drivers/staging/iio/accel/adis16201.h

   1 #ifndef SPI_ADIS16201_H_
   2 #define SPI_ADIS16201_H_
   3
   4 #define ADIS16201_STARTUP_DELAY 220 /* ms */
   5
   6 #define ADIS16201_READ_REG(a)    a
   7 #define ADIS16201_WRITE_REG(a) ((a) | 0x80)
   8
   9 #define ADIS16201_FLASH_CNT      0x00 /* Flash memory write count */
  10 #define ADIS16201_SUPPLY_OUT     0x02 /* Output, power supply */
  11 #define ADIS16201_XACCL_OUT      0x04 /* Output, x-axis accelerometer */
  12 #define ADIS16201_YACCL_OUT      0x06 /* Output, y-axis accelerometer */
  13 #define ADIS16201_AUX_ADC        0x08 /* Output, auxiliary ADC input */
  14 #define ADIS16201_TEMP_OUT       0x0A /* Output, temperature */
  15 #define ADIS16201_XINCL_OUT      0x0C /* Output, x-axis inclination */
  16 #define ADIS16201_YINCL_OUT      0x0E /* Output, y-axis inclination */
  17 #define ADIS16201_XACCL_OFFS     0x10 /* Calibration, x-axis acceleration offset */
  18 #define ADIS16201_YACCL_OFFS     0x12 /* Calibration, y-axis acceleration offset */
  19 #define ADIS16201_XACCL_SCALE    0x14 /* x-axis acceleration scale factor */
  20 #define ADIS16201_YACCL_SCALE    0x16 /* y-axis acceleration scale factor */
  21 #define ADIS16201_XINCL_OFFS     0x18 /* Calibration, x-axis inclination offset */
  22 #define ADIS16201_YINCL_OFFS     0x1A /* Calibration, y-axis inclination offset */
  23 #define ADIS16201_XINCL_SCALE    0x1C /* x-axis inclination scale factor */
  24 #define ADIS16201_YINCL_SCALE    0x1E /* y-axis inclination scale factor */
  25 #define ADIS16201_ALM_MAG1       0x20 /* Alarm 1 amplitude threshold */
  26 #define ADIS16201_ALM_MAG2       0x22 /* Alarm 2 amplitude threshold */
  27 #define ADIS16201_ALM_SMPL1      0x24 /* Alarm 1, sample period */
  28 #define ADIS16201_ALM_SMPL2      0x26 /* Alarm 2, sample period */
  29 #define ADIS16201_ALM_CTRL       0x28 /* Alarm control */
  30 #define ADIS16201_AUX_DAC        0x30 /* Auxiliary DAC data */
  31 #define ADIS16201_GPIO_CTRL      0x32 /* General-purpose digital input/output control */
  32 #define ADIS16201_MSC_CTRL       0x34 /* Miscellaneous control */
  33 #define ADIS16201_SMPL_PRD       0x36 /* Internal sample period (rate) control */
  34 #define ADIS16201_AVG_CNT        0x38 /* Operation, filter configuration */
  35 #define ADIS16201_SLP_CNT        0x3A /* Operation, sleep mode control */
  36 #define ADIS16201_DIAG_STAT      0x3C /* Diagnostics, system status register */
  37 #define ADIS16201_GLOB_CMD       0x3E /* Operation, system command register */
  38
  39 #define ADIS16201_OUTPUTS        7
  40
  41 /* MSC_CTRL */
  42 #define ADIS16201_MSC_CTRL_SELF_TEST_EN         (1 << 8)  /* Self-test enable */
  43 #define ADIS16201_MSC_CTRL_DATA_RDY_EN          (1 << 2)  /* Data-ready enable: 1 = enabled, 0 = disabled */
  44 #define ADIS16201_MSC_CTRL_ACTIVE_HIGH          (1 << 1)  /* Data-ready polarity: 1 = active high, 0 = active low */
  45 #define ADIS16201_MSC_CTRL_DATA_RDY_DIO1        (1 << 0)  /* Data-ready line selection: 1 = DIO1, 0 = DIO0 */
  46
  47 /* DIAG_STAT */
  48 #define ADIS16201_DIAG_STAT_ALARM2        (1<<9) /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
  49 #define ADIS16201_DIAG_STAT_ALARM1        (1<<8) /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
  50 #define ADIS16201_DIAG_STAT_SPI_FAIL      (1<<3) /* SPI communications failure */
  51 #define ADIS16201_DIAG_STAT_FLASH_UPT     (1<<2) /* Flash update failure */
