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kernel_samsung_a34x-permissive/drivers/input/touchscreen/nt36525b_i2c/nt36xxx.c
Fede2782 6db4831e98
Import A346BXXU4BWK2 kernel source 
Android 14
2024-04-28 15:51:13 +02:00

2223 lines
57 KiB
C
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/*
* Copyright (C) 2010 - 2021 Novatek, Inc.
*
* $Revision: 91657 $
* $Date: 2021-12-01 16:30:31 +0800 (週三, 01 十二月 2021) $
*
* 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.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/proc_fs.h>
#include <linux/input/mt.h>
#include <linux/of_gpio.h>
#include <linux/of_irq.h>
#include <linux/version.h>
#if defined(CONFIG_FB)
#if defined(CONFIG_DRM_PANEL)
#include <drm/drm_panel.h>
#elif defined(CONFIG_DRM_MSM)
#include <linux/msm_drm_notify.h>
#endif
#include <linux/notifier.h>
#include <linux/fb.h>
#elif defined(CONFIG_HAS_EARLYSUSPEND)
#include <linux/earlysuspend.h>
#endif
#include "nt36xxx.h"
#if NVT_TOUCH_ESD_PROTECT
#include <linux/jiffies.h>
#endif /* #if NVT_TOUCH_ESD_PROTECT */
#if NVT_TOUCH_ESD_PROTECT
static struct delayed_work nvt_esd_check_work;
static struct workqueue_struct *nvt_esd_check_wq;
static unsigned long irq_timer = 0;
uint8_t esd_check = false;
uint8_t esd_retry = 0;
#endif /* #if NVT_TOUCH_ESD_PROTECT */
#if NVT_TOUCH_EXT_PROC
extern int32_t nvt_extra_proc_init(void);
extern void nvt_extra_proc_deinit(void);
#endif
#if NVT_TOUCH_MP
extern int32_t nvt_mp_proc_init(void);
extern void nvt_mp_proc_deinit(void);
#endif
struct nvt_ts_data *ts;
#if BOOT_UPDATE_FIRMWARE
static struct workqueue_struct *nvt_fwu_wq;
extern void Boot_Update_Firmware(struct work_struct *work);
#endif
#if defined(CONFIG_FB)
#if defined(CONFIG_DRM_PANEL)
static struct drm_panel *active_panel;
static int nvt_drm_panel_notifier_callback(struct notifier_block *self, unsigned long event, void *data);
#elif defined(_MSM_DRM_NOTIFY_H_)
static int nvt_drm_notifier_callback(struct notifier_block *self, unsigned long event, void *data);
#else
static int nvt_fb_notifier_callback(struct notifier_block *self, unsigned long event, void *data);
#endif
#elif defined(CONFIG_HAS_EARLYSUSPEND)
static void nvt_ts_early_suspend(struct early_suspend *h);
static void nvt_ts_late_resume(struct early_suspend *h);
#endif
#if TOUCH_KEY_NUM > 0
const uint16_t touch_key_array[TOUCH_KEY_NUM] = {
KEY_BACK,
KEY_HOME,
KEY_MENU
};
#endif
#if WAKEUP_GESTURE
const uint16_t gesture_key_array[] = {
KEY_POWER, //GESTURE_WORD_C
KEY_POWER, //GESTURE_WORD_W
KEY_POWER, //GESTURE_WORD_V
KEY_POWER, //GESTURE_DOUBLE_CLICK
KEY_POWER, //GESTURE_WORD_Z
KEY_POWER, //GESTURE_WORD_M
KEY_POWER, //GESTURE_WORD_O
KEY_POWER, //GESTURE_WORD_e
KEY_POWER, //GESTURE_WORD_S
KEY_POWER, //GESTURE_SLIDE_UP
KEY_POWER, //GESTURE_SLIDE_DOWN
KEY_POWER, //GESTURE_SLIDE_LEFT
KEY_POWER, //GESTURE_SLIDE_RIGHT
};
#endif
static uint8_t bTouchIsAwake = 0;
/*******************************************************
Description:
Novatek touchscreen irq enable/disable function.
return:
n.a.
*******************************************************/
static void nvt_irq_enable(bool enable)
{
struct irq_desc *desc;
if (enable) {
if (!ts->irq_enabled) {
enable_irq(ts->client->irq);
ts->irq_enabled = true;
}
} else {
if (ts->irq_enabled) {
disable_irq(ts->client->irq);
ts->irq_enabled = false;
}
}
desc = irq_to_desc(ts->client->irq);
NVT_LOG("enable=%d, desc->depth=%d\n", enable, desc->depth);
}
/*******************************************************
Description:
Novatek touchscreen i2c read function.
return:
Executive outcomes. 2---succeed. -5---I/O error
*******************************************************/
int32_t CTP_I2C_READ(struct i2c_client *client, uint16_t address, uint8_t *buf, uint16_t len)
{
struct i2c_msg msgs[2];
int32_t ret = -1;
int32_t retries = 0;
mutex_lock(&ts->xbuf_lock);
msgs[0].flags = !I2C_M_RD;
msgs[0].addr = address;
msgs[0].len = 1;
msgs[0].buf = &buf[0];
msgs[1].flags = I2C_M_RD;
msgs[1].addr = address;
msgs[1].len = len - 1;
msgs[1].buf = ts->xbuf;
while (retries < 5) {
ret = i2c_transfer(client->adapter, msgs, 2);
if (ret == 2) break;
retries++;
}
if (unlikely(retries == 5)) {
NVT_ERR("error, ret=%d\n", ret);
ret = -EIO;
} else {
memcpy(buf + 1, ts->xbuf, len - 1);
}
mutex_unlock(&ts->xbuf_lock);
return ret;
}
/*******************************************************
Description:
Novatek touchscreen i2c write function.
return:
Executive outcomes. 1---succeed. -5---I/O error
*******************************************************/
int32_t CTP_I2C_WRITE(struct i2c_client *client, uint16_t address, uint8_t *buf, uint16_t len)
{
struct i2c_msg msg;
int32_t ret = -1;
int32_t retries = 0;
mutex_lock(&ts->xbuf_lock);
msg.flags = !I2C_M_RD;
msg.addr = address;
msg.len = len;
memcpy(ts->xbuf, buf, len);
msg.buf = ts->xbuf;
while (retries < 5) {
ret = i2c_transfer(client->adapter, &msg, 1);
if (ret == 1) break;
retries++;
}
if (unlikely(retries == 5)) {
NVT_ERR("error, ret=%d\n", ret);
ret = -EIO;
}
mutex_unlock(&ts->xbuf_lock);
return ret;
}
/*******************************************************
Description:
Novatek touchscreen set index/page/addr address.
return:
Executive outcomes. 0---succeed. -5---access fail.
*******************************************************/
int32_t nvt_set_page(uint16_t i2c_addr, uint32_t addr)
{
uint8_t buf[4] = {0};
buf[0] = 0xFF; //set index/page/addr command
buf[1] = (addr >> 16) & 0xFF;
buf[2] = (addr >> 8) & 0xFF;
return CTP_I2C_WRITE(ts->client, i2c_addr, buf, 3);
}
/*******************************************************
Description:
Novatek touchscreen reset MCU then into idle mode
function.
return:
n.a.
*******************************************************/
void nvt_sw_reset_idle(void)
{
uint8_t buf[4]={0};
//---write i2c cmds to reset idle---
buf[0]=0x00;
buf[1]=0xA5;
CTP_I2C_WRITE(ts->client, I2C_HW_Address, buf, 2);
msleep(15);
}
/*******************************************************
Description:
Novatek touchscreen reset MCU (boot) function.
return:
n.a.
*******************************************************/
void nvt_bootloader_reset(void)
{
uint8_t buf[8] = {0};
NVT_LOG("start\n");
//---write i2c cmds to reset---
buf[0] = 0x00;
buf[1] = 0x69;
CTP_I2C_WRITE(ts->client, I2C_HW_Address, buf, 2);
// need 35ms delay after bootloader reset
msleep(35);
NVT_LOG("end\n");
}
/*******************************************************
Description:
Novatek touchscreen clear FW status function.
return:
Executive outcomes. 0---succeed. -1---fail.
*******************************************************/
int32_t nvt_clear_fw_status(void)
{
uint8_t buf[8] = {0};
int32_t i = 0;
const int32_t retry = 20;
for (i = 0; i < retry; i++) {
//---set xdata index to EVENT BUF ADDR---
nvt_set_page(I2C_FW_Address, ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE);
//---clear fw status---
buf[0] = EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE;
buf[1] = 0x00;
CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 2);
//---read fw status---
buf[0] = EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE;
buf[1] = 0xFF;
CTP_I2C_READ(ts->client, I2C_FW_Address, buf, 2);
if (buf[1] == 0x00)
break;
usleep_range(10000, 10000);
}
if (i >= retry) {
NVT_ERR("failed, i=%d, buf[1]=0x%02X\n", i, buf[1]);
return -1;
} else {
return 0;
}
}
/*******************************************************
Description:
Novatek touchscreen check FW status function.
return:
Executive outcomes. 0---succeed. -1---failed.
