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Commit 25162a4f authored by Dmitry Torokhov's avatar Dmitry Torokhov
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Input: cyttsp4 - remove driver 

The cyttsp4 touchscreen driver was contributed in 2013 and since then
has seen no updates. The driver uses platform data (no device tree
support) and there are no users of it in the mainline kernel. There were
occasional fixes to it for issues either found by static code analysis
tools or via visual inspection, but otherwise the driver is completely
untested.

Remove the driver.
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: default avatarJavier Martinez Canillas <javierm@redhat.com>
Link: https://lore.kernel.org/r/ZrAZ2cUow_z838tp@google.comSigned-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent ae25dbac
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Showing with 56 additions and 3067 deletions
drivers/input/touchscreen/Kconfig
View file @ 25162a4f
......@@ -254,36 +254,6 @@ config TOUCHSCREEN_CYTTSP_SPI
To compile this driver as a module, choose M here: the
module will be called cyttsp_spi.
config TOUCHSCREEN_CYTTSP4_CORE
tristate "Cypress TrueTouch Gen4 Touchscreen Driver"
help
Core driver for Cypress TrueTouch(tm) Standard Product
Generation4 touchscreen controllers.
Say Y here if you have a Cypress Gen4 touchscreen.
If unsure, say N.
To compile this driver as a module, choose M here.
config TOUCHSCREEN_CYTTSP4_I2C
tristate "support I2C bus connection"
depends on TOUCHSCREEN_CYTTSP4_CORE && I2C
help
Say Y here if the touchscreen is connected via I2C bus.
To compile this driver as a module, choose M here: the
module will be called cyttsp4_i2c.
config TOUCHSCREEN_CYTTSP4_SPI
tristate "support SPI bus connection"
depends on TOUCHSCREEN_CYTTSP4_CORE && SPI_MASTER
help
Say Y here if the touchscreen is connected via SPI bus.
To compile this driver as a module, choose M here: the
module will be called cyttsp4_spi.
config TOUCHSCREEN_CYTTSP5
tristate "Cypress TrueTouch Gen5 Touchscreen Driver"
depends on I2C
......
drivers/input/touchscreen/Makefile
View file @ 25162a4f
......@@ -25,11 +25,8 @@ obj-$(CONFIG_TOUCHSCREEN_CHIPONE_ICN8505) += chipone_icn8505.o
obj-$(CONFIG_TOUCHSCREEN_CY8CTMA140) += cy8ctma140.o
obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110) += cy8ctmg110_ts.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP_CORE) += cyttsp_core.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP_I2C) += cyttsp_i2c.o cyttsp_i2c_common.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP_I2C) += cyttsp_i2c.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP_SPI) += cyttsp_spi.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP4_CORE) += cyttsp4_core.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP4_I2C) += cyttsp4_i2c.o cyttsp_i2c_common.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP4_SPI) += cyttsp4_spi.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP5) += cyttsp5.o
obj-$(CONFIG_TOUCHSCREEN_DA9034) += da9034-ts.o
obj-$(CONFIG_TOUCHSCREEN_DA9052) += da9052_tsi.o
......
drivers/input/touchscreen/cyttsp4_core.c deleted 100644 → 0
View file @ ae25dbac
// SPDX-License-Identifier: GPL-2.0-only
/*
* cyttsp4_core.c
* Cypress TrueTouch(TM) Standard Product V4 Core driver module.
* For use with Cypress Txx4xx parts.
* Supported parts include:
* TMA4XX
* TMA1036
*
* Copyright (C) 2012 Cypress Semiconductor
*
* Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
*/
#include "cyttsp4_core.h"
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/input/mt.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>
#include <linux/sched.h>
#include <linux/slab.h>
/* Timeout in ms. */
#define CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT 500
#define CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT 5000
#define CY_CORE_MODE_CHANGE_TIMEOUT 1000
#define CY_CORE_RESET_AND_WAIT_TIMEOUT 500
#define CY_CORE_WAKEUP_TIMEOUT 500
#define CY_CORE_STARTUP_RETRY_COUNT 3
static const char * const cyttsp4_tch_abs_string[] = {
[CY_TCH_X] = "X",
[CY_TCH_Y] = "Y",
[CY_TCH_P] = "P",
[CY_TCH_T] = "T",
[CY_TCH_E] = "E",
[CY_TCH_O] = "O",
[CY_TCH_W] = "W",
[CY_TCH_MAJ] = "MAJ",
[CY_TCH_MIN] = "MIN",
[CY_TCH_OR] = "OR",
[CY_TCH_NUM_ABS] = "INVALID"
};
static const u8 ldr_exit[] = {
0xFF, 0x01, 0x3B, 0x00, 0x00, 0x4F, 0x6D, 0x17
};
static const u8 ldr_err_app[] = {
0x01, 0x02, 0x00, 0x00, 0x55, 0xDD, 0x17
};
static inline size_t merge_bytes(u8 high, u8 low)
{
return (high << 8) + low;
}
#ifdef VERBOSE_DEBUG
static void cyttsp4_pr_buf(struct device *dev, u8 *pr_buf, u8 *dptr, int size,
const char *data_name)
{
int i, k;
const char fmt[] = "%02X ";
int max;
if (!size)
return;
max = (CY_MAX_PRBUF_SIZE - 1) - sizeof(CY_PR_TRUNCATED);
pr_buf[0] = 0;
for (i = k = 0; i < size && k < max; i++, k += 3)
scnprintf(pr_buf + k, CY_MAX_PRBUF_SIZE, fmt, dptr[i]);
dev_vdbg(dev, "%s: %s[0..%d]=%s%s\n", __func__, data_name, size - 1,
pr_buf, size <= max ? "" : CY_PR_TRUNCATED);
}
#else
#define cyttsp4_pr_buf(dev, pr_buf, dptr, size, data_name) do { } while (0)
#endif
static int cyttsp4_load_status_regs(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
struct device *dev = cd->dev;
int rc;
rc = cyttsp4_adap_read(cd, CY_REG_BASE, si->si_ofs.mode_size,
si->xy_mode);
if (rc < 0)
dev_err(dev, "%s: fail read mode regs r=%d\n",
__func__, rc);
else
cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_mode,
si->si_ofs.mode_size, "xy_mode");
return rc;
}
static int cyttsp4_handshake(struct cyttsp4 *cd, u8 mode)
{
u8 cmd = mode ^ CY_HST_TOGGLE;
int rc;
/*
* Mode change issued, handshaking now will cause endless mode change
* requests, for sync mode modechange will do same with handshake
* */
if (mode & CY_HST_MODE_CHANGE)
return 0;
rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd);
if (rc < 0)
dev_err(cd->dev, "%s: bus write fail on handshake (ret=%d)\n",
__func__, rc);
return rc;
}
static int cyttsp4_hw_soft_reset(struct cyttsp4 *cd)
{
u8 cmd = CY_HST_RESET;
int rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd);
if (rc < 0) {
dev_err(cd->dev, "%s: FAILED to execute SOFT reset\n",
__func__);
return rc;
}
return 0;
}
static int cyttsp4_hw_hard_reset(struct cyttsp4 *cd)
{
if (cd->cpdata->xres) {
cd->cpdata->xres(cd->cpdata, cd->dev);
dev_dbg(cd->dev, "%s: execute HARD reset\n", __func__);
return 0;
}
dev_err(cd->dev, "%s: FAILED to execute HARD reset\n", __func__);
return -ENOSYS;
}
static int cyttsp4_hw_reset(struct cyttsp4 *cd)
{
int rc = cyttsp4_hw_hard_reset(cd);
if (rc == -ENOSYS)
rc = cyttsp4_hw_soft_reset(cd);
return rc;
}
/*
* Gets number of bits for a touch filed as parameter,
* sets maximum value for field which is used as bit mask
* and returns number of bytes required for that field
*/
static int cyttsp4_bits_2_bytes(unsigned int nbits, size_t *max)
{
*max = 1UL << nbits;
return (nbits + 7) / 8;
}
static int cyttsp4_si_data_offsets(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
int rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(si->si_data),
&si->si_data);
if (rc < 0) {
dev_err(cd->dev, "%s: fail read sysinfo data offsets r=%d\n",
__func__, rc);
return rc;
}
/* Print sysinfo data offsets */
cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)&si->si_data,
sizeof(si->si_data), "sysinfo_data_offsets");
/* convert sysinfo data offset bytes into integers */
si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh,
si->si_data.map_szl);
si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh,
si->si_data.map_szl);
si->si_ofs.cydata_ofs = merge_bytes(si->si_data.cydata_ofsh,
si->si_data.cydata_ofsl);
si->si_ofs.test_ofs = merge_bytes(si->si_data.test_ofsh,
si->si_data.test_ofsl);
si->si_ofs.pcfg_ofs = merge_bytes(si->si_data.pcfg_ofsh,
si->si_data.pcfg_ofsl);
si->si_ofs.opcfg_ofs = merge_bytes(si->si_data.opcfg_ofsh,
si->si_data.opcfg_ofsl);
si->si_ofs.ddata_ofs = merge_bytes(si->si_data.ddata_ofsh,
si->si_data.ddata_ofsl);
si->si_ofs.mdata_ofs = merge_bytes(si->si_data.mdata_ofsh,
si->si_data.mdata_ofsl);
return rc;
}
static int cyttsp4_si_get_cydata(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
int read_offset;
int mfgid_sz, calc_mfgid_sz;
void *p;
int rc;
if (si->si_ofs.test_ofs <= si->si_ofs.cydata_ofs) {
dev_err(cd->dev,
"%s: invalid offset test_ofs: %zu, cydata_ofs: %zu\n",
__func__, si->si_ofs.test_ofs, si->si_ofs.cydata_ofs);
return -EINVAL;
}
si->si_ofs.cydata_size = si->si_ofs.test_ofs - si->si_ofs.cydata_ofs;
dev_dbg(cd->dev, "%s: cydata size: %zd\n", __func__,
si->si_ofs.cydata_size);
p = krealloc(si->si_ptrs.cydata, si->si_ofs.cydata_size, GFP_KERNEL);
if (p == NULL) {
dev_err(cd->dev, "%s: failed to allocate cydata memory\n",
__func__);
return -ENOMEM;
}
si->si_ptrs.cydata = p;
read_offset = si->si_ofs.cydata_ofs;
/* Read the CYDA registers up to MFGID field */
rc = cyttsp4_adap_read(cd, read_offset,
offsetof(struct cyttsp4_cydata, mfgid_sz)
+ sizeof(si->si_ptrs.cydata->mfgid_sz),
si->si_ptrs.cydata);
if (rc < 0) {
dev_err(cd->dev, "%s: fail read cydata r=%d\n",
__func__, rc);
return rc;
}
/* Check MFGID size */
mfgid_sz = si->si_ptrs.cydata->mfgid_sz;
calc_mfgid_sz = si->si_ofs.cydata_size - sizeof(struct cyttsp4_cydata);
if (mfgid_sz != calc_mfgid_sz) {
dev_err(cd->dev, "%s: mismatch in MFGID size, reported:%d calculated:%d\n",
__func__, mfgid_sz, calc_mfgid_sz);
return -EINVAL;
}
read_offset += offsetof(struct cyttsp4_cydata, mfgid_sz)
+ sizeof(si->si_ptrs.cydata->mfgid_sz);
/* Read the CYDA registers for MFGID field */
rc = cyttsp4_adap_read(cd, read_offset, si->si_ptrs.cydata->mfgid_sz,
si->si_ptrs.cydata->mfg_id);
if (rc < 0) {
dev_err(cd->dev, "%s: fail read cydata r=%d\n",
__func__, rc);
return rc;
}
read_offset += si->si_ptrs.cydata->mfgid_sz;
/* Read the rest of the CYDA registers */
rc = cyttsp4_adap_read(cd, read_offset,
sizeof(struct cyttsp4_cydata)
- offsetof(struct cyttsp4_cydata, cyito_idh),
&si->si_ptrs.cydata->cyito_idh);
if (rc < 0) {
dev_err(cd->dev, "%s: fail read cydata r=%d\n",
__func__, rc);
return rc;
}
cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.cydata,
si->si_ofs.cydata_size, "sysinfo_cydata");
return rc;
}
static int cyttsp4_si_get_test_data(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
void *p;
int rc;
if (si->si_ofs.pcfg_ofs <= si->si_ofs.test_ofs) {
dev_err(cd->dev,
"%s: invalid offset pcfg_ofs: %zu, test_ofs: %zu\n",
__func__, si->si_ofs.pcfg_ofs, si->si_ofs.test_ofs);
return -EINVAL;
}
si->si_ofs.test_size = si->si_ofs.pcfg_ofs - si->si_ofs.test_ofs;
p = krealloc(si->si_ptrs.test, si->si_ofs.test_size, GFP_KERNEL);
if (p == NULL) {
dev_err(cd->dev, "%s: failed to allocate test memory\n",
__func__);
return -ENOMEM;
}
si->si_ptrs.test = p;
rc = cyttsp4_adap_read(cd, si->si_ofs.test_ofs, si->si_ofs.test_size,
si->si_ptrs.test);
if (rc < 0) {
dev_err(cd->dev, "%s: fail read test data r=%d\n",
__func__, rc);
return rc;
}
cyttsp4_pr_buf(cd->dev, cd->pr_buf,
(u8 *)si->si_ptrs.test, si->si_ofs.test_size,
"sysinfo_test_data");
if (si->si_ptrs.test->post_codel &
CY_POST_CODEL_WDG_RST)
dev_info(cd->dev, "%s: %s codel=%02X\n",
__func__, "Reset was a WATCHDOG RESET",
si->si_ptrs.test->post_codel);
if (!(si->si_ptrs.test->post_codel &
CY_POST_CODEL_CFG_DATA_CRC_FAIL))
dev_info(cd->dev, "%s: %s codel=%02X\n", __func__,
"Config Data CRC FAIL",
si->si_ptrs.test->post_codel);
if (!(si->si_ptrs.test->post_codel &
CY_POST_CODEL_PANEL_TEST_FAIL))
dev_info(cd->dev, "%s: %s codel=%02X\n",
__func__, "PANEL TEST FAIL",
si->si_ptrs.test->post_codel);
