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Commit 718749d5 authored by Linus Torvalds's avatar Linus Torvalds
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 

Pull input updates from Dmitry Torokhov:
 "The first round of updates for the input subsystem.

  A few new drivers (power button handler for AXP20x PMIC, tps65218
  power button driver, sun4i keys driver, regulator haptic driver, NI
  Ettus Research USRP E3x0 button, Alwinner A10/A20 PS/2 controller).

  Updates to Synaptics and ALPS touchpad drivers (with more to come
  later), brand new Focaltech PS/2 support, update to Cypress driver to
  handle Gen5 (in addition to Gen3) devices, and number of other fixups
  to various drivers as well as input core"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (54 commits)
  Input: elan_i2c - fix wrong %p extension
  Input: evdev - do not queue SYN_DROPPED if queue is empty
  Input: gscps2 - fix MODULE_DEVICE_TABLE invocation
  Input: synaptics - use dmax in input_mt_assign_slots
  Input: pxa27x_keypad - remove unnecessary ARM includes
  Input: ti_am335x_tsc - replace delta filtering with median filtering
  ARM: dts: AM335x: Make charge delay a DT parameter for TSC
  Input: ti_am335x_tsc - read charge delay from DT
  Input: ti_am335x_tsc - remove udelay in interrupt handler
  Input: ti_am335x_tsc - interchange touchscreen and ADC steps
  Input: MT - add support for balanced slot assignment
  Input: drv2667 - remove wrong and unneeded drv2667-haptics modalias
  Input: drv260x - remove wrong and unneeded drv260x-haptics modalias
  Input: cap11xx - remove wrong and unneeded cap11xx modalias
  Input: sun4i-ts - add support for touchpanel controller on A31
  Input: serio - add support for Alwinner A10/A20 PS/2 controller
  Input: gtco - use sign_extend32() for sign extension
  Input: elan_i2c - verify firmware signature applying it
  Input: elantech - remove stale comment from Kconfig
  Input: cyapa - off by one in cyapa_update_fw_store()
  ...
parents e0c84537 4ba24fef
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Showing with 7963 additions and 1308 deletions
Documentation/ABI/testing/sysfs-driver-input-axp-pek 0 → 100644
View file @ 718749d5
What: /sys/class/input/input(x)/device/startup
Date: March 2014
Contact: Carlo Caione <carlo@caione.org>
Description: Startup time in us. Board is powered on if the button is pressed
for more than <startup_time>
What: /sys/class/input/input(x)/device/shutdown
Date: March 2014
Contact: Carlo Caione <carlo@caione.org>
Description: Shutdown time in us. Board is powered off if the button is pressed
for more than <shutdown_time>
Documentation/devicetree/bindings/input/e3x0-button.txt 0 → 100644
View file @ 718749d5
National Instruments Ettus Research USRP E3x0 button driver
This module is part of the NI Ettus Research USRP E3x0 SDR.
This module provides a simple power button event via two interrupts.
Required properties:
- compatible: should be one of the following
- "ettus,e3x0-button": For devices such as the NI Ettus Research USRP E3x0
- interrupt-parent:
- a phandle to the interrupt controller that it is attached to.
- interrupts: should be one of the following
- <0 30 1>, <0 31 1>: For devices such as the NI Ettus Research USRP E3x0
- interrupt-names: should be one of the following
- "press", "release": For devices such as the NI Ettus Research USRP E3x0
Note: Interrupt numbers might vary depending on the FPGA configuration.
Example:
button {
compatible = "ettus,e3x0-button";
interrupt-parent = <&intc>;
interrupts = <0 30 1>, <0 31 1>;
interrupt-names = "press", "release";
}
Documentation/devicetree/bindings/input/regulator-haptic.txt 0 → 100644
View file @ 718749d5
* Regulator Haptic Device Tree Bindings
Required Properties:
- compatible : Should be "regulator-haptic"
- haptic-supply : Power supply to the haptic motor.
[*] refer Documentation/devicetree/bindings/regulator/regulator.txt
- max-microvolt : The maximum voltage value supplied to the haptic motor.
[The unit of the voltage is a micro]
- min-microvolt : The minimum voltage value supplied to the haptic motor.
[The unit of the voltage is a micro]
Example:
haptics {
compatible = "regulator-haptic";
haptic-supply = <&motor_regulator>;
max-microvolt = <2700000>;
min-microvolt = <1100000>;
};
Documentation/devicetree/bindings/input/sun4i-lradc-keys.txt 0 → 100644
View file @ 718749d5
Allwinner sun4i low res adc attached tablet keys
------------------------------------------------
Required properties:
- compatible: "allwinner,sun4i-a10-lradc-keys"
- reg: mmio address range of the chip
- interrupts: interrupt to which the chip is connected
- vref-supply: powersupply for the lradc reference voltage
Each key is represented as a sub-node of "allwinner,sun4i-a10-lradc-keys":
Required subnode-properties:
- label: Descriptive name of the key.
- linux,code: Keycode to emit.
- channel: Channel this key is attached to, mut be 0 or 1.
- voltage: Voltage in µV at lradc input when this key is pressed.
Example:
#include <dt-bindings/input/input.h>
lradc: lradc@01c22800 {
compatible = "allwinner,sun4i-a10-lradc-keys";
reg = <0x01c22800 0x100>;
interrupts = <31>;
vref-supply = <&reg_vcc3v0>;
button@191 {
label = "Volume Up";
linux,code = <KEY_VOLUMEUP>;
channel = <0>;
voltage = <191274>;
};
button@392 {
label = "Volume Down";
linux,code = <KEY_VOLUMEDOWN>;
channel = <0>;
voltage = <392644>;
};
button@601 {
label = "Menu";
linux,code = <KEY_MENU>;
channel = <0>;
voltage = <601151>;
};
button@795 {
label = "Enter";
linux,code = <KEY_ENTER>;
channel = <0>;
voltage = <795090>;
};
button@987 {
label = "Home";
linux,code = <KEY_HOMEPAGE>;
channel = <0>;
voltage = <987387>;
};
};
Documentation/devicetree/bindings/input/touchscreen/sun4i.txt
View file @ 718749d5
......@@ -2,9 +2,10 @@ sun4i resistive touchscreen controller
--------------------------------------
Required properties:
- compatible: "allwinner,sun4i-a10-ts"
- compatible: "allwinner,sun4i-a10-ts" or "allwinner,sun6i-a31-ts"
- reg: mmio address range of the chip
- interrupts: interrupt to which the chip is connected
- #thermal-sensor-cells: shall be 0
Optional properties:
- allwinner,ts-attached: boolean indicating that an actual touchscreen is
......@@ -17,4 +18,5 @@ Example:
reg = <0x01c25000 0x100>;
interrupts = <29>;
allwinner,ts-attached;
#thermal-sensor-cells = <0>;
};
Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt
View file @ 718749d5
......@@ -28,6 +28,20 @@ Required properties:
ti,adc-channels: List of analog inputs available for ADC.
AIN0 = 0, AIN1 = 1 and so on till AIN7 = 7.
Optional properties:
- child "tsc"
ti,charge-delay: Length of touch screen charge delay step in terms of
ADC clock cycles. Charge delay value should be large
in order to avoid false pen-up events. This value
effects the overall sampling speed, hence need to be
kept as low as possible, while avoiding false pen-up
event. Start from a lower value, say 0x400, and
increase value until false pen-up events are avoided.
The pen-up detection happens immediately after the
charge step, so this does in fact function as a
hardware knob for adjusting the amount of "settling
time".
Example:
tscadc: tscadc@44e0d000 {
compatible = "ti,am3359-tscadc";
......@@ -36,6 +50,7 @@ Example:
ti,x-plate-resistance = <200>;
ti,coordiante-readouts = <5>;
ti,wire-config = <0x00 0x11 0x22 0x33>;
ti,charge-delay = <0x400>;
};
adc {
......
Documentation/devicetree/bindings/input/tps65218-pwrbutton.txt 0 → 100644
View file @ 718749d5
Texas Instruments TPS65218 power button
This driver provides a simple power button event via an Interrupt.
Required properties:
- compatible: should be "ti,tps65218-pwrbutton"
- interrupts: should be one of the following
- <3 IRQ_TYPE_EDGE_BOTH>: For controllers compatible with tps65218
Example:
&tps {
power-button {
compatible = "ti,tps65218-pwrbutton";
interrupts = <3 IRQ_TYPE_EDGE_BOTH>;
};
};
Documentation/devicetree/bindings/serio/allwinner,sun4i-ps2.txt 0 → 100644
View file @ 718749d5
* Device tree bindings for Allwinner A10, A20 PS2 host controller
A20 PS2 is dual role controller (PS2 host and PS2 device). These bindings are
for PS2 A10/A20 host controller. IBM compliant IBM PS2 and AT-compatible keyboard
and mouse can be connected.
Required properties:
- reg : Offset and length of the register set for the device.
- compatible : Should be as of the following:
- "allwinner,sun4i-a10-ps2"
- interrupts : The interrupt line connected to the PS2.
- clocks : The gate clk connected to the PS2.
Example:
ps20: ps2@0x01c2a000 {
compatible = "allwinner,sun4i-a10-ps2";
reg = <0x01c2a000 0x400>;
interrupts = <0 62 4>;
clocks = <&apb1_gates 6>;
status = "disabled";
};
Documentation/devicetree/bindings/vendor-prefixes.txt
View file @ 718749d5
......@@ -54,6 +54,7 @@ epcos EPCOS AG
epfl Ecole Polytechnique Fédérale de Lausanne
epson Seiko Epson Corp.
est ESTeem Wireless Modems
ettus NI Ettus Research
eukrea Eukréa Electromatique
everest Everest Semiconductor Co. Ltd.
excito Excito
......
MAINTAINERS
View file @ 718749d5
......@@ -3479,6 +3479,14 @@ M: "Maciej W. Rozycki" <macro@linux-mips.org>
S: Maintained
F: drivers/tty/serial/dz.*
E3X0 POWER BUTTON DRIVER
M: Moritz Fischer <moritz.fischer@ettus.com>
L: usrp-users@lists.ettus.com
W: http://www.ettus.com
S: Supported
F: drivers/input/misc/e3x0-button.c
F: Documentation/devicetree/bindings/input/e3x0-button.txt
E4000 MEDIA DRIVER
M: Antti Palosaari <crope@iki.fi>
L: linux-media@vger.kernel.org
......@@ -9281,6 +9289,13 @@ F: arch/m68k/sun3*/
F: arch/m68k/include/asm/sun3*
F: drivers/net/ethernet/i825xx/sun3*
SUN4I LOW RES ADC ATTACHED TABLET KEYS DRIVER
M: Hans de Goede <hdegoede@redhat.com>
L: linux-input@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/input/sun4i-lradc-keys.txt
F: drivers/input/keyboard/sun4i-lradc-keys.c
SUNDANCE NETWORK DRIVER
M: Denis Kirjanov <kda@linux-powerpc.org>
L: netdev@vger.kernel.org
......
arch/arm/boot/dts/am335x-evm.dts
View file @ 718749d5
......@@ -648,6 +648,7 @@ tsc {
ti,x-plate-resistance = <200>;
ti,coordinate-readouts = <5>;
ti,wire-config = <0x00 0x11 0x22 0x33>;
ti,charge-delay = <0x400>;
};
adc {
......
drivers/iio/adc/ti_am335x_adc.c
View file @ 718749d5
......@@ -86,19 +86,18 @@ static void tiadc_step_config(struct iio_dev *indio_dev)
{
struct tiadc_device *adc_dev = iio_priv(indio_dev);
unsigned int stepconfig;
int i, steps;
int i, steps = 0;
/*
* There are 16 configurable steps and 8 analog input
* lines available which are shared between Touchscreen and ADC.
*
* Steps backwards i.e. from 16 towards 0 are used by ADC
* Steps forwards i.e. from 0 towards 16 are used by ADC
* depending on number of input lines needed.
* Channel would represent which analog input
* needs to be given to ADC to digitalize data.
*/
steps = TOTAL_STEPS - adc_dev->channels;
if (iio_buffer_enabled(indio_dev))
stepconfig = STEPCONFIG_AVG_16 | STEPCONFIG_FIFO1
| STEPCONFIG_MODE_SWCNT;
......
drivers/input/evdev.c
View file @ 718749d5
......@@ -62,26 +62,6 @@ struct evdev_client {
struct input_event buffer[];
};
static int evdev_set_clk_type(struct evdev_client *client, unsigned int clkid)
{
switch (clkid) {
case CLOCK_REALTIME:
client->clk_type = EV_CLK_REAL;
break;
case CLOCK_MONOTONIC:
client->clk_type = EV_CLK_MONO;
break;
case CLOCK_BOOTTIME:
client->clk_type = EV_CLK_BOOT;
break;
default:
return -EINVAL;
}
return 0;
}
/* flush queued events of type @type, caller must hold client->buffer_lock */
static void __evdev_flush_queue(struct evdev_client *client, unsigned int type)
{
......@@ -128,10 +108,8 @@ static void __evdev_flush_queue(struct evdev_client *client, unsigned int type)
client->head = head;
}
/* queue SYN_DROPPED event */
static void evdev_queue_syn_dropped(struct evdev_client *client)
static void __evdev_queue_syn_dropped(struct evdev_client *client)
{
unsigned long flags;
struct input_event ev;
ktime_t time;
......@@ -146,8 +124,6 @@ static void evdev_queue_syn_dropped(struct evdev_client *client)
ev.code = SYN_DROPPED;
ev.value = 0;
spin_lock_irqsave(&client->buffer_lock, flags);
client->buffer[client->head++] = ev;
client->head &= client->bufsize - 1;
......@@ -156,8 +132,53 @@ static void evdev_queue_syn_dropped(struct evdev_client *client)
client->tail = (client->head - 1) & (client->bufsize - 1);
client->packet_head = client->tail;
}
}
static void evdev_queue_syn_dropped(struct evdev_client *client)
{
unsigned long flags;
spin_lock_irqsave(&client->buffer_lock, flags);
__evdev_queue_syn_dropped(client);
spin_unlock_irqrestore(&client->buffer_lock, flags);
}
static int evdev_set_clk_type(struct evdev_client *client, unsigned int clkid)
{
unsigned long flags;
if (client->clk_type == clkid)
return 0;
switch (clkid) {
case CLOCK_REALTIME:
client->clk_type = EV_CLK_REAL;
break;
case CLOCK_MONOTONIC:
client->clk_type = EV_CLK_MONO;
break;
case CLOCK_BOOTTIME:
client->clk_type = EV_CLK_BOOT;
break;
default:
return -EINVAL;
}
/*
* Flush pending events and queue SYN_DROPPED event,
* but only if the queue is not empty.
*/
spin_lock_irqsave(&client->buffer_lock, flags);
if (client->head != client->tail) {
client->packet_head = client->head = client->tail;
__evdev_queue_syn_dropped(client);
}
spin_unlock_irqrestore(&client->buffer_lock, flags);
return 0;
}
static void __pass_event(struct evdev_client *client,
......
drivers/input/input-mt.c
View file @ 718749d5
......@@ -293,7 +293,7 @@ void input_mt_sync_frame(struct input_dev *dev)
}
EXPORT_SYMBOL(input_mt_sync_frame);
static int adjust_dual(int *begin, int step, int *end, int eq)
static int adjust_dual(int *begin, int step, int *end, int eq, int mu)
{
int f, *p, s, c;
......@@ -311,9 +311,10 @@ static int adjust_dual(int *begin, int step, int *end, int eq)
s = *p;
c = (f + s + 1) / 2;
if (c == 0 || (c > 0 && !eq))
if (c == 0 || (c > mu && (!eq || mu > 0)))
return 0;
if (s < 0)
/* Improve convergence for positive matrices by penalizing overcovers */
if (s < 0 && mu <= 0)
c *= 2;
for (p = begin; p != end; p += step)
......@@ -322,23 +323,24 @@ static int adjust_dual(int *begin, int step, int *end, int eq)
return (c < s && s <= 0) || (f >= 0 && f < c);
}
static void find_reduced_matrix(int *w, int nr, int nc, int nrc)
static void find_reduced_matrix(int *w, int nr, int nc, int nrc, int mu)
{
int i, k, sum;
for (k = 0; k < nrc; k++) {
for (i = 0; i < nr; i++)
adjust_dual(w + i, nr, w + i + nrc, nr <= nc);
adjust_dual(w + i, nr, w + i + nrc, nr <= nc, mu);
sum = 0;
for (i = 0; i < nrc; i += nr)
sum += adjust_dual(w + i, 1, w + i + nr, nc <= nr);
sum += adjust_dual(w + i, 1, w + i + nr, nc <= nr, mu);
if (!sum)
break;
}
}
static int input_mt_set_matrix(struct input_mt *mt,
const struct input_mt_pos *pos, int num_pos)
const struct input_mt_pos *pos, int num_pos,
int mu)
{
const struct input_mt_pos *p;
struct input_mt_slot *s;
......@@ -352,7 +354,7 @@ static int input_mt_set_matrix(struct input_mt *mt,
y = input_mt_get_value(s, ABS_MT_POSITION_Y);
for (p = pos; p != pos + num_pos; p++) {
int dx = x - p->x, dy = y - p->y;
*w++ = dx * dx + dy * dy;
*w++ = dx * dx + dy * dy - mu;
}
}
......@@ -393,17 +395,24 @@ static void input_mt_set_slots(struct input_mt *mt,
* @slots: the slot assignment to be filled
* @pos: the position array to match
* @num_pos: number of positions
* @dmax: maximum ABS_MT_POSITION displacement (zero for infinite)
*
* Performs a best match against the current contacts and returns
* the slot assignment list. New contacts are assigned to unused
* slots.
*
* The assignments are balanced so that all coordinate displacements are
* below the euclidian distance dmax. If no such assignment can be found,
* some contacts are assigned to unused slots.
*
* Returns zero on success, or negative error in case of failure.
*/
int input_mt_assign_slots(struct input_dev *dev, int *slots,
const struct input_mt_pos *pos, int num_pos)
const struct input_mt_pos *pos, int num_pos,
int dmax)
{
struct input_mt *mt = dev->mt;
int mu = 2 * dmax * dmax;
int nrc;
if (!mt || !mt->red)
......@@ -413,8 +422,8 @@ int input_mt_assign_slots(struct input_dev *dev, int *slots,
if (num_pos < 1)
return 0;
nrc = input_mt_set_matrix(mt, pos, num_pos);
find_reduced_matrix(mt->red, num_pos, nrc / num_pos, nrc);
nrc = input_mt_set_matrix(mt, pos, num_pos, mu);
find_reduced_matrix(mt->red, num_pos, nrc / num_pos, nrc, mu);
input_mt_set_slots(mt, slots, num_pos);
return 0;
......
drivers/input/input.c
View file @ 718749d5
......@@ -100,23 +100,24 @@ static unsigned int input_to_handler(struct input_handle *handle,
struct input_value *end = vals;
struct input_value *v;
for (v = vals; v != vals + count; v++) {
if (handler->filter &&
handler->filter(handle, v->type, v->code, v->value))
continue;
if (end != v)
*end = *v;
end++;
if (handler->filter) {
for (v = vals; v != vals + count; v++) {
if (handler->filter(handle, v->type, v->code, v->value))
continue;
if (end != v)
*end = *v;
end++;
}
count = end - vals;
}
count = end - vals;
if (!count)
return 0;
if (handler->events)
handler->events(handle, vals, count);
else if (handler->event)
for (v = vals; v != end; v++)
for (v = vals; v != vals + count; v++)
handler->event(handle, v->type, v->code, v->value);
return count;
......@@ -143,8 +144,11 @@ static void input_pass_values(struct input_dev *dev,
count = input_to_handler(handle, vals, count);
} else {
list_for_each_entry_rcu(handle, &dev->h_list, d_node)
if (handle->open)
if (handle->open) {
count = input_to_handler(handle, vals, count);
if (!count)
break;
}
}
rcu_read_unlock();
......@@ -152,12 +156,14 @@ static void input_pass_values(struct input_dev *dev,
add_input_randomness(vals->type, vals->code, vals->value);
/* trigger auto repeat for key events */
for (v = vals; v != vals + count; v++) {
if (v->type == EV_KEY && v->value != 2) {
if (v->value)
input_start_autorepeat(dev, v->code);
else
input_stop_autorepeat(dev);
if (test_bit(EV_REP, dev->evbit) && test_bit(EV_KEY, dev->evbit)) {
for (v = vals; v != vals + count; v++) {
if (v->type == EV_KEY && v->value != 2) {
if (v->value)
input_start_autorepeat(dev, v->code);
else
input_stop_autorepeat(dev);
}
}
}
}
......
drivers/input/keyboard/Kconfig
View file @ 718749d5
......@@ -568,6 +568,16 @@ config KEYBOARD_STMPE
To compile this driver as a module, choose M here: the module will be
called stmpe-keypad.
config KEYBOARD_SUN4I_LRADC
tristate "Allwinner sun4i low res adc attached tablet keys support"
depends on ARCH_SUNXI
help
This selects support for the Allwinner low res adc attached tablet
keys found on Allwinner sunxi SoCs.
To compile this driver as a module, choose M here: the
module will be called sun4i-lradc-keys.
config KEYBOARD_DAVINCI
tristate "TI DaVinci Key Scan"
depends on ARCH_DAVINCI_DM365
......
drivers/input/keyboard/Makefile
View file @ 718749d5
......@@ -53,6 +53,7 @@ obj-$(CONFIG_KEYBOARD_SPEAR) += spear-keyboard.o
obj-$(CONFIG_KEYBOARD_STMPE) += stmpe-keypad.o
obj-$(CONFIG_KEYBOARD_STOWAWAY) += stowaway.o
obj-$(CONFIG_KEYBOARD_ST_KEYSCAN) += st-keyscan.o
obj-$(CONFIG_KEYBOARD_SUN4I_LRADC) += sun4i-lradc-keys.o
obj-$(CONFIG_KEYBOARD_SUNKBD) += sunkbd.o
obj-$(CONFIG_KEYBOARD_TC3589X) += tc3589x-keypad.o
obj-$(CONFIG_KEYBOARD_TEGRA) += tegra-kbc.o
......
drivers/input/keyboard/atakbd.c
View file @ 718749d5
......@@ -170,7 +170,7 @@ static unsigned char atakbd_keycode[0x72] = { /* American layout */
[93] = KEY_KPASTERISK,
[94] = KEY_KPPLUS,
[95] = KEY_HELP,
[96] = KEY_BACKSLASH, /* FIXME: '<' */
[96] = KEY_102ND,
[97] = KEY_KPASTERISK, /* FIXME */
[98] = KEY_KPSLASH,
[99] = KEY_KPLEFTPAREN,
......
drivers/input/keyboard/cap11xx.c
View file @ 718749d5
......@@ -370,7 +370,6 @@ static struct i2c_driver cap11xx_i2c_driver = {
module_i2c_driver(cap11xx_i2c_driver);
MODULE_ALIAS("platform:cap11xx");
MODULE_DESCRIPTION("Microchip CAP11XX driver");
MODULE_AUTHOR("Daniel Mack <linux@zonque.org>");
MODULE_LICENSE("GPL v2");
drivers/input/keyboard/imx_keypad.c
View file @ 718749d5
......@@ -448,8 +448,7 @@ static int imx_keypad_probe(struct platform_device *pdev)
return -ENOMEM;
}
keypad = devm_kzalloc(&pdev->dev, sizeof(struct imx_keypad),
GFP_KERNEL);
keypad = devm_kzalloc(&pdev->dev, sizeof(*keypad), GFP_KERNEL);
if (!keypad) {
dev_err(&pdev->dev, "not enough memory for driver data\n");
return -ENOMEM;
......
drivers/input/keyboard/pxa27x_keypad.c
View file @ 718749d5
......@@ -20,6 +20,7 @@
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/io.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
......@@ -28,10 +29,6 @@
#include <linux/slab.h>
#include <linux/of.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/hardware.h>
#include <linux/platform_data/keypad-pxa27x.h>
/*
* Keypad Controller registers
......
drivers/input/keyboard/sun4i-lradc-keys.c 0 → 100644
View file @ 718749d5
/*
* Allwinner sun4i low res adc attached tablet keys driver
*
* Copyright (C) 2014 Hans de Goede <hdegoede@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/*
* Allwinnner sunxi SoCs have a lradc which is specifically designed to have
* various (tablet) keys (ie home, back, search, etc). attached to it using
* a resistor network. This driver is for the keys on such boards.
*
* There are 2 channels, currently this driver only supports channel 0 since
* there are no boards known to use channel 1.
*/
#include <linux/err.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#define LRADC_CTRL 0x00
#define LRADC_INTC 0x04
#define LRADC_INTS 0x08
#define LRADC_DATA0 0x0c
#define LRADC_DATA1 0x10
/* LRADC_CTRL bits */
#define FIRST_CONVERT_DLY(x) ((x) << 24) /* 8 bits */
#define CHAN_SELECT(x) ((x) << 22) /* 2 bits */
#define CONTINUE_TIME_SEL(x) ((x) << 16) /* 4 bits */
#define KEY_MODE_SEL(x) ((x) << 12) /* 2 bits */
#define LEVELA_B_CNT(x) ((x) << 8) /* 4 bits */
#define HOLD_EN(x) ((x) << 6)
#define LEVELB_VOL(x) ((x) << 4) /* 2 bits */
#define SAMPLE_RATE(x) ((x) << 2) /* 2 bits */
#define ENABLE(x) ((x) << 0)
/* LRADC_INTC and LRADC_INTS bits */
#define CHAN1_KEYUP_IRQ BIT(12)
#define CHAN1_ALRDY_HOLD_IRQ BIT(11)
#define CHAN1_HOLD_IRQ BIT(10)
#define CHAN1_KEYDOWN_IRQ BIT(9)
#define CHAN1_DATA_IRQ BIT(8)
#define CHAN0_KEYUP_IRQ BIT(4)
#define CHAN0_ALRDY_HOLD_IRQ BIT(3)
#define CHAN0_HOLD_IRQ BIT(2)
#define CHAN0_KEYDOWN_IRQ BIT(1)
#define CHAN0_DATA_IRQ BIT(0)
struct sun4i_lradc_keymap {
u32 voltage;
u32 keycode;
};
struct sun4i_lradc_data {
struct device *dev;
struct input_dev *input;
void __iomem *base;
struct regulator *vref_supply;
struct sun4i_lradc_keymap *chan0_map;
u32 chan0_map_count;
u32 chan0_keycode;
u32 vref;
};
static irqreturn_t sun4i_lradc_irq(int irq, void *dev_id)
{
struct sun4i_lradc_data *lradc = dev_id;
u32 i, ints, val, voltage, diff, keycode = 0, closest = 0xffffffff;
ints = readl(lradc->base + LRADC_INTS);
/*
* lradc supports only one keypress at a time, release does not give
* any info as to which key was released, so we cache the keycode.
*/
if (ints & CHAN0_KEYUP_IRQ) {
input_report_key(lradc->input, lradc->chan0_keycode, 0);
lradc->chan0_keycode = 0;
}
if ((ints & CHAN0_KEYDOWN_IRQ) && lradc->chan0_keycode == 0) {
val = readl(lradc->base + LRADC_DATA0) & 0x3f;
voltage = val * lradc->vref / 63;
for (i = 0; i < lradc->chan0_map_count; i++) {
diff = abs(lradc->chan0_map[i].voltage - voltage);
if (diff < closest) {
closest = diff;
keycode = lradc->chan0_map[i].keycode;
}
}
lradc->chan0_keycode = keycode;
input_report_key(lradc->input, lradc->chan0_keycode, 1);
}
input_sync(lradc->input);
writel(ints, lradc->base + LRADC_INTS);
return IRQ_HANDLED;
}
static int sun4i_lradc_open(struct input_dev *dev)
{
struct sun4i_lradc_data *lradc = input_get_drvdata(dev);
int error;
error = regulator_enable(lradc->vref_supply);
if (error)
return error;
/* lradc Vref internally is divided by 2/3 */
lradc->vref = regulator_get_voltage(lradc->vref_supply) * 2 / 3;
/*
* Set sample time to 4 ms / 250 Hz. Wait 2 * 4 ms for key to
* stabilize on press, wait (1 + 1) * 4 ms for key release
*/
writel(FIRST_CONVERT_DLY(2) | LEVELA_B_CNT(1) | HOLD_EN(1) |
SAMPLE_RATE(0) | ENABLE(1), lradc->base + LRADC_CTRL);
writel(CHAN0_KEYUP_IRQ | CHAN0_KEYDOWN_IRQ, lradc->base + LRADC_INTC);
return 0;
}
static void sun4i_lradc_close(struct input_dev *dev)
{
struct sun4i_lradc_data *lradc = input_get_drvdata(dev);
/* Disable lradc, leave other settings unchanged */
writel(FIRST_CONVERT_DLY(2) | LEVELA_B_CNT(1) | HOLD_EN(1) |
SAMPLE_RATE(2), lradc->base + LRADC_CTRL);
writel(0, lradc->base + LRADC_INTC);
regulator_disable(lradc->vref_supply);
}
static int sun4i_lradc_load_dt_keymap(struct device *dev,
struct sun4i_lradc_data *lradc)
{
struct device_node *np, *pp;
int i;
int error;
np = dev->of_node;
if (!np)
return -EINVAL;
lradc->chan0_map_count = of_get_child_count(np);
if (lradc->chan0_map_count == 0) {
dev_err(dev, "keymap is missing in device tree\n");
return -EINVAL;
}
lradc->chan0_map = devm_kmalloc_array(dev, lradc->chan0_map_count,
sizeof(struct sun4i_lradc_keymap),
GFP_KERNEL);
if (!lradc->chan0_map)
return -ENOMEM;
i = 0;
for_each_child_of_node(np, pp) {
struct sun4i_lradc_keymap *map = &lradc->chan0_map[i];
u32 channel;
error = of_property_read_u32(pp, "channel", &channel);
if (error || channel != 0) {
dev_err(dev, "%s: Inval channel prop\n", pp->name);
return -EINVAL;
}
error = of_property_read_u32(pp, "voltage", &map->voltage);
if (error) {
dev_err(dev, "%s: Inval voltage prop\n", pp->name);
return -EINVAL;
}
error = of_property_read_u32(pp, "linux,code", &map->keycode);
if (error) {
dev_err(dev, "%s: Inval linux,code prop\n", pp->name);
return -EINVAL;
}
i++;
}
return 0;
}
static int sun4i_lradc_probe(struct platform_device *pdev)
{
struct sun4i_lradc_data *lradc;
struct device *dev = &pdev->dev;
int i;
int error;
lradc = devm_kzalloc(dev, sizeof(struct sun4i_lradc_data), GFP_KERNEL);
if (!lradc)
return -ENOMEM;
error = sun4i_lradc_load_dt_keymap(dev, lradc);
if (error)
return error;
lradc->vref_supply = devm_regulator_get(dev, "vref");
if (IS_ERR(lradc->vref_supply))
return PTR_ERR(lradc->vref_supply);
lradc->dev = dev;
lradc->input = devm_input_allocate_device(dev);
if (!lradc->input)
return -ENOMEM;
lradc->input->name = pdev->name;
lradc->input->phys = "sun4i_lradc/input0";
lradc->input->open = sun4i_lradc_open;
lradc->input->close = sun4i_lradc_close;
lradc->input->id.bustype = BUS_HOST;
lradc->input->id.vendor = 0x0001;
lradc->input->id.product = 0x0001;
lradc->input->id.version = 0x0100;
__set_bit(EV_KEY, lradc->input->evbit);
for (i = 0; i < lradc->chan0_map_count; i++)
__set_bit(lradc->chan0_map[i].keycode, lradc->input->keybit);
input_set_drvdata(lradc->input, lradc);
lradc->base = devm_ioremap_resource(dev,
platform_get_resource(pdev, IORESOURCE_MEM, 0));
if (IS_ERR(lradc->base))
return PTR_ERR(lradc->base);
error = devm_request_irq(dev, platform_get_irq(pdev, 0),
sun4i_lradc_irq, 0,
"sun4i-a10-lradc-keys", lradc);
if (error)
return error;
error = input_register_device(lradc->input);
if (error)
return error;
platform_set_drvdata(pdev, lradc);
return 0;
}
static const struct of_device_id sun4i_lradc_of_match[] = {
{ .compatible = "allwinner,sun4i-a10-lradc-keys", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, sun4i_lradc_of_match);
static struct platform_driver sun4i_lradc_driver = {
.driver = {
.name = "sun4i-a10-lradc-keys",
.of_match_table = of_match_ptr(sun4i_lradc_of_match),
},
.probe = sun4i_lradc_probe,
};
module_platform_driver(sun4i_lradc_driver);
MODULE_DESCRIPTION("Allwinner sun4i low res adc attached tablet keys driver");
MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
MODULE_LICENSE("GPL");
drivers/input/misc/Kconfig
View file @ 718749d5
......@@ -93,6 +93,16 @@ config INPUT_BMA150
To compile this driver as a module, choose M here: the
module will be called bma150.
config INPUT_E3X0_BUTTON
tristate "NI Ettus Research USRP E3x0 Button support."
default n
help
Say Y here to enable support for the NI Ettus Research
USRP E3x0 Button.
To compile this driver as a module, choose M here: the
module will be called e3x0_button.
config INPUT_PCSPKR
tristate "PC Speaker support"
depends on PCSPKR_PLATFORM
......@@ -394,6 +404,18 @@ config INPUT_CM109
To compile this driver as a module, choose M here: the module will be
called cm109.
config INPUT_REGULATOR_HAPTIC
tristate "Regulator haptics support"
depends on REGULATOR
select INPUT_FF_MEMLESS
help
This option enables device driver support for the haptic controlled
by a regulator. This driver supports ff-memless interface
from input framework.
To compile this driver as a module, choose M here: the
module will be called regulator-haptic.
config INPUT_RETU_PWRBUTTON
tristate "Retu Power button Driver"
depends on MFD_RETU
......@@ -404,6 +426,27 @@ config INPUT_RETU_PWRBUTTON
To compile this driver as a module, choose M here. The module will
be called retu-pwrbutton.
config INPUT_TPS65218_PWRBUTTON
tristate "TPS65218 Power button driver"
depends on MFD_TPS65218
help
Say Y here if you want to enable power buttong reporting for
the TPS65218 Power Management IC device.
To compile this driver as a module, choose M here. The module will
be called tps65218-pwrbutton.
config INPUT_AXP20X_PEK
tristate "X-Powers AXP20X power button driver"
depends on MFD_AXP20X
help
Say Y here if you want to enable power key reporting via the
AXP20X PMIC.
To compile this driver as a module, choose M here. The module will
be called axp20x-pek.
config INPUT_TWL4030_PWRBUTTON
tristate "TWL4030 Power button Driver"
depends on TWL4030_CORE
......
drivers/input/misc/Makefile
View file @ 718749d5
......@@ -26,6 +26,7 @@ obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o
obj-$(CONFIG_INPUT_DA9052_ONKEY) += da9052_onkey.o
obj-$(CONFIG_INPUT_DA9055_ONKEY) += da9055_onkey.o
obj-$(CONFIG_INPUT_DM355EVM) += dm355evm_keys.o
obj-$(CONFIG_INPUT_E3X0_BUTTON) += e3x0-button.o
obj-$(CONFIG_INPUT_DRV260X_HAPTICS) += drv260x.o
obj-$(CONFIG_INPUT_DRV2667_HAPTICS) += drv2667.o
obj-$(CONFIG_INPUT_GP2A) += gp2ap002a00f.o
......@@ -53,12 +54,15 @@ obj-$(CONFIG_INPUT_PMIC8XXX_PWRKEY) += pmic8xxx-pwrkey.o
obj-$(CONFIG_INPUT_POWERMATE) += powermate.o
obj-$(CONFIG_INPUT_PWM_BEEPER) += pwm-beeper.o
obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o
obj-$(CONFIG_INPUT_REGULATOR_HAPTIC) += regulator-haptic.o
obj-$(CONFIG_INPUT_RETU_PWRBUTTON) += retu-pwrbutton.o
obj-$(CONFIG_INPUT_AXP20X_PEK) += axp20x-pek.o
obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER) += rotary_encoder.o
obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o
obj-$(CONFIG_INPUT_SIRFSOC_ONKEY) += sirfsoc-onkey.o
obj-$(CONFIG_INPUT_SOC_BUTTON_ARRAY) += soc_button_array.o
obj-$(CONFIG_INPUT_SPARCSPKR) += sparcspkr.o
obj-$(CONFIG_INPUT_TPS65218_PWRBUTTON) += tps65218-pwrbutton.o
obj-$(CONFIG_INPUT_TWL4030_PWRBUTTON) += twl4030-pwrbutton.o
obj-$(CONFIG_INPUT_TWL4030_VIBRA) += twl4030-vibra.o
obj-$(CONFIG_INPUT_TWL6040_VIBRA) += twl6040-vibra.o
......
drivers/input/misc/axp20x-pek.c 0 → 100644
View file @ 718749d5
/*
* axp20x power button driver.
*
* Copyright (C) 2013 Carlo Caione <carlo@caione.org>
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file "COPYING" in the main directory of this
* archive for more details.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/errno.h>
#include <linux/irq.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mfd/axp20x.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#define AXP20X_PEK_STARTUP_MASK (0xc0)
#define AXP20X_PEK_SHUTDOWN_MASK (0x03)
struct axp20x_pek {
struct axp20x_dev *axp20x;
struct input_dev *input;
int irq_dbr;
int irq_dbf;
};
struct axp20x_time {
unsigned int time;
unsigned int idx;
};
static const struct axp20x_time startup_time[] = {
{ .time = 128, .idx = 0 },
{ .time = 1000, .idx = 2 },
{ .time = 3000, .idx = 1 },
{ .time = 2000, .idx = 3 },
};
static const struct axp20x_time shutdown_time[] = {
{ .time = 4000, .idx = 0 },
{ .time = 6000, .idx = 1 },
{ .time = 8000, .idx = 2 },
{ .time = 10000, .idx = 3 },
};
struct axp20x_pek_ext_attr {
const struct axp20x_time *p_time;
unsigned int mask;
};
static struct axp20x_pek_ext_attr axp20x_pek_startup_ext_attr = {
.p_time = startup_time,
.mask = AXP20X_PEK_STARTUP_MASK,
};
static struct axp20x_pek_ext_attr axp20x_pek_shutdown_ext_attr = {
.p_time = shutdown_time,
.mask = AXP20X_PEK_SHUTDOWN_MASK,
};
static struct axp20x_pek_ext_attr *get_axp_ext_attr(struct device_attribute *attr)
{
return container_of(attr, struct dev_ext_attribute, attr)->var;
}
static ssize_t axp20x_show_ext_attr(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
struct axp20x_pek_ext_attr *axp20x_ea = get_axp_ext_attr(attr);
unsigned int val;
int ret, i;
ret = regmap_read(axp20x_pek->axp20x->regmap, AXP20X_PEK_KEY, &val);
if (ret != 0)
return ret;
val &= axp20x_ea->mask;
val >>= ffs(axp20x_ea->mask) - 1;
for (i = 0; i < 4; i++)
if (val == axp20x_ea->p_time[i].idx)
val = axp20x_ea->p_time[i].time;
return sprintf(buf, "%u\n", val);
}
static ssize_t axp20x_store_ext_attr(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
struct axp20x_pek_ext_attr *axp20x_ea = get_axp_ext_attr(attr);
char val_str[20];
size_t len;
int ret, i;
unsigned int val, idx = 0;
unsigned int best_err = UINT_MAX;
val_str[sizeof(val_str) - 1] = '\0';
strncpy(val_str, buf, sizeof(val_str) - 1);
len = strlen(val_str);
if (len && val_str[len - 1] == '\n')
val_str[len - 1] = '\0';
ret = kstrtouint(val_str, 10, &val);
if (ret)
return ret;
for (i = 3; i >= 0; i--) {
unsigned int err;
err = abs(axp20x_ea->p_time[i].time - val);
if (err < best_err) {
best_err = err;
idx = axp20x_ea->p_time[i].idx;
}
if (!err)
break;
}
idx <<= ffs(axp20x_ea->mask) - 1;
ret = regmap_update_bits(axp20x_pek->axp20x->regmap,
AXP20X_PEK_KEY,
axp20x_ea->mask, idx);
if (ret != 0)
return -EINVAL;
return count;
}
static struct dev_ext_attribute axp20x_dev_attr_startup = {
.attr = __ATTR(startup, 0644, axp20x_show_ext_attr, axp20x_store_ext_attr),
.var = &axp20x_pek_startup_ext_attr,
};
static struct dev_ext_attribute axp20x_dev_attr_shutdown = {
.attr = __ATTR(shutdown, 0644, axp20x_show_ext_attr, axp20x_store_ext_attr),
.var = &axp20x_pek_shutdown_ext_attr,
};
static struct attribute *axp20x_attributes[] = {
&axp20x_dev_attr_startup.attr.attr,
&axp20x_dev_attr_shutdown.attr.attr,
NULL,
};
static const struct attribute_group axp20x_attribute_group = {
.attrs = axp20x_attributes,
};
static irqreturn_t axp20x_pek_irq(int irq, void *pwr)
{
struct input_dev *idev = pwr;
struct axp20x_pek *axp20x_pek = input_get_drvdata(idev);
if (irq == axp20x_pek->irq_dbr)
input_report_key(idev, KEY_POWER, true);
else if (irq == axp20x_pek->irq_dbf)
input_report_key(idev, KEY_POWER, false);
input_sync(idev);
return IRQ_HANDLED;
}
static void axp20x_remove_sysfs_group(void *_data)
{
struct device *dev = _data;
sysfs_remove_group(&dev->kobj, &axp20x_attribute_group);
}
static int axp20x_pek_probe(struct platform_device *pdev)
{
struct axp20x_pek *axp20x_pek;
struct axp20x_dev *axp20x;
struct input_dev *idev;
int error;
axp20x_pek = devm_kzalloc(&pdev->dev, sizeof(struct axp20x_pek),
GFP_KERNEL);
if (!axp20x_pek)
return -ENOMEM;
axp20x_pek->axp20x = dev_get_drvdata(pdev->dev.parent);
axp20x = axp20x_pek->axp20x;
axp20x_pek->irq_dbr = platform_get_irq_byname(pdev, "PEK_DBR");
if (axp20x_pek->irq_dbr < 0) {
dev_err(&pdev->dev, "No IRQ for PEK_DBR, error=%d\n",
axp20x_pek->irq_dbr);
return axp20x_pek->irq_dbr;
}
axp20x_pek->irq_dbr = regmap_irq_get_virq(axp20x->regmap_irqc,
axp20x_pek->irq_dbr);
axp20x_pek->irq_dbf = platform_get_irq_byname(pdev, "PEK_DBF");
if (axp20x_pek->irq_dbf < 0) {
dev_err(&pdev->dev, "No IRQ for PEK_DBF, error=%d\n",
axp20x_pek->irq_dbf);
return axp20x_pek->irq_dbf;
}
axp20x_pek->irq_dbf = regmap_irq_get_virq(axp20x->regmap_irqc,
axp20x_pek->irq_dbf);
axp20x_pek->input = devm_input_allocate_device(&pdev->dev);
if (!axp20x_pek->input)
return -ENOMEM;
idev = axp20x_pek->input;
idev->name = "axp20x-pek";
idev->phys = "m1kbd/input2";
idev->dev.parent = &pdev->dev;
input_set_capability(idev, EV_KEY, KEY_POWER);
input_set_drvdata(idev, axp20x_pek);
error = devm_request_any_context_irq(&pdev->dev, axp20x_pek->irq_dbr,
axp20x_pek_irq, 0,
"axp20x-pek-dbr", idev);
if (error < 0) {
dev_err(axp20x->dev, "Failed to request dbr IRQ#%d: %d\n",
axp20x_pek->irq_dbr, error);
return error;
}
error = devm_request_any_context_irq(&pdev->dev, axp20x_pek->irq_dbf,
axp20x_pek_irq, 0,
"axp20x-pek-dbf", idev);
if (error < 0) {
dev_err(axp20x->dev, "Failed to request dbf IRQ#%d: %d\n",
axp20x_pek->irq_dbf, error);
return error;
}
error = sysfs_create_group(&pdev->dev.kobj, &axp20x_attribute_group);
if (error) {
dev_err(axp20x->dev, "Failed to create sysfs attributes: %d\n",
error);
return error;
}
error = devm_add_action(&pdev->dev,
axp20x_remove_sysfs_group, &pdev->dev);
if (error) {
axp20x_remove_sysfs_group(&pdev->dev);
dev_err(&pdev->dev, "Failed to add sysfs cleanup action: %d\n",
error);
return error;
}
error = input_register_device(idev);
if (error) {
dev_err(axp20x->dev, "Can't register input device: %d\n",
error);
return error;
}
platform_set_drvdata(pdev, axp20x_pek);
return 0;
}
static struct platform_driver axp20x_pek_driver = {
.probe = axp20x_pek_probe,
.driver = {
.name = "axp20x-pek",
},
};
module_platform_driver(axp20x_pek_driver);
MODULE_DESCRIPTION("axp20x Power Button");
MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
MODULE_LICENSE("GPL");
drivers/input/misc/drv260x.c
View file @ 718749d5
......@@ -733,7 +733,6 @@ static struct i2c_driver drv260x_driver = {
};
module_i2c_driver(drv260x_driver);
MODULE_ALIAS("platform:drv260x-haptics");
MODULE_DESCRIPTION("TI DRV260x haptics driver");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
drivers/input/misc/drv2667.c
View file @ 718749d5
......@@ -492,7 +492,6 @@ static struct i2c_driver drv2667_driver = {
};
module_i2c_driver(drv2667_driver);
MODULE_ALIAS("platform:drv2667-haptics");
MODULE_DESCRIPTION("TI DRV2667 haptics driver");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
drivers/input/misc/e3x0-button.c 0 → 100644
View file @ 718749d5
/*
* Copyright (c) 2014, National Instruments Corp. All rights reserved.
