diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mfd/aat2870.h | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/include/linux/mfd/aat2870.h b/include/linux/mfd/aat2870.h new file mode 100644 index 000000000000..89212df05622 --- /dev/null +++ b/include/linux/mfd/aat2870.h @@ -0,0 +1,181 @@ +/* + * 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, + 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 */ |