aat2870.h
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/*
* linux/include/linux/mfd/aat2870.h
*
* Copyright (c) 2011, NVIDIA Corporation.
* Author: Jin Park <jinyoungp@nvidia.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
*/
#ifndef __LINUX_MFD_AAT2870_H
#define __LINUX_MFD_AAT2870_H
#include <linux/debugfs.h>
#include <linux/i2c.h>
/* Register offsets */
#define AAT2870_BL_CH_EN 0x00
#define AAT2870_BLM 0x01
#define AAT2870_BLS 0x02
#define AAT2870_BL1 0x03
#define AAT2870_BL2 0x04
#define AAT2870_BL3 0x05
#define AAT2870_BL4 0x06
#define AAT2870_BL5 0x07
#define AAT2870_BL6 0x08
#define AAT2870_BL7 0x09
#define AAT2870_BL8 0x0A
#define AAT2870_FLR 0x0B
#define AAT2870_FM 0x0C
#define AAT2870_FS 0x0D
#define AAT2870_ALS_CFG0 0x0E
#define AAT2870_ALS_CFG1 0x0F
#define AAT2870_ALS_CFG2 0x10
#define AAT2870_AMB 0x11
#define AAT2870_ALS0 0x12
#define AAT2870_ALS1 0x13
#define AAT2870_ALS2 0x14
#define AAT2870_ALS3 0x15
#define AAT2870_ALS4 0x16
#define AAT2870_ALS5 0x17
#define AAT2870_ALS6 0x18
#define AAT2870_ALS7 0x19
#define AAT2870_ALS8 0x1A
#define AAT2870_ALS9 0x1B
#define AAT2870_ALSA 0x1C
#define AAT2870_ALSB 0x1D
#define AAT2870_ALSC 0x1E
#define AAT2870_ALSD 0x1F
#define AAT2870_ALSE 0x20
#define AAT2870_ALSF 0x21
#define AAT2870_SUB_SET 0x22
#define AAT2870_SUB_CTRL 0x23
#define AAT2870_LDO_AB 0x24
#define AAT2870_LDO_CD 0x25
#define AAT2870_LDO_EN 0x26
#define AAT2870_REG_NUM 0x27
/* Device IDs */
enum aat2870_id {
AAT2870_ID_BL,
AAT2870_ID_LDOA,
AAT2870_ID_LDOB,
AAT2870_ID_LDOC,
AAT2870_ID_LDOD
};
/* Backlight channels */
#define AAT2870_BL_CH1 0x01
#define AAT2870_BL_CH2 0x02
#define AAT2870_BL_CH3 0x04
#define AAT2870_BL_CH4 0x08
#define AAT2870_BL_CH5 0x10
#define AAT2870_BL_CH6 0x20
#define AAT2870_BL_CH7 0x40
#define AAT2870_BL_CH8 0x80
#define AAT2870_BL_CH_ALL 0xFF
/* Backlight current magnitude (mA) */
enum aat2870_current {
AAT2870_CURRENT_0_45 = 1,
AAT2870_CURRENT_0_90,
AAT2870_CURRENT_1_80,
AAT2870_CURRENT_2_70,
AAT2870_CURRENT_3_60,
AAT2870_CURRENT_4_50,
AAT2870_CURRENT_5_40,
AAT2870_CURRENT_6_30,
AAT2870_CURRENT_7_20,
AAT2870_CURRENT_8_10,
AAT2870_CURRENT_9_00,
AAT2870_CURRENT_9_90,
AAT2870_CURRENT_10_8,
AAT2870_CURRENT_11_7,
AAT2870_CURRENT_12_6,
AAT2870_CURRENT_13_5,
AAT2870_CURRENT_14_4,
AAT2870_CURRENT_15_3,
AAT2870_CURRENT_16_2,
AAT2870_CURRENT_17_1,
AAT2870_CURRENT_18_0,
AAT2870_CURRENT_18_9,
AAT2870_CURRENT_19_8,
AAT2870_CURRENT_20_7,
AAT2870_CURRENT_21_6,
AAT2870_CURRENT_22_5,
AAT2870_CURRENT_23_4,
AAT2870_CURRENT_24_3,
AAT2870_CURRENT_25_2,
AAT2870_CURRENT_26_1,
AAT2870_CURRENT_27_0,
AAT2870_CURRENT_27_9
};
struct aat2870_register {
bool readable;
bool writeable;
u8 value;
};
struct aat2870_data {
struct device *dev;
struct i2c_client *client;
struct mutex io_lock;
struct aat2870_register *reg_cache; /* register cache */
int en_pin; /* enable GPIO pin (if < 0, ignore this value) */
bool is_enable;
/* init and uninit for platform specified */
int (*init)(struct aat2870_data *aat2870);
void (*uninit)(struct aat2870_data *aat2870);
/* i2c io funcntions */
int (*read)(struct aat2870_data *aat2870, u8 addr, u8 *val);
int (*write)(struct aat2870_data *aat2870, u8 addr, u8 val);
int (*update)(struct aat2870_data *aat2870, u8 addr, u8 mask, u8 val);
/* for debugfs */
struct dentry *dentry_root;
struct dentry *dentry_reg;
};
struct aat2870_subdev_info {
int id;
const char *name;
void *platform_data;
};
struct aat2870_platform_data {
int en_pin; /* enable GPIO pin (if < 0, ignore this value) */
struct aat2870_subdev_info *subdevs;
int num_subdevs;
/* init and uninit for platform specified */
int (*init)(struct aat2870_data *aat2870);
void (*uninit)(struct aat2870_data *aat2870);
};
struct aat2870_bl_platform_data {
/* backlight channels, default is AAT2870_BL_CH_ALL */
int channels;
/* backlight current magnitude, default is AAT2870_CURRENT_27_9 */
int max_current;
/* maximum brightness, default is 255 */
int max_brightness;
};
#endif /* __LINUX_MFD_AAT2870_H */