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
|
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* Copyright (c) 2018-2019, Linux Foundation. All rights reserved.
* Copyright (C) 2019 XiaoMi, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef __AKM09970_H__
#define __AKM09970_H__
#include <linux/types.h>
#include <linux/ioctl.h>
//#define pr_fmt(fmt) "akm09970: %s: %d " fmt, __func__, __LINE__
#define AKM09970_DRV_NAME "akm09970"
#define AKM09970_CLASS_NAME "akm"
/* AKM09970 Driver Magic Number */
#define AKM_IOC_MAGIC 'M'
#define AKM_PRIVATE 109
/* Device specific constant values */
#define AK09970_REG_WIA 0x00
#define AK09970_REG_ST_XYZ 0x17
#define AK09970_REG_CNTL1 0x20
#define AK09970_REG_CNTL2 0x21
#define AK09970_REG_RESET 0x30
#define AK09970_RESET_DATA 0x01
#define AK09970_WIA1_VALUE 0x48
#define AK09970_WIA2_VALUE 0xC0
#define AK09970_MODE_POWERDOWN 0x00
#define AK09970_MODE_CONTINUOUS_10HZ 0x08 /* 10Hz */
#define AK09970_MODE_CONTINUOUS_20HZ 0x0A /* 20Hz */
#define AK09970_MODE_CONTINUOUS_50HZ 0x0C /* 50Hz */
#define AK09970_MODE_CONTINUOUS_100HZ 0x0E /* 100Hz */
#define AKM_SENSOR_INFO_SIZE 2
#define AKM_SENSOR_CONF_SIZE 3
#define AKM_SENSOR_DATA_SIZE 8
#define AK09970_MODE_POS 0
#define AK09970_MODE_MSK 0x0F
#define AK09970_MODE_REG AK09970_REG_CNTL2
#define AK09970_SDR_MODE_POS 4
#define AK09970_SDR_MODE_MSK 0x10
#define AK09970_SDR_MODE_REG AK09970_REG_CNTL2
#define AK09970_SMR_MODE_POS 5
#define AK09970_SMR_MODE_MSK 0x20
#define AK09970_SMR_MODE_REG AK09970_REG_CNTL2
#define AKM_DRDY_IS_HIGH(x) ((x) & 0x01)
#define AKM_DOR_IS_HIGH(x) ((x) & 0x02)
#define AKM_ERRADC_IS_HIGH(x) ((x) & 0x01)
#define AKM_ERRXY_IS_HIGH(x) ((x) & 0x80)
#define AK09970_SENS_Q16 ((int32_t)(72090)) /* 1.1uT in Q16 format */
#define AKM_DRDY_TIMEOUT_MS 100
#define AKM_DEFAULT_MEASURE_HZ 10
/* POWER SUPPLY VOLTAGE RANGE */
#define AKM09970_VDD_MIN_UV 1800000
#define AKM09970_VDD_MAX_UV 1800000
#define PWM_PERIOD_DEFAULT_NS 1000000
struct akm09970_platform_data {
uint8_t sensor_smr;
uint8_t sensor_mode;
uint8_t sensor_state;
uint8_t data[AKM_SENSOR_DATA_SIZE];
};
/* IOC CMD */
#define AKM_IOC_SET_ACTIVE \
_IOW(AKM_IOC_MAGIC, AKM_PRIVATE + 1, struct akm09970_platform_data)
#define AKM_IOC_SET_MODE \
_IOW(AKM_IOC_MAGIC, AKM_PRIVATE + 2, struct akm09970_platform_data)
#define AKM_IOC_GET_SENSEDATA \
_IOR(AKM_IOC_MAGIC, AKM_PRIVATE + 4, struct akm09970_platform_data)
#define AKM_IOC_GET_SENSSMR \
_IOR(AKM_IOC_MAGIC, AKM_PRIVATE + 5, struct akm09970_platform_data)
#endif /* __AKM09970_H__ */
|