*******************************************************/
int32_t nvt_check_fw_status(void)
{
uint8_t buf[8] = {0};
int32_t i = 0;
const int32_t retry = 50;
usleep_range(20000, 20000);
for (i = 0; i < retry; i++) {
//---set xdata index to EVENT BUF ADDR---
nvt_set_page(I2C_FW_Address, ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE);
//---read fw status---
buf[0] = EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE;
buf[1] = 0x00;
CTP_I2C_READ(ts->client, I2C_FW_Address, buf, 2);
if ((buf[1] & 0xF0) == 0xA0)
break;
usleep_range(10000, 10000);
}
if (i >= retry) {
NVT_ERR("failed, i=%d, buf[1]=0x%02X\n", i, buf[1]);
return -1;
} else {
return 0;
}
}
/*******************************************************
Description:
Novatek touchscreen check FW reset state function.
return:
Executive outcomes. 0---succeed. -1---failed.
*******************************************************/
int32_t nvt_check_fw_reset_state(RST_COMPLETE_STATE check_reset_state)
{
uint8_t buf[8] = {0};
int32_t ret = 0;
int32_t retry = 0;
while (1) {
usleep_range(10000, 10000);
//---read reset state---
buf[0] = EVENT_MAP_RESET_COMPLETE;
buf[1] = 0x00;
CTP_I2C_READ(ts->client, I2C_FW_Address, buf, 6);
if ((buf[1] >= check_reset_state) && (buf[1] <= RESET_STATE_MAX)) {
ret = 0;
break;
}
retry++;
if(unlikely(retry > 100)) {
NVT_ERR("error, retry=%d, buf[1]=0x%02X, 0x%02X, 0x%02X, 0x%02X, 0x%02X\n",
retry, buf[1], buf[2], buf[3], buf[4], buf[5]);
ret = -1;
break;
}
}
return ret;
}
/*******************************************************
Description:
Novatek touchscreen get firmware related information
function.
return:
Executive outcomes. 0---success. -1---fail.
*******************************************************/
int32_t nvt_get_fw_info(void)
{
uint8_t buf[64] = {0};
uint32_t retry_count = 0;
int32_t ret = 0;
info_retry:
//---set xdata index to EVENT BUF ADDR---
nvt_set_page(I2C_FW_Address, ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_FWINFO);
//---read fw info---
buf[0] = EVENT_MAP_FWINFO;
CTP_I2C_READ(ts->client, I2C_FW_Address, buf, 39);
if ((buf[1] + buf[2]) != 0xFF) {
NVT_ERR("FW info is broken! fw_ver=0x%02X, ~fw_ver=0x%02X\n", buf[1], buf[2]);
if (retry_count < 3) {
retry_count++;
NVT_ERR("retry_count=%d\n", retry_count);
goto info_retry;
} else {
ts->fw_ver = 0;
ts->abs_x_max = TOUCH_DEFAULT_MAX_WIDTH;
ts->abs_y_max = TOUCH_DEFAULT_MAX_HEIGHT;
ts->max_button_num = TOUCH_KEY_NUM;
NVT_ERR("Set default fw_ver=%d, abs_x_max=%d, abs_y_max=%d, max_button_num=%d!\n",
ts->fw_ver, ts->abs_x_max, ts->abs_y_max, ts->max_button_num);
ret = -1;
goto out;
}
}
ts->fw_ver = buf[1];
ts->x_num = buf[3];
ts->y_num = buf[4];
ts->abs_x_max = (uint16_t)((buf[5] << 8) | buf[6]);
ts->abs_y_max = (uint16_t)((buf[7] << 8) | buf[8]);
ts->max_button_num = buf[11];
ts->nvt_pid = (uint16_t)((buf[36] << 8) | buf[35]);
if (ts->pen_support) {
ts->x_gang_num = buf[37];
ts->y_gang_num = buf[38];
}
NVT_LOG("fw_ver=0x%02X, fw_type=0x%02X, PID=0x%04X\n", ts->fw_ver, buf[14], ts->nvt_pid);
ret = 0;
out:
return ret;
}
/*******************************************************
Create Device Node (Proc Entry)
*******************************************************/
#if NVT_TOUCH_PROC
static struct proc_dir_entry *NVT_proc_entry;
#define DEVICE_NAME "NVTflash"
/*******************************************************
Description:
Novatek touchscreen /proc/NVTflash read function.
return:
Executive outcomes. 2---succeed. -5,-14---failed.
*******************************************************/
static ssize_t nvt_flash_read(struct file *file, char __user *buff, size_t count, loff_t *offp)
{
uint8_t str[68] = {0};
int32_t ret = -1;
int32_t retries = 0;
int8_t i2c_wr = 0;
if (count > sizeof(str)) {
NVT_ERR("error count=%zu\n", count);
return -EFAULT;
}
if (copy_from_user(str, buff, count)) {
NVT_ERR("copy from user error\n");
return -EFAULT;
}
#if NVT_TOUCH_ESD_PROTECT
/*
* stop esd check work to avoid case that 0x77 report righ after here to enable esd check again
* finally lead to trigger esd recovery bootloader reset
*/
cancel_delayed_work_sync(&nvt_esd_check_work);
nvt_esd_check_enable(false);
#endif /* #if NVT_TOUCH_ESD_PROTECT */
i2c_wr = str[0] >> 7;
if (i2c_wr == 0) { //I2C write
while (retries < 20) {
ret = CTP_I2C_WRITE(ts->client, (str[0] & 0x7F), &str[2], str[1]);
if (ret == 1)
break;
else
NVT_ERR("error, retries=%d, ret=%d\n", retries, ret);
retries++;
}
if (unlikely(retries == 20)) {
NVT_ERR("error, ret = %d\n", ret);
return -EIO;
}
return ret;
} else if (i2c_wr == 1) { //I2C read
while (retries < 20) {
ret = CTP_I2C_READ(ts->client, (str[0] & 0x7F), &str[2], str[1]);
if (ret == 2)
break;
else
NVT_ERR("error, retries=%d, ret=%d\n", retries, ret);
retries++;
}
// copy buff to user if i2c transfer
if (retries < 20) {
if (copy_to_user(buff, str, count))
return -EFAULT;
}
if (unlikely(retries == 20)) {
NVT_ERR("error, ret = %d\n", ret);
return -EIO;
}
return ret;
} else {
NVT_ERR("Call error, str[0]=%d\n", str[0]);
return -EFAULT;
}
}
/*******************************************************
Description:
Novatek touchscreen /proc/NVTflash open function.
return:
Executive outcomes. 0---succeed. -12---failed.
*******************************************************/
static int32_t nvt_flash_open(struct inode *inode, struct file *file)
{
struct nvt_flash_data *dev;
dev = kmalloc(sizeof(struct nvt_flash_data), GFP_KERNEL);
if (dev == NULL) {
NVT_ERR("Failed to allocate memory for nvt flash data\n");
return -ENOMEM;
}
rwlock_init(&dev->lock);
file->private_data = dev;
return 0;
}
/*******************************************************
Description:
Novatek touchscreen /proc/NVTflash close function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static int32_t nvt_flash_close(struct inode *inode, struct file *file)
{
struct nvt_flash_data *dev = file->private_data;
if (dev)
kfree(dev);
return 0;
}
static const struct file_operations nvt_flash_fops = {
.owner = THIS_MODULE,
.open = nvt_flash_open,
.release = nvt_flash_close,
.read = nvt_flash_read,
};
/*******************************************************
Description:
Novatek touchscreen /proc/NVTflash initial function.
return:
Executive outcomes. 0---succeed. -12---failed.
*******************************************************/
static int32_t nvt_flash_proc_init(void)
{
NVT_proc_entry = proc_create(DEVICE_NAME, 0444, NULL,&nvt_flash_fops);
if (NVT_proc_entry == NULL) {
NVT_ERR("Failed!\n");
return -ENOMEM;
} else {
NVT_LOG("Succeeded!\n");
}
NVT_LOG("============================================================\n");
NVT_LOG("Create /proc/%s\n", DEVICE_NAME);
NVT_LOG("============================================================\n");
return 0;
}
/*******************************************************
Description:
Novatek touchscreen /proc/NVTflash deinitial function.
return:
n.a.
*******************************************************/
static void nvt_flash_proc_deinit(void)
{
if (NVT_proc_entry != NULL) {
remove_proc_entry(DEVICE_NAME, NULL);
NVT_proc_entry = NULL;
NVT_LOG("Removed /proc/%s\n", DEVICE_NAME);
}
}
#endif
#if WAKEUP_GESTURE
#define GESTURE_WORD_C 12
#define GESTURE_WORD_W 13
#define GESTURE_WORD_V 14
#define GESTURE_DOUBLE_CLICK 15
#define GESTURE_WORD_Z 16
#define GESTURE_WORD_M 17
#define GESTURE_WORD_O 18
#define GESTURE_WORD_e 19
#define GESTURE_WORD_S 20
#define GESTURE_SLIDE_UP 21
#define GESTURE_SLIDE_DOWN 22
#define GESTURE_SLIDE_LEFT 23
#define GESTURE_SLIDE_RIGHT 24
/* customized gesture id */
#define DATA_PROTOCOL 30
/* function page definition */
#define FUNCPAGE_GESTURE 1
/*******************************************************
Description:
Novatek touchscreen wake up gesture key report function.
return:
n.a.
