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kernel_samsung_a34x-permissive/drivers/input/touchscreen/nt36572_common/nt36xxx.c
Fede2782 c05564c4d8
Import A346BXXU1AWB9 kernel source 
Android 13
2024-04-28 15:49:01 +02:00

1937 lines
46 KiB
C
Executable file
Raw Blame History

/*
* Copyright (C) 2010 - 2017 Novatek, Inc.
*
* $Revision: 23179 $
* $Date: 2018-02-12 16:37:16 +0800 (周一, 12 二月 2018) $
*
* 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/delay.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
#include <linux/input/mt.h>
#ifdef CONFIG_PM_WAKELOCKS
#include <linux/pm_wakeup.h>
#else
#include <linux/wakelock.h>
#endif
#include <linux/of.h>
#include <linux/of_irq.h>
#include <uapi/linux/sched/types.h>
#include <linux/sched.h>
#include <linux/kthread.h>
#include "tpd.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;
uint8_t esd_retry_max = 5;
#endif /* #if NVT_TOUCH_ESD_PROTECT */
#ifdef CONFIG_MTK_I2C_EXTENSION
#if I2C_DMA_SUPPORT
#include <linux/dma-mapping.h>
static uint8_t *gpDMABuf_va = NULL;
static dma_addr_t gpDMABuf_pa = 0;
#endif
#endif
#if NVT_TOUCH_EXT_PROC
extern int32_t nvt_extra_proc_init(void);
#endif
#if NVT_TOUCH_MP
extern int32_t nvt_mp_proc_init(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 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;
static int tpd_flag = 0;
static struct task_struct *thread = NULL;
static DECLARE_WAIT_QUEUE_HEAD(waiter);
#ifdef CONFIG_MTK_I2C_EXTENSION
#if I2C_DMA_SUPPORT
int32_t i2c_dma_read(struct i2c_client *client, uint16_t addr, uint8_t offset, uint8_t *rxbuf, uint16_t len)
{
uint8_t buf[2] = {offset,0};
int32_t ret;
int32_t retries = 0;
struct i2c_msg msg[2] = {
{
.addr = (addr & I2C_MASK_FLAG),
.flags = 0,
.buf = buf,
.len = 1,
.timing = client->timing
},
{
.addr = (addr & I2C_MASK_FLAG),
.ext_flag = (client->ext_flag | I2C_ENEXT_FLAG | I2C_DMA_FLAG),
.flags = I2C_M_RD,
.buf = (uint8_t*)gpDMABuf_pa,
.len = len,
.timing = client->timing
},
};
if (rxbuf == NULL) {
NVT_ERR("rxbuf is NULL!\n");
return -ENOMEM;
}
for (retries = 0; retries < 20; ++retries) {
ret = i2c_transfer(client->adapter, &msg[0], 2);
if (ret < 0) {
continue;
}
memcpy(rxbuf, gpDMABuf_va, len);
return ret;
}
NVT_ERR("Dma I2C Read Error: 0x%04X, %d byte(s), err-code: %d", addr, len, ret);
return ret;
}
int32_t i2c_dma_write(struct i2c_client *client, uint16_t addr, uint8_t offset, uint8_t *txbuf, uint16_t len)
{
uint8_t *wr_buf = gpDMABuf_va;
int32_t ret = -1;
int32_t retries = 0;
struct i2c_msg msg = {
.addr = (addr & I2C_MASK_FLAG),
.ext_flag = (client->ext_flag | I2C_ENEXT_FLAG | I2C_DMA_FLAG),
.flags = 0,
.buf = (uint8_t*)gpDMABuf_pa,
.len = 1 + len,
.timing = client->timing
};
wr_buf[0] = offset;
if (txbuf == NULL) {
NVT_ERR("txbuf is NULL!\n");
return -ENOMEM;
}
memcpy(wr_buf+1, txbuf, len);
for (retries = 0; retries < 20; ++retries) {
ret = i2c_transfer(client->adapter, &msg, 1);
if (ret < 0) {
continue;
}
return ret;
}
NVT_ERR("Dma I2C Write Error: 0x%04X, %d byte(s), err-code: %d", offset, len, ret);
return ret;
}
int32_t i2c_read_bytes_dma(struct i2c_client *client, u16 addr, uint8_t offset, uint8_t *rxbuf, uint16_t len)
{
uint8_t *rd_buf = rxbuf;
uint16_t left = len;
uint16_t read_len = 0;
int32_t ret = -1;
while (left > 0) {
if (left > DMA_MAX_TRANSACTION_LENGTH) {
read_len = DMA_MAX_TRANSACTION_LENGTH;
} else {
read_len = left;
}