dev_info(cd->dev, "%s: SCANNING is %s codel=%02X\n",
__func__, si->si_ptrs.test->post_codel & 0x08 ?
"ENABLED" : "DISABLED",
si->si_ptrs.test->post_codel);
return rc;
}
static int cyttsp4_si_get_pcfg_data(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
void *p;
int rc;
if (si->si_ofs.opcfg_ofs <= si->si_ofs.pcfg_ofs) {
dev_err(cd->dev,
"%s: invalid offset opcfg_ofs: %zu, pcfg_ofs: %zu\n",
__func__, si->si_ofs.opcfg_ofs, si->si_ofs.pcfg_ofs);
return -EINVAL;
}
si->si_ofs.pcfg_size = si->si_ofs.opcfg_ofs - si->si_ofs.pcfg_ofs;
p = krealloc(si->si_ptrs.pcfg, si->si_ofs.pcfg_size, GFP_KERNEL);
if (p == NULL) {
dev_err(cd->dev, "%s: failed to allocate pcfg memory\n",
__func__);
return -ENOMEM;
}
si->si_ptrs.pcfg = p;
rc = cyttsp4_adap_read(cd, si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size,
si->si_ptrs.pcfg);
if (rc < 0) {
dev_err(cd->dev, "%s: fail read pcfg data r=%d\n",
__func__, rc);
return rc;
}
si->si_ofs.max_x = merge_bytes((si->si_ptrs.pcfg->res_xh
& CY_PCFG_RESOLUTION_X_MASK), si->si_ptrs.pcfg->res_xl);
si->si_ofs.x_origin = !!(si->si_ptrs.pcfg->res_xh
& CY_PCFG_ORIGIN_X_MASK);
si->si_ofs.max_y = merge_bytes((si->si_ptrs.pcfg->res_yh
& CY_PCFG_RESOLUTION_Y_MASK), si->si_ptrs.pcfg->res_yl);
si->si_ofs.y_origin = !!(si->si_ptrs.pcfg->res_yh
& CY_PCFG_ORIGIN_Y_MASK);
si->si_ofs.max_p = merge_bytes(si->si_ptrs.pcfg->max_zh,
si->si_ptrs.pcfg->max_zl);
cyttsp4_pr_buf(cd->dev, cd->pr_buf,
(u8 *)si->si_ptrs.pcfg,
si->si_ofs.pcfg_size, "sysinfo_pcfg_data");
return rc;
}
static int cyttsp4_si_get_opcfg_data(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
struct cyttsp4_tch_abs_params *tch;
struct cyttsp4_tch_rec_params *tch_old, *tch_new;
enum cyttsp4_tch_abs abs;
int i;
void *p;
int rc;
if (si->si_ofs.ddata_ofs <= si->si_ofs.opcfg_ofs) {
dev_err(cd->dev,
"%s: invalid offset ddata_ofs: %zu, opcfg_ofs: %zu\n",
__func__, si->si_ofs.ddata_ofs, si->si_ofs.opcfg_ofs);
return -EINVAL;
}
si->si_ofs.opcfg_size = si->si_ofs.ddata_ofs - si->si_ofs.opcfg_ofs;
p = krealloc(si->si_ptrs.opcfg, si->si_ofs.opcfg_size, GFP_KERNEL);
if (p == NULL) {
dev_err(cd->dev, "%s: failed to allocate opcfg memory\n",
__func__);
return -ENOMEM;
}
si->si_ptrs.opcfg = p;
rc = cyttsp4_adap_read(cd, si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size,
si->si_ptrs.opcfg);
if (rc < 0) {
dev_err(cd->dev, "%s: fail read opcfg data r=%d\n",
__func__, rc);
return rc;
}
si->si_ofs.cmd_ofs = si->si_ptrs.opcfg->cmd_ofs;
si->si_ofs.rep_ofs = si->si_ptrs.opcfg->rep_ofs;
si->si_ofs.rep_sz = (si->si_ptrs.opcfg->rep_szh * 256) +
si->si_ptrs.opcfg->rep_szl;
si->si_ofs.num_btns = si->si_ptrs.opcfg->num_btns;
si->si_ofs.num_btn_regs = (si->si_ofs.num_btns +
CY_NUM_BTN_PER_REG - 1) / CY_NUM_BTN_PER_REG;
si->si_ofs.tt_stat_ofs = si->si_ptrs.opcfg->tt_stat_ofs;
si->si_ofs.obj_cfg0 = si->si_ptrs.opcfg->obj_cfg0;
si->si_ofs.max_tchs = si->si_ptrs.opcfg->max_tchs &
CY_BYTE_OFS_MASK;
si->si_ofs.tch_rec_size = si->si_ptrs.opcfg->tch_rec_size &
CY_BYTE_OFS_MASK;
/* Get the old touch fields */
for (abs = CY_TCH_X; abs < CY_NUM_TCH_FIELDS; abs++) {
tch = &si->si_ofs.tch_abs[abs];
tch_old = &si->si_ptrs.opcfg->tch_rec_old[abs];
tch->ofs = tch_old->loc & CY_BYTE_OFS_MASK;
tch->size = cyttsp4_bits_2_bytes(tch_old->size,
&tch->max);
tch->bofs = (tch_old->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT;
}
/* button fields */
si->si_ofs.btn_rec_size = si->si_ptrs.opcfg->btn_rec_size;
si->si_ofs.btn_diff_ofs = si->si_ptrs.opcfg->btn_diff_ofs;
si->si_ofs.btn_diff_size = si->si_ptrs.opcfg->btn_diff_size;
if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE) {
/* Get the extended touch fields */
for (i = 0; i < CY_NUM_EXT_TCH_FIELDS; abs++, i++) {
tch = &si->si_ofs.tch_abs[abs];
tch_new = &si->si_ptrs.opcfg->tch_rec_new[i];
tch->ofs = tch_new->loc & CY_BYTE_OFS_MASK;
tch->size = cyttsp4_bits_2_bytes(tch_new->size,
&tch->max);
tch->bofs = (tch_new->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT;
}
}
for (abs = 0; abs < CY_TCH_NUM_ABS; abs++) {
dev_dbg(cd->dev, "%s: tch_rec_%s\n", __func__,
cyttsp4_tch_abs_string[abs]);
dev_dbg(cd->dev, "%s: ofs =%2zd\n", __func__,
si->si_ofs.tch_abs[abs].ofs);
dev_dbg(cd->dev, "%s: siz =%2zd\n", __func__,
si->si_ofs.tch_abs[abs].size);
dev_dbg(cd->dev, "%s: max =%2zd\n", __func__,
si->si_ofs.tch_abs[abs].max);
dev_dbg(cd->dev, "%s: bofs=%2zd\n", __func__,
si->si_ofs.tch_abs[abs].bofs);
}
si->si_ofs.mode_size = si->si_ofs.tt_stat_ofs + 1;
si->si_ofs.data_size = si->si_ofs.max_tchs *
si->si_ptrs.opcfg->tch_rec_size;
cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.opcfg,
si->si_ofs.opcfg_size, "sysinfo_opcfg_data");
return 0;
}
static int cyttsp4_si_get_ddata(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
void *p;
int rc;
si->si_ofs.ddata_size = si->si_ofs.mdata_ofs - si->si_ofs.ddata_ofs;
p = krealloc(si->si_ptrs.ddata, si->si_ofs.ddata_size, GFP_KERNEL);
if (p == NULL) {
dev_err(cd->dev, "%s: fail alloc ddata memory\n", __func__);
return -ENOMEM;
}
si->si_ptrs.ddata = p;
rc = cyttsp4_adap_read(cd, si->si_ofs.ddata_ofs, si->si_ofs.ddata_size,
si->si_ptrs.ddata);
if (rc < 0)
dev_err(cd->dev, "%s: fail read ddata data r=%d\n",
__func__, rc);
else
cyttsp4_pr_buf(cd->dev, cd->pr_buf,
(u8 *)si->si_ptrs.ddata,
si->si_ofs.ddata_size, "sysinfo_ddata");
return rc;
}
static int cyttsp4_si_get_mdata(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
void *p;
int rc;
si->si_ofs.mdata_size = si->si_ofs.map_sz - si->si_ofs.mdata_ofs;
p = krealloc(si->si_ptrs.mdata, si->si_ofs.mdata_size, GFP_KERNEL);
if (p == NULL) {
dev_err(cd->dev, "%s: fail alloc mdata memory\n", __func__);
return -ENOMEM;
}
si->si_ptrs.mdata = p;
rc = cyttsp4_adap_read(cd, si->si_ofs.mdata_ofs, si->si_ofs.mdata_size,
si->si_ptrs.mdata);
if (rc < 0)
dev_err(cd->dev, "%s: fail read mdata data r=%d\n",
__func__, rc);
else
cyttsp4_pr_buf(cd->dev, cd->pr_buf,
(u8 *)si->si_ptrs.mdata,
si->si_ofs.mdata_size, "sysinfo_mdata");
return rc;
}
static int cyttsp4_si_get_btn_data(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
int btn;
int num_defined_keys;
u16 *key_table;
void *p;
int rc = 0;
if (si->si_ofs.num_btns) {
si->si_ofs.btn_keys_size = si->si_ofs.num_btns *
sizeof(struct cyttsp4_btn);
p = krealloc(si->btn, si->si_ofs.btn_keys_size,
GFP_KERNEL|__GFP_ZERO);
if (p == NULL) {
dev_err(cd->dev, "%s: %s\n", __func__,
"fail alloc btn_keys memory");
return -ENOMEM;
}
si->btn = p;
if (cd->cpdata->sett[CY_IC_GRPNUM_BTN_KEYS] == NULL)
num_defined_keys = 0;
else if (cd->cpdata->sett[CY_IC_GRPNUM_BTN_KEYS]->data == NULL)
num_defined_keys = 0;
else
num_defined_keys = cd->cpdata->sett
[CY_IC_GRPNUM_BTN_KEYS]->size;
for (btn = 0; btn < si->si_ofs.num_btns &&
btn < num_defined_keys; btn++) {
key_table = (u16 *)cd->cpdata->sett
[CY_IC_GRPNUM_BTN_KEYS]->data;
si->btn[btn].key_code = key_table[btn];
si->btn[btn].state = CY_BTN_RELEASED;
si->btn[btn].enabled = true;
}
for (; btn < si->si_ofs.num_btns; btn++) {
si->btn[btn].key_code = KEY_RESERVED;
si->btn[btn].state = CY_BTN_RELEASED;
si->btn[btn].enabled = true;
}
return rc;
}
si->si_ofs.btn_keys_size = 0;
kfree(si->btn);
si->btn = NULL;
return rc;
}
static int cyttsp4_si_get_op_data_ptrs(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
void *p;
p = krealloc(si->xy_mode, si->si_ofs.mode_size, GFP_KERNEL|__GFP_ZERO);
if (p == NULL)
return -ENOMEM;
si->xy_mode = p;
p = krealloc(si->xy_data, si->si_ofs.data_size, GFP_KERNEL|__GFP_ZERO);
if (p == NULL)
return -ENOMEM;
si->xy_data = p;
p = krealloc(si->btn_rec_data,
si->si_ofs.btn_rec_size * si->si_ofs.num_btns,
GFP_KERNEL|__GFP_ZERO);
if (p == NULL)
return -ENOMEM;
si->btn_rec_data = p;
return 0;
}
static void cyttsp4_si_put_log_data(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
dev_dbg(cd->dev, "%s: cydata_ofs =%4zd siz=%4zd\n", __func__,
si->si_ofs.cydata_ofs, si->si_ofs.cydata_size);
dev_dbg(cd->dev, "%s: test_ofs =%4zd siz=%4zd\n", __func__,
si->si_ofs.test_ofs, si->si_ofs.test_size);
dev_dbg(cd->dev, "%s: pcfg_ofs =%4zd siz=%4zd\n", __func__,
si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size);
dev_dbg(cd->dev, "%s: opcfg_ofs =%4zd siz=%4zd\n", __func__,
si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size);
dev_dbg(cd->dev, "%s: ddata_ofs =%4zd siz=%4zd\n", __func__,
si->si_ofs.ddata_ofs, si->si_ofs.ddata_size);
dev_dbg(cd->dev, "%s: mdata_ofs =%4zd siz=%4zd\n", __func__,
si->si_ofs.mdata_ofs, si->si_ofs.mdata_size);
dev_dbg(cd->dev, "%s: cmd_ofs =%4zd\n", __func__,
si->si_ofs.cmd_ofs);
dev_dbg(cd->dev, "%s: rep_ofs =%4zd\n", __func__,
si->si_ofs.rep_ofs);
dev_dbg(cd->dev, "%s: rep_sz =%4zd\n", __func__,
si->si_ofs.rep_sz);
dev_dbg(cd->dev, "%s: num_btns =%4zd\n", __func__,
si->si_ofs.num_btns);
dev_dbg(cd->dev, "%s: num_btn_regs =%4zd\n", __func__,
si->si_ofs.num_btn_regs);
dev_dbg(cd->dev, "%s: tt_stat_ofs =%4zd\n", __func__,
si->si_ofs.tt_stat_ofs);
dev_dbg(cd->dev, "%s: tch_rec_size =%4zd\n", __func__,
si->si_ofs.tch_rec_size);
dev_dbg(cd->dev, "%s: max_tchs =%4zd\n", __func__,
si->si_ofs.max_tchs);
dev_dbg(cd->dev, "%s: mode_size =%4zd\n", __func__,
si->si_ofs.mode_size);
dev_dbg(cd->dev, "%s: data_size =%4zd\n", __func__,
si->si_ofs.data_size);
dev_dbg(cd->dev, "%s: map_sz =%4zd\n", __func__,
si->si_ofs.map_sz);
dev_dbg(cd->dev, "%s: btn_rec_size =%2zd\n", __func__,
si->si_ofs.btn_rec_size);
dev_dbg(cd->dev, "%s: btn_diff_ofs =%2zd\n", __func__,
si->si_ofs.btn_diff_ofs);
dev_dbg(cd->dev, "%s: btn_diff_size =%2zd\n", __func__,
si->si_ofs.btn_diff_size);
dev_dbg(cd->dev, "%s: max_x = 0x%04zX (%zd)\n", __func__,
si->si_ofs.max_x, si->si_ofs.max_x);
dev_dbg(cd->dev, "%s: x_origin = %zd (%s)\n", __func__,
si->si_ofs.x_origin,
si->si_ofs.x_origin == CY_NORMAL_ORIGIN ?
