触摸屏GT9xx移植
来源：互联网 发布：吉他收费软件 编辑：程序博客网 时间：2024/05/17 09:25
下载GT9xx的源码http://download.csdn.net/detail/u012724126/6506027
解压并编写Makefile文件，gt9xx.c的源码并不需要修改，gt9xx.h需根据平台和触摸屏进行一定的修改。
gt9xx.c的内容为
/* 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>#endifstatic 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 #endifstatic 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_EARLYSUSPENDstatic void goodix_ts_early_suspend(struct early_suspend *h);static void goodix_ts_late_resume(struct early_suspend *h);#endif #if GTP_CREATE_WR_NODEextern s32 init_wr_node(struct i2c_client*);extern void uninit_wr_node(void);#endif#if GTP_AUTO_UPDATEextern u8 gup_init_update_proc(struct goodix_ts_data *);#endif#if GTP_ESD_PROTECTstatic 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_WAKEUPtypedef 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);#endifstatic u8 chip_gt9xxs = 0; // true if ic is gt9xxs, like gt915su8 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 countOutput: 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 countOutput: 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 resultsInput: client: i2c device addr: operate address rxbuf: read data to store, if compare successful len: bytes to readOutput: 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 functionInput: ts: goodix i2c_client private dataOutput: 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 functionInput: ts: goodix i2c_client private dataOutput: 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 pressureOutput: 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 eventInput: ts: goodix i2c_client private dataOutput: 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 functionInput: work: work struct of goodix_workqueueOutput: 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; 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\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); 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 pointerOutput: 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 pointerOutput: 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 millisecondOutput: 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 dataOutput: 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 dataOutput: 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);//根据该id发不同的配置</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 versionOutput: 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 workInput: client: i2c device on: SWITCH_ON / SWITCH_OFFOutput: 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 protectInput: 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, 2013/03/07Input: work: delayed workOutput: 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;}#endifstatic 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");gt9xx.h的内容为
/* 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#define GTP_CHANGE_X2Y 0 //是否打开X,Y坐标交换，这个比较容易判断，在屏幕上滑动一下便可知道#define GTP_DRIVER_SEND_CFG 1#define GTP_HAVE_TOUCH_KEY 0#define GTP_POWER_CTRL_SLEEP 0#define GTP_ICS_SLOT_REPORT 0 //坐标点汇报方式，在rk3188上需定义为１#define GTP_AUTO_UPDATE 1 // auto updated by .bin file as default 由于不需要升级，可屏蔽#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#define GTP_RST_PORT S5PV210_GPJ3(6) //复位引脚#define GTP_INT_PORT S5PV210_GPH1(3) //中断引脚#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{\ //平台相关部分，需自己修改 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)#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"\n",##arg)#define GTP_ERROR(fmt,arg...) printk("<<-GTP-ERROR->> "fmt"\n",##arg)#define GTP_DEBUG(fmt,arg...) do{\ if(GTP_DEBUG_ON)\ printk("<<-GTP-DEBUG->> [%d]"fmt"\n",__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->>\n");\ for (i = 0; i < (num); i++)\ {\ printk("%02x ", (a)[i]);\ if ((i + 1 ) %10 == 0)\ {\ printk("\n");\ }\ }\ printk("\n");\ }\ }while(0)#define GTP_DEBUG_FUNC() do{\ if(GTP_DEBUG_FUNC_ON)\ printk("<<-GTP-FUNC->> Func:%s@Line:%d\n",__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_ */编译Makefile文件
ifeq ($(KERNELRELEASE),) KERNELDIR_OUT ?= /home/w/M8974AAAAANLYD4275/out/target/product/msm8974/obj/KERNEL_OBJDBG_CROSS_COMPILE ?= /home/w/M8974AAAAANLYD4275/prebuilts/gcc/linux-x86/arm/arm-eabi-4.8/bin/arm-eabi- PWD := $(shell pwd) modules: #编译为驱动模块 $(MAKE) -C $(KERNELDIR_OUT) M=$(PWD) ARCH=arm CROSS_COMPILE=$(DBG_CROSS_COMPILE) modules modules_install: $(MAKE) -C $(KERNELDIR_OUT) M=$(PWD) ARCH=arm CROSS_COMPILE=$(DBG_CROSS_COMPILE) modules clean: rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions modules.order Module.symvers .PHONY: modules modules_install clean else GT9xx_CORE_OBJS := gt9xx.o #指定驱动模块的核心文件（有init 和 exit） GT9xx_OTHER_OBJS := goodix_tool.o gt9xx_update.o #依赖文件 touchscreen-objs := $(GT9xx_CORE_OBJS) $(GT9xx_OTHER_OBJS) #xxx-objs := 指定驱动模块的所有依赖文件 obj-m := touchscreen.o #最终由xxx-objs链接生成touchscreen.o，再生成touchscreen.ko endif
然后在板级文件中注册该路IIC的设备信息
{ .type = "Goodix-TS", .addr = 0x14, .flags = 0,},或者在设备树上参考其他i2c设备添加ii2信息。
当然，i2c设备信息也可直接写在gt9xx.c的驱动中，可参考
http://blog.csdn.net/mike8825/article/details/51335582
goodix_ts_probe函数跑起来了，说明设备和驱动已经匹配成功。
接下来，确定点击触摸屏有没有检测到中断（/proc/interrupts），如果没有中断，检查中断IO口有没有配置出错，以及通过硬件手段来确定有没有中断信号。
至此，GT9xx驱动移植成功。
参考资料
http://blog.csdn.net/wocao1226/article/details/42459673
1 1
- 触摸屏GT9xx移植
- IMX6 GT9XX 10.1寸触摸屏移植
- GT9xx触摸屏驱动总结
- GT9XX触摸屏双击唤醒功能分析
- GT9XX驱动移植说明书_for_Android_2014011401
- IMX6q下gt9xx TP简易移植
- 如何给触摸屏增加GT9XX内核编译选项
- 触摸屏移植
- linux下移植电容屏驱动gt9xx 笔记
- 2410移植触摸屏驱动
- S3c2410触摸屏驱动移植
- FS_S5PC100触摸屏驱动移植
- 触摸屏移植调试总结
- usb触摸屏驱动移植
- mini2440触摸屏驱动移植
- 触摸屏驱动移植调试
- 触摸屏驱动移植
- AM1808触摸屏驱动移植
- 试试看
- C#循环while、do...while、for、foreach
- 《TCP/IP详解 卷1:协议》 读书笔记 第十七章 TCP：传输控制协议
- AndroidManifest.xml - specified for property 'manifest' does not exist
- Qt之设置QWidget背景色
- 触摸屏GT9xx移植
- Unity中的Serializable
- Reveal查看任意app的高级技巧
- fragment中startActivityForResult接收不到的几种常见原因
- iOS面试题
- 常用类型的取值范围
- 用 ThreadLocal 管理用户session
- 数组作为函数参数的注意点2
- Qt stylesheet 详解
