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nt36xxx.c
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nt36xxx.c
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/*
* Copyright (C) 2010 - 2018 Novatek, Inc.
* Copyright (C) 2021 XiaoMi, Inc.
*
* $Revision: 32206 $
* $Date: 2018-08-10 19:23:04 +0800 (週五, 10 八月 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/interrupt.h>
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
#include <linux/uaccess.h>
#include <linux/input/mt.h>
#include <linux/of_gpio.h>
#include <linux/of_irq.h>
#include <linux/debugfs.h>
#include "../spi-xiaomi-tp.h"
#include <drm/drm_notifier_mi.h>
#include <linux/init.h>
#include <linux/notifier.h>
#include <linux/fb.h>
#if defined(CONFIG_HAS_EARLYSUSPEND)
#include <linux/earlysuspend.h>
#endif
#include "nt36xxx.h"
#ifndef NVT_SAVE_TESTDATA_IN_FILE
#include "nt36xxx_mp_ctrlram.h"
#endif
#if NVT_TOUCH_ESD_PROTECT
#include <linux/jiffies.h>
#endif /* #if NVT_TOUCH_ESD_PROTECT */
#ifdef CONFIG_TOUCHSCREEN_XIAOMI_TOUCHFEATURE
#include "../xiaomi/xiaomi_touch.h"
#endif
#if NVT_TOUCH_ESD_PROTECT
static struct delayed_work nvt_esd_check_work;
static struct workqueue_struct *nvt_esd_check_wq;
static unsigned long irq_timer = 0;
uint8_t esd_check = false;
uint8_t esd_retry = 0;
#endif /* #if NVT_TOUCH_ESD_PROTECT */
#if NVT_TOUCH_EXT_PROC
extern int32_t nvt_extra_proc_init(void);
extern void nvt_extra_proc_deinit(void);
#endif
#if NVT_TOUCH_MP
extern int32_t nvt_mp_proc_init(void);
extern void nvt_mp_proc_deinit(void);
#endif
struct nvt_ts_data *ts;
#if BOOT_UPDATE_FIRMWARE
static struct workqueue_struct *nvt_fwu_wq;
static struct workqueue_struct *nvt_lockdown_wq;
extern void Boot_Update_Firmware(struct work_struct *work);
#endif
#ifdef MI_DRM_NOTIFIER
static int nvt_drm_notifier_callback(struct notifier_block *self, unsigned long event, void *data);
#else
static int nvt_fb_notifier_callback(struct notifier_block *self, unsigned long event, void *data);
#endif
#if defined(CONFIG_HAS_EARLYSUSPEND)
static void nvt_ts_early_suspend(struct early_suspend *h);
static void nvt_ts_late_resume(struct early_suspend *h);
#endif
static int32_t nvt_ts_suspend(struct device *dev);
static int32_t nvt_ts_resume(struct device *dev);
extern int dsi_panel_lockdown_info_read(unsigned char *plockdowninfo);
extern void dsi_panel_doubleclick_enable(bool on);
static int32_t nvt_check_palm(uint8_t input_id, uint8_t *data);
extern void touch_irq_boost(void);
extern void lpm_disable_for_input(bool on);
uint32_t ENG_RST_ADDR = 0x7FFF80;
uint32_t SWRST_N8_ADDR = 0; /* read from dtsi */
uint32_t SPI_RD_FAST_ADDR = 0; /* read from dtsi */
#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 /*endif CONFIG_MTK_SPI*/
#ifdef CONFIG_SPI_MT65XX
const struct mtk_chip_config spi_ctrdata = {
.rx_mlsb = 1,
.tx_mlsb = 1,
.cs_pol = 0,
};
#endif /*endif CONFIG_SPI_MT65XX*/
static ssize_t nvt_cg_color_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%c\n", ts->lockdown_info[2]);
}
static ssize_t nvt_cg_maker_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%c\n", ts->lockdown_info[6]);
}
static ssize_t nvt_display_maker_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%c\n", ts->lockdown_info[1]);
}
static DEVICE_ATTR(cg_color, (S_IRUGO), nvt_cg_color_show, NULL);
static DEVICE_ATTR(cg_maker, (S_IRUGO), nvt_cg_maker_show, NULL);
static DEVICE_ATTR(display_maker, (S_IRUGO), nvt_display_maker_show, NULL);
struct attribute *nvt_panel_attr[] = {
&dev_attr_cg_color.attr,
&dev_attr_cg_maker.attr,
&dev_attr_display_maker.attr,
NULL,
};
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,
};
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};
NVT_LOG("nvt_write_addr enter\n");
/* ---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[2] = {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[2] = {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 eng reset cmd
function.
