diff options
| author | Angelo Dureghello <adureghello@baylibre.com> | 2025-01-14 18:30:12 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2025-02-03 22:15:38 +0300 |
| commit | 6cc60bc38e8428544f8f4f12ddb6cc05fc83a7da (patch) | |
| tree | 20131c80b451322ebba79185829651aeb569d47a | |
| parent | 32f80e203401da168826a023d667918b936f85a8 (diff) | |
| download | linux-6cc60bc38e8428544f8f4f12ddb6cc05fc83a7da.tar.xz | |
iio: dac: adi-axi-dac: modify stream enable
Change suggested from the AXI HDL team, modify the function
axi_dac_data_stream_enable() to check for interface busy, to avoid
possible issues when starting the stream.
Fixes: e61d7178429a ("iio: dac: adi-axi-dac: extend features")
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250114-wip-bl-ad3552r-axi-v0-iio-testing-carlos-v4-3-979402e33545@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/dac/adi-axi-dac.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c index b143f7ed6847..ac871deb8063 100644 --- a/drivers/iio/dac/adi-axi-dac.c +++ b/drivers/iio/dac/adi-axi-dac.c @@ -585,6 +585,14 @@ static int axi_dac_ddr_disable(struct iio_backend *back) static int axi_dac_data_stream_enable(struct iio_backend *back) { struct axi_dac_state *st = iio_backend_get_priv(back); + int ret, val; + + ret = regmap_read_poll_timeout(st->regmap, + AXI_DAC_UI_STATUS_REG, val, + FIELD_GET(AXI_DAC_UI_STATUS_IF_BUSY, val) == 0, + 10, 100 * KILO); + if (ret) + return ret; return regmap_set_bits(st->regmap, AXI_DAC_CUSTOM_CTRL_REG, AXI_DAC_CUSTOM_CTRL_STREAM_ENABLE); |