*
* Driver for NI Ettus Research USRP E3x0 Button Driver
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/of.h>
#include <linux/slab.h>
static irqreturn_t e3x0_button_release_handler(int irq, void *data)
{
struct input_dev *idev = data;
input_report_key(idev, KEY_POWER, 0);
input_sync(idev);
return IRQ_HANDLED;
}
static irqreturn_t e3x0_button_press_handler(int irq, void *data)
{
struct input_dev *idev = data;
input_report_key(idev, KEY_POWER, 1);
pm_wakeup_event(idev->dev.parent, 0);
input_sync(idev);
return IRQ_HANDLED;
}
static int __maybe_unused e3x0_button_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
if (device_may_wakeup(dev))
enable_irq_wake(platform_get_irq_byname(pdev, "press"));
return 0;
}
static int __maybe_unused e3x0_button_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
if (device_may_wakeup(dev))
disable_irq_wake(platform_get_irq_byname(pdev, "press"));
return 0;
}
static SIMPLE_DEV_PM_OPS(e3x0_button_pm_ops,
e3x0_button_suspend, e3x0_button_resume);
static int e3x0_button_probe(struct platform_device *pdev)
{
struct input_dev *input;
int irq_press, irq_release;
int error;
irq_press = platform_get_irq_byname(pdev, "press");
if (irq_press < 0) {
dev_err(&pdev->dev, "No IRQ for 'press', error=%d\n",
irq_press);
return irq_press;
}
irq_release = platform_get_irq_byname(pdev, "release");
if (irq_release < 0) {
dev_err(&pdev->dev, "No IRQ for 'release', error=%d\n",
irq_release);
return irq_release;
}
input = devm_input_allocate_device(&pdev->dev);
if (!input)
return -ENOMEM;
input->name = "NI Ettus Research USRP E3x0 Button Driver";
input->phys = "e3x0_button/input0";
input->dev.parent = &pdev->dev;
input_set_capability(input, EV_KEY, KEY_POWER);
error = devm_request_irq(&pdev->dev, irq_press,
e3x0_button_press_handler, 0,
"e3x0-button", input);
if (error) {
dev_err(&pdev->dev, "Failed to request 'press' IRQ#%d: %d\n",
irq_press, error);
return error;
}
error = devm_request_irq(&pdev->dev, irq_release,
e3x0_button_release_handler, 0,
"e3x0-button", input);
if (error) {
dev_err(&pdev->dev, "Failed to request 'release' IRQ#%d: %d\n",
irq_release, error);
return error;
}
error = input_register_device(input);
if (error) {
dev_err(&pdev->dev, "Can't register input device: %d\n", error);
return error;
}
platform_set_drvdata(pdev, input);
device_init_wakeup(&pdev->dev, 1);
return 0;
}
static int e3x0_button_remove(struct platform_device *pdev)
{
device_init_wakeup(&pdev->dev, 0);
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id e3x0_button_match[] = {
{ .compatible = "ettus,e3x0-button", },
{ }
};
MODULE_DEVICE_TABLE(of, e3x0_button_match);
#endif
static struct platform_driver e3x0_button_driver = {
.driver = {
.name = "e3x0-button",
.of_match_table = of_match_ptr(e3x0_button_match),
.pm = &e3x0_button_pm_ops,
},
.probe = e3x0_button_probe,
.remove = e3x0_button_remove,
};
module_platform_driver(e3x0_button_driver);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Moritz Fischer <moritz.fischer@ettus.com>");
MODULE_DESCRIPTION("NI Ettus Research USRP E3x0 Button driver");
MODULE_ALIAS("platform:e3x0-button");
drivers/input/misc/regulator-haptic.c 0 → 100644
View file @ 718749d5
/*
* Regulator haptic driver
*
* Copyright (c) 2014 Samsung Electronics Co., Ltd.
* Author: Jaewon Kim <jaewon02.kim@samsung.com>
* Author: Hyunhee Kim <hyunhee.kim@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/input.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_data/regulator-haptic.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#define MAX_MAGNITUDE_SHIFT 16
struct regulator_haptic {
struct device *dev;
struct input_dev *input_dev;
struct regulator *regulator;
struct work_struct work;
struct mutex mutex;
bool active;
bool suspended;
unsigned int max_volt;
unsigned int min_volt;
unsigned int magnitude;
};
static int regulator_haptic_toggle(struct regulator_haptic *haptic, bool on)
{
int error;
if (haptic->active != on) {
error = on ? regulator_enable(haptic->regulator) :
regulator_disable(haptic->regulator);
if (error) {
dev_err(haptic->dev,
"failed to switch regulator %s: %d\n",
on ? "on" : "off", error);
return error;
}
haptic->active = on;
}
return 0;
}
static int regulator_haptic_set_voltage(struct regulator_haptic *haptic,
unsigned int magnitude)
{
u64 volt_mag_multi;
unsigned int intensity;
int error;
volt_mag_multi = (u64)(haptic->max_volt - haptic->min_volt) * magnitude;
intensity = (unsigned int)(volt_mag_multi >> MAX_MAGNITUDE_SHIFT);
error = regulator_set_voltage(haptic->regulator,
intensity + haptic->min_volt,
haptic->max_volt);
if (error) {
dev_err(haptic->dev, "cannot set regulator voltage to %d: %d\n",
intensity + haptic->min_volt, error);
return error;
}
regulator_haptic_toggle(haptic, !!magnitude);
return 0;
}
static void regulator_haptic_work(struct work_struct *work)
{
struct regulator_haptic *haptic = container_of(work,
struct regulator_haptic, work);
mutex_lock(&haptic->mutex);
if (!haptic->suspended)
regulator_haptic_set_voltage(haptic, haptic->magnitude);
mutex_unlock(&haptic->mutex);
}
static int regulator_haptic_play_effect(struct input_dev *input, void *data,
struct ff_effect *effect)
{
struct regulator_haptic *haptic = input_get_drvdata(input);
haptic->magnitude = effect->u.rumble.strong_magnitude;
if (!haptic->magnitude)
haptic->magnitude = effect->u.rumble.weak_magnitude;
schedule_work(&haptic->work);
return 0;
}
static void regulator_haptic_close(struct input_dev *input)
{
struct regulator_haptic *haptic = input_get_drvdata(input);
cancel_work_sync(&haptic->work);
regulator_haptic_set_voltage(haptic, 0);
}
static int __maybe_unused
regulator_haptic_parse_dt(struct device *dev, struct regulator_haptic *haptic)
{
struct device_node *node;
int error;
node = dev->of_node;
if(!node) {
dev_err(dev, "Missing dveice tree data\n");
return -EINVAL;
}
error = of_property_read_u32(node, "max-microvolt", &haptic->max_volt);
if (error) {
dev_err(dev, "cannot parse max-microvolt\n");
return error;
}
error = of_property_read_u32(node, "min-microvolt", &haptic->min_volt);
if (error) {
dev_err(dev, "cannot parse min-microvolt\n");
return error;
}
return 0;
}
static int regulator_haptic_probe(struct platform_device *pdev)
{
const struct regulator_haptic_data *pdata = dev_get_platdata(&pdev->dev);
struct regulator_haptic *haptic;
struct input_dev *input_dev;
int error;
haptic = devm_kzalloc(&pdev->dev, sizeof(*haptic), GFP_KERNEL);
if (!haptic)
return -ENOMEM;
platform_set_drvdata(pdev, haptic);
haptic->dev = &pdev->dev;
mutex_init(&haptic->mutex);
INIT_WORK(&haptic->work, regulator_haptic_work);
if (pdata) {
haptic->max_volt = pdata->max_volt;
haptic->min_volt = pdata->min_volt;
} else if (IS_ENABLED(CONFIG_OF)) {
error = regulator_haptic_parse_dt(&pdev->dev, haptic);
if (error)
return error;
} else {
dev_err(&pdev->dev, "Missing platform data\n");
return -EINVAL;
}
haptic->regulator = devm_regulator_get_exclusive(&pdev->dev, "haptic");
if (IS_ERR(haptic->regulator)) {
dev_err(&pdev->dev, "failed to get regulator\n");
return PTR_ERR(haptic->regulator);
}
input_dev = devm_input_allocate_device(&pdev->dev);
if (!input_dev)
return -ENOMEM;
haptic->input_dev = input_dev;
haptic->input_dev->name = "regulator-haptic";
haptic->input_dev->dev.parent = &pdev->dev;
haptic->input_dev->close = regulator_haptic_close;
input_set_drvdata(haptic->input_dev, haptic);
input_set_capability(haptic->input_dev, EV_FF, FF_RUMBLE);
error = input_ff_create_memless(input_dev, NULL,
regulator_haptic_play_effect);
if (error) {
dev_err(&pdev->dev, "failed to create force-feedback\n");
return error;
}
error = input_register_device(haptic->input_dev);
if (error) {
dev_err(&pdev->dev, "failed to register input device\n");
return error;
}
return 0;
}
static int __maybe_unused regulator_haptic_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct regulator_haptic *haptic = platform_get_drvdata(pdev);
int error;
error = mutex_lock_interruptible(&haptic->mutex);
if (error)
return error;
regulator_haptic_set_voltage(haptic, 0);
haptic->suspended = true;
mutex_unlock(&haptic->mutex);
return 0;
}
static int __maybe_unused regulator_haptic_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct regulator_haptic *haptic = platform_get_drvdata(pdev);
unsigned int magnitude;
mutex_lock(&haptic->mutex);
haptic->suspended = false;
magnitude = ACCESS_ONCE(haptic->magnitude);
if (magnitude)
regulator_haptic_set_voltage(haptic, magnitude);
mutex_unlock(&haptic->mutex);
return 0;
}
static SIMPLE_DEV_PM_OPS(regulator_haptic_pm_ops,
regulator_haptic_suspend, regulator_haptic_resume);
static struct of_device_id regulator_haptic_dt_match[] = {
{ .compatible = "regulator-haptic" },
{ /* sentinel */ },
};
static struct platform_driver regulator_haptic_driver = {
.probe = regulator_haptic_probe,
.driver = {
.name = "regulator-haptic",
.of_match_table = regulator_haptic_dt_match,
.pm = &regulator_haptic_pm_ops,
},
};
module_platform_driver(regulator_haptic_driver);
MODULE_AUTHOR("Jaewon Kim <jaewon02.kim@samsung.com>");
MODULE_AUTHOR("Hyunhee Kim <hyunhee.kim@samsung.com>");
MODULE_DESCRIPTION("Regulator haptic driver");
MODULE_LICENSE("GPL");
drivers/input/misc/tps65218-pwrbutton.c 0 → 100644
View file @ 718749d5
/*
* Texas Instruments' TPS65218 Power Button Input Driver
*
* Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
* Author: Felipe Balbi <balbi@ti.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/init.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mfd/tps65218.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
struct tps65218_pwrbutton {
struct device *dev;
struct tps65218 *tps;
struct input_dev *idev;
};
static irqreturn_t tps65218_pwr_irq(int irq, void *_pwr)
{
struct tps65218_pwrbutton *pwr = _pwr;
unsigned int reg;
int error;
error = tps65218_reg_read(pwr->tps, TPS65218_REG_STATUS, &reg);
if (error) {
dev_err(pwr->dev, "can't read register: %d\n", error);
goto out;
}
if (reg & TPS65218_STATUS_PB_STATE) {
input_report_key(pwr->idev, KEY_POWER, 1);
pm_wakeup_event(pwr->dev, 0);
} else {
input_report_key(pwr->idev, KEY_POWER, 0);
}
input_sync(pwr->idev);
out:
return IRQ_HANDLED;
}
static int tps65218_pwron_probe(struct platform_device *pdev)
{
struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent);
struct device *dev = &pdev->dev;
struct tps65218_pwrbutton *pwr;
struct input_dev *idev;
int error;
int irq;
pwr = devm_kzalloc(dev, sizeof(*pwr), GFP_KERNEL);
if (!pwr)
return -ENOMEM;
idev = devm_input_allocate_device(dev);
if (!idev)
return -ENOMEM;
idev->name = "tps65218_pwrbutton";
idev->phys = "tps65218_pwrbutton/input0";
idev->dev.parent = dev;
idev->id.bustype = BUS_I2C;
input_set_capability(idev, EV_KEY, KEY_POWER);
pwr->tps = tps;
pwr->dev = dev;
pwr->idev = idev;
platform_set_drvdata(pdev, pwr);
device_init_wakeup(dev, true);
irq = platform_get_irq(pdev, 0);
error = devm_request_threaded_irq(dev, irq, NULL, tps65218_pwr_irq,
IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING |
IRQF_ONESHOT,
"tps65218-pwrbutton", pwr);
if (error) {
dev_err(dev, "failed to request IRQ #%d: %d\n",
irq, error);
return error;
}
error= input_register_device(idev);
if (error) {
dev_err(dev, "Can't register power button: %d\n", error);
return error;
}
return 0;
}
static struct of_device_id of_tps65218_pwr_match[] = {
{ .compatible = "ti,tps65218-pwrbutton" },
{ },
};
MODULE_DEVICE_TABLE(of, of_tps65218_pwr_match);
static struct platform_driver tps65218_pwron_driver = {
.probe = tps65218_pwron_probe,
.driver = {
.name = "tps65218_pwrbutton",
.of_match_table = of_tps65218_pwr_match,
},
};
module_platform_driver(tps65218_pwron_driver);
MODULE_DESCRIPTION("TPS65218 Power Button");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
drivers/input/mouse/Kconfig
View file @ 718749d5
......@@ -105,19 +105,12 @@ config MOUSE_PS2_ELANTECH
Say Y here if you have an Elantech PS/2 touchpad connected
to your system.
Note that if you enable this driver you will need an updated
X.org Synaptics driver that does not require ABS_PRESSURE
reports from the touchpad (i.e. post 1.5.0 version). You can
grab a patch for the driver here:
http://userweb.kernel.org/~dtor/synaptics-no-abspressure.patch
If unsure, say N.
This driver exposes some configuration registers via sysfs
entries. For further information,
see <file:Documentation/input/elantech.txt>.
If unsure, say N.
config MOUSE_PS2_SENTELIC
bool "Sentelic Finger Sensing Pad PS/2 protocol extension"
depends on MOUSE_PS2
......@@ -146,6 +139,16 @@ config MOUSE_PS2_OLPC
If unsure, say N.
config MOUSE_PS2_FOCALTECH
bool "FocalTech PS/2 mouse protocol extension" if EXPERT
default y
depends on MOUSE_PS2
help
Say Y here if you have a FocalTech PS/2 TouchPad connected to
your system.
If unsure, say Y.
config MOUSE_SERIAL
tristate "Serial mouse"
select SERIO
......@@ -206,6 +209,7 @@ config MOUSE_BCM5974
config MOUSE_CYAPA
tristate "Cypress APA I2C Trackpad support"
depends on I2C
select CRC_ITU_T
help
This driver adds support for Cypress All Points Addressable (APA)
I2C Trackpads, including the ones used in 2012 Samsung Chromebooks.
......
drivers/input/mouse/Makefile
View file @ 718749d5
......@@ -8,7 +8,7 @@ obj-$(CONFIG_MOUSE_AMIGA) += amimouse.o
obj-$(CONFIG_MOUSE_APPLETOUCH) += appletouch.o
obj-$(CONFIG_MOUSE_ATARI) += atarimouse.o
obj-$(CONFIG_MOUSE_BCM5974) += bcm5974.o
obj-$(CONFIG_MOUSE_CYAPA) += cyapa.o
obj-$(CONFIG_MOUSE_CYAPA) += cyapatp.o
obj-$(CONFIG_MOUSE_ELAN_I2C) += elan_i2c.o
obj-$(CONFIG_MOUSE_GPIO) += gpio_mouse.o
obj-$(CONFIG_MOUSE_INPORT) += inport.o
......@@ -24,6 +24,7 @@ obj-$(CONFIG_MOUSE_SYNAPTICS_I2C) += synaptics_i2c.o
obj-$(CONFIG_MOUSE_SYNAPTICS_USB) += synaptics_usb.o
obj-$(CONFIG_MOUSE_VSXXXAA) += vsxxxaa.o
cyapatp-objs := cyapa.o cyapa_gen3.o cyapa_gen5.o
psmouse-objs := psmouse-base.o synaptics.o focaltech.o
psmouse-$(CONFIG_MOUSE_PS2_ALPS) += alps.o
......
drivers/input/mouse/alps.c
View file @ 718749d5
......@@ -435,7 +435,7 @@ static void alps_report_mt_data(struct psmouse *psmouse, int n)
struct alps_fields *f = &priv->f;
int i, slot[MAX_TOUCHES];
input_mt_assign_slots(dev, slot, f->mt, n);
input_mt_assign_slots(dev, slot, f->mt, n, 0);
for (i = 0; i < n; i++)
alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y);
......@@ -475,6 +475,13 @@ static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
struct input_dev *dev = priv->dev2;
int x, y, z, left, right, middle;
/* It should be a DualPoint when received trackstick packet */
if (!(priv->flags & ALPS_DUALPOINT)) {
psmouse_warn(psmouse,
"Rejected trackstick packet from non DualPoint device");
return;
}
/* Sanity check packet */
if (!(packet[0] & 0x40)) {
psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
......@@ -699,7 +706,8 @@ static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
alps_report_semi_mt_data(psmouse, fingers);
if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
if ((priv->flags & ALPS_DUALPOINT) &&
!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
input_report_key(dev2, BTN_LEFT, f->ts_left);
input_report_key(dev2, BTN_RIGHT, f->ts_right);
input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
......@@ -743,8 +751,11 @@ static void alps_process_packet_v6(struct psmouse *psmouse)
*/
if (packet[5] == 0x7F) {
/* It should be a DualPoint when received Trackpoint packet */
if (!(priv->flags & ALPS_DUALPOINT))
if (!(priv->flags & ALPS_DUALPOINT)) {
psmouse_warn(psmouse,
"Rejected trackstick packet from non DualPoint device");
return;
}
/* Trackpoint packet */
x = packet[1] | ((packet[3] & 0x20) << 2);
......@@ -1026,6 +1037,13 @@ static void alps_process_trackstick_packet_v7(struct psmouse *psmouse)
struct input_dev *dev2 = priv->dev2;
int x, y, z, left, right, middle;
/* It should be a DualPoint when received trackstick packet */
if (!(priv->flags & ALPS_DUALPOINT)) {
psmouse_warn(psmouse,
"Rejected trackstick packet from non DualPoint device");
return;
}
/*
* b7 b6 b5 b4 b3 b2 b1 b0
* Byte0 0 1 0 0 1 0 0 0
......@@ -2443,14 +2461,24 @@ int alps_init(struct psmouse *psmouse)
dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
}
if (priv->flags & ALPS_DUALPOINT) {
/*
* format of input device name is: "protocol vendor name"
* see function psmouse_switch_protocol() in psmouse-base.c
*/
dev2->name = "AlpsPS/2 ALPS DualPoint Stick";
dev2->id.product = PSMOUSE_ALPS;
dev2->id.version = priv->proto_version;
} else {
dev2->name = "PS/2 ALPS Mouse";
dev2->id.product = PSMOUSE_PS2;
dev2->id.version = 0x0000;
}
snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
dev2->phys = priv->phys;
dev2->name = (priv->flags & ALPS_DUALPOINT) ?
"DualPoint Stick" : "ALPS PS/2 Device";
dev2->id.bustype = BUS_I8042;
dev2->id.vendor = 0x0002;
dev2->id.product = PSMOUSE_ALPS;
dev2->id.version = 0x0000;
dev2->dev.parent = &psmouse->ps2dev.serio->dev;
dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
......
drivers/input/mouse/bcm5974.c
View file @ 718749d5
......@@ -564,7 +564,7 @@ static int report_tp_state(struct bcm5974 *dev, int size)
dev->index[n++] = &f[i];
}
input_mt_assign_slots(input, dev->slots, dev->pos, n);
input_mt_assign_slots(input, dev->slots, dev->pos, n, 0);
for (i = 0; i < n; i++)
report_finger_data(input, dev->slots[i],
......
drivers/input/mouse/cyapa.c
View file @ 718749d5
......@@ -20,408 +20,131 @@
#include <linux/input/mt.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/pm_runtime.h>
#include <linux/acpi.h>
#include "cyapa.h"
/* APA trackpad firmware generation */
#define CYAPA_GEN3 0x03 /* support MT-protocol B with tracking ID. */
#define CYAPA_NAME "Cypress APA Trackpad (cyapa)"
/* commands for read/write registers of Cypress trackpad */
#define CYAPA_CMD_SOFT_RESET 0x00
#define CYAPA_CMD_POWER_MODE 0x01
#define CYAPA_CMD_DEV_STATUS 0x02
#define CYAPA_CMD_GROUP_DATA 0x03
#define CYAPA_CMD_GROUP_CMD 0x04
#define CYAPA_CMD_GROUP_QUERY 0x05
#define CYAPA_CMD_BL_STATUS 0x06
#define CYAPA_CMD_BL_HEAD 0x07
#define CYAPA_CMD_BL_CMD 0x08
#define CYAPA_CMD_BL_DATA 0x09
#define CYAPA_CMD_BL_ALL 0x0a
#define CYAPA_CMD_BLK_PRODUCT_ID 0x0b
#define CYAPA_CMD_BLK_HEAD 0x0c
/* report data start reg offset address. */
#define DATA_REG_START_OFFSET 0x0000
#define BL_HEAD_OFFSET 0x00
#define BL_DATA_OFFSET 0x10
/*
* Operational Device Status Register
*
* bit 7: Valid interrupt source
* bit 6 - 4: Reserved
* bit 3 - 2: Power status
* bit 1 - 0: Device status
*/
#define REG_OP_STATUS 0x00
#define OP_STATUS_SRC 0x80
#define OP_STATUS_POWER 0x0c
#define OP_STATUS_DEV 0x03
#define OP_STATUS_MASK (OP_STATUS_SRC | OP_STATUS_POWER | OP_STATUS_DEV)
/*
* Operational Finger Count/Button Flags Register
*
* bit 7 - 4: Number of touched finger
* bit 3: Valid data
* bit 2: Middle Physical Button
* bit 1: Right Physical Button
* bit 0: Left physical Button
*/
#define REG_OP_DATA1 0x01
#define OP_DATA_VALID 0x08
#define OP_DATA_MIDDLE_BTN 0x04
#define OP_DATA_RIGHT_BTN 0x02
#define OP_DATA_LEFT_BTN 0x01
#define OP_DATA_BTN_MASK (OP_DATA_MIDDLE_BTN | OP_DATA_RIGHT_BTN | \
OP_DATA_LEFT_BTN)
/*
* Bootloader Status Register
*
* bit 7: Busy
* bit 6 - 5: Reserved
* bit 4: Bootloader running
* bit 3 - 1: Reserved
* bit 0: Checksum valid
*/
#define REG_BL_STATUS 0x01
#define BL_STATUS_BUSY 0x80
#define BL_STATUS_RUNNING 0x10
#define BL_STATUS_DATA_VALID 0x08
#define BL_STATUS_CSUM_VALID 0x01
/*
* Bootloader Error Register
*
* bit 7: Invalid
* bit 6: Invalid security key
* bit 5: Bootloading
* bit 4: Command checksum
* bit 3: Flash protection error
* bit 2: Flash checksum error
* bit 1 - 0: Reserved
*/
#define REG_BL_ERROR 0x02
#define BL_ERROR_INVALID 0x80
#define BL_ERROR_INVALID_KEY 0x40
#define BL_ERROR_BOOTLOADING 0x20
#define BL_ERROR_CMD_CSUM 0x10
#define BL_ERROR_FLASH_PROT 0x08
#define BL_ERROR_FLASH_CSUM 0x04
#define BL_STATUS_SIZE 3 /* length of bootloader status registers */
#define BLK_HEAD_BYTES 32
#define PRODUCT_ID_SIZE 16
#define QUERY_DATA_SIZE 27
#define REG_PROTOCOL_GEN_QUERY_OFFSET 20
#define REG_OFFSET_DATA_BASE 0x0000
#define REG_OFFSET_COMMAND_BASE 0x0028
#define REG_OFFSET_QUERY_BASE 0x002a
#define CAPABILITY_LEFT_BTN_MASK (0x01 << 3)
#define CAPABILITY_RIGHT_BTN_MASK (0x01 << 4)
#define CAPABILITY_MIDDLE_BTN_MASK (0x01 << 5)
#define CAPABILITY_BTN_MASK (CAPABILITY_LEFT_BTN_MASK | \
CAPABILITY_RIGHT_BTN_MASK | \
CAPABILITY_MIDDLE_BTN_MASK)
#define CYAPA_OFFSET_SOFT_RESET REG_OFFSET_COMMAND_BASE
#define REG_OFFSET_POWER_MODE (REG_OFFSET_COMMAND_BASE + 1)
#define PWR_MODE_MASK 0xfc
#define PWR_MODE_FULL_ACTIVE (0x3f << 2)
#define PWR_MODE_IDLE (0x05 << 2) /* default sleep time is 50 ms. */
#define PWR_MODE_OFF (0x00 << 2)
#define PWR_STATUS_MASK 0x0c
#define PWR_STATUS_ACTIVE (0x03 << 2)
#define PWR_STATUS_IDLE (0x02 << 2)
#define PWR_STATUS_OFF (0x00 << 2)
/*
* CYAPA trackpad device states.
* Used in register 0x00, bit1-0, DeviceStatus field.
* Other values indicate device is in an abnormal state and must be reset.
*/
#define CYAPA_DEV_NORMAL 0x03
#define CYAPA_DEV_BUSY 0x01
enum cyapa_state {
CYAPA_STATE_OP,
CYAPA_STATE_BL_IDLE,
CYAPA_STATE_BL_ACTIVE,
CYAPA_STATE_BL_BUSY,
CYAPA_STATE_NO_DEVICE,
};
struct cyapa_touch {
/*
* high bits or x/y position value
* bit 7 - 4: high 4 bits of x position value
* bit 3 - 0: high 4 bits of y position value
*/
u8 xy_hi;
u8 x_lo; /* low 8 bits of x position value. */
u8 y_lo; /* low 8 bits of y position value. */
u8 pressure;
/* id range is 1 - 15. It is incremented with every new touch. */
u8 id;
} __packed;
/* The touch.id is used as the MT slot id, thus max MT slot is 15 */
#define CYAPA_MAX_MT_SLOTS 15
struct cyapa_reg_data {
/*
* bit 0 - 1: device status
* bit 3 - 2: power mode
* bit 6 - 4: reserved
* bit 7: interrupt valid bit
*/
u8 device_status;
/*
* bit 7 - 4: number of fingers currently touching pad
* bit 3: valid data check bit
* bit 2: middle mechanism button state if exists
* bit 1: right mechanism button state if exists
* bit 0: left mechanism button state if exists
*/
u8 finger_btn;
/* CYAPA reports up to 5 touches per packet. */
struct cyapa_touch touches[5];
} __packed;
/* The main device structure */
struct cyapa {
enum cyapa_state state;
struct i2c_client *client;
struct input_dev *input;
char phys[32]; /* device physical location */
bool irq_wake; /* irq wake is enabled */
bool smbus;
/* read from query data region. */
char product_id[16];
u8 btn_capability;
u8 gen;
int max_abs_x;
int max_abs_y;
int physical_size_x;
int physical_size_y;
};
static const u8 bl_deactivate[] = { 0x00, 0xff, 0x3b, 0x00, 0x01, 0x02, 0x03,
0x04, 0x05, 0x06, 0x07 };
static const u8 bl_exit[] = { 0x00, 0xff, 0xa5, 0x00, 0x01, 0x02, 0x03, 0x04,
0x05, 0x06, 0x07 };
struct cyapa_cmd_len {
u8 cmd;
u8 len;
};
#define CYAPA_ADAPTER_FUNC_NONE 0
#define CYAPA_ADAPTER_FUNC_I2C 1
#define CYAPA_ADAPTER_FUNC_SMBUS 2
#define CYAPA_ADAPTER_FUNC_BOTH 3
/*
* macros for SMBus communication
*/
#define SMBUS_READ 0x01
#define SMBUS_WRITE 0x00
#define SMBUS_ENCODE_IDX(cmd, idx) ((cmd) | (((idx) & 0x03) << 1))
#define SMBUS_ENCODE_RW(cmd, rw) ((cmd) | ((rw) & 0x01))
#define SMBUS_BYTE_BLOCK_CMD_MASK 0x80
#define SMBUS_GROUP_BLOCK_CMD_MASK 0x40
/* for byte read/write command */
#define CMD_RESET 0
#define CMD_POWER_MODE 1
#define CMD_DEV_STATUS 2
#define SMBUS_BYTE_CMD(cmd) (((cmd) & 0x3f) << 1)
#define CYAPA_SMBUS_RESET SMBUS_BYTE_CMD(CMD_RESET)
#define CYAPA_SMBUS_POWER_MODE SMBUS_BYTE_CMD(CMD_POWER_MODE)
#define CYAPA_SMBUS_DEV_STATUS SMBUS_BYTE_CMD(CMD_DEV_STATUS)
/* for group registers read/write command */
#define REG_GROUP_DATA 0
#define REG_GROUP_CMD 2
#define REG_GROUP_QUERY 3
#define SMBUS_GROUP_CMD(grp) (0x80 | (((grp) & 0x07) << 3))
#define CYAPA_SMBUS_GROUP_DATA SMBUS_GROUP_CMD(REG_GROUP_DATA)
#define CYAPA_SMBUS_GROUP_CMD SMBUS_GROUP_CMD(REG_GROUP_CMD)
#define CYAPA_SMBUS_GROUP_QUERY SMBUS_GROUP_CMD(REG_GROUP_QUERY)
/* for register block read/write command */
#define CMD_BL_STATUS 0
#define CMD_BL_HEAD 1
#define CMD_BL_CMD 2
#define CMD_BL_DATA 3
#define CMD_BL_ALL 4
#define CMD_BLK_PRODUCT_ID 5
#define CMD_BLK_HEAD 6
#define SMBUS_BLOCK_CMD(cmd) (0xc0 | (((cmd) & 0x1f) << 1))
/* register block read/write command in bootloader mode */
#define CYAPA_SMBUS_BL_STATUS SMBUS_BLOCK_CMD(CMD_BL_STATUS)
#define CYAPA_SMBUS_BL_HEAD SMBUS_BLOCK_CMD(CMD_BL_HEAD)
#define CYAPA_SMBUS_BL_CMD SMBUS_BLOCK_CMD(CMD_BL_CMD)
#define CYAPA_SMBUS_BL_DATA SMBUS_BLOCK_CMD(CMD_BL_DATA)
#define CYAPA_SMBUS_BL_ALL SMBUS_BLOCK_CMD(CMD_BL_ALL)
/* register block read/write command in operational mode */
#define CYAPA_SMBUS_BLK_PRODUCT_ID SMBUS_BLOCK_CMD(CMD_BLK_PRODUCT_ID)
#define CYAPA_SMBUS_BLK_HEAD SMBUS_BLOCK_CMD(CMD_BLK_HEAD)
static const struct cyapa_cmd_len cyapa_i2c_cmds[] = {
{ CYAPA_OFFSET_SOFT_RESET, 1 },
{ REG_OFFSET_COMMAND_BASE + 1, 1 },
{ REG_OFFSET_DATA_BASE, 1 },
{ REG_OFFSET_DATA_BASE, sizeof(struct cyapa_reg_data) },
{ REG_OFFSET_COMMAND_BASE, 0 },
{ REG_OFFSET_QUERY_BASE, QUERY_DATA_SIZE },
{ BL_HEAD_OFFSET, 3 },
{ BL_HEAD_OFFSET, 16 },
{ BL_HEAD_OFFSET, 16 },
{ BL_DATA_OFFSET, 16 },
{ BL_HEAD_OFFSET, 32 },
{ REG_OFFSET_QUERY_BASE, PRODUCT_ID_SIZE },
{ REG_OFFSET_DATA_BASE, 32 }
};
#define CYAPA_FW_NAME "cyapa.bin"
static const struct cyapa_cmd_len cyapa_smbus_cmds[] = {
{ CYAPA_SMBUS_RESET, 1 },
{ CYAPA_SMBUS_POWER_MODE, 1 },
{ CYAPA_SMBUS_DEV_STATUS, 1 },
{ CYAPA_SMBUS_GROUP_DATA, sizeof(struct cyapa_reg_data) },
{ CYAPA_SMBUS_GROUP_CMD, 2 },
{ CYAPA_SMBUS_GROUP_QUERY, QUERY_DATA_SIZE },
{ CYAPA_SMBUS_BL_STATUS, 3 },
{ CYAPA_SMBUS_BL_HEAD, 16 },
{ CYAPA_SMBUS_BL_CMD, 16 },
{ CYAPA_SMBUS_BL_DATA, 16 },
{ CYAPA_SMBUS_BL_ALL, 32 },
{ CYAPA_SMBUS_BLK_PRODUCT_ID, PRODUCT_ID_SIZE },
{ CYAPA_SMBUS_BLK_HEAD, 16 },
};
const char product_id[] = "CYTRA";
static ssize_t cyapa_i2c_reg_read_block(struct cyapa *cyapa, u8 reg, size_t len,
u8 *values)
static int cyapa_reinitialize(struct cyapa *cyapa);
static inline bool cyapa_is_bootloader_mode(struct cyapa *cyapa)
{
return i2c_smbus_read_i2c_block_data(cyapa->client, reg, len, values);
if (cyapa->gen == CYAPA_GEN5 && cyapa->state == CYAPA_STATE_GEN5_BL)
return true;
if (cyapa->gen == CYAPA_GEN3 &&
cyapa->state >= CYAPA_STATE_BL_BUSY &&
cyapa->state <= CYAPA_STATE_BL_ACTIVE)
return true;
return false;
}
static ssize_t cyapa_i2c_reg_write_block(struct cyapa *cyapa, u8 reg,
size_t len, const u8 *values)
static inline bool cyapa_is_operational_mode(struct cyapa *cyapa)
{
return i2c_smbus_write_i2c_block_data(cyapa->client, reg, len, values);
if (cyapa->gen == CYAPA_GEN5 && cyapa->state == CYAPA_STATE_GEN5_APP)
return true;
if (cyapa->gen == CYAPA_GEN3 && cyapa->state == CYAPA_STATE_OP)
return true;
return false;
}
/*
* cyapa_smbus_read_block - perform smbus block read command
* @cyapa - private data structure of the driver
* @cmd - the properly encoded smbus command
* @len - expected length of smbus command result
* @values - buffer to store smbus command result
*
* Returns negative errno, else the number of bytes written.
*
* Note:
* In trackpad device, the memory block allocated for I2C register map
* is 256 bytes, so the max read block for I2C bus is 256 bytes.
*/
static ssize_t cyapa_smbus_read_block(struct cyapa *cyapa, u8 cmd, size_t len,
u8 *values)
/* Returns 0 on success, else negative errno on failure. */
static ssize_t cyapa_i2c_read(struct cyapa *cyapa, u8 reg, size_t len,
u8 *values)
{
ssize_t ret;
u8 index;
u8 smbus_cmd;
u8 *buf;
struct i2c_client *client = cyapa->client;
struct i2c_msg msgs[] = {
{
.addr = client->addr,
.flags = 0,
.len = 1,
.buf = &reg,
},
{
.addr = client->addr,
.flags = I2C_M_RD,
.len = len,
.buf = values,
},
};
int ret;
if (!(SMBUS_BYTE_BLOCK_CMD_MASK & cmd))
return -EINVAL;
if (SMBUS_GROUP_BLOCK_CMD_MASK & cmd) {
/* read specific block registers command. */
smbus_cmd = SMBUS_ENCODE_RW(cmd, SMBUS_READ);
ret = i2c_smbus_read_block_data(client, smbus_cmd, values);
goto out;
}
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
ret = 0;
for (index = 0; index * I2C_SMBUS_BLOCK_MAX < len; index++) {
smbus_cmd = SMBUS_ENCODE_IDX(cmd, index);
smbus_cmd = SMBUS_ENCODE_RW(smbus_cmd, SMBUS_READ);
buf = values + I2C_SMBUS_BLOCK_MAX * index;
ret = i2c_smbus_read_block_data(client, smbus_cmd, buf);
if (ret < 0)
goto out;
}
if (ret != ARRAY_SIZE(msgs))
return ret < 0 ? ret : -EIO;
out:
return ret > 0 ? len : ret;
return 0;
}
static s32 cyapa_read_byte(struct cyapa *cyapa, u8 cmd_idx)
/**
* cyapa_i2c_write - Execute i2c block data write operation
* @cyapa: Handle to this driver
* @ret: Offset of the data to written in the register map
* @len: number of bytes to write
* @values: Data to be written
*
* Return negative errno code on error; return zero when success.
*/
static int cyapa_i2c_write(struct cyapa *cyapa, u8 reg,
size_t len, const void *values)
{
u8 cmd;
struct i2c_client *client = cyapa->client;
char buf[32];
int ret;
if (cyapa->smbus) {
cmd = cyapa_smbus_cmds[cmd_idx].cmd;
cmd = SMBUS_ENCODE_RW(cmd, SMBUS_READ);
} else {
cmd = cyapa_i2c_cmds[cmd_idx].cmd;
}
return i2c_smbus_read_byte_data(cyapa->client, cmd);
}
if (len > sizeof(buf) - 1)
return -ENOMEM;
static s32 cyapa_write_byte(struct cyapa *cyapa, u8 cmd_idx, u8 value)
{
u8 cmd;
buf[0] = reg;
memcpy(&buf[1], values, len);
if (cyapa->smbus) {
cmd = cyapa_smbus_cmds[cmd_idx].cmd;
cmd = SMBUS_ENCODE_RW(cmd, SMBUS_WRITE);
} else {
cmd = cyapa_i2c_cmds[cmd_idx].cmd;
}
return i2c_smbus_write_byte_data(cyapa->client, cmd, value);
ret = i2c_master_send(client, buf, len + 1);
if (ret != len + 1)
return ret < 0 ? ret : -EIO;
return 0;
}
static ssize_t cyapa_read_block(struct cyapa *cyapa, u8 cmd_idx, u8 *values)
static u8 cyapa_check_adapter_functionality(struct i2c_client *client)
{
u8 cmd;
size_t len;
u8 ret = CYAPA_ADAPTER_FUNC_NONE;
if (cyapa->smbus) {
cmd = cyapa_smbus_cmds[cmd_idx].cmd;
len = cyapa_smbus_cmds[cmd_idx].len;
return cyapa_smbus_read_block(cyapa, cmd, len, values);
} else {
cmd = cyapa_i2c_cmds[cmd_idx].cmd;
len = cyapa_i2c_cmds[cmd_idx].len;
return cyapa_i2c_reg_read_block(cyapa, cmd, len, values);
}
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
ret |= CYAPA_ADAPTER_FUNC_I2C;
if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_SMBUS_BLOCK_DATA |
I2C_FUNC_SMBUS_I2C_BLOCK))
ret |= CYAPA_ADAPTER_FUNC_SMBUS;
return ret;
}
/*
* Query device for its current operating state.
*
*/
static int cyapa_get_state(struct cyapa *cyapa)
{
u8 status[BL_STATUS_SIZE];
u8 cmd[32];
/* The i2c address of gen4 and gen5 trackpad device must be even. */
bool even_addr = ((cyapa->client->addr & 0x0001) == 0);
bool smbus = false;
int retries = 2;
int error;
cyapa->state = CYAPA_STATE_NO_DEVICE;
......@@ -433,39 +156,74 @@ static int cyapa_get_state(struct cyapa *cyapa)
*
*/
error = cyapa_i2c_reg_read_block(cyapa, BL_HEAD_OFFSET, BL_STATUS_SIZE,
status);
status);
/*
* On smbus systems in OP mode, the i2c_reg_read will fail with
* -ETIMEDOUT. In this case, try again using the smbus equivalent
* command. This should return a BL_HEAD indicating CYAPA_STATE_OP.
*/
if (cyapa->smbus && (error == -ETIMEDOUT || error == -ENXIO))
error = cyapa_read_block(cyapa, CYAPA_CMD_BL_STATUS, status);
if (cyapa->smbus && (error == -ETIMEDOUT || error == -ENXIO)) {
if (!even_addr)
error = cyapa_read_block(cyapa,
CYAPA_CMD_BL_STATUS, status);
smbus = true;
}
if (error != BL_STATUS_SIZE)
goto error;
if ((status[REG_OP_STATUS] & OP_STATUS_SRC) == OP_STATUS_SRC) {
switch (status[REG_OP_STATUS] & OP_STATUS_DEV) {
case CYAPA_DEV_NORMAL:
case CYAPA_DEV_BUSY:
cyapa->state = CYAPA_STATE_OP;
break;
default:
error = -EAGAIN;
goto error;
/*
* Detect trackpad protocol based on characteristic registers and bits.
*/
do {
cyapa->status[REG_OP_STATUS] = status[REG_OP_STATUS];
cyapa->status[REG_BL_STATUS] = status[REG_BL_STATUS];
cyapa->status[REG_BL_ERROR] = status[REG_BL_ERROR];
if (cyapa->gen == CYAPA_GEN_UNKNOWN ||
cyapa->gen == CYAPA_GEN3) {
error = cyapa_gen3_ops.state_parse(cyapa,
status, BL_STATUS_SIZE);
if (!error)
goto out_detected;
}
} else {
if (status[REG_BL_STATUS] & BL_STATUS_BUSY)
cyapa->state = CYAPA_STATE_BL_BUSY;
else if (status[REG_BL_ERROR] & BL_ERROR_BOOTLOADING)
cyapa->state = CYAPA_STATE_BL_ACTIVE;
else
cyapa->state = CYAPA_STATE_BL_IDLE;
}
if ((cyapa->gen == CYAPA_GEN_UNKNOWN ||
cyapa->gen == CYAPA_GEN5) &&
!smbus && even_addr) {
error = cyapa_gen5_ops.state_parse(cyapa,
status, BL_STATUS_SIZE);
if (!error)
goto out_detected;
}
/*
* Write 0x00 0x00 to trackpad device to force update its
* status, then redo the detection again.
*/
if (!smbus) {
cmd[0] = 0x00;
cmd[1] = 0x00;
error = cyapa_i2c_write(cyapa, 0, 2, cmd);
if (error)
goto error;
msleep(50);
error = cyapa_i2c_read(cyapa, BL_HEAD_OFFSET,
BL_STATUS_SIZE, status);
if (error)
goto error;
}
} while (--retries > 0 && !smbus);
goto error;
out_detected:
if (cyapa->state <= CYAPA_STATE_BL_BUSY)
return -EAGAIN;
return 0;
error:
return (error < 0) ? error : -EAGAIN;
}
......@@ -482,143 +240,23 @@ static int cyapa_get_state(struct cyapa *cyapa)
* Returns:
* 0 when the device eventually responds with a valid non-busy state.
* -ETIMEDOUT if device never responds (too many -EAGAIN)
* < 0 other errors
* -EAGAIN if bootload is busy, or unknown state.
