samsung-sm8650/android_kernel_samsung_sm8650-modules
1
0
Форк 0
Код Задачі Запити на злиття Дії Пакети Проєкти Релізи Вікі Активність
Файли
d7d7c480b8d56f5428178781238d538f4edf5fdc
android_kernel_samsung_sm86…/qcom/opensource/touch-drivers/nt36xxx/nt36xxx.c
David Wronek e44c5532de Add 'qcom/opensource/touch-drivers/' from commit '0abb70a15bd5d3469505bb0249d49266a4a5595e' 
git-subtree-dir: qcom/opensource/touch-drivers
git-subtree-mainline: 51ff30338b
git-subtree-split: 0abb70a15b
Change-Id:
repo: https://git.codelinaro.org/clo/la/platform/vendor/opensource/touch-drivers
tag: LA.VENDOR.14.3.0.r1-17300-lanai.QSSI15.0
2024-10-06 16:45:39 +02:00

4609 рядки
112 KiB
C
Неформатований Анотація Історія

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2010 - 2018 Novatek, Inc.
*
* $Revision: 47247 $
* $Date: 2019-07-10 10:41:36 +0800 (Wed, 10 Jul 2019) $
*
* 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.
*
*/
#if !defined(NVT_NT36XXX_SPI) /* NT36XXX I2C */
#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_DRM)
#include <linux/soc/qcom/panel_event_notifier.h>
#endif
#if defined(CONFIG_DRM_PANEL)
#include <drm/drm_panel.h>
#elif defined(CONFIG_FB)
#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_DRM)
static struct drm_panel *active_panel;
static void nvt_i2c_panel_notifier_callback(enum panel_event_notifier_tag tag,
struct panel_event_notification *notification, void *client_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
#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;
#if defined(CONFIG_DRM)
static void nvt_i2c_register_for_panel_events(struct device_node *dp,
struct nvt_ts_data *ts)
{
void *cookie = NULL;
cookie = panel_event_notifier_register(PANEL_EVENT_NOTIFICATION_PRIMARY,
PANEL_EVENT_NOTIFIER_CLIENT_PRIMARY_TOUCH, active_panel,
&nvt_i2c_panel_notifier_callback, ts);
if (!cookie) {
pr_err("Failed to register for panel events\n");
return;
}
ts->notifier_cookie = cookie;
}
#endif
/*******************************************************
* 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;
}
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;
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 novatek project id information
* function.
*
* return:
* Executive outcomes. 0---success. -1---fail.
*******************************************************/
int32_t nvt_read_pid(void)
{
uint8_t buf[3] = {0};
//---set xdata index to EVENT BUF ADDR---
nvt_set_page(I2C_FW_Address, ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_PROJECTID);
//---read project id---
buf[0] = EVENT_MAP_PROJECTID;
buf[1] = 0x00;
buf[2] = 0x00;
CTP_I2C_READ(ts->client, I2C_FW_Address, buf, 3);
ts->nvt_pid = (buf[2] << 8) + buf[1];
NVT_LOG("PID=%04X\n", ts->nvt_pid);
return 0;
}
/*******************************************************
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, 17);
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];
//---clear x_num, y_num if fw info is broken---
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]);
ts->fw_ver = 0;
ts->x_num = 18;
ts->y_num = 32;
ts->abs_x_max = TOUCH_DEFAULT_MAX_WIDTH;
ts->abs_y_max = TOUCH_DEFAULT_MAX_HEIGHT;
ts->max_button_num = TOUCH_KEY_NUM;
if(retry_count < 3) {
retry_count++;
NVT_ERR("retry_count=%d\n", retry_count);
goto info_retry;
} else {
NVT_ERR("Set default fw_ver=%d, x_num=%d, y_num=%d, "
"abs_x_max=%d, abs_y_max=%d, max_button_num=%d!\n",
ts->fw_ver, ts->x_num, ts->y_num,
ts->abs_x_max, ts->abs_y_max, ts->max_button_num);
ret = -1;
}
} else {
ret = 0;
}
//---Get Novatek PID---
nvt_read_pid();
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;
kfree(dev);
return 0;
}
static const struct proc_ops nvt_flash_fops = {
.proc_open = nvt_flash_open,
.proc_release = nvt_flash_close,
.proc_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);
}
#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 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 + 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;
#if WAKEUP_GESTURE
if (bTouchIsAwake == 0) {
pm_wakeup_event(&ts->input_dev->dev, 5000);
}
#endif
mutex_lock(&ts->lock);
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;
}
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);
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, 0x1F64E);
//---read to check if buf is 0xFC which means IC is in CRC reboot ---
buf[0] = 0x4E;
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!\n");
}
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;
ts->carrier_system = trim_id_table[list].hwinfo->carrier_system;
ret = 0;
goto out;
} else {
ts->mmap = NULL;
ret = -1;
}
}
msleep(10);
}
out:
return ret;
}
#if defined(CONFIG_DRM)
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;
NVT_LOG(" %s:find\n", __func__);
return 0;
}
}
NVT_ERR(" %s: not find\n", __func__);
return -ENODEV;
}
static int nvt_ts_check_default_tp(struct device_node *dt, const char *prop)
{
const char **active_tp = NULL;
int count, tmp, score = 0;
const char *active;
int ret, i;
count = of_property_count_strings(dt->parent, prop);
if (count <= 0 || count > 3)
return -ENODEV;
active_tp = kcalloc(count, sizeof(char *), GFP_KERNEL);
if (!active_tp) {
NVT_ERR("FTS alloc failed\n");
return -ENOMEM;
}
ret = of_property_read_string_array(dt->parent, prop,
active_tp, count);
if (ret < 0) {
NVT_ERR("fail to read %s %d\n", prop, ret);
ret = -ENODEV;
goto out;
}
for (i = 0; i < count; i++) {
active = active_tp[i];
if (active != NULL) {
tmp = of_device_is_compatible(dt, active);
if (tmp > 0)
score++;
}
}
if (score <= 0) {
NVT_ERR("not match this driver\n");
ret = -ENODEV;
goto out;
}
ret = 0;
out:
kfree(active_tp);
return ret;
}
#endif
/*******************************************************
* Description:
* Novatek touchscreen driver probe function.
*
* return:
* Executive outcomes. 0---succeed. negative---failed
*******************************************************/
static int32_t nvt_ts_late_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int32_t ret = 0;
#if ((TOUCH_KEY_NUM > 0) || WAKEUP_GESTURE)
int32_t retry = 0;
#endif
//---request and config GPIOs---
ret = nvt_gpio_config(ts);
if (ret) {
NVT_ERR("gpio config error!\n");
goto err_gpio_config_failed;
}
//---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 < ARRAY_SIZE(gesture_key_array); retry++) {
input_set_capability(ts->input_dev, EV_KEY, gesture_key_array[retry]);
}
#endif
snprintf(ts->phys, sizeof(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;
}
//---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
bTouchIsAwake = 1;
NVT_LOG("end\n");
nvt_irq_enable(true);
return 0;
#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:
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:
nvt_gpio_deconfig(ts);
err_gpio_config_failed:
NVT_ERR("ret = %d\n", ret);
return ret;
}
/*******************************************************
* 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)
struct device_node *dp = client->dev.of_node;
#endif
NVT_LOG("start\n");
#if defined(CONFIG_DRM)
if (nvt_ts_check_dt(dp)) {
if (!nvt_ts_check_default_tp(dp, "qcom,i2c-touch-active"))
ret = -EPROBE_DEFER;
else
ret = -ENODEV;
return ret;
}
#endif
ts = devm_kzalloc(&client->dev, sizeof(struct nvt_ts_data), GFP_KERNEL);
if (ts == NULL) {
NVT_ERR("failed to allocated memory for nvt ts data\n");
return -ENOMEM;
}
ts->client = client;
i2c_set_clientdata(client, ts);
//---parse dts---
nvt_parse_dt(&client->dev);
//---check i2c func.---
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
NVT_ERR("i2c_check_functionality failed. (no I2C_FUNC_I2C)\n");
return -ENODEV;
}
mutex_init(&ts->lock);
mutex_init(&ts->xbuf_lock);
ts->id = id;
#if defined(CONFIG_DRM)
nvt_i2c_register_for_panel_events(client->dev.of_node, ts);
#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;
ts->fb_notif.notifier_call = nvt_fb_notifier_callback;
if (ret) {
NVT_ERR("register fb_notifier failed. ret=%d\n", ret);
goto err_register_fb_notif_failed;
}
#endif
NVT_LOG("end\n");
return 0;
#if defined(CONFIG_DRM)
#elif defined(_MSM_DRM_NOTIFY_H_)
err_register_drm_notif_failed:
#else
err_register_fb_notif_failed:
#endif
return -ENODEV;
}
/*******************************************************
* Description:
* Novatek touchscreen driver release function.
