[alsa-devel] [PATCH 2/3] ASoC: fsl: pcm030-audio-fabric use snd_soc_register_card

[Eric Millbrandt]

Convert pcm030-audio-fabric to use the new snd_soc_register_card api
instead of the older method of registering a separate platform device.
Create the dai_link to the mpc5200_psc_ac97 platform using the device tree.
Convert the pcm030-audio-fabric driver to a platform-driver and add a
remove function.

Signed-off-by: Eric Millbrandt <emillbrandt at dekaresearch.com>
---
 sound/soc/fsl/pcm030-audio-fabric.c |   65 +++++++++++++++++++++++++----------
 1 files changed, 47 insertions(+), 18 deletions(-)

diff --git a/sound/soc/fsl/pcm030-audio-fabric.c b/sound/soc/fsl/pcm030-audio-fabric.c
index 1353e8f..893e240 100644
--- a/sound/soc/fsl/pcm030-audio-fabric.c
+++ b/sound/soc/fsl/pcm030-audio-fabric.c
@@ -28,7 +28,6 @@ static struct snd_soc_dai_link pcm030_fabric_dai[] = {
 	.stream_name = "AC97 Analog",
 	.codec_dai_name = "wm9712-hifi",
 	.cpu_dai_name = "mpc5200-psc-ac97.0",
-	.platform_name = "mpc5200-pcm-audio",
 	.codec_name = "wm9712-codec",
 },
 {
@@ -36,44 +35,74 @@ static struct snd_soc_dai_link pcm030_fabric_dai[] = {
 	.stream_name = "AC97 IEC958",
 	.codec_dai_name = "wm9712-aux",
 	.cpu_dai_name = "mpc5200-psc-ac97.1",
-	.platform_name = "mpc5200-pcm-audio",
 	.codec_name = "wm9712-codec",
 },
 };
 
-static struct snd_soc_card card = {
+static struct snd_soc_card pcm030_card = {
 	.name = "pcm030",
 	.owner = THIS_MODULE,
 	.dai_link = pcm030_fabric_dai,
 	.num_links = ARRAY_SIZE(pcm030_fabric_dai),
 };
 
-static __init int pcm030_fabric_init(void)
+static int __init pcm030_fabric_probe(struct platform_device *op)
 {
-	struct platform_device *pdev;
-	int rc;
+	struct device_node *np = op->dev.of_node;
+	struct device_node *platform_np;
+	struct snd_soc_card *card = &pcm030_card;
+	int ret;
+	int i;
 
 	if (!of_machine_is_compatible("phytec,pcm030"))
 		return -ENODEV;
 
-	pdev = platform_device_alloc("soc-audio", 1);
-	if (!pdev) {
-		pr_err("pcm030_fabric_init: platform_device_alloc() failed\n");
+	card->dev = &op->dev;
+	platform_set_drvdata(op, card);
+
+	platform_np = of_parse_phandle(np, "asoc-platform", 0);
+	if (!platform_np) {
+		dev_err(&op->dev, "ac97 not registered\n");
 		return -ENODEV;
 	}
 
-	platform_set_drvdata(pdev, &card);
+	for (i = 0; i < card->num_links; i++)
+		card->dai_link[i].platform_of_node = platform_np;
 
-	rc = platform_device_add(pdev);
-	if (rc) {
-		pr_err("pcm030_fabric_init: platform_device_add() failed\n");
-		platform_device_put(pdev);
-		return -ENODEV;
-	}
-	return 0;
+	ret = snd_soc_register_card(card);
+	if (ret)
+		dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret);
+
+	return ret;
 }
 
-module_init(pcm030_fabric_init);
+static int __devexit pcm030_fabric_remove(struct platform_device *op)
+{
+	struct snd_soc_card *card = platform_get_drvdata(op);
+	int ret;
+
+	ret = snd_soc_unregister_card(card);
+
+	return ret;
+}
+
+static struct of_device_id pcm030_audio_match[] = {
+	{ .compatible = "phytec,pcm030-audio-fabric", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, pcm030_audio_match);
+
+static struct platform_driver pcm030_fabric_driver = {
+	.probe		= pcm030_fabric_probe,
+	.remove		= __devexit_p(pcm030_fabric_remove),
+	.driver		= {
+		.name	= DRV_NAME,
+		.owner	= THIS_MODULE,
+		.of_match_table    = pcm030_audio_match,
+	},
+};
+
+module_platform_driver(pcm030_fabric_driver);
 
 
 MODULE_AUTHOR("Jon Smirl <jonsmirl at gmail.com>");
-- 
1.7.2.5