linux-imx

/*

 * RPR-0521 ROHM Ambient Light and Proximity Sensor

 *

 * Copyright (c) 2015, Intel Corporation.

 *

 * This file is subject to the terms and conditions of version 2 of

 * the GNU General Public License.  See the file COPYING in the main

 * directory of this archive for more details.

 *

 * IIO driver for RPR-0521RS (7-bit I2C slave address 0x38).

 *

 * TODO: illuminance channel

 */

​

#include <linux/module.h>

#include <linux/init.h>

#include <linux/i2c.h>

#include <linux/regmap.h>

#include <linux/delay.h>

#include <linux/acpi.h>

​

#include <linux/iio/iio.h>

#include <linux/iio/buffer.h>

#include <linux/iio/trigger.h>

#include <linux/iio/trigger_consumer.h>

#include <linux/iio/triggered_buffer.h>

#include <linux/iio/sysfs.h>

#include <linux/pm_runtime.h>

​

#define RPR0521_REG_SYSTEM_CTRL     0x40

#define RPR0521_REG_MODE_CTRL       0x41

#define RPR0521_REG_ALS_CTRL        0x42

#define RPR0521_REG_PXS_CTRL        0x43

#define RPR0521_REG_PXS_DATA        0x44 /* 16-bit, little endian */

#define RPR0521_REG_ALS_DATA0       0x46 /* 16-bit, little endian */

#define RPR0521_REG_ALS_DATA1       0x48 /* 16-bit, little endian */

#define RPR0521_REG_INTERRUPT       0x4A

#define RPR0521_REG_PS_OFFSET_LSB   0x53

#define RPR0521_REG_ID          0x92

​

#define RPR0521_MODE_ALS_MASK       BIT(7)

#define RPR0521_MODE_PXS_MASK       BIT(6)

#define RPR0521_MODE_MEAS_TIME_MASK GENMASK(3, 0)

#define RPR0521_ALS_DATA0_GAIN_MASK GENMASK(5, 4)

#define RPR0521_ALS_DATA0_GAIN_SHIFT    4

#define RPR0521_ALS_DATA1_GAIN_MASK GENMASK(3, 2)

#define RPR0521_ALS_DATA1_GAIN_SHIFT    2

#define RPR0521_PXS_GAIN_MASK       GENMASK(5, 4)

#define RPR0521_PXS_GAIN_SHIFT      4

#define RPR0521_PXS_PERSISTENCE_MASK    GENMASK(3, 0)

#define RPR0521_INTERRUPT_INT_TRIG_PS_MASK  BIT(0)

#define RPR0521_INTERRUPT_INT_TRIG_ALS_MASK BIT(1)

#define RPR0521_INTERRUPT_INT_REASSERT_MASK BIT(3)

#define RPR0521_INTERRUPT_ALS_INT_STATUS_MASK   BIT(6)

#define RPR0521_INTERRUPT_PS_INT_STATUS_MASK    BIT(7)

​

#define RPR0521_MODE_ALS_ENABLE     BIT(7)

#define RPR0521_MODE_ALS_DISABLE    0x00

#define RPR0521_MODE_PXS_ENABLE     BIT(6)

#define RPR0521_MODE_PXS_DISABLE    0x00

#define RPR0521_PXS_PERSISTENCE_DRDY    0x00

​

#define RPR0521_INTERRUPT_INT_TRIG_PS_ENABLE    BIT(0)