ret = i2c_dma_read(client, addr, offset, rd_buf, read_len);
if (ret < 0) {
NVT_ERR("dma i2c read failed!\n");
return -EIO;
}
left -= read_len;
offset += read_len;
rd_buf += read_len;
}
return ret;
}
int32_t i2c_write_bytes_dma(struct i2c_client *client, u16 addr, uint8_t offset, uint8_t *txbuf, uint16_t len)
{
uint8_t *wr_buf = txbuf;
int32_t ret = 0;
int32_t write_len = 0;
int32_t left = len;
while (left > 0) {
if (left > DMA_MAX_I2C_TRANSFER_SIZE) {
write_len = DMA_MAX_I2C_TRANSFER_SIZE;
} else {
write_len = left;
}
ret = i2c_dma_write(client, addr, offset, wr_buf, write_len);
if (ret < 0) {
NVT_ERR("dma i2c write failed!\n");
return -EIO;
}
left -= write_len;
offset += write_len;
wr_buf += write_len;
}
return ret;
}
#else //I2C_DMA_SUPPORT
int i2c_read_bytes_non_dma(struct i2c_client *client, u16 addr,uint8_t offset, uint8_t *rxbuf, uint16_t len)
{
uint8_t buf[2] = {0};
uint16_t left = len;
uint16_t index = 0;
int32_t ret = 0;
int32_t retries = 0;
struct i2c_msg msg[2] = {
{
.addr = ((addr &I2C_MASK_FLAG) | (I2C_ENEXT_FLAG)),
.flags = 0,
.buf = buf,
.len = 1,
.timing = client->timing
},
{
.addr = ((addr &I2C_MASK_FLAG) | (I2C_ENEXT_FLAG)),
.flags = I2C_M_RD,
.timing = client->timing
},
};
if (rxbuf == NULL) {
NVT_ERR("rxbuf is NULL!\n");
return -ENOMEM;
}
while (left > 0) {
buf[0] = offset + index;
msg[1].buf = &rxbuf[index];
if (left > MAX_TRANSACTION_LENGTH) {
msg[1].len = MAX_TRANSACTION_LENGTH;
left -= MAX_TRANSACTION_LENGTH;
index += MAX_TRANSACTION_LENGTH;
} else {
msg[1].len = left;
left = 0;
}
retries = 0;
while (retries < 20) {
ret = i2c_transfer(client->adapter, msgs, 2);
if (ret == 2) break;
retries++;
}
if (unlikely(retries == 20)) {
NVT_ERR("error, I2C read 0x%X length=%d failed! ret=%d\n", offset + index, len, ret);
ret = -EIO;
}
}
return ret;
}
int i2c_write_bytes_non_dma(struct i2c_client *client, u16 addr,uint8_t offset, uint8_t *txbuf, uint16_t len)
{
uint8_t buf[MAX_TRANSACTION_LENGTH];
uint16_t left = len;
uint16_t index = 0;
int32_t ret = 0;
int32_t retries = 0;
struct i2c_msg msg = {
.addr = ((addr &I2C_MASK_FLAG) | (I2C_ENEXT_FLAG)),
.flags = 0,
.buf = buf,
.timing = client->timing,
};
if (txbuf == NULL) {
NVT_ERR("txbuf is NULL!\n");
return -ENOMEM;
}
while (left > 0) {
retries = 0;
buf[0] = (offset + index) & 0xFF;
if (left > MAX_I2C_TRANSFER_SIZE) {
memcpy(&buf[1], &txbuf[index], MAX_I2C_TRANSFER_SIZE);
msg.len = MAX_TRANSACTION_LENGTH;
left -= MAX_I2C_TRANSFER_SIZE;
index += MAX_I2C_TRANSFER_SIZE;
} else {
memcpy(&buf[1], &txbuf[index], left);
msg.len = left + 1;
left = 0;
}
while (retries < 20) {
ret = i2c_transfer(client->adapter, &msgs, 1);
if (ret == 1) break;
retries++;
}
if (unlikely(retries == 20)) {
NVT_ERR("error, I2C write 0x%X length=%d failed! ret=%d\n", offset, len, ret);
ret = -EIO;
}
}
return ret;
}
#endif //I2C_DMA_SUPPORT
#endif //CONFIG_MTK_I2C_EXTENSION
/*******************************************************
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)
{
#ifndef CONFIG_MTK_I2C_EXTENSION
struct i2c_msg msgs[2];
int32_t ret = -1;
int32_t retries = 0;
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 = &buf[1];
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;
}
return ret;
#else //CONFIG_MTK_I2C_EXTENSION
#if I2C_DMA_SUPPORT
return i2c_read_bytes_dma(client, address, buf[0], &buf[1], len-1);
#else
return i2c_read_bytes_non_dma(client, address, buf[0], &buf[1], len-1);
#endif