* < 0 other errors
*/
static int cyapa_poll_state(struct cyapa *cyapa, unsigned int timeout)
int cyapa_poll_state(struct cyapa *cyapa, unsigned int timeout)
{
int error;
int tries = timeout / 100;
error = cyapa_get_state(cyapa);
while ((error || cyapa->state >= CYAPA_STATE_BL_BUSY) && tries--) {
msleep(100);
do {
error = cyapa_get_state(cyapa);
}
return (error == -EAGAIN || error == -ETIMEDOUT) ? -ETIMEDOUT : error;
}
static int cyapa_bl_deactivate(struct cyapa *cyapa)
{
int error;
error = cyapa_i2c_reg_write_block(cyapa, 0, sizeof(bl_deactivate),
bl_deactivate);
if (error)
return error;
/* wait for bootloader to switch to idle state; should take < 100ms */
msleep(100);
error = cyapa_poll_state(cyapa, 500);
if (error)
return error;
if (cyapa->state != CYAPA_STATE_BL_IDLE)
return -EAGAIN;
return 0;
}
/*
* Exit bootloader
*
* Send bl_exit command, then wait 50 - 100 ms to let device transition to
* operational mode. If this is the first time the device's firmware is
* running, it can take up to 2 seconds to calibrate its sensors. So, poll
* the device's new state for up to 2 seconds.
*
* Returns:
* -EIO failure while reading from device
* -EAGAIN device is stuck in bootloader, b/c it has invalid firmware
* 0 device is supported and in operational mode
*/
static int cyapa_bl_exit(struct cyapa *cyapa)
{
int error;
error = cyapa_i2c_reg_write_block(cyapa, 0, sizeof(bl_exit), bl_exit);
if (error)
return error;
/*
* Wait for bootloader to exit, and operation mode to start.
* Normally, this takes at least 50 ms.
*/
usleep_range(50000, 100000);
/*
* In addition, when a device boots for the first time after being
* updated to new firmware, it must first calibrate its sensors, which
* can take up to an additional 2 seconds.
*/
error = cyapa_poll_state(cyapa, 2000);
if (error < 0)
return error;
if (cyapa->state != CYAPA_STATE_OP)
return -EAGAIN;
return 0;
}
/*
* Set device power mode
*
*/
static int cyapa_set_power_mode(struct cyapa *cyapa, u8 power_mode)
{
struct device *dev = &cyapa->client->dev;
int ret;
u8 power;
if (cyapa->state != CYAPA_STATE_OP)
return 0;
ret = cyapa_read_byte(cyapa, CYAPA_CMD_POWER_MODE);
if (ret < 0)
return ret;
power = ret & ~PWR_MODE_MASK;
power |= power_mode & PWR_MODE_MASK;
ret = cyapa_write_byte(cyapa, CYAPA_CMD_POWER_MODE, power);
if (ret < 0) {
dev_err(dev, "failed to set power_mode 0x%02x err = %d\n",
power_mode, ret);
return ret;
}
return 0;
}
static int cyapa_get_query_data(struct cyapa *cyapa)
{
u8 query_data[QUERY_DATA_SIZE];
int ret;
if (cyapa->state != CYAPA_STATE_OP)
return -EBUSY;
ret = cyapa_read_block(cyapa, CYAPA_CMD_GROUP_QUERY, query_data);
if (ret < 0)
return ret;
if (ret != QUERY_DATA_SIZE)
return -EIO;
memcpy(&cyapa->product_id[0], &query_data[0], 5);
cyapa->product_id[5] = '-';
memcpy(&cyapa->product_id[6], &query_data[5], 6);
cyapa->product_id[12] = '-';
memcpy(&cyapa->product_id[13], &query_data[11], 2);
cyapa->product_id[15] = '\0';
cyapa->btn_capability = query_data[19] & CAPABILITY_BTN_MASK;
cyapa->gen = query_data[20] & 0x0f;
if (!error && cyapa->state > CYAPA_STATE_BL_BUSY)
return 0;
cyapa->max_abs_x = ((query_data[21] & 0xf0) << 4) | query_data[22];
cyapa->max_abs_y = ((query_data[21] & 0x0f) << 8) | query_data[23];
cyapa->physical_size_x =
((query_data[24] & 0xf0) << 4) | query_data[25];
cyapa->physical_size_y =
((query_data[24] & 0x0f) << 8) | query_data[26];
msleep(100);
} while (tries--);
return 0;
return (error == -EAGAIN || error == -ETIMEDOUT) ? -ETIMEDOUT : error;
}
/*
......@@ -628,8 +266,10 @@ static int cyapa_get_query_data(struct cyapa *cyapa)
* firmware supported by this driver.
*
* Returns:
* -ENODEV no device
* -EBUSY no device or in bootloader
* -EIO failure while reading from device
* -ETIMEDOUT timeout failure for bus idle or bus no response
* -EAGAIN device is still in bootloader
* if ->state = CYAPA_STATE_BL_IDLE, device has invalid firmware
* -EINVAL device is in operational mode, but not supported by this driver
......@@ -637,122 +277,56 @@ static int cyapa_get_query_data(struct cyapa *cyapa)
*/
static int cyapa_check_is_operational(struct cyapa *cyapa)
{
struct device *dev = &cyapa->client->dev;
static const char unique_str[] = "CYTRA";
int error;
error = cyapa_poll_state(cyapa, 2000);
error = cyapa_poll_state(cyapa, 4000);
if (error)
return error;
switch (cyapa->state) {
case CYAPA_STATE_BL_ACTIVE:
error = cyapa_bl_deactivate(cyapa);
if (error)
return error;
/* Fallthrough state */
case CYAPA_STATE_BL_IDLE:
error = cyapa_bl_exit(cyapa);
if (error)
return error;
/* Fallthrough state */
case CYAPA_STATE_OP:
error = cyapa_get_query_data(cyapa);
if (error)
return error;
/* only support firmware protocol gen3 */
if (cyapa->gen != CYAPA_GEN3) {
dev_err(dev, "unsupported protocol version (%d)",
cyapa->gen);
return -EINVAL;
}
/* only support product ID starting with CYTRA */
if (memcmp(cyapa->product_id, unique_str,
sizeof(unique_str) - 1) != 0) {
dev_err(dev, "unsupported product ID (%s)\n",
cyapa->product_id);
return -EINVAL;
}
return 0;
switch (cyapa->gen) {
case CYAPA_GEN5:
cyapa->ops = &cyapa_gen5_ops;
break;
case CYAPA_GEN3:
cyapa->ops = &cyapa_gen3_ops;
break;
default:
return -EIO;
return -ENODEV;
}
return 0;
}
static irqreturn_t cyapa_irq(int irq, void *dev_id)
{
struct cyapa *cyapa = dev_id;
struct device *dev = &cyapa->client->dev;
struct input_dev *input = cyapa->input;
struct cyapa_reg_data data;
int i;
int ret;
int num_fingers;
error = cyapa->ops->operational_check(cyapa);
if (!error && cyapa_is_operational_mode(cyapa))
cyapa->operational = true;
else
cyapa->operational = false;
if (device_may_wakeup(dev))
pm_wakeup_event(dev, 0);
return error;
}
ret = cyapa_read_block(cyapa, CYAPA_CMD_GROUP_DATA, (u8 *)&data);
if (ret != sizeof(data))
goto out;
if ((data.device_status & OP_STATUS_SRC) != OP_STATUS_SRC ||
(data.device_status & OP_STATUS_DEV) != CYAPA_DEV_NORMAL ||
(data.finger_btn & OP_DATA_VALID) != OP_DATA_VALID) {
goto out;
}
/*
* Returns 0 on device detected, negative errno on no device detected.
* And when the device is detected and opertaional, it will be reset to
* full power active mode automatically.
*/
static int cyapa_detect(struct cyapa *cyapa)
{
struct device *dev = &cyapa->client->dev;
int error;
num_fingers = (data.finger_btn >> 4) & 0x0f;
for (i = 0; i < num_fingers; i++) {
const struct cyapa_touch *touch = &data.touches[i];
/* Note: touch->id range is 1 to 15; slots are 0 to 14. */
int slot = touch->id - 1;
error = cyapa_check_is_operational(cyapa);
if (error) {
if (error != -ETIMEDOUT && error != -ENODEV &&
cyapa_is_bootloader_mode(cyapa)) {
dev_warn(dev, "device detected but not operational\n");
return 0;
}
input_mt_slot(input, slot);
input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
input_report_abs(input, ABS_MT_POSITION_X,
((touch->xy_hi & 0xf0) << 4) | touch->x_lo);
input_report_abs(input, ABS_MT_POSITION_Y,
((touch->xy_hi & 0x0f) << 8) | touch->y_lo);
input_report_abs(input, ABS_MT_PRESSURE, touch->pressure);
dev_err(dev, "no device detected: %d\n", error);
return error;
}
input_mt_sync_frame(input);
if (cyapa->btn_capability & CAPABILITY_LEFT_BTN_MASK)
input_report_key(input, BTN_LEFT,
data.finger_btn & OP_DATA_LEFT_BTN);
if (cyapa->btn_capability & CAPABILITY_MIDDLE_BTN_MASK)
input_report_key(input, BTN_MIDDLE,
data.finger_btn & OP_DATA_MIDDLE_BTN);
if (cyapa->btn_capability & CAPABILITY_RIGHT_BTN_MASK)
input_report_key(input, BTN_RIGHT,
data.finger_btn & OP_DATA_RIGHT_BTN);
input_sync(input);
out:
return IRQ_HANDLED;
}
static u8 cyapa_check_adapter_functionality(struct i2c_client *client)
{
u8 ret = CYAPA_ADAPTER_FUNC_NONE;
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
ret |= CYAPA_ADAPTER_FUNC_I2C;
if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_SMBUS_BLOCK_DATA |
I2C_FUNC_SMBUS_I2C_BLOCK))
ret |= CYAPA_ADAPTER_FUNC_SMBUS;
return ret;
return 0;
}
static int cyapa_open(struct input_dev *input)
......@@ -761,22 +335,57 @@ static int cyapa_open(struct input_dev *input)
struct i2c_client *client = cyapa->client;
int error;
error = cyapa_set_power_mode(cyapa, PWR_MODE_FULL_ACTIVE);
if (error) {
dev_err(&client->dev, "set active power failed: %d\n", error);
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
if (error)
return error;
if (cyapa->operational) {
/*
* though failed to set active power mode,
* but still may be able to work in lower scan rate
* when in operational mode.
*/
error = cyapa->ops->set_power_mode(cyapa,
PWR_MODE_FULL_ACTIVE, 0);
if (error) {
dev_warn(&client->dev,
"set active power failed: %d\n", error);
goto out;
}
} else {
error = cyapa_reinitialize(cyapa);
if (error || !cyapa->operational) {
error = error ? error : -EAGAIN;
goto out;
}
}
enable_irq(client->irq);
return 0;
if (!pm_runtime_enabled(&client->dev)) {
pm_runtime_set_active(&client->dev);
pm_runtime_enable(&client->dev);
}
out:
mutex_unlock(&cyapa->state_sync_lock);
return error;
}
static void cyapa_close(struct input_dev *input)
{
struct cyapa *cyapa = input_get_drvdata(input);
struct i2c_client *client = cyapa->client;
mutex_lock(&cyapa->state_sync_lock);
disable_irq(client->irq);
if (pm_runtime_enabled(&client->dev))
pm_runtime_disable(&client->dev);
pm_runtime_set_suspended(&client->dev);
disable_irq(cyapa->client->irq);
cyapa_set_power_mode(cyapa, PWR_MODE_OFF);
if (cyapa->operational)
cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0);
mutex_unlock(&cyapa->state_sync_lock);
}
static int cyapa_create_input_dev(struct cyapa *cyapa)
......@@ -813,7 +422,28 @@ static int cyapa_create_input_dev(struct cyapa *cyapa)
0);
input_set_abs_params(input, ABS_MT_POSITION_Y, 0, cyapa->max_abs_y, 0,
0);
input_set_abs_params(input, ABS_MT_PRESSURE, 0, 255, 0, 0);
input_set_abs_params(input, ABS_MT_PRESSURE, 0, cyapa->max_z, 0, 0);
if (cyapa->gen > CYAPA_GEN3) {
input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 255, 0, 0);
/*
* Orientation is the angle between the vertical axis and
* the major axis of the contact ellipse.
* The range is -127 to 127.
* the positive direction is clockwise form the vertical axis.
* If the ellipse of contact degenerates into a circle,
* orientation is reported as 0.
*
* Also, for Gen5 trackpad the accurate of this orientation
* value is value + (-30 ~ 30).
*/
input_set_abs_params(input, ABS_MT_ORIENTATION,
-127, 127, 0, 0);
}
if (cyapa->gen >= CYAPA_GEN5) {
input_set_abs_params(input, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
input_set_abs_params(input, ABS_MT_WIDTH_MINOR, 0, 255, 0, 0);
}
input_abs_set_res(input, ABS_MT_POSITION_X,
cyapa->max_abs_x / cyapa->physical_size_x);
......@@ -838,16 +468,720 @@ static int cyapa_create_input_dev(struct cyapa *cyapa)
return error;
}
/* Register the device in input subsystem */
error = input_register_device(input);
if (error) {
dev_err(dev, "failed to register input device: %d\n", error);
return error;
}
cyapa->input = input;
return 0;
}
static int cyapa_probe(struct i2c_client *client,
const struct i2c_device_id *dev_id)
static void cyapa_enable_irq_for_cmd(struct cyapa *cyapa)
{
struct device *dev = &client->dev;
struct input_dev *input = cyapa->input;
if (!input || !input->users) {
/*
* When input is NULL, TP must be in deep sleep mode.
* In this mode, later non-power I2C command will always failed
* if not bring it out of deep sleep mode firstly,
* so must command TP to active mode here.
*/
if (!input || cyapa->operational)
cyapa->ops->set_power_mode(cyapa,
PWR_MODE_FULL_ACTIVE, 0);
/* Gen3 always using polling mode for command. */
if (cyapa->gen >= CYAPA_GEN5)
enable_irq(cyapa->client->irq);
}
}
static void cyapa_disable_irq_for_cmd(struct cyapa *cyapa)
{
struct input_dev *input = cyapa->input;
if (!input || !input->users) {
if (cyapa->gen >= CYAPA_GEN5)
disable_irq(cyapa->client->irq);
if (!input || cyapa->operational)
cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0);
}
}
/*
* cyapa_sleep_time_to_pwr_cmd and cyapa_pwr_cmd_to_sleep_time
*
* These are helper functions that convert to and from integer idle
* times and register settings to write to the PowerMode register.
* The trackpad supports between 20ms to 1000ms scan intervals.
* The time will be increased in increments of 10ms from 20ms to 100ms.
* From 100ms to 1000ms, time will be increased in increments of 20ms.
*
* When Idle_Time < 100, the format to convert Idle_Time to Idle_Command is:
* Idle_Command = Idle Time / 10;
* When Idle_Time >= 100, the format to convert Idle_Time to Idle_Command is:
* Idle_Command = Idle Time / 20 + 5;
*/
u8 cyapa_sleep_time_to_pwr_cmd(u16 sleep_time)
{
u16 encoded_time;
sleep_time = clamp_val(sleep_time, 20, 1000);
encoded_time = sleep_time < 100 ? sleep_time / 10 : sleep_time / 20 + 5;
return (encoded_time << 2) & PWR_MODE_MASK;
}
u16 cyapa_pwr_cmd_to_sleep_time(u8 pwr_mode)
{
u8 encoded_time = pwr_mode >> 2;
return (encoded_time < 10) ? encoded_time * 10
: (encoded_time - 5) * 20;
}
/* 0 on driver initialize and detected successfully, negative on failure. */
static int cyapa_initialize(struct cyapa *cyapa)
{
int error = 0;
cyapa->state = CYAPA_STATE_NO_DEVICE;
cyapa->gen = CYAPA_GEN_UNKNOWN;
mutex_init(&cyapa->state_sync_lock);
/*
* Set to hard code default, they will be updated with trackpad set
* default values after probe and initialized.
*/
cyapa->suspend_power_mode = PWR_MODE_SLEEP;
cyapa->suspend_sleep_time =
cyapa_pwr_cmd_to_sleep_time(cyapa->suspend_power_mode);
/* ops.initialize() is aimed to prepare for module communications. */
error = cyapa_gen3_ops.initialize(cyapa);
if (!error)
error = cyapa_gen5_ops.initialize(cyapa);
if (error)
return error;
error = cyapa_detect(cyapa);
if (error)
return error;
/* Power down the device until we need it. */
if (cyapa->operational)
cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0);
return 0;
}
static int cyapa_reinitialize(struct cyapa *cyapa)
{
struct device *dev = &cyapa->client->dev;
struct input_dev *input = cyapa->input;
int error;
if (pm_runtime_enabled(dev))
pm_runtime_disable(dev);
/* Avoid command failures when TP was in OFF state. */
if (cyapa->operational)
cyapa->ops->set_power_mode(cyapa, PWR_MODE_FULL_ACTIVE, 0);
error = cyapa_detect(cyapa);
if (error)
goto out;
if (!input && cyapa->operational) {
error = cyapa_create_input_dev(cyapa);
if (error) {
dev_err(dev, "create input_dev instance failed: %d\n",
error);
goto out;
}
}
out:
if (!input || !input->users) {
/* Reset to power OFF state to save power when no user open. */
if (cyapa->operational)
cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0);
} else if (!error && cyapa->operational) {
/*
* Make sure only enable runtime PM when device is
* in operational mode and input->users > 0.
*/
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
}
return error;
}
static irqreturn_t cyapa_irq(int irq, void *dev_id)
{
struct cyapa *cyapa = dev_id;
struct device *dev = &cyapa->client->dev;
pm_runtime_get_sync(dev);
if (device_may_wakeup(dev))
pm_wakeup_event(dev, 0);
/* Interrupt event maybe cuased by host command to trackpad device. */
if (cyapa->ops->irq_cmd_handler(cyapa)) {
/*
* Interrupt event maybe from trackpad device input reporting.
*/
if (!cyapa->input) {
/*
* Still in probling or in firware image
* udpating or reading.
*/
cyapa->ops->sort_empty_output_data(cyapa,
NULL, NULL, NULL);
goto out;
}
if (!cyapa->operational || cyapa->ops->irq_handler(cyapa)) {
if (!mutex_trylock(&cyapa->state_sync_lock)) {
cyapa->ops->sort_empty_output_data(cyapa,
NULL, NULL, NULL);
goto out;
}
cyapa_reinitialize(cyapa);
mutex_unlock(&cyapa->state_sync_lock);
}
}
out:
pm_runtime_mark_last_busy(dev);
pm_runtime_put_sync_autosuspend(dev);
return IRQ_HANDLED;
}
/*
**************************************************************
* sysfs interface
**************************************************************
*/
#ifdef CONFIG_PM_SLEEP
static ssize_t cyapa_show_suspend_scanrate(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
u8 pwr_cmd = cyapa->suspend_power_mode;
u16 sleep_time;
int len;
int error;
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
if (error)
return error;
pwr_cmd = cyapa->suspend_power_mode;
sleep_time = cyapa->suspend_sleep_time;
mutex_unlock(&cyapa->state_sync_lock);
switch (pwr_cmd) {
case PWR_MODE_BTN_ONLY:
len = scnprintf(buf, PAGE_SIZE, "%s\n", BTN_ONLY_MODE_NAME);
break;
case PWR_MODE_OFF:
len = scnprintf(buf, PAGE_SIZE, "%s\n", OFF_MODE_NAME);
break;
default:
len = scnprintf(buf, PAGE_SIZE, "%u\n",
cyapa->gen == CYAPA_GEN3 ?
cyapa_pwr_cmd_to_sleep_time(pwr_cmd) :
sleep_time);
break;
}
return len;
}
static ssize_t cyapa_update_suspend_scanrate(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
u16 sleep_time;
int error;
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
if (error)
return error;
if (sysfs_streq(buf, BTN_ONLY_MODE_NAME)) {
cyapa->suspend_power_mode = PWR_MODE_BTN_ONLY;
} else if (sysfs_streq(buf, OFF_MODE_NAME)) {
cyapa->suspend_power_mode = PWR_MODE_OFF;
} else if (!kstrtou16(buf, 10, &sleep_time)) {
cyapa->suspend_sleep_time = max_t(u16, sleep_time, 1000);
cyapa->suspend_power_mode =
cyapa_sleep_time_to_pwr_cmd(cyapa->suspend_sleep_time);
} else {
count = -EINVAL;
}
mutex_unlock(&cyapa->state_sync_lock);
return count;
}
static DEVICE_ATTR(suspend_scanrate_ms, S_IRUGO|S_IWUSR,
cyapa_show_suspend_scanrate,
cyapa_update_suspend_scanrate);
static struct attribute *cyapa_power_wakeup_entries[] = {
&dev_attr_suspend_scanrate_ms.attr,
NULL,
};
static const struct attribute_group cyapa_power_wakeup_group = {
.name = power_group_name,
.attrs = cyapa_power_wakeup_entries,
};
static void cyapa_remove_power_wakeup_group(void *data)
{
struct cyapa *cyapa = data;
sysfs_unmerge_group(&cyapa->client->dev.kobj,
&cyapa_power_wakeup_group);
}
static int cyapa_prepare_wakeup_controls(struct cyapa *cyapa)
{
struct i2c_client *client = cyapa->client;
struct device *dev = &client->dev;
int error;
if (device_can_wakeup(dev)) {
error = sysfs_merge_group(&client->dev.kobj,
&cyapa_power_wakeup_group);
if (error) {
dev_err(dev, "failed to add power wakeup group: %d\n",
error);
return error;
}
error = devm_add_action(dev,
cyapa_remove_power_wakeup_group, cyapa);
if (error) {
cyapa_remove_power_wakeup_group(cyapa);
dev_err(dev, "failed to add power cleanup action: %d\n",
error);
return error;
}
}
return 0;
}
#else
static inline int cyapa_prepare_wakeup_controls(struct cyapa *cyapa)
{
return 0;
}
#endif /* CONFIG_PM_SLEEP */
#ifdef CONFIG_PM
static ssize_t cyapa_show_rt_suspend_scanrate(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
u8 pwr_cmd;
u16 sleep_time;
int error;
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
if (error)
return error;
pwr_cmd = cyapa->runtime_suspend_power_mode;
sleep_time = cyapa->runtime_suspend_sleep_time;
mutex_unlock(&cyapa->state_sync_lock);
return scnprintf(buf, PAGE_SIZE, "%u\n",
cyapa->gen == CYAPA_GEN3 ?
cyapa_pwr_cmd_to_sleep_time(pwr_cmd) :
sleep_time);
}
static ssize_t cyapa_update_rt_suspend_scanrate(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
u16 time;
int error;
if (buf == NULL || count == 0 || kstrtou16(buf, 10, &time)) {
dev_err(dev, "invalid runtime suspend scanrate ms parameter\n");
return -EINVAL;
}
/*
* When the suspend scanrate is changed, pm_runtime_get to resume
* a potentially suspended device, update to the new pwr_cmd
* and then pm_runtime_put to suspend into the new power mode.
*/
pm_runtime_get_sync(dev);
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
if (error)
return error;
cyapa->runtime_suspend_sleep_time = max_t(u16, time, 1000);
cyapa->runtime_suspend_power_mode =
cyapa_sleep_time_to_pwr_cmd(cyapa->runtime_suspend_sleep_time);
mutex_unlock(&cyapa->state_sync_lock);
pm_runtime_put_sync_autosuspend(dev);
return count;
}
static DEVICE_ATTR(runtime_suspend_scanrate_ms, S_IRUGO|S_IWUSR,
cyapa_show_rt_suspend_scanrate,
cyapa_update_rt_suspend_scanrate);
static struct attribute *cyapa_power_runtime_entries[] = {
&dev_attr_runtime_suspend_scanrate_ms.attr,
NULL,
};
static const struct attribute_group cyapa_power_runtime_group = {
.name = power_group_name,
.attrs = cyapa_power_runtime_entries,
};
static void cyapa_remove_power_runtime_group(void *data)
{
struct cyapa *cyapa = data;
sysfs_unmerge_group(&cyapa->client->dev.kobj,
&cyapa_power_runtime_group);
}
static int cyapa_start_runtime(struct cyapa *cyapa)
{
struct device *dev = &cyapa->client->dev;
int error;
cyapa->runtime_suspend_power_mode = PWR_MODE_IDLE;
cyapa->runtime_suspend_sleep_time =
cyapa_pwr_cmd_to_sleep_time(cyapa->runtime_suspend_power_mode);
error = sysfs_merge_group(&dev->kobj, &cyapa_power_runtime_group);
if (error) {
dev_err(dev,
"failed to create power runtime group: %d\n", error);
return error;
}
error = devm_add_action(dev, cyapa_remove_power_runtime_group, cyapa);
if (error) {
cyapa_remove_power_runtime_group(cyapa);
dev_err(dev,
"failed to add power runtime cleanup action: %d\n",
error);
return error;
}
/* runtime is enabled until device is operational and opened. */
pm_runtime_set_suspended(dev);
pm_runtime_use_autosuspend(dev);
pm_runtime_set_autosuspend_delay(dev, AUTOSUSPEND_DELAY);
return 0;
}
#else
static inline int cyapa_start_runtime(struct cyapa *cyapa)
{
return 0;
}
#endif /* CONFIG_PM */
static ssize_t cyapa_show_fm_ver(struct device *dev,
struct device_attribute *attr, char *buf)
{
int error;
struct cyapa *cyapa = dev_get_drvdata(dev);
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
if (error)
return error;
error = scnprintf(buf, PAGE_SIZE, "%d.%d\n", cyapa->fw_maj_ver,
cyapa->fw_min_ver);
mutex_unlock(&cyapa->state_sync_lock);
return error;
}
static ssize_t cyapa_show_product_id(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
int size;
int error;
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
if (error)
return error;
size = scnprintf(buf, PAGE_SIZE, "%s\n", cyapa->product_id);
mutex_unlock(&cyapa->state_sync_lock);
return size;
}
static int cyapa_firmware(struct cyapa *cyapa, const char *fw_name)
{
struct device *dev = &cyapa->client->dev;
const struct firmware *fw;
int error;
error = request_firmware(&fw, fw_name, dev);
if (error) {
dev_err(dev, "Could not load firmware from %s: %d\n",
fw_name, error);
return error;
}
error = cyapa->ops->check_fw(cyapa, fw);
if (error) {
dev_err(dev, "Invalid CYAPA firmware image: %s\n",
fw_name);
goto done;
}
/*
* Resume the potentially suspended device because doing FW
* update on a device not in the FULL mode has a chance to
* fail.
*/
pm_runtime_get_sync(dev);
/* Require IRQ support for firmware update commands. */
cyapa_enable_irq_for_cmd(cyapa);
error = cyapa->ops->bl_enter(cyapa);
if (error) {
dev_err(dev, "bl_enter failed, %d\n", error);
goto err_detect;
}
error = cyapa->ops->bl_activate(cyapa);
if (error) {
dev_err(dev, "bl_activate failed, %d\n", error);
goto err_detect;
}
error = cyapa->ops->bl_initiate(cyapa, fw);
if (error) {
dev_err(dev, "bl_initiate failed, %d\n", error);
goto err_detect;
}
error = cyapa->ops->update_fw(cyapa, fw);
if (error) {
dev_err(dev, "update_fw failed, %d\n", error);
goto err_detect;
}
err_detect:
cyapa_disable_irq_for_cmd(cyapa);
pm_runtime_put_noidle(dev);
done:
release_firmware(fw);
return error;
}
static ssize_t cyapa_update_fw_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
char fw_name[NAME_MAX];
int ret, error;
if (count >= NAME_MAX) {
dev_err(dev, "File name too long\n");
return -EINVAL;
}
memcpy(fw_name, buf, count);
if (fw_name[count - 1] == '\n')
fw_name[count - 1] = '\0';
else
fw_name[count] = '\0';
if (cyapa->input) {
/*
* Force the input device to be registered after the firmware
* image is updated, so if the corresponding parameters updated
* in the new firmware image can taken effect immediately.
*/
input_unregister_device(cyapa->input);
cyapa->input = NULL;
}
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
if (error) {
/*
* Whatever, do reinitialize to try to recover TP state to
* previous state just as it entered fw update entrance.
*/
cyapa_reinitialize(cyapa);
return error;
}
error = cyapa_firmware(cyapa, fw_name);
if (error)
dev_err(dev, "firmware update failed: %d\n", error);
else
dev_dbg(dev, "firmware update successfully done.\n");
/*
* Redetect trackpad device states because firmware update process
* will reset trackpad device into bootloader mode.
*/
ret = cyapa_reinitialize(cyapa);
if (ret) {
dev_err(dev, "failed to redetect after updated: %d\n", ret);
error = error ? error : ret;
}
mutex_unlock(&cyapa->state_sync_lock);
return error ? error : count;
}
static ssize_t cyapa_calibrate_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
int error;
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
if (error)
return error;
if (cyapa->operational) {
cyapa_enable_irq_for_cmd(cyapa);
error = cyapa->ops->calibrate_store(dev, attr, buf, count);
cyapa_disable_irq_for_cmd(cyapa);
} else {
error = -EBUSY; /* Still running in bootloader mode. */
}
mutex_unlock(&cyapa->state_sync_lock);
return error < 0 ? error : count;
}
static ssize_t cyapa_show_baseline(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
ssize_t error;
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
if (error)
return error;
if (cyapa->operational) {
cyapa_enable_irq_for_cmd(cyapa);
error = cyapa->ops->show_baseline(dev, attr, buf);
cyapa_disable_irq_for_cmd(cyapa);
} else {
error = -EBUSY; /* Still running in bootloader mode. */
}
mutex_unlock(&cyapa->state_sync_lock);
return error;
}
static char *cyapa_state_to_string(struct cyapa *cyapa)
{
switch (cyapa->state) {
case CYAPA_STATE_BL_BUSY:
return "bootloader busy";
case CYAPA_STATE_BL_IDLE:
return "bootloader idle";
case CYAPA_STATE_BL_ACTIVE:
return "bootloader active";
case CYAPA_STATE_GEN5_BL:
return "bootloader";
case CYAPA_STATE_OP:
case CYAPA_STATE_GEN5_APP:
return "operational"; /* Normal valid state. */
default:
return "invalid mode";
}
}
static ssize_t cyapa_show_mode(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
int size;
int error;
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
if (error)
return error;
size = scnprintf(buf, PAGE_SIZE, "gen%d %s\n",
cyapa->gen, cyapa_state_to_string(cyapa));
mutex_unlock(&cyapa->state_sync_lock);
return size;
}
static DEVICE_ATTR(firmware_version, S_IRUGO, cyapa_show_fm_ver, NULL);
static DEVICE_ATTR(product_id, S_IRUGO, cyapa_show_product_id, NULL);
static DEVICE_ATTR(update_fw, S_IWUSR, NULL, cyapa_update_fw_store);
static DEVICE_ATTR(baseline, S_IRUGO, cyapa_show_baseline, NULL);
static DEVICE_ATTR(calibrate, S_IWUSR, NULL, cyapa_calibrate_store);
static DEVICE_ATTR(mode, S_IRUGO, cyapa_show_mode, NULL);
static struct attribute *cyapa_sysfs_entries[] = {
&dev_attr_firmware_version.attr,
&dev_attr_product_id.attr,
&dev_attr_update_fw.attr,
&dev_attr_baseline.attr,
&dev_attr_calibrate.attr,
&dev_attr_mode.attr,
NULL,
};
static const struct attribute_group cyapa_sysfs_group = {
.attrs = cyapa_sysfs_entries,
};
static void cyapa_remove_sysfs_group(void *data)
{
struct cyapa *cyapa = data;
sysfs_remove_group(&cyapa->client->dev.kobj, &cyapa_sysfs_group);
}
static int cyapa_probe(struct i2c_client *client,
const struct i2c_device_id *dev_id)
{
struct device *dev = &client->dev;
struct cyapa *cyapa;
u8 adapter_func;
union i2c_smbus_data dummy;
int error;
adapter_func = cyapa_check_adapter_functionality(client);
......@@ -856,38 +1190,54 @@ static int cyapa_probe(struct i2c_client *client,
return -EIO;
}
/* Make sure there is something at this address */
if (i2c_smbus_xfer(client->adapter, client->addr, 0,
I2C_SMBUS_READ, 0, I2C_SMBUS_BYTE, &dummy) < 0)
return -ENODEV;
cyapa = devm_kzalloc(dev, sizeof(struct cyapa), GFP_KERNEL);
if (!cyapa)
return -ENOMEM;
cyapa->gen = CYAPA_GEN3;
/* i2c isn't supported, use smbus */
if (adapter_func == CYAPA_ADAPTER_FUNC_SMBUS)
cyapa->smbus = true;
cyapa->client = client;
i2c_set_clientdata(client, cyapa);
sprintf(cyapa->phys, "i2c-%d-%04x/input0", client->adapter->nr,
client->addr);
/* i2c isn't supported, use smbus */
if (adapter_func == CYAPA_ADAPTER_FUNC_SMBUS)
cyapa->smbus = true;
error = cyapa_initialize(cyapa);
if (error) {
dev_err(dev, "failed to detect and initialize tp device.\n");
return error;
}
cyapa->state = CYAPA_STATE_NO_DEVICE;
error = sysfs_create_group(&client->dev.kobj, &cyapa_sysfs_group);
if (error) {
dev_err(dev, "failed to create sysfs entries: %d\n", error);
return error;
}
error = cyapa_check_is_operational(cyapa);
error = devm_add_action(dev, cyapa_remove_sysfs_group, cyapa);
if (error) {
dev_err(dev, "device not operational, %d\n", error);
cyapa_remove_sysfs_group(cyapa);
dev_err(dev, "failed to add sysfs cleanup action: %d\n", error);
return error;
}
/* Power down the device until we need it */
error = cyapa_set_power_mode(cyapa, PWR_MODE_OFF);
error = cyapa_prepare_wakeup_controls(cyapa);
if (error) {
dev_err(dev, "failed to quiesce the device: %d\n", error);
dev_err(dev, "failed to prepare wakeup controls: %d\n", error);
return error;
}
error = cyapa_create_input_dev(cyapa);
if (error)
error = cyapa_start_runtime(cyapa);
if (error) {
dev_err(dev, "failed to start pm_runtime: %d\n", error);
return error;
}
error = devm_request_threaded_irq(dev, client->irq,
NULL, cyapa_irq,
......@@ -901,11 +1251,18 @@ static int cyapa_probe(struct i2c_client *client,
/* Disable IRQ until the device is opened */
disable_irq(client->irq);
/* Register the device in input subsystem */
error = input_register_device(cyapa->input);
if (error) {
dev_err(dev, "failed to register input device: %d\n", error);
return error;
/*
* Register the device in the input subsystem when it's operational.
* Otherwise, keep in this driver, so it can be be recovered or updated
* through the sysfs mode and update_fw interfaces by user or apps.
*/
if (cyapa->operational) {
error = cyapa_create_input_dev(cyapa);
if (error) {
dev_err(dev, "create input_dev instance failed: %d\n",
error);
return error;
}
}
return 0;
......@@ -915,32 +1272,40 @@ static int __maybe_unused cyapa_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct cyapa *cyapa = i2c_get_clientdata(client);
struct input_dev *input = cyapa->input;
u8 power_mode;
int error;
error = mutex_lock_interruptible(&input->mutex);
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
if (error)
return error;
/*
* Runtime PM is enable only when device is in operational mode and
* users in use, so need check it before disable it to
* avoid unbalance warning.
*/
if (pm_runtime_enabled(dev))
pm_runtime_disable(dev);
disable_irq(client->irq);
/*
* Set trackpad device to idle mode if wakeup is allowed,
* otherwise turn off.
*/
power_mode = device_may_wakeup(dev) ? PWR_MODE_IDLE
: PWR_MODE_OFF;
error = cyapa_set_power_mode(cyapa, power_mode);
if (error)
dev_err(dev, "resume: set power mode to %d failed: %d\n",
power_mode, error);
if (cyapa->operational) {
power_mode = device_may_wakeup(dev) ? cyapa->suspend_power_mode
: PWR_MODE_OFF;
error = cyapa->ops->set_power_mode(cyapa, power_mode,
cyapa->suspend_sleep_time);
if (error)
dev_err(dev, "suspend set power mode failed: %d\n",
error);
}
if (device_may_wakeup(dev))
cyapa->irq_wake = (enable_irq_wake(client->irq) == 0);
mutex_unlock(&input->mutex);
mutex_unlock(&cyapa->state_sync_lock);
return 0;
}
......@@ -948,29 +1313,56 @@ static int __maybe_unused cyapa_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct cyapa *cyapa = i2c_get_clientdata(client);
struct input_dev *input = cyapa->input;
u8 power_mode;
int error;
mutex_lock(&input->mutex);
mutex_lock(&cyapa->state_sync_lock);
if (device_may_wakeup(dev) && cyapa->irq_wake)
if (device_may_wakeup(dev) && cyapa->irq_wake) {
disable_irq_wake(client->irq);
cyapa->irq_wake = false;
}
power_mode = input->users ? PWR_MODE_FULL_ACTIVE : PWR_MODE_OFF;
error = cyapa_set_power_mode(cyapa, PWR_MODE_FULL_ACTIVE);
/* Update device states and runtime PM states. */
error = cyapa_reinitialize(cyapa);
if (error)
dev_warn(dev, "resume: set power mode to %d failed: %d\n",
power_mode, error);
dev_warn(dev, "failed to reinitialize TP device: %d\n", error);
enable_irq(client->irq);
mutex_unlock(&input->mutex);
mutex_unlock(&cyapa->state_sync_lock);
return 0;
}
static int __maybe_unused cyapa_runtime_suspend(struct device *dev)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
int error;
error = cyapa->ops->set_power_mode(cyapa,
cyapa->runtime_suspend_power_mode,
cyapa->runtime_suspend_sleep_time);
if (error)
dev_warn(dev, "runtime suspend failed: %d\n", error);
return 0;
}
static int __maybe_unused cyapa_runtime_resume(struct device *dev)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
int error;
error = cyapa->ops->set_power_mode(cyapa, PWR_MODE_FULL_ACTIVE, 0);
if (error)
dev_warn(dev, "runtime resume failed: %d\n", error);
return 0;
}
static SIMPLE_DEV_PM_OPS(cyapa_pm_ops, cyapa_suspend, cyapa_resume);
static const struct dev_pm_ops cyapa_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(cyapa_suspend, cyapa_resume)
SET_RUNTIME_PM_OPS(cyapa_runtime_suspend, cyapa_runtime_resume, NULL)
};
static const struct i2c_device_id cyapa_id_table[] = {
{ "cyapa", 0 },
......@@ -978,11 +1370,21 @@ static const struct i2c_device_id cyapa_id_table[] = {
};
MODULE_DEVICE_TABLE(i2c, cyapa_id_table);
#ifdef CONFIG_ACPI
static const struct acpi_device_id cyapa_acpi_id[] = {
{ "CYAP0000", 0 }, /* Gen3 trackpad with 0x67 I2C address. */
{ "CYAP0001", 0 }, /* Gen5 trackpad with 0x24 I2C address. */
{ }
};
MODULE_DEVICE_TABLE(acpi, cyapa_acpi_id);
#endif
static struct i2c_driver cyapa_driver = {
.driver = {
.name = "cyapa",
.owner = THIS_MODULE,
.pm = &cyapa_pm_ops,
.acpi_match_table = ACPI_PTR(cyapa_acpi_id),
},
.probe = cyapa_probe,
......
drivers/input/mouse/cyapa.h 0 → 100644
View file @ 718749d5
/*
* Cypress APA trackpad with I2C interface
*
* Author: Dudley Du <dudl@cypress.com>
*
* Copyright (C) 2014 Cypress Semiconductor, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#ifndef _CYAPA_H
#define _CYAPA_H
#include <linux/firmware.h>
/* APA trackpad firmware generation number. */
#define CYAPA_GEN_UNKNOWN 0x00 /* unknown protocol. */
#define CYAPA_GEN3 0x03 /* support MT-protocol B with tracking ID. */
#define CYAPA_GEN5 0x05 /* support TrueTouch GEN5 trackpad device. */
#define CYAPA_NAME "Cypress APA Trackpad (cyapa)"
/*
* Macros for SMBus communication
*/
#define SMBUS_READ 0x01
#define SMBUS_WRITE 0x00
#define SMBUS_ENCODE_IDX(cmd, idx) ((cmd) | (((idx) & 0x03) << 1))
#define SMBUS_ENCODE_RW(cmd, rw) ((cmd) | ((rw) & 0x01))
#define SMBUS_BYTE_BLOCK_CMD_MASK 0x80
#define SMBUS_GROUP_BLOCK_CMD_MASK 0x40
/* Commands for read/write registers of Cypress trackpad */
#define CYAPA_CMD_SOFT_RESET 0x00
#define CYAPA_CMD_POWER_MODE 0x01
#define CYAPA_CMD_DEV_STATUS 0x02
#define CYAPA_CMD_GROUP_DATA 0x03
#define CYAPA_CMD_GROUP_CMD 0x04
#define CYAPA_CMD_GROUP_QUERY 0x05
#define CYAPA_CMD_BL_STATUS 0x06
#define CYAPA_CMD_BL_HEAD 0x07
#define CYAPA_CMD_BL_CMD 0x08
#define CYAPA_CMD_BL_DATA 0x09
#define CYAPA_CMD_BL_ALL 0x0a
#define CYAPA_CMD_BLK_PRODUCT_ID 0x0b
#define CYAPA_CMD_BLK_HEAD 0x0c
#define CYAPA_CMD_MAX_BASELINE 0x0d
#define CYAPA_CMD_MIN_BASELINE 0x0e
#define BL_HEAD_OFFSET 0x00
#define BL_DATA_OFFSET 0x10
#define BL_STATUS_SIZE 3 /* Length of gen3 bootloader status registers */
#define CYAPA_REG_MAP_SIZE 256
/*
* Gen3 Operational Device Status Register
*
* bit 7: Valid interrupt source
* bit 6 - 4: Reserved
* bit 3 - 2: Power status
* bit 1 - 0: Device status
*/
#define REG_OP_STATUS 0x00
#define OP_STATUS_SRC 0x80
#define OP_STATUS_POWER 0x0c
#define OP_STATUS_DEV 0x03
#define OP_STATUS_MASK (OP_STATUS_SRC | OP_STATUS_POWER | OP_STATUS_DEV)
/*
* Operational Finger Count/Button Flags Register
*
* bit 7 - 4: Number of touched finger
* bit 3: Valid data
* bit 2: Middle Physical Button
* bit 1: Right Physical Button
* bit 0: Left physical Button
*/
#define REG_OP_DATA1 0x01
#define OP_DATA_VALID 0x08
#define OP_DATA_MIDDLE_BTN 0x04
#define OP_DATA_RIGHT_BTN 0x02
#define OP_DATA_LEFT_BTN 0x01
#define OP_DATA_BTN_MASK (OP_DATA_MIDDLE_BTN | OP_DATA_RIGHT_BTN | \
OP_DATA_LEFT_BTN)
/*
* Write-only command file register used to issue commands and
* parameters to the bootloader.
* The default value read from it is always 0x00.
