// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2010 - 2018 Novatek, Inc. * * $Revision: 47247 $ * $Date: 2019-07-10 10:41:36 +0800 (Wed, 10 Jul 2019) $ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * */ #include #include #include #include #include #include #include #include #include #if defined(CONFIG_DRM_PANEL) #include #elif defined(CONFIG_FB) #include #include #elif defined(CONFIG_HAS_EARLYSUSPEND) #include #endif #include "nt36xxx.h" #if NVT_TOUCH_ESD_PROTECT #include #endif /* #if NVT_TOUCH_ESD_PROTECT */ #if NVT_TOUCH_ESD_PROTECT static struct delayed_work nvt_esd_check_work; static struct workqueue_struct *nvt_esd_check_wq; static unsigned long irq_timer = 0; uint8_t esd_check = false; uint8_t esd_retry = 0; #endif /* #if NVT_TOUCH_ESD_PROTECT */ #if NVT_TOUCH_EXT_PROC extern int32_t nvt_extra_proc_init(void); extern void nvt_extra_proc_deinit(void); #endif #if NVT_TOUCH_MP extern int32_t nvt_mp_proc_init(void); extern void nvt_mp_proc_deinit(void); #endif struct nvt_ts_data *ts; #if defined(CONFIG_DRM_PANEL) static struct drm_panel *active_panel; #endif #if BOOT_UPDATE_FIRMWARE static struct workqueue_struct *nvt_fwu_wq; extern void Boot_Update_Firmware(struct work_struct *work); #endif #if defined(CONFIG_DRM_PANEL) static int nvt_drm_notifier_callback(struct notifier_block *self, unsigned long event, void *data); #elif defined(CONFIG_FB) static int nvt_fb_notifier_callback(struct notifier_block *self, unsigned long event, void *data); #elif defined(CONFIG_HAS_EARLYSUSPEND) static void nvt_ts_early_suspend(struct early_suspend *h); static void nvt_ts_late_resume(struct early_suspend *h); #endif #if TOUCH_KEY_NUM > 0 const uint16_t touch_key_array[TOUCH_KEY_NUM] = { KEY_BACK, KEY_HOME, KEY_MENU }; #endif #if WAKEUP_GESTURE const uint16_t gesture_key_array[] = { KEY_POWER, //GESTURE_WORD_C KEY_POWER, //GESTURE_WORD_W KEY_POWER, //GESTURE_WORD_V KEY_POWER, //GESTURE_DOUBLE_CLICK KEY_POWER, //GESTURE_WORD_Z KEY_POWER, //GESTURE_WORD_M KEY_POWER, //GESTURE_WORD_O KEY_POWER, //GESTURE_WORD_e KEY_POWER, //GESTURE_WORD_S KEY_POWER, //GESTURE_SLIDE_UP KEY_POWER, //GESTURE_SLIDE_DOWN KEY_POWER, //GESTURE_SLIDE_LEFT KEY_POWER, //GESTURE_SLIDE_RIGHT }; #endif static uint8_t bTouchIsAwake = 0; /******************************************************* * Description: * Novatek touchscreen irq enable/disable function. * * return: * n.a. *******************************************************/ static void nvt_irq_enable(bool enable) { struct irq_desc *desc; if (enable) { if (!ts->irq_enabled) { enable_irq(ts->client->irq); ts->irq_enabled = true; } } else { if (ts->irq_enabled) { disable_irq(ts->client->irq); ts->irq_enabled = false; } } desc = irq_to_desc(ts->client->irq); NVT_LOG("enable=%d, desc->depth=%d\n", enable, desc->depth); } /******************************************************* * Description: * Novatek touchscreen i2c read function. * * return: * Executive outcomes. 2---succeed. -5---I/O error *******************************************************/ int32_t CTP_I2C_READ(struct i2c_client *client, uint16_t address, uint8_t *buf, uint16_t len) { struct i2c_msg msgs[2]; int32_t ret = -1; int32_t retries = 0; mutex_lock(&ts->xbuf_lock); msgs[0].flags = !I2C_M_RD; msgs[0].addr = address; msgs[0].len = 1; msgs[0].buf = &buf[0]; msgs[1].flags = I2C_M_RD; msgs[1].addr = address; msgs[1].len = len - 1; msgs[1].buf = ts->xbuf; while (retries < 5) { ret = i2c_transfer(client->adapter, msgs, 2); if (ret == 2) break; retries++; } if (unlikely(retries == 5)) { NVT_ERR("error, ret=%d\n", ret); ret = -EIO; } memcpy(buf + 1, ts->xbuf, len - 1); mutex_unlock(&ts->xbuf_lock); return ret; } /******************************************************* * Description: * Novatek touchscreen i2c write function. * * return: * Executive outcomes. 1---succeed. -5---I/O error *******************************************************/ int32_t CTP_I2C_WRITE(struct i2c_client *client, uint16_t address, uint8_t *buf, uint16_t len) { struct i2c_msg msg; int32_t ret = -1; int32_t retries = 0; mutex_lock(&ts->xbuf_lock); msg.flags = !I2C_M_RD; msg.addr = address; msg.len = len; memcpy(ts->xbuf, buf, len); msg.buf = ts->xbuf; while (retries < 5) { ret = i2c_transfer(client->adapter, &msg, 1); if (ret == 1) break; retries++; } if (unlikely(retries == 5)) { NVT_ERR("error, ret=%d\n", ret); ret = -EIO; } mutex_unlock(&ts->xbuf_lock); return ret; } /******************************************************* * Description: * Novatek touchscreen set index/page/addr address. * * return: * Executive outcomes. 0---succeed. -5---access fail. ********************************************************/ int32_t nvt_set_page(uint16_t i2c_addr, uint32_t addr) { uint8_t buf[4] = {0}; buf[0] = 0xFF; //set index/page/addr command buf[1] = (addr >> 16) & 0xFF; buf[2] = (addr >> 8) & 0xFF; return CTP_I2C_WRITE(ts->client, i2c_addr, buf, 3); } /******************************************************* * Description: * Novatek touchscreen reset MCU then into idle mode * function. * * return: * n.a. *******************************************************/ void nvt_sw_reset_idle(void) { uint8_t buf[4]={0}; //---write i2c cmds to reset idle--- buf[0]=0x00; buf[1]=0xA5; CTP_I2C_WRITE(ts->client, I2C_HW_Address, buf, 2); msleep(15); } /******************************************************* * Description: * Novatek touchscreen reset MCU (boot) function. * * return: * n.a. *******************************************************/ void nvt_bootloader_reset(void) { uint8_t buf[8] = {0}; NVT_LOG("start\n"); //---write i2c cmds to reset--- buf[0] = 0x00; buf[1] = 0x69; CTP_I2C_WRITE(ts->client, I2C_HW_Address, buf, 2); // need 35ms delay after bootloader reset msleep(35); NVT_LOG("end\n"); } /******************************************************* * Description: * Novatek touchscreen clear FW status function. * * return: * Executive outcomes. 