*******************************************************/
void nvt_ts_wakeup_gesture_report(uint8_t gesture_id, uint8_t *data)
{
uint32_t keycode = 0;
uint8_t func_type = data[2];
uint8_t func_id = data[3];
/* support fw specifal data protocol */
if ((gesture_id == DATA_PROTOCOL) && (func_type == FUNCPAGE_GESTURE)) {
gesture_id = func_id;
} else if (gesture_id > DATA_PROTOCOL) {
NVT_ERR("gesture_id %d is invalid, func_type=%d, func_id=%d\n", gesture_id, func_type, func_id);
return;
}
NVT_LOG("gesture_id = %d\n", gesture_id);
switch (gesture_id) {
case GESTURE_WORD_C:
NVT_LOG("Gesture : Word-C.\n");
keycode = gesture_key_array[0];
break;
case GESTURE_WORD_W:
NVT_LOG("Gesture : Word-W.\n");
keycode = gesture_key_array[1];
break;
case GESTURE_WORD_V:
NVT_LOG("Gesture : Word-V.\n");
keycode = gesture_key_array[2];
break;
case GESTURE_DOUBLE_CLICK:
NVT_LOG("Gesture : Double Click.\n");
keycode = gesture_key_array[3];
break;
case GESTURE_WORD_Z:
NVT_LOG("Gesture : Word-Z.\n");
keycode = gesture_key_array[4];
break;
case GESTURE_WORD_M:
NVT_LOG("Gesture : Word-M.\n");
keycode = gesture_key_array[5];
break;
case GESTURE_WORD_O:
NVT_LOG("Gesture : Word-O.\n");
keycode = gesture_key_array[6];
break;
case GESTURE_WORD_e:
NVT_LOG("Gesture : Word-e.\n");
keycode = gesture_key_array[7];
break;
case GESTURE_WORD_S:
NVT_LOG("Gesture : Word-S.\n");
keycode = gesture_key_array[8];
break;
case GESTURE_SLIDE_UP:
NVT_LOG("Gesture : Slide UP.\n");
keycode = gesture_key_array[9];
break;
case GESTURE_SLIDE_DOWN:
NVT_LOG("Gesture : Slide DOWN.\n");
keycode = gesture_key_array[10];
break;
case GESTURE_SLIDE_LEFT:
NVT_LOG("Gesture : Slide LEFT.\n");
keycode = gesture_key_array[11];
break;
case GESTURE_SLIDE_RIGHT:
NVT_LOG("Gesture : Slide RIGHT.\n");
keycode = gesture_key_array[12];
break;
default:
break;
}
if (keycode > 0) {
input_report_key(ts->input_dev, keycode, 1);
input_sync(ts->input_dev);
input_report_key(ts->input_dev, keycode, 0);
input_sync(ts->input_dev);
}
}
#endif
/*******************************************************
Description:
Novatek touchscreen parse device tree function.
return:
n.a.
*******************************************************/
#ifdef CONFIG_OF
static void nvt_parse_dt(struct device *dev)
{
struct device_node *np = dev->of_node;
#if NVT_TOUCH_SUPPORT_HW_RST
ts->reset_gpio = of_get_named_gpio_flags(np, "novatek,reset-gpio", 0, &ts->reset_flags);
NVT_LOG("novatek,reset-gpio=%d\n", ts->reset_gpio);
#endif
ts->irq_gpio = of_get_named_gpio_flags(np, "novatek,irq-gpio", 0, &ts->irq_flags);
NVT_LOG("novatek,irq-gpio=%d\n", ts->irq_gpio);
ts->pen_support = of_property_read_bool(np, "novatek,pen-support");
NVT_LOG("novatek,pen-support=%d\n", ts->pen_support);
ts->stylus_resol_double = of_property_read_bool(np, "novatek,stylus-resol-double");
NVT_LOG("novatek,stylus-resol-double=%d\n", ts->stylus_resol_double);
}
#else
static void nvt_parse_dt(struct device *dev)
{
#if NVT_TOUCH_SUPPORT_HW_RST
ts->reset_gpio = NVTTOUCH_RST_PIN;
#endif
ts->irq_gpio = NVTTOUCH_INT_PIN;
}
#endif
/*******************************************************
Description:
Novatek touchscreen config and request gpio
return:
Executive outcomes. 0---succeed. not 0---failed.
*******************************************************/
static int nvt_gpio_config(struct nvt_ts_data *ts)
{
int32_t ret = 0;
#if NVT_TOUCH_SUPPORT_HW_RST
/* request RST-pin (Output/High) */
if (gpio_is_valid(ts->reset_gpio)) {
ret = gpio_request_one(ts->reset_gpio, GPIOF_OUT_INIT_HIGH, "NVT-tp-rst");
if (ret) {
NVT_ERR("Failed to request NVT-tp-rst GPIO\n");
goto err_request_reset_gpio;
}
}
#endif
/* request INT-pin (Input) */
if (gpio_is_valid(ts->irq_gpio)) {
ret = gpio_request_one(ts->irq_gpio, GPIOF_IN, "NVT-int");
if (ret) {
NVT_ERR("Failed to request NVT-int GPIO\n");
goto err_request_irq_gpio;
}
}
return ret;
err_request_irq_gpio:
#if NVT_TOUCH_SUPPORT_HW_RST
gpio_free(ts->reset_gpio);
err_request_reset_gpio:
#endif
return ret;
}
/*******************************************************
Description:
Novatek touchscreen deconfig gpio
return:
n.a.
*******************************************************/
static void nvt_gpio_deconfig(struct nvt_ts_data *ts)
{
if (gpio_is_valid(ts->irq_gpio))
gpio_free(ts->irq_gpio);
#if NVT_TOUCH_SUPPORT_HW_RST
if (gpio_is_valid(ts->reset_gpio))
gpio_free(ts->reset_gpio);
#endif
}
static uint8_t nvt_fw_recovery(uint8_t *point_data)
{
uint8_t i = 0;
uint8_t detected = true;
/* check pattern */
for (i=1 ; i<7 ; i++) {
if (point_data[i] != 0x77) {
detected = false;
break;
}
}
return detected;
}
#if NVT_TOUCH_ESD_PROTECT
void nvt_esd_check_enable(uint8_t enable)
{
/* update interrupt timer */
irq_timer = jiffies;
/* clear esd_retry counter, if protect function is enabled */
esd_retry = enable ? 0 : esd_retry;
/* enable/disable esd check flag */
esd_check = enable;
}
static void nvt_esd_check_func(struct work_struct *work)
{
unsigned int timer = jiffies_to_msecs(jiffies - irq_timer);
//NVT_ERR("esd_check = %d (retry %d)\n", esd_check, esd_retry); //DEBUG
if ((timer > NVT_TOUCH_ESD_CHECK_PERIOD) && esd_check) {
mutex_lock(&ts->lock);
NVT_ERR("do ESD recovery, timer = %d, retry = %d\n", timer, esd_retry);
/* do esd recovery, bootloader reset */
nvt_bootloader_reset();
mutex_unlock(&ts->lock);
/* update interrupt timer */
irq_timer = jiffies;
/* update esd_retry counter */
esd_retry++;
}
queue_delayed_work(nvt_esd_check_wq, &nvt_esd_check_work,
msecs_to_jiffies(NVT_TOUCH_ESD_CHECK_PERIOD));
}
#endif /* #if NVT_TOUCH_ESD_PROTECT */
#define PEN_DATA_LEN 14
#if CHECK_PEN_DATA_CHECKSUM
static int32_t nvt_ts_pen_data_checksum(uint8_t *buf, uint8_t length)
{
uint8_t checksum = 0;
int32_t i = 0;
// Calculate checksum
for (i = 0; i < length - 1; i++) {
checksum += buf[i];
}
checksum = (~checksum + 1);
// Compare ckecksum and dump fail data
if (checksum != buf[length - 1]) {
NVT_ERR("pen packet checksum not match. (buf[%d]=0x%02X, checksum=0x%02X)\n",
length - 1, buf[length - 1], checksum);
//--- dump pen buf ---
for (i = 0; i < length; i++) {
printk("%02X ", buf[i]);
}
printk("\n");
return -1;
}
return 0;
}
#endif // #if CHECK_PEN_DATA_CHECKSUM
void nvt_read_fw_history(uint32_t fw_history_addr)
{
uint8_t i = 0;
uint8_t buf[65];
char str[128];
if (fw_history_addr == 0)
return;
nvt_set_page(I2C_FW_Address, fw_history_addr);
buf[0] = (uint8_t) (fw_history_addr & 0xFF);
CTP_I2C_READ(ts->client, I2C_FW_Address, buf, 64+1); //read 64bytes history
//print all data
NVT_LOG("fw history 0x%X: \n", fw_history_addr);
for (i = 0; i < 4; i++) {
snprintf(str, sizeof(str),
"%02X %02X %02X %02X %02X %02X %02X %02X "
"%02X %02X %02X %02X %02X %02X %02X %02X\n",
buf[1+i*16], buf[2+i*16], buf[3+i*16], buf[4+i*16],
buf[5+i*16], buf[6+i*16], buf[7+i*16], buf[8+i*16],
buf[9+i*16], buf[10+i*16], buf[11+i*16], buf[12+i*16],
buf[13+i*16], buf[14+i*16], buf[15+i*16], buf[16+i*16]);
NVT_LOG("%s", str);
}
nvt_set_page(I2C_FW_Address, ts->mmap->EVENT_BUF_ADDR);
}
#define POINT_DATA_LEN 65
/*******************************************************
Description:
Novatek touchscreen work function.
return:
n.a.
