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[RFC,v2,19/22] sound: soc: qcom: qusb6: Ensure PCM format is supported by USB audio device

Message ID 20230126031424.14582-20-quic_wcheng@quicinc.com (mailing list archive)
State Superseded
Headers show
Series Introduce QC USB SND audio offloading support | expand

Commit Message

Wesley Cheng Jan. 26, 2023, 3:14 a.m. UTC
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 | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/sound/soc/qcom/qdsp6/q6usb.c b/sound/soc/qcom/qdsp6/q6usb.c
index afbff66108bc..0d3693c967ac 100644
--- a/sound/soc/qcom/qdsp6/q6usb.c
+++ b/sound/soc/qcom/qdsp6/q6usb.c
@@ -42,7 +42,10 @@  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_idx, params, direction);
 static const struct snd_soc_dai_ops q6usb_ops = {
 	.hw_params = q6usb_hw_params,