ASoC: add and use asoc_dummy_dlc

Merge series from Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>:

Many ASoC drivers are using dummy DAI.
I have 2 concern about it. 1st one is there is no guarantee that local
strings ("snd-soc-dummy-dai",  "snd-soc-dummy") are kept until the card
was binded if it was added at subfunction.
2nd one is we can use common snd_soc_dai_link_component for it.
This patch-set adds common asoc_dummy_dlc, and use it.

4 files changed, 10 insertions, 26 deletions

diff --git a/sound/soc/fsl/imx-audmix.c b/sound/soc/fsl/imx-audmix.c
index b2c5aca92c6b..efbcd4a65ca8 100644
--- a/sound/soc/fsl/imx-audmix.c
+++ b/sound/soc/fsl/imx-audmix.c
@@ -207,8 +207,8 @@ static int imx_audmix_probe(struct platform_device *pdev)
 	for (i = 0; i < num_dai; i++) {
 		struct snd_soc_dai_link_component *dlc;
 
-		/* for CPU/Codec x 2 */
-		dlc = devm_kcalloc(&pdev->dev, 4, sizeof(*dlc), GFP_KERNEL);
+		/* for CPU x 2 */
+		dlc = devm_kcalloc(&pdev->dev, 2, sizeof(*dlc), GFP_KERNEL);
 		if (!dlc)
 			return -ENOMEM;
 
@@ -244,7 +244,7 @@ static int imx_audmix_probe(struct platform_device *pdev)
 		 */
 		priv->dai[i].cpus	=
 		priv->dai[i].platforms	= &dlc[0];
-		priv->dai[i].codecs	= &dlc[1];
+		priv->dai[i].codecs	= &asoc_dummy_dlc;
 
 		priv->dai[i].num_cpus = 1;
 		priv->dai[i].num_codecs = 1;
@@ -252,8 +252,6 @@ static int imx_audmix_probe(struct platform_device *pdev)
 
 		priv->dai[i].name = dai_name;
 		priv->dai[i].stream_name = "HiFi-AUDMIX-FE";
-		priv->dai[i].codecs->dai_name = "snd-soc-dummy-dai";
-		priv->dai[i].codecs->name = "snd-soc-dummy";
 		priv->dai[i].cpus->of_node = args.np;
 		priv->dai[i].cpus->dai_name = dev_name(&cpu_pdev->dev);
 		priv->dai[i].dynamic = 1;
@@ -270,15 +268,13 @@ static int imx_audmix_probe(struct platform_device *pdev)
 		be_cp = devm_kasprintf(&pdev->dev, GFP_KERNEL,
 				       "AUDMIX-Capture-%d", i);
 
-		priv->dai[num_dai + i].cpus	= &dlc[2];
-		priv->dai[num_dai + i].codecs	= &dlc[3];
+		priv->dai[num_dai + i].cpus	= &dlc[1];
+		priv->dai[num_dai + i].codecs	= &asoc_dummy_dlc;
 
 		priv->dai[num_dai + i].num_cpus = 1;
 		priv->dai[num_dai + i].num_codecs = 1;
 
 		priv->dai[num_dai + i].name = be_name;
-		priv->dai[num_dai + i].codecs->dai_name = "snd-soc-dummy-dai";
-		priv->dai[num_dai + i].codecs->name = "snd-soc-dummy";
 		priv->dai[num_dai + i].cpus->of_node = audmix_np;
 		priv->dai[num_dai + i].cpus->dai_name = be_name;
 		priv->dai[num_dai + i].no_pcm = 1;
diff --git a/sound/soc/fsl/imx-card.c b/sound/soc/fsl/imx-card.c
index 64a4d7e9db60..78e2e3932ba5 100644
--- a/sound/soc/fsl/imx-card.c
+++ b/sound/soc/fsl/imx-card.c
@@ -615,17 +615,8 @@ static int imx_card_parse_of(struct imx_card_data *data)
 				plat_data->type = CODEC_AK5552;
 
 		} else {
-			dlc = devm_kzalloc(dev, sizeof(*dlc), GFP_KERNEL);
-			if (!dlc) {
-				ret = -ENOMEM;
-				goto err;
-			}
-
-			link->codecs	 = dlc;
+			link->codecs	 = &asoc_dummy_dlc;
 			link->num_codecs = 1;
-
-			link->codecs->dai_name = "snd-soc-dummy-dai";
-			link->codecs->name = "snd-soc-dummy";
 		}
 
 		if (!strncmp(link->name, "HiFi-ASRC-FE", 12)) {
diff --git a/sound/soc/fsl/imx-rpmsg.c b/sound/soc/fsl/imx-rpmsg.c
index 89178106fe2c..93fc976e98dc 100644
--- a/sound/soc/fsl/imx-rpmsg.c
+++ b/sound/soc/fsl/imx-rpmsg.c
@@ -92,8 +92,7 @@ static int imx_rpmsg_probe(struct platform_device *pdev)
 	/* Optional codec node */
 	ret = of_parse_phandle_with_fixed_args(np, "audio-codec", 0, 0, &args);
 	if (ret) {
-		data->dai.codecs->dai_name = "snd-soc-dummy-dai";
-		data->dai.codecs->name = "snd-soc-dummy";
+		*data->dai.codecs = asoc_dummy_dlc;
 	} else {
 		struct clk *clk;
 
diff --git a/sound/soc/fsl/imx-spdif.c b/sound/soc/fsl/imx-spdif.c
index ab978431ac98..44463f92e522 100644
--- a/sound/soc/fsl/imx-spdif.c
+++ b/sound/soc/fsl/imx-spdif.c
@@ -26,7 +26,7 @@ static int imx_spdif_audio_probe(struct platform_device *pdev)
 	}
 
 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
-	comp = devm_kzalloc(&pdev->dev, 2 * sizeof(*comp), GFP_KERNEL);
+	comp = devm_kzalloc(&pdev->dev, sizeof(*comp), GFP_KERNEL);
 	if (!data || !comp) {
 		ret = -ENOMEM;
 		goto end;
@@ -37,8 +37,8 @@ static int imx_spdif_audio_probe(struct platform_device *pdev)
 	 * platform is using soc-generic-dmaengine-pcm
 	 */
 	data->dai.cpus		=
-	data->dai.platforms	= &comp[0];
-	data->dai.codecs	= &comp[1];
+	data->dai.platforms	= comp;
+	data->dai.codecs	= &asoc_dummy_dlc;
 
 	data->dai.num_cpus	= 1;
 	data->dai.num_codecs	= 1;
@@ -46,8 +46,6 @@ static int imx_spdif_audio_probe(struct platform_device *pdev)
 
 	data->dai.name = "S/PDIF PCM";
 	data->dai.stream_name = "S/PDIF PCM";
-	data->dai.codecs->dai_name = "snd-soc-dummy-dai";
-	data->dai.codecs->name = "snd-soc-dummy";
 	data->dai.cpus->of_node = spdif_np;
 	data->dai.playback_only = true;
 	data->dai.capture_only = true;