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a155-U-u1/kernel-5.10/drivers/input/touchscreen/NT36672C/nt36xxx.c
physwizz 99537be4e2 first
2024-03-11 06:53:12 +11:00

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/*
* Copyright (C) 2010 - 2021 Novatek, Inc.
*
* $Revision: 91938 $
* $Date: 2021-12-06 19:34:27 +0800 (週一, 06 十二月 2021) $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/proc_fs.h>
#include <linux/input/mt.h>
#include <linux/of_gpio.h>
#include <linux/of_irq.h>
#include <linux/version.h>
#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
extern void Boot_Update_Firmware(struct kthread_work *work);
#endif
#if IS_ENABLED(CONFIG_DRM_MEDIATEK)
static int nvt_disp_notifier_callback(struct notifier_block *nb,
unsigned long value, void *v);
#endif
static int32_t nvt_ts_resume(struct device *dev);
static int32_t nvt_ts_suspend(struct device *dev);
uint32_t ENG_RST_ADDR = 0x7FFF80;
uint32_t SWRST_SIF_ADDR = 0; //read from dtsi
uint32_t SPI_RD_FAST_ADDR = 0; //read from dtsi
#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
#ifdef CONFIG_MTK_SPI
const struct mt_chip_conf spi_ctrdata = {
.setuptime = 25,
.holdtime = 25,
.high_time = 5, /* 10MHz (SPI_SPEED=100M / (high_time+low_time(10ns)))*/
.low_time = 5,
.cs_idletime = 2,
.ulthgh_thrsh = 0,
.cpol = 0,
.cpha = 0,
.rx_mlsb = 1,
.tx_mlsb = 1,
.tx_endian = 0,
.rx_endian = 0,
.com_mod = DMA_TRANSFER,
.pause = 0,
.finish_intr = 1,
.deassert = 0,
.ulthigh = 0,
.tckdly = 0,
};
#endif
#ifdef CONFIG_SPI_MT65XX
const struct mtk_chip_config spi_ctrdata = {
.rx_mlsb = 1,
.tx_mlsb = 1,
.sample_sel = 0,
.cs_setuptime = 0,
.cs_holdtime = 0,
.cs_idletime = 0,
.deassert_mode = false,
.tick_delay = 0,
};
#endif
static uint8_t bTouchIsAwake = 0;
/*******************************************************
Description:
Novatek touchscreen irq enable/disable function.
return:
n.a.
*******************************************************/
static void nvt_irq_enable(bool enable)
{
struct irq_desc *desc;
if (enable) {
if (!ts->irq_enabled) {
enable_irq(ts->client->irq);
ts->irq_enabled = true;
}
} else {
if (ts->irq_enabled) {
disable_irq(ts->client->irq);
ts->irq_enabled = false;
}
}
desc = irq_to_desc(ts->client->irq);
NVT_LOG("enable=%d, desc->depth=%d\n", enable, desc->depth);
}
/*******************************************************
Description:
Novatek touchscreen spi read/write core function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static inline int32_t spi_read_write(struct spi_device *client, uint8_t *buf, size_t len , NVT_SPI_RW rw)
{
struct spi_message m;
struct spi_transfer t = {
.len = len,
};
memset(ts->xbuf, 0, len + DUMMY_BYTES);
memcpy(ts->xbuf, buf, len);
switch (rw) {
case NVTREAD:
t.tx_buf = ts->xbuf;
t.rx_buf = ts->rbuf;
t.len = (len + DUMMY_BYTES);
break;
case NVTWRITE:
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 CTP_SPI_READ(struct spi_device *client, uint8_t *buf, uint16_t len)
{
int32_t ret = -1;
int32_t retries = 0;
mutex_lock(&ts->xbuf_lock);
buf[0] = SPI_READ_MASK(buf[0]);
while (retries < 5) {
ret = spi_read_write(client, buf, len, NVTREAD);
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 CTP_SPI_WRITE(struct spi_device *client, uint8_t *buf, uint16_t len)
{
int32_t ret = -1;
int32_t retries = 0;
mutex_lock(&ts->xbuf_lock);
buf[0] = SPI_WRITE_MASK(buf[0]);
while (retries < 5) {
ret = spi_read_write(client, buf, len, NVTWRITE);
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_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 CTP_SPI_WRITE(ts->client, buf, 3);
}
/*******************************************************
Description:
Novatek touchscreen write data to specify address.
return:
Executive outcomes. 0---succeed. -5---access fail.
*******************************************************/
int32_t nvt_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 = CTP_SPI_WRITE(ts->client, 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 = CTP_SPI_WRITE(ts->client, 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_bld_crc_enable(void)
{
uint8_t buf[4] = {0};
//---set xdata index to BLD_CRC_EN_ADDR---
nvt_set_page(ts->mmap->BLD_CRC_EN_ADDR);
//---read data from index---
buf[0] = ts->mmap->BLD_CRC_EN_ADDR & (0x7F);
buf[1] = 0xFF;
CTP_SPI_READ(ts->client, buf, 2);
//---write data to index---
buf[0] = ts->mmap->BLD_CRC_EN_ADDR & (0x7F);
buf[1] = buf[1] | (0x01 << 7);
CTP_SPI_WRITE(ts->client, buf, 2);
}
/*******************************************************
Description:
Novatek touchscreen clear status & enable fw crc function.
return:
N/A.
*******************************************************/
void nvt_fw_crc_enable(void)
{
uint8_t buf[4] = {0};
//---set xdata index to EVENT BUF ADDR---
nvt_set_page(ts->mmap->EVENT_BUF_ADDR);
//---clear fw reset status---
buf[0] = EVENT_MAP_RESET_COMPLETE & (0x7F);
buf[1] = 0x00;
CTP_SPI_WRITE(ts->client, buf, 2);
//---enable fw crc---
buf[0] = EVENT_MAP_HOST_CMD & (0x7F);
buf[1] = 0xAE; //enable fw crc command
CTP_SPI_WRITE(ts->client, buf, 2);
}
/*******************************************************
Description:
Novatek touchscreen set boot ready function.
return:
N/A.