"left corner" : "right corner");
dev_dbg(cd->dev, "%s: max_y = 0x%04zX (%zd)\n", __func__,
si->si_ofs.max_y, si->si_ofs.max_y);
dev_dbg(cd->dev, "%s: y_origin = %zd (%s)\n", __func__,
si->si_ofs.y_origin,
si->si_ofs.y_origin == CY_NORMAL_ORIGIN ?
"upper corner" : "lower corner");
dev_dbg(cd->dev, "%s: max_p = 0x%04zX (%zd)\n", __func__,
si->si_ofs.max_p, si->si_ofs.max_p);
dev_dbg(cd->dev, "%s: xy_mode=%p xy_data=%p\n", __func__,
si->xy_mode, si->xy_data);
}
static int cyttsp4_get_sysinfo_regs(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
int rc;
rc = cyttsp4_si_data_offsets(cd);
if (rc < 0)
return rc;
rc = cyttsp4_si_get_cydata(cd);
if (rc < 0)
return rc;
rc = cyttsp4_si_get_test_data(cd);
if (rc < 0)
return rc;
rc = cyttsp4_si_get_pcfg_data(cd);
if (rc < 0)
return rc;
rc = cyttsp4_si_get_opcfg_data(cd);
if (rc < 0)
return rc;
rc = cyttsp4_si_get_ddata(cd);
if (rc < 0)
return rc;
rc = cyttsp4_si_get_mdata(cd);
if (rc < 0)
return rc;
rc = cyttsp4_si_get_btn_data(cd);
if (rc < 0)
return rc;
rc = cyttsp4_si_get_op_data_ptrs(cd);
if (rc < 0) {
dev_err(cd->dev, "%s: failed to get_op_data\n",
__func__);
return rc;
}
cyttsp4_si_put_log_data(cd);
/* provide flow control handshake */
rc = cyttsp4_handshake(cd, si->si_data.hst_mode);
if (rc < 0)
dev_err(cd->dev, "%s: handshake fail on sysinfo reg\n",
__func__);
si->ready = true;
return rc;
}
static void cyttsp4_queue_startup_(struct cyttsp4 *cd)
{
if (cd->startup_state == STARTUP_NONE) {
cd->startup_state = STARTUP_QUEUED;
schedule_work(&cd->startup_work);
dev_dbg(cd->dev, "%s: cyttsp4_startup queued\n", __func__);
} else {
dev_dbg(cd->dev, "%s: startup_state = %d\n", __func__,
cd->startup_state);
}
}
static void cyttsp4_report_slot_liftoff(struct cyttsp4_mt_data *md,
int max_slots)
{
int t;
if (md->num_prv_tch == 0)
return;
for (t = 0; t < max_slots; t++) {
input_mt_slot(md->input, t);
input_mt_report_slot_inactive(md->input);
}
}
static void cyttsp4_lift_all(struct cyttsp4_mt_data *md)
{
if (!md->si)
return;
if (md->num_prv_tch != 0) {
cyttsp4_report_slot_liftoff(md,
md->si->si_ofs.tch_abs[CY_TCH_T].max);
input_sync(md->input);
md->num_prv_tch = 0;
}
}
static void cyttsp4_get_touch_axis(struct cyttsp4_mt_data *md,
int *axis, int size, int max, u8 *xy_data, int bofs)
{
int nbyte;
int next;
for (nbyte = 0, *axis = 0, next = 0; nbyte < size; nbyte++) {
dev_vdbg(&md->input->dev,
"%s: *axis=%02X(%d) size=%d max=%08X xy_data=%p"
" xy_data[%d]=%02X(%d) bofs=%d\n",
__func__, *axis, *axis, size, max, xy_data, next,
xy_data[next], xy_data[next], bofs);
*axis = (*axis * 256) + (xy_data[next] >> bofs);
next++;
}
*axis &= max - 1;
dev_vdbg(&md->input->dev,
"%s: *axis=%02X(%d) size=%d max=%08X xy_data=%p"
" xy_data[%d]=%02X(%d)\n",
__func__, *axis, *axis, size, max, xy_data, next,
xy_data[next], xy_data[next]);
}
static void cyttsp4_get_touch(struct cyttsp4_mt_data *md,
struct cyttsp4_touch *touch, u8 *xy_data)
{
struct device *dev = &md->input->dev;
struct cyttsp4_sysinfo *si = md->si;
enum cyttsp4_tch_abs abs;
bool flipped;
for (abs = CY_TCH_X; abs < CY_TCH_NUM_ABS; abs++) {
cyttsp4_get_touch_axis(md, &touch->abs[abs],
si->si_ofs.tch_abs[abs].size,
si->si_ofs.tch_abs[abs].max,
xy_data + si->si_ofs.tch_abs[abs].ofs,
si->si_ofs.tch_abs[abs].bofs);
dev_vdbg(dev, "%s: get %s=%04X(%d)\n", __func__,
cyttsp4_tch_abs_string[abs],
touch->abs[abs], touch->abs[abs]);
}
if (md->pdata->flags & CY_FLAG_FLIP) {
swap(touch->abs[CY_TCH_X], touch->abs[CY_TCH_Y]);
flipped = true;
} else
flipped = false;
if (md->pdata->flags & CY_FLAG_INV_X) {
if (flipped)
touch->abs[CY_TCH_X] = md->si->si_ofs.max_y -
touch->abs[CY_TCH_X];
else
touch->abs[CY_TCH_X] = md->si->si_ofs.max_x -
touch->abs[CY_TCH_X];
}
if (md->pdata->flags & CY_FLAG_INV_Y) {
if (flipped)
touch->abs[CY_TCH_Y] = md->si->si_ofs.max_x -
touch->abs[CY_TCH_Y];
else
touch->abs[CY_TCH_Y] = md->si->si_ofs.max_y -
touch->abs[CY_TCH_Y];
}
dev_vdbg(dev, "%s: flip=%s inv-x=%s inv-y=%s x=%04X(%d) y=%04X(%d)\n",
__func__, flipped ? "true" : "false",
md->pdata->flags & CY_FLAG_INV_X ? "true" : "false",
md->pdata->flags & CY_FLAG_INV_Y ? "true" : "false",
touch->abs[CY_TCH_X], touch->abs[CY_TCH_X],
touch->abs[CY_TCH_Y], touch->abs[CY_TCH_Y]);
}
static void cyttsp4_final_sync(struct input_dev *input, int max_slots, int *ids)
{
int t;
for (t = 0; t < max_slots; t++) {
if (ids[t])
continue;
input_mt_slot(input, t);
input_mt_report_slot_inactive(input);
}
input_sync(input);
}
static void cyttsp4_get_mt_touches(struct cyttsp4_mt_data *md, int num_cur_tch)
{
struct device *dev = &md->input->dev;
struct cyttsp4_sysinfo *si = md->si;
struct cyttsp4_touch tch;
int sig;
int i, j, t = 0;
int ids[max(CY_TMA1036_MAX_TCH, CY_TMA4XX_MAX_TCH)];
memset(ids, 0, si->si_ofs.tch_abs[CY_TCH_T].max * sizeof(int));
for (i = 0; i < num_cur_tch; i++) {
cyttsp4_get_touch(md, &tch, si->xy_data +
(i * si->si_ofs.tch_rec_size));
if ((tch.abs[CY_TCH_T] < md->pdata->frmwrk->abs
[(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MIN_OST]) ||
(tch.abs[CY_TCH_T] > md->pdata->frmwrk->abs
[(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MAX_OST])) {
dev_err(dev, "%s: tch=%d -> bad trk_id=%d max_id=%d\n",
__func__, i, tch.abs[CY_TCH_T],
md->pdata->frmwrk->abs[(CY_ABS_ID_OST *
CY_NUM_ABS_SET) + CY_MAX_OST]);
continue;
}
/* use 0 based track id's */
sig = md->pdata->frmwrk->abs
[(CY_ABS_ID_OST * CY_NUM_ABS_SET) + 0];
if (sig != CY_IGNORE_VALUE) {
t = tch.abs[CY_TCH_T] - md->pdata->frmwrk->abs
[(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MIN_OST];
if (tch.abs[CY_TCH_E] == CY_EV_LIFTOFF) {
dev_dbg(dev, "%s: t=%d e=%d lift-off\n",
__func__, t, tch.abs[CY_TCH_E]);
goto cyttsp4_get_mt_touches_pr_tch;
}
input_mt_slot(md->input, t);
input_mt_report_slot_state(md->input, MT_TOOL_FINGER,
true);
ids[t] = true;
}
/* all devices: position and pressure fields */
for (j = 0; j <= CY_ABS_W_OST; j++) {
sig = md->pdata->frmwrk->abs[((CY_ABS_X_OST + j) *
CY_NUM_ABS_SET) + 0];
if (sig != CY_IGNORE_VALUE)
input_report_abs(md->input, sig,
tch.abs[CY_TCH_X + j]);
}
if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE) {
/*
* TMA400 size and orientation fields:
* if pressure is non-zero and major touch
* signal is zero, then set major and minor touch
* signals to minimum non-zero value
*/
if (tch.abs[CY_TCH_P] > 0 && tch.abs[CY_TCH_MAJ] == 0)
tch.abs[CY_TCH_MAJ] = tch.abs[CY_TCH_MIN] = 1;
/* Get the extended touch fields */
for (j = 0; j < CY_NUM_EXT_TCH_FIELDS; j++) {
sig = md->pdata->frmwrk->abs
[((CY_ABS_MAJ_OST + j) *
CY_NUM_ABS_SET) + 0];
if (sig != CY_IGNORE_VALUE)
input_report_abs(md->input, sig,
tch.abs[CY_TCH_MAJ + j]);
}
}
cyttsp4_get_mt_touches_pr_tch:
if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE)
dev_dbg(dev,
"%s: t=%d x=%d y=%d z=%d M=%d m=%d o=%d e=%d\n",
__func__, t,
tch.abs[CY_TCH_X],
tch.abs[CY_TCH_Y],
tch.abs[CY_TCH_P],
tch.abs[CY_TCH_MAJ],
tch.abs[CY_TCH_MIN],
tch.abs[CY_TCH_OR],
tch.abs[CY_TCH_E]);
else
dev_dbg(dev,
"%s: t=%d x=%d y=%d z=%d e=%d\n", __func__,
t,
tch.abs[CY_TCH_X],
tch.abs[CY_TCH_Y],
tch.abs[CY_TCH_P],
tch.abs[CY_TCH_E]);
}
cyttsp4_final_sync(md->input, si->si_ofs.tch_abs[CY_TCH_T].max, ids);
md->num_prv_tch = num_cur_tch;
return;
}
/* read xy_data for all current touches */
static int cyttsp4_xy_worker(struct cyttsp4 *cd)
{
struct cyttsp4_mt_data *md = &cd->md;
struct device *dev = &md->input->dev;
struct cyttsp4_sysinfo *si = md->si;
u8 num_cur_tch;
u8 hst_mode;
u8 rep_len;
u8 rep_stat;
u8 tt_stat;
int rc = 0;
/*
* Get event data from cyttsp4 device.
* The event data includes all data
* for all active touches.
