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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110/* SPDX-License-Identifier: GPL-2.0-only *//* * TI/National Semiconductor LP3943 Device * * Copyright 2013 Texas Instruments * * Author: Milo Kim <milo.kim@ti.com> */
#ifndef __MFD_LP3943_H__#define __MFD_LP3943_H__
#include <linux/gpio.h>#include <linux/regmap.h>
/* Registers */#define LP3943_REG_GPIO_A 0x00#define LP3943_REG_GPIO_B 0x01#define LP3943_REG_PRESCALE0 0x02#define LP3943_REG_PWM0 0x03#define LP3943_REG_PRESCALE1 0x04#define LP3943_REG_PWM1 0x05#define LP3943_REG_MUX0 0x06#define LP3943_REG_MUX1 0x07#define LP3943_REG_MUX2 0x08#define LP3943_REG_MUX3 0x09
/* Bit description for LP3943_REG_MUX0 ~ 3 */#define LP3943_GPIO_IN 0x00#define LP3943_GPIO_OUT_HIGH 0x00#define LP3943_GPIO_OUT_LOW 0x01#define LP3943_DIM_PWM0 0x02#define LP3943_DIM_PWM1 0x03
#define LP3943_NUM_PWMS 2
enum lp3943_pwm_output { LP3943_PWM_OUT0, LP3943_PWM_OUT1, LP3943_PWM_OUT2, LP3943_PWM_OUT3, LP3943_PWM_OUT4, LP3943_PWM_OUT5, LP3943_PWM_OUT6, LP3943_PWM_OUT7, LP3943_PWM_OUT8, LP3943_PWM_OUT9, LP3943_PWM_OUT10, LP3943_PWM_OUT11, LP3943_PWM_OUT12, LP3943_PWM_OUT13, LP3943_PWM_OUT14, LP3943_PWM_OUT15,};
/* * struct lp3943_pwm_map * @output: Output pins which are mapped to each PWM channel * @num_outputs: Number of outputs */struct lp3943_pwm_map { enum lp3943_pwm_output *output; int num_outputs;};
/* * struct lp3943_platform_data * @pwms: Output channel definitions for PWM channel 0 and 1 */struct lp3943_platform_data { struct lp3943_pwm_map *pwms[LP3943_NUM_PWMS];};
/* * struct lp3943_reg_cfg * @reg: Register address * @mask: Register bit mask to be updated * @shift: Register bit shift */struct lp3943_reg_cfg { u8 reg; u8 mask; u8 shift;};
/* * struct lp3943 * @dev: Parent device pointer * @regmap: Used for I2C communication on accessing registers * @pdata: LP3943 platform specific data * @mux_cfg: Register configuration for pin MUX * @pin_used: Bit mask for output pin used. * This bitmask is used for pin assignment management. * 1 = pin used, 0 = available. * Only LSB 16 bits are used, but it is unsigned long type * for atomic bitwise operations. */struct lp3943 { struct device *dev; struct regmap *regmap; struct lp3943_platform_data *pdata; const struct lp3943_reg_cfg *mux_cfg; unsigned long pin_used;};
int lp3943_read_byte(struct lp3943 *lp3943, u8 reg, u8 *read);int lp3943_write_byte(struct lp3943 *lp3943, u8 reg, u8 data);int lp3943_update_bits(struct lp3943 *lp3943, u8 reg, u8 mask, u8 data);#endif