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
34 * @enable : Chip specific enable command
35 * @post_init_device : Chip specific initialization code
37 struct lp55xx_device_config {
38 const struct lp55xx_reg reset;
39 const struct lp55xx_reg enable;
41 /* define if the device has specific initialization process */
42 int (*post_init_device) (struct lp55xx_chip *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
51 * @cfg : Device specific configuration data
54 struct i2c_client *cl;
55 struct lp55xx_platform_data *pdata;
56 struct mutex lock; /* lock for user-space interface */
58 struct lp55xx_device_config *cfg;
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
73 struct led_classdev cdev;
76 struct work_struct brightness_work;
78 struct lp55xx_chip *chip;
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,
87 /* common device init functions */
88 extern int lp55xx_init_device(struct lp55xx_chip *chip);
90 #endif /* _LEDS_LP55XX_COMMON_H */