터치 스크린 GT9xx 이식
Makefile 파일 을 압축 해제 하고 작성 합 니 다. gt9xx. c 의 원본 코드 는 수정 할 필요 가 없습니다. gt9xx. h 는 플랫폼 과 터치 스크린 에 따라 일정한 수정 이 필요 합 니 다.
gt9xx. c 의 내용 은?
/* drivers/input/touchscreen/gt9xx.c
*
* 2010 - 2013 Goodix Technology.
*
* 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 a reference
* to you, when you are integrating the GOODiX's CTP IC into your system,
* 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.
*
* Version: 1.8
* Authors: [email protected], [email protected]
* Release Date: 2013/04/25
* Revision record:
* V1.0:
* first Release. By Andrew, 2012/08/31
* V1.2:
* modify gtp_reset_guitar,slot report,tracking_id & 0x0F. By Andrew, 2012/10/15
* V1.4:
* modify gt9xx_update.c. By Andrew, 2012/12/12
* V1.6:
* 1. new heartbeat/esd_protect mechanism(add external watchdog)
* 2. doze mode, sliding wakeup
* 3. 3 more cfg_group(GT9 Sensor_ID: 0~5)
* 3. config length verification
* 4. names & comments
* By Meta, 2013/03/11
* V1.8:
* 1. pen/stylus identification
* 2. read double check & fixed config support
* 2. new esd & slide wakeup optimization
* By Meta, 2013/06/08
*/
#include <linux/irq.h>
#include "gt9xx.h"
#if GTP_ICS_SLOT_REPORT
#include <linux/input/mt.h>
#endif
static const char *goodix_ts_name = "Goodix Capacitive TouchScreen";
static struct workqueue_struct *goodix_wq;
struct i2c_client * i2c_connect_client = NULL;
u8 config[GTP_CONFIG_MAX_LENGTH + GTP_ADDR_LENGTH]
= {GTP_REG_CONFIG_DATA >> 8, GTP_REG_CONFIG_DATA & 0xff};
#if GTP_HAVE_TOUCH_KEY
static const u16 touch_key_array[] = GTP_KEY_TAB;
#define GTP_MAX_KEY_NUM (sizeof(touch_key_array)/sizeof(touch_key_array[0]))
#if GTP_DEBUG_ON
static const int key_codes[] = {KEY_HOME, KEY_BACK, KEY_MENU, KEY_SEARCH};
static const char *key_names[] = {"Key_Home", "Key_Back", "Key_Menu", "Key_Search"};
#endif
#endif
static s8 gtp_i2c_test(struct i2c_client *client);
void gtp_reset_guitar(struct i2c_client *client, s32 ms);
void gtp_int_sync(s32 ms);
#ifdef CONFIG_HAS_EARLYSUSPEND
static void goodix_ts_early_suspend(struct early_suspend *h);
static void goodix_ts_late_resume(struct early_suspend *h);
#endif
#if GTP_CREATE_WR_NODE
extern s32 init_wr_node(struct i2c_client*);
extern void uninit_wr_node(void);
#endif
#if GTP_AUTO_UPDATE
extern u8 gup_init_update_proc(struct goodix_ts_data *);
#endif
#if GTP_ESD_PROTECT
static struct delayed_work gtp_esd_check_work;
static struct workqueue_struct * gtp_esd_check_workqueue = NULL;
static void gtp_esd_check_func(struct work_struct *);
static s32 gtp_init_ext_watchdog(struct i2c_client *client);
void gtp_esd_switch(struct i2c_client *, s32);
#endif
#if GTP_SLIDE_WAKEUP
typedef enum
{
DOZE_DISABLED = 0,
DOZE_ENABLED = 1,
DOZE_WAKEUP = 2,
}DOZE_T;
static DOZE_T doze_status = DOZE_DISABLED;
static s8 gtp_enter_doze(struct goodix_ts_data *ts);
#endif
static u8 chip_gt9xxs = 0; // true if ic is gt9xxs, like gt915s
u8 grp_cfg_version = 0;
/*******************************************************
Function:
Read data from the i2c slave device.
Input:
client: i2c device.
buf[0~1]: read start address.
buf[2~len-1]: read data buffer.
len: GTP_ADDR_LENGTH + read bytes count
Output:
numbers of i2c_msgs to transfer:
2: succeed, otherwise: failed
*********************************************************/
s32 gtp_i2c_read(struct i2c_client *client, u8 *buf, s32 len)
{
struct i2c_msg msgs[2];
s32 ret=-1;
s32 retries = 0;
GTP_DEBUG_FUNC();
msgs[0].flags = !I2C_M_RD;
msgs[0].addr = client->addr;
msgs[0].len = GTP_ADDR_LENGTH;
msgs[0].buf = &buf[0];
//msgs[0].scl_rate = 300 * 1000; // for Rockchip
msgs[1].flags = I2C_M_RD;
msgs[1].addr = client->addr;
msgs[1].len = len - GTP_ADDR_LENGTH;
msgs[1].buf = &buf[GTP_ADDR_LENGTH];
//msgs[1].scl_rate = 300 * 1000;
while(retries < 5)
{
ret = i2c_transfer(client->adapter, msgs, 2);
if(ret == 2)break;
retries++;
}
if((retries >= 5))
{
#if GTP_SLIDE_WAKEUP
// reset chip would quit doze mode
if (DOZE_ENABLED == doze_status)
{
return ret;
}
#endif
GTP_DEBUG("I2C communication timeout, resetting chip...");
gtp_reset_guitar(client, 10);
}
return ret;
}
/*******************************************************
Function:
Write data to the i2c slave device.
Input:
client: i2c device.
buf[0~1]: write start address.
buf[2~len-1]: data buffer
len: GTP_ADDR_LENGTH + write bytes count
Output:
numbers of i2c_msgs to transfer:
1: succeed, otherwise: failed
*********************************************************/
s32 gtp_i2c_write(struct i2c_client *client,u8 *buf,s32 len)
{
struct i2c_msg msg;
s32 ret = -1;
s32 retries = 0;
GTP_DEBUG_FUNC();
msg.flags = !I2C_M_RD;
msg.addr = client->addr;
msg.len = len;
msg.buf = buf;
//msg.scl_rate = 300 * 1000; // for Rockchip
while(retries < 5)
{
ret = i2c_transfer(client->adapter, &msg, 1);
if (ret == 1)break;
retries++;
}
if((retries >= 5))
{
#if GTP_SLIDE_WAKEUP
if (DOZE_ENABLED == doze_status)
{
return ret;
}
#endif
GTP_DEBUG("I2C communication timeout, resetting chip...");
gtp_reset_guitar(client, 10);
}
return ret;
}
/*******************************************************
Function:
i2c read twice, compare the results
Input:
client: i2c device
addr: operate address
rxbuf: read data to store, if compare successful
len: bytes to read
Output:
FAIL: read failed
SUCCESS: read successful
*********************************************************/
s32 gtp_i2c_read_dbl_check(struct i2c_client *client, u16 addr, u8 *rxbuf, int len)
{
u8 buf[16] = {0};
u8 confirm_buf[16] = {0};
u8 retry = 0;
while (retry++ < 3)
{
memset(buf, 0xAA, 16);
buf[0] = (u8)(addr >> 8);
buf[1] = (u8)(addr & 0xFF);
gtp_i2c_read(client, buf, len + 2);
memset(confirm_buf, 0xAB, 16);
confirm_buf[0] = (u8)(addr >> 8);
confirm_buf[1] = (u8)(addr & 0xFF);
gtp_i2c_read(client, confirm_buf, len + 2);
if (!memcmp(buf, confirm_buf, len+2))
{
break;
}
}
if (retry < 3)
{
memcpy(rxbuf, confirm_buf+2, len);
return SUCCESS;
}
else
{
GTP_ERROR("i2c read 0x%04X, %d bytes, double check failed!", addr, len);
return FAIL;
}
}
/*******************************************************
Function:
Send config.
