drivers/amlogic/media/vout/lcd/lcd_extern/i2c_ANX6862_7911.c - manifest_repos/kernel - Git at Google

 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
 /*
  *
  * Copyright (C) 2019 Amlogic, Inc. All rights reserved.
  *
  */

 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/i2c.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/of.h>
 #include <linux/amlogic/media/vout/lcd/lcd_extern.h>
 #include "lcd_extern.h"

 #define LCD_EXTERN_NAME			"i2c_ANX6862_7911"

 #define LCD_EXTERN_I2C_ADDR		(0x20 >> 1) /* ANX6862 7bit address */
 #define LCD_EXTERN_I2C_ADDR2		(0x74 >> 1) /* ANX7911 7bit address */

 static unsigned char ANX6862_NVM_wr[] = {0xff, 0x80};
 static unsigned char ANX7911_NVM_wr[] = {0x00, 0x0a};

 #define ANX6862_REG_CNT   12
 #define ANX7911_REG_CNT   23

 static int lcd_extern_reg_read(struct lcd_extern_dev_s *edev,
 			       unsigned char reg, unsigned char *buf)
 {
 	struct aml_lcd_extern_i2c_dev_s *i2c_dev;
 	unsigned char tmp;
 	int ret = 0;

 	tmp = reg;
 	if (edev->config.addr_sel)
 		i2c_dev = edev->i2c_dev[1];
 	else
 		i2c_dev = edev->i2c_dev[0];
 	if (!i2c_dev) {
 		EXTERR("invalid i2c device\n");
 		return -1;
 	}
 	lcd_extern_i2c_read(i2c_dev->client, &tmp, 1);
 	buf[0] = tmp;

 	return ret;
 }

 static int lcd_extern_reg_write(struct lcd_extern_dev_s *edev,
 				unsigned char *buf, unsigned int len)
 {
 	struct aml_lcd_extern_i2c_dev_s *i2c_dev;
 	int ret = 0;

 	if (edev->config.addr_sel)
 		i2c_dev = edev->i2c_dev[1];
 	else
 		i2c_dev = edev->i2c_dev[0];
 	if (!i2c_dev) {
 		EXTERR("invalid i2c device\n");
 		return -1;
 	}
 	lcd_extern_i2c_write(i2c_dev->client, buf, 2);

 	return ret;
 }

 static int lcd_extern_power_cmd_dynamic_size(struct lcd_extern_driver_s *edrv,
 					     struct lcd_extern_dev_s *edev,
 					     unsigned char *table, unsigned char flag)
 {
 	int i = 0, j, step = 0, max_len;
 	unsigned char type, cmd_size, type_chk, type_other;
 	struct aml_lcd_extern_i2c_dev_s *i2c_dev;
 	int delay_bypass, delay_ms, ret = 0;

 	if (!table)
 		return -1;

 	max_len = edev->config.table_init_on_cnt;
 	if (flag) {
 		i2c_dev = edev->i2c_dev[1];
 		type_chk = LCD_EXT_CMD_TYPE_CMD2;
 		type_other = LCD_EXT_CMD_TYPE_CMD;
 	} else {
 		i2c_dev = edev->i2c_dev[0];
 		type_chk = LCD_EXT_CMD_TYPE_CMD;
 		type_other = LCD_EXT_CMD_TYPE_CMD2;
 	}
 	if (!i2c_dev) {
 		EXTERR("invalid i2c%d device\n", flag);
 		return -1;
 	}

 	delay_bypass = 0;
 	while ((i + 1) < max_len) {
 		type = table[i];
 		if (type == LCD_EXT_CMD_TYPE_END)
 			break;
 		cmd_size = table[i + 1];
 		if (cmd_size == 0)
 			goto power_cmd_dynamic_next;
 		if ((i + 2 + cmd_size) > max_len)
 			break;

