diff options
Diffstat (limited to 'include/linux/platform_data/lp855x.h')
| -rw-r--r-- | include/linux/platform_data/lp855x.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/include/linux/platform_data/lp855x.h b/include/linux/platform_data/lp855x.h new file mode 100644 index 000000000..ab222dd05 --- /dev/null +++ b/include/linux/platform_data/lp855x.h @@ -0,0 +1,145 @@ +/* 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 + * @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 |