#endif //CONFIG_MTK_I2C_EXTENSION
}
/*******************************************************
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)
{
#ifndef CONFIG_MTK_I2C_EXTENSION
struct i2c_msg msg;
int32_t ret = -1;
int32_t retries = 0;
msg.flags = !I2C_M_RD;
msg.addr = address;
msg.len = len;
msg.buf = buf;
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;
}
return ret;
#else //CONFIG_MTK_I2C_EXTENSION
#if I2C_DMA_SUPPORT
return i2c_write_bytes_dma(client, address, buf[0], &buf[1], len-1);
#else
return i2c_write_bytes_non_dma(client, address, buf[0], &buf[1], len-1);
#endif
#endif //CONFIG_MTK_I2C_EXTENSION
}
/*******************************************************
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};
//---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);
}
/*******************************************************
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---
buf[0] = 0xFF;
buf[1] = (ts->mmap->EVENT_BUF_ADDR >> 16) & 0xFF;
buf[2] = (ts->mmap->EVENT_BUF_ADDR >> 8) & 0xFF;
CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 3);
//---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;
msleep(10);
}
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---
buf[0] = 0xFF;
buf[1] = (ts->mmap->EVENT_BUF_ADDR >> 16) & 0xFF;
buf[2] = (ts->mmap->EVENT_BUF_ADDR >> 8) & 0xFF;
CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 3);
//---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;
msleep(10);
}
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) {
msleep(10);
//---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};
int32_t ret = 0;
//---set xdata index to EVENT BUF ADDR---
buf[0] = 0xFF;
buf[1] = (ts->mmap->EVENT_BUF_ADDR >> 16) & 0xFF;
buf[2] = (ts->mmap->EVENT_BUF_ADDR >> 8) & 0xFF;
CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 3);
//---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 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---
buf[0] = 0xFF;
buf[1] = (ts->mmap->EVENT_BUF_ADDR >> 16) & 0xFF;
buf[2] = (ts->mmap->EVENT_BUF_ADDR >> 8) & 0xFF;
CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 3);
//---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 (str[1] > (sizeof(str) - 2) || str[1] < 1) {
NVT_ERR("i2c transfer lens invalid\n");
return -EFAULT;
}
#if NVT_TOUCH_ESD_PROTECT
/*
* stop esd check work to avoid case that 0x77 report righ after here to enable esd check again
* finally lead to trigger esd recovery bootloader reset
*/
cancel_delayed_work_sync(&nvt_esd_check_work);
nvt_esd_check_enable(false);
#endif /* #if NVT_TOUCH_ESD_PROTECT */
i2c_wr = str[0] >> 7;
if (i2c_wr == 0) { //I2C write
while (retries < 20) {
ret = CTP_I2C_WRITE(ts->client, (str[0] & 0x7F), &str[2], str[1]);
if (ret == 1)
break;
else
NVT_ERR("error, retries=%d, ret=%d\n", retries, ret);
retries++;
}
if (unlikely(retries == 20)) {
NVT_ERR("error, ret = %d\n", ret);
return -EIO;
}
return ret;
} else if (i2c_wr == 1) { //I2C read
while (retries < 20) {
ret = CTP_I2C_READ(ts->client, (str[0] & 0x7F), &str[2], str[1]);
if (ret == 2)
break;
else
NVT_ERR("error, retries=%d, ret=%d\n", retries, ret);
retries++;
}
// copy buff to user if i2c transfer
if (retries < 20) {
if (copy_to_user(buff, str, count))
return -EFAULT;
}
if (unlikely(retries == 20)) {
NVT_ERR("error, ret = %d\n", ret);
return -EIO;
}
return ret;
} else {
NVT_ERR("Call error, str[0]=%d\n", str[0]);
return -EFAULT;
