[PATCH v3 4/5] ASoC: fsl: fsl_rpmsg: Register CPU DAI with name of rpmsg channel

[Chancel Liu <chancel.liu@xxxxxxx>]

Each rpmsg sound card sits on one rpmsg channel. Register CPU DAI with
name of rpmsg channel so that ASoC machine driver can easily link CPU
DAI with rpmsg channel name.

Signed-off-by: Chancel Liu <chancel.liu@xxxxxxx>
---
 sound/soc/fsl/fsl_rpmsg.c | 32 ++++++++++++++++++++++++++------
 1 file changed, 26 insertions(+), 6 deletions(-)

diff --git a/sound/soc/fsl/fsl_rpmsg.c b/sound/soc/fsl/fsl_rpmsg.c
index 53bd517e59d6..bc41a0666856 100644
--- a/sound/soc/fsl/fsl_rpmsg.c
+++ b/sound/soc/fsl/fsl_rpmsg.c
@@ -135,7 +135,6 @@ static struct snd_soc_dai_driver fsl_rpmsg_dai = {
 
 static const struct snd_soc_component_driver fsl_component = {
 	.name			= "fsl-rpmsg",
-	.legacy_dai_naming	= 1,
 };
 
 static const struct fsl_rpmsg_soc_data imx7ulp_data = {
@@ -190,19 +189,40 @@ MODULE_DEVICE_TABLE(of, fsl_rpmsg_ids);
 static int fsl_rpmsg_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
+	struct snd_soc_dai_driver *dai_drv;
+	const char *dai_name;
 	struct fsl_rpmsg *rpmsg;
 	int ret;
 
+	dai_drv = devm_kzalloc(&pdev->dev, sizeof(struct snd_soc_dai_driver), GFP_KERNEL);
+	if (!dai_drv)
+		return -ENOMEM;
+	memcpy(dai_drv, &fsl_rpmsg_dai, sizeof(fsl_rpmsg_dai));
+
 	rpmsg = devm_kzalloc(&pdev->dev, sizeof(struct fsl_rpmsg), GFP_KERNEL);
 	if (!rpmsg)
 		return -ENOMEM;
 
 	rpmsg->soc_data = of_device_get_match_data(&pdev->dev);
 
-	fsl_rpmsg_dai.playback.rates = rpmsg->soc_data->rates;
-	fsl_rpmsg_dai.capture.rates = rpmsg->soc_data->rates;
-	fsl_rpmsg_dai.playback.formats = rpmsg->soc_data->formats;
-	fsl_rpmsg_dai.capture.formats = rpmsg->soc_data->formats;
+	if (rpmsg->soc_data) {
+		dai_drv->playback.rates = rpmsg->soc_data->rates;
+		dai_drv->capture.rates = rpmsg->soc_data->rates;
+		dai_drv->playback.formats = rpmsg->soc_data->formats;
+		dai_drv->capture.formats = rpmsg->soc_data->formats;
+	}
+
+	/* Use rpmsg channel name as cpu dai name */
+	ret = of_property_read_string(np, "fsl,rpmsg-channel-name", &dai_name);
+	if (ret) {
+		if (ret == -EINVAL) {
+			dai_name = "rpmsg-audio-channel";
+		} else {
+			dev_err(&pdev->dev, "Failed to get rpmsg channel name: %d!\n", ret);
+			return ret;
+		}
+	}
+	dai_drv->name = dai_name;
 
 	if (of_property_read_bool(np, "fsl,enable-lpa")) {
 		rpmsg->enable_lpa = 1;
@@ -236,7 +256,7 @@ static int fsl_rpmsg_probe(struct platform_device *pdev)
 	pm_runtime_enable(&pdev->dev);
 
 	ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component,
-					      &fsl_rpmsg_dai, 1);
+					      dai_drv, 1);
 	if (ret)
 		goto err_pm_disable;
 
-- 
2.43.0