drivers/leds/leds-sm5713-fled.c - LeafOS-Devices/android_kernel_samsung_gta4xl - Gitiles

 /*
  * leds-sm5713-fled.c - SM5713 Flash-LEDs device driver
  *
  * Copyright (C) 2017 Samsung Electronics Co.Ltd
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */

 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/of.h>
 #include <linux/of_gpio.h>
 #include <linux/mfd/sm5713.h>
 #include <linux/mfd/sm5713-private.h>
 #include <linux/kthread.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/platform_device.h>

 static struct sm5713_fled_data *g_sm5713_fled;
 extern struct class *camera_class; /*sys/class/camera*/

 /* for MUIC HV-VBUS control */
 extern int muic_request_disable_afc_state(void);
 extern void sm5713_request_default_power_src(void);
 extern int muic_check_fled_state(bool enable, u8 mode);   /* mode:1 = FLED_MODE_TORCH, mode:2 = FLED_MODE_FLASH */
 extern int sm5713_usbpd_check_fled_state(bool enable, u8 mode);

 static void fled_set_mode(struct sm5713_fled_data *fled, u8 fled_index, u8 mode)
 {
 	switch (fled_index) {
 	case SM5713_FLED_INDEX_1:
 	case SM5713_FLED_INDEX_2:
 		sm5713_update_reg(fled->i2c, SM5713_CHG_REG_FLED1CNTL1 + (fled_index * 2), (mode << 0), (0x3 << 0));
 		break;
 	case SM5713_FLED_INDEX_3:
 		sm5713_update_reg(fled->i2c, SM5713_CHG_REG_FLED3CNTL, (mode << 4), (0x1 << 4));
 		break;
 	}
 }

 static void fled_set_fled_current(struct sm5713_fled_data *fled, u8 fled_index, u8 offset)
 {
 	switch (fled_index) {
 	case SM5713_FLED_INDEX_1:
 	case SM5713_FLED_INDEX_2:
 		sm5713_update_reg(fled->i2c, SM5713_CHG_REG_FLED1CNTL2 + (fled_index * 2), (offset << 0), (0xf << 0));
 		break;
 	case SM5713_FLED_INDEX_3:
 		dev_err(fled->dev, "%s: can't used fled2\n", __func__);
 		break;
 	}
 }

 static void fled_set_mled_current(struct sm5713_fled_data *fled, u8 fled_index, u8 offset)
 {
 	switch (fled_index) {
 	case SM5713_FLED_INDEX_1:
 	case SM5713_FLED_INDEX_2:
 		sm5713_update_reg(fled->i2c, SM5713_CHG_REG_FLED1CNTL2 + (fled_index * 2), (offset << 4), (0x7 << 4));
 		break;
 	case SM5713_FLED_INDEX_3:
 		sm5713_update_reg(fled->i2c, SM5713_CHG_REG_FLED3CNTL, (offset << 0), (0xf << 0));
 		break;
 	}
 }

 static int sm5713_fled_check_vbus(struct sm5713_fled_data *fled)
 {
 	fled->vbus_voltage = sm5713_charger_oper_get_vbus_voltage();
 	if (fled->vbus_voltage > 5500) {
 		muic_request_disable_afc_state();
 		sm5713_request_default_power_src();
 	}
 	return 0;
 }

 static int sm5713_fled_control(u8 fled_index, u8 fled_mode)
 {
 	struct sm5713_fled_data *fled = g_sm5713_fled;
 	int ret = 0;

 	if (g_sm5713_fled == NULL) {
 		pr_err("sm5713-fled: %s: not probe fled yet\n", __func__);
 		return -ENXIO;
 	}

 	if (fled_mode == FLED_MODE_FLASH) {
 		ret = gpio_request(fled->pdata->led[fled_index].fen_pin, "sm5713_fled");
 		if (ret < 0) {
 			dev_err(fled->dev, "%s: failed request fen-gpio(%d)", __func__, ret);

 			fled_set_mode(fled, fled_index, fled_mode);
 			fled->pdata->led[fled_index].used_gpio_ctrl = false;
 		} else {
 			gpio_direction_output(fled->pdata->led[fled_index].fen_pin, 0);
 			msleep(10); //it need to delay change to boosting mode in sm5713(about 7ms)
 			fled_set_mode(fled, fled_index, FLED_MODE_EXTERNAL);
 			gpio_set_value(fled->pdata->led[fled_index].fen_pin, 1);
 			gpio_set_value(fled->pdata->led[fled_index].men_pin, 0);
 			fled->pdata->led[fled_index].used_gpio_ctrl = true;
 		}
 		pr_info("sm5713-fled: %s: Flash mode & used gpio = %d.\n", __func__, fled->pdata->led[fled_index].used_gpio_ctrl);
 	} else if (fled_mode == FLED_MODE_TORCH) {
 		ret = gpio_request(fled->pdata->led[fled_index].men_pin, "sm5713_fled");
 		if (ret < 0) {
 			dev_err(fled->dev, "%s: failed request men-gpio(%d)", __func__, ret);
 			fled_set_mode(fled, fled_index, fled_mode);
 			fled->pdata->led[fled_index].used_gpio_ctrl = false;
 		} else {
 			gpio_direction_output(fled->pdata->led[fled_index].men_pin, 0);

 			fled_set_mode(fled, fled_index, FLED_MODE_EXTERNAL);
 			gpio_set_value(fled->pdata->led[fled_index].men_pin, 1);
 			gpio_set_value(fled->pdata->led[fled_index].fen_pin, 0);
 			fled->pdata->led[fled_index].used_gpio_ctrl = true;
 		}
 		pr_info("sm5713-fled: %s: Torch mode & used gpio = %d.\n", __func__, fled->pdata->led[fled_index].used_gpio_ctrl);
 	} else if (fled_mode == FLED_MODE_OFF) {
 		pr_info("sm5713-fled: %s: off mode & used gpio = %d.\n", __func__, fled->pdata->led[fled_index].used_gpio_ctrl);