*
* return:
* Executive outcomes. 0---succeed.
*******************************************************/
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0))
static void nvt_ts_remove(struct i2c_client *client)
#else
static int32_t nvt_ts_remove(struct i2c_client *client)
#endif
{
NVT_LOG("Removing driver...\n");
#if defined(CONFIG_DRM)
if (active_panel && ts->notifier_cookie)
panel_event_notifier_unregister(ts->notifier_cookie);
#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
#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
if (ts->input_dev)
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->input_dev) {
input_unregister_device(ts->input_dev);
ts->input_dev = NULL;
}
i2c_set_clientdata(client, NULL);
if (ts) {
kfree(ts);
ts = NULL;
}
#if (LINUX_VERSION_CODE < KERNEL_VERSION(6, 1, 0))
return 0;
#endif
}
static void nvt_ts_shutdown(struct i2c_client *client)
{
NVT_LOG("Shutdown driver...\n");
nvt_irq_enable(false);
#if defined(CONFIG_DRM)
if (active_panel && ts->notifier_cookie)
panel_event_notifier_unregister(ts->notifier_cookie);
#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
#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
if (ts->input_dev)
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);
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)
{
NVT_LOG("start\n");
if (bTouchIsAwake || ts->fw_ver == 0) {
nvt_ts_late_probe(ts->client, ts->id);
NVT_LOG("nvt_ts_late_probe\n");
return 0;
}
mutex_lock(&ts->lock);
// make sure display reset(RESX) sequence and dsi cmds sent before this
#if NVT_TOUCH_SUPPORT_HW_RST
gpio_set_value(ts->reset_gpio, 1);
#endif
// 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_DRM)
static void nvt_i2c_panel_notifier_callback(enum panel_event_notifier_tag tag,
struct panel_event_notification *notification, void *client_data)
{
struct nvt_ts_data *ts = client_data;
if (!notification) {
pr_err("Invalid notification\n");
return;
}
NVT_LOG("Notification type:%d, early_trigger:%d",
notification->notif_type,
notification->notif_data.early_trigger);
switch (notification->notif_type) {
case DRM_PANEL_EVENT_UNBLANK:
if (notification->notif_data.early_trigger)
NVT_LOG("resume notification pre commit\n");
else
nvt_ts_resume(&ts->client->dev);
break;
case DRM_PANEL_EVENT_BLANK:
if (notification->notif_data.early_trigger)
nvt_ts_suspend(&ts->client->dev);
else
NVT_LOG("suspend notification post commit\n");
break;
case DRM_PANEL_EVENT_BLANK_LP:
NVT_LOG("received lp event\n");
break;
case DRM_PANEL_EVENT_FPS_CHANGE:
NVT_LOG("Received fps change old fps:%d new fps:%d\n",
notification->notif_data.old_fps,
notification->notif_data.new_fps);
break;
default:
NVT_LOG("notification serviced :%d\n",
notification->notif_type);
break;
}
}
#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
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,
#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);
}
//late_initcall(nvt_driver_init);
module_init(nvt_driver_init);
module_exit(nvt_driver_exit);
MODULE_DESCRIPTION("Novatek Touchscreen Driver");
MODULE_LICENSE("GPL v2");
#else /* NT36XXX_SPI */
#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>
#if defined(CONFIG_DRM)
#include <linux/soc/qcom/panel_event_notifier.h>
#endif
#include "nt36xxx.h"
#if NVT_SPI_TOUCH_ESD_PROTECT
#include <linux/jiffies.h>
#endif /* #if NVT_SPI_TOUCH_ESD_PROTECT */
#if NVT_SPI_TOUCH_ESD_PROTECT
static struct delayed_work nvt_spi_esd_check_work;
static struct workqueue_struct *nvt_spi_esd_check_wq;
static unsigned long nvt_spi_irq_timer;
uint8_t nvt_spi_esd_check;
uint8_t nvt_spi_esd_retry;
#endif /* #if NVT_SPI_TOUCH_ESD_PROTECT */
struct nvt_spi_data_t *nvt_spi_data;
#if NVT_SPI_BOOT_UPDATE_FIRMWARE
static struct workqueue_struct *nvt_spi_fwu_wq;
#endif
#if defined(CONFIG_DRM)
static struct drm_panel *active_spi_panel;
static void nvt_spi_panel_notifier_callback(enum panel_event_notifier_tag tag,
struct panel_event_notification *event, void *client_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
static uint32_t NVT_SPI_ENG_RST_ADDR = 0x7FFF80;
uint32_t NVT_SPI_SWRST_N8_ADDR; //read from dtsi
uint32_t NVT_SPI_RD_FAST_ADDR; //read from dtsi
#if NVT_SPI_TOUCH_KEY_NUM > 0
const uint16_t nvt_spi_touch_key_array[NVT_SPI_TOUCH_KEY_NUM] = {
KEY_BACK,
KEY_HOME,
KEY_MENU
};
#endif
#if NVT_SPI_WAKEUP_GESTURE
const uint16_t nvt_spi_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;
#if defined(CONFIG_DRM)
static void nvt_spi_register_for_panel_events(struct device_node *dp,
struct nvt_spi_data_t *ts)
{
void *cookie = NULL;
cookie = panel_event_notifier_register(PANEL_EVENT_NOTIFICATION_PRIMARY,
PANEL_EVENT_NOTIFIER_CLIENT_PRIMARY_TOUCH, active_spi_panel,
&nvt_spi_panel_notifier_callback, ts);
if (!cookie) {
pr_err("Failed to register for panel events\n");
return;
}
ts->notifier_cookie = cookie;
}
#endif
/*
*******************************************************
* Description:
* Novatek touchscreen irq enable/disable function.
*
* return:
* n.a.
******************************************************
*/
static void nvt_spi_irq_enable(bool enable)
{
struct irq_desc *desc;
struct nvt_spi_data_t *ts = nvt_spi_data;
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 spi read/write core function.
*
* return:
* Executive outcomes. 0---succeed.
******************************************************
*/
static inline int32_t nvt_spi_read_write(
struct spi_device *client, uint8_t *buf, size_t len, enum NVT_SPI_RW rw)
{
struct spi_message m;
struct spi_transfer t = {
.len = len,
};
struct nvt_spi_data_t *ts = nvt_spi_data;
memset(ts->xbuf, 0, len + NVT_SPI_DUMMY_BYTES);
memcpy(ts->xbuf, buf, len);
switch (rw) {
case NVT_SPI_READ:
t.tx_buf = ts->xbuf;
t.rx_buf = ts->rbuf;
t.len = (len + NVT_SPI_DUMMY_BYTES);
break;
case NVT_SPI_WRITE:
t.tx_buf = ts->xbuf;
break;
}
spi_message_init(&m);
spi_message_add_tail(&t, &m);
return spi_sync(client, &m);
}
/*
******************************************************
* Description:
* Novatek touchscreen spi read function.
*
* return:
* Executive outcomes. 2---succeed. -5---I/O error
******************************************************
*/
int32_t nvt_spi_read(uint8_t *buf, uint16_t len)
{
int32_t ret = -1;
int32_t retries = 0;
struct nvt_spi_data_t *ts = nvt_spi_data;
mutex_lock(&ts->xbuf_lock);
buf[0] = NVT_SPI_READ_MASK(buf[0]);
while (retries < 5) {
ret = nvt_spi_read_write(ts->client, buf, len, NVT_SPI_READ);
if (ret == 0)
break;
retries++;
}
if (unlikely(retries == 5)) {
NVT_ERR("read error, ret=%d\n", ret);
ret = -EIO;
} else
memcpy((buf+1), (ts->rbuf+2), (len-1));
mutex_unlock(&ts->xbuf_lock);
return ret;
}
/*
******************************************************
* Description:
* Novatek touchscreen spi write function.
*
* return:
* Executive outcomes. 1---succeed. -5---I/O error
******************************************************
*/
int32_t nvt_spi_write(uint8_t *buf, uint16_t len)
{
int32_t ret = -1;
int32_t retries = 0;
struct nvt_spi_data_t *ts = nvt_spi_data;
mutex_lock(&ts->xbuf_lock);
buf[0] = NVT_SPI_WRITE_MASK(buf[0]);
while (retries < 5) {
ret = nvt_spi_read_write(ts->client, buf, len, NVT_SPI_WRITE);
if (ret == 0)
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_spi_set_page(uint32_t addr)
{
uint8_t buf[4] = {0};
buf[0] = 0xFF; //set index/page/addr command
buf[1] = (addr >> 15) & 0xFF;
buf[2] = (addr >> 7) & 0xFF;
return nvt_spi_write(buf, 3);
}
/*
*******************************************************
* Description:
* Novatek touchscreen write data to specify address.
*
* return:
* Executive outcomes. 0---succeed. -5---access fail.