}
}
/*******************************************************
Description:
Novatek touchscreen /proc/NVTflash open function.
return:
Executive outcomes. 0---succeed. -12---failed.
*******************************************************/
static int32_t nvt_flash_open(struct inode *inode, struct file *file)
{
struct nvt_flash_data *dev;
dev = kmalloc(sizeof(struct nvt_flash_data), GFP_KERNEL);
if (dev == NULL) {
NVT_ERR("Failed to allocate memory for nvt flash data\n");
return -ENOMEM;
}
rwlock_init(&dev->lock);
file->private_data = dev;
return 0;
}
/*******************************************************
Description:
Novatek touchscreen /proc/NVTflash close function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static int32_t nvt_flash_close(struct inode *inode, struct file *file)
{
struct nvt_flash_data *dev = file->private_data;
if (dev)
kfree(dev);
return 0;
}
static const struct file_operations nvt_flash_fops = {
.owner = THIS_MODULE,
.open = nvt_flash_open,
.release = nvt_flash_close,
.read = nvt_flash_read,
};
/*******************************************************
Description:
Novatek touchscreen /proc/NVTflash initial function.
return:
Executive outcomes. 0---succeed. -12---failed.
*******************************************************/
static int32_t nvt_flash_proc_init(void)
{
NVT_proc_entry = proc_create(DEVICE_NAME, 0444, NULL,&nvt_flash_fops);
if (NVT_proc_entry == NULL) {
NVT_ERR("Failed!\n");
return -ENOMEM;
} else {
NVT_LOG("Succeeded!\n");
}
NVT_LOG("============================================================\n");
NVT_LOG("Create /proc/NVTflash\n");
NVT_LOG("============================================================\n");
return 0;
}
#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
#ifdef CONFIG_PM_WAKELOCKS
static struct wakeup_source *gestrue_wakelock;
#else
static struct wake_lock gestrue_wakelock;
#endif
/*******************************************************
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 //WAKEUP_GESTURE
#if NVT_TOUCH_ESD_PROTECT
void nvt_esd_check_enable(uint8_t enable)
{
/* enable/disable esd check flag */
esd_check = enable;
/* update interrupt timer */
irq_timer = jiffies;
/* clear esd_retry counter, if protect function is enabled */
esd_retry = enable ? 0 : esd_retry;
}
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;
}
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/%d)\n", esd_check, esd_retry, esd_retry_max); //DEBUG
if (esd_retry >= esd_retry_max)
nvt_esd_check_enable(false);
if ((timer > NVT_TOUCH_ESD_CHECK_PERIOD) && esd_check) {
NVT_ERR("do ESD recovery, timer = %d, retry = %d\n", timer, esd_retry);
/* do esd recovery, bootloader reset */
nvt_bootloader_reset();
/* 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 int touch_event_handler(void *unused)
{
struct sched_param param = { .sched_priority = 4 };
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;
sched_setscheduler(current, SCHED_RR, &param);
do
{
set_current_state(TASK_INTERRUPTIBLE);
wait_event_interruptible(waiter, tpd_flag != 0);
tpd_flag = 0;
set_current_state(TASK_RUNNING);
mutex_lock(&ts->lock);
memset(point_data, 0, POINT_DATA_LEN + 1);
ret = CTP_I2C_READ(ts->client, I2C_FW_Address, point_data, POINT_DATA_LEN + 1);
if (ret < 0) {
NVT_ERR("CTP_I2C_READ failed.(%d)\n", ret);
goto XFER_ERROR;
}
/*
//--- dump I2C buf ---
for (i = 0; i < 10; i++) {