*******************************************************/
void nvt_boot_ready(void)
{
//---write BOOT_RDY status cmds---
nvt_write_addr(ts->mmap->BOOT_RDY_ADDR, 1);
mdelay(5);
if (!ts->hw_crc) {
//---write BOOT_RDY status cmds---
nvt_write_addr(ts->mmap->BOOT_RDY_ADDR, 0);
//---write POR_CD cmds---
nvt_write_addr(ts->mmap->POR_CD_ADDR, 0xA0);
}
}
/*******************************************************
Description:
Novatek touchscreen enable auto copy mode function.
return:
N/A.
*******************************************************/
void nvt_tx_auto_copy_mode(void)
{
//---write TX_AUTO_COPY_EN cmds---
nvt_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_check_spi_dma_tx_info(void)
{
uint8_t buf[8] = {0};
int32_t i = 0;
const int32_t retry = 200;
for (i = 0; i < retry; i++) {
//---set xdata index to EVENT BUF ADDR---
nvt_set_page(ts->mmap->SPI_DMA_TX_INFO);
//---read fw status---
buf[0] = ts->mmap->SPI_DMA_TX_INFO & 0x7F;
buf[1] = 0xFF;
CTP_SPI_READ(ts->client, buf, 2);
if (buf[1] == 0x00)
break;
usleep_range(1000, 1000);
}
if (i >= retry) {
NVT_ERR("failed, i=%d, buf[1]=0x%02X\n", i, buf[1]);
return -1;
} else {
return 0;
}
}
/*******************************************************
Description:
Novatek touchscreen eng reset cmd
function.
return:
n.a.
*******************************************************/
void nvt_eng_reset(void)
{
//---eng reset cmds to ENG_RST_ADDR---
nvt_write_addr(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_sw_reset(void)
{
//---software reset cmds to SWRST_SIF_ADDR---
nvt_write_addr(SWRST_SIF_ADDR, 0x55);
msleep(10);
}
/*******************************************************
Description:
Novatek touchscreen reset MCU then into idle mode
function.
return:
n.a.
*******************************************************/
void nvt_sw_reset_idle(void)
{
//---MCU idle cmds to SWRST_SIF_ADDR---
nvt_write_addr(SWRST_SIF_ADDR, 0xAA);
msleep(15);
}
/*******************************************************
Description:
Novatek touchscreen reset MCU (boot) function.
return:
n.a.
*******************************************************/
void nvt_bootloader_reset(void)
{
//---reset cmds to SWRST_SIF_ADDR---
nvt_write_addr(SWRST_SIF_ADDR, 0x69);
mdelay(5); //wait tBRST2FR after Bootload RST
if (SPI_RD_FAST_ADDR) {
/* disable SPI_RD_FAST */
nvt_write_addr(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_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(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_SPI_WRITE(ts->client, buf, 2);
//---read fw status---
buf[0] = EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE;
buf[1] = 0xFF;
CTP_SPI_READ(ts->client, buf, 2);
if (buf[1] == 0x00)
break;
usleep_range(10000, 10000);
}
if (i >= retry) {
NVT_ERR("failed, i=%d, buf[1]=0x%02X\n", i, buf[1]);
return -1;
} else {
return 0;
}
}
/*******************************************************
Description:
Novatek touchscreen check FW status function.
return:
Executive outcomes. 0---succeed. -1---failed.
*******************************************************/
int32_t nvt_check_fw_status(void)
{
uint8_t buf[8] = {0};
int32_t i = 0;
const int32_t retry = 50;
usleep_range(20000, 20000);
for (i = 0; i < retry; i++) {
//---set xdata index to EVENT BUF ADDR---
nvt_set_page(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_SPI_READ(ts->client, 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;
int32_t retry_max = (check_reset_state == RESET_STATE_INIT) ? 10 : 50;
//---set xdata index to EVENT BUF ADDR---
nvt_set_page(ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_RESET_COMPLETE);
while (1) {
//---read reset state---
buf[0] = EVENT_MAP_RESET_COMPLETE;
buf[1] = 0x00;
CTP_SPI_READ(ts->client, buf, 6);
if ((buf[1] >= check_reset_state) && (buf[1] <= 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, 10000);
}
return ret;
}
/*******************************************************
Description:
Novatek touchscreen get firmware related information
function.
return:
Executive outcomes. 0---success. -1---fail.
*******************************************************/
int32_t nvt_get_fw_info(void)
{
uint8_t buf[64] = {0};
uint32_t retry_count = 0;
int32_t ret = 0;
info_retry:
//---set xdata index to EVENT BUF ADDR---
nvt_set_page(ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_FWINFO);
//---read fw info---
buf[0] = EVENT_MAP_FWINFO;
CTP_SPI_READ(ts->client, buf, 39);
if ((buf[1] + buf[2]) != 0xFF) {
NVT_ERR("FW info is broken! fw_ver=0x%02X, ~fw_ver=0x%02X\n", buf[1], buf[2]);
if(retry_count < 3) {
retry_count++;
NVT_ERR("retry_count=%d\n", retry_count);
goto info_retry;
} else {
ts->fw_ver = 0;
ts->abs_x_max = TOUCH_DEFAULT_MAX_WIDTH;
ts->abs_y_max = TOUCH_DEFAULT_MAX_HEIGHT;
ts->max_button_num = TOUCH_KEY_NUM;
NVT_ERR("Set default fw_ver=%d, abs_x_max=%d, abs_y_max=%d, max_button_num=%d!\n",
ts->fw_ver, ts->abs_x_max, ts->abs_y_max, ts->max_button_num);
ret = -1;
goto out;
}
}
ts->fw_ver = buf[1];
ts->x_num = buf[3];
ts->y_num = buf[4];
ts->abs_x_max = (uint16_t)((buf[5] << 8) | buf[6]);
ts->abs_y_max = (uint16_t)((buf[7] << 8) | buf[8]);
ts->max_button_num = buf[11];
ts->nvt_pid = (uint16_t)((buf[36] << 8) | buf[35]);
if (ts->pen_support) {
ts->x_gang_num = buf[37];
ts->y_gang_num = buf[38];
}
NVT_LOG("fw_ver=0x%02X, fw_type=0x%02X, PID=0x%04X\n", ts->fw_ver, buf[14], ts->nvt_pid);
ret = 0;
out:
return ret;
}
/*******************************************************
Create Device Node (Proc Entry)
*******************************************************/
#if NVT_TOUCH_PROC
static struct proc_dir_entry *NVT_proc_entry;
#define DEVICE_NAME "NVTSPI"
/*******************************************************
Description:
Novatek touchscreen /proc/NVTSPI 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 = NULL;
