diff options
Diffstat (limited to 'drivers/iio/adc/ad7606.h')
| -rw-r--r-- | drivers/iio/adc/ad7606.h | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h index 441e62c521bc..2951bb731354 100644 --- a/drivers/iio/adc/ad7606.h +++ b/drivers/iio/adc/ad7606.h @@ -40,6 +40,11 @@ #define AD7606_RANGE_CH_ADDR(ch) (0x03 + ((ch) >> 1)) #define AD7606_OS_MODE 0x08 +#define AD7606_CALIB_GAIN(ch) (0x09 + (ch)) +#define AD7606_CALIB_GAIN_MASK GENMASK(5, 0) +#define AD7606_CALIB_OFFSET(ch) (0x11 + (ch)) +#define AD7606_CALIB_PHASE(ch) (0x19 + (ch)) + struct ad7606_state; typedef int (*ad7606_scale_setup_cb_t)(struct iio_dev *indio_dev, @@ -61,6 +66,9 @@ typedef int (*ad7606_sw_setup_cb_t)(struct iio_dev *indio_dev); * @init_delay_ms: required delay in milliseconds for initialization * after a restart * @offload_storagebits: storage bits used by the offload hw implementation + * @calib_gain_avail: chip supports gain calibration + * @calib_offset_avail: pointer to offset calibration range/limits array + * @calib_phase_avail: pointer to phase calibration range/limits array */ struct ad7606_chip_info { unsigned int max_samplerate; @@ -74,22 +82,28 @@ struct ad7606_chip_info { bool os_req_reset; unsigned long init_delay_ms; u8 offload_storagebits; + bool calib_gain_avail; + const int *calib_offset_avail; + const int (*calib_phase_avail)[2]; }; /** - * struct ad7606_chan_scale - channel scale configuration + * struct ad7606_chan_info - channel configuration * @scale_avail: pointer to the array which stores the available scales * @num_scales: number of elements stored in the scale_avail array * @range: voltage range selection, selects which scale to apply * @reg_offset: offset for the register value, to be applied when * writing the value of 'range' to the register value + * @r_gain: gain resistor value in ohms, to be set to match the + * external r_filter value */ -struct ad7606_chan_scale { +struct ad7606_chan_info { #define AD760X_MAX_SCALES 16 const unsigned int (*scale_avail)[2]; unsigned int num_scales; unsigned int range; unsigned int reg_offset; + unsigned int r_gain; }; /** @@ -97,7 +111,7 @@ struct ad7606_chan_scale { * @dev: pointer to kernel device * @chip_info: entry in the table of chips that describes this device * @bops: bus operations (SPI or parallel) - * @chan_scales: scale configuration for channels + * @chan_info: scale configuration for channels * @oversampling: oversampling selection * @cnvst_pwm: pointer to the PWM device connected to the cnvst pin * @base_address: address from where to read data in parallel operation @@ -128,7 +142,7 @@ struct ad7606_state { struct device *dev; const struct ad7606_chip_info *chip_info; const struct ad7606_bus_ops *bops; - struct ad7606_chan_scale chan_scales[AD760X_MAX_CHANNELS]; + struct ad7606_chan_info chan_info[AD760X_MAX_CHANNELS]; unsigned int oversampling; struct pwm_device *cnvst_pwm; void __iomem *base_address; |