drivers/amlogic/media/vout/lcd/lcd_extern/ext_default.c - u-boot - Git at Google

 /*
  * drivers/amlogic/media/vout/lcd/lcd_extern/ext_default.c
  *
  * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
  *
  * 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.
  *
  * You should have received a copy of the GNU General Public License along
  * with this program; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */

 #include <common.h>
 #include <malloc.h>
 #include <asm/arch/gpio.h>
 #include <fdtdec.h>
 #include <amlogic/media/vout/lcd/aml_lcd.h>
 #include <amlogic/media/vout/lcd/lcd_extern.h>
 #include "lcd_extern.h"
 #include "../lcd_common.h"
 #include "../lcd_reg.h"

 #define LCD_EXTERN_NAME           "ext_default"

 static struct lcd_extern_config_s *ext_config;
 static unsigned char spi_gpio_cs = 0xff;
 static unsigned char spi_gpio_clk = 0xff;
 static unsigned char spi_gpio_data = 0xff;

 static void set_lcd_csb(unsigned int v)
 {
 	lcd_ext_gpio_set(spi_gpio_cs, v);
 	udelay(ext_config->spi_delay_us);
 }

 static void set_lcd_scl(unsigned int v)
 {
 	lcd_ext_gpio_set(spi_gpio_clk, v);
 	udelay(ext_config->spi_delay_us);
 }

 static void set_lcd_sda(unsigned int v)
 {
 	lcd_ext_gpio_set(spi_gpio_data, v);
 	udelay(ext_config->spi_delay_us);
 }

 static void spi_gpio_init(void)
 {
 	set_lcd_csb(1);
 	set_lcd_scl(1);
 	set_lcd_sda(1);
 }

 static void spi_gpio_off(void)
 {
 	set_lcd_sda(0);
 	set_lcd_scl(0);
 	set_lcd_csb(0);
 }

 static void spi_write_byte(unsigned char data)
 {
 	int i;

 	for (i = 0; i < 8; i++) {
 		set_lcd_scl(0);
 		if (data & 0x80)
 			set_lcd_sda(1);
 		else
 			set_lcd_sda(0);
 		data <<= 1;
 		set_lcd_scl(1);
 	}
 }

 static int lcd_extern_spi_write(unsigned char *buf, int len)
 {
 	int i;

 	if (len < 2) {
 		EXTERR("%s: len %d error\n", __func__, len);
 		return -1;
 	}

 	set_lcd_csb(0);

 	for (i = 0; i < len; i++)
 		spi_write_byte(buf[i]);

 	set_lcd_csb(1);
 	set_lcd_scl(1);
 	set_lcd_sda(1);
 	udelay(ext_config->spi_delay_us);

 	return 0;
 }

 static int lcd_extern_reg_read(unsigned char reg, unsigned char *buf)
 {
 	int ret = 0;

 	return ret;
 }

 static int lcd_extern_reg_write(unsigned char reg, unsigned char value)
 {
 	int ret = 0;

 	return ret;
 }

 static int lcd_extern_power_cmd_dynamic_size(unsigned char *table, int flag)
 {
 	int i = 0, j = 0, max_len = 0, step = 0;
 	unsigned char type, cmd_size;
 	int delay_ms, ret = 0;

 	if (flag)
 		max_len = ext_config->table_init_on_cnt;
 	else
 		max_len = ext_config->table_init_off_cnt;

 	switch (ext_config->type) {
 	case LCD_EXTERN_I2C:
 		while ((i + 1) < max_len) {
 			type = table[i];
 			if (type == LCD_EXT_CMD_TYPE_END)
 				break;
 			if (lcd_debug_print_flag) {
 				EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n",
 					__func__, step, type, table[i+1]);
 			}
 			cmd_size = table[i+1];
 			if (cmd_size == 0)
 				goto power_cmd_dynamic_i2c_next;
 			if ((i + 2 + cmd_size) > max_len)
 				break;

