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From: Wesley Cheng <quic_wcheng@quicinc.com>
To: <srinivas.kandagatla@linaro.org>, <mathias.nyman@intel.com>,
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CC: <linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-sound@vger.kernel.org>, <linux-usb@vger.kernel.org>,
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        <alsa-devel@alsa-project.org>, Wesley Cheng <quic_wcheng@quicinc.com>
Subject: [PATCH v18 23/41] ASoC: qcom: qdsp6: Ensure PCM format is supported by USB audio device
Date: Tue, 27 Feb 2024 17:36:01 -0800
Message-ID: <20240228013619.29758-24-quic_wcheng@quicinc.com>
In-Reply-To: <20240228013619.29758-1-quic_wcheng@quicinc.com>
References: <20240228013619.29758-1-quic_wcheng@quicinc.com>
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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 = {