drivers/staging/iio/accel/adis16209.h

   1 #ifndef SPI_ADIS16209_H_
   2 #define SPI_ADIS16209_H_
   3
   4 #define ADIS16209_STARTUP_DELAY 220 /* ms */
   5
   6 #define ADIS16209_READ_REG(a)    a
   7 #define ADIS16209_WRITE_REG(a) ((a) | 0x80)
   8
   9 /* Flash memory write count */
  10 #define ADIS16209_FLASH_CNT      0x00
  11 /* Output, power supply */
  12 #define ADIS16209_SUPPLY_OUT     0x02
  13 /* Output, x-axis accelerometer */
  14 #define ADIS16209_XACCL_OUT      0x04
  15 /* Output, y-axis accelerometer */
  16 #define ADIS16209_YACCL_OUT      0x06
  17 /* Output, auxiliary ADC input */
  18 #define ADIS16209_AUX_ADC        0x08
  19 /* Output, temperature */
  20 #define ADIS16209_TEMP_OUT       0x0A
  21 /* Output, x-axis inclination */
  22 #define ADIS16209_XINCL_OUT      0x0C
  23 /* Output, y-axis inclination */
  24 #define ADIS16209_YINCL_OUT      0x0E
  25 /* Output, +/-180 vertical rotational position */
  26 #define ADIS16209_ROT_OUT        0x10
  27 /* Calibration, x-axis acceleration offset null */
  28 #define ADIS16209_XACCL_NULL     0x12
  29 /* Calibration, y-axis acceleration offset null */
  30 #define ADIS16209_YACCL_NULL     0x14
  31 /* Calibration, x-axis inclination offset null */
  32 #define ADIS16209_XINCL_NULL     0x16
  33 /* Calibration, y-axis inclination offset null */
  34 #define ADIS16209_YINCL_NULL     0x18
  35 /* Calibration, vertical rotation offset null */
  36 #define ADIS16209_ROT_NULL       0x1A
  37 /* Alarm 1 amplitude threshold */
  38 #define ADIS16209_ALM_MAG1       0x20
  39 /* Alarm 2 amplitude threshold */
  40 #define ADIS16209_ALM_MAG2       0x22
  41 /* Alarm 1, sample period */
  42 #define ADIS16209_ALM_SMPL1      0x24
  43 /* Alarm 2, sample period */
  44 #define ADIS16209_ALM_SMPL2      0x26
  45 /* Alarm control */
  46 #define ADIS16209_ALM_CTRL       0x28
  47 /* Auxiliary DAC data */
  48 #define ADIS16209_AUX_DAC        0x30
  49 /* General-purpose digital input/output control */
  50 #define ADIS16209_GPIO_CTRL      0x32
  51 /* Miscellaneous control */
  52 #define ADIS16209_MSC_CTRL       0x34
  53 /* Internal sample period (rate) control */
  54 #define ADIS16209_SMPL_PRD       0x36
  55 /* Operation, filter configuration */
  56 #define ADIS16209_AVG_CNT        0x38
  57 /* Operation, sleep mode control */
  58 #define ADIS16209_SLP_CNT        0x3A
  59 /* Diagnostics, system status register */
  60 #define ADIS16209_DIAG_STAT      0x3C
  61 /* Operation, system command register */
  62 #define ADIS16209_GLOB_CMD       0x3E
  63
  64 #define ADIS16209_OUTPUTS        8
  65
  66 /* MSC_CTRL */
  67 /* Self-test at power-on: 1 = disabled, 0 = enabled */
  68 #define ADIS16209_MSC_CTRL_PWRUP_SELF_TEST      (1 << 10)
  69 /* Self-test enable */
  70 #define ADIS16209_MSC_CTRL_SELF_TEST_EN         (1 << 8)
  71 /* Data-ready enable: 1 = enabled, 0 = disabled */
  72 #define ADIS16209_MSC_CTRL_DATA_RDY_EN          (1 << 2)
  73 /* Data-ready polarity: 1 = active high, 0 = active low */
  74 #define ADIS16209_MSC_CTRL_ACTIVE_HIGH          (1 << 1)
  75 /* Data-ready line selection: 1 = DIO2, 0 = DIO1 */
  76 #define ADIS16209_MSC_CTRL_DATA_RDY_DIO2        (1 << 0)
  77
  78 /* DIAG_STAT */
  79 /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