*******************************************************/
static irqreturn_t nvt_ts_work_func(int irq, void *data)
{
int32_t ret = -1;
uint8_t point_data[POINT_DATA_LEN + PEN_DATA_LEN + 1] = {0};
uint32_t position = 0;
uint32_t input_x = 0;
uint32_t input_y = 0;
uint32_t input_w = 0;
uint32_t input_p = 0;
uint8_t input_id = 0;
#if MT_PROTOCOL_B
uint8_t press_id[TOUCH_MAX_FINGER_NUM] = {0};
#endif /* MT_PROTOCOL_B */
int32_t i = 0;
int32_t finger_cnt = 0;
uint8_t pen_format_id = 0;
uint32_t pen_x = 0;
uint32_t pen_y = 0;
uint32_t pen_pressure = 0;
uint32_t pen_distance = 0;
int8_t pen_tilt_x = 0;
int8_t pen_tilt_y = 0;
uint32_t pen_btn1 = 0;
uint32_t pen_btn2 = 0;
uint32_t pen_battery = 0;
#if WAKEUP_GESTURE
if (bTouchIsAwake == 0) {
pm_wakeup_event(&ts->input_dev->dev, 5000);
}
#endif
mutex_lock(&ts->lock);
if (ts->pen_support)
ret = CTP_I2C_READ(ts->client, I2C_FW_Address, point_data, POINT_DATA_LEN + PEN_DATA_LEN + 1);
else
ret = CTP_I2C_READ(ts->client, I2C_FW_Address, point_data, POINT_DATA_LEN + 1);
if (ret < 0) {
NVT_ERR("CTP_I2C_READ failed.(%d)\n", ret);
goto XFER_ERROR;
}
/*
//--- dump I2C buf ---
for (i = 0; i < 10; i++) {
printk("%02X %02X %02X %02X %02X %02X ",
point_data[1+i*6], point_data[2+i*6], point_data[3+i*6], point_data[4+i*6], point_data[5+i*6], point_data[6+i*6]);
}
printk("\n");
*/
if (nvt_fw_recovery(point_data)) {
#if NVT_TOUCH_ESD_PROTECT
nvt_esd_check_enable(true);
#endif /* #if NVT_TOUCH_ESD_PROTECT */
goto XFER_ERROR;
}
#if WAKEUP_GESTURE
if (bTouchIsAwake == 0) {
input_id = (uint8_t)(point_data[1] >> 3);
nvt_ts_wakeup_gesture_report(input_id, point_data);
mutex_unlock(&ts->lock);
return IRQ_HANDLED;
}
#endif
finger_cnt = 0;
for (i = 0; i < ts->max_touch_num; i++) {
position = 1 + 6 * i;
input_id = (uint8_t)(point_data[position + 0] >> 3);
if ((input_id == 0) || (input_id > ts->max_touch_num))
continue;
if (((point_data[position] & 0x07) == 0x01) || ((point_data[position] & 0x07) == 0x02)) { //finger down (enter & moving)
#if NVT_TOUCH_ESD_PROTECT
/* update interrupt timer */
irq_timer = jiffies;
#endif /* #if NVT_TOUCH_ESD_PROTECT */
input_x = (uint32_t)(point_data[position + 1] << 4) + (uint32_t) (point_data[position + 3] >> 4);
input_y = (uint32_t)(point_data[position + 2] << 4) + (uint32_t) (point_data[position + 3] & 0x0F);
if ((input_x < 0) || (input_y < 0))
continue;
if ((input_x > ts->abs_x_max) || (input_y > ts->abs_y_max))
continue;
input_w = (uint32_t)(point_data[position + 4]);
if (input_w == 0)
input_w = 1;
if (i < 2) {
input_p = (uint32_t)(point_data[position + 5]) + (uint32_t)(point_data[i + 63] << 8);
if (input_p > TOUCH_FORCE_NUM)
input_p = TOUCH_FORCE_NUM;
} else {
input_p = (uint32_t)(point_data[position + 5]);
}
if (input_p == 0)
input_p = 1;
#if MT_PROTOCOL_B
press_id[input_id - 1] = 1;
input_mt_slot(ts->input_dev, input_id - 1);
input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true);
#else /* MT_PROTOCOL_B */
input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, input_id - 1);
input_report_key(ts->input_dev, BTN_TOUCH, 1);
#endif /* MT_PROTOCOL_B */
input_report_abs(ts->input_dev, ABS_MT_POSITION_X, input_x);
input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, input_y);
input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w);
input_report_abs(ts->input_dev, ABS_MT_PRESSURE, input_p);
#if MT_PROTOCOL_B
#else /* MT_PROTOCOL_B */
input_mt_sync(ts->input_dev);
#endif /* MT_PROTOCOL_B */
finger_cnt++;
}
}
#if MT_PROTOCOL_B
for (i = 0; i < ts->max_touch_num; i++) {
if (press_id[i] != 1) {
input_mt_slot(ts->input_dev, i);
input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0);
input_report_abs(ts->input_dev, ABS_MT_PRESSURE, 0);
input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, false);
}
}
input_report_key(ts->input_dev, BTN_TOUCH, (finger_cnt > 0));
#else /* MT_PROTOCOL_B */
if (finger_cnt == 0) {
input_report_key(ts->input_dev, BTN_TOUCH, 0);
input_mt_sync(ts->input_dev);
}
#endif /* MT_PROTOCOL_B */
#if TOUCH_KEY_NUM > 0
if (point_data[61] == 0xF8) {
#if NVT_TOUCH_ESD_PROTECT
/* update interrupt timer */
irq_timer = jiffies;
#endif /* #if NVT_TOUCH_ESD_PROTECT */
for (i = 0; i < ts->max_button_num; i++) {
input_report_key(ts->input_dev, touch_key_array[i], ((point_data[62] >> i) & 0x01));
}
} else {
for (i = 0; i < ts->max_button_num; i++) {
input_report_key(ts->input_dev, touch_key_array[i], 0);
}
}
#endif
input_sync(ts->input_dev);
if (ts->pen_support) {
/*
//--- dump pen buf ---
printk("%02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n",
point_data[66], point_data[67], point_data[68], point_data[69], point_data[70],
point_data[71], point_data[72], point_data[73], point_data[74], point_data[75],
point_data[76], point_data[77], point_data[78], point_data[79]);
*/
#if CHECK_PEN_DATA_CHECKSUM
if (nvt_ts_pen_data_checksum(&point_data[66], PEN_DATA_LEN)) {
// pen data packet checksum not match, skip it
goto XFER_ERROR;
}
#endif // #if CHECK_PEN_DATA_CHECKSUM
// parse and handle pen report
pen_format_id = point_data[66];
if (pen_format_id != 0xFF) {
if (pen_format_id == 0x01) {
// report pen data
pen_x = (uint32_t)(point_data[67] << 8) + (uint32_t)(point_data[68]);
pen_y = (uint32_t)(point_data[69] << 8) + (uint32_t)(point_data[70]);
pen_pressure = (uint32_t)(point_data[71] << 8) + (uint32_t)(point_data[72]);
pen_tilt_x = (int32_t)point_data[73];
pen_tilt_y = (int32_t)point_data[74];
pen_distance = (uint32_t)(point_data[75] << 8) + (uint32_t)(point_data[76]);
pen_btn1 = (uint32_t)(point_data[77] & 0x01);
pen_btn2 = (uint32_t)((point_data[77] >> 1) & 0x01);
pen_battery = (uint32_t)point_data[78];
// printk("x=%d,y=%d,p=%d,tx=%d,ty=%d,d=%d,b1=%d,b2=%d,bat=%d\n", pen_x, pen_y, pen_pressure,
// pen_tilt_x, pen_tilt_y, pen_distance, pen_btn1, pen_btn2, pen_battery);
input_report_abs(ts->pen_input_dev, ABS_X, pen_x);
input_report_abs(ts->pen_input_dev, ABS_Y, pen_y);
input_report_abs(ts->pen_input_dev, ABS_PRESSURE, pen_pressure);
input_report_key(ts->pen_input_dev, BTN_TOUCH, !!pen_pressure);
input_report_abs(ts->pen_input_dev, ABS_TILT_X, pen_tilt_x);
input_report_abs(ts->pen_input_dev, ABS_TILT_Y, pen_tilt_y);
input_report_abs(ts->pen_input_dev, ABS_DISTANCE, pen_distance);
input_report_key(ts->pen_input_dev, BTN_TOOL_PEN, !!pen_distance || !!pen_pressure);
input_report_key(ts->pen_input_dev, BTN_STYLUS, pen_btn1);
input_report_key(ts->pen_input_dev, BTN_STYLUS2, pen_btn2);
// TBD: pen battery event report
// NVT_LOG("pen_battery=%d\n", pen_battery);
} else if (pen_format_id == 0xF0) {
// report Pen ID
} else {
NVT_ERR("Unknown pen format id!\n");
goto XFER_ERROR;
}
} else { // pen_format_id = 0xFF, i.e. no pen present
input_report_abs(ts->pen_input_dev, ABS_X, 0);
input_report_abs(ts->pen_input_dev, ABS_Y, 0);
input_report_abs(ts->pen_input_dev, ABS_PRESSURE, 0);
input_report_abs(ts->pen_input_dev, ABS_TILT_X, 0);
input_report_abs(ts->pen_input_dev, ABS_TILT_Y, 0);
input_report_abs(ts->pen_input_dev, ABS_DISTANCE, 0);
input_report_key(ts->pen_input_dev, BTN_TOUCH, 0);
input_report_key(ts->pen_input_dev, BTN_TOOL_PEN, 0);
input_report_key(ts->pen_input_dev, BTN_STYLUS, 0);
input_report_key(ts->pen_input_dev, BTN_STYLUS2, 0);
}
input_sync(ts->pen_input_dev);
} /* if (ts->pen_support) */
XFER_ERROR:
mutex_unlock(&ts->lock);
return IRQ_HANDLED;
}
/*******************************************************
Description:
Novatek touchscreen check and stop crc reboot loop.
