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Commit a5032df6 authored by Vojtech Pavlik's avatar Vojtech Pavlik
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Add a driver for the Bitsy touchscreen.

parent c986e19c
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drivers/input/touchscreen/Config.help
View file @ a5032df6
...@@ -14,3 +14,13 @@ CONFIG_TOUCHSCREEN_GUNZE ...@@ -14,3 +14,13 @@ CONFIG_TOUCHSCREEN_GUNZE
inserted in and removed from the running kernel whenever you want). inserted in and removed from the running kernel whenever you want).
The module will be called gunze.o. If you want to compile it as a The module will be called gunze.o. If you want to compile it as a
module, say M here and read <file:Documentation/modules.txt>. module, say M here and read <file:Documentation/modules.txt>.
CONFIG_TOUCHSCREEN_BITSY
Say Y here if you have the h3600 (Bitsy) touchscreen.
If unsure, say N.
This driver is also available as a module ( = code which can be
inserted in and removed from the running kernel whenever you want).
The module will be called gunze.o. If you want to compile it as a
module, say M here and read <file:Documentation/modules.txt>.
drivers/input/touchscreen/Config.in
View file @ a5032df6
...@@ -4,4 +4,7 @@ ...@@ -4,4 +4,7 @@
bool 'Touchscreens' CONFIG_INPUT_TOUCHSCREEN bool 'Touchscreens' CONFIG_INPUT_TOUCHSCREEN
if [ "$CONFIG_SA1100_BITSY" = "y" ]; then
dep_tristate ' Compaq iPAQ H3600 (Bitsy) touchscreen input driver' CONFIG_TOUCHSCREEN_BITSY $CONFIG_INPUT $CONFIG_INPUT_TOUCHSCREEN $CONFIG_SERIO
fi
dep_tristate ' Gunze AHL-51S touchscreen' CONFIG_TOUCHSCREEN_GUNZE $CONFIG_INPUT $CONFIG_INPUT_TOUCHSCREEN $CONFIG_SERIO dep_tristate ' Gunze AHL-51S touchscreen' CONFIG_TOUCHSCREEN_GUNZE $CONFIG_INPUT $CONFIG_INPUT_TOUCHSCREEN $CONFIG_SERIO
drivers/input/touchscreen/Makefile
View file @ a5032df6
...@@ -4,6 +4,7 @@ ...@@ -4,6 +4,7 @@
# Each configuration option enables a list of files. # Each configuration option enables a list of files.
obj-$(CONFIG_TOUCHSCREEN_BITSY) += h3600_ts_input.o
obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o
# The global Rules.make. # The global Rules.make.
......
drivers/input/touchscreen/h3600_ts_input.c 0 → 100644
View file @ a5032df6
/*
* $Id: h3600_ts_input.c,v 1.4 2002/01/23 06:39:37 jsimmons Exp $
*
* Copyright (c) 2001 "Crazy" James Simmons jsimmons@transvirtual.com
*
* Sponsored by Transvirtual Technology.
*
* Derived from the code in h3600_ts.[ch] by Charles Flynn
*/
/*
* Driver for the h3600 Touch Screen and other Atmel controlled devices.
*/
/*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Should you need to contact me, the author, you can do so by
* e-mail - mail your message to <jsimmons@transvirtual.com>.
*/
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/serio.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
/* SA1100 serial defines */
#include <asm/arch/hardware.h>
#include <asm/arch/irqs.h>
/*
* Definitions & global arrays.
*/
/* The start and end of frame characters SOF and EOF */
#define CHAR_SOF 0x02
#define CHAR_EOF 0x03
#define FRAME_OVERHEAD 3 /* CHAR_SOF,CHAR_EOF,LENGTH = 3 */
/*
Atmel events and response IDs contained in frame.
Programmer has no control over these numbers.
