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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/*
* Common library for ADIS16XXX devices
*
* Copyright 2012 Analog Devices Inc.
* Author: Lars-Peter Clausen <lars@metafoo.de>
*
* Licensed under the GPL-2 or later.
*/
#ifndef __IIO_ADIS_H__
#define __IIO_ADIS_H__
#include <linux/spi/spi.h>
#include <linux/interrupt.h>
#include <linux/iio/types.h>
#define ADIS_WRITE_REG(reg) (0x80 | (reg))
#define ADIS_READ_REG(reg) (reg)
/**
* struct adis_data - ADIS chip variant specific data
* @read_delay: SPI delay for read operations in us
* @write_delay: SPI delay for write operations in us
* @glob_cmd_reg: Register address of the GLOB_CMD register
* @msc_ctrl_reg: Register address of the MSC_CTRL register
* @diag_stat_reg: Register address of the DIAG_STAT register
* @status_error_msgs: Array of error messgaes
* @status_error_mask:
*/
struct adis_data {
unsigned int read_delay;
unsigned int write_delay;
unsigned int glob_cmd_reg;
unsigned int msc_ctrl_reg;
unsigned int diag_stat_reg;
unsigned int self_test_mask;
unsigned int startup_delay;
const char * const *status_error_msgs;
unsigned int status_error_mask;
};
struct adis {
struct spi_device *spi;
struct iio_trigger *trig;
const struct adis_data *data;
struct mutex txrx_lock;
struct spi_message msg;
struct spi_transfer *xfer;
void *buffer;
uint8_t tx[8] ____cacheline_aligned;
uint8_t rx[4];
};
int adis_init(struct adis *adis, struct iio_dev *indio_dev,
struct spi_device *spi, const struct adis_data *data);
int adis_reset(struct adis *adis);
int adis_write_reg_8(struct adis *adis, unsigned int reg, uint8_t val);
int adis_write_reg_16(struct adis *adis, unsigned int reg, uint16_t val);
int adis_read_reg_16(struct adis *adis, unsigned int reg, uint16_t *val);
int adis_enable_irq(struct adis *adis, bool enable);
int adis_check_status(struct adis *adis);
int adis_initial_startup(struct adis *adis);
int adis_single_conversion(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan, unsigned int error_mask,
int *val);
#define ADIS_VOLTAGE_CHAN(addr, si, chan, name, bits) { \
.type = IIO_VOLTAGE, \
.indexed = 1, \
.channel = (chan), \
.extend_name = name, \
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \
.address = (addr), \
.scan_index = (si), \
.scan_type = { \
.sign = 'u', \
.realbits = (bits), \
.storagebits = 16, \
.endianness = IIO_BE, \
}, \
}
#define ADIS_SUPPLY_CHAN(addr, si, bits) \
ADIS_VOLTAGE_CHAN(addr, si, 0, "supply", bits)
#define ADIS_AUX_ADC_CHAN(addr, si, bits) \
ADIS_VOLTAGE_CHAN(addr, si, 1, NULL, bits)
#define ADIS_TEMP_CHAN(addr, si, bits) { \
.type = IIO_TEMP, \
.indexed = 1, \
.channel = 0, \
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
IIO_CHAN_INFO_SCALE_SEPARATE_BIT | \
IIO_CHAN_INFO_OFFSET_SEPARATE_BIT, \
.address = (addr), \
.scan_index = (si), \
.scan_type = { \
.sign = 'u', \
.realbits = (bits), \
.storagebits = 16, \
.endianness = IIO_BE, \
}, \
}
#define ADIS_MOD_CHAN(_type, mod, addr, si, info, bits) { \
.type = (_type), \
.modified = 1, \
.channel2 = IIO_MOD_ ## mod, \
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
IIO_CHAN_INFO_SCALE_SHARED_BIT | \
info, \
.address = (addr), \
.scan_index = (si), \
.scan_type = { \
.sign = 's', \
.realbits = (bits), \
.storagebits = 16, \
.endianness = IIO_BE, \
}, \
}
#define ADIS_ACCEL_CHAN(mod, addr, si, info, bits) \
ADIS_MOD_CHAN(IIO_ACCEL, mod, addr, si, info, bits)
#define ADIS_GYRO_CHAN(mod, addr, si, info, bits) \
ADIS_MOD_CHAN(IIO_ANGL_VEL, mod, addr, si, info, bits)
#define ADIS_INCLI_CHAN(mod, addr, si, info, bits) \
ADIS_MOD_CHAN(IIO_INCLI, mod, addr, si, info, bits)
#define ADIS_ROT_CHAN(mod, addr, si, info, bits) \
ADIS_MOD_CHAN(IIO_ROT, mod, addr, si, info, bits)
#ifdef CONFIG_IIO_ADIS_LIB_BUFFER
int adis_setup_buffer_and_trigger(struct adis *adis,
struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *));
void adis_cleanup_buffer_and_trigger(struct adis *adis,
struct iio_dev *indio_dev);
int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev);
void adis_remove_trigger(struct adis *adis);
int adis_update_scan_mode(struct iio_dev *indio_dev,
const unsigned long *scan_mask);
#else /* CONFIG_IIO_BUFFER */
static inline int adis_setup_buffer_and_trigger(struct adis *adis,
struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *))
{
return 0;
}
static inline void adis_cleanup_buffer_and_trigger(struct adis *adis,
struct iio_dev *indio_dev)
{
}
static inline int adis_probe_trigger(struct adis *adis,
struct iio_dev *indio_dev)
{
return 0;
}
static inline void adis_remove_trigger(struct adis *adis)
{
}
#define adis_update_scan_mode NULL
#endif /* CONFIG_IIO_BUFFER */
#endif
|
