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c93d08fa MWK |
1 | /* |
2 | * LP55XX Common Driver Header | |
3 | * | |
4 | * Copyright (C) 2012 Texas Instruments | |
5 | * | |
6 | * Author: Milo(Woogyom) Kim <milo.kim@ti.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * version 2 as published by the Free Software Foundation. | |
11 | * | |
12 | * Derived from leds-lp5521.c, leds-lp5523.c | |
13 | */ | |
14 | ||
15 | #ifndef _LEDS_LP55XX_COMMON_H | |
16 | #define _LEDS_LP55XX_COMMON_H | |
17 | ||
18 | struct lp55xx_led; | |
19 | struct lp55xx_chip; | |
20 | ||
21 | /* | |
22 | * struct lp55xx_chip | |
23 | * @cl : I2C communication for access registers | |
24 | * @pdata : Platform specific data | |
25 | * @lock : Lock for user-space interface | |
26 | * @num_leds : Number of registered LEDs | |
27 | */ | |
28 | struct lp55xx_chip { | |
29 | struct i2c_client *cl; | |
30 | struct lp55xx_platform_data *pdata; | |
31 | struct mutex lock; /* lock for user-space interface */ | |
32 | int num_leds; | |
33 | }; | |
34 | ||
35 | /* | |
36 | * struct lp55xx_led | |
37 | * @chan_nr : Channel number | |
38 | * @cdev : LED class device | |
39 | * @led_current : Current setting at each led channel | |
40 | * @max_current : Maximun current at each led channel | |
41 | * @brightness_work : Workqueue for brightness control | |
42 | * @brightness : Brightness value | |
43 | * @chip : The lp55xx chip data | |
44 | */ | |
45 | struct lp55xx_led { | |
46 | int chan_nr; | |
47 | struct led_classdev cdev; | |
48 | u8 led_current; | |
49 | u8 max_current; | |
50 | struct work_struct brightness_work; | |
51 | u8 brightness; | |
52 | struct lp55xx_chip *chip; | |
53 | }; | |
54 | ||
55 | /* register access */ | |
56 | extern int lp55xx_write(struct lp55xx_chip *chip, u8 reg, u8 val); | |
57 | extern int lp55xx_read(struct lp55xx_chip *chip, u8 reg, u8 *val); | |
58 | extern int lp55xx_update_bits(struct lp55xx_chip *chip, u8 reg, | |
59 | u8 mask, u8 val); | |
60 | ||
61 | #endif /* _LEDS_LP55XX_COMMON_H */ |