1 /*
2  * Copyright (C) 2011 ST-Ericsson SA
3  * Written on behalf of Linaro for ST-Ericsson
4  *
5  * Author: Linus Walleij <linus.walleij@linaro.org>
6  *
7  * License terms: GNU General Public License (GPL) version 2
8  */
9 #ifndef MFD_TPS6105X_H
10 #define MFD_TPS6105X_H
11 
12 #include <linux/i2c.h>
13 #include <linux/regulator/machine.h>
14 
15 /*
16  * Register definitions to all subdrivers
17  */
18 #define TPS6105X_REG_0			0x00
19 #define TPS6105X_REG0_MODE_SHIFT	6
20 #define TPS6105X_REG0_MODE_MASK		(0x03<<6)
21 /* These defines for both reg0 and reg1 */
22 #define TPS6105X_REG0_MODE_SHUTDOWN	0x00
23 #define TPS6105X_REG0_MODE_TORCH	0x01
24 #define TPS6105X_REG0_MODE_TORCH_FLASH	0x02
25 #define TPS6105X_REG0_MODE_VOLTAGE	0x03
26 #define TPS6105X_REG0_VOLTAGE_SHIFT	4
27 #define TPS6105X_REG0_VOLTAGE_MASK	(3<<4)
28 #define TPS6105X_REG0_VOLTAGE_450	0
29 #define TPS6105X_REG0_VOLTAGE_500	1
30 #define TPS6105X_REG0_VOLTAGE_525	2
31 #define TPS6105X_REG0_VOLTAGE_500_2	3
32 #define TPS6105X_REG0_DIMMING_SHIFT	3
33 #define TPS6105X_REG0_TORCHC_SHIFT	0
34 #define TPS6105X_REG0_TORCHC_MASK	(7<<0)
35 #define TPS6105X_REG0_TORCHC_0		0x00
36 #define TPS6105X_REG0_TORCHC_50		0x01
37 #define TPS6105X_REG0_TORCHC_75		0x02
38 #define TPS6105X_REG0_TORCHC_100	0x03
39 #define TPS6105X_REG0_TORCHC_150	0x04
40 #define TPS6105X_REG0_TORCHC_200	0x05
41 #define TPS6105X_REG0_TORCHC_250_400	0x06
42 #define TPS6105X_REG0_TORCHC_250_500	0x07
43 #define TPS6105X_REG_1			0x01
44 #define TPS6105X_REG1_MODE_SHIFT	6
45 #define TPS6105X_REG1_MODE_MASK		(0x03<<6)
46 #define TPS6105X_REG1_MODE_SHUTDOWN	0x00
47 #define TPS6105X_REG1_MODE_TORCH	0x01
48 #define TPS6105X_REG1_MODE_TORCH_FLASH	0x02
49 #define TPS6105X_REG1_MODE_VOLTAGE	0x03
50 #define TPS6105X_REG_2			0x02
51 #define TPS6105X_REG_3			0x03
52 
53 /**
54  * enum tps6105x_mode - desired mode for the TPS6105x
55  * @TPS6105X_MODE_SHUTDOWN: this instance is inactive, not used for anything
56  * @TPS61905X_MODE_TORCH: this instance is used as a LED, usually a while
57  *	LED, for example as backlight or flashlight. If this is set, the
58  *	TPS6105X will register to the LED framework
59  * @TPS6105X_MODE_TORCH_FLASH: this instance is used as a flashgun, usually
60  *	in a camera
61  * @TPS6105X_MODE_VOLTAGE: this instance is used as a voltage regulator and
62  *	will register to the regulator framework
63  */
64 enum tps6105x_mode {
65 	TPS6105X_MODE_SHUTDOWN,
66 	TPS6105X_MODE_TORCH,
67 	TPS6105X_MODE_TORCH_FLASH,
68 	TPS6105X_MODE_VOLTAGE,
69 };
70 
71 /**
72  * struct tps6105x_platform_data - TPS61905x platform data
73  * @mode: what mode this instance shall be operated in,
74  *	this is not selectable at runtime
75  * @regulator_data: initialization data for the voltage
76  *	regulator if used as a voltage source
77  */
78 struct tps6105x_platform_data {
79 	enum tps6105x_mode mode;
80 	struct regulator_init_data *regulator_data;
81 };
82 
83 /**
84  * struct tps6105x - state holder for the TPS6105x drivers
85  * @mutex: mutex to serialize I2C accesses
86  * @i2c_client: corresponding I2C client
87  * @regulator: regulator device if used in voltage mode
88  */
89 struct tps6105x {
90 	struct tps6105x_platform_data *pdata;
91 	struct mutex		lock;
92 	struct i2c_client	*client;
93 	struct regulator_dev	*regulator;
94 };
95 
96 extern int tps6105x_set(struct tps6105x *tps6105x, u8 reg, u8 value);
97 extern int tps6105x_get(struct tps6105x *tps6105x, u8 reg, u8 *buf);
98 extern int tps6105x_mask_and_set(struct tps6105x *tps6105x, u8 reg,
99 				 u8 bitmask, u8 bitvalues);
100 
101 #endif
102