int32_t ret = 0;
int32_t retries = 0;
int8_t spi_wr = 0;
uint8_t *buf;
if ((count > NVT_TRANSFER_LEN + 3) || (count < 3)) {
NVT_ERR("invalid transfer len!\n");
return -EFAULT;
}
/* allocate buffer for spi transfer */
str = (uint8_t *)kzalloc((count), GFP_KERNEL);
if(str == NULL) {
NVT_ERR("kzalloc for buf failed!\n");
ret = -ENOMEM;
goto kzalloc_failed;
}
buf = (uint8_t *)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_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 */
spi_wr = str[0] >> 7;
if ((((str[0] & 0x7F) << 8) | str[1]) > (count - 2 * sizeof(*str))) {
NVT_ERR("memcpy out-of-bounds error!\n");
ret = -ENOMEM;
goto out;
}
memcpy(buf, str+2, ((str[0] & 0x7F) << 8) | str[1]);
if (spi_wr == NVTWRITE) { //SPI write
while (retries < 20) {
ret = CTP_SPI_WRITE(ts->client, buf, ((str[0] & 0x7F) << 8) | str[1]);
if (!ret)
break;
else
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 == NVTREAD) { //SPI read
while (retries < 20) {
ret = CTP_SPI_READ(ts->client, buf, ((str[0] & 0x7F) << 8) | str[1]);
if (!ret)
break;
else
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_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/NVTSPI close function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static int32_t nvt_flash_close(struct inode *inode, struct file *file)
{
struct nvt_flash_data *dev = file->private_data;
if (dev)
kfree(dev);
return 0;
}
static const struct proc_ops nvt_flash_fops = {
.proc_open = nvt_flash_open,
.proc_release = nvt_flash_close,
.proc_read = nvt_flash_read,
};
/*******************************************************
Description:
Novatek touchscreen /proc/NVTSPI 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/NVTSPI 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 int32_t nvt_parse_dt(struct device *dev)
{
struct device_node *np = dev->of_node;
int32_t ret = 0;
#if NVT_TOUCH_SUPPORT_HW_RST
ts->reset_gpio = of_get_named_gpio_flags(np, "novatek,reset-gpio", 0, &ts->reset_flags);
NVT_LOG("novatek,reset-gpio=%d\n", ts->reset_gpio);
#endif
ts->irq_gpio = of_get_named_gpio_flags(np, "novatek,irq-gpio", 0, &ts->irq_flags);
NVT_LOG("novatek,irq-gpio=%d\n", ts->irq_gpio);
ts->pen_support = of_property_read_bool(np, "novatek,pen-support");
NVT_LOG("novatek,pen-support=%d\n", ts->pen_support);
ts->stylus_resol_double = of_property_read_bool(np, "novatek,stylus-resol-double");
NVT_LOG("novatek,stylus-resol-double=%d\n", ts->stylus_resol_double);
ret = of_property_read_u32(np, "novatek,swrst-n8-addr", &SWRST_SIF_ADDR);
if (ret) {
NVT_ERR("error reading novatek,swrst-n8-addr. ret=%d\n", ret);
return ret;
} else {
NVT_LOG("SWRST_SIF_ADDR=0x%06X\n", SWRST_SIF_ADDR);
}
ret = of_property_read_u32(np, "novatek,spi-rd-fast-addr", &SPI_RD_FAST_ADDR);
if (ret) {
NVT_LOG("not support novatek,spi-rd-fast-addr\n");
SPI_RD_FAST_ADDR = 0;
ret = 0;
} else {
NVT_LOG("SPI_RD_FAST_ADDR=0x%06X\n", SPI_RD_FAST_ADDR);
}
return ret;
}
#else
static int32_t 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;
return 0;
}
#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_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_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_LOG("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, reload fw */
nvt_update_firmware(BOOT_UPDATE_FIRMWARE_NAME);
mutex_unlock(&ts->lock);
/* update interrupt timer */
irq_timer = jiffies;
/* update esd_retry counter */
esd_retry++;
}
queue_delayed_work(nvt_esd_check_wq, &nvt_esd_check_work,
msecs_to_jiffies(NVT_TOUCH_ESD_CHECK_PERIOD));
}
#endif /* #if NVT_TOUCH_ESD_PROTECT */
#define PEN_DATA_LEN 14
#if CHECK_PEN_DATA_CHECKSUM
static int32_t nvt_ts_pen_data_checksum(uint8_t *buf, uint8_t length)
{
uint8_t checksum = 0;
int32_t i = 0;
// Calculate checksum
for (i = 0; i < length - 1; i++) {
checksum += buf[i];
}
checksum = (~checksum + 1);
// Compare ckecksum and dump fail data
if (checksum != buf[length - 1]) {
NVT_ERR("pen packet checksum not match. (buf[%d]=0x%02X, checksum=0x%02X)\n",
length - 1, buf[length - 1], checksum);
//--- dump pen buf ---
for (i = 0; i < length; i++) {
printk("%02X ", buf[i]);
}
printk("\n");
return -1;
}
return 0;
}
#endif // #if CHECK_PEN_DATA_CHECKSUM
#if NVT_TOUCH_WDT_RECOVERY
static uint8_t recovery_cnt = 0;
static uint8_t nvt_wdt_fw_recovery(uint8_t *point_data)
{
uint32_t recovery_cnt_max = 10;
uint8_t recovery_enable = false;
uint8_t i = 0;
recovery_cnt++;
/* check pattern */
for (i=1 ; i<7 ; i++) {
if ((point_data[i] != 0xFD) && (point_data[i] != 0xFE)) {
recovery_cnt = 0;
break;
}
}
if (recovery_cnt > recovery_cnt_max){
recovery_enable = true;
recovery_cnt = 0;
}
return recovery_enable;
}
void nvt_read_fw_history(uint32_t fw_history_addr)
{
uint8_t i = 0;
uint8_t buf[65];
char str[128];
if (fw_history_addr == 0)
return;
nvt_set_page(fw_history_addr);
buf[0] = (uint8_t) (fw_history_addr & 0x7F);
CTP_SPI_READ(ts->client, buf, 64+1); //read 64bytes history
//print all data
NVT_LOG("fw history 0x%x: \n", fw_history_addr);
for (i = 0; i < 4; i++) {
snprintf(str, sizeof(str),
"%02X %02X %02X %02X %02X %02X %02X %02X "
"%02X %02X %02X %02X %02X %02X %02X %02X\n",
buf[1+i*16], buf[2+i*16], buf[3+i*16], buf[4+i*16],
buf[5+i*16], buf[6+i*16], buf[7+i*16], buf[8+i*16],
buf[9+i*16], buf[10+i*16], buf[11+i*16], buf[12+i*16],
buf[13+i*16], buf[14+i*16], buf[15+i*16], buf[16+i*16]);
NVT_LOG("%s", str);
}
nvt_set_page(ts->mmap->EVENT_BUF_ADDR);
}
#endif /* #if NVT_TOUCH_WDT_RECOVERY */
#if POINT_DATA_CHECKSUM
static int32_t nvt_ts_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("i2c/spi 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 -1;
}
return 0;
}
#endif /* POINT_DATA_CHECKSUM */
#define POINT_DATA_LEN 65
/*******************************************************
Description:
Novatek touchscreen work function.
