include/linux/akm8963.h

/*
 * Definitions for akm8963 compass chip.
 */
#ifndef AKM8963_H
#define AKM8963_H

#include <linux/ioctl.h>
#define AK8963_MEASUREMENT_TIME_US      10000
/* Device specific constant values */
#define AK8963_REG_WIA		0x00
#define AK8963_REG_INFO		0x01
#define AK8963_REG_ST1		0x02
#define AK8963_REG_HXL		0x03
#define AK8963_REG_HXH		0x04
#define AK8963_REG_HYL		0x05
#define AK8963_REG_HYH		0x06
#define AK8963_REG_HZL		0x07
#define AK8963_REG_HZH		0x08
#define AK8963_REG_ST2		0x09
#define AK8963_REG_CNTL1	0x0A
#define AK8963_REG_CNTL2	0x0B
#define AK8963_REG_ASTC		0x0C
#define AK8963_REG_TS1		0x0D
#define AK8963_REG_TS2		0x0E
#define AK8963_REG_I2CDIS	0x0F

#define AK8963_FUSE_ASAX	0x10
#define AK8963_FUSE_ASAY	0x11
#define AK8963_FUSE_ASAZ	0x12

#define AK8963_MODE_SNG_MEASURE		0x11
#define AK8963_MODE_SELF_TEST		0x18
#define AK8963_MODE_FUSE_ACCESS		0x0F
#define AK8963_MODE_POWERDOWN		0x00
#define AK8963_RESET_DATA			0x01

/* To avoid device dependency, convert to general name */
#define AKM_I2C_NAME			"akm8963"
#define AKM_MISCDEV_NAME		"akm8963_dev"
#define AKM_SYSCLS_NAME			"compass"
#define AKM_SYSDEV_NAME			"akm8963"
#define AKM_REG_MODE			AK8963_REG_CNTL1
#define AKM_REG_RESET			AK8963_REG_CNTL2
#define AKM_REG_STATUS			AK8963_REG_ST1
#define AKM_WIA_VALE			0x48
#define AKM_MEASURE_TIME_US		10000
#define AKM_DRDY_IS_HIGH(x)		((x) & 0x01)
#define AKM_SENSOR_INFO_SIZE	2
#define AKM_SENSOR_CONF_SIZE	3
#define AKM_SENSOR_DATA_SIZE	8

#define AKM_YPR_DATA_SIZE		16
#define AKM_RWBUF_SIZE			16

#define AKM_MODE_SNG_MEASURE	AK8963_MODE_SNG_MEASURE
#define AKM_MODE_SELF_TEST		AK8963_MODE_SELF_TEST
#define AKM_MODE_FUSE_ACCESS	AK8963_MODE_FUSE_ACCESS
#define AKM_MODE_POWERDOWN		AK8963_MODE_POWERDOWN
#define AKM_RESET_DATA			AK8963_RESET_DATA

#define ACC_DATA_FLAG		0
#define MAG_DATA_FLAG		1
#define FUSION_DATA_FLAG	2
#define AKM_NUM_SENSORS		3

#define ACC_DATA_READY		(1<<(ACC_DATA_FLAG))
#define MAG_DATA_READY		(1<<(MAG_DATA_FLAG))
#define FUSION_DATA_READY	(1<<(FUSION_DATA_FLAG))

#define AKMIO				0xA1

/* IOCTLs for AKM library */
#define ECS_IOCTL_READ		_IOWR(AKMIO, 0x01, char)
#define ECS_IOCTL_WRITE		_IOW(AKMIO, 0x02, char)
#define ECS_IOCTL_RESET		_IO(AKMIO, 0x03)
#define ECS_IOCTL_SET_MODE	_IOW(AKMIO, 0x10, char)
#define ECS_IOCTL_SET_YPR	_IOW(AKMIO, 0x11, int[AKM_YPR_DATA_SIZE])
#define ECS_IOCTL_GET_INFO	_IOR(AKMIO, 0x20, \
					unsigned char[AKM_SENSOR_INFO_SIZE])
#define ECS_IOCTL_GET_CONF	_IOR(AKMIO, 0x21, \
					unsigned char[AKM_SENSOR_CONF_SIZE])
#define ECS_IOCTL_GET_DATA	_IOR(AKMIO, 0x22, \
					unsigned char[AKM_SENSOR_DATA_SIZE])
#define ECS_IOCTL_GET_OPEN_STATUS	_IOR(AKMIO, 0x23, int)
#define ECS_IOCTL_GET_CLOSE_STATUS	_IOR(AKMIO, 0x24, int)
#define ECS_IOCTL_GET_DELAY		_IOR(AKMIO, 0x25, long long int)
#define ECS_IOCTL_GET_LAYOUT		_IOR(AKMIO, 0x26, char)
#define ECS_IOCTL_GET_ACCEL			_IOR(AKMIO, 0x30, short[3])

struct akm8963_platform_data {
	char layout;
	char outbit;
	int gpio_DRDY;
	int gpio_RSTN;
};

#endif