return:
n.a.
*******************************************************/
void nvt_stop_crc_reboot(void)
{
uint8_t buf[8] = {0};
int32_t retry = 0;
//read dummy buffer to check CRC fail reboot is happening or not
//---change I2C index to prevent geting 0xFF, but not 0xFC---
nvt_set_page(I2C_BLDR_Address, CHIP_VER_TRIM_ADDR);
//---read to check if buf is 0xFC which means IC is in CRC reboot ---
buf[0] = CHIP_VER_TRIM_ADDR & 0xFF;
CTP_I2C_READ(ts->client, I2C_BLDR_Address, buf, 4);
if ((buf[1] == 0xFC) ||
((buf[1] == 0xFF) && (buf[2] == 0xFF) && (buf[3] == 0xFF))) {
//IC is in CRC fail reboot loop, needs to be stopped!
for (retry = 5; retry > 0; retry--) {
//---write i2c cmds to reset idle : 1st---
buf[0]=0x00;
buf[1]=0xA5;
CTP_I2C_WRITE(ts->client, I2C_HW_Address, buf, 2);
//---write i2c cmds to reset idle : 2rd---
buf[0]=0x00;
buf[1]=0xA5;
CTP_I2C_WRITE(ts->client, I2C_HW_Address, buf, 2);
msleep(1);
//---clear CRC_ERR_FLAG---
nvt_set_page(I2C_BLDR_Address, 0x3F135);
buf[0] = 0x35;
buf[1] = 0xA5;
CTP_I2C_WRITE(ts->client, I2C_BLDR_Address, buf, 2);
//---check CRC_ERR_FLAG---
nvt_set_page(I2C_BLDR_Address, 0x3F135);
buf[0] = 0x35;
buf[1] = 0x00;
CTP_I2C_READ(ts->client, I2C_BLDR_Address, buf, 2);
if (buf[1] == 0xA5)
break;
}
if (retry == 0)
NVT_ERR("CRC auto reboot is not able to be stopped! buf[1]=0x%02X\n", buf[1]);
}
return;
}
/*******************************************************
Description:
Novatek touchscreen check chip version trim function.
return:
Executive outcomes. 0---NVT IC. -1---not NVT IC.
*******************************************************/
static int8_t nvt_ts_check_chip_ver_trim(uint32_t chip_ver_trim_addr)
{
uint8_t buf[8] = {0};
int32_t retry = 0;
int32_t list = 0;
int32_t i = 0;
int32_t found_nvt_chip = 0;
int32_t ret = -1;
nvt_bootloader_reset(); // NOT in retry loop
//---Check for 5 times---
for (retry = 5; retry > 0; retry--) {
nvt_sw_reset_idle();
buf[0] = 0x00;
buf[1] = 0x35;
CTP_I2C_WRITE(ts->client, I2C_HW_Address, buf, 2);
msleep(10);
nvt_set_page(I2C_BLDR_Address, chip_ver_trim_addr);
buf[0] = chip_ver_trim_addr & 0xFF;
buf[1] = 0x00;
buf[2] = 0x00;
buf[3] = 0x00;
buf[4] = 0x00;
buf[5] = 0x00;
buf[6] = 0x00;
CTP_I2C_READ(ts->client, I2C_BLDR_Address, buf, 7);
NVT_LOG("buf[1]=0x%02X, buf[2]=0x%02X, buf[3]=0x%02X, buf[4]=0x%02X, buf[5]=0x%02X, buf[6]=0x%02X\n",
buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
//---Stop CRC check to prevent IC auto reboot---
if ((buf[1] == 0xFC) ||
((buf[1] == 0xFF) && (buf[2] == 0xFF) && (buf[3] == 0xFF))) {
nvt_stop_crc_reboot();
continue;
}
// compare read chip id on supported list
for (list = 0; list < (sizeof(trim_id_table) / sizeof(struct nvt_ts_trim_id_table)); list++) {
found_nvt_chip = 0;
// compare each byte
for (i = 0; i < NVT_ID_BYTE_MAX; i++) {
if (trim_id_table[list].mask[i]) {
if (buf[i + 1] != trim_id_table[list].id[i])
break;
}
}
if (i == NVT_ID_BYTE_MAX) {
found_nvt_chip = 1;
}
if (found_nvt_chip) {
NVT_LOG("This is NVT touch IC\n");
ts->mmap = trim_id_table[list].mmap;
ret = 0;
goto out;
} else {
ts->mmap = NULL;
ret = -1;
}
}
msleep(10);
}
out:
return ret;
}
#if defined(CONFIG_DRM_PANEL)
static int nvt_ts_check_dt(struct device_node *np)
{
int i;
int count;
struct device_node *node;
struct drm_panel *panel;
count = of_count_phandle_with_args(np, "panel", NULL);
if (count <= 0)
return 0;
for (i = 0; i < count; i++) {
node = of_parse_phandle(np, "panel", i);
panel = of_drm_find_panel(node);
of_node_put(node);
if (!IS_ERR(panel)) {
active_panel = panel;
return 0;
}
}
return PTR_ERR(panel);
}
#endif
/*******************************************************
Description:
Novatek touchscreen driver probe function.
