[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/soc/samsung/odroid.c b/src/kernel/linux/v4.14/sound/soc/samsung/odroid.c
new file mode 100644
index 0000000..32c9e19
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/soc/samsung/odroid.c
@@ -0,0 +1,238 @@
+/*
+ * Copyright (C) 2017 Samsung Electronics Co., Ltd.
+ *
+ * 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.
+ */
+
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/module.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+#include "i2s.h"
+#include "i2s-regs.h"
+
+struct odroid_priv {
+ struct snd_soc_card card;
+ struct snd_soc_dai_link dai_link;
+
+ struct clk *clk_i2s_bus;
+ struct clk *sclk_i2s;
+};
+
+static int odroid_card_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
+ return 0;
+}
+
+static int odroid_card_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct odroid_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+ unsigned int pll_freq, rclk_freq, rfs;
+ int ret;
+
+ switch (params_rate(params)) {
+ case 64000:
+ pll_freq = 196608001U;
+ rfs = 384;
+ break;
+ case 44100:
+ case 88200:
+ case 176400:
+ pll_freq = 180633609U;
+ rfs = 512;
+ break;
+ case 32000:
+ case 48000:
+ case 96000:
+ case 192000:
+ pll_freq = 196608001U;
+ rfs = 512;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = clk_set_rate(priv->clk_i2s_bus, pll_freq / 2 + 1);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * We add 2 to the rclk_freq value in order to avoid too low clock
+ * frequency values due to the EPLL output frequency not being exact
+ * multiple of the audio sampling rate.
+ */
+ rclk_freq = params_rate(params) * rfs + 2;
+
+ ret = clk_set_rate(priv->sclk_i2s, rclk_freq);
+ if (ret < 0)
+ return ret;
+
+ if (rtd->num_codecs > 1) {
+ struct snd_soc_dai *codec_dai = rtd->codec_dais[1];
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk_freq,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_ops odroid_card_ops = {
+ .startup = odroid_card_startup,
+ .hw_params = odroid_card_hw_params,
+};
+
+static void odroid_put_codec_of_nodes(struct snd_soc_dai_link *link)
+{
+ struct snd_soc_dai_link_component *component = link->codecs;
+ int i;
+
+ for (i = 0; i < link->num_codecs; i++, component++) {
+ if (!component->of_node)
+ break;
+ of_node_put(component->of_node);
+ }
+}
+
+static int odroid_audio_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *cpu, *codec;
+ struct odroid_priv *priv;
+ struct snd_soc_dai_link *link;
+ struct snd_soc_card *card;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ card = &priv->card;
+ card->dev = dev;
+
+ card->owner = THIS_MODULE;
+ card->fully_routed = true;
+
+ snd_soc_card_set_drvdata(card, priv);
+
+ ret = snd_soc_of_parse_card_name(card, "model");
+ if (ret < 0)
+ return ret;
+
+ if (of_property_read_bool(dev->of_node, "samsung,audio-widgets")) {
+ ret = snd_soc_of_parse_audio_simple_widgets(card,
+ "samsung,audio-widgets");
+ if (ret < 0)
+ return ret;
+ }
+
+ if (of_property_read_bool(dev->of_node, "samsung,audio-routing")) {
+ ret = snd_soc_of_parse_audio_routing(card,
+ "samsung,audio-routing");
+ if (ret < 0)
+ return ret;
+ }
+
+ link = &priv->dai_link;
+
+ link->ops = &odroid_card_ops;
+ link->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS;
+
+ card->dai_link = &priv->dai_link;
+ card->num_links = 1;
+
+ cpu = of_get_child_by_name(dev->of_node, "cpu");
+ codec = of_get_child_by_name(dev->of_node, "codec");
+
+ link->cpu_of_node = of_parse_phandle(cpu, "sound-dai", 0);
+ if (!link->cpu_of_node) {
+ dev_err(dev, "Failed parsing cpu/sound-dai property\n");
+ return -EINVAL;
+ }
+
+ ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
+ if (ret < 0)
+ goto err_put_codec_n;
+
+ link->platform_of_node = link->cpu_of_node;
+
+ link->name = "Primary";
+ link->stream_name = link->name;
+
+
+ priv->sclk_i2s = of_clk_get_by_name(link->cpu_of_node, "i2s_opclk1");
+ if (IS_ERR(priv->sclk_i2s)) {
+ ret = PTR_ERR(priv->sclk_i2s);
+ goto err_put_i2s_n;
+ }
+
+ priv->clk_i2s_bus = of_clk_get_by_name(link->cpu_of_node, "iis");
+ if (IS_ERR(priv->clk_i2s_bus)) {
+ ret = PTR_ERR(priv->clk_i2s_bus);
+ goto err_put_sclk;
+ }
+
+ ret = devm_snd_soc_register_card(dev, card);
+ if (ret < 0) {
+ dev_err(dev, "snd_soc_register_card() failed: %d\n", ret);
+ goto err_put_clk_i2s;
+ }
+
+ return 0;
+
+err_put_clk_i2s:
+ clk_put(priv->clk_i2s_bus);
+err_put_sclk:
+ clk_put(priv->sclk_i2s);
+err_put_i2s_n:
+ of_node_put(link->cpu_of_node);
+err_put_codec_n:
+ odroid_put_codec_of_nodes(link);
+ return ret;
+}
+
+static int odroid_audio_remove(struct platform_device *pdev)
+{
+ struct odroid_priv *priv = platform_get_drvdata(pdev);
+
+ of_node_put(priv->dai_link.cpu_of_node);
+ odroid_put_codec_of_nodes(&priv->dai_link);
+ clk_put(priv->sclk_i2s);
+ clk_put(priv->clk_i2s_bus);
+
+ return 0;
+}
+
+static const struct of_device_id odroid_audio_of_match[] = {
+ { .compatible = "samsung,odroid-xu3-audio" },
+ { .compatible = "samsung,odroid-xu4-audio"},
+ { },
+};
+MODULE_DEVICE_TABLE(of, odroid_audio_of_match);
+
+static struct platform_driver odroid_audio_driver = {
+ .driver = {
+ .name = "odroid-audio",
+ .of_match_table = odroid_audio_of_match,
+ .pm = &snd_soc_pm_ops,
+ },
+ .probe = odroid_audio_probe,
+ .remove = odroid_audio_remove,
+};
+module_platform_driver(odroid_audio_driver);
+
+MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
+MODULE_DESCRIPTION("Odroid XU3/XU4 audio support");
+MODULE_LICENSE("GPL v2");