1 files changed, 130 insertions, 0 deletions
diff --git a/sound/soc/hisilicon/hi6210-hdmi-card.c b/sound/soc/hisilicon/hi6210-hdmi-card.c
new file mode 100644
index 000000000000..93fc121b4158
--- /dev/null
+++ b/sound/soc/hisilicon/hi6210-hdmi-card.c
@@ -0,0 +1,130 @@
+/*
+ * linux/sound/soc/hisilicon/hi6210-hdmi-card.c
+ *
+ * Copyright (C) 2015 Linaro, Ltd
+ *
+ * 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, version 2 of the License.
+ */
+
+#include <linux/module.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+
+static int hdmi_hw_params(struct snd_pcm_substream *substream,
+			  struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+	int ret;
+
+	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
+			SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
+	if (ret)
+		return ret;
+
+	/* set i2s system clock */
+	ret = snd_soc_dai_set_sysclk(cpu_dai, 0, 24576000, SND_SOC_CLOCK_IN);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+/* operations of sound device */
+static struct snd_soc_ops hdmi_ops = {
+	.hw_params = hdmi_hw_params,
+};
+
+static struct snd_soc_dai_link hi6210_hdmi_dai_link = {
+	.name = "hi6210-hdmi-dai-link",  /* "codec name" */
+	.stream_name = "hdmi", /* stream name */
+
+	.cpu_dai_name ="f7118000.hi6210_i2s",
+	.codec_name = "0.hi6210_hdmi_card",
+	.be_id = 0,
+	.ops = &hdmi_ops,
+	.codec_dai_name = "hi6210_hdmi_dai",
+	.platform_name = "f7118000.hi6210_i2s",
+};
+
+static struct snd_soc_card snd_soc_hi6210_hdmi = {
+	.name = "hi6210-hdmi",
+	.owner = THIS_MODULE,
+	.dai_link = &hi6210_hdmi_dai_link,
+	.num_links = 1,
+};
+
+static const struct snd_soc_dai_ops hi6210_hdmi_dai_ops = {
+};
+
+static struct snd_soc_dai_driver hi6210_hdmi_dai = {
+	.name = "hi6210_hdmi_dai",
+	.playback = {
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_48000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	},
+	.ops = &hi6210_hdmi_dai_ops,
+};
+
+static struct snd_soc_codec_driver hi6210_hdmi_codec;
+
+static int hi6210_hdmi_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &snd_soc_hi6210_hdmi;
+	int ret;
+
+	ret = snd_soc_register_codec(&pdev->dev, &hi6210_hdmi_codec,
+			&hi6210_hdmi_dai, 1);
+	if (ret) {
+		dev_err(&pdev->dev, "snd_soc_register_codec failed (%d)\n", ret);
+		return ret;
+	}
+	card->dev = &pdev->dev;
+
+	ret = snd_soc_register_card(card);
+	if (ret) {
+		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+		snd_soc_unregister_codec(&pdev->dev);
+		card->dev = NULL;
+		return ret;
+	}
+	return 0;
+}
+
+static int hi6210_hdmi_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+	snd_soc_unregister_card(card);
+	snd_soc_unregister_codec(&pdev->dev);
+	card->dev = NULL;
+	return 0;
+}
+
+static const struct of_device_id hi6210_hdmi_dt_ids[] = {
+	{ .compatible = "hisilicon,hi6210-hdmi-audio-card" },
+	{ /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(of, hi6210_hdmi_dt_ids);
+
+static struct platform_driver hi6210_hdmi_driver = {
+	.driver = {
+		.name = "hi6210-hdmi-audio",
+		.owner = THIS_MODULE,
+		.of_match_table = hi6210_hdmi_dt_ids,
+	},
+	.probe = hi6210_hdmi_probe,
+	.remove = hi6210_hdmi_remove,
+};
+
+module_platform_driver(hi6210_hdmi_driver);
+
+MODULE_AUTHOR("andy.green@linaro.org");
+MODULE_DESCRIPTION("Hisilicon HDMI machine ASoC driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:hi6210-hdmi-audio");