 		if (type == type_chk) {
 			if (lcd_debug_print_flag & LCD_DBG_PR_NORMAL) {
 				EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n",
 				      __func__, step, type, table[i + 1]);
 			}
 			ret = lcd_extern_i2c_write(i2c_dev->client, &table[i + 2], cmd_size);
 			delay_bypass = 0;
 		} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
 			if (delay_bypass)
 				goto power_cmd_dynamic_next;
 			if (lcd_debug_print_flag & LCD_DBG_PR_NORMAL) {
 				EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n",
 				      __func__, step, type, table[i + 1]);
 			}
 			delay_ms = 0;
 			for (j = 0; j < cmd_size; j++)
 				delay_ms += table[i + 2 + j];
 			if (delay_ms > 0)
 				lcd_delay_ms(delay_ms);
 		} else if (type == type_other) {
 			delay_bypass = 1;
 		} else {
 			delay_bypass = 1;
 			EXTERR("%s(%d: %s): type 0x%02x invalid\n",
 			       __func__, edev->config.index,
 			       edev->config.name, type);
 		}
 power_cmd_dynamic_next:
 		i += (cmd_size + 2);
 		step++;
 	}

 	return ret;
 }

 static int lcd_extern_power_cmd(struct lcd_extern_driver_s *edrv,
 				struct lcd_extern_dev_s *edev, unsigned char flag)
 {
 	unsigned char *table;
 	unsigned char cmd_size;
 	int ret = 0;

 	table = edev->config.table_init_on;
 	cmd_size = edev->config.cmd_size;
 	if (cmd_size != LCD_EXT_CMD_SIZE_DYNAMIC) {
 		EXTERR("%s: cmd_size %d is invalid\n", __func__, cmd_size);
 		return -1;
 	}
 	if (!table) {
 		EXTERR("%s: init_on_table is NULL\n", __func__);
 		return -1;
 	}

 	ret = lcd_extern_power_cmd_dynamic_size(edrv, edev, table, flag);

 	EXTPR("%s: %s(%d): %d\n",
 	      __func__, edev->config.name, edev->config.index, flag);
 	return ret;
 }

 static int lcd_extern_check_reg_dynamic_size(struct lcd_extern_dev_s *edev,
 					     unsigned char *table,
 					     unsigned char *chk_table, int cnt,
 					     unsigned char flag)
 {
 	int i = 0, step = 0, max_len;
 	unsigned char type, cmd_size, type_chk, reg;
 	int ret = 0;

 	if (!table)
 		return -1;

 	max_len = edev->config.table_init_on_cnt;
 	type_chk = (flag) ? LCD_EXT_CMD_TYPE_CMD2 : LCD_EXT_CMD_TYPE_CMD;

 	while ((i + 1) < max_len) {
 		type = table[i];
 		if (type == LCD_EXT_CMD_TYPE_END)
 			break;
 		cmd_size = table[i + 1];
 		if (cmd_size == 0) {
 			i += 2;
 			continue;
 		}
 		if ((i + 2 + cmd_size) > max_len)
 			break;

 		if (type == type_chk) {
 			reg = table[i + 2];
 			if (lcd_debug_print_flag & LCD_DBG_PR_NORMAL) {
 				EXTPR("%s: step %d: reg 0x%02x, val 0x%02x,0x%02x\n",
 				      __func__, step,
 				      reg, table[i + 3], chk_table[reg]);
 			}
 			if (chk_table[reg] != table[i + 3])
 				return -1;
 		}
 		i += (cmd_size + 2);
 		step++;
 	}

 	return ret;
 }

 static int lcd_extern_init_check(struct lcd_extern_dev_s *edev, unsigned char flag)
 {
 	struct aml_lcd_extern_i2c_dev_s *i2c_dev;
 	unsigned char *table, *chk_table, cmd_size;
 	int cnt, ret = 0;

 	table = edev->config.table_init_on;
 	cmd_size = edev->config.cmd_size;
 	cnt = (flag) ? ANX7911_REG_CNT : ANX6862_REG_CNT;
 	if (cmd_size != LCD_EXT_CMD_SIZE_DYNAMIC) {
 		EXTERR("%s: cmd_size %d is invalid\n", __func__, cmd_size);
 		return -1;
 	}
 	if (!table) {
 		EXTERR("%s: init_table %d is NULL\n", __func__, flag);
 		return -1;
 	}
 	if (flag)
 		i2c_dev = edev->i2c_dev[1];
 	else
 		i2c_dev = edev->i2c_dev[0];
 	if (!i2c_dev) {
 		EXTERR("%s: i2c_dev %d is NULL\n", __func__, flag);
 		return -1;
 	}

 	chk_table = kcalloc(cnt, sizeof(unsigned char), GFP_KERNEL);
 	if (!chk_table)
 		return -1;

 	ret = lcd_extern_i2c_read(i2c_dev->client, chk_table, cnt);
 	if (ret) {
 		EXTERR("%s: i2c read error\n", __func__);
 		return -1;
 	}

 	ret = lcd_extern_check_reg_dynamic_size(table, chk_table, cnt, flag);

 	return ret;
 }

 static int lcd_extern_power_on(struct lcd_extern_driver_s *edrv,
 			       struct lcd_extern_dev_s *edev)
 {
 	int ret;

 	lcd_extern_pinmux_set(edrv, 1);

