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/*
* Definitions for qmc5983 magnetic sensor chip.
*/
#ifndef __QMC5983_H__
#define __QMC5983_H__
#include <linux/ioctl.h> /* For IOCTL macros */
#define QMC5983_IOCTL_BASE 'm'
/* The following define the IOCTL command values via the ioctl macros */
#define QMC5983_SET_RANGE _IOW(QMC5983_IOCTL_BASE, 1, int)
#define QMC5983_SET_MODE _IOW(QMC5983_IOCTL_BASE, 2, int)
#define QMC5983_SET_BANDWIDTH _IOW(QMC5983_IOCTL_BASE, 3, int)
#define QMC5983_READ_MAGN_XYZ _IOR(QMC5983_IOCTL_BASE, 4, int)
#define QMC5983_SET_REGISTER_A _IOW(QMC5983_IOCTL_BASE, 5, char *)
#define QMC5983_SELF_TEST _IOWR(QMC5983_IOCTL_BASE, 6, char *)
/*-------------------------------------------------------------------*/
/* Magnetometer registers mapping */
#define CRA_REG_M 0x00 /* Configuration register A */
#define CRB_REG_M 0x01 /* Configuration register B */
#define MR_REG_M 0x02 /* Mode register */
/* Output register start address*/
#define OUT_X_M 0x03
#define OUT_X_L 0x04
#define OUT_Z_M 0x05
#define OUT_Z_L 0x06
#define OUT_Y_M 0x07
#define OUT_Y_L 0x08
/* QMC5983 magnetometer identification registers */
#define IRA_REG_M 0x0A
#define IRB_REG_M 0x0B
#define IRC_REG_M 0x0C
/* Magnetometer XYZ sensitivity */
#define GAIN_0 1370 /* XYZ sensitivity at 0.88G */
#define GAIN_1 1090 /* XYZ sensitivity at 1.3G */
#define GAIN_2 820 /* XYZ sensitivity at 1.9G */
#define GAIN_3 660 /* XYZ sensitivity at 2.5G */
#define GAIN_4 440 /* XYZ sensitivity at 4.0G */
#define GAIN_5 390 /* XYZ sensitivity at 4.7G */
#define GAIN_6 330 /* XYZ sensitivity at 5.6G */
#define GAIN_7 230 /* XYZ sensitivity at 8.1G */
/*Status registers */
#define SR_REG_M 0x09
/* Temperature registers */
#define TO_MSB_T 0x31
#define TO_LSB_T 0x32
/* Average per measurement output and output rate 15hz*/
#define AE_REG_0 0x10 /* XYZ output average at 1*/
#define AE_REG_1 0x30 /* XYZ output average at 2*/
#define AE_REG_2 0x50 /* XYZ output average at 4*/
#define AE_REG_3 0x70 /* XYZ output average at 8*/
/* I2C typical output rate and average per 8 */
#define RATE_REG_0 0x60 /* Typical output rate at 0.75HZ */
#define RATE_REG_1 0x64 /* Typical output rate at 1.5HZ */
#define RATE_REG_2 0x68 /* Typical output rate at 3HZ */
#define RATE_REG_3 0x6c /* Typical output rate at 7.5HZ */
#define RATE_REG_4 0x70 /* Typical output rate at 15HZ */
#define RATE_REG_5 0x74 /* Typical output rate at 30HZ */
#define RATE_REG_6 0x78 /* Typical output rate at 75HZ */
#define RATE_REG_7 0x7c /* Typical output rate at 220HZ */
/************************************************/
/* Magnetometer section defines */
/************************************************/
/* Magnetometer Sensor Full Scale */
#define QMC5983_0_88G 0x00
#define QMC5983_1_3G 0x20
#define QMC5983_1_9G 0x40
#define QMC5983_2_5G 0x60
#define QMC5983_4_0G 0x80
#define QMC5983_4_7G 0xA0
#define QMC5983_5_6G 0xC0
#define QMC5983_8_1G 0xE0
/* Magnetic Sensor Operating Mode */
#define QMC5983_NORMAL_MODE 0x00
#define QMC5983_POS_BIAS 0x01
#define QMC5983_NEG_BIAS 0x02
#define QMC5983_CC_MODE 0x00
#define QMC5983_SC_MODE 0x01
#define QMC5983_IDLE_MODE 0x02
#define QMC5983_SLEEP_MODE 0x03
/* Magnetometer output data rate */
#define QMC5983_ODR_75 0x00 /* 0.75Hz output data rate */
#define QMC5983_ODR1_5 0x04 /* 1.5Hz output data rate */
#define QMC5983_ODR3_0 0x08 /* 3Hz output data rate */
#define QMC5983_ODR7_5 0x0C /* 7.5Hz output data rate */
#define QMC5983_ODR15 0x10 /* 15Hz output data rate */
#define QMC5983_ODR30 0x14 /* 30Hz output data rate */
#define QMC5983_ODR75 0x18 /* 75Hz output data rate */
#define QMC5983_ODR220 0x1C /* 220Hz output data rate */
#define SAMPLE_AVERAGE_8 (0x3 << 5)
#define OUTPUT_RATE_75 (0x6 << 2)
#define MEASURE_NORMAL 0
#define MEASURE_SELFTEST 0x1
#define GAIN_DEFAULT (3 << 5)
// conversion of magnetic data (for bmm050) to uT units
// conversion of magnetic data to uT units
// 32768 = 1Guass = 100 uT
// 100 / 32768 = 25 / 8096
// 65536 = 360Degree
// 360 / 65536 = 45 / 8192
#define CONVERT_M 6
#define CONVERT_M_DIV 100 // 6/100 = CONVERT_M
#define CONVERT_O 1
#define CONVERT_O_DIV 1 // 1/64 = CONVERT_O
#ifdef __KERNEL__
#if 0 /*use mediatek's layout setting*/
struct QMC5983_platform_data {
u8 h_range;
u8 axis_map_x;
u8 axis_map_y;
u8 axis_map_z;
u8 negate_x;
u8 negate_y;
u8 negate_z;
int (*init)(void);
void (*exit)(void);
int (*power_on)(void);
int (*power_off)(void);
};
#endif
#endif /* __KERNEL__ */
#endif /* __QMC5983_H__ */
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