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Diffstat (limited to '')
| -rw-r--r-- | drivers/staging/iio/accel/adis16204.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/drivers/staging/iio/accel/adis16204.h b/drivers/staging/iio/accel/adis16204.h new file mode 100644 index 000000000000..e9ed7cb048cf --- /dev/null +++ b/drivers/staging/iio/accel/adis16204.h @@ -0,0 +1,151 @@ +#ifndef SPI_ADIS16204_H_ +#define SPI_ADIS16204_H_ + +#define ADIS16204_STARTUP_DELAY 220 /* ms */ + +#define ADIS16204_READ_REG(a) a +#define ADIS16204_WRITE_REG(a) ((a) | 0x80) + +#define ADIS16204_FLASH_CNT 0x00 /* Flash memory write count */ +#define ADIS16204_SUPPLY_OUT 0x02 /* Output, power supply */ +#define ADIS16204_XACCL_OUT 0x04 /* Output, x-axis accelerometer */ +#define ADIS16204_YACCL_OUT 0x06 /* Output, y-axis accelerometer */ +#define ADIS16204_AUX_ADC 0x08 /* Output, auxiliary ADC input */ +#define ADIS16204_TEMP_OUT 0x0A /* Output, temperature */ +#define ADIS16204_X_PEAK_OUT 0x0C /* Twos complement */ +#define ADIS16204_Y_PEAK_OUT 0x0E /* Twos complement */ +#define ADIS16204_XACCL_NULL 0x10 /* Calibration, x-axis acceleration offset null */ +#define ADIS16204_YACCL_NULL 0x12 /* Calibration, y-axis acceleration offset null */ +#define ADIS16204_XACCL_SCALE 0x14 /* X-axis scale factor calibration register */ +#define ADIS16204_YACCL_SCALE 0x16 /* Y-axis scale factor calibration register */ +#define ADIS16204_XY_RSS_OUT 0x18 /* XY combined acceleration (RSS) */ +#define ADIS16204_XY_PEAK_OUT 0x1A /* Peak, XY combined output (RSS) */ +#define ADIS16204_CAP_BUF_1 0x1C /* Capture buffer output register 1 */ +#define ADIS16204_CAP_BUF_2 0x1E /* Capture buffer output register 2 */ +#define ADIS16204_ALM_MAG1 0x20 /* Alarm 1 amplitude threshold */ +#define ADIS16204_ALM_MAG2 0x22 /* Alarm 2 amplitude threshold */ +#define ADIS16204_ALM_CTRL 0x28 /* Alarm control */ +#define ADIS16204_CAPT_PNTR 0x2A /* Capture register address pointer */ +#define ADIS16204_AUX_DAC 0x30 /* Auxiliary DAC data */ +#define ADIS16204_GPIO_CTRL 0x32 /* General-purpose digital input/output control */ +#define ADIS16204_MSC_CTRL 0x34 /* Miscellaneous control */ +#define ADIS16204_SMPL_PRD 0x36 /* Internal sample period (rate) control */ +#define ADIS16204_AVG_CNT 0x38 /* Operation, filter configuration */ +#define ADIS16204_SLP_CNT 0x3A /* Operation, sleep mode control */ +#define ADIS16204_DIAG_STAT 0x3C /* Diagnostics, system status register */ +#define ADIS16204_GLOB_CMD 0x3E /* Operation, system command register */ + +#define ADIS16204_OUTPUTS 5 + +/* MSC_CTRL */ +#define ADIS16204_MSC_CTRL_PWRUP_SELF_TEST (1 << 10) /* Self-test at power-on: 1 = disabled, 0 = enabled */ +#define ADIS16204_MSC_CTRL_SELF_TEST_EN (1 << 8) /* Self-test enable */ +#define ADIS16204_MSC_CTRL_DATA_RDY_EN (1 << 2) /* Data-ready enable: 1 = enabled, 0 = disabled */ +#define ADIS16204_MSC_CTRL_ACTIVE_HIGH (1 << 1) /* Data-ready polarity: 1 = active high, 0 = active low */ +#define ADIS16204_MSC_CTRL_DATA_RDY_DIO2 (1 << 0) /* Data-ready line selection: 1 = DIO2, 0 = DIO1 */ + +/* DIAG_STAT */ +#define ADIS16204_DIAG_STAT_ALARM2 (1<<9) /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */ +#define ADIS16204_DIAG_STAT_ALARM1 (1<<8) /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */ +#define ADIS16204_DIAG_STAT_SELFTEST_FAIL (1<<5) /* Self-test diagnostic error flag: 1 = error condition, + 0 = normal operation */ +#define ADIS16204_DIAG_STAT_SPI_FAIL (1<<3) /* SPI communications failure */ +#define ADIS16204_DIAG_STAT_FLASH_UPT (1<<2) /* Flash update failure */ +#define ADIS16204_DIAG_STAT_POWER_HIGH (1<<1) /* Power supply above 3.625 V */ +#define ADIS16204_DIAG_STAT_POWER_LOW (1<<0) /* Power supply below 2.975 V */ + +/* GLOB_CMD */ +#define ADIS16204_GLOB_CMD_SW_RESET (1<<7) +#define ADIS16204_GLOB_CMD_CLEAR_STAT (1<<4) +#define ADIS16204_GLOB_CMD_FACTORY_CAL (1<<1) + +#define ADIS16204_MAX_TX 24 +#define ADIS16204_MAX_RX 24 + +#define ADIS16204_ERROR_ACTIVE (1<<14) + +/** + * struct adis16204_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 adis16204_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 adis16204_set_irq(struct device *dev, bool enable); + +#ifdef CONFIG_IIO_RING_BUFFER +enum adis16204_scan { + ADIS16204_SCAN_SUPPLY, + ADIS16204_SCAN_ACC_X, + ADIS16204_SCAN_ACC_Y, + ADIS16204_SCAN_AUX_ADC, + ADIS16204_SCAN_TEMP, +}; + +void adis16204_remove_trigger(struct iio_dev *indio_dev); +int adis16204_probe_trigger(struct iio_dev *indio_dev); + +ssize_t adis16204_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf); + +int adis16204_configure_ring(struct iio_dev *indio_dev); +void adis16204_unconfigure_ring(struct iio_dev *indio_dev); + +int adis16204_initialize_ring(struct iio_ring_buffer *ring); +void adis16204_uninitialize_ring(struct iio_ring_buffer *ring); +#else /* CONFIG_IIO_RING_BUFFER */ + +static inline void adis16204_remove_trigger(struct iio_dev *indio_dev) +{ +} + +static inline int adis16204_probe_trigger(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline ssize_t +adis16204_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return 0; +} + +static int adis16204_configure_ring(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline void adis16204_unconfigure_ring(struct iio_dev *indio_dev) +{ +} + +static inline int adis16204_initialize_ring(struct iio_ring_buffer *ring) +{ + return 0; +} + +static inline void adis16204_uninitialize_ring(struct iio_ring_buffer *ring) +{ +} + +#endif /* CONFIG_IIO_RING_BUFFER */ +#endif /* SPI_ADIS16204_H_ */ |