 	/* check voltage is init or not */
 	/* step1: ANX6862 */
 	if (!edev->i2c_dev[0]) {
 		EXTERR("%s: invalid i2c0_dev\n", __func__);
 		return -1;
 	}
 	ret = lcd_extern_init_check(edev, 0);
 	if (ret) {
 		EXTPR("ANX6862: need init voltage and NVM write\n");
 		/* init voltage */
 		lcd_extern_power_cmd(edrv, edev, 0);
 		/* NVM write */
 		lcd_extern_i2c_write(edev->i2c_dev[0]->client, ANX6862_NVM_wr, 2);
 	}

 	/* step2: ANX7911 */
 	if (!edev->i2c_dev[1]) {
 		EXTERR("%s: invalid i2c1_dev\n", __func__);
 		return -1;
 	}
 	ret = lcd_extern_init_check(edev, 1);
 	if (ret) {
 		EXTPR("ANX7911: need init voltage and NVM write\n");
 		/* init voltage */
 		lcd_extern_power_cmd(edrv, edev, 1);
 		/* NVM write */
 		lcd_extern_i2c_write(edev->i2c_dev[1]->client, ANX7911_NVM_wr, 2);
 	}

 	EXTPR("%s\n", __func__);
 	return ret;
 }

 static int lcd_extern_power_off(struct lcd_extern_driver_s *edrv,
 				struct lcd_extern_dev_s *edev)
 {
 	lcd_extern_pinmux_set(edrv, 0);
 	return 0;
 }

 static int lcd_extern_driver_update(struct lcd_extern_driver_s *edrv,
 				    struct lcd_extern_dev_s *edev)
 {
 	if (edev->config.table_init_loaded == 0) {
 		EXTERR("[%d]: dev_%d(%s): table_init is invalid\n",
 		       edrv->index, edev->dev_index, edev->config.name);
 		return -1;
 	}

 	ext_drv->reg_read  = lcd_extern_reg_read;
 	ext_drv->reg_write = lcd_extern_reg_write;
 	ext_drv->power_on  = lcd_extern_power_on;
 	ext_drv->power_off = lcd_extern_power_off;

 	return 0;
 }

 int lcd_extern_i2c_ANX6862_7911_probe(struct lcd_extern_driver_s *edrv,
 				      struct lcd_extern_dev_s *edev)
 {
 	int ret = 0;

 	if (!edrv || !edev) {
 		EXTERR("%s: %s dev is null\n", __func__, LCD_EXTERN_NAME);
 		return -1;
 	}

 	edev->i2c_dev[0] = lcd_extern_get_i2c_device(edev->config.i2c_addr);
 	if (edev->i2c_dev[0]) {
 		EXTERR("[%d]: %s: dev_%d invalid i2c device\n",
 		       edrv->index, __func__, edev->dev_index);
 		return -1;
 	}
 	EXTPR("[%d]: %s: get i2c device: %s, addr 0x%02x OK\n",
 	      edrv->index, __func__, edev->dev_index,
 	      edev->i2c_dev[0]->name, edev->i2c_dev[0]->client->addr);

 	edev->i2c_dev[1] = lcd_extern_get_i2c_device(edev->config.i2c_addr2);
 	if (edev->i2c_dev[1]) {
 		EXTERR("[%d]: %s: dev_%d invalid i2c2 device\n",
 		       edrv->index, __func__, edev->dev_index);
 		return -1;
 	}
 	EXTPR("[%d]: %s: get i2c2 device: %s, addr 0x%02x OK\n",
 	      edrv->index, __func__, edev->dev_index,
 	      edev->i2c_dev[1]->name, edev->i2c_dev[1]->client->addr);

 	ret = lcd_extern_driver_update(edrv, edev);
 	if (lcd_debug_print_flag & LCD_DBG_PR_NORMAL) {
 		EXTPR("[%d]: %s: dev_%d %d\n",
 		      edrv->index, __func__, edev->dev_index, ret);
 	}

 	return ret;
 }
	// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
	/*
	*
	* Copyright (C) 2019 Amlogic, Inc. All rights reserved.
	*
	*/