*/
#define REG_BL_FILE 0x00
#define BL_FILE 0x00
/*
* Bootloader Status Register
*
* bit 7: Busy
* bit 6 - 5: Reserved
* bit 4: Bootloader running
* bit 3 - 2: Reserved
* bit 1: Watchdog Reset
* bit 0: Checksum valid
*/
#define REG_BL_STATUS 0x01
#define BL_STATUS_REV_6_5 0x60
#define BL_STATUS_BUSY 0x80
#define BL_STATUS_RUNNING 0x10
#define BL_STATUS_REV_3_2 0x0c
#define BL_STATUS_WATCHDOG 0x02
#define BL_STATUS_CSUM_VALID 0x01
#define BL_STATUS_REV_MASK (BL_STATUS_WATCHDOG | BL_STATUS_REV_3_2 | \
BL_STATUS_REV_6_5)
/*
* Bootloader Error Register
*
* bit 7: Invalid
* bit 6: Invalid security key
* bit 5: Bootloading
* bit 4: Command checksum
* bit 3: Flash protection error
* bit 2: Flash checksum error
* bit 1 - 0: Reserved
*/
#define REG_BL_ERROR 0x02
#define BL_ERROR_INVALID 0x80
#define BL_ERROR_INVALID_KEY 0x40
#define BL_ERROR_BOOTLOADING 0x20
#define BL_ERROR_CMD_CSUM 0x10
#define BL_ERROR_FLASH_PROT 0x08
#define BL_ERROR_FLASH_CSUM 0x04
#define BL_ERROR_RESERVED 0x03
#define BL_ERROR_NO_ERR_IDLE 0x00
#define BL_ERROR_NO_ERR_ACTIVE (BL_ERROR_BOOTLOADING)
#define CAPABILITY_BTN_SHIFT 3
#define CAPABILITY_LEFT_BTN_MASK (0x01 << 3)
#define CAPABILITY_RIGHT_BTN_MASK (0x01 << 4)
#define CAPABILITY_MIDDLE_BTN_MASK (0x01 << 5)
#define CAPABILITY_BTN_MASK (CAPABILITY_LEFT_BTN_MASK | \
CAPABILITY_RIGHT_BTN_MASK | \
CAPABILITY_MIDDLE_BTN_MASK)
#define PWR_MODE_MASK 0xfc
#define PWR_MODE_FULL_ACTIVE (0x3f << 2)
#define PWR_MODE_IDLE (0x03 << 2) /* Default rt suspend scanrate: 30ms */
#define PWR_MODE_SLEEP (0x05 << 2) /* Default suspend scanrate: 50ms */
#define PWR_MODE_BTN_ONLY (0x01 << 2)
#define PWR_MODE_OFF (0x00 << 2)
#define PWR_STATUS_MASK 0x0c
#define PWR_STATUS_ACTIVE (0x03 << 2)
#define PWR_STATUS_IDLE (0x02 << 2)
#define PWR_STATUS_BTN_ONLY (0x01 << 2)
#define PWR_STATUS_OFF (0x00 << 2)
#define AUTOSUSPEND_DELAY 2000 /* unit : ms */
#define UNINIT_SLEEP_TIME 0xFFFF
#define UNINIT_PWR_MODE 0xFF
#define BTN_ONLY_MODE_NAME "buttononly"
#define OFF_MODE_NAME "off"
/* The touch.id is used as the MT slot id, thus max MT slot is 15 */
#define CYAPA_MAX_MT_SLOTS 15
struct cyapa;
typedef bool (*cb_sort)(struct cyapa *, u8 *, int);
struct cyapa_dev_ops {
int (*check_fw)(struct cyapa *, const struct firmware *);
int (*bl_enter)(struct cyapa *);
int (*bl_activate)(struct cyapa *);
int (*bl_initiate)(struct cyapa *, const struct firmware *);
int (*update_fw)(struct cyapa *, const struct firmware *);
int (*bl_deactivate)(struct cyapa *);
ssize_t (*show_baseline)(struct device *,
struct device_attribute *, char *);
ssize_t (*calibrate_store)(struct device *,
struct device_attribute *, const char *, size_t);
int (*initialize)(struct cyapa *cyapa);
int (*state_parse)(struct cyapa *cyapa, u8 *reg_status, int len);
int (*operational_check)(struct cyapa *cyapa);
int (*irq_handler)(struct cyapa *);
bool (*irq_cmd_handler)(struct cyapa *);
int (*sort_empty_output_data)(struct cyapa *,
u8 *, int *, cb_sort);
int (*set_power_mode)(struct cyapa *, u8, u16);
};
struct cyapa_gen5_cmd_states {
struct mutex cmd_lock;
struct completion cmd_ready;
atomic_t cmd_issued;
u8 in_progress_cmd;
bool is_irq_mode;
cb_sort resp_sort_func;
u8 *resp_data;
int *resp_len;
u8 irq_cmd_buf[CYAPA_REG_MAP_SIZE];
u8 empty_buf[CYAPA_REG_MAP_SIZE];
};
union cyapa_cmd_states {
struct cyapa_gen5_cmd_states gen5;
};
enum cyapa_state {
CYAPA_STATE_NO_DEVICE,
CYAPA_STATE_BL_BUSY,
CYAPA_STATE_BL_IDLE,
CYAPA_STATE_BL_ACTIVE,
CYAPA_STATE_OP,
CYAPA_STATE_GEN5_BL,
CYAPA_STATE_GEN5_APP,
};
/* The main device structure */
struct cyapa {
enum cyapa_state state;
u8 status[BL_STATUS_SIZE];
bool operational; /* true: ready for data reporting; false: not. */
struct i2c_client *client;
struct input_dev *input;
char phys[32]; /* Device physical location */
bool irq_wake; /* Irq wake is enabled */
bool smbus;
/* power mode settings */
u8 suspend_power_mode;
u16 suspend_sleep_time;
u8 runtime_suspend_power_mode;
u16 runtime_suspend_sleep_time;
u8 dev_pwr_mode;
u16 dev_sleep_time;
/* Read from query data region. */
char product_id[16];
u8 fw_maj_ver; /* Firmware major version. */
u8 fw_min_ver; /* Firmware minor version. */
u8 btn_capability;
u8 gen;
int max_abs_x;
int max_abs_y;
int physical_size_x;
int physical_size_y;
/* Used in ttsp and truetouch based trackpad devices. */
u8 x_origin; /* X Axis Origin: 0 = left side; 1 = rigth side. */
u8 y_origin; /* Y Axis Origin: 0 = top; 1 = bottom. */
int electrodes_x; /* Number of electrodes on the X Axis*/
int electrodes_y; /* Number of electrodes on the Y Axis*/
int electrodes_rx; /* Number of Rx electrodes */
int aligned_electrodes_rx; /* 4 aligned */
int max_z;
/*
* Used to synchronize the access or update the device state.
* And since update firmware and read firmware image process will take
* quite long time, maybe more than 10 seconds, so use mutex_lock
* to sync and wait other interface and detecting are done or ready.
*/
struct mutex state_sync_lock;
const struct cyapa_dev_ops *ops;
union cyapa_cmd_states cmd_states;
};
ssize_t cyapa_i2c_reg_read_block(struct cyapa *cyapa, u8 reg, size_t len,
u8 *values);
ssize_t cyapa_smbus_read_block(struct cyapa *cyapa, u8 cmd, size_t len,
u8 *values);
ssize_t cyapa_read_block(struct cyapa *cyapa, u8 cmd_idx, u8 *values);
int cyapa_poll_state(struct cyapa *cyapa, unsigned int timeout);
u8 cyapa_sleep_time_to_pwr_cmd(u16 sleep_time);
u16 cyapa_pwr_cmd_to_sleep_time(u8 pwr_mode);
extern const char product_id[];
extern const struct cyapa_dev_ops cyapa_gen3_ops;
extern const struct cyapa_dev_ops cyapa_gen5_ops;
#endif
drivers/input/mouse/cyapa_gen3.c 0 → 100644
View file @ 718749d5
/*
* Cypress APA trackpad with I2C interface
*
* Author: Dudley Du <dudl@cypress.com>
* Further cleanup and restructuring by:
* Daniel Kurtz <djkurtz@chromium.org>
* Benson Leung <bleung@chromium.org>
*
* Copyright (C) 2011-2014 Cypress Semiconductor, Inc.
* Copyright (C) 2011-2012 Google, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/unaligned/access_ok.h>
#include "cyapa.h"
#define GEN3_MAX_FINGERS 5
#define GEN3_FINGER_NUM(x) (((x) >> 4) & 0x07)
#define BLK_HEAD_BYTES 32
/* Macro for register map group offset. */
#define PRODUCT_ID_SIZE 16
#define QUERY_DATA_SIZE 27
#define REG_PROTOCOL_GEN_QUERY_OFFSET 20
#define REG_OFFSET_DATA_BASE 0x0000
#define REG_OFFSET_COMMAND_BASE 0x0028
#define REG_OFFSET_QUERY_BASE 0x002a
#define CYAPA_OFFSET_SOFT_RESET REG_OFFSET_COMMAND_BASE
#define OP_RECALIBRATION_MASK 0x80
#define OP_REPORT_BASELINE_MASK 0x40
#define REG_OFFSET_MAX_BASELINE 0x0026
#define REG_OFFSET_MIN_BASELINE 0x0027
#define REG_OFFSET_POWER_MODE (REG_OFFSET_COMMAND_BASE + 1)
#define SET_POWER_MODE_DELAY 10000 /* Unit: us */
#define SET_POWER_MODE_TRIES 5
#define GEN3_BL_CMD_CHECKSUM_SEED 0xff
#define GEN3_BL_CMD_INITIATE_BL 0x38
#define GEN3_BL_CMD_WRITE_BLOCK 0x39
#define GEN3_BL_CMD_VERIFY_BLOCK 0x3a
#define GEN3_BL_CMD_TERMINATE_BL 0x3b
#define GEN3_BL_CMD_LAUNCH_APP 0xa5
/*
* CYAPA trackpad device states.
* Used in register 0x00, bit1-0, DeviceStatus field.
* Other values indicate device is in an abnormal state and must be reset.
*/
#define CYAPA_DEV_NORMAL 0x03
#define CYAPA_DEV_BUSY 0x01
#define CYAPA_FW_BLOCK_SIZE 64
#define CYAPA_FW_READ_SIZE 16
#define CYAPA_FW_HDR_START 0x0780
#define CYAPA_FW_HDR_BLOCK_COUNT 2
#define CYAPA_FW_HDR_BLOCK_START (CYAPA_FW_HDR_START / CYAPA_FW_BLOCK_SIZE)
#define CYAPA_FW_HDR_SIZE (CYAPA_FW_HDR_BLOCK_COUNT * \
CYAPA_FW_BLOCK_SIZE)
#define CYAPA_FW_DATA_START 0x0800
#define CYAPA_FW_DATA_BLOCK_COUNT 480
#define CYAPA_FW_DATA_BLOCK_START (CYAPA_FW_DATA_START / CYAPA_FW_BLOCK_SIZE)
#define CYAPA_FW_DATA_SIZE (CYAPA_FW_DATA_BLOCK_COUNT * \
CYAPA_FW_BLOCK_SIZE)
#define CYAPA_FW_SIZE (CYAPA_FW_HDR_SIZE + CYAPA_FW_DATA_SIZE)
#define CYAPA_CMD_LEN 16
#define GEN3_BL_IDLE_FW_MAJ_VER_OFFSET 0x0b
#define GEN3_BL_IDLE_FW_MIN_VER_OFFSET (GEN3_BL_IDLE_FW_MAJ_VER_OFFSET + 1)
struct cyapa_touch {
/*
* high bits or x/y position value
* bit 7 - 4: high 4 bits of x position value
* bit 3 - 0: high 4 bits of y position value
*/
u8 xy_hi;
u8 x_lo; /* low 8 bits of x position value. */
u8 y_lo; /* low 8 bits of y position value. */
u8 pressure;
/* id range is 1 - 15. It is incremented with every new touch. */
u8 id;
} __packed;
struct cyapa_reg_data {
/*
* bit 0 - 1: device status
* bit 3 - 2: power mode
* bit 6 - 4: reserved
* bit 7: interrupt valid bit
*/
u8 device_status;
/*
* bit 7 - 4: number of fingers currently touching pad
* bit 3: valid data check bit
* bit 2: middle mechanism button state if exists
* bit 1: right mechanism button state if exists
* bit 0: left mechanism button state if exists
*/
u8 finger_btn;
/* CYAPA reports up to 5 touches per packet. */
struct cyapa_touch touches[5];
} __packed;
struct gen3_write_block_cmd {
u8 checksum_seed; /* Always be 0xff */
u8 cmd_code; /* command code: 0x39 */
u8 key[8]; /* 8-byte security key */
__be16 block_num;
u8 block_data[CYAPA_FW_BLOCK_SIZE];
u8 block_checksum; /* Calculated using bytes 12 - 75 */
u8 cmd_checksum; /* Calculated using bytes 0-76 */
} __packed;
static const u8 security_key[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
static const u8 bl_activate[] = { 0x00, 0xff, 0x38, 0x00, 0x01, 0x02, 0x03,
0x04, 0x05, 0x06, 0x07 };
static const u8 bl_deactivate[] = { 0x00, 0xff, 0x3b, 0x00, 0x01, 0x02, 0x03,
0x04, 0x05, 0x06, 0x07 };
static const u8 bl_exit[] = { 0x00, 0xff, 0xa5, 0x00, 0x01, 0x02, 0x03, 0x04,
0x05, 0x06, 0x07 };
/* for byte read/write command */
#define CMD_RESET 0
#define CMD_POWER_MODE 1
#define CMD_DEV_STATUS 2
#define CMD_REPORT_MAX_BASELINE 3
#define CMD_REPORT_MIN_BASELINE 4
#define SMBUS_BYTE_CMD(cmd) (((cmd) & 0x3f) << 1)
#define CYAPA_SMBUS_RESET SMBUS_BYTE_CMD(CMD_RESET)
#define CYAPA_SMBUS_POWER_MODE SMBUS_BYTE_CMD(CMD_POWER_MODE)
#define CYAPA_SMBUS_DEV_STATUS SMBUS_BYTE_CMD(CMD_DEV_STATUS)
#define CYAPA_SMBUS_MAX_BASELINE SMBUS_BYTE_CMD(CMD_REPORT_MAX_BASELINE)
#define CYAPA_SMBUS_MIN_BASELINE SMBUS_BYTE_CMD(CMD_REPORT_MIN_BASELINE)
/* for group registers read/write command */
#define REG_GROUP_DATA 0
#define REG_GROUP_CMD 2
#define REG_GROUP_QUERY 3
#define SMBUS_GROUP_CMD(grp) (0x80 | (((grp) & 0x07) << 3))
#define CYAPA_SMBUS_GROUP_DATA SMBUS_GROUP_CMD(REG_GROUP_DATA)
#define CYAPA_SMBUS_GROUP_CMD SMBUS_GROUP_CMD(REG_GROUP_CMD)
#define CYAPA_SMBUS_GROUP_QUERY SMBUS_GROUP_CMD(REG_GROUP_QUERY)
/* for register block read/write command */
#define CMD_BL_STATUS 0
#define CMD_BL_HEAD 1
#define CMD_BL_CMD 2
#define CMD_BL_DATA 3
#define CMD_BL_ALL 4
#define CMD_BLK_PRODUCT_ID 5
#define CMD_BLK_HEAD 6
#define SMBUS_BLOCK_CMD(cmd) (0xc0 | (((cmd) & 0x1f) << 1))
/* register block read/write command in bootloader mode */
#define CYAPA_SMBUS_BL_STATUS SMBUS_BLOCK_CMD(CMD_BL_STATUS)
#define CYAPA_SMBUS_BL_HEAD SMBUS_BLOCK_CMD(CMD_BL_HEAD)
#define CYAPA_SMBUS_BL_CMD SMBUS_BLOCK_CMD(CMD_BL_CMD)
#define CYAPA_SMBUS_BL_DATA SMBUS_BLOCK_CMD(CMD_BL_DATA)
#define CYAPA_SMBUS_BL_ALL SMBUS_BLOCK_CMD(CMD_BL_ALL)
/* register block read/write command in operational mode */
#define CYAPA_SMBUS_BLK_PRODUCT_ID SMBUS_BLOCK_CMD(CMD_BLK_PRODUCT_ID)
#define CYAPA_SMBUS_BLK_HEAD SMBUS_BLOCK_CMD(CMD_BLK_HEAD)
/* for byte read/write command */
#define CMD_RESET 0
#define CMD_POWER_MODE 1
#define CMD_DEV_STATUS 2
#define CMD_REPORT_MAX_BASELINE 3
#define CMD_REPORT_MIN_BASELINE 4
#define SMBUS_BYTE_CMD(cmd) (((cmd) & 0x3f) << 1)
#define CYAPA_SMBUS_RESET SMBUS_BYTE_CMD(CMD_RESET)
#define CYAPA_SMBUS_POWER_MODE SMBUS_BYTE_CMD(CMD_POWER_MODE)
#define CYAPA_SMBUS_DEV_STATUS SMBUS_BYTE_CMD(CMD_DEV_STATUS)
#define CYAPA_SMBUS_MAX_BASELINE SMBUS_BYTE_CMD(CMD_REPORT_MAX_BASELINE)
#define CYAPA_SMBUS_MIN_BASELINE SMBUS_BYTE_CMD(CMD_REPORT_MIN_BASELINE)
/* for group registers read/write command */
#define REG_GROUP_DATA 0
#define REG_GROUP_CMD 2
#define REG_GROUP_QUERY 3
#define SMBUS_GROUP_CMD(grp) (0x80 | (((grp) & 0x07) << 3))
#define CYAPA_SMBUS_GROUP_DATA SMBUS_GROUP_CMD(REG_GROUP_DATA)
#define CYAPA_SMBUS_GROUP_CMD SMBUS_GROUP_CMD(REG_GROUP_CMD)
#define CYAPA_SMBUS_GROUP_QUERY SMBUS_GROUP_CMD(REG_GROUP_QUERY)
/* for register block read/write command */
#define CMD_BL_STATUS 0
#define CMD_BL_HEAD 1
#define CMD_BL_CMD 2
#define CMD_BL_DATA 3
#define CMD_BL_ALL 4
#define CMD_BLK_PRODUCT_ID 5
#define CMD_BLK_HEAD 6
#define SMBUS_BLOCK_CMD(cmd) (0xc0 | (((cmd) & 0x1f) << 1))
/* register block read/write command in bootloader mode */
#define CYAPA_SMBUS_BL_STATUS SMBUS_BLOCK_CMD(CMD_BL_STATUS)
#define CYAPA_SMBUS_BL_HEAD SMBUS_BLOCK_CMD(CMD_BL_HEAD)
#define CYAPA_SMBUS_BL_CMD SMBUS_BLOCK_CMD(CMD_BL_CMD)
#define CYAPA_SMBUS_BL_DATA SMBUS_BLOCK_CMD(CMD_BL_DATA)
#define CYAPA_SMBUS_BL_ALL SMBUS_BLOCK_CMD(CMD_BL_ALL)
/* register block read/write command in operational mode */
#define CYAPA_SMBUS_BLK_PRODUCT_ID SMBUS_BLOCK_CMD(CMD_BLK_PRODUCT_ID)
#define CYAPA_SMBUS_BLK_HEAD SMBUS_BLOCK_CMD(CMD_BLK_HEAD)
struct cyapa_cmd_len {
u8 cmd;
u8 len;
};
/* maps generic CYAPA_CMD_* code to the I2C equivalent */
static const struct cyapa_cmd_len cyapa_i2c_cmds[] = {
{ CYAPA_OFFSET_SOFT_RESET, 1 }, /* CYAPA_CMD_SOFT_RESET */
{ REG_OFFSET_COMMAND_BASE + 1, 1 }, /* CYAPA_CMD_POWER_MODE */
{ REG_OFFSET_DATA_BASE, 1 }, /* CYAPA_CMD_DEV_STATUS */
{ REG_OFFSET_DATA_BASE, sizeof(struct cyapa_reg_data) },
/* CYAPA_CMD_GROUP_DATA */
{ REG_OFFSET_COMMAND_BASE, 0 }, /* CYAPA_CMD_GROUP_CMD */
{ REG_OFFSET_QUERY_BASE, QUERY_DATA_SIZE }, /* CYAPA_CMD_GROUP_QUERY */
{ BL_HEAD_OFFSET, 3 }, /* CYAPA_CMD_BL_STATUS */
{ BL_HEAD_OFFSET, 16 }, /* CYAPA_CMD_BL_HEAD */
{ BL_HEAD_OFFSET, 16 }, /* CYAPA_CMD_BL_CMD */
{ BL_DATA_OFFSET, 16 }, /* CYAPA_CMD_BL_DATA */
{ BL_HEAD_OFFSET, 32 }, /* CYAPA_CMD_BL_ALL */
{ REG_OFFSET_QUERY_BASE, PRODUCT_ID_SIZE },
/* CYAPA_CMD_BLK_PRODUCT_ID */
{ REG_OFFSET_DATA_BASE, 32 }, /* CYAPA_CMD_BLK_HEAD */
{ REG_OFFSET_MAX_BASELINE, 1 }, /* CYAPA_CMD_MAX_BASELINE */
{ REG_OFFSET_MIN_BASELINE, 1 }, /* CYAPA_CMD_MIN_BASELINE */
};
static const struct cyapa_cmd_len cyapa_smbus_cmds[] = {
{ CYAPA_SMBUS_RESET, 1 }, /* CYAPA_CMD_SOFT_RESET */
{ CYAPA_SMBUS_POWER_MODE, 1 }, /* CYAPA_CMD_POWER_MODE */
{ CYAPA_SMBUS_DEV_STATUS, 1 }, /* CYAPA_CMD_DEV_STATUS */
{ CYAPA_SMBUS_GROUP_DATA, sizeof(struct cyapa_reg_data) },
/* CYAPA_CMD_GROUP_DATA */
{ CYAPA_SMBUS_GROUP_CMD, 2 }, /* CYAPA_CMD_GROUP_CMD */
{ CYAPA_SMBUS_GROUP_QUERY, QUERY_DATA_SIZE },
/* CYAPA_CMD_GROUP_QUERY */
{ CYAPA_SMBUS_BL_STATUS, 3 }, /* CYAPA_CMD_BL_STATUS */
{ CYAPA_SMBUS_BL_HEAD, 16 }, /* CYAPA_CMD_BL_HEAD */
{ CYAPA_SMBUS_BL_CMD, 16 }, /* CYAPA_CMD_BL_CMD */
{ CYAPA_SMBUS_BL_DATA, 16 }, /* CYAPA_CMD_BL_DATA */
{ CYAPA_SMBUS_BL_ALL, 32 }, /* CYAPA_CMD_BL_ALL */
{ CYAPA_SMBUS_BLK_PRODUCT_ID, PRODUCT_ID_SIZE },
/* CYAPA_CMD_BLK_PRODUCT_ID */
{ CYAPA_SMBUS_BLK_HEAD, 16 }, /* CYAPA_CMD_BLK_HEAD */
{ CYAPA_SMBUS_MAX_BASELINE, 1 }, /* CYAPA_CMD_MAX_BASELINE */
{ CYAPA_SMBUS_MIN_BASELINE, 1 }, /* CYAPA_CMD_MIN_BASELINE */
};
/*
* cyapa_smbus_read_block - perform smbus block read command
* @cyapa - private data structure of the driver
* @cmd - the properly encoded smbus command
* @len - expected length of smbus command result
* @values - buffer to store smbus command result
*
* Returns negative errno, else the number of bytes written.
*
* Note:
* In trackpad device, the memory block allocated for I2C register map
* is 256 bytes, so the max read block for I2C bus is 256 bytes.
*/
ssize_t cyapa_smbus_read_block(struct cyapa *cyapa, u8 cmd, size_t len,
u8 *values)
{
ssize_t ret;
u8 index;
u8 smbus_cmd;
u8 *buf;
struct i2c_client *client = cyapa->client;
if (!(SMBUS_BYTE_BLOCK_CMD_MASK & cmd))
return -EINVAL;
if (SMBUS_GROUP_BLOCK_CMD_MASK & cmd) {
/* read specific block registers command. */
smbus_cmd = SMBUS_ENCODE_RW(cmd, SMBUS_READ);
ret = i2c_smbus_read_block_data(client, smbus_cmd, values);
goto out;
}
ret = 0;
for (index = 0; index * I2C_SMBUS_BLOCK_MAX < len; index++) {
smbus_cmd = SMBUS_ENCODE_IDX(cmd, index);
smbus_cmd = SMBUS_ENCODE_RW(smbus_cmd, SMBUS_READ);
buf = values + I2C_SMBUS_BLOCK_MAX * index;
ret = i2c_smbus_read_block_data(client, smbus_cmd, buf);
if (ret < 0)
goto out;
}
out:
return ret > 0 ? len : ret;
}
static s32 cyapa_read_byte(struct cyapa *cyapa, u8 cmd_idx)
{
u8 cmd;
if (cyapa->smbus) {
cmd = cyapa_smbus_cmds[cmd_idx].cmd;
cmd = SMBUS_ENCODE_RW(cmd, SMBUS_READ);
} else {
cmd = cyapa_i2c_cmds[cmd_idx].cmd;
}
return i2c_smbus_read_byte_data(cyapa->client, cmd);
}
static s32 cyapa_write_byte(struct cyapa *cyapa, u8 cmd_idx, u8 value)
{
u8 cmd;
if (cyapa->smbus) {
cmd = cyapa_smbus_cmds[cmd_idx].cmd;
cmd = SMBUS_ENCODE_RW(cmd, SMBUS_WRITE);
} else {
cmd = cyapa_i2c_cmds[cmd_idx].cmd;
}
return i2c_smbus_write_byte_data(cyapa->client, cmd, value);
}
ssize_t cyapa_i2c_reg_read_block(struct cyapa *cyapa, u8 reg, size_t len,
u8 *values)
{
return i2c_smbus_read_i2c_block_data(cyapa->client, reg, len, values);
}
static ssize_t cyapa_i2c_reg_write_block(struct cyapa *cyapa, u8 reg,
size_t len, const u8 *values)
{
return i2c_smbus_write_i2c_block_data(cyapa->client, reg, len, values);
}
ssize_t cyapa_read_block(struct cyapa *cyapa, u8 cmd_idx, u8 *values)
{
u8 cmd;
size_t len;
if (cyapa->smbus) {
cmd = cyapa_smbus_cmds[cmd_idx].cmd;
len = cyapa_smbus_cmds[cmd_idx].len;
return cyapa_smbus_read_block(cyapa, cmd, len, values);
}
cmd = cyapa_i2c_cmds[cmd_idx].cmd;
len = cyapa_i2c_cmds[cmd_idx].len;
return cyapa_i2c_reg_read_block(cyapa, cmd, len, values);
}
/*
* Determine the Gen3 trackpad device's current operating state.
*
*/
static int cyapa_gen3_state_parse(struct cyapa *cyapa, u8 *reg_data, int len)
{
cyapa->state = CYAPA_STATE_NO_DEVICE;
/* Parse based on Gen3 characteristic registers and bits */
if (reg_data[REG_BL_FILE] == BL_FILE &&
reg_data[REG_BL_ERROR] == BL_ERROR_NO_ERR_IDLE &&
(reg_data[REG_BL_STATUS] ==
(BL_STATUS_RUNNING | BL_STATUS_CSUM_VALID) ||
reg_data[REG_BL_STATUS] == BL_STATUS_RUNNING)) {
/*
* Normal state after power on or reset,
* REG_BL_STATUS == 0x11, firmware image checksum is valid.
* REG_BL_STATUS == 0x10, firmware image checksum is invalid.
*/
cyapa->gen = CYAPA_GEN3;
cyapa->state = CYAPA_STATE_BL_IDLE;
} else if (reg_data[REG_BL_FILE] == BL_FILE &&
(reg_data[REG_BL_STATUS] & BL_STATUS_RUNNING) ==
BL_STATUS_RUNNING) {
cyapa->gen = CYAPA_GEN3;
if (reg_data[REG_BL_STATUS] & BL_STATUS_BUSY) {
cyapa->state = CYAPA_STATE_BL_BUSY;
} else {
if ((reg_data[REG_BL_ERROR] & BL_ERROR_BOOTLOADING) ==
BL_ERROR_BOOTLOADING)
cyapa->state = CYAPA_STATE_BL_ACTIVE;
else
cyapa->state = CYAPA_STATE_BL_IDLE;
}
} else if ((reg_data[REG_OP_STATUS] & OP_STATUS_SRC) &&
(reg_data[REG_OP_DATA1] & OP_DATA_VALID)) {
/*
* Normal state when running in operational mode,
* may also not in full power state or
* busying in command process.
*/
if (GEN3_FINGER_NUM(reg_data[REG_OP_DATA1]) <=
GEN3_MAX_FINGERS) {
/* Finger number data is valid. */
cyapa->gen = CYAPA_GEN3;
cyapa->state = CYAPA_STATE_OP;
}
} else if (reg_data[REG_OP_STATUS] == 0x0C &&
reg_data[REG_OP_DATA1] == 0x08) {
/* Op state when first two registers overwritten with 0x00 */
cyapa->gen = CYAPA_GEN3;
cyapa->state = CYAPA_STATE_OP;
} else if (reg_data[REG_BL_STATUS] &
(BL_STATUS_RUNNING | BL_STATUS_BUSY)) {
cyapa->gen = CYAPA_GEN3;
cyapa->state = CYAPA_STATE_BL_BUSY;
}
if (cyapa->gen == CYAPA_GEN3 && (cyapa->state == CYAPA_STATE_OP ||
cyapa->state == CYAPA_STATE_BL_IDLE ||
cyapa->state == CYAPA_STATE_BL_ACTIVE ||
cyapa->state == CYAPA_STATE_BL_BUSY))
return 0;
return -EAGAIN;
}
/*
* Enter bootloader by soft resetting the device.
*
* If device is already in the bootloader, the function just returns.
* Otherwise, reset the device; after reset, device enters bootloader idle
* state immediately.
*
* Returns:
* 0 on success
* -EAGAIN device was reset, but is not now in bootloader idle state
* < 0 if the device never responds within the timeout
*/
static int cyapa_gen3_bl_enter(struct cyapa *cyapa)
{
int error;
int waiting_time;
error = cyapa_poll_state(cyapa, 500);
if (error)
return error;
if (cyapa->state == CYAPA_STATE_BL_IDLE) {
/* Already in BL_IDLE. Skipping reset. */
return 0;
}
if (cyapa->state != CYAPA_STATE_OP)
return -EAGAIN;
cyapa->operational = false;
cyapa->state = CYAPA_STATE_NO_DEVICE;
error = cyapa_write_byte(cyapa, CYAPA_CMD_SOFT_RESET, 0x01);
if (error)
return -EIO;
usleep_range(25000, 50000);
waiting_time = 2000; /* For some shipset, max waiting time is 1~2s. */
do {
error = cyapa_poll_state(cyapa, 500);
if (error) {
if (error == -ETIMEDOUT) {
waiting_time -= 500;
continue;
}
return error;
}
if ((cyapa->state == CYAPA_STATE_BL_IDLE) &&
!(cyapa->status[REG_BL_STATUS] & BL_STATUS_WATCHDOG))
break;
msleep(100);
waiting_time -= 100;
} while (waiting_time > 0);
if ((cyapa->state != CYAPA_STATE_BL_IDLE) ||
(cyapa->status[REG_BL_STATUS] & BL_STATUS_WATCHDOG))
return -EAGAIN;
return 0;
}
static int cyapa_gen3_bl_activate(struct cyapa *cyapa)
{
int error;
error = cyapa_i2c_reg_write_block(cyapa, 0, sizeof(bl_activate),
bl_activate);
if (error)
return error;
/* Wait for bootloader to activate; takes between 2 and 12 seconds */
msleep(2000);
error = cyapa_poll_state(cyapa, 11000);
if (error)
return error;
if (cyapa->state != CYAPA_STATE_BL_ACTIVE)
return -EAGAIN;
return 0;
}
static int cyapa_gen3_bl_deactivate(struct cyapa *cyapa)
{
int error;
error = cyapa_i2c_reg_write_block(cyapa, 0, sizeof(bl_deactivate),
bl_deactivate);
if (error)
return error;
/* Wait for bootloader to switch to idle state; should take < 100ms */
msleep(100);
error = cyapa_poll_state(cyapa, 500);
if (error)
return error;
if (cyapa->state != CYAPA_STATE_BL_IDLE)
return -EAGAIN;
return 0;
}
/*
* Exit bootloader
*
* Send bl_exit command, then wait 50 - 100 ms to let device transition to
* operational mode. If this is the first time the device's firmware is
* running, it can take up to 2 seconds to calibrate its sensors. So, poll
* the device's new state for up to 2 seconds.
*
* Returns:
* -EIO failure while reading from device
* -EAGAIN device is stuck in bootloader, b/c it has invalid firmware
* 0 device is supported and in operational mode
*/
static int cyapa_gen3_bl_exit(struct cyapa *cyapa)
{
int error;
error = cyapa_i2c_reg_write_block(cyapa, 0, sizeof(bl_exit), bl_exit);
if (error)
return error;
/*
* Wait for bootloader to exit, and operation mode to start.
* Normally, this takes at least 50 ms.
*/
usleep_range(50000, 100000);
/*
* In addition, when a device boots for the first time after being
* updated to new firmware, it must first calibrate its sensors, which
* can take up to an additional 2 seconds. If the device power is
* running low, this may take even longer.
*/
error = cyapa_poll_state(cyapa, 4000);
if (error < 0)
return error;
if (cyapa->state != CYAPA_STATE_OP)
return -EAGAIN;
return 0;
}
static u16 cyapa_gen3_csum(const u8 *buf, size_t count)
{
int i;
u16 csum = 0;
for (i = 0; i < count; i++)
csum += buf[i];
return csum;
}
/*
* Verify the integrity of a CYAPA firmware image file.
*
* The firmware image file is 30848 bytes, composed of 482 64-byte blocks.
*
* The first 2 blocks are the firmware header.
* The next 480 blocks are the firmware image.
*
* The first two bytes of the header hold the header checksum, computed by
* summing the other 126 bytes of the header.
* The last two bytes of the header hold the firmware image checksum, computed
* by summing the 30720 bytes of the image modulo 0xffff.
*
* Both checksums are stored little-endian.
*/
static int cyapa_gen3_check_fw(struct cyapa *cyapa, const struct firmware *fw)
{
struct device *dev = &cyapa->client->dev;
u16 csum;
u16 csum_expected;
/* Firmware must match exact 30848 bytes = 482 64-byte blocks. */
if (fw->size != CYAPA_FW_SIZE) {
dev_err(dev, "invalid firmware size = %zu, expected %u.\n",
fw->size, CYAPA_FW_SIZE);
return -EINVAL;
}
/* Verify header block */
csum_expected = (fw->data[0] << 8) | fw->data[1];
csum = cyapa_gen3_csum(&fw->data[2], CYAPA_FW_HDR_SIZE - 2);
if (csum != csum_expected) {
dev_err(dev, "%s %04x, expected: %04x\n",
"invalid firmware header checksum = ",
csum, csum_expected);
return -EINVAL;
}
/* Verify firmware image */
csum_expected = (fw->data[CYAPA_FW_HDR_SIZE - 2] << 8) |
fw->data[CYAPA_FW_HDR_SIZE - 1];
csum = cyapa_gen3_csum(&fw->data[CYAPA_FW_HDR_SIZE],
CYAPA_FW_DATA_SIZE);
if (csum != csum_expected) {
dev_err(dev, "%s %04x, expected: %04x\n",
"invalid firmware header checksum = ",
csum, csum_expected);
return -EINVAL;
}
return 0;
}
/*
* Write a |len| byte long buffer |buf| to the device, by chopping it up into a
* sequence of smaller |CYAPA_CMD_LEN|-length write commands.
*
* The data bytes for a write command are prepended with the 1-byte offset
* of the data relative to the start of |buf|.
*/
static int cyapa_gen3_write_buffer(struct cyapa *cyapa,
const u8 *buf, size_t len)
{
int error;
size_t i;
unsigned char cmd[CYAPA_CMD_LEN + 1];
size_t cmd_len;
for (i = 0; i < len; i += CYAPA_CMD_LEN) {
const u8 *payload = &buf[i];
cmd_len = (len - i >= CYAPA_CMD_LEN) ? CYAPA_CMD_LEN : len - i;
cmd[0] = i;
memcpy(&cmd[1], payload, cmd_len);
error = cyapa_i2c_reg_write_block(cyapa, 0, cmd_len + 1, cmd);
if (error)
return error;
}
return 0;
}
/*
* A firmware block write command writes 64 bytes of data to a single flash
* page in the device. The 78-byte block write command has the format:
* <0xff> <CMD> <Key> <Start> <Data> <Data-Checksum> <CMD Checksum>
*
* <0xff> - every command starts with 0xff
* <CMD> - the write command value is 0x39
* <Key> - write commands include an 8-byte key: { 00 01 02 03 04 05 06 07 }
* <Block> - Memory Block number (address / 64) (16-bit, big-endian)
* <Data> - 64 bytes of firmware image data
* <Data Checksum> - sum of 64 <Data> bytes, modulo 0xff
* <CMD Checksum> - sum of 77 bytes, from 0xff to <Data Checksum>
*
* Each write command is split into 5 i2c write transactions of up to 16 bytes.
* Each transaction starts with an i2c register offset: (00, 10, 20, 30, 40).
*/
static int cyapa_gen3_write_fw_block(struct cyapa *cyapa,
u16 block, const u8 *data)
{
int ret;
struct gen3_write_block_cmd write_block_cmd;
u8 status[BL_STATUS_SIZE];
int tries;
u8 bl_status, bl_error;
/* Set write command and security key bytes. */
write_block_cmd.checksum_seed = GEN3_BL_CMD_CHECKSUM_SEED;
write_block_cmd.cmd_code = GEN3_BL_CMD_WRITE_BLOCK;
memcpy(write_block_cmd.key, security_key, sizeof(security_key));
put_unaligned_be16(block, &write_block_cmd.block_num);
memcpy(write_block_cmd.block_data, data, CYAPA_FW_BLOCK_SIZE);
write_block_cmd.block_checksum = cyapa_gen3_csum(
write_block_cmd.block_data, CYAPA_FW_BLOCK_SIZE);
write_block_cmd.cmd_checksum = cyapa_gen3_csum((u8 *)&write_block_cmd,
sizeof(write_block_cmd) - 1);
ret = cyapa_gen3_write_buffer(cyapa, (u8 *)&write_block_cmd,
sizeof(write_block_cmd));
if (ret)
return ret;
/* Wait for write to finish */
tries = 11; /* Programming for one block can take about 100ms. */
do {
usleep_range(10000, 20000);
/* Check block write command result status. */
ret = cyapa_i2c_reg_read_block(cyapa, BL_HEAD_OFFSET,
BL_STATUS_SIZE, status);
if (ret != BL_STATUS_SIZE)
return (ret < 0) ? ret : -EIO;
} while ((status[REG_BL_STATUS] & BL_STATUS_BUSY) && --tries);
/* Ignore WATCHDOG bit and reserved bits. */
bl_status = status[REG_BL_STATUS] & ~BL_STATUS_REV_MASK;
bl_error = status[REG_BL_ERROR] & ~BL_ERROR_RESERVED;
if (bl_status & BL_STATUS_BUSY)
ret = -ETIMEDOUT;
else if (bl_status != BL_STATUS_RUNNING ||
bl_error != BL_ERROR_BOOTLOADING)
ret = -EIO;
else
ret = 0;
return ret;
}
static int cyapa_gen3_write_blocks(struct cyapa *cyapa,
size_t start_block, size_t block_count,
const u8 *image_data)
{
int error;
int i;
for (i = 0; i < block_count; i++) {
size_t block = start_block + i;
size_t addr = i * CYAPA_FW_BLOCK_SIZE;
const u8 *data = &image_data[addr];
error = cyapa_gen3_write_fw_block(cyapa, block, data);
if (error)
return error;
}
return 0;
}
static int cyapa_gen3_do_fw_update(struct cyapa *cyapa,
const struct firmware *fw)
{
struct device *dev = &cyapa->client->dev;
int error;
/* First write data, starting at byte 128 of fw->data */
error = cyapa_gen3_write_blocks(cyapa,
CYAPA_FW_DATA_BLOCK_START, CYAPA_FW_DATA_BLOCK_COUNT,
&fw->data[CYAPA_FW_HDR_BLOCK_COUNT * CYAPA_FW_BLOCK_SIZE]);
if (error) {
dev_err(dev, "FW update aborted, write image: %d\n", error);
return error;
}
/* Then write checksum */
error = cyapa_gen3_write_blocks(cyapa,
CYAPA_FW_HDR_BLOCK_START, CYAPA_FW_HDR_BLOCK_COUNT,
&fw->data[0]);
if (error) {
dev_err(dev, "FW update aborted, write checksum: %d\n", error);
return error;
}
return 0;
}
static ssize_t cyapa_gen3_do_calibrate(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
int tries;
int ret;
ret = cyapa_read_byte(cyapa, CYAPA_CMD_DEV_STATUS);
if (ret < 0) {
dev_err(dev, "Error reading dev status: %d\n", ret);
goto out;
}
if ((ret & CYAPA_DEV_NORMAL) != CYAPA_DEV_NORMAL) {
dev_warn(dev, "Trackpad device is busy, device state: 0x%02x\n",
ret);
ret = -EAGAIN;
goto out;
}
ret = cyapa_write_byte(cyapa, CYAPA_CMD_SOFT_RESET,
OP_RECALIBRATION_MASK);
if (ret < 0) {
dev_err(dev, "Failed to send calibrate command: %d\n",
ret);
goto out;
}
tries = 20; /* max recalibration timeout 2s. */
do {
/*
* For this recalibration, the max time will not exceed 2s.
* The average time is approximately 500 - 700 ms, and we
* will check the status every 100 - 200ms.
*/
usleep_range(100000, 200000);
ret = cyapa_read_byte(cyapa, CYAPA_CMD_DEV_STATUS);
if (ret < 0) {
dev_err(dev, "Error reading dev status: %d\n",
ret);
goto out;
}
if ((ret & CYAPA_DEV_NORMAL) == CYAPA_DEV_NORMAL)
break;
} while (--tries);
if (tries == 0) {
dev_err(dev, "Failed to calibrate. Timeout.\n");
ret = -ETIMEDOUT;
goto out;
}
dev_dbg(dev, "Calibration successful.\n");
out:
return ret < 0 ? ret : count;
}
static ssize_t cyapa_gen3_show_baseline(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
int max_baseline, min_baseline;
int tries;
int ret;
ret = cyapa_read_byte(cyapa, CYAPA_CMD_DEV_STATUS);
if (ret < 0) {
dev_err(dev, "Error reading dev status. err = %d\n", ret);
goto out;
}
if ((ret & CYAPA_DEV_NORMAL) != CYAPA_DEV_NORMAL) {
dev_warn(dev, "Trackpad device is busy. device state = 0x%x\n",
ret);
ret = -EAGAIN;
goto out;
}
ret = cyapa_write_byte(cyapa, CYAPA_CMD_SOFT_RESET,
OP_REPORT_BASELINE_MASK);
if (ret < 0) {
dev_err(dev, "Failed to send report baseline command. %d\n",
ret);
goto out;
}
tries = 3; /* Try for 30 to 60 ms */
do {
usleep_range(10000, 20000);
ret = cyapa_read_byte(cyapa, CYAPA_CMD_DEV_STATUS);
if (ret < 0) {
dev_err(dev, "Error reading dev status. err = %d\n",
ret);
goto out;
}
if ((ret & CYAPA_DEV_NORMAL) == CYAPA_DEV_NORMAL)
break;
} while (--tries);
if (tries == 0) {
dev_err(dev, "Device timed out going to Normal state.\n");
ret = -ETIMEDOUT;
goto out;
}
ret = cyapa_read_byte(cyapa, CYAPA_CMD_MAX_BASELINE);
if (ret < 0) {
dev_err(dev, "Failed to read max baseline. err = %d\n", ret);
goto out;
}
max_baseline = ret;
ret = cyapa_read_byte(cyapa, CYAPA_CMD_MIN_BASELINE);
if (ret < 0) {
dev_err(dev, "Failed to read min baseline. err = %d\n", ret);
goto out;
}
min_baseline = ret;
dev_dbg(dev, "Baseline report successful. Max: %d Min: %d\n",
max_baseline, min_baseline);
ret = scnprintf(buf, PAGE_SIZE, "%d %d\n", max_baseline, min_baseline);
out:
return ret;
}
/*
* cyapa_get_wait_time_for_pwr_cmd
*
* Compute the amount of time we need to wait after updating the touchpad
* power mode. The touchpad needs to consume the incoming power mode set
* command at the current clock rate.
*/
static u16 cyapa_get_wait_time_for_pwr_cmd(u8 pwr_mode)
{
switch (pwr_mode) {
case PWR_MODE_FULL_ACTIVE: return 20;
case PWR_MODE_BTN_ONLY: return 20;
case PWR_MODE_OFF: return 20;
default: return cyapa_pwr_cmd_to_sleep_time(pwr_mode) + 50;
}
}
/*
* Set device power mode
*
* Write to the field to configure power state. Power states include :
* Full : Max scans and report rate.
* Idle : Report rate set by user specified time.
* ButtonOnly : No scans for fingers. When the button is triggered,
* a slave interrupt is asserted to notify host to wake up.
* Off : Only awake for i2c commands from host. No function for button
* or touch sensors.
*
* The power_mode command should conform to the following :
* Full : 0x3f
* Idle : Configurable from 20 to 1000ms. See note below for
* cyapa_sleep_time_to_pwr_cmd and cyapa_pwr_cmd_to_sleep_time
* ButtonOnly : 0x01
* Off : 0x00
*
* Device power mode can only be set when device is in operational mode.
