linux-imx

/*

 * lp5523.c - LP5523, LP55231 LED Driver

 *

 * Copyright (C) 2010 Nokia Corporation

 * Copyright (C) 2012 Texas Instruments

 *

 * Contact: Samu Onkalo <samu.p.onkalo@nokia.com>

 *          Milo(Woogyom) Kim <milo.kim@ti.com>

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA

 * 02110-1301 USA

 */

​

#include <linux/delay.h>

#include <linux/firmware.h>

#include <linux/i2c.h>

#include <linux/leds.h>

#include <linux/module.h>

#include <linux/mutex.h>

#include <linux/of.h>

#include <linux/platform_data/leds-lp55xx.h>

#include <linux/slab.h>

​

#include "leds-lp55xx-common.h"

​

#define LP5523_PROGRAM_LENGTH       32  /* bytes */

/* Memory is used like this:

   0x00 engine 1 program

   0x10 engine 2 program

   0x20 engine 3 program

   0x30 engine 1 muxing info

   0x40 engine 2 muxing info

   0x50 engine 3 muxing info

*/

#define LP5523_MAX_LEDS         9

​

/* Registers */

#define LP5523_REG_ENABLE       0x00

#define LP5523_REG_OP_MODE      0x01

#define LP5523_REG_ENABLE_LEDS_MSB  0x04

#define LP5523_REG_ENABLE_LEDS_LSB  0x05

#define LP5523_REG_LED_CTRL_BASE    0x06

#define LP5523_REG_LED_PWM_BASE     0x16

#define LP5523_REG_LED_CURRENT_BASE 0x26

#define LP5523_REG_CONFIG       0x36

#define LP5523_REG_STATUS       0x3A

#define LP5523_REG_RESET        0x3D

#define LP5523_REG_LED_TEST_CTRL    0x41

#define LP5523_REG_LED_TEST_ADC     0x42

#define LP5523_REG_MASTER_FADER_BASE    0x48

#define LP5523_REG_CH1_PROG_START   0x4C

#define LP5523_REG_CH2_PROG_START   0x4D