From: Angelo Dureghello <adureghello@xxxxxxxxxxxx>
Add data source getter.
Signed-off-by: Angelo Dureghello <adureghello@xxxxxxxxxxxx>
---
drivers/iio/dac/adi-axi-dac.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c
index f86acb98b0cffb09bf4d4626f932bf1edc911e2b..8ed5ad1fa24cef649056bc5f4ca80abbf28b9323 100644
--- a/drivers/iio/dac/adi-axi-dac.c
+++ b/drivers/iio/dac/adi-axi-dac.c
@@ -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,
--
2.49.0