*/
static int cyapa_gen3_set_power_mode(struct cyapa *cyapa, u8 power_mode,
u16 always_unused)
{
int ret;
u8 power;
int tries;
u16 sleep_time;
always_unused = 0;
if (cyapa->state != CYAPA_STATE_OP)
return 0;
tries = SET_POWER_MODE_TRIES;
while (tries--) {
ret = cyapa_read_byte(cyapa, CYAPA_CMD_POWER_MODE);
if (ret >= 0)
break;
usleep_range(SET_POWER_MODE_DELAY, 2 * SET_POWER_MODE_DELAY);
}
if (ret < 0)
return ret;
/*
* Return early if the power mode to set is the same as the current
* one.
*/
if ((ret & PWR_MODE_MASK) == power_mode)
return 0;
sleep_time = cyapa_get_wait_time_for_pwr_cmd(ret & PWR_MODE_MASK);
power = ret;
power &= ~PWR_MODE_MASK;
power |= power_mode & PWR_MODE_MASK;
tries = SET_POWER_MODE_TRIES;
while (tries--) {
ret = cyapa_write_byte(cyapa, CYAPA_CMD_POWER_MODE, power);
if (!ret)
break;
usleep_range(SET_POWER_MODE_DELAY, 2 * SET_POWER_MODE_DELAY);
}
/*
* Wait for the newly set power command to go in at the previous
* clock speed (scanrate) used by the touchpad firmware. Not
* doing so before issuing the next command may result in errors
* depending on the command's content.
*/
msleep(sleep_time);
return ret;
}
static int cyapa_gen3_get_query_data(struct cyapa *cyapa)
{
u8 query_data[QUERY_DATA_SIZE];
int ret;
if (cyapa->state != CYAPA_STATE_OP)
return -EBUSY;
ret = cyapa_read_block(cyapa, CYAPA_CMD_GROUP_QUERY, query_data);
if (ret != QUERY_DATA_SIZE)
return (ret < 0) ? ret : -EIO;
memcpy(&cyapa->product_id[0], &query_data[0], 5);
cyapa->product_id[5] = '-';
memcpy(&cyapa->product_id[6], &query_data[5], 6);
cyapa->product_id[12] = '-';
memcpy(&cyapa->product_id[13], &query_data[11], 2);
cyapa->product_id[15] = '\0';
cyapa->fw_maj_ver = query_data[15];
cyapa->fw_min_ver = query_data[16];
cyapa->btn_capability = query_data[19] & CAPABILITY_BTN_MASK;
cyapa->gen = query_data[20] & 0x0f;
cyapa->max_abs_x = ((query_data[21] & 0xf0) << 4) | query_data[22];
cyapa->max_abs_y = ((query_data[21] & 0x0f) << 8) | query_data[23];
cyapa->physical_size_x =
((query_data[24] & 0xf0) << 4) | query_data[25];
cyapa->physical_size_y =
((query_data[24] & 0x0f) << 8) | query_data[26];
cyapa->max_z = 255;
return 0;
}
static int cyapa_gen3_bl_query_data(struct cyapa *cyapa)
{
u8 bl_data[CYAPA_CMD_LEN];
int ret;
ret = cyapa_i2c_reg_read_block(cyapa, 0, CYAPA_CMD_LEN, bl_data);
if (ret != CYAPA_CMD_LEN)
return (ret < 0) ? ret : -EIO;
/*
* This value will be updated again when entered application mode.
* If TP failed to enter application mode, this fw version values
* can be used as a reference.
* This firmware version valid when fw image checksum is valid.
*/
if (bl_data[REG_BL_STATUS] ==
(BL_STATUS_RUNNING | BL_STATUS_CSUM_VALID)) {
cyapa->fw_maj_ver = bl_data[GEN3_BL_IDLE_FW_MAJ_VER_OFFSET];
cyapa->fw_min_ver = bl_data[GEN3_BL_IDLE_FW_MIN_VER_OFFSET];
}
return 0;
}
/*
* Check if device is operational.
*
* An operational device is responding, has exited bootloader, and has
* firmware supported by this driver.
*
* Returns:
* -EBUSY no device or in bootloader
* -EIO failure while reading from device
* -EAGAIN device is still in bootloader
* if ->state = CYAPA_STATE_BL_IDLE, device has invalid firmware
* -EINVAL device is in operational mode, but not supported by this driver
* 0 device is supported
*/
static int cyapa_gen3_do_operational_check(struct cyapa *cyapa)
{
struct device *dev = &cyapa->client->dev;
int error;
switch (cyapa->state) {
case CYAPA_STATE_BL_ACTIVE:
error = cyapa_gen3_bl_deactivate(cyapa);
if (error) {
dev_err(dev, "failed to bl_deactivate: %d\n", error);
return error;
}
/* Fallthrough state */
case CYAPA_STATE_BL_IDLE:
/* Try to get firmware version in bootloader mode. */
cyapa_gen3_bl_query_data(cyapa);
error = cyapa_gen3_bl_exit(cyapa);
if (error) {
dev_err(dev, "failed to bl_exit: %d\n", error);
return error;
}
/* Fallthrough state */
case CYAPA_STATE_OP:
/*
* Reading query data before going back to the full mode
* may cause problems, so we set the power mode first here.
*/
error = cyapa_gen3_set_power_mode(cyapa,
PWR_MODE_FULL_ACTIVE, 0);
if (error)
dev_err(dev, "%s: set full power mode failed: %d\n",
__func__, error);
error = cyapa_gen3_get_query_data(cyapa);
if (error < 0)
return error;
/* Only support firmware protocol gen3 */
if (cyapa->gen != CYAPA_GEN3) {
dev_err(dev, "unsupported protocol version (%d)",
cyapa->gen);
return -EINVAL;
}
/* Only support product ID starting with CYTRA */
if (memcmp(cyapa->product_id, product_id,
strlen(product_id)) != 0) {
dev_err(dev, "unsupported product ID (%s)\n",
cyapa->product_id);
return -EINVAL;
}
return 0;
default:
return -EIO;
}
return 0;
}
/*
* Return false, do not continue process
* Return true, continue process.
*/
static bool cyapa_gen3_irq_cmd_handler(struct cyapa *cyapa)
{
/* Not gen3 irq command response, skip for continue. */
if (cyapa->gen != CYAPA_GEN3)
return true;
if (cyapa->operational)
return true;
/*
* Driver in detecting or other interface function processing,
* so, stop cyapa_gen3_irq_handler to continue process to
* avoid unwanted to error detecting and processing.
*
* And also, avoid the periodicly accerted interrupts to be processed
* as touch inputs when gen3 failed to launch into application mode,
* which will cause gen3 stays in bootloader mode.
*/
return false;
}
static int cyapa_gen3_irq_handler(struct cyapa *cyapa)
{
struct input_dev *input = cyapa->input;
struct device *dev = &cyapa->client->dev;
struct cyapa_reg_data data;
int num_fingers;
int ret;
int i;
ret = cyapa_read_block(cyapa, CYAPA_CMD_GROUP_DATA, (u8 *)&data);
if (ret != sizeof(data)) {
dev_err(dev, "failed to read report data, (%d)\n", ret);
return -EINVAL;
}
if ((data.device_status & OP_STATUS_SRC) != OP_STATUS_SRC ||
(data.device_status & OP_STATUS_DEV) != CYAPA_DEV_NORMAL ||
(data.finger_btn & OP_DATA_VALID) != OP_DATA_VALID) {
dev_err(dev, "invalid device state bytes, %02x %02x\n",
data.device_status, data.finger_btn);
return -EINVAL;
}
num_fingers = (data.finger_btn >> 4) & 0x0f;
for (i = 0; i < num_fingers; i++) {
const struct cyapa_touch *touch = &data.touches[i];
/* Note: touch->id range is 1 to 15; slots are 0 to 14. */
int slot = touch->id - 1;
input_mt_slot(input, slot);
input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
input_report_abs(input, ABS_MT_POSITION_X,
((touch->xy_hi & 0xf0) << 4) | touch->x_lo);
input_report_abs(input, ABS_MT_POSITION_Y,
((touch->xy_hi & 0x0f) << 8) | touch->y_lo);
input_report_abs(input, ABS_MT_PRESSURE, touch->pressure);
}
input_mt_sync_frame(input);
if (cyapa->btn_capability & CAPABILITY_LEFT_BTN_MASK)
input_report_key(input, BTN_LEFT,
!!(data.finger_btn & OP_DATA_LEFT_BTN));
if (cyapa->btn_capability & CAPABILITY_MIDDLE_BTN_MASK)
input_report_key(input, BTN_MIDDLE,
!!(data.finger_btn & OP_DATA_MIDDLE_BTN));
if (cyapa->btn_capability & CAPABILITY_RIGHT_BTN_MASK)
input_report_key(input, BTN_RIGHT,
!!(data.finger_btn & OP_DATA_RIGHT_BTN));
input_sync(input);
return 0;
}
static int cyapa_gen3_initialize(struct cyapa *cyapa) { return 0; }
static int cyapa_gen3_bl_initiate(struct cyapa *cyapa,
const struct firmware *fw) { return 0; }
static int cyapa_gen3_empty_output_data(struct cyapa *cyapa,
u8 *buf, int *len, cb_sort func) { return 0; }
const struct cyapa_dev_ops cyapa_gen3_ops = {
.check_fw = cyapa_gen3_check_fw,
.bl_enter = cyapa_gen3_bl_enter,
.bl_activate = cyapa_gen3_bl_activate,
.update_fw = cyapa_gen3_do_fw_update,
.bl_deactivate = cyapa_gen3_bl_deactivate,
.bl_initiate = cyapa_gen3_bl_initiate,
.show_baseline = cyapa_gen3_show_baseline,
.calibrate_store = cyapa_gen3_do_calibrate,
.initialize = cyapa_gen3_initialize,
.state_parse = cyapa_gen3_state_parse,
.operational_check = cyapa_gen3_do_operational_check,
.irq_handler = cyapa_gen3_irq_handler,
.irq_cmd_handler = cyapa_gen3_irq_cmd_handler,
.sort_empty_output_data = cyapa_gen3_empty_output_data,
.set_power_mode = cyapa_gen3_set_power_mode,
};
drivers/input/mouse/cyapa_gen5.c 0 → 100644
View file @ 718749d5
/*
* Cypress APA trackpad with I2C interface
*
* Author: Dudley Du <dudl@cypress.com>
*
* Copyright (C) 2014 Cypress Semiconductor, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/mutex.h>
#include <linux/completion.h>
#include <linux/slab.h>
#include <linux/unaligned/access_ok.h>
#include <linux/crc-itu-t.h>
#include "cyapa.h"
/* Macro of Gen5 */
#define RECORD_EVENT_NONE 0
#define RECORD_EVENT_TOUCHDOWN 1
#define RECORD_EVENT_DISPLACE 2
#define RECORD_EVENT_LIFTOFF 3
#define CYAPA_TSG_FLASH_MAP_BLOCK_SIZE 0x80
#define CYAPA_TSG_IMG_FW_HDR_SIZE 13
#define CYAPA_TSG_FW_ROW_SIZE (CYAPA_TSG_FLASH_MAP_BLOCK_SIZE)
#define CYAPA_TSG_IMG_START_ROW_NUM 0x002e
#define CYAPA_TSG_IMG_END_ROW_NUM 0x01fe
#define CYAPA_TSG_IMG_APP_INTEGRITY_ROW_NUM 0x01ff
#define CYAPA_TSG_IMG_MAX_RECORDS (CYAPA_TSG_IMG_END_ROW_NUM - \
CYAPA_TSG_IMG_START_ROW_NUM + 1 + 1)
#define CYAPA_TSG_IMG_READ_SIZE (CYAPA_TSG_FLASH_MAP_BLOCK_SIZE / 2)
#define CYAPA_TSG_START_OF_APPLICATION 0x1700
#define CYAPA_TSG_APP_INTEGRITY_SIZE 60
#define CYAPA_TSG_FLASH_MAP_METADATA_SIZE 60
#define CYAPA_TSG_BL_KEY_SIZE 8
#define CYAPA_TSG_MAX_CMD_SIZE 256
#define GEN5_BL_CMD_VERIFY_APP_INTEGRITY 0x31
#define GEN5_BL_CMD_GET_BL_INFO 0x38
#define GEN5_BL_CMD_PROGRAM_VERIFY_ROW 0x39
#define GEN5_BL_CMD_LAUNCH_APP 0x3b
#define GEN5_BL_CMD_INITIATE_BL 0x48
#define GEN5_HID_DESCRIPTOR_ADDR 0x0001
#define GEN5_REPORT_DESCRIPTOR_ADDR 0x0002
#define GEN5_INPUT_REPORT_ADDR 0x0003
#define GEN5_OUTPUT_REPORT_ADDR 0x0004
#define GEN5_CMD_DATA_ADDR 0x0006
#define GEN5_TOUCH_REPORT_HEAD_SIZE 7
#define GEN5_TOUCH_REPORT_MAX_SIZE 127
#define GEN5_BTN_REPORT_HEAD_SIZE 6
#define GEN5_BTN_REPORT_MAX_SIZE 14
#define GEN5_WAKEUP_EVENT_SIZE 4
#define GEN5_RAW_DATA_HEAD_SIZE 24
#define GEN5_BL_CMD_REPORT_ID 0x40
#define GEN5_BL_RESP_REPORT_ID 0x30
#define GEN5_APP_CMD_REPORT_ID 0x2f
#define GEN5_APP_RESP_REPORT_ID 0x1f
#define GEN5_APP_DEEP_SLEEP_REPORT_ID 0xf0
#define GEN5_DEEP_SLEEP_RESP_LENGTH 5
#define GEN5_CMD_GET_PARAMETER 0x05
#define GEN5_CMD_SET_PARAMETER 0x06
#define GEN5_PARAMETER_ACT_INTERVL_ID 0x4d
#define GEN5_PARAMETER_ACT_INTERVL_SIZE 1
#define GEN5_PARAMETER_ACT_LFT_INTERVL_ID 0x4f
#define GEN5_PARAMETER_ACT_LFT_INTERVL_SIZE 2
#define GEN5_PARAMETER_LP_INTRVL_ID 0x4c
#define GEN5_PARAMETER_LP_INTRVL_SIZE 2
#define GEN5_PARAMETER_DISABLE_PIP_REPORT 0x08
#define GEN5_POWER_STATE_ACTIVE 0x01
#define GEN5_POWER_STATE_LOOK_FOR_TOUCH 0x02
#define GEN5_POWER_STATE_READY 0x03
#define GEN5_POWER_STATE_IDLE 0x04
#define GEN5_POWER_STATE_BTN_ONLY 0x05
#define GEN5_POWER_STATE_OFF 0x06
#define GEN5_DEEP_SLEEP_STATE_MASK 0x03
#define GEN5_DEEP_SLEEP_STATE_ON 0x00
#define GEN5_DEEP_SLEEP_STATE_OFF 0x01
#define GEN5_DEEP_SLEEP_OPCODE 0x08
#define GEN5_DEEP_SLEEP_OPCODE_MASK 0x0f
#define GEN5_POWER_READY_MAX_INTRVL_TIME 50 /* Unit: ms */
#define GEN5_POWER_IDLE_MAX_INTRVL_TIME 250 /* Unit: ms */
#define GEN5_CMD_REPORT_ID_OFFSET 4
#define GEN5_RESP_REPORT_ID_OFFSET 2
#define GEN5_RESP_RSVD_OFFSET 3
#define GEN5_RESP_RSVD_KEY 0x00
#define GEN5_RESP_BL_SOP_OFFSET 4
#define GEN5_SOP_KEY 0x01 /* Start of Packet */
#define GEN5_EOP_KEY 0x17 /* End of Packet */
#define GEN5_RESP_APP_CMD_OFFSET 4
#define GET_GEN5_CMD_CODE(reg) ((reg) & 0x7f)
#define VALID_CMD_RESP_HEADER(resp, cmd) \
(((resp)[GEN5_RESP_REPORT_ID_OFFSET] == GEN5_APP_RESP_REPORT_ID) && \
((resp)[GEN5_RESP_RSVD_OFFSET] == GEN5_RESP_RSVD_KEY) && \
(GET_GEN5_CMD_CODE((resp)[GEN5_RESP_APP_CMD_OFFSET]) == (cmd)))
#define GEN5_MIN_BL_CMD_LENGTH 13
#define GEN5_MIN_BL_RESP_LENGTH 11
#define GEN5_MIN_APP_CMD_LENGTH 7
#define GEN5_MIN_APP_RESP_LENGTH 5
#define GEN5_UNSUPPORTED_CMD_RESP_LENGTH 6
#define GEN5_RESP_LENGTH_OFFSET 0x00
#define GEN5_RESP_LENGTH_SIZE 2
#define GEN5_HID_DESCRIPTOR_SIZE 32
#define GEN5_BL_HID_REPORT_ID 0xff
#define GEN5_APP_HID_REPORT_ID 0xf7
#define GEN5_BL_MAX_OUTPUT_LENGTH 0x0100
#define GEN5_APP_MAX_OUTPUT_LENGTH 0x00fe
#define GEN5_BL_REPORT_DESCRIPTOR_SIZE 0x1d
#define GEN5_BL_REPORT_DESCRIPTOR_ID 0xfe
#define GEN5_APP_REPORT_DESCRIPTOR_SIZE 0xee
#define GEN5_APP_CONTRACT_REPORT_DESCRIPTOR_SIZE 0xfa
#define GEN5_APP_REPORT_DESCRIPTOR_ID 0xf6
#define GEN5_TOUCH_REPORT_ID 0x01
#define GEN5_BTN_REPORT_ID 0x03
#define GEN5_WAKEUP_EVENT_REPORT_ID 0x04
#define GEN5_OLD_PUSH_BTN_REPORT_ID 0x05
#define GEN5_PUSH_BTN_REPORT_ID 0x06
#define GEN5_CMD_COMPLETE_SUCCESS(status) ((status) == 0x00)
#define GEN5_BL_INITIATE_RESP_LEN 11
#define GEN5_BL_FAIL_EXIT_RESP_LEN 11
#define GEN5_BL_FAIL_EXIT_STATUS_CODE 0x0c
#define GEN5_BL_VERIFY_INTEGRITY_RESP_LEN 12
#define GEN5_BL_INTEGRITY_CHEKC_PASS 0x00
#define GEN5_BL_BLOCK_WRITE_RESP_LEN 11
#define GEN5_BL_READ_APP_INFO_RESP_LEN 31
#define GEN5_CMD_CALIBRATE 0x28
#define CYAPA_SENSING_MODE_MUTUAL_CAP_FINE 0x00
#define CYAPA_SENSING_MODE_SELF_CAP 0x02
#define GEN5_CMD_RETRIEVE_DATA_STRUCTURE 0x24
#define GEN5_RETRIEVE_MUTUAL_PWC_DATA 0x00
#define GEN5_RETRIEVE_SELF_CAP_PWC_DATA 0x01
#define GEN5_RETRIEVE_DATA_ELEMENT_SIZE_MASK 0x07
#define GEN5_CMD_EXECUTE_PANEL_SCAN 0x2a
#define GEN5_CMD_RETRIEVE_PANEL_SCAN 0x2b
#define GEN5_PANEL_SCAN_MUTUAL_RAW_DATA 0x00
#define GEN5_PANEL_SCAN_MUTUAL_BASELINE 0x01
#define GEN5_PANEL_SCAN_MUTUAL_DIFFCOUNT 0x02
#define GEN5_PANEL_SCAN_SELF_RAW_DATA 0x03
#define GEN5_PANEL_SCAN_SELF_BASELINE 0x04
#define GEN5_PANEL_SCAN_SELF_DIFFCOUNT 0x05
/* The offset only valid for reterive PWC and panel scan commands */
#define GEN5_RESP_DATA_STRUCTURE_OFFSET 10
#define GEN5_PWC_DATA_ELEMENT_SIZE_MASK 0x07
#define GEN5_NUMBER_OF_TOUCH_OFFSET 5
#define GEN5_NUMBER_OF_TOUCH_MASK 0x1f
#define GEN5_BUTTONS_OFFSET 5
#define GEN5_BUTTONS_MASK 0x0f
#define GEN5_GET_EVENT_ID(reg) (((reg) >> 5) & 0x03)
#define GEN5_GET_TOUCH_ID(reg) ((reg) & 0x1f)
#define GEN5_PRODUCT_FAMILY_MASK 0xf000
#define GEN5_PRODUCT_FAMILY_TRACKPAD 0x1000
#define TSG_INVALID_CMD 0xff
struct cyapa_gen5_touch_record {
/*
* Bit 7 - 3: reserved
* Bit 2 - 0: touch type;
* 0 : standard finger;
* 1 - 15 : reserved.
*/
u8 touch_type;
/*
* Bit 7: indicates touch liftoff status.
* 0 : touch is currently on the panel.
* 1 : touch record indicates a liftoff.
* Bit 6 - 5: indicates an event associated with this touch instance
* 0 : no event
* 1 : touchdown
* 2 : significant displacement (> active distance)
* 3 : liftoff (record reports last known coordinates)
* Bit 4 - 0: An arbitrary ID tag associated with a finger
* to allow tracking a touch as it moves around the panel.
*/
u8 touch_tip_event_id;
/* Bit 7 - 0 of X-axis coordinate of the touch in pixel. */
u8 x_lo;
/* Bit 15 - 8 of X-axis coordinate of the touch in pixel. */
u8 x_hi;
/* Bit 7 - 0 of Y-axis coordinate of the touch in pixel. */
u8 y_lo;
/* Bit 15 - 8 of Y-axis coordinate of the touch in pixel. */
u8 y_hi;
/* Touch intensity in counts, pressure value. */
u8 z;
/*
* The length of the major axis of the ellipse of contact between
* the finger and the panel (ABS_MT_TOUCH_MAJOR).
*/
u8 major_axis_len;
/*
* The length of the minor axis of the ellipse of contact between
* the finger and the panel (ABS_MT_TOUCH_MINOR).
*/
u8 minor_axis_len;
/*
* The length of the major axis of the approaching tool.
* (ABS_MT_WIDTH_MAJOR)
*/
u8 major_tool_len;
/*
* The length of the minor axis of the approaching tool.
* (ABS_MT_WIDTH_MINOR)
*/
u8 minor_tool_len;
/*
* The angle between the panel vertical axis and
* the major axis of the contact ellipse. This value is an 8-bit
* signed integer. The range is -127 to +127 (corresponding to
* -90 degree and +90 degree respectively).
* The positive direction is clockwise from the vertical axis.
* If the ellipse of contact degenerates into a circle,
* orientation is reported as 0.
*/
u8 orientation;
} __packed;
struct cyapa_gen5_report_data {
u8 report_head[GEN5_TOUCH_REPORT_HEAD_SIZE];
struct cyapa_gen5_touch_record touch_records[10];
} __packed;
struct cyapa_tsg_bin_image_head {
u8 head_size; /* Unit: bytes, including itself. */
u8 ttda_driver_major_version; /* Reserved as 0. */
u8 ttda_driver_minor_version; /* Reserved as 0. */
u8 fw_major_version;
u8 fw_minor_version;
u8 fw_revision_control_number[8];
} __packed;
struct cyapa_tsg_bin_image_data_record {
u8 flash_array_id;
__be16 row_number;
/* The number of bytes of flash data contained in this record. */
__be16 record_len;
/* The flash program data. */
u8 record_data[CYAPA_TSG_FW_ROW_SIZE];
} __packed;
struct cyapa_tsg_bin_image {
struct cyapa_tsg_bin_image_head image_head;
struct cyapa_tsg_bin_image_data_record records[0];
} __packed;
struct gen5_bl_packet_start {
u8 sop; /* Start of packet, must be 01h */
u8 cmd_code;
__le16 data_length; /* Size of data parameter start from data[0] */
} __packed;
struct gen5_bl_packet_end {
__le16 crc;
u8 eop; /* End of packet, must be 17h */
} __packed;
struct gen5_bl_cmd_head {
__le16 addr; /* Output report register address, must be 0004h */
/* Size of packet not including output report register address */
__le16 length;
u8 report_id; /* Bootloader output report id, must be 40h */
u8 rsvd; /* Reserved, must be 0 */
struct gen5_bl_packet_start packet_start;
u8 data[0]; /* Command data variable based on commands */
} __packed;
/* Initiate bootload command data structure. */
struct gen5_bl_initiate_cmd_data {
/* Key must be "A5h 01h 02h 03h FFh FEh FDh 5Ah" */
u8 key[CYAPA_TSG_BL_KEY_SIZE];
u8 metadata_raw_parameter[CYAPA_TSG_FLASH_MAP_METADATA_SIZE];
__le16 metadata_crc;
} __packed;
struct gen5_bl_metadata_row_params {
__le16 size;
__le16 maximum_size;
__le32 app_start;
__le16 app_len;
__le16 app_crc;
__le32 app_entry;
__le32 upgrade_start;
__le16 upgrade_len;
__le16 entry_row_crc;
u8 padding[36]; /* Padding data must be 0 */
__le16 metadata_crc; /* CRC starts at offset of 60 */
} __packed;
/* Bootload program and verify row command data structure */
struct gen5_bl_flash_row_head {
u8 flash_array_id;
__le16 flash_row_id;
u8 flash_data[0];
} __packed;
struct gen5_app_cmd_head {
__le16 addr; /* Output report register address, must be 0004h */
/* Size of packet not including output report register address */
__le16 length;
u8 report_id; /* Application output report id, must be 2Fh */
u8 rsvd; /* Reserved, must be 0 */
/*
* Bit 7: reserved, must be 0.
* Bit 6-0: command code.
*/
u8 cmd_code;
u8 parameter_data[0]; /* Parameter data variable based on cmd_code */
} __packed;
/* Applicaton get/set parameter command data structure */
struct gen5_app_set_parameter_data {
u8 parameter_id;
u8 parameter_size;
__le32 value;
} __packed;
struct gen5_app_get_parameter_data {
u8 parameter_id;
} __packed;
struct gen5_retrieve_panel_scan_data {
__le16 read_offset;
__le16 read_elements;
u8 data_id;
} __packed;
/* Variables to record latest gen5 trackpad power states. */
#define GEN5_DEV_SET_PWR_STATE(cyapa, s) ((cyapa)->dev_pwr_mode = (s))
#define GEN5_DEV_GET_PWR_STATE(cyapa) ((cyapa)->dev_pwr_mode)
#define GEN5_DEV_SET_SLEEP_TIME(cyapa, t) ((cyapa)->dev_sleep_time = (t))
#define GEN5_DEV_GET_SLEEP_TIME(cyapa) ((cyapa)->dev_sleep_time)
#define GEN5_DEV_UNINIT_SLEEP_TIME(cyapa) \
(((cyapa)->dev_sleep_time) == UNINIT_SLEEP_TIME)
static u8 cyapa_gen5_bl_cmd_key[] = { 0xa5, 0x01, 0x02, 0x03,
0xff, 0xfe, 0xfd, 0x5a };
static int cyapa_gen5_initialize(struct cyapa *cyapa)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
init_completion(&gen5_pip->cmd_ready);
atomic_set(&gen5_pip->cmd_issued, 0);
mutex_init(&gen5_pip->cmd_lock);
gen5_pip->resp_sort_func = NULL;
gen5_pip->in_progress_cmd = TSG_INVALID_CMD;
gen5_pip->resp_data = NULL;
gen5_pip->resp_len = NULL;
cyapa->dev_pwr_mode = UNINIT_PWR_MODE;
cyapa->dev_sleep_time = UNINIT_SLEEP_TIME;
return 0;
}
/* Return negative errno, or else the number of bytes read. */
static ssize_t cyapa_i2c_pip_read(struct cyapa *cyapa, u8 *buf, size_t size)
{
int ret;
if (size == 0)
return 0;
if (!buf || size > CYAPA_REG_MAP_SIZE)
return -EINVAL;
ret = i2c_master_recv(cyapa->client, buf, size);
if (ret != size)
return (ret < 0) ? ret : -EIO;
return size;
}
/**
* Return a negative errno code else zero on success.
*/
static ssize_t cyapa_i2c_pip_write(struct cyapa *cyapa, u8 *buf, size_t size)
{
int ret;
if (!buf || !size)
return -EINVAL;
ret = i2c_master_send(cyapa->client, buf, size);
if (ret != size)
return (ret < 0) ? ret : -EIO;
return 0;
}
/**
* This function is aimed to dump all not read data in Gen5 trackpad
* before send any command, otherwise, the interrupt line will be blocked.
*/
static int cyapa_empty_pip_output_data(struct cyapa *cyapa,
u8 *buf, int *len, cb_sort func)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int length;
int report_count;
int empty_count;
int buf_len;
int error;
buf_len = 0;
if (len) {
buf_len = (*len < CYAPA_REG_MAP_SIZE) ?
*len : CYAPA_REG_MAP_SIZE;
*len = 0;
}
report_count = 8; /* max 7 pending data before command response data */
empty_count = 0;
do {
/*
* Depending on testing in cyapa driver, there are max 5 "02 00"
* packets between two valid buffered data report in firmware.
* So in order to dump all buffered data out and
* make interrupt line release for reassert again,
* we must set the empty_count check value bigger than 5 to
* make it work. Otherwise, in some situation,
* the interrupt line may unable to reactive again,
* which will cause trackpad device unable to
* report data any more.
* for example, it may happen in EFT and ESD testing.
*/
if (empty_count > 5)
return 0;
error = cyapa_i2c_pip_read(cyapa, gen5_pip->empty_buf,
GEN5_RESP_LENGTH_SIZE);
if (error < 0)
return error;
length = get_unaligned_le16(gen5_pip->empty_buf);
if (length == GEN5_RESP_LENGTH_SIZE) {
empty_count++;
continue;
} else if (length > CYAPA_REG_MAP_SIZE) {
/* Should not happen */
return -EINVAL;
} else if (length == 0) {
/* Application or bootloader launch data polled out. */
length = GEN5_RESP_LENGTH_SIZE;
if (buf && buf_len && func &&
func(cyapa, gen5_pip->empty_buf, length)) {
length = min(buf_len, length);
memcpy(buf, gen5_pip->empty_buf, length);
*len = length;
/* Response found, success. */
return 0;
}
continue;
}
error = cyapa_i2c_pip_read(cyapa, gen5_pip->empty_buf, length);
if (error < 0)
return error;
report_count--;
empty_count = 0;
length = get_unaligned_le16(gen5_pip->empty_buf);
if (length <= GEN5_RESP_LENGTH_SIZE) {
empty_count++;
} else if (buf && buf_len && func &&
func(cyapa, gen5_pip->empty_buf, length)) {
length = min(buf_len, length);
memcpy(buf, gen5_pip->empty_buf, length);
*len = length;
/* Response found, success. */
return 0;
}
error = -EINVAL;
} while (report_count);
return error;
}
static int cyapa_do_i2c_pip_cmd_irq_sync(
struct cyapa *cyapa,
u8 *cmd, size_t cmd_len,
unsigned long timeout)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int error;
/* Wait for interrupt to set ready completion */
init_completion(&gen5_pip->cmd_ready);
atomic_inc(&gen5_pip->cmd_issued);
error = cyapa_i2c_pip_write(cyapa, cmd, cmd_len);
if (error) {
atomic_dec(&gen5_pip->cmd_issued);
return (error < 0) ? error : -EIO;
}
/* Wait for interrupt to indicate command is completed. */
timeout = wait_for_completion_timeout(&gen5_pip->cmd_ready,
msecs_to_jiffies(timeout));
if (timeout == 0) {
atomic_dec(&gen5_pip->cmd_issued);
return -ETIMEDOUT;
}
return 0;
}
static int cyapa_do_i2c_pip_cmd_polling(
struct cyapa *cyapa,
u8 *cmd, size_t cmd_len,
u8 *resp_data, int *resp_len,
unsigned long timeout,
cb_sort func)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int tries;
int length;
int error;
atomic_inc(&gen5_pip->cmd_issued);
error = cyapa_i2c_pip_write(cyapa, cmd, cmd_len);
if (error) {
atomic_dec(&gen5_pip->cmd_issued);
return error < 0 ? error : -EIO;
}
length = resp_len ? *resp_len : 0;
if (resp_data && resp_len && length != 0 && func) {
tries = timeout / 5;
do {
usleep_range(3000, 5000);
*resp_len = length;
error = cyapa_empty_pip_output_data(cyapa,
resp_data, resp_len, func);
if (error || *resp_len == 0)
continue;
else
break;
} while (--tries > 0);
if ((error || *resp_len == 0) || tries <= 0)
error = error ? error : -ETIMEDOUT;
}
atomic_dec(&gen5_pip->cmd_issued);
return error;
}
static int cyapa_i2c_pip_cmd_irq_sync(
struct cyapa *cyapa,
u8 *cmd, int cmd_len,
u8 *resp_data, int *resp_len,
unsigned long timeout,
cb_sort func,
bool irq_mode)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int error;
if (!cmd || !cmd_len)
return -EINVAL;
/* Commands must be serialized. */
error = mutex_lock_interruptible(&gen5_pip->cmd_lock);
if (error)
return error;
gen5_pip->resp_sort_func = func;
gen5_pip->resp_data = resp_data;
gen5_pip->resp_len = resp_len;
if (cmd_len >= GEN5_MIN_APP_CMD_LENGTH &&
cmd[4] == GEN5_APP_CMD_REPORT_ID) {
/* Application command */
gen5_pip->in_progress_cmd = cmd[6] & 0x7f;
} else if (cmd_len >= GEN5_MIN_BL_CMD_LENGTH &&
cmd[4] == GEN5_BL_CMD_REPORT_ID) {
/* Bootloader command */
gen5_pip->in_progress_cmd = cmd[7];
}
/* Send command data, wait and read output response data's length. */
if (irq_mode) {
gen5_pip->is_irq_mode = true;
error = cyapa_do_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len,
timeout);
if (error == -ETIMEDOUT && resp_data &&
resp_len && *resp_len != 0 && func) {
/*
* For some old version, there was no interrupt for
* the command response data, so need to poll here
* to try to get the response data.
*/
error = cyapa_empty_pip_output_data(cyapa,
resp_data, resp_len, func);
if (error || *resp_len == 0)
error = error ? error : -ETIMEDOUT;
}
} else {
gen5_pip->is_irq_mode = false;
error = cyapa_do_i2c_pip_cmd_polling(cyapa, cmd, cmd_len,
resp_data, resp_len, timeout, func);
}
gen5_pip->resp_sort_func = NULL;
gen5_pip->resp_data = NULL;
gen5_pip->resp_len = NULL;
gen5_pip->in_progress_cmd = TSG_INVALID_CMD;
mutex_unlock(&gen5_pip->cmd_lock);
return error;
}
static bool cyapa_gen5_sort_tsg_pip_bl_resp_data(struct cyapa *cyapa,
u8 *data, int len)
{
if (!data || len < GEN5_MIN_BL_RESP_LENGTH)
return false;
/* Bootloader input report id 30h */
if (data[GEN5_RESP_REPORT_ID_OFFSET] == GEN5_BL_RESP_REPORT_ID &&
data[GEN5_RESP_RSVD_OFFSET] == GEN5_RESP_RSVD_KEY &&
data[GEN5_RESP_BL_SOP_OFFSET] == GEN5_SOP_KEY)
return true;
return false;
}
static bool cyapa_gen5_sort_tsg_pip_app_resp_data(struct cyapa *cyapa,
u8 *data, int len)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int resp_len;
if (!data || len < GEN5_MIN_APP_RESP_LENGTH)
return false;
if (data[GEN5_RESP_REPORT_ID_OFFSET] == GEN5_APP_RESP_REPORT_ID &&
data[GEN5_RESP_RSVD_OFFSET] == GEN5_RESP_RSVD_KEY) {
resp_len = get_unaligned_le16(&data[GEN5_RESP_LENGTH_OFFSET]);
if (GET_GEN5_CMD_CODE(data[GEN5_RESP_APP_CMD_OFFSET]) == 0x00 &&
resp_len == GEN5_UNSUPPORTED_CMD_RESP_LENGTH &&
data[5] == gen5_pip->in_progress_cmd) {
/* Unsupported command code */
return false;
} else if (GET_GEN5_CMD_CODE(data[GEN5_RESP_APP_CMD_OFFSET]) ==
gen5_pip->in_progress_cmd) {
/* Correct command response received */
return true;
}
}
return false;
}
static bool cyapa_gen5_sort_application_launch_data(struct cyapa *cyapa,
u8 *buf, int len)
{
if (buf == NULL || len < GEN5_RESP_LENGTH_SIZE)
return false;
/*
* After reset or power on, trackpad device always sets to 0x00 0x00
* to indicate a reset or power on event.
*/
if (buf[0] == 0 && buf[1] == 0)
return true;
return false;
}
static bool cyapa_gen5_sort_hid_descriptor_data(struct cyapa *cyapa,
u8 *buf, int len)
{
int resp_len;
int max_output_len;
/* Check hid descriptor. */
if (len != GEN5_HID_DESCRIPTOR_SIZE)
return false;
resp_len = get_unaligned_le16(&buf[GEN5_RESP_LENGTH_OFFSET]);
max_output_len = get_unaligned_le16(&buf[16]);
if (resp_len == GEN5_HID_DESCRIPTOR_SIZE) {
if (buf[GEN5_RESP_REPORT_ID_OFFSET] == GEN5_BL_HID_REPORT_ID &&
max_output_len == GEN5_BL_MAX_OUTPUT_LENGTH) {
/* BL mode HID Descriptor */
return true;
} else if ((buf[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_APP_HID_REPORT_ID) &&
max_output_len == GEN5_APP_MAX_OUTPUT_LENGTH) {
/* APP mode HID Descriptor */
return true;
}
}
return false;
}
static bool cyapa_gen5_sort_deep_sleep_data(struct cyapa *cyapa,
u8 *buf, int len)
{
if (len == GEN5_DEEP_SLEEP_RESP_LENGTH &&
buf[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_APP_DEEP_SLEEP_REPORT_ID &&
(buf[4] & GEN5_DEEP_SLEEP_OPCODE_MASK) ==
GEN5_DEEP_SLEEP_OPCODE)
return true;
return false;
}
static int gen5_idle_state_parse(struct cyapa *cyapa)
{
u8 resp_data[GEN5_HID_DESCRIPTOR_SIZE];
int max_output_len;
int length;
u8 cmd[2];
int ret;
int error;
/*
* Dump all buffered data firstly for the situation
* when the trackpad is just power on the cyapa go here.
*/
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
memset(resp_data, 0, sizeof(resp_data));
ret = cyapa_i2c_pip_read(cyapa, resp_data, 3);
if (ret != 3)
return ret < 0 ? ret : -EIO;
length = get_unaligned_le16(&resp_data[GEN5_RESP_LENGTH_OFFSET]);
if (length == GEN5_RESP_LENGTH_SIZE) {
/* Normal state of Gen5 with no data to respose */
cyapa->gen = CYAPA_GEN5;
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
/* Read description from trackpad device */
cmd[0] = 0x01;
cmd[1] = 0x00;
length = GEN5_HID_DESCRIPTOR_SIZE;
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, GEN5_RESP_LENGTH_SIZE,
resp_data, &length,
300,
cyapa_gen5_sort_hid_descriptor_data,
false);
if (error)
return error;
length = get_unaligned_le16(
&resp_data[GEN5_RESP_LENGTH_OFFSET]);
max_output_len = get_unaligned_le16(&resp_data[16]);
if ((length == GEN5_HID_DESCRIPTOR_SIZE ||
length == GEN5_RESP_LENGTH_SIZE) &&
(resp_data[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_BL_HID_REPORT_ID) &&
max_output_len == GEN5_BL_MAX_OUTPUT_LENGTH) {
/* BL mode HID Description read */
cyapa->state = CYAPA_STATE_GEN5_BL;
} else if ((length == GEN5_HID_DESCRIPTOR_SIZE ||
length == GEN5_RESP_LENGTH_SIZE) &&
(resp_data[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_APP_HID_REPORT_ID) &&
max_output_len == GEN5_APP_MAX_OUTPUT_LENGTH) {
/* APP mode HID Description read */
cyapa->state = CYAPA_STATE_GEN5_APP;
} else {
/* Should not happen!!! */
cyapa->state = CYAPA_STATE_NO_DEVICE;
}
}
return 0;
}
static int gen5_hid_description_header_parse(struct cyapa *cyapa, u8 *reg_data)
{
int length;
u8 resp_data[32];
int max_output_len;
int ret;
/* 0x20 0x00 0xF7 is Gen5 Application HID Description Header;
* 0x20 0x00 0xFF is Gen5 Booloader HID Description Header.
*
* Must read HID Description content through out,
* otherwise Gen5 trackpad cannot response next command
* or report any touch or button data.
*/
ret = cyapa_i2c_pip_read(cyapa, resp_data,
GEN5_HID_DESCRIPTOR_SIZE);
if (ret != GEN5_HID_DESCRIPTOR_SIZE)
return ret < 0 ? ret : -EIO;
length = get_unaligned_le16(&resp_data[GEN5_RESP_LENGTH_OFFSET]);
max_output_len = get_unaligned_le16(&resp_data[16]);
if (length == GEN5_RESP_LENGTH_SIZE) {
if (reg_data[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_BL_HID_REPORT_ID) {
/*
* BL mode HID Description has been previously
* read out.
*/
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_BL;
} else {
/*
* APP mode HID Description has been previously
* read out.
*/
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_APP;
}
} else if (length == GEN5_HID_DESCRIPTOR_SIZE &&
resp_data[2] == GEN5_BL_HID_REPORT_ID &&
max_output_len == GEN5_BL_MAX_OUTPUT_LENGTH) {
/* BL mode HID Description read. */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_BL;
} else if (length == GEN5_HID_DESCRIPTOR_SIZE &&
(resp_data[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_APP_HID_REPORT_ID) &&
max_output_len == GEN5_APP_MAX_OUTPUT_LENGTH) {
/* APP mode HID Description read. */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_APP;
} else {
/* Should not happen!!! */
cyapa->state = CYAPA_STATE_NO_DEVICE;
}
return 0;
}
static int gen5_report_data_header_parse(struct cyapa *cyapa, u8 *reg_data)
{
int length;
length = get_unaligned_le16(&reg_data[GEN5_RESP_LENGTH_OFFSET]);
switch (reg_data[GEN5_RESP_REPORT_ID_OFFSET]) {
case GEN5_TOUCH_REPORT_ID:
if (length < GEN5_TOUCH_REPORT_HEAD_SIZE ||
length > GEN5_TOUCH_REPORT_MAX_SIZE)
return -EINVAL;
break;
case GEN5_BTN_REPORT_ID:
case GEN5_OLD_PUSH_BTN_REPORT_ID:
case GEN5_PUSH_BTN_REPORT_ID:
if (length < GEN5_BTN_REPORT_HEAD_SIZE ||
length > GEN5_BTN_REPORT_MAX_SIZE)
return -EINVAL;
break;
case GEN5_WAKEUP_EVENT_REPORT_ID:
if (length != GEN5_WAKEUP_EVENT_SIZE)
return -EINVAL;
break;
default:
return -EINVAL;
}
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_APP;
return 0;
}
static int gen5_cmd_resp_header_parse(struct cyapa *cyapa, u8 *reg_data)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int length;
int ret;
/*
* Must read report data through out,
* otherwise Gen5 trackpad cannot response next command
* or report any touch or button data.
