| #ifndef SPI_ADIS16251_H_ |
| #define SPI_ADIS16251_H_ |
| |
| #define ADIS16251_STARTUP_DELAY 220 /* ms */ |
| |
| #define ADIS16251_READ_REG(a) a |
| #define ADIS16251_WRITE_REG(a) ((a) | 0x80) |
| |
| #define ADIS16251_ENDURANCE 0x00 /* Flash memory write count */ |
| #define ADIS16251_SUPPLY_OUT 0x02 /* Power supply measurement */ |
| #define ADIS16251_GYRO_OUT 0x04 /* X-axis gyroscope output */ |
| #define ADIS16251_AUX_ADC 0x0A /* analog input channel measurement */ |
| #define ADIS16251_TEMP_OUT 0x0C /* internal temperature measurement */ |
| #define ADIS16251_ANGL_OUT 0x0E /* angle displacement */ |
| #define ADIS16251_GYRO_OFF 0x14 /* Calibration, offset/bias adjustment */ |
| #define ADIS16251_GYRO_SCALE 0x16 /* Calibration, scale adjustment */ |
| #define ADIS16251_ALM_MAG1 0x20 /* Alarm 1 magnitude/polarity setting */ |
| #define ADIS16251_ALM_MAG2 0x22 /* Alarm 2 magnitude/polarity setting */ |
| #define ADIS16251_ALM_SMPL1 0x24 /* Alarm 1 dynamic rate of change setting */ |
| #define ADIS16251_ALM_SMPL2 0x26 /* Alarm 2 dynamic rate of change setting */ |
| #define ADIS16251_ALM_CTRL 0x28 /* Alarm control */ |
| #define ADIS16251_AUX_DAC 0x30 /* Auxiliary DAC data */ |
| #define ADIS16251_GPIO_CTRL 0x32 /* Control, digital I/O line */ |
| #define ADIS16251_MSC_CTRL 0x34 /* Control, data ready, self-test settings */ |
| #define ADIS16251_SMPL_PRD 0x36 /* Control, internal sample rate */ |
| #define ADIS16251_SENS_AVG 0x38 /* Control, dynamic range, filtering */ |
| #define ADIS16251_SLP_CNT 0x3A /* Control, sleep mode initiation */ |
| #define ADIS16251_DIAG_STAT 0x3C /* Diagnostic, error flags */ |
| #define ADIS16251_GLOB_CMD 0x3E /* Control, global commands */ |
| |
| #define ADIS16251_ERROR_ACTIVE (1<<14) |
| #define ADIS16251_NEW_DATA (1<<14) |
| |
| /* MSC_CTRL */ |
| #define ADIS16251_MSC_CTRL_INT_SELF_TEST (1<<10) /* Internal self-test enable */ |
| #define ADIS16251_MSC_CTRL_NEG_SELF_TEST (1<<9) |
| #define ADIS16251_MSC_CTRL_POS_SELF_TEST (1<<8) |
| #define ADIS16251_MSC_CTRL_DATA_RDY_EN (1<<2) |
| #define ADIS16251_MSC_CTRL_DATA_RDY_POL_HIGH (1<<1) |
| #define ADIS16251_MSC_CTRL_DATA_RDY_DIO2 (1<<0) |
| |
| /* SMPL_PRD */ |
| #define ADIS16251_SMPL_PRD_TIME_BASE (1<<7) /* Time base (tB): 0 = 1.953 ms, 1 = 60.54 ms */ |
| #define ADIS16251_SMPL_PRD_DIV_MASK 0x7F |
| |
| /* SLP_CNT */ |
| #define ADIS16251_SLP_CNT_POWER_OFF 0x80 |
| |
| /* DIAG_STAT */ |
| #define ADIS16251_DIAG_STAT_ALARM2 (1<<9) |
| #define ADIS16251_DIAG_STAT_ALARM1 (1<<8) |
| #define ADIS16251_DIAG_STAT_SELF_TEST (1<<5) |
| #define ADIS16251_DIAG_STAT_OVERFLOW (1<<4) |
| #define ADIS16251_DIAG_STAT_SPI_FAIL (1<<3) |
| #define ADIS16251_DIAG_STAT_FLASH_UPT (1<<2) |
| #define ADIS16251_DIAG_STAT_POWER_HIGH (1<<1) |
| #define ADIS16251_DIAG_STAT_POWER_LOW (1<<0) |
| |
| #define ADIS16251_DIAG_STAT_ERR_MASK (ADIS16251_DIAG_STAT_ALARM2 | \ |
| ADIS16251_DIAG_STAT_ALARM1 | \ |
| ADIS16251_DIAG_STAT_SELF_TEST | \ |
| ADIS16251_DIAG_STAT_OVERFLOW | \ |
| ADIS16251_DIAG_STAT_SPI_FAIL | \ |
| ADIS16251_DIAG_STAT_FLASH_UPT | \ |
| ADIS16251_DIAG_STAT_POWER_HIGH | \ |