printk("%02X %02X %02X %02X %02X %02X ", point_data[1+i*6], point_data[2+i*6], point_data[3+i*6], point_data[4+i*6], point_data[5+i*6], point_data[6+i*6]);
}
printk("\n");
*/
#if NVT_TOUCH_ESD_PROTECT
if (nvt_fw_recovery(point_data)) {
nvt_esd_check_enable(true);
goto XFER_ERROR;
}
#endif /* #if NVT_TOUCH_ESD_PROTECT */
if (bTouchIsAwake == 0) {
#if WAKEUP_GESTURE
input_id = (uint8_t)(point_data[1] >> 3);
nvt_ts_wakeup_gesture_report(input_id, point_data);
#endif
enable_irq(ts->client->irq);
mutex_unlock(&ts->lock);
NVT_LOG("return for interrupt after suspend...\n");
continue;
}
finger_cnt = 0;
#if MT_PROTOCOL_B
memset(press_id, 0, ts->max_touch_num);
#endif /* MT_PROTOCOL_B */
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:
enable_irq(ts->client->irq);
mutex_unlock(&ts->lock);
} while (!kthread_should_stop());
return 0;
}
/*******************************************************
Description:
External interrupt service routine.
return:
irq execute status.
*******************************************************/
static irqreturn_t nvt_ts_irq_handler(int32_t irq, void *dev_id)
{
tpd_flag = 1;
disable_irq_nosync(ts->client->irq);
#if WAKEUP_GESTURE
if (bTouchIsAwake == 0) {
#ifdef CONFIG_PM_WAKELOCKS
__pm_wakeup_event(gestrue_wakelock, msecs_to_jiffies(5000));
#else
wake_lock_timeout(&gestrue_wakelock, msecs_to_jiffies(5000));
#endif
}
#endif
wake_up_interruptible(&waiter);
return IRQ_HANDLED;
}
/*******************************************************
Description:
Register interrupt handler
return:
irq execute status.
*******************************************************/
static int nvt_irq_registration(void)
{
struct device_node *node = NULL;
int ret = 0;
u32 ints[2] = { 0, 0 };
NVT_LOG("Device Tree Tpd_irq_registration!\n");
node = of_find_matching_node(node, touch_of_match);
if (node) {
of_property_read_u32_array(node, "debounce", ints, ARRAY_SIZE(ints));
//gpio_set_debounce(ints[0], ints[1]);
ts->client->irq = irq_of_parse_and_map(node, 0);
NVT_LOG("int_trigger_type=%d\n", ts->int_trigger_type);
ret = request_irq(ts->client->irq, nvt_ts_irq_handler, ts->int_trigger_type, ts->client->name, ts);
if (ret > 0) {
ret = -1;
NVT_ERR("tpd request_irq IRQ LINE NOT AVAILABLE!.\n");
}
} else {
NVT_ERR("tpd request_irq can not find touch eint device node!.\n");
ret = -1;
}
NVT_LOG("irq:%d, debounce:%d-%d:\n", ts->client->irq, ints[0], ints[1]);
return ret;
}
/*******************************************************
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---
buf[0] = 0xFF;
buf[1] = 0x01;
buf[2] = 0xF6;
CTP_I2C_WRITE(ts->client, I2C_BLDR_Address, buf, 3);
//---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[2] == 0xFC) && (buf[3] == 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---
buf[0] = 0xFF;
buf[1] = 0x03;
buf[2] = 0xF1;
CTP_I2C_WRITE(ts->client, I2C_BLDR_Address, buf, 3);
buf[0] = 0x35;
buf[1] = 0xA5;
CTP_I2C_WRITE(ts->client, I2C_BLDR_Address, buf, 2);
//---check CRC_ERR_FLAG---
buf[0] = 0xFF;
buf[1] = 0x03;
buf[2] = 0xF1;
CTP_I2C_WRITE(ts->client, I2C_BLDR_Address, buf, 3);
buf[0] = 0x35;
buf[1] = 0x00;
CTP_I2C_READ(ts->client, I2C_BLDR_Address, buf, 2);
if (buf[1] == 0xA5)
break;
}
if (retry == 0)
NVT_ERR("CRC auto reboot is not able to be stopped! buf[1]=0x%02X\n", buf[1]);
}
return;
}
/*******************************************************
Description:
Novatek touchscreen check chip version trim function.
