release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/iio/gyro/adis16260.h

   1 #ifndef SPI_ADIS16260_H_
   2 #define SPI_ADIS16260_H_
   3
   4 #define ADIS16260_STARTUP_DELAY 220 /* ms */
   5
   6 #define ADIS16260_READ_REG(a)    a
   7 #define ADIS16260_WRITE_REG(a) ((a) | 0x80)
   8
   9 #define ADIS16260_FLASH_CNT  0x00 /* Flash memory write count */
  10 #define ADIS16260_SUPPLY_OUT 0x02 /* Power supply measurement */
  11 #define ADIS16260_GYRO_OUT   0x04 /* X-axis gyroscope output */
  12 #define ADIS16260_AUX_ADC    0x0A /* analog input channel measurement */
  13 #define ADIS16260_TEMP_OUT   0x0C /* internal temperature measurement */
  14 #define ADIS16260_ANGL_OUT   0x0E /* angle displacement */
  15 #define ADIS16260_GYRO_OFF   0x14 /* Calibration, offset/bias adjustment */
  16 #define ADIS16260_GYRO_SCALE 0x16 /* Calibration, scale adjustment */
  17 #define ADIS16260_ALM_MAG1   0x20 /* Alarm 1 magnitude/polarity setting */
  18 #define ADIS16260_ALM_MAG2   0x22 /* Alarm 2 magnitude/polarity setting */
  19 #define ADIS16260_ALM_SMPL1  0x24 /* Alarm 1 dynamic rate of change setting */
  20 #define ADIS16260_ALM_SMPL2  0x26 /* Alarm 2 dynamic rate of change setting */
  21 #define ADIS16260_ALM_CTRL   0x28 /* Alarm control */
  22 #define ADIS16260_AUX_DAC    0x30 /* Auxiliary DAC data */
  23 #define ADIS16260_GPIO_CTRL  0x32 /* Control, digital I/O line */
  24 #define ADIS16260_MSC_CTRL   0x34 /* Control, data ready, self-test settings */
  25 #define ADIS16260_SMPL_PRD   0x36 /* Control, internal sample rate */
  26 #define ADIS16260_SENS_AVG   0x38 /* Control, dynamic range, filtering */
  27 #define ADIS16260_SLP_CNT    0x3A /* Control, sleep mode initiation */
  28 #define ADIS16260_DIAG_STAT  0x3C /* Diagnostic, error flags */
  29 #define ADIS16260_GLOB_CMD   0x3E /* Control, global commands */
  30 #define ADIS16260_LOT_ID1    0x52 /* Lot Identification Code 1 */
  31 #define ADIS16260_LOT_ID2    0x54 /* Lot Identification Code 2 */
  32 #define ADIS16260_PROD_ID    0x56 /* Product identifier;
  33                                    * convert to decimal = 16,265/16,260 */
  34 #define ADIS16260_SERIAL_NUM 0x58 /* Serial number */
  35
  36 #define ADIS16260_OUTPUTS    5
  37
  38 #define ADIS16260_ERROR_ACTIVE                  (1<<14)
  39 #define ADIS16260_NEW_DATA                      (1<<15)
  40
  41 /* MSC_CTRL */
  42 #define ADIS16260_MSC_CTRL_MEM_TEST             (1<<11)
  43 /* Internal self-test enable */
  44 #define ADIS16260_MSC_CTRL_INT_SELF_TEST        (1<<10)
  45 #define ADIS16260_MSC_CTRL_NEG_SELF_TEST        (1<<9)
  46 #define ADIS16260_MSC_CTRL_POS_SELF_TEST        (1<<8)
  47 #define ADIS16260_MSC_CTRL_DATA_RDY_EN          (1<<2)
  48 #define ADIS16260_MSC_CTRL_DATA_RDY_POL_HIGH    (1<<1)
  49 #define ADIS16260_MSC_CTRL_DATA_RDY_DIO2        (1<<0)
  50
  51 /* SMPL_PRD */
  52 /* Time base (tB): 0 = 1.953 ms, 1 = 60.54 ms */
  53 #define ADIS16260_SMPL_PRD_TIME_BASE    (1<<7)
  54 #define ADIS16260_SMPL_PRD_DIV_MASK     0x7F
  55
  56 /* SLP_CNT */
  57 #define ADIS16260_SLP_CNT_POWER_OFF     0x80
  58
  59 /* DIAG_STAT */
  60 #define ADIS16260_DIAG_STAT_ALARM2      (1<<9)
  61 #define ADIS16260_DIAG_STAT_ALARM1      (1<<8)
  62 #define ADIS16260_DIAG_STAT_FLASH_CHK   (1<<6)
  63 #define ADIS16260_DIAG_STAT_SELF_TEST   (1<<5)
  64 #define ADIS16260_DIAG_STAT_OVERFLOW    (1<<4)
  65 #define ADIS16260_DIAG_STAT_SPI_FAIL    (1<<3)
