summaryrefslogtreecommitdiff
path: root/drivers/staging/iio/gyro/adis16260.h
blob: 24bf70e4b29bb0adde776a7e653acc29f8ab9f80 (plain)
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
#ifndef SPI_ADIS16260_H_
#define SPI_ADIS16260_H_
#include "adis16260_platform_data.h"

#define ADIS16260_STARTUP_DELAY	220 /* ms */

#define ADIS16260_READ_REG(a)    a
#define ADIS16260_WRITE_REG(a) ((a) | 0x80)

#define ADIS16260_FLASH_CNT  0x00 /* Flash memory write count */
#define ADIS16260_SUPPLY_OUT 0x02 /* Power supply measurement */
#define ADIS16260_GYRO_OUT   0x04 /* X-axis gyroscope output */
#define ADIS16260_AUX_ADC    0x0A /* analog input channel measurement */
#define ADIS16260_TEMP_OUT   0x0C /* internal temperature measurement */
#define ADIS16260_ANGL_OUT   0x0E /* angle displacement */
#define ADIS16260_GYRO_OFF   0x14 /* Calibration, offset/bias adjustment */
#define ADIS16260_GYRO_SCALE 0x16 /* Calibration, scale adjustment */
#define ADIS16260_ALM_MAG1   0x20 /* Alarm 1 magnitude/polarity setting */
#define ADIS16260_ALM_MAG2   0x22 /* Alarm 2 magnitude/polarity setting */
#define ADIS16260_ALM_SMPL1  0x24 /* Alarm 1 dynamic rate of change setting */
#define ADIS16260_ALM_SMPL2  0x26 /* Alarm 2 dynamic rate of change setting */
#define ADIS16260_ALM_CTRL   0x28 /* Alarm control */
#define ADIS16260_AUX_DAC    0x30 /* Auxiliary DAC data */
#define ADIS16260_GPIO_CTRL  0x32 /* Control, digital I/O line */
#define ADIS16260_MSC_CTRL   0x34 /* Control, data ready, self-test settings */
#define ADIS16260_SMPL_PRD   0x36 /* Control, internal sample rate */
#define ADIS16260_SENS_AVG   0x38 /* Control, dynamic range, filtering */
#define ADIS16260_SLP_CNT    0x3A /* Control, sleep mode initiation */
#define ADIS16260_DIAG_STAT  0x3C /* Diagnostic, error flags */
#define ADIS16260_GLOB_CMD   0x3E /* Control, global commands */
#define ADIS16260_LOT_ID1    0x52 /* Lot Identification Code 1 */
#define ADIS16260_LOT_ID2    0x54 /* Lot Identification Code 2 */
#define ADIS16260_PROD_ID    0x56 /* Product identifier;
				   * convert to decimal = 16,265/16,260 */
#define ADIS16260_SERIAL_NUM 0x58 /* Serial number */

#define ADIS16260_OUTPUTS    5

#define ADIS16260_ERROR_ACTIVE			(1<<14)
#define ADIS16260_NEW_DATA			(1<<15)

/* MSC_CTRL */
#define ADIS16260_MSC_CTRL_MEM_TEST		(1<<11)
/* Internal self-test enable */
#define ADIS16260_MSC_CTRL_INT_SELF_TEST	(1<<10)
#define ADIS16260_MSC_CTRL_NEG_SELF_TEST	(1<<9)
#define ADIS16260_MSC_CTRL_POS_SELF_TEST	(1<<8)
#define ADIS16260_MSC_CTRL_DATA_RDY_EN		(1<<2)
#define ADIS16260_MSC_CTRL_DATA_RDY_POL_HIGH	(1<<1)
#define ADIS16260_MSC_CTRL_DATA_RDY_DIO2	(1<<0)

/* SMPL_PRD */
/* Time base (tB): 0 = 1.953 ms, 1 = 60.54 ms */
#define ADIS16260_SMPL_PRD_TIME_BASE	(1<<7)
#define ADIS16260_SMPL_PRD_DIV_MASK	0x7F