TODO there are holes - specifically 1,7,0x0a
*/
#define VERSION_ID 0 /* Get Version (request/respose) */
#define KEYBD_ID 2 /* Keyboard (event) */
#define TOUCHS_ID 3 /* Touch Screen (event)*/
#define EEPROM_READ_ID 4 /* (request/response) */
#define EEPROM_WRITE_ID 5 /* (request/response) */
#define THERMAL_ID 6 /* (request/response) */
#define NOTIFY_LED_ID 8 /* (request/response) */
#define BATTERY_ID 9 /* (request/response) */
#define SPI_READ_ID 0x0b /* ( request/response) */
#define SPI_WRITE_ID 0x0c /* ( request/response) */
#define FLITE_ID 0x0d /* backlight ( request/response) */
#define STX_ID 0xa1 /* extension pack status (req/resp) */
#define MAX_ID 14
#define H3600_MAX_LENGTH 16
#define H3600_KEY 0xf
#define H3600_SCANCODE_RECORD 1 /* 1 -> record button */
#define H3600_SCANCODE_CALENDAR 2 /* 2 -> calendar */
#define H3600_SCANCODE_CONTACTS 3 /* 3 -> contact */
#define H3600_SCANCODE_Q 4 /* 4 -> Q button */
#define H3600_SCANCODE_START 5 /* 5 -> start menu */
#define H3600_SCANCODE_UP 6 /* 6 -> up */
#define H3600_SCANCODE_RIGHT 7 /* 7 -> right */
#define H3600_SCANCODE_LEFT 8 /* 8 -> left */
#define H3600_SCANCODE_DOWN 9 /* 9 -> down */
static char *h3600_name = "H3600 TouchScreen";
/*
* Per-touchscreen data.
*/
struct h3600_dev {
struct input_dev dev;
struct serio *serio;
unsigned char event; /* event ID from packet */
unsigned char chksum;
unsigned char len;
unsigned char idx;
unsigned char buf[H3600_MAX_LENGTH];
char phys[32];
};
static void action_button_handler(int irq, void *dev_id, struct pt_regs *regs)
{
int down = (GPLR & GPIO_BITSY_ACTION_BUTTON) ? 0 : 1;
struct input_dev *dev = (struct input_dev *) dev_id;
input_report_key(dev, KEY_ENTER, down);
}
static void npower_button_handler(int irq, void *dev_id, struct pt_regs *regs)
{
int down = (GPLR & GPIO_BITSY_NPOWER_BUTTON) ? 0 : 1;
struct input_dev *dev = (struct input_dev *) dev_id;
/*
* This interrupt is only called when we release the key. So we have
* to fake a key press.
*/
input_report_key(dev, KEY_SUSPEND, 1);
input_report_key(dev, KEY_SUSPEND, down);
}
#ifdef CONFIG_PM
static int flite_brightness = 25;
enum flite_pwr {
FLITE_PWR_OFF = 0,
FLITE_PWR_ON = 1
};
/*
* h3600_flite_power: enables or disables power to frontlight, using last bright */
unsigned int h3600_flite_power(struct input_dev *dev, enum flite_pwr pwr)
{
unsigned char brightness = ((pwr==FLITE_PWR_OFF) ? 0:flite_brightness);
struct h3600_dev *ts = dev->private;
/* Must be in this order */
ts->serio->write(ts->serio, 1);
ts->serio->write(ts->serio, pwr);
ts->serio->write(ts->serio, brightness);
return 0;
}
static int suspended = 0;
static int h3600ts_pm_callback(struct pm_dev *pm_dev, pm_request_t req,
void *data)
{
struct input_dev *dev = (struct input_dev *) data;
switch (req) {
case PM_SUSPEND: /* enter D1-D3 */
suspended = 1;
h3600_flite_power(dev, FLITE_PWR_OFF);
break;
case PM_BLANK:
if (!suspended)
h3600_flite_power(dev, FLITE_PWR_OFF);
break;
case PM_RESUME: /* enter D0 */
/* same as unblank */
case PM_UNBLANK:
if (suspended) {
//initSerial();
suspended = 0;
}
h3600_flite_power(dev, FLITE_PWR_ON);
break;
}
return 0;
}
#endif
/*
* This function translates the native event packets to linux input event
* packets. Some packets coming from serial are not touchscreen related. In
* this case we send them off to be processed elsewhere.
*/
static void h3600ts_process_packet(struct h3600_dev *ts)
{
struct input_dev *dev = &ts->dev;
static int touched = 0;
int key, down = 0;
switch (ts->event) {
/*
Buttons - returned as a single byte
7 6 5 4 3 2 1 0
S x x x N N N N
S switch state ( 0=pressed 1=released)
x Unused.
NNNN switch number 0-15
Note: This is true for non interrupt generated key events.