*******************************************************
*/
int32_t nvt_spi_write_addr(uint32_t addr, uint8_t data)
{
int32_t ret = 0;
uint8_t buf[4] = {0};
//---set xdata index---
buf[0] = 0xFF; //set index/page/addr command
buf[1] = (addr >> 15) & 0xFF;
buf[2] = (addr >> 7) & 0xFF;
ret = nvt_spi_write(buf, 3);
if (ret) {
NVT_ERR("set page 0x%06X failed, ret = %d\n", addr, ret);
return ret;
}
//---write data to index---
buf[0] = addr & (0x7F);
buf[1] = data;
ret = nvt_spi_write(buf, 2);
if (ret) {
NVT_ERR("write data to 0x%06X failed, ret = %d\n", addr, ret);
return ret;
}
return ret;
}
/*
*******************************************************
* Description:
* Novatek touchscreen enable hw bld crc function.
*
* return:
* N/A.
******************************************************
*/
void nvt_spi_bld_crc_enable(void)
{
uint8_t buf[4] = {0};
struct nvt_spi_data_t *ts = nvt_spi_data;
//---set xdata index to BLD_CRC_EN_ADDR---
nvt_spi_set_page(ts->mmap->BLD_CRC_EN_ADDR);
//---read data from index---
buf[0] = ts->mmap->BLD_CRC_EN_ADDR & (0x7F);
buf[1] = 0xFF;
nvt_spi_read(buf, 2);
//---write data to index---
buf[0] = ts->mmap->BLD_CRC_EN_ADDR & (0x7F);
buf[1] = buf[1] | (0x01 << 7);
nvt_spi_write(buf, 2);
}
/*
*******************************************************
* Description:
* Novatek touchscreen clear status & enable fw crc function.
*
* return:
* N/A.
******************************************************
*/
void nvt_spi_fw_crc_enable(void)
{
uint8_t buf[4] = {0};
struct nvt_spi_data_t *ts = nvt_spi_data;
//---set xdata index to EVENT BUF ADDR---
nvt_spi_set_page(ts->mmap->EVENT_BUF_ADDR);
//---clear fw reset status---
buf[0] = NVT_SPI_EVENT_MAP_RESET_COMPLETE & (0x7F);
buf[1] = 0x00;
nvt_spi_write(buf, 2);
//---enable fw crc---
buf[0] = NVT_SPI_EVENT_MAP_HOST_CMD & (0x7F);
buf[1] = 0xAE; //enable fw crc command
nvt_spi_write(buf, 2);
}
/*
*******************************************************
* Description:
* Novatek touchscreen set boot ready function.
*
* return:
* N/A.
******************************************************
*/
void nvt_spi_boot_ready(void)
{
struct nvt_spi_data_t *ts = nvt_spi_data;
//---write BOOT_RDY status cmds---
nvt_spi_write_addr(ts->mmap->BOOT_RDY_ADDR, 1);
mdelay(5);
if (!ts->hw_crc) {
//---write BOOT_RDY status cmds---
nvt_spi_write_addr(ts->mmap->BOOT_RDY_ADDR, 0);
//---write POR_CD cmds---
nvt_spi_write_addr(ts->mmap->POR_CD_ADDR, 0xA0);
}
}
/*
******************************************************
* Description:
* Novatek touchscreen enable auto copy mode function.
*
* return:
* N/A.
******************************************************
*/
void nvt_spi_tx_auto_copy_mode(void)
{
struct nvt_spi_data_t *ts = nvt_spi_data;
//---write TX_AUTO_COPY_EN cmds---
nvt_spi_write_addr(ts->mmap->TX_AUTO_COPY_EN, 0x69);
NVT_ERR("tx auto copy mode enable\n");
}
/*
******************************************************
* Description:
* Novatek touchscreen check spi dma tx info function.
*
* return:
* N/A.
******************************************************
*/
int32_t nvt_spi_check_spi_dma_tx_info(void)
{
uint8_t buf[8] = {0};
int32_t i = 0;
const int32_t retry = 200;
struct nvt_spi_data_t *ts = nvt_spi_data;
for (i = 0; i < retry; i++) {
//---set xdata index to EVENT BUF ADDR---
nvt_spi_set_page(ts->mmap->SPI_DMA_TX_INFO);
//---read fw status---
buf[0] = ts->mmap->SPI_DMA_TX_INFO & 0x7F;
buf[1] = 0xFF;
nvt_spi_read(buf, 2);
if (buf[1] == 0x00)
break;
usleep_range(1000, 1100);
}
if (i >= retry) {
NVT_ERR("failed, i=%d, buf[1]=0x%02X\n", i, buf[1]);
return -EIO;
}
return 0;
}
/*
******************************************************
* Description:
* Novatek touchscreen eng reset cmd function.
*
* return:
* n.a.
******************************************************
*/
void nvt_spi_eng_reset(void)
{
//---eng reset cmds to ENG_RST_ADDR---
nvt_spi_write_addr(NVT_SPI_ENG_RST_ADDR, 0x5A);
mdelay(1); //wait tMCU_Idle2TP_REX_Hi after TP_RST
}
/*
*******************************************************
* Description:
* Novatek touchscreen reset MCU function.
*
* return:
* n.a.
******************************************************
*/
void nvt_spi_sw_reset(void)
{
//---software reset cmds to SWRST_N8_ADDR---
nvt_spi_write_addr(NVT_SPI_SWRST_N8_ADDR, 0x55);
msleep(20);
}
/*
*******************************************************
* Description:
* Novatek touchscreen reset MCU then into idle mode
* function.
*
* return:
* n.a.
******************************************************
*/
void nvt_spi_sw_reset_idle(void)
{
//---MCU idle cmds to SWRST_N8_ADDR---
nvt_spi_write_addr(NVT_SPI_SWRST_N8_ADDR, 0xAA);
msleep(20);
}
/*
******************************************************
* Description:
* Novatek touchscreen reset MCU (boot) function.
*
* return:
* n.a.
******************************************************
*/
void nvt_spi_bootloader_reset(void)
{
//---reset cmds to SWRST_N8_ADDR---
nvt_spi_write_addr(NVT_SPI_SWRST_N8_ADDR, 0x69);
mdelay(5); //wait tBRST2FR after Bootload RST
if (NVT_SPI_RD_FAST_ADDR) {
/* disable SPI_RD_FAST */
nvt_spi_write_addr(NVT_SPI_RD_FAST_ADDR, 0x00);
}
NVT_LOG("end\n");
}
/*
*******************************************************
* Description:
* Novatek touchscreen clear FW status function.
*
* return:
* Executive outcomes. 0---succeed. -1---fail.
******************************************************
*/
int32_t nvt_spi_clear_fw_status(void)
{
uint32_t addr;
uint8_t buf[8] = {0};
int32_t i = 0;
const int32_t retry = 20;
struct nvt_spi_data_t *ts = nvt_spi_data;
for (i = 0; i < retry; i++) {
//---set xdata index to EVENT BUF ADDR---
addr = ts->mmap->EVENT_BUF_ADDR;
nvt_spi_set_page(addr | NVT_SPI_EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE);
//---clear fw status---
buf[0] = NVT_SPI_EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE;
buf[1] = 0x00;
nvt_spi_write(buf, 2);
//---read fw status---
buf[0] = NVT_SPI_EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE;
buf[1] = 0xFF;
nvt_spi_read(buf, 2);
if (buf[1] == 0x00)
break;
usleep_range(10000, 11000);
}
if (i >= retry) {
NVT_ERR("failed, i=%d, buf[1]=0x%02X\n", i, buf[1]);
return -EIO;
}
return 0;
}
/*
******************************************************
* Description:
* Novatek touchscreen check FW status function.
* return:
* Executive outcomes. 0---succeed. -1---failed.
******************************************************
*/
int32_t nvt_spi_check_fw_status(void)
{
uint32_t addr;
uint8_t buf[8] = {0};
int32_t i = 0;
const int32_t retry = 50;
struct nvt_spi_data_t *ts = nvt_spi_data;
usleep_range(20000, 21000);
for (i = 0; i < retry; i++) {
//---set xdata index to EVENT BUF ADDR---
addr = ts->mmap->EVENT_BUF_ADDR;
nvt_spi_set_page(addr | NVT_SPI_EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE);
//---read fw status---
buf[0] = NVT_SPI_EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE;
buf[1] = 0x00;
nvt_spi_read(buf, 2);
if ((buf[1] & 0xF0) == 0xA0)
break;
usleep_range(10000, 11000);
}
if (i >= retry) {
NVT_ERR("failed, i=%d, buf[1]=0x%02X\n", i, buf[1]);
return -EIO;
}
return 0;
}
/*
******************************************************
* Description:
* Novatek touchscreen check FW reset state function.
*
* return:
* Executive outcomes. 0---succeed. -1---failed.