0---succeed. -1---fail. *******************************************************/ int32_t nvt_clear_fw_status(void) { uint8_t buf[8] = {0}; int32_t i = 0; const int32_t retry = 20; for (i = 0; i < retry; i++) { //---set xdata index to EVENT BUF ADDR--- nvt_set_page(I2C_FW_Address, ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE); //---clear fw status--- buf[0] = EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE; buf[1] = 0x00; CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 2); //---read fw status--- buf[0] = EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE; buf[1] = 0xFF; CTP_I2C_READ(ts->client, I2C_FW_Address, buf, 2); if (buf[1] == 0x00) break; usleep_range(10000, 10000); } if (i >= retry) { NVT_ERR("failed, i=%d, buf[1]=0x%02X\n", i, buf[1]); return -1; } else { return 0; } } /******************************************************* * Description: * Novatek touchscreen check FW status function. * * return: * Executive outcomes. 0---succeed. -1---failed. *******************************************************/ int32_t nvt_check_fw_status(void) { uint8_t buf[8] = {0}; int32_t i = 0; const int32_t retry = 50; for (i = 0; i < retry; i++) { //---set xdata index to EVENT BUF ADDR--- nvt_set_page(I2C_FW_Address, ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE); //---read fw status--- buf[0] = EVENT_MAP_HANDSHAKING_or_SUB_CMD_BYTE; buf[1] = 0x00; CTP_I2C_READ(ts->client, I2C_FW_Address, buf, 2); if ((buf[1] & 0xF0) == 0xA0) break; usleep_range(10000, 10000); } if (i >= retry) { NVT_ERR("failed, i=%d, buf[1]=0x%02X\n", i, buf[1]); return -1; } else { return 0; } } /******************************************************* * Description: * Novatek touchscreen check FW reset state function. * * return: * Executive outcomes. 0---succeed. -1---failed. ******************************************************/ int32_t nvt_check_fw_reset_state(RST_COMPLETE_STATE check_reset_state) { uint8_t buf[8] = {0}; int32_t ret = 0; int32_t retry = 0; while (1) { usleep_range(10000, 10000); //---read reset state--- buf[0] = EVENT_MAP_RESET_COMPLETE; buf[1] = 0x00; CTP_I2C_READ(ts->client, I2C_FW_Address, buf, 6); if ((buf[1] >= check_reset_state) && (buf[1] <= RESET_STATE_MAX)) { ret = 0; break; } retry++; if(unlikely(retry > 100)) { NVT_ERR("error, retry=%d, buf[1]=0x%02X, 0x%02X, 0x%02X, 0x%02X, 0x%02X\n", retry, buf[1], buf[2], buf[3], buf[4], buf[5]); ret = -1; break; } } return ret; } /******************************************************* * Description: * Novatek touchscreen get novatek project id information * function. * * return: * Executive outcomes. 0---success. -1---fail. *******************************************************/ int32_t nvt_read_pid(void) { uint8_t buf[3] = {0}; //---set xdata index to EVENT BUF ADDR--- nvt_set_page(I2C_FW_Address, ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_PROJECTID); //---read project id--- buf[0] = EVENT_MAP_PROJECTID; buf[1] = 0x00; buf[2] = 0x00; CTP_I2C_READ(ts->client, I2C_FW_Address, buf, 3); ts->nvt_pid = (buf[2] << 8) + buf[1]; NVT_LOG("PID=%04X\n", ts->nvt_pid); return 0; } /******************************************************* Description: Novatek touchscreen get firmware related information function. return: Executive outcomes. 0---success. -1---fail. *******************************************************/ int32_t nvt_get_fw_info(void) { uint8_t buf[64] = {0}; uint32_t retry_count = 0; int32_t ret = 0; info_retry: //---set xdata index to EVENT BUF ADDR--- nvt_set_page(I2C_FW_Address, ts->mmap->EVENT_BUF_ADDR | EVENT_MAP_FWINFO); //---read fw info--- buf[0] = EVENT_MAP_FWINFO; CTP_I2C_READ(ts->client, I2C_FW_Address, buf, 17); ts->fw_ver = buf[1]; ts->x_num = buf[3]; ts->y_num = buf[4]; ts->abs_x_max = (uint16_t)((buf[5] << 8) | buf[6]); ts->abs_y_max = (uint16_t)((buf[7] << 8) | buf[8]); ts->max_button_num = buf[11]; //---clear x_num, y_num if fw info is broken--- if ((buf[1] + buf[2]) != 0xFF) { NVT_ERR("FW info is broken! fw_ver=0x%02X, ~fw_ver=0x%02X\n", buf[1], buf[2]); ts->fw_ver = 0; ts->x_num = 18; ts->y_num = 32; ts->abs_x_max = TOUCH_DEFAULT_MAX_WIDTH; ts->abs_y_max = TOUCH_DEFAULT_MAX_HEIGHT; ts->max_button_num = TOUCH_KEY_NUM; if(retry_count < 3) { retry_count++; NVT_ERR("retry_count=%d\n", retry_count); goto info_retry; } else { NVT_ERR("Set default fw_ver=%d, x_num=%d, y_num=%d, " "abs_x_max=%d, abs_y_max=%d, max_button_num=%d!\n", ts->fw_ver, ts->x_num, ts->y_num, ts->abs_x_max, ts->abs_y_max, ts->max_button_num); ret = -1; } } else { ret = 0; } //---Get Novatek PID--- nvt_read_pid(); return ret; } /******************************************************* * Create Device Node (Proc Entry) *******************************************************/ #if NVT_TOUCH_PROC static struct proc_dir_entry *NVT_proc_entry; #define DEVICE_NAME "NVTflash" /******************************************************* * Description: * Novatek touchscreen /proc/NVTflash read function. * * return: * Executive outcomes. 