projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| 48068d5d MWK |
21 | /* |
| 22 | * struct lp55xx_reg | |
| 23 | * @addr : Register address | |
| 24 | * @val : Register value | |
| 25 | */ | |
| 26 | struct lp55xx_reg { | |
| 27 | u8 addr; | |
| 28 | u8 val; | |
| 29 | }; | |
| 30 | ||
| 31 | /* | |
| 32 | * struct lp55xx_device_config | |
| 33 | * @reset : Chip specific reset command | |
| e3a700d8 | 34 | * @enable : Chip specific enable command |
| ffbdccdb | 35 | * @post_init_device : Chip specific initialization code |
| 48068d5d MWK |
36 | */ |
| 37 | struct lp55xx_device_config { | |
| 38 | const struct lp55xx_reg reset; | |
| e3a700d8 | 39 | const struct lp55xx_reg enable; |
| ffbdccdb MWK |
40 | |
| 41 | /* define if the device has specific initialization process */ | |
| 42 | int (*post_init_device) (struct lp55xx_chip *chip); | |
| 48068d5d MWK |
43 | }; |
| 44 | ||
| c93d08fa MWK |
45 | /* |
| 46 | * struct lp55xx_chip | |
| 47 | * @cl : I2C communication for access registers | |
| 48 | * @pdata : Platform specific data | |
| 49 | * @lock : Lock for user-space interface | |
| 50 | * @num_leds : Number of registered LEDs | |
| 48068d5d | 51 | * @cfg : Device specific configuration data |
| c93d08fa MWK |
52 | */ |
| 53 | struct lp55xx_chip { | |
| 54 | struct i2c_client *cl; | |
| 55 | struct lp55xx_platform_data *pdata; | |
| 56 | struct mutex lock; /* lock for user-space interface */ | |
| 57 | int num_leds; | |
| 48068d5d | 58 | struct lp55xx_device_config *cfg; |
| c93d08fa MWK |
59 | }; |
| 60 | ||
| 61 | /* | |
| 62 | * struct lp55xx_led | |
| 63 | * @chan_nr : Channel number | |
| 64 | * @cdev : LED class device | |
| 65 | * @led_current : Current setting at each led channel | |
| 66 | * @max_current : Maximun current at each led channel | |
| 67 | * @brightness_work : Workqueue for brightness control | |
| 68 | * @brightness : Brightness value | |
| 69 | * @chip : The lp55xx chip data | |
| 70 | */ | |
| 71 | struct lp55xx_led { | |
| 72 | int chan_nr; | |
| 73 | struct led_classdev cdev; | |
| 74 | u8 led_current; | |
| 75 | u8 max_current; | |
| 76 | struct work_struct brightness_work; | |
| 77 | u8 brightness; | |
| 78 | struct lp55xx_chip *chip; | |
| 79 | }; | |
| 80 | ||
| 81 | /* register access */ | |
| 82 | extern int lp55xx_write(struct lp55xx_chip *chip, u8 reg, u8 val); | |
| 83 | extern int lp55xx_read(struct lp55xx_chip *chip, u8 reg, u8 *val); | |
| 84 | extern int lp55xx_update_bits(struct lp55xx_chip *chip, u8 reg, | |
| 85 | u8 mask, u8 val); | |
| 86 | ||
| a85908dd MWK |
87 | /* common device init functions */ |
| 88 | extern int lp55xx_init_device(struct lp55xx_chip *chip); | |
| 89 | ||
| c93d08fa | 90 | #endif /* _LEDS_LP55XX_COMMON_H */ |