******************************************************
*/
int32_t nvt_spi_check_fw_reset_state(enum NVT_SPI_RST_COMPLETE_STATE check_reset_state)
{
uint8_t buf[8] = {0};
int32_t ret = 0;
int32_t retry = 0;
int32_t retry_max = (check_reset_state == NVT_SPI_RESET_STATE_INIT) ? 10 : 50;
struct nvt_spi_data_t *ts = nvt_spi_data;
//---set xdata index to EVENT BUF ADDR---
nvt_spi_set_page(ts->mmap->EVENT_BUF_ADDR | NVT_SPI_EVENT_MAP_RESET_COMPLETE);
while (1) {
//---read reset state---
buf[0] = NVT_SPI_EVENT_MAP_RESET_COMPLETE;
buf[1] = 0x00;
nvt_spi_read(buf, 6);
if ((buf[1] >= check_reset_state) && (buf[1] <= NVT_SPI_RESET_STATE_MAX)) {
ret = 0;
break;
}
retry++;
if (unlikely(retry > retry_max)) {
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;
}
usleep_range(10000, 11000);
}
return ret;
}
/*
*******************************************************
* Description:
* Novatek touchscreen get firmware related information
* function.
*
* return:
* Executive outcomes. 0---success. -1---fail.
******************************************************
*/
int32_t nvt_spi_get_fw_info(void)
{
uint8_t buf[64] = {0};
uint32_t retry_count = 0;
int32_t ret = 0;
struct nvt_spi_data_t *ts = nvt_spi_data;
info_retry:
//---set xdata index to EVENT BUF ADDR---
nvt_spi_set_page(ts->mmap->EVENT_BUF_ADDR | NVT_SPI_EVENT_MAP_FWINFO);
//---read fw info---
buf[0] = NVT_SPI_EVENT_MAP_FWINFO;
nvt_spi_read(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 = NVT_SPI_TOUCH_DEFAULT_MAX_WIDTH;
ts->abs_y_max = NVT_SPI_TOUCH_DEFAULT_MAX_HEIGHT;
ts->max_button_num = NVT_SPI_TOUCH_KEY_NUM;
NVT_ERR("Set default fw_ver=%d, abs_x_max=%d, ",
ts->fw_ver, ts->abs_x_max);
NVT_ERR("abs_y_max=%d, max_button_num=%d!\n",
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_ERR("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_SPI_TOUCH_PROC
static struct proc_dir_entry *nvt_spi_proc_entry;
#define DEVICE_NAME "NVTSPI"
/*
******************************************************
* Description:
* Novatek touchscreen /proc/NVTSPI read function.
*
* return:
* Executive outcomes. 2---succeed. -5,-14---failed.
******************************************************
*/
static ssize_t nvt_spi_flash_read(
struct file *file, char __user *buff, size_t count, loff_t *offp)
{
uint8_t *str = NULL;
int32_t ret = 0;
int32_t retries = 0;
int8_t spi_wr = 0;
uint8_t *buf;
if ((count > NVT_SPI_TRANSFER_LEN + 3) || (count < 3)) {
NVT_ERR("invalid transfer len!\n");
return -EFAULT;
}
/* allocate buffer for spi transfer */
str = kzalloc((count), GFP_KERNEL);
if (str == NULL) {
NVT_ERR("kzalloc for buf failed!\n");
ret = -ENOMEM;
goto kzalloc_failed;
}
buf = kzalloc((count), GFP_KERNEL | GFP_DMA);
if (buf == NULL) {
NVT_ERR("kzalloc for buf failed!\n");
ret = -ENOMEM;
kfree(str);
str = NULL;
goto kzalloc_failed;
}
if (copy_from_user(str, buff, count)) {
NVT_ERR("copy from user error\n");
ret = -EFAULT;
goto out;
}
#if NVT_SPI_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_spi_esd_check_work);
nvt_spi_esd_check_enable(false);
#endif /* #if NVT_SPI_TOUCH_ESD_PROTECT */
spi_wr = str[0] >> 7;
memcpy(buf, str+2, ((str[0] & 0x7F) << 8) | str[1]);
if (spi_wr == NVT_SPI_WRITE) { //SPI write
while (retries < 20) {
ret = nvt_spi_write(buf, ((str[0] & 0x7F) << 8) | str[1]);
if (!ret)
break;
NVT_ERR("error, retries=%d, ret=%d\n", retries, ret);
retries++;
}
if (unlikely(retries == 20)) {
NVT_ERR("error, ret = %d\n", ret);
ret = -EIO;
goto out;
}
} else if (spi_wr == NVT_SPI_READ) { //SPI read
while (retries < 20) {
ret = nvt_spi_read(buf, ((str[0] & 0x7F) << 8) | str[1]);
if (!ret)
break;
NVT_ERR("error, retries=%d, ret=%d\n", retries, ret);
retries++;
}
memcpy(str+2, buf, ((str[0] & 0x7F) << 8) | str[1]);
// copy buff to user if spi transfer
if (retries < 20) {
if (copy_to_user(buff, str, count)) {
ret = -EFAULT;
goto out;
}
}
if (unlikely(retries == 20)) {
NVT_ERR("error, ret = %d\n", ret);
ret = -EIO;
goto out;
}
} else {
NVT_ERR("Call error, str[0]=%d\n", str[0]);
ret = -EFAULT;
goto out;
}
out:
kfree(str);
kfree(buf);
kzalloc_failed:
return ret;
}
/*
******************************************************
* Description:
* Novatek touchscreen /proc/NVTSPI open function.
*
* return:
* Executive outcomes. 0---succeed. -12---failed.
******************************************************
*/
static int32_t nvt_spi_flash_open(struct inode *inode, struct file *file)
{
struct nvt_spi_flash_data *dev;
dev = kmalloc(sizeof(struct nvt_spi_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/NVTSPI close function.
*
* return:
* Executive outcomes. 0---succeed.
******************************************************
*/
static int32_t nvt_spi_flash_close(struct inode *inode, struct file *file)
{
struct nvt_spi_flash_data *dev = file->private_data;
kfree(dev);
return 0;
}
static const struct proc_ops nvt_flash_fops_spi = {
.proc_open = nvt_spi_flash_open,
.proc_release = nvt_spi_flash_close,
.proc_read = nvt_spi_flash_read,
};
/*
******************************************************
* Description:
* Novatek touchscreen /proc/NVTSPI initial function.
*
* return:
* Executive outcomes. 0---succeed. -12---failed.
******************************************************
*/
static int32_t nvt_spi_flash_proc_init(void)
{
nvt_spi_proc_entry = proc_create(DEVICE_NAME, 0444, NULL, &nvt_flash_fops_spi);
if (nvt_spi_proc_entry == NULL) {
NVT_ERR("Failed!\n");
return -ENOMEM;
}
NVT_LOG("Succeeded!\n");
NVT_LOG("============================================================\n");
NVT_LOG("Create /proc/%s\n", DEVICE_NAME);
NVT_LOG("============================================================\n");
return 0;
}
/*
******************************************************
* Description:
* Novatek touchscreen /proc/NVTSPI deinitial function.
*
* return:
* n.a.