* Event data also includes button data
*/
/*
* Use 2 reads:
* 1st read to get mode + button bytes + touch count (core)
* 2nd read (optional) to get touch 1 - touch n data
*/
hst_mode = si->xy_mode[CY_REG_BASE];
rep_len = si->xy_mode[si->si_ofs.rep_ofs];
rep_stat = si->xy_mode[si->si_ofs.rep_ofs + 1];
tt_stat = si->xy_mode[si->si_ofs.tt_stat_ofs];
dev_vdbg(dev, "%s: %s%02X %s%d %s%02X %s%02X\n", __func__,
"hst_mode=", hst_mode, "rep_len=", rep_len,
"rep_stat=", rep_stat, "tt_stat=", tt_stat);
num_cur_tch = GET_NUM_TOUCHES(tt_stat);
dev_vdbg(dev, "%s: num_cur_tch=%d\n", __func__, num_cur_tch);
if (rep_len == 0 && num_cur_tch > 0) {
dev_err(dev, "%s: report length error rep_len=%d num_tch=%d\n",
__func__, rep_len, num_cur_tch);
goto cyttsp4_xy_worker_exit;
}
/* read touches */
if (num_cur_tch > 0) {
rc = cyttsp4_adap_read(cd, si->si_ofs.tt_stat_ofs + 1,
num_cur_tch * si->si_ofs.tch_rec_size,
si->xy_data);
if (rc < 0) {
dev_err(dev, "%s: read fail on touch regs r=%d\n",
__func__, rc);
goto cyttsp4_xy_worker_exit;
}
}
/* print xy data */
cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_data, num_cur_tch *
si->si_ofs.tch_rec_size, "xy_data");
/* check any error conditions */
if (IS_BAD_PKT(rep_stat)) {
dev_dbg(dev, "%s: Invalid buffer detected\n", __func__);
rc = 0;
goto cyttsp4_xy_worker_exit;
}
if (IS_LARGE_AREA(tt_stat))
dev_dbg(dev, "%s: Large area detected\n", __func__);
if (num_cur_tch > si->si_ofs.max_tchs) {
dev_err(dev, "%s: too many tch; set to max tch (n=%d c=%zd)\n",
__func__, num_cur_tch, si->si_ofs.max_tchs);
num_cur_tch = si->si_ofs.max_tchs;
}
/* extract xy_data for all currently reported touches */
dev_vdbg(dev, "%s: extract data num_cur_tch=%d\n", __func__,
num_cur_tch);
if (num_cur_tch)
cyttsp4_get_mt_touches(md, num_cur_tch);
else
cyttsp4_lift_all(md);
rc = 0;
cyttsp4_xy_worker_exit:
return rc;
}
static int cyttsp4_mt_attention(struct cyttsp4 *cd)
{
struct device *dev = cd->dev;
struct cyttsp4_mt_data *md = &cd->md;
int rc = 0;
if (!md->si)
return 0;
mutex_lock(&md->report_lock);
if (!md->is_suspended) {
/* core handles handshake */
rc = cyttsp4_xy_worker(cd);
} else {
dev_vdbg(dev, "%s: Ignoring report while suspended\n",
__func__);
}
mutex_unlock(&md->report_lock);
if (rc < 0)
dev_err(dev, "%s: xy_worker error r=%d\n", __func__, rc);
return rc;
}
static irqreturn_t cyttsp4_irq(int irq, void *handle)
{
struct cyttsp4 *cd = handle;
struct device *dev = cd->dev;
enum cyttsp4_mode cur_mode;
u8 cmd_ofs = cd->sysinfo.si_ofs.cmd_ofs;
u8 mode[3];
int rc;
/*
* Check whether this IRQ should be ignored (external)
* This should be the very first thing to check since
* ignore_irq may be set for a very short period of time
*/
if (atomic_read(&cd->ignore_irq)) {
dev_vdbg(dev, "%s: Ignoring IRQ\n", __func__);
return IRQ_HANDLED;
}
dev_dbg(dev, "%s int:0x%x\n", __func__, cd->int_status);
mutex_lock(&cd->system_lock);
/* Just to debug */
if (cd->sleep_state == SS_SLEEP_ON || cd->sleep_state == SS_SLEEPING)
dev_vdbg(dev, "%s: Received IRQ while in sleep\n", __func__);
rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), mode);
if (rc) {
dev_err(cd->dev, "%s: Fail read adapter r=%d\n", __func__, rc);
goto cyttsp4_irq_exit;
}
dev_vdbg(dev, "%s mode[0-2]:0x%X 0x%X 0x%X\n", __func__,
mode[0], mode[1], mode[2]);
if (IS_BOOTLOADER(mode[0], mode[1])) {
cur_mode = CY_MODE_BOOTLOADER;
dev_vdbg(dev, "%s: bl running\n", __func__);
if (cd->mode == CY_MODE_BOOTLOADER) {
/* Signal bootloader heartbeat heard */
wake_up(&cd->wait_q);
goto cyttsp4_irq_exit;
}
/* switch to bootloader */
dev_dbg(dev, "%s: restart switch to bl m=%d -> m=%d\n",
__func__, cd->mode, cur_mode);
/* catch operation->bl glitch */
if (cd->mode != CY_MODE_UNKNOWN) {
/* Incase startup_state do not let startup_() */
cd->mode = CY_MODE_UNKNOWN;
cyttsp4_queue_startup_(cd);
goto cyttsp4_irq_exit;
}
/*
* do not wake thread on this switch since
* it is possible to get an early heartbeat
* prior to performing the reset
*/
cd->mode = cur_mode;
goto cyttsp4_irq_exit;
}
switch (mode[0] & CY_HST_MODE) {
case CY_HST_OPERATE:
cur_mode = CY_MODE_OPERATIONAL;
dev_vdbg(dev, "%s: operational\n", __func__);
break;
case CY_HST_CAT:
cur_mode = CY_MODE_CAT;
dev_vdbg(dev, "%s: CaT\n", __func__);
break;
case CY_HST_SYSINFO:
cur_mode = CY_MODE_SYSINFO;
dev_vdbg(dev, "%s: sysinfo\n", __func__);
break;
default:
cur_mode = CY_MODE_UNKNOWN;
dev_err(dev, "%s: unknown HST mode 0x%02X\n", __func__,
mode[0]);
break;
}
/* Check whether this IRQ should be ignored (internal) */
if (cd->int_status & CY_INT_IGNORE) {
dev_vdbg(dev, "%s: Ignoring IRQ\n", __func__);
goto cyttsp4_irq_exit;
}
/* Check for wake up interrupt */
if (cd->int_status & CY_INT_AWAKE) {
cd->int_status &= ~CY_INT_AWAKE;
wake_up(&cd->wait_q);
dev_vdbg(dev, "%s: Received wake up interrupt\n", __func__);
goto cyttsp4_irq_handshake;
}
/* Expecting mode change interrupt */
if ((cd->int_status & CY_INT_MODE_CHANGE)
&& (mode[0] & CY_HST_MODE_CHANGE) == 0) {
cd->int_status &= ~CY_INT_MODE_CHANGE;
dev_dbg(dev, "%s: finish mode switch m=%d -> m=%d\n",
__func__, cd->mode, cur_mode);
cd->mode = cur_mode;
wake_up(&cd->wait_q);
goto cyttsp4_irq_handshake;
}
/* compare current core mode to current device mode */
dev_vdbg(dev, "%s: cd->mode=%d cur_mode=%d\n",
__func__, cd->mode, cur_mode);
if ((mode[0] & CY_HST_MODE_CHANGE) == 0 && cd->mode != cur_mode) {
/* Unexpected mode change occurred */
dev_err(dev, "%s %d->%d 0x%x\n", __func__, cd->mode,
cur_mode, cd->int_status);
dev_dbg(dev, "%s: Unexpected mode change, startup\n",
__func__);
cyttsp4_queue_startup_(cd);
goto cyttsp4_irq_exit;
}
/* Expecting command complete interrupt */
dev_vdbg(dev, "%s: command byte:0x%x\n", __func__, mode[cmd_ofs]);
if ((cd->int_status & CY_INT_EXEC_CMD)
&& mode[cmd_ofs] & CY_CMD_COMPLETE) {
cd->int_status &= ~CY_INT_EXEC_CMD;
dev_vdbg(dev, "%s: Received command complete interrupt\n",
__func__);
wake_up(&cd->wait_q);
/*
* It is possible to receive a single interrupt for
* command complete and touch/button status report.
* Continue processing for a possible status report.
*/
}
/* This should be status report, read status regs */
if (cd->mode == CY_MODE_OPERATIONAL) {
dev_vdbg(dev, "%s: Read status registers\n", __func__);
rc = cyttsp4_load_status_regs(cd);
if (rc < 0)
dev_err(dev, "%s: fail read mode regs r=%d\n",
__func__, rc);
}
cyttsp4_mt_attention(cd);
cyttsp4_irq_handshake:
/* handshake the event */
dev_vdbg(dev, "%s: Handshake mode=0x%02X r=%d\n",
__func__, mode[0], rc);
rc = cyttsp4_handshake(cd, mode[0]);
if (rc < 0)
dev_err(dev, "%s: Fail handshake mode=0x%02X r=%d\n",
__func__, mode[0], rc);
/*
* a non-zero udelay period is required for using
* IRQF_TRIGGER_LOW in order to delay until the
* device completes isr deassert
*/
udelay(cd->cpdata->level_irq_udelay);
cyttsp4_irq_exit:
mutex_unlock(&cd->system_lock);
return IRQ_HANDLED;
}
static void cyttsp4_start_wd_timer(struct cyttsp4 *cd)
{
if (!CY_WATCHDOG_TIMEOUT)
return;
mod_timer(&cd->watchdog_timer, jiffies +
msecs_to_jiffies(CY_WATCHDOG_TIMEOUT));
}
static void cyttsp4_stop_wd_timer(struct cyttsp4 *cd)
{
if (!CY_WATCHDOG_TIMEOUT)
return;
/*
* Ensure we wait until the watchdog timer
* running on a different CPU finishes
*/
timer_shutdown_sync(&cd->watchdog_timer);
cancel_work_sync(&cd->watchdog_work);
}
static void cyttsp4_watchdog_timer(struct timer_list *t)
{
struct cyttsp4 *cd = from_timer(cd, t, watchdog_timer);
dev_vdbg(cd->dev, "%s: Watchdog timer triggered\n", __func__);
schedule_work(&cd->watchdog_work);
return;
}
static int cyttsp4_request_exclusive(struct cyttsp4 *cd, void *ownptr,
int timeout_ms)
{
int t = msecs_to_jiffies(timeout_ms);
bool with_timeout = (timeout_ms != 0);
mutex_lock(&cd->system_lock);
if (!cd->exclusive_dev && cd->exclusive_waits == 0) {
cd->exclusive_dev = ownptr;
goto exit;
}
cd->exclusive_waits++;
wait:
mutex_unlock(&cd->system_lock);
if (with_timeout) {
t = wait_event_timeout(cd->wait_q, !cd->exclusive_dev, t);
if (IS_TMO(t)) {
dev_err(cd->dev, "%s: tmo waiting exclusive access\n",
__func__);
mutex_lock(&cd->system_lock);
cd->exclusive_waits--;
mutex_unlock(&cd->system_lock);
return -ETIME;
}
} else {
wait_event(cd->wait_q, !cd->exclusive_dev);
}
mutex_lock(&cd->system_lock);
if (cd->exclusive_dev)
goto wait;
cd->exclusive_dev = ownptr;
cd->exclusive_waits--;
exit:
mutex_unlock(&cd->system_lock);
return 0;
}
/*
* returns error if was not owned
*/
static int cyttsp4_release_exclusive(struct cyttsp4 *cd, void *ownptr)
{
mutex_lock(&cd->system_lock);
if (cd->exclusive_dev != ownptr) {
mutex_unlock(&cd->system_lock);
return -EINVAL;
}
dev_vdbg(cd->dev, "%s: exclusive_dev %p freed\n",
__func__, cd->exclusive_dev);
cd->exclusive_dev = NULL;
wake_up(&cd->wait_q);
mutex_unlock(&cd->system_lock);
return 0;
}
static int cyttsp4_wait_bl_heartbeat(struct cyttsp4 *cd)
{
long t;
int rc = 0;
/* wait heartbeat */
dev_vdbg(cd->dev, "%s: wait heartbeat...\n", __func__);
t = wait_event_timeout(cd->wait_q, cd->mode == CY_MODE_BOOTLOADER,
msecs_to_jiffies(CY_CORE_RESET_AND_WAIT_TIMEOUT));
if (IS_TMO(t)) {
dev_err(cd->dev, "%s: tmo waiting bl heartbeat cd->mode=%d\n",
__func__, cd->mode);
rc = -ETIME;
}
return rc;
}
static int cyttsp4_wait_sysinfo_mode(struct cyttsp4 *cd)
{
long t;
dev_vdbg(cd->dev, "%s: wait sysinfo...\n", __func__);
t = wait_event_timeout(cd->wait_q, cd->mode == CY_MODE_SYSINFO,
msecs_to_jiffies(CY_CORE_MODE_CHANGE_TIMEOUT));
if (IS_TMO(t)) {
dev_err(cd->dev, "%s: tmo waiting exit bl cd->mode=%d\n",
__func__, cd->mode);
mutex_lock(&cd->system_lock);
cd->int_status &= ~CY_INT_MODE_CHANGE;
mutex_unlock(&cd->system_lock);
return -ETIME;
}
return 0;
}
static int cyttsp4_reset_and_wait(struct cyttsp4 *cd)
{
int rc;
/* reset hardware */
mutex_lock(&cd->system_lock);
dev_dbg(cd->dev, "%s: reset hw...\n", __func__);
rc = cyttsp4_hw_reset(cd);
cd->mode = CY_MODE_UNKNOWN;
mutex_unlock(&cd->system_lock);
if (rc < 0) {