 			if (type == LCD_EXT_CMD_TYPE_NONE) {
 				/* do nothing */
 			} else if (type == LCD_EXT_CMD_TYPE_GPIO) {
 				if (cmd_size < 2) {
 					EXTERR("step %d: invalid cmd_size %d for GPIO\n",
 						step, cmd_size);
 					goto power_cmd_dynamic_i2c_next;
 				}
 				lcd_ext_gpio_set(table[i+2], table[i+3]);
 				if (cmd_size > 2) {
 					if (table[i+4] > 0)
 						mdelay(table[i+4]);
 				}
 			} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
 				delay_ms = 0;
 				for (j = 0; j < cmd_size; j++)
 					delay_ms += table[i+2+j];
 				if (delay_ms > 0)
 					mdelay(delay_ms);
 			} else if (type == LCD_EXT_CMD_TYPE_CMD) {
 				ret = lcd_extern_i2c_write(ext_config->i2c_bus,
 					ext_config->i2c_addr,
 					&table[i+2], cmd_size);
 			} else if (type == LCD_EXT_CMD_TYPE_CMD2) {
 				ret = lcd_extern_i2c_write(ext_config->i2c_bus,
 					ext_config->i2c_addr2,
 					&table[i+2], cmd_size);
 			} else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) {
 				ret = lcd_extern_i2c_write(ext_config->i2c_bus,
 					ext_config->i2c_addr,
 					&table[i+2], (cmd_size-1));
 				if (table[i+1+cmd_size] > 0)
 					mdelay(table[i+1+cmd_size]);
 			} else if (type == LCD_EXT_CMD_TYPE_CMD2_DELAY) {
 				ret = lcd_extern_i2c_write(ext_config->i2c_bus,
 					ext_config->i2c_addr2,
 					&table[i+2], (cmd_size - 1));
 				if (table[i+1+cmd_size] > 0)
 					mdelay(table[i+1+cmd_size]);
 			} else {
 				EXTERR("%s: %s(%d): type 0x%02x invalid\n",
 					__func__, ext_config->name,
 					ext_config->index, type);
 			}
 power_cmd_dynamic_i2c_next:
 			i += (cmd_size + 2);
 			step++;
 		}
 		break;
 	case LCD_EXTERN_SPI:
 		while ((i + 1) < max_len) {
 			type = table[i];
 			if (type == LCD_EXT_CMD_TYPE_END)
 				break;
 			if (lcd_debug_print_flag) {
 				EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n",
 					__func__, step, type, table[i+1]);
 			}
 			cmd_size = table[i+1];
 			if (cmd_size == 0)
 				goto power_cmd_dynamic_spi_next;
 			if ((i + 2 + cmd_size) > max_len)
 				break;

 			if (type == LCD_EXT_CMD_TYPE_NONE) {
 				/* do nothing */
 			} else if (type == LCD_EXT_CMD_TYPE_GPIO) {
 				if (cmd_size < 2) {
 					EXTERR("step %d: invalid cmd_size %d for GPIO\n",
 						step, cmd_size);
 					goto power_cmd_dynamic_spi_next;
 				}
 				lcd_ext_gpio_set(table[i+2], table[i+3]);
 				if (cmd_size > 2) {
 					if (table[i+4] > 0)
 						mdelay(table[i+4]);
 				}
 			} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
 				delay_ms = 0;
 				for (j = 0; j < cmd_size; j++)
 					delay_ms += table[i+2+j];
 				if (delay_ms > 0)
 					mdelay(delay_ms);
 			} else if (type == LCD_EXT_CMD_TYPE_CMD) {
 				ret = lcd_extern_spi_write(&table[i+2], cmd_size);
 			} else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) {
 				ret = lcd_extern_spi_write(&table[i+2], (cmd_size-1));
 				if (table[i+1+cmd_size] > 0)
 					mdelay(table[i+1+cmd_size]);
 			} else {
 				EXTERR("%s: %s(%d): type 0x%02x invalid\n",
 					__func__, ext_config->name,
 					ext_config->index, type);
 			}
 power_cmd_dynamic_spi_next:
 			i += (cmd_size + 2);
 			step++;
 		}
 		break;
 	default:
 		EXTERR("%s: %s(%d): extern_type %d is not support\n",
 			__func__, ext_config->name,
 			ext_config->index, ext_config->type);
 		break;
 	}

