diff options
Diffstat (limited to 'drivers/staging/iio/gyro/adis16260.h')
| -rw-r--r-- | drivers/staging/iio/gyro/adis16260.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/drivers/staging/iio/gyro/adis16260.h b/drivers/staging/iio/gyro/adis16260.h new file mode 100644 index 000000000000..f19efb4c91ce --- /dev/null +++ b/drivers/staging/iio/gyro/adis16260.h @@ -0,0 +1,175 @@ +#ifndef SPI_ADIS16260_H_ +#define SPI_ADIS16260_H_ + +#define ADIS16260_STARTUP_DELAY 220 /* ms */ + +#define ADIS16260_READ_REG(a) a +#define ADIS16260_WRITE_REG(a) ((a) | 0x80) + +#define ADIS16260_FLASH_CNT 0x00 /* Flash memory write count */ +#define ADIS16260_SUPPLY_OUT 0x02 /* Power supply measurement */ +#define ADIS16260_GYRO_OUT 0x04 /* X-axis gyroscope output */ +#define ADIS16260_AUX_ADC 0x0A /* analog input channel measurement */ +#define ADIS16260_TEMP_OUT 0x0C /* internal temperature measurement */ +#define ADIS16260_ANGL_OUT 0x0E /* angle displacement */ +#define ADIS16260_GYRO_OFF 0x14 /* Calibration, offset/bias adjustment */ +#define ADIS16260_GYRO_SCALE 0x16 /* Calibration, scale adjustment */ +#define ADIS16260_ALM_MAG1 0x20 /* Alarm 1 magnitude/polarity setting */ +#define ADIS16260_ALM_MAG2 0x22 /* Alarm 2 magnitude/polarity setting */ +#define ADIS16260_ALM_SMPL1 0x24 /* Alarm 1 dynamic rate of change setting */ +#define ADIS16260_ALM_SMPL2 0x26 /* Alarm 2 dynamic rate of change setting */ +#define ADIS16260_ALM_CTRL 0x28 /* Alarm control */ +#define ADIS16260_AUX_DAC 0x30 /* Auxiliary DAC data */ +#define ADIS16260_GPIO_CTRL 0x32 /* Control, digital I/O line */ +#define ADIS16260_MSC_CTRL 0x34 /* Control, data ready, self-test settings */ +#define ADIS16260_SMPL_PRD 0x36 /* Control, internal sample rate */ +#define ADIS16260_SENS_AVG 0x38 /* Control, dynamic range, filtering */ +#define ADIS16260_SLP_CNT 0x3A /* Control, sleep mode initiation */ +#define ADIS16260_DIAG_STAT 0x3C /* Diagnostic, error flags */ +#define ADIS16260_GLOB_CMD 0x3E /* Control, global commands */ +#define ADIS16260_LOT_ID1 0x52 /* Lot Identification Code 1 */ +#define ADIS16260_LOT_ID2 0x54 /* Lot Identification Code 2 */ +#define ADIS16260_PROD_ID 0x56 /* Product identifier; + * convert to decimal = 16,265/16,260 */ +#define ADIS16260_SERIAL_NUM 0x58 /* Serial number */ + +#define ADIS16260_OUTPUTS 5 + +#define ADIS16260_ERROR_ACTIVE (1<<14) +#define ADIS16260_NEW_DATA (1<<15) + +/* MSC_CTRL */ +#define ADIS16260_MSC_CTRL_MEM_TEST (1<<11) +/* Internal self-test enable */ +#define ADIS16260_MSC_CTRL_INT_SELF_TEST (1<<10) +#define ADIS16260_MSC_CTRL_NEG_SELF_TEST (1<<9) +#define ADIS16260_MSC_CTRL_POS_SELF_TEST (1<<8) +#define ADIS16260_MSC_CTRL_DATA_RDY_EN (1<<2) +#define ADIS16260_MSC_CTRL_DATA_RDY_POL_HIGH (1<<1) +#define ADIS16260_MSC_CTRL_DATA_RDY_DIO2 (1<<0) + +/* SMPL_PRD */ +/* Time base (tB): 0 = 1.953 ms, 1 = 60.54 ms */ +#define ADIS16260_SMPL_PRD_TIME_BASE (1<<7) +#define ADIS16260_SMPL_PRD_DIV_MASK 0x7F + +/* SLP_CNT */ +#define ADIS16260_SLP_CNT_POWER_OFF 0x80 + +/* DIAG_STAT */ +#define ADIS16260_DIAG_STAT_ALARM2 (1<<9) +#define ADIS16260_DIAG_STAT_ALARM1 (1<<8) +#define ADIS16260_DIAG_STAT_FLASH_CHK (1<<6) +#define ADIS16260_DIAG_STAT_SELF_TEST (1<<5) +#define ADIS16260_DIAG_STAT_OVERFLOW (1<<4) +#define ADIS16260_DIAG_STAT_SPI_FAIL (1<<3) +#define ADIS16260_DIAG_STAT_FLASH_UPT (1<<2) +#define ADIS16260_DIAG_STAT_POWER_HIGH (1<<1) +#define ADIS16260_DIAG_STAT_POWER_LOW (1<<0) + +/* GLOB_CMD */ +#define ADIS16260_GLOB_CMD_SW_RESET (1<<7) +#define ADIS16260_GLOB_CMD_FLASH_UPD (1<<3) +#define ADIS16260_GLOB_CMD_DAC_LATCH (1<<2) +#define ADIS16260_GLOB_CMD_FAC_CALIB (1<<1) +#define ADIS16260_GLOB_CMD_AUTO_NULL (1<<0) + +#define ADIS16260_MAX_TX 24 +#define ADIS16260_MAX_RX 24 + +#define ADIS16260_SPI_SLOW (u32)(300 * 1000) +#define ADIS16260_SPI_BURST (u32)(1000 * 1000) +#define ADIS16260_SPI_FAST (u32)(2000 * 1000) + +/** + * struct adis16260_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 adis16260_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 adis16260_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 adis16260_scan { + ADIS16260_SCAN_SUPPLY, + ADIS16260_SCAN_GYRO, + ADIS16260_SCAN_AUX_ADC, + ADIS16260_SCAN_TEMP, + ADIS16260_SCAN_ANGL, +}; + +void adis16260_remove_trigger(struct iio_dev *indio_dev); +int adis16260_probe_trigger(struct iio_dev *indio_dev); + +ssize_t adis16260_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf); + + +int adis16260_configure_ring(struct iio_dev *indio_dev); +void adis16260_unconfigure_ring(struct iio_dev *indio_dev); + +int adis16260_initialize_ring(struct iio_ring_buffer *ring); +void adis16260_uninitialize_ring(struct iio_ring_buffer *ring); +#else /* CONFIG_IIO_RING_BUFFER */ + +static inline void adis16260_remove_trigger(struct iio_dev *indio_dev) +{ +} + +static inline int adis16260_probe_trigger(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline ssize_t +adis16260_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return 0; +} + +static int adis16260_configure_ring(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline void adis16260_unconfigure_ring(struct iio_dev *indio_dev) +{ +} + +static inline int adis16260_initialize_ring(struct iio_ring_buffer *ring) +{ + return 0; +} + +static inline void adis16260_uninitialize_ring(struct iio_ring_buffer *ring) +{ +} + +#endif /* CONFIG_IIO_RING_BUFFER */ +#endif /* SPI_ADIS16260_H_ */ |