return:
Executive outcomes. 0---succeed. negative---failed
*******************************************************/
static int32_t nvt_ts_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
int32_t ret = 0;
#if defined(CONFIG_DRM_PANEL)
struct device_node *dp = NULL;
#endif
#if ((TOUCH_KEY_NUM > 0) || WAKEUP_GESTURE)
int32_t retry = 0;
#endif
#if defined(CONFIG_DRM_PANEL)
dp = client->dev.of_node;
ret = nvt_ts_check_dt(dp);
if (ret == -EPROBE_DEFER) {
return ret;
}
if (ret) {
ret = -ENODEV;
return ret;
}
#endif
NVT_LOG("start\n");
ts = (struct nvt_ts_data *)kzalloc(sizeof(struct nvt_ts_data), GFP_KERNEL);
if (ts == NULL) {
NVT_ERR("failed to allocated memory for nvt ts data\n");
return -ENOMEM;
}
ts->xbuf = (uint8_t *)kzalloc(NVT_XBUF_LEN, GFP_KERNEL);
if (ts->xbuf == NULL) {
NVT_ERR("kzalloc for xbuf failed!\n");
ret = -ENOMEM;
goto err_malloc_xbuf;
}
ts->client = client;
i2c_set_clientdata(client, ts);
//---parse dts---
nvt_parse_dt(&client->dev);
//---request and config GPIOs---
ret = nvt_gpio_config(ts);
if (ret) {
NVT_ERR("gpio config error!\n");
goto err_gpio_config_failed;
}
//---check i2c func.---
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
NVT_ERR("i2c_check_functionality failed. (no I2C_FUNC_I2C)\n");
ret = -ENODEV;
goto err_check_functionality_failed;
}
mutex_init(&ts->lock);
mutex_init(&ts->xbuf_lock);
// need 10ms delay after POR(power on reset)
msleep(10);
//---check chip version trim---
ret = nvt_ts_check_chip_ver_trim(CHIP_VER_TRIM_ADDR);
if (ret) {
NVT_LOG("try to check from old chip ver trim address\n");
ret = nvt_ts_check_chip_ver_trim(CHIP_VER_TRIM_OLD_ADDR);
if (ret) {
NVT_ERR("chip is not identified\n");
ret = -EINVAL;
goto err_chipvertrim_failed;
}
}
nvt_bootloader_reset();
nvt_check_fw_reset_state(RESET_STATE_INIT);
nvt_get_fw_info();
//---allocate input device---
ts->input_dev = input_allocate_device();
if (ts->input_dev == NULL) {
NVT_ERR("allocate input device failed\n");
ret = -ENOMEM;
goto err_input_dev_alloc_failed;
}
ts->max_touch_num = TOUCH_MAX_FINGER_NUM;
#if TOUCH_KEY_NUM > 0
ts->max_button_num = TOUCH_KEY_NUM;
#endif
ts->int_trigger_type = INT_TRIGGER_TYPE;
//---set input device info.---
ts->input_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
ts->input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
ts->input_dev->propbit[0] = BIT(INPUT_PROP_DIRECT);
#if MT_PROTOCOL_B
input_mt_init_slots(ts->input_dev, ts->max_touch_num, 0);
#endif
input_set_abs_params(ts->input_dev, ABS_MT_PRESSURE, 0, TOUCH_FORCE_NUM, 0, 0); //pressure = TOUCH_FORCE_NUM
#if TOUCH_MAX_FINGER_NUM > 1
input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0); //area = 255
input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, 0, ts->abs_x_max, 0, 0);
input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, 0, ts->abs_y_max, 0, 0);
#if MT_PROTOCOL_B
// no need to set ABS_MT_TRACKING_ID, input_mt_init_slots() already set it
#else
input_set_abs_params(ts->input_dev, ABS_MT_TRACKING_ID, 0, ts->max_touch_num, 0, 0);
#endif //MT_PROTOCOL_B
#endif //TOUCH_MAX_FINGER_NUM > 1
#if TOUCH_KEY_NUM > 0
for (retry = 0; retry < ts->max_button_num; retry++) {
input_set_capability(ts->input_dev, EV_KEY, touch_key_array[retry]);
}
#endif
#if WAKEUP_GESTURE
for (retry = 0; retry < (sizeof(gesture_key_array) / sizeof(gesture_key_array[0])); retry++) {
input_set_capability(ts->input_dev, EV_KEY, gesture_key_array[retry]);
}
#endif
sprintf(ts->phys, "input/ts");
ts->input_dev->name = NVT_TS_NAME;
ts->input_dev->phys = ts->phys;
ts->input_dev->id.bustype = BUS_I2C;
//---register input device---
ret = input_register_device(ts->input_dev);
if (ret) {
NVT_ERR("register input device (%s) failed. ret=%d\n", ts->input_dev->name, ret);
goto err_input_register_device_failed;
}
if (ts->pen_support) {
//---allocate pen input device---
ts->pen_input_dev = input_allocate_device();
if (ts->pen_input_dev == NULL) {
NVT_ERR("allocate pen input device failed\n");
ret = -ENOMEM;
goto err_pen_input_dev_alloc_failed;
}
//---set pen input device info.---
ts->pen_input_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
ts->pen_input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
ts->pen_input_dev->keybit[BIT_WORD(BTN_TOOL_PEN)] |= BIT_MASK(BTN_TOOL_PEN);
//ts->pen_input_dev->keybit[BIT_WORD(BTN_TOOL_RUBBER)] |= BIT_MASK(BTN_TOOL_RUBBER);
ts->pen_input_dev->keybit[BIT_WORD(BTN_STYLUS)] |= BIT_MASK(BTN_STYLUS);
ts->pen_input_dev->keybit[BIT_WORD(BTN_STYLUS2)] |= BIT_MASK(BTN_STYLUS2);
ts->pen_input_dev->propbit[0] = BIT(INPUT_PROP_DIRECT);
if (ts->stylus_resol_double) {
input_set_abs_params(ts->pen_input_dev, ABS_X, 0, ts->abs_x_max * 2, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_Y, 0, ts->abs_y_max * 2, 0, 0);
} else {
input_set_abs_params(ts->pen_input_dev, ABS_X, 0, ts->abs_x_max, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_Y, 0, ts->abs_y_max, 0, 0);
}
input_set_abs_params(ts->pen_input_dev, ABS_PRESSURE, 0, PEN_PRESSURE_MAX, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_DISTANCE, 0, PEN_DISTANCE_MAX, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_TILT_X, PEN_TILT_MIN, PEN_TILT_MAX, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_TILT_Y, PEN_TILT_MIN, PEN_TILT_MAX, 0, 0);
sprintf(ts->pen_phys, "input/pen");
ts->pen_input_dev->name = NVT_PEN_NAME;
ts->pen_input_dev->phys = ts->pen_phys;
ts->pen_input_dev->id.bustype = BUS_I2C;
//---register pen input device---
ret = input_register_device(ts->pen_input_dev);
if (ret) {
NVT_ERR("register pen input device (%s) failed. ret=%d\n", ts->pen_input_dev->name, ret);
goto err_pen_input_register_device_failed;
}
} /* if (ts->pen_support) */
//---set int-pin & request irq---
client->irq = gpio_to_irq(ts->irq_gpio);
if (client->irq) {
NVT_LOG("int_trigger_type=%d\n", ts->int_trigger_type);
ts->irq_enabled = true;
ret = request_threaded_irq(client->irq, NULL, nvt_ts_work_func,
ts->int_trigger_type | IRQF_ONESHOT, NVT_I2C_NAME, ts);
if (ret != 0) {
NVT_ERR("request irq failed. ret=%d\n", ret);
goto err_int_request_failed;
} else {
nvt_irq_enable(false);
NVT_LOG("request irq %d succeed\n", client->irq);
}
}
#if WAKEUP_GESTURE
device_init_wakeup(&ts->input_dev->dev, 1);
#endif
#if BOOT_UPDATE_FIRMWARE
nvt_fwu_wq = alloc_workqueue("nvt_fwu_wq", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
if (!nvt_fwu_wq) {
NVT_ERR("nvt_fwu_wq create workqueue failed\n");
ret = -ENOMEM;
goto err_create_nvt_fwu_wq_failed;
}
INIT_DELAYED_WORK(&ts->nvt_fwu_work, Boot_Update_Firmware);
// please make sure boot update start after display reset(RESX) sequence
queue_delayed_work(nvt_fwu_wq, &ts->nvt_fwu_work, msecs_to_jiffies(14000));
#endif
NVT_LOG("NVT_TOUCH_ESD_PROTECT is %d\n", NVT_TOUCH_ESD_PROTECT);
#if NVT_TOUCH_ESD_PROTECT
INIT_DELAYED_WORK(&nvt_esd_check_work, nvt_esd_check_func);
nvt_esd_check_wq = alloc_workqueue("nvt_esd_check_wq", WQ_MEM_RECLAIM, 1);
if (!nvt_esd_check_wq) {
NVT_ERR("nvt_esd_check_wq create workqueue failed\n");
ret = -ENOMEM;
goto err_create_nvt_esd_check_wq_failed;
}
queue_delayed_work(nvt_esd_check_wq, &nvt_esd_check_work,
msecs_to_jiffies(NVT_TOUCH_ESD_CHECK_PERIOD));
#endif /* #if NVT_TOUCH_ESD_PROTECT */
//---set device node---
#if NVT_TOUCH_PROC
