1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * include/media/i2c/adp1653.h
4 *
5 * Copyright (C) 2008--2011 Nokia Corporation
6 *
7 * Contact: Sakari Ailus <sakari.ailus@iki.fi>
8 *
9 * Contributors:
10 * Sakari Ailus <sakari.ailus@iki.fi>
11 * Tuukka Toivonen <tuukkat76@gmail.com>
12 */
13
14 #ifndef ADP1653_H
15 #define ADP1653_H
16
17 #include <linux/i2c.h>
18 #include <linux/mutex.h>
19 #include <linux/videodev2.h>
20 #include <media/v4l2-ctrls.h>
21 #include <media/v4l2-subdev.h>
22
23 #define ADP1653_NAME "adp1653"
24 #define ADP1653_I2C_ADDR (0x60 >> 1)
25
26 /* Register definitions */
27 #define ADP1653_REG_OUT_SEL 0x00
28 #define ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN 0x01
29 #define ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX 0x0b
30 #define ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN 0x0c
31 #define ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX 0x1f
32 #define ADP1653_REG_OUT_SEL_HPLED_SHIFT 3
33 #define ADP1653_REG_OUT_SEL_ILED_MAX 0x07
34 #define ADP1653_REG_OUT_SEL_ILED_SHIFT 0
35
36 #define ADP1653_REG_CONFIG 0x01
37 #define ADP1653_REG_CONFIG_TMR_CFG (1 << 4)
38 #define ADP1653_REG_CONFIG_TMR_SET_MAX 0x0f
39 #define ADP1653_REG_CONFIG_TMR_SET_SHIFT 0
40
41 #define ADP1653_REG_SW_STROBE 0x02
42 #define ADP1653_REG_SW_STROBE_SW_STROBE (1 << 0)
43
44 #define ADP1653_REG_FAULT 0x03
45 #define ADP1653_REG_FAULT_FLT_SCP (1 << 3)
46 #define ADP1653_REG_FAULT_FLT_OT (1 << 2)
47 #define ADP1653_REG_FAULT_FLT_TMR (1 << 1)
48 #define ADP1653_REG_FAULT_FLT_OV (1 << 0)
49
50 #define ADP1653_INDICATOR_INTENSITY_MIN 0
51 #define ADP1653_INDICATOR_INTENSITY_STEP 2500
52 #define ADP1653_INDICATOR_INTENSITY_MAX \
53 (ADP1653_REG_OUT_SEL_ILED_MAX * ADP1653_INDICATOR_INTENSITY_STEP)
54 #define ADP1653_INDICATOR_INTENSITY_uA_TO_REG(a) \
55 ((a) / ADP1653_INDICATOR_INTENSITY_STEP)
56 #define ADP1653_INDICATOR_INTENSITY_REG_TO_uA(a) \
57 ((a) * ADP1653_INDICATOR_INTENSITY_STEP)
58
59 #define ADP1653_FLASH_INTENSITY_BASE 35
60 #define ADP1653_FLASH_INTENSITY_STEP 15
61 #define ADP1653_FLASH_INTENSITY_MIN \
62 (ADP1653_FLASH_INTENSITY_BASE \
63 + ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN * ADP1653_FLASH_INTENSITY_STEP)
64 #define ADP1653_FLASH_INTENSITY_MAX \
65 (ADP1653_FLASH_INTENSITY_MIN + \
66 (ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX - \
67 ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN + 1) * \
68 ADP1653_FLASH_INTENSITY_STEP)
69
70 #define ADP1653_FLASH_INTENSITY_mA_TO_REG(a) \
71 ((a) < ADP1653_FLASH_INTENSITY_BASE ? 0 : \
72 (((a) - ADP1653_FLASH_INTENSITY_BASE) / ADP1653_FLASH_INTENSITY_STEP))
73 #define ADP1653_FLASH_INTENSITY_REG_TO_mA(a) \
74 ((a) * ADP1653_FLASH_INTENSITY_STEP + ADP1653_FLASH_INTENSITY_BASE)
75
76 #define ADP1653_TORCH_INTENSITY_MIN \
77 (ADP1653_FLASH_INTENSITY_BASE \
78 + ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN * ADP1653_FLASH_INTENSITY_STEP)
79 #define ADP1653_TORCH_INTENSITY_MAX \
80 (ADP1653_TORCH_INTENSITY_MIN + \
81 (ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX - \
82 ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN + 1) * \
83 ADP1653_FLASH_INTENSITY_STEP)
84
85 struct adp1653_platform_data {
86 int (*power)(struct v4l2_subdev *sd, int on);
87
88 u32 max_flash_timeout; /* flash light timeout in us */
89 u32 max_flash_intensity; /* led intensity, flash mode, mA */
90 u32 max_torch_intensity; /* led intensity, torch mode, mA */
91 u32 max_indicator_intensity; /* indicator led intensity, uA */
92
93 struct gpio_desc *enable_gpio; /* for device-tree based boot */
94 };
95
96 #define to_adp1653_flash(sd) container_of(sd, struct adp1653_flash, subdev)
97
98 struct adp1653_flash {
99 struct v4l2_subdev subdev;
100 struct adp1653_platform_data *platform_data;
101
102 struct v4l2_ctrl_handler ctrls;
103 struct v4l2_ctrl *led_mode;
104 struct v4l2_ctrl *flash_timeout;
105 struct v4l2_ctrl *flash_intensity;
106 struct v4l2_ctrl *torch_intensity;
107 struct v4l2_ctrl *indicator_intensity;
108
109 struct mutex power_lock;
110 int power_count;
111 int fault;
112 };
113
114 #endif /* ADP1653_H */
115
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