*/
length = get_unaligned_le16(&reg_data[GEN5_RESP_LENGTH_OFFSET]);
ret = cyapa_i2c_pip_read(cyapa, gen5_pip->empty_buf, length);
if (ret != length)
return ret < 0 ? ret : -EIO;
if (length == GEN5_RESP_LENGTH_SIZE) {
/* Previous command has read the data through out. */
if (reg_data[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_BL_RESP_REPORT_ID) {
/* Gen5 BL command response data detected */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_BL;
} else {
/* Gen5 APP command response data detected */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_APP;
}
} else if ((gen5_pip->empty_buf[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_BL_RESP_REPORT_ID) &&
(gen5_pip->empty_buf[GEN5_RESP_RSVD_OFFSET] ==
GEN5_RESP_RSVD_KEY) &&
(gen5_pip->empty_buf[GEN5_RESP_BL_SOP_OFFSET] ==
GEN5_SOP_KEY) &&
(gen5_pip->empty_buf[length - 1] ==
GEN5_EOP_KEY)) {
/* Gen5 BL command response data detected */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_BL;
} else if (gen5_pip->empty_buf[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_APP_RESP_REPORT_ID &&
gen5_pip->empty_buf[GEN5_RESP_RSVD_OFFSET] ==
GEN5_RESP_RSVD_KEY) {
/* Gen5 APP command response data detected */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_APP;
} else {
/* Should not happen!!! */
cyapa->state = CYAPA_STATE_NO_DEVICE;
}
return 0;
}
static int cyapa_gen5_state_parse(struct cyapa *cyapa, u8 *reg_data, int len)
{
int length;
if (!reg_data || len < 3)
return -EINVAL;
cyapa->state = CYAPA_STATE_NO_DEVICE;
/* Parse based on Gen5 characteristic registers and bits */
length = get_unaligned_le16(&reg_data[GEN5_RESP_LENGTH_OFFSET]);
if (length == 0 || length == GEN5_RESP_LENGTH_SIZE) {
gen5_idle_state_parse(cyapa);
} else if (length == GEN5_HID_DESCRIPTOR_SIZE &&
(reg_data[2] == GEN5_BL_HID_REPORT_ID ||
reg_data[2] == GEN5_APP_HID_REPORT_ID)) {
gen5_hid_description_header_parse(cyapa, reg_data);
} else if ((length == GEN5_APP_REPORT_DESCRIPTOR_SIZE ||
length == GEN5_APP_CONTRACT_REPORT_DESCRIPTOR_SIZE) &&
reg_data[2] == GEN5_APP_REPORT_DESCRIPTOR_ID) {
/* 0xEE 0x00 0xF6 is Gen5 APP report description header. */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_APP;
} else if (length == GEN5_BL_REPORT_DESCRIPTOR_SIZE &&
reg_data[2] == GEN5_BL_REPORT_DESCRIPTOR_ID) {
/* 0x1D 0x00 0xFE is Gen5 BL report descriptior header. */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_BL;
} else if (reg_data[2] == GEN5_TOUCH_REPORT_ID ||
reg_data[2] == GEN5_BTN_REPORT_ID ||
reg_data[2] == GEN5_OLD_PUSH_BTN_REPORT_ID ||
reg_data[2] == GEN5_PUSH_BTN_REPORT_ID ||
reg_data[2] == GEN5_WAKEUP_EVENT_REPORT_ID) {
gen5_report_data_header_parse(cyapa, reg_data);
} else if (reg_data[2] == GEN5_BL_RESP_REPORT_ID ||
reg_data[2] == GEN5_APP_RESP_REPORT_ID) {
gen5_cmd_resp_header_parse(cyapa, reg_data);
}
if (cyapa->gen == CYAPA_GEN5) {
/*
* Must read the content (e.g.: report description and so on)
* from trackpad device throughout. Otherwise,
* Gen5 trackpad cannot response to next command or
* report any touch or button data later.
*/
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
if (cyapa->state == CYAPA_STATE_GEN5_APP ||
cyapa->state == CYAPA_STATE_GEN5_BL)
return 0;
}
return -EAGAIN;
}
static int cyapa_gen5_bl_initiate(struct cyapa *cyapa,
const struct firmware *fw)
{
struct cyapa_tsg_bin_image *image;
struct gen5_bl_cmd_head *bl_cmd_head;
struct gen5_bl_packet_start *bl_packet_start;
struct gen5_bl_initiate_cmd_data *cmd_data;
struct gen5_bl_packet_end *bl_packet_end;
u8 cmd[CYAPA_TSG_MAX_CMD_SIZE];
int cmd_len;
u16 cmd_data_len;
u16 cmd_crc = 0;
u16 meta_data_crc = 0;
u8 resp_data[11];
int resp_len;
int records_num;
u8 *data;
int error;
/* Try to dump all buffered report data before any send command. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE);
bl_cmd_head = (struct gen5_bl_cmd_head *)cmd;
cmd_data_len = CYAPA_TSG_BL_KEY_SIZE + CYAPA_TSG_FLASH_MAP_BLOCK_SIZE;
cmd_len = sizeof(struct gen5_bl_cmd_head) + cmd_data_len +
sizeof(struct gen5_bl_packet_end);
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &bl_cmd_head->addr);
put_unaligned_le16(cmd_len - 2, &bl_cmd_head->length);
bl_cmd_head->report_id = GEN5_BL_CMD_REPORT_ID;
bl_packet_start = &bl_cmd_head->packet_start;
bl_packet_start->sop = GEN5_SOP_KEY;
bl_packet_start->cmd_code = GEN5_BL_CMD_INITIATE_BL;
/* 8 key bytes and 128 bytes block size */
put_unaligned_le16(cmd_data_len, &bl_packet_start->data_length);
cmd_data = (struct gen5_bl_initiate_cmd_data *)bl_cmd_head->data;
memcpy(cmd_data->key, cyapa_gen5_bl_cmd_key, CYAPA_TSG_BL_KEY_SIZE);
/* Copy 60 bytes Meta Data Row Parameters */
image = (struct cyapa_tsg_bin_image *)fw->data;
records_num = (fw->size - sizeof(struct cyapa_tsg_bin_image_head)) /
sizeof(struct cyapa_tsg_bin_image_data_record);
/* APP_INTEGRITY row is always the last row block */
data = image->records[records_num - 1].record_data;
memcpy(cmd_data->metadata_raw_parameter, data,
CYAPA_TSG_FLASH_MAP_METADATA_SIZE);
meta_data_crc = crc_itu_t(0xffff, cmd_data->metadata_raw_parameter,
CYAPA_TSG_FLASH_MAP_METADATA_SIZE);
put_unaligned_le16(meta_data_crc, &cmd_data->metadata_crc);
bl_packet_end = (struct gen5_bl_packet_end *)(bl_cmd_head->data +
cmd_data_len);
cmd_crc = crc_itu_t(0xffff, (u8 *)bl_packet_start,
sizeof(struct gen5_bl_packet_start) + cmd_data_len);
put_unaligned_le16(cmd_crc, &bl_packet_end->crc);
bl_packet_end->eop = GEN5_EOP_KEY;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, cmd_len,
resp_data, &resp_len, 12000,
cyapa_gen5_sort_tsg_pip_bl_resp_data, true);
if (error || resp_len != GEN5_BL_INITIATE_RESP_LEN ||
resp_data[2] != GEN5_BL_RESP_REPORT_ID ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
return error ? error : -EAGAIN;
return 0;
}
static bool cyapa_gen5_sort_bl_exit_data(struct cyapa *cyapa, u8 *buf, int len)
{
if (buf == NULL || len < GEN5_RESP_LENGTH_SIZE)
return false;
if (buf[0] == 0 && buf[1] == 0)
return true;
/* Exit bootloader failed for some reason. */
if (len == GEN5_BL_FAIL_EXIT_RESP_LEN &&
buf[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_BL_RESP_REPORT_ID &&
buf[GEN5_RESP_RSVD_OFFSET] == GEN5_RESP_RSVD_KEY &&
buf[GEN5_RESP_BL_SOP_OFFSET] == GEN5_SOP_KEY &&
buf[10] == GEN5_EOP_KEY)
return true;
return false;
}
static int cyapa_gen5_bl_exit(struct cyapa *cyapa)
{
u8 bl_gen5_bl_exit[] = { 0x04, 0x00,
0x0B, 0x00, 0x40, 0x00, 0x01, 0x3b, 0x00, 0x00,
0x20, 0xc7, 0x17
};
u8 resp_data[11];
int resp_len;
int error;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
bl_gen5_bl_exit, sizeof(bl_gen5_bl_exit),
resp_data, &resp_len,
5000, cyapa_gen5_sort_bl_exit_data, false);
if (error)
return error;
if (resp_len == GEN5_BL_FAIL_EXIT_RESP_LEN ||
resp_data[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_BL_RESP_REPORT_ID)
return -EAGAIN;
if (resp_data[0] == 0x00 && resp_data[1] == 0x00)
return 0;
return -ENODEV;
}
static int cyapa_gen5_bl_enter(struct cyapa *cyapa)
{
u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2F, 0x00, 0x01 };
u8 resp_data[2];
int resp_len;
int error;
error = cyapa_poll_state(cyapa, 500);
if (error < 0)
return error;
if (cyapa->gen != CYAPA_GEN5)
return -EINVAL;
/* Already in Gen5 BL. Skipping exit. */
if (cyapa->state == CYAPA_STATE_GEN5_BL)
return 0;
if (cyapa->state != CYAPA_STATE_GEN5_APP)
return -EAGAIN;
/* Try to dump all buffered report data before any send command. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
/*
* Send bootloader enter command to trackpad device,
* after enter bootloader, the response data is two bytes of 0x00 0x00.
*/
resp_len = sizeof(resp_data);
memset(resp_data, 0, resp_len);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
5000, cyapa_gen5_sort_application_launch_data,
true);
if (error || resp_data[0] != 0x00 || resp_data[1] != 0x00)
return error < 0 ? error : -EAGAIN;
cyapa->operational = false;
cyapa->state = CYAPA_STATE_GEN5_BL;
return 0;
}
static int cyapa_gen5_check_fw(struct cyapa *cyapa, const struct firmware *fw)
{
struct device *dev = &cyapa->client->dev;
const struct cyapa_tsg_bin_image *image = (const void *)fw->data;
const struct cyapa_tsg_bin_image_data_record *app_integrity;
const struct gen5_bl_metadata_row_params *metadata;
size_t flash_records_count;
u32 fw_app_start, fw_upgrade_start;
u16 fw_app_len, fw_upgrade_len;
u16 app_crc;
u16 app_integrity_crc;
int record_index;
int i;
flash_records_count = (fw->size -
sizeof(struct cyapa_tsg_bin_image_head)) /
sizeof(struct cyapa_tsg_bin_image_data_record);
/*
* APP_INTEGRITY row is always the last row block,
* and the row id must be 0x01ff.
*/
app_integrity = &image->records[flash_records_count - 1];
if (app_integrity->flash_array_id != 0x00 ||
get_unaligned_be16(&app_integrity->row_number) != 0x01ff) {
dev_err(dev, "%s: invalid app_integrity data.\n", __func__);
return -EINVAL;
}
metadata = (const void *)app_integrity->record_data;
/* Verify app_integrity crc */
app_integrity_crc = crc_itu_t(0xffff, app_integrity->record_data,
CYAPA_TSG_APP_INTEGRITY_SIZE);
if (app_integrity_crc != get_unaligned_le16(&metadata->metadata_crc)) {
dev_err(dev, "%s: invalid app_integrity crc.\n", __func__);
return -EINVAL;
}
fw_app_start = get_unaligned_le32(&metadata->app_start);
fw_app_len = get_unaligned_le16(&metadata->app_len);
fw_upgrade_start = get_unaligned_le32(&metadata->upgrade_start);
fw_upgrade_len = get_unaligned_le16(&metadata->upgrade_len);
if (fw_app_start % CYAPA_TSG_FW_ROW_SIZE ||
fw_app_len % CYAPA_TSG_FW_ROW_SIZE ||
fw_upgrade_start % CYAPA_TSG_FW_ROW_SIZE ||
fw_upgrade_len % CYAPA_TSG_FW_ROW_SIZE) {
dev_err(dev, "%s: invalid image alignment.\n", __func__);
return -EINVAL;
}
/*
* Verify application image CRC
*/
record_index = fw_app_start / CYAPA_TSG_FW_ROW_SIZE -
CYAPA_TSG_IMG_START_ROW_NUM;
app_crc = 0xffffU;
for (i = 0; i < fw_app_len / CYAPA_TSG_FW_ROW_SIZE; i++) {
const u8 *data = image->records[record_index + i].record_data;
app_crc = crc_itu_t(app_crc, data, CYAPA_TSG_FW_ROW_SIZE);
}
if (app_crc != get_unaligned_le16(&metadata->app_crc)) {
dev_err(dev, "%s: invalid firmware app crc check.\n", __func__);
return -EINVAL;
}
return 0;
}
static int cyapa_gen5_write_fw_block(struct cyapa *cyapa,
struct cyapa_tsg_bin_image_data_record *flash_record)
{
struct gen5_bl_cmd_head *bl_cmd_head;
struct gen5_bl_packet_start *bl_packet_start;
struct gen5_bl_flash_row_head *flash_row_head;
struct gen5_bl_packet_end *bl_packet_end;
u8 cmd[CYAPA_TSG_MAX_CMD_SIZE];
u16 cmd_len;
u8 flash_array_id;
u16 flash_row_id;
u16 record_len;
u8 *record_data;
u16 data_len;
u16 crc;
u8 resp_data[11];
int resp_len;
int error;
flash_array_id = flash_record->flash_array_id;
flash_row_id = get_unaligned_be16(&flash_record->row_number);
record_len = get_unaligned_be16(&flash_record->record_len);
record_data = flash_record->record_data;
memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE);
bl_cmd_head = (struct gen5_bl_cmd_head *)cmd;
bl_packet_start = &bl_cmd_head->packet_start;
cmd_len = sizeof(struct gen5_bl_cmd_head) +
sizeof(struct gen5_bl_flash_row_head) +
CYAPA_TSG_FLASH_MAP_BLOCK_SIZE +
sizeof(struct gen5_bl_packet_end);
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &bl_cmd_head->addr);
/* Don't include 2 bytes register address */
put_unaligned_le16(cmd_len - 2, &bl_cmd_head->length);
bl_cmd_head->report_id = GEN5_BL_CMD_REPORT_ID;
bl_packet_start->sop = GEN5_SOP_KEY;
bl_packet_start->cmd_code = GEN5_BL_CMD_PROGRAM_VERIFY_ROW;
/* 1 (Flash Array ID) + 2 (Flash Row ID) + 128 (flash data) */
data_len = sizeof(struct gen5_bl_flash_row_head) + record_len;
put_unaligned_le16(data_len, &bl_packet_start->data_length);
flash_row_head = (struct gen5_bl_flash_row_head *)bl_cmd_head->data;
flash_row_head->flash_array_id = flash_array_id;
put_unaligned_le16(flash_row_id, &flash_row_head->flash_row_id);
memcpy(flash_row_head->flash_data, record_data, record_len);
bl_packet_end = (struct gen5_bl_packet_end *)(bl_cmd_head->data +
data_len);
crc = crc_itu_t(0xffff, (u8 *)bl_packet_start,
sizeof(struct gen5_bl_packet_start) + data_len);
put_unaligned_le16(crc, &bl_packet_end->crc);
bl_packet_end->eop = GEN5_EOP_KEY;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len,
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_bl_resp_data, true);
if (error || resp_len != GEN5_BL_BLOCK_WRITE_RESP_LEN ||
resp_data[2] != GEN5_BL_RESP_REPORT_ID ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
return error < 0 ? error : -EAGAIN;
return 0;
}
static int cyapa_gen5_do_fw_update(struct cyapa *cyapa,
const struct firmware *fw)
{
struct device *dev = &cyapa->client->dev;
struct cyapa_tsg_bin_image_data_record *flash_record;
struct cyapa_tsg_bin_image *image =
(struct cyapa_tsg_bin_image *)fw->data;
int flash_records_count;
int i;
int error;
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
flash_records_count =
(fw->size - sizeof(struct cyapa_tsg_bin_image_head)) /
sizeof(struct cyapa_tsg_bin_image_data_record);
/*
* The last flash row 0x01ff has been written through bl_initiate
* command, so DO NOT write flash 0x01ff to trackpad device.
*/
for (i = 0; i < (flash_records_count - 1); i++) {
flash_record = &image->records[i];
error = cyapa_gen5_write_fw_block(cyapa, flash_record);
if (error) {
dev_err(dev, "%s: Gen5 FW update aborted: %d\n",
__func__, error);
return error;
}
}
return 0;
}
static int cyapa_gen5_change_power_state(struct cyapa *cyapa, u8 power_state)
{
u8 cmd[8] = { 0x04, 0x00, 0x06, 0x00, 0x2f, 0x00, 0x08, 0x01 };
u8 resp_data[6];
int resp_len;
int error;
cmd[7] = power_state;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, false);
if (error || !VALID_CMD_RESP_HEADER(resp_data, 0x08) ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
return error < 0 ? error : -EINVAL;
return 0;
}
static int cyapa_gen5_set_interval_time(struct cyapa *cyapa,
u8 parameter_id, u16 interval_time)
{
struct gen5_app_cmd_head *app_cmd_head;
struct gen5_app_set_parameter_data *parameter_data;
u8 cmd[CYAPA_TSG_MAX_CMD_SIZE];
int cmd_len;
u8 resp_data[7];
int resp_len;
u8 parameter_size;
int error;
memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE);
app_cmd_head = (struct gen5_app_cmd_head *)cmd;
parameter_data = (struct gen5_app_set_parameter_data *)
app_cmd_head->parameter_data;
cmd_len = sizeof(struct gen5_app_cmd_head) +
sizeof(struct gen5_app_set_parameter_data);
switch (parameter_id) {
case GEN5_PARAMETER_ACT_INTERVL_ID:
parameter_size = GEN5_PARAMETER_ACT_INTERVL_SIZE;
break;
case GEN5_PARAMETER_ACT_LFT_INTERVL_ID:
parameter_size = GEN5_PARAMETER_ACT_LFT_INTERVL_SIZE;
break;
case GEN5_PARAMETER_LP_INTRVL_ID:
parameter_size = GEN5_PARAMETER_LP_INTRVL_SIZE;
break;
default:
return -EINVAL;
}
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
/*
* Don't include unused parameter value bytes and
* 2 bytes register address.
*/
put_unaligned_le16(cmd_len - (4 - parameter_size) - 2,
&app_cmd_head->length);
app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = GEN5_CMD_SET_PARAMETER;
parameter_data->parameter_id = parameter_id;
parameter_data->parameter_size = parameter_size;
put_unaligned_le32((u32)interval_time, &parameter_data->value);
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len,
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, false);
if (error || resp_data[5] != parameter_id ||
resp_data[6] != parameter_size ||
!VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_SET_PARAMETER))
return error < 0 ? error : -EINVAL;
return 0;
}
static int cyapa_gen5_get_interval_time(struct cyapa *cyapa,
u8 parameter_id, u16 *interval_time)
{
struct gen5_app_cmd_head *app_cmd_head;
struct gen5_app_get_parameter_data *parameter_data;
u8 cmd[CYAPA_TSG_MAX_CMD_SIZE];
int cmd_len;
u8 resp_data[11];
int resp_len;
u8 parameter_size;
u16 mask, i;
int error;
memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE);
app_cmd_head = (struct gen5_app_cmd_head *)cmd;
parameter_data = (struct gen5_app_get_parameter_data *)
app_cmd_head->parameter_data;
cmd_len = sizeof(struct gen5_app_cmd_head) +
sizeof(struct gen5_app_get_parameter_data);
*interval_time = 0;
switch (parameter_id) {
case GEN5_PARAMETER_ACT_INTERVL_ID:
parameter_size = GEN5_PARAMETER_ACT_INTERVL_SIZE;
break;
case GEN5_PARAMETER_ACT_LFT_INTERVL_ID:
parameter_size = GEN5_PARAMETER_ACT_LFT_INTERVL_SIZE;
break;
case GEN5_PARAMETER_LP_INTRVL_ID:
parameter_size = GEN5_PARAMETER_LP_INTRVL_SIZE;
break;
default:
return -EINVAL;
}
put_unaligned_le16(GEN5_HID_DESCRIPTOR_ADDR, &app_cmd_head->addr);
/* Don't include 2 bytes register address */
put_unaligned_le16(cmd_len - 2, &app_cmd_head->length);
app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = GEN5_CMD_GET_PARAMETER;
parameter_data->parameter_id = parameter_id;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len,
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, false);
if (error || resp_data[5] != parameter_id || resp_data[6] == 0 ||
!VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_GET_PARAMETER))
return error < 0 ? error : -EINVAL;
mask = 0;
for (i = 0; i < parameter_size; i++)
mask |= (0xff << (i * 8));
*interval_time = get_unaligned_le16(&resp_data[7]) & mask;
return 0;
}
static int cyapa_gen5_disable_pip_report(struct cyapa *cyapa)
{
struct gen5_app_cmd_head *app_cmd_head;
u8 cmd[10];
u8 resp_data[7];
int resp_len;
int error;
memset(cmd, 0, sizeof(cmd));
app_cmd_head = (struct gen5_app_cmd_head *)cmd;
put_unaligned_le16(GEN5_HID_DESCRIPTOR_ADDR, &app_cmd_head->addr);
put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length);
app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = GEN5_CMD_SET_PARAMETER;
app_cmd_head->parameter_data[0] = GEN5_PARAMETER_DISABLE_PIP_REPORT;
app_cmd_head->parameter_data[1] = 0x01;
app_cmd_head->parameter_data[2] = 0x01;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, false);
if (error || resp_data[5] != GEN5_PARAMETER_DISABLE_PIP_REPORT ||
!VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_SET_PARAMETER) ||
resp_data[6] != 0x01)
return error < 0 ? error : -EINVAL;
return 0;
}
static int cyapa_gen5_deep_sleep(struct cyapa *cyapa, u8 state)
{
u8 cmd[] = { 0x05, 0x00, 0x00, 0x08};
u8 resp_data[5];
int resp_len;
int error;
cmd[2] = state & GEN5_DEEP_SLEEP_STATE_MASK;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_deep_sleep_data, false);
if (error || ((resp_data[3] & GEN5_DEEP_SLEEP_STATE_MASK) != state))
return -EINVAL;
return 0;
}
static int cyapa_gen5_set_power_mode(struct cyapa *cyapa,
u8 power_mode, u16 sleep_time)
{
struct device *dev = &cyapa->client->dev;
u8 power_state;
int error;
if (cyapa->state != CYAPA_STATE_GEN5_APP)
return 0;
/* Dump all the report data before do power mode commmands. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
if (GEN5_DEV_GET_PWR_STATE(cyapa) == UNINIT_PWR_MODE) {
/*
* Assume TP in deep sleep mode when driver is loaded,
* avoid driver unload and reload command IO issue caused by TP
* has been set into deep sleep mode when unloading.
*/
GEN5_DEV_SET_PWR_STATE(cyapa, PWR_MODE_OFF);
}
if (GEN5_DEV_UNINIT_SLEEP_TIME(cyapa) &&
GEN5_DEV_GET_PWR_STATE(cyapa) != PWR_MODE_OFF)
if (cyapa_gen5_get_interval_time(cyapa,
GEN5_PARAMETER_LP_INTRVL_ID,
&cyapa->dev_sleep_time) != 0)
GEN5_DEV_SET_SLEEP_TIME(cyapa, UNINIT_SLEEP_TIME);
if (GEN5_DEV_GET_PWR_STATE(cyapa) == power_mode) {
if (power_mode == PWR_MODE_OFF ||
power_mode == PWR_MODE_FULL_ACTIVE ||
power_mode == PWR_MODE_BTN_ONLY ||
GEN5_DEV_GET_SLEEP_TIME(cyapa) == sleep_time) {
/* Has in correct power mode state, early return. */
return 0;
}
}
if (power_mode == PWR_MODE_OFF) {
error = cyapa_gen5_deep_sleep(cyapa, GEN5_DEEP_SLEEP_STATE_OFF);
if (error) {
dev_err(dev, "enter deep sleep fail: %d\n", error);
return error;
}
GEN5_DEV_SET_PWR_STATE(cyapa, PWR_MODE_OFF);
return 0;
}
/*
* When trackpad in power off mode, it cannot change to other power
* state directly, must be wake up from sleep firstly, then
* continue to do next power sate change.
*/
if (GEN5_DEV_GET_PWR_STATE(cyapa) == PWR_MODE_OFF) {
error = cyapa_gen5_deep_sleep(cyapa, GEN5_DEEP_SLEEP_STATE_ON);
if (error) {
dev_err(dev, "deep sleep wake fail: %d\n", error);
return error;
}
}
if (power_mode == PWR_MODE_FULL_ACTIVE) {
error = cyapa_gen5_change_power_state(cyapa,
GEN5_POWER_STATE_ACTIVE);
if (error) {
dev_err(dev, "change to active fail: %d\n", error);
return error;
}
GEN5_DEV_SET_PWR_STATE(cyapa, PWR_MODE_FULL_ACTIVE);
} else if (power_mode == PWR_MODE_BTN_ONLY) {
error = cyapa_gen5_change_power_state(cyapa,
GEN5_POWER_STATE_BTN_ONLY);
if (error) {
dev_err(dev, "fail to button only mode: %d\n", error);
return error;
}
GEN5_DEV_SET_PWR_STATE(cyapa, PWR_MODE_BTN_ONLY);
} else {
/*
* Continue to change power mode even failed to set
* interval time, it won't affect the power mode change.
* except the sleep interval time is not correct.
*/
if (GEN5_DEV_UNINIT_SLEEP_TIME(cyapa) ||
sleep_time != GEN5_DEV_GET_SLEEP_TIME(cyapa))
if (cyapa_gen5_set_interval_time(cyapa,
GEN5_PARAMETER_LP_INTRVL_ID,
sleep_time) == 0)
GEN5_DEV_SET_SLEEP_TIME(cyapa, sleep_time);
if (sleep_time <= GEN5_POWER_READY_MAX_INTRVL_TIME)
power_state = GEN5_POWER_STATE_READY;
else
power_state = GEN5_POWER_STATE_IDLE;
error = cyapa_gen5_change_power_state(cyapa, power_state);
if (error) {
dev_err(dev, "set power state to 0x%02x failed: %d\n",
power_state, error);
return error;
}
/*
* Disable pip report for a little time, firmware will
* re-enable it automatically. It's used to fix the issue
* that trackpad unable to report signal to wake system up
* in the special situation that system is in suspending, and
* at the same time, user touch trackpad to wake system up.
* This function can avoid the data to be buffured when system
* is suspending which may cause interrput line unable to be
* asserted again.
*/
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
cyapa_gen5_disable_pip_report(cyapa);
GEN5_DEV_SET_PWR_STATE(cyapa,
cyapa_sleep_time_to_pwr_cmd(sleep_time));
}
return 0;
}
static int cyapa_gen5_resume_scanning(struct cyapa *cyapa)
{
u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x04 };
u8 resp_data[6];
int resp_len;
int error;
/* Try to dump all buffered data before doing command. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
if (error || !VALID_CMD_RESP_HEADER(resp_data, 0x04))
return -EINVAL;
/* Try to dump all buffered data when resuming scanning. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
return 0;
}
static int cyapa_gen5_suspend_scanning(struct cyapa *cyapa)
{
u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x03 };
u8 resp_data[6];
int resp_len;
int error;
/* Try to dump all buffered data before doing command. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
if (error || !VALID_CMD_RESP_HEADER(resp_data, 0x03))
return -EINVAL;
/* Try to dump all buffered data when suspending scanning. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
return 0;
}
static int cyapa_gen5_calibrate_pwcs(struct cyapa *cyapa,
u8 calibrate_sensing_mode_type)
{
struct gen5_app_cmd_head *app_cmd_head;
u8 cmd[8];
u8 resp_data[6];
int resp_len;
int error;
/* Try to dump all buffered data before doing command. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
memset(cmd, 0, sizeof(cmd));
app_cmd_head = (struct gen5_app_cmd_head *)cmd;
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length);
app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = GEN5_CMD_CALIBRATE;
app_cmd_head->parameter_data[0] = calibrate_sensing_mode_type;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
5000, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
if (error || !VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_CALIBRATE) ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
return error < 0 ? error : -EAGAIN;
return 0;
}
static ssize_t cyapa_gen5_do_calibrate(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
int error, calibrate_error;
/* 1. Suspend Scanning*/
error = cyapa_gen5_suspend_scanning(cyapa);
if (error)
return error;
/* 2. Do mutual capacitance fine calibrate. */
calibrate_error = cyapa_gen5_calibrate_pwcs(cyapa,
CYAPA_SENSING_MODE_MUTUAL_CAP_FINE);
if (calibrate_error)
goto resume_scanning;
/* 3. Do self capacitance calibrate. */
calibrate_error = cyapa_gen5_calibrate_pwcs(cyapa,
CYAPA_SENSING_MODE_SELF_CAP);
if (calibrate_error)
goto resume_scanning;
resume_scanning:
/* 4. Resume Scanning*/
error = cyapa_gen5_resume_scanning(cyapa);
if (error || calibrate_error)
return error ? error : calibrate_error;
return count;
}
static s32 twos_complement_to_s32(s32 value, int num_bits)
{
if (value >> (num_bits - 1))
value |= -1 << num_bits;
return value;
}
static s32 cyapa_parse_structure_data(u8 data_format, u8 *buf, int buf_len)
{
int data_size;
bool big_endian;
bool unsigned_type;
s32 value;
data_size = (data_format & 0x07);
big_endian = ((data_format & 0x10) == 0x00);
unsigned_type = ((data_format & 0x20) == 0x00);
if (buf_len < data_size)
return 0;
switch (data_size) {
case 1:
value = buf[0];
break;
case 2:
if (big_endian)
value = get_unaligned_be16(buf);
else
value = get_unaligned_le16(buf);
break;
case 4:
if (big_endian)
value = get_unaligned_be32(buf);
else
value = get_unaligned_le32(buf);
break;
default:
/* Should not happen, just as default case here. */
value = 0;
break;
}
if (!unsigned_type)
value = twos_complement_to_s32(value, data_size * 8);
return value;
}
static void cyapa_gen5_guess_electrodes(struct cyapa *cyapa,
int *electrodes_rx, int *electrodes_tx)
{
if (cyapa->electrodes_rx != 0) {
*electrodes_rx = cyapa->electrodes_rx;
*electrodes_tx = (cyapa->electrodes_x == *electrodes_rx) ?
cyapa->electrodes_y : cyapa->electrodes_x;
} else {
*electrodes_tx = min(cyapa->electrodes_x, cyapa->electrodes_y);
*electrodes_rx = max(cyapa->electrodes_x, cyapa->electrodes_y);
}
}
/*
* Read all the global mutual or self idac data or mutual or self local PWC
* data based on the @idac_data_type.
* If the input value of @data_size is 0, then means read global mutual or
* self idac data. For read global mutual idac data, @idac_max, @idac_min and
* @idac_ave are in order used to return the max value of global mutual idac
* data, the min value of global mutual idac and the average value of the
* global mutual idac data. For read global self idac data, @idac_max is used
* to return the global self cap idac data in Rx direction, @idac_min is used
* to return the global self cap idac data in Tx direction. @idac_ave is not
* used.
* If the input value of @data_size is not 0, than means read the mutual or
* self local PWC data. The @idac_max, @idac_min and @idac_ave are used to
* return the max, min and average value of the mutual or self local PWC data.
* Note, in order to raed mutual local PWC data, must read invoke this function
* to read the mutual global idac data firstly to set the correct Rx number
* value, otherwise, the read mutual idac and PWC data may not correct.
*/
static int cyapa_gen5_read_idac_data(struct cyapa *cyapa,
u8 cmd_code, u8 idac_data_type, int *data_size,
int *idac_max, int *idac_min, int *idac_ave)
{
struct gen5_app_cmd_head *cmd_head;
u8 cmd[12];
u8 resp_data[256];
int resp_len;
int read_len;
int value;
u16 offset;
int read_elements;
bool read_global_idac;
int sum, count, max_element_cnt;
int tmp_max, tmp_min, tmp_ave, tmp_sum, tmp_count;
int electrodes_rx, electrodes_tx;
int i;
int error;
if (cmd_code != GEN5_CMD_RETRIEVE_DATA_STRUCTURE ||
(idac_data_type != GEN5_RETRIEVE_MUTUAL_PWC_DATA &&
idac_data_type != GEN5_RETRIEVE_SELF_CAP_PWC_DATA) ||
!data_size || !idac_max || !idac_min || !idac_ave)
return -EINVAL;
*idac_max = INT_MIN;
*idac_min = INT_MAX;
sum = count = tmp_count = 0;
electrodes_rx = electrodes_tx = 0;
if (*data_size == 0) {
/*
* Read global idac values firstly.
* Currently, no idac data exceed 4 bytes.
*/
read_global_idac = true;
offset = 0;
*data_size = 4;
tmp_max = INT_MIN;
tmp_min = INT_MAX;
tmp_ave = tmp_sum = tmp_count = 0;
if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) {
if (cyapa->aligned_electrodes_rx == 0) {
cyapa_gen5_guess_electrodes(cyapa,
&electrodes_rx, &electrodes_tx);
cyapa->aligned_electrodes_rx =
(electrodes_rx + 3) & ~3u;
}
max_element_cnt =
(cyapa->aligned_electrodes_rx + 7) & ~7u;
} else {
max_element_cnt = 2;
}
} else {
read_global_idac = false;
if (*data_size > 4)
*data_size = 4;
/* Calculate the start offset in bytes of local PWC data. */
if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) {
offset = cyapa->aligned_electrodes_rx * (*data_size);
if (cyapa->electrodes_rx == cyapa->electrodes_x)
electrodes_tx = cyapa->electrodes_y;
else
electrodes_tx = cyapa->electrodes_x;
max_element_cnt = ((cyapa->aligned_electrodes_rx + 7) &
~7u) * electrodes_tx;
} else if (idac_data_type == GEN5_RETRIEVE_SELF_CAP_PWC_DATA) {
offset = 2;
max_element_cnt = cyapa->electrodes_x +
cyapa->electrodes_y;
max_element_cnt = (max_element_cnt + 3) & ~3u;
}
}
memset(cmd, 0, sizeof(cmd));
cmd_head = (struct gen5_app_cmd_head *)cmd;
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &cmd_head->addr);
put_unaligned_le16(sizeof(cmd) - 2, &cmd_head->length);
cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
cmd_head->cmd_code = cmd_code;
do {
read_elements = (256 - GEN5_RESP_DATA_STRUCTURE_OFFSET) /
(*data_size);
read_elements = min(read_elements, max_element_cnt - count);
read_len = read_elements * (*data_size);
put_unaligned_le16(offset, &cmd_head->parameter_data[0]);
put_unaligned_le16(read_len, &cmd_head->parameter_data[2]);
cmd_head->parameter_data[4] = idac_data_type;
resp_len = GEN5_RESP_DATA_STRUCTURE_OFFSET + read_len;
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data,
true);
if (error || resp_len < GEN5_RESP_DATA_STRUCTURE_OFFSET ||
!VALID_CMD_RESP_HEADER(resp_data, cmd_code) ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]) ||
resp_data[6] != idac_data_type)
return (error < 0) ? error : -EAGAIN;
read_len = get_unaligned_le16(&resp_data[7]);
if (read_len == 0)
break;
*data_size = (resp_data[9] & GEN5_PWC_DATA_ELEMENT_SIZE_MASK);
if (read_len < *data_size)
return -EINVAL;
if (read_global_idac &&
idac_data_type == GEN5_RETRIEVE_SELF_CAP_PWC_DATA) {
/* Rx's self global idac data. */
*idac_max = cyapa_parse_structure_data(
resp_data[9],
&resp_data[GEN5_RESP_DATA_STRUCTURE_OFFSET],
*data_size);
/* Tx's self global idac data. */
*idac_min = cyapa_parse_structure_data(
resp_data[9],
&resp_data[GEN5_RESP_DATA_STRUCTURE_OFFSET +
*data_size],
*data_size);
break;
}
/* Read mutual global idac or local mutual/self PWC data. */
offset += read_len;
for (i = 10; i < (read_len + GEN5_RESP_DATA_STRUCTURE_OFFSET);
i += *data_size) {
value = cyapa_parse_structure_data(resp_data[9],
&resp_data[i], *data_size);
*idac_min = min(value, *idac_min);
*idac_max = max(value, *idac_max);
if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA &&
tmp_count < cyapa->aligned_electrodes_rx &&
read_global_idac) {
/*
* The value gap betwen global and local mutual
* idac data must bigger than 50%.
* Normally, global value bigger than 50,
* local values less than 10.
*/
if (!tmp_ave || value > tmp_ave / 2) {
tmp_min = min(value, tmp_min);
tmp_max = max(value, tmp_max);
tmp_sum += value;
tmp_count++;
tmp_ave = tmp_sum / tmp_count;
}
}
sum += value;
count++;
if (count >= max_element_cnt)
goto out;
}
} while (true);
out:
*idac_ave = count ? (sum / count) : 0;
if (read_global_idac &&
idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) {
if (tmp_count == 0)
return 0;
if (tmp_count == cyapa->aligned_electrodes_rx) {
cyapa->electrodes_rx = cyapa->electrodes_rx ?
cyapa->electrodes_rx : electrodes_rx;
} else if (tmp_count == electrodes_rx) {
cyapa->electrodes_rx = cyapa->electrodes_rx ?
cyapa->electrodes_rx : electrodes_rx;
cyapa->aligned_electrodes_rx = electrodes_rx;
} else {
cyapa->electrodes_rx = cyapa->electrodes_rx ?