 		fled_set_mode(fled, fled_index, fled_mode);

 		if (fled->pdata->led[fled_index].used_gpio_ctrl == true) {
 			gpio_set_value(fled->pdata->led[fled_index].fen_pin, 0);
 			gpio_set_value(fled->pdata->led[fled_index].men_pin, 0);
 			gpio_free(fled->pdata->led[fled_index].men_pin);
 			gpio_free(fled->pdata->led[fled_index].fen_pin);
 			fled->pdata->led[fled_index].used_gpio_ctrl = false;
 		}

 		if (fled->pdata->led[fled_index].en_mled == true) {
 			fled->torch_on_cnt--;
 			if (fled->torch_on_cnt == 0) {
 				sm5713_charger_oper_push_event(SM5713_CHARGER_OP_EVENT_TORCH, 0);
 				if (fled->flash_prepare_cnt == 0) {
 					muic_check_fled_state(0, FLED_MODE_TORCH);
 					sm5713_usbpd_check_fled_state(0, FLED_MODE_TORCH);
 				}
 			}
 			fled->pdata->led[fled_index].en_mled = false;
 		}

 		if (fled->pdata->led[fled_index].en_fled == true) {
 			fled->flash_on_cnt--;
 			if (fled->flash_on_cnt == 0) {
 				sm5713_charger_oper_push_event(SM5713_CHARGER_OP_EVENT_FLASH, 0);
 			}
 			fled->pdata->led[fled_index].en_fled = false;
 		}
 	} else {
 		pr_err("sm5713-fled: %s: fen_pin : %d, men_pin : %d, FLED_MODE = %d\n", __func__,  fled->pdata->led[fled_index].fen_pin, fled->pdata->led[fled_index].men_pin, fled_mode);
 		return -EINVAL;
 	}

 	return 0;
 }

 static int sm5713_fled_torch_on(u8 fled_index, u8 brightness)
 {
 	struct sm5713_fled_data *fled = g_sm5713_fled;

 	pr_info("sm5713-fled: %s: start.\n", __func__);

 	if (g_sm5713_fled == NULL) {
 		pr_err("sm5713-fled: %s: not probe fled yet\n", __func__);
 		return -ENXIO;
 	}

 	mutex_lock(&fled->fled_mutex);

 	if (brightness) {
 		fled_set_mled_current(fled, fled_index, brightness);
 	} else {
 		fled_set_mled_current(fled, fled_index, fled->pdata->led[fled_index].torch_brightness);
 	}

 	if (fled->pdata->led[fled_index].en_mled == false) {
 		if (fled->torch_on_cnt == 0) {
 			sm5713_charger_oper_push_event(SM5713_CHARGER_OP_EVENT_TORCH, 1);
 		}
 		fled->pdata->led[fled_index].en_mled = true;
 		fled->torch_on_cnt++;
 	}

 	sm5713_fled_control(fled_index, FLED_MODE_TORCH);

 	mutex_unlock(&fled->fled_mutex);

 	pr_info("sm5713-fled: %s: done.\n", __func__);

 	return 0;
 }

 static int sm5713_fled_flash_on(u8 fled_index, u8 brightness)
 {
 	struct sm5713_fled_data *fled = g_sm5713_fled;

 	pr_info("sm5713-fled: %s: start.\n", __func__);

 	if (g_sm5713_fled == NULL) {
 		pr_err("sm5713-fled: %s: not probe fled yet\n", __func__);
 		return -ENXIO;
 	}

 	mutex_lock(&fled->fled_mutex);

 	if (brightness) {
 		fled_set_fled_current(fled, fled_index, brightness);
 	} else {
 		fled_set_fled_current(fled, fled_index, fled->pdata->led[fled_index].flash_brightness);
 	}

 	if (fled->pdata->led[fled_index].en_fled == false) {
 		if (fled->flash_on_cnt == 0) {
 			sm5713_charger_oper_push_event(SM5713_CHARGER_OP_EVENT_FLASH, 1);
 		}
 		fled->pdata->led[fled_index].en_fled = true;
 		fled->flash_on_cnt++;
 	}
 	sm5713_fled_control(fled_index, FLED_MODE_FLASH);

 	mutex_unlock(&fled->fled_mutex);

 	pr_info("sm5713-fled: %s: done.\n", __func__);

 	return 0;
 }

 static int sm5713_fled_prepare_flash(u8 fled_index)
 {
 	struct sm5713_fled_data *fled = g_sm5713_fled;

 	pr_info("sm5713-fled: %s: start.\n", __func__);

 	if (fled == NULL) {
 		pr_err("sm5713-fled: %s: not probe fled yet\n", __func__);
 		return -ENXIO;
 	}

 	if (fled_index > SM5713_FLED_INDEX_2 || fled->pdata->led[fled_index].flash_brightness == 0) {
 		pr_err("sm5713-fled: %s: don't support flash mode (fled_index=%d)\n", __func__, fled_index);
 		return -EPERM;
 	}

 	if (fled->pdata->led[fled_index].pre_fled == true) {
 		pr_info("sm5713-fled: %s: already prepared\n", __func__);
 		return 0;
 	}

 	mutex_lock(&fled->fled_mutex);