******************************************************
*/
static void nvt_spi_flash_proc_deinit(void)
{
if (nvt_spi_proc_entry != NULL) {
remove_proc_entry(DEVICE_NAME, NULL);
nvt_spi_proc_entry = NULL;
NVT_LOG("Removed /proc/%s\n", DEVICE_NAME);
}
}
#endif
#if NVT_SPI_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_spi_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];
struct nvt_spi_data_t *ts = nvt_spi_data;
/* 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 = nvt_spi_gesture_key_array[0];
break;
case GESTURE_WORD_W:
NVT_LOG("Gesture : Word-W.\n");
keycode = nvt_spi_gesture_key_array[1];
break;
case GESTURE_WORD_V:
NVT_LOG("Gesture : Word-V.\n");
keycode = nvt_spi_gesture_key_array[2];
break;
case GESTURE_DOUBLE_CLICK:
NVT_LOG("Gesture : Double Click.\n");
keycode = nvt_spi_gesture_key_array[3];
break;
case GESTURE_WORD_Z:
NVT_LOG("Gesture : Word-Z.\n");
keycode = nvt_spi_gesture_key_array[4];
break;
case GESTURE_WORD_M:
NVT_LOG("Gesture : Word-M.\n");
keycode = nvt_spi_gesture_key_array[5];
break;
case GESTURE_WORD_O:
NVT_LOG("Gesture : Word-O.\n");
keycode = nvt_spi_gesture_key_array[6];
break;
case GESTURE_WORD_e:
NVT_LOG("Gesture : Word-e.\n");
keycode = nvt_spi_gesture_key_array[7];
break;
case GESTURE_WORD_S:
NVT_LOG("Gesture : Word-S.\n");
keycode = nvt_spi_gesture_key_array[8];
break;
case GESTURE_SLIDE_UP:
NVT_LOG("Gesture : Slide UP.\n");
keycode = nvt_spi_gesture_key_array[9];
break;
case GESTURE_SLIDE_DOWN:
NVT_LOG("Gesture : Slide DOWN.\n");
keycode = nvt_spi_gesture_key_array[10];
break;
case GESTURE_SLIDE_LEFT:
NVT_LOG("Gesture : Slide LEFT.\n");
keycode = nvt_spi_gesture_key_array[11];
break;
case GESTURE_SLIDE_RIGHT:
NVT_LOG("Gesture : Slide RIGHT.\n");
keycode = nvt_spi_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 int32_t nvt_spi_parse_dt(struct device *dev)
{
struct device_node *np = dev->of_node;
int32_t ret = 0;
struct nvt_spi_data_t *ts = nvt_spi_data;
#if NVT_SPI_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->wgp_stylus = of_property_read_bool(np, "novatek,wgp-stylus");
NVT_LOG("novatek,wgp-stylus=%d\n", ts->wgp_stylus);
ret = of_property_read_u32(np, "novatek,swrst-n8-addr", &NVT_SPI_SWRST_N8_ADDR);
if (ret) {
NVT_ERR("error reading novatek,swrst-n8-addr. ret=%d\n", ret);
return ret;
}
NVT_LOG("SWRST_N8_ADDR=0x%06X\n", NVT_SPI_SWRST_N8_ADDR);
ret = of_property_read_u32(np, "novatek,spi-rd-fast-addr", &NVT_SPI_RD_FAST_ADDR);
if (ret) {
NVT_LOG("not support novatek,spi-rd-fast-addr\n");
NVT_SPI_RD_FAST_ADDR = 0;
ret = 0;
} else
NVT_LOG("SPI_RD_FAST_ADDR=0x%06X\n", NVT_SPI_RD_FAST_ADDR);
return ret;
}
#else
static int32_t nvt_spi_parse_dt(struct device *dev)
{
struct nvt_spi_data_t *ts = nvt_spi_data;
#if NVT_SPI_TOUCH_SUPPORT_HW_RST
ts->reset_gpio = NVTTOUCH_RST_PIN;
#endif
ts->irq_gpio = NVTTOUCH_INT_PIN;
return 0;
}
#endif
/*
******************************************************
* Description:
* Novatek touchscreen config and request gpio
*
* return:
* Executive outcomes. 0---succeed. not 0---failed.
******************************************************
*/
static int nvt_spi_gpio_config(struct nvt_spi_data_t *ts)
{
int32_t ret = 0;
#if NVT_SPI_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_LOW, "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_SPI_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_spi_gpio_deconfig(struct nvt_spi_data_t *ts)
{
if (gpio_is_valid(ts->irq_gpio))
gpio_free(ts->irq_gpio);
#if NVT_SPI_TOUCH_SUPPORT_HW_RST
if (gpio_is_valid(ts->reset_gpio))
gpio_free(ts->reset_gpio);
#endif
}
static uint8_t nvt_spi_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_SPI_TOUCH_ESD_PROTECT
void nvt_spi_esd_check_enable(uint8_t enable)
{
/* update interrupt timer */
nvt_spi_irq_timer = jiffies;
/* clear esd_retry counter, if protect function is enabled */
nvt_spi_esd_retry = enable ? 0 : nvt_spi_esd_retry;
/* enable/disable esd check flag */
nvt_spi_esd_check = enable;
}
static void nvt_spi_esd_check_func(struct work_struct *work)
{
unsigned int timer = jiffies_to_msecs(jiffies - nvt_spi_irq_timer);
struct nvt_spi_data_t *ts = nvt_spi_data;
//NVT_LOG("esd_check = %d (retry %d)\n", esd_check, esd_retry);
if ((timer > NVT_SPI_TOUCH_ESD_CHECK_PERIOD) && esd_check) {
mutex_lock(&ts->lock);
NVT_ERR("do ESD recovery, timer = %d, retry = %d\n", timer, nvt_spi_esd_retry);
/* do esd recovery, reload fw */
nvt_spi_update_firmware(NVT_SPI_BOOT_UPDATE_FIRMWARE_NAME);
mutex_unlock(&ts->lock);
/* update interrupt timer */
nvt_spi_irq_timer = jiffies;
/* update esd_retry counter */
nvt_spi_esd_retry++;
}
queue_delayed_work(nvt_spi_esd_check_wq, &nvt_spi_esd_check_work,
msecs_to_jiffies(NVT_SPI_TOUCH_ESD_CHECK_PERIOD));
}
#endif /* #if NVT_SPI_TOUCH_ESD_PROTECT */
#define NVT_SPI_PEN_DATA_LEN 14
#if NVT_SPI_CHECK_PEN_DATA_CHECKSUM
static int32_t nvt_spi_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++)
NVT_ERR("%02X ", buf[i]);
NVT_ERR("\n");
return -EIO;
}
return 0;
}
#endif // #if NVT_SPI_CHECK_PEN_DATA_CHECKSUM
#if NVT_SPI_TOUCH_WDT_RECOVERY
static uint8_t nvt_spi_recovery_cnt;
static uint8_t nvt_spi_wdt_fw_recovery(uint8_t *point_data)
{
uint32_t recovery_cnt_max = 10;
uint8_t recovery_enable = false;
uint8_t i = 0;
nvt_spi_recovery_cnt++;
/* check pattern */
for (i = 1 ; i < 7 ; i++) {
if ((point_data[i] != 0xFD) && (point_data[i] != 0xFE)) {
nvt_spi_recovery_cnt = 0;
break;
}
}
if (nvt_spi_recovery_cnt > recovery_cnt_max) {
recovery_enable = true;
nvt_spi_recovery_cnt = 0;
}
return recovery_enable;
}
#endif /* #if NVT_SPI_TOUCH_WDT_RECOVERY */
#if NVT_SPI_POINT_DATA_CHECKSUM
static int32_t nvt_spi_point_data_checksum(uint8_t *buf, uint8_t length)
{
uint8_t checksum = 0;
int32_t i = 0;
// Generate checksum
for (i = 0; i < length - 1; i++)
checksum += buf[i + 1];
checksum = (~checksum + 1);
// Compare ckecksum and dump fail data
if (checksum != buf[length]) {
NVT_ERR("packet checksum not match. (point_data[%d]=0x%02X, checksum=0x%02X)\n",
length, buf[length], checksum);
for (i = 0; i < 10; i++)
NVT_LOG("%02X %02X %02X %02X %02X %02X\n",
buf[1 + i * 6], buf[2 + i * 6], buf[3 + i * 6],
buf[4 + i * 6], buf[5 + i * 6], buf[6 + i * 6]);
NVT_LOG("%02X %02X %02X %02X %02X\n",
buf[61], buf[62], buf[63], buf[64], buf[65]);
return -EIO;
}
return 0;
}
#endif /* NVT_SPI_POINT_DATA_CHECKSUM */
/*
******************************************************
* Description:
* Novatek touchscreen work function.
*
* return:
* n.a.