2---succeed. -5,-14---failed. *******************************************************/ static ssize_t nvt_flash_read(struct file *file, char __user *buff, size_t count, loff_t *offp) { uint8_t str[68] = {0}; int32_t ret = -1; int32_t retries = 0; int8_t i2c_wr = 0; if (count > sizeof(str)) { NVT_ERR("error count=%zu\n", count); return -EFAULT; } if (copy_from_user(str, buff, count)) { NVT_ERR("copy from user error\n"); return -EFAULT; } #if NVT_TOUCH_ESD_PROTECT /* * stop esd check work to avoid case that 0x77 report righ after here to enable esd check again * finally lead to trigger esd recovery bootloader reset */ cancel_delayed_work_sync(&nvt_esd_check_work); nvt_esd_check_enable(false); #endif /* #if NVT_TOUCH_ESD_PROTECT */ i2c_wr = str[0] >> 7; if (i2c_wr == 0) { //I2C write while (retries < 20) { ret = CTP_I2C_WRITE(ts->client, (str[0] & 0x7F), &str[2], str[1]); if (ret == 1) break; else NVT_ERR("error, retries=%d, ret=%d\n", retries, ret); retries++; } if (unlikely(retries == 20)) { NVT_ERR("error, ret = %d\n", ret); return -EIO; } return ret; } else if (i2c_wr == 1) { //I2C read while (retries < 20) { ret = CTP_I2C_READ(ts->client, (str[0] & 0x7F), &str[2], str[1]); if (ret == 2) break; else NVT_ERR("error, retries=%d, ret=%d\n", retries, ret); retries++; } // copy buff to user if i2c transfer if (retries < 20) { if (copy_to_user(buff, str, count)) return -EFAULT; } if (unlikely(retries == 20)) { NVT_ERR("error, ret = %d\n", ret); return -EIO; } return ret; } else { NVT_ERR("Call error, str[0]=%d\n", str[0]); return -EFAULT; } } /******************************************************* * Description: * Novatek touchscreen /proc/NVTflash open function. * * return: * Executive outcomes. 0---succeed. -12---failed. *******************************************************/ static int32_t nvt_flash_open(struct inode *inode, struct file *file) { struct nvt_flash_data *dev; dev = kmalloc(sizeof(struct nvt_flash_data), GFP_KERNEL); if (dev == NULL) { NVT_ERR("Failed to allocate memory for nvt flash data\n"); return -ENOMEM; } rwlock_init(&dev->lock); file->private_data = dev; return 0; } /******************************************************* * Description: * Novatek touchscreen /proc/NVTflash close function. * * return: * Executive outcomes. 0---succeed. *******************************************************/ static int32_t nvt_flash_close(struct inode *inode, struct file *file) { struct nvt_flash_data *dev = file->private_data; kfree(dev); return 0; } static const struct file_operations nvt_flash_fops = { .open = nvt_flash_open, .release = nvt_flash_close, .read = nvt_flash_read, }; /******************************************************* * Description: * Novatek touchscreen /proc/NVTflash initial function. * * return: * Executive outcomes. 0---succeed. -12---failed. *******************************************************/ static int32_t nvt_flash_proc_init(void) { NVT_proc_entry = proc_create(DEVICE_NAME, 0444, NULL,&nvt_flash_fops); if (NVT_proc_entry == NULL) { NVT_ERR("Failed!\n"); return -ENOMEM; } else { NVT_LOG("Succeeded!\n"); } NVT_LOG("==========================================================\n"); NVT_LOG("Create /proc/%s\n", DEVICE_NAME); NVT_LOG("==========================================================\n"); return 0; } /******************************************************* * Description: * Novatek touchscreen /proc/NVTflash deinitial function. * * return: * n.a. *******************************************************/ static void nvt_flash_proc_deinit(void) { if (NVT_proc_entry != NULL) { remove_proc_entry(DEVICE_NAME, NULL); NVT_proc_entry = NULL; NVT_LOG("Removed /proc/%s\n", DEVICE_NAME); } } #endif #if WAKEUP_GESTURE #define GESTURE_WORD_C 12 #define GESTURE_WORD_W 13 #define GESTURE_WORD_V 14 #define GESTURE_DOUBLE_CLICK 15 #define GESTURE_WORD_Z 16 #define GESTURE_WORD_M 17 #define GESTURE_WORD_O 18 #define GESTURE_WORD_e 19 #define GESTURE_WORD_S 20 #define GESTURE_SLIDE_UP 21 #define GESTURE_SLIDE_DOWN 22 #define GESTURE_SLIDE_LEFT 23 #define GESTURE_SLIDE_RIGHT 24 /* customized gesture id */ #define DATA_PROTOCOL 30 /* function page definition */ #define FUNCPAGE_GESTURE 1 /******************************************************* * Description: * Novatek touchscreen wake up gesture key report function. * * return: * n.a. *******************************************************/ void nvt_ts_wakeup_gesture_report(uint8_t gesture_id, uint8_t *data) { uint32_t keycode = 0; uint8_t func_type = data[2]; uint8_t func_id = data[3]; /* support fw specifal data protocol */ if ((gesture_id == DATA_PROTOCOL) && (func_type == FUNCPAGE_GESTURE)) { gesture_id = func_id; } else if (gesture_id > DATA_PROTOCOL) { NVT_ERR("gesture_id %d is invalid, func_type=%d, func_id=%d\n", gesture_id, func_type, func_id); return; } NVT_LOG("gesture_id = %d\n", gesture_id); switch (gesture_id) { case GESTURE_WORD_C: NVT_LOG("Gesture : Word-C.\n"); keycode = gesture_key_array[0]; break; case GESTURE_WORD_W: NVT_LOG("Gesture : Word-W.\n"); keycode = gesture_key_array[1]; break; case GESTURE_WORD_V: NVT_LOG("Gesture : Word-V.\n"); keycode = gesture_key_array[2]; break; case GESTURE_DOUBLE_CLICK: NVT_LOG("Gesture : Double Click.\n"); keycode = gesture_key_array[3]; break; case GESTURE_WORD_Z: NVT_LOG("Gesture : Word-Z.\n"); keycode = gesture_key_array[4]; break; case GESTURE_WORD_M: NVT_LOG("Gesture : Word-M.\n"); keycode = gesture_key_array[5]; break; case GESTURE_WORD_O: NVT_LOG("Gesture : Word-O.\n"); keycode = gesture_key_array[6]; break; case GESTURE_WORD_e: NVT_LOG("Gesture : Word-e.\n"); keycode = gesture_key_array[7]; break; case GESTURE_WORD_S: NVT_LOG("Gesture : Word-S.\n"); keycode = gesture_key_array[8]; break; case GESTURE_SLIDE_UP: NVT_LOG("Gesture : Slide UP.\n"); keycode = gesture_key_array[9]; break; case GESTURE_SLIDE_DOWN: NVT_LOG("Gesture : Slide DOWN.\n"); keycode = gesture_key_array[10]; break; case GESTURE_SLIDE_LEFT: NVT_LOG("Gesture : Slide LEFT.\n"); keycode = gesture_key_array[11]; break; case GESTURE_SLIDE_RIGHT: NVT_LOG("Gesture : Slide RIGHT.