1 #ifndef SPI_ADIS16203_H_
2 #define SPI_ADIS16203_H_
3
4 #define ADIS16203_STARTUP_DELAY 220 /* ms */
5
6 #define ADIS16203_READ_REG(a) a
7 #define ADIS16203_WRITE_REG(a) ((a) | 0x80)
8
9 #define ADIS16203_FLASH_CNT 0x00 /* Flash memory write count */
10 #define ADIS16203_SUPPLY_OUT 0x02 /* Output, power supply */
11 #define ADIS16203_AUX_ADC 0x08 /* Output, auxiliary ADC input */
12 #define ADIS16203_TEMP_OUT 0x0A /* Output, temperature */
13 #define ADIS16203_XINCL_OUT 0x0C /* Output, x-axis inclination */
14 #define ADIS16203_YINCL_OUT 0x0E /* Output, y-axis inclination */
15 #define ADIS16203_INCL_NULL 0x18 /* Incline null calibration */
16 #define ADIS16203_ALM_MAG1 0x20 /* Alarm 1 amplitude threshold */
17 #define ADIS16203_ALM_MAG2 0x22 /* Alarm 2 amplitude threshold */
18 #define ADIS16203_ALM_SMPL1 0x24 /* Alarm 1, sample period */
19 #define ADIS16203_ALM_SMPL2 0x26 /* Alarm 2, sample period */
20 #define ADIS16203_ALM_CTRL 0x28 /* Alarm control */
21 #define ADIS16203_AUX_DAC 0x30 /* Auxiliary DAC data */
22 #define ADIS16203_GPIO_CTRL 0x32 /* General-purpose digital input/output control */
23 #define ADIS16203_MSC_CTRL 0x34 /* Miscellaneous control */
24 #define ADIS16203_SMPL_PRD 0x36 /* Internal sample period (rate) control */
25 #define ADIS16203_AVG_CNT 0x38 /* Operation, filter configuration */
26 #define ADIS16203_SLP_CNT 0x3A /* Operation, sleep mode control */
27 #define ADIS16203_DIAG_STAT 0x3C /* Diagnostics, system status register */
28 #define ADIS16203_GLOB_CMD 0x3E /* Operation, system command register */
29
30 #define ADIS16203_OUTPUTS 5
31
32 /* MSC_CTRL */
33 #define ADIS16203_MSC_CTRL_PWRUP_SELF_TEST (1 << 10) /* Self-test at power-on: 1 = disabled, 0 = enabled */
34 #define ADIS16203_MSC_CTRL_REVERSE_ROT_EN (1 << 9) /* Reverses rotation of both inclination outputs */
35 #define ADIS16203_MSC_CTRL_SELF_TEST_EN (1 << 8) /* Self-test enable */
36 #define ADIS16203_MSC_CTRL_DATA_RDY_EN (1 << 2) /* Data-ready enable: 1 = enabled, 0 = disabled */
37 #define ADIS16203_MSC_CTRL_ACTIVE_HIGH (1 << 1) /* Data-ready polarity: 1 = active high, 0 = active low */
38 #define ADIS16203_MSC_CTRL_DATA_RDY_DIO1 (1 << 0) /* Data-ready line selection: 1 = DIO1, 0 = DIO0 */
39
40 /* DIAG_STAT */
41 #define ADIS16203_DIAG_STAT_ALARM2 (1<<9) /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
42 #define ADIS16203_DIAG_STAT_ALARM1 (1<<8) /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
43 #define ADIS16203_DIAG_STAT_SELFTEST_FAIL (1<<5) /* Self-test diagnostic error flag */
44 #define ADIS16203_DIAG_STAT_SPI_FAIL (1<<3) /* SPI communications failure */
45 #define ADIS16203_DIAG_STAT_FLASH_UPT (1<<2) /* Flash update failure */
46 #define ADIS16203_DIAG_STAT_POWER_HIGH (1<<1) /* Power supply above 3.625 V */
47 #define ADIS16203_DIAG_STAT_POWER_LOW (1<<0) /* Power supply below 3.15 V */
48
49 /* GLOB_CMD */
50 #define ADIS16203_GLOB_CMD_SW_RESET (1<<7)
51 #define ADIS16203_GLOB_CMD_CLEAR_STAT (1<<4)
52 #define ADIS16203_GLOB_CMD_FACTORY_CAL (1<<1)
53
54 #define ADIS16203_MAX_TX 12
55 #define ADIS16203_MAX_RX 10
56
57 #define ADIS16203_ERROR_ACTIVE (1<<14)
58
59 /**
60 * struct adis16203_state - device instance specific data
61 * @us: actual spi_device
62 * @trig: data ready trigger registered with iio
63 * @tx: transmit buffer
64 * @rx: receive buffer
65 * @buf_lock: mutex to protect tx and rx
66 **/
67 struct adis16203_state {
68 struct spi_device *us;
69 struct iio_trigger *trig;
70 struct mutex buf_lock;
71 u8 tx[ADIS16203_MAX_TX] ____cacheline_aligned;
72 u8 rx[ADIS16203_MAX_RX];
73 };
74
75 int adis16203_set_irq(struct iio_dev *indio_dev, bool enable);
76
77 enum adis16203_scan {
78 ADIS16203_SCAN_SUPPLY,
79 ADIS16203_SCAN_AUX_ADC,
80 ADIS16203_SCAN_TEMP,
81 ADIS16203_SCAN_INCLI_X,
82 ADIS16203_SCAN_INCLI_Y,
83 };
84
85 #ifdef CONFIG_IIO_BUFFER
86 void adis16203_remove_trigger(struct iio_dev *indio_dev);
87 int adis16203_probe_trigger(struct iio_dev *indio_dev);
88
89 ssize_t adis16203_read_data_from_ring(struct device *dev,
90 struct device_attribute *attr,
91 char *buf);
92
93 int adis16203_configure_ring(struct iio_dev *indio_dev);
94 void adis16203_unconfigure_ring(struct iio_dev *indio_dev);
95
96 #else /* CONFIG_IIO_BUFFER */
97
adis16203_remove_trigger(struct iio_dev * indio_dev)98 static inline void adis16203_remove_trigger(struct iio_dev *indio_dev)
99 {
100 }
101
adis16203_probe_trigger(struct iio_dev * indio_dev)102 static inline int adis16203_probe_trigger(struct iio_dev *indio_dev)
103 {
104 return 0;
105 }
106
107 static inline ssize_t
adis16203_read_data_from_ring(struct device * dev,struct device_attribute * attr,char * buf)108 adis16203_read_data_from_ring(struct device *dev,
109 struct device_attribute *attr,
110 char *buf)
111 {
112 return 0;
113 }
114
adis16203_configure_ring(struct iio_dev * indio_dev)115 static int adis16203_configure_ring(struct iio_dev *indio_dev)
116 {
117 return 0;
118 }
119
adis16203_unconfigure_ring(struct iio_dev * indio_dev)120 static inline void adis16203_unconfigure_ring(struct iio_dev *indio_dev)
121 {
122 }
123
124 #endif /* CONFIG_IIO_BUFFER */
125 #endif /* SPI_ADIS16203_H_ */
126