dev_err(cd->dev, "%s:Fail hw reset r=%d\n", __func__, rc);
return rc;
}
return cyttsp4_wait_bl_heartbeat(cd);
}
/*
* returns err if refused or timeout; block until mode change complete
* bit is set (mode change interrupt)
*/
static int cyttsp4_set_mode(struct cyttsp4 *cd, int new_mode)
{
u8 new_dev_mode;
u8 mode;
long t;
int rc;
switch (new_mode) {
case CY_MODE_OPERATIONAL:
new_dev_mode = CY_HST_OPERATE;
break;
case CY_MODE_SYSINFO:
new_dev_mode = CY_HST_SYSINFO;
break;
case CY_MODE_CAT:
new_dev_mode = CY_HST_CAT;
break;
default:
dev_err(cd->dev, "%s: invalid mode: %02X(%d)\n",
__func__, new_mode, new_mode);
return -EINVAL;
}
/* change mode */
dev_dbg(cd->dev, "%s: %s=%p new_dev_mode=%02X new_mode=%d\n",
__func__, "have exclusive", cd->exclusive_dev,
new_dev_mode, new_mode);
mutex_lock(&cd->system_lock);
rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
if (rc < 0) {
mutex_unlock(&cd->system_lock);
dev_err(cd->dev, "%s: Fail read mode r=%d\n",
__func__, rc);
goto exit;
}
/* Clear device mode bits and set to new mode */
mode &= ~CY_HST_MODE;
mode |= new_dev_mode | CY_HST_MODE_CHANGE;
cd->int_status |= CY_INT_MODE_CHANGE;
rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(mode), &mode);
mutex_unlock(&cd->system_lock);
if (rc < 0) {
dev_err(cd->dev, "%s: Fail write mode change r=%d\n",
__func__, rc);
goto exit;
}
/* wait for mode change done interrupt */
t = wait_event_timeout(cd->wait_q,
(cd->int_status & CY_INT_MODE_CHANGE) == 0,
msecs_to_jiffies(CY_CORE_MODE_CHANGE_TIMEOUT));
dev_dbg(cd->dev, "%s: back from wait t=%ld cd->mode=%d\n",
__func__, t, cd->mode);
if (IS_TMO(t)) {
dev_err(cd->dev, "%s: %s\n", __func__,
"tmo waiting mode change");
mutex_lock(&cd->system_lock);
cd->int_status &= ~CY_INT_MODE_CHANGE;
mutex_unlock(&cd->system_lock);
rc = -EINVAL;
}
exit:
return rc;
}
static void cyttsp4_watchdog_work(struct work_struct *work)
{
struct cyttsp4 *cd =
container_of(work, struct cyttsp4, watchdog_work);
u8 *mode;
int retval;
mutex_lock(&cd->system_lock);
retval = cyttsp4_load_status_regs(cd);
if (retval < 0) {
dev_err(cd->dev,
"%s: failed to access device in watchdog timer r=%d\n",
__func__, retval);
cyttsp4_queue_startup_(cd);
goto cyttsp4_timer_watchdog_exit_error;
}
mode = &cd->sysinfo.xy_mode[CY_REG_BASE];
if (IS_BOOTLOADER(mode[0], mode[1])) {
dev_err(cd->dev,
"%s: device found in bootloader mode when operational mode\n",
__func__);
cyttsp4_queue_startup_(cd);
goto cyttsp4_timer_watchdog_exit_error;
}
cyttsp4_start_wd_timer(cd);
cyttsp4_timer_watchdog_exit_error:
mutex_unlock(&cd->system_lock);
return;
}
static int cyttsp4_core_sleep_(struct cyttsp4 *cd)
{
enum cyttsp4_sleep_state ss = SS_SLEEP_ON;
enum cyttsp4_int_state int_status = CY_INT_IGNORE;
int rc = 0;
u8 mode[2];
/* Already in sleep mode? */
mutex_lock(&cd->system_lock);
if (cd->sleep_state == SS_SLEEP_ON) {
mutex_unlock(&cd->system_lock);
return 0;
}
cd->sleep_state = SS_SLEEPING;
mutex_unlock(&cd->system_lock);
cyttsp4_stop_wd_timer(cd);
/* Wait until currently running IRQ handler exits and disable IRQ */
disable_irq(cd->irq);
dev_vdbg(cd->dev, "%s: write DEEP SLEEP...\n", __func__);
mutex_lock(&cd->system_lock);
rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
if (rc) {
mutex_unlock(&cd->system_lock);
dev_err(cd->dev, "%s: Fail read adapter r=%d\n", __func__, rc);
goto error;
}
if (IS_BOOTLOADER(mode[0], mode[1])) {
mutex_unlock(&cd->system_lock);
dev_err(cd->dev, "%s: Device in BOOTLOADER mode.\n", __func__);
rc = -EINVAL;
goto error;
}
mode[0] |= CY_HST_SLEEP;
rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(mode[0]), &mode[0]);
mutex_unlock(&cd->system_lock);
if (rc) {
dev_err(cd->dev, "%s: Fail write adapter r=%d\n", __func__, rc);
goto error;
}
dev_vdbg(cd->dev, "%s: write DEEP SLEEP succeeded\n", __func__);
if (cd->cpdata->power) {
dev_dbg(cd->dev, "%s: Power down HW\n", __func__);
rc = cd->cpdata->power(cd->cpdata, 0, cd->dev, &cd->ignore_irq);
} else {
dev_dbg(cd->dev, "%s: No power function\n", __func__);
rc = 0;
}
if (rc < 0) {
dev_err(cd->dev, "%s: HW Power down fails r=%d\n",
__func__, rc);
goto error;
}
/* Give time to FW to sleep */
msleep(50);
goto exit;
error:
ss = SS_SLEEP_OFF;
int_status = CY_INT_NONE;
cyttsp4_start_wd_timer(cd);
exit:
mutex_lock(&cd->system_lock);
cd->sleep_state = ss;
cd->int_status |= int_status;
mutex_unlock(&cd->system_lock);
enable_irq(cd->irq);
return rc;
}
static int cyttsp4_startup_(struct cyttsp4 *cd)
{
int retry = CY_CORE_STARTUP_RETRY_COUNT;
int rc;
cyttsp4_stop_wd_timer(cd);
reset:
if (retry != CY_CORE_STARTUP_RETRY_COUNT)
dev_dbg(cd->dev, "%s: Retry %d\n", __func__,
CY_CORE_STARTUP_RETRY_COUNT - retry);
/* reset hardware and wait for heartbeat */
rc = cyttsp4_reset_and_wait(cd);
if (rc < 0) {
dev_err(cd->dev, "%s: Error on h/w reset r=%d\n", __func__, rc);
if (retry--)
goto reset;
goto exit;
}
/* exit bl into sysinfo mode */
dev_vdbg(cd->dev, "%s: write exit ldr...\n", __func__);
mutex_lock(&cd->system_lock);
cd->int_status &= ~CY_INT_IGNORE;
cd->int_status |= CY_INT_MODE_CHANGE;
rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(ldr_exit),
(u8 *)ldr_exit);
mutex_unlock(&cd->system_lock);
if (rc < 0) {
dev_err(cd->dev, "%s: Fail write r=%d\n", __func__, rc);
if (retry--)
goto reset;
goto exit;
}
rc = cyttsp4_wait_sysinfo_mode(cd);
if (rc < 0) {
u8 buf[sizeof(ldr_err_app)];
int rc1;
/* Check for invalid/corrupted touch application */
rc1 = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(ldr_err_app),
buf);
if (rc1) {
dev_err(cd->dev, "%s: Fail read r=%d\n", __func__, rc1);
} else if (!memcmp(buf, ldr_err_app, sizeof(ldr_err_app))) {
dev_err(cd->dev, "%s: Error launching touch application\n",
__func__);
mutex_lock(&cd->system_lock);
cd->invalid_touch_app = true;
mutex_unlock(&cd->system_lock);
goto exit_no_wd;
}
if (retry--)
goto reset;
goto exit;
}
mutex_lock(&cd->system_lock);
cd->invalid_touch_app = false;
mutex_unlock(&cd->system_lock);
/* read sysinfo data */
dev_vdbg(cd->dev, "%s: get sysinfo regs..\n", __func__);
rc = cyttsp4_get_sysinfo_regs(cd);
if (rc < 0) {
dev_err(cd->dev, "%s: failed to get sysinfo regs rc=%d\n",
__func__, rc);
if (retry--)
goto reset;
goto exit;
}
rc = cyttsp4_set_mode(cd, CY_MODE_OPERATIONAL);
if (rc < 0) {
dev_err(cd->dev, "%s: failed to set mode to operational rc=%d\n",
__func__, rc);
if (retry--)
goto reset;
goto exit;
}
cyttsp4_lift_all(&cd->md);
/* restore to sleep if was suspended */
mutex_lock(&cd->system_lock);
if (cd->sleep_state == SS_SLEEP_ON) {
cd->sleep_state = SS_SLEEP_OFF;
mutex_unlock(&cd->system_lock);
cyttsp4_core_sleep_(cd);
goto exit_no_wd;
}
mutex_unlock(&cd->system_lock);
exit:
cyttsp4_start_wd_timer(cd);
exit_no_wd:
return rc;
}
static int cyttsp4_startup(struct cyttsp4 *cd)
{
int rc;
mutex_lock(&cd->system_lock);
cd->startup_state = STARTUP_RUNNING;
mutex_unlock(&cd->system_lock);
rc = cyttsp4_request_exclusive(cd, cd->dev,
CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
if (rc < 0) {
dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
__func__, cd->exclusive_dev, cd->dev);
goto exit;
}
rc = cyttsp4_startup_(cd);
if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
/* Don't return fail code, mode is already changed. */
dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
else
dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
exit:
mutex_lock(&cd->system_lock);
cd->startup_state = STARTUP_NONE;
mutex_unlock(&cd->system_lock);
/* Wake the waiters for end of startup */
wake_up(&cd->wait_q);
return rc;
}
static void cyttsp4_startup_work_function(struct work_struct *work)
{
struct cyttsp4 *cd = container_of(work, struct cyttsp4, startup_work);
int rc;
rc = cyttsp4_startup(cd);
if (rc < 0)
dev_err(cd->dev, "%s: Fail queued startup r=%d\n",
__func__, rc);
}
static void cyttsp4_free_si_ptrs(struct cyttsp4 *cd)
{
struct cyttsp4_sysinfo *si = &cd->sysinfo;
if (!si)
return;
kfree(si->si_ptrs.cydata);
kfree(si->si_ptrs.test);
kfree(si->si_ptrs.pcfg);
kfree(si->si_ptrs.opcfg);
kfree(si->si_ptrs.ddata);
kfree(si->si_ptrs.mdata);
kfree(si->btn);
kfree(si->xy_mode);
kfree(si->xy_data);
kfree(si->btn_rec_data);
}
static int cyttsp4_core_sleep(struct cyttsp4 *cd)
{
int rc;
rc = cyttsp4_request_exclusive(cd, cd->dev,
CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT);
if (rc < 0) {
dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
__func__, cd->exclusive_dev, cd->dev);
return 0;
}
rc = cyttsp4_core_sleep_(cd);
if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
else
dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
return rc;
}
static int cyttsp4_core_wake_(struct cyttsp4 *cd)
{
struct device *dev = cd->dev;
int rc;
u8 mode;
int t;
/* Already woken? */
mutex_lock(&cd->system_lock);
if (cd->sleep_state == SS_SLEEP_OFF) {
mutex_unlock(&cd->system_lock);
return 0;
}
cd->int_status &= ~CY_INT_IGNORE;
cd->int_status |= CY_INT_AWAKE;
cd->sleep_state = SS_WAKING;
if (cd->cpdata->power) {
dev_dbg(dev, "%s: Power up HW\n", __func__);
rc = cd->cpdata->power(cd->cpdata, 1, dev, &cd->ignore_irq);
} else {
dev_dbg(dev, "%s: No power function\n", __func__);
rc = -ENOSYS;
}
if (rc < 0) {
dev_err(dev, "%s: HW Power up fails r=%d\n",
__func__, rc);
/* Initiate a read transaction to wake up */
cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
} else
dev_vdbg(cd->dev, "%s: HW power up succeeds\n",
__func__);
mutex_unlock(&cd->system_lock);
t = wait_event_timeout(cd->wait_q,
(cd->int_status & CY_INT_AWAKE) == 0,
msecs_to_jiffies(CY_CORE_WAKEUP_TIMEOUT));
if (IS_TMO(t)) {
dev_err(dev, "%s: TMO waiting for wakeup\n", __func__);
mutex_lock(&cd->system_lock);
cd->int_status &= ~CY_INT_AWAKE;
/* Try starting up */
cyttsp4_queue_startup_(cd);
mutex_unlock(&cd->system_lock);
}
mutex_lock(&cd->system_lock);
cd->sleep_state = SS_SLEEP_OFF;
mutex_unlock(&cd->system_lock);
cyttsp4_start_wd_timer(cd);
return 0;
}
static int cyttsp4_core_wake(struct cyttsp4 *cd)
{
int rc;
