1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/*
* Definitions for akm8975 compass chip.
*/
#ifndef AKM8975_H
#define AKM8975_H
#include <linux/ioctl.h>
/* Device specific constant values */
#define AK8975_REG_WIA 0x00
#define AK8975_REG_INFO 0x01
#define AK8975_REG_ST1 0x02
#define AK8975_REG_HXL 0x03
#define AK8975_REG_HXH 0x04
#define AK8975_REG_HYL 0x05
#define AK8975_REG_HYH 0x06
#define AK8975_REG_HZL 0x07
#define AK8975_REG_HZH 0x08
#define AK8975_REG_ST2 0x09
#define AK8975_REG_CNTL 0x0A
#define AK8975_REG_RSV 0x0B
#define AK8975_REG_ASTC 0x0C
#define AK8975_REG_TS1 0x0D
#define AK8975_REG_TS2 0x0E
#define AK8975_REG_I2CDIS 0x0F
#define AK8975_FUSE_ASAX 0x10
#define AK8975_FUSE_ASAY 0x11
#define AK8975_FUSE_ASAZ 0x12
#define AK8975_MODE_SNG_MEASURE 0x01
#define AK8975_MODE_SELF_TEST 0x08
#define AK8975_MODE_FUSE_ACCESS 0x0F
#define AK8975_MODE_POWERDOWN 0x00
#define AK8975_RESET_DATA 0x00
#define AK8975_REGS_SIZE 13
#define AK8975_WIA_VALUE 0x48
/* To avoid device dependency, convert to general name */
#define AKM_I2C_NAME "akm8975"
#define AKM_MISCDEV_NAME "akm8975_dev"
#define AKM_SYSCLS_NAME "compass"
#define AKM_SYSDEV_NAME "akm8975"
#define AKM_REG_MODE AK8975_REG_CNTL
#define AKM_REG_RESET 0
#define AKM_REG_STATUS AK8975_REG_ST1
#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_REGS_SIZE AK8975_REGS_SIZE
#define AKM_REGS_1ST_ADDR AK8975_REG_WIA
#define AKM_FUSE_1ST_ADDR AK8975_FUSE_ASAX
#define AKM_MODE_SNG_MEASURE AK8975_MODE_SNG_MEASURE
#define AKM_MODE_SELF_TEST AK8975_MODE_SELF_TEST
#define AKM_MODE_FUSE_ACCESS AK8975_MODE_FUSE_ACCESS
#define AKM_MODE_POWERDOWN AK8975_MODE_POWERDOWN
#define AKM_RESET_DATA AK8975_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 akm8975_platform_data {
char layout;
int gpio_DRDY;
int gpio_RSTN;
};
#endif
|