 	return ret;
 }

 static int lcd_extern_power_cmd_fixed_size(unsigned char *table, int flag)
 {
 	int i = 0, j, max_len = 0, step = 0;
 	unsigned char type, cmd_size;
 	int delay_ms, ret = 0;

 	cmd_size = ext_config->cmd_size;
 	if (cmd_size < 2) {
 		EXTERR("%s: invalid cmd_size %d\n", __func__, cmd_size);
 		return -1;
 	}

 	if (flag)
 		max_len = ext_config->table_init_on_cnt;
 	else
 		max_len = ext_config->table_init_off_cnt;

 	switch (ext_config->type) {
 	case LCD_EXTERN_I2C:
 		while ((i + cmd_size) <= max_len) {
 			type = table[i];
 			if (type == LCD_EXT_CMD_TYPE_END)
 				break;
 			if (lcd_debug_print_flag) {
 				EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n",
 					__func__, step, type, cmd_size);
 			}
 			if (type == LCD_EXT_CMD_TYPE_NONE) {
 				/* do nothing */
 			} else if (type == LCD_EXT_CMD_TYPE_GPIO) {
 				lcd_ext_gpio_set(table[i+1], table[i+2]);
 				if (cmd_size > 3) {
 					if (table[i+3] > 0)
 						mdelay(table[i+3]);
 				}
 			} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
 				delay_ms = 0;
 				for (j = 0; j < (cmd_size - 1); j++)
 					delay_ms += table[i+1+j];
 				if (delay_ms > 0)
 					mdelay(delay_ms);
 			} else if (type == LCD_EXT_CMD_TYPE_CMD) {
 				ret = lcd_extern_i2c_write(ext_config->i2c_bus,
 					ext_config->i2c_addr,
 					&table[i+1], (cmd_size-1));
 			} else if (type == LCD_EXT_CMD_TYPE_CMD2) {
 				ret = lcd_extern_i2c_write(ext_config->i2c_bus,
 					ext_config->i2c_addr2,
 					&table[i+1], (cmd_size-1));
 			} else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) {
 				ret = lcd_extern_i2c_write(ext_config->i2c_bus,
 					ext_config->i2c_addr,
 					&table[i+1], (cmd_size-2));
 				if (table[i+cmd_size-1] > 0)
 					mdelay(table[i+cmd_size-1]);
 			} else if (type == LCD_EXT_CMD_TYPE_CMD2_DELAY) {
 				ret = lcd_extern_i2c_write(ext_config->i2c_bus,
 					ext_config->i2c_addr2,
 					&table[i+1], (cmd_size-2));
 				if (table[i+cmd_size-1] > 0)
 					mdelay(table[i+cmd_size-1]);
 			} else {
 				EXTERR("%s: %s(%d): type 0x%02x invalid\n",
 					__func__, ext_config->name,
 					ext_config->index, type);
 			}
 			i += cmd_size;
 			step++;
 		}
 		break;
 	case LCD_EXTERN_SPI:
 		while ((i + cmd_size) <= max_len) {
 			type = table[i];
 			if (type == LCD_EXT_CMD_TYPE_END)
 				break;
 			if (lcd_debug_print_flag) {
 				EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n",
 					__func__, step, type, cmd_size);
 			}
 			if (type == LCD_EXT_CMD_TYPE_NONE) {
 				/* do nothing */
 			} else if (type == LCD_EXT_CMD_TYPE_GPIO) {
 				lcd_ext_gpio_set(table[i+1], table[i+2]);
 				if (cmd_size > 3) {
 					if (table[i+3] > 0)
 						mdelay(table[i+3]);
 				}
 			} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
 				delay_ms = 0;
 				for (j = 0; j < (cmd_size - 1); j++)
 					delay_ms += table[i+1+j];
 				if (delay_ms > 0)
 					mdelay(delay_ms);
 			} else if (type == LCD_EXT_CMD_TYPE_CMD) {
 				ret = lcd_extern_spi_write(&table[i+1], (cmd_size-1));
 			} else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) {
 				ret = lcd_extern_spi_write(&table[i+1], (cmd_size-2));
 				if (table[i+cmd_size-1] > 0)
 					mdelay(table[i+cmd_size-1]);
 			} else {
 				EXTERR("%s: %s(%d): type 0x%02x invalid\n",
 					__func__, ext_config->name,
 					ext_config->index, type);
 			}
 			i += cmd_size;
 			step++;
 		}
 		break;
 	default:
 		EXTERR("%s: %s(%d): extern_type %d is not support\n",
 			__func__, ext_config->name,
 			ext_config->index, ext_config->type);
 		break;
 	}