 	if (fled->flash_prepare_cnt == 0) {
 		sm5713_fled_check_vbus(fled);
 		muic_check_fled_state(1, FLED_MODE_FLASH);
 		sm5713_usbpd_check_fled_state(1, FLED_MODE_FLASH);
 	}
 	fled_set_fled_current(fled, fled_index, fled->pdata->led[fled_index].flash_brightness);
 	fled_set_mled_current(fled, fled_index, fled->pdata->led[fled_index].torch_brightness);

 	fled->flash_prepare_cnt++;
 	fled->pdata->led[fled_index].pre_fled = true;

 	mutex_unlock(&fled->fled_mutex);

 	pr_info("sm5713-fled: %s: done.\n", __func__);

 	return 0;
 }

 static int sm5713_fled_close_flash(u8 fled_index)
 {
 	struct sm5713_fled_data *fled = g_sm5713_fled;

 	pr_info("sm5713-fled: %s: start.\n", __func__);

 	if (fled == NULL) {
 		pr_err("sm5713-fled: %s: not probe fled yet\n", __func__);
 		return -ENXIO;
 	}

 	if (fled_index > SM5713_FLED_INDEX_2 || fled->pdata->led[fled_index].flash_brightness == 0) {
 		pr_err("sm5713-fled: %s: don't support flash mode (fled_index=%d)\n", __func__, fled_index);
 		return -EPERM;
 	}

 	if (fled->pdata->led[fled_index].pre_fled == false) {
 		pr_info("sm5713-fled: %s: already closed\n", __func__);
 		return 0;
 	}

 	mutex_lock(&fled->fled_mutex);

 	fled_set_mode(fled, fled_index, FLED_MODE_OFF);
 	fled->flash_prepare_cnt--;

 	if (fled->flash_prepare_cnt == 0) {
 		sm5713_charger_oper_push_event(SM5713_CHARGER_OP_EVENT_TORCH, 0);
 		sm5713_charger_oper_push_event(SM5713_CHARGER_OP_EVENT_FLASH, 0);
 		muic_check_fled_state(0, FLED_MODE_FLASH);
 		sm5713_usbpd_check_fled_state(0, FLED_MODE_FLASH);
 	}
 	fled->pdata->led[fled_index].pre_fled = false;

 	mutex_unlock(&fled->fled_mutex);

 	pr_info("sm5713-fled: %s: done.\n", __func__);

 	return 0;
 }

 /**
  * For export Camera flash control support
  *
  * Caution - MUST be called "sm5713_fled_prepare_flash" before
  * using to FLED. also if finished using FLED, MUST be called
  * "sm5713_fled_close_flash".
  */

 int sm5713_fled_prepare_flash_thread_func(void* fled_index)
 {
 	int ret = 0;
 	u8 fled_index_value = *(u8*)fled_index;

 	ret = sm5713_fled_prepare_flash(fled_index_value);
 	if(ret < 0){
 		pr_err("PREPARE_FLASH failed");
 		return ret;
 	}
 	kfree(fled_index);

 	return ret;
 }

 int sm5713_fled_run_prepare_flash_thread(u8 fled_index)
 {
 	struct task_struct* prepare_flash_task;
 	u8* index_data = (u8*)kzalloc(sizeof(u8),GFP_KERNEL);

 	*index_data = fled_index;
 	prepare_flash_task = kthread_run(sm5713_fled_prepare_flash_thread_func, index_data, "prepare_flash");

 	return 0;
 }

 int32_t sm5713_fled_mode_ctrl(u8 fled_index, int state)
 {
 	struct sm5713_fled_data *fled = g_sm5713_fled;
 	int ret = 0;

 	pr_info("sm5713-fled: %s: sm5713_fled_mode_ctrl start\n", __func__);

 	if (g_sm5713_fled == NULL)
 	{
 		pr_err("sm5713_fled: %s: g_sm5713_fled is not initialized.\n", __func__);
 		return -EFAULT;
 	}

 	switch (state) {

 	case SM5713_FLED_MODE_OFF:
 		/* FlashLight Mode OFF */
 		ret = sm5713_fled_control(fled_index, FLED_MODE_OFF);
 		if (ret < 0)
 			pr_err("sm5713-fled: %s: SM5713_FLED_MODE_OFF(%d) failed\n", __func__, state);
 		else
 			pr_info("sm5713-fled: %s: SM5713_FLED_MODE_OFF(%d) done\n", __func__, state);
 		break;

 	case SM5713_FLED_MODE_MAIN_FLASH:
 		/* FlashLight Mode Flash */
 		ret = sm5713_fled_flash_on(fled_index, fled->pdata->led[fled_index].flash_brightness);
 		if (ret < 0)
 			pr_err("sm5713-fled: %s: SM5713_FLED_MODE_MAIN_FLASH(%d) failed\n", __func__, state);
 		else
 			pr_info("sm5713-fled: %s: SM5713_FLED_MODE_MAIN_FLASH(%d) done\n", __func__, state);
 		break;

 	case SM5713_FLED_MODE_TORCH_FLASH: /* TORCH FLASH */
 		/* FlashLight Mode TORCH */
 		ret = sm5713_fled_torch_on(fled_index, fled->pdata->led[fled_index].torch_brightness);
 		if (ret < 0)
 			pr_err("sm5713-fled: %s: SM5713_FLED_MODE_TORCH_FLASH(%d) failed\n", __func__, state);
 		else
 			pr_info("sm5713-fled: %s: SM5713_FLED_MODE_TORCH_FLASH(%d) done\n", __func__, state);
 		break;

 	case SM5713_FLED_MODE_PRE_FLASH: /* TORCH FLASH */
 		/* FlashLight Mode TORCH */
 		ret = sm5713_fled_torch_on(fled_index, fled->pdata->led[fled_index].preflash_brightness);
 		if (ret < 0)
 			pr_err("sm5713-fled: %s: SM5713_FLED_MODE_PRE_FLASH(%d) failed\n", __func__, state);
 		else
 			pr_info("sm5713-fled: %s: SM5713_FLED_MODE_PRE_FLASH(%d) done\n", __func__, state);
 		break;