	#include <linux/kernel.h>
	#include <linux/module.h>
	#include <linux/interrupt.h>
	#include <linux/platform_device.h>
	#include <linux/i2c.h>
	#include <linux/clk.h>
	#include <linux/delay.h>
	#include <linux/slab.h>
	#include <linux/of.h>
	#include <linux/amlogic/media/vout/lcd/lcd_extern.h>
	#include "lcd_extern.h"

	#define LCD_EXTERN_NAME "i2c_ANX6862_7911"

	#define LCD_EXTERN_I2C_ADDR (0x20 >> 1) /* ANX6862 7bit address */
	#define LCD_EXTERN_I2C_ADDR2 (0x74 >> 1) /* ANX7911 7bit address */

	static unsigned char ANX6862_NVM_wr[] = {0xff, 0x80};
	static unsigned char ANX7911_NVM_wr[] = {0x00, 0x0a};

	#define ANX6862_REG_CNT 12
	#define ANX7911_REG_CNT 23

	static int lcd_extern_reg_read(struct lcd_extern_dev_s *edev,
	unsigned char reg, unsigned char *buf)
	{
	struct aml_lcd_extern_i2c_dev_s *i2c_dev;
	unsigned char tmp;
	int ret = 0;

	tmp = reg;
	if (edev->config.addr_sel)
	i2c_dev = edev->i2c_dev[1];
	else
	i2c_dev = edev->i2c_dev[0];
	if (!i2c_dev) {
	EXTERR("invalid i2c device\n");
	return -1;
	}
	lcd_extern_i2c_read(i2c_dev->client, &tmp, 1);
	buf[0] = tmp;

	return ret;
	}

	static int lcd_extern_reg_write(struct lcd_extern_dev_s *edev,
	unsigned char *buf, unsigned int len)
	{
	struct aml_lcd_extern_i2c_dev_s *i2c_dev;
	int ret = 0;

	if (edev->config.addr_sel)
	i2c_dev = edev->i2c_dev[1];
	else
	i2c_dev = edev->i2c_dev[0];
	if (!i2c_dev) {
	EXTERR("invalid i2c device\n");
	return -1;
	}
	lcd_extern_i2c_write(i2c_dev->client, buf, 2);

	return ret;
	}

	static int lcd_extern_power_cmd_dynamic_size(struct lcd_extern_driver_s *edrv,
	struct lcd_extern_dev_s *edev,
	unsigned char *table, unsigned char flag)
	{
	int i = 0, j, step = 0, max_len;
	unsigned char type, cmd_size, type_chk, type_other;
	struct aml_lcd_extern_i2c_dev_s *i2c_dev;
	int delay_bypass, delay_ms, ret = 0;

	if (!table)
	return -1;

	max_len = edev->config.table_init_on_cnt;
	if (flag) {
	i2c_dev = edev->i2c_dev[1];
	type_chk = LCD_EXT_CMD_TYPE_CMD2;
	type_other = LCD_EXT_CMD_TYPE_CMD;
	} else {
	i2c_dev = edev->i2c_dev[0];
	type_chk = LCD_EXT_CMD_TYPE_CMD;
	type_other = LCD_EXT_CMD_TYPE_CMD2;
	}
	if (!i2c_dev) {
	EXTERR("invalid i2c%d device\n", flag);
	return -1;
	}

	delay_bypass = 0;
	while ((i + 1) < max_len) {
	type = table[i];
	if (type == LCD_EXT_CMD_TYPE_END)
	break;
	cmd_size = table[i + 1];
	if (cmd_size == 0)
	goto power_cmd_dynamic_next;
	if ((i + 2 + cmd_size) > max_len)
	break;

