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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
#ifndef SPI_ADIS16240_H_
#define SPI_ADIS16240_H_
#define ADIS16240_STARTUP_DELAY 220 /* ms */
#define ADIS16240_READ_REG(a) a
#define ADIS16240_WRITE_REG(a) ((a) | 0x80)
/* Flash memory write count */
#define ADIS16240_FLASH_CNT 0x00
/* Output, power supply */
#define ADIS16240_SUPPLY_OUT 0x02
/* Output, x-axis accelerometer */
#define ADIS16240_XACCL_OUT 0x04
/* Output, y-axis accelerometer */
#define ADIS16240_YACCL_OUT 0x06
/* Output, z-axis accelerometer */
#define ADIS16240_ZACCL_OUT 0x08
/* Output, auxiliary ADC input */
#define ADIS16240_AUX_ADC 0x0A
/* Output, temperature */
#define ADIS16240_TEMP_OUT 0x0C
/* Output, x-axis acceleration peak */
#define ADIS16240_XPEAK_OUT 0x0E
/* Output, y-axis acceleration peak */
#define ADIS16240_YPEAK_OUT 0x10
/* Output, z-axis acceleration peak */
#define ADIS16240_ZPEAK_OUT 0x12
/* Output, sum-of-squares acceleration peak */
#define ADIS16240_XYZPEAK_OUT 0x14
/* Output, Capture Buffer 1, X and Y acceleration */
#define ADIS16240_CAPT_BUF1 0x16
/* Output, Capture Buffer 2, Z acceleration */
#define ADIS16240_CAPT_BUF2 0x18
/* Diagnostic, error flags */
#define ADIS16240_DIAG_STAT 0x1A
/* Diagnostic, event counter */
#define ADIS16240_EVNT_CNTR 0x1C
/* Diagnostic, check sum value from firmware test */
#define ADIS16240_CHK_SUM 0x1E
/* Calibration, x-axis acceleration offset adjustment */
#define ADIS16240_XACCL_OFF 0x20
/* Calibration, y-axis acceleration offset adjustment */
#define ADIS16240_YACCL_OFF 0x22
/* Calibration, z-axis acceleration offset adjustment */
#define ADIS16240_ZACCL_OFF 0x24
/* Clock, hour and minute */
#define ADIS16240_CLK_TIME 0x2E
/* Clock, month and day */
#define ADIS16240_CLK_DATE 0x30
/* Clock, year */
#define ADIS16240_CLK_YEAR 0x32
/* Wake-up setting, hour and minute */
#define ADIS16240_WAKE_TIME 0x34
/* Wake-up setting, month and day */
#define ADIS16240_WAKE_DATE 0x36
/* Alarm 1 amplitude threshold */
#define ADIS16240_ALM_MAG1 0x38
/* Alarm 2 amplitude threshold */
#define ADIS16240_ALM_MAG2 0x3A
/* Alarm control */
#define ADIS16240_ALM_CTRL 0x3C
/* Capture, external trigger control */
#define ADIS16240_XTRIG_CTRL 0x3E
/* Capture, address pointer */
#define ADIS16240_CAPT_PNTR 0x40
/* Capture, configuration and control */
#define ADIS16240_CAPT_CTRL 0x42
/* General-purpose digital input/output control */
#define ADIS16240_GPIO_CTRL 0x44
/* Miscellaneous control */
#define ADIS16240_MSC_CTRL 0x46
/* Internal sample period (rate) control */
#define ADIS16240_SMPL_PRD 0x48
/* System command */
#define ADIS16240_GLOB_CMD 0x4A
#define ADIS16240_OUTPUTS 6
/* MSC_CTRL */
/* Enables sum-of-squares output (XYZPEAK_OUT) */
#define ADIS16240_MSC_CTRL_XYZPEAK_OUT_EN (1 << 15)
/* Enables peak tracking output (XPEAK_OUT, YPEAK_OUT, and ZPEAK_OUT) */
#define ADIS16240_MSC_CTRL_X_Y_ZPEAK_OUT_EN (1 << 14)
/* Self-test enable: 1 = apply electrostatic force, 0 = disabled */
#define ADIS16240_MSC_CTRL_SELF_TEST_EN (1 << 8)