cyapa->electrodes_rx : electrodes_tx;
cyapa->aligned_electrodes_rx = tmp_count;
}
*idac_min = tmp_min;
*idac_max = tmp_max;
*idac_ave = tmp_ave;
}
return 0;
}
static int cyapa_gen5_read_mutual_idac_data(struct cyapa *cyapa,
int *gidac_mutual_max, int *gidac_mutual_min, int *gidac_mutual_ave,
int *lidac_mutual_max, int *lidac_mutual_min, int *lidac_mutual_ave)
{
int data_size;
int error;
*gidac_mutual_max = *gidac_mutual_min = *gidac_mutual_ave = 0;
*lidac_mutual_max = *lidac_mutual_min = *lidac_mutual_ave = 0;
data_size = 0;
error = cyapa_gen5_read_idac_data(cyapa,
GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
GEN5_RETRIEVE_MUTUAL_PWC_DATA,
&data_size,
gidac_mutual_max, gidac_mutual_min, gidac_mutual_ave);
if (error)
return error;
error = cyapa_gen5_read_idac_data(cyapa,
GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
GEN5_RETRIEVE_MUTUAL_PWC_DATA,
&data_size,
lidac_mutual_max, lidac_mutual_min, lidac_mutual_ave);
return error;
}
static int cyapa_gen5_read_self_idac_data(struct cyapa *cyapa,
int *gidac_self_rx, int *gidac_self_tx,
int *lidac_self_max, int *lidac_self_min, int *lidac_self_ave)
{
int data_size;
int error;
*gidac_self_rx = *gidac_self_tx = 0;
*lidac_self_max = *lidac_self_min = *lidac_self_ave = 0;
data_size = 0;
error = cyapa_gen5_read_idac_data(cyapa,
GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
GEN5_RETRIEVE_SELF_CAP_PWC_DATA,
&data_size,
lidac_self_max, lidac_self_min, lidac_self_ave);
if (error)
return error;
*gidac_self_rx = *lidac_self_max;
*gidac_self_tx = *lidac_self_min;
error = cyapa_gen5_read_idac_data(cyapa,
GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
GEN5_RETRIEVE_SELF_CAP_PWC_DATA,
&data_size,
lidac_self_max, lidac_self_min, lidac_self_ave);
return error;
}
static ssize_t cyapa_gen5_execute_panel_scan(struct cyapa *cyapa)
{
struct gen5_app_cmd_head *app_cmd_head;
u8 cmd[7];
u8 resp_data[6];
int resp_len;
int error;
memset(cmd, 0, sizeof(cmd));
app_cmd_head = (struct gen5_app_cmd_head *)cmd;
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length);
app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = GEN5_CMD_EXECUTE_PANEL_SCAN;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
if (error || resp_len != sizeof(resp_data) ||
!VALID_CMD_RESP_HEADER(resp_data,
GEN5_CMD_EXECUTE_PANEL_SCAN) ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
return error ? error : -EAGAIN;
return 0;
}
static int cyapa_gen5_read_panel_scan_raw_data(struct cyapa *cyapa,
u8 cmd_code, u8 raw_data_type, int raw_data_max_num,
int *raw_data_max, int *raw_data_min, int *raw_data_ave,
u8 *buffer)
{
struct gen5_app_cmd_head *app_cmd_head;
struct gen5_retrieve_panel_scan_data *panel_sacn_data;
u8 cmd[12];
u8 resp_data[256]; /* Max bytes can transfer one time. */
int resp_len;
int read_elements;
int read_len;
u16 offset;
s32 value;
int sum, count;
int data_size;
s32 *intp;
int i;
int error;
if (cmd_code != GEN5_CMD_RETRIEVE_PANEL_SCAN ||
(raw_data_type > GEN5_PANEL_SCAN_SELF_DIFFCOUNT) ||
!raw_data_max || !raw_data_min || !raw_data_ave)
return -EINVAL;
intp = (s32 *)buffer;
*raw_data_max = INT_MIN;
*raw_data_min = INT_MAX;
sum = count = 0;
offset = 0;
/* Assume max element size is 4 currently. */
read_elements = (256 - GEN5_RESP_DATA_STRUCTURE_OFFSET) / 4;
read_len = read_elements * 4;
app_cmd_head = (struct gen5_app_cmd_head *)cmd;
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length);
app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = cmd_code;
panel_sacn_data = (struct gen5_retrieve_panel_scan_data *)
app_cmd_head->parameter_data;
do {
put_unaligned_le16(offset, &panel_sacn_data->read_offset);
put_unaligned_le16(read_elements,
&panel_sacn_data->read_elements);
panel_sacn_data->data_id = raw_data_type;
resp_len = GEN5_RESP_DATA_STRUCTURE_OFFSET + read_len;
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
if (error || resp_len < GEN5_RESP_DATA_STRUCTURE_OFFSET ||
!VALID_CMD_RESP_HEADER(resp_data, cmd_code) ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]) ||
resp_data[6] != raw_data_type)
return error ? error : -EAGAIN;
read_elements = get_unaligned_le16(&resp_data[7]);
if (read_elements == 0)
break;
data_size = (resp_data[9] & GEN5_PWC_DATA_ELEMENT_SIZE_MASK);
offset += read_elements;
if (read_elements) {
for (i = GEN5_RESP_DATA_STRUCTURE_OFFSET;
i < (read_elements * data_size +
GEN5_RESP_DATA_STRUCTURE_OFFSET);
i += data_size) {
value = cyapa_parse_structure_data(resp_data[9],
&resp_data[i], data_size);
*raw_data_min = min(value, *raw_data_min);
*raw_data_max = max(value, *raw_data_max);
if (intp)
put_unaligned_le32(value, &intp[count]);
sum += value;
count++;
}
}
if (count >= raw_data_max_num)
break;
read_elements = (sizeof(resp_data) -
GEN5_RESP_DATA_STRUCTURE_OFFSET) / data_size;
read_len = read_elements * data_size;
} while (true);
*raw_data_ave = count ? (sum / count) : 0;
return 0;
}
static ssize_t cyapa_gen5_show_baseline(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
int gidac_mutual_max, gidac_mutual_min, gidac_mutual_ave;
int lidac_mutual_max, lidac_mutual_min, lidac_mutual_ave;
int gidac_self_rx, gidac_self_tx;
int lidac_self_max, lidac_self_min, lidac_self_ave;
int raw_cap_mutual_max, raw_cap_mutual_min, raw_cap_mutual_ave;
int raw_cap_self_max, raw_cap_self_min, raw_cap_self_ave;
int mutual_diffdata_max, mutual_diffdata_min, mutual_diffdata_ave;
int self_diffdata_max, self_diffdata_min, self_diffdata_ave;
int mutual_baseline_max, mutual_baseline_min, mutual_baseline_ave;
int self_baseline_max, self_baseline_min, self_baseline_ave;
int error, resume_error;
int size;
if (cyapa->state != CYAPA_STATE_GEN5_APP)
return -EBUSY;
/* 1. Suspend Scanning*/
error = cyapa_gen5_suspend_scanning(cyapa);
if (error)
return error;
/* 2. Read global and local mutual IDAC data. */
gidac_self_rx = gidac_self_tx = 0;
error = cyapa_gen5_read_mutual_idac_data(cyapa,
&gidac_mutual_max, &gidac_mutual_min,
&gidac_mutual_ave, &lidac_mutual_max,
&lidac_mutual_min, &lidac_mutual_ave);
if (error)
goto resume_scanning;
/* 3. Read global and local self IDAC data. */
error = cyapa_gen5_read_self_idac_data(cyapa,
&gidac_self_rx, &gidac_self_tx,
&lidac_self_max, &lidac_self_min,
&lidac_self_ave);
if (error)
goto resume_scanning;
/* 4. Execuate panel scan. It must be executed before read data. */
error = cyapa_gen5_execute_panel_scan(cyapa);
if (error)
goto resume_scanning;
/* 5. Retrieve panel scan, mutual cap raw data. */
error = cyapa_gen5_read_panel_scan_raw_data(cyapa,
GEN5_CMD_RETRIEVE_PANEL_SCAN,
GEN5_PANEL_SCAN_MUTUAL_RAW_DATA,
cyapa->electrodes_x * cyapa->electrodes_y,
&raw_cap_mutual_max, &raw_cap_mutual_min,
&raw_cap_mutual_ave,
NULL);
if (error)
goto resume_scanning;
/* 6. Retrieve panel scan, self cap raw data. */
error = cyapa_gen5_read_panel_scan_raw_data(cyapa,
GEN5_CMD_RETRIEVE_PANEL_SCAN,
GEN5_PANEL_SCAN_SELF_RAW_DATA,
cyapa->electrodes_x + cyapa->electrodes_y,
&raw_cap_self_max, &raw_cap_self_min,
&raw_cap_self_ave,
NULL);
if (error)
goto resume_scanning;
/* 7. Retrieve panel scan, mutual cap diffcount raw data. */
error = cyapa_gen5_read_panel_scan_raw_data(cyapa,
GEN5_CMD_RETRIEVE_PANEL_SCAN,
GEN5_PANEL_SCAN_MUTUAL_DIFFCOUNT,
cyapa->electrodes_x * cyapa->electrodes_y,
&mutual_diffdata_max, &mutual_diffdata_min,
&mutual_diffdata_ave,
NULL);
if (error)
goto resume_scanning;
/* 8. Retrieve panel scan, self cap diffcount raw data. */
error = cyapa_gen5_read_panel_scan_raw_data(cyapa,
GEN5_CMD_RETRIEVE_PANEL_SCAN,
GEN5_PANEL_SCAN_SELF_DIFFCOUNT,
cyapa->electrodes_x + cyapa->electrodes_y,
&self_diffdata_max, &self_diffdata_min,
&self_diffdata_ave,
NULL);
if (error)
goto resume_scanning;
/* 9. Retrieve panel scan, mutual cap baseline raw data. */
error = cyapa_gen5_read_panel_scan_raw_data(cyapa,
GEN5_CMD_RETRIEVE_PANEL_SCAN,
GEN5_PANEL_SCAN_MUTUAL_BASELINE,
cyapa->electrodes_x * cyapa->electrodes_y,
&mutual_baseline_max, &mutual_baseline_min,
&mutual_baseline_ave,
NULL);
if (error)
goto resume_scanning;
/* 10. Retrieve panel scan, self cap baseline raw data. */
error = cyapa_gen5_read_panel_scan_raw_data(cyapa,
GEN5_CMD_RETRIEVE_PANEL_SCAN,
GEN5_PANEL_SCAN_SELF_BASELINE,
cyapa->electrodes_x + cyapa->electrodes_y,
&self_baseline_max, &self_baseline_min,
&self_baseline_ave,
NULL);
if (error)
goto resume_scanning;
resume_scanning:
/* 11. Resume Scanning*/
resume_error = cyapa_gen5_resume_scanning(cyapa);
if (resume_error || error)
return resume_error ? resume_error : error;
/* 12. Output data strings */
size = scnprintf(buf, PAGE_SIZE, "%d %d %d %d %d %d %d %d %d %d %d ",
gidac_mutual_min, gidac_mutual_max, gidac_mutual_ave,
lidac_mutual_min, lidac_mutual_max, lidac_mutual_ave,
gidac_self_rx, gidac_self_tx,
lidac_self_min, lidac_self_max, lidac_self_ave);
size += scnprintf(buf + size, PAGE_SIZE - size,
"%d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d\n",
raw_cap_mutual_min, raw_cap_mutual_max, raw_cap_mutual_ave,
raw_cap_self_min, raw_cap_self_max, raw_cap_self_ave,
mutual_diffdata_min, mutual_diffdata_max, mutual_diffdata_ave,
self_diffdata_min, self_diffdata_max, self_diffdata_ave,
mutual_baseline_min, mutual_baseline_max, mutual_baseline_ave,
self_baseline_min, self_baseline_max, self_baseline_ave);
return size;
}
static bool cyapa_gen5_sort_system_info_data(struct cyapa *cyapa,
u8 *buf, int len)
{
/* Check the report id and command code */
if (VALID_CMD_RESP_HEADER(buf, 0x02))
return true;
return false;
}
static int cyapa_gen5_bl_query_data(struct cyapa *cyapa)
{
u8 bl_query_data_cmd[] = { 0x04, 0x00, 0x0b, 0x00, 0x40, 0x00,
0x01, 0x3c, 0x00, 0x00, 0xb0, 0x42, 0x17
};
u8 resp_data[GEN5_BL_READ_APP_INFO_RESP_LEN];
int resp_len;
int error;
resp_len = GEN5_BL_READ_APP_INFO_RESP_LEN;
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
bl_query_data_cmd, sizeof(bl_query_data_cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_bl_resp_data, false);
if (error || resp_len != GEN5_BL_READ_APP_INFO_RESP_LEN ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
return error ? error : -EIO;
memcpy(&cyapa->product_id[0], &resp_data[8], 5);
cyapa->product_id[5] = '-';
memcpy(&cyapa->product_id[6], &resp_data[13], 6);
cyapa->product_id[12] = '-';
memcpy(&cyapa->product_id[13], &resp_data[19], 2);
cyapa->product_id[15] = '\0';
cyapa->fw_maj_ver = resp_data[22];
cyapa->fw_min_ver = resp_data[23];
return 0;
}
static int cyapa_gen5_get_query_data(struct cyapa *cyapa)
{
u8 get_system_information[] = {
0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x02
};
u8 resp_data[71];
int resp_len;
u16 product_family;
int error;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
get_system_information, sizeof(get_system_information),
resp_data, &resp_len,
2000, cyapa_gen5_sort_system_info_data, false);
if (error || resp_len < sizeof(resp_data))
return error ? error : -EIO;
product_family = get_unaligned_le16(&resp_data[7]);
if ((product_family & GEN5_PRODUCT_FAMILY_MASK) !=
GEN5_PRODUCT_FAMILY_TRACKPAD)
return -EINVAL;
cyapa->fw_maj_ver = resp_data[15];
cyapa->fw_min_ver = resp_data[16];
cyapa->electrodes_x = resp_data[52];
cyapa->electrodes_y = resp_data[53];
cyapa->physical_size_x = get_unaligned_le16(&resp_data[54]) / 100;
cyapa->physical_size_y = get_unaligned_le16(&resp_data[56]) / 100;
cyapa->max_abs_x = get_unaligned_le16(&resp_data[58]);
cyapa->max_abs_y = get_unaligned_le16(&resp_data[60]);
cyapa->max_z = get_unaligned_le16(&resp_data[62]);
cyapa->x_origin = resp_data[64] & 0x01;
cyapa->y_origin = resp_data[65] & 0x01;
cyapa->btn_capability = (resp_data[70] << 3) & CAPABILITY_BTN_MASK;
memcpy(&cyapa->product_id[0], &resp_data[33], 5);
cyapa->product_id[5] = '-';
memcpy(&cyapa->product_id[6], &resp_data[38], 6);
cyapa->product_id[12] = '-';
memcpy(&cyapa->product_id[13], &resp_data[44], 2);
cyapa->product_id[15] = '\0';
if (!cyapa->electrodes_x || !cyapa->electrodes_y ||
!cyapa->physical_size_x || !cyapa->physical_size_y ||
!cyapa->max_abs_x || !cyapa->max_abs_y || !cyapa->max_z)
return -EINVAL;
return 0;
}
static int cyapa_gen5_do_operational_check(struct cyapa *cyapa)
{
struct device *dev = &cyapa->client->dev;
int error;
if (cyapa->gen != CYAPA_GEN5)
return -ENODEV;
switch (cyapa->state) {
case CYAPA_STATE_GEN5_BL:
error = cyapa_gen5_bl_exit(cyapa);
if (error) {
/* Rry to update trackpad product information. */
cyapa_gen5_bl_query_data(cyapa);
goto out;
}
cyapa->state = CYAPA_STATE_GEN5_APP;
case CYAPA_STATE_GEN5_APP:
/*
* If trackpad device in deep sleep mode,
* the app command will fail.
* So always try to reset trackpad device to full active when
* the device state is requeried.
*/
error = cyapa_gen5_set_power_mode(cyapa,
PWR_MODE_FULL_ACTIVE, 0);
if (error)
dev_warn(dev, "%s: failed to set power active mode.\n",
__func__);
/* Get trackpad product information. */
error = cyapa_gen5_get_query_data(cyapa);
if (error)
goto out;
/* Only support product ID starting with CYTRA */
if (memcmp(cyapa->product_id, product_id,
strlen(product_id)) != 0) {
dev_err(dev, "%s: unknown product ID (%s)\n",
__func__, cyapa->product_id);
error = -EINVAL;
}
break;
default:
error = -EINVAL;
}
out:
return error;
}
/*
* Return false, do not continue process
* Return true, continue process.
*/
static bool cyapa_gen5_irq_cmd_handler(struct cyapa *cyapa)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int length;
if (atomic_read(&gen5_pip->cmd_issued)) {
/* Polling command response data. */
if (gen5_pip->is_irq_mode == false)
return false;
/*
* Read out all none command response data.
* these output data may caused by user put finger on
* trackpad when host waiting the command response.
*/
cyapa_i2c_pip_read(cyapa, gen5_pip->irq_cmd_buf,
GEN5_RESP_LENGTH_SIZE);
length = get_unaligned_le16(gen5_pip->irq_cmd_buf);
length = (length <= GEN5_RESP_LENGTH_SIZE) ?
GEN5_RESP_LENGTH_SIZE : length;
if (length > GEN5_RESP_LENGTH_SIZE)
cyapa_i2c_pip_read(cyapa,
gen5_pip->irq_cmd_buf, length);
if (!(gen5_pip->resp_sort_func &&
gen5_pip->resp_sort_func(cyapa,
gen5_pip->irq_cmd_buf, length))) {
/*
* Cover the Gen5 V1 firmware issue.
* The issue is there is no interrut will be
* asserted to notityf host to read a command
* data out when always has finger touch on
* trackpad during the command is issued to
* trackad device.
* This issue has the scenario is that,
* user always has his fingers touched on
* trackpad device when booting/rebooting
* their chrome book.
*/
length = 0;
if (gen5_pip->resp_len)
length = *gen5_pip->resp_len;
cyapa_empty_pip_output_data(cyapa,
gen5_pip->resp_data,
&length,
gen5_pip->resp_sort_func);
if (gen5_pip->resp_len && length != 0) {
*gen5_pip->resp_len = length;
atomic_dec(&gen5_pip->cmd_issued);
complete(&gen5_pip->cmd_ready);
}
return false;
}
if (gen5_pip->resp_data && gen5_pip->resp_len) {
*gen5_pip->resp_len = (*gen5_pip->resp_len < length) ?
*gen5_pip->resp_len : length;
memcpy(gen5_pip->resp_data, gen5_pip->irq_cmd_buf,
*gen5_pip->resp_len);
}
atomic_dec(&gen5_pip->cmd_issued);
complete(&gen5_pip->cmd_ready);
return false;
}
return true;
}
static void cyapa_gen5_report_buttons(struct cyapa *cyapa,
const struct cyapa_gen5_report_data *report_data)
{
struct input_dev *input = cyapa->input;
u8 buttons = report_data->report_head[GEN5_BUTTONS_OFFSET];
buttons = (buttons << CAPABILITY_BTN_SHIFT) & CAPABILITY_BTN_MASK;
if (cyapa->btn_capability & CAPABILITY_LEFT_BTN_MASK) {
input_report_key(input, BTN_LEFT,
!!(buttons & CAPABILITY_LEFT_BTN_MASK));
}
if (cyapa->btn_capability & CAPABILITY_MIDDLE_BTN_MASK) {
input_report_key(input, BTN_MIDDLE,
!!(buttons & CAPABILITY_MIDDLE_BTN_MASK));
}
if (cyapa->btn_capability & CAPABILITY_RIGHT_BTN_MASK) {
input_report_key(input, BTN_RIGHT,
!!(buttons & CAPABILITY_RIGHT_BTN_MASK));
}
input_sync(input);
}
static void cyapa_gen5_report_slot_data(struct cyapa *cyapa,
const struct cyapa_gen5_touch_record *touch)
{
struct input_dev *input = cyapa->input;
u8 event_id = GEN5_GET_EVENT_ID(touch->touch_tip_event_id);
int slot = GEN5_GET_TOUCH_ID(touch->touch_tip_event_id);
int x, y;
if (event_id == RECORD_EVENT_LIFTOFF)
return;
input_mt_slot(input, slot);
input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
x = (touch->x_hi << 8) | touch->x_lo;
if (cyapa->x_origin)
x = cyapa->max_abs_x - x;
input_report_abs(input, ABS_MT_POSITION_X, x);
y = (touch->y_hi << 8) | touch->y_lo;
if (cyapa->y_origin)
y = cyapa->max_abs_y - y;
input_report_abs(input, ABS_MT_POSITION_Y, y);
input_report_abs(input, ABS_MT_PRESSURE,
touch->z);
input_report_abs(input, ABS_MT_TOUCH_MAJOR,
touch->major_axis_len);
input_report_abs(input, ABS_MT_TOUCH_MINOR,
touch->minor_axis_len);
input_report_abs(input, ABS_MT_WIDTH_MAJOR,
touch->major_tool_len);
input_report_abs(input, ABS_MT_WIDTH_MINOR,
touch->minor_tool_len);
input_report_abs(input, ABS_MT_ORIENTATION,
touch->orientation);
}
static void cyapa_gen5_report_touches(struct cyapa *cyapa,
const struct cyapa_gen5_report_data *report_data)
{
struct input_dev *input = cyapa->input;
unsigned int touch_num;
int i;
touch_num = report_data->report_head[GEN5_NUMBER_OF_TOUCH_OFFSET] &
GEN5_NUMBER_OF_TOUCH_MASK;
for (i = 0; i < touch_num; i++)
cyapa_gen5_report_slot_data(cyapa,
&report_data->touch_records[i]);
input_mt_sync_frame(input);
input_sync(input);
}
static int cyapa_gen5_irq_handler(struct cyapa *cyapa)
{
struct device *dev = &cyapa->client->dev;
struct cyapa_gen5_report_data report_data;
int ret;
u8 report_id;
unsigned int report_len;
if (cyapa->gen != CYAPA_GEN5 ||
cyapa->state != CYAPA_STATE_GEN5_APP) {
dev_err(dev, "invalid device state, gen=%d, state=0x%02x\n",
cyapa->gen, cyapa->state);
return -EINVAL;
}
ret = cyapa_i2c_pip_read(cyapa, (u8 *)&report_data,
GEN5_RESP_LENGTH_SIZE);
if (ret != GEN5_RESP_LENGTH_SIZE) {
dev_err(dev, "failed to read length bytes, (%d)\n", ret);
return -EINVAL;
}
report_len = get_unaligned_le16(
&report_data.report_head[GEN5_RESP_LENGTH_OFFSET]);
if (report_len < GEN5_RESP_LENGTH_SIZE) {
/* Invliad length or internal reset happened. */
dev_err(dev, "invalid report_len=%d. bytes: %02x %02x\n",
report_len, report_data.report_head[0],
report_data.report_head[1]);
return -EINVAL;
}
/* Idle, no data for report. */
if (report_len == GEN5_RESP_LENGTH_SIZE)
return 0;
ret = cyapa_i2c_pip_read(cyapa, (u8 *)&report_data, report_len);
if (ret != report_len) {
dev_err(dev, "failed to read %d bytes report data, (%d)\n",
report_len, ret);
return -EINVAL;
}
report_id = report_data.report_head[GEN5_RESP_REPORT_ID_OFFSET];
if (report_id == GEN5_WAKEUP_EVENT_REPORT_ID &&
report_len == GEN5_WAKEUP_EVENT_SIZE) {
/*
* Device wake event from deep sleep mode for touch.
* This interrupt event is used to wake system up.
*/
return 0;
} else if (report_id != GEN5_TOUCH_REPORT_ID &&
report_id != GEN5_BTN_REPORT_ID &&
report_id != GEN5_OLD_PUSH_BTN_REPORT_ID &&
report_id != GEN5_PUSH_BTN_REPORT_ID) {
/* Running in BL mode or unknown response data read. */
dev_err(dev, "invalid report_id=0x%02x\n", report_id);
return -EINVAL;
}
if (report_id == GEN5_TOUCH_REPORT_ID &&
(report_len < GEN5_TOUCH_REPORT_HEAD_SIZE ||
report_len > GEN5_TOUCH_REPORT_MAX_SIZE)) {
/* Invalid report data length for finger packet. */
dev_err(dev, "invalid touch packet length=%d\n", report_len);
return 0;
}
if ((report_id == GEN5_BTN_REPORT_ID ||
report_id == GEN5_OLD_PUSH_BTN_REPORT_ID ||
report_id == GEN5_PUSH_BTN_REPORT_ID) &&
(report_len < GEN5_BTN_REPORT_HEAD_SIZE ||
report_len > GEN5_BTN_REPORT_MAX_SIZE)) {
/* Invalid report data length of button packet. */
dev_err(dev, "invalid button packet length=%d\n", report_len);
return 0;
}
if (report_id == GEN5_TOUCH_REPORT_ID)
cyapa_gen5_report_touches(cyapa, &report_data);
else
cyapa_gen5_report_buttons(cyapa, &report_data);
return 0;
}
static int cyapa_gen5_bl_activate(struct cyapa *cyapa) { return 0; }
static int cyapa_gen5_bl_deactivate(struct cyapa *cyapa) { return 0; }
const struct cyapa_dev_ops cyapa_gen5_ops = {
.check_fw = cyapa_gen5_check_fw,
.bl_enter = cyapa_gen5_bl_enter,
.bl_initiate = cyapa_gen5_bl_initiate,
.update_fw = cyapa_gen5_do_fw_update,
.bl_activate = cyapa_gen5_bl_activate,
.bl_deactivate = cyapa_gen5_bl_deactivate,
.show_baseline = cyapa_gen5_show_baseline,
.calibrate_store = cyapa_gen5_do_calibrate,
.initialize = cyapa_gen5_initialize,
.state_parse = cyapa_gen5_state_parse,
.operational_check = cyapa_gen5_do_operational_check,
.irq_handler = cyapa_gen5_irq_handler,
.irq_cmd_handler = cyapa_gen5_irq_cmd_handler,
.sort_empty_output_data = cyapa_empty_pip_output_data,
.set_power_mode = cyapa_gen5_set_power_mode,
};
drivers/input/mouse/cypress_ps2.c
View file @ 718749d5
......@@ -538,7 +538,7 @@ static void cypress_process_packet(struct psmouse *psmouse, bool zero_pkt)
pos[i].y = contact->y;
}
input_mt_assign_slots(input, slots, pos, n);
input_mt_assign_slots(input, slots, pos, n, 0);
for (i = 0; i < n; i++) {
contact = &report_data.contacts[i];
......
drivers/input/mouse/elan_i2c.h
View file @ 718749d5
......@@ -4,7 +4,6 @@
* Copyright (c) 2013 ELAN Microelectronics Corp.
*
* Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
* Version: 1.5.5
*
* Based on cyapa driver:
* copyright (c) 2011-2012 Cypress Semiconductor, Inc.
......@@ -33,8 +32,9 @@
#define ETP_FW_IAP_PAGE_ERR (1 << 5)
#define ETP_FW_IAP_INTF_ERR (1 << 4)
#define ETP_FW_PAGE_SIZE 64
#define ETP_FW_PAGE_COUNT 768
#define ETP_FW_SIZE (ETP_FW_PAGE_SIZE * ETP_FW_PAGE_COUNT)
#define ETP_FW_VAILDPAGE_COUNT 768
#define ETP_FW_SIGNATURE_SIZE 6
#define ETP_FW_SIGNATURE_ADDRESS 0xBFFA
struct i2c_client;
struct completion;
......
drivers/input/mouse/elan_i2c_core.c
View file @ 718749d5
......@@ -4,7 +4,7 @@
* Copyright (c) 2013 ELAN Microelectronics Corp.
*
* Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
* Version: 1.5.5
* Version: 1.5.6
*
* Based on cyapa driver:
* copyright (c) 2011-2012 Cypress Semiconductor, Inc.
......@@ -40,7 +40,7 @@
#include "elan_i2c.h"
#define DRIVER_NAME "elan_i2c"
#define ELAN_DRIVER_VERSION "1.5.5"
#define ELAN_DRIVER_VERSION "1.5.6"
#define ETP_PRESSURE_OFFSET 25
#define ETP_MAX_PRESSURE 255
#define ETP_FWIDTH_REDUCE 90
......@@ -312,7 +312,7 @@ static int __elan_update_firmware(struct elan_tp_data *data,
iap_start_addr = get_unaligned_le16(&fw->data[ETP_IAP_START_ADDR * 2]);
boot_page_count = (iap_start_addr * 2) / ETP_FW_PAGE_SIZE;
for (i = boot_page_count; i < ETP_FW_PAGE_COUNT; i++) {
for (i = boot_page_count; i < ETP_FW_VAILDPAGE_COUNT; i++) {
u16 checksum = 0;
const u8 *page = &fw->data[i * ETP_FW_PAGE_SIZE];
......@@ -434,10 +434,11 @@ static ssize_t elan_sysfs_update_fw(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct elan_tp_data *data = i2c_get_clientdata(client);
struct elan_tp_data *data = dev_get_drvdata(dev);
const struct firmware *fw;
int error;
const u8 *fw_signature;
static const u8 signature[] = {0xAA, 0x55, 0xCC, 0x33, 0xFF, 0xFF};
error = request_firmware(&fw, ETP_FW_NAME, dev);
if (error) {
......@@ -446,10 +447,12 @@ static ssize_t elan_sysfs_update_fw(struct device *dev,
return error;
}
/* Firmware must be exactly PAGE_NUM * PAGE_SIZE bytes */
if (fw->size != ETP_FW_SIZE) {
dev_err(dev, "invalid firmware size = %zu, expected %d.\n",
fw->size, ETP_FW_SIZE);
/* Firmware file must match signature data */
fw_signature = &fw->data[ETP_FW_SIGNATURE_ADDRESS];
if (memcmp(fw_signature, signature, sizeof(signature)) != 0) {
dev_err(dev, "signature mismatch (expected %*ph, got %*ph)\n",
(int)sizeof(signature), signature,
(int)sizeof(signature), fw_signature);
error = -EBADF;
goto out_release_fw;
}
......
drivers/input/mouse/elan_i2c_i2c.c
View file @ 718749d5
......@@ -4,7 +4,6 @@
* Copyright (c) 2013 ELAN Microelectronics Corp.
*
* Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
* Version: 1.5.5
*
* Based on cyapa driver:
* copyright (c) 2011-2012 Cypress Semiconductor, Inc.
......
drivers/input/mouse/elan_i2c_smbus.c
View file @ 718749d5
......@@ -4,7 +4,6 @@
* Copyright (c) 2013 ELAN Microelectronics Corp.
*
* Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
* Version: 1.5.5
*
* Based on cyapa driver:
* copyright (c) 2011-2012 Cypress Semiconductor, Inc.
......@@ -71,7 +70,7 @@ static int elan_smbus_initialize(struct i2c_client *client)
/* compare hello packet */
if (memcmp(values, check, ETP_SMBUS_HELLOPACKET_LEN)) {
dev_err(&client->dev, "hello packet fail [%*px]\n",
dev_err(&client->dev, "hello packet fail [%*ph]\n",
ETP_SMBUS_HELLOPACKET_LEN, values);
return -ENXIO;
}
......
drivers/input/mouse/focaltech.c
View file @ 718749d5
......@@ -2,6 +2,7 @@
* Focaltech TouchPad PS/2 mouse driver
*
* Copyright (c) 2014 Red Hat Inc.
* Copyright (c) 2014 Mathias Gottschlag <mgottschlag@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
......@@ -13,15 +14,14 @@
* Hans de Goede <hdegoede@redhat.com>
*/
/*
* The Focaltech PS/2 touchpad protocol is unknown. This drivers deals with
* detection only, to avoid further detection attempts confusing the touchpad
* this way it at least works in PS/2 mouse compatibility mode.
*/
#include <linux/device.h>
#include <linux/libps2.h>
#include <linux/input/mt.h>
#include <linux/serio.h>
#include <linux/slab.h>
#include "psmouse.h"
#include "focaltech.h"
static const char * const focaltech_pnp_ids[] = {
"FLT0101",
......@@ -30,6 +30,12 @@ static const char * const focaltech_pnp_ids[] = {
NULL
};
/*
* Even if the kernel is built without support for Focaltech PS/2 touchpads (or
* when the real driver fails to recognize the device), we still have to detect
* them in order to avoid further detection attempts confusing the touchpad.
* This way it at least works in PS/2 mouse compatibility mode.
*/
int focaltech_detect(struct psmouse *psmouse, bool set_properties)
{
if (!psmouse_matches_pnp_id(psmouse, focaltech_pnp_ids))
......@@ -37,16 +43,404 @@ int focaltech_detect(struct psmouse *psmouse, bool set_properties)
if (set_properties) {
psmouse->vendor = "FocalTech";
psmouse->name = "FocalTech Touchpad in mouse emulation mode";
psmouse->name = "FocalTech Touchpad";
}
return 0;
}
int focaltech_init(struct psmouse *psmouse)
static void focaltech_reset(struct psmouse *psmouse)
{
ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
psmouse_reset(psmouse);
}
#ifdef CONFIG_MOUSE_PS2_FOCALTECH
/*
* Packet types - the numbers are not consecutive, so we might be missing
* something here.
*/
#define FOC_TOUCH 0x3 /* bitmap of active fingers */
#define FOC_ABS 0x6 /* absolute position of one finger */
#define FOC_REL 0x9 /* relative position of 1-2 fingers */
#define FOC_MAX_FINGERS 5
#define FOC_MAX_X 2431
#define FOC_MAX_Y 1663
/*
* Current state of a single finger on the touchpad.
*/
struct focaltech_finger_state {
/* The touchpad has generated a touch event for the finger */
bool active;
/*
* The touchpad has sent position data for the finger. The
* flag is 0 when the finger is not active, and there is a
* time between the first touch event for the finger and the
* following absolute position packet for the finger where the
* touchpad has declared the finger to be valid, but we do not
* have any valid position yet.
*/
bool valid;
/*
* Absolute position (from the bottom left corner) of the
* finger.
*/
unsigned int x;
unsigned int y;
};
/*
* Description of the current state of the touchpad hardware.
*/
struct focaltech_hw_state {
/*
* The touchpad tracks the positions of the fingers for us,
* the array indices correspond to the finger indices returned
* in the report packages.
*/
struct focaltech_finger_state fingers[FOC_MAX_FINGERS];
/* True if the clickpad has been pressed. */
bool pressed;
};
struct focaltech_data {
unsigned int x_max, y_max;
struct focaltech_hw_state state;
};
static void focaltech_report_state(struct psmouse *psmouse)
{
struct focaltech_data *priv = psmouse->private;
struct focaltech_hw_state *state = &priv->state;
struct input_dev *dev = psmouse->dev;
int i;
for (i = 0; i < FOC_MAX_FINGERS; i++) {
struct focaltech_finger_state *finger = &state->fingers[i];
bool active = finger->active && finger->valid;
input_mt_slot(dev, i);
input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
if (active) {
input_report_abs(dev, ABS_MT_POSITION_X, finger->x);
input_report_abs(dev, ABS_MT_POSITION_Y,
FOC_MAX_Y - finger->y);
}
}
input_mt_report_pointer_emulation(dev, true);
input_report_key(psmouse->dev, BTN_LEFT, state->pressed);
input_sync(psmouse->dev);
}
static void focaltech_process_touch_packet(struct psmouse *psmouse,
unsigned char *packet)
{
struct focaltech_data *priv = psmouse->private;
struct focaltech_hw_state *state = &priv->state;
unsigned char fingers = packet[1];
int i;
state->pressed = (packet[0] >> 4) & 1;
/* the second byte contains a bitmap of all fingers touching the pad */
for (i = 0; i < FOC_MAX_FINGERS; i++) {
state->fingers[i].active = fingers & 0x1;
if (!state->fingers[i].active) {
/*
* Even when the finger becomes active again, we still
* will have to wait for the first valid position.
*/
state->fingers[i].valid = false;
}
fingers >>= 1;
}
}
static void focaltech_process_abs_packet(struct psmouse *psmouse,
unsigned char *packet)
{
struct focaltech_data *priv = psmouse->private;
struct focaltech_hw_state *state = &priv->state;
unsigned int finger;
finger = (packet[1] >> 4) - 1;
if (finger >= FOC_MAX_FINGERS) {
psmouse_err(psmouse, "Invalid finger in abs packet: %d\n",
finger);
return;
}
state->pressed = (packet[0] >> 4) & 1;
/*
* packet[5] contains some kind of tool size in the most
* significant nibble. 0xff is a special value (latching) that
* signals a large contact area.
*/
if (packet[5] == 0xff) {
state->fingers[finger].valid = false;
return;
}
state->fingers[finger].x = ((packet[1] & 0xf) << 8) | packet[2];
state->fingers[finger].y = (packet[3] << 8) | packet[4];
state->fingers[finger].valid = true;
}
static void focaltech_process_rel_packet(struct psmouse *psmouse,
unsigned char *packet)
{
struct focaltech_data *priv = psmouse->private;
struct focaltech_hw_state *state = &priv->state;
int finger1, finger2;
state->pressed = packet[0] >> 7;
finger1 = ((packet[0] >> 4) & 0x7) - 1;
if (finger1 < FOC_MAX_FINGERS) {
state->fingers[finger1].x += (char)packet[1];
state->fingers[finger1].y += (char)packet[2];
} else {
psmouse_err(psmouse, "First finger in rel packet invalid: %d\n",
finger1);
}
/*
* If there is an odd number of fingers, the last relative
* packet only contains one finger. In this case, the second
* finger index in the packet is 0 (we subtract 1 in the lines
* above to create array indices, so the finger will overflow
* and be above FOC_MAX_FINGERS).
*/
finger2 = ((packet[3] >> 4) & 0x7) - 1;
if (finger2 < FOC_MAX_FINGERS) {
state->fingers[finger2].x += (char)packet[4];
state->fingers[finger2].y += (char)packet[5];
}
}
static void focaltech_process_packet(struct psmouse *psmouse)
{
unsigned char *packet = psmouse->packet;
switch (packet[0] & 0xf) {
case FOC_TOUCH:
focaltech_process_touch_packet(psmouse, packet);
break;
case FOC_ABS:
focaltech_process_abs_packet(psmouse, packet);
break;
case FOC_REL:
focaltech_process_rel_packet(psmouse, packet);
break;
default:
psmouse_err(psmouse, "Unknown packet type: %02x\n", packet[0]);
break;
}
focaltech_report_state(psmouse);
}
static psmouse_ret_t focaltech_process_byte(struct psmouse *psmouse)
{
if (psmouse->pktcnt >= 6) { /* Full packet received */
focaltech_process_packet(psmouse);
return PSMOUSE_FULL_PACKET;
}
/*
* We might want to do some validation of the data here, but
* we do not know the protocol well enough
*/
return PSMOUSE_GOOD_DATA;
}
static int focaltech_switch_protocol(struct psmouse *psmouse)
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
unsigned char param[3];
param[0] = 0;
if (ps2_command(ps2dev, param, 0x10f8))
return -EIO;
if (ps2_command(ps2dev, param, 0x10f8))
return -EIO;
if (ps2_command(ps2dev, param, 0x10f8))
return -EIO;
param[0] = 1;
if (ps2_command(ps2dev, param, 0x10f8))
return -EIO;
if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETSCALE11))
return -EIO;
if (ps2_command(ps2dev, param, PSMOUSE_CMD_ENABLE))
return -EIO;
return 0;
}
static void focaltech_disconnect(struct psmouse *psmouse)
{
focaltech_reset(psmouse);
kfree(psmouse->private);
psmouse->private = NULL;
}
static int focaltech_reconnect(struct psmouse *psmouse)
{
int error;
focaltech_reset(psmouse);
error = focaltech_switch_protocol(psmouse);
if (error) {
psmouse_err(psmouse, "Unable to initialize the device\n");
return error;
}
return 0;
}
static void focaltech_set_input_params(struct psmouse *psmouse)
{
struct input_dev *dev = psmouse->dev;
struct focaltech_data *priv = psmouse->private;
/*
* Undo part of setup done for us by psmouse core since touchpad
* is not a relative device.
*/
__clear_bit(EV_REL, dev->evbit);
__clear_bit(REL_X, dev->relbit);
__clear_bit(REL_Y, dev->relbit);
__clear_bit(BTN_RIGHT, dev->keybit);
__clear_bit(BTN_MIDDLE, dev->keybit);
/*
* Now set up our capabilities.
*/
__set_bit(EV_ABS, dev->evbit);
input_set_abs_params(dev, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
input_mt_init_slots(dev, 5, INPUT_MT_POINTER);
__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
}
static int focaltech_read_register(struct ps2dev *ps2dev, int reg,
unsigned char *param)
{
if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETSCALE11))
return -EIO;
param[0] = 0;
if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
return -EIO;
if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
return -EIO;
if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
return -EIO;
param[0] = reg;
if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
return -EIO;
if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
return -EIO;
return 0;
}
static int focaltech_read_size(struct psmouse *psmouse)
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
struct focaltech_data *priv = psmouse->private;
char param[3];
if (focaltech_read_register(ps2dev, 2, param))
return -EIO;
/* not sure whether this is 100% correct */
priv->x_max = (unsigned char)param[1] * 128;
priv->y_max = (unsigned char)param[2] * 128;
return 0;
}
int focaltech_init(struct psmouse *psmouse)
{
struct focaltech_data *priv;
int error;
psmouse->private = priv = kzalloc(sizeof(struct focaltech_data),
GFP_KERNEL);
if (!priv)
return -ENOMEM;
focaltech_reset(psmouse);
error = focaltech_read_size(psmouse);
if (error) {
psmouse_err(psmouse,
"Unable to read the size of the touchpad\n");
goto fail;
}
error = focaltech_switch_protocol(psmouse);
if (error) {
psmouse_err(psmouse, "Unable to initialize the device\n");
goto fail;
}
focaltech_set_input_params(psmouse);
psmouse->protocol_handler = focaltech_process_byte;
psmouse->pktsize = 6;
psmouse->disconnect = focaltech_disconnect;
psmouse->reconnect = focaltech_reconnect;
psmouse->cleanup = focaltech_reset;
/* resync is not supported yet */
psmouse->resync_time = 0;
return 0;
fail:
focaltech_reset(psmouse);
kfree(priv);
return error;
}
bool focaltech_supported(void)
{
return true;
}
#else /* CONFIG_MOUSE_PS2_FOCALTECH */
int focaltech_init(struct psmouse *psmouse)
{
focaltech_reset(psmouse);
return 0;
}
bool focaltech_supported(void)
{
return false;
}
#endif /* CONFIG_MOUSE_PS2_FOCALTECH */
drivers/input/mouse/focaltech.h
View file @ 718749d5
......@@ -2,6 +2,7 @@
* Focaltech TouchPad PS/2 mouse driver
*
* Copyright (c) 2014 Red Hat Inc.
* Copyright (c) 2014 Mathias Gottschlag <mgottschlag@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
......@@ -18,5 +19,6 @@
int focaltech_detect(struct psmouse *psmouse, bool set_properties);
int focaltech_init(struct psmouse *psmouse);
bool focaltech_supported(void);
#endif
drivers/input/mouse/psmouse-base.c
View file @ 718749d5
......@@ -725,16 +725,19 @@ static int psmouse_extensions(struct psmouse *psmouse,
/* Always check for focaltech, this is safe as it uses pnp-id matching */
if (psmouse_do_detect(focaltech_detect, psmouse, set_properties) == 0) {
if (!set_properties || focaltech_init(psmouse) == 0) {
/*
* Not supported yet, use bare protocol.
* Note that we need to also restrict
* psmouse_max_proto so that psmouse_initialize()
* does not try to reset rate and resolution,
* because even that upsets the device.
*/
psmouse_max_proto = PSMOUSE_PS2;
return PSMOUSE_PS2;
if (max_proto > PSMOUSE_IMEX) {
if (!set_properties || focaltech_init(psmouse) == 0) {
if (focaltech_supported())
return PSMOUSE_FOCALTECH;
/*
* Note that we need to also restrict
* psmouse_max_proto so that psmouse_initialize()
* does not try to reset rate and resolution,
* because even that upsets the device.
*/
psmouse_max_proto = PSMOUSE_PS2;
return PSMOUSE_PS2;
}
}
}
......@@ -1063,6 +1066,15 @@ static const struct psmouse_protocol psmouse_protocols[] = {
.alias = "cortps",
.detect = cortron_detect,
},
#ifdef CONFIG_MOUSE_PS2_FOCALTECH
{
.type = PSMOUSE_FOCALTECH,
.name = "FocalTechPS/2",
.alias = "focaltech",
.detect = focaltech_detect,
.init = focaltech_init,
},
#endif
{
.type = PSMOUSE_AUTO,
.name = "auto",
......
drivers/input/mouse/psmouse.h
View file @ 718749d5
......@@ -96,6 +96,7 @@ enum psmouse_type {
PSMOUSE_FSP,
PSMOUSE_SYNAPTICS_RELATIVE,
PSMOUSE_CYPRESS,
PSMOUSE_FOCALTECH,
PSMOUSE_AUTO /* This one should always be last */
};
......
drivers/input/mouse/synaptics.c
View file @ 718749d5
......@@ -67,6 +67,9 @@
#define X_MAX_POSITIVE 8176
#define Y_MAX_POSITIVE 8176
/* maximum ABS_MT_POSITION displacement (in mm) */
#define DMAX 10
/*****************************************************************************
* Stuff we need even when we do not want native Synaptics support
****************************************************************************/
......@@ -575,14 +578,6 @@ static void synaptics_pt_create(struct psmouse *psmouse)
* Functions to interpret the absolute mode packets
****************************************************************************/
static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
int sgm, int agm)
{
state->count = count;
state->sgm = sgm;
state->agm = agm;
}
static void synaptics_parse_agm(const unsigned char buf[],
struct synaptics_data *priv,
struct synaptics_hw_state *hw)
......@@ -601,16 +596,13 @@ static void synaptics_parse_agm(const unsigned char buf[],
break;
case 2:
/* AGM-CONTACT packet: (count, sgm, agm) */
synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
/* AGM-CONTACT packet: we are only interested in the count */
priv->agm_count = buf[1];
break;
default:
break;
}
/* Record that at least one AGM has been received since last SGM */
priv->agm_pending = true;
}
static bool is_forcepad;
......@@ -804,424 +796,68 @@ static void synaptics_report_buttons(struct psmouse *psmouse,
input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
}
static void synaptics_report_slot(struct input_dev *dev, int slot,
const struct synaptics_hw_state *hw)
{
input_mt_slot(dev, slot);
input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
if (!hw)
return;
input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
}
static void synaptics_report_mt_data(struct psmouse *psmouse,
struct synaptics_mt_state *mt_state,
const struct synaptics_hw_state *sgm)
const struct synaptics_hw_state *sgm,
int num_fingers)
{
struct input_dev *dev = psmouse->dev;
struct synaptics_data *priv = psmouse->private;
struct synaptics_hw_state *agm = &priv->agm;
struct synaptics_mt_state *old = &priv->mt_state;
const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
struct input_mt_pos pos[2];
int slot[2], nsemi, i;
switch (mt_state->count) {
case 0:
synaptics_report_slot(dev, 0, NULL);
synaptics_report_slot(dev, 1, NULL);
break;
case 1:
if (mt_state->sgm == -1) {
synaptics_report_slot(dev, 0, NULL);
synaptics_report_slot(dev, 1, NULL);
} else if (mt_state->sgm == 0) {
synaptics_report_slot(dev, 0, sgm);
synaptics_report_slot(dev, 1, NULL);
} else {
synaptics_report_slot(dev, 0, NULL);
synaptics_report_slot(dev, 1, sgm);
}
break;
default:
/*
* If the finger slot contained in SGM is valid, and either
* hasn't changed, or is new, or the old SGM has now moved to
* AGM, then report SGM in MTB slot 0.
* Otherwise, empty MTB slot 0.
*/
if (mt_state->sgm != -1 &&
(mt_state->sgm == old->sgm ||
old->sgm == -1 || mt_state->agm == old->sgm))
synaptics_report_slot(dev, 0, sgm);
else
synaptics_report_slot(dev, 0, NULL);
nsemi = clamp_val(num_fingers, 0, 2);
/*
* If the finger slot contained in AGM is valid, and either
* hasn't changed, or is new, then report AGM in MTB slot 1.
* Otherwise, empty MTB slot 1.
*
* However, in the case where the AGM is new, make sure that
* that it is either the same as the old SGM, or there was no
* SGM.
*
* Otherwise, if the SGM was just 1, and the new AGM is 2, then
* the new AGM will keep the old SGM's tracking ID, which can
* cause apparent drumroll. This happens if in the following
* valid finger sequence:
*
* Action SGM AGM (MTB slot:Contact)
* 1. Touch contact 0 (0:0)
* 2. Touch contact 1 (0:0, 1:1)
* 3. Lift contact 0 (1:1)
* 4. Touch contacts 2,3 (0:2, 1:3)
*
* In step 4, contact 3, in AGM must not be given the same
* tracking ID as contact 1 had in step 3. To avoid this,
* the first agm with contact 3 is dropped and slot 1 is
* invalidated (tracking ID = -1).
*/
if (mt_state->agm != -1 &&
(mt_state->agm == old->agm ||
(old->agm == -1 &&
(old->sgm == -1 || mt_state->agm == old->sgm))))
synaptics_report_slot(dev, 1, agm);
else
synaptics_report_slot(dev, 1, NULL);
break;
for (i = 0; i < nsemi; i++) {
pos[i].x = hw[i]->x;
pos[i].y = synaptics_invert_y(hw[i]->y);
}
input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->x_res);
for (i = 0; i < nsemi; i++) {
input_mt_slot(dev, slot[i]);
input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
}
input_mt_drop_unused(dev);
/* Don't use active slot count to generate BTN_TOOL events. */
input_mt_report_pointer_emulation(dev, false);
/* Send the number of fingers reported by touchpad itself. */
input_mt_report_finger_count(dev, mt_state->count);
input_mt_report_finger_count(dev, num_fingers);
synaptics_report_buttons(psmouse, sgm);
input_sync(dev);
}
/* Handle case where mt_state->count = 0 */
static void synaptics_image_sensor_0f(struct synaptics_data *priv,
struct synaptics_mt_state *mt_state)
{
synaptics_mt_state_set(mt_state, 0, -1, -1);
priv->mt_state_lost = false;
}
/* Handle case where mt_state->count = 1 */
static void synaptics_image_sensor_1f(struct synaptics_data *priv,
struct synaptics_mt_state *mt_state)
{
struct synaptics_hw_state *agm = &priv->agm;
struct synaptics_mt_state *old = &priv->mt_state;
/*
* If the last AGM was (0,0,0), and there is only one finger left,
* then we absolutely know that SGM contains slot 0, and all other
* fingers have been removed.
*/
if (priv->agm_pending && agm->z == 0) {
synaptics_mt_state_set(mt_state, 1, 0, -1);
priv->mt_state_lost = false;
return;
}
switch (old->count) {
case 0:
synaptics_mt_state_set(mt_state, 1, 0, -1);
break;
case 1:
/*
* If mt_state_lost, then the previous transition was 3->1,
* and SGM now contains either slot 0 or 1, but we don't know
* which. So, we just assume that the SGM now contains slot 1.
*
* If pending AGM and either:
* (a) the previous SGM slot contains slot 0, or
* (b) there was no SGM slot
* then, the SGM now contains slot 1
*
* Case (a) happens with very rapid "drum roll" gestures, where
* slot 0 finger is lifted and a new slot 1 finger touches
* within one reporting interval.
*
* Case (b) happens if initially two or more fingers tap
* briefly, and all but one lift before the end of the first
* reporting interval.
*
* (In both these cases, slot 0 will becomes empty, so SGM
* contains slot 1 with the new finger)
*
* Else, if there was no previous SGM, it now contains slot 0.
*
* Otherwise, SGM still contains the same slot.
