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Merge branch 'xtensa-sim-params' into xtensa-fixes
[karo-tx-linux.git] / include / media / i2c / adp1653.h
1 /*
2  * include/media/i2c/adp1653.h
3  *
4  * Copyright (C) 2008--2011 Nokia Corporation
5  *
6  * Contact: Sakari Ailus <sakari.ailus@iki.fi>
7  *
8  * Contributors:
9  *      Sakari Ailus <sakari.ailus@iki.fi>
10  *      Tuukka Toivonen <tuukkat76@gmail.com>
11  *
12  * This program is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU General Public License
14  * version 2 as published by the Free Software Foundation.
15  *
16  * This program is distributed in the hope that it will be useful, but
17  * WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
19  * General Public License for more details.
20  *
21  */
22
23 #ifndef ADP1653_H
24 #define ADP1653_H
25
26 #include <linux/i2c.h>
27 #include <linux/mutex.h>
28 #include <linux/videodev2.h>
29 #include <media/v4l2-ctrls.h>
30 #include <media/v4l2-subdev.h>
31
32 #define ADP1653_NAME                            "adp1653"
33 #define ADP1653_I2C_ADDR                        (0x60 >> 1)
34
35 /* Register definitions */
36 #define ADP1653_REG_OUT_SEL                     0x00
37 #define ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN     0x01
38 #define ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX     0x0b
39 #define ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN     0x0c
40 #define ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX     0x1f
41 #define ADP1653_REG_OUT_SEL_HPLED_SHIFT         3
42 #define ADP1653_REG_OUT_SEL_ILED_MAX            0x07
43 #define ADP1653_REG_OUT_SEL_ILED_SHIFT          0
44
45 #define ADP1653_REG_CONFIG                      0x01
46 #define ADP1653_REG_CONFIG_TMR_CFG              (1 << 4)
47 #define ADP1653_REG_CONFIG_TMR_SET_MAX          0x0f
48 #define ADP1653_REG_CONFIG_TMR_SET_SHIFT        0
49
50 #define ADP1653_REG_SW_STROBE                   0x02
51 #define ADP1653_REG_SW_STROBE_SW_STROBE         (1 << 0)
52
53 #define ADP1653_REG_FAULT                       0x03
54 #define ADP1653_REG_FAULT_FLT_SCP               (1 << 3)
55 #define ADP1653_REG_FAULT_FLT_OT                (1 << 2)
56 #define ADP1653_REG_FAULT_FLT_TMR               (1 << 1)
57 #define ADP1653_REG_FAULT_FLT_OV                (1 << 0)
58
59 #define ADP1653_INDICATOR_INTENSITY_MIN         0
60 #define ADP1653_INDICATOR_INTENSITY_STEP        2500
61 #define ADP1653_INDICATOR_INTENSITY_MAX         \
62         (ADP1653_REG_OUT_SEL_ILED_MAX * ADP1653_INDICATOR_INTENSITY_STEP)
63 #define ADP1653_INDICATOR_INTENSITY_uA_TO_REG(a) \
64         ((a) / ADP1653_INDICATOR_INTENSITY_STEP)
65 #define ADP1653_INDICATOR_INTENSITY_REG_TO_uA(a) \
66         ((a) * ADP1653_INDICATOR_INTENSITY_STEP)
67
68 #define ADP1653_FLASH_INTENSITY_BASE            35
69 #define ADP1653_FLASH_INTENSITY_STEP            15
70 #define ADP1653_FLASH_INTENSITY_MIN                                     \
71         (ADP1653_FLASH_INTENSITY_BASE                                   \
72          + ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN * ADP1653_FLASH_INTENSITY_STEP)
73 #define ADP1653_FLASH_INTENSITY_MAX                     \
74         (ADP1653_FLASH_INTENSITY_MIN +                  \
75          (ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX -         \
76           ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN + 1) *    \
77          ADP1653_FLASH_INTENSITY_STEP)
78
79 #define ADP1653_FLASH_INTENSITY_mA_TO_REG(a)                            \
80         ((a) < ADP1653_FLASH_INTENSITY_BASE ? 0 :                       \
81          (((a) - ADP1653_FLASH_INTENSITY_BASE) / ADP1653_FLASH_INTENSITY_STEP))
82 #define ADP1653_FLASH_INTENSITY_REG_TO_mA(a)            \
83         ((a) * ADP1653_FLASH_INTENSITY_STEP + ADP1653_FLASH_INTENSITY_BASE)
84
85 #define ADP1653_TORCH_INTENSITY_MIN                                     \
86         (ADP1653_FLASH_INTENSITY_BASE                                   \
87          + ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN * ADP1653_FLASH_INTENSITY_STEP)
88 #define ADP1653_TORCH_INTENSITY_MAX                     \
89         (ADP1653_TORCH_INTENSITY_MIN +                  \
90          (ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX -         \
91           ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN + 1) *    \
92          ADP1653_FLASH_INTENSITY_STEP)
93
94 struct adp1653_platform_data {
95         int (*power)(struct v4l2_subdev *sd, int on);
96
97         u32 max_flash_timeout;          /* flash light timeout in us */
98         u32 max_flash_intensity;        /* led intensity, flash mode, mA */
99         u32 max_torch_intensity;        /* led intensity, torch mode, mA */
100         u32 max_indicator_intensity;    /* indicator led intensity, uA */
101
102         struct gpio_desc *enable_gpio;  /* for device-tree based boot */
103 };
104
105 #define to_adp1653_flash(sd)    container_of(sd, struct adp1653_flash, subdev)
106
107 struct adp1653_flash {
108         struct v4l2_subdev subdev;
109         struct adp1653_platform_data *platform_data;
110
111         struct v4l2_ctrl_handler ctrls;
112         struct v4l2_ctrl *led_mode;
113         struct v4l2_ctrl *flash_timeout;
114         struct v4l2_ctrl *flash_intensity;
115         struct v4l2_ctrl *torch_intensity;
116         struct v4l2_ctrl *indicator_intensity;
117
118         struct mutex power_lock;
119         int power_count;
120         int fault;
121 };
122
123 #endif /* ADP1653_H */