linux-imx

/*

 * KMX61 - Kionix 6-axis Accelerometer/Magnetometer

 *

 * Copyright (c) 2014, 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 KMX61 (7-bit I2C slave address 0x0E or 0x0F).

 *

 */

​

#include <linux/module.h>

#include <linux/i2c.h>

#include <linux/acpi.h>

#include <linux/interrupt.h>

#include <linux/pm.h>

#include <linux/pm_runtime.h>

#include <linux/iio/iio.h>

#include <linux/iio/sysfs.h>

#include <linux/iio/events.h>

#include <linux/iio/trigger.h>

#include <linux/iio/buffer.h>

#include <linux/iio/triggered_buffer.h>

#include <linux/iio/trigger_consumer.h>

​

#define KMX61_DRV_NAME "kmx61"

#define KMX61_IRQ_NAME "kmx61_event"

​

#define KMX61_REG_WHO_AM_I  0x00

#define KMX61_REG_INS1      0x01

#define KMX61_REG_INS2      0x02

​

/*

 * three 16-bit accelerometer output registers for X/Y/Z axis

 * we use only XOUT_L as a base register, all other addresses

 * can be obtained by applying an offset and are provided here

 * only for clarity.

 */

#define KMX61_ACC_XOUT_L    0x0A

#define KMX61_ACC_XOUT_H    0x0B

#define KMX61_ACC_YOUT_L    0x0C

#define KMX61_ACC_YOUT_H    0x0D

#define KMX61_ACC_ZOUT_L    0x0E

#define KMX61_ACC_ZOUT_H    0x0F

​

/*

 * one 16-bit temperature output register

 */

#define KMX61_TEMP_L        0x10

#define KMX61_TEMP_H        0x11

​

/*

 * three 16-bit magnetometer output registers for X/Y/Z axis

 */

#define KMX61_MAG_XOUT_L    0x12

#define KMX61_MAG_XOUT_H    0x13

#define KMX61_MAG_YOUT_L    0x14

#define KMX61_MAG_YOUT_H    0x15

#define KMX61_MAG_ZOUT_L    0x16

#define KMX61_MAG_ZOUT_H    0x17

​

#define KMX61_REG_INL       0x28

#define KMX61_REG_STBY      0x29

#define KMX61_REG_CTRL1     0x2A

#define KMX61_REG_CTRL2     0x2B

#define KMX61_REG_ODCNTL    0x2C

#define KMX61_REG_INC1      0x2D

​

#define KMX61_REG_WUF_THRESH    0x3D

#define KMX61_REG_WUF_TIMER 0x3E

​

#define KMX61_ACC_STBY_BIT  BIT(0)

#define KMX61_MAG_STBY_BIT  BIT(1)

#define KMX61_ACT_STBY_BIT  BIT(7)

​

#define KMX61_ALL_STBY      (KMX61_ACC_STBY_BIT | KMX61_MAG_STBY_BIT)

​

#define KMX61_REG_INS1_BIT_WUFS     BIT(1)

​

#define KMX61_REG_INS2_BIT_ZP       BIT(0)

#define KMX61_REG_INS2_BIT_ZN       BIT(1)

#define KMX61_REG_INS2_BIT_YP       BIT(2)

#define KMX61_REG_INS2_BIT_YN       BIT(3)

#define KMX61_REG_INS2_BIT_XP       BIT(4)

#define KMX61_REG_INS2_BIT_XN       BIT(5)

​

#define KMX61_REG_CTRL1_GSEL_MASK   0x03

​

#define KMX61_REG_CTRL1_BIT_RES     BIT(4)

#define KMX61_REG_CTRL1_BIT_DRDYE   BIT(5)