\n"); keycode = gesture_key_array[12]; break; default: break; } if (keycode > 0) { input_report_key(ts->input_dev, keycode, 1); input_sync(ts->input_dev); input_report_key(ts->input_dev, keycode, 0); input_sync(ts->input_dev); } } #endif /******************************************************* * Description: * Novatek touchscreen parse device tree function. * * return: * n.a. *******************************************************/ #ifdef CONFIG_OF static void nvt_parse_dt(struct device *dev) { struct device_node *np = dev->of_node; #if NVT_TOUCH_SUPPORT_HW_RST ts->reset_gpio = of_get_named_gpio_flags(np, "novatek,reset-gpio", 0, &ts->reset_flags); NVT_LOG("novatek,reset-gpio=%d\n", ts->reset_gpio); #endif ts->irq_gpio = of_get_named_gpio_flags(np, "novatek,irq-gpio", 0, &ts->irq_flags); NVT_LOG("novatek,irq-gpio=%d\n", ts->irq_gpio); } #else static void nvt_parse_dt(struct device *dev) { #if NVT_TOUCH_SUPPORT_HW_RST ts->reset_gpio = NVTTOUCH_RST_PIN; #endif ts->irq_gpio = NVTTOUCH_INT_PIN; } #endif /******************************************************* * Description: * Novatek touchscreen config and request gpio * * return: * Executive outcomes. 0---succeed. not 0---failed. *******************************************************/ static int nvt_gpio_config(struct nvt_ts_data *ts) { int32_t ret = 0; #if NVT_TOUCH_SUPPORT_HW_RST /* request RST-pin (Output/High) */ if (gpio_is_valid(ts->reset_gpio)) { ret = gpio_request_one(ts->reset_gpio, GPIOF_OUT_INIT_HIGH, "NVT-tp-rst"); if (ret) { NVT_ERR("Failed to request NVT-tp-rst GPIO\n"); goto err_request_reset_gpio; } } #endif /* request INT-pin (Input) */ if (gpio_is_valid(ts->irq_gpio)) { ret = gpio_request_one(ts->irq_gpio, GPIOF_IN, "NVT-int"); if (ret) { NVT_ERR("Failed to request NVT-int GPIO\n"); goto err_request_irq_gpio; } } return ret; err_request_irq_gpio: #if NVT_TOUCH_SUPPORT_HW_RST gpio_free(ts->reset_gpio); err_request_reset_gpio: #endif return ret; } /******************************************************* * Description: * Novatek touchscreen deconfig gpio * * return: * n.a. *******************************************************/ static void nvt_gpio_deconfig(struct nvt_ts_data *ts) { if (gpio_is_valid(ts->irq_gpio)) gpio_free(ts->irq_gpio); #if NVT_TOUCH_SUPPORT_HW_RST if (gpio_is_valid(ts->reset_gpio)) gpio_free(ts->reset_gpio); #endif } static uint8_t nvt_fw_recovery(uint8_t *point_data) { uint8_t i = 0; uint8_t detected = true; /* check pattern */ for (i=1 ; i<7 ; i++) { if (point_data[i] != 0x77) { detected = false; break; } } return detected; } #if NVT_TOUCH_ESD_PROTECT void nvt_esd_check_enable(uint8_t enable) { /* update interrupt timer */ irq_timer = jiffies; /* clear esd_retry counter, if protect function is enabled */ esd_retry = enable ? 0 : esd_retry; /* enable/disable esd check flag */ esd_check = enable; } static void nvt_esd_check_func(struct work_struct *work) { unsigned int timer = jiffies_to_msecs(jiffies - irq_timer); //NVT_ERR("esd_check = %d (retry %d)\n", esd_check, esd_retry); //DEBUG if ((timer > NVT_TOUCH_ESD_CHECK_PERIOD) && esd_check) { mutex_lock(&ts->lock); NVT_ERR("do ESD recovery, timer = %d, retry = %d\n", timer, esd_retry); /* do esd recovery, bootloader reset */ nvt_bootloader_reset(); mutex_unlock(&ts->lock); /* update interrupt timer */ irq_timer = jiffies; /* update esd_retry counter */ esd_retry++; } queue_delayed_work(nvt_esd_check_wq, &nvt_esd_check_work, msecs_to_jiffies(NVT_TOUCH_ESD_CHECK_PERIOD)); } #endif /* #if NVT_TOUCH_ESD_PROTECT */ #define POINT_DATA_LEN 65 /******************************************************* * Description: * Novatek touchscreen work function. * * return: * n.a. *******************************************************/ static irqreturn_t nvt_ts_work_func(int irq, void *data) { int32_t ret = -1; uint8_t point_data[POINT_DATA_LEN + 1] = {0}; uint32_t position = 0; uint32_t input_x = 0; uint32_t input_y = 0; uint32_t input_w = 0; uint32_t input_p = 0; uint8_t input_id = 0; #if MT_PROTOCOL_B uint8_t press_id[TOUCH_MAX_FINGER_NUM] = {0}; #endif /* MT_PROTOCOL_B */ int32_t i = 0; int32_t finger_cnt = 0; #if WAKEUP_GESTURE if (bTouchIsAwake == 0) { pm_wakeup_event(&ts->input_dev->dev, 5000); } #endif mutex_lock(&ts->lock); ret = CTP_I2C_READ(ts->client, I2C_FW_Address, point_data, POINT_DATA_LEN + 1); if (ret < 0) { NVT_ERR("CTP_I2C_READ failed.(%d)\n", ret); goto XFER_ERROR; } if (nvt_fw_recovery(point_data)) { #if NVT_TOUCH_ESD_PROTECT nvt_esd_check_enable(true); #endif /* #if NVT_TOUCH_ESD_PROTECT */ goto XFER_ERROR; } #if WAKEUP_GESTURE if (bTouchIsAwake == 0) { input_id = (uint8_t)(point_data[1] >> 3); nvt_ts_wakeup_gesture_report(input_id, point_data); mutex_unlock(&ts->lock); return IRQ_HANDLED; } #endif finger_cnt = 0; for (i = 0; i < ts->max_touch_num; i++) { position = 1 + 6 * i; input_id = (uint8_t)(point_data[position + 0] >> 3); if ((input_id == 0) || (input_id > ts->max_touch_num)) continue; if (((point_data[position] & 0x07) == 0x01) || ((point_data[position] & 0x07) == 0x02)) { //finger down (enter & moving) #if NVT_TOUCH_ESD_PROTECT /* update interrupt timer */ irq_timer = jiffies; #endif /* #if NVT_TOUCH_ESD_PROTECT */ input_x = (uint32_t)(point_data[position + 1] << 4) + (uint32_t) (point_data[position + 3] >> 4); input_y = (uint32_t)(point_data[position + 2] << 4) + (uint32_t) (point_data[position + 3] & 0x0F); if ((input_x < 0) || (input_y < 0)) continue; if ((input_x > ts->abs_x_max) || (input_y > ts->abs_y_max)) continue; input_w = (uint32_t)(point_data[position + 4]); if (input_w == 0) input_w = 1; if (i < 2) { input_p = (uint32_t)(point_data[position + 5]) + (uint32_t)(point_data[i + 63] << 8); if (input_p > TOUCH_FORCE_NUM) input_p = TOUCH_FORCE_NUM; } else { input_p = (uint32_t)(point_data[position + 5]); } if (input_p == 0) input_p = 1; #if MT_PROTOCOL_B press_id[input_id - 1] = 1; input_mt_slot(ts->input_dev, input_id - 1); input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true); #else /* MT_PROTOCOL_B */ input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, input_id - 1); input_report_key(ts->input_dev, BTN_TOUCH, 1); #endif /* MT_PROTOCOL_B */ input_report_abs(ts->input_dev, ABS_MT_POSITION_X, input_x); input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, input_y); input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w); input_report_abs(ts->input_dev, ABS_MT_PRESSURE, input_p); #if MT_PROTOCOL_B #else /* MT_PROTOCOL_B */ input_mt_sync(ts->input_dev); #endif /* MT_PROTOCOL_B */ finger_cnt++; } } #if MT_PROTOCOL_B for (i = 0; i < ts->max_touch_num; i++) { if (press_id[i] != 1) { input_mt_slot(ts->input_dev, i); input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0); input_report_abs(ts->input_dev, ABS_MT_PRESSURE, 0); input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, false); } } input_report_key(ts->input_dev, BTN_TOUCH, (finger_cnt > 0)); #else /* MT_PROTOCOL_B */ if (finger_cnt == 0) { input_report_key(ts->input_dev, BTN_TOUCH, 0); input_mt_sync(ts->input_dev); } #endif /* MT_PROTOCOL_B */ #if TOUCH_KEY_NUM > 0 if (point_data[61] == 0xF8) { #if NVT_TOUCH_ESD_PROTECT /* update interrupt timer */ irq_timer = jiffies; #endif /* #if NVT_TOUCH_ESD_PROTECT */ for (i = 0; i < ts->max_button_num; i++) { input_report_key(ts->input_dev, touch_key_array[i], ((point_data[62] >> i) & 0x01)); } } else { for (i = 0; i < ts->max_button_num; i++) { input_report_key(ts->input_dev, touch_key_array[i], 0); } } #endif input_sync(ts->input_dev); XFER_ERROR: mutex_unlock(&ts->lock); return IRQ_HANDLED; } /******************************************************* * Description: * Novatek touchscreen check and stop crc reboot loop. * * return: * n.a. *******************************************************/ void nvt_stop_crc_reboot(void) { uint8_t buf[8] = {0}; int32_t retry = 0; //read dummy buffer to check CRC fail reboot is happening or not //---change I2C index to prevent geting 0xFF, but not 0xFC--- nvt_set_page(I2C_BLDR_Address, 0x1F64E); //---read to check if buf is 0xFC which means IC is in CRC reboot --- buf[0] = 0x4E; CTP_I2C_READ(ts->client, I2C_BLDR_Address, buf, 4); if ((buf[1] == 0xFC) || ((buf[1] == 0xFF) && (buf[2] == 0xFF) && (buf[3] == 0xFF))) { //IC is in CRC fail reboot loop, needs to be stopped! for (retry = 5; retry > 0; retry--) { //---write i2c cmds to reset idle : 1st--- buf[0]=0x00; buf[1]=0xA5; CTP_I2C_WRITE(ts->client, I2C_HW_Address, buf, 2); //---write i2c cmds to reset idle : 2rd--- buf[0]=0x00; buf[1]=0xA5; CTP_I2C_WRITE(ts->client, I2C_HW_Address, buf, 2); msleep(1); //---clear CRC_ERR_FLAG--- nvt_set_page(I2C_BLDR_Address, 0x3F135); buf[0] = 0x35; buf[1] = 0xA5; CTP_I2C_WRITE(ts->client, I2C_BLDR_Address, buf, 2); //---check CRC_ERR_FLAG--- nvt_set_page(I2C_BLDR_Address, 0x3F135); buf[0] = 0x35; buf[1] = 0x00; CTP_I2C_READ(ts->client, I2C_BLDR_Address, buf, 2); if (buf[1] == 0xA5) break; } if (retry == 0) NVT_ERR("CRC auto reboot is not able to be stopped!\n"); } return; } /******************************************************* * Description: * Novatek touchscreen check chip version trim function. * * return: * Executive outcomes. 0---NVT IC. -1---not NVT IC. *******************************************************/ static int8_t nvt_ts_check_chip_ver_trim(uint32_t chip_ver_trim_addr) { uint8_t buf[8] = {0}; int32_t retry = 0; int32_t list = 0; int32_t i = 0; int32_t found_nvt_chip = 0; int32_t ret = -1; nvt_bootloader_reset(); // NOT in retry loop //---Check for 5 times--- for (retry = 5; retry > 0; retry--) { nvt_sw_reset_idle(); buf[0] = 0x00; buf[1] = 0x35; CTP_I2C_WRITE(ts->client, I2C_HW_Address, buf, 2); msleep(10); nvt_set_page(I2C_BLDR_Address, chip_ver_trim_addr); buf[0] = chip_ver_trim_addr & 0xFF; buf[1] = 0x00; buf[2] = 0x00; buf[3] = 0x00; buf[4] = 0x00; buf[5] = 0x00; buf[6] = 0x00; CTP_I2C_READ(ts->client, I2C_BLDR_Address, buf, 7); NVT_LOG("buf[1]=0x%02X, buf[2]=0x%02X, buf[3]=0x%02X, buf[4]=0x%02X, buf[5]=0x%02X, buf[6]=0x%02X\n", buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); //---Stop CRC check to prevent IC auto reboot--- if ((buf[1] == 0xFC) || ((buf[1] == 0xFF) && (buf[2] == 0xFF) && (buf[3] == 0xFF))) { nvt_stop_crc_reboot(); continue; } // compare read chip id on supported list for (list = 0; list < (sizeof(trim_id_table) / sizeof(struct nvt_ts_trim_id_table)); list++) { found_nvt_chip = 0; // compare each byte for (i = 0; i < NVT_ID_BYTE_MAX; i++) { if (trim_id_table[list].mask[i]) { if (buf[i + 1] != trim_id_table[list].id[i]) break; } } if (i == NVT_ID_BYTE_MAX) { found_nvt_chip = 1; } if (found_nvt_chip) { NVT_LOG("This is NVT touch IC\n"); ts->mmap = trim_id_table[list].mmap; ts->carrier_system = trim_id_table[list].hwinfo->carrier_system; ret = 0; goto out; } else { ts->mmap = NULL; ret = -1; } } msleep(10); } out: return ret; } #if defined(CONFIG_DRM_PANEL) static int nvt_ts_check_dt(struct device_node *np) { int i; int count; struct device_node *node; struct drm_panel *panel; count = of_count_phandle_with_args(np, "panel", NULL); if (count <= 0) return 0; for (i = 0; i < count; i++) { node = of_parse_phandle(np, "panel", i); panel = of_drm_find_panel(node); of_node_put(node); if (!IS_ERR(panel)) { active_panel = panel; NVT_LOG(" %s:find\n", __func__); return 0; } } NVT_ERR(" %s: not find\n", __func__); return -ENODEV; } static int nvt_ts_check_default_tp(struct device_node *dt, const char *prop) { const char **active_tp = NULL; int count, tmp, score = 0; const char *active; int ret, i; count = of_property_count_strings(dt->parent, prop); if (count <= 0 || count > 3) return -ENODEV; active_tp = kcalloc(count, sizeof(char *), GFP_KERNEL); if (!active_tp) { NVT_ERR("FTS alloc failed\n"); return -ENOMEM; } ret = of_property_read_string_array(dt->parent, prop, active_tp, count); if (ret < 0) { NVT_ERR("fail to read %s %d\n", prop, ret); ret = -ENODEV; goto out; } for (i = 0; i < count; i++) { active = active_tp[i]; if (active != NULL) { tmp = of_device_is_compatible(dt, active); if (tmp > 0) score++; } } if (score <= 0) { NVT_ERR("not match this driver\n"); ret = -ENODEV; goto out; } ret = 0; out: kfree(active_tp); return ret; } #endif /******************************************************* * Description: * Novatek touchscreen driver probe function. * * return: * Executive outcomes. 