ASoC: mediatek: Remove redundant code and add

Merge series from Maso Huang <maso.huang@mediatek.com>:

Add support for sample rate checking on the MT7986.

sound/soc/mediatek/mt7986/mt7986-dai-etdm.c

@@ -237,12 +237,27 @@ static int mtk_dai_etdm_hw_params(struct snd_pcm_substream *substream,
 				  struct snd_pcm_hw_params *params,
 				  struct snd_soc_dai *dai)
 {
+	unsigned int rate = params_rate(params);
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 
-	mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_PLAYBACK);
-	mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_CAPTURE);
-
-	return 0;
+	switch (rate) {
+	case 8000:
+	case 12000:
+	case 16000:
+	case 24000:
+	case 32000:
+	case 48000:
+	case 96000:
+	case 192000:
+		mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_PLAYBACK);
+		mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_CAPTURE);
+		return 0;
+	default:
+		dev_err(afe->dev,
+			"Sample rate %d invalid. Supported rates: 8/12/16/24/32/48/96/192 kHz\n",
+			rate);
+		return -EINVAL;
+	}
 }
 
 static int mtk_dai_etdm_trigger(struct snd_pcm_substream *substream, int cmd,

sound/soc/mediatek/mt7986/mt7986-wm8960.c

@@ -12,11 +12,6 @@
 
 #include "mt7986-afe-common.h"
 
-struct mt7986_wm8960_priv {
-	struct device_node *platform_node;
-	struct device_node *codec_node;
-};
-
 static const struct snd_soc_dapm_widget mt7986_wm8960_widgets[] = {
 	SND_SOC_DAPM_HP("Headphone", NULL),
 	SND_SOC_DAPM_MIC("AMIC", NULL),
@@ -92,20 +87,18 @@ static int mt7986_wm8960_machine_probe(struct platform_device *pdev)
 	struct snd_soc_card *card = &mt7986_wm8960_card;
 	struct snd_soc_dai_link *dai_link;
 	struct device_node *platform, *codec;
-	struct mt7986_wm8960_priv *priv;
+	struct device_node *platform_dai_node, *codec_dai_node;
 	int ret, i;
 
-	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return -ENOMEM;
+	card->dev = &pdev->dev;
 
 	platform = of_get_child_by_name(pdev->dev.of_node, "platform");
 
 	if (platform) {
-		priv->platform_node = of_parse_phandle(platform, "sound-dai", 0);
+		platform_dai_node = of_parse_phandle(platform, "sound-dai", 0);
 		of_node_put(platform);
 
-		if (!priv->platform_node) {
+		if (!platform_dai_node) {
 			dev_err(&pdev->dev, "Failed to parse platform/sound-dai property\n");
 			return -EINVAL;
 		}
@@ -117,24 +110,22 @@ static int mt7986_wm8960_machine_probe(struct platform_device *pdev)
 	for_each_card_prelinks(card, i, dai_link) {
 		if (dai_link->platforms->name)
 			continue;
-		dai_link->platforms->of_node = priv->platform_node;
+		dai_link->platforms->of_node = platform_dai_node;
 	}
 
-	card->dev = &pdev->dev;
-
 	codec = of_get_child_by_name(pdev->dev.of_node, "codec");
 
 	if (codec) {
-		priv->codec_node = of_parse_phandle(codec, "sound-dai", 0);
+		codec_dai_node = of_parse_phandle(codec, "sound-dai", 0);
 		of_node_put(codec);
 
-		if (!priv->codec_node) {
-			of_node_put(priv->platform_node);
+		if (!codec_dai_node) {
+			of_node_put(platform_dai_node);
 			dev_err(&pdev->dev, "Failed to parse codec/sound-dai property\n");
 			return -EINVAL;
 		}
 	} else {
-		of_node_put(priv->platform_node);
+		of_node_put(platform_dai_node);
 		dev_err(&pdev->dev, "Property 'codec' missing or invalid\n");
 		return -EINVAL;
 	}
@@ -142,7 +133,7 @@ static int mt7986_wm8960_machine_probe(struct platform_device *pdev)
 	for_each_card_prelinks(card, i, dai_link) {
 		if (dai_link->codecs->name)
 			continue;
-		dai_link->codecs->of_node = priv->codec_node;
+		dai_link->codecs->of_node = codec_dai_node;
 	}
 
 	ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
@@ -158,20 +149,11 @@ static int mt7986_wm8960_machine_probe(struct platform_device *pdev)
 	}
 
 err_of_node_put:
-	of_node_put(priv->codec_node);
-	of_node_put(priv->platform_node);
+	of_node_put(platform_dai_node);
+	of_node_put(codec_dai_node);
 	return ret;
 }
 
-static void mt7986_wm8960_machine_remove(struct platform_device *pdev)
-{
-	struct snd_soc_card *card = platform_get_drvdata(pdev);
-	struct mt7986_wm8960_priv *priv = snd_soc_card_get_drvdata(card);
-
-	of_node_put(priv->codec_node);
-	of_node_put(priv->platform_node);
-}
-
 static const struct of_device_id mt7986_wm8960_machine_dt_match[] = {
 	{.compatible = "mediatek,mt7986-wm8960-sound"},
 	{ /* sentinel */ }
@@ -184,7 +166,6 @@ static struct platform_driver mt7986_wm8960_machine = {
 		.of_match_table = mt7986_wm8960_machine_dt_match,
 	},
 	.probe = mt7986_wm8960_machine_probe,
-	.remove_new = mt7986_wm8960_machine_remove,
 };
 
 module_platform_driver(mt7986_wm8960_machine);