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drivers/video/backlight/aat2870_bl.c: fix setting max_current
[~shefty/rdma-dev.git] / 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 */