include/linux/mfd/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 <[email protected]>
   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 */
  58 enum 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) */
  78 enum 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
 113 struct aat2870_register {
 114         bool readable;
 115         bool writeable;
 116         u8 value;
 117 };
 118
 119 struct 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         /* for debugfs */
 138         struct dentry *dentry_root;
 139 };
 140
 141 struct aat2870_subdev_info {
 142         int id;
 143         const char *name;
 144         void *platform_data;
 145 };
 146
 147 struct aat2870_platform_data {
 148         int en_pin; /* enable GPIO pin (if < 0, ignore this value) */
 149
 150         struct aat2870_subdev_info *subdevs;
 151         int num_subdevs;
 152
 153         /* init and uninit for platform specified */
 154         int (*init)(struct aat2870_data *aat2870);
 155         void (*uninit)(struct aat2870_data *aat2870);
 156 };
 157
 158 struct aat2870_bl_platform_data {
 159         /* backlight channels, default is AAT2870_BL_CH_ALL */
 160         int channels;
 161         /* backlight current magnitude, default is AAT2870_CURRENT_27_9 */
 162         int max_current;
 163         /* maximum brightness, default is 255 */
 164         int max_brightness;
 165 };
 166
 167 #endif /* __LINUX_MFD_AAT2870_H */