Input:
client: i2c device.
Output:
result of i2c write operation.
1: succeed, otherwise: failed
*********************************************************/
s32 gtp_send_cfg(struct i2c_client *client)
{
s32 ret = 2;
#if GTP_DRIVER_SEND_CFG
s32 retry = 0;
struct goodix_ts_data *ts = i2c_get_clientdata(client);
if (ts->fixed_cfg)
{
GTP_INFO("Ic fixed config, no config sent!");
return 2;
}
GTP_INFO("driver send config");
for (retry = 0; retry < 5; retry++)
{
ret = gtp_i2c_write(client, config , GTP_CONFIG_MAX_LENGTH + GTP_ADDR_LENGTH);
if (ret > 0)
{
break;
}
}
#endif
return ret;
}
/*******************************************************
Function:
Disable irq function
Input:
ts: goodix i2c_client private data
Output:
None.
*********************************************************/
void gtp_irq_disable(struct goodix_ts_data *ts)
{
unsigned long irqflags;
GTP_DEBUG_FUNC();
spin_lock_irqsave(&ts->irq_lock, irqflags);
if (!ts->irq_is_disable)
{
ts->irq_is_disable = 1;
disable_irq_nosync(ts->client->irq);
}
spin_unlock_irqrestore(&ts->irq_lock, irqflags);
}
/*******************************************************
Function:
Enable irq function
Input:
ts: goodix i2c_client private data
Output:
None.
*********************************************************/
void gtp_irq_enable(struct goodix_ts_data *ts)
{
unsigned long irqflags = 0;
GTP_DEBUG_FUNC();
spin_lock_irqsave(&ts->irq_lock, irqflags);
if (ts->irq_is_disable)
{
enable_irq(ts->client->irq);
ts->irq_is_disable = 0;
}
spin_unlock_irqrestore(&ts->irq_lock, irqflags);
}
/*******************************************************
Function:
Report touch point event
Input:
ts: goodix i2c_client private data
id: trackId
x: input x coordinate
y: input y coordinate
w: input pressure
Output:
None.
*********************************************************/
static void gtp_touch_down(struct goodix_ts_data* ts,s32 id,s32 x,s32 y,s32 w)
{
#if GTP_CHANGE_X2Y
GTP_SWAP(x, y);
#endif
#if GTP_ICS_SLOT_REPORT
input_mt_slot(ts->input_dev, id);
input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, id);
input_report_abs(ts->input_dev, ABS_MT_POSITION_X, x);
input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, y);
input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, w);
input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, w);
#else
input_report_abs(ts->input_dev, ABS_MT_POSITION_X, x);
input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, y);
input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, w);
input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, w);
input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, id);
input_mt_sync(ts->input_dev);
#endif
GTP_DEBUG("ID:%d, X:%d, Y:%d, W:%d", id, x, y, w);
}
/*******************************************************
Function:
Report touch release event
Input:
ts: goodix i2c_client private data
Output:
None.
*********************************************************/
static void gtp_touch_up(struct goodix_ts_data* ts, s32 id)
{
#if GTP_ICS_SLOT_REPORT
input_mt_slot(ts->input_dev, id);
input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, -1);
GTP_DEBUG("Touch id[%2d] release!", id);
#else
input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0);
input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0);
input_mt_sync(ts->input_dev);
#endif
}
/*******************************************************
Function:
Goodix touchscreen work function
Input:
work: work struct of goodix_workqueue
Output:
None.
*********************************************************/
static void goodix_ts_work_func(struct work_struct *work)
{
u8 end_cmd[3] = {GTP_READ_COOR_ADDR >> 8, GTP_READ_COOR_ADDR & 0xFF, 0};
u8 point_data[2 + 1 + 8 * GTP_MAX_TOUCH + 1]={GTP_READ_COOR_ADDR >> 8, GTP_READ_COOR_ADDR & 0xFF};
u8 touch_num = 0;
u8 finger = 0;
static u16 pre_touch = 0;
static u8 pre_key = 0;
#if GTP_WITH_PEN
static u8 pre_pen = 0;
#endif
u8 key_value = 0;
u8* coor_data = NULL;
s32 input_x = 0;
s32 input_y = 0;
s32 input_w = 0;
s32 id = 0;
s32 i = 0;
s32 ret = -1;
struct goodix_ts_data *ts = NULL;
#if GTP_SLIDE_WAKEUP
u8 doze_buf[3] = {0x81, 0x4B};
#endif
GTP_DEBUG_FUNC();
ts = container_of(work, struct goodix_ts_data, work);
if (ts->enter_update)
{
return;
}
#if GTP_SLIDE_WAKEUP
if (DOZE_ENABLED == doze_status)
{
ret = gtp_i2c_read(i2c_connect_client, doze_buf, 3);
GTP_DEBUG("0x814B = 0x%02X", doze_buf[2]);
if (ret > 0)
{
if (doze_buf[2] == 0xAA)
{
GTP_INFO("Slide(0xAA) To Light up the screen!");
doze_status = DOZE_WAKEUP;
input_report_key(ts->input_dev, KEY_POWER, 1);
input_sync(ts->input_dev);
input_report_key(ts->input_dev, KEY_POWER, 0);
input_sync(ts->input_dev);
// clear 0x814B
doze_buf[2] = 0x00;
gtp_i2c_write(i2c_connect_client, doze_buf, 3);
}
else if (doze_buf[2] == 0xBB)
{
GTP_INFO("Slide(0xBB) To Light up the screen!");
doze_status = DOZE_WAKEUP;
input_report_key(ts->input_dev, KEY_POWER, 1);
input_sync(ts->input_dev);
input_report_key(ts->input_dev, KEY_POWER, 0);
input_sync(ts->input_dev);
// clear 0x814B
doze_buf[2] = 0x00;
gtp_i2c_write(i2c_connect_client, doze_buf, 3);
}
else if (0xC0 == (doze_buf[2] & 0xC0))
{
GTP_INFO("double click to light up the screen!");
doze_status = DOZE_WAKEUP;
input_report_key(ts->input_dev, KEY_POWER, 1);
input_sync(ts->input_dev);
input_report_key(ts->input_dev, KEY_POWER, 0);
input_sync(ts->input_dev);
// clear 0x814B
doze_buf[2] = 0x00;
gtp_i2c_write(i2c_connect_client, doze_buf, 3);
}
else
{
gtp_enter_doze(ts);
}
}
if (ts->use_irq)
{
gtp_irq_enable(ts);
}
return;
}
#endif
ret = gtp_i2c_read(ts->client, point_data, 12);
if (ret < 0)
{
GTP_ERROR("I2C transfer error. errno:%d
", ret);
goto exit_work_func;
}
finger = point_data[GTP_ADDR_LENGTH];
if((finger & 0x80) == 0)
{
goto exit_work_func;
}
touch_num = finger & 0x0f;
if (touch_num > GTP_MAX_TOUCH)
{
goto exit_work_func;
}
if (touch_num > 1)
{
u8 buf[8 * GTP_MAX_TOUCH] = {(GTP_READ_COOR_ADDR + 10) >> 8, (GTP_READ_COOR_ADDR + 10) & 0xff};
ret = gtp_i2c_read(ts->client, buf, 2 + 8 * (touch_num - 1));
memcpy(&point_data[12], &buf[2], 8 * (touch_num - 1));
}
#if GTP_HAVE_TOUCH_KEY
key_value = point_data[3 + 8 * touch_num];
if(key_value || pre_key)
{
for (i = 0; i < GTP_MAX_KEY_NUM; i++)
{
#if GTP_DEBUG_ON
for (ret = 0; ret < 4; ++ret)
{