rc = cyttsp4_request_exclusive(cd, cd->dev,
CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
if (rc < 0) {
dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
__func__, cd->exclusive_dev, cd->dev);
return 0;
}
rc = cyttsp4_core_wake_(cd);
if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
else
dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
return rc;
}
static int cyttsp4_core_suspend(struct device *dev)
{
struct cyttsp4 *cd = dev_get_drvdata(dev);
struct cyttsp4_mt_data *md = &cd->md;
int rc;
md->is_suspended = true;
rc = cyttsp4_core_sleep(cd);
if (rc < 0) {
dev_err(dev, "%s: Error on sleep\n", __func__);
return -EAGAIN;
}
return 0;
}
static int cyttsp4_core_resume(struct device *dev)
{
struct cyttsp4 *cd = dev_get_drvdata(dev);
struct cyttsp4_mt_data *md = &cd->md;
int rc;
md->is_suspended = false;
rc = cyttsp4_core_wake(cd);
if (rc < 0) {
dev_err(dev, "%s: Error on wake\n", __func__);
return -EAGAIN;
}
return 0;
}
EXPORT_GPL_RUNTIME_DEV_PM_OPS(cyttsp4_pm_ops,
cyttsp4_core_suspend, cyttsp4_core_resume, NULL);
static int cyttsp4_mt_open(struct input_dev *input)
{
pm_runtime_get(input->dev.parent);
return 0;
}
static void cyttsp4_mt_close(struct input_dev *input)
{
struct cyttsp4_mt_data *md = input_get_drvdata(input);
mutex_lock(&md->report_lock);
if (!md->is_suspended)
pm_runtime_put(input->dev.parent);
mutex_unlock(&md->report_lock);
}
static int cyttsp4_setup_input_device(struct cyttsp4 *cd)
{
struct device *dev = cd->dev;
struct cyttsp4_mt_data *md = &cd->md;
int signal = CY_IGNORE_VALUE;
int max_x, max_y, max_p, min, max;
int max_x_tmp, max_y_tmp;
int i;
int rc;
dev_vdbg(dev, "%s: Initialize event signals\n", __func__);
__set_bit(EV_ABS, md->input->evbit);
__set_bit(EV_REL, md->input->evbit);
__set_bit(EV_KEY, md->input->evbit);
max_x_tmp = md->si->si_ofs.max_x;
max_y_tmp = md->si->si_ofs.max_y;
/* get maximum values from the sysinfo data */
if (md->pdata->flags & CY_FLAG_FLIP) {
max_x = max_y_tmp - 1;
max_y = max_x_tmp - 1;
} else {
max_x = max_x_tmp - 1;
max_y = max_y_tmp - 1;
}
max_p = md->si->si_ofs.max_p;
/* set event signal capabilities */
for (i = 0; i < (md->pdata->frmwrk->size / CY_NUM_ABS_SET); i++) {
signal = md->pdata->frmwrk->abs
[(i * CY_NUM_ABS_SET) + CY_SIGNAL_OST];
if (signal != CY_IGNORE_VALUE) {
__set_bit(signal, md->input->absbit);
min = md->pdata->frmwrk->abs
[(i * CY_NUM_ABS_SET) + CY_MIN_OST];
max = md->pdata->frmwrk->abs
[(i * CY_NUM_ABS_SET) + CY_MAX_OST];
if (i == CY_ABS_ID_OST) {
/* shift track ids down to start at 0 */
max = max - min;
min = min - min;
} else if (i == CY_ABS_X_OST)
max = max_x;
else if (i == CY_ABS_Y_OST)
max = max_y;
else if (i == CY_ABS_P_OST)
max = max_p;
input_set_abs_params(md->input, signal, min, max,
md->pdata->frmwrk->abs
[(i * CY_NUM_ABS_SET) + CY_FUZZ_OST],
md->pdata->frmwrk->abs
[(i * CY_NUM_ABS_SET) + CY_FLAT_OST]);
dev_dbg(dev, "%s: register signal=%02X min=%d max=%d\n",
__func__, signal, min, max);
if ((i == CY_ABS_ID_OST) &&
(md->si->si_ofs.tch_rec_size <
CY_TMA4XX_TCH_REC_SIZE))
break;
}
}
input_mt_init_slots(md->input, md->si->si_ofs.tch_abs[CY_TCH_T].max,
INPUT_MT_DIRECT);
rc = input_register_device(md->input);
if (rc < 0)
dev_err(dev, "%s: Error, failed register input device r=%d\n",
__func__, rc);
return rc;
}
static int cyttsp4_mt_probe(struct cyttsp4 *cd)
{
struct device *dev = cd->dev;
struct cyttsp4_mt_data *md = &cd->md;
struct cyttsp4_mt_platform_data *pdata = cd->pdata->mt_pdata;
int rc = 0;
mutex_init(&md->report_lock);
md->pdata = pdata;
/* Create the input device and register it. */
dev_vdbg(dev, "%s: Create the input device and register it\n",
__func__);
md->input = input_allocate_device();
if (md->input == NULL) {
dev_err(dev, "%s: Error, failed to allocate input device\n",
__func__);
rc = -ENOSYS;
goto error_alloc_failed;
}
md->input->name = pdata->inp_dev_name;
scnprintf(md->phys, sizeof(md->phys)-1, "%s", dev_name(dev));
md->input->phys = md->phys;
md->input->id.bustype = cd->bus_ops->bustype;
md->input->dev.parent = dev;
md->input->open = cyttsp4_mt_open;
md->input->close = cyttsp4_mt_close;
input_set_drvdata(md->input, md);
/* get sysinfo */
md->si = &cd->sysinfo;
rc = cyttsp4_setup_input_device(cd);
if (rc)
goto error_init_input;
return 0;
error_init_input:
input_free_device(md->input);
error_alloc_failed:
dev_err(dev, "%s failed.\n", __func__);
return rc;
}
struct cyttsp4 *cyttsp4_probe(const struct cyttsp4_bus_ops *ops,
struct device *dev, u16 irq, size_t xfer_buf_size)
{
struct cyttsp4 *cd;
struct cyttsp4_platform_data *pdata = dev_get_platdata(dev);
unsigned long irq_flags;
int rc = 0;
if (!pdata || !pdata->core_pdata || !pdata->mt_pdata) {
dev_err(dev, "%s: Missing platform data\n", __func__);
rc = -ENODEV;
goto error_no_pdata;
}
cd = kzalloc(sizeof(*cd), GFP_KERNEL);
if (!cd) {
dev_err(dev, "%s: Error, kzalloc\n", __func__);
rc = -ENOMEM;
goto error_alloc_data;
}
cd->xfer_buf = kzalloc(xfer_buf_size, GFP_KERNEL);
if (!cd->xfer_buf) {
dev_err(dev, "%s: Error, kzalloc\n", __func__);
rc = -ENOMEM;
goto error_free_cd;
}
/* Initialize device info */
cd->dev = dev;
cd->pdata = pdata;
cd->cpdata = pdata->core_pdata;
cd->bus_ops = ops;
/* Initialize mutexes and spinlocks */
mutex_init(&cd->system_lock);
mutex_init(&cd->adap_lock);
/* Initialize wait queue */
init_waitqueue_head(&cd->wait_q);
/* Initialize works */
INIT_WORK(&cd->startup_work, cyttsp4_startup_work_function);
INIT_WORK(&cd->watchdog_work, cyttsp4_watchdog_work);
/* Initialize IRQ */
cd->irq = gpio_to_irq(cd->cpdata->irq_gpio);
if (cd->irq < 0) {
rc = -EINVAL;
goto error_free_xfer;
}
dev_set_drvdata(dev, cd);
/* Call platform init function */
if (cd->cpdata->init) {
dev_dbg(cd->dev, "%s: Init HW\n", __func__);
rc = cd->cpdata->init(cd->cpdata, 1, cd->dev);
} else {
dev_dbg(cd->dev, "%s: No HW INIT function\n", __func__);
rc = 0;
}
if (rc < 0)
dev_err(cd->dev, "%s: HW Init fail r=%d\n", __func__, rc);
dev_dbg(dev, "%s: initialize threaded irq=%d\n", __func__, cd->irq);
if (cd->cpdata->level_irq_udelay > 0)
/* use level triggered interrupts */
irq_flags = IRQF_TRIGGER_LOW | IRQF_ONESHOT;
else
/* use edge triggered interrupts */
irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
rc = request_threaded_irq(cd->irq, NULL, cyttsp4_irq, irq_flags,
dev_name(dev), cd);
if (rc < 0) {
dev_err(dev, "%s: Error, could not request irq\n", __func__);
goto error_request_irq;
}
/* Setup watchdog timer */
timer_setup(&cd->watchdog_timer, cyttsp4_watchdog_timer, 0);
/*
* call startup directly to ensure that the device
* is tested before leaving the probe
*/
rc = cyttsp4_startup(cd);
/* Do not fail probe if startup fails but the device is detected */
if (rc < 0 && cd->mode == CY_MODE_UNKNOWN) {
dev_err(cd->dev, "%s: Fail initial startup r=%d\n",
__func__, rc);
goto error_startup;
}
rc = cyttsp4_mt_probe(cd);
if (rc < 0) {
dev_err(dev, "%s: Error, fail mt probe\n", __func__);
goto error_startup;
}
pm_runtime_enable(dev);
return cd;
error_startup:
cancel_work_sync(&cd->startup_work);
cyttsp4_stop_wd_timer(cd);
pm_runtime_disable(dev);
cyttsp4_free_si_ptrs(cd);
free_irq(cd->irq, cd);
error_request_irq:
if (cd->cpdata->init)
cd->cpdata->init(cd->cpdata, 0, dev);
error_free_xfer:
kfree(cd->xfer_buf);
error_free_cd:
kfree(cd);
error_alloc_data:
error_no_pdata:
dev_err(dev, "%s failed.\n", __func__);
return ERR_PTR(rc);
}
EXPORT_SYMBOL_GPL(cyttsp4_probe);
static void cyttsp4_mt_release(struct cyttsp4_mt_data *md)
{
input_unregister_device(md->input);
input_set_drvdata(md->input, NULL);
}
int cyttsp4_remove(struct cyttsp4 *cd)
{
struct device *dev = cd->dev;
cyttsp4_mt_release(&cd->md);
/*
* Suspend the device before freeing the startup_work and stopping
* the watchdog since sleep function restarts watchdog on failure
*/
pm_runtime_suspend(dev);
pm_runtime_disable(dev);
cancel_work_sync(&cd->startup_work);
cyttsp4_stop_wd_timer(cd);
free_irq(cd->irq, cd);
if (cd->cpdata->init)
cd->cpdata->init(cd->cpdata, 0, dev);
cyttsp4_free_si_ptrs(cd);
kfree(cd);
return 0;
}
EXPORT_SYMBOL_GPL(cyttsp4_remove);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard touchscreen core driver");
MODULE_AUTHOR("Cypress");
drivers/input/touchscreen/cyttsp4_core.h deleted 100644 → 0
View file @ ae25dbac
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* cyttsp4_core.h
* Cypress TrueTouch(TM) Standard Product V4 Core driver module.
* For use with Cypress Txx4xx parts.
* Supported parts include:
* TMA4XX
* TMA1036
*
* Copyright (C) 2012 Cypress Semiconductor
*
* Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
*/
#ifndef _LINUX_CYTTSP4_CORE_H
#define _LINUX_CYTTSP4_CORE_H
#include <linux/device.h>
#include <linux/err.h>
#include <linux/input.h>
#include <linux/kernel.h>
#include <linux/limits.h>
#include <linux/module.h>
#include <linux/stringify.h>
#include <linux/types.h>
#include <linux/platform_data/cyttsp4.h>
#define CY_REG_BASE 0x00
#define CY_POST_CODEL_WDG_RST 0x01
#define CY_POST_CODEL_CFG_DATA_CRC_FAIL 0x02
#define CY_POST_CODEL_PANEL_TEST_FAIL 0x04
#define CY_NUM_BTN_PER_REG 4
/* touch record system information offset masks and shifts */
#define CY_BYTE_OFS_MASK 0x1F
#define CY_BOFS_MASK 0xE0
#define CY_BOFS_SHIFT 5
#define CY_TMA1036_TCH_REC_SIZE 6
#define CY_TMA4XX_TCH_REC_SIZE 9
#define CY_TMA1036_MAX_TCH 0x0E
#define CY_TMA4XX_MAX_TCH 0x1E
#define CY_NORMAL_ORIGIN 0 /* upper, left corner */
#define CY_INVERT_ORIGIN 1 /* lower, right corner */
/* helpers */
#define GET_NUM_TOUCHES(x) ((x) & 0x1F)
#define IS_LARGE_AREA(x) ((x) & 0x20)
#define IS_BAD_PKT(x) ((x) & 0x20)
#define IS_BOOTLOADER(hst_mode, reset_detect) \
((hst_mode) & 0x01 || (reset_detect) != 0)
#define IS_TMO(t) ((t) == 0)
enum cyttsp_cmd_bits {
CY_CMD_COMPLETE = (1 << 6),
};
/* Timeout in ms. */
#define CY_WATCHDOG_TIMEOUT 1000
#define CY_MAX_PRINT_SIZE 512
#ifdef VERBOSE_DEBUG
#define CY_MAX_PRBUF_SIZE PIPE_BUF
#define CY_PR_TRUNCATED " truncated..."