return:
n.a.
*******************************************************/
static irqreturn_t nvt_ts_work_func(int irq, void *data)
{
int32_t ret = -1;
uint8_t point_data[POINT_DATA_LEN + PEN_DATA_LEN + 1 + DUMMY_BYTES] = {0};
uint32_t position = 0;
uint32_t input_x = 0;
uint32_t input_y = 0;
uint32_t input_w = 0;
uint32_t input_p = 0;
uint8_t input_id = 0;
#if MT_PROTOCOL_B
uint8_t press_id[TOUCH_MAX_FINGER_NUM] = {0};
#endif /* MT_PROTOCOL_B */
int32_t i = 0;
int32_t finger_cnt = 0;
uint8_t pen_format_id = 0;
uint32_t pen_x = 0;
uint32_t pen_y = 0;
uint32_t pen_pressure = 0;
uint32_t pen_distance = 0;
int8_t pen_tilt_x = 0;
int8_t pen_tilt_y = 0;
uint32_t pen_btn1 = 0;
uint32_t pen_btn2 = 0;
uint32_t pen_battery = 0;
#if WAKEUP_GESTURE
if (bTouchIsAwake == 0) {
pm_wakeup_event(&ts->input_dev->dev, 5000);
}
#endif
mutex_lock(&ts->lock);
if (ts->pen_support)
ret = CTP_SPI_READ(ts->client, point_data, POINT_DATA_LEN + PEN_DATA_LEN + 1);
else
ret = CTP_SPI_READ(ts->client, point_data, POINT_DATA_LEN + 1);
if (ret < 0) {
NVT_ERR("CTP_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_TOUCH_WDT_RECOVERY
/* ESD protect by WDT */
if (nvt_wdt_fw_recovery(point_data)) {
NVT_ERR("Recover for fw reset, %02X\n", point_data[1]);
if (point_data[1] == 0xFE) {
nvt_sw_reset_idle();
}
nvt_read_fw_history(ts->mmap->MMAP_HISTORY_EVENT0);
nvt_read_fw_history(ts->mmap->MMAP_HISTORY_EVENT1);
nvt_update_firmware(BOOT_UPDATE_FIRMWARE_NAME);
goto XFER_ERROR;
}
#endif /* #if NVT_TOUCH_WDT_RECOVERY */
/* ESD protect by FW handshake */
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 POINT_DATA_CHECKSUM
if (POINT_DATA_LEN >= POINT_DATA_CHECKSUM_LEN) {
ret = nvt_ts_point_data_checksum(point_data, POINT_DATA_CHECKSUM_LEN);
if (ret) {
goto XFER_ERROR;
}
}
#endif /* POINT_DATA_CHECKSUM */
#if WAKEUP_GESTURE
if (bTouchIsAwake == 0) {
input_id = (uint8_t)(point_data[1] >> 3);
nvt_ts_wakeup_gesture_report(input_id, point_data);
mutex_unlock(&ts->lock);
return IRQ_HANDLED;
}
#endif
finger_cnt = 0;
for (i = 0; i < ts->max_touch_num; i++) {
position = 1 + 6 * i;
input_id = (uint8_t)(point_data[position + 0] >> 3);
if ((input_id == 0) || (input_id > ts->max_touch_num))
continue;
if (((point_data[position] & 0x07) == 0x01) || ((point_data[position] & 0x07) == 0x02)) { //finger down (enter & moving)
#if NVT_TOUCH_ESD_PROTECT
/* update interrupt timer */
irq_timer = jiffies;
#endif /* #if NVT_TOUCH_ESD_PROTECT */
input_x = (uint32_t)(point_data[position + 1] << 4) + (uint32_t) (point_data[position + 3] >> 4);
input_y = (uint32_t)(point_data[position + 2] << 4) + (uint32_t) (point_data[position + 3] & 0x0F);
if ((input_x < 0) || (input_y < 0))
continue;
if ((input_x > ts->abs_x_max) || (input_y > ts->abs_y_max))
continue;
input_w = (uint32_t)(point_data[position + 4]);
if (input_w == 0)
input_w = 1;
if (i < 2) {
input_p = (uint32_t)(point_data[position + 5]) + (uint32_t)(point_data[i + 63] << 8);
if (input_p > TOUCH_FORCE_NUM)
input_p = TOUCH_FORCE_NUM;
} else {
input_p = (uint32_t)(point_data[position + 5]);
}
if (input_p == 0)
input_p = 1;
#if MT_PROTOCOL_B
press_id[input_id - 1] = 1;
input_mt_slot(ts->input_dev, input_id - 1);
input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true);
#else /* MT_PROTOCOL_B */
input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, input_id - 1);
input_report_key(ts->input_dev, BTN_TOUCH, 1);
#endif /* MT_PROTOCOL_B */
input_report_abs(ts->input_dev, ABS_MT_POSITION_X, input_x);
input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, input_y);
input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w);
input_report_abs(ts->input_dev, ABS_MT_PRESSURE, input_p);
#if MT_PROTOCOL_B
#else /* MT_PROTOCOL_B */
input_mt_sync(ts->input_dev);
#endif /* MT_PROTOCOL_B */
finger_cnt++;
}
}
#if MT_PROTOCOL_B
for (i = 0; i < ts->max_touch_num; i++) {
if (press_id[i] != 1) {
input_mt_slot(ts->input_dev, i);
input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0);
input_report_abs(ts->input_dev, ABS_MT_PRESSURE, 0);
input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, false);
}
}
input_report_key(ts->input_dev, BTN_TOUCH, (finger_cnt > 0));
#else /* MT_PROTOCOL_B */
if (finger_cnt == 0) {
input_report_key(ts->input_dev, BTN_TOUCH, 0);
input_mt_sync(ts->input_dev);
}
#endif /* MT_PROTOCOL_B */
#if TOUCH_KEY_NUM > 0
if (point_data[61] == 0xF8) {