 	return ret;
 }

 static int lcd_extern_power_ctrl(int flag)
 {
 	unsigned char *table;
 	int cmd_size;
 	int ret = 0;

 	/* step 1: power prepare */
 	if (ext_config->type == LCD_EXTERN_SPI)
 		spi_gpio_init();

 	/* step 2: power cmd */
 	cmd_size = ext_config->cmd_size;
 	if (flag)
 		table = ext_config->table_init_on;
 	else
 		table = ext_config->table_init_off;
 	if (cmd_size < 1) {
 		EXTERR("%s: cmd_size %d is invalid\n", __func__, cmd_size);
 		ret = -1;
 		goto power_ctrl_next;
 	}
 	if (table == NULL) {
 		EXTERR("%s: init_table %d is NULL\n", __func__, flag);
 		ret = -1;
 		goto power_ctrl_next;
 	}

 	if (cmd_size == LCD_EXT_CMD_SIZE_DYNAMIC)
 		ret = lcd_extern_power_cmd_dynamic_size(table, flag);
 	else
 		ret = lcd_extern_power_cmd_fixed_size(table, flag);

 power_ctrl_next:
 	/* step 3: power finish */
 	if (ext_config->type == LCD_EXTERN_SPI)
 		spi_gpio_off();

 	if (ret) {
 		EXTERR("%s: %s(%d): %d\n", __func__, ext_config->name,
 			ext_config->index, flag);
 	} else {
 		EXTPR("%s: %s(%d): %d\n", __func__, ext_config->name,
 			ext_config->index, flag);
 	}
 	return ret;
 }

 static int lcd_extern_power_on(void)
 {
 	int ret;

 	lcd_extern_pinmux_set(1);
 	ret = lcd_extern_power_ctrl(1);
 	return ret;
 }

 static int lcd_extern_power_off(void)
 {
 	int ret;

 	ret = lcd_extern_power_ctrl(0);
 	lcd_extern_pinmux_set(0);

 	return ret;
 }

 static int lcd_extern_driver_update(struct aml_lcd_extern_driver_s *ext_drv)
 {
 	if (ext_drv == NULL) {
 		EXTERR("%s driver is null\n", LCD_EXTERN_NAME);
 		return -1;
 	}
 	if (ext_drv->config->table_init_loaded == 0) {
 		EXTERR("%s: tablet_init is invalid\n", ext_drv->config->name);
 		return -1;
 	}

 	spi_gpio_cs = ext_drv->common->spi_gpio_cs;
 	spi_gpio_clk = ext_drv->common->spi_gpio_clk;
 	spi_gpio_data = ext_drv->common->spi_gpio_data;

 	if (ext_drv->config->type == LCD_EXTERN_SPI)
 		ext_drv->config->spi_delay_us = 1000 / ext_drv->config->spi_clk_freq;