 	case SM5713_FLED_MODE_PREPARE_FLASH:
 		/* 9V -> 5V VBUS change */
 		ret = sm5713_fled_run_prepare_flash_thread(fled_index);
 		if (ret < 0)
 			pr_err("sm5713-fled: %s: SM5713_FLED_MODE_PREPARE_FLASH(%d) thread failed to start\n", __func__, state);
 		else
 			pr_info("sm5713-fled: %s: SM5713_FLED_MODE_PREPARE_FLASH(%d) thread started \n", __func__, state);
 		break;

 	case SM5713_FLED_MODE_CLOSE_FLASH:
 		/* 5V -> 9V VBUS change */
 		ret = sm5713_fled_close_flash(fled_index);
 		if (ret < 0)
 			pr_err("sm5713-fled: %s: SM5713_FLED_MODE_CLOSE_FLASH(%d) failed\n", __func__, state);
 		else
 			pr_info("sm5713-fled: %s: SM5713_FLED_MODE_CLOSE_FLASH(%d) done\n", __func__, state);
 		break;

 	default:
 		/* FlashLight Mode OFF */
 		ret = sm5713_fled_control(fled_index, FLED_MODE_OFF);
 		if (ret < 0)
 			pr_err("sm5713-fled: %s: FLED_MODE_OFF(%d) failed\n", __func__, state);
 		else
 			pr_info("sm5713-fled: %s: FLED_MODE_OFF(%d) done\n", __func__, state);
 		break;
 	}

 	return ret;
 }

 EXPORT_SYMBOL_GPL(sm5713_fled_mode_ctrl);

 /**
  *  For camera_class device file control (Torch-LED)
  */

 int get_brightness_index(int store_value)
 {
 	if (store_value <= 1001) {
 		return 0;
 	} else if (store_value <= 1002) {
 		return 1;
 	} else if (store_value <= 1004) {
 		return 2;
 	} else if (store_value <= 1006) {
 		return 3;
 	} else if (store_value <= 1009) {
 		return 4;
 	} else {
 		return 0;
 	}
 }

 #if defined (CONFIG_LEDS_SM5713_DUAL_LED)
 static int get_fled_index(sm5713_fled_platform_data *pdata, struct device_attribute *attr, int store_value, int *fled_index_array)
 {
 	int fled_index_num = 0;
 	int i = 0;
 	if (strcmp(attr->attr.name, "rear_flash") == 0 || strcmp(attr->attr.name, "rear_torch_flash") == 0) {
 		if (store_value <= 1001) {
 			fled_index_num = pdata->torch_index_cnt[0];
 			for (i = 0; i < fled_index_num; i++) {
 				fled_index_array[i] = pdata->torch_index[0][i];
 			}
 		} else if (store_value <= 1002) {
 			fled_index_num = pdata->torch_index_cnt[1];
 			for (i = 0; i < fled_index_num; i++) {
 				fled_index_array[i] = pdata->torch_index[1][i];
 			}
 		} else if (store_value <= 1004) {
 			fled_index_num = pdata->torch_index_cnt[2];
 			for (i = 0; i < fled_index_num; i++) {
 				fled_index_array[i] = pdata->torch_index[2][i];
 			}
 		} else if (store_value <= 1006) {
 			fled_index_num = pdata->torch_index_cnt[3];
 			for (i = 0; i < fled_index_num; i++) {
 				fled_index_array[i] = pdata->torch_index[3][i];
 			}
 		} else if (store_value <= 1009) {
 			fled_index_num = pdata->torch_index_cnt[4];
 			for (i = 0; i < fled_index_num; i++) {
 				fled_index_array[i] = pdata->torch_index[4][i];
 			}
 		} else {
 			fled_index_num = 1;
 			fled_index_array[0] = SM5713_FLED_INDEX_1;
 		}

 	} else {
 		pr_err("sm5713-fled: flash index not matched (attr=%s) \n", attr->attr.name);
 	}
 	pr_err("[leds-sm5713-fled] store_value [%d] selected fled_index is [%d]",store_value,  fled_index_num);
 	return fled_index_num;
 }

 static ssize_t sm5713_rear_flash_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 {
 	int fled_index = SM5713_FLED_INDEX_3;
 	int fled_index_cnt;
 	int fled_index_array[SM5713_FLED_MAX_NUM];
 	u32 store_value;
 	int led_iterator;
 	int ret;
 	struct sm5713_fled_data *fled = g_sm5713_fled;

 	if (g_sm5713_fled == NULL) {
 		pr_err("sm5713-fled: %s: g_sm5713_fled NULL \n", __func__);
 		return -ENODEV;
 	}

 	if (IS_ERR_VALUE((unsigned long)fled_index) || (buf == NULL) || kstrtouint(buf, 10, &store_value)) {
 		return -ENXIO;
 	}

 	fled_index_cnt = get_fled_index(fled->pdata, attr, store_value, fled_index_array);

 	dev_info(fled->dev, "%s: value=%d\n", __func__, store_value);

 	mutex_lock(&fled->fled_mutex);

 	for (led_iterator = 0; led_iterator < fled_index_cnt; led_iterator++) {
 		fled_index = fled_index_array[led_iterator];
 		fled->pdata->led[fled_index].sysfs_input_data = store_value;