if (key_codes[ret] == touch_key_array[i])
{
GTP_DEBUG("Key: %s %s", key_names[ret], (key_value & (0x01 << i)) ? "Down" : "Up");
break;
}
}
#endif
input_report_key(ts->input_dev, touch_key_array[i], key_value & (0x01<<i));
}
touch_num = 0;
pre_touch = 0;
}
#endif
pre_key = key_value;
GTP_DEBUG("pre_touch:%02x, finger:%02x.", pre_touch, finger);
#if GTP_ICS_SLOT_REPORT
#if GTP_WITH_PEN
if (pre_pen && (touch_num == 0))
{
GTP_DEBUG("Pen touch UP(Slot)!");
input_report_key(ts->input_dev, BTN_TOOL_PEN, 0);
input_mt_slot(ts->input_dev, 5);
input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, -1);
pre_pen = 0;
}
#endif
if (pre_touch || touch_num)
{
s32 pos = 0;
u16 touch_index = 0;
u8 report_num = 0;
coor_data = &point_data[3];
if(touch_num)
{
id = coor_data[pos] & 0x0F;
#if GTP_WITH_PEN
id = coor_data[pos];
if ((id == 128))
{
GTP_DEBUG("Pen touch DOWN(Slot)!");
input_x = coor_data[pos + 1] | (coor_data[pos + 2] << 8);
input_y = coor_data[pos + 3] | (coor_data[pos + 4] << 8);
input_w = coor_data[pos + 5] | (coor_data[pos + 6] << 8);
input_report_key(ts->input_dev, BTN_TOOL_PEN, 1);
input_mt_slot(ts->input_dev, 5);
input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, 5);
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);
GTP_DEBUG("Pen/Stylus: (%d, %d)[%d]", input_x, input_y, input_w);
pre_pen = 1;
pre_touch = 0;
}
#endif
touch_index |= (0x01<<id);
}
GTP_DEBUG("id = %d,touch_index = 0x%x, pre_touch = 0x%x
",id, touch_index,pre_touch);
for (i = 0; i < GTP_MAX_TOUCH; i++)
{
#if GTP_WITH_PEN
if (pre_pen == 1)
{
break;
}
#endif
if (touch_index & (0x01<<i))
{
input_x = coor_data[pos + 1] | (coor_data[pos + 2] << 8);
input_y = coor_data[pos + 3] | (coor_data[pos + 4] << 8);
input_w = coor_data[pos + 5] | (coor_data[pos + 6] << 8);
gtp_touch_down(ts, id, input_x, input_y, input_w);
report_num++;
pre_touch |= 0x01 << i;
if(report_num < touch_num)
{
pos += 8;
id = coor_data[pos] & 0x0F;
touch_index |= (0x01<<id);
}
}
else
{
gtp_touch_up(ts, i);
pre_touch &= ~(0x01 << i);
}
}
}
#else
input_report_key(ts->input_dev, BTN_TOUCH, (touch_num || key_value));
if (touch_num)
{
for (i = 0; i < touch_num; i++)
{
coor_data = &point_data[i * 8 + 3];
id = coor_data[0]; // & 0x0F;
input_x = coor_data[1] | (coor_data[2] << 8);
input_y = coor_data[3] | (coor_data[4] << 8);
input_w = coor_data[5] | (coor_data[6] << 8);
#if GTP_WITH_PEN
if (id == 128)
{
GTP_DEBUG("Pen touch DOWN!");
input_report_key(ts->input_dev, BTN_TOOL_PEN, 1);
pre_pen = 1;
id = 0;
}
#endif
gtp_touch_down(ts, id, input_x, input_y, input_w);
}
}
else if (pre_touch)
{
#if GTP_WITH_PEN
if (pre_pen == 1)
{
GTP_DEBUG("Pen touch UP!");
input_report_key(ts->input_dev, BTN_TOOL_PEN, 0);
pre_pen = 0;
}
#endif
GTP_DEBUG("Touch Release!");
gtp_touch_up(ts, 0);
}
pre_touch = touch_num;
#endif
input_sync(ts->input_dev);
exit_work_func:
if(!ts->gtp_rawdiff_mode)
{
ret = gtp_i2c_write(ts->client, end_cmd, 3);
if (ret < 0)
{
GTP_INFO("I2C write end_cmd error!");
}
}
if (ts->use_irq)
{
gtp_irq_enable(ts);
}
}
/*******************************************************
Function:
Timer interrupt service routine for polling mode.
Input:
timer: timer struct pointer
Output:
Timer work mode.
HRTIMER_NORESTART: no restart mode
*********************************************************/
static enum hrtimer_restart goodix_ts_timer_handler(struct hrtimer *timer)
{
struct goodix_ts_data *ts = container_of(timer, struct goodix_ts_data, timer);
GTP_DEBUG_FUNC();
queue_work(goodix_wq, &ts->work);
hrtimer_start(&ts->timer, ktime_set(0, (GTP_POLL_TIME+6)*1000000), HRTIMER_MODE_REL);
return HRTIMER_NORESTART;
}
/*******************************************************
Function:
External interrupt service routine for interrupt mode.
Input:
irq: interrupt number.
dev_id: private data pointer
Output:
Handle Result.
IRQ_HANDLED: interrupt handled successfully
*********************************************************/
static irqreturn_t goodix_ts_irq_handler(int irq, void *dev_id)
{
struct goodix_ts_data *ts = dev_id;
GTP_DEBUG_FUNC();
gtp_irq_disable(ts);
queue_work(goodix_wq, &ts->work);
return IRQ_HANDLED;
}
/*******************************************************
Function:
Synchronization.
Input:
ms: synchronization time in millisecond.
Output:
None.
*******************************************************/
void gtp_int_sync(s32 ms)
{
GTP_GPIO_OUTPUT(GTP_INT_PORT, 0);
msleep(ms);
GTP_GPIO_AS_INT(GTP_INT_PORT);
}
/*******************************************************
Function:
Reset chip.
Input:
ms: reset time in millisecond
Output:
None.
*******************************************************/
void gtp_reset_guitar(struct i2c_client *client, s32 ms)
{
GTP_DEBUG_FUNC();
GTP_GPIO_OUTPUT(GTP_RST_PORT, 0); // begin select I2C slave addr
msleep(ms); // T2: > 10ms
// HIGH: 0x28/0x29, LOW: 0xBA/0xBB
GTP_GPIO_OUTPUT(GTP_INT_PORT, client->addr == 0x14);
msleep(2); // T3: > 100us
GTP_GPIO_OUTPUT(GTP_RST_PORT, 1);
msleep(6); // T4: > 5ms
GTP_GPIO_AS_INPUT(GTP_RST_PORT); // end select I2C slave addr
gtp_int_sync(50);
#if GTP_ESD_PROTECT
gtp_init_ext_watchdog(client);
#endif
}
#if GTP_SLIDE_WAKEUP
/*******************************************************
Function:
Enter doze mode for sliding wakeup.
Input:
ts: goodix tp private data
Output:
1: succeed, otherwise failed
*******************************************************/
static s8 gtp_enter_doze(struct goodix_ts_data *ts)
{
s8 ret = -1;
s8 retry = 0;
u8 i2c_control_buf[3] = {(u8)(GTP_REG_SLEEP >> 8), (u8)GTP_REG_SLEEP, 8};
GTP_DEBUG_FUNC();
#if GTP_DBL_CLK_WAKEUP
i2c_control_buf[2] = 0x09;
#endif
gtp_irq_disable(ts);
GTP_DEBUG("entering doze mode...");
while(retry++ < 5)
{
i2c_control_buf[0] = 0x80;
i2c_control_buf[1] = 0x46;
ret = gtp_i2c_write(ts->client, i2c_control_buf, 3);
if (ret < 0)
{
GTP_DEBUG("failed to set doze flag into 0x8046, %d", retry);
continue;
}
i2c_control_buf[0] = 0x80;
i2c_control_buf[1] = 0x40;
ret = gtp_i2c_write(ts->client, i2c_control_buf, 3);
if (ret > 0)
{
doze_status = DOZE_ENABLED;
GTP_INFO("GTP has been working in doze mode!");
gtp_irq_enable(ts);
return ret;
}
msleep(10);
}
GTP_ERROR("GTP send doze cmd failed.");
gtp_irq_enable(ts);
return ret;
}
#else
/*******************************************************
Function:
Enter sleep mode.
