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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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4.1 kB · 145 lines
C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146/* SPDX-License-Identifier: GPL-2.0-only *//* * LP855x Backlight Driver * * Copyright (C) 2011 Texas Instruments */
#ifndef _LP855X_H#define _LP855X_H
#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
/* CONFIG register - LP8555 */#define LP8555_PWM_STANDBY BIT(7)#define LP8555_PWM_FILTER BIT(6)#define LP8555_RELOAD_EPROM BIT(3) /* use it if EPROMs should be reset when the backlight turns on */#define LP8555_OFF_OPENLEDS BIT(2)#define LP8555_PWM_CONFIG LP8555_PWM_ONLY#define LP8555_I2C_CONFIG LP8555_I2C_ONLY#define LP8555_COMB1_CONFIG LP8555_COMBINED1#define LP8555_COMB2_CONFIG LP8555_COMBINED2
/* 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 */
/* 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, LP8555, 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 lp8555_brightness_source { LP8555_PWM_ONLY, LP8555_I2C_ONLY, LP8555_COMBINED1, /* Brightness register with shaped PWM */ LP8555_COMBINED2, /* PWM with shaped brightness register */};
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 - lp855 platform-specific 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