 		if (store_value == 0) {
 			if (fled->pdata->led[fled_index].en_mled == false
 					&& fled->pdata->led[fled_index].en_fled == false) {
 				goto out_skip;
 			}
 			sm5713_fled_control(fled_index, FLED_MODE_OFF);
 		} else {
 			if (store_value == 200) { /* 200 : Flash ON */
 				fled_set_fled_current(fled, fled_index, 0x0); /* Set fled = 600mA */

 				if (fled->pdata->led[fled_index].en_fled == false) {
 					if (fled->flash_on_cnt == 0) {
 						sm5713_charger_oper_push_event(
 								SM5713_CHARGER_OP_EVENT_FLASH, 1);
 					}
 					fled->pdata->led[fled_index].en_fled = true;
 					fled->flash_on_cnt++;
 				}
 				sm5713_fled_control(fled_index, FLED_MODE_FLASH);
 			} else { /* 1, 100, 1001~1010, : Torch ON */
 				/* Main Torch on */
 				if (store_value == 1) {
 					fled_set_mled_current(fled, fled_index, 0x1); /* Set mled = 75mA(0x1) */
 					/* Factory Torch on */
 				} else if (store_value == 100) {
 					fled_set_mled_current(fled, fled_index, 0x7); /* Set mled=225mA */
 				} else if (store_value >= 1001 && store_value <= 1010) {
 					/* Torch on (Normal) */
 					if (fled->pdata->led[fled_index].apply_torch_brightness_control) {
 						int brigthness_index;
 						brigthness_index = get_brightness_index(store_value);
 						fled_set_mled_current(fled, fled_index,
 								fled->pdata->led[fled_index].torch_brightness_levels[brigthness_index]);
 					} else {
 						if (store_value - 1001 > 7)
 							fled_set_mled_current(fled, fled_index, 0x07); /* Max 225mA(0x7)  */
 						else
 							fled_set_mled_current(fled, fled_index,
 									(store_value - 1001)); /* 50mA(0x0) ~ 225mA(0x7) at 25mA step */
 					}
 				} else {
 					dev_err(fled->dev, "%s: failed store cmd\n", __func__);
 					ret = -EINVAL;
 					goto out_p;
 				}
 				dev_info(fled->dev, "%s: en_mled=%d, torch_on_cnt = %d \n",
 						__func__, fled->pdata->led[fled_index].en_mled,
 						fled->torch_on_cnt);

 				if (fled->pdata->led[fled_index].en_mled == true) {
 					goto out_skip;
 				}

 				if (fled->torch_on_cnt == 0) {
 					sm5713_fled_check_vbus(fled);
 					muic_check_fled_state(1, FLED_MODE_TORCH);
 					sm5713_usbpd_check_fled_state(1, FLED_MODE_TORCH);
 					sm5713_charger_oper_push_event(
 							SM5713_CHARGER_OP_EVENT_TORCH, 1);
 				}
 				sm5713_fled_control(fled_index, FLED_MODE_TORCH);

 				fled->pdata->led[fled_index].en_mled = true;
 				fled->torch_on_cnt++;
 			}
 		}
 	}

 out_skip:
 	ret = count;

 out_p:
 	mutex_unlock(&fled->fled_mutex);

 	return count;
 }

 static ssize_t sm5713_rear_flash_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct sm5713_fled_data *fled = g_sm5713_fled;

 	if (g_sm5713_fled == NULL) {
 		pr_err("sm5713-fled: %s: g_sm5713_fled is NULL\n", __func__);
 		return -ENODEV;
 	}

 	return sprintf(buf, "LED1[%d], LED2[%d], LED3[%d]\n",
 			fled->pdata->led[SM5713_FLED_INDEX_1].sysfs_input_data,
 			fled->pdata->led[SM5713_FLED_INDEX_2].sysfs_input_data,
 			fled->pdata->led[SM5713_FLED_INDEX_3].sysfs_input_data);
 }

 static ssize_t sm5713_rear_flash2_store(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count) {
 	int fled_index = SM5713_FLED_INDEX_1;
 	u32 store_value;
 	int ret;
 	struct sm5713_fled_data *fled = g_sm5713_fled;

 	if (g_sm5713_fled == NULL) {
 		pr_err("sm5713-fled: %s: g_sm5713_fled NULL \n", __func__);
 		return -ENODEV;
 	}

 	if (IS_ERR_VALUE((unsigned long) fled_index) || (buf == NULL)
 			|| kstrtouint(buf, 10, &store_value)) {
 		return -ENXIO;
 	}

 	fled->pdata->led[fled_index].sysfs_input_data = store_value;

 	dev_info(fled->dev, "%s: value=%d\n", __func__, store_value);

 	mutex_lock(&fled->fled_mutex);

 	if (store_value == 0) { /* 0: Torch OFF */
 		if (fled->pdata->led[fled_index].en_mled == false
 				&& fled->pdata->led[fled_index].en_fled == false) {
 			goto out_skip;
 		}
 		sm5713_fled_control(fled_index, FLED_MODE_OFF);
 	} else if (store_value == 200) { /* 200 : Flash ON */
 		fled_set_fled_current(fled, fled_index, 0x0); /* Set fled = 600mA */

