[PATCH v13 34/53] ASoC: qcom: qdsp6: Ensure PCM format is supported by USB audio device

Wesley Cheng
2024-02-03T02:37:48Z

Check for if the PCM format is supported during the hw_params callback. If
the profile is not supported then the userspace ALSA entity will receive an
error, and can take further action.

Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
---
sound/soc/qcom/qdsp6/q6usb.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sound/soc/qcom/qdsp6/q6usb.c b/sound/soc/qcom/qdsp6/q6usb.c
index 00cba1021dc6..833a57deb321 100644
--- a/sound/soc/qcom/qdsp6/q6usb.c
+++ b/sound/soc/qcom/qdsp6/q6usb.c
@@ -46,7 +46,11 @@ static int q6usb_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
- return 0;
+ struct q6usb_port_data *data = dev_get_drvdata(dai->dev);
+ int direction = substream->stream;
+
+ return snd_soc_usb_find_format(data->active_usb_chip_idx, params,
+ direction);
}

static const struct snd_soc_dai_ops q6usb_ops = {