return:
Executive outcomes. 0---NVT IC. -1---not NVT IC.
*******************************************************/
static int8_t nvt_ts_check_chip_ver_trim(void)
{
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);
buf[0] = 0xFF;
buf[1] = 0x01;
buf[2] = 0xF6;
CTP_I2C_WRITE(ts->client, I2C_BLDR_Address, buf, 3);
buf[0] = 0x4E;
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]);
// 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].carrier_system;
ret = 0;
goto out;
} else {
ts->mmap = NULL;
ret = -1;
}
}
//---Stop CRC check to prevent IC auto reboot---
if (((buf[1] == 0xFC) && (buf[2] == 0xFC) && (buf[3] == 0xFC)) ||
((buf[1] == 0xFF) && (buf[2] == 0xFF) && (buf[3] == 0xFF))) {
nvt_stop_crc_reboot();
}
msleep(10);
}
out:
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 ((TOUCH_KEY_NUM > 0) || WAKEUP_GESTURE)
int32_t retry = 0;
#endif
NVT_LOG("start\n");
ts = kmalloc(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);
#if NVT_TOUCH_SUPPORT_HW_RST
NVT_GPIO_OUTPUT(GTP_RST_PORT, 1);
#endif
//---request INT-pin---
NVT_GPIO_AS_INT(GTP_INT_PORT);
//---check i2c func.---
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
NVT_ERR("i2c_check_functionality failed. (no I2C_FUNC_I2C)\n");
ret = -ENODEV;
goto err_check_functionality_failed;
}
// need 10ms delay after POR(power on reset)
msleep(10);
//---check input device---
if (tpd->dev == NULL) {
NVT_LOG("input device tpd->dev is NULL, allocate for ts->input_dev\n");
//---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;
}
//---register input device---
ts->input_dev->name = NVT_TS_NAME;
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;
}
} else {
ts->input_dev = tpd->dev;
}
#ifdef CONFIG_MTK_I2C_EXTENSION
#if I2C_DMA_SUPPORT
ts->input_dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
gpDMABuf_va = (uint8_t *)dma_alloc_coherent(&ts->input_dev->dev,
DMA_MAX_TRANSACTION_LENGTH, &gpDMABuf_pa, GFP_KERNEL);
if(!gpDMABuf_va){
NVT_ERR("Allocate DMA I2C Buffer failed!\n");
goto err_dma_alloc_coherent_failed;
}
memset(gpDMABuf_va, 0, DMA_MAX_TRANSACTION_LENGTH);
#endif
#endif
//---check chip version trim---
ret = nvt_ts_check_chip_ver_trim();
if (ret) {
NVT_ERR("chip is not identified\n");
ret = -EINVAL;
goto err_chipvertrim_failed;
}
mutex_init(&ts->lock);
mutex_lock(&ts->lock);
nvt_bootloader_reset();
nvt_check_fw_reset_state(RESET_STATE_INIT);
nvt_get_fw_info();
mutex_unlock(&ts->lock);
thread = kthread_run(touch_event_handler, 0, TPD_DEVICE);
if (IS_ERR(thread))
{
ret = PTR_ERR(thread);
NVT_ERR("failed to create kernel thread: %d\n", ret);
goto err_create_kthread_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]);
}
#ifdef CONFIG_PM_WAKELOCKS
gestrue_wakelock = wakeup_source_register(NULL, "poll-wake-lock");
#else
wake_lock_init(&gestrue_wakelock, WAKE_LOCK_SUSPEND, "poll-wake-lock");
#endif
#endif
sprintf(ts->phys, "input/ts");
ts->input_dev->phys = ts->phys;
ts->input_dev->id.bustype = BUS_I2C;
ret = nvt_irq_registration();