******************************************************
*/
#define NVT_SPI_POINT_DATA_LEN 65
#define NVT_SPI_POINT (NVT_SPI_POINT_DATA_LEN + NVT_SPI_PEN_DATA_LEN + 1 + NVT_SPI_DUMMY_BYTES)
static irqreturn_t nvt_spi_work_func(int irq, void *data)
{
int32_t ret = -1;
uint8_t point_data[NVT_SPI_POINT] = {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 NVT_SPI_MT_PROTOCOL_B
uint8_t press_id[NVT_SPI_TOUCH_MAX_FINGER_NUM] = {0};
#endif /* NVT_SPI_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;
struct nvt_spi_data_t *ts = nvt_spi_data;
#if NVT_SPI_WAKEUP_GESTURE
if (bTouchIsAwake == 0)
pm_wakeup_event(&ts->input_dev->dev, 5000);
#endif
mutex_lock(&ts->lock);
if (ts->pen_support)
ret = nvt_spi_read(point_data, NVT_SPI_POINT_DATA_LEN + NVT_SPI_PEN_DATA_LEN + 1);
else
ret = nvt_spi_read(point_data, NVT_SPI_POINT_DATA_LEN + 1);
if (ret < 0) {
NVT_ERR("nvt_spi_read failed.(%d)\n", ret);
goto XFER_ERROR;
}
//--- dump SPI 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_SPI_TOUCH_WDT_RECOVERY
/* ESD protect by WDT */
if (nvt_spi_wdt_fw_recovery(point_data)) {
NVT_ERR("Recover for fw reset, %02X\n", point_data[1]);
nvt_spi_update_firmware(NVT_SPI_BOOT_UPDATE_FIRMWARE_NAME);
goto XFER_ERROR;
}
#endif /* #if NVT_SPI_TOUCH_WDT_RECOVERY */
/* ESD protect by FW handshake */
if (nvt_spi_fw_recovery(point_data)) {
#if NVT_SPI_TOUCH_ESD_PROTECT
nvt_spi_esd_check_enable(true);
#endif /* #if NVT_SPI_TOUCH_ESD_PROTECT */
goto XFER_ERROR;
}
#if NVT_SPI_POINT_DATA_CHECKSUM
if (NVT_SPI_POINT_DATA_LEN >= NVT_SPI_POINT_DATA_CHECKSUM_LEN) {
ret = nvt_spi_point_data_checksum(point_data, NVT_SPI_POINT_DATA_CHECKSUM_LEN);
if (ret)
goto XFER_ERROR;
}
#endif /* NVT_SPI_POINT_DATA_CHECKSUM */
#if NVT_SPI_WAKEUP_GESTURE
if (bTouchIsAwake == 0) {
input_id = (uint8_t)(point_data[1] >> 3);
nvt_spi_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_SPI_TOUCH_ESD_PROTECT
/* update interrupt timer */
nvt_spi_irq_timer = jiffies;
#endif /* #if NVT_SPI_TOUCH_ESD_PROTECT */
input_x = (uint32_t)(point_data[position + 1] << 4);
input_x += (uint32_t) (point_data[position + 3] >> 4);
input_y = (uint32_t)(point_data[position + 2] << 4);
input_y += (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]);
input_p += (uint32_t)(point_data[i + 63] << 8);
if (input_p > NVT_SPI_TOUCH_FORCE_NUM)
input_p = NVT_SPI_TOUCH_FORCE_NUM;
} else
input_p = (uint32_t)(point_data[position + 5]);
if (input_p == 0)
input_p = 1;
#if NVT_SPI_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 /* NVT_SPI_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 /* NVT_SPI_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 NVT_SPI_MT_PROTOCOL_B
#else /* NVT_SPI_MT_PROTOCOL_B */
input_mt_sync(ts->input_dev);
#endif /* NVT_SPI_MT_PROTOCOL_B */
finger_cnt++;
}
}
#if NVT_SPI_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 /* NVT_SPI_MT_PROTOCOL_B */
if (finger_cnt == 0) {
input_report_key(ts->input_dev, BTN_TOUCH, 0);
input_mt_sync(ts->input_dev);
}
#endif /* NVT_SPI_MT_PROTOCOL_B */
#if NVT_SPI_TOUCH_KEY_NUM > 0
if (point_data[61] == 0xF8) {
#if NVT_SPI_TOUCH_ESD_PROTECT
/* update interrupt timer */
nvt_spi_irq_timer = jiffies;
#endif /* #if NVT_SPI_TOUCH_ESD_PROTECT */
for (i = 0; i < ts->max_button_num; i++)
input_report_key(ts->input_dev, nvt_spi_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, nvt_spi_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 NVT_SPI_CHECK_PEN_DATA_CHECKSUM
if (nvt_spi_pen_data_checksum(&point_data[66], NVT_SPI_PEN_DATA_LEN)) {
// pen data packet checksum not match, skip it
goto XFER_ERROR;
}
#endif // #if NVT_SPI_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);
pen_x += (uint32_t)(point_data[68]);
pen_y = (uint32_t)(point_data[69] << 8);
pen_y += (uint32_t)(point_data[70]);
pen_pressure = (uint32_t)(point_data[71] << 8);
pen_pressure += (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);
pen_distance += (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 chip version trim function.
*
* return:
* Executive outcomes. 0---NVT IC. -1---not NVT IC.
******************************************************
*/
static int8_t nvt_spi_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;
struct nvt_spi_data_t *ts = nvt_spi_data;
//---Check for 5 times---
for (retry = 5; retry > 0; retry--) {
nvt_spi_bootloader_reset();
nvt_spi_set_page(chip_ver_trim_addr);
buf[0] = chip_ver_trim_addr & 0x7F;
buf[1] = 0x00;
buf[2] = 0x00;
buf[3] = 0x00;
buf[4] = 0x00;
buf[5] = 0x00;
buf[6] = 0x00;
nvt_spi_read(buf, 7);
NVT_LOG("buf[1]=0x%02X,[2]=0x%02X,[3]=0x%02X,[4]=0x%02X,[5]=0x%02X,[6]=0x%02X\n",
buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
// compare read chip id on supported list
for (list = 0; list < ARRAY_SIZE(nvt_spi_trim_id_table); list++) {
found_nvt_chip = 0;
// compare each byte
for (i = 0; i < NVT_SPI_ID_BYTE_MAX; i++) {
if (nvt_spi_trim_id_table[list].mask[i]) {
if (buf[i + 1] != nvt_spi_trim_id_table[list].id[i])
break;
}
}
if (i == NVT_SPI_ID_BYTE_MAX)
found_nvt_chip = 1;
if (found_nvt_chip) {
NVT_LOG("This is NVT touch IC\n");
ts->mmap = nvt_spi_trim_id_table[list].mmap;
ts->hw_crc = nvt_spi_trim_id_table[list].hwinfo->hw_crc;
ret = 0;
goto out;
} else {
ts->mmap = NULL;
ret = -1;
}
}
msleep(20);
}
out:
return ret;
}
#if defined(CONFIG_DRM)
static int nvt_spi_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_spi_panel = panel;
return 0;
}
}
return PTR_ERR(panel);
}
#endif
static int32_t nvt_spi_late_probe(struct spi_device *client)
{
int32_t ret = 0;
//---check chip version trim---
ret = nvt_spi_check_chip_ver_trim(NVT_SPI_CHIP_VER_TRIM_ADDR);
if (ret) {
NVT_LOG("try to check from old chip ver trim address\n");
ret = nvt_spi_check_chip_ver_trim(NVT_SPI_CHIP_VER_TRIM_OLD_ADDR);
if (ret) {
NVT_ERR("chip is not identified\n");
ret = -EINVAL;
return ret;
}
}
if (nvt_spi_update_firmware(NVT_SPI_BOOT_UPDATE_FIRMWARE_NAME))
NVT_ERR("download firmware failed, ignore check fw state\n");
else
nvt_spi_check_fw_reset_state(NVT_SPI_RESET_STATE_REK);
//---set device node---
#if NVT_SPI_TOUCH_PROC
ret = nvt_spi_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_SPI_TOUCH_EXT_PROC
ret = nvt_spi_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_SPI_TOUCH_MP
ret = nvt_spi_mp_proc_init();
if (ret != 0) {
NVT_ERR("nvt mp proc init failed. ret=%d\n", ret);
goto err_mp_proc_init_failed;
}
#endif
bTouchIsAwake = 1;
NVT_LOG("end\n");
nvt_spi_irq_enable(true);
return 0;
#if NVT_SPI_TOUCH_MP
nvt_spi_mp_proc_deinit();
err_mp_proc_init_failed:
#endif
#if NVT_SPI_TOUCH_EXT_PROC
nvt_spi_extra_proc_deinit();
err_extra_proc_init_failed:
#endif
#if NVT_SPI_TOUCH_PROC
nvt_spi_flash_proc_deinit();
err_flash_proc_init_failed:
#endif
return 0;
}
/*
*******************************************************
* Description:
* Novatek touchscreen driver probe function.