| ADIS16251_DIAG_STAT_POWER_LOW) |
| |
| /* GLOB_CMD */ |
| #define ADIS16251_GLOB_CMD_SW_RESET (1<<7) |
| #define ADIS16251_GLOB_CMD_FLASH_UPD (1<<3) |
| #define ADIS16251_GLOB_CMD_DAC_LATCH (1<<2) |
| #define ADIS16251_GLOB_CMD_FAC_CALIB (1<<1) |
| #define ADIS16251_GLOB_CMD_AUTO_NULL (1<<0) |
| |
| #define ADIS16251_MAX_TX 24 |
| #define ADIS16251_MAX_RX 24 |
| |
| #define ADIS16251_SPI_SLOW (u32)(300 * 1000) |
| #define ADIS16251_SPI_BURST (u32)(1000 * 1000) |
| #define ADIS16251_SPI_FAST (u32)(2000 * 1000) |
| |
| /** |
| * struct adis16251_state - device instance specific data |
| * @us: actual spi_device |
| * @work_trigger_to_ring: bh for triggered event handling |
| * @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 adis16251_state { |
| struct spi_device *us; |
| struct work_struct work_trigger_to_ring; |
| s64 last_timestamp; |
| struct iio_dev *indio_dev; |
| struct iio_trigger *trig; |
| u8 *tx; |
| u8 *rx; |
| struct mutex buf_lock; |
| }; |
| |
| int adis16251_spi_write_reg_8(struct device *dev, |
| u8 reg_address, |
| u8 val); |
| |
| int adis16251_spi_read_burst(struct device *dev, u8 *rx); |
| |
| int adis16251_spi_read_sequence(struct device *dev, |
| u8 *tx, u8 *rx, int num); |
| |
| int adis16251_set_irq(struct device *dev, bool enable); |
| |
| int adis16251_reset(struct device *dev); |
| |
| int adis16251_stop_device(struct device *dev); |
| |
| int adis16251_check_status(struct device *dev); |
| |
| #if defined(CONFIG_IIO_RING_BUFFER) && defined(THIS_HAS_RING_BUFFER_SUPPORT) |
| /* At the moment triggers are only used for ring buffer |
| * filling. This may change! |
| */ |
| |
| enum adis16251_scan { |
| ADIS16251_SCAN_SUPPLY, |
| ADIS16251_SCAN_GYRO, |
| ADIS16251_SCAN_TEMP, |
| ADIS16251_SCAN_ADC_0, |
| }; |
| |
| void adis16251_remove_trigger(struct iio_dev *indio_dev); |
| int adis16251_probe_trigger(struct iio_dev *indio_dev); |
| |
| ssize_t adis16251_read_data_from_ring(struct device *dev, |
| struct device_attribute *attr, |
| char *buf); |
| |
| |
| int adis16251_configure_ring(struct iio_dev *indio_dev); |
| void adis16251_unconfigure_ring(struct iio_dev *indio_dev); |
| |
| int adis16251_initialize_ring(struct iio_ring_buffer *ring); |
| void adis16251_uninitialize_ring(struct iio_ring_buffer *ring); |
| #else /* CONFIG_IIO_RING_BUFFER */ |
| |
| static inline void adis16251_remove_trigger(struct iio_dev *indio_dev) |
| { |
| } |
| |
| static inline int adis16251_probe_trigger(struct iio_dev *indio_dev) |
| { |
| return 0; |
| } |
| |
| static inline ssize_t |
| adis16251_read_data_from_ring(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return 0; |
| } |
| |
| static int adis16251_configure_ring(struct iio_dev *indio_dev) |
| { |
| return 0; |
| } |
| |
| static inline void adis16251_unconfigure_ring(struct iio_dev *indio_dev) |
| { |
| } |
| |
| static inline int adis16251_initialize_ring(struct iio_ring_buffer *ring) |
| { |
| return 0; |
| } |
| |
| static inline void adis16251_uninitialize_ring(struct iio_ring_buffer *ring) |
| { |
| } |
| |
| #endif /* CONFIG_IIO_RING_BUFFER */ |
| #endif /* SPI_ADIS16251_H_ */ |