  66 #define ADIS16260_DIAG_STAT_FLASH_UPT   (1<<2)
  67 #define ADIS16260_DIAG_STAT_POWER_HIGH  (1<<1)
  68 #define ADIS16260_DIAG_STAT_POWER_LOW   (1<<0)
  69
  70 /* GLOB_CMD */
  71 #define ADIS16260_GLOB_CMD_SW_RESET     (1<<7)
  72 #define ADIS16260_GLOB_CMD_FLASH_UPD    (1<<3)
  73 #define ADIS16260_GLOB_CMD_DAC_LATCH    (1<<2)
  74 #define ADIS16260_GLOB_CMD_FAC_CALIB    (1<<1)
  75 #define ADIS16260_GLOB_CMD_AUTO_NULL    (1<<0)
  76
  77 #define ADIS16260_MAX_TX 24
  78 #define ADIS16260_MAX_RX 24
  79
  80 #define ADIS16260_SPI_SLOW      (u32)(300 * 1000)
  81 #define ADIS16260_SPI_BURST     (u32)(1000 * 1000)
  82 #define ADIS16260_SPI_FAST      (u32)(2000 * 1000)
  83
  84 /**
  85  * struct adis16260_state - device instance specific data
  86  * @us:                 actual spi_device
  87  * @work_trigger_to_ring: bh for triggered event handling
  88  * @inter:              used to check if new interrupt has been triggered
  89  * @last_timestamp:     passing timestamp from th to bh of interrupt handler
  90  * @indio_dev:          industrial I/O device structure
  91  * @trig:               data ready trigger registered with iio
  92  * @tx:                 transmit buffer
  93  * @rx:                 recieve buffer
  94  * @buf_lock:           mutex to protect tx and rx
  95  **/
  96 struct adis16260_state {
  97         struct spi_device               *us;
  98         struct work_struct              work_trigger_to_ring;
  99         s64                             last_timestamp;
 100         struct iio_dev                  *indio_dev;
 101         struct iio_trigger              *trig;
 102         u8                              *tx;
 103         u8                              *rx;
 104         struct mutex                    buf_lock;
 105 };
 106
 107 int adis16260_set_irq(struct device *dev, bool enable);
 108
 109 #ifdef CONFIG_IIO_RING_BUFFER
 110 /* At the moment triggers are only used for ring buffer
 111  * filling. This may change!
 112  */
 113
 114 #define ADIS16260_SCAN_SUPPLY   0
 115 #define ADIS16260_SCAN_GYRO     1
 116 #define ADIS16260_SCAN_AUX_ADC  2
 117 #define ADIS16260_SCAN_TEMP     3
 118 #define ADIS16260_SCAN_ANGL     4
 119
 120 void adis16260_remove_trigger(struct iio_dev *indio_dev);
 121 int adis16260_probe_trigger(struct iio_dev *indio_dev);
 122
 123 ssize_t adis16260_read_data_from_ring(struct device *dev,
 124                                       struct device_attribute *attr,
 125                                       char *buf);
 126
 127
 128 int adis16260_configure_ring(struct iio_dev *indio_dev);
 129 void adis16260_unconfigure_ring(struct iio_dev *indio_dev);
 130
 131 #else /* CONFIG_IIO_RING_BUFFER */
 132
 133 static inline void adis16260_remove_trigger(struct iio_dev *indio_dev)
 134 {
 135 }
 136
 137 static inline int adis16260_probe_trigger(struct iio_dev *indio_dev)
 138 {
 139         return 0;
 140 }
 141
 142 static inline ssize_t
 143 adis16260_read_data_from_ring(struct device *dev,
 144                               struct device_attribute *attr,
 145                               char *buf)
 146 {
 147         return 0;
 148 }
 149
 150 static int adis16260_configure_ring(struct iio_dev *indio_dev)
 151 {
 152         return 0;
 153 }
 154
 155 static inline void adis16260_unconfigure_ring(struct iio_dev *indio_dev)
 156 {
 157 }
 158
 159 #endif /* CONFIG_IIO_RING_BUFFER */
 160 #endif /* SPI_ADIS16260_H_ */