Input:
ts: private data.
Output:
Executive outcomes.
1: succeed, otherwise failed.
*******************************************************/
static s8 gtp_enter_sleep(struct goodix_ts_data * ts)
{
s8 ret = -1;
s8 retry = 0;
u8 i2c_control_buf[3] = {(u8)(GTP_REG_SLEEP >> 8), (u8)GTP_REG_SLEEP, 5};
GTP_DEBUG_FUNC();
GTP_GPIO_OUTPUT(GTP_INT_PORT, 0);
msleep(5);
while(retry++ < 5)
{
ret = gtp_i2c_write(ts->client, i2c_control_buf, 3);
if (ret > 0)
{
GTP_INFO("GTP enter sleep!");
return ret;
}
msleep(10);
}
GTP_ERROR("GTP send sleep cmd failed.");
return ret;
}
#endif
/*******************************************************
Function:
Wakeup from sleep.
Input:
ts: private data.
Output:
Executive outcomes.
>0: succeed, otherwise: failed.
*******************************************************/
static s8 gtp_wakeup_sleep(struct goodix_ts_data * ts)
{
u8 retry = 0;
s8 ret = -1;
GTP_DEBUG_FUNC();
#if GTP_POWER_CTRL_SLEEP
while(retry++ < 5)
{
gtp_reset_guitar(ts->client, 20);
ret = gtp_send_cfg(ts->client);
if (ret < 0)
{
GTP_INFO("Wakeup sleep send config failed!");
continue;
}
GTP_INFO("GTP wakeup sleep");
return 1;
}
#else
while(retry++ < 10)
{
#if GTP_SLIDE_WAKEUP
if (DOZE_WAKEUP != doze_status) // wakeup not by slide
{
gtp_reset_guitar(ts->client, 10);
}
else // wakeup by slide
{
doze_status = DOZE_DISABLED;
}
#else
if (chip_gt9xxs == 1)
{
gtp_reset_guitar(ts->client, 10);
}
else
{
GTP_GPIO_OUTPUT(GTP_INT_PORT, 1);
msleep(5);
}
#endif
ret = gtp_i2c_test(ts->client);
if (ret > 0)
{
GTP_INFO("GTP wakeup sleep.");
#if (!GTP_SLIDE_WAKEUP)
if (chip_gt9xxs == 0)
{
gtp_int_sync(25);
msleep(20);
#if GTP_ESD_PROTECT
gtp_init_ext_watchdog(ts->client);
#endif
}
#endif
return ret;
}
gtp_reset_guitar(ts->client, 20);
}
#endif
GTP_ERROR("GTP wakeup sleep failed.");
return ret;
}
/*******************************************************
Function:
Initialize gtp.
Input:
ts: goodix private data
Output:
Executive outcomes.
0: succeed, otherwise: failed
*******************************************************/
static s32 gtp_init_panel(struct goodix_ts_data *ts)
{
s32 ret = -1;
#if GTP_DRIVER_SEND_CFG
s32 i;
u8 check_sum = 0;
u8 opr_buf[16];
u8 sensor_id = 0;
u8 cfg_info_group1[] = CTP_CFG_GROUP1;
u8 cfg_info_group2[] = CTP_CFG_GROUP2;
u8 cfg_info_group3[] = CTP_CFG_GROUP3;
u8 cfg_info_group4[] = CTP_CFG_GROUP4;
u8 cfg_info_group5[] = CTP_CFG_GROUP5;
u8 cfg_info_group6[] = CTP_CFG_GROUP6;
u8 *send_cfg_buf[] = {cfg_info_group1, cfg_info_group2, cfg_info_group3,
cfg_info_group4, cfg_info_group5, cfg_info_group6};
u8 cfg_info_len[] = { CFG_GROUP_LEN(cfg_info_group1),
CFG_GROUP_LEN(cfg_info_group2),
CFG_GROUP_LEN(cfg_info_group3),
CFG_GROUP_LEN(cfg_info_group4),
CFG_GROUP_LEN(cfg_info_group5),
CFG_GROUP_LEN(cfg_info_group6)};
GTP_DEBUG("Config Groups\' Lengths: %d, %d, %d, %d, %d, %d",
cfg_info_len[0], cfg_info_len[1], cfg_info_len[2], cfg_info_len[3],
cfg_info_len[4], cfg_info_len[5]);
ret = gtp_i2c_read_dbl_check(ts->client, 0x41E4, opr_buf, 1);
if (SUCCESS == ret)
{
if (opr_buf[0] != 0xBE)
{
ts->fw_error = 1;
GTP_ERROR("Firmware error, no config sent!");
return -1;
}
}
if ((!cfg_info_len[1]) && (!cfg_info_len[2]) &&
(!cfg_info_len[3]) && (!cfg_info_len[4]) &&
(!cfg_info_len[5]))
{
sensor_id = 0;
}
else
{
ret = gtp_i2c_read_dbl_check(ts->client, GTP_REG_SENSOR_ID, &sensor_id, 1);
if (SUCCESS == ret)
{
if (sensor_id >= 0x06)
{
GTP_ERROR("Invalid sensor_id(0x%02X), No Config Sent!", sensor_id);
return -1;
}
}
else
{
GTP_ERROR("Failed to get sensor_id, No config sent!");
return -1;
}
}
<span style="color:#FF0000;"> GTP_DEBUG("Sensor_ID: %d", sensor_id);// id </span>
ts->gtp_cfg_len = cfg_info_len[sensor_id];
if (ts->gtp_cfg_len < GTP_CONFIG_MIN_LENGTH)
{
GTP_ERROR("Sensor_ID(%d) matches with NULL or INVALID CONFIG GROUP! NO Config Sent! You need to check you header file CFG_GROUP section!", sensor_id);
return -1;
}
ret = gtp_i2c_read_dbl_check(ts->client, GTP_REG_CONFIG_DATA, &opr_buf[0], 1);
if (ret == SUCCESS)
{
GTP_DEBUG("CFG_GROUP%d Config Version: %d, 0x%02X; IC Config Version: %d, 0x%02X", sensor_id+1,
send_cfg_buf[sensor_id][0], send_cfg_buf[sensor_id][0], opr_buf[0], opr_buf[0]);
if (opr_buf[0] < 90)
{
grp_cfg_version = send_cfg_buf[sensor_id][0]; // backup group config version
send_cfg_buf[sensor_id][0] = 0x00;
ts->fixed_cfg = 0;
}
else // treated as fixed config, not send config
{
GTP_INFO("Ic fixed config with config version(%d, 0x%02X)", opr_buf[0], opr_buf[0]);
ts->fixed_cfg = 1;
}
}
else
{
GTP_ERROR("Failed to get ic config version!No config sent!");
return -1;
}
memset(&config[GTP_ADDR_LENGTH], 0, GTP_CONFIG_MAX_LENGTH);
memcpy(&config[GTP_ADDR_LENGTH], send_cfg_buf[sensor_id], ts->gtp_cfg_len);
#if GTP_CUSTOM_CFG
config[RESOLUTION_LOC] = (u8)GTP_MAX_WIDTH;
config[RESOLUTION_LOC + 1] = (u8)(GTP_MAX_WIDTH>>8);
config[RESOLUTION_LOC + 2] = (u8)GTP_MAX_HEIGHT;
config[RESOLUTION_LOC + 3] = (u8)(GTP_MAX_HEIGHT>>8);
if (GTP_INT_TRIGGER == 0) //RISING
{
config[TRIGGER_LOC] &= 0xfe;
}
else if (GTP_INT_TRIGGER == 1) //FALLING
{
config[TRIGGER_LOC] |= 0x01;
}
#endif // GTP_CUSTOM_CFG
check_sum = 0;
for (i = GTP_ADDR_LENGTH; i < ts->gtp_cfg_len; i++)
{
check_sum += config[i];
}
config[ts->gtp_cfg_len] = (~check_sum) + 1;
#else // DRIVER NOT SEND CONFIG
ts->gtp_cfg_len = GTP_CONFIG_MAX_LENGTH;
ret = gtp_i2c_read(ts->client, config, ts->gtp_cfg_len + GTP_ADDR_LENGTH);
if (ret < 0)
{
GTP_ERROR("Read Config Failed, Using Default Resolution & INT Trigger!");
ts->abs_x_max = GTP_MAX_WIDTH;
ts->abs_y_max = GTP_MAX_HEIGHT;
ts->int_trigger_type = GTP_INT_TRIGGER;
}
#endif // GTP_DRIVER_SEND_CFG
GTP_DEBUG_FUNC();
if ((ts->abs_x_max == 0) && (ts->abs_y_max == 0))
{
ts->abs_x_max = (config[RESOLUTION_LOC + 1] << 8) + config[RESOLUTION_LOC];
ts->abs_y_max = (config[RESOLUTION_LOC + 3] << 8) + config[RESOLUTION_LOC + 2];
ts->int_trigger_type = (config[TRIGGER_LOC]) & 0x03;
}
ret = gtp_send_cfg(ts->client);
if (ret < 0)
{
GTP_ERROR("Send config error.");
}
GTP_DEBUG("X_MAX = %d, Y_MAX = %d, TRIGGER = 0x%02x",
ts->abs_x_max,ts->abs_y_max,ts->int_trigger_type);
msleep(10);
return 0;
}
/*******************************************************
Function:
Read chip version.