  80 #define ADIS16209_DIAG_STAT_ALARM2        (1<<9)
  81 /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
  82 #define ADIS16209_DIAG_STAT_ALARM1        (1<<8)
  83 /* Self-test diagnostic error flag: 1 = error condition, 0 = normal operation */
  84 #define ADIS16209_DIAG_STAT_SELFTEST_FAIL (1<<5)
  85 /* SPI communications failure */
  86 #define ADIS16209_DIAG_STAT_SPI_FAIL      (1<<3)
  87 /* Flash update failure */
  88 #define ADIS16209_DIAG_STAT_FLASH_UPT     (1<<2)
  89 /* Power supply above 3.625 V */
  90 #define ADIS16209_DIAG_STAT_POWER_HIGH    (1<<1)
  91 /* Power supply below 3.15 V */
  92 #define ADIS16209_DIAG_STAT_POWER_LOW     (1<<0)
  93
  94 /* GLOB_CMD */
  95 #define ADIS16209_GLOB_CMD_SW_RESET     (1<<7)
  96 #define ADIS16209_GLOB_CMD_CLEAR_STAT   (1<<4)
  97 #define ADIS16209_GLOB_CMD_FACTORY_CAL  (1<<1)
  98
  99 #define ADIS16209_MAX_TX 24
 100 #define ADIS16209_MAX_RX 24
 101
 102 #define ADIS16209_ERROR_ACTIVE          (1<<14)
 103
 104 /**
 105  * struct adis16209_state - device instance specific data
 106  * @us:                 actual spi_device
 107  * @trig:               data ready trigger registered with iio
 108  * @tx:                 transmit buffer
 109  * @rx:                 receive buffer
 110  * @buf_lock:           mutex to protect tx and rx
 111  **/
 112 struct adis16209_state {
 113         struct spi_device       *us;
 114         struct iio_trigger      *trig;
 115         struct mutex            buf_lock;
 116         u8                      tx[ADIS16209_MAX_TX] ____cacheline_aligned;
 117         u8                      rx[ADIS16209_MAX_RX];
 118 };
 119
 120 int adis16209_set_irq(struct iio_dev *indio_dev, bool enable);
 121
 122 #define ADIS16209_SCAN_SUPPLY   0
 123 #define ADIS16209_SCAN_ACC_X    1
 124 #define ADIS16209_SCAN_ACC_Y    2
 125 #define ADIS16209_SCAN_AUX_ADC  3
 126 #define ADIS16209_SCAN_TEMP     4
 127 #define ADIS16209_SCAN_INCLI_X  5
 128 #define ADIS16209_SCAN_INCLI_Y  6
 129 #define ADIS16209_SCAN_ROT      7
 130
 131 #ifdef CONFIG_IIO_BUFFER
 132
 133 void adis16209_remove_trigger(struct iio_dev *indio_dev);
 134 int adis16209_probe_trigger(struct iio_dev *indio_dev);
 135
 136 ssize_t adis16209_read_data_from_ring(struct device *dev,
 137                                       struct device_attribute *attr,
 138                                       char *buf);
 139
 140 int adis16209_configure_ring(struct iio_dev *indio_dev);
 141 void adis16209_unconfigure_ring(struct iio_dev *indio_dev);
 142
 143 #else /* CONFIG_IIO_BUFFER */
 144
 145 static inline void adis16209_remove_trigger(struct iio_dev *indio_dev)
 146 {
 147 }
 148
 149 static inline int adis16209_probe_trigger(struct iio_dev *indio_dev)
 150 {
 151         return 0;
 152 }
 153
 154 static inline ssize_t
 155 adis16209_read_data_from_ring(struct device *dev,
 156                               struct device_attribute *attr,
 157                               char *buf)
 158 {
 159         return 0;
 160 }
 161
 162 static int adis16209_configure_ring(struct iio_dev *indio_dev)
 163 {
 164         return 0;
 165 }
 166
 167 static inline void adis16209_unconfigure_ring(struct iio_dev *indio_dev)
 168 {
 169 }
 170
 171 #endif /* CONFIG_IIO_BUFFER */
 172 #endif /* SPI_ADIS16209_H_ */