1 files changed, 130 insertions, 0 deletions
diff --git a/sound/soc/fsl/fsl_sai_wm9712.c b/sound/soc/fsl/fsl_sai_wm9712.c
new file mode 100644
index 000000000000..617c5ab45f64
--- /dev/null
+++ b/sound/soc/fsl/fsl_sai_wm9712.c
@@ -0,0 +1,130 @@
+/*
+ * fsl_sai_wm9712.c  --  SoC audio for Freescale SAI
+ *
+ * Copyright 2014 Stefan Agner, Toradex AG <stefan@agner.ch>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#include <linux/module.h>
+#include <sound/soc.h>
+
+#define DRV_NAME "fsl-sai-ac97-dt-driver"
+
+static struct snd_soc_dai_link fsl_sai_wm9712_dai = {
+	.name = "AC97 HiFi",
+	.stream_name = "AC97 HiFi",
+	.codec_dai_name = "wm9712-hifi",
+	.codec_name = "wm9712-codec",
+};
+
+static const struct snd_soc_dapm_widget tegra_wm9712_dapm_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_LINE("LineIn", NULL),
+	SND_SOC_DAPM_MIC("Mic", NULL),
+};
+
+
+static struct snd_soc_card snd_soc_card_fsl_sai_wm9712 = {
+	.name = "Colibri VF61 AC97 Audio",
+	.owner = THIS_MODULE,
+	.dai_link = &fsl_sai_wm9712_dai,
+	.num_links = 1,
+
+	.dapm_widgets = tegra_wm9712_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(tegra_wm9712_dapm_widgets),
+	.fully_routed = true,
+};
+
+static struct platform_device *codec;
+
+static int fsl_sai_wm9712_driver_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct snd_soc_card *card = &snd_soc_card_fsl_sai_wm9712;
+	int ret;
+
+	card->dev = &pdev->dev;
+	platform_set_drvdata(pdev, card);
+
+	codec = platform_device_alloc("wm9712-codec", -1);
+	if (!codec)
+		return -ENOMEM;
+
+	ret = platform_device_add(codec);
+	if (ret)
+		goto codec_put;
+
+	ret = snd_soc_of_parse_card_name(card, "fsl,model");
+	if (ret)
+		goto codec_unregister;
+
+	ret = snd_soc_of_parse_audio_routing(card, "fsl,audio-routing");
+	if (ret)
+		goto codec_unregister;
+
+	fsl_sai_wm9712_dai.cpu_of_node = of_parse_phandle(np,
+				       "fsl,ac97-controller", 0);
+	if (!fsl_sai_wm9712_dai.cpu_of_node) {
+		dev_err(&pdev->dev,
+			"Property 'fsl,ac97-controller' missing or invalid\n");
+		ret = -EINVAL;
+		goto codec_unregister;
+	}
+
+	fsl_sai_wm9712_dai.platform_of_node = fsl_sai_wm9712_dai.cpu_of_node;
+
+	ret = snd_soc_register_card(card);
+	if (ret) {
+		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
+			ret);
+		goto codec_unregister;
+	}
+
+	return 0;
+
+codec_unregister:
+	platform_device_del(codec);
+
+codec_put:
+	platform_device_put(codec);
+	return ret;
+}
+
+static int fsl_sai_wm9712_driver_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+	snd_soc_unregister_card(card);
+
+	platform_device_unregister(codec);
+
+	return 0;
+}
+
+static const struct of_device_id fsl_sai_wm9712_of_match[] = {
+	{ .compatible = "fsl,fsl-sai-audio-wm9712", },
+	{},
+};
+
+static struct platform_driver fsl_sai_wm9712_driver = {
+	.driver = {
+		.name = DRV_NAME,
+		.owner = THIS_MODULE,
+		.pm = &snd_soc_pm_ops,
+		.of_match_table = fsl_sai_wm9712_of_match,
+	},
+	.probe = fsl_sai_wm9712_driver_probe,
+	.remove = fsl_sai_wm9712_driver_remove,
+};
+module_platform_driver(fsl_sai_wm9712_driver);
+
+/* Module information */
+MODULE_AUTHOR("Stefan Agner <stefan@agner.ch>");
+MODULE_DESCRIPTION("ALSA SoC Freescale SAI+WM9712");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(of, fsl_sai_wm9712_of_match);