*/
case KEYBD_ID:
down = (ts->buf[0] & 0x80) ? 0 : 1;
switch (ts->buf[0] & 0x7f) {
case H3600_SCANCODE_RECORD:
key = KEY_RECORD;
break;
case H3600_SCANCODE_CALENDAR:
key = KEY_PROG1;
break;
case H3600_SCANCODE_CONTACTS:
key = KEY_PROG2;
break;
case H3600_SCANCODE_Q:
key = KEY_Q;
break;
case H3600_SCANCODE_START:
key = KEY_PROG3;
break;
case H3600_SCANCODE_UP:
key = KEY_UP;
break;
case H3600_SCANCODE_RIGHT:
key = KEY_RIGHT;
break;
case H3600_SCANCODE_LEFT:
key = KEY_LEFT;
break;
case H3600_SCANCODE_DOWN:
key = KEY_DOWN;
break;
default:
key = 0;
}
if (key)
input_report_key(dev, key, down);
break;
/*
* Native touchscreen event data is formatted as shown below:-
*
* +-------+-------+-------+-------+
* | Xmsb | Xlsb | Ymsb | Ylsb |
* +-------+-------+-------+-------+
* byte 0 1 2 3
*/
case TOUCHS_ID:
if (!touched) {
input_report_key(dev, BTN_TOUCH, 1);
touched = 1;
}
if (ts->len) {
unsigned short x, y;
x = ts->buf[0]; x <<= 8; x += ts->buf[1];
y = ts->buf[2]; y <<= 8; y += ts->buf[3];
input_report_abs(dev, ABS_X, x);
input_report_abs(dev, ABS_Y, y);
} else {
input_report_key(dev, BTN_TOUCH, 0);
touched = 0;
}
break;
default:
/* Send a non input event elsewhere */
break;
}
}
/*
* h3600ts_event() handles events from the input module.
*/
static int h3600ts_event(struct input_dev *dev, unsigned int type,
unsigned int code, int value)
{
struct h3600_dev *ts = dev->private;
switch (type) {
case EV_LED: {
// ts->serio->write(ts->serio, SOME_CMD);
return 0;
}
}
return -1;
}
/*
Frame format
byte 1 2 3 len + 4
+-------+---------------+---------------+--=------------+
|SOF |id |len | len bytes | Chksum |
+-------+---------------+---------------+--=------------+
bit 0 7 8 11 12 15 16
+-------+---------------+-------+
|SOF |id |0 |Chksum | - Note Chksum does not include SOF
+-------+---------------+-------+
bit 0 7 8 11 12 15 16
*/
static int state;
/* decode States */
#define STATE_SOF 0 /* start of FRAME */
#define STATE_ID 1 /* state where we decode the ID & len */
#define STATE_DATA 2 /* state where we decode data */
#define STATE_EOF 3 /* state where we decode checksum or EOF */
static void h3600ts_interrupt(struct serio *serio, unsigned char data,
unsigned int flags)
{
struct h3600_dev *ts = serio->private;
/*
* We have a new frame coming in.
*/
switch (state) {
case STATE_SOF:
if (data == CHAR_SOF)
state = STATE_ID;
return;
case STATE_ID:
ts->event = (data & 0xf0) >> 4;
ts->len = (data & 0xf);
ts->idx = 0;
if (ts->event >= MAX_ID) {
state = STATE_SOF;
break;
}
ts->chksum = data;
state=(ts->len > 0 ) ? STATE_DATA : STATE_EOF;
break;
case STATE_DATA:
ts->chksum += data;
ts->buf[ts->idx]= data;
if(++ts->idx == ts->len)
state = STATE_EOF;
break;
case STATE_EOF:
state = STATE_SOF;
if (data == CHAR_EOF || data == ts->chksum )
h3600ts_process_packet(ts);
break;
default:
printk("Error3\n");
break;
}
}
/*
* h3600ts_connect() is the routine that is called when someone adds a
* new serio device. It looks whether it was registered as a H3600 touchscreen
* and if yes, registers it as an input device.
