1 /*
2  * include/media/i2c/lm3646.h
3  *
4  * Copyright (C) 2014 Texas Instruments
5  *
6  * Contact: Daniel Jeong <gshark.jeong@gmail.com>
7  *			Ldd-Mlp <ldd-mlp@list.ti.com>
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * version 2 as published by the Free Software Foundation.
12  */
13 
14 #ifndef __LM3646_H__
15 #define __LM3646_H__
16 
17 #include <media/v4l2-subdev.h>
18 
19 #define LM3646_NAME	"lm3646"
20 #define LM3646_I2C_ADDR_REV1	(0x67)
21 #define LM3646_I2C_ADDR_REV0	(0x63)
22 
23 /*  TOTAL FLASH Brightness Max
24  *	min 93350uA, step 93750uA, max 1499600uA
25  */
26 #define LM3646_TOTAL_FLASH_BRT_MIN 93350
27 #define LM3646_TOTAL_FLASH_BRT_STEP 93750
28 #define LM3646_TOTAL_FLASH_BRT_MAX 1499600
29 #define LM3646_TOTAL_FLASH_BRT_uA_TO_REG(a)	\
30 	((a) < LM3646_TOTAL_FLASH_BRT_MIN ? 0 :	\
31 	 ((((a) - LM3646_TOTAL_FLASH_BRT_MIN) / LM3646_TOTAL_FLASH_BRT_STEP)))
32 
33 /*  TOTAL TORCH Brightness Max
34  *	min 23040uA, step 23430uA, max 187100uA
35  */
36 #define LM3646_TOTAL_TORCH_BRT_MIN 23040
37 #define LM3646_TOTAL_TORCH_BRT_STEP 23430
38 #define LM3646_TOTAL_TORCH_BRT_MAX 187100
39 #define LM3646_TOTAL_TORCH_BRT_uA_TO_REG(a)	\
40 	((a) < LM3646_TOTAL_TORCH_BRT_MIN ? 0 :	\
41 	 ((((a) - LM3646_TOTAL_TORCH_BRT_MIN) / LM3646_TOTAL_TORCH_BRT_STEP)))
42 
43 /*  LED1 FLASH Brightness
44  *	min 23040uA, step 11718uA, max 1499600uA
45  */
46 #define LM3646_LED1_FLASH_BRT_MIN 23040
47 #define LM3646_LED1_FLASH_BRT_STEP 11718
48 #define LM3646_LED1_FLASH_BRT_MAX 1499600
49 #define LM3646_LED1_FLASH_BRT_uA_TO_REG(a)	\
50 	((a) <= LM3646_LED1_FLASH_BRT_MIN ? 0 :	\
51 	 ((((a) - LM3646_LED1_FLASH_BRT_MIN) / LM3646_LED1_FLASH_BRT_STEP))+1)
52 
53 /*  LED1 TORCH Brightness
54  *	min 2530uA, step 1460uA, max 187100uA
55  */
56 #define LM3646_LED1_TORCH_BRT_MIN 2530
57 #define LM3646_LED1_TORCH_BRT_STEP 1460
58 #define LM3646_LED1_TORCH_BRT_MAX 187100
59 #define LM3646_LED1_TORCH_BRT_uA_TO_REG(a)	\
60 	((a) <= LM3646_LED1_TORCH_BRT_MIN ? 0 :	\
61 	 ((((a) - LM3646_LED1_TORCH_BRT_MIN) / LM3646_LED1_TORCH_BRT_STEP))+1)
62 
63 /*  FLASH TIMEOUT DURATION
64  *	min 50ms, step 50ms, max 400ms
65  */
66 #define LM3646_FLASH_TOUT_MIN 50
67 #define LM3646_FLASH_TOUT_STEP 50
68 #define LM3646_FLASH_TOUT_MAX 400
69 #define LM3646_FLASH_TOUT_ms_TO_REG(a)	\
70 	((a) <= LM3646_FLASH_TOUT_MIN ? 0 :	\
71 	 (((a) - LM3646_FLASH_TOUT_MIN) / LM3646_FLASH_TOUT_STEP))
72 
73 /* struct lm3646_platform_data
74  *
75  * @flash_timeout: flash timeout
76  * @led1_flash_brt: led1 flash mode brightness, uA
77  * @led1_torch_brt: led1 torch mode brightness, uA
78  */
79 struct lm3646_platform_data {
80 
81 	u32 flash_timeout;
82 
83 	u32 led1_flash_brt;
84 	u32 led1_torch_brt;
85 };
86 
87 #endif /* __LM3646_H__ */
88