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Message-ID: <20230829210657.9904-22-quic_wcheng@quicinc.com>
Date: Tue, 29 Aug 2023 14:06:46 -0700
From: Wesley Cheng <quic_wcheng@...cinc.com>
To: <srinivas.kandagatla@...aro.org>, <mathias.nyman@...el.com>,
<perex@...ex.cz>, <lgirdwood@...il.com>, <andersson@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <gregkh@...uxfoundation.org>,
<Thinh.Nguyen@...opsys.com>, <broonie@...nel.org>,
<bgoswami@...cinc.com>, <tiwai@...e.com>, <robh+dt@...nel.org>,
<agross@...nel.org>
CC: <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
<alsa-devel@...a-project.org>, <devicetree@...r.kernel.org>,
<linux-usb@...r.kernel.org>, <quic_jackp@...cinc.com>,
<quic_plai@...cinc.com>, Wesley Cheng <quic_wcheng@...cinc.com>
Subject: [PATCH v5 21/32] sound: soc: qcom: qusb6: Ensure PCM format is supported by USB audio device
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@...cinc.com>
---
sound/soc/qcom/qdsp6/q6usb.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/sound/soc/qcom/qdsp6/q6usb.c b/sound/soc/qcom/qdsp6/q6usb.c
index 88aa0a64201a..e7b9c34fd5bd 100644
--- a/sound/soc/qcom/qdsp6/q6usb.c
+++ b/sound/soc/qcom/qdsp6/q6usb.c
@@ -44,7 +44,10 @@ 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,
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