*/
static void h3600ts_connect(struct serio *serio, struct serio_dev *dev)
{
struct h3600_dev *ts;
if (serio->type != (SERIO_RS232 | SERIO_H3600))
return;
if (!(ts = kmalloc(sizeof(struct h3600_dev), GFP_KERNEL)))
return;
memset(ts, 0, sizeof(struct h3600_dev));
/* Device specific stuff */
set_GPIO_IRQ_edge( GPIO_BITSY_ACTION_BUTTON, GPIO_BOTH_EDGES );
set_GPIO_IRQ_edge( GPIO_BITSY_NPOWER_BUTTON, GPIO_RISING_EDGE );
if (request_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, action_button_handler,
SA_SHIRQ | SA_INTERRUPT | SA_SAMPLE_RANDOM,
"h3600_action", &ts->dev)) {
printk(KERN_ERR "h3600ts.c: Could not allocate Action Button IRQ!\n");
kfree(ts);
return;
}
if (request_irq(IRQ_GPIO_BITSY_NPOWER_BUTTON, npower_button_handler,
SA_SHIRQ | SA_INTERRUPT | SA_SAMPLE_RANDOM,
"h3600_suspend", &ts->dev)) {
free_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, &ts->dev);
printk(KERN_ERR "h3600ts.c: Could not allocate Power Button IRQ!\n");
kfree(ts);
return;
}
/* Now we have things going we setup our input device */
ts->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_LED) | BIT(EV_PWR);
ts->dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
ts->dev.ledbit[0] = BIT(LED_SLEEP);
ts->dev.absmin[ABS_X] = 60; ts->dev.absmin[ABS_Y] = 35;
ts->dev.absmax[ABS_X] = 985; ts->dev.absmax[ABS_Y] = 1024;
ts->dev.absfuzz[ABS_X] = 0; ts->dev.absfuzz[ABS_Y] = 0;
ts->serio = serio;
serio->private = ts;
set_bit(KEY_RECORD, ts->dev.keybit);
set_bit(KEY_Q, ts->dev.keybit);
set_bit(KEY_PROG1, ts->dev.keybit);
set_bit(KEY_PROG2, ts->dev.keybit);
set_bit(KEY_PROG3, ts->dev.keybit);
set_bit(KEY_UP, ts->dev.keybit);
set_bit(KEY_RIGHT, ts->dev.keybit);
set_bit(KEY_LEFT, ts->dev.keybit);
set_bit(KEY_DOWN, ts->dev.keybit);
set_bit(KEY_ENTER, ts->dev.keybit);
ts->dev.keybit[LONG(BTN_TOUCH)] |= BIT(BTN_TOUCH);
ts->dev.keybit[LONG(KEY_SUSPEND)] |= BIT(KEY_SUSPEND);
sprintf(ts->phys, "%s/input0", serio->phys);
ts->dev.event = h3600ts_event;
ts->dev.private = ts;
ts->dev.name = h3600_name;
ts->dev.phys = ts->phys;
ts->dev.idbus = BUS_RS232;
ts->dev.idvendor = SERIO_H3600;
ts->dev.idproduct = 0x0666; /* FIXME !!! We can ask the hardware */
ts->dev.idversion = 0x0100;
if (serio_open(serio, dev)) {
free_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, ts);
free_irq(IRQ_GPIO_BITSY_NPOWER_BUTTON, ts);
kfree(ts);
return;
}
//h3600_flite_control(1, 25); /* default brightness */
#ifdef CONFIG_PM
ts->dev.pm_dev = pm_register(PM_ILLUMINATION_DEV, PM_SYS_LIGHT,
h3600ts_pm_callback);
printk("registered pm callback\n");
#endif
input_register_device(&ts->dev);
printk(KERN_INFO "input: %s on %s\n", h3600_name, serio->phys);
}
/*
* h3600ts_disconnect() is the opposite of h3600ts_connect()
*/
static void h3600ts_disconnect(struct serio *serio)
{
struct h3600_dev *ts = serio->private;
free_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, &ts->dev);
free_irq(IRQ_GPIO_BITSY_NPOWER_BUTTON, &ts->dev);
input_unregister_device(&ts->dev);
serio_close(serio);
kfree(ts);
}
/*
* The serio device structure.
*/
static struct serio_dev h3600ts_dev = {
interrupt: h3600ts_interrupt,
connect: h3600ts_connect,
disconnect: h3600ts_disconnect,
};
/*
* The functions for inserting/removing us as a module.
*/
static int __init h3600ts_init(void)
{
serio_register_device(&h3600ts_dev);
return 0;
}
static void __exit h3600ts_exit(void)
{
serio_unregister_device(&h3600ts_dev);
}
module_init(h3600ts_init);
module_exit(h3600ts_exit);
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