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author | Barry Song <barry.song@analog.com> | 2010-10-28 01:43:50 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-09 23:46:33 (GMT) |
commit | f11ba4f5774957415aa15eea7c8c8717126907ee (patch) | |
tree | e78f82298f7ad6a632015e2834db5d22d45e1907 /drivers/staging/iio/accel/adis16203.h | |
parent | f7fe1d1dd5a512a44f0ada40ff7f120664e2e082 (diff) | |
download | linux-f11ba4f5774957415aa15eea7c8c8717126907ee.tar.xz |
staging: iio: new adis16203 driver
IIO driver for Programmable 360 Degrees Inclinometer adis16203 parts.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/iio/accel/adis16203.h')
-rw-r--r-- | drivers/staging/iio/accel/adis16203.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/drivers/staging/iio/accel/adis16203.h b/drivers/staging/iio/accel/adis16203.h new file mode 100644 index 0000000..b39323e --- /dev/null +++ b/drivers/staging/iio/accel/adis16203.h @@ -0,0 +1,143 @@ +#ifndef SPI_ADIS16203_H_ +#define SPI_ADIS16203_H_ + +#define ADIS16203_STARTUP_DELAY 220 /* ms */ + +#define ADIS16203_READ_REG(a) a +#define ADIS16203_WRITE_REG(a) ((a) | 0x80) + +#define ADIS16203_FLASH_CNT 0x00 /* Flash memory write count */ +#define ADIS16203_SUPPLY_OUT 0x02 /* Output, power supply */ +#define ADIS16203_AUX_ADC 0x08 /* Output, auxiliary ADC input */ +#define ADIS16203_TEMP_OUT 0x0A /* Output, temperature */ +#define ADIS16203_XINCL_OUT 0x0C /* Output, x-axis inclination */ +#define ADIS16203_YINCL_OUT 0x0E /* Output, y-axis inclination */ +#define ADIS16203_INCL_NULL 0x18 /* Incline null calibration */ +#define ADIS16203_ALM_MAG1 0x20 /* Alarm 1 amplitude threshold */ +#define ADIS16203_ALM_MAG2 0x22 /* Alarm 2 amplitude threshold */ +#define ADIS16203_ALM_SMPL1 0x24 /* Alarm 1, sample period */ +#define ADIS16203_ALM_SMPL2 0x26 /* Alarm 2, sample period */ +#define ADIS16203_ALM_CTRL 0x28 /* Alarm control */ +#define ADIS16203_AUX_DAC 0x30 /* Auxiliary DAC data */ +#define ADIS16203_GPIO_CTRL 0x32 /* General-purpose digital input/output control */ +#define ADIS16203_MSC_CTRL 0x34 /* Miscellaneous control */ +#define ADIS16203_SMPL_PRD 0x36 /* Internal sample period (rate) control */ +#define ADIS16203_AVG_CNT 0x38 /* Operation, filter configuration */ +#define ADIS16203_SLP_CNT 0x3A /* Operation, sleep mode control */ +#define ADIS16203_DIAG_STAT 0x3C /* Diagnostics, system status register */ +#define ADIS16203_GLOB_CMD 0x3E /* Operation, system command register */ + +#define ADIS16203_OUTPUTS 5 + +/* MSC_CTRL */ +#define ADIS16203_MSC_CTRL_PWRUP_SELF_TEST (1 << 10) /* Self-test at power-on: 1 = disabled, 0 = enabled */ +#define ADIS16203_MSC_CTRL_REVERSE_ROT_EN (1 << 9) /* Reverses rotation of both inclination outputs */ +#define ADIS16203_MSC_CTRL_SELF_TEST_EN (1 << 8) /* Self-test enable */ +#define ADIS16203_MSC_CTRL_DATA_RDY_EN (1 << 2) /* Data-ready enable: 1 = enabled, 0 = disabled */ +#define ADIS16203_MSC_CTRL_ACTIVE_HIGH (1 << 1) /* Data-ready polarity: 1 = active high, 0 = active low */ +#define ADIS16203_MSC_CTRL_DATA_RDY_DIO1 (1 << 0) /* Data-ready line selection: 1 = DIO1, 0 = DIO0 */ + +/* DIAG_STAT */ +#define ADIS16203_DIAG_STAT_ALARM2 (1<<9) /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */ +#define ADIS16203_DIAG_STAT_ALARM1 (1<<8) /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */ +#define ADIS16203_DIAG_STAT_SELFTEST_FAIL (1<<5) /* Self-test diagnostic error flag */ +#define ADIS16203_DIAG_STAT_SPI_FAIL (1<<3) /* SPI communications failure */ +#define ADIS16203_DIAG_STAT_FLASH_UPT (1<<2) /* Flash update failure */ +#define ADIS16203_DIAG_STAT_POWER_HIGH (1<<1) /* Power supply above 3.625 V */ +#define ADIS16203_DIAG_STAT_POWER_LOW (1<<0) /* Power supply below 3.15 V */ + +/* GLOB_CMD */ +#define ADIS16203_GLOB_CMD_SW_RESET (1<<7) +#define ADIS16203_GLOB_CMD_CLEAR_STAT (1<<4) +#define ADIS16203_GLOB_CMD_FACTORY_CAL (1<<1) + +#define ADIS16203_MAX_TX 12 +#define ADIS16203_MAX_RX 10 + +#define ADIS16203_ERROR_ACTIVE (1<<14) + +/** + * struct adis16203_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 adis16203_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 adis16203_set_irq(struct device *dev, bool enable); + +#ifdef CONFIG_IIO_RING_BUFFER +enum adis16203_scan { + ADIS16203_SCAN_SUPPLY, + ADIS16203_SCAN_AUX_ADC, + ADIS16203_SCAN_TEMP, + ADIS16203_SCAN_INCLI_X, + ADIS16203_SCAN_INCLI_Y, +}; + +void adis16203_remove_trigger(struct iio_dev *indio_dev); +int adis16203_probe_trigger(struct iio_dev *indio_dev); + +ssize_t adis16203_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf); + +int adis16203_configure_ring(struct iio_dev *indio_dev); +void adis16203_unconfigure_ring(struct iio_dev *indio_dev); + +int adis16203_initialize_ring(struct iio_ring_buffer *ring); +void adis16203_uninitialize_ring(struct iio_ring_buffer *ring); +#else /* CONFIG_IIO_RING_BUFFER */ + +static inline void adis16203_remove_trigger(struct iio_dev *indio_dev) +{ +} + +static inline int adis16203_probe_trigger(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline ssize_t +adis16203_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return 0; +} + +static int adis16203_configure_ring(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline void adis16203_unconfigure_ring(struct iio_dev *indio_dev) +{ +} + +static inline int adis16203_initialize_ring(struct iio_ring_buffer *ring) +{ + return 0; +} + +static inline void adis16203_uninitialize_ring(struct iio_ring_buffer *ring) +{ +} + +#endif /* CONFIG_IIO_RING_BUFFER */ +#endif /* SPI_ADIS16203_H_ */ |