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