	if (type == type_chk) {
	if (lcd_debug_print_flag & LCD_DBG_PR_NORMAL) {
	EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n",
	__func__, step, type, table[i + 1]);
	}
	ret = lcd_extern_i2c_write(i2c_dev->client, &table[i + 2], cmd_size);
	delay_bypass = 0;
	} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
	if (delay_bypass)
	goto power_cmd_dynamic_next;
	if (lcd_debug_print_flag & LCD_DBG_PR_NORMAL) {
	EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n",
	__func__, step, type, table[i + 1]);
	}
	delay_ms = 0;
	for (j = 0; j < cmd_size; j++)
	delay_ms += table[i + 2 + j];
	if (delay_ms > 0)
	lcd_delay_ms(delay_ms);
	} else if (type == type_other) {
	delay_bypass = 1;
	} else {
	delay_bypass = 1;
	EXTERR("%s(%d: %s): type 0x%02x invalid\n",
	__func__, edev->config.index,
	edev->config.name, type);
	}
	power_cmd_dynamic_next:
	i += (cmd_size + 2);
	step++;
	}

	return ret;
	}

	static int lcd_extern_power_cmd(struct lcd_extern_driver_s *edrv,
	struct lcd_extern_dev_s *edev, unsigned char flag)
	{
	unsigned char *table;
	unsigned char cmd_size;
	int ret = 0;

	table = edev->config.table_init_on;
	cmd_size = edev->config.cmd_size;
	if (cmd_size != LCD_EXT_CMD_SIZE_DYNAMIC) {
	EXTERR("%s: cmd_size %d is invalid\n", __func__, cmd_size);
	return -1;
	}
	if (!table) {
	EXTERR("%s: init_on_table is NULL\n", __func__);
	return -1;
	}

	ret = lcd_extern_power_cmd_dynamic_size(edrv, edev, table, flag);

	EXTPR("%s: %s(%d): %d\n",
	__func__, edev->config.name, edev->config.index, flag);
	return ret;
	}

	static int lcd_extern_check_reg_dynamic_size(struct lcd_extern_dev_s *edev,
	unsigned char *table,
	unsigned char *chk_table, int cnt,
	unsigned char flag)
	{
	int i = 0, step = 0, max_len;
	unsigned char type, cmd_size, type_chk, reg;
	int ret = 0;

	if (!table)
	return -1;

	max_len = edev->config.table_init_on_cnt;
	type_chk = (flag) ? LCD_EXT_CMD_TYPE_CMD2 : LCD_EXT_CMD_TYPE_CMD;

	while ((i + 1) < max_len) {
	type = table[i];
	if (type == LCD_EXT_CMD_TYPE_END)
	break;
	cmd_size = table[i + 1];
	if (cmd_size == 0) {
	i += 2;
	continue;
	}
	if ((i + 2 + cmd_size) > max_len)
	break;

	if (type == type_chk) {
	reg = table[i + 2];
	if (lcd_debug_print_flag & LCD_DBG_PR_NORMAL) {
	EXTPR("%s: step %d: reg 0x%02x, val 0x%02x,0x%02x\n",
	__func__, step,
	reg, table[i + 3], chk_table[reg]);
	}
	if (chk_table[reg] != table[i + 3])
	return -1;
	}
	i += (cmd_size + 2);
	step++;
	}

	return ret;
	}

	static int lcd_extern_init_check(struct lcd_extern_dev_s *edev, unsigned char flag)
	{
	struct aml_lcd_extern_i2c_dev_s *i2c_dev;
	unsigned char table, chk_table, cmd_size;
	int cnt, ret = 0;

	table = edev->config.table_init_on;
	cmd_size = edev->config.cmd_size;
	cnt = (flag) ? ANX7911_REG_CNT : ANX6862_REG_CNT;
	if (cmd_size != LCD_EXT_CMD_SIZE_DYNAMIC) {
	EXTERR("%s: cmd_size %d is invalid\n", __func__, cmd_size);
	return -1;
	}
	if (!table) {
	EXTERR("%s: init_table %d is NULL\n", __func__, flag);
	return -1;
	}
	if (flag)
	i2c_dev = edev->i2c_dev[1];
	else
	i2c_dev = edev->i2c_dev[0];
	if (!i2c_dev) {
	EXTERR("%s: i2c_dev %d is NULL\n", __func__, flag);
	return -1;
	}

	chk_table = kcalloc(cnt, sizeof(unsigned char), GFP_KERNEL);
	if (!chk_table)
	return -1;

	ret = lcd_extern_i2c_read(i2c_dev->client, chk_table, cnt);
	if (ret) {
	EXTERR("%s: i2c read error\n", __func__);
	return -1;
	}

	ret = lcd_extern_check_reg_dynamic_size(table, chk_table, cnt, flag);

	return ret;
	}

	static int lcd_extern_power_on(struct lcd_extern_driver_s *edrv,
	struct lcd_extern_dev_s *edev)
	{
	int ret;

	lcd_extern_pinmux_set(edrv, 1);