if (ret != 0) {
NVT_ERR("request irq failed. ret=%d\n", ret);
goto err_int_request_failed;
} else {
disable_irq(client->irq);
NVT_LOG("request irq %d succeed\n", client->irq);
}
#if BOOT_UPDATE_FIRMWARE
nvt_fwu_wq = create_singlethread_workqueue("nvt_fwu_wq");
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
#if NVT_TOUCH_ESD_PROTECT
INIT_DELAYED_WORK(&nvt_esd_check_work, nvt_esd_check_func);
nvt_esd_check_wq = create_workqueue("nvt_esd_check_wq");
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_init_NVT_ts;
}
#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_init_NVT_ts;
}
#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_init_NVT_ts;
}
#endif
bTouchIsAwake = 1;
tpd_load_status = 1;
NVT_LOG("end\n");
enable_irq(client->irq);
return 0;
#if (NVT_TOUCH_PROC || NVT_TOUCH_EXT_PROC || NVT_TOUCH_MP)
err_init_NVT_ts:
#endif
free_irq(client->irq, ts);
#if BOOT_UPDATE_FIRMWARE
err_create_nvt_fwu_wq_failed:
#endif
err_int_request_failed:
err_create_kthread_failed:
mutex_destroy(&ts->lock);
err_chipvertrim_failed:
#ifdef CONFIG_MTK_I2C_EXTENSION
#if I2C_DMA_SUPPORT
err_dma_alloc_coherent_failed:
if (gpDMABuf_va)
dma_free_coherent(NULL, DMA_MAX_TRANSACTION_LENGTH, gpDMABuf_va, gpDMABuf_pa);
#endif
#endif
err_input_register_device_failed:
if (tpd->dev == NULL)
input_free_device(ts->input_dev);
err_input_dev_alloc_failed:
err_check_functionality_failed:
i2c_set_clientdata(client, NULL);
kfree(ts);
return ret;
}
/*******************************************************
Description:
Novatek touchscreen driver release function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static int32_t nvt_ts_remove(struct i2c_client *client)
{
mutex_destroy(&ts->lock);
NVT_LOG("Removing driver...\n");
free_irq(client->irq, ts);
if (tpd->dev == NULL)
input_unregister_device(ts->input_dev);
i2c_set_clientdata(client, NULL);
kfree(ts);
return 0;
}
static int nvt_i2c_detect(struct i2c_client *client, struct i2c_board_info *info)
{
strcpy(info->type, NVT_I2C_NAME);
return 0;
}
static const struct i2c_device_id nvt_ts_id[] = {
{ NVT_I2C_NAME, 0 },
{ }
};
#ifdef CONFIG_OF
static const struct of_device_id nvt_match_table[] = {
{.compatible = "mediatek,cap_touch"},
{},
};
#endif
static struct i2c_driver nvt_i2c_driver = {
.probe = nvt_ts_probe,
.remove = nvt_ts_remove,
.detect = nvt_i2c_detect,
.driver.name = NVT_I2C_NAME,
.driver = {
.name = NVT_I2C_NAME,
.owner = THIS_MODULE,
#ifdef CONFIG_OF
.of_match_table = nvt_match_table,
#endif
},
.id_table = nvt_ts_id,
};
static int nvt_local_init(void)
{
int ret = 0;
NVT_LOG("start\n");
ret = i2c_add_driver(&nvt_i2c_driver);
if (ret) {
NVT_ERR("unable to add i2c driver.\n");
return -1;
}
if (tpd_load_status == 0) {
NVT_ERR("add error touch panel driver.\n");
i2c_del_driver(&nvt_i2c_driver);
return -1;
}
if (tpd_dts_data.use_tpd_button) {
/*initialize tpd button data*/
tpd_button_setting(tpd_dts_data.tpd_key_num, tpd_dts_data.tpd_key_local,
tpd_dts_data.tpd_key_dim_local);
}
tpd_type_cap = 1;