 		if (fled->pdata->led[fled_index].en_fled == false) {
 			if (fled->flash_on_cnt == 0) {
 				sm5713_charger_oper_push_event(SM5713_CHARGER_OP_EVENT_FLASH,
 						1);
 			}
 			fled->pdata->led[fled_index].en_fled = true;
 			fled->flash_on_cnt++;
 		}
 		sm5713_fled_control(fled_index, FLED_MODE_FLASH);
 	} else { /* 1, 100, 1001~1010, : Torch ON */
 		/* Main Torch on */
 		if (store_value == 1) {
 			fled_set_mled_current(fled, fled_index, 0x1); /* Set mled = 75mA(0x1) */
 			/* Factory Torch on */
 		} else if (store_value == 100) {
 			fled_set_mled_current(fled, fled_index, 0x7); /* Set mled=225mA */
 		} else if (store_value >= 1001 && store_value <= 1010) {
 			/* Torch on (Normal) */
 			if (fled->pdata->led[fled_index].apply_torch_brightness_control) {
 				int brigthness_index;
 				brigthness_index = get_brightness_index(store_value);
 				fled_set_mled_current(fled, fled_index,
 						fled->pdata->led[fled_index].torch_brightness_levels[brigthness_index]);
 			} else {
 				if (store_value - 1001 > 7)
 					fled_set_mled_current(fled, fled_index, 0x07); /* Max 225mA(0x7)  */
 				else
 					fled_set_mled_current(fled, fled_index,
 							(store_value - 1001)); /* 50mA(0x0) ~ 225mA(0x7) at 25mA step */
 			}
 		} else {
 			dev_err(fled->dev, "%s: failed store cmd\n", __func__);
 			ret = -EINVAL;
 			goto out_p;
 		}
 		dev_info(fled->dev, "%s: en_mled=%d, torch_on_cnt = %d \n", __func__,
 				fled->pdata->led[fled_index].en_mled, fled->torch_on_cnt);

 		if (fled->pdata->led[fled_index].en_mled == true) {
 			goto out_skip;
 		}

 		if (fled->torch_on_cnt == 0) {
 			sm5713_fled_check_vbus(fled);
 			muic_check_fled_state(1, FLED_MODE_TORCH);
 			sm5713_usbpd_check_fled_state(1, FLED_MODE_TORCH);
 			sm5713_charger_oper_push_event(SM5713_CHARGER_OP_EVENT_TORCH, 1);
 		}
 		sm5713_fled_control(fled_index, FLED_MODE_TORCH);

 		fled->pdata->led[fled_index].en_mled = true;
 		fled->torch_on_cnt++;
 	}

 out_skip:
 	ret = count;

 out_p:
 	mutex_unlock(&fled->fled_mutex);

 	return count;
 }

 static ssize_t sm5713_rear_flash2_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
 	int fled_index = SM5713_FLED_INDEX_1;
 	struct sm5713_fled_data *fled = g_sm5713_fled;

 	if (g_sm5713_fled == NULL) {
 		pr_err("sm5713-fled: %s: g_sm5713_fled is NULL\n", __func__);
 		return -ENODEV;
 	}

 	if (IS_ERR_VALUE((unsigned long) fled_index)) {
 		return -ENOENT;
 	}

 	return sprintf(buf, "%d\n", fled->pdata->led[fled_index].sysfs_input_data);
 }

 static DEVICE_ATTR(rear_flash2, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH, sm5713_rear_flash2_show, sm5713_rear_flash2_store);
 #else /* #if defined (CONFIG_LEDS_SM5713_DUAL_LED) */
 static int get_fled_index(struct device_attribute *attr)
 {
 	int fled_index = -EINVAL;

 	if (strcmp(attr->attr.name, "rear_flash") == 0 || strcmp(attr->attr.name, "rear_torch_flash") == 0) {
 		fled_index = SM5713_FLED_INDEX_1;
 	} else {
 		pr_err("sm5713-fled: flash index not matched (attr=%s) \n", attr->attr.name);
 	}

 	return fled_index;
 }

 static ssize_t sm5713_rear_flash_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 {
 	int fled_index = get_fled_index(attr);
 	u32 store_value;
 	int ret;
 	struct sm5713_fled_data *fled = g_sm5713_fled;

 	if (g_sm5713_fled == NULL) {
 		pr_err("sm5713-fled: %s: g_sm5713_fled NULL \n", __func__);
 		return -ENODEV;
 	}

 	if (IS_ERR_VALUE((unsigned long)fled_index) || (buf == NULL) || kstrtouint(buf, 10, &store_value)) {
 		return -ENXIO;
 	}

 	fled->pdata->led[fled_index].sysfs_input_data = store_value;

 	dev_info(fled->dev, "%s: value=%d\n", __func__, store_value);

 	mutex_lock(&fled->fled_mutex);

 	if (store_value == 0) { /* 0: Torch OFF */
 		if (fled->pdata->led[fled_index].en_mled == false && fled->pdata->led[fled_index].en_fled == false) {
 			goto out_skip;
 		}
 		sm5713_fled_control(fled_index, FLED_MODE_OFF);
 	} else if (store_value == 200) { /* 200 : Flash ON */
 		fled_set_fled_current(fled, fled_index, 0x0); /* Set fled = 600mA */

 		if (fled->pdata->led[fled_index].en_fled == false) {
 			if (fled->flash_on_cnt == 0) {
 				sm5713_charger_oper_push_event(SM5713_CHARGER_OP_EVENT_FLASH, 1);
 			}
 			fled->pdata->led[fled_index].en_fled = true;
 			fled->flash_on_cnt++;
 		}
 		sm5713_fled_control(fled_index, FLED_MODE_FLASH);
 	} else { /* 1, 100, 1001~1010, : Torch ON */
 		/* Main Torch on */
 		if (store_value == 1) {
 			fled_set_mled_current(fled, fled_index, 0x1); /* Set mled = 75mA(0x1) */
 		/* Factory Torch on */
 		} else if (store_value == 100) {
 			fled_set_mled_current(fled, fled_index, 0x7);    /* Set mled=225mA */
 		} else if (store_value >= 1001 && store_value <= 1010) {
 			/* Torch on (Normal) */
 			if (fled->pdata->led[fled_index].apply_torch_brightness_control) {
 				int brigthness_index;
 				brigthness_index = get_brightness_index(store_value);
 				fled_set_mled_current(fled, fled_index, fled->pdata->led[fled_index].torch_brightness_levels[brigthness_index]);
 			} else {
 				if (store_value-1001 > 7)
 					fled_set_mled_current(fled, fled_index, 0x07); /* Max 225mA(0x7)  */
 				else
 					fled_set_mled_current(fled, fled_index, (store_value-1001)); /* 50mA(0x0) ~ 225mA(0x7) at 25mA step */
 			}
 		} else {
 			dev_err(fled->dev, "%s: failed store cmd\n", __func__);
 			ret = -EINVAL;
 			goto out_p;
 		}
 		dev_info(fled->dev, "%s: en_mled=%d, torch_on_cnt = %d \n", __func__, fled->pdata->led[fled_index].en_mled, fled->torch_on_cnt);

