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  * @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_RING_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_RING_BUFFER */
  97
  98 static inline void adis16203_remove_trigger(struct iio_dev *indio_dev)
  99 {
 100 }
 101
 102 static inline int adis16203_probe_trigger(struct iio_dev *indio_dev)
 103 {
 104         return 0;
 105 }
 106
 107 static inline ssize_t
 108 adis16203_read_data_from_ring(struct device *dev,
 109                               struct device_attribute *attr,
 110                               char *buf)
 111 {
 112         return 0;
 113 }
 114
 115 static int adis16203_configure_ring(struct iio_dev *indio_dev)
 116 {
 117         return 0;
 118 }
 119
 120 static inline void adis16203_unconfigure_ring(struct iio_dev *indio_dev)
 121 {
 122 }
 123
 124 #endif /* CONFIG_IIO_RING_BUFFER */
 125 #endif /* SPI_ADIS16203_H_ */