NVT_LOG("end\n");
return 0;
}
/*******************************************************
Description:
Novatek touchscreen driver suspend function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static void 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;
}
mutex_lock(&ts->lock);
NVT_LOG("start\n");
bTouchIsAwake = 0;
#if NVT_TOUCH_ESD_PROTECT
cancel_delayed_work_sync(&nvt_esd_check_work);
nvt_esd_check_enable(false);
#endif /* #if NVT_TOUCH_ESD_PROTECT */
#if WAKEUP_GESTURE
//---write i2c command to enter "wakeup gesture mode"---
buf[0] = EVENT_MAP_HOST_CMD;
buf[1] = 0x13;
#if 0 // Do not set 0xFF first, ToDo
buf[2] = 0xFF;
buf[3] = 0xFF;
CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 4);
#else
CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 2);
#endif
enable_irq_wake(ts->client->irq);
NVT_LOG("Enabled touch wakeup gesture\n");
#else // WAKEUP_GESTURE
disable_irq(ts->client->irq);
//---write i2c 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
/* 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);
mutex_unlock(&ts->lock);
NVT_LOG("end\n");
return;
}
/*******************************************************
Description:
Novatek touchscreen driver resume function.
return:
Executive outcomes. 0---succeed.
*******************************************************/
static void nvt_ts_resume(struct device *dev)
{
if (bTouchIsAwake) {
NVT_LOG("Touch is already resume\n");
return;
}
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
NVT_GPIO_OUTPUT(GTP_RST_PORT, 1);
#endif
nvt_bootloader_reset();
nvt_check_fw_reset_state(RESET_STATE_REK);
#if !WAKEUP_GESTURE
enable_irq(ts->client->irq);
#endif
#if NVT_TOUCH_ESD_PROTECT
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;
}
static struct device_attribute *novatek_attrs[] = {
};
static struct tpd_driver_t nvt_device_driver =
{
.tpd_device_name = NVT_I2C_NAME,
.tpd_local_init = nvt_local_init,
.suspend = nvt_ts_suspend,
.resume = nvt_ts_resume,
.attrs = {
.attr = novatek_attrs,
.num = ARRAY_SIZE(novatek_attrs),
},
};
/*******************************************************
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");
tpd_get_dts_info();
ret = tpd_driver_add(&nvt_device_driver);
if (ret < 0){
NVT_ERR("failed to add i2c driver");
goto err_driver;
}
NVT_LOG("end\n");
err_driver:
return ret;
}
/*******************************************************
Description:
Driver uninstall function.
return:
n.a.
********************************************************/
static void __exit nvt_driver_exit(void)
{
tpd_driver_remove(&nvt_device_driver);
#if BOOT_UPDATE_FIRMWARE
if (nvt_fwu_wq)
destroy_workqueue(nvt_fwu_wq);
#endif
#if NVT_TOUCH_ESD_PROTECT
if (nvt_esd_check_wq)
destroy_workqueue(nvt_esd_check_wq);
#endif /* #if NVT_TOUCH_ESD_PROTECT */
}
module_init(nvt_driver_init);
module_exit(nvt_driver_exit);
MODULE_DESCRIPTION("Novatek Touchscreen Driver");
MODULE_LICENSE("GPL");
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