diff options
Diffstat (limited to 'drivers/staging/iio/accel/adis16209.h')
| -rw-r--r-- | drivers/staging/iio/accel/adis16209.h | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/drivers/staging/iio/accel/adis16209.h b/drivers/staging/iio/accel/adis16209.h new file mode 100644 index 000000000000..877fd2a48380 --- /dev/null +++ b/drivers/staging/iio/accel/adis16209.h @@ -0,0 +1,193 @@ +#ifndef SPI_ADIS16209_H_ +#define SPI_ADIS16209_H_ + +#define ADIS16209_STARTUP_DELAY 220 /* ms */ + +#define ADIS16209_READ_REG(a) a +#define ADIS16209_WRITE_REG(a) ((a) | 0x80) + +/* Flash memory write count */ +#define ADIS16209_FLASH_CNT 0x00 +/* Output, power supply */ +#define ADIS16209_SUPPLY_OUT 0x02 +/* Output, x-axis accelerometer */ +#define ADIS16209_XACCL_OUT 0x04 +/* Output, y-axis accelerometer */ +#define ADIS16209_YACCL_OUT 0x06 +/* Output, auxiliary ADC input */ +#define ADIS16209_AUX_ADC 0x08 +/* Output, temperature */ +#define ADIS16209_TEMP_OUT 0x0A +/* Output, x-axis inclination */ +#define ADIS16209_XINCL_OUT 0x0C +/* Output, y-axis inclination */ +#define ADIS16209_YINCL_OUT 0x0E +/* Output, +/-180 vertical rotational position */ +#define ADIS16209_ROT_OUT 0x10 +/* Calibration, x-axis acceleration offset null */ +#define ADIS16209_XACCL_NULL 0x12 +/* Calibration, y-axis acceleration offset null */ +#define ADIS16209_YACCL_NULL 0x14 +/* Calibration, x-axis inclination offset null */ +#define ADIS16209_XINCL_NULL 0x16 +/* Calibration, y-axis inclination offset null */ +#define ADIS16209_YINCL_NULL 0x18 +/* Calibration, vertical rotation offset null */ +#define ADIS16209_ROT_NULL 0x1A +/* Alarm 1 amplitude threshold */ +#define ADIS16209_ALM_MAG1 0x20 +/* Alarm 2 amplitude threshold */ +#define ADIS16209_ALM_MAG2 0x22 +/* Alarm 1, sample period */ +#define ADIS16209_ALM_SMPL1 0x24 +/* Alarm 2, sample period */ +#define ADIS16209_ALM_SMPL2 0x26 +/* Alarm control */ +#define ADIS16209_ALM_CTRL 0x28 +/* Auxiliary DAC data */ +#define ADIS16209_AUX_DAC 0x30 +/* General-purpose digital input/output control */ +#define ADIS16209_GPIO_CTRL 0x32 +/* Miscellaneous control */ +#define ADIS16209_MSC_CTRL 0x34 +/* Internal sample period (rate) control */ +#define ADIS16209_SMPL_PRD 0x36 +/* Operation, filter configuration */ +#define ADIS16209_AVG_CNT 0x38 +/* Operation, sleep mode control */ +#define ADIS16209_SLP_CNT 0x3A +/* Diagnostics, system status register */ +#define ADIS16209_DIAG_STAT 0x3C +/* Operation, system command register */ +#define ADIS16209_GLOB_CMD 0x3E + +#define ADIS16209_OUTPUTS 8 + +/* MSC_CTRL */ +/* Self-test at power-on: 1 = disabled, 0 = enabled */ +#define ADIS16209_MSC_CTRL_PWRUP_SELF_TEST (1 << 10) +/* Self-test enable */ +#define ADIS16209_MSC_CTRL_SELF_TEST_EN (1 << 8) +/* Data-ready enable: 1 = enabled, 0 = disabled */ +#define ADIS16209_MSC_CTRL_DATA_RDY_EN (1 << 2) +/* Data-ready polarity: 1 = active high, 0 = active low */ +#define ADIS16209_MSC_CTRL_ACTIVE_HIGH (1 << 1) +/* Data-ready line selection: 1 = DIO2, 0 = DIO1 */ +#define ADIS16209_MSC_CTRL_DATA_RDY_DIO2 (1 << 0) + +/* DIAG_STAT */ +/* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */ +#define ADIS16209_DIAG_STAT_ALARM2 (1<<9) +/* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */ +#define ADIS16209_DIAG_STAT_ALARM1 (1<<8) +/* Self-test diagnostic error flag: 1 = error condition, 0 = normal operation */ +#define ADIS16209_DIAG_STAT_SELFTEST_FAIL (1<<5) +/* SPI communications failure */ +#define ADIS16209_DIAG_STAT_SPI_FAIL (1<<3) +/* Flash update failure */ +#define ADIS16209_DIAG_STAT_FLASH_UPT (1<<2) +/* Power supply above 3.625 V */ +#define ADIS16209_DIAG_STAT_POWER_HIGH (1<<1) +/* Power supply below 3.15 V */ +#define ADIS16209_DIAG_STAT_POWER_LOW (1<<0) + +/* GLOB_CMD */ +#define ADIS16209_GLOB_CMD_SW_RESET (1<<7) +#define ADIS16209_GLOB_CMD_CLEAR_STAT (1<<4) +#define ADIS16209_GLOB_CMD_FACTORY_CAL (1<<1) + +#define ADIS16209_MAX_TX 24 +#define ADIS16209_MAX_RX 24 + +#define ADIS16209_ERROR_ACTIVE (1<<14) + +/** + * struct adis16209_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 adis16209_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 adis16209_set_irq(struct device *dev, bool enable); + +#ifdef CONFIG_IIO_RING_BUFFER +enum adis16209_scan { + ADIS16209_SCAN_SUPPLY, + ADIS16209_SCAN_ACC_X, + ADIS16209_SCAN_ACC_Y, + ADIS16209_SCAN_AUX_ADC, + ADIS16209_SCAN_TEMP, + ADIS16209_SCAN_INCLI_X, + ADIS16209_SCAN_INCLI_Y, + ADIS16209_SCAN_ROT, +}; + +void adis16209_remove_trigger(struct iio_dev *indio_dev); +int adis16209_probe_trigger(struct iio_dev *indio_dev); + +ssize_t adis16209_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf); + +int adis16209_configure_ring(struct iio_dev *indio_dev); +void adis16209_unconfigure_ring(struct iio_dev *indio_dev); + +int adis16209_initialize_ring(struct iio_ring_buffer *ring); +void adis16209_uninitialize_ring(struct iio_ring_buffer *ring); +#else /* CONFIG_IIO_RING_BUFFER */ + +static inline void adis16209_remove_trigger(struct iio_dev *indio_dev) +{ +} + +static inline int adis16209_probe_trigger(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline ssize_t +adis16209_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return 0; +} + +static int adis16209_configure_ring(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline void adis16209_unconfigure_ring(struct iio_dev *indio_dev) +{ +} + +static inline int adis16209_initialize_ring(struct iio_ring_buffer *ring) +{ + return 0; +} + +static inline void adis16209_uninitialize_ring(struct iio_ring_buffer *ring) +{ +} + +#endif /* CONFIG_IIO_RING_BUFFER */ +#endif /* SPI_ADIS16209_H_ */ |