| /* |
| * drivers/display/lcd/lcd_extern/i2c_RT6947.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 |
| #ifdef CONFIG_SYS_I2C_AML |
| #include <aml_i2c.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_EXT_I2C_PORT_INIT /* no need init i2c port here */ |
| //#define LCD_EXT_DEBUG_INFO |
| |
| #ifdef CONFIG_SYS_I2C_AML |
| #define LCD_EXTERN_INDEX 1 |
| #define LCD_EXTERN_NAME "i2c_RT6947" |
| #define LCD_EXTERN_TYPE LCD_EXTERN_I2C |
| |
| #define LCD_EXTERN_I2C_ADDR (0x66 >> 1) //7bit address |
| #define LCD_EXTERN_I2C_BUS AML_I2C_MASTER_D |
| |
| //#define GAMMA_EEPROM_WRITE |
| |
| #ifdef LCD_EXT_I2C_PORT_INIT |
| static unsigned aml_i2c_bus_tmp; |
| #endif |
| static struct lcd_extern_config_s *ext_config; |
| |
| static unsigned char gamma_init[] = { |
| 0x00, 90, |
| 0x00, |
| 0xA2, 0xD0, 0x80, 0x00, 0x10, 0x10, 0x59, 0x19, 0x4B, 0x0B, |
| 0x3A, 0x13, 0x27, 0x2F, 0xC2, 0xC9, 0x29, 0xD2, 0x7A, 0x20, |
| 0xA1, 0xC0, 0x15, 0x01, 0x36, 0x10, 0x10, 0xCB, 0x0A, 0x10, |
| 0x2C, 0x1C, 0xA0, 0xFF, 0x00, 0x00, 0x0B, 0x02, 0x00, 0x00, |
| 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x10, |
| 0x80, 0x00, 0x60, 0x00, 0x00, 0x00, 0x0D, 0x0D, 0x20, 0x02, |
| 0x00, 0x20, 0x02, 0x00, 0x20, 0x02, 0x00, 0x20, 0x02, 0x00, |
| 0x20, 0x02, 0x00, 0x20, 0x02, 0x00, 0x20, 0x02, 0x00, 0x20, |
| 0x00, 0xFF, 0x00, 0x00, 0x0B, 0x02, 0x00, 0x00, |
| 0x00, /* delay */ |
| 0xff, 0, /* ending */ |
| }; |
| |
| #ifdef GAMMA_EEPROM_WRITE |
| static unsigned char mtp_en[] = {0x64,0x01}; |
| static unsigned char eeprom_wr[] = {0xFF,0x80}; |
| #endif |
| |
| static int lcd_extern_i2c_write(unsigned int i2caddr, unsigned char *buff, unsigned int len) |
| { |
| int ret = 0; |
| #ifdef LCD_EXT_DEBUG_INFO |
| int i; |
| #endif |
| struct i2c_msg msg; |
| |
| msg.addr = i2caddr; |
| msg.flags = 0; |
| msg.len = len; |
| msg.buf = buff; |
| |
| #ifdef LCD_EXT_DEBUG_INFO |
| printf("%s:", __func__); |
| for (i = 0; i < len; i++) { |
| printf(" 0x%02x", buff[i]); |
| } |
| printf(" [addr 0x%02x]\n", i2caddr); |
| #endif |
| |
| ret = aml_i2c_xfer(&msg, 1); |
| //ret = aml_i2c_xfer_slow(&msg, 1); |
| if (ret < 0) |
| EXTERR("i2c write failed [addr 0x%02x]\n", i2caddr); |
| |
| return ret; |
| } |
| |
| #ifdef GAMMA_EEPROM_WRITE |
| static int lcd_extern_i2c_read(unsigned i2caddr, unsigned char reg ,unsigned char *buff, unsigned len) |
| { |
| int ret = 0; |
| struct i2c_msg msg[] = { |
| { |
| .addr = i2caddr, |
| .flags = 0, |
| .len = 1, |
| .buf = ®, |
| }, |
| { |
| .addr = i2caddr, |
| .flags = I2C_M_RD, |
| .len = len, |
| .buf = buff, |
| } |
| }; |
| |
| ret = aml_i2c_xfer(msg, 2); |
| if (ret < 0) |
| EXTERR("i2c read failed [addr 0x%02x]\n", i2caddr); |
| |
| return ret; |
| } |
| |
| #endif |
| |
| static int lcd_extern_power_cmd_dynamic_size(unsigned char *init_table) |
| { |
| int i = 0, step = 0; |
| unsigned char type, cmd_size; |
| int ret = 0; |
| int max_len = LCD_EXTERN_INIT_ON_MAX; |
| |
| #ifdef CONFIG_SYS_I2C_AML |
| while (i <= max_len) { |
| type = init_table[i]; |
| if (type == LCD_EXTERN_INIT_END) |
| break; |
