include/linux/platform_data/lp855x.h

   1 /*
   2  * LP855x Backlight Driver
   3  *
   4  *                      Copyright (C) 2011 Texas Instruments
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  */
  11
  12 #ifndef _LP855X_H
  13 #define _LP855X_H
  14
  15 #define BL_CTL_SHFT     (0)
  16 #define BRT_MODE_SHFT   (1)
  17 #define BRT_MODE_MASK   (0x06)
  18
  19 /* Enable backlight. Only valid when BRT_MODE=10(I2C only) */
  20 #define ENABLE_BL       (1)
  21 #define DISABLE_BL      (0)
  22
  23 #define I2C_CONFIG(id)  id ## _I2C_CONFIG
  24 #define PWM_CONFIG(id)  id ## _PWM_CONFIG
  25
  26 /* DEVICE CONTROL register - LP8550 */
  27 #define LP8550_PWM_CONFIG       (LP8550_PWM_ONLY << BRT_MODE_SHFT)
  28 #define LP8550_I2C_CONFIG       ((ENABLE_BL << BL_CTL_SHFT) | \
  29                                 (LP8550_I2C_ONLY << BRT_MODE_SHFT))
  30
  31 /* DEVICE CONTROL register - LP8551 */
  32 #define LP8551_PWM_CONFIG       LP8550_PWM_CONFIG
  33 #define LP8551_I2C_CONFIG       LP8550_I2C_CONFIG
  34
  35 /* DEVICE CONTROL register - LP8552 */
  36 #define LP8552_PWM_CONFIG       LP8550_PWM_CONFIG
  37 #define LP8552_I2C_CONFIG       LP8550_I2C_CONFIG
  38
  39 /* DEVICE CONTROL register - LP8553 */
  40 #define LP8553_PWM_CONFIG       LP8550_PWM_CONFIG
  41 #define LP8553_I2C_CONFIG       LP8550_I2C_CONFIG
  42
  43 /* CONFIG register - LP8555 */
  44 #define LP8555_PWM_STANDBY      BIT(7)
  45 #define LP8555_PWM_FILTER       BIT(6)
  46 #define LP8555_RELOAD_EPROM     BIT(3)  /* use it if EPROMs should be reset
  47                                            when the backlight turns on */
  48 #define LP8555_OFF_OPENLEDS     BIT(2)
  49 #define LP8555_PWM_CONFIG       LP8555_PWM_ONLY
  50 #define LP8555_I2C_CONFIG       LP8555_I2C_ONLY
  51 #define LP8555_COMB1_CONFIG     LP8555_COMBINED1
  52 #define LP8555_COMB2_CONFIG     LP8555_COMBINED2
  53
  54 /* DEVICE CONTROL register - LP8556 */
  55 #define LP8556_PWM_CONFIG       (LP8556_PWM_ONLY << BRT_MODE_SHFT)
  56 #define LP8556_COMB1_CONFIG     (LP8556_COMBINED1 << BRT_MODE_SHFT)
  57 #define LP8556_I2C_CONFIG       ((ENABLE_BL << BL_CTL_SHFT) | \
  58                                 (LP8556_I2C_ONLY << BRT_MODE_SHFT))
  59 #define LP8556_COMB2_CONFIG     (LP8556_COMBINED2 << BRT_MODE_SHFT)
  60 #define LP8556_FAST_CONFIG      BIT(7) /* use it if EPROMs should be maintained
  61                                           when exiting the low power mode */
  62
  63 /* CONFIG register - LP8557 */
  64 #define LP8557_PWM_STANDBY      BIT(7)
  65 #define LP8557_PWM_FILTER       BIT(6)
  66 #define LP8557_RELOAD_EPROM     BIT(3)  /* use it if EPROMs should be reset
  67                                            when the backlight turns on */
  68 #define LP8557_OFF_OPENLEDS     BIT(2)
  69 #define LP8557_PWM_CONFIG       LP8557_PWM_ONLY
  70 #define LP8557_I2C_CONFIG       LP8557_I2C_ONLY
  71 #define LP8557_COMB1_CONFIG     LP8557_COMBINED1
  72 #define LP8557_COMB2_CONFIG     LP8557_COMBINED2
  73
  74 enum lp855x_chip_id {
  75         LP8550,
  76         LP8551,
  77         LP8552,
  78         LP8553,
  79         LP8555,
  80         LP8556,
  81         LP8557,
  82 };
  83
  84 enum lp8550_brighntess_source {
  85         LP8550_PWM_ONLY,
  86         LP8550_I2C_ONLY = 2,
  87 };
  88
  89 enum lp8551_brighntess_source {
  90         LP8551_PWM_ONLY = LP8550_PWM_ONLY,
  91         LP8551_I2C_ONLY = LP8550_I2C_ONLY,
  92 };
  93
  94 enum lp8552_brighntess_source {
  95         LP8552_PWM_ONLY = LP8550_PWM_ONLY,
  96         LP8552_I2C_ONLY = LP8550_I2C_ONLY,
  97 };
  98
  99 enum lp8553_brighntess_source {
 100         LP8553_PWM_ONLY = LP8550_PWM_ONLY,
 101         LP8553_I2C_ONLY = LP8550_I2C_ONLY,
 102 };
 103
 104 enum lp8555_brightness_source {
 105         LP8555_PWM_ONLY,
 106         LP8555_I2C_ONLY,
 107         LP8555_COMBINED1,       /* Brightness register with shaped PWM */
 108         LP8555_COMBINED2,       /* PWM with shaped brightness register */
 109 };
 110
 111 enum lp8556_brightness_source {
 112         LP8556_PWM_ONLY,
 113         LP8556_COMBINED1,       /* pwm + i2c before the shaper block */
 114         LP8556_I2C_ONLY,
 115         LP8556_COMBINED2,       /* pwm + i2c after the shaper block */
 116 };
 117
 118 enum lp8557_brightness_source {
 119         LP8557_PWM_ONLY,
 120         LP8557_I2C_ONLY,
 121         LP8557_COMBINED1,       /* pwm + i2c after the shaper block */
 122         LP8557_COMBINED2,       /* pwm + i2c before the shaper block */
 123 };
 124
 125 struct lp855x_rom_data {
 126         u8 addr;
 127         u8 val;
 128 };
 129
 130 /**
 131  * struct lp855x_platform_data
 132  * @name : Backlight driver name. If it is not defined, default name is set.
 133  * @device_control : value of DEVICE CONTROL register
 134  * @initial_brightness : initial value of backlight brightness
 135  * @period_ns : platform specific pwm period value. unit is nano.
 136                 Only valid when mode is PWM_BASED.
 137  * @size_program : total size of lp855x_rom_data
 138  * @rom_data : list of new eeprom/eprom registers
 139  */
 140 struct lp855x_platform_data {
 141         const char *name;
 142         u8 device_control;
 143         u8 initial_brightness;
 144         unsigned int period_ns;
 145         int size_program;
 146         struct lp855x_rom_data *rom_data;
 147 };
 148
 149 #endif