  52 #define ADIS16201_DIAG_STAT_POWER_HIGH    (1<<1) /* Power supply above 3.625 V */
  53 #define ADIS16201_DIAG_STAT_POWER_LOW     (1<<0) /* Power supply below 3.15 V */
  54
  55 /* GLOB_CMD */
  56 #define ADIS16201_GLOB_CMD_SW_RESET     (1<<7)
  57 #define ADIS16201_GLOB_CMD_FACTORY_CAL  (1<<1)
  58
  59 #define ADIS16201_MAX_TX 14
  60 #define ADIS16201_MAX_RX 14
  61
  62 #define ADIS16201_ERROR_ACTIVE          (1<<14)
  63
  64 /**
  65  * struct adis16201_state - device instance specific data
  66  * @us:                 actual spi_device
  67  * @work_trigger_to_ring: bh for triggered event handling
  68  * @inter:              used to check if new interrupt has been triggered
  69  * @last_timestamp:     passing timestamp from th to bh of interrupt handler
  70  * @indio_dev:          industrial I/O device structure
  71  * @trig:               data ready trigger registered with iio
  72  * @tx:                 transmit buffer
  73  * @rx:                 receive buffer
  74  * @buf_lock:           mutex to protect tx and rx
  75  **/
  76 struct adis16201_state {
  77         struct spi_device               *us;
  78         struct work_struct              work_trigger_to_ring;
  79         s64                             last_timestamp;
  80         struct iio_dev                  *indio_dev;
  81         struct iio_trigger              *trig;
  82         u8                              *tx;
  83         u8                              *rx;
  84         struct mutex                    buf_lock;
  85 };
  86
  87 int adis16201_set_irq(struct device *dev, bool enable);
  88
  89 #ifdef CONFIG_IIO_RING_BUFFER
  90 enum adis16201_scan {
  91         ADIS16201_SCAN_SUPPLY,
  92         ADIS16201_SCAN_ACC_X,
  93         ADIS16201_SCAN_ACC_Y,
  94         ADIS16201_SCAN_AUX_ADC,
  95         ADIS16201_SCAN_TEMP,
  96         ADIS16201_SCAN_INCLI_X,
  97         ADIS16201_SCAN_INCLI_Y,
  98 };
  99
 100 void adis16201_remove_trigger(struct iio_dev *indio_dev);
 101 int adis16201_probe_trigger(struct iio_dev *indio_dev);
 102
 103 ssize_t adis16201_read_data_from_ring(struct device *dev,
 104                                       struct device_attribute *attr,
 105                                       char *buf);
 106
 107 int adis16201_configure_ring(struct iio_dev *indio_dev);
 108 void adis16201_unconfigure_ring(struct iio_dev *indio_dev);
 109
 110 int adis16201_initialize_ring(struct iio_ring_buffer *ring);
 111 void adis16201_uninitialize_ring(struct iio_ring_buffer *ring);
 112 #else /* CONFIG_IIO_RING_BUFFER */
 113
 114 static inline void adis16201_remove_trigger(struct iio_dev *indio_dev)
 115 {
 116 }
 117
 118 static inline int adis16201_probe_trigger(struct iio_dev *indio_dev)
 119 {
 120         return 0;
 121 }
 122
 123 static inline ssize_t
 124 adis16201_read_data_from_ring(struct device *dev,
 125                               struct device_attribute *attr,
 126                               char *buf)
 127 {
 128         return 0;
 129 }
 130
 131 static int adis16201_configure_ring(struct iio_dev *indio_dev)
 132 {
 133         return 0;
 134 }
 135
 136 static inline void adis16201_unconfigure_ring(struct iio_dev *indio_dev)
 137 {
 138 }
 139
 140 static inline int adis16201_initialize_ring(struct iio_ring_buffer *ring)
 141 {
 142         return 0;
 143 }
 144
 145 static inline void adis16201_uninitialize_ring(struct iio_ring_buffer *ring)
 146 {
 147 }
 148
 149 #endif /* CONFIG_IIO_RING_BUFFER */
 150 #endif /* SPI_ADIS16201_H_ */