/* SLP_CNT */
#define ADIS16260_SLP_CNT_POWER_OFF     0x80

/* DIAG_STAT */
#define ADIS16260_DIAG_STAT_ALARM2	(1<<9)
#define ADIS16260_DIAG_STAT_ALARM1	(1<<8)
#define ADIS16260_DIAG_STAT_FLASH_CHK	(1<<6)
#define ADIS16260_DIAG_STAT_SELF_TEST	(1<<5)
#define ADIS16260_DIAG_STAT_OVERFLOW	(1<<4)
#define ADIS16260_DIAG_STAT_SPI_FAIL	(1<<3)
#define ADIS16260_DIAG_STAT_FLASH_UPT	(1<<2)
#define ADIS16260_DIAG_STAT_POWER_HIGH	(1<<1)
#define ADIS16260_DIAG_STAT_POWER_LOW	(1<<0)

/* GLOB_CMD */
#define ADIS16260_GLOB_CMD_SW_RESET	(1<<7)
#define ADIS16260_GLOB_CMD_FLASH_UPD	(1<<3)
#define ADIS16260_GLOB_CMD_DAC_LATCH	(1<<2)
#define ADIS16260_GLOB_CMD_FAC_CALIB	(1<<1)
#define ADIS16260_GLOB_CMD_AUTO_NULL	(1<<0)

#define ADIS16260_MAX_TX 24
#define ADIS16260_MAX_RX 24

#define ADIS16260_SPI_SLOW	(u32)(300 * 1000)
#define ADIS16260_SPI_BURST	(u32)(1000 * 1000)
#define ADIS16260_SPI_FAST	(u32)(2000 * 1000)

/**
 * struct adis16260_state - device instance specific data
 * @us:			actual spi_device
 * @indio_dev:		industrial I/O device structure
 * @trig:		data ready trigger registered with iio
 * @tx:			transmit buffer
 * @rx:			receive buffer
 * @buf_lock:		mutex to protect tx and rx
 * @negate:		negate the scale parameter
 **/
struct adis16260_state {
	struct spi_device		*us;
	struct iio_dev			*indio_dev;
	struct iio_trigger		*trig;
	u8				*tx;
	u8				*rx;
	struct mutex			buf_lock;
	unsigned			negate:1;
};

int adis16260_set_irq(struct iio_dev *indio_dev, bool enable);

/* At the moment triggers are only used for ring buffer
 * filling. This may change!
 */

#define ADIS16260_SCAN_SUPPLY	0
#define ADIS16260_SCAN_GYRO	1
#define ADIS16260_SCAN_AUX_ADC	2
#define ADIS16260_SCAN_TEMP	3
#define ADIS16260_SCAN_ANGL	4

#ifdef CONFIG_IIO_RING_BUFFER
void adis16260_remove_trigger(struct iio_dev *indio_dev);
int adis16260_probe_trigger(struct iio_dev *indio_dev);

ssize_t adis16260_read_data_from_ring(struct device *dev,
				      struct device_attribute *attr,
				      char *buf);


int adis16260_configure_ring(struct iio_dev *indio_dev);
void adis16260_unconfigure_ring(struct iio_dev *indio_dev);

#else /* CONFIG_IIO_RING_BUFFER */

static inline void adis16260_remove_trigger(struct iio_dev *indio_dev)
{
}

static inline int adis16260_probe_trigger(struct iio_dev *indio_dev)
{
	return 0;
}

static inline ssize_t
adis16260_read_data_from_ring(struct device *dev,
			      struct device_attribute *attr,
			      char *buf)
{
	return 0;
}

static int adis16260_configure_ring(struct iio_dev *indio_dev)
{
	return 0;
}

static inline void adis16260_unconfigure_ring(struct iio_dev *indio_dev)
{
}

#endif /* CONFIG_IIO_RING_BUFFER */
#endif /* SPI_ADIS16260_H_ */