#endif
enum cyttsp4_ic_grpnum {
CY_IC_GRPNUM_RESERVED,
CY_IC_GRPNUM_CMD_REGS,
CY_IC_GRPNUM_TCH_REP,
CY_IC_GRPNUM_DATA_REC,
CY_IC_GRPNUM_TEST_REC,
CY_IC_GRPNUM_PCFG_REC,
CY_IC_GRPNUM_TCH_PARM_VAL,
CY_IC_GRPNUM_TCH_PARM_SIZE,
CY_IC_GRPNUM_RESERVED1,
CY_IC_GRPNUM_RESERVED2,
CY_IC_GRPNUM_OPCFG_REC,
CY_IC_GRPNUM_DDATA_REC,
CY_IC_GRPNUM_MDATA_REC,
CY_IC_GRPNUM_TEST_REGS,
CY_IC_GRPNUM_BTN_KEYS,
CY_IC_GRPNUM_TTHE_REGS,
CY_IC_GRPNUM_NUM
};
enum cyttsp4_int_state {
CY_INT_NONE,
CY_INT_IGNORE = (1 << 0),
CY_INT_MODE_CHANGE = (1 << 1),
CY_INT_EXEC_CMD = (1 << 2),
CY_INT_AWAKE = (1 << 3),
};
enum cyttsp4_mode {
CY_MODE_UNKNOWN,
CY_MODE_BOOTLOADER = (1 << 1),
CY_MODE_OPERATIONAL = (1 << 2),
CY_MODE_SYSINFO = (1 << 3),
CY_MODE_CAT = (1 << 4),
CY_MODE_STARTUP = (1 << 5),
CY_MODE_LOADER = (1 << 6),
CY_MODE_CHANGE_MODE = (1 << 7),
CY_MODE_CHANGED = (1 << 8),
CY_MODE_CMD_COMPLETE = (1 << 9),
};
enum cyttsp4_sleep_state {
SS_SLEEP_OFF,
SS_SLEEP_ON,
SS_SLEEPING,
SS_WAKING,
};
enum cyttsp4_startup_state {
STARTUP_NONE,
STARTUP_QUEUED,
STARTUP_RUNNING,
};
#define CY_NUM_REVCTRL 8
struct cyttsp4_cydata {
u8 ttpidh;
u8 ttpidl;
u8 fw_ver_major;
u8 fw_ver_minor;
u8 revctrl[CY_NUM_REVCTRL];
u8 blver_major;
u8 blver_minor;
u8 jtag_si_id3;
u8 jtag_si_id2;
u8 jtag_si_id1;
u8 jtag_si_id0;
u8 mfgid_sz;
u8 cyito_idh;
u8 cyito_idl;
u8 cyito_verh;
u8 cyito_verl;
u8 ttsp_ver_major;
u8 ttsp_ver_minor;
u8 device_info;
u8 mfg_id[];
} __packed;
struct cyttsp4_test {
u8 post_codeh;
u8 post_codel;
} __packed;
struct cyttsp4_pcfg {
u8 electrodes_x;
u8 electrodes_y;
u8 len_xh;
u8 len_xl;
u8 len_yh;
u8 len_yl;
u8 res_xh;
u8 res_xl;
u8 res_yh;
u8 res_yl;
u8 max_zh;
u8 max_zl;
u8 panel_info0;
} __packed;
struct cyttsp4_tch_rec_params {
u8 loc;
u8 size;
} __packed;
#define CY_NUM_TCH_FIELDS 7
#define CY_NUM_EXT_TCH_FIELDS 3
struct cyttsp4_opcfg {
u8 cmd_ofs;
u8 rep_ofs;
u8 rep_szh;
u8 rep_szl;
u8 num_btns;
u8 tt_stat_ofs;
u8 obj_cfg0;
u8 max_tchs;
u8 tch_rec_size;
struct cyttsp4_tch_rec_params tch_rec_old[CY_NUM_TCH_FIELDS];
u8 btn_rec_size; /* btn record size (in bytes) */
u8 btn_diff_ofs; /* btn data loc, diff counts */
u8 btn_diff_size; /* btn size of diff counts (in bits) */
struct cyttsp4_tch_rec_params tch_rec_new[CY_NUM_EXT_TCH_FIELDS];
} __packed;
struct cyttsp4_sysinfo_ptr {
struct cyttsp4_cydata *cydata;
struct cyttsp4_test *test;
struct cyttsp4_pcfg *pcfg;
struct cyttsp4_opcfg *opcfg;
struct cyttsp4_ddata *ddata;
struct cyttsp4_mdata *mdata;
} __packed;
struct cyttsp4_sysinfo_data {
u8 hst_mode;
u8 reserved;
u8 map_szh;
u8 map_szl;
u8 cydata_ofsh;
u8 cydata_ofsl;
u8 test_ofsh;
u8 test_ofsl;
u8 pcfg_ofsh;
u8 pcfg_ofsl;
u8 opcfg_ofsh;
u8 opcfg_ofsl;
u8 ddata_ofsh;
u8 ddata_ofsl;
u8 mdata_ofsh;
u8 mdata_ofsl;
} __packed;
enum cyttsp4_tch_abs { /* for ordering within the extracted touch data array */
CY_TCH_X, /* X */
CY_TCH_Y, /* Y */
CY_TCH_P, /* P (Z) */
CY_TCH_T, /* TOUCH ID */
CY_TCH_E, /* EVENT ID */
CY_TCH_O, /* OBJECT ID */
CY_TCH_W, /* SIZE */
CY_TCH_MAJ, /* TOUCH_MAJOR */
CY_TCH_MIN, /* TOUCH_MINOR */
CY_TCH_OR, /* ORIENTATION */
CY_TCH_NUM_ABS
};
struct cyttsp4_touch {
int abs[CY_TCH_NUM_ABS];
};
struct cyttsp4_tch_abs_params {
size_t ofs; /* abs byte offset */
size_t size; /* size in bits */
size_t max; /* max value */
size_t bofs; /* bit offset */
};
struct cyttsp4_sysinfo_ofs {
size_t chip_type;
size_t cmd_ofs;
size_t rep_ofs;
size_t rep_sz;
size_t num_btns;
size_t num_btn_regs; /* ceil(num_btns/4) */
size_t tt_stat_ofs;
size_t tch_rec_size;
size_t obj_cfg0;
size_t max_tchs;
size_t mode_size;
size_t data_size;
size_t map_sz;
size_t max_x;
size_t x_origin; /* left or right corner */
size_t max_y;
size_t y_origin; /* upper or lower corner */
size_t max_p;
size_t cydata_ofs;
size_t test_ofs;
size_t pcfg_ofs;
size_t opcfg_ofs;
size_t ddata_ofs;
size_t mdata_ofs;
size_t cydata_size;
size_t test_size;
size_t pcfg_size;
size_t opcfg_size;
size_t ddata_size;
size_t mdata_size;
size_t btn_keys_size;
struct cyttsp4_tch_abs_params tch_abs[CY_TCH_NUM_ABS];
size_t btn_rec_size; /* btn record size (in bytes) */
size_t btn_diff_ofs;/* btn data loc ,diff counts, (Op-Mode byte ofs) */
size_t btn_diff_size;/* btn size of diff counts (in bits) */
};
enum cyttsp4_btn_state {
CY_BTN_RELEASED,
CY_BTN_PRESSED,
CY_BTN_NUM_STATE
};
struct cyttsp4_btn {
bool enabled;
int state; /* CY_BTN_PRESSED, CY_BTN_RELEASED */
int key_code;
};
struct cyttsp4_sysinfo {
bool ready;
struct cyttsp4_sysinfo_data si_data;
struct cyttsp4_sysinfo_ptr si_ptrs;
struct cyttsp4_sysinfo_ofs si_ofs;
struct cyttsp4_btn *btn; /* button states */
u8 *btn_rec_data; /* button diff count data */
u8 *xy_mode; /* operational mode and status regs */
u8 *xy_data; /* operational touch regs */
};
struct cyttsp4_mt_data {
struct cyttsp4_mt_platform_data *pdata;
struct cyttsp4_sysinfo *si;
struct input_dev *input;
struct mutex report_lock;
bool is_suspended;
char phys[NAME_MAX];
int num_prv_tch;
};
struct cyttsp4 {
struct device *dev;
struct mutex system_lock;
struct mutex adap_lock;
enum cyttsp4_mode mode;
enum cyttsp4_sleep_state sleep_state;
enum cyttsp4_startup_state startup_state;
int int_status;
wait_queue_head_t wait_q;
int irq;
struct work_struct startup_work;
struct work_struct watchdog_work;
struct timer_list watchdog_timer;
struct cyttsp4_sysinfo sysinfo;
void *exclusive_dev;
int exclusive_waits;
atomic_t ignore_irq;
bool invalid_touch_app;
struct cyttsp4_mt_data md;
struct cyttsp4_platform_data *pdata;
struct cyttsp4_core_platform_data *cpdata;
const struct cyttsp4_bus_ops *bus_ops;
u8 *xfer_buf;
#ifdef VERBOSE_DEBUG
u8 pr_buf[CY_MAX_PRBUF_SIZE];
#endif
};
struct cyttsp4_bus_ops {
u16 bustype;
int (*write)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length,
const void *values);
int (*read)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length,
void *values);
};
enum cyttsp4_hst_mode_bits {
CY_HST_TOGGLE = (1 << 7),
CY_HST_MODE_CHANGE = (1 << 3),
CY_HST_MODE = (7 << 4),
CY_HST_OPERATE = (0 << 4),
CY_HST_SYSINFO = (1 << 4),
CY_HST_CAT = (2 << 4),
CY_HST_LOWPOW = (1 << 2),
CY_HST_SLEEP = (1 << 1),
CY_HST_RESET = (1 << 0),
};
/* abs settings */
#define CY_IGNORE_VALUE 0xFFFF
/* abs signal capabilities offsets in the frameworks array */
enum cyttsp4_sig_caps {
CY_SIGNAL_OST,
CY_MIN_OST,
CY_MAX_OST,
CY_FUZZ_OST,
CY_FLAT_OST,
CY_NUM_ABS_SET /* number of signal capability fields */
};
/* abs axis signal offsets in the framworks array */
enum cyttsp4_sig_ost {
CY_ABS_X_OST,
CY_ABS_Y_OST,
CY_ABS_P_OST,
CY_ABS_W_OST,
CY_ABS_ID_OST,
CY_ABS_MAJ_OST,
CY_ABS_MIN_OST,
CY_ABS_OR_OST,
CY_NUM_ABS_OST /* number of abs signals */
};
enum cyttsp4_flags {
CY_FLAG_NONE = 0x00,
CY_FLAG_HOVER = 0x04,
CY_FLAG_FLIP = 0x08,
CY_FLAG_INV_X = 0x10,
CY_FLAG_INV_Y = 0x20,
CY_FLAG_VKEYS = 0x40,
};
enum cyttsp4_object_id {
CY_OBJ_STANDARD_FINGER,
CY_OBJ_LARGE_OBJECT,
CY_OBJ_STYLUS,
CY_OBJ_HOVER,
};
enum cyttsp4_event_id {
CY_EV_NO_EVENT,
CY_EV_TOUCHDOWN,
CY_EV_MOVE, /* significant displacement (> act dist) */
CY_EV_LIFTOFF, /* record reports last position */
};
/* x-axis resolution of panel in pixels */
#define CY_PCFG_RESOLUTION_X_MASK 0x7F
/* y-axis resolution of panel in pixels */
#define CY_PCFG_RESOLUTION_Y_MASK 0x7F
/* x-axis, 0:origin is on left side of panel, 1: right */
#define CY_PCFG_ORIGIN_X_MASK 0x80
/* y-axis, 0:origin is on top side of panel, 1: bottom */
#define CY_PCFG_ORIGIN_Y_MASK 0x80
static inline int cyttsp4_adap_read(struct cyttsp4 *ts, u16 addr, int size,
void *buf)
{
return ts->bus_ops->read(ts->dev, ts->xfer_buf, addr, size, buf);
}
static inline int cyttsp4_adap_write(struct cyttsp4 *ts, u16 addr, int size,
const void *buf)
{
return ts->bus_ops->write(ts->dev, ts->xfer_buf, addr, size, buf);
}
extern struct cyttsp4 *cyttsp4_probe(const struct cyttsp4_bus_ops *ops,
struct device *dev, u16 irq, size_t xfer_buf_size);
extern int cyttsp4_remove(struct cyttsp4 *ts);
int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
u8 length, const void *values);
int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
u8 length, void *values);
extern const struct dev_pm_ops cyttsp4_pm_ops;
#endif /* _LINUX_CYTTSP4_CORE_H */
drivers/input/touchscreen/cyttsp4_i2c.c deleted 100644 → 0
View file @ ae25dbac
// SPDX-License-Identifier: GPL-2.0-only
/*
* cyttsp_i2c.c
* Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
* For use with Cypress Txx4xx parts.
