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/*
* LP855x Backlight Driver
*
* Copyright (C) 2011 Texas Instruments
*
* 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.
*
*/
#ifndef _LP855X_H
#define _LP855X_H
extern struct lp855x *lpdata;
int lp855x_ext_write_byte(u8 reg, u8 data);
int lp855x_ext_read_byte(u8 reg);
#define BL_CTL_SHFT (0)
#define BRT_MODE_SHFT (1)
#define BRT_MODE_MASK (0x06)
/* Enable backlight. Only valid when BRT_MODE=10(I2C only) */
#define ENABLE_BL (1)
#define DISABLE_BL (0)
#define I2C_CONFIG(id) id ## _I2C_CONFIG
#define PWM_CONFIG(id) id ## _PWM_CONFIG
/* DEVICE CONTROL register - LP8550 */
#define LP8550_PWM_CONFIG (LP8550_PWM_ONLY << BRT_MODE_SHFT)
#define LP8550_I2C_CONFIG ((ENABLE_BL << BL_CTL_SHFT) | \
(LP8550_I2C_ONLY << BRT_MODE_SHFT))
/* DEVICE CONTROL register - LP8551 */
#define LP8551_PWM_CONFIG LP8550_PWM_CONFIG
#define LP8551_I2C_CONFIG LP8550_I2C_CONFIG
/* DEVICE CONTROL register - LP8552 */
#define LP8552_PWM_CONFIG LP8550_PWM_CONFIG
#define LP8552_I2C_CONFIG LP8550_I2C_CONFIG
/* DEVICE CONTROL register - LP8553 */
#define LP8553_PWM_CONFIG LP8550_PWM_CONFIG
#define LP8553_I2C_CONFIG LP8550_I2C_CONFIG
/* DEVICE CONTROL register - LP8556 */
#define LP8556_PWM_CONFIG (LP8556_PWM_ONLY << BRT_MODE_SHFT)
#define LP8556_COMB1_CONFIG (LP8556_COMBINED1 << BRT_MODE_SHFT)
#define LP8556_I2C_CONFIG ((ENABLE_BL << BL_CTL_SHFT) | \
(LP8556_I2C_ONLY << BRT_MODE_SHFT))
#define LP8556_COMB2_CONFIG (LP8556_COMBINED2 << BRT_MODE_SHFT)
#define LP8556_FAST_CONFIG BIT(7) /* use it if EPROMs should be maintained
when exiting the low power mode */
#define LP8556_5LEDSTR 0x1F /* 5 led string definition for ffrd8 and bytcr-rvp boards.*/
#define LP8556_LEDSTREN 0x16
#define LP8556_CFG98 0x98
#define LP8556_CFG9E 0x9E
#define LP8556_CFG0 0xA0
#define LP8556_CFG1 0xA1
#define LP8556_CFG2 0xA2
#define LP8556_CFG3 0xA3
#define LP8556_CFG4 0xA4
#define LP8556_CFG5 0xA5
#define LP8556_PWM_DRECT_EN 0x80
#define LP8556_PWM_DRECT_DIS 0x00
#define LP8556_PS_MODE_6P6D 0x00
#define LP8556_PS_MODE_5P5D 0x10
#define LP8556_PS_MODE_4P4D 0x20
#define LP8556_PS_MODE_3P3D 0x30
#define LP8556_PS_MODE_2P2D 0x40
#define LP8556_PS_MODE_3P6D 0x50
#define LP8556_PS_MODE_2P6D 0x60
#define LP8556_PS_MODE_1P6D 0x70
#define LP8556_PWM_FREQ_4808HZ 0x00
#define LP8556_PWM_FREQ_6010HZ 0x01
#define LP8556_PWM_FREQ_7212HZ 0x02
#define LP8556_PWM_FREQ_8414HZ 0x03
#define LP8556_PWM_FREQ_9616HZ 0x04
#define LP8556_PWM_FREQ_12020HZ 0x05
#define LP8556_PWM_FREQ_13222HZ 0x06
#define LP8556_PWM_FREQ_14424HZ 0x07
#define LP8556_PWM_FREQ_15626HZ 0x08
#define LP8556_PWM_FREQ_16828HZ 0x09
#define LP8556_PWM_FREQ_18030HZ 0x0A
#define LP8556_PWM_FREQ_19232HZ 0x0B
#define LP8556_PWM_FREQ_24040HZ 0x0C
#define LP8556_PWM_FREQ_28848HZ 0x0D
#define LP8556_PWM_FREQ_33656HZ 0x0E
#define LP8556_PWM_FREQ_38464HZ 0x0F
#define LP8556_CFG6 0xA6
#define LP8556_CFG7 0xA7
#define LP8556_RSRVD_76 0xC0
#define LP8556_DRV3_EN 0x20