ret = nvt_flash_proc_init();
if (ret != 0) {
NVT_ERR("nvt flash proc init failed. ret=%d\n", ret);
goto err_flash_proc_init_failed;
}
#endif
#if NVT_TOUCH_EXT_PROC
ret = nvt_extra_proc_init();
if (ret != 0) {
NVT_ERR("nvt extra proc init failed. ret=%d\n", ret);
goto err_extra_proc_init_failed;
}
#endif
#if NVT_TOUCH_MP
ret = nvt_mp_proc_init();
if (ret != 0) {
NVT_ERR("nvt mp proc init failed. ret=%d\n", ret);
goto err_mp_proc_init_failed;
}
#endif
#if defined(CONFIG_FB)
#if defined(CONFIG_DRM_PANEL)
ts->drm_panel_notif.notifier_call = nvt_drm_panel_notifier_callback;
if (active_panel) {
ret = drm_panel_notifier_register(active_panel, &ts->drm_panel_notif);
if (ret < 0) {
NVT_ERR("register drm_panel_notifier failed. ret=%d\n", ret);
goto err_register_drm_panel_notif_failed;
}
}
#elif defined(_MSM_DRM_NOTIFY_H_)
ts->drm_notif.notifier_call = nvt_drm_notifier_callback;
ret = msm_drm_register_client(&ts->drm_notif);
if(ret) {
NVT_ERR("register drm_notifier failed. ret=%d\n", ret);
goto err_register_drm_notif_failed;
}
#else
ts->fb_notif.notifier_call = nvt_fb_notifier_callback;
ret = fb_register_client(&ts->fb_notif);
if(ret) {
NVT_ERR("register fb_notifier failed. ret=%d\n", ret);
goto err_register_fb_notif_failed;
}
#endif
#elif defined(CONFIG_HAS_EARLYSUSPEND)
ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
ts->early_suspend.suspend = nvt_ts_early_suspend;
ts->early_suspend.resume = nvt_ts_late_resume;
ret = register_early_suspend(&ts->early_suspend);
if(ret) {
NVT_ERR("register early suspend failed. ret=%d\n", ret);
goto err_register_early_suspend_failed;
}
#endif
bTouchIsAwake = 1;
NVT_LOG("end\n");
nvt_irq_enable(true);
return 0;
#if defined(CONFIG_FB)
#if defined(CONFIG_DRM_PANEL)
err_register_drm_panel_notif_failed:
#elif defined(_MSM_DRM_NOTIFY_H_)
err_register_drm_notif_failed:
#else
err_register_fb_notif_failed:
#endif
#elif defined(CONFIG_HAS_EARLYSUSPEND)
err_register_early_suspend_failed:
#endif
#if NVT_TOUCH_MP
nvt_mp_proc_deinit();
err_mp_proc_init_failed:
#endif
#if NVT_TOUCH_EXT_PROC
nvt_extra_proc_deinit();
err_extra_proc_init_failed:
#endif
#if NVT_TOUCH_PROC
nvt_flash_proc_deinit();
err_flash_proc_init_failed:
#endif
#if NVT_TOUCH_ESD_PROTECT
if (nvt_esd_check_wq) {
cancel_delayed_work_sync(&nvt_esd_check_work);
destroy_workqueue(nvt_esd_check_wq);
nvt_esd_check_wq = NULL;
}
err_create_nvt_esd_check_wq_failed:
#endif
#if BOOT_UPDATE_FIRMWARE
if (nvt_fwu_wq) {
cancel_delayed_work_sync(&ts->nvt_fwu_work);
destroy_workqueue(nvt_fwu_wq);
nvt_fwu_wq = NULL;
}
err_create_nvt_fwu_wq_failed:
#endif
#if WAKEUP_GESTURE
device_init_wakeup(&ts->input_dev->dev, 0);
#endif
free_irq(client->irq, ts);
err_int_request_failed:
if (ts->pen_support) {
input_unregister_device(ts->pen_input_dev);
ts->pen_input_dev = NULL;
}
err_pen_input_register_device_failed:
if (ts->pen_support) {
if (ts->pen_input_dev) {
input_free_device(ts->pen_input_dev);
ts->pen_input_dev = NULL;
}
}
err_pen_input_dev_alloc_failed:
input_unregister_device(ts->input_dev);
ts->input_dev = NULL;
err_input_register_device_failed:
if (ts->input_dev) {
input_free_device(ts->input_dev);
ts->input_dev = NULL;
}
err_input_dev_alloc_failed:
err_chipvertrim_failed:
mutex_destroy(&ts->xbuf_lock);
mutex_destroy(&ts->lock);
err_check_functionality_failed:
nvt_gpio_deconfig(ts);
err_gpio_config_failed:
i2c_set_clientdata(client, NULL);
if (ts->xbuf) {
kfree(ts->xbuf);
ts->xbuf = NULL;
}
err_malloc_xbuf:
if (ts) {
kfree(ts);
ts = NULL;
}
return ret;
}
/*******************************************************
Description:
Novatek touchscreen driver release function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static int32_t nvt_ts_remove(struct i2c_client *client)
{
NVT_LOG("Removing driver...\n");
#if defined(CONFIG_FB)
#if defined(CONFIG_DRM_PANEL)
if (active_panel) {
if (drm_panel_notifier_unregister(active_panel, &ts->drm_panel_notif))
NVT_ERR("Error occurred while unregistering drm_panel_notifier.\n");
}
#elif defined(_MSM_DRM_NOTIFY_H_)
if (msm_drm_unregister_client(&ts->drm_notif))
NVT_ERR("Error occurred while unregistering drm_notifier.\n");
#else
if (fb_unregister_client(&ts->fb_notif))
NVT_ERR("Error occurred while unregistering fb_notifier.\n");
#endif
#elif defined(CONFIG_HAS_EARLYSUSPEND)
unregister_early_suspend(&ts->early_suspend);
#endif
#if NVT_TOUCH_MP
nvt_mp_proc_deinit();
#endif
#if NVT_TOUCH_EXT_PROC
nvt_extra_proc_deinit();
#endif
#if NVT_TOUCH_PROC
nvt_flash_proc_deinit();
#endif
#if NVT_TOUCH_ESD_PROTECT
if (nvt_esd_check_wq) {
cancel_delayed_work_sync(&nvt_esd_check_work);
nvt_esd_check_enable(false);
destroy_workqueue(nvt_esd_check_wq);
nvt_esd_check_wq = NULL;
}
#endif
#if BOOT_UPDATE_FIRMWARE
if (nvt_fwu_wq) {
cancel_delayed_work_sync(&ts->nvt_fwu_work);
destroy_workqueue(nvt_fwu_wq);
nvt_fwu_wq = NULL;
}
#endif
#if WAKEUP_GESTURE
device_init_wakeup(&ts->input_dev->dev, 0);
#endif
nvt_irq_enable(false);
free_irq(client->irq, ts);
mutex_destroy(&ts->xbuf_lock);
mutex_destroy(&ts->lock);
nvt_gpio_deconfig(ts);
if (ts->pen_support) {
if (ts->pen_input_dev) {
input_unregister_device(ts->pen_input_dev);
ts->pen_input_dev = NULL;
}
}
if (ts->input_dev) {
input_unregister_device(ts->input_dev);
ts->input_dev = NULL;
}
i2c_set_clientdata(client, NULL);
if (ts->xbuf) {
kfree(ts->xbuf);
ts->xbuf = NULL;
}
if (ts) {
kfree(ts);
ts = NULL;
}
return 0;
}
static void nvt_ts_shutdown(struct i2c_client *client)
{
NVT_LOG("Shutdown driver...\n");
nvt_irq_enable(false);
#if defined(CONFIG_FB)
#if defined(CONFIG_DRM_PANEL)
if (active_panel) {
if (drm_panel_notifier_unregister(active_panel, &ts->drm_panel_notif))
NVT_ERR("Error occurred while unregistering drm_panel_notifier.\n");
}
#elif defined(_MSM_DRM_NOTIFY_H_)
if (msm_drm_unregister_client(&ts->drm_notif))
NVT_ERR("Error occurred while unregistering drm_notifier.\n");
#else
if (fb_unregister_client(&ts->fb_notif))
NVT_ERR("Error occurred while unregistering fb_notifier.\n");
#endif
#elif defined(CONFIG_HAS_EARLYSUSPEND)
unregister_early_suspend(&ts->early_suspend);
#endif
#if NVT_TOUCH_MP
nvt_mp_proc_deinit();
#endif
#if NVT_TOUCH_EXT_PROC
nvt_extra_proc_deinit();
#endif
#if NVT_TOUCH_PROC
nvt_flash_proc_deinit();
#endif
#if NVT_TOUCH_ESD_PROTECT
if (nvt_esd_check_wq) {
cancel_delayed_work_sync(&nvt_esd_check_work);
nvt_esd_check_enable(false);
destroy_workqueue(nvt_esd_check_wq);
nvt_esd_check_wq = NULL;
}
#endif /* #if NVT_TOUCH_ESD_PROTECT */
#if BOOT_UPDATE_FIRMWARE
if (nvt_fwu_wq) {
cancel_delayed_work_sync(&ts->nvt_fwu_work);
destroy_workqueue(nvt_fwu_wq);
nvt_fwu_wq = NULL;
}
#endif
#if WAKEUP_GESTURE
device_init_wakeup(&ts->input_dev->dev, 0);
#endif
}
/*******************************************************
Description:
Novatek touchscreen driver suspend function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static int32_t nvt_ts_suspend(struct device *dev)
{
uint8_t buf[4] = {0};
#if MT_PROTOCOL_B
uint32_t i = 0;
#endif
if (!bTouchIsAwake) {
NVT_LOG("Touch is already suspend\n");
return 0;
}
#if !WAKEUP_GESTURE
nvt_irq_enable(false);
#endif
#if NVT_TOUCH_ESD_PROTECT
NVT_LOG("cancel delayed work sync\n");
cancel_delayed_work_sync(&nvt_esd_check_work);
nvt_esd_check_enable(false);
#endif /* #if NVT_TOUCH_ESD_PROTECT */