Input:
client: i2c device
version: buffer to keep ic firmware version
Output:
read operation return.
2: succeed, otherwise: failed
*******************************************************/
s32 gtp_read_version(struct i2c_client *client, u16* version)
{
s32 ret = -1;
u8 buf[8] = {GTP_REG_VERSION >> 8, GTP_REG_VERSION & 0xff};
GTP_DEBUG_FUNC();
ret = gtp_i2c_read(client, buf, sizeof(buf));
if (ret < 0)
{
GTP_ERROR("GTP read version failed");
return ret;
}
if (version)
{
*version = (buf[7] << 8) | buf[6];
}
if (buf[5] == 0x00)
{
GTP_INFO("IC Version: %c%c%c_%02x%02x", buf[2], buf[3], buf[4], buf[7], buf[6]);
}
else
{
if (buf[5] == 'S' || buf[5] == 's')
{
chip_gt9xxs = 1;
}
GTP_INFO("IC Version: %c%c%c%c_%02x%02x", buf[2], buf[3], buf[4], buf[5], buf[7], buf[6]);
}
return ret;
}
/*******************************************************
Function:
I2c test Function.
Input:
client:i2c client.
Output:
Executive outcomes.
2: succeed, otherwise failed.
*******************************************************/
static s8 gtp_i2c_test(struct i2c_client *client)
{
u8 test[3] = {GTP_REG_CONFIG_DATA >> 8, GTP_REG_CONFIG_DATA & 0xff};
u8 retry = 0;
s8 ret = -1;
GTP_DEBUG_FUNC();
while(retry++ < 5)
{
ret = gtp_i2c_read(client, test, 3);
if (ret > 0)
{
return ret;
}
GTP_ERROR("GTP i2c test failed time %d.",retry);
msleep(10);
}
return ret;
}
/*******************************************************
Function:
Request gpio(INT & RST) ports.
Input:
ts: private data.
Output:
Executive outcomes.
>= 0: succeed, < 0: failed
*******************************************************/
static s8 gtp_request_io_port(struct goodix_ts_data *ts)
{
s32 ret = 0;
ret = GTP_GPIO_REQUEST(GTP_INT_PORT, "GTP_INT_IRQ");
if (ret < 0)
{
GTP_ERROR("Failed to request GPIO:%d, ERRNO:%d", (s32)GTP_INT_PORT, ret);
ret = -ENODEV;
}
else
{
GTP_GPIO_AS_INT(GTP_INT_PORT);
ts->client->irq = GTP_INT_IRQ;
}
ret = GTP_GPIO_REQUEST(GTP_RST_PORT, "GTP_RST_PORT");
if (ret < 0)
{
GTP_ERROR("Failed to request GPIO:%d, ERRNO:%d",(s32)GTP_RST_PORT,ret);
ret = -ENODEV;
}
GTP_GPIO_AS_INPUT(GTP_RST_PORT);
gtp_reset_guitar(ts->client, 20);
if(ret < 0)
{
GTP_GPIO_FREE(GTP_RST_PORT);
GTP_GPIO_FREE(GTP_INT_PORT);
}
return ret;
}
/*******************************************************
Function:
Request interrupt.
Input:
ts: private data.
Output:
Executive outcomes.
0: succeed, -1: failed.
*******************************************************/
static s8 gtp_request_irq(struct goodix_ts_data *ts)
{
s32 ret = -1;
const u8 irq_table[] = GTP_IRQ_TAB;
GTP_DEBUG("INT trigger type:%x", ts->int_trigger_type);
ret = request_irq(ts->client->irq,
goodix_ts_irq_handler,
irq_table[ts->int_trigger_type],
ts->client->name,
ts);
if (ret)
{
GTP_ERROR("Request IRQ failed!ERRNO:%d.", ret);
GTP_GPIO_AS_INPUT(GTP_INT_PORT);
GTP_GPIO_FREE(GTP_INT_PORT);
hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
ts->timer.function = goodix_ts_timer_handler;
hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
return -1;
}
else
{
gtp_irq_disable(ts);
ts->use_irq = 1;
return 0;
}
}
/*******************************************************
Function:
Request input device Function.
Input:
ts:private data.
Output:
Executive outcomes.
0: succeed, otherwise: failed.
*******************************************************/
static s8 gtp_request_input_dev(struct goodix_ts_data *ts)
{
s8 ret = -1;
s8 phys[32];
#if GTP_HAVE_TOUCH_KEY
u8 index = 0;
#endif
GTP_DEBUG_FUNC();
ts->input_dev = input_allocate_device();
if (ts->input_dev == NULL)
{
GTP_ERROR("Failed to allocate input device.");
return -ENOMEM;
}
ts->input_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) ;
#if GTP_ICS_SLOT_REPORT
__set_bit(INPUT_PROP_DIRECT, ts->input_dev->propbit);
input_mt_init_slots(ts->input_dev, 10); // in case of "out of memory"
#else
ts->input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
#endif
#if GTP_HAVE_TOUCH_KEY
for (index = 0; index < GTP_MAX_KEY_NUM; index++)
{
input_set_capability(ts->input_dev, EV_KEY, touch_key_array[index]);
}
#endif
#if GTP_SLIDE_WAKEUP
input_set_capability(ts->input_dev, EV_KEY, KEY_POWER);
#endif
#if GTP_WITH_PEN
// pen support
__set_bit(BTN_TOOL_PEN, ts->input_dev->keybit);
__set_bit(INPUT_PROP_DIRECT, ts->input_dev->propbit);
__set_bit(INPUT_PROP_POINTER, ts->input_dev->propbit);
#endif
#if GTP_CHANGE_X2Y
GTP_SWAP(ts->abs_x_max, ts->abs_y_max);
#endif
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);
input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
input_set_abs_params(ts->input_dev, ABS_MT_TRACKING_ID, 0, 255, 0, 0);
sprintf(phys, "input/ts");
ts->input_dev->name = goodix_ts_name;
ts->input_dev->phys = phys;
ts->input_dev->id.bustype = BUS_I2C;
ts->input_dev->id.vendor = 0xDEAD;
ts->input_dev->id.product = 0xBEEF;
ts->input_dev->id.version = 10427;
ret = input_register_device(ts->input_dev);
if (ret)
{
GTP_ERROR("Register %s input device failed", ts->input_dev->name);
return -ENODEV;
}
#ifdef CONFIG_HAS_EARLYSUSPEND
ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
ts->early_suspend.suspend = goodix_ts_early_suspend;
ts->early_suspend.resume = goodix_ts_late_resume;
register_early_suspend(&ts->early_suspend);
#endif
return 0;
}
/*******************************************************
Function:
I2c probe.
