91 lines
3.6 KiB
C
91 lines
3.6 KiB
C
/*
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* Definitions for akm8976 compass chip.
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*/
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#ifndef AKM8976_H
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#define AKM8976_H
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#include <linux/ioctl.h>
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/* Compass device dependent definition */
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#define AKECS_MODE_MEASURE 0x00 /* Starts measurement. Please use AKECS_MODE_MEASURE_SNG */
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/* or AKECS_MODE_MEASURE_SEQ instead of this. */
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#define AKECS_MODE_PFFD 0x01 /* Start pedometer and free fall detect. */
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#define AKECS_MODE_E2P_READ 0x02 /* E2P access mode (read). */
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#define AKECS_MODE_POWERDOWN 0x03 /* Power down mode */
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#define AKECS_MODE_MEASURE_SNG 0x10 /* Starts single measurement */
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#define AKECS_MODE_MEASURE_SEQ 0x11 /* Starts sequential measurement */
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/* Default register settings */
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#define CSPEC_AINT 0x01 /* Amplification for acceleration sensor */
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#define CSPEC_SNG_NUM 0x01 /* Single measurement mode */
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#define CSPEC_SEQ_NUM 0x02 /* Sequential measurement mode */
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#define CSPEC_SFRQ_32 0x00 /* Measurement frequency: 32Hz */
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#define CSPEC_SFRQ_64 0x01 /* Measurement frequency: 64Hz */
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#define CSPEC_MCS 0x07 /* Clock frequency */
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#define CSPEC_MKS 0x01 /* Clock type: CMOS level */
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#define CSPEC_INTEN 0x01 /* Interruption pin enable: Enable */
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#define RBUFF_SIZE 31 /* Rx buffer size */
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#define MAX_CALI_SIZE 0x1000U /* calibration buffer size */
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/* AK8976A register address */
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#define AKECS_REG_ST 0xC0
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#define AKECS_REG_TMPS 0xC1
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#define AKECS_REG_MS1 0xE0
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#define AKECS_REG_MS2 0xE1
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#define AKECS_REG_MS3 0xE2
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#define AKMIO 0xA1
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/* IOCTLs for AKM library */
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#define ECS_IOCTL_INIT _IO(AKMIO, 0x01)
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#define ECS_IOCTL_WRITE _IOW(AKMIO, 0x02, char[5])
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#define ECS_IOCTL_READ _IOWR(AKMIO, 0x03, char[5])
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#define ECS_IOCTL_RESET _IO(AKMIO, 0x04)
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#define ECS_IOCTL_INT_STATUS _IO(AKMIO, 0x05)
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#define ECS_IOCTL_FFD_STATUS _IO(AKMIO, 0x06)
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#define ECS_IOCTL_SET_MODE _IOW(AKMIO, 0x07, short)
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#define ECS_IOCTL_GETDATA _IOR(AKMIO, 0x08, char[RBUFF_SIZE+1])
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#define ECS_IOCTL_GET_NUMFRQ _IOR(AKMIO, 0x09, char[2])
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#define ECS_IOCTL_SET_PERST _IO(AKMIO, 0x0A)
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#define ECS_IOCTL_SET_G0RST _IO(AKMIO, 0x0B)
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#define ECS_IOCTL_SET_YPR _IOW(AKMIO, 0x0C, short[12])
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#define ECS_IOCTL_GET_OPEN_STATUS _IOR(AKMIO, 0x0D, int)
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#define ECS_IOCTL_GET_CLOSE_STATUS _IOR(AKMIO, 0x0E, int)
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#define ECS_IOCTL_GET_CALI_DATA _IOR(AKMIO, 0x0F, char[MAX_CALI_SIZE])
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#define ECS_IOCTL_GET_DELAY _IOR(AKMIO, 0x30, short)
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/* IOCTLs for APPs */
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#define ECS_IOCTL_APP_SET_MODE _IOW(AKMIO, 0x10, short)
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#define ECS_IOCTL_APP_SET_MFLAG _IOW(AKMIO, 0x11, short)
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#define ECS_IOCTL_APP_GET_MFLAG _IOW(AKMIO, 0x12, short)
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#define ECS_IOCTL_APP_SET_AFLAG _IOW(AKMIO, 0x13, short)
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#define ECS_IOCTL_APP_GET_AFLAG _IOR(AKMIO, 0x14, short)
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#define ECS_IOCTL_APP_SET_TFLAG _IOR(AKMIO, 0x15, short)
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#define ECS_IOCTL_APP_GET_TFLAG _IOR(AKMIO, 0x16, short)
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#define ECS_IOCTL_APP_RESET_PEDOMETER _IO(AKMIO, 0x17)
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#define ECS_IOCTL_APP_SET_DELAY _IOW(AKMIO, 0x18, short)
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#define ECS_IOCTL_APP_GET_DELAY ECS_IOCTL_GET_DELAY
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#define ECS_IOCTL_APP_SET_MVFLAG _IOW(AKMIO, 0x19, short) /* Set raw magnetic vector flag */
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#define ECS_IOCTL_APP_GET_MVFLAG _IOR(AKMIO, 0x1A, short) /* Get raw magnetic vector flag */
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/* IOCTLs for pedometer */
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#define ECS_IOCTL_SET_STEP_CNT _IOW(AKMIO, 0x20, short)
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/* Default GPIO setting */
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#define ECS_RST 146 /*MISC4, bit2 */
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#define ECS_CLK_ON 155 /*MISC5, bit3 */
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#define ECS_INTR 161 /*INT2, bit1 */
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struct akm8976_platform_data {
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int reset;
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int clk_on;
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int intr;
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};
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extern char *get_akm_cal_ram(void);
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#endif
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