/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* linux/include/linux/mfd/aat2870.h
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*
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* Copyright (c) 2011, NVIDIA Corporation.
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* Author: Jin Park <jinyoungp@nvidia.com>
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*/
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#ifndef __LINUX_MFD_AAT2870_H
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#define __LINUX_MFD_AAT2870_H
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#include <linux/debugfs.h>
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#include <linux/i2c.h>
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/* Register offsets */
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#define AAT2870_BL_CH_EN 0x00
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#define AAT2870_BLM 0x01
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#define AAT2870_BLS 0x02
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#define AAT2870_BL1 0x03
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#define AAT2870_BL2 0x04
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#define AAT2870_BL3 0x05
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#define AAT2870_BL4 0x06
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#define AAT2870_BL5 0x07
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#define AAT2870_BL6 0x08
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#define AAT2870_BL7 0x09
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#define AAT2870_BL8 0x0A
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#define AAT2870_FLR 0x0B
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#define AAT2870_FM 0x0C
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#define AAT2870_FS 0x0D
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#define AAT2870_ALS_CFG0 0x0E
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#define AAT2870_ALS_CFG1 0x0F
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#define AAT2870_ALS_CFG2 0x10
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#define AAT2870_AMB 0x11
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#define AAT2870_ALS0 0x12
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#define AAT2870_ALS1 0x13
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#define AAT2870_ALS2 0x14
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#define AAT2870_ALS3 0x15
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#define AAT2870_ALS4 0x16
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#define AAT2870_ALS5 0x17
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#define AAT2870_ALS6 0x18
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#define AAT2870_ALS7 0x19
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#define AAT2870_ALS8 0x1A
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#define AAT2870_ALS9 0x1B
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#define AAT2870_ALSA 0x1C
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#define AAT2870_ALSB 0x1D
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#define AAT2870_ALSC 0x1E
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#define AAT2870_ALSD 0x1F
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#define AAT2870_ALSE 0x20
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#define AAT2870_ALSF 0x21
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#define AAT2870_SUB_SET 0x22
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#define AAT2870_SUB_CTRL 0x23
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#define AAT2870_LDO_AB 0x24
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#define AAT2870_LDO_CD 0x25
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#define AAT2870_LDO_EN 0x26
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#define AAT2870_REG_NUM 0x27
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/* Device IDs */
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enum aat2870_id {
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AAT2870_ID_BL,
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AAT2870_ID_LDOA,
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AAT2870_ID_LDOB,
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AAT2870_ID_LDOC,
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AAT2870_ID_LDOD
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};
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/* Backlight channels */
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#define AAT2870_BL_CH1 0x01
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#define AAT2870_BL_CH2 0x02
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#define AAT2870_BL_CH3 0x04
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#define AAT2870_BL_CH4 0x08
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#define AAT2870_BL_CH5 0x10
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#define AAT2870_BL_CH6 0x20
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#define AAT2870_BL_CH7 0x40
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#define AAT2870_BL_CH8 0x80
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#define AAT2870_BL_CH_ALL 0xFF
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/* Backlight current magnitude (mA) */
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enum aat2870_current {
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AAT2870_CURRENT_0_45 = 1,
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AAT2870_CURRENT_0_90,
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AAT2870_CURRENT_1_80,
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AAT2870_CURRENT_2_70,
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AAT2870_CURRENT_3_60,
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AAT2870_CURRENT_4_50,
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AAT2870_CURRENT_5_40,
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AAT2870_CURRENT_6_30,
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AAT2870_CURRENT_7_20,
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AAT2870_CURRENT_8_10,
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AAT2870_CURRENT_9_00,
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AAT2870_CURRENT_9_90,
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AAT2870_CURRENT_10_8,
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AAT2870_CURRENT_11_7,
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AAT2870_CURRENT_12_6,
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AAT2870_CURRENT_13_5,
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AAT2870_CURRENT_14_4,
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AAT2870_CURRENT_15_3,
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AAT2870_CURRENT_16_2,
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AAT2870_CURRENT_17_1,
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AAT2870_CURRENT_18_0,
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AAT2870_CURRENT_18_9,
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AAT2870_CURRENT_19_8,
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AAT2870_CURRENT_20_7,
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AAT2870_CURRENT_21_6,
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AAT2870_CURRENT_22_5,
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AAT2870_CURRENT_23_4,
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AAT2870_CURRENT_24_3,
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AAT2870_CURRENT_25_2,
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AAT2870_CURRENT_26_1,
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AAT2870_CURRENT_27_0,
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AAT2870_CURRENT_27_9
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};
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struct aat2870_register {
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bool readable;
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bool writeable;
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u8 value;
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};
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struct aat2870_data {
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struct device *dev;
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struct i2c_client *client;
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struct mutex io_lock;
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struct aat2870_register *reg_cache; /* register cache */
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int en_pin; /* enable GPIO pin (if < 0, ignore this value) */
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bool is_enable;
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/* init and uninit for platform specified */
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int (*init)(struct aat2870_data *aat2870);
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void (*uninit)(struct aat2870_data *aat2870);
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/* i2c io funcntions */
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int (*read)(struct aat2870_data *aat2870, u8 addr, u8 *val);
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int (*write)(struct aat2870_data *aat2870, u8 addr, u8 val);
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int (*update)(struct aat2870_data *aat2870, u8 addr, u8 mask, u8 val);
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/* for debugfs */
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struct dentry *dentry_root;
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};
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struct aat2870_subdev_info {
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int id;
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const char *name;
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void *platform_data;
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};
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struct aat2870_platform_data {
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int en_pin; /* enable GPIO pin (if < 0, ignore this value) */
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struct aat2870_subdev_info *subdevs;
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int num_subdevs;
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/* init and uninit for platform specified */
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int (*init)(struct aat2870_data *aat2870);
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void (*uninit)(struct aat2870_data *aat2870);
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};
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struct aat2870_bl_platform_data {
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/* backlight channels, default is AAT2870_BL_CH_ALL */
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int channels;
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/* backlight current magnitude, default is AAT2870_CURRENT_27_9 */
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int max_current;
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/* maximum brightness, default is 255 */
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int max_brightness;
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};
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#endif /* __LINUX_MFD_AAT2870_H */
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