return:
n.a.
*******************************************************/
void nvt_eng_reset(void)
{
/* ---eng reset cmds to ENG_RST_ADDR--- */
NVT_LOG("%s \n", __func__);
nvt_write_addr(ENG_RST_ADDR, 0x5A);
NVT_LOG("%s leave\n", __func__);
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_N8_ADDR--- */
nvt_write_addr(SWRST_N8_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_N8_ADDR--- */
nvt_write_addr(SWRST_N8_ADDR, 0xAA);
msleep(15);
}
/*******************************************************
Description:
Novatek touchscreen reset MCU (boot) function.
return:
n.a.
*******************************************************/
void nvt_bootloader_reset(void)
{
/* ---reset cmds to SWRST_N8_ADDR--- */
nvt_write_addr(SWRST_N8_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);
}
}
/*******************************************************
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;
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 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--- */
nvt_set_page(ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_PROJECTID);
/* ---read project id--- */
buf[0] = EVENT_MAP_PROJECTID;
buf[1] = 0x00;
buf[2] = 0x00;
CTP_SPI_READ(ts->client, buf, 3);
ts->nvt_pid = (buf[2] << 8) + buf[1];
/* ---set xdata index to EVENT BUF ADDR--- */
nvt_set_page(ts->mmap->EVENT_BUF_ADDR);
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;
#if 0
/* READ CHIP ID */
/* ---set xdata index to 0x1F600-- */
nvt_set_page(0x1F600);
buf[0] = 0x4E;
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]);
memset(buf, 0, 64);
#endif
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, 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;
}
NVT_LOG("FW type is 0x%02X, fw_ver=%d\n", buf[14], ts->fw_ver);
/* ---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 "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) {
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;
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 file_operations nvt_flash_fops = {
.owner = THIS_MODULE,
.open = nvt_flash_open,
.release = nvt_flash_close,
.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)
{
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_DOUBLE_CLICK:
NVT_LOG("Gesture : Double Click.\n");
input_report_key(ts->input_dev, KEY_WAKEUP, 1);
input_sync(ts->input_dev);
input_report_key(ts->input_dev, KEY_WAKEUP, 0);
input_sync(ts->input_dev);
break;
default:
break;
}
}
#endif
/*******************************************************
Description:
Novatek touchscreen parse device tree function.
return:
n.a.
*******************************************************/
#ifdef CONFIG_OF
static int32_t nvt_parse_dt(struct device *dev)
{
struct nvt_config_info *config_info;
struct device_node *temp, *np = dev->of_node;
int32_t ret = 0;
uint32_t temp_val;
#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);
ret = of_property_read_u32(np, "novatek,swrst-n8-addr", &SWRST_N8_ADDR);
if (ret) {
NVT_ERR("error reading novatek,swrst-n8-addr. ret=%d\n", ret);
return ret;
} else {
NVT_LOG("SWRST_N8_ADDR=0x%06X\n", SWRST_N8_ADDR);
}
ret = of_property_read_u32(np, "novatek,spi-rd-fast-addr", &SPI_RD_FAST_ADDR);
if (ret) {
NVT_ERR("not support novatek,spi-rd-fast-addr\n");