0---succeed. negative---failed *******************************************************/ static int32_t nvt_ts_late_probe(struct i2c_client *client, const struct i2c_device_id *id) { int32_t ret = 0; #if ((TOUCH_KEY_NUM > 0) || WAKEUP_GESTURE) int32_t retry = 0; #endif //---request and config GPIOs--- ret = nvt_gpio_config(ts); if (ret) { NVT_ERR("gpio config error!\n"); goto err_gpio_config_failed; } //---check chip version trim--- ret = nvt_ts_check_chip_ver_trim(CHIP_VER_TRIM_ADDR); if (ret) { NVT_LOG("try to check from old chip ver trim address\n"); ret = nvt_ts_check_chip_ver_trim(CHIP_VER_TRIM_OLD_ADDR); if (ret) { NVT_ERR("chip is not identified\n"); ret = -EINVAL; goto err_chipvertrim_failed; } } nvt_bootloader_reset(); nvt_check_fw_reset_state(RESET_STATE_INIT); nvt_get_fw_info(); //---allocate input device--- ts->input_dev = input_allocate_device(); if (ts->input_dev == NULL) { NVT_ERR("allocate input device failed\n"); ret = -ENOMEM; goto err_input_dev_alloc_failed; } ts->max_touch_num = TOUCH_MAX_FINGER_NUM; #if TOUCH_KEY_NUM > 0 ts->max_button_num = TOUCH_KEY_NUM; #endif ts->int_trigger_type = INT_TRIGGER_TYPE; //---set input device info.--- ts->input_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) ; ts->input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); ts->input_dev->propbit[0] = BIT(INPUT_PROP_DIRECT); #if MT_PROTOCOL_B input_mt_init_slots(ts->input_dev, ts->max_touch_num, 0); #endif input_set_abs_params(ts->input_dev, ABS_MT_PRESSURE, 0, TOUCH_FORCE_NUM, 0, 0); //pressure = TOUCH_FORCE_NUM #if TOUCH_MAX_FINGER_NUM > 1 input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0); //area = 255 input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, 0, ts->abs_x_max, 0, 0); input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, 0, ts->abs_y_max, 0, 0); #if MT_PROTOCOL_B // no need to set ABS_MT_TRACKING_ID, input_mt_init_slots() already set it #else input_set_abs_params(ts->input_dev, ABS_MT_TRACKING_ID, 0, ts->max_touch_num, 0, 0); #endif //MT_PROTOCOL_B #endif //TOUCH_MAX_FINGER_NUM > 1 #if TOUCH_KEY_NUM > 0 for (retry = 0; retry < ts->max_button_num; retry++) { input_set_capability(ts->input_dev, EV_KEY, touch_key_array[retry]); } #endif #if WAKEUP_GESTURE for (retry = 0; retry < ARRAY_SIZE(gesture_key_array); retry++) { input_set_capability(ts->input_dev, EV_KEY, gesture_key_array[retry]); } #endif snprintf(ts->phys, sizeof(ts->phys), "input/ts"); ts->input_dev->name = NVT_TS_NAME; ts->input_dev->phys = ts->phys; ts->input_dev->id.bustype = BUS_I2C; //---register input device--- ret = input_register_device(ts->input_dev); if (ret) { NVT_ERR("register input device (%s) failed. ret=%d\n", ts->input_dev->name, ret); goto err_input_register_device_failed; } //---set int-pin & request irq--- client->irq = gpio_to_irq(ts->irq_gpio); if (client->irq) { NVT_LOG("int_trigger_type=%d\n", ts->int_trigger_type); ts->irq_enabled = true; ret = request_threaded_irq(client->irq, NULL, nvt_ts_work_func, ts->int_trigger_type | IRQF_ONESHOT, NVT_I2C_NAME, ts); if (ret != 0) { NVT_ERR("request irq failed. ret=%d\n", ret); goto err_int_request_failed; } else { nvt_irq_enable(false); NVT_LOG("request irq %d succeed\n", client->irq); } } #if WAKEUP_GESTURE device_init_wakeup(&ts->input_dev->dev, 1); #endif #if BOOT_UPDATE_FIRMWARE nvt_fwu_wq = alloc_workqueue("nvt_fwu_wq", WQ_UNBOUND | WQ_MEM_RECLAIM, 1); if (!nvt_fwu_wq) { NVT_ERR("nvt_fwu_wq create workqueue failed\n"); ret = -ENOMEM; goto err_create_nvt_fwu_wq_failed; } INIT_DELAYED_WORK(&ts->nvt_fwu_work, Boot_Update_Firmware); // please make sure boot update start after display reset(RESX) sequence queue_delayed_work(nvt_fwu_wq, &ts->nvt_fwu_work, msecs_to_jiffies(14000)); #endif NVT_LOG("NVT_TOUCH_ESD_PROTECT is %d\n", NVT_TOUCH_ESD_PROTECT); #if NVT_TOUCH_ESD_PROTECT INIT_DELAYED_WORK(&nvt_esd_check_work, nvt_esd_check_func); nvt_esd_check_wq = alloc_workqueue("nvt_esd_check_wq", WQ_MEM_RECLAIM, 1); if (!nvt_esd_check_wq) { NVT_ERR("nvt_esd_check_wq create workqueue failed\n"); ret = -ENOMEM; goto err_create_nvt_esd_check_wq_failed; } queue_delayed_work(nvt_esd_check_wq, &nvt_esd_check_work, msecs_to_jiffies(NVT_TOUCH_ESD_CHECK_PERIOD)); #endif /* #if NVT_TOUCH_ESD_PROTECT */ //---set device node--- #if NVT_TOUCH_PROC ret = nvt_flash_proc_init(); if (ret != 0) { NVT_ERR("nvt flash proc init failed. ret=%d\n", ret); goto err_flash_proc_init_failed; } #endif #if NVT_TOUCH_EXT_PROC ret = nvt_extra_proc_init(); if (ret != 0) { NVT_ERR("nvt extra proc init failed. ret=%d\n", ret); goto err_extra_proc_init_failed; } #endif #if NVT_TOUCH_MP ret = nvt_mp_proc_init(); if (ret != 0) { NVT_ERR("nvt mp proc init failed. ret=%d\n", ret); goto err_mp_proc_init_failed; } #endif bTouchIsAwake = 1; NVT_LOG("end\n"); nvt_irq_enable(true); return 0; #if NVT_TOUCH_MP nvt_mp_proc_deinit(); err_mp_proc_init_failed: #endif #if NVT_TOUCH_EXT_PROC nvt_extra_proc_deinit(); err_extra_proc_init_failed: #endif #if NVT_TOUCH_PROC nvt_flash_proc_deinit(); err_flash_proc_init_failed: #endif #if NVT_TOUCH_ESD_PROTECT if (nvt_esd_check_wq) { cancel_delayed_work_sync(&nvt_esd_check_work); destroy_workqueue(nvt_esd_check_wq); nvt_esd_check_wq = NULL; } err_create_nvt_esd_check_wq_failed: #endif #if BOOT_UPDATE_FIRMWARE if (nvt_fwu_wq) { cancel_delayed_work_sync(&ts->nvt_fwu_work); destroy_workqueue(nvt_fwu_wq); nvt_fwu_wq = NULL; } err_create_nvt_fwu_wq_failed: #endif #if WAKEUP_GESTURE device_init_wakeup(&ts->input_dev->dev, 0); #endif free_irq(client->irq, ts); err_int_request_failed: input_unregister_device(ts->input_dev); ts->input_dev = NULL; err_input_register_device_failed: if (ts->input_dev) { input_free_device(ts->input_dev); ts->input_dev = NULL; } err_input_dev_alloc_failed: err_chipvertrim_failed: nvt_gpio_deconfig(ts); err_gpio_config_failed: NVT_ERR("ret = %d\n", ret); return ret; } /******************************************************* * Description: * Novatek touchscreen driver probe function. * * return: * Executive outcomes. 