xref: /openbmc/linux/include/media/i2c/lm3646.h (revision d2912cb1)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * include/media/i2c/lm3646.h
4  *
5  * Copyright (C) 2014 Texas Instruments
6  *
7  * Contact: Daniel Jeong <gshark.jeong@gmail.com>
8  *			Ldd-Mlp <ldd-mlp@list.ti.com>
9  */
10 
11 #ifndef __LM3646_H__
12 #define __LM3646_H__
13 
14 #include <media/v4l2-subdev.h>
15 
16 #define LM3646_NAME	"lm3646"
17 #define LM3646_I2C_ADDR_REV1	(0x67)
18 #define LM3646_I2C_ADDR_REV0	(0x63)
19 
20 /*  TOTAL FLASH Brightness Max
21  *	min 93350uA, step 93750uA, max 1499600uA
22  */
23 #define LM3646_TOTAL_FLASH_BRT_MIN 93350
24 #define LM3646_TOTAL_FLASH_BRT_STEP 93750
25 #define LM3646_TOTAL_FLASH_BRT_MAX 1499600
26 #define LM3646_TOTAL_FLASH_BRT_uA_TO_REG(a)	\
27 	((a) < LM3646_TOTAL_FLASH_BRT_MIN ? 0 :	\
28 	 ((((a) - LM3646_TOTAL_FLASH_BRT_MIN) / LM3646_TOTAL_FLASH_BRT_STEP)))
29 
30 /*  TOTAL TORCH Brightness Max
31  *	min 23040uA, step 23430uA, max 187100uA
32  */
33 #define LM3646_TOTAL_TORCH_BRT_MIN 23040
34 #define LM3646_TOTAL_TORCH_BRT_STEP 23430
35 #define LM3646_TOTAL_TORCH_BRT_MAX 187100
36 #define LM3646_TOTAL_TORCH_BRT_uA_TO_REG(a)	\
37 	((a) < LM3646_TOTAL_TORCH_BRT_MIN ? 0 :	\
38 	 ((((a) - LM3646_TOTAL_TORCH_BRT_MIN) / LM3646_TOTAL_TORCH_BRT_STEP)))
39 
40 /*  LED1 FLASH Brightness
41  *	min 23040uA, step 11718uA, max 1499600uA
42  */
43 #define LM3646_LED1_FLASH_BRT_MIN 23040
44 #define LM3646_LED1_FLASH_BRT_STEP 11718
45 #define LM3646_LED1_FLASH_BRT_MAX 1499600
46 #define LM3646_LED1_FLASH_BRT_uA_TO_REG(a)	\
47 	((a) <= LM3646_LED1_FLASH_BRT_MIN ? 0 :	\
48 	 ((((a) - LM3646_LED1_FLASH_BRT_MIN) / LM3646_LED1_FLASH_BRT_STEP))+1)
49 
50 /*  LED1 TORCH Brightness
51  *	min 2530uA, step 1460uA, max 187100uA
52  */
53 #define LM3646_LED1_TORCH_BRT_MIN 2530
54 #define LM3646_LED1_TORCH_BRT_STEP 1460
55 #define LM3646_LED1_TORCH_BRT_MAX 187100
56 #define LM3646_LED1_TORCH_BRT_uA_TO_REG(a)	\
57 	((a) <= LM3646_LED1_TORCH_BRT_MIN ? 0 :	\
58 	 ((((a) - LM3646_LED1_TORCH_BRT_MIN) / LM3646_LED1_TORCH_BRT_STEP))+1)
59 
60 /*  FLASH TIMEOUT DURATION
61  *	min 50ms, step 50ms, max 400ms
62  */
63 #define LM3646_FLASH_TOUT_MIN 50
64 #define LM3646_FLASH_TOUT_STEP 50
65 #define LM3646_FLASH_TOUT_MAX 400
66 #define LM3646_FLASH_TOUT_ms_TO_REG(a)	\
67 	((a) <= LM3646_FLASH_TOUT_MIN ? 0 :	\
68 	 (((a) - LM3646_FLASH_TOUT_MIN) / LM3646_FLASH_TOUT_STEP))
69 
70 /* struct lm3646_platform_data
71  *
72  * @flash_timeout: flash timeout
73  * @led1_flash_brt: led1 flash mode brightness, uA
74  * @led1_torch_brt: led1 torch mode brightness, uA
75  */
76 struct lm3646_platform_data {
77 
78 	u32 flash_timeout;
79 
80 	u32 led1_flash_brt;
81 	u32 led1_torch_brt;
82 };
83 
84 #endif /* __LM3646_H__ */
85