mutex_lock(&ts->lock);
NVT_LOG("start\n");
bTouchIsAwake = 0;
#if WAKEUP_GESTURE
//---write command to enter "wakeup gesture mode"---
buf[0] = EVENT_MAP_HOST_CMD;
buf[1] = 0x13;
CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 2);
enable_irq_wake(ts->client->irq);
NVT_LOG("Enabled touch wakeup gesture\n");
#else // WAKEUP_GESTURE
//---write command to enter "deep sleep mode"---
buf[0] = EVENT_MAP_HOST_CMD;
buf[1] = 0x11;
CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 2);
#endif // WAKEUP_GESTURE
mutex_unlock(&ts->lock);
/* release all touches */
#if MT_PROTOCOL_B
for (i = 0; i < ts->max_touch_num; i++) {
input_mt_slot(ts->input_dev, i);
input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0);
input_report_abs(ts->input_dev, ABS_MT_PRESSURE, 0);
input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, 0);
}
#endif
input_report_key(ts->input_dev, BTN_TOUCH, 0);
#if !MT_PROTOCOL_B
input_mt_sync(ts->input_dev);
#endif
input_sync(ts->input_dev);
/* release pen event */
if (ts->pen_support) {
input_report_abs(ts->pen_input_dev, ABS_X, 0);
input_report_abs(ts->pen_input_dev, ABS_Y, 0);
input_report_abs(ts->pen_input_dev, ABS_PRESSURE, 0);
input_report_abs(ts->pen_input_dev, ABS_TILT_X, 0);
input_report_abs(ts->pen_input_dev, ABS_TILT_Y, 0);
input_report_abs(ts->pen_input_dev, ABS_DISTANCE, 0);
input_report_key(ts->pen_input_dev, BTN_TOUCH, 0);
input_report_key(ts->pen_input_dev, BTN_TOOL_PEN, 0);
input_report_key(ts->pen_input_dev, BTN_STYLUS, 0);
input_report_key(ts->pen_input_dev, BTN_STYLUS2, 0);
input_sync(ts->pen_input_dev);
}
msleep(50);
NVT_LOG("end\n");
return 0;
}
/*******************************************************
Description:
Novatek touchscreen driver resume function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static int32_t nvt_ts_resume(struct device *dev)
{
if (bTouchIsAwake) {
NVT_LOG("Touch is already resume\n");
return 0;
}
mutex_lock(&ts->lock);
NVT_LOG("start\n");
// please make sure display reset(RESX) sequence and mipi dsi cmds sent before this
#if NVT_TOUCH_SUPPORT_HW_RST
gpio_set_value(ts->reset_gpio, 1);
#endif
// need to uncomment the following code for NT36672, NT36772 IC due to no boot-load when RESX/TP_RESX
//nvt_bootloader_reset();
if (nvt_check_fw_reset_state(RESET_STATE_REK)) {
NVT_ERR("FW is not ready! Try to bootloader reset...\n");
nvt_bootloader_reset();
nvt_check_fw_reset_state(RESET_STATE_REK);
}
#if !WAKEUP_GESTURE
nvt_irq_enable(true);
#endif
#if NVT_TOUCH_ESD_PROTECT
nvt_esd_check_enable(false);
queue_delayed_work(nvt_esd_check_wq, &nvt_esd_check_work,
msecs_to_jiffies(NVT_TOUCH_ESD_CHECK_PERIOD));
#endif /* #if NVT_TOUCH_ESD_PROTECT */
bTouchIsAwake = 1;
mutex_unlock(&ts->lock);
NVT_LOG("end\n");
return 0;
}
#if defined(CONFIG_FB)
#if defined(CONFIG_DRM_PANEL)
static int nvt_drm_panel_notifier_callback(struct notifier_block *self, unsigned long event, void *data)
{
struct drm_panel_notifier *evdata = data;
int *blank;
struct nvt_ts_data *ts =
container_of(self, struct nvt_ts_data, drm_panel_notif);
if (!evdata)
return 0;
if (!(event == DRM_PANEL_EARLY_EVENT_BLANK ||
event == DRM_PANEL_EVENT_BLANK)) {
//NVT_LOG("event(%lu) not need to process\n", event);
return 0;
}
if (evdata->data && ts) {
blank = evdata->data;
if (event == DRM_PANEL_EARLY_EVENT_BLANK) {
if (*blank == DRM_PANEL_BLANK_POWERDOWN) {
NVT_LOG("event=%lu, *blank=%d\n", event, *blank);
nvt_ts_suspend(&ts->client->dev);
}
} else if (event == DRM_PANEL_EVENT_BLANK) {
if (*blank == DRM_PANEL_BLANK_UNBLANK) {
NVT_LOG("event=%lu, *blank=%d\n", event, *blank);
nvt_ts_resume(&ts->client->dev);
}
}
}
return 0;
}
#elif defined(_MSM_DRM_NOTIFY_H_)
static int nvt_drm_notifier_callback(struct notifier_block *self, unsigned long event, void *data)
{
struct msm_drm_notifier *evdata = data;
int *blank;
struct nvt_ts_data *ts =
container_of(self, struct nvt_ts_data, drm_notif);
if (!evdata || (evdata->id != 0))
return 0;
if (evdata->data && ts) {
blank = evdata->data;
if (event == MSM_DRM_EARLY_EVENT_BLANK) {
if (*blank == MSM_DRM_BLANK_POWERDOWN) {
NVT_LOG("event=%lu, *blank=%d\n", event, *blank);
nvt_ts_suspend(&ts->client->dev);
}
} else if (event == MSM_DRM_EVENT_BLANK) {
if (*blank == MSM_DRM_BLANK_UNBLANK) {
NVT_LOG("event=%lu, *blank=%d\n", event, *blank);
nvt_ts_resume(&ts->client->dev);
}
}
}
return 0;
}
#else
static int nvt_fb_notifier_callback(struct notifier_block *self, unsigned long event, void *data)
{
struct fb_event *evdata = data;
int *blank;
struct nvt_ts_data *ts =
container_of(self, struct nvt_ts_data, fb_notif);
if (evdata && evdata->data && event == FB_EARLY_EVENT_BLANK) {
blank = evdata->data;
if (*blank == FB_BLANK_POWERDOWN) {
NVT_LOG("event=%lu, *blank=%d\n", event, *blank);
nvt_ts_suspend(&ts->client->dev);
}
} else if (evdata && evdata->data && event == FB_EVENT_BLANK) {
blank = evdata->data;
if (*blank == FB_BLANK_UNBLANK) {
NVT_LOG("event=%lu, *blank=%d\n", event, *blank);
nvt_ts_resume(&ts->client->dev);
}
}
return 0;
}
#endif
#elif defined(CONFIG_HAS_EARLYSUSPEND)
/*******************************************************
Description:
Novatek touchscreen driver early suspend function.
return:
n.a.
*******************************************************/
static void nvt_ts_early_suspend(struct early_suspend *h)
{
nvt_ts_suspend(ts->client, PMSG_SUSPEND);
}
/*******************************************************
Description:
Novatek touchscreen driver late resume function.
return:
n.a.
*******************************************************/
static void nvt_ts_late_resume(struct early_suspend *h)
{
nvt_ts_resume(ts->client);
}
#endif
static const struct i2c_device_id nvt_ts_id[] = {
{ NVT_I2C_NAME, 0 },
{ }
};
#ifdef CONFIG_OF
static struct of_device_id nvt_match_table[] = {
{ .compatible = "novatek,NVT-ts",},
{ },
};
#endif
static struct i2c_driver nvt_i2c_driver = {
.probe = nvt_ts_probe,
.remove = nvt_ts_remove,
.shutdown = nvt_ts_shutdown,
.id_table = nvt_ts_id,
.driver = {
.name = NVT_I2C_NAME,
.owner = THIS_MODULE,
#ifdef CONFIG_OF
.of_match_table = nvt_match_table,
#endif
},
};
/*******************************************************
Description:
Driver Install function.
return:
Executive Outcomes. 0---succeed. not 0---failed.
********************************************************/
static int32_t __init nvt_driver_init(void)
{
int32_t ret = 0;
NVT_LOG("start\n");
//---add i2c driver---
ret = i2c_add_driver(&nvt_i2c_driver);
if (ret) {
NVT_ERR("failed to add i2c driver");
goto err_driver;
}
NVT_LOG("finished\n");
err_driver:
return ret;
}
/*******************************************************
Description:
Driver uninstall function.
return:
n.a.
********************************************************/
static void __exit nvt_driver_exit(void)
{
i2c_del_driver(&nvt_i2c_driver);
}
#if defined(CONFIG_DRM_PANEL)
late_initcall(nvt_driver_init);
#else
module_init(nvt_driver_init);
#endif
module_exit(nvt_driver_exit);
MODULE_DESCRIPTION("Novatek Touchscreen Driver");
MODULE_LICENSE("GPL");
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 4, 0)
MODULE_IMPORT_NS(VFS_internal_I_am_really_a_filesystem_and_am_NOT_a_driver);
#endif
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