 		if (fled->pdata->led[fled_index].en_mled == true) {
 			goto out_skip;
 		}

 		if (fled->torch_on_cnt == 0) {
 			sm5713_fled_check_vbus(fled);
 			muic_check_fled_state(1, FLED_MODE_TORCH);
 			sm5713_usbpd_check_fled_state(1, FLED_MODE_TORCH);
 			sm5713_charger_oper_push_event(SM5713_CHARGER_OP_EVENT_TORCH, 1);
 		}
 		sm5713_fled_control(fled_index, FLED_MODE_TORCH);

 		fled->pdata->led[fled_index].en_mled = true;
 		fled->torch_on_cnt++;
 	}

 out_skip:
 	ret = count;

 out_p:
 	mutex_unlock(&fled->fled_mutex);

 	return count;
 }

 static ssize_t sm5713_rear_flash_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	int fled_index = get_fled_index(attr);
 	struct sm5713_fled_data *fled = g_sm5713_fled;

 	if (g_sm5713_fled == NULL) {
 		pr_err("sm5713-fled: %s: g_sm5713_fled is NULL\n", __func__);
 		return -ENODEV;
 	}

 	if (IS_ERR_VALUE((unsigned long)fled_index)) {
 		return -ENOENT;
 	}

 	return sprintf(buf, "%d\n", fled->pdata->led[fled_index].sysfs_input_data);
 }

 #endif /* #if defined (CONFIG_LEDS_SM5713_DUAL_LED) */


 static DEVICE_ATTR(rear_flash, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH, sm5713_rear_flash_show, sm5713_rear_flash_store);

 static int sm5713_fled_parse_dt(struct device *dev, sm5713_fled_platform_data *pdata)
 {
 	struct device_node *np, *c_np;
 	int fled_index, ret = 0;
 	u32 temp;

 	np = of_find_node_by_name(NULL, "sm5713-fled");
 	if (!np) {
 		dev_err(dev, "%s: can't find sm5713-fled np\n", __func__);
 		return -EINVAL;
 	}

 #if defined (CONFIG_LEDS_SM5713_DUAL_LED)
 	ret = of_property_read_u32_array(np, "torch-led-cnt",
 			pdata->torch_index_cnt, MAX_TORCH_LEVELS_5713);

 	for (temp = 0; temp < MAX_TORCH_LEVELS_5713; temp++) {
 		char name[20];
 		u32 index;
 		sprintf(name, "torch-led-index-%d", temp);
 		dev_info(dev, "num [%d].name [%s]\n", pdata->torch_index_cnt[temp], name);
 		ret = of_property_read_u32_array(np, name,
 			pdata->torch_index[temp], pdata->torch_index_cnt[temp]);
 		for (index = 0; index < pdata->torch_index_cnt[temp]; index++) {
 			dev_info(dev, "value [%d].\t", pdata->torch_index[temp][index]);
 		}
 	}
 #endif /* #if defined (CONFIG_LEDS_SM5713_DUAL_LED) */
 	for_each_child_of_node(np, c_np) {
 		ret = of_property_read_u32(c_np, "id", &fled_index);
 		if (ret) {
 			pr_err("sm5713-fled: %s: fail to get a id\n", __func__);
 			return ret;
 		}

 		of_property_read_u32(c_np, "flash-brightness", &temp);
 		pdata->led[fled_index].flash_brightness = (temp & 0xff);
 		of_property_read_u32(c_np, "preflash-brightness", &temp);
 		pdata->led[fled_index].preflash_brightness = (temp & 0xff);
 		of_property_read_u32(c_np, "torch-brightness", &temp);
 		pdata->led[fled_index].torch_brightness = (temp & 0xff);

 		ret = of_property_read_u32_array(c_np, "torch-brightness-levels",
 				pdata->led[fled_index].torch_brightness_levels,
 				MAX_TORCH_LEVELS_5713);
 		if (ret) {
 			pdata->led[fled_index].apply_torch_brightness_control = false;
 		} else {
 			pdata->led[fled_index].apply_torch_brightness_control = true;
 		}

 		of_property_read_u32(c_np, "timeout", &temp);
 		pdata->led[fled_index].timeout = (temp & 0xff);

 		pdata->led[fled_index].fen_pin = of_get_named_gpio(c_np, "flash-en-gpio", 0);
 		pdata->led[fled_index].men_pin = of_get_named_gpio(c_np, "torch-en-gpio", 0);

 		dev_info(dev, "%s: f_cur=0x%x, pre_cur=0x%x, t_cur=0x%x, tout=%d, gpio=%d:%d\n",
 				__func__, pdata->led[fled_index].flash_brightness, pdata->led[fled_index].preflash_brightness,
 				pdata->led[fled_index].torch_brightness, pdata->led[fled_index].timeout,
 				pdata->led[fled_index].fen_pin, pdata->led[fled_index].men_pin);
 	}

