aat2870.h

  1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * linux/include/linux/mfd/aat2870.h
  4 *
  5 * Copyright (c) 2011, NVIDIA Corporation.
  6 * Author: Jin Park <jinyoungp@nvidia.com>
  7 */
  8
  9#ifndef __LINUX_MFD_AAT2870_H
 10#define __LINUX_MFD_AAT2870_H
 11
 12#include <linux/debugfs.h>
 13#include <linux/i2c.h>
 14
 15/* Register offsets */
 16#define AAT2870_BL_CH_EN	0x00
 17#define AAT2870_BLM		0x01
 18#define AAT2870_BLS		0x02
 19#define AAT2870_BL1		0x03
 20#define AAT2870_BL2		0x04
 21#define AAT2870_BL3		0x05
 22#define AAT2870_BL4		0x06
 23#define AAT2870_BL5		0x07
 24#define AAT2870_BL6		0x08
 25#define AAT2870_BL7		0x09
 26#define AAT2870_BL8		0x0A
 27#define AAT2870_FLR		0x0B
 28#define AAT2870_FM		0x0C
 29#define AAT2870_FS		0x0D
 30#define AAT2870_ALS_CFG0	0x0E
 31#define AAT2870_ALS_CFG1	0x0F
 32#define AAT2870_ALS_CFG2	0x10
 33#define AAT2870_AMB		0x11
 34#define AAT2870_ALS0		0x12
 35#define AAT2870_ALS1		0x13
 36#define AAT2870_ALS2		0x14
 37#define AAT2870_ALS3		0x15
 38#define AAT2870_ALS4		0x16
 39#define AAT2870_ALS5		0x17
 40#define AAT2870_ALS6		0x18
 41#define AAT2870_ALS7		0x19
 42#define AAT2870_ALS8		0x1A
 43#define AAT2870_ALS9		0x1B
 44#define AAT2870_ALSA		0x1C
 45#define AAT2870_ALSB		0x1D
 46#define AAT2870_ALSC		0x1E
 47#define AAT2870_ALSD		0x1F
 48#define AAT2870_ALSE		0x20
 49#define AAT2870_ALSF		0x21
 50#define AAT2870_SUB_SET		0x22
 51#define AAT2870_SUB_CTRL	0x23
 52#define AAT2870_LDO_AB		0x24
 53#define AAT2870_LDO_CD		0x25
 54#define AAT2870_LDO_EN		0x26
 55#define AAT2870_REG_NUM		0x27
 56
 57/* Device IDs */
 58enum aat2870_id {
 59	AAT2870_ID_BL,
 60	AAT2870_ID_LDOA,
 61	AAT2870_ID_LDOB,
 62	AAT2870_ID_LDOC,
 63	AAT2870_ID_LDOD
 64};
 65
 66/* Backlight channels */
 67#define AAT2870_BL_CH1		0x01
 68#define AAT2870_BL_CH2		0x02
 69#define AAT2870_BL_CH3		0x04
 70#define AAT2870_BL_CH4		0x08
 71#define AAT2870_BL_CH5		0x10
 72#define AAT2870_BL_CH6		0x20
 73#define AAT2870_BL_CH7		0x40
 74#define AAT2870_BL_CH8		0x80
 75#define AAT2870_BL_CH_ALL	0xFF
 76
 77/* Backlight current magnitude (mA) */
 78enum aat2870_current {
 79	AAT2870_CURRENT_0_45 = 1,
 80	AAT2870_CURRENT_0_90,
 81	AAT2870_CURRENT_1_80,
 82	AAT2870_CURRENT_2_70,
 83	AAT2870_CURRENT_3_60,
 84	AAT2870_CURRENT_4_50,
 85	AAT2870_CURRENT_5_40,
 86	AAT2870_CURRENT_6_30,
 87	AAT2870_CURRENT_7_20,
 88	AAT2870_CURRENT_8_10,
 89	AAT2870_CURRENT_9_00,
 90	AAT2870_CURRENT_9_90,
 91	AAT2870_CURRENT_10_8,
 92	AAT2870_CURRENT_11_7,
 93	AAT2870_CURRENT_12_6,
 94	AAT2870_CURRENT_13_5,
 95	AAT2870_CURRENT_14_4,
 96	AAT2870_CURRENT_15_3,
 97	AAT2870_CURRENT_16_2,
 98	AAT2870_CURRENT_17_1,
 99	AAT2870_CURRENT_18_0,
100	AAT2870_CURRENT_18_9,
101	AAT2870_CURRENT_19_8,
102	AAT2870_CURRENT_20_7,
103	AAT2870_CURRENT_21_6,
104	AAT2870_CURRENT_22_5,
105	AAT2870_CURRENT_23_4,
106	AAT2870_CURRENT_24_3,
107	AAT2870_CURRENT_25_2,
108	AAT2870_CURRENT_26_1,
109	AAT2870_CURRENT_27_0,
110	AAT2870_CURRENT_27_9
111};
112
113struct aat2870_register {
114	bool readable;
115	bool writeable;
116	u8 value;
117};
118
119struct aat2870_data {
120	struct device *dev;
121	struct i2c_client *client;
122
123	struct mutex io_lock;
124	struct aat2870_register *reg_cache; /* register cache */
125	int en_pin; /* enable GPIO pin (if < 0, ignore this value) */
126	bool is_enable;
127
128	/* init and uninit for platform specified */
129	int (*init)(struct aat2870_data *aat2870);
130	void (*uninit)(struct aat2870_data *aat2870);
131
132	/* i2c io funcntions */
133	int (*read)(struct aat2870_data *aat2870, u8 addr, u8 *val);
134	int (*write)(struct aat2870_data *aat2870, u8 addr, u8 val);
135	int (*update)(struct aat2870_data *aat2870, u8 addr, u8 mask, u8 val);
136};
137
138struct aat2870_subdev_info {
139	int id;
140	const char *name;
141	void *platform_data;
142};
143
144struct aat2870_platform_data {
145	int en_pin; /* enable GPIO pin (if < 0, ignore this value) */
146
147	struct aat2870_subdev_info *subdevs;
148	int num_subdevs;
149
150	/* init and uninit for platform specified */
151	int (*init)(struct aat2870_data *aat2870);
152	void (*uninit)(struct aat2870_data *aat2870);
153};
154
155struct aat2870_bl_platform_data {
156	/* backlight channels, default is AAT2870_BL_CH_ALL */
157	int channels;
158	/* backlight current magnitude, default is AAT2870_CURRENT_27_9 */
159	int max_current;
160	/* maximum brightness, default is 255 */
161	int max_brightness;
162};
163
164#endif /* __LINUX_MFD_AAT2870_H */