| if (lcd_debug_print_flag) { |
| EXTPR("%s: step %d: type=0x%02x, cmd_size=%d\n", |
| __func__, step, init_table[i], init_table[i+1]); |
| } |
| cmd_size = init_table[i+1]; |
| if (type == LCD_EXTERN_INIT_NONE) { |
| if (cmd_size < 1) { |
| EXTERR("step %d: invalid cmd_size %d\n", step, cmd_size); |
| i += (cmd_size + 2); |
| step++; |
| continue; |
| } |
| /* do nothing, only for delay */ |
| if (init_table[i+2] > 0) |
| mdelay(init_table[i+2]); |
| } else if (type == LCD_EXTERN_INIT_GPIO) { |
| if (cmd_size < 3) { |
| EXTERR("step %d: invalid cmd_size %d\n", step, cmd_size); |
| i += (cmd_size + 2); |
| step++; |
| continue; |
| } |
| aml_lcd_extern_set_gpio(init_table[i+2], init_table[i+3]); |
| if (init_table[i+4] > 0) |
| mdelay(init_table[i+3]); |
| } else if (type == LCD_EXTERN_INIT_CMD) { |
| ret = lcd_extern_i2c_write(ext_config->i2c_addr, |
| &init_table[i+2], (cmd_size-1)); |
| if (init_table[i+1+cmd_size] > 0) |
| mdelay(init_table[i+1+cmd_size]); |
| } else if (type == LCD_EXTERN_INIT_CMD2) { |
| ret = lcd_extern_i2c_write(ext_config->i2c_addr2, |
| &init_table[i+2], (cmd_size - 1)); |
| if (init_table[i+1+cmd_size] > 0) |
| mdelay(init_table[i+1+cmd_size]); |
| } else { |
| EXTERR("%s(%d: %s): type %d invalid\n", |
| __func__, ext_config->index, |
| ext_config->name, ext_config->type); |
| } |
| i += (cmd_size + 2); |
| step++; |
| } |
| #endif |
| |
| return ret; |
| } |
| |
| static int lcd_extern_power_cmd_fixed_size(unsigned char *init_table) |
| { |
| int i = 0, step = 0; |
| unsigned char type, cmd_size; |
| int ret = 0; |
| int max_len = LCD_EXTERN_INIT_ON_MAX; |
| |
| cmd_size = ext_config->cmd_size; |
| #ifdef CONFIG_SYS_I2C_AML |
| while (i <= max_len) { |
| type = init_table[i]; |
| if (type == LCD_EXTERN_INIT_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_EXTERN_INIT_NONE) { |
| /* do nothing, only for delay */ |
| } else if (type == LCD_EXTERN_INIT_GPIO) { |
| aml_lcd_extern_set_gpio(init_table[i+1], init_table[i+2]); |
| } else if (type == LCD_EXTERN_INIT_CMD) { |
| ret = lcd_extern_i2c_write(ext_config->i2c_addr, |
| &init_table[i+1], (cmd_size-2)); |
| } else if (type == LCD_EXTERN_INIT_CMD2) { |
| ret = lcd_extern_i2c_write(ext_config->i2c_addr2, |
| &init_table[i+1], (cmd_size-2)); |
| } else { |
| EXTERR("%s(%d: %s): type %d invalid\n", |
| __func__, ext_config->index, |
| ext_config->name, ext_config->type); |
| } |
| if (init_table[i+cmd_size-1] > 0) |
| mdelay(init_table[i+cmd_size-1]); |
| i += cmd_size; |
| step++; |
| } |
| #endif |
| |
| return ret; |
| } |
| |
| static int lcd_extern_power_cmd(unsigned char *init_table) |
| { |
| int cmd_size; |
| int ret = 0; |
| |
| cmd_size = ext_config->cmd_size; |
| if (cmd_size < 1) { |
| EXTERR("%s: cmd_size %d is invalid\n", __func__, cmd_size); |
| return -1; |
| } |
| if (init_table == NULL) |
| return -1; |
| |
| if (cmd_size == LCD_EXTERN_CMD_SIZE_DYNAMIC) |
| ret = lcd_extern_power_cmd_dynamic_size(init_table); |
| else |
| ret = lcd_extern_power_cmd_fixed_size(init_table); |
| |
| return ret; |
| } |
| |