Input:
client: i2c device struct.
id: device id.
Output:
Executive outcomes.
0: succeed.
*******************************************************/
static int goodix_ts_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
s32 ret = -1;
struct goodix_ts_data *ts;
u16 version_info;
GTP_DEBUG_FUNC();
//do NOT remove these logs
GTP_INFO("GTP Driver Version: %s", GTP_DRIVER_VERSION);
GTP_INFO("GTP Driver Built@%s, %s", __TIME__, __DATE__);
GTP_INFO("GTP I2C Address: 0x%02x", client->addr);
i2c_connect_client = client;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
{
GTP_ERROR("I2C check functionality failed.");
return -ENODEV;
}
ts = kzalloc(sizeof(*ts), GFP_KERNEL);
if (ts == NULL)
{
GTP_ERROR("Alloc GFP_KERNEL memory failed.");
return -ENOMEM;
}
memset(ts, 0, sizeof(*ts));
INIT_WORK(&ts->work, goodix_ts_work_func);
ts->client = client;
spin_lock_init(&ts->irq_lock); // 2.6.39 later
// ts->irq_lock = SPIN_LOCK_UNLOCKED; // 2.6.39 & before
i2c_set_clientdata(client, ts);
ts->gtp_rawdiff_mode = 0;
ret = gtp_request_io_port(ts);
if (ret < 0)
{
GTP_ERROR("GTP request IO port failed.");
kfree(ts);
return ret;
}
ret = gtp_i2c_test(client);
if (ret < 0)
{
GTP_ERROR("I2C communication ERROR!");
}
#if GTP_AUTO_UPDATE
ret = gup_init_update_proc(ts);
if (ret < 0)
{
GTP_ERROR("Create update thread error.");
}
#endif
ret = gtp_init_panel(ts);
if (ret < 0)
{
GTP_ERROR("GTP init panel failed.");
ts->abs_x_max = GTP_MAX_WIDTH;
ts->abs_y_max = GTP_MAX_HEIGHT;
ts->int_trigger_type = GTP_INT_TRIGGER;
}
ret = gtp_request_input_dev(ts);
if (ret < 0)
{
GTP_ERROR("GTP request input dev failed");
}
ret = gtp_request_irq(ts);
if (ret < 0)
{
GTP_INFO("GTP works in polling mode.");
}
else
{
GTP_INFO("GTP works in interrupt mode.");
}
ret = gtp_read_version(client, &version_info);
if (ret < 0)
{
GTP_ERROR("Read version failed.");
}
if (ts->use_irq)
{
gtp_irq_enable(ts);
}
#if GTP_CREATE_WR_NODE
init_wr_node(client);
#endif
#if GTP_ESD_PROTECT
gtp_esd_switch(client, SWITCH_ON);
#endif
return 0;
}
/*******************************************************
Function:
Goodix touchscreen driver release function.
Input:
client: i2c device struct.
Output:
Executive outcomes. 0---succeed.
*******************************************************/
static int goodix_ts_remove(struct i2c_client *client)
{
struct goodix_ts_data *ts = i2c_get_clientdata(client);
GTP_DEBUG_FUNC();
#ifdef CONFIG_HAS_EARLYSUSPEND
unregister_early_suspend(&ts->early_suspend);
#endif
#if GTP_CREATE_WR_NODE
uninit_wr_node();
#endif
#if GTP_ESD_PROTECT
destroy_workqueue(gtp_esd_check_workqueue);
#endif
if (ts)
{
if (ts->use_irq)
{
GTP_GPIO_AS_INPUT(GTP_INT_PORT);
GTP_GPIO_FREE(GTP_INT_PORT);
free_irq(client->irq, ts);
}
else
{
hrtimer_cancel(&ts->timer);
}
}
GTP_INFO("GTP driver removing...");
i2c_set_clientdata(client, NULL);
input_unregister_device(ts->input_dev);
kfree(ts);
return 0;
}
#ifdef CONFIG_HAS_EARLYSUSPEND
/*******************************************************
Function:
Early suspend function.
Input:
h: early_suspend struct.
Output:
None.
*******************************************************/
static void goodix_ts_early_suspend(struct early_suspend *h)
{
struct goodix_ts_data *ts;
s8 ret = -1;
ts = container_of(h, struct goodix_ts_data, early_suspend);
GTP_DEBUG_FUNC();
#if GTP_ESD_PROTECT
ts->gtp_is_suspend = 1;
gtp_esd_switch(ts->client, SWITCH_OFF);
#endif
#if GTP_SLIDE_WAKEUP
ret = gtp_enter_doze(ts);
#else
if (ts->use_irq)
{
gtp_irq_disable(ts);
}
else
{
hrtimer_cancel(&ts->timer);
}
ret = gtp_enter_sleep(ts);
#endif
if (ret < 0)
{
GTP_ERROR("GTP early suspend failed.");
}
// to avoid waking up while not sleeping
// delay 48 + 10ms to ensure reliability
msleep(58);
}
/*******************************************************
Function:
Late resume function.
Input:
h: early_suspend struct.
Output:
None.
*******************************************************/
static void goodix_ts_late_resume(struct early_suspend *h)
{
struct goodix_ts_data *ts;
s8 ret = -1;
ts = container_of(h, struct goodix_ts_data, early_suspend);
GTP_DEBUG_FUNC();
ret = gtp_wakeup_sleep(ts);
#if GTP_SLIDE_WAKEUP
doze_status = DOZE_DISABLED;
#endif
if (ret < 0)
{
GTP_ERROR("GTP later resume failed.");
}
if (ts->use_irq)
{
gtp_irq_enable(ts);
}
else
{
hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
}
#if GTP_ESD_PROTECT
ts->gtp_is_suspend = 0;
gtp_esd_switch(ts->client, SWITCH_ON);
#endif
}
#endif
#if GTP_ESD_PROTECT
/*******************************************************
Function:
switch on & off esd delayed work
Input:
client: i2c device
on: SWITCH_ON / SWITCH_OFF
Output:
void
*********************************************************/
void gtp_esd_switch(struct i2c_client *client, s32 on)
{
struct goodix_ts_data *ts;
ts = i2c_get_clientdata(client);
if (SWITCH_ON == on) // switch on esd
{
if (!ts->esd_running)
{
ts->esd_running = 1;
GTP_INFO("Esd started");
queue_delayed_work(gtp_esd_check_workqueue, >p_esd_check_work, GTP_ESD_CHECK_CIRCLE);
}
}
else // switch off esd
{
if (ts->esd_running)
{
ts->esd_running = 0;
GTP_INFO("Esd cancelled");
cancel_delayed_work_sync(>p_esd_check_work);
}
}
}
/*******************************************************
Function:
Initialize external watchdog for esd protect
Input:
client: i2c device.
Output:
result of i2c write operation.
