summaryrefslogtreecommitdiff
path: root/sound/soc/samsung
diff options
context:
space:
mode:
authorKrishna Mohan Dani <krishna.md@samsung.com>2014-11-26 14:53:04 +0530
committerMark Brown <broonie@kernel.org>2014-11-26 16:44:44 +0000
commitd683d0b690c13437d752ccce47963ac64119b07a (patch)
tree246fac8088166a842463f56e80778809c06b16aa /sound/soc/samsung
parentb2de1d20a05d8691cb1889c859de2ab56938b82a (diff)
downloadlinux-next-d683d0b690c13437d752ccce47963ac64119b07a.tar.gz
ASoC: Samsung: Add arndale_rt5631 machine driver and binding
Adding machine driver to instantiate I2S based realtek's ALC5631 sound card on Arndale board. There are other variants of Audio Daughter Cards for Arndale Board for which support already exists but there is no support for Realtek's alc5631 codec hence support for ALC5631 based machine driver is being added. This patch also documents the device tree binding for the Arndale board based machine driver. Signed-off-by: Claude Youn <claude.youn@gmail.com> Signed-off-by: Krishna Mohan Dani <krishna.md@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/samsung')
-rw-r--r--sound/soc/samsung/Kconfig6
-rw-r--r--sound/soc/samsung/Makefile2
-rw-r--r--sound/soc/samsung/arndale_rt5631.c150
3 files changed, 158 insertions, 0 deletions
diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig
index e0e737faadd9..fc67f97f19f6 100644
--- a/sound/soc/samsung/Kconfig
+++ b/sound/soc/samsung/Kconfig
@@ -239,3 +239,9 @@ config SND_SOC_ODROIDX2
select SND_SAMSUNG_I2S
help
Say Y here to enable audio support for the Odroid-X2/U3.
+
+config SND_SOC_ARNDALE_RT5631_ALC5631
+ tristate "Audio support for RT5631(ALC5631) on Arndale Board"
+ depends on SND_SOC_SAMSUNG
+ select SND_SAMSUNG_I2S
+ select SND_SOC_RT5631
diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile
index 91505ddaaf95..31e3dba7e3b5 100644
--- a/sound/soc/samsung/Makefile
+++ b/sound/soc/samsung/Makefile
@@ -45,6 +45,7 @@ snd-soc-lowland-objs := lowland.o
snd-soc-littlemill-objs := littlemill.o
snd-soc-bells-objs := bells.o
snd-soc-odroidx2-max98090-objs := odroidx2_max98090.o
+snd-soc-arndale-rt5631-objs := arndale_rt5631.o
obj-$(CONFIG_SND_SOC_SAMSUNG_JIVE_WM8750) += snd-soc-jive-wm8750.o
obj-$(CONFIG_SND_SOC_SAMSUNG_NEO1973_WM8753) += snd-soc-neo1973-wm8753.o
@@ -71,3 +72,4 @@ obj-$(CONFIG_SND_SOC_LOWLAND) += snd-soc-lowland.o
obj-$(CONFIG_SND_SOC_LITTLEMILL) += snd-soc-littlemill.o
obj-$(CONFIG_SND_SOC_BELLS) += snd-soc-bells.o
obj-$(CONFIG_SND_SOC_ODROIDX2) += snd-soc-odroidx2-max98090.o
+obj-$(CONFIG_SND_SOC_ARNDALE_RT5631_ALC5631) += snd-soc-arndale-rt5631.o
diff --git a/sound/soc/samsung/arndale_rt5631.c b/sound/soc/samsung/arndale_rt5631.c
new file mode 100644
index 000000000000..1e2b61ca8db2
--- /dev/null
+++ b/sound/soc/samsung/arndale_rt5631.c
@@ -0,0 +1,150 @@
+/*
+ * 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",
+ .owner = THIS_MODULE,
+ .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");