[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/soc/samsung/snow.c b/src/kernel/linux/v4.14/sound/soc/samsung/snow.c
new file mode 100644
index 0000000..d8ac907
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/soc/samsung/snow.c
@@ -0,0 +1,133 @@
+/*
+ * ASoC machine driver for Snow boards
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+#include <sound/soc.h>
+
+#include "i2s.h"
+
+#define FIN_PLL_RATE 24000000
+
+static struct snd_soc_dai_link snow_dai[] = {
+ {
+ .name = "Primary",
+ .stream_name = "Primary",
+ .codec_dai_name = "HiFi",
+ .dai_fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ },
+};
+
+static int snow_late_probe(struct snd_soc_card *card)
+{
+ struct snd_soc_pcm_runtime *rtd;
+ struct snd_soc_dai *codec_dai;
+ struct snd_soc_dai *cpu_dai;
+ int ret;
+
+ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
+ codec_dai = rtd->codec_dai;
+ cpu_dai = rtd->cpu_dai;
+
+ /* Set the MCLK rate for the codec */
+ ret = snd_soc_dai_set_sysclk(codec_dai, 0,
+ FIN_PLL_RATE, SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ /* Select I2S Bus clock to set RCLK and BCLK */
+ ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
+ 0, SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static struct snd_soc_card snow_snd = {
+ .name = "Snow-I2S",
+ .owner = THIS_MODULE,
+ .dai_link = snow_dai,
+ .num_links = ARRAY_SIZE(snow_dai),
+
+ .late_probe = snow_late_probe,
+};
+
+static int snow_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &snow_snd;
+ struct device_node *i2s_node, *codec_node;
+ int i, ret;
+
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "samsung,i2s-controller", 0);
+ if (!i2s_node) {
+ dev_err(&pdev->dev,
+ "Property 'i2s-controller' missing or invalid\n");
+ return -EINVAL;
+ }
+
+ codec_node = of_parse_phandle(pdev->dev.of_node,
+ "samsung,audio-codec", 0);
+ if (!codec_node) {
+ dev_err(&pdev->dev,
+ "Property 'audio-codec' missing or invalid\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(snow_dai); i++) {
+ snow_dai[i].codec_of_node = codec_node;
+ snow_dai[i].cpu_of_node = i2s_node;
+ snow_dai[i].platform_of_node = i2s_node;
+ }
+
+ card->dev = &pdev->dev;
+
+ /* Update card-name if provided through DT, else use default name */
+ snd_soc_of_parse_card_name(card, "samsung,model");
+
+ ret = devm_snd_soc_register_card(&pdev->dev, card);
+ if (ret) {
+ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+static const struct of_device_id snow_of_match[] = {
+ { .compatible = "google,snow-audio-max98090", },
+ { .compatible = "google,snow-audio-max98091", },
+ { .compatible = "google,snow-audio-max98095", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snow_of_match);
+
+static struct platform_driver snow_driver = {
+ .driver = {
+ .name = "snow-audio",
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = snow_of_match,
+ },
+ .probe = snow_probe,
+};
+
+module_platform_driver(snow_driver);
+
+MODULE_DESCRIPTION("ALSA SoC Audio machine driver for Snow");
+MODULE_LICENSE("GPL");