 	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_default_probe(struct aml_lcd_extern_driver_s *ext_drv)
 {
 	int ret = 0;

 	ext_config = ext_drv->config;
 	ret = lcd_extern_driver_update(ext_drv);

 	if (lcd_debug_print_flag)
 		EXTPR("%s: %d\n", __func__, ret);
 	return ret;
 }
	/*
	* drivers/amlogic/media/vout/lcd/lcd_extern/ext_default.c
	*
	* Copyright (C) 2015 Amlogic, Inc. All rights reserved.
	*
	* 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.
	*
	* You should have received a copy of the GNU General Public License along
	* with this program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	*/

	#include <common.h>
	#include <malloc.h>
	#include <asm/arch/gpio.h>
	#include <fdtdec.h>
	#include <amlogic/media/vout/lcd/aml_lcd.h>
	#include <amlogic/media/vout/lcd/lcd_extern.h>
	#include "lcd_extern.h"
	#include "../lcd_common.h"
	#include "../lcd_reg.h"

	#define LCD_EXTERN_NAME "ext_default"

	static struct lcd_extern_config_s *ext_config;
	static unsigned char spi_gpio_cs = 0xff;
	static unsigned char spi_gpio_clk = 0xff;
	static unsigned char spi_gpio_data = 0xff;

	static void set_lcd_csb(unsigned int v)
	{
	lcd_ext_gpio_set(spi_gpio_cs, v);
	udelay(ext_config->spi_delay_us);
	}

	static void set_lcd_scl(unsigned int v)
	{
	lcd_ext_gpio_set(spi_gpio_clk, v);
	udelay(ext_config->spi_delay_us);
	}

	static void set_lcd_sda(unsigned int v)
	{
	lcd_ext_gpio_set(spi_gpio_data, v);
	udelay(ext_config->spi_delay_us);
	}

	static void spi_gpio_init(void)
	{
	set_lcd_csb(1);
	set_lcd_scl(1);
	set_lcd_sda(1);
	}

	static void spi_gpio_off(void)
	{
	set_lcd_sda(0);
	set_lcd_scl(0);
	set_lcd_csb(0);
	}

	static void spi_write_byte(unsigned char data)
	{
	int i;

	for (i = 0; i < 8; i++) {
	set_lcd_scl(0);
	if (data & 0x80)
	set_lcd_sda(1);
	else
	set_lcd_sda(0);
	data <<= 1;
	set_lcd_scl(1);
	}
	}

	static int lcd_extern_spi_write(unsigned char *buf, int len)
	{
	int i;

	if (len < 2) {
	EXTERR("%s: len %d error\n", __func__, len);
	return -1;
	}

	set_lcd_csb(0);

	for (i = 0; i < len; i++)
	spi_write_byte(buf[i]);

	set_lcd_csb(1);
	set_lcd_scl(1);
	set_lcd_sda(1);
	udelay(ext_config->spi_delay_us);

	return 0;
	}

	static int lcd_extern_reg_read(unsigned char reg, unsigned char *buf)
	{
	int ret = 0;

	return ret;
	}

	static int lcd_extern_reg_write(unsigned char reg, unsigned char value)
	{
	int ret = 0;

	return ret;
	}

	static int lcd_extern_power_cmd_dynamic_size(unsigned char *table, int flag)
	{
	int i = 0, j = 0, max_len = 0, step = 0;
	unsigned char type, cmd_size;
	int delay_ms, ret = 0;

	if (flag)
	max_len = ext_config->table_init_on_cnt;
	else
	max_len = ext_config->table_init_off_cnt;

