projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 470eca47 MK |
1 | /* |
| 2 | * TI/National Semiconductor LP3943 Device | |
| 3 | * | |
| 4 | * Copyright 2013 Texas Instruments | |
| 5 | * | |
| 6 | * Author: Milo Kim <milo.kim@ti.com> | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License version 2 as | |
| 10 | * published by the Free Software Foundation. | |
| 11 | * | |
| 12 | */ | |
| 13 | ||
| 14 | #ifndef __MFD_LP3943_H__ | |
| 15 | #define __MFD_LP3943_H__ | |
| 16 | ||
| 17 | #include <linux/gpio.h> | |
| 18 | #include <linux/pwm.h> | |
| 19 | #include <linux/regmap.h> | |
| 20 | ||
| 21 | /* Registers */ | |
| 22 | #define LP3943_REG_GPIO_A 0x00 | |
| 23 | #define LP3943_REG_GPIO_B 0x01 | |
| 24 | #define LP3943_REG_PRESCALE0 0x02 | |
| 25 | #define LP3943_REG_PWM0 0x03 | |
| 26 | #define LP3943_REG_PRESCALE1 0x04 | |
| 27 | #define LP3943_REG_PWM1 0x05 | |
| 28 | #define LP3943_REG_MUX0 0x06 | |
| 29 | #define LP3943_REG_MUX1 0x07 | |
| 30 | #define LP3943_REG_MUX2 0x08 | |
| 31 | #define LP3943_REG_MUX3 0x09 | |
| 32 | ||
| 33 | /* Bit description for LP3943_REG_MUX0 ~ 3 */ | |
| 34 | #define LP3943_GPIO_IN 0x00 | |
| 35 | #define LP3943_GPIO_OUT_HIGH 0x00 | |
| 36 | #define LP3943_GPIO_OUT_LOW 0x01 | |
| 37 | #define LP3943_DIM_PWM0 0x02 | |
| 38 | #define LP3943_DIM_PWM1 0x03 | |
| 39 | ||
| 40 | #define LP3943_NUM_PWMS 2 | |
| 41 | ||
| 42 | enum lp3943_pwm_output { | |
| 43 | LP3943_PWM_OUT0, | |
| 44 | LP3943_PWM_OUT1, | |
| 45 | LP3943_PWM_OUT2, | |
| 46 | LP3943_PWM_OUT3, | |
| 47 | LP3943_PWM_OUT4, | |
| 48 | LP3943_PWM_OUT5, | |
| 49 | LP3943_PWM_OUT6, | |
| 50 | LP3943_PWM_OUT7, | |
| 51 | LP3943_PWM_OUT8, | |
| 52 | LP3943_PWM_OUT9, | |
| 53 | LP3943_PWM_OUT10, | |
| 54 | LP3943_PWM_OUT11, | |
| 55 | LP3943_PWM_OUT12, | |
| 56 | LP3943_PWM_OUT13, | |
| 57 | LP3943_PWM_OUT14, | |
| 58 | LP3943_PWM_OUT15, | |
| 59 | }; | |
| 60 | ||
| 61 | /* | |
| 62 | * struct lp3943_pwm_map | |
| 63 | * @output: Output pins which are mapped to each PWM channel | |
| 64 | * @num_outputs: Number of outputs | |
| 65 | */ | |
| 66 | struct lp3943_pwm_map { | |
| 67 | enum lp3943_pwm_output *output; | |
| 68 | int num_outputs; | |
| 69 | }; | |
| 70 | ||
| 71 | /* | |
| 72 | * struct lp3943_platform_data | |
| 73 | * @pwms: Output channel definitions for PWM channel 0 and 1 | |
| 74 | */ | |
| 75 | struct lp3943_platform_data { | |
| 76 | struct lp3943_pwm_map *pwms[LP3943_NUM_PWMS]; | |
| 77 | }; | |
| 78 | ||
| 79 | /* | |
| 80 | * struct lp3943_reg_cfg | |
| 81 | * @reg: Register address | |
| 82 | * @mask: Register bit mask to be updated | |
| 83 | * @shift: Register bit shift | |
| 84 | */ | |
| 85 | struct lp3943_reg_cfg { | |
| 86 | u8 reg; | |
| 87 | u8 mask; | |
| 88 | u8 shift; | |
| 89 | }; | |
| 90 | ||
| 91 | /* | |
| 92 | * struct lp3943 | |
| 93 | * @dev: Parent device pointer | |
| 94 | * @regmap: Used for I2C communication on accessing registers | |
| 95 | * @pdata: LP3943 platform specific data | |
| 96 | * @mux_cfg: Register configuration for pin MUX | |
| 97 | * @pin_used: Bit mask for output pin used. | |
| 98 | * This bitmask is used for pin assignment management. | |
| 99 | * 1 = pin used, 0 = available. | |
| 100 | * Only LSB 16 bits are used, but it is unsigned long type | |
| 101 | * for atomic bitwise operations. | |
| 102 | */ | |
| 103 | struct lp3943 { | |
| 104 | struct device *dev; | |
| 105 | struct regmap *regmap; | |
| 106 | struct lp3943_platform_data *pdata; | |
| 107 | const struct lp3943_reg_cfg *mux_cfg; | |
| 108 | unsigned long pin_used; | |
| 109 | }; | |
| 110 | ||
| 111 | int lp3943_read_byte(struct lp3943 *lp3943, u8 reg, u8 *read); | |
| 112 | int lp3943_write_byte(struct lp3943 *lp3943, u8 reg, u8 data); | |
| 113 | int lp3943_update_bits(struct lp3943 *lp3943, u8 reg, u8 mask, u8 data); | |
| 114 | #endif |