linux-imx

/* Copyright (c) 2015, Sony Mobile Communications, AB.

 *

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

 * it under the terms of the GNU General Public License version 2 and

 * only 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.

 */

​

#include <linux/kernel.h>

#include <linux/backlight.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/regmap.h>

​

/* From DT binding */

#define PM8941_WLED_DEFAULT_BRIGHTNESS      2048

​

#define PM8941_WLED_REG_VAL_BASE        0x40

#define  PM8941_WLED_REG_VAL_MAX        0xFFF

​

#define PM8941_WLED_REG_MOD_EN          0x46

#define  PM8941_WLED_REG_MOD_EN_BIT     BIT(7)

#define  PM8941_WLED_REG_MOD_EN_MASK        BIT(7)

​

#define PM8941_WLED_REG_SYNC            0x47

#define  PM8941_WLED_REG_SYNC_MASK      0x07

#define  PM8941_WLED_REG_SYNC_LED1      BIT(0)

#define  PM8941_WLED_REG_SYNC_LED2      BIT(1)

#define  PM8941_WLED_REG_SYNC_LED3      BIT(2)

#define  PM8941_WLED_REG_SYNC_ALL       0x07

#define  PM8941_WLED_REG_SYNC_CLEAR     0x00

​

#define PM8941_WLED_REG_FREQ            0x4c

#define  PM8941_WLED_REG_FREQ_MASK      0x0f

​

#define PM8941_WLED_REG_OVP         0x4d

#define  PM8941_WLED_REG_OVP_MASK       0x03

​

#define PM8941_WLED_REG_BOOST           0x4e

#define  PM8941_WLED_REG_BOOST_MASK     0x07

​

#define PM8941_WLED_REG_SINK            0x4f

#define  PM8941_WLED_REG_SINK_MASK      0xe0

#define  PM8941_WLED_REG_SINK_SHFT      0x05

​

/* Per-'string' registers below */

#define PM8941_WLED_REG_STR_OFFSET      0x10

​

#define PM8941_WLED_REG_STR_MOD_EN_BASE     0x60

#define  PM8941_WLED_REG_STR_MOD_MASK       BIT(7)

#define  PM8941_WLED_REG_STR_MOD_EN     BIT(7)

​

#define PM8941_WLED_REG_STR_SCALE_BASE      0x62

#define  PM8941_WLED_REG_STR_SCALE_MASK     0x1f

​

#define PM8941_WLED_REG_STR_MOD_SRC_BASE    0x63

#define  PM8941_WLED_REG_STR_MOD_SRC_MASK   0x01

#define  PM8941_WLED_REG_STR_MOD_SRC_INT    0x00