#if NVT_TOUCH_ESD_PROTECT
/* update interrupt timer */
irq_timer = jiffies;
#endif /* #if NVT_TOUCH_ESD_PROTECT */
for (i = 0; i < ts->max_button_num; i++) {
input_report_key(ts->input_dev, touch_key_array[i], ((point_data[62] >> i) & 0x01));
}
} else {
for (i = 0; i < ts->max_button_num; i++) {
input_report_key(ts->input_dev, touch_key_array[i], 0);
}
}
#endif
input_sync(ts->input_dev);
if (ts->pen_support) {
/*
//--- dump pen buf ---
printk("%02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n",
point_data[66], point_data[67], point_data[68], point_data[69], point_data[70],
point_data[71], point_data[72], point_data[73], point_data[74], point_data[75],
point_data[76], point_data[77], point_data[78], point_data[79]);
*/
#if CHECK_PEN_DATA_CHECKSUM
if (nvt_ts_pen_data_checksum(&point_data[66], PEN_DATA_LEN)) {
// pen data packet checksum not match, skip it
goto XFER_ERROR;
}
#endif // #if CHECK_PEN_DATA_CHECKSUM
// parse and handle pen report
pen_format_id = point_data[66];
if (pen_format_id != 0xFF) {
if (pen_format_id == 0x01) {
// report pen data
pen_x = (uint32_t)(point_data[67] << 8) + (uint32_t)(point_data[68]);
pen_y = (uint32_t)(point_data[69] << 8) + (uint32_t)(point_data[70]);
pen_pressure = (uint32_t)(point_data[71] << 8) + (uint32_t)(point_data[72]);
pen_tilt_x = (int32_t)point_data[73];
pen_tilt_y = (int32_t)point_data[74];
pen_distance = (uint32_t)(point_data[75] << 8) + (uint32_t)(point_data[76]);
pen_btn1 = (uint32_t)(point_data[77] & 0x01);
pen_btn2 = (uint32_t)((point_data[77] >> 1) & 0x01);
pen_battery = (uint32_t)point_data[78];
// printk("x=%d,y=%d,p=%d,tx=%d,ty=%d,d=%d,b1=%d,b2=%d,bat=%d\n", pen_x, pen_y, pen_pressure,
// pen_tilt_x, pen_tilt_y, pen_distance, pen_btn1, pen_btn2, pen_battery);
input_report_abs(ts->pen_input_dev, ABS_X, pen_x);
input_report_abs(ts->pen_input_dev, ABS_Y, pen_y);
input_report_abs(ts->pen_input_dev, ABS_PRESSURE, pen_pressure);
input_report_key(ts->pen_input_dev, BTN_TOUCH, !!pen_pressure);
input_report_abs(ts->pen_input_dev, ABS_TILT_X, pen_tilt_x);
input_report_abs(ts->pen_input_dev, ABS_TILT_Y, pen_tilt_y);
input_report_abs(ts->pen_input_dev, ABS_DISTANCE, pen_distance);
input_report_key(ts->pen_input_dev, BTN_TOOL_PEN, !!pen_distance || !!pen_pressure);
input_report_key(ts->pen_input_dev, BTN_STYLUS, pen_btn1);
input_report_key(ts->pen_input_dev, BTN_STYLUS2, pen_btn2);
// TBD: pen battery event report
// NVT_LOG("pen_battery=%d\n", pen_battery);
} else if (pen_format_id == 0xF0) {
// report Pen ID
} else {
NVT_ERR("Unknown pen format id!\n");
goto XFER_ERROR;
}
} else { // pen_format_id = 0xFF, i.e. no pen present
input_report_abs(ts->pen_input_dev, ABS_X, 0);
input_report_abs(ts->pen_input_dev, ABS_Y, 0);
input_report_abs(ts->pen_input_dev, ABS_PRESSURE, 0);
input_report_abs(ts->pen_input_dev, ABS_TILT_X, 0);
input_report_abs(ts->pen_input_dev, ABS_TILT_Y, 0);
input_report_abs(ts->pen_input_dev, ABS_DISTANCE, 0);
input_report_key(ts->pen_input_dev, BTN_TOUCH, 0);
input_report_key(ts->pen_input_dev, BTN_TOOL_PEN, 0);
input_report_key(ts->pen_input_dev, BTN_STYLUS, 0);
input_report_key(ts->pen_input_dev, BTN_STYLUS2, 0);
}
input_sync(ts->pen_input_dev);
} /* if (ts->pen_support) */
XFER_ERROR:
mutex_unlock(&ts->lock);
return IRQ_HANDLED;
}
/*******************************************************
Description:
Novatek touchscreen check 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;
//---Check for 5 times---
for (retry = 5; retry > 0; retry--) {
nvt_bootloader_reset();
nvt_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;
CTP_SPI_READ(ts->client, 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]);
// 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->hw_crc = trim_id_table[list].hwinfo->hw_crc;
ret = 0;
goto out;
} else {
ts->mmap = NULL;
ret = -1;
}
}
msleep(10);
}
out:
return ret;
}
#ifdef CONFIG_DRM_MEDIATEK
static int nvt_tp_power_on_reinit(void)
{
int32_t ret;
pr_info("%s is called\n", __func__);
/* do esd recovery, bootloader reset */
ret = nvt_ts_suspend(&ts->client->dev);
if (ret) {
pr_info("%s is called suspend %d\n", __func__, ret);
return ret;
}
ret = nvt_ts_resume(&ts->client->dev);
if (ret)
pr_info("%s is called resume %d\n", __func__, ret);
return ret;
}
#endif
/*******************************************************
Description:
Novatek touchscreen driver probe function.