	switch (ext_config->type) {
	case LCD_EXTERN_I2C:
	while ((i + 1) < max_len) {
	type = table[i];
	if (type == LCD_EXT_CMD_TYPE_END)
	break;
	if (lcd_debug_print_flag) {
	EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n",
	__func__, step, type, table[i+1]);
	}
	cmd_size = table[i+1];
	if (cmd_size == 0)
	goto power_cmd_dynamic_i2c_next;
	if ((i + 2 + cmd_size) > max_len)
	break;

	if (type == LCD_EXT_CMD_TYPE_NONE) {
	/* do nothing */
	} else if (type == LCD_EXT_CMD_TYPE_GPIO) {
	if (cmd_size < 2) {
	EXTERR("step %d: invalid cmd_size %d for GPIO\n",
	step, cmd_size);
	goto power_cmd_dynamic_i2c_next;
	}
	lcd_ext_gpio_set(table[i+2], table[i+3]);
	if (cmd_size > 2) {
	if (table[i+4] > 0)
	mdelay(table[i+4]);
	}
	} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
	delay_ms = 0;
	for (j = 0; j < cmd_size; j++)
	delay_ms += table[i+2+j];
	if (delay_ms > 0)
	mdelay(delay_ms);
	} else if (type == LCD_EXT_CMD_TYPE_CMD) {
	ret = lcd_extern_i2c_write(ext_config->i2c_bus,
	ext_config->i2c_addr,
	&table[i+2], cmd_size);
	} else if (type == LCD_EXT_CMD_TYPE_CMD2) {
	ret = lcd_extern_i2c_write(ext_config->i2c_bus,
	ext_config->i2c_addr2,
	&table[i+2], cmd_size);
	} else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) {
	ret = lcd_extern_i2c_write(ext_config->i2c_bus,
	ext_config->i2c_addr,
	&table[i+2], (cmd_size-1));
	if (table[i+1+cmd_size] > 0)
	mdelay(table[i+1+cmd_size]);
	} else if (type == LCD_EXT_CMD_TYPE_CMD2_DELAY) {
	ret = lcd_extern_i2c_write(ext_config->i2c_bus,
	ext_config->i2c_addr2,
	&table[i+2], (cmd_size - 1));
	if (table[i+1+cmd_size] > 0)
	mdelay(table[i+1+cmd_size]);
	} else {
	EXTERR("%s: %s(%d): type 0x%02x invalid\n",
	__func__, ext_config->name,
	ext_config->index, type);
	}
	power_cmd_dynamic_i2c_next:
	i += (cmd_size + 2);
	step++;
	}
	break;
	case LCD_EXTERN_SPI:
	while ((i + 1) < max_len) {
	type = table[i];
	if (type == LCD_EXT_CMD_TYPE_END)
	break;
	if (lcd_debug_print_flag) {
	EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n",
	__func__, step, type, table[i+1]);
	}
	cmd_size = table[i+1];
	if (cmd_size == 0)
	goto power_cmd_dynamic_spi_next;
	if ((i + 2 + cmd_size) > max_len)
	break;

	if (type == LCD_EXT_CMD_TYPE_NONE) {
	/* do nothing */
	} else if (type == LCD_EXT_CMD_TYPE_GPIO) {
	if (cmd_size < 2) {
	EXTERR("step %d: invalid cmd_size %d for GPIO\n",
	step, cmd_size);
	goto power_cmd_dynamic_spi_next;
	}
	lcd_ext_gpio_set(table[i+2], table[i+3]);
	if (cmd_size > 2) {
	if (table[i+4] > 0)
	mdelay(table[i+4]);
	}
	} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
	delay_ms = 0;
	for (j = 0; j < cmd_size; j++)
	delay_ms += table[i+2+j];
	if (delay_ms > 0)
	mdelay(delay_ms);
	} else if (type == LCD_EXT_CMD_TYPE_CMD) {
	ret = lcd_extern_spi_write(&table[i+2], cmd_size);
	} else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) {
	ret = lcd_extern_spi_write(&table[i+2], (cmd_size-1));
	if (table[i+1+cmd_size] > 0)
	mdelay(table[i+1+cmd_size]);
	} else {
	EXTERR("%s: %s(%d): type 0x%02x invalid\n",
	__func__, ext_config->name,
	ext_config->index, type);
	}
	power_cmd_dynamic_spi_next:
	i += (cmd_size + 2);
	step++;
	}
	break;
	default:
	EXTERR("%s: %s(%d): extern_type %d is not support\n",
	__func__, ext_config->name,
	ext_config->index, ext_config->type);
	break;
	}

