drivers/staging/iio/accel/adis16240.h

   1 #ifndef SPI_ADIS16240_H_
   2 #define SPI_ADIS16240_H_
   3
   4 #define ADIS16240_STARTUP_DELAY 220 /* ms */
   5
   6 #define ADIS16240_READ_REG(a)    a
   7 #define ADIS16240_WRITE_REG(a) ((a) | 0x80)
   8
   9 /* Flash memory write count */
  10 #define ADIS16240_FLASH_CNT      0x00
  11 /* Output, power supply */
  12 #define ADIS16240_SUPPLY_OUT     0x02
  13 /* Output, x-axis accelerometer */
  14 #define ADIS16240_XACCL_OUT      0x04
  15 /* Output, y-axis accelerometer */
  16 #define ADIS16240_YACCL_OUT      0x06
  17 /* Output, z-axis accelerometer */
  18 #define ADIS16240_ZACCL_OUT      0x08
  19 /* Output, auxiliary ADC input */
  20 #define ADIS16240_AUX_ADC        0x0A
  21 /* Output, temperature */
  22 #define ADIS16240_TEMP_OUT       0x0C
  23 /* Output, x-axis acceleration peak */
  24 #define ADIS16240_XPEAK_OUT      0x0E
  25 /* Output, y-axis acceleration peak */
  26 #define ADIS16240_YPEAK_OUT      0x10
  27 /* Output, z-axis acceleration peak */
  28 #define ADIS16240_ZPEAK_OUT      0x12
  29 /* Output, sum-of-squares acceleration peak */
  30 #define ADIS16240_XYZPEAK_OUT    0x14
  31 /* Output, Capture Buffer 1, X and Y acceleration */
  32 #define ADIS16240_CAPT_BUF1      0x16
  33 /* Output, Capture Buffer 2, Z acceleration */
  34 #define ADIS16240_CAPT_BUF2      0x18
  35 /* Diagnostic, error flags */
  36 #define ADIS16240_DIAG_STAT      0x1A
  37 /* Diagnostic, event counter */
  38 #define ADIS16240_EVNT_CNTR      0x1C
  39 /* Diagnostic, check sum value from firmware test */
  40 #define ADIS16240_CHK_SUM        0x1E
  41 /* Calibration, x-axis acceleration offset adjustment */
  42 #define ADIS16240_XACCL_OFF      0x20
  43 /* Calibration, y-axis acceleration offset adjustment */
  44 #define ADIS16240_YACCL_OFF      0x22
  45 /* Calibration, z-axis acceleration offset adjustment */
  46 #define ADIS16240_ZACCL_OFF      0x24
  47 /* Clock, hour and minute */
  48 #define ADIS16240_CLK_TIME       0x2E
  49 /* Clock, month and day */
  50 #define ADIS16240_CLK_DATE       0x30
  51 /* Clock, year */
  52 #define ADIS16240_CLK_YEAR       0x32
  53 /* Wake-up setting, hour and minute */
  54 #define ADIS16240_WAKE_TIME      0x34
  55 /* Wake-up setting, month and day */
  56 #define ADIS16240_WAKE_DATE      0x36
  57 /* Alarm 1 amplitude threshold */
  58 #define ADIS16240_ALM_MAG1       0x38
  59 /* Alarm 2 amplitude threshold */
  60 #define ADIS16240_ALM_MAG2       0x3A
  61 /* Alarm control */
  62 #define ADIS16240_ALM_CTRL       0x3C
  63 /* Capture, external trigger control */
  64 #define ADIS16240_XTRIG_CTRL     0x3E
  65 /* Capture, address pointer */
  66 #define ADIS16240_CAPT_PNTR      0x40
  67 /* Capture, configuration and control */
  68 #define ADIS16240_CAPT_CTRL      0x42
  69 /* General-purpose digital input/output control */
  70 #define ADIS16240_GPIO_CTRL      0x44
  71 /* Miscellaneous control */
  72 #define ADIS16240_MSC_CTRL       0x46
  73 /* Internal sample period (rate) control */
  74 #define ADIS16240_SMPL_PRD       0x48
  75 /* System command */
  76 #define ADIS16240_GLOB_CMD       0x4A
  77
  78 #define ADIS16240_OUTPUTS        6
  79
  80 /* MSC_CTRL */
  81 /* Enables sum-of-squares output (XYZPEAK_OUT) */
  82 #define ADIS16240_MSC_CTRL_XYZPEAK_OUT_EN       (1 << 15)
  83 /* Enables peak tracking output (XPEAK_OUT, YPEAK_OUT, and ZPEAK_OUT) */
  84 #define ADIS16240_MSC_CTRL_X_Y_ZPEAK_OUT_EN     (1 << 14)
  85 /* Self-test enable: 1 = apply electrostatic force, 0 = disabled */
  86 #define ADIS16240_MSC_CTRL_SELF_TEST_EN         (1 << 8)
  87 /* Data-ready enable: 1 = enabled, 0 = disabled */
  88 #define ADIS16240_MSC_CTRL_DATA_RDY_EN          (1 << 2)
  89 /* Data-ready polarity: 1 = active high, 0 = active low */
  90 #define ADIS16240_MSC_CTRL_ACTIVE_HIGH          (1 << 1)
  91 /* Data-ready line selection: 1 = DIO2, 0 = DIO1 */
  92 #define ADIS16240_MSC_CTRL_DATA_RDY_DIO2        (1 << 0)
  93
  94 /* DIAG_STAT */
  95 /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
  96 #define ADIS16240_DIAG_STAT_ALARM2      (1<<9)
  97 /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
  98 #define ADIS16240_DIAG_STAT_ALARM1      (1<<8)
  99 /* Capture buffer full: 1 = capture buffer is full */