*/
if (priv->mt_state_lost ||
(priv->agm_pending && old->sgm <= 0))
synaptics_mt_state_set(mt_state, 1, 1, -1);
else if (old->sgm == -1)
synaptics_mt_state_set(mt_state, 1, 0, -1);
break;
case 2:
/*
* If mt_state_lost, we don't know which finger SGM contains.
*
* So, report 1 finger, but with both slots empty.
* We will use slot 1 on subsequent 1->1
*/
if (priv->mt_state_lost) {
synaptics_mt_state_set(mt_state, 1, -1, -1);
break;
}
/*
* Since the last AGM was NOT (0,0,0), it was the finger in
* slot 0 that has been removed.
* So, SGM now contains previous AGM's slot, and AGM is now
* empty.
*/
synaptics_mt_state_set(mt_state, 1, old->agm, -1);
break;
case 3:
/*
* Since last AGM was not (0,0,0), we don't know which finger
* is left.
*
* So, report 1 finger, but with both slots empty.
* We will use slot 1 on subsequent 1->1
*/
synaptics_mt_state_set(mt_state, 1, -1, -1);
priv->mt_state_lost = true;
break;
case 4:
case 5:
/* mt_state was updated by AGM-CONTACT packet */
break;
}
}
/* Handle case where mt_state->count = 2 */
static void synaptics_image_sensor_2f(struct synaptics_data *priv,
struct synaptics_mt_state *mt_state)
{
struct synaptics_mt_state *old = &priv->mt_state;
switch (old->count) {
case 0:
synaptics_mt_state_set(mt_state, 2, 0, 1);
break;
case 1:
/*
* If previous SGM contained slot 1 or higher, SGM now contains
* slot 0 (the newly touching finger) and AGM contains SGM's
* previous slot.
*
* Otherwise, SGM still contains slot 0 and AGM now contains
* slot 1.
*/
if (old->sgm >= 1)
synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
else
synaptics_mt_state_set(mt_state, 2, 0, 1);
break;
case 2:
/*
* If mt_state_lost, SGM now contains either finger 1 or 2, but
* we don't know which.
* So, we just assume that the SGM contains slot 0 and AGM 1.
*/
if (priv->mt_state_lost)
synaptics_mt_state_set(mt_state, 2, 0, 1);
/*
* Otherwise, use the same mt_state, since it either hasn't
* changed, or was updated by a recently received AGM-CONTACT
* packet.
*/
break;
case 3:
/*
* 3->2 transitions have two unsolvable problems:
* 1) no indication is given which finger was removed
* 2) no way to tell if agm packet was for finger 3
* before 3->2, or finger 2 after 3->2.
*
* So, report 2 fingers, but empty all slots.
* We will guess slots [0,1] on subsequent 2->2.
*/
synaptics_mt_state_set(mt_state, 2, -1, -1);
priv->mt_state_lost = true;
break;
case 4:
case 5:
/* mt_state was updated by AGM-CONTACT packet */
break;
}
}
/* Handle case where mt_state->count = 3 */
static void synaptics_image_sensor_3f(struct synaptics_data *priv,
struct synaptics_mt_state *mt_state)
{
struct synaptics_mt_state *old = &priv->mt_state;
switch (old->count) {
case 0:
synaptics_mt_state_set(mt_state, 3, 0, 2);
break;
case 1:
/*
* If previous SGM contained slot 2 or higher, SGM now contains
* slot 0 (one of the newly touching fingers) and AGM contains
* SGM's previous slot.
*
* Otherwise, SGM now contains slot 0 and AGM contains slot 2.
*/
if (old->sgm >= 2)
synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
else
synaptics_mt_state_set(mt_state, 3, 0, 2);
break;
case 2:
/*
* If the AGM previously contained slot 3 or higher, then the
* newly touching finger is in the lowest available slot.
*
* If SGM was previously 1 or higher, then the new SGM is
* now slot 0 (with a new finger), otherwise, the new finger
* is now in a hidden slot between 0 and AGM's slot.
*
* In all such cases, the SGM now contains slot 0, and the AGM
* continues to contain the same slot as before.
*/
if (old->agm >= 3) {
synaptics_mt_state_set(mt_state, 3, 0, old->agm);
break;
}
/*
* After some 3->1 and all 3->2 transitions, we lose track
* of which slot is reported by SGM and AGM.
*
* For 2->3 in this state, report 3 fingers, but empty all
* slots, and we will guess (0,2) on a subsequent 0->3.
*
* To userspace, the resulting transition will look like:
* 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
*/
if (priv->mt_state_lost) {
synaptics_mt_state_set(mt_state, 3, -1, -1);
break;
}
/*
* If the (SGM,AGM) really previously contained slots (0, 1),
* then we cannot know what slot was just reported by the AGM,
* because the 2->3 transition can occur either before or after
* the AGM packet. Thus, this most recent AGM could contain
* either the same old slot 1 or the new slot 2.
* Subsequent AGMs will be reporting slot 2.
*
* To userspace, the resulting transition will look like:
* 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
*/
synaptics_mt_state_set(mt_state, 3, 0, -1);
break;
case 3:
/*
* If, for whatever reason, the previous agm was invalid,
* Assume SGM now contains slot 0, AGM now contains slot 2.
*/
if (old->agm <= 2)
synaptics_mt_state_set(mt_state, 3, 0, 2);
/*
* mt_state either hasn't changed, or was updated by a recently
* received AGM-CONTACT packet.
*/
break;
case 4:
case 5:
/* mt_state was updated by AGM-CONTACT packet */
break;
}
}
/* Handle case where mt_state->count = 4, or = 5 */
static void synaptics_image_sensor_45f(struct synaptics_data *priv,
struct synaptics_mt_state *mt_state)
{
/* mt_state was updated correctly by AGM-CONTACT packet */
priv->mt_state_lost = false;
}
static void synaptics_image_sensor_process(struct psmouse *psmouse,
struct synaptics_hw_state *sgm)
{
struct synaptics_data *priv = psmouse->private;
struct synaptics_hw_state *agm = &priv->agm;
struct synaptics_mt_state mt_state;
/* Initialize using current mt_state (as updated by last agm) */
mt_state = agm->mt_state;
int num_fingers;
/*
* Update mt_state using the new finger count and current mt_state.
*/
if (sgm->z == 0)
synaptics_image_sensor_0f(priv, &mt_state);
num_fingers = 0;
else if (sgm->w >= 4)
synaptics_image_sensor_1f(priv, &mt_state);
num_fingers = 1;
else if (sgm->w == 0)
synaptics_image_sensor_2f(priv, &mt_state);
else if (sgm->w == 1 && mt_state.count <= 3)
synaptics_image_sensor_3f(priv, &mt_state);
num_fingers = 2;
else if (sgm->w == 1)
num_fingers = priv->agm_count ? priv->agm_count : 3;
else
synaptics_image_sensor_45f(priv, &mt_state);
num_fingers = 4;
/* Send resulting input events to user space */
synaptics_report_mt_data(psmouse, &mt_state, sgm);
/* Store updated mt_state */
priv->mt_state = agm->mt_state = mt_state;
priv->agm_pending = false;
}
static void synaptics_profile_sensor_process(struct psmouse *psmouse,
struct synaptics_hw_state *sgm,
int num_fingers)
{
struct input_dev *dev = psmouse->dev;
struct synaptics_data *priv = psmouse->private;
struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
struct input_mt_pos pos[2];
int slot[2], nsemi, i;
nsemi = clamp_val(num_fingers, 0, 2);
for (i = 0; i < nsemi; i++) {
pos[i].x = hw[i]->x;
pos[i].y = synaptics_invert_y(hw[i]->y);
}
input_mt_assign_slots(dev, slot, pos, nsemi);
for (i = 0; i < nsemi; i++) {
input_mt_slot(dev, slot[i]);
input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
}
input_mt_drop_unused(dev);
input_mt_report_pointer_emulation(dev, false);
input_mt_report_finger_count(dev, num_fingers);
synaptics_report_buttons(psmouse, sgm);
input_sync(dev);
synaptics_report_mt_data(psmouse, sgm, num_fingers);
}
/*
......@@ -1288,7 +924,7 @@ static void synaptics_process_packet(struct psmouse *psmouse)
}
if (cr48_profile_sensor) {
synaptics_profile_sensor_process(psmouse, &hw, num_fingers);
synaptics_report_mt_data(psmouse, &hw, num_fingers);
return;
}
......@@ -1445,7 +1081,7 @@ static void set_input_params(struct psmouse *psmouse,
ABS_MT_POSITION_Y);
/* Image sensors can report per-contact pressure */
input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
input_mt_init_slots(dev, 2, INPUT_MT_POINTER);
input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK);
/* Image sensors can signal 4 and 5 finger clicks */
__set_bit(BTN_TOOL_QUADTAP, dev->keybit);
......
drivers/input/mouse/synaptics.h
View file @ 718749d5
......@@ -118,16 +118,6 @@
/* amount to fuzz position data when touchpad reports reduced filtering */
#define SYN_REDUCED_FILTER_FUZZ 8
/*
* A structure to describe which internal touchpad finger slots are being
* reported in raw packets.
*/
struct synaptics_mt_state {
int count; /* num fingers being tracked */
int sgm; /* which slot is reported by sgm pkt */
int agm; /* which slot is reported by agm pkt*/
};
/*
* A structure to describe the state of the touchpad hardware (buttons and pad)
*/
......@@ -143,9 +133,6 @@ struct synaptics_hw_state {
unsigned int down:1;
unsigned char ext_buttons;
signed char scroll;
/* As reported in last AGM-CONTACT packets */
struct synaptics_mt_state mt_state;
};
struct synaptics_data {
......@@ -170,15 +157,12 @@ struct synaptics_data {
struct serio *pt_port; /* Pass-through serio port */
struct synaptics_mt_state mt_state; /* Current mt finger state */
bool mt_state_lost; /* mt_state may be incorrect */
/*
* Last received Advanced Gesture Mode (AGM) packet. An AGM packet
* contains position data for a second contact, at half resolution.
*/
struct synaptics_hw_state agm;
bool agm_pending; /* new AGM packet received */
unsigned int agm_count; /* finger count reported by agm */
/* ForcePad handling */
unsigned long press_start;
......
drivers/input/serio/Kconfig
View file @ 718749d5
......@@ -281,4 +281,14 @@ config HYPERV_KEYBOARD
To compile this driver as a module, choose M here: the module will
be called hyperv_keyboard.
config SERIO_SUN4I_PS2
tristate "Allwinner A10 PS/2 controller support"
depends on ARCH_SUNXI || COMPILE_TEST
help
This selects support for the PS/2 Host Controller on
Allwinner A10.
To compile this driver as a module, choose M here: the
module will be called sun4i-ps2.
endif
drivers/input/serio/Makefile
View file @ 718749d5
......@@ -29,3 +29,4 @@ obj-$(CONFIG_SERIO_ARC_PS2) += arc_ps2.o
obj-$(CONFIG_SERIO_APBPS2) += apbps2.o
obj-$(CONFIG_SERIO_OLPC_APSP) += olpc_apsp.o
obj-$(CONFIG_HYPERV_KEYBOARD) += hyperv-keyboard.o
obj-$(CONFIG_SERIO_SUN4I_PS2) += sun4i-ps2.o
drivers/input/serio/gscps2.c
View file @ 718749d5
......@@ -40,7 +40,6 @@
MODULE_AUTHOR("Laurent Canet <canetl@esiee.fr>, Thibaut Varene <varenet@parisc-linux.org>, Helge Deller <deller@gmx.de>");
MODULE_DESCRIPTION("HP GSC PS2 port driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(parisc, gscps2_device_tbl);
#define PFX "gscps2.c: "
......@@ -439,6 +438,7 @@ static struct parisc_device_id gscps2_device_tbl[] = {
#endif
{ 0, } /* 0 terminated list */
};
MODULE_DEVICE_TABLE(parisc, gscps2_device_tbl);
static struct parisc_driver parisc_ps2_driver = {
.name = "gsc_ps2",
......
drivers/input/serio/sun4i-ps2.c 0 → 100644
View file @ 718749d5
/*
* Driver for Allwinner A10 PS2 host controller
*
* Author: Vishnu Patekar <vishnupatekar0510@gmail.com>
* Aaron.maoye <leafy.myeh@newbietech.com>
*/
#include <linux/module.h>
#include <linux/serio.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#define DRIVER_NAME "sun4i-ps2"
/* register offset definitions */
#define PS2_REG_GCTL 0x00 /* PS2 Module Global Control Reg */
#define PS2_REG_DATA 0x04 /* PS2 Module Data Reg */
#define PS2_REG_LCTL 0x08 /* PS2 Module Line Control Reg */
#define PS2_REG_LSTS 0x0C /* PS2 Module Line Status Reg */
#define PS2_REG_FCTL 0x10 /* PS2 Module FIFO Control Reg */
#define PS2_REG_FSTS 0x14 /* PS2 Module FIFO Status Reg */
#define PS2_REG_CLKDR 0x18 /* PS2 Module Clock Divider Reg*/
/* PS2 GLOBAL CONTROL REGISTER PS2_GCTL */
#define PS2_GCTL_INTFLAG BIT(4)
#define PS2_GCTL_INTEN BIT(3)
#define PS2_GCTL_RESET BIT(2)
#define PS2_GCTL_MASTER BIT(1)
#define PS2_GCTL_BUSEN BIT(0)
/* PS2 LINE CONTROL REGISTER */
#define PS2_LCTL_NOACK BIT(18)
#define PS2_LCTL_TXDTOEN BIT(8)
#define PS2_LCTL_STOPERREN BIT(3)
#define PS2_LCTL_ACKERREN BIT(2)
#define PS2_LCTL_PARERREN BIT(1)
#define PS2_LCTL_RXDTOEN BIT(0)
/* PS2 LINE STATUS REGISTER */
#define PS2_LSTS_TXTDO BIT(8)
#define PS2_LSTS_STOPERR BIT(3)
#define PS2_LSTS_ACKERR BIT(2)
#define PS2_LSTS_PARERR BIT(1)
#define PS2_LSTS_RXTDO BIT(0)
#define PS2_LINE_ERROR_BIT \
(PS2_LSTS_TXTDO | PS2_LSTS_STOPERR | PS2_LSTS_ACKERR | \
PS2_LSTS_PARERR | PS2_LSTS_RXTDO)
/* PS2 FIFO CONTROL REGISTER */
#define PS2_FCTL_TXRST BIT(17)
#define PS2_FCTL_RXRST BIT(16)
#define PS2_FCTL_TXUFIEN BIT(10)
#define PS2_FCTL_TXOFIEN BIT(9)
#define PS2_FCTL_TXRDYIEN BIT(8)
#define PS2_FCTL_RXUFIEN BIT(2)
#define PS2_FCTL_RXOFIEN BIT(1)
#define PS2_FCTL_RXRDYIEN BIT(0)
/* PS2 FIFO STATUS REGISTER */
#define PS2_FSTS_TXUF BIT(10)
#define PS2_FSTS_TXOF BIT(9)
#define PS2_FSTS_TXRDY BIT(8)
#define PS2_FSTS_RXUF BIT(2)
#define PS2_FSTS_RXOF BIT(1)
#define PS2_FSTS_RXRDY BIT(0)
#define PS2_FIFO_ERROR_BIT \
(PS2_FSTS_TXUF | PS2_FSTS_TXOF | PS2_FSTS_RXUF | PS2_FSTS_RXOF)
#define PS2_SAMPLE_CLK 1000000
#define PS2_SCLK 125000
struct sun4i_ps2data {
struct serio *serio;
struct device *dev;
/* IO mapping base */
void __iomem *reg_base;
/* clock management */
struct clk *clk;
/* irq */
spinlock_t lock;
int irq;
};
static irqreturn_t sun4i_ps2_interrupt(int irq, void *dev_id)
{
struct sun4i_ps2data *drvdata = dev_id;
u32 intr_status;
u32 fifo_status;
unsigned char byte;
unsigned int rxflags = 0;
u32 rval;
spin_lock(&drvdata->lock);
/* Get the PS/2 interrupts and clear them */
intr_status = readl(drvdata->reg_base + PS2_REG_LSTS);
fifo_status = readl(drvdata->reg_base + PS2_REG_FSTS);
/* Check line status register */
if (intr_status & PS2_LINE_ERROR_BIT) {
rxflags = (intr_status & PS2_LINE_ERROR_BIT) ? SERIO_FRAME : 0;
rxflags |= (intr_status & PS2_LSTS_PARERR) ? SERIO_PARITY : 0;
rxflags |= (intr_status & PS2_LSTS_PARERR) ? SERIO_TIMEOUT : 0;
rval = PS2_LSTS_TXTDO | PS2_LSTS_STOPERR | PS2_LSTS_ACKERR |
PS2_LSTS_PARERR | PS2_LSTS_RXTDO;
writel(rval, drvdata->reg_base + PS2_REG_LSTS);
}
/* Check FIFO status register */
if (fifo_status & PS2_FIFO_ERROR_BIT) {
rval = PS2_FSTS_TXUF | PS2_FSTS_TXOF | PS2_FSTS_TXRDY |
PS2_FSTS_RXUF | PS2_FSTS_RXOF | PS2_FSTS_RXRDY;
writel(rval, drvdata->reg_base + PS2_REG_FSTS);
}
rval = (fifo_status >> 16) & 0x3;
while (rval--) {
byte = readl(drvdata->reg_base + PS2_REG_DATA) & 0xff;
serio_interrupt(drvdata->serio, byte, rxflags);
}
writel(intr_status, drvdata->reg_base + PS2_REG_LSTS);
writel(fifo_status, drvdata->reg_base + PS2_REG_FSTS);
spin_unlock(&drvdata->lock);
return IRQ_HANDLED;
}
static int sun4i_ps2_open(struct serio *serio)
{
struct sun4i_ps2data *drvdata = serio->port_data;
u32 src_clk = 0;
u32 clk_scdf;
u32 clk_pcdf;
u32 rval;
unsigned long flags;
/* Set line control and enable interrupt */
rval = PS2_LCTL_STOPERREN | PS2_LCTL_ACKERREN
| PS2_LCTL_PARERREN | PS2_LCTL_RXDTOEN;
writel(rval, drvdata->reg_base + PS2_REG_LCTL);
/* Reset FIFO */
rval = PS2_FCTL_TXRST | PS2_FCTL_RXRST | PS2_FCTL_TXUFIEN
| PS2_FCTL_TXOFIEN | PS2_FCTL_RXUFIEN
| PS2_FCTL_RXOFIEN | PS2_FCTL_RXRDYIEN;
writel(rval, drvdata->reg_base + PS2_REG_FCTL);
src_clk = clk_get_rate(drvdata->clk);
/* Set clock divider register */
clk_scdf = src_clk / PS2_SAMPLE_CLK - 1;
clk_pcdf = PS2_SAMPLE_CLK / PS2_SCLK - 1;
rval = (clk_scdf << 8) | clk_pcdf;
writel(rval, drvdata->reg_base + PS2_REG_CLKDR);
/* Set global control register */
rval = PS2_GCTL_RESET | PS2_GCTL_INTEN | PS2_GCTL_MASTER
| PS2_GCTL_BUSEN;
spin_lock_irqsave(&drvdata->lock, flags);
writel(rval, drvdata->reg_base + PS2_REG_GCTL);
spin_unlock_irqrestore(&drvdata->lock, flags);
return 0;
}
static void sun4i_ps2_close(struct serio *serio)
{
struct sun4i_ps2data *drvdata = serio->port_data;
u32 rval;
/* Shut off the interrupt */
rval = readl(drvdata->reg_base + PS2_REG_GCTL);
writel(rval & ~(PS2_GCTL_INTEN), drvdata->reg_base + PS2_REG_GCTL);
synchronize_irq(drvdata->irq);
}
static int sun4i_ps2_write(struct serio *serio, unsigned char val)
{
unsigned long expire = jiffies + msecs_to_jiffies(10000);
struct sun4i_ps2data *drvdata = serio->port_data;
do {
if (readl(drvdata->reg_base + PS2_REG_FSTS) & PS2_FSTS_TXRDY) {
writel(val, drvdata->reg_base + PS2_REG_DATA);
return 0;
}
} while (time_before(jiffies, expire));
return SERIO_TIMEOUT;
}
static int sun4i_ps2_probe(struct platform_device *pdev)
{
struct resource *res; /* IO mem resources */
struct sun4i_ps2data *drvdata;
struct serio *serio;
struct device *dev = &pdev->dev;
unsigned int irq;
int error;
drvdata = kzalloc(sizeof(struct sun4i_ps2data), GFP_KERNEL);
serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
if (!drvdata || !serio) {
error = -ENOMEM;
goto err_free_mem;
}
spin_lock_init(&drvdata->lock);
/* IO */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "failed to locate registers\n");
error = -ENXIO;
goto err_free_mem;
}
drvdata->reg_base = ioremap(res->start, resource_size(res));
if (!drvdata->reg_base) {
dev_err(dev, "failed to map registers\n");
error = -ENOMEM;
goto err_free_mem;
}
drvdata->clk = clk_get(dev, NULL);
if (IS_ERR(drvdata->clk)) {
error = PTR_ERR(drvdata->clk);
dev_err(dev, "couldn't get clock %d\n", error);
goto err_ioremap;
}
error = clk_prepare_enable(drvdata->clk);
if (error) {
dev_err(dev, "failed to enable clock %d\n", error);
goto err_clk;
}
serio->id.type = SERIO_8042;
serio->write = sun4i_ps2_write;
serio->open = sun4i_ps2_open;
serio->close = sun4i_ps2_close;
serio->port_data = drvdata;
serio->dev.parent = dev;
strlcpy(serio->name, dev_name(dev), sizeof(serio->name));
strlcpy(serio->phys, dev_name(dev), sizeof(serio->phys));
/* shutoff interrupt */
writel(0, drvdata->reg_base + PS2_REG_GCTL);
/* Get IRQ for the device */
irq = platform_get_irq(pdev, 0);
if (!irq) {
dev_err(dev, "no IRQ found\n");
error = -ENXIO;
goto err_disable_clk;
}
drvdata->irq = irq;
drvdata->serio = serio;
drvdata->dev = dev;
error = request_irq(drvdata->irq, sun4i_ps2_interrupt, 0,
DRIVER_NAME, drvdata);
if (error) {
dev_err(drvdata->dev, "failed to allocate interrupt %d: %d\n",
drvdata->irq, error);
goto err_disable_clk;
}
serio_register_port(serio);
platform_set_drvdata(pdev, drvdata);
return 0; /* success */
err_disable_clk:
clk_disable_unprepare(drvdata->clk);
err_clk:
clk_put(drvdata->clk);
err_ioremap:
iounmap(drvdata->reg_base);
err_free_mem:
kfree(serio);
kfree(drvdata);
return error;
}
static int sun4i_ps2_remove(struct platform_device *pdev)
{
struct sun4i_ps2data *drvdata = platform_get_drvdata(pdev);
serio_unregister_port(drvdata->serio);
free_irq(drvdata->irq, drvdata);
clk_disable_unprepare(drvdata->clk);
clk_put(drvdata->clk);
iounmap(drvdata->reg_base);
kfree(drvdata);
return 0;
}
static const struct of_device_id sun4i_ps2_match[] = {
{ .compatible = "allwinner,sun4i-a10-ps2", },
{ },
};
MODULE_DEVICE_TABLE(of, sun4i_ps2_match);
static struct platform_driver sun4i_ps2_driver = {
.probe = sun4i_ps2_probe,
.remove = sun4i_ps2_remove,
.driver = {
.name = DRIVER_NAME,
.of_match_table = sun4i_ps2_match,
},
};
module_platform_driver(sun4i_ps2_driver);
MODULE_AUTHOR("Vishnu Patekar <vishnupatekar0510@gmail.com>");
MODULE_AUTHOR("Aaron.maoye <leafy.myeh@newbietech.com>");
MODULE_DESCRIPTION("Allwinner A10/Sun4i PS/2 driver");
MODULE_LICENSE("GPL v2");
drivers/input/tablet/gtco.c
View file @ 718749d5
......@@ -59,7 +59,7 @@ Scott Hill shill@gtcocalcomp.com
#include <asm/uaccess.h>
#include <asm/unaligned.h>
#include <asm/byteorder.h>
#include <linux/bitops.h>
#include <linux/usb/input.h>
......@@ -614,7 +614,6 @@ static void gtco_urb_callback(struct urb *urbinfo)
struct input_dev *inputdev;
int rc;
u32 val = 0;
s8 valsigned = 0;
char le_buffer[2];
inputdev = device->inputdevice;
......@@ -665,20 +664,11 @@ static void gtco_urb_callback(struct urb *urbinfo)
/* Fall thru */
case 4:
/* Tilt */
input_report_abs(inputdev, ABS_TILT_X,
sign_extend32(device->buffer[6], 6));
/* Sign extend these 7 bit numbers. */
if (device->buffer[6] & 0x40)
device->buffer[6] |= 0x80;
if (device->buffer[7] & 0x40)
device->buffer[7] |= 0x80;
valsigned = (device->buffer[6]);
input_report_abs(inputdev, ABS_TILT_X, (s32)valsigned);
valsigned = (device->buffer[7]);
input_report_abs(inputdev, ABS_TILT_Y, (s32)valsigned);
input_report_abs(inputdev, ABS_TILT_Y,
sign_extend32(device->buffer[7], 6));
/* Fall thru */
case 2:
......
drivers/input/touchscreen/elants_i2c.c
View file @ 718749d5
......@@ -33,10 +33,8 @@
#include <linux/delay.h>
#include <linux/uaccess.h>
#include <linux/buffer_head.h>
#include <linux/version.h>
#include <linux/slab.h>
#include <linux/firmware.h>
#include <linux/version.h>
#include <linux/input/mt.h>
#include <linux/acpi.h>
#include <linux/of.h>
......
drivers/input/touchscreen/pixcir_i2c_ts.c
View file @ 718749d5
......@@ -126,7 +126,7 @@ static void pixcir_ts_report(struct pixcir_i2c_ts_data *ts,
pos[i].y = touch->y;
}
input_mt_assign_slots(ts->input, slots, pos, n);
input_mt_assign_slots(ts->input, slots, pos, n, 0);
}
for (i = 0; i < n; i++) {
......
drivers/input/touchscreen/sun4i-ts.c
View file @ 718749d5
......@@ -34,6 +34,7 @@
#include <linux/err.h>
#include <linux/hwmon.h>
#include <linux/thermal.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/interrupt.h>
......@@ -71,6 +72,9 @@
#define TP_ADC_SELECT(x) ((x) << 3)
#define ADC_CHAN_SELECT(x) ((x) << 0) /* 3 bits */
/* on sun6i, bits 3~6 are left shifted by 1 to 4~7 */
#define SUN6I_TP_MODE_EN(x) ((x) << 5)
/* TP_CTRL2 bits */
#define TP_SENSITIVE_ADJUST(x) ((x) << 28) /* 4 bits */
#define TP_MODE_SELECT(x) ((x) << 26) /* 2 bits */
......@@ -107,10 +111,13 @@
struct sun4i_ts_data {
struct device *dev;
struct input_dev *input;
struct thermal_zone_device *tz;
void __iomem *base;
unsigned int irq;
bool ignore_fifo_data;
int temp_data;
int temp_offset;
int temp_step;
};
static void sun4i_ts_irq_handle_input(struct sun4i_ts_data *ts, u32 reg_val)
......@@ -180,16 +187,38 @@ static void sun4i_ts_close(struct input_dev *dev)
writel(TEMP_IRQ_EN(1), ts->base + TP_INT_FIFOC);
}
static int sun4i_get_temp(const struct sun4i_ts_data *ts, long *temp)
{
/* No temp_data until the first irq */
if (ts->temp_data == -1)
return -EAGAIN;
*temp = (ts->temp_data - ts->temp_offset) * ts->temp_step;
return 0;
}
static int sun4i_get_tz_temp(void *data, long *temp)
{
return sun4i_get_temp(data, temp);
}
static struct thermal_zone_of_device_ops sun4i_ts_tz_ops = {
.get_temp = sun4i_get_tz_temp,
};
static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct sun4i_ts_data *ts = dev_get_drvdata(dev);
long temp;
int error;
/* No temp_data until the first irq */
if (ts->temp_data == -1)
return -EAGAIN;
error = sun4i_get_temp(ts, &temp);
if (error)
return error;
return sprintf(buf, "%d\n", (ts->temp_data - 1447) * 100);
return sprintf(buf, "%ld\n", temp);
}
static ssize_t show_temp_label(struct device *dev,
......@@ -215,6 +244,7 @@ static int sun4i_ts_probe(struct platform_device *pdev)
struct device_node *np = dev->of_node;
struct device *hwmon;
int error;
u32 reg;
bool ts_attached;
ts = devm_kzalloc(dev, sizeof(struct sun4i_ts_data), GFP_KERNEL);
......@@ -224,6 +254,25 @@ static int sun4i_ts_probe(struct platform_device *pdev)
ts->dev = dev;
ts->ignore_fifo_data = true;
ts->temp_data = -1;
if (of_device_is_compatible(np, "allwinner,sun6i-a31-ts")) {
/* Allwinner SDK has temperature = -271 + (value / 6) (C) */
ts->temp_offset = 1626;
ts->temp_step = 167;
} else {
/*
* The user manuals do not contain the formula for calculating
* the temperature. The formula used here is from the AXP209,
* which is designed by X-Powers, an affiliate of Allwinner:
*
* temperature = -144.7 + (value * 0.1)
*
* Allwinner does not have any documentation whatsoever for
* this hardware. Moreover, it is claimed that the sensor
* is inaccurate and cannot work properly.
*/
ts->temp_offset = 1447;
ts->temp_step = 100;
}
ts_attached = of_property_read_bool(np, "allwinner,ts-attached");
if (ts_attached) {
......@@ -280,20 +329,34 @@ static int sun4i_ts_probe(struct platform_device *pdev)
* Set stylus up debounce to aprox 10 ms, enable debounce, and
* finally enable tp mode.
*/
writel(STYLUS_UP_DEBOUN(5) | STYLUS_UP_DEBOUN_EN(1) | TP_MODE_EN(1),
ts->base + TP_CTRL1);
reg = STYLUS_UP_DEBOUN(5) | STYLUS_UP_DEBOUN_EN(1);
if (of_device_is_compatible(np, "allwinner,sun4i-a10-ts"))
reg |= TP_MODE_EN(1);
else
reg |= SUN6I_TP_MODE_EN(1);
writel(reg, ts->base + TP_CTRL1);
/*
* The thermal core does not register hwmon devices for DT-based
* thermal zone sensors, such as this one.
*/
hwmon = devm_hwmon_device_register_with_groups(ts->dev, "sun4i_ts",
ts, sun4i_ts_groups);
if (IS_ERR(hwmon))
return PTR_ERR(hwmon);
ts->tz = thermal_zone_of_sensor_register(ts->dev, 0, ts,
&sun4i_ts_tz_ops);
if (IS_ERR(ts->tz))
ts->tz = NULL;
writel(TEMP_IRQ_EN(1), ts->base + TP_INT_FIFOC);
if (ts_attached) {
error = input_register_device(ts->input);
if (error) {
writel(0, ts->base + TP_INT_FIFOC);
thermal_zone_of_sensor_unregister(ts->dev, ts->tz);
return error;
}
}
......@@ -310,6 +373,8 @@ static int sun4i_ts_remove(struct platform_device *pdev)
if (ts->input)
input_unregister_device(ts->input);
thermal_zone_of_sensor_unregister(ts->dev, ts->tz);
/* Deactivate all IRQs */
writel(0, ts->base + TP_INT_FIFOC);
......@@ -318,6 +383,7 @@ static int sun4i_ts_remove(struct platform_device *pdev)
static const struct of_device_id sun4i_ts_of_match[] = {
{ .compatible = "allwinner,sun4i-a10-ts", },
{ .compatible = "allwinner,sun6i-a31-ts", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, sun4i_ts_of_match);
......
drivers/input/touchscreen/ti_am335x_tsc.c
View file @ 718749d5
......@@ -26,6 +26,7 @@
#include <linux/delay.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/sort.h>
#include <linux/mfd/ti_am335x_tscadc.h>
......@@ -52,6 +53,7 @@ struct titsc {
u32 bit_xp, bit_xn, bit_yp, bit_yn;
u32 inp_xp, inp_xn, inp_yp, inp_yn;
u32 step_mask;
u32 charge_delay;
};
static unsigned int titsc_readl(struct titsc *ts, unsigned int reg)
......@@ -121,7 +123,7 @@ static void titsc_step_config(struct titsc *ts_dev)
{
unsigned int config;
int i;
int end_step;
int end_step, first_step, tsc_steps;
u32 stepenable;
config = STEPCONFIG_MODE_HWSYNC |
......@@ -140,9 +142,11 @@ static void titsc_step_config(struct titsc *ts_dev)
break;
}
/* 1 … coordinate_readouts is for X */
end_step = ts_dev->coordinate_readouts;
for (i = 0; i < end_step; i++) {
tsc_steps = ts_dev->coordinate_readouts * 2 + 2;
first_step = TOTAL_STEPS - tsc_steps;
/* Steps 16 to 16-coordinate_readouts is for X */
end_step = first_step + tsc_steps;
for (i = end_step - ts_dev->coordinate_readouts; i < end_step; i++) {
titsc_writel(ts_dev, REG_STEPCONFIG(i), config);
titsc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY);
}
......@@ -164,22 +168,20 @@ static void titsc_step_config(struct titsc *ts_dev)
break;
}
/* coordinate_readouts … coordinate_readouts * 2 is for Y */
end_step = ts_dev->coordinate_readouts * 2;
for (i = ts_dev->coordinate_readouts; i < end_step; i++) {
/* 1 ... coordinate_readouts is for Y */
end_step = first_step + ts_dev->coordinate_readouts;
for (i = first_step; i < end_step; i++) {
titsc_writel(ts_dev, REG_STEPCONFIG(i), config);
titsc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY);
}
/* Charge step configuration */
config = ts_dev->bit_xp | ts_dev->bit_yn |
STEPCHARGE_RFP_XPUL | STEPCHARGE_RFM_XNUR |
STEPCHARGE_INM_AN1 | STEPCHARGE_INP(ts_dev->inp_yp);
/* Make CHARGECONFIG same as IDLECONFIG */
config = titsc_readl(ts_dev, REG_IDLECONFIG);
titsc_writel(ts_dev, REG_CHARGECONFIG, config);
titsc_writel(ts_dev, REG_CHARGEDELAY, CHARGEDLY_OPENDLY);
titsc_writel(ts_dev, REG_CHARGEDELAY, ts_dev->charge_delay);
/* coordinate_readouts * 2 … coordinate_readouts * 2 + 2 is for Z */
/* coordinate_readouts + 1 ... coordinate_readouts + 2 is for Z */
config = STEPCONFIG_MODE_HWSYNC |
STEPCONFIG_AVG_16 | ts_dev->bit_yp |
ts_dev->bit_xn | STEPCONFIG_INM_ADCREFM |
......@@ -194,73 +196,104 @@ static void titsc_step_config(struct titsc *ts_dev)
titsc_writel(ts_dev, REG_STEPDELAY(end_step),
STEPCONFIG_OPENDLY);
/* The steps1 … end and bit 0 for TS_Charge */
stepenable = (1 << (end_step + 2)) - 1;
/* The steps end ... end - readouts * 2 + 2 and bit 0 for TS_Charge */
stepenable = 1;
for (i = 0; i < tsc_steps; i++)
stepenable |= 1 << (first_step + i + 1);
ts_dev->step_mask = stepenable;
am335x_tsc_se_set_cache(ts_dev->mfd_tscadc, ts_dev->step_mask);
}
static int titsc_cmp_coord(const void *a, const void *b)
{
return *(int *)a - *(int *)b;
}
static void titsc_read_coordinates(struct titsc *ts_dev,
u32 *x, u32 *y, u32 *z1, u32 *z2)
{
unsigned int fifocount = titsc_readl(ts_dev, REG_FIFO0CNT);
unsigned int prev_val_x = ~0, prev_val_y = ~0;
unsigned int prev_diff_x = ~0, prev_diff_y = ~0;
unsigned int read, diff;
unsigned int i, channel;
unsigned int yvals[7], xvals[7];
unsigned int i, xsum = 0, ysum = 0;
unsigned int creads = ts_dev->coordinate_readouts;
*z1 = *z2 = 0;
if (fifocount % (creads * 2 + 2))
fifocount -= fifocount % (creads * 2 + 2);
/*
* Delta filter is used to remove large variations in sampled
* values from ADC. The filter tries to predict where the next
* coordinate could be. This is done by taking a previous
* coordinate and subtracting it form current one. Further the
* algorithm compares the difference with that of a present value,
* if true the value is reported to the sub system.
*/
for (i = 0; i < fifocount; i++) {
read = titsc_readl(ts_dev, REG_FIFO0);
channel = (read & 0xf0000) >> 16;
read &= 0xfff;
if (channel < creads) {
diff = abs(read - prev_val_x);
if (diff < prev_diff_x) {
prev_diff_x = diff;
*x = read;
}
prev_val_x = read;
for (i = 0; i < creads; i++) {
yvals[i] = titsc_readl(ts_dev, REG_FIFO0);
yvals[i] &= 0xfff;
}
} else if (channel < creads * 2) {
diff = abs(read - prev_val_y);
if (diff < prev_diff_y) {
prev_diff_y = diff;
*y = read;
}
prev_val_y = read;
*z1 = titsc_readl(ts_dev, REG_FIFO0);
*z1 &= 0xfff;
*z2 = titsc_readl(ts_dev, REG_FIFO0);
*z2 &= 0xfff;
} else if (channel < creads * 2 + 1) {
*z1 = read;
for (i = 0; i < creads; i++) {
xvals[i] = titsc_readl(ts_dev, REG_FIFO0);
xvals[i] &= 0xfff;
}
} else if (channel < creads * 2 + 2) {
*z2 = read;
/*
* If co-ordinates readouts is less than 4 then
* report the average. In case of 4 or more
* readouts, sort the co-ordinate samples, drop
* min and max values and report the average of
* remaining values.
*/
if (creads <= 3) {
for (i = 0; i < creads; i++) {
ysum += yvals[i];
xsum += xvals[i];
}
ysum /= creads;
xsum /= creads;
} else {
sort(yvals, creads, sizeof(unsigned int),
titsc_cmp_coord, NULL);
sort(xvals, creads, sizeof(unsigned int),
titsc_cmp_coord, NULL);
for (i = 1; i < creads - 1; i++) {
ysum += yvals[i];
xsum += xvals[i];
}
ysum /= creads - 2;
xsum /= creads - 2;
}
*y = ysum;
*x = xsum;
}
static irqreturn_t titsc_irq(int irq, void *dev)
{
struct titsc *ts_dev = dev;
struct input_dev *input_dev = ts_dev->input;
unsigned int status, irqclr = 0;
unsigned int fsm, status, irqclr = 0;
unsigned int x = 0, y = 0;
unsigned int z1, z2, z;
unsigned int fsm;
status = titsc_readl(ts_dev, REG_IRQSTATUS);
status = titsc_readl(ts_dev, REG_RAWIRQSTATUS);
if (status & IRQENB_HW_PEN) {
ts_dev->pen_down = true;
titsc_writel(ts_dev, REG_IRQWAKEUP, 0x00);
titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN);
irqclr |= IRQENB_HW_PEN;
}
if (status & IRQENB_PENUP) {
fsm = titsc_readl(ts_dev, REG_ADCFSM);
if (fsm == ADCFSM_STEPID) {
ts_dev->pen_down = false;
input_report_key(input_dev, BTN_TOUCH, 0);
input_report_abs(input_dev, ABS_PRESSURE, 0);
input_sync(input_dev);
} else {
ts_dev->pen_down = true;
}
irqclr |= IRQENB_PENUP;
}
if (status & IRQENB_EOS)
irqclr |= IRQENB_EOS;
/*
* ADC and touchscreen share the IRQ line.
* FIFO1 interrupts are used by ADC. Handle FIFO0 IRQs here only
......@@ -291,37 +324,11 @@ static irqreturn_t titsc_irq(int irq, void *dev)
}
irqclr |= IRQENB_FIFO0THRES;
}
/*
* Time for sequencer to settle, to read
* correct state of the sequencer.
*/
udelay(SEQ_SETTLE);
status = titsc_readl(ts_dev, REG_RAWIRQSTATUS);
if (status & IRQENB_PENUP) {
/* Pen up event */
fsm = titsc_readl(ts_dev, REG_ADCFSM);
if (fsm == ADCFSM_STEPID) {
ts_dev->pen_down = false;
input_report_key(input_dev, BTN_TOUCH, 0);
input_report_abs(input_dev, ABS_PRESSURE, 0);
input_sync(input_dev);
} else {
ts_dev->pen_down = true;
}
irqclr |= IRQENB_PENUP;
}
if (status & IRQENB_HW_PEN) {
titsc_writel(ts_dev, REG_IRQWAKEUP, 0x00);
titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN);
}
if (irqclr) {
titsc_writel(ts_dev, REG_IRQSTATUS, irqclr);
am335x_tsc_se_set_cache(ts_dev->mfd_tscadc, ts_dev->step_mask);
if (status & IRQENB_EOS)
am335x_tsc_se_set_cache(ts_dev->mfd_tscadc,
ts_dev->step_mask);
return IRQ_HANDLED;
}
return IRQ_NONE;
......@@ -368,6 +375,23 @@ static int titsc_parse_dt(struct platform_device *pdev,
if (err < 0)
return err;
if (ts_dev->coordinate_readouts <= 0) {
dev_warn(&pdev->dev,
"invalid co-ordinate readouts, resetting it to 5\n");
ts_dev->coordinate_readouts = 5;
}
err = of_property_read_u32(node, "ti,charge-delay",
&ts_dev->charge_delay);
/*
* If ti,charge-delay value is not specified, then use
* CHARGEDLY_OPENDLY as the default value.
*/
if (err < 0) {
ts_dev->charge_delay = CHARGEDLY_OPENDLY;
dev_warn(&pdev->dev, "ti,charge-delay not specified\n");
}
return of_property_read_u32_array(node, "ti,wire-config",
ts_dev->config_inp, ARRAY_SIZE(ts_dev->config_inp));
}
......@@ -411,6 +435,7 @@ static int titsc_probe(struct platform_device *pdev)
}
titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO0THRES);
titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_EOS);
err = titsc_config_wires(ts_dev);
if (err) {
dev_err(&pdev->dev, "wrong i/p wire configuration\n");
......
include/linux/input/mt.h
View file @ 718749d5
......@@ -119,7 +119,8 @@ struct input_mt_pos {
};
int input_mt_assign_slots(struct input_dev *dev, int *slots,
const struct input_mt_pos *pos, int num_pos);
const struct input_mt_pos *pos, int num_pos,
int dmax);
int input_mt_get_slot_by_key(struct input_dev *dev, int key);
......
include/linux/mfd/ti_am335x_tscadc.h
View file @ 718749d5
......@@ -52,6 +52,7 @@
/* IRQ enable */
#define IRQENB_HW_PEN BIT(0)
#define IRQENB_EOS BIT(1)
#define IRQENB_FIFO0THRES BIT(2)
#define IRQENB_FIFO0OVRRUN BIT(3)
#define IRQENB_FIFO0UNDRFLW BIT(4)
......@@ -107,7 +108,7 @@
/* Charge delay */
#define CHARGEDLY_OPEN_MASK (0x3FFFF << 0)
#define CHARGEDLY_OPEN(val) ((val) << 0)
#define CHARGEDLY_OPENDLY CHARGEDLY_OPEN(1)
#define CHARGEDLY_OPENDLY CHARGEDLY_OPEN(0x400)
/* Control register */
#define CNTRLREG_TSCSSENB BIT(0)
......
include/linux/platform_data/regulator-haptic.h 0 → 100644
View file @ 718749d5
/*
* Regulator Haptic Platform Data
*
* Copyright (c) 2014 Samsung Electronics Co., Ltd.
* Author: Jaewon Kim <jaewon02.kim@samsung.com>
* Author: Hyunhee Kim <hyunhee.kim@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _REGULATOR_HAPTIC_H
#define _REGULATOR_HAPTIC_H
/*
* struct regulator_haptic_data - Platform device data
*
* @max_volt: maximum voltage value supplied to the haptic motor.
* <The unit of the voltage is a micro>
* @min_volt: minimum voltage value supplied to the haptic motor.
* <The unit of the voltage is a micro>
*/
struct regulator_haptic_data {
unsigned int max_volt;
unsigned int min_volt;
};
#endif /* _REGULATOR_HAPTIC_H */
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