1: succeed, otherwise: failed
*********************************************************/
static s32 gtp_init_ext_watchdog(struct i2c_client *client)
{
u8 opr_buffer[4] = {0x80, 0x40, 0xAA, 0xAA};
struct i2c_msg msg; // in case of recursively reset by calling gtp_i2c_write
s32 ret = -1;
s32 retries = 0;
GTP_DEBUG("Init external watchdog...");
GTP_DEBUG_FUNC();
msg.flags = !I2C_M_RD;
msg.addr = client->addr;
msg.len = 4;
msg.buf = opr_buffer;
while(retries < 5)
{
ret = i2c_transfer(client->adapter, &msg, 1);
if (ret == 1)
{
return 1;
}
retries++;
}
if (retries >= 5)
{
GTP_ERROR("init external watchdog failed!");
}
return 0;
}
/*******************************************************
Function:
Esd protect function.
Added external watchdog by meta, 2013/03/07
Input:
work: delayed work
Output:
None.
*******************************************************/
static void gtp_esd_check_func(struct work_struct *work)
{
s32 i;
s32 ret = -1;
struct goodix_ts_data *ts = NULL;
u8 test[4] = {0x80, 0x40};
GTP_DEBUG_FUNC();
ts = i2c_get_clientdata(i2c_connect_client);
if (ts->gtp_is_suspend)
{
ts->esd_running = 0;
GTP_INFO("Esd terminated!");
return;
}
for (i = 0; i < 3; i++)
{
ret = gtp_i2c_read(ts->client, test, 4);
GTP_DEBUG("0x8040 = 0x%02X, 0x8041 = 0x%02X", test[2], test[3]);
if ((ret < 0))
{
// IIC communication problem
continue;
}
else
{
if ((test[2] == 0xAA) || (test[3] != 0xAA))
{
// IC works abnormally..
i = 3;
break;
}
else
{
// IC works normally, Write 0x8040 0xAA, feed the dog
test[2] = 0xAA;
gtp_i2c_write(ts->client, test, 3);
break;
}
}
}
if (i >= 3)
{
GTP_ERROR("IC Working ABNORMALLY, Resetting Guitar...");
gtp_reset_guitar(ts->client, 50);
}
if(!ts->gtp_is_suspend)
{
queue_delayed_work(gtp_esd_check_workqueue, >p_esd_check_work, GTP_ESD_CHECK_CIRCLE);
}
else
{
GTP_INFO("Esd terminated!");
ts->esd_running = 0;
}
return;
}
#endif
static const struct i2c_device_id goodix_ts_id[] = {
{ GTP_I2C_NAME, 0 },
{ }
};
static struct i2c_driver goodix_ts_driver = {
.probe = goodix_ts_probe,
.remove = goodix_ts_remove,
#ifndef CONFIG_HAS_EARLYSUSPEND
.suspend = goodix_ts_early_suspend,
.resume = goodix_ts_late_resume,
#endif
.id_table = goodix_ts_id,
.driver = {
.name = GTP_I2C_NAME,
.owner = THIS_MODULE,
},
};
/*******************************************************
Function:
Driver Install function.
Input:
None.
Output:
Executive Outcomes. 0---succeed.
********************************************************/
static int __devinit goodix_ts_init(void)
{
s32 ret;
GTP_DEBUG_FUNC();
GTP_INFO("GTP driver installing...");
goodix_wq = create_singlethread_workqueue("goodix_wq");
if (!goodix_wq)
{
GTP_ERROR("Creat workqueue failed.");
return -ENOMEM;
}
#if GTP_ESD_PROTECT
INIT_DELAYED_WORK(>p_esd_check_work, gtp_esd_check_func);
gtp_esd_check_workqueue = create_workqueue("gtp_esd_check");
#endif
ret = i2c_add_driver(&goodix_ts_driver);
return ret;
}
/*******************************************************
Function:
Driver uninstall function.
Input:
None.
Output:
Executive Outcomes. 0---succeed.
********************************************************/
static void __exit goodix_ts_exit(void)
{
GTP_DEBUG_FUNC();
GTP_INFO("GTP driver exited.");
i2c_del_driver(&goodix_ts_driver);
if (goodix_wq)
{
destroy_workqueue(goodix_wq);
}
}
late_initcall(goodix_ts_init);
module_exit(goodix_ts_exit);
MODULE_DESCRIPTION("GTP Series Driver");
MODULE_LICENSE("GPL");</span>gt9xx. h 의 내용 은?
/* drivers/input/touchscreen/gt9xx.h
*
* 2010 - 2013 Goodix Technology.
*
* 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 a reference
* to you, when you are integrating the GOODiX's CTP IC into your system,
* 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.
*
*/
#ifndef _GOODIX_GT9XX_H_
#define _GOODIX_GT9XX_H_
#include <linux/kernel.h>
#include <linux/hrtimer.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/proc_fs.h>
#include <linux/string.h>
#include <asm/uaccess.h>
#include <linux/vmalloc.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <mach/gpio.h>
#include <linux/earlysuspend.h>
struct goodix_ts_data {
spinlock_t irq_lock;
struct i2c_client *client;
struct input_dev *input_dev;
struct hrtimer timer;
struct work_struct work;
struct early_suspend early_suspend;
s32 irq_is_disable;
s32 use_irq;
u16 abs_x_max;
u16 abs_y_max;
u8 max_touch_num;
u8 int_trigger_type;
u8 green_wake_mode;
u8 chip_type;
u8 enter_update;
u8 gtp_is_suspend;
u8 gtp_rawdiff_mode;
u8 gtp_cfg_len;
u8 fixed_cfg;
u8 esd_running;
u8 fw_error;
};
extern u16 show_len;
extern u16 total_len;
//***************************PART1:ON/OFF define*******************************
#define GTP_CUSTOM_CFG 0
<span style="color:#ff0000;">#define GTP_CHANGE_X2Y 0 // X,Y ， ， </span>
#define GTP_DRIVER_SEND_CFG 1
#define GTP_HAVE_TOUCH_KEY 0
#define GTP_POWER_CTRL_SLEEP 0
<span style="color:#ff0000;">#define GTP_ICS_SLOT_REPORT 0 // ， rk3188 １</span>
<span style="color:#ff0000;">#define GTP_AUTO_UPDATE 1 // auto updated by .bin file as default , </span>
#define GTP_HEADER_FW_UPDATE 0 // auto updated by head_fw_array in gt9xx_firmware.h, function together with GTP_AUTO_UPDATE
#define GTP_CREATE_WR_NODE 1
#define GTP_ESD_PROTECT 0
#define GTP_WITH_PEN 0
#define GTP_SLIDE_WAKEUP 0
#define GTP_DBL_CLK_WAKEUP 0 // double-click wakeup, function together with GTP_SLIDE_WAKEUP
#define GTP_DEBUG_ON 1
#define GTP_DEBUG_ARRAY_ON 0
#define GTP_DEBUG_FUNC_ON 0
//*************************** PART2:TODO define **********************************
// STEP_1(REQUIRED): Define Configuration Information Group(s)
// Sensor_ID Map:
/* sensor_opt1 sensor_opt2 Sensor_ID
GND GND 0
VDDIO GND 1
NC GND 2
GND NC/300K 3
VDDIO NC/300K 4
NC NC/300K 5
*/
// TODO: define your own default or for Sensor_ID == 0 config here.
// The predefined one is just a sample config, which is not suitable for your tp in most cases.