	/* check voltage is init or not */
	/* step1: ANX6862 */
	if (!edev->i2c_dev[0]) {
	EXTERR("%s: invalid i2c0_dev\n", __func__);
	return -1;
	}
	ret = lcd_extern_init_check(edev, 0);
	if (ret) {
	EXTPR("ANX6862: need init voltage and NVM write\n");
	/* init voltage */
	lcd_extern_power_cmd(edrv, edev, 0);
	/* NVM write */
	lcd_extern_i2c_write(edev->i2c_dev[0]->client, ANX6862_NVM_wr, 2);
	}

	/* step2: ANX7911 */
	if (!edev->i2c_dev[1]) {
	EXTERR("%s: invalid i2c1_dev\n", __func__);
	return -1;
	}
	ret = lcd_extern_init_check(edev, 1);
	if (ret) {
	EXTPR("ANX7911: need init voltage and NVM write\n");
	/* init voltage */
	lcd_extern_power_cmd(edrv, edev, 1);
	/* NVM write */
	lcd_extern_i2c_write(edev->i2c_dev[1]->client, ANX7911_NVM_wr, 2);
	}

	EXTPR("%s\n", __func__);
	return ret;
	}

	static int lcd_extern_power_off(struct lcd_extern_driver_s *edrv,
	struct lcd_extern_dev_s *edev)
	{
	lcd_extern_pinmux_set(edrv, 0);
	return 0;
	}

	static int lcd_extern_driver_update(struct lcd_extern_driver_s *edrv,
	struct lcd_extern_dev_s *edev)
	{
	if (edev->config.table_init_loaded == 0) {
	EXTERR("[%d]: dev_%d(%s): table_init is invalid\n",
	edrv->index, edev->dev_index, edev->config.name);
	return -1;
	}

	ext_drv->reg_read = lcd_extern_reg_read;
	ext_drv->reg_write = lcd_extern_reg_write;
	ext_drv->power_on = lcd_extern_power_on;
	ext_drv->power_off = lcd_extern_power_off;

	return 0;
	}

	int lcd_extern_i2c_ANX6862_7911_probe(struct lcd_extern_driver_s *edrv,
	struct lcd_extern_dev_s *edev)
	{
	int ret = 0;

	if (!edrv \|\| !edev) {
	EXTERR("%s: %s dev is null\n", __func__, LCD_EXTERN_NAME);
	return -1;
	}

	edev->i2c_dev[0] = lcd_extern_get_i2c_device(edev->config.i2c_addr);
	if (edev->i2c_dev[0]) {
	EXTERR("[%d]: %s: dev_%d invalid i2c device\n",
	edrv->index, __func__, edev->dev_index);
	return -1;
	}
	EXTPR("[%d]: %s: get i2c device: %s, addr 0x%02x OK\n",
	edrv->index, __func__, edev->dev_index,
	edev->i2c_dev[0]->name, edev->i2c_dev[0]->client->addr);

	edev->i2c_dev[1] = lcd_extern_get_i2c_device(edev->config.i2c_addr2);
	if (edev->i2c_dev[1]) {
	EXTERR("[%d]: %s: dev_%d invalid i2c2 device\n",
	edrv->index, __func__, edev->dev_index);
	return -1;
	}
	EXTPR("[%d]: %s: get i2c2 device: %s, addr 0x%02x OK\n",
	edrv->index, __func__, edev->dev_index,
	edev->i2c_dev[1]->name, edev->i2c_dev[1]->client->addr);

	ret = lcd_extern_driver_update(edrv, edev);
	if (lcd_debug_print_flag & LCD_DBG_PR_NORMAL) {
	EXTPR("[%d]: %s: dev_%d %d\n",
	edrv->index, __func__, edev->dev_index, ret);
	}

	return ret;
	}