	return ret;
	}

	static int lcd_extern_power_cmd_fixed_size(unsigned char *table, int flag)
	{
	int i = 0, j, max_len = 0, step = 0;
	unsigned char type, cmd_size;
	int delay_ms, ret = 0;

	cmd_size = ext_config->cmd_size;
	if (cmd_size < 2) {
	EXTERR("%s: invalid cmd_size %d\n", __func__, cmd_size);
	return -1;
	}

	if (flag)
	max_len = ext_config->table_init_on_cnt;
	else
	max_len = ext_config->table_init_off_cnt;

	switch (ext_config->type) {
	case LCD_EXTERN_I2C:
	while ((i + cmd_size) <= max_len) {
	type = table[i];
	if (type == LCD_EXT_CMD_TYPE_END)
	break;
	if (lcd_debug_print_flag) {
	EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n",
	__func__, step, type, cmd_size);
	}
	if (type == LCD_EXT_CMD_TYPE_NONE) {
	/* do nothing */
	} else if (type == LCD_EXT_CMD_TYPE_GPIO) {
	lcd_ext_gpio_set(table[i+1], table[i+2]);
	if (cmd_size > 3) {
	if (table[i+3] > 0)
	mdelay(table[i+3]);
	}
	} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
	delay_ms = 0;
	for (j = 0; j < (cmd_size - 1); j++)
	delay_ms += table[i+1+j];
	if (delay_ms > 0)
	mdelay(delay_ms);
	} else if (type == LCD_EXT_CMD_TYPE_CMD) {
	ret = lcd_extern_i2c_write(ext_config->i2c_bus,
	ext_config->i2c_addr,
	&table[i+1], (cmd_size-1));
	} else if (type == LCD_EXT_CMD_TYPE_CMD2) {
	ret = lcd_extern_i2c_write(ext_config->i2c_bus,
	ext_config->i2c_addr2,
	&table[i+1], (cmd_size-1));
	} else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) {
	ret = lcd_extern_i2c_write(ext_config->i2c_bus,
	ext_config->i2c_addr,
	&table[i+1], (cmd_size-2));
	if (table[i+cmd_size-1] > 0)
	mdelay(table[i+cmd_size-1]);
	} else if (type == LCD_EXT_CMD_TYPE_CMD2_DELAY) {
	ret = lcd_extern_i2c_write(ext_config->i2c_bus,
	ext_config->i2c_addr2,
	&table[i+1], (cmd_size-2));
	if (table[i+cmd_size-1] > 0)
	mdelay(table[i+cmd_size-1]);
	} else {
	EXTERR("%s: %s(%d): type 0x%02x invalid\n",
	__func__, ext_config->name,
	ext_config->index, type);
	}
	i += cmd_size;
	step++;
	}
	break;
	case LCD_EXTERN_SPI:
	while ((i + cmd_size) <= max_len) {
	type = table[i];
	if (type == LCD_EXT_CMD_TYPE_END)
	break;
	if (lcd_debug_print_flag) {
	EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n",
	__func__, step, type, cmd_size);
	}
	if (type == LCD_EXT_CMD_TYPE_NONE) {
	/* do nothing */
	} else if (type == LCD_EXT_CMD_TYPE_GPIO) {
	lcd_ext_gpio_set(table[i+1], table[i+2]);
	if (cmd_size > 3) {
	if (table[i+3] > 0)
	mdelay(table[i+3]);
	}
	} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
	delay_ms = 0;
	for (j = 0; j < (cmd_size - 1); j++)
	delay_ms += table[i+1+j];
	if (delay_ms > 0)
	mdelay(delay_ms);
	} else if (type == LCD_EXT_CMD_TYPE_CMD) {
	ret = lcd_extern_spi_write(&table[i+1], (cmd_size-1));
	} else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) {
	ret = lcd_extern_spi_write(&table[i+1], (cmd_size-2));
	if (table[i+cmd_size-1] > 0)
	mdelay(table[i+cmd_size-1]);
	} else {
	EXTERR("%s: %s(%d): type 0x%02x invalid\n",
	__func__, ext_config->name,
	ext_config->index, type);
	}
	i += cmd_size;
	step++;
	}
	break;
	default:
	EXTERR("%s: %s(%d): extern_type %d is not support\n",
	__func__, ext_config->name,
	ext_config->index, ext_config->type);
	break;
	}