#define CTP_CFG_GROUP1 {\
0x41,0x1C,0x02,0xC0,0x03,0x0A,0x05,0x01,0x01,0x0F,\
0x23,0x0F,0x5F,0x41,0x03,0x05,0x00,0x00,0x00,0x00,\
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x91,0x00,0x0A,\
0x28,0x00,0xB8,0x0B,0x00,0x00,0x00,0x9A,0x03,0x25,\
0x00,0x00,0x00,0x00,0x00,0x03,0x64,0x32,0x00,0x00,\
0x00,0x32,0x8C,0x94,0x05,0x01,0x05,0x00,0x00,0x96,\
0x0C,0x22,0xD8,0x0E,0x23,0x56,0x11,0x25,0xFF,0x13,\
0x28,0xA7,0x15,0x2E,0x00,0x00,0x10,0x30,0x48,0x00,\
0x56,0x4A,0x3A,0xFF,0xFF,0x16,0x00,0x00,0x00,0x00,\
0x00,0x01,0x1B,0x14,0x0D,0x19,0x00,0x00,0x01,0x00,\
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\
0x00,0x00,0x1A,0x18,0x16,0x14,0x12,0x10,0x0E,0x0C,\
0x0A,0x08,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,\
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,\
0xFF,0xFF,0x1D,0x1E,0x1F,0x20,0x22,0x24,0x28,0x29,\
0x0C,0x0A,0x08,0x00,0x02,0x04,0x05,0x06,0x0E,0xFF,\
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,\
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,\
0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,\
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\
0x00,0x00,0x00,0x00,0x00,0x00,0x91,0x01\
}
// TODO: define your config for Sensor_ID == 1 here, if needed
#define CTP_CFG_GROUP2 {\
}
// TODO: define your config for Sensor_ID == 2 here, if needed
#define CTP_CFG_GROUP3 {\
}
// TODO: define your config for Sensor_ID == 3 here, if needed
#define CTP_CFG_GROUP4 {\
}
// TODO: define your config for Sensor_ID == 4 here, if needed
#define CTP_CFG_GROUP5 {\
}
// TODO: define your config for Sensor_ID == 5 here, if needed
#define CTP_CFG_GROUP6 {\
}
// STEP_2(REQUIRED): Customize your I/O ports & I/O operations
<span style="color:#ff0000;">#define GTP_RST_PORT S5PV210_GPJ3(6) //
#define GTP_INT_PORT S5PV210_GPH1(3) // <span style="font-family: Arial, Helvetica, sans-serif;"> </span></span>
#define GTP_INT_IRQ gpio_to_irq(GTP_INT_PORT)
#define GTP_INT_CFG S3C_GPIO_SFN(0xF)
#define GTP_GPIO_AS_INPUT(pin) do{\ // ，
gpio_direction_input(pin);\
s3c_gpio_setpull(pin, S3C_GPIO_PULL_NONE);\
}while(0)
#define GTP_GPIO_AS_INT(pin) do{\
GTP_GPIO_AS_INPUT(pin);\
s3c_gpio_cfgpin(pin, GTP_INT_CFG);\
}while(0)</span>
#define GTP_GPIO_GET_VALUE(pin) gpio_get_value(pin)
#define GTP_GPIO_OUTPUT(pin,level) gpio_direction_output(pin,level)
#define GTP_GPIO_REQUEST(pin, label) gpio_request(pin, label)
#define GTP_GPIO_FREE(pin) gpio_free(pin)
#define GTP_IRQ_TAB {IRQ_TYPE_EDGE_RISING, IRQ_TYPE_EDGE_FALLING, IRQ_TYPE_LEVEL_LOW, IRQ_TYPE_LEVEL_HIGH}
// STEP_3(optional): Specify your special config info if needed
#if GTP_CUSTOM_CFG
#define GTP_MAX_HEIGHT 800
#define GTP_MAX_WIDTH 480
#define GTP_INT_TRIGGER 0 // 0: Rising 1: Falling
#else
#define GTP_MAX_HEIGHT 4096
#define GTP_MAX_WIDTH 4096
#define GTP_INT_TRIGGER 1
#endif
#define GTP_MAX_TOUCH 5
#define GTP_ESD_CHECK_CIRCLE 2000 // jiffy: ms
// STEP_4(optional): If keys are available and reported as keys, config your key info here
#if GTP_HAVE_TOUCH_KEY
#define GTP_KEY_TAB {KEY_MENU, KEY_HOME, KEY_BACK}
#endif
//***************************PART3:OTHER define*********************************
#define GTP_DRIVER_VERSION "V1.8<2013/06/08>"
#define GTP_I2C_NAME "Goodix-TS"
#define GTP_POLL_TIME 10 // jiffy: ms
#define GTP_ADDR_LENGTH 2
#define GTP_CONFIG_MIN_LENGTH 186
#define GTP_CONFIG_MAX_LENGTH 240
#define FAIL 0
#define SUCCESS 1
#define SWITCH_OFF 0
#define SWITCH_ON 1
// Registers define
#define GTP_READ_COOR_ADDR 0x814E
#define GTP_REG_SLEEP 0x8040
#define GTP_REG_SENSOR_ID 0x814A
#define GTP_REG_CONFIG_DATA 0x8047
#define GTP_REG_VERSION 0x8140
#define RESOLUTION_LOC 3
#define TRIGGER_LOC 8
#define CFG_GROUP_LEN(p_cfg_grp) (sizeof(p_cfg_grp) / sizeof(p_cfg_grp[0]))
// Log define
#define GTP_INFO(fmt,arg...) printk("<<-GTP-INFO->> "fmt"
",##arg)
#define GTP_ERROR(fmt,arg...) printk("<<-GTP-ERROR->> "fmt"
",##arg)
#define GTP_DEBUG(fmt,arg...) do{\
if(GTP_DEBUG_ON)\
printk("<<-GTP-DEBUG->> [%d]"fmt"
",__LINE__, ##arg);\
}while(0)
#define GTP_DEBUG_ARRAY(array, num) do{\
s32 i;\
u8* a = array;\
if(GTP_DEBUG_ARRAY_ON)\
{\
printk("<<-GTP-DEBUG-ARRAY->>
");\
for (i = 0; i < (num); i++)\
{\
printk("%02x ", (a)[i]);\
if ((i + 1 ) %10 == 0)\
{\
printk("
");\
}\
}\
printk("
");\
}\
}while(0)
#define GTP_DEBUG_FUNC() do{\
if(GTP_DEBUG_FUNC_ON)\
printk("<<-GTP-FUNC->> Func:%s@Line:%d
",__func__,__LINE__);\
}while(0)
#define GTP_SWAP(x, y) do{\
typeof(x) z = x;\
x = y;\
y = z;\
}while (0)
//*****************************End of Part III********************************
#endif /* _GOODIX_GT9XX_H_ */Makefile 파일 컴 파일
ifeq ($(KERNELRELEASE),) #
KERNELDIR ?= /usr/local/driver # Linux
PWD := $(shell pwd) #
MODULE_NAME := touchsreen # # ： ！
RESMAIN_CORE_OBJS := gt9xx.o # （ init exit）
RESMAIN_GLUE_OBJS := goodix_tool.o gt9xx_update.o #
modules: #
$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
#-C Makefile ， 。
#-M ， 。
modules_install:
$(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
clean:
rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions modules.order Module.symvers
.PHONY: modules modules_install clean
else # Makefile ，
MODULE_NAME := touchsreen # # ： ！
RESMAIN_CORE_OBJS := gt9xx.o # （ init exit）
RESMAIN_GLUE_OBJS := goodix_tool.o gt9xx_update.o #
touchsreen-objs := $(RESMAIN_GLUE_OBJS) $(RESMAIN_CORE_OBJS) #xxx-objs :=
obj-m := touchsreen.o # xxx-objs ecat.o， ecat.ko
endif
그리고 판 급 파일 에 이 도로 IIC 의 장치 정 보 를 등록 합 니 다.
{ .type = "Goodix-TS", .addr = 0x14, .flags = 0, },
goodix ts probe 함수 가 달 렸 습 니 다. 장치 와 구동 이 일치 하 는 것 을 설명 합 니 다.
이 어 터치 스크린 을 누 르 면 중단 이 감지 되 었 는 지, 중단 되 지 않 았 다 면 IO 포트 에 출장 이 설정 되 어 있 는 지 확인 하 세 요.
이로써 GT9xx 구동 이식 에 성공 했다.
참고 자료
http://blog.csdn.net/wocao1226/article/details/42459673
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