| #ifdef LCD_EXT_I2C_PORT_INIT |
| static int lcd_extern_change_i2c_bus(unsigned aml_i2c_bus) |
| { |
| int ret = 0; |
| extern struct aml_i2c_platform g_aml_i2c_plat; |
| |
| if (aml_i2c_bus == LCD_EXTERN_I2C_BUS_INVALID) { |
| EXTERR("%s: invalid i2c_bus\n", __func__); |
| return -1; |
| } |
| g_aml_i2c_plat.master_no = aml_i2c_bus; |
| ret = aml_i2c_init(); |
| |
| return ret; |
| } |
| #endif |
| |
| #ifdef GAMMA_EEPROM_WRITE |
| 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, not enough memory\n", LCD_EXTERN_NAME); |
| ret = lcd_extern_power_cmd(ext_config->table_init_on); |
| return ret; |
| } |
| memset(chk_table, 0, len); |
| |
| ret = lcd_extern_i2c_read(ext_config->i2c_addr, 0x00, chk_table, len); |
| if (ret == 0) { |
| for (i = 0; i < len; i++) { |
| if (chk_table[i] != ext_config->table_init_on[i+3]) |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |
| #endif |
| |
| static int lcd_extern_power_on(void) |
| { |
| int ret = 0; |
| #ifdef GAMMA_EEPROM_WRITE |
| int len = ext_config->table_init_on[1] - 2; |
| #endif |
| |
| #ifdef LCD_EXT_I2C_PORT_INIT |
| extern struct aml_i2c_platform g_aml_i2c_plat; |
| #endif |
| |
| lcd_extern_pinmux_set(1); |
| #ifdef LCD_EXT_I2C_PORT_INIT |
| aml_i2c_bus_tmp = g_aml_i2c_plat.master_no; |
| lcd_extern_change_i2c_bus(ext_config->i2c_bus); |
| mdelay(10); |
| #endif |
| |
| #ifdef GAMMA_EEPROM_WRITE |
| /* check gamma is init or not */ |
| ret = lcd_extern_init_check(len); |
| if (ret) { |
| EXTPR("RT6947: need init gamma and mtp write\n"); |
| lcd_extern_power_cmd(ext_config->table_init_on); |
| /* enable mtp */ |
| len = sizeof(mtp_en) / sizeof(unsigned char); |
| lcd_extern_i2c_write(ext_config->i2c_addr, mtp_en, len); |
| /* write eeprom */ |
| len = sizeof(eeprom_wr) / sizeof(unsigned char); |
| lcd_extern_i2c_write(ext_config->i2c_addr, eeprom_wr, len); |
| } |
| #else |
| lcd_extern_power_cmd(ext_config->table_init_on); |
| #endif |
| |
| #ifdef LCD_EXT_I2C_PORT_INIT |
| lcd_extern_change_i2c_bus(aml_i2c_bus_tmp); |
| #endif |
| |
| EXTPR("%s\n", __func__); |
| return ret; |
| } |
| |
| static int lcd_extern_power_off(void) |
| { |
| int ret = 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->type == LCD_EXTERN_MAX) { //default for no dt |
| ext_drv->config->index = LCD_EXTERN_INDEX; |
| ext_drv->config->type = LCD_EXTERN_TYPE; |
| strcpy(ext_drv->config->name, LCD_EXTERN_NAME); |
| ext_drv->config->cmd_size = LCD_EXTERN_CMD_SIZE_DYNAMIC; |
| ext_drv->config->i2c_addr = LCD_EXTERN_I2C_ADDR; |
| ext_drv->config->i2c_bus = LCD_EXTERN_I2C_BUS; |
| } |
| if (ext_drv->config->table_init_loaded == 0) { |
| ext_drv->config->table_init_on = gamma_init; |
| ext_drv->config->cmd_size = LCD_EXTERN_CMD_SIZE_DYNAMIC; |
| } |
| |
| ext_drv->power_on = lcd_extern_power_on; |
| ext_drv->power_off = lcd_extern_power_off; |
| |
| return 0; |
| } |
| |
| int aml_lcd_extern_i2c_RT6947_get_default_index(void) |
| { |
| return LCD_EXTERN_INDEX; |
| } |
| |
| int aml_lcd_extern_i2c_RT6947_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; |
| } |
| #endif |
| |