projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 7be865ab KM |
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 | /* DEVICE CONTROL register - LP8556 */ | |
| 44 | #define LP8556_PWM_CONFIG (LP8556_PWM_ONLY << BRT_MODE_SHFT) | |
| 45 | #define LP8556_COMB1_CONFIG (LP8556_COMBINED1 << BRT_MODE_SHFT) | |
| 46 | #define LP8556_I2C_CONFIG ((ENABLE_BL << BL_CTL_SHFT) | \ | |
| 47 | (LP8556_I2C_ONLY << BRT_MODE_SHFT)) | |
| 48 | #define LP8556_COMB2_CONFIG (LP8556_COMBINED2 << BRT_MODE_SHFT) | |
| 49 | ||
| 50 | /* ROM area boundary */ | |
| 51 | #define EEPROM_START (0xA0) | |
| 52 | #define EEPROM_END (0xA7) | |
| 53 | #define EPROM_START (0xA0) | |
| 54 | #define EPROM_END (0xAF) | |
| 55 | ||
| 56 | enum lp855x_chip_id { | |
| 57 | LP8550, | |
| 58 | LP8551, | |
| 59 | LP8552, | |
| 60 | LP8553, | |
| 61 | LP8556, | |
| 62 | }; | |
| 63 | ||
| 64 | enum lp855x_brightness_ctrl_mode { | |
| 65 | PWM_BASED = 1, | |
| 66 | REGISTER_BASED, | |
| 67 | }; | |
| 68 | ||
| 69 | enum lp8550_brighntess_source { | |
| 70 | LP8550_PWM_ONLY, | |
| 71 | LP8550_I2C_ONLY = 2, | |
| 72 | }; | |
| 73 | ||
| 74 | enum lp8551_brighntess_source { | |
| 75 | LP8551_PWM_ONLY = LP8550_PWM_ONLY, | |
| 76 | LP8551_I2C_ONLY = LP8550_I2C_ONLY, | |
| 77 | }; | |
| 78 | ||
| 79 | enum lp8552_brighntess_source { | |
| 80 | LP8552_PWM_ONLY = LP8550_PWM_ONLY, | |
| 81 | LP8552_I2C_ONLY = LP8550_I2C_ONLY, | |
| 82 | }; | |
| 83 | ||
| 84 | enum lp8553_brighntess_source { | |
| 85 | LP8553_PWM_ONLY = LP8550_PWM_ONLY, | |
| 86 | LP8553_I2C_ONLY = LP8550_I2C_ONLY, | |
| 87 | }; | |
| 88 | ||
| 89 | enum lp8556_brightness_source { | |
| 90 | LP8556_PWM_ONLY, | |
| 91 | LP8556_COMBINED1, /* pwm + i2c before the shaper block */ | |
| 92 | LP8556_I2C_ONLY, | |
| 93 | LP8556_COMBINED2, /* pwm + i2c after the shaper block */ | |
| 94 | }; | |
| 95 | ||
| 96 | struct lp855x_pwm_data { | |
| 97 | void (*pwm_set_intensity) (int brightness, int max_brightness); | |
| 98 | int (*pwm_get_intensity) (int max_brightness); | |
| 99 | }; | |
| 100 | ||
| 101 | struct lp855x_rom_data { | |
| 102 | u8 addr; | |
| 103 | u8 val; | |
| 104 | }; | |
| 105 | ||
| 106 | /** | |
| 107 | * struct lp855x_platform_data | |
| 108 | * @name : Backlight driver name. If it is not defined, default name is set. | |
| 109 | * @mode : brightness control by pwm or lp855x register | |
| 110 | * @device_control : value of DEVICE CONTROL register | |
| 111 | * @initial_brightness : initial value of backlight brightness | |
| 112 | * @pwm_data : platform specific pwm generation functions. | |
| 113 | Only valid when mode is PWM_BASED. | |
| 114 | * @load_new_rom_data : | |
| 115 | 0 : use default configuration data | |
| 116 | 1 : update values of eeprom or eprom registers on loading driver | |
| 117 | * @size_program : total size of lp855x_rom_data | |
| 118 | * @rom_data : list of new eeprom/eprom registers | |
| 119 | */ | |
| 120 | struct lp855x_platform_data { | |
| 121 | char *name; | |
| 122 | enum lp855x_brightness_ctrl_mode mode; | |
| 123 | u8 device_control; | |
| 124 | int initial_brightness; | |
| 125 | struct lp855x_pwm_data pwm_data; | |
| 126 | u8 load_new_rom_data; | |
| 127 | int size_program; | |
| 128 | struct lp855x_rom_data *rom_data; | |
| 129 | }; | |
| 130 | ||
| 131 | #endif |