| /* |
| * drivers/display/lcd/lcd_extern/i2c_CS602.c |
| * |
| * 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 named License, |
| * or 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 <common.h> |
| #include <malloc.h> |
| #include <asm/arch/gpio.h> |
| #ifdef CONFIG_OF_LIBFDT |
| #include <libfdt.h> |
| #endif |
| #include <amlogic/aml_lcd.h> |
| #include <amlogic/aml_lcd_extern.h> |
| #include "lcd_extern.h" |
| #include "../aml_lcd_common.h" |
| #include "../aml_lcd_reg.h" |
| |
| #define LCD_EXTERN_NAME "i2c_CS602" |
| #define LCD_EXTERN_TYPE LCD_EXTERN_I2C |
| #define LCD_EXTERN_I2C_ADDR (0x66 >> 1) /* 7bit address */ |
| |
| static struct lcd_extern_config_s *ext_config; |
| |
| #define LCD_EXTERN_CMD_SIZE LCD_EXT_CMD_SIZE_DYNAMIC |
| |
| 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 *buf, unsigned int len) |
| { |
| int ret = 0; |
| |
| if (buf == NULL) { |
| EXTERR("%s: buf is null\n", __func__); |
| return -1; |
| } |
| |
| if (!len) { |
| EXTERR("%s: invalid len\n", __func__); |
| return -1; |
| } |
| |
| ret = aml_lcd_extern_i2c_write(ext_config->i2c_bus, |
| ext_config->i2c_addr, |
| buf, len); |
| if (ret) |
| EXTERR("%s: faild\n", __func__); |
| |
| return ret; |
| } |
| |
| static int lcd_extern_init_check(int len) |
| { |
| int ret = 0; |
| unsigned char *chk_table; |
| int i; |
| |
| chk_table = (unsigned char *)malloc((sizeof(unsigned char) * len)); |
| |
| if (chk_table == NULL) { |
| EXTERR("%s: failed to alloc chk_table, no enough memory\n", |
| __func__); |
| return ret; |
| } |
| |
| memset(chk_table, 0, len); |
| ret = aml_lcd_extern_i2c_read(ext_config->i2c_bus, |
| ext_config->i2c_addr, |
| chk_table, len); |
| if (!ret) { |
| for (i = 0; i < len; i++) { |
| if (chk_table[i] != ext_config->table_init_on[i + 3]) |
| return -1; |
| } |
| } |
| |
| 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; |
| |
| 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_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_next; |
| } |
| aml_lcd_extern_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_reg_write(&table[i+2], cmd_size); |
| } else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) { |
| ret = lcd_extern_reg_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_next: |
| i += (cmd_size + 2); |
| step++; |
| } |
| |
| return ret; |
| } |
| |
| static int lcd_extern_power_cmd_fixed_size(unsigned char *table, int flag) |
| { |
| int i = 0, j, max_len, 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; |
| |
| 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) { |
| aml_lcd_extern_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_reg_write(&table[i+1], (cmd_size-1)); |
| } else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) { |
| ret = lcd_extern_reg_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: pwoer_type 0x%02x is invalid\n", |
| __func__, ext_config->name, |
| ext_config->index, type); |
| } |
| i += cmd_size; |
| step++; |
| } |
| |
| return ret; |
| } |
| |
| static int lcd_extern_power_ctrl(int flag) |
| { |
| unsigned char *table; |
| unsigned char cmd_size; |
| unsigned char check_data; |
| unsigned char check_len = 1; |
| int ret = 0; |
| int i = 0; |
| |
| /* step 1: power prepare */ |
| #ifdef LCD_EXT_I2C_PORT_INIT |
| aml_lcd_extern_i2c_bus_change(ext_config->i2c_bus); |
| #endif |
| |
| /* 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; |
| } |
| |
| ret = lcd_extern_init_check(cmd_size); |
| if (!ret) { |
| 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); |
| } |
| |
| for (i = 0; i < 10; i++) { |
| ret = aml_lcd_extern_i2c_read(ext_config->i2c_bus, |
| ext_config->i2c_addr, |
| &check_data, check_len); |
| if (!((ret >> 6) & 0x1)) { |
| 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); |
| } else |
| break; |
| } |
| |
| power_ctrl_next: |
| /* step 3: power finish */ |
| #ifdef LCD_EXT_I2C_PORT_INIT |
| aml_lcd_extern_i2c_bus_recovery(); |
| #endif |
| |
| 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; |
| |
| aml_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); |
| aml_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; |
| } |
| |
| 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 aml_lcd_extern_i2c_CS602_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; |
| } |
| |