include/linux/mfd/aat2870.h

   1 /*
   2  * linux/include/linux/mfd/aat2870.h
   3  *
   4  * Copyright (c) 2011, NVIDIA Corporation.
   5  * Author: Jin Park <jinyoungp@nvidia.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  19  * 02110-1301 USA
  20  */
  21
  22 #ifndef __LINUX_MFD_AAT2870_H
  23 #define __LINUX_MFD_AAT2870_H
  24
  25 #include <linux/debugfs.h>
  26 #include <linux/i2c.h>
  27
  28 /* Register offsets */
  29 #define AAT2870_BL_CH_EN        0x00
  30 #define AAT2870_BLM             0x01
  31 #define AAT2870_BLS             0x02
  32 #define AAT2870_BL1             0x03
  33 #define AAT2870_BL2             0x04
  34 #define AAT2870_BL3             0x05
  35 #define AAT2870_BL4             0x06
  36 #define AAT2870_BL5             0x07
  37 #define AAT2870_BL6             0x08
  38 #define AAT2870_BL7             0x09
  39 #define AAT2870_BL8             0x0A
  40 #define AAT2870_FLR             0x0B
  41 #define AAT2870_FM              0x0C
  42 #define AAT2870_FS              0x0D
  43 #define AAT2870_ALS_CFG0        0x0E
  44 #define AAT2870_ALS_CFG1        0x0F
  45 #define AAT2870_ALS_CFG2        0x10
  46 #define AAT2870_AMB             0x11
  47 #define AAT2870_ALS0            0x12
  48 #define AAT2870_ALS1            0x13
  49 #define AAT2870_ALS2            0x14
  50 #define AAT2870_ALS3            0x15
  51 #define AAT2870_ALS4            0x16
  52 #define AAT2870_ALS5            0x17
  53 #define AAT2870_ALS6            0x18
  54 #define AAT2870_ALS7            0x19
  55 #define AAT2870_ALS8            0x1A
  56 #define AAT2870_ALS9            0x1B
  57 #define AAT2870_ALSA            0x1C
  58 #define AAT2870_ALSB            0x1D
  59 #define AAT2870_ALSC            0x1E
  60 #define AAT2870_ALSD            0x1F
  61 #define AAT2870_ALSE            0x20
  62 #define AAT2870_ALSF            0x21
  63 #define AAT2870_SUB_SET         0x22
  64 #define AAT2870_SUB_CTRL        0x23
  65 #define AAT2870_LDO_AB          0x24
  66 #define AAT2870_LDO_CD          0x25
  67 #define AAT2870_LDO_EN          0x26
  68 #define AAT2870_REG_NUM         0x27
  69
  70 /* Device IDs */
  71 enum aat2870_id {
  72         AAT2870_ID_BL,
  73         AAT2870_ID_LDOA,
  74         AAT2870_ID_LDOB,
  75         AAT2870_ID_LDOC,
  76         AAT2870_ID_LDOD
  77 };
  78
  79 /* Backlight channels */
  80 #define AAT2870_BL_CH1          0x01
  81 #define AAT2870_BL_CH2          0x02
  82 #define AAT2870_BL_CH3          0x04
  83 #define AAT2870_BL_CH4          0x08
  84 #define AAT2870_BL_CH5          0x10
  85 #define AAT2870_BL_CH6          0x20
  86 #define AAT2870_BL_CH7          0x40
  87 #define AAT2870_BL_CH8          0x80
  88 #define AAT2870_BL_CH_ALL       0xFF
  89
  90 /* Backlight current magnitude (mA) */
  91 enum aat2870_current {
  92         AAT2870_CURRENT_0_45 = 1,
  93         AAT2870_CURRENT_0_90,
  94         AAT2870_CURRENT_1_80,
  95         AAT2870_CURRENT_2_70,
  96         AAT2870_CURRENT_3_60,
  97         AAT2870_CURRENT_4_50,
  98         AAT2870_CURRENT_5_40,
  99         AAT2870_CURRENT_6_30,
 100         AAT2870_CURRENT_7_20,
 101         AAT2870_CURRENT_8_10,
 102         AAT2870_CURRENT_9_00,
 103         AAT2870_CURRENT_9_90,
 104         AAT2870_CURRENT_10_8,
 105         AAT2870_CURRENT_11_7,
 106         AAT2870_CURRENT_12_6,
 107         AAT2870_CURRENT_13_5,
 108         AAT2870_CURRENT_14_4,
 109         AAT2870_CURRENT_15_3,
 110         AAT2870_CURRENT_16_2,
 111         AAT2870_CURRENT_17_1,
 112         AAT2870_CURRENT_18_0,
 113         AAT2870_CURRENT_18_9,
 114         AAT2870_CURRENT_19_8,
 115         AAT2870_CURRENT_20_7,
 116         AAT2870_CURRENT_21_6,
 117         AAT2870_CURRENT_22_5,
 118         AAT2870_CURRENT_23_4,
 119         AAT2870_CURRENT_24_3,
 120         AAT2870_CURRENT_25_2,
 121         AAT2870_CURRENT_26_1,
 122         AAT2870_CURRENT_27_0,
 123         AAT2870_CURRENT_27_9
 124 };
 125
 126 struct aat2870_register {
 127         bool readable;
 128         bool writeable;
 129         u8 value;
 130 };
 131
 132 struct aat2870_data {
 133         struct device *dev;
 134         struct i2c_client *client;
 135
 136         struct mutex io_lock;
 137         struct aat2870_register *reg_cache; /* register cache */
 138         int en_pin; /* enable GPIO pin (if < 0, ignore this value) */
 139         bool is_enable;
 140
 141         /* init and uninit for platform specified */
 142         int (*init)(struct aat2870_data *aat2870);
 143         void (*uninit)(struct aat2870_data *aat2870);
 144
 145         /* i2c io funcntions */
 146         int (*read)(struct aat2870_data *aat2870, u8 addr, u8 *val);
 147         int (*write)(struct aat2870_data *aat2870, u8 addr, u8 val);
 148         int (*update)(struct aat2870_data *aat2870, u8 addr, u8 mask, u8 val);
 149
 150         /* for debugfs */
 151         struct dentry *dentry_root;
 152         struct dentry *dentry_reg;
 153 };
 154
 155 struct aat2870_subdev_info {
 156         int id;
 157         const char *name;
 158         void *platform_data;
 159 };
 160
 161 struct aat2870_platform_data {
 162         int en_pin; /* enable GPIO pin (if < 0, ignore this value) */
 163
 164         struct aat2870_subdev_info *subdevs;
 165         int num_subdevs;
 166
 167         /* init and uninit for platform specified */
 168         int (*init)(struct aat2870_data *aat2870);
 169         void (*uninit)(struct aat2870_data *aat2870);
 170 };
 171
 172 struct aat2870_bl_platform_data {
 173         /* backlight channels, default is AAT2870_BL_CH_ALL */
 174         int channels;
 175         /* backlight current magnitude, default is AAT2870_CURRENT_27_9 */
 176         int max_current;
 177         /* maximum brightness, default is 255 */
 178         int max_brightness;
 179 };
 180
 181 #endif /* __LINUX_MFD_AAT2870_H */