1c93d08faSMilo(Woogyom) Kim /* 2c93d08faSMilo(Woogyom) Kim * LP55XX Common Driver Header 3c93d08faSMilo(Woogyom) Kim * 4c93d08faSMilo(Woogyom) Kim * Copyright (C) 2012 Texas Instruments 5c93d08faSMilo(Woogyom) Kim * 6c93d08faSMilo(Woogyom) Kim * Author: Milo(Woogyom) Kim <milo.kim@ti.com> 7c93d08faSMilo(Woogyom) Kim * 8c93d08faSMilo(Woogyom) Kim * This program is free software; you can redistribute it and/or 9c93d08faSMilo(Woogyom) Kim * modify it under the terms of the GNU General Public License 10c93d08faSMilo(Woogyom) Kim * version 2 as published by the Free Software Foundation. 11c93d08faSMilo(Woogyom) Kim * 12c93d08faSMilo(Woogyom) Kim * Derived from leds-lp5521.c, leds-lp5523.c 13c93d08faSMilo(Woogyom) Kim */ 14c93d08faSMilo(Woogyom) Kim 15c93d08faSMilo(Woogyom) Kim #ifndef _LEDS_LP55XX_COMMON_H 16c93d08faSMilo(Woogyom) Kim #define _LEDS_LP55XX_COMMON_H 17c93d08faSMilo(Woogyom) Kim 18c93d08faSMilo(Woogyom) Kim struct lp55xx_led; 19c93d08faSMilo(Woogyom) Kim struct lp55xx_chip; 20c93d08faSMilo(Woogyom) Kim 21c93d08faSMilo(Woogyom) Kim /* 22c93d08faSMilo(Woogyom) Kim * struct lp55xx_chip 23c93d08faSMilo(Woogyom) Kim * @cl : I2C communication for access registers 24c93d08faSMilo(Woogyom) Kim * @pdata : Platform specific data 25c93d08faSMilo(Woogyom) Kim * @lock : Lock for user-space interface 26c93d08faSMilo(Woogyom) Kim * @num_leds : Number of registered LEDs 27c93d08faSMilo(Woogyom) Kim */ 28c93d08faSMilo(Woogyom) Kim struct lp55xx_chip { 29c93d08faSMilo(Woogyom) Kim struct i2c_client *cl; 30c93d08faSMilo(Woogyom) Kim struct lp55xx_platform_data *pdata; 31c93d08faSMilo(Woogyom) Kim struct mutex lock; /* lock for user-space interface */ 32c93d08faSMilo(Woogyom) Kim int num_leds; 33c93d08faSMilo(Woogyom) Kim }; 34c93d08faSMilo(Woogyom) Kim 35c93d08faSMilo(Woogyom) Kim /* 36c93d08faSMilo(Woogyom) Kim * struct lp55xx_led 37c93d08faSMilo(Woogyom) Kim * @chan_nr : Channel number 38c93d08faSMilo(Woogyom) Kim * @cdev : LED class device 39c93d08faSMilo(Woogyom) Kim * @led_current : Current setting at each led channel 40c93d08faSMilo(Woogyom) Kim * @max_current : Maximun current at each led channel 41c93d08faSMilo(Woogyom) Kim * @brightness_work : Workqueue for brightness control 42c93d08faSMilo(Woogyom) Kim * @brightness : Brightness value 43c93d08faSMilo(Woogyom) Kim * @chip : The lp55xx chip data 44c93d08faSMilo(Woogyom) Kim */ 45c93d08faSMilo(Woogyom) Kim struct lp55xx_led { 46c93d08faSMilo(Woogyom) Kim int chan_nr; 47c93d08faSMilo(Woogyom) Kim struct led_classdev cdev; 48c93d08faSMilo(Woogyom) Kim u8 led_current; 49c93d08faSMilo(Woogyom) Kim u8 max_current; 50c93d08faSMilo(Woogyom) Kim struct work_struct brightness_work; 51c93d08faSMilo(Woogyom) Kim u8 brightness; 52c93d08faSMilo(Woogyom) Kim struct lp55xx_chip *chip; 53c93d08faSMilo(Woogyom) Kim }; 54c93d08faSMilo(Woogyom) Kim 55c93d08faSMilo(Woogyom) Kim /* register access */ 56c93d08faSMilo(Woogyom) Kim extern int lp55xx_write(struct lp55xx_chip *chip, u8 reg, u8 val); 57c93d08faSMilo(Woogyom) Kim extern int lp55xx_read(struct lp55xx_chip *chip, u8 reg, u8 *val); 58c93d08faSMilo(Woogyom) Kim extern int lp55xx_update_bits(struct lp55xx_chip *chip, u8 reg, 59c93d08faSMilo(Woogyom) Kim u8 mask, u8 val); 60c93d08faSMilo(Woogyom) Kim 61*a85908ddSMilo(Woogyom) Kim /* common device init functions */ 62*a85908ddSMilo(Woogyom) Kim extern int lp55xx_init_device(struct lp55xx_chip *chip); 63*a85908ddSMilo(Woogyom) Kim 64c93d08faSMilo(Woogyom) Kim #endif /* _LEDS_LP55XX_COMMON_H */ 65