return:
Executive outcomes. 0---succeed. negative---failed
*******************************************************/
static int32_t nvt_ts_probe(struct spi_device *client)
{
int32_t ret = 0;
#if ((TOUCH_KEY_NUM > 0) || WAKEUP_GESTURE)
int32_t retry = 0;
#endif
#ifdef CONFIG_DRM_MEDIATEK
void **retval = NULL;
#endif
NVT_LOG("start\n");
ts = (struct nvt_ts_data *)kzalloc(sizeof(struct nvt_ts_data), GFP_KERNEL);
if (ts == NULL) {
NVT_ERR("failed to allocated memory for nvt ts data\n");
return -ENOMEM;
}
ts->xbuf = (uint8_t *)kzalloc(NVT_XBUF_LEN, GFP_KERNEL);
if (ts->xbuf == NULL) {
NVT_ERR("kzalloc for xbuf failed!\n");
ret = -ENOMEM;
goto err_malloc_xbuf;
}
ts->rbuf = (uint8_t *)kzalloc(NVT_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;
}
#ifdef CONFIG_MTK_SPI
/* old usage of MTK spi API */
memcpy(&ts->spi_ctrl, &spi_ctrdata, sizeof(struct mt_chip_conf));
ts->client->controller_data = (void *)&ts->spi_ctrl;
#endif
#ifdef CONFIG_SPI_MT65XX
/* new usage of MTK spi API */
memcpy(&ts->spi_ctrl, &spi_ctrdata, sizeof(struct mtk_chip_config));
ts->client->controller_data = (void *)&ts->spi_ctrl;
#endif
NVT_LOG("mode=%d, max_speed_hz=%d\n", ts->client->mode, ts->client->max_speed_hz);
//---parse dts---
ret = nvt_parse_dt(&client->dev);
if (ret) {
NVT_ERR("parse dt error\n");
goto err_spi_setup;
}
//---request and config GPIOs---
ret = nvt_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_eng_reset();
#if NVT_TOUCH_SUPPORT_HW_RST
gpio_set_value(ts->reset_gpio, 1);
#endif
// need 10ms delay after POR(power on reset)
msleep(10);
//---check chip version trim---
ret = nvt_ts_check_chip_ver_trim(CHIP_VER_TRIM_ADDR);
if (ret) {
NVT_LOG("try to check from old chip ver trim address\n");
ret = nvt_ts_check_chip_ver_trim(CHIP_VER_TRIM_OLD_ADDR);
if (ret) {
NVT_ERR("chip is not identified\n");
ret = -EINVAL;
goto err_chipvertrim_failed;
}
}
ts->abs_x_max = TOUCH_DEFAULT_MAX_WIDTH;
ts->abs_y_max = 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 = TOUCH_MAX_FINGER_NUM;
#if TOUCH_KEY_NUM > 0
ts->max_button_num = TOUCH_KEY_NUM;
#endif
ts->int_trigger_type = INT_TRIGGER_TYPE;
//---set input device info.---
ts->input_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
ts->input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
ts->input_dev->propbit[0] = BIT(INPUT_PROP_DIRECT);
#if MT_PROTOCOL_B
input_mt_init_slots(ts->input_dev, ts->max_touch_num, 0);
#endif
input_set_abs_params(ts->input_dev, ABS_MT_PRESSURE, 0, TOUCH_FORCE_NUM, 0, 0); //pressure = TOUCH_FORCE_NUM
#if TOUCH_MAX_FINGER_NUM > 1
input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0); //area = 255
input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, 0, ts->abs_x_max, 0, 0);
input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, 0, ts->abs_y_max, 0, 0);
#if MT_PROTOCOL_B
// no need to set ABS_MT_TRACKING_ID, input_mt_init_slots() already set it
#else
input_set_abs_params(ts->input_dev, ABS_MT_TRACKING_ID, 0, ts->max_touch_num, 0, 0);
#endif //MT_PROTOCOL_B
#endif //TOUCH_MAX_FINGER_NUM > 1
#if TOUCH_KEY_NUM > 0
for (retry = 0; retry < ts->max_button_num; retry++) {
input_set_capability(ts->input_dev, EV_KEY, touch_key_array[retry]);
}
#endif
#if WAKEUP_GESTURE
for (retry = 0; retry < (sizeof(gesture_key_array) / sizeof(gesture_key_array[0])); retry++) {
input_set_capability(ts->input_dev, EV_KEY, gesture_key_array[retry]);
}
#endif
sprintf(ts->phys, "input/ts");
ts->input_dev->name = NVT_TS_NAME;
ts->input_dev->phys = ts->phys;
ts->input_dev->id.bustype = BUS_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->stylus_resol_double) {
input_set_abs_params(ts->pen_input_dev, ABS_X, 0, ts->abs_x_max * 2, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_Y, 0, ts->abs_y_max * 2, 0, 0);
} else {
input_set_abs_params(ts->pen_input_dev, ABS_X, 0, ts->abs_x_max, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_Y, 0, ts->abs_y_max, 0, 0);
}
input_set_abs_params(ts->pen_input_dev, ABS_PRESSURE, 0, PEN_PRESSURE_MAX, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_DISTANCE, 0, PEN_DISTANCE_MAX, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_TILT_X, PEN_TILT_MIN, PEN_TILT_MAX, 0, 0);
input_set_abs_params(ts->pen_input_dev, ABS_TILT_Y, PEN_TILT_MIN, PEN_TILT_MAX, 0, 0);
sprintf(ts->pen_phys, "input/pen");
ts->pen_input_dev->name = NVT_PEN_NAME;
ts->pen_input_dev->phys = ts->pen_phys;
ts->pen_input_dev->id.bustype = BUS_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_ts_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_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_worker = kthread_create_worker(0, "nvt_fwu_worker");
if (!nvt_fwu_worker) {
NVT_ERR("nvt_fwu_worker create kthread failed\n");
ret = -ENOMEM;
goto err_create_nvt_fwu_worker_failed;
}
kthread_init_delayed_work(&ts->nvt_fwu_dw, Boot_Update_Firmware);
kthread_queue_delayed_work(nvt_fwu_worker, &ts->nvt_fwu_dw, msecs_to_jiffies(14000));
