Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / soc / samsung / arndale_rt5631.c

diff --git a/kernel/sound/soc/samsung/arndale_rt5631.c b/kernel/sound/soc/samsung/arndale_rt5631.c
new file mode 100644 (file)
index 0000000..8bf2e2c
--- /dev/null
+++ b/kernel/sound/soc/samsung/arndale_rt5631.c
@@ -0,0 +1,149 @@
+/*
+ *  arndale_rt5631.c
+ *
+ *  Copyright (c) 2014, Insignal Co., Ltd.
+ *
+ *  Author: Claude <claude@insginal.co.kr>
+ *
+ *  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 <linux/platform_device.h>
+#include <linux/clk.h>
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+#include "i2s.h"
+
+static int arndale_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;
+       struct snd_soc_dai *codec_dai = rtd->codec_dai;
+       int rfs, ret;
+       unsigned long rclk;
+
+       rfs = 256;
+
+       rclk = params_rate(params) * rfs;
+
+       ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
+                                       0, SND_SOC_CLOCK_OUT);
+       if (ret < 0)
+               return ret;
+
+       ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
+                                       0, SND_SOC_CLOCK_OUT);
+
+       if (ret < 0)
+               return ret;
+
+       ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk, SND_SOC_CLOCK_OUT);
+       if (ret < 0)
+               return ret;
+
+       return 0;
+}
+
+static struct snd_soc_ops arndale_ops = {
+       .hw_params = arndale_hw_params,
+};
+
+static struct snd_soc_dai_link arndale_rt5631_dai[] = {
+       {
+               .name = "RT5631 HiFi",
+               .stream_name = "Primary",
+               .codec_dai_name = "rt5631-hifi",
+               .dai_fmt = SND_SOC_DAIFMT_I2S
+                       | SND_SOC_DAIFMT_NB_NF
+                       | SND_SOC_DAIFMT_CBS_CFS,
+               .ops = &arndale_ops,
+       },
+};
+
+static struct snd_soc_card arndale_rt5631 = {
+       .name = "Arndale RT5631",
+       .dai_link = arndale_rt5631_dai,
+       .num_links = ARRAY_SIZE(arndale_rt5631_dai),
+};
+
+static int arndale_audio_probe(struct platform_device *pdev)
+{
+       int n, ret;
+       struct device_node *np = pdev->dev.of_node;
+       struct snd_soc_card *card = &arndale_rt5631;
+
+       card->dev = &pdev->dev;
+
+       for (n = 0; np && n < ARRAY_SIZE(arndale_rt5631_dai); n++) {
+               if (!arndale_rt5631_dai[n].cpu_dai_name) {
+                       arndale_rt5631_dai[n].cpu_of_node = of_parse_phandle(np,
+                                       "samsung,audio-cpu", n);
+
+                       if (!arndale_rt5631_dai[n].cpu_of_node) {
+                               dev_err(&pdev->dev,
+                               "Property 'samsung,audio-cpu' missing or invalid\n");
+                               return -EINVAL;
+                       }
+               }
+               if (!arndale_rt5631_dai[n].platform_name)
+                       arndale_rt5631_dai[n].platform_of_node =
+                                       arndale_rt5631_dai[n].cpu_of_node;
+
+               arndale_rt5631_dai[n].codec_name = NULL;
+               arndale_rt5631_dai[n].codec_of_node = of_parse_phandle(np,
+                                       "samsung,audio-codec", n);
+               if (!arndale_rt5631_dai[0].codec_of_node) {
+                       dev_err(&pdev->dev,
+                       "Property 'samsung,audio-codec' missing or invalid\n");
+                       return -EINVAL;
+               }
+       }
+
+       ret = devm_snd_soc_register_card(card->dev, card);
+
+       if (ret)
+               dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
+
+       return ret;
+}
+
+static int arndale_audio_remove(struct platform_device *pdev)
+{
+       struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+       snd_soc_unregister_card(card);
+
+       return 0;
+}
+
+static const struct of_device_id samsung_arndale_rt5631_of_match[] __maybe_unused = {
+       { .compatible = "samsung,arndale-rt5631", },
+       { .compatible = "samsung,arndale-alc5631", },
+       {},
+};
+MODULE_DEVICE_TABLE(of, samsung_arndale_rt5631_of_match);
+
+static struct platform_driver arndale_audio_driver = {
+       .driver = {
+               .name   = "arndale-audio",
+               .pm = &snd_soc_pm_ops,
+               .of_match_table = of_match_ptr(samsung_arndale_rt5631_of_match),
+       },
+       .probe = arndale_audio_probe,
+       .remove = arndale_audio_remove,
+};
+
+module_platform_driver(arndale_audio_driver);
+
+MODULE_AUTHOR("Claude <claude@insignal.co.kr>");
+MODULE_DESCRIPTION("ALSA SoC Driver for Arndale Board");
+MODULE_LICENSE("GPL");