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
|
#ifndef SPI_ADIS16209_H_
#define SPI_ADIS16209_H_
#define ADIS16209_STARTUP_DELAY 220 /* ms */
#define ADIS16209_READ_REG(a) a
#define ADIS16209_WRITE_REG(a) ((a) | 0x80)
/* Flash memory write count */
#define ADIS16209_FLASH_CNT 0x00
/* Output, power supply */
#define ADIS16209_SUPPLY_OUT 0x02
/* Output, x-axis accelerometer */
#define ADIS16209_XACCL_OUT 0x04
/* Output, y-axis accelerometer */
#define ADIS16209_YACCL_OUT 0x06
/* Output, auxiliary ADC input */
#define ADIS16209_AUX_ADC 0x08
/* Output, temperature */
#define ADIS16209_TEMP_OUT 0x0A
/* Output, x-axis inclination */
#define ADIS16209_XINCL_OUT 0x0C
/* Output, y-axis inclination */
#define ADIS16209_YINCL_OUT 0x0E
/* Output, +/-180 vertical rotational position */
#define ADIS16209_ROT_OUT 0x10
/* Calibration, x-axis acceleration offset null */
#define ADIS16209_XACCL_NULL 0x12
/* Calibration, y-axis acceleration offset null */
#define ADIS16209_YACCL_NULL 0x14
/* Calibration, x-axis inclination offset null */
#define ADIS16209_XINCL_NULL 0x16
/* Calibration, y-axis inclination offset null */
#define ADIS16209_YINCL_NULL 0x18
/* Calibration, vertical rotation offset null */
#define ADIS16209_ROT_NULL 0x1A
/* Alarm 1 amplitude threshold */
#define ADIS16209_ALM_MAG1 0x20
/* Alarm 2 amplitude threshold */
#define ADIS16209_ALM_MAG2 0x22
/* Alarm 1, sample period */
#define ADIS16209_ALM_SMPL1 0x24
/* Alarm 2, sample period */
#define ADIS16209_ALM_SMPL2 0x26
/* Alarm control */
#define ADIS16209_ALM_CTRL 0x28
/* Auxiliary DAC data */
#define ADIS16209_AUX_DAC 0x30
/* General-purpose digital input/output control */
#define ADIS16209_GPIO_CTRL 0x32
/* Miscellaneous control */
#define ADIS16209_MSC_CTRL 0x34
/* Internal sample period (rate) control */
#define ADIS16209_SMPL_PRD 0x36
/* Operation, filter configuration */
#define ADIS16209_AVG_CNT 0x38
/* Operation, sleep mode control */
#define ADIS16209_SLP_CNT 0x3A
/* Diagnostics, system status register */
#define ADIS16209_DIAG_STAT 0x3C
/* Operation, system command register */
#define ADIS16209_GLOB_CMD 0x3E
#define ADIS16209_OUTPUTS 8
/* MSC_CTRL */
/* Self-test at power-on: 1 = disabled, 0 = enabled */
#define ADIS16209_MSC_CTRL_PWRUP_SELF_TEST (1 << 10)
/* Self-test enable */
#define ADIS16209_MSC_CTRL_SELF_TEST_EN (1 << 8)
/* Data-ready enable: 1 = enabled, 0 = disabled */
#define ADIS16209_MSC_CTRL_DATA_RDY_EN (1 << 2)
/* Data-ready polarity: 1 = active high, 0 = active low */
#define ADIS16209_MSC_CTRL_ACTIVE_HIGH (1 << 1)
/* Data-ready line selection: 1 = DIO2, 0 = DIO1 */
#define ADIS16209_MSC_CTRL_DATA_RDY_DIO2 (1 << 0)
/* DIAG_STAT */
/* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
#define ADIS16209_DIAG_STAT_ALARM2 (1<<9)
/* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
#define ADIS16209_DIAG_STAT_ALARM1 (1<<8)
/* Self-test diagnostic error flag: 1 = error condition, 0 = normal operation */
#define ADIS16209_DIAG_STAT_SELFTEST_FAIL (1<<5)
/* SPI communications failure */
#define ADIS16209_DIAG_STAT_SPI_FAIL (1<<3)
/* Flash update failure */
#define ADIS16209_DIAG_STAT_FLASH_UPT (1<<2)
/* Power supply above 3.625 V */
#define ADIS16209_DIAG_STAT_POWER_HIGH (1<<1)
/* Power supply below 3.15 V */
#define ADIS16209_DIAG_STAT_POWER_LOW (1<<0)
/* GLOB_CMD */
#define ADIS16209_GLOB_CMD_SW_RESET (1<<7)
#define ADIS16209_GLOB_CMD_CLEAR_STAT (1<<4)
#define ADIS16209_GLOB_CMD_FACTORY_CAL (1<<1)
#define ADIS16209_MAX_TX 24
#define ADIS16209_MAX_RX 24
#define ADIS16209_ERROR_ACTIVE (1<<14)
/**
* struct adis16209_state - device instance specific data
* @us: actual spi_device
* @work_trigger_to_ring: bh for triggered event handling
* @last_timestamp: passing timestamp from th to bh of interrupt handler
* @indio_dev: industrial I/O device structure
* @trig: data ready trigger registered with iio
* @tx: transmit buffer
* @rx: recieve buffer
* @buf_lock: mutex to protect tx and rx
**/
struct adis16209_state {
struct spi_device *us;
struct work_struct work_trigger_to_ring;
s64 last_timestamp;
struct iio_dev *indio_dev;
struct iio_trigger *trig;
u8 *tx;
u8 *rx;
struct mutex buf_lock;
};
int adis16209_set_irq(struct device *dev, bool enable);
#ifdef CONFIG_IIO_RING_BUFFER
#define ADIS16209_SCAN_SUPPLY 0
#define ADIS16209_SCAN_ACC_X 1
#define ADIS16209_SCAN_ACC_Y 2
#define ADIS16209_SCAN_AUX_ADC 3
#define ADIS16209_SCAN_TEMP 4
#define ADIS16209_SCAN_INCLI_X 5
#define ADIS16209_SCAN_INCLI_Y 6
#define ADIS16209_SCAN_ROT 7
void adis16209_remove_trigger(struct iio_dev *indio_dev);
int adis16209_probe_trigger(struct iio_dev *indio_dev);
ssize_t adis16209_read_data_from_ring(struct device *dev,
struct device_attribute *attr,
char *buf);
int adis16209_configure_ring(struct iio_dev *indio_dev);
void adis16209_unconfigure_ring(struct iio_dev *indio_dev);
#else /* CONFIG_IIO_RING_BUFFER */
static inline void adis16209_remove_trigger(struct iio_dev *indio_dev)
{
}
static inline int adis16209_probe_trigger(struct iio_dev *indio_dev)
{
return 0;
}
static inline ssize_t
adis16209_read_data_from_ring(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return 0;
}
static int adis16209_configure_ring(struct iio_dev *indio_dev)
{
return 0;
}
static inline void adis16209_unconfigure_ring(struct iio_dev *indio_dev)
{
}
#endif /* CONFIG_IIO_RING_BUFFER */
#endif /* SPI_ADIS16209_H_ */
|