	return ret;
	}

	static int lcd_extern_power_ctrl(int flag)
	{
	unsigned char *table;
	int cmd_size;
	int ret = 0;

	/* step 1: power prepare */
	if (ext_config->type == LCD_EXTERN_SPI)
	spi_gpio_init();

	/* step 2: power cmd */
	cmd_size = ext_config->cmd_size;
	if (flag)
	table = ext_config->table_init_on;
	else
	table = ext_config->table_init_off;
	if (cmd_size < 1) {
	EXTERR("%s: cmd_size %d is invalid\n", __func__, cmd_size);
	ret = -1;
	goto power_ctrl_next;
	}
	if (table == NULL) {
	EXTERR("%s: init_table %d is NULL\n", __func__, flag);
	ret = -1;
	goto power_ctrl_next;
	}

	if (cmd_size == LCD_EXT_CMD_SIZE_DYNAMIC)
	ret = lcd_extern_power_cmd_dynamic_size(table, flag);
	else
	ret = lcd_extern_power_cmd_fixed_size(table, flag);

	power_ctrl_next:
	/* step 3: power finish */
	if (ext_config->type == LCD_EXTERN_SPI)
	spi_gpio_off();

	if (ret) {
	EXTERR("%s: %s(%d): %d\n", __func__, ext_config->name,
	ext_config->index, flag);
	} else {
	EXTPR("%s: %s(%d): %d\n", __func__, ext_config->name,
	ext_config->index, flag);
	}
	return ret;
	}

	static int lcd_extern_power_on(void)
	{
	int ret;

	lcd_extern_pinmux_set(1);
	ret = lcd_extern_power_ctrl(1);
	return ret;
	}

	static int lcd_extern_power_off(void)
	{
	int ret;

	ret = lcd_extern_power_ctrl(0);
	lcd_extern_pinmux_set(0);

	return ret;
	}

	static int lcd_extern_driver_update(struct aml_lcd_extern_driver_s *ext_drv)
	{
	if (ext_drv == NULL) {
	EXTERR("%s driver is null\n", LCD_EXTERN_NAME);
	return -1;
	}
	if (ext_drv->config->table_init_loaded == 0) {
	EXTERR("%s: tablet_init is invalid\n", ext_drv->config->name);
	return -1;
	}

	spi_gpio_cs = ext_drv->common->spi_gpio_cs;
	spi_gpio_clk = ext_drv->common->spi_gpio_clk;
	spi_gpio_data = ext_drv->common->spi_gpio_data;

	if (ext_drv->config->type == LCD_EXTERN_SPI)
	ext_drv->config->spi_delay_us = 1000 / ext_drv->config->spi_clk_freq;

	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_default_probe(struct aml_lcd_extern_driver_s *ext_drv)
	{
	int ret = 0;

	ext_config = ext_drv->config;
	ret = lcd_extern_driver_update(ext_drv);

	if (lcd_debug_print_flag)
	EXTPR("%s: %d\n", __func__, ret);
	return ret;
	}