root/include/linux/platform_data/lp855x.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * LP855x Backlight Driver
   4  *
   5  *                      Copyright (C) 2011 Texas Instruments
   6  */
   7 
   8 #ifndef _LP855X_H
   9 #define _LP855X_H
  10 
  11 #define BL_CTL_SHFT     (0)
  12 #define BRT_MODE_SHFT   (1)
  13 #define BRT_MODE_MASK   (0x06)
  14 
  15 /* Enable backlight. Only valid when BRT_MODE=10(I2C only) */
  16 #define ENABLE_BL       (1)
  17 #define DISABLE_BL      (0)
  18 
  19 #define I2C_CONFIG(id)  id ## _I2C_CONFIG
  20 #define PWM_CONFIG(id)  id ## _PWM_CONFIG
  21 
  22 /* DEVICE CONTROL register - LP8550 */
  23 #define LP8550_PWM_CONFIG       (LP8550_PWM_ONLY << BRT_MODE_SHFT)
  24 #define LP8550_I2C_CONFIG       ((ENABLE_BL << BL_CTL_SHFT) | \
  25                                 (LP8550_I2C_ONLY << BRT_MODE_SHFT))
  26 
  27 /* DEVICE CONTROL register - LP8551 */
  28 #define LP8551_PWM_CONFIG       LP8550_PWM_CONFIG
  29 #define LP8551_I2C_CONFIG       LP8550_I2C_CONFIG
  30 
  31 /* DEVICE CONTROL register - LP8552 */
  32 #define LP8552_PWM_CONFIG       LP8550_PWM_CONFIG
  33 #define LP8552_I2C_CONFIG       LP8550_I2C_CONFIG
  34 
  35 /* DEVICE CONTROL register - LP8553 */
  36 #define LP8553_PWM_CONFIG       LP8550_PWM_CONFIG
  37 #define LP8553_I2C_CONFIG       LP8550_I2C_CONFIG
  38 
  39 /* CONFIG register - LP8555 */
  40 #define LP8555_PWM_STANDBY      BIT(7)
  41 #define LP8555_PWM_FILTER       BIT(6)
  42 #define LP8555_RELOAD_EPROM     BIT(3)  /* use it if EPROMs should be reset
  43                                            when the backlight turns on */
  44 #define LP8555_OFF_OPENLEDS     BIT(2)
  45 #define LP8555_PWM_CONFIG       LP8555_PWM_ONLY
  46 #define LP8555_I2C_CONFIG       LP8555_I2C_ONLY
  47 #define LP8555_COMB1_CONFIG     LP8555_COMBINED1
  48 #define LP8555_COMB2_CONFIG     LP8555_COMBINED2
  49 
  50 /* DEVICE CONTROL register - LP8556 */
  51 #define LP8556_PWM_CONFIG       (LP8556_PWM_ONLY << BRT_MODE_SHFT)
  52 #define LP8556_COMB1_CONFIG     (LP8556_COMBINED1 << BRT_MODE_SHFT)
  53 #define LP8556_I2C_CONFIG       ((ENABLE_BL << BL_CTL_SHFT) | \
  54                                 (LP8556_I2C_ONLY << BRT_MODE_SHFT))
  55 #define LP8556_COMB2_CONFIG     (LP8556_COMBINED2 << BRT_MODE_SHFT)
  56 #define LP8556_FAST_CONFIG      BIT(7) /* use it if EPROMs should be maintained
  57                                           when exiting the low power mode */
  58 
  59 /* CONFIG register - LP8557 */
  60 #define LP8557_PWM_STANDBY      BIT(7)
  61 #define LP8557_PWM_FILTER       BIT(6)
  62 #define LP8557_RELOAD_EPROM     BIT(3)  /* use it if EPROMs should be reset
  63                                            when the backlight turns on */
  64 #define LP8557_OFF_OPENLEDS     BIT(2)
  65 #define LP8557_PWM_CONFIG       LP8557_PWM_ONLY
  66 #define LP8557_I2C_CONFIG       LP8557_I2C_ONLY
  67 #define LP8557_COMB1_CONFIG     LP8557_COMBINED1
  68 #define LP8557_COMB2_CONFIG     LP8557_COMBINED2
  69 
  70 enum lp855x_chip_id {
  71         LP8550,
  72         LP8551,
  73         LP8552,
  74         LP8553,
  75         LP8555,
  76         LP8556,
  77         LP8557,
  78 };
  79 
  80 enum lp8550_brighntess_source {
  81         LP8550_PWM_ONLY,
  82         LP8550_I2C_ONLY = 2,
  83 };
  84 
  85 enum lp8551_brighntess_source {
  86         LP8551_PWM_ONLY = LP8550_PWM_ONLY,
  87         LP8551_I2C_ONLY = LP8550_I2C_ONLY,
  88 };
  89 
  90 enum lp8552_brighntess_source {
  91         LP8552_PWM_ONLY = LP8550_PWM_ONLY,
  92         LP8552_I2C_ONLY = LP8550_I2C_ONLY,
  93 };
  94 
  95 enum lp8553_brighntess_source {
  96         LP8553_PWM_ONLY = LP8550_PWM_ONLY,
  97         LP8553_I2C_ONLY = LP8550_I2C_ONLY,
  98 };
  99 
 100 enum lp8555_brightness_source {
 101         LP8555_PWM_ONLY,
 102         LP8555_I2C_ONLY,
 103         LP8555_COMBINED1,       /* Brightness register with shaped PWM */
 104         LP8555_COMBINED2,       /* PWM with shaped brightness register */
 105 };
 106 
 107 enum lp8556_brightness_source {
 108         LP8556_PWM_ONLY,
 109         LP8556_COMBINED1,       /* pwm + i2c before the shaper block */
 110         LP8556_I2C_ONLY,
 111         LP8556_COMBINED2,       /* pwm + i2c after the shaper block */
 112 };
 113 
 114 enum lp8557_brightness_source {
 115         LP8557_PWM_ONLY,
 116         LP8557_I2C_ONLY,
 117         LP8557_COMBINED1,       /* pwm + i2c after the shaper block */
 118         LP8557_COMBINED2,       /* pwm + i2c before the shaper block */
 119 };
 120 
 121 struct lp855x_rom_data {
 122         u8 addr;
 123         u8 val;
 124 };
 125 
 126 /**
 127  * struct lp855x_platform_data
 128  * @name : Backlight driver name. If it is not defined, default name is set.
 129  * @device_control : value of DEVICE CONTROL register
 130  * @initial_brightness : initial value of backlight brightness
 131  * @period_ns : platform specific pwm period value. unit is nano.
 132                 Only valid when mode is PWM_BASED.
 133  * @size_program : total size of lp855x_rom_data
 134  * @rom_data : list of new eeprom/eprom registers
 135  */
 136 struct lp855x_platform_data {
 137         const char *name;
 138         u8 device_control;
 139         u8 initial_brightness;
 140         unsigned int period_ns;
 141         int size_program;
 142         struct lp855x_rom_data *rom_data;
 143 };
 144 
 145 #endif