* Supported parts include:
* TMA4XX
* TMA1036
*
* Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
* Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
* Copyright (C) 2013 Cypress Semiconductor
*
* Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
*/
#include "cyttsp4_core.h"
#include <linux/i2c.h>
#include <linux/input.h>
#define CYTTSP4_I2C_DATA_SIZE (3 * 256)
static const struct cyttsp4_bus_ops cyttsp4_i2c_bus_ops = {
.bustype = BUS_I2C,
.write = cyttsp_i2c_write_block_data,
.read = cyttsp_i2c_read_block_data,
};
static int cyttsp4_i2c_probe(struct i2c_client *client)
{
struct cyttsp4 *ts;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
dev_err(&client->dev, "I2C functionality not Supported\n");
return -EIO;
}
ts = cyttsp4_probe(&cyttsp4_i2c_bus_ops, &client->dev, client->irq,
CYTTSP4_I2C_DATA_SIZE);
return PTR_ERR_OR_ZERO(ts);
}
static void cyttsp4_i2c_remove(struct i2c_client *client)
{
struct cyttsp4 *ts = i2c_get_clientdata(client);
cyttsp4_remove(ts);
}
static const struct i2c_device_id cyttsp4_i2c_id[] = {
{ CYTTSP4_I2C_NAME },
{ }
};
MODULE_DEVICE_TABLE(i2c, cyttsp4_i2c_id);
static struct i2c_driver cyttsp4_i2c_driver = {
.driver = {
.name = CYTTSP4_I2C_NAME,
.pm = pm_ptr(&cyttsp4_pm_ops),
},
.probe = cyttsp4_i2c_probe,
.remove = cyttsp4_i2c_remove,
.id_table = cyttsp4_i2c_id,
};
module_i2c_driver(cyttsp4_i2c_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
MODULE_AUTHOR("Cypress");
drivers/input/touchscreen/cyttsp4_spi.c deleted 100644 → 0
View file @ ae25dbac
// SPDX-License-Identifier: GPL-2.0-only
/*
* Source for:
* Cypress TrueTouch(TM) Standard Product (TTSP) SPI touchscreen driver.
* For use with Cypress Txx4xx parts.
* Supported parts include:
* TMA4XX
* TMA1036
*
* Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
* Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
* Copyright (C) 2013 Cypress Semiconductor
*
* Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
*/
#include "cyttsp4_core.h"
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/spi/spi.h>
#define CY_SPI_WR_OP 0x00 /* r/~w */
#define CY_SPI_RD_OP 0x01
#define CY_SPI_BITS_PER_WORD 8
#define CY_SPI_A8_BIT 0x02
#define CY_SPI_WR_HEADER_BYTES 2
#define CY_SPI_RD_HEADER_BYTES 1
#define CY_SPI_CMD_BYTES 2
#define CY_SPI_SYNC_BYTE 0
#define CY_SPI_SYNC_ACK 0x62 /* from TRM *A protocol */
#define CY_SPI_DATA_SIZE (2 * 256)
#define CY_SPI_DATA_BUF_SIZE (CY_SPI_CMD_BYTES + CY_SPI_DATA_SIZE)
static int cyttsp_spi_xfer(struct device *dev, u8 *xfer_buf,
u8 op, u16 reg, u8 *buf, int length)
{
struct spi_device *spi = to_spi_device(dev);
struct spi_message msg;
struct spi_transfer xfer[2];
u8 *wr_buf = &xfer_buf[0];
u8 rd_buf[CY_SPI_CMD_BYTES];
int retval;
int i;
if (length > CY_SPI_DATA_SIZE) {
dev_err(dev, "%s: length %d is too big.\n",
__func__, length);
return -EINVAL;
}
memset(wr_buf, 0, CY_SPI_DATA_BUF_SIZE);
memset(rd_buf, 0, CY_SPI_CMD_BYTES);
wr_buf[0] = op + (((reg >> 8) & 0x1) ? CY_SPI_A8_BIT : 0);
if (op == CY_SPI_WR_OP) {
wr_buf[1] = reg & 0xFF;
if (length > 0)
memcpy(wr_buf + CY_SPI_CMD_BYTES, buf, length);
}
memset(xfer, 0, sizeof(xfer));
spi_message_init(&msg);
/*
We set both TX and RX buffers because Cypress TTSP
requires full duplex operation.
*/
xfer[0].tx_buf = wr_buf;
xfer[0].rx_buf = rd_buf;
switch (op) {
case CY_SPI_WR_OP:
xfer[0].len = length + CY_SPI_CMD_BYTES;
spi_message_add_tail(&xfer[0], &msg);
break;
case CY_SPI_RD_OP:
xfer[0].len = CY_SPI_RD_HEADER_BYTES;
spi_message_add_tail(&xfer[0], &msg);
xfer[1].rx_buf = buf;
xfer[1].len = length;
spi_message_add_tail(&xfer[1], &msg);
break;
default:
dev_err(dev, "%s: bad operation code=%d\n", __func__, op);
return -EINVAL;
}
retval = spi_sync(spi, &msg);
if (retval < 0) {
dev_dbg(dev, "%s: spi_sync() error %d, len=%d, op=%d\n",
__func__, retval, xfer[1].len, op);
/*
* do not return here since was a bad ACK sequence
* let the following ACK check handle any errors and
* allow silent retries
*/
}
if (rd_buf[CY_SPI_SYNC_BYTE] != CY_SPI_SYNC_ACK) {
dev_dbg(dev, "%s: operation %d failed\n", __func__, op);
for (i = 0; i < CY_SPI_CMD_BYTES; i++)
dev_dbg(dev, "%s: test rd_buf[%d]:0x%02x\n",
__func__, i, rd_buf[i]);
for (i = 0; i < length; i++)
dev_dbg(dev, "%s: test buf[%d]:0x%02x\n",
__func__, i, buf[i]);
return -EIO;
}
return 0;
}
static int cyttsp_spi_read_block_data(struct device *dev, u8 *xfer_buf,
u16 addr, u8 length, void *data)
{
int rc;
rc = cyttsp_spi_xfer(dev, xfer_buf, CY_SPI_WR_OP, addr, NULL, 0);
if (rc)
return rc;
else
return cyttsp_spi_xfer(dev, xfer_buf, CY_SPI_RD_OP, addr, data,
length);
}
static int cyttsp_spi_write_block_data(struct device *dev, u8 *xfer_buf,
u16 addr, u8 length, const void *data)
{
return cyttsp_spi_xfer(dev, xfer_buf, CY_SPI_WR_OP, addr, (void *)data,
length);
}
static const struct cyttsp4_bus_ops cyttsp_spi_bus_ops = {
.bustype = BUS_SPI,
.write = cyttsp_spi_write_block_data,
.read = cyttsp_spi_read_block_data,
};
static int cyttsp4_spi_probe(struct spi_device *spi)
{
struct cyttsp4 *ts;
int error;
/* Set up SPI*/
spi->bits_per_word = CY_SPI_BITS_PER_WORD;
spi->mode = SPI_MODE_0;
error = spi_setup(spi);
if (error < 0) {
dev_err(&spi->dev, "%s: SPI setup error %d\n",
__func__, error);
return error;
}
ts = cyttsp4_probe(&cyttsp_spi_bus_ops, &spi->dev, spi->irq,
CY_SPI_DATA_BUF_SIZE);
return PTR_ERR_OR_ZERO(ts);
}
static void cyttsp4_spi_remove(struct spi_device *spi)
{
struct cyttsp4 *ts = spi_get_drvdata(spi);
cyttsp4_remove(ts);
}
static struct spi_driver cyttsp4_spi_driver = {
.driver = {
.name = CYTTSP4_SPI_NAME,
.pm = pm_ptr(&cyttsp4_pm_ops),
},
.probe = cyttsp4_spi_probe,
.remove = cyttsp4_spi_remove,
};
module_spi_driver(cyttsp4_spi_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) SPI driver");
MODULE_AUTHOR("Cypress");
MODULE_ALIAS("spi:cyttsp4");
drivers/input/touchscreen/cyttsp_core.h
View file @ 25162a4f
......@@ -136,10 +136,6 @@ struct cyttsp {
struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
struct device *dev, int irq, size_t xfer_buf_size);
int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
u8 length, const void *values);
int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
u8 length, void *values);
extern const struct dev_pm_ops cyttsp_pm_ops;
#endif /* __CYTTSP_CORE_H__ */
drivers/input/touchscreen/cyttsp_i2c.c
View file @ 25162a4f
......@@ -22,6 +22,61 @@
#define CY_I2C_DATA_SIZE 128
static int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf,
u16 addr, u8 length, void *values)
{
struct i2c_client *client = to_i2c_client(dev);
u8 client_addr = client->addr | ((addr >> 8) & 0x1);
u8 addr_lo = addr & 0xFF;
struct i2c_msg msgs[] = {
{
.addr = client_addr,
.flags = 0,
.len = 1,
.buf = &addr_lo,
},
{
.addr = client_addr,
.flags = I2C_M_RD,
.len = length,
.buf = values,
},
};
int retval;
retval = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (retval < 0)
return retval;
return retval != ARRAY_SIZE(msgs) ? -EIO : 0;
}
static int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf,
u16 addr, u8 length, const void *values)
{
struct i2c_client *client = to_i2c_client(dev);
u8 client_addr = client->addr | ((addr >> 8) & 0x1);
u8 addr_lo = addr & 0xFF;
struct i2c_msg msgs[] = {
{
.addr = client_addr,
.flags = 0,
.len = length + 1,
.buf = xfer_buf,
},
};
int retval;
xfer_buf[0] = addr_lo;
memcpy(&xfer_buf[1], values, length);
retval = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (retval < 0)
return retval;
return retval != ARRAY_SIZE(msgs) ? -EIO : 0;
}
static const struct cyttsp_bus_ops cyttsp_i2c_bus_ops = {
.bustype = BUS_I2C,
.write = cyttsp_i2c_write_block_data,
......
drivers/input/touchscreen/cyttsp_i2c_common.c deleted 100644 → 0
View file @ ae25dbac
// SPDX-License-Identifier: GPL-2.0-only
/*
* cyttsp_i2c_common.c
* Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
* For use with Cypress Txx3xx and Txx4xx parts.
* Supported parts include:
* CY8CTST341
* CY8CTMA340
* TMA4XX
* TMA1036
*
* Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
* Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
*
* Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
*/
#include <linux/device.h>
#include <linux/export.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/types.h>
#include "cyttsp4_core.h"
int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf,
u16 addr, u8 length, void *values)
{
struct i2c_client *client = to_i2c_client(dev);
u8 client_addr = client->addr | ((addr >> 8) & 0x1);
u8 addr_lo = addr & 0xFF;
struct i2c_msg msgs[] = {
{
.addr = client_addr,
.flags = 0,
.len = 1,
.buf = &addr_lo,
},
{
.addr = client_addr,
.flags = I2C_M_RD,
.len = length,
.buf = values,
},
};
int retval;
retval = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (retval < 0)
return retval;
return retval != ARRAY_SIZE(msgs) ? -EIO : 0;
}
EXPORT_SYMBOL_GPL(cyttsp_i2c_read_block_data);
int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf,
u16 addr, u8 length, const void *values)
{
struct i2c_client *client = to_i2c_client(dev);
u8 client_addr = client->addr | ((addr >> 8) & 0x1);
u8 addr_lo = addr & 0xFF;
struct i2c_msg msgs[] = {
{
.addr = client_addr,
.flags = 0,
.len = length + 1,
.buf = xfer_buf,
},
};
int retval;
xfer_buf[0] = addr_lo;
memcpy(&xfer_buf[1], values, length);
retval = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (retval < 0)
return retval;
return retval != ARRAY_SIZE(msgs) ? -EIO : 0;
}
EXPORT_SYMBOL_GPL(cyttsp_i2c_write_block_data);
MODULE_DESCRIPTION("Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Cypress");
include/linux/platform_data/cyttsp4.h deleted 100644 → 0
View file @ ae25dbac
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Header file for:
* Cypress TrueTouch(TM) Standard Product (TTSP) touchscreen drivers.
* For use with Cypress Txx3xx parts.
* Supported parts include:
* CY8CTST341
* CY8CTMA340
*
* Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
* Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
*
* Contact Cypress Semiconductor at www.cypress.com (kev@cypress.com)
*/
#ifndef _CYTTSP4_H_
#define _CYTTSP4_H_
#define CYTTSP4_MT_NAME "cyttsp4_mt"
#define CYTTSP4_I2C_NAME "cyttsp4_i2c_adapter"
#define CYTTSP4_SPI_NAME "cyttsp4_spi_adapter"
#define CY_TOUCH_SETTINGS_MAX 32
struct touch_framework {
const uint16_t *abs;
uint8_t size;
uint8_t enable_vkeys;
} __packed;
struct cyttsp4_mt_platform_data {
struct touch_framework *frmwrk;
unsigned short flags;
char const *inp_dev_name;
};
struct touch_settings {
const uint8_t *data;
uint32_t size;
uint8_t tag;
} __packed;
struct cyttsp4_core_platform_data {
int irq_gpio;
int rst_gpio;
int level_irq_udelay;
int (*xres)(struct cyttsp4_core_platform_data *pdata,
struct device *dev);
int (*init)(struct cyttsp4_core_platform_data *pdata,
int on, struct device *dev);
int (*power)(struct cyttsp4_core_platform_data *pdata,
int on, struct device *dev, atomic_t *ignore_irq);
int (*irq_stat)(struct cyttsp4_core_platform_data *pdata,
struct device *dev);
struct touch_settings *sett[CY_TOUCH_SETTINGS_MAX];
};
struct cyttsp4_platform_data {
struct cyttsp4_core_platform_data *core_pdata;
struct cyttsp4_mt_platform_data *mt_pdata;
};
#endif /* _CYTTSP4_H_ */
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