#define LP8556_DRV3_DIS 0x00
#define LP8556_DRV2_EN 0x10
#define LP8556_DRV2_DIS 0x00
#define LP8556_RSRVD_32 0x0C
#define LP8556_IBOOST_LIM_0_9A_1_6A 0x00
#define LP8556_IBOOST_LIM_1_2A_2_1A 0x01
#define LP8556_IBOOST_LIM_1_5A_2_6A 0x02
#define LP8556_IBOOST_LIM_1_8A_NA 0x03
#define LP8556_CFG8 0xA8
#define LP8556_CFG9 0xA9
#define LP8556_VBOOST_MAX_NA_21V 0x40
#define LP8556_VBOOST_MAX_NA_25V 0x60
#define LP8556_VBOOST_MAX_21V_30V 0x80
#define LP8556_VBOOST_MAX_25V_34_5V 0xA0
#define LP8556_VBOOST_MAX_30V_39V 0xC0
#define LP8556_VBOOST_MAX_34V_43V 0xE0
#define LP8556_JUMP_EN 0x10
#define LP8556_JUMP_DIS 0x00
#define LP8556_JMP_TSHOLD_10P 0x00
#define LP8556_JMP_TSHOLD_30P 0x04
#define LP8556_JMP_TSHOLD_50P 0x08
#define LP8556_JMP_TSHOLD_70P 0x0C
#define LP8556_JMP_VOLT_0_5V 0x00
#define LP8556_JMP_VOLT_1V 0x01
#define LP8556_JMP_VOLT_2V 0x02
#define LP8556_JMP_VOLT_4V 0x03
#define LP8556_CFGA 0xAA
#define LP8556_CFGB 0xAB
#define LP8556_CFGC 0xAC
#define LP8556_CFGD 0xAD
#define LP8556_CFGE 0xAE
#define LP8556_CFGF 0xAF
/* CONFIG register - LP8557 */
#define LP8557_PWM_STANDBY BIT(7)
#define LP8557_PWM_FILTER BIT(6)
#define LP8557_RELOAD_EPROM BIT(3) /* use it if EPROMs should be reset
when the backlight turns on */
#define LP8557_OFF_OPENLEDS BIT(2)
#define LP8557_PWM_CONFIG LP8557_PWM_ONLY
#define LP8557_I2C_CONFIG LP8557_I2C_ONLY
#define LP8557_COMB1_CONFIG LP8557_COMBINED1
#define LP8557_COMB2_CONFIG LP8557_COMBINED2
enum lp855x_chip_id {
LP8550,
LP8551,
LP8552,
LP8553,
LP8556,
LP8557,
};
enum lp8550_brighntess_source {
LP8550_PWM_ONLY,
LP8550_I2C_ONLY = 2,
};
enum lp8551_brighntess_source {
LP8551_PWM_ONLY = LP8550_PWM_ONLY,
LP8551_I2C_ONLY = LP8550_I2C_ONLY,
};
enum lp8552_brighntess_source {
LP8552_PWM_ONLY = LP8550_PWM_ONLY,
LP8552_I2C_ONLY = LP8550_I2C_ONLY,
};
enum lp8553_brighntess_source {
LP8553_PWM_ONLY = LP8550_PWM_ONLY,
LP8553_I2C_ONLY = LP8550_I2C_ONLY,
};
enum lp8556_brightness_source {
LP8556_PWM_ONLY,
LP8556_COMBINED1, /* pwm + i2c before the shaper block */
LP8556_I2C_ONLY,
LP8556_COMBINED2, /* pwm + i2c after the shaper block */
};
enum lp8557_brightness_source {
LP8557_PWM_ONLY,
LP8557_I2C_ONLY,
LP8557_COMBINED1, /* pwm + i2c after the shaper block */
LP8557_COMBINED2, /* pwm + i2c before the shaper block */
};
struct lp855x_rom_data {
u8 addr;
u8 val;
};
/**
* struct lp855x_platform_data
* @name : Backlight driver name. If it is not defined, default name is set.
* @device_control : value of DEVICE CONTROL register
* @initial_brightness : initial value of backlight brightness
* @period_ns : platform specific pwm period value. unit is nano.
Only valid when mode is PWM_BASED.
* @size_program : total size of lp855x_rom_data
* @rom_data : list of new eeprom/eprom registers
*/
struct lp855x_platform_data {
const char *name;
u8 device_control;
u8 initial_brightness;
unsigned int period_ns;
int size_program;
struct lp855x_rom_data *rom_data;
};
#endif
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