2 * LP55XX Common Driver Header
4 * Copyright (C) 2012 Texas Instruments
6 * Author: Milo(Woogyom) Kim <milo.kim@ti.com>
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.
12 * Derived from leds-lp5521.c, leds-lp5523.c
15 #ifndef _LEDS_LP55XX_COMMON_H
16 #define _LEDS_LP55XX_COMMON_H
23 * @addr : Register address
24 * @val : Register value
32 * struct lp55xx_device_config
33 * @reset : Chip specific reset command
35 struct lp55xx_device_config {
36 const struct lp55xx_reg reset;
41 * @cl : I2C communication for access registers
42 * @pdata : Platform specific data
43 * @lock : Lock for user-space interface
44 * @num_leds : Number of registered LEDs
45 * @cfg : Device specific configuration data
48 struct i2c_client *cl;
49 struct lp55xx_platform_data *pdata;
50 struct mutex lock; /* lock for user-space interface */
52 struct lp55xx_device_config *cfg;
57 * @chan_nr : Channel number
58 * @cdev : LED class device
59 * @led_current : Current setting at each led channel
60 * @max_current : Maximun current at each led channel
61 * @brightness_work : Workqueue for brightness control
62 * @brightness : Brightness value
63 * @chip : The lp55xx chip data
67 struct led_classdev cdev;
70 struct work_struct brightness_work;
72 struct lp55xx_chip *chip;
76 extern int lp55xx_write(struct lp55xx_chip *chip, u8 reg, u8 val);
77 extern int lp55xx_read(struct lp55xx_chip *chip, u8 reg, u8 *val);
78 extern int lp55xx_update_bits(struct lp55xx_chip *chip, u8 reg,
81 /* common device init functions */
82 extern int lp55xx_init_device(struct lp55xx_chip *chip);
84 #endif /* _LEDS_LP55XX_COMMON_H */