Commit ca74d0eb authored by Angelo Dureghello's avatar Angelo Dureghello Committed by Jonathan Cameron
Browse files

iio: dac: adi-axi-dac: add data source get 



Add data source getter.

Reviewed-by: default avatarNuno Sá <nuno.sa@analog.com>
Signed-off-by: default avatarAngelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250409-wip-bl-ad3552r-fixes-v5-4-fb429c3a6515@baylibre.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 20863215

drivers/iio/dac/adi-axi-dac.c

+30 −0
Original line number Diff line number Diff line
@@ -536,6 +536,35 @@ static int axi_dac_data_source_set(struct iio_backend *back, unsigned int chan, 
	}

}



static int axi_dac_data_source_get(struct iio_backend *back, unsigned int chan,

				   enum iio_backend_data_source *data)

{

	struct axi_dac_state *st = iio_backend_get_priv(back);

	int ret;

	u32 val;



	if (chan > AXI_DAC_CHAN_CNTRL_MAX)

		return -EINVAL;



	ret = regmap_read(st->regmap, AXI_DAC_CHAN_CNTRL_7_REG(chan), &val);

	if (ret)

		return ret;



	switch (val) {

	case AXI_DAC_DATA_INTERNAL_TONE:

		*data = IIO_BACKEND_INTERNAL_CONTINUOUS_WAVE;

		return 0;

	case AXI_DAC_DATA_DMA:

		*data = IIO_BACKEND_EXTERNAL;

		return 0;

	case AXI_DAC_DATA_INTERNAL_RAMP_16BIT:

		*data = IIO_BACKEND_INTERNAL_RAMP_16BIT;

		return 0;

	default:

		return -EIO;

	}

}



static int axi_dac_set_sample_rate(struct iio_backend *back, unsigned int chan,

				   u64 sample_rate)

{
@@ -818,6 +847,7 @@ static const struct iio_backend_ops axi_ad3552r_ops = { 
	.request_buffer = axi_dac_request_buffer,

	.free_buffer = axi_dac_free_buffer,

	.data_source_set = axi_dac_data_source_set,

	.data_source_get = axi_dac_data_source_get,

	.ddr_enable = axi_dac_ddr_enable,

	.ddr_disable = axi_dac_ddr_disable,

	.data_stream_enable = axi_dac_data_stream_enable,