 	dev_info(dev, "%s: parse dt done.\n", __func__);
 	return 0;
 }

 static void sm5713_fled_init(struct sm5713_fled_data *fled)
 {
 	int i;

 	for (i = 0; i < SM5713_FLED_MAX_NUM; ++i) {

 		fled_set_mode(fled, i, FLED_MODE_OFF);
 		fled->pdata->led[i].en_mled = 0;
 		fled->pdata->led[i].en_fled = 0;
 		fled->pdata->led[i].pre_fled = 0;
 		fled->pdata->led[i].used_gpio_ctrl = 0;
 	}

 	fled->torch_on_cnt = 0;
 	fled->flash_on_cnt = 0;
 	fled->flash_prepare_cnt = 0;

 	mutex_init(&fled->fled_mutex);
 }

 static int sm5713_fled_probe(struct platform_device *pdev)
 {
 	struct sm5713_dev *sm5713 = dev_get_drvdata(pdev->dev.parent);
 	struct sm5713_fled_data *fled;
 	int ret = 0;

 	dev_info(&pdev->dev, "sm5713 fled probe start (rev=%d)\n", sm5713->pmic_rev);

 	fled = devm_kzalloc(&pdev->dev, sizeof(struct sm5713_fled_data), GFP_KERNEL);
 	if (unlikely(!fled)) {
 		dev_err(&pdev->dev, "%s: fail to alloc_devm\n", __func__);
 		return -ENOMEM;
 	}
 	fled->dev = &pdev->dev;
 	fled->i2c = sm5713->charger;

 	fled->pdata = devm_kzalloc(&pdev->dev, sizeof(sm5713_fled_platform_data), GFP_KERNEL);
 	if (unlikely(!fled->pdata)) {
 		dev_err(fled->dev, "%s: fail to alloc_pdata\n", __func__);
 		ret = -ENOMEM;
 		goto free_dev;
 	}
 	ret = sm5713_fled_parse_dt(fled->dev, fled->pdata);
 	if (ret < 0) {
 		goto free_pdata;
 	}

 	sm5713_fled_init(fled);
 	g_sm5713_fled = fled;

 	if (IS_ERR_OR_NULL(camera_class)) {
 		dev_err(fled->dev, "%s: can't find camera_class sysfs object, didn't used rear_flash attribute\n", __func__);
 		goto free_pdata;
 	}

 	fled->rear_fled_dev = device_create(camera_class, NULL, 0, NULL, "flash");
 	if (IS_ERR(fled->rear_fled_dev)) {
 		dev_err(fled->dev, "%s failed create device for rear_flash\n", __func__);
 		goto free_pdata;
 	}
 	fled->rear_fled_dev->parent = fled->dev;

 	ret = device_create_file(fled->rear_fled_dev, &dev_attr_rear_flash);
 	if (IS_ERR_VALUE((unsigned long)ret)) {
 		dev_err(fled->dev, "%s failed create device file for rear_flash\n", __func__);
 		goto free_device;
 	}

 #if defined (CONFIG_LEDS_SM5713_DUAL_LED)
 	ret = device_create_file(fled->rear_fled_dev, &dev_attr_rear_flash2);
 	if (IS_ERR_VALUE((unsigned long) ret)) {
 		dev_err(fled->dev, "%s failed create device file for rear_flash2\n",
 				__func__);
 		goto free_device;
 	}
 #endif

 	dev_info(&pdev->dev, "sm5713 fled probe done.\n");

 	return 0;

 free_device:
 	device_destroy(camera_class, fled->rear_fled_dev->devt);
 free_pdata:
 	devm_kfree(&pdev->dev, fled->pdata);
 free_dev:
 	devm_kfree(&pdev->dev, fled);

 	return ret;
 }

 static int sm5713_fled_remove(struct platform_device *pdev)
 {
 	struct sm5713_fled_data *fled = platform_get_drvdata(pdev);
 	int i = 0;

 #if defined (CONFIG_LEDS_SM5713_DUAL_LED)
 	device_remove_file(fled->rear_fled_dev, &dev_attr_rear_flash2);
 #endif
 	device_remove_file(fled->rear_fled_dev, &dev_attr_rear_flash);

 	device_destroy(camera_class, fled->rear_fled_dev->devt);

 	for (i = 0; i < SM5713_FLED_MAX_NUM ; i++)
 		fled_set_mode(fled, i, FLED_MODE_OFF);

 	platform_set_drvdata(pdev, NULL);

 	devm_kfree(&pdev->dev, fled->pdata);
 	devm_kfree(&pdev->dev, fled);

 	return 0;
 }

 static struct of_device_id sm5713_fled_match_table[] = {
 	{ .compatible = "siliconmitus,sm5713-fled",},
 	{},
 };

 static const struct platform_device_id sm5713_fled_id[] = {
 	{"sm5713-fled", 0},
 	{},
 };

 static struct platform_driver sm5713_led_driver = {
 	.driver = {
 		.name  = "sm5713-fled",
 		.owner = THIS_MODULE,
 		.of_match_table = sm5713_fled_match_table,
 		},
 	.probe  = sm5713_fled_probe,
 	.remove = sm5713_fled_remove,
 	.id_table = sm5713_fled_id,
 };

 static int __init sm5713_led_driver_init(void)
 {
 	return platform_driver_register(&sm5713_led_driver);
 }
 module_init(sm5713_led_driver_init);

 static void __exit sm5713_led_driver_exit(void)
 {
 	platform_driver_unregister(&sm5713_led_driver);
 }
 module_exit(sm5713_led_driver_exit);


 MODULE_DESCRIPTION("SM5713 LED driver");
 MODULE_AUTHOR("Samsung Electronics");
 MODULE_LICENSE("GPL");