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