 100 #define ADIS16240_DIAG_STAT_CPT_BUF_FUL (1<<7)
 101 /* Flash test, checksum flag: 1 = mismatch, 0 = match */
 102 #define ADIS16240_DIAG_STAT_CHKSUM      (1<<6)
 103 /* Power-on, self-test flag: 1 = failure, 0 = pass */
 104 #define ADIS16240_DIAG_STAT_PWRON_FAIL  (1<<5)
 105 /* Power-on self-test: 1 = in-progress, 0 = complete */
 106 #define ADIS16240_DIAG_STAT_PWRON_BUSY  (1<<4)
 107 /* SPI communications failure */
 108 #define ADIS16240_DIAG_STAT_SPI_FAIL    (1<<3)
 109 /* Flash update failure */
 110 #define ADIS16240_DIAG_STAT_FLASH_UPT   (1<<2)
 111 /* Power supply above 3.625 V */
 112 #define ADIS16240_DIAG_STAT_POWER_HIGH  (1<<1)
 113  /* Power supply below 3.15 V */
 114 #define ADIS16240_DIAG_STAT_POWER_LOW   (1<<0)
 115
 116 /* GLOB_CMD */
 117 #define ADIS16240_GLOB_CMD_RESUME       (1<<8)
 118 #define ADIS16240_GLOB_CMD_SW_RESET     (1<<7)
 119 #define ADIS16240_GLOB_CMD_STANDBY      (1<<2)
 120
 121 #define ADIS16240_ERROR_ACTIVE          (1<<14)
 122
 123 #define ADIS16240_MAX_TX 24
 124 #define ADIS16240_MAX_RX 24
 125
 126 /**
 127  * struct adis16240_state - device instance specific data
 128  * @us:                 actual spi_device
 129  * @work_trigger_to_ring: bh for triggered event handling
 130  * @work_cont_thresh: CLEAN
 131  * @inter:              used to check if new interrupt has been triggered
 132  * @last_timestamp:     passing timestamp from th to bh of interrupt handler
 133  * @indio_dev:          industrial I/O device structure
 134  * @trig:               data ready trigger registered with iio
 135  * @tx:                 transmit buffer
 136  * @rx:                 recieve buffer
 137  * @buf_lock:           mutex to protect tx and rx
 138  **/
 139 struct adis16240_state {
 140         struct spi_device               *us;
 141         struct work_struct              work_trigger_to_ring;
 142         struct iio_work_cont            work_cont_thresh;
 143         s64                             last_timestamp;
 144         struct iio_dev                  *indio_dev;
 145         struct iio_trigger              *trig;
 146         u8                              *tx;
 147         u8                              *rx;
 148         struct mutex                    buf_lock;
 149 };
 150
 151 int adis16240_set_irq(struct device *dev, bool enable);
 152
 153 #ifdef CONFIG_IIO_RING_BUFFER
 154 /* At the moment triggers are only used for ring buffer
 155  * filling. This may change!
 156  */
 157
 158 enum adis16240_scan {
 159         ADIS16240_SCAN_SUPPLY,
 160         ADIS16240_SCAN_ACC_X,
 161         ADIS16240_SCAN_ACC_Y,
 162         ADIS16240_SCAN_ACC_Z,
 163         ADIS16240_SCAN_AUX_ADC,
 164         ADIS16240_SCAN_TEMP,
 165 };
 166
 167 void adis16240_remove_trigger(struct iio_dev *indio_dev);
 168 int adis16240_probe_trigger(struct iio_dev *indio_dev);
 169
 170 ssize_t adis16240_read_data_from_ring(struct device *dev,
 171                                       struct device_attribute *attr,
 172                                       char *buf);
 173
 174
 175 int adis16240_configure_ring(struct iio_dev *indio_dev);
 176 void adis16240_unconfigure_ring(struct iio_dev *indio_dev);
 177
 178 int adis16240_initialize_ring(struct iio_ring_buffer *ring);
 179 void adis16240_uninitialize_ring(struct iio_ring_buffer *ring);
 180 #else /* CONFIG_IIO_RING_BUFFER */
 181
 182 static inline void adis16240_remove_trigger(struct iio_dev *indio_dev)
 183 {
 184 }
 185
 186 static inline int adis16240_probe_trigger(struct iio_dev *indio_dev)
 187 {
 188         return 0;
 189 }
 190
 191 static inline ssize_t
 192 adis16240_read_data_from_ring(struct device *dev,
 193                               struct device_attribute *attr,
 194                               char *buf)
 195 {
 196         return 0;
 197 }
 198
 199 static int adis16240_configure_ring(struct iio_dev *indio_dev)
 200 {
 201         return 0;
 202 }
 203
 204 static inline void adis16240_unconfigure_ring(struct iio_dev *indio_dev)
 205 {
 206 }
 207
 208 static inline int adis16240_initialize_ring(struct iio_ring_buffer *ring)
 209 {
 210         return 0;
 211 }
 212
 213 static inline void adis16240_uninitialize_ring(struct iio_ring_buffer *ring)
 214 {
 215 }
 216
 217 #endif /* CONFIG_IIO_RING_BUFFER */
 218 #endif /* SPI_ADIS16240_H_ */