| /* 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: andrew@goodix.com, meta@goodix.com |
| * 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\n ", 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; |
| |
| 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\n",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); |
| pre_touch |= 0x01 << i; |
| |
| 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; |
| } |
| } |
| GTP_DEBUG("Sensor_ID: %d", sensor_id); |
| |
| 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"); |