NVT_LOG("start kthread_queue_delayed_work nt36672c\n");
#endif
NVT_LOG("NVT_TOUCH_ESD_PROTECT is %d\n", NVT_TOUCH_ESD_PROTECT);
#if NVT_TOUCH_ESD_PROTECT
INIT_DELAYED_WORK(&nvt_esd_check_work, nvt_esd_check_func);
nvt_esd_check_wq = alloc_workqueue("nvt_esd_check_wq", WQ_MEM_RECLAIM, 1);
if (!nvt_esd_check_wq) {
NVT_ERR("nvt_esd_check_wq create workqueue failed\n");
ret = -ENOMEM;
goto err_create_nvt_esd_check_wq_failed;
}
queue_delayed_work(nvt_esd_check_wq, &nvt_esd_check_work,
msecs_to_jiffies(NVT_TOUCH_ESD_CHECK_PERIOD));
#endif /* #if NVT_TOUCH_ESD_PROTECT */
//---set device node---
#if NVT_TOUCH_PROC
ret = nvt_flash_proc_init();
if (ret != 0) {
NVT_ERR("nvt flash proc init failed. ret=%d\n", ret);
goto err_flash_proc_init_failed;
}
#endif
#if NVT_TOUCH_EXT_PROC
ret = nvt_extra_proc_init();
if (ret != 0) {
NVT_ERR("nvt extra proc init failed. ret=%d\n", ret);
goto err_extra_proc_init_failed;
}
#endif
#if NVT_TOUCH_MP
ret = nvt_mp_proc_init();
if (ret != 0) {
NVT_ERR("nvt mp proc init failed. ret=%d\n", ret);
goto err_mp_proc_init_failed;
}
#endif
#if IS_ENABLED(CONFIG_DRM_MEDIATEK)
ts->disp_notifier.notifier_call = nvt_disp_notifier_callback;
ret = mtk_disp_notifier_register("NVT Touch", &ts->disp_notifier);
if (ret) {
NVT_ERR("Failed to register disp notifier client:%d", ret);
goto err_register_disp_notif_failed;
}
#endif
bTouchIsAwake = 1;
NVT_LOG("end\n");
#ifdef CONFIG_DRM_MEDIATEK
pr_info("%s, disp notifier register func!\n", __func__);
if (mtk_panel_tch_handle_init()) {
retval = mtk_panel_tch_handle_init();
*retval = (void *)nvt_tp_power_on_reinit;
}
#endif
nvt_irq_enable(true);
return 0;
#if IS_ENABLED(CONFIG_DRM_MEDIATEK)
err_register_disp_notif_failed:
if (mtk_disp_notifier_unregister(&ts->disp_notifier))
NVT_ERR("Error occurred while unregistering disp_notifier.\n");
#endif
#if NVT_TOUCH_MP
nvt_mp_proc_deinit();
err_mp_proc_init_failed:
#endif
#if NVT_TOUCH_EXT_PROC
nvt_extra_proc_deinit();
err_extra_proc_init_failed:
#endif
#if NVT_TOUCH_PROC
nvt_flash_proc_deinit();
err_flash_proc_init_failed:
#endif
#if NVT_TOUCH_ESD_PROTECT
if (nvt_esd_check_wq) {
cancel_delayed_work_sync(&nvt_esd_check_work);
destroy_workqueue(nvt_esd_check_wq);
nvt_esd_check_wq = NULL;
}
err_create_nvt_esd_check_wq_failed:
#endif
#if BOOT_UPDATE_FIRMWARE
if (nvt_fwu_worker) {
kthread_cancel_delayed_work_sync(&ts->nvt_fwu_dw);
kthread_destroy_worker(nvt_fwu_worker);
NVT_LOG("kthread_destroy_worker err_create nt36672c\n");
nvt_fwu_worker = NULL;
}
err_create_nvt_fwu_worker_failed:
#endif
#if WAKEUP_GESTURE
device_init_wakeup(&ts->input_dev->dev, 0);
#endif
free_irq(client->irq, ts);
err_int_request_failed:
if (ts->pen_support) {
input_unregister_device(ts->pen_input_dev);
ts->pen_input_dev = NULL;
}
err_pen_input_register_device_failed:
if (ts->pen_support) {
if (ts->pen_input_dev) {
input_free_device(ts->pen_input_dev);
ts->pen_input_dev = NULL;
}
}
err_pen_input_dev_alloc_failed:
input_unregister_device(ts->input_dev);
ts->input_dev = NULL;
err_input_register_device_failed:
if (ts->input_dev) {
input_free_device(ts->input_dev);
ts->input_dev = NULL;
}
err_input_dev_alloc_failed:
err_chipvertrim_failed:
mutex_destroy(&ts->xbuf_lock);
mutex_destroy(&ts->lock);
nvt_gpio_deconfig(ts);
err_gpio_config_failed:
err_spi_setup:
err_ckeck_full_duplex:
spi_set_drvdata(client, NULL);
if (ts->rbuf) {
kfree(ts->rbuf);
ts->rbuf = NULL;
}
err_malloc_rbuf:
if (ts->xbuf) {
kfree(ts->xbuf);
ts->xbuf = NULL;
}
err_malloc_xbuf:
if (ts) {
kfree(ts);
ts = NULL;
}
return ret;
}
/*******************************************************
Description:
Novatek touchscreen driver release function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static int32_t nvt_ts_remove(struct spi_device *client)
{
NVT_LOG("Removing driver...\n");
#if IS_ENABLED(CONFIG_DRM_MEDIATEK)
if (mtk_disp_notifier_unregister(&ts->disp_notifier))
NVT_ERR("Error occurred while unregistering disp_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_worker) {
kthread_cancel_delayed_work_sync(&ts->nvt_fwu_dw);
kthread_destroy_worker(nvt_fwu_worker);
NVT_LOG("kthread_destroy_worker shutdown nt36672c\n");
nvt_fwu_worker = NULL;
}
#endif
#if WAKEUP_GESTURE
device_init_wakeup(&ts->input_dev->dev, 0);
#endif
nvt_irq_enable(false);
free_irq(client->irq, ts);
mutex_destroy(&ts->xbuf_lock);
mutex_destroy(&ts->lock);
nvt_gpio_deconfig(ts);
if (ts->pen_support) {
if (ts->pen_input_dev) {
input_unregister_device(ts->pen_input_dev);
ts->pen_input_dev = NULL;
}
}
if (ts->input_dev) {
input_unregister_device(ts->input_dev);
ts->input_dev = NULL;
}
spi_set_drvdata(client, NULL);
if (ts->xbuf) {
kfree(ts->xbuf);
ts->xbuf = NULL;
}
if (ts) {
kfree(ts);
ts = NULL;
}
return 0;
}
static void nvt_ts_shutdown(struct spi_device *client)
{
NVT_LOG("Shutdown driver...\n");
nvt_irq_enable(false);
#if IS_ENABLED(CONFIG_DRM_MEDIATEK)
if (mtk_disp_notifier_unregister(&ts->disp_notifier))
