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  * @work_trigger_to_ring: bh for triggered event handling
  63  * @inter:              used to check if new interrupt has been triggered
  64  * @last_timestamp:     passing timestamp from th to bh of interrupt handler
  65  * @indio_dev:          industrial I/O device structure
  66  * @trig:               data ready trigger registered with iio
  67  * @tx:                 transmit buffer
  68  * @rx:                 recieve buffer
  69  * @buf_lock:           mutex to protect tx and rx
  70  **/
  71 struct adis16203_state {
  72         struct spi_device               *us;
  73         struct work_struct              work_trigger_to_ring;
  74         s64                             last_timestamp;
  75         struct iio_dev                  *indio_dev;
  76         struct iio_trigger              *trig;
  77         u8                              *tx;
  78         u8                              *rx;
  79         struct mutex                    buf_lock;
  80 };
  81
  82 int adis16203_set_irq(struct device *dev, bool enable);
  83
  84 #ifdef CONFIG_IIO_RING_BUFFER
  85 enum adis16203_scan {
  86         ADIS16203_SCAN_SUPPLY,
  87         ADIS16203_SCAN_AUX_ADC,
  88         ADIS16203_SCAN_TEMP,
  89         ADIS16203_SCAN_INCLI_X,
  90         ADIS16203_SCAN_INCLI_Y,
  91 };
  92
  93 void adis16203_remove_trigger(struct iio_dev *indio_dev);
  94 int adis16203_probe_trigger(struct iio_dev *indio_dev);
  95
  96 ssize_t adis16203_read_data_from_ring(struct device *dev,
  97                                       struct device_attribute *attr,
  98                                       char *buf);
  99
 100 int adis16203_configure_ring(struct iio_dev *indio_dev);
 101 void adis16203_unconfigure_ring(struct iio_dev *indio_dev);
 102
 103 int adis16203_initialize_ring(struct iio_ring_buffer *ring);
 104 void adis16203_uninitialize_ring(struct iio_ring_buffer *ring);
 105 #else /* CONFIG_IIO_RING_BUFFER */
 106
 107 static inline void adis16203_remove_trigger(struct iio_dev *indio_dev)
 108 {
 109 }
 110
 111 static inline int adis16203_probe_trigger(struct iio_dev *indio_dev)
 112 {
 113         return 0;
 114 }
 115
 116 static inline ssize_t
 117 adis16203_read_data_from_ring(struct device *dev,
 118                               struct device_attribute *attr,
 119                               char *buf)
 120 {
 121         return 0;
 122 }
 123
 124 static int adis16203_configure_ring(struct iio_dev *indio_dev)
 125 {
 126         return 0;
 127 }
 128
 129 static inline void adis16203_unconfigure_ring(struct iio_dev *indio_dev)
 130 {
 131 }
 132
 133 static inline int adis16203_initialize_ring(struct iio_ring_buffer *ring)
 134 {
 135         return 0;
 136 }
 137
 138 static inline void adis16203_uninitialize_ring(struct iio_ring_buffer *ring)
 139 {
 140 }
 141
 142 #endif /* CONFIG_IIO_RING_BUFFER */
 143 #endif /* SPI_ADIS16203_H_ */