*
* return:
* Executive outcomes. 0---succeed. negative---failed
******************************************************
*/
static int32_t nvt_spi_probe(struct spi_device *client)
{
int32_t ret = 0;
#if defined(CONFIG_DRM)
struct device_node *dp = NULL;
#endif
#if ((NVT_SPI_TOUCH_KEY_NUM > 0) || NVT_SPI_WAKEUP_GESTURE)
int32_t retry = 0;
#endif
struct nvt_spi_data_t *ts;
#if defined(CONFIG_DRM)
dp = client->dev.of_node;
ret = nvt_spi_check_dt(dp);
if (ret == -EPROBE_DEFER)
return ret;
if (ret) {
ret = -ENODEV;
return ret;
}
#endif
NVT_LOG("start\n");
ts = kzalloc(sizeof(struct nvt_spi_data_t), GFP_KERNEL);
if (ts == NULL) {
NVT_ERR("failed to allocated memory for nvt ts data\n");
return -ENOMEM;
}
nvt_spi_data = ts;
ts->xbuf = kzalloc(NVT_SPI_XBUF_LEN, GFP_KERNEL);
if (ts->xbuf == NULL) {
NVT_ERR("kzalloc for xbuf failed!\n");
ret = -ENOMEM;
goto err_malloc_xbuf;
}
ts->rbuf = kzalloc(NVT_SPI_READ_LEN, GFP_KERNEL);
if (ts->rbuf == NULL) {
NVT_ERR("kzalloc for rbuf failed!\n");
ret = -ENOMEM;
goto err_malloc_rbuf;
}
ts->client = client;
spi_set_drvdata(client, ts);
//---prepare for spi parameter---
if (ts->client->master->flags & SPI_MASTER_HALF_DUPLEX) {
NVT_ERR("Full duplex not supported by master\n");
ret = -EIO;
goto err_ckeck_full_duplex;
}
ts->client->bits_per_word = 8;
ts->client->mode = SPI_MODE_0;
ret = spi_setup(ts->client);
if (ret < 0) {
NVT_ERR("Failed to perform SPI setup\n");
goto err_spi_setup;
}
NVT_LOG("mode=%d, max_speed_hz=%d\n", ts->client->mode, ts->client->max_speed_hz);
//---parse dts---
ret = nvt_spi_parse_dt(&client->dev);
if (ret) {
NVT_ERR("parse dt error\n");
goto err_spi_setup;
}
//---request and config GPIOs---
ret = nvt_spi_gpio_config(ts);
if (ret) {
NVT_ERR("gpio config error!\n");
goto err_gpio_config_failed;
}
mutex_init(&ts->lock);
mutex_init(&ts->xbuf_lock);
//---eng reset before TP_RESX high
nvt_spi_eng_reset();
#if NVT_SPI_TOUCH_SUPPORT_HW_RST
gpio_set_value(ts->reset_gpio, 1);
#endif
// need 10ms delay after POR(power on reset)
msleep(20);
ts->abs_x_max = NVT_SPI_TOUCH_DEFAULT_MAX_WIDTH;
ts->abs_y_max = NVT_SPI_TOUCH_DEFAULT_MAX_HEIGHT;
//---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 = NVT_SPI_TOUCH_MAX_FINGER_NUM;
#if NVT_SPI_TOUCH_KEY_NUM > 0
ts->max_button_num = NVT_SPI_TOUCH_KEY_NUM;
#endif
ts->int_trigger_type = NVT_SPI_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 NVT_SPI_MT_PROTOCOL_B
input_mt_init_slots(ts->input_dev, ts->max_touch_num, 0);
#endif
// pressure = NVT_SPI_TOUCH_FORCE_NUM
input_set_abs_params(ts->input_dev, ABS_MT_PRESSURE, 0, NVT_SPI_TOUCH_FORCE_NUM, 0, 0);
#if NVT_SPI_TOUCH_MAX_FINGER_NUM > 1
// area = 255
input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
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 NVT_SPI_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 //NVT_SPI_MT_PROTOCOL_B
#endif //NVT_SPI_TOUCH_MAX_FINGER_NUM > 1
#if NVT_SPI_TOUCH_KEY_NUM > 0
for (retry = 0; retry < ts->max_button_num; retry++)
input_set_capability(ts->input_dev, EV_KEY, nvt_spi_touch_key_array[retry]);
#endif
#if NVT_SPI_WAKEUP_GESTURE
for (retry = 0; retry < ARRAY_SIZE(nvt_spi_gesture_key_array); retry++)
input_set_capability(ts->input_dev, EV_KEY, nvt_spi_gesture_key_array[retry]);
#endif
snprintf(ts->phys, sizeof(ts->phys), "input/ts");
ts->input_dev->name = NVT_SPI_TS_NAME;
ts->input_dev->phys = ts->phys;
ts->input_dev->id.bustype = BUS_SPI;
//---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->wgp_stylus) {
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,
NVT_SPI_PEN_PRESSURE_MAX, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_DISTANCE, 0,
NVT_SPI_PEN_DISTANCE_MAX, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_TILT_X,
NVT_SPI_PEN_TILT_MIN, NVT_SPI_PEN_TILT_MAX, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_TILT_Y,
NVT_SPI_PEN_TILT_MIN, NVT_SPI_PEN_TILT_MAX, 0, 0);
snprintf(ts->pen_phys, sizeof(ts->pen_phys), "input/pen");
ts->pen_input_dev->name = NVT_SPI_PEN_NAME;
ts->pen_input_dev->phys = ts->pen_phys;
ts->pen_input_dev->id.bustype = BUS_SPI;
//---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_spi_work_func,
ts->int_trigger_type | IRQF_ONESHOT, NVT_SPI_NAME, ts);
if (ret != 0) {
NVT_ERR("request irq failed. ret=%d\n", ret);
goto err_int_request_failed;
} else {
nvt_spi_irq_enable(false);
NVT_LOG("request irq %d succeed\n", client->irq);
}
}
#if NVT_SPI_WAKEUP_GESTURE
device_init_wakeup(&ts->input_dev->dev, 1);
#endif
#if NVT_SPI_BOOT_UPDATE_FIRMWARE
nvt_spi_fwu_wq = alloc_workqueue("nvt_spi_fwu_wq", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
if (!nvt_spi_fwu_wq) {
NVT_ERR("nvt_spi_fwu_wq create workqueue failed\n");
ret = -ENOMEM;
goto err_create_nvt_spi_fwu_wq_failed;
}
INIT_DELAYED_WORK(&ts->nvt_fwu_work, nvt_spi_update_firmware_work);
// please make sure boot update start after display reset(RESX) sequence
//queue_delayed_work(nvt_spi_fwu_wq, &ts->nvt_fwu_work, msecs_to_jiffies(14000));
#endif
NVT_LOG("NVT_SPI_TOUCH_ESD_PROTECT is %d\n", NVT_SPI_TOUCH_ESD_PROTECT);
#if NVT_SPI_TOUCH_ESD_PROTECT
INIT_DELAYED_WORK(&nvt_spi_esd_check_work, nvt_spi_esd_check_func);
nvt_spi_esd_check_wq = alloc_workqueue("nvt_spi_esd_check_wq", WQ_MEM_RECLAIM, 1);
if (!nvt_spi_esd_check_wq) {
NVT_ERR("nvt_spi_esd_check_wq create workqueue failed\n");
ret = -ENOMEM;
goto err_create_nvt_spi_esd_check_wq_failed;
}
queue_delayed_work(nvt_spi_esd_check_wq, &nvt_spi_esd_check_work,
msecs_to_jiffies(NVT_SPI_TOUCH_ESD_CHECK_PERIOD));
#endif /* #if NVT_SPI_TOUCH_ESD_PROTECT */
#if defined(CONFIG_DRM)
//if (!strcmp(ts->touch_environment, "pvm"))
nvt_spi_register_for_panel_events(client->dev.of_node, ts);
#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
NVT_LOG("end\n");
return 0;
#if defined(CONFIG_DRM)
#elif defined(_MSM_DRM_NOTIFY_H_)
err_register_drm_notif_failed:
#else
err_register_fb_notif_failed:
#endif
#if NVT_SPI_TOUCH_MP
nvt_spi_mp_proc_deinit();
#endif
#if NVT_SPI_TOUCH_EXT_PROC
nvt_spi_extra_proc_deinit();
#endif
#if NVT_SPI_TOUCH_PROC
nvt_spi_flash_proc_deinit();
#endif
#if NVT_SPI_TOUCH_ESD_PROTECT
if (nvt_spi_esd_check_wq) {
cancel_delayed_work_sync(&nvt_spi_esd_check_work);
destroy_workqueue(nvt_spi_esd_check_wq);
nvt_spi_esd_check_wq = NULL;
}
err_create_nvt_spi_esd_check_wq_failed:
#endif
#if NVT_SPI_BOOT_UPDATE_FIRMWARE
if (nvt_spi_fwu_wq) {
cancel_delayed_work_sync(&ts->nvt_fwu_work);
destroy_workqueue(nvt_spi_fwu_wq);
nvt_spi_fwu_wq = NULL;
}
err_create_nvt_spi_fwu_wq_failed:
#endif
#if NVT_SPI_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:
mutex_destroy(&ts->xbuf_lock);
mutex_destroy(&ts->lock);
nvt_spi_gpio_deconfig(ts);
err_gpio_config_failed:
err_spi_setup:
err_ckeck_full_duplex:
spi_set_drvdata(client, NULL);
kfree(ts->rbuf);
ts->rbuf = NULL;
err_malloc_rbuf:
kfree(ts->xbuf);
ts->xbuf = NULL;
err_malloc_xbuf:
kfree(ts);
ts = NULL;
return ret;
}
/*
*******************************************************
* Description:
* Novatek touchscreen driver release function.
*
* return:
* Executive outcomes. 0---succeed.
