/drivers/staging/iio/accel/adis16203.h

  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 * @indio_dev:		industrial I/O device structure
 63 * @trig:		data ready trigger registered with iio
 64 * @tx:			transmit buffer
 65 * @rx:			receive buffer
 66 * @buf_lock:		mutex to protect tx and rx
 67 **/
 68struct adis16203_state {
 69	struct spi_device		*us;
 70	struct iio_dev			*indio_dev;
 71	struct iio_trigger		*trig;
 72	u8				*tx;
 73	u8				*rx;
 74	struct mutex			buf_lock;
 75};
 76
 77int adis16203_set_irq(struct iio_dev *indio_dev, bool enable);
 78
 79enum adis16203_scan {
 80	ADIS16203_SCAN_SUPPLY,
 81	ADIS16203_SCAN_AUX_ADC,
 82	ADIS16203_SCAN_TEMP,
 83	ADIS16203_SCAN_INCLI_X,
 84	ADIS16203_SCAN_INCLI_Y,
 85};
 86
 87#ifdef CONFIG_IIO_RING_BUFFER
 88void adis16203_remove_trigger(struct iio_dev *indio_dev);
 89int adis16203_probe_trigger(struct iio_dev *indio_dev);
 90
 91ssize_t adis16203_read_data_from_ring(struct device *dev,
 92				      struct device_attribute *attr,
 93				      char *buf);
 94
 95int adis16203_configure_ring(struct iio_dev *indio_dev);
 96void adis16203_unconfigure_ring(struct iio_dev *indio_dev);
 97
 98#else /* CONFIG_IIO_RING_BUFFER */
 99
100static inline void adis16203_remove_trigger(struct iio_dev *indio_dev)
101{
102}
103
104static inline int adis16203_probe_trigger(struct iio_dev *indio_dev)
105{
106	return 0;
107}
108
109static inline ssize_t
110adis16203_read_data_from_ring(struct device *dev,
111			      struct device_attribute *attr,
112			      char *buf)
113{
114	return 0;
115}
116
117static int adis16203_configure_ring(struct iio_dev *indio_dev)
118{
119	return 0;
120}
121
122static inline void adis16203_unconfigure_ring(struct iio_dev *indio_dev)
123{
124}
125
126#endif /* CONFIG_IIO_RING_BUFFER */
127#endif /* SPI_ADIS16203_H_ */