0---succeed. negative---failed *******************************************************/ static int32_t nvt_ts_probe(struct i2c_client *client, const struct i2c_device_id *id) { int32_t ret = 0; #if defined(CONFIG_DRM) struct device_node *dp = client->dev.of_node; #endif NVT_LOG("start\n"); #if defined(CONFIG_DRM) if (nvt_ts_check_dt(dp)) { if (!nvt_ts_check_default_tp(dp, "qcom,i2c-touch-active")) ret = -EPROBE_DEFER; else ret = -ENODEV; return ret; } #endif ts = devm_kzalloc(&client->dev, sizeof(struct nvt_ts_data), GFP_KERNEL); if (ts == NULL) { NVT_ERR("failed to allocated memory for nvt ts data\n"); return -ENOMEM; } ts->client = client; i2c_set_clientdata(client, ts); //---parse dts--- nvt_parse_dt(&client->dev); //---check i2c func.--- if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { NVT_ERR("i2c_check_functionality failed. (no I2C_FUNC_I2C)\n"); return -ENODEV; } mutex_init(&ts->lock); mutex_init(&ts->xbuf_lock); ts->id = id; #if defined(CONFIG_DRM) ts->drm_notif.notifier_call = nvt_drm_notifier_callback; if (active_panel && drm_panel_notifier_register(active_panel, &ts->drm_notif) < 0) { NVT_ERR("register notifier failed!\n"); goto err_register_drm_notif_failed; } #elif defined(CONFIG_HAS_EARLYSUSPEND) ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1; ts->early_suspend.suspend = nvt_ts_early_suspend; ts->early_suspend.resume = nvt_ts_late_resume; ret = register_early_suspend(&ts->early_suspend); if (ret) { NVT_ERR("register early suspend failed. ret=%d\n", ret); goto err_register_early_suspend_failed; } #endif NVT_LOG("end\n"); return 0; #if defined(CONFIG_DRM) if (active_panel) drm_panel_notifier_unregister(active_panel, &ts->drm_notif); err_register_drm_notif_failed: #elif defined(CONFIG_HAS_EARLYSUSPEND) unregister_early_suspend(&ts->early_suspend); err_register_early_suspend_failed: #endif return -ENODEV; } /******************************************************* * Description: * Novatek touchscreen driver release function. * * return: * Executive outcomes. 0---succeed. *******************************************************/ static int32_t nvt_ts_remove(struct i2c_client *client) { NVT_LOG("Removing driver...\n"); #if defined(CONFIG_DRM_PANEL) if (active_panel) drm_panel_notifier_unregister(active_panel, &ts->drm_notif); #elif defined(CONFIG_FB) if (fb_unregister_client(&ts->fb_notif)) NVT_ERR("Error occurred while unregistering fb_notifier.\n"); #elif defined(CONFIG_HAS_EARLYSUSPEND) unregister_early_suspend(&ts->early_suspend); #endif #if NVT_TOUCH_MP nvt_mp_proc_deinit(); #endif #if NVT_TOUCH_EXT_PROC nvt_extra_proc_deinit(); #endif #if NVT_TOUCH_PROC nvt_flash_proc_deinit(); #endif #if NVT_TOUCH_ESD_PROTECT if (nvt_esd_check_wq) { cancel_delayed_work_sync(&nvt_esd_check_work); nvt_esd_check_enable(false); destroy_workqueue(nvt_esd_check_wq); nvt_esd_check_wq = NULL; } #endif #if BOOT_UPDATE_FIRMWARE if (nvt_fwu_wq) { cancel_delayed_work_sync(&ts->nvt_fwu_work); destroy_workqueue(nvt_fwu_wq); nvt_fwu_wq = NULL; } #endif #if WAKEUP_GESTURE if (ts->input_dev) device_init_wakeup(&ts->input_dev->dev, 0); #endif nvt_irq_enable(false); free_irq(client->irq, ts); mutex_destroy(&ts->xbuf_lock); mutex_destroy(&ts->lock); nvt_gpio_deconfig(ts); if (ts->input_dev) { input_unregister_device(ts->input_dev); ts->input_dev = NULL; } i2c_set_clientdata(client, NULL); if (ts) { kfree(ts); ts = NULL; } return 0; } static void nvt_ts_shutdown(struct i2c_client *client) { NVT_LOG("Shutdown driver...\n"); nvt_irq_enable(false); #if defined(CONFIG_DRM_PANEL) if (active_panel) drm_panel_notifier_unregister(active_panel, &ts->drm_notif); #elif defined(CONFIG_FB) if (fb_unregister_client(&ts->fb_notif)) NVT_ERR("Error occurred while unregistering fb_notifier.\n"); #elif defined(CONFIG_HAS_EARLYSUSPEND) unregister_early_suspend(&ts->early_suspend); #endif #if NVT_TOUCH_MP nvt_mp_proc_deinit(); #endif #if NVT_TOUCH_EXT_PROC nvt_extra_proc_deinit(); #endif #if NVT_TOUCH_PROC nvt_flash_proc_deinit(); #endif #if NVT_TOUCH_ESD_PROTECT if (nvt_esd_check_wq) { cancel_delayed_work_sync(&nvt_esd_check_work); nvt_esd_check_enable(false); destroy_workqueue(nvt_esd_check_wq); nvt_esd_check_wq = NULL; } #endif /* #if NVT_TOUCH_ESD_PROTECT */ #if BOOT_UPDATE_FIRMWARE if (nvt_fwu_wq) { cancel_delayed_work_sync(&ts->nvt_fwu_work); destroy_workqueue(nvt_fwu_wq); nvt_fwu_wq = NULL; } #endif #if WAKEUP_GESTURE if (ts->input_dev) device_init_wakeup(&ts->input_dev->dev, 0); #endif } /******************************************************* * Description: * Novatek touchscreen driver suspend function. * * return: * Executive outcomes. 