diff options
Diffstat (limited to 'drivers/staging/iio/accel/adis16240.h')
| -rw-r--r-- | drivers/staging/iio/accel/adis16240.h | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/drivers/staging/iio/accel/adis16240.h b/drivers/staging/iio/accel/adis16240.h new file mode 100644 index 000000000000..dcff43c75235 --- /dev/null +++ b/drivers/staging/iio/accel/adis16240.h @@ -0,0 +1,218 @@ +#ifndef SPI_ADIS16240_H_ +#define SPI_ADIS16240_H_ + +#define ADIS16240_STARTUP_DELAY 220 /* ms */ + +#define ADIS16240_READ_REG(a) a +#define ADIS16240_WRITE_REG(a) ((a) | 0x80) + +/* Flash memory write count */ +#define ADIS16240_FLASH_CNT 0x00 +/* Output, power supply */ +#define ADIS16240_SUPPLY_OUT 0x02 +/* Output, x-axis accelerometer */ +#define ADIS16240_XACCL_OUT 0x04 +/* Output, y-axis accelerometer */ +#define ADIS16240_YACCL_OUT 0x06 +/* Output, z-axis accelerometer */ +#define ADIS16240_ZACCL_OUT 0x08 +/* Output, auxiliary ADC input */ +#define ADIS16240_AUX_ADC 0x0A +/* Output, temperature */ +#define ADIS16240_TEMP_OUT 0x0C +/* Output, x-axis acceleration peak */ +#define ADIS16240_XPEAK_OUT 0x0E +/* Output, y-axis acceleration peak */ +#define ADIS16240_YPEAK_OUT 0x10 +/* Output, z-axis acceleration peak */ +#define ADIS16240_ZPEAK_OUT 0x12 +/* Output, sum-of-squares acceleration peak */ +#define ADIS16240_XYZPEAK_OUT 0x14 +/* Output, Capture Buffer 1, X and Y acceleration */ +#define ADIS16240_CAPT_BUF1 0x16 +/* Output, Capture Buffer 2, Z acceleration */ +#define ADIS16240_CAPT_BUF2 0x18 +/* Diagnostic, error flags */ +#define ADIS16240_DIAG_STAT 0x1A +/* Diagnostic, event counter */ +#define ADIS16240_EVNT_CNTR 0x1C +/* Diagnostic, check sum value from firmware test */ +#define ADIS16240_CHK_SUM 0x1E +/* Calibration, x-axis acceleration offset adjustment */ +#define ADIS16240_XACCL_OFF 0x20 +/* Calibration, y-axis acceleration offset adjustment */ +#define ADIS16240_YACCL_OFF 0x22 +/* Calibration, z-axis acceleration offset adjustment */ +#define ADIS16240_ZACCL_OFF 0x24 +/* Clock, hour and minute */ +#define ADIS16240_CLK_TIME 0x2E +/* Clock, month and day */ +#define ADIS16240_CLK_DATE 0x30 +/* Clock, year */ +#define ADIS16240_CLK_YEAR 0x32 +/* Wake-up setting, hour and minute */ +#define ADIS16240_WAKE_TIME 0x34 +/* Wake-up setting, month and day */ +#define ADIS16240_WAKE_DATE 0x36 +/* Alarm 1 amplitude threshold */ +#define ADIS16240_ALM_MAG1 0x38 +/* Alarm 2 amplitude threshold */ +#define ADIS16240_ALM_MAG2 0x3A +/* Alarm control */ +#define ADIS16240_ALM_CTRL 0x3C +/* Capture, external trigger control */ +#define ADIS16240_XTRIG_CTRL 0x3E +/* Capture, address pointer */ +#define ADIS16240_CAPT_PNTR 0x40 +/* Capture, configuration and control */ +#define ADIS16240_CAPT_CTRL 0x42 +/* General-purpose digital input/output control */ +#define ADIS16240_GPIO_CTRL 0x44 +/* Miscellaneous control */ +#define ADIS16240_MSC_CTRL 0x46 +/* Internal sample period (rate) control */ +#define ADIS16240_SMPL_PRD 0x48 +/* System command */ +#define ADIS16240_GLOB_CMD 0x4A + +#define ADIS16240_OUTPUTS 6 + +/* MSC_CTRL */ +/* Enables sum-of-squares output (XYZPEAK_OUT) */ +#define ADIS16240_MSC_CTRL_XYZPEAK_OUT_EN (1 << 15) +/* Enables peak tracking output (XPEAK_OUT, YPEAK_OUT, and ZPEAK_OUT) */ +#define ADIS16240_MSC_CTRL_X_Y_ZPEAK_OUT_EN (1 << 14) +/* Self-test enable: 1 = apply electrostatic force, 0 = disabled */ +#define ADIS16240_MSC_CTRL_SELF_TEST_EN (1 << 8) +/* Data-ready enable: 1 = enabled, 0 = disabled */ +#define ADIS16240_MSC_CTRL_DATA_RDY_EN (1 << 2) +/* Data-ready polarity: 1 = active high, 0 = active low */ +#define ADIS16240_MSC_CTRL_ACTIVE_HIGH (1 << 1) +/* Data-ready line selection: 1 = DIO2, 0 = DIO1 */ +#define ADIS16240_MSC_CTRL_DATA_RDY_DIO2 (1 << 0) + +/* DIAG_STAT */ +/* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */ +#define ADIS16240_DIAG_STAT_ALARM2 (1<<9) +/* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */ +#define ADIS16240_DIAG_STAT_ALARM1 (1<<8) +/* Capture buffer full: 1 = capture buffer is full */ +#define ADIS16240_DIAG_STAT_CPT_BUF_FUL (1<<7) +/* Flash test, checksum flag: 1 = mismatch, 0 = match */ +#define ADIS16240_DIAG_STAT_CHKSUM (1<<6) +/* Power-on, self-test flag: 1 = failure, 0 = pass */ +#define ADIS16240_DIAG_STAT_PWRON_FAIL (1<<5) +/* Power-on self-test: 1 = in-progress, 0 = complete */ +#define ADIS16240_DIAG_STAT_PWRON_BUSY (1<<4) +/* SPI communications failure */ +#define ADIS16240_DIAG_STAT_SPI_FAIL (1<<3) +/* Flash update failure */ +#define ADIS16240_DIAG_STAT_FLASH_UPT (1<<2) +/* Power supply above 3.625 V */ +#define ADIS16240_DIAG_STAT_POWER_HIGH (1<<1) + /* Power supply below 3.15 V */ +#define ADIS16240_DIAG_STAT_POWER_LOW (1<<0) + +/* GLOB_CMD */ +#define ADIS16240_GLOB_CMD_RESUME (1<<8) +#define ADIS16240_GLOB_CMD_SW_RESET (1<<7) +#define ADIS16240_GLOB_CMD_STANDBY (1<<2) + +#define ADIS16240_ERROR_ACTIVE (1<<14) + +#define ADIS16240_MAX_TX 24 +#define ADIS16240_MAX_RX 24 + +/** + * struct adis16240_state - device instance specific data + * @us: actual spi_device + * @work_trigger_to_ring: bh for triggered event handling + * @work_cont_thresh: CLEAN + * @inter: used to check if new interrupt has been triggered + * @last_timestamp: passing timestamp from th to bh of interrupt handler + * @indio_dev: industrial I/O device structure + * @trig: data ready trigger registered with iio + * @tx: transmit buffer + * @rx: recieve buffer + * @buf_lock: mutex to protect tx and rx + **/ +struct adis16240_state { + struct spi_device *us; + struct work_struct work_trigger_to_ring; + struct iio_work_cont work_cont_thresh; + s64 last_timestamp; + struct iio_dev *indio_dev; + struct iio_trigger *trig; + u8 *tx; + u8 *rx; + struct mutex buf_lock; +}; + +int adis16240_set_irq(struct device *dev, bool enable); + +#ifdef CONFIG_IIO_RING_BUFFER +/* At the moment triggers are only used for ring buffer + * filling. This may change! + */ + +enum adis16240_scan { + ADIS16240_SCAN_SUPPLY, + ADIS16240_SCAN_ACC_X, + ADIS16240_SCAN_ACC_Y, + ADIS16240_SCAN_ACC_Z, + ADIS16240_SCAN_AUX_ADC, + ADIS16240_SCAN_TEMP, +}; + +void adis16240_remove_trigger(struct iio_dev *indio_dev); +int adis16240_probe_trigger(struct iio_dev *indio_dev); + +ssize_t adis16240_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf); + + +int adis16240_configure_ring(struct iio_dev *indio_dev); +void adis16240_unconfigure_ring(struct iio_dev *indio_dev); + +int adis16240_initialize_ring(struct iio_ring_buffer *ring); +void adis16240_uninitialize_ring(struct iio_ring_buffer *ring); +#else /* CONFIG_IIO_RING_BUFFER */ + +static inline void adis16240_remove_trigger(struct iio_dev *indio_dev) +{ +} + +static inline int adis16240_probe_trigger(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline ssize_t +adis16240_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return 0; +} + +static int adis16240_configure_ring(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline void adis16240_unconfigure_ring(struct iio_dev *indio_dev) +{ +} + +static inline int adis16240_initialize_ring(struct iio_ring_buffer *ring) +{ + return 0; +} + +static inline void adis16240_uninitialize_ring(struct iio_ring_buffer *ring) +{ +} + +#endif /* CONFIG_IIO_RING_BUFFER */ +#endif /* SPI_ADIS16240_H_ */ |