diff options
Diffstat (limited to 'include/linux/mfd/lm3632.h')
| -rwxr-xr-x | include/linux/mfd/lm3632.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/include/linux/mfd/lm3632.h b/include/linux/mfd/lm3632.h new file mode 100755 index 00000000..bd973c69 --- /dev/null +++ b/include/linux/mfd/lm3632.h @@ -0,0 +1,106 @@ +/* + * TI LM3632 MFD Driver + * + * Copyright 2015 Texas Instruments + * + * Author: Milo Kim <milo.kim@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#ifndef __MFD_LM3632_H__ +#define __MFD_LM3632_H__ + +#include <linux/gpio.h> +#include <linux/pwm.h> +#include <linux/regmap.h> +#include <linux/regulator/machine.h> + +/* Registers */ +#define LM3632_REG_CONFIG1 0x02 +#define LM3632_OVP_MASK (BIT(5) | BIT(6) | BIT(7)) +#define LM3632_OVP_25V BIT(6) + +#define LM3632_REG_CONFIG2 0x03 +#define LM3632_SWFREQ_MASK BIT(7) +#define LM3632_SWFREQ_1MHZ BIT(7) + +#define LM3632_REG_BRT_LSB 0x04 +#define LM3632_BRT_LSB_MASK (BIT(0) | BIT(1) | BIT(2)) +#define LM3632_REG_BRT_MSB 0x05 +#define LM3632_BRT_MSB_SHIFT 3 + +#define LM3632_REG_IO_CTRL 0x09 +#define LM3632_PWM_MASK BIT(6) +#define LM3632_PWM_SHIFT 6 + +#define LM3632_REG_ENABLE 0x0A +#define LM3632_BL_EN_MASK BIT(0) +#define LM3632_BL_EN_SHIFT 0 +#define LM3632_BL_STRING_MASK (BIT(3) | BIT(4)) +#define LM3632_BL_ONE_STRING BIT(4) +#define LM3632_BL_TWO_STRINGS BIT(3) + +#define LM3632_REG_BIAS_CONFIG 0x0C +#define LM3632_EXT_EN_MASK BIT(0) +#define LM3632_EN_VNEG_MASK BIT(1) +#define LM3632_EN_VPOS_MASK BIT(2) + +#define LM3632_REG_VOUT_BOOST 0x0D +#define LM3632_REG_VOUT_POS 0x0E +#define LM3632_REG_VOUT_NEG 0x0F +#define LM3632_VOUT_MASK 0x3F + +#define LM3632_MAX_REGISTERS 0x10 + +#define LM3632_NUM_REGULATORS 3 + +/* + * struct lm3632_backlight_platform_data + * @name: Backlight driver name + * @is_full_strings: set true if two strings are used + * @pwm_period: Platform specific PWM period value. unit is nano + */ +struct lm3632_backlight_platform_data { + const char *name; + bool is_full_strings; + + /* Only valid in case of PWM mode */ + unsigned int pwm_period; +}; + +/* + * struct lm3632_platform_data + * @en_gpio: GPIO for chip enable pin + * @lcm_en1_gpio: GPIO for VPOS LDO + * @lcm_en2_gpio: GPIO for VNEG LDO + * @regulator_data: Regulator initial data for LCD bias + * @bl_pdata: Backlight platform data + */ +struct lm3632_platform_data { + int en_gpio; + int lcm_en1_gpio; + int lcm_en2_gpio; + struct regulator_init_data *regulator_data[LM3632_NUM_REGULATORS]; + struct lm3632_backlight_platform_data *bl_pdata; +}; + +/* + * struct lm3632 + * @dev: Parent device pointer + * @regmap: Used for i2c communcation on accessing registers + * @pdata: LMU platform specific data + */ +struct lm3632 { + struct device *dev; + struct regmap *regmap; + struct lm3632_platform_data *pdata; +}; + +int lm3632_read_byte(struct lm3632 *lm3632, u8 reg, u8 *read); +int lm3632_write_byte(struct lm3632 *lm3632, u8 reg, u8 data); +int lm3632_update_bits(struct lm3632 *lm3632, u8 reg, u8 mask, u8 data); +#endif |