0---succeed. *******************************************************/ static int32_t nvt_ts_suspend(struct device *dev) { uint8_t buf[4] = {0}; #if MT_PROTOCOL_B uint32_t i = 0; #endif if (!bTouchIsAwake) { NVT_LOG("Touch is already suspend\n"); return 0; } #if !WAKEUP_GESTURE nvt_irq_enable(false); #endif #if NVT_TOUCH_ESD_PROTECT NVT_LOG("cancel delayed work sync\n"); cancel_delayed_work_sync(&nvt_esd_check_work); nvt_esd_check_enable(false); #endif /* #if NVT_TOUCH_ESD_PROTECT */ mutex_lock(&ts->lock); NVT_LOG("start\n"); bTouchIsAwake = 0; #if WAKEUP_GESTURE //---write command to enter "wakeup gesture mode"--- buf[0] = EVENT_MAP_HOST_CMD; buf[1] = 0x13; CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 2); enable_irq_wake(ts->client->irq); NVT_LOG("Enabled touch wakeup gesture\n"); #else // WAKEUP_GESTURE //---write command to enter "deep sleep mode"--- buf[0] = EVENT_MAP_HOST_CMD; buf[1] = 0x11; CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 2); nvt_set_page(I2C_FW_Address, 0x11a50); buf[0] = 0x11a50 & 0xff; buf[1] = 0x11; CTP_I2C_WRITE(ts->client, I2C_FW_Address, buf, 2); #endif // WAKEUP_GESTURE mutex_unlock(&ts->lock); /* release all touches */ #if MT_PROTOCOL_B for (i = 0; i < ts->max_touch_num; i++) { input_mt_slot(ts->input_dev, i); input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0); input_report_abs(ts->input_dev, ABS_MT_PRESSURE, 0); input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, 0); } #endif input_report_key(ts->input_dev, BTN_TOUCH, 0); #if !MT_PROTOCOL_B input_mt_sync(ts->input_dev); #endif input_sync(ts->input_dev); msleep(50); NVT_LOG("end\n"); return 0; } /******************************************************* * Description: * Novatek touchscreen driver resume function. * * return: * Executive outcomes. 0---succeed. *******************************************************/ static int32_t nvt_ts_resume(struct device *dev) { NVT_LOG("start\n"); if (bTouchIsAwake || ts->fw_ver == 0) { nvt_ts_late_probe(ts->client, ts->id); NVT_LOG("nvt_ts_late_probe\n"); return 0; } mutex_lock(&ts->lock); // make sure display reset(RESX) sequence and dsi cmds sent before this #if NVT_TOUCH_SUPPORT_HW_RST gpio_set_value(ts->reset_gpio, 1); #endif // NT36772 IC due to no boot-load when RESX/TP_RESX // nvt_bootloader_reset(); if (nvt_check_fw_reset_state(RESET_STATE_REK)) { NVT_ERR("FW is not ready! Try to bootloader reset...\n"); nvt_bootloader_reset(); nvt_check_fw_reset_state(RESET_STATE_REK); } #if !WAKEUP_GESTURE nvt_irq_enable(true); #endif #if NVT_TOUCH_ESD_PROTECT nvt_esd_check_enable(false); queue_delayed_work(nvt_esd_check_wq, &nvt_esd_check_work, msecs_to_jiffies(NVT_TOUCH_ESD_CHECK_PERIOD)); #endif /* #if NVT_TOUCH_ESD_PROTECT */ bTouchIsAwake = 1; mutex_unlock(&ts->lock); NVT_LOG("end\n"); return 0; } #if defined(CONFIG_DRM_PANEL) static int nvt_drm_notifier_callback(struct notifier_block *self, unsigned long event, void *data) { struct drm_panel_notifier *evdata = data; int *blank; struct nvt_ts_data *ts = container_of(self, struct nvt_ts_data, drm_notif); if (!evdata || !evdata->data || !ts) return 0; blank = evdata->data; if (event == DRM_PANEL_EARLY_EVENT_BLANK) { if (*blank == DRM_PANEL_BLANK_POWERDOWN) { NVT_LOG("event=%lu, *blank=%d\n", event, *blank); nvt_ts_suspend(&ts->client->dev); } } else if (event == DRM_PANEL_EVENT_BLANK) { if (*blank == DRM_PANEL_BLANK_UNBLANK) { NVT_LOG("event=%lu, *blank=%d\n", event, *blank); nvt_ts_resume(&ts->client->dev); } } return 0; } #elif defined(CONFIG_FB) static int nvt_fb_notifier_callback(struct notifier_block *self, unsigned long event, void *data) { struct fb_event *evdata = data; int *blank; struct nvt_ts_data *ts = container_of(self, struct nvt_ts_data, fb_notif); if (evdata && evdata->data && event == FB_EARLY_EVENT_BLANK) { blank = evdata->data; if (*blank == FB_BLANK_POWERDOWN) { NVT_LOG("event=%lu, *blank=%d\n", event, *blank); nvt_ts_suspend(&ts->client->dev); } } else if (evdata && evdata->data && event == FB_EVENT_BLANK) { blank = evdata->data; if (*blank == FB_BLANK_UNBLANK) { NVT_LOG("event=%lu, *blank=%d\n", event, *blank); nvt_ts_resume(&ts->client->dev); } } return 0; } #elif defined(CONFIG_HAS_EARLYSUSPEND) /******************************************************* * Description: * Novatek touchscreen driver early suspend function. * * return: * n.a. *******************************************************/ static void nvt_ts_early_suspend(struct early_suspend *h) { nvt_ts_suspend(ts->client, PMSG_SUSPEND); } /******************************************************* * Description: * Novatek touchscreen driver late resume function. * * return: * n.a. * *******************************************************/ static void nvt_ts_late_resume(struct early_suspend *h) { nvt_ts_resume(ts->client); } #endif static const struct i2c_device_id nvt_ts_id[] = { { NVT_I2C_NAME, 0 }, { } }; #ifdef CONFIG_OF static struct of_device_id nvt_match_table[] = { { .compatible = "novatek,NVT-ts",}, { }, }; #endif static struct i2c_driver nvt_i2c_driver = { .probe = nvt_ts_probe, .remove = nvt_ts_remove, .shutdown = nvt_ts_shutdown, .id_table = nvt_ts_id, .driver = { .name = NVT_I2C_NAME, #ifdef CONFIG_OF .of_match_table = nvt_match_table, #endif }, }; /******************************************************* * Description: * Driver Install function. * * return: * Executive Outcomes. 0---succeed. not 0---failed. ********************************************************/ static int32_t __init nvt_driver_init(void) { int32_t ret = 0; NVT_LOG("start\n"); //---add i2c driver--- ret = i2c_add_driver(&nvt_i2c_driver); if (ret) { NVT_ERR("failed to add i2c driver"); goto err_driver; } NVT_LOG("finished\n"); err_driver: return ret; } /******************************************************* * Description: * Driver uninstall function. * * return: * n.a. ********************************************************/ static void __exit nvt_driver_exit(void) { i2c_del_driver(&nvt_i2c_driver); } late_initcall(nvt_driver_init); //module_init(nvt_driver_init); module_exit(nvt_driver_exit); MODULE_DESCRIPTION("Novatek Touchscreen Driver");