/* Data-ready enable: 1 = enabled, 0 = disabled */
#define ADIS16240_MSC_CTRL_DATA_RDY_EN (1 << 2)
/* Data-ready polarity: 1 = active high, 0 = active low */
#define ADIS16240_MSC_CTRL_ACTIVE_HIGH (1 << 1)
/* Data-ready line selection: 1 = DIO2, 0 = DIO1 */
#define ADIS16240_MSC_CTRL_DATA_RDY_DIO2 (1 << 0)
/* DIAG_STAT */
/* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
#define ADIS16240_DIAG_STAT_ALARM2 (1<<9)
/* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
#define ADIS16240_DIAG_STAT_ALARM1 (1<<8)
/* Capture buffer full: 1 = capture buffer is full */
#define ADIS16240_DIAG_STAT_CPT_BUF_FUL (1<<7)
/* Flash test, checksum flag: 1 = mismatch, 0 = match */
#define ADIS16240_DIAG_STAT_CHKSUM (1<<6)
/* Power-on, self-test flag: 1 = failure, 0 = pass */
#define ADIS16240_DIAG_STAT_PWRON_FAIL (1<<5)
/* Power-on self-test: 1 = in-progress, 0 = complete */
#define ADIS16240_DIAG_STAT_PWRON_BUSY (1<<4)
/* SPI communications failure */
#define ADIS16240_DIAG_STAT_SPI_FAIL (1<<3)
/* Flash update failure */
#define ADIS16240_DIAG_STAT_FLASH_UPT (1<<2)
/* Power supply above 3.625 V */
#define ADIS16240_DIAG_STAT_POWER_HIGH (1<<1)
/* Power supply below 3.15 V */
#define ADIS16240_DIAG_STAT_POWER_LOW (1<<0)
/* GLOB_CMD */
#define ADIS16240_GLOB_CMD_RESUME (1<<8)
#define ADIS16240_GLOB_CMD_SW_RESET (1<<7)
#define ADIS16240_GLOB_CMD_STANDBY (1<<2)
#define ADIS16240_ERROR_ACTIVE (1<<14)
#define ADIS16240_MAX_TX 24
#define ADIS16240_MAX_RX 24
/**
* struct adis16240_state - device instance specific data
* @us: actual spi_device
* @work_trigger_to_ring: bh for triggered event handling
* @inter: used to check if new interrupt has been triggered
* @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 adis16240_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 adis16240_set_irq(struct device *dev, bool enable);
#ifdef CONFIG_IIO_RING_BUFFER
/* At the moment triggers are only used for ring buffer
* filling. This may change!
*/
#define ADIS16240_SCAN_SUPPLY 0
#define ADIS16240_SCAN_ACC_X 1
#define ADIS16240_SCAN_ACC_Y 2
#define ADIS16240_SCAN_ACC_Z 3
#define ADIS16240_SCAN_AUX_ADC 4
#define ADIS16240_SCAN_TEMP 5
void adis16240_remove_trigger(struct iio_dev *indio_dev);
int adis16240_probe_trigger(struct iio_dev *indio_dev);
ssize_t adis16240_read_data_from_ring(struct device *dev,
struct device_attribute *attr,
char *buf);
int adis16240_configure_ring(struct iio_dev *indio_dev);
void adis16240_unconfigure_ring(struct iio_dev *indio_dev);
#else /* CONFIG_IIO_RING_BUFFER */
static inline void adis16240_remove_trigger(struct iio_dev *indio_dev)
{
}
static inline int adis16240_probe_trigger(struct iio_dev *indio_dev)
{
return 0;
}
static inline ssize_t
adis16240_read_data_from_ring(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return 0;
}
static int adis16240_configure_ring(struct iio_dev *indio_dev)
{
return 0;
}
static inline void adis16240_unconfigure_ring(struct iio_dev *indio_dev)
{
}
#endif /* CONFIG_IIO_RING_BUFFER */
#endif /* SPI_ADIS16240_H_ */
|