2013-02-05 17:01:23 +08:00
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/*
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* LP55XX Common Driver Header
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*
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* Copyright (C) 2012 Texas Instruments
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*
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* Author: Milo(Woogyom) Kim <milo.kim@ti.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* Derived from leds-lp5521.c, leds-lp5523.c
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*/
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#ifndef _LEDS_LP55XX_COMMON_H
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#define _LEDS_LP55XX_COMMON_H
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struct lp55xx_led;
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struct lp55xx_chip;
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/*
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* struct lp55xx_chip
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* @cl : I2C communication for access registers
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* @pdata : Platform specific data
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* @lock : Lock for user-space interface
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* @num_leds : Number of registered LEDs
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*/
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struct lp55xx_chip {
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struct i2c_client *cl;
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struct lp55xx_platform_data *pdata;
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struct mutex lock; /* lock for user-space interface */
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int num_leds;
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};
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/*
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* struct lp55xx_led
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* @chan_nr : Channel number
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* @cdev : LED class device
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* @led_current : Current setting at each led channel
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* @max_current : Maximun current at each led channel
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* @brightness_work : Workqueue for brightness control
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* @brightness : Brightness value
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* @chip : The lp55xx chip data
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*/
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struct lp55xx_led {
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int chan_nr;
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struct led_classdev cdev;
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u8 led_current;
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u8 max_current;
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struct work_struct brightness_work;
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u8 brightness;
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struct lp55xx_chip *chip;
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};
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/* register access */
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extern int lp55xx_write(struct lp55xx_chip *chip, u8 reg, u8 val);
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extern int lp55xx_read(struct lp55xx_chip *chip, u8 reg, u8 *val);
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extern int lp55xx_update_bits(struct lp55xx_chip *chip, u8 reg,
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u8 mask, u8 val);
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2013-02-05 17:07:20 +08:00
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/* common device init functions */
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extern int lp55xx_init_device(struct lp55xx_chip *chip);
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2013-02-05 17:01:23 +08:00
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#endif /* _LEDS_LP55XX_COMMON_H */
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