******************************************************
*/
static int32_t nvt_spi_remove(struct spi_device *client)
{
struct nvt_spi_data_t *ts = nvt_spi_data;
NVT_LOG("Removing driver...\n");
#if defined(CONFIG_DRM)
if (active_spi_panel && ts->notifier_cookie)
panel_event_notifier_unregister(ts->notifier_cookie);
#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
#if NVT_SPI_TOUCH_MP
nvt_spi_mp_proc_deinit();
#endif
#if NVT_SPI_TOUCH_EXT_PROC
nvt_spi_extra_proc_deinit();
#endif
#if NVT_SPI_TOUCH_PROC
nvt_spi_flash_proc_deinit();
#endif
#if NVT_SPI_TOUCH_ESD_PROTECT
if (nvt_spi_esd_check_wq) {
cancel_delayed_work_sync(&nvt_spi_esd_check_work);
nvt_spi_esd_check_enable(false);
destroy_workqueue(nvt_spi_esd_check_wq);
nvt_spi_esd_check_wq = NULL;
}
#endif
#if NVT_SPI_BOOT_UPDATE_FIRMWARE
if (nvt_spi_fwu_wq) {
cancel_delayed_work_sync(&ts->nvt_fwu_work);
destroy_workqueue(nvt_spi_fwu_wq);
nvt_spi_fwu_wq = NULL;
}
#endif
#if NVT_SPI_WAKEUP_GESTURE
device_init_wakeup(&ts->input_dev->dev, 0);
#endif
nvt_spi_irq_enable(false);
free_irq(client->irq, ts);
mutex_destroy(&ts->xbuf_lock);
mutex_destroy(&ts->lock);
nvt_spi_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;
}
spi_set_drvdata(client, NULL);
kfree(ts->xbuf);
ts->xbuf = NULL;
kfree(ts);
ts = NULL;
return 0;
}
static void nvt_spi_shutdown(struct spi_device *client)
{
struct nvt_spi_data_t *ts = nvt_spi_data;
NVT_LOG("Shutdown driver...\n");
nvt_spi_irq_enable(false);
#if defined(CONFIG_DRM)
if (active_spi_panel && ts->notifier_cookie)
panel_event_notifier_unregister(ts->notifier_cookie);
#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
#if NVT_SPI_TOUCH_MP
nvt_spi_mp_proc_deinit();
#endif
#if NVT_SPI_TOUCH_EXT_PROC
nvt_spi_extra_proc_deinit();
#endif
#if NVT_SPI_TOUCH_PROC
nvt_spi_flash_proc_deinit();
#endif
#if NVT_SPI_TOUCH_ESD_PROTECT
if (nvt_spi_esd_check_wq) {
cancel_delayed_work_sync(&nvt_spi_esd_check_work);
nvt_spi_esd_check_enable(false);
destroy_workqueue(nvt_spi_esd_check_wq);
nvt_spi_esd_check_wq = NULL;
}
#endif /* #if NVT_SPI_TOUCH_ESD_PROTECT */
#if NVT_SPI_BOOT_UPDATE_FIRMWARE
if (nvt_spi_fwu_wq) {
cancel_delayed_work_sync(&ts->nvt_fwu_work);
destroy_workqueue(nvt_spi_fwu_wq);
nvt_spi_fwu_wq = NULL;
}
#endif
#if NVT_SPI_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_spi_suspend(struct device *dev)
{
uint8_t buf[4] = {0};
#if NVT_SPI_MT_PROTOCOL_B
uint32_t i = 0;
#endif
struct nvt_spi_data_t *ts = nvt_spi_data;
if (!bTouchIsAwake) {
NVT_LOG("Touch is already suspend\n");
return 0;
}
#if !NVT_SPI_WAKEUP_GESTURE
nvt_spi_irq_enable(false);
#endif
#if NVT_SPI_TOUCH_ESD_PROTECT
NVT_LOG("cancel delayed work sync\n");
cancel_delayed_work_sync(&nvt_spi_esd_check_work);
nvt_spi_esd_check_enable(false);
#endif /* #if NVT_SPI_TOUCH_ESD_PROTECT */
mutex_lock(&ts->lock);
NVT_LOG("start\n");
bTouchIsAwake = 0;
#if NVT_SPI_WAKEUP_GESTURE
//---write command to enter "wakeup gesture mode"---
buf[0] = NVT_SPI_EVENT_MAP_HOST_CMD;
buf[1] = 0x13;
nvt_spi_write(buf, 2);
enable_irq_wake(ts->client->irq);
NVT_LOG("Enabled touch wakeup gesture\n");
#else // NVT_SPI_WAKEUP_GESTURE
//---write command to enter "deep sleep mode"---
buf[0] = NVT_SPI_EVENT_MAP_HOST_CMD;
buf[1] = 0x11;
nvt_spi_write(buf, 2);
#endif // NVT_SPI_WAKEUP_GESTURE
mutex_unlock(&ts->lock);
/* release all touches */
#if NVT_SPI_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 !NVT_SPI_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_spi_resume(struct device *dev)
{
struct nvt_spi_data_t *ts = nvt_spi_data;
if (bTouchIsAwake || ts->fw_ver == 0) {
nvt_spi_late_probe(ts->client);
NVT_LOG("nvt_spi_late_probe\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_SPI_TOUCH_SUPPORT_HW_RST
gpio_set_value(ts->reset_gpio, 1);
#endif
if (nvt_spi_update_firmware(NVT_SPI_BOOT_UPDATE_FIRMWARE_NAME))
NVT_ERR("download firmware failed, ignore check fw state\n");
else
nvt_spi_check_fw_reset_state(NVT_SPI_RESET_STATE_REK);
#if !NVT_SPI_WAKEUP_GESTURE
nvt_spi_irq_enable(true);
#endif
#if NVT_SPI_TOUCH_ESD_PROTECT
nvt_spi_esd_check_enable(false);
queue_delayed_work(nvt_spi_esd_check_wq, &nvt_spi_esd_check_work,
msecs_to_jiffies(NVT_SPI_TOUCH_ESD_CHECK_PERIOD));
#endif /* #if NVT_SPI_TOUCH_ESD_PROTECT */
bTouchIsAwake = 1;
mutex_unlock(&ts->lock);
NVT_LOG("end\n");
return 0;
}
#if defined(CONFIG_DRM)
static void nvt_spi_panel_notifier_callback(enum panel_event_notifier_tag tag,
struct panel_event_notification *notification, void *client_data)
{
struct nvt_spi_data_t *ts = client_data;
if (!notification) {
pr_err("Invalid notification\n");
return;
}
NVT_LOG("Notification type:%d, early_trigger:%d",
notification->notif_type,
notification->notif_data.early_trigger);
switch (notification->notif_type) {
case DRM_PANEL_EVENT_UNBLANK:
if (notification->notif_data.early_trigger)
NVT_LOG("resume notification pre commit\n");
else
nvt_spi_resume(&ts->client->dev);
break;
case DRM_PANEL_EVENT_BLANK:
if (notification->notif_data.early_trigger)
nvt_spi_suspend(&ts->client->dev);
else
NVT_LOG("suspend notification post commit\n");
break;
case DRM_PANEL_EVENT_BLANK_LP:
NVT_LOG("received lp event\n");
break;
case DRM_PANEL_EVENT_FPS_CHANGE:
NVT_LOG("shashank:Received fps change old fps:%d new fps:%d\n",
notification->notif_data.old_fps,
notification->notif_data.new_fps);
break;
default:
NVT_LOG("notification serviced :%d\n",
notification->notif_type);
break;
}
}
#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_spi_data_t *ts =
container_of(self, struct nvt_spi_data_t, 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_spi_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_spi_data_t *ts =
container_of(self, struct nvt_spi_data_t, 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_spi_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
static const struct spi_device_id nvt_spi_id[] = {
{ NVT_SPI_NAME, 0 },
{ }
};
#ifdef CONFIG_OF
static const struct of_device_id nvt_spi_match_table[] = {
{ .compatible = "novatek,NVT-ts",},
{ },
};
#endif
static struct spi_driver nvt_spi_driver = {
.probe = nvt_spi_probe,
.remove = nvt_spi_remove,
.shutdown = nvt_spi_shutdown,
.id_table = nvt_spi_id,
.driver = {
.name = NVT_SPI_NAME,
.owner = THIS_MODULE,
#ifdef CONFIG_OF
.of_match_table = nvt_spi_match_table,
#endif
},
};
/*
******************************************************
* Description:
* Driver Install function.
*
* return:
* Executive Outcomes. 0---succeed. not 0---failed.
*******************************************************
*/
static int32_t __init nvt_spi_driver_init(void)
{
int32_t ret = 0;
NVT_LOG("start\n");
//---add spi driver---
ret = spi_register_driver(&nvt_spi_driver);
if (ret) {
NVT_ERR("failed to add spi driver");
goto err_driver;
}
NVT_LOG("finished\n");
err_driver:
return ret;
}
/*
******************************************************
* Description:
* Driver uninstall function.
*
* return:
* n.a.
*******************************************************
*/
static void __exit nvt_spi_driver_exit(void)
{
spi_unregister_driver(&nvt_spi_driver);
}
module_init(nvt_spi_driver_init);
module_exit(nvt_spi_driver_exit);
MODULE_DESCRIPTION("Novatek Touchscreen Driver");
MODULE_LICENSE("GPL v2");
#endif
Посилання в новій задачі View Git Blame Копіювати постійне посилання