NVT_ERR("Error occurred while unregistering disp_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_worker) {
kthread_cancel_delayed_work_sync(&ts->nvt_fwu_dw);
kthread_destroy_worker(nvt_fwu_worker);
nvt_fwu_worker = NULL;
}
#endif
#if WAKEUP_GESTURE
device_init_wakeup(&ts->input_dev->dev, 0);
#endif
}
/*******************************************************
Description:
Novatek touchscreen driver suspend function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static int32_t nvt_ts_suspend(struct device *dev)
{
uint8_t buf[4] = {0};
#if MT_PROTOCOL_B
uint32_t i = 0;
#endif
if (!bTouchIsAwake) {
NVT_LOG("Touch is already suspend\n");
return 0;
}
#if !WAKEUP_GESTURE
nvt_irq_enable(false);
#endif
#if NVT_TOUCH_ESD_PROTECT
NVT_LOG("cancel delayed work sync\n");
cancel_delayed_work_sync(&nvt_esd_check_work);
nvt_esd_check_enable(false);
#endif /* #if NVT_TOUCH_ESD_PROTECT */
mutex_lock(&ts->lock);
NVT_LOG("start\n");
bTouchIsAwake = 0;
#if WAKEUP_GESTURE
//---write command to enter "wakeup gesture mode"---
buf[0] = EVENT_MAP_HOST_CMD;
buf[1] = 0x13;
CTP_SPI_WRITE(ts->client, 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_SPI_WRITE(ts->client, buf, 2);
#endif // WAKEUP_GESTURE
mutex_unlock(&ts->lock);
/* release all touches */
#if MT_PROTOCOL_B
for (i = 0; i < ts->max_touch_num; i++) {
input_mt_slot(ts->input_dev, i);
input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0);
input_report_abs(ts->input_dev, ABS_MT_PRESSURE, 0);
input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, 0);
}
#endif
input_report_key(ts->input_dev, BTN_TOUCH, 0);
#if !MT_PROTOCOL_B
input_mt_sync(ts->input_dev);
#endif
input_sync(ts->input_dev);
/* release pen event */
if (ts->pen_support) {
input_report_abs(ts->pen_input_dev, ABS_X, 0);
input_report_abs(ts->pen_input_dev, ABS_Y, 0);
input_report_abs(ts->pen_input_dev, ABS_PRESSURE, 0);
input_report_abs(ts->pen_input_dev, ABS_TILT_X, 0);
input_report_abs(ts->pen_input_dev, ABS_TILT_Y, 0);
input_report_abs(ts->pen_input_dev, ABS_DISTANCE, 0);
input_report_key(ts->pen_input_dev, BTN_TOUCH, 0);
input_report_key(ts->pen_input_dev, BTN_TOOL_PEN, 0);
input_report_key(ts->pen_input_dev, BTN_STYLUS, 0);
input_report_key(ts->pen_input_dev, BTN_STYLUS2, 0);
input_sync(ts->pen_input_dev);
}
msleep(50);
NVT_LOG("end\n");
return 0;
}
/*******************************************************
Description:
Novatek touchscreen driver resume function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static int32_t nvt_ts_resume(struct device *dev)
{
if (bTouchIsAwake) {
NVT_LOG("Touch is already resume\n");
return 0;
}
mutex_lock(&ts->lock);
NVT_LOG("start\n");
// please make sure display reset(RESX) sequence and mipi dsi cmds sent before this
#if NVT_TOUCH_SUPPORT_HW_RST
gpio_set_value(ts->reset_gpio, 1);
#endif
if (nvt_update_firmware(BOOT_UPDATE_FIRMWARE_NAME)) {
NVT_ERR("download firmware failed, ignore check fw state\n");
} else {
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 IS_ENABLED(CONFIG_DRM_MEDIATEK)
/**
* gt9896s_ts_disp_notifier_callback - mtk display notifier callback
* Called by kernel during framebuffer blanck/unblank phrase
*/
static int nvt_disp_notifier_callback(struct notifier_block *nb,
unsigned long value, void *v)
{
struct nvt_ts_data *ts = container_of(nb, struct nvt_ts_data, disp_notifier);
int *data = (int *)v;
if (ts && v) {
NVT_LOG("%s IN", __func__);
if (value == MTK_DISP_EARLY_EVENT_BLANK) {
if (*data == MTK_DISP_BLANK_POWERDOWN) {
nvt_ts_suspend(&ts->client->dev);
}
} else if (value == MTK_DISP_EVENT_BLANK) {
if (*data == MTK_DISP_BLANK_UNBLANK) {
nvt_ts_resume(&ts->client->dev);
}
}
NVT_LOG("%s OUT", __func__);
} else {
NVT_LOG("NT36672 touch IC can not suspend or resume");
return -1;
}
return 0;
}
#endif
static const struct spi_device_id nvt_ts_id[] = {
{ NVT_SPI_NAME, 0 },
{ }
};
#ifdef CONFIG_OF
static const struct of_device_id nvt_match_table[] = {
{ .compatible = "novatek,NVT-ts-spi",},
{ },
};
#endif
static struct spi_driver nvt_spi_driver = {
.probe = nvt_ts_probe,
.remove = nvt_ts_remove,
.shutdown = nvt_ts_shutdown,
.id_table = nvt_ts_id,
.driver = {
.name = NVT_SPI_NAME,
.owner = THIS_MODULE,
#ifdef CONFIG_OF
.of_match_table = nvt_match_table,
#endif
},
};
/*******************************************************
Description:
Driver Install function.
return:
Executive Outcomes. 0---succeed. not 0---failed.
********************************************************/
static int32_t __init nvt_driver_init(void)
{
int32_t ret = 0;
NVT_LOG("start\n");
//---add 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_driver_exit(void)
{
spi_unregister_driver(&nvt_spi_driver);
}
//late_initcall(nvt_driver_init);
module_init(nvt_driver_init);
module_exit(nvt_driver_exit);
MODULE_DESCRIPTION("Novatek Touchscreen Driver");
MODULE_LICENSE("GPL");
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