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

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Add data source getter.

Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250409-wip-bl-ad3552r-fixes-v5-4-fb429c3a6515@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Angelo Dureghello 2025-04-09 20:36:31 +02:00 committed by Jonathan Cameron
parent 2086321576
commit ca74d0eb06
1 changed files with 30 additions and 0 deletions
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30
drivers/iio/dac/adi-axi-dac.c
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@ -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,