[alsa-devel] [PATCH V2 1/2] ASoC: samsung: Add machine driver for Odroid X2/U3
Sylwester Nawrocki
s.nawrocki at samsung.com
Wed Jun 18 18:22:30 CEST 2014
This patch adds the sound subsystem driver for Odroid-X2 and
Odroid-U3 boards. The codec works in I2S master mode; there are
2 separate audio routing paths defined as there are differences
in the signal routing between the X2 and U3 boards, i.e. U3 uses
single jack for headphones and microphone.
Signed-off-by: Chen Zhen <zhen1.chen at samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki at samsung.com>
---
sound/soc/samsung/Kconfig | 8 ++
sound/soc/samsung/Makefile | 2 +
sound/soc/samsung/odroidx2_max98090.c | 191 +++++++++++++++++++++++++++++++++
3 files changed, 201 insertions(+)
create mode 100644 sound/soc/samsung/odroidx2_max98090.c
diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig
index 7745629..bd2645c 100644
--- a/sound/soc/samsung/Kconfig
+++ b/sound/soc/samsung/Kconfig
@@ -243,3 +243,11 @@ config SND_SOC_SNOW
help
Say Y if you want to add audio support for various Snow
boards based on Exynos5 series of SoCs.
+
+config SND_SOC_ODROIDX2
+ tristate "Audio support for Odroid-X2 and Odroid-U3"
+ depends on SND_SOC_SAMSUNG
+ select SND_SOC_MAX98090
+ select SND_SAMSUNG_I2S
+ help
+ Say Y here to enable audio support for the Odroid-X2/U3.
diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile
index 6d0212b..8b1cfbd 100644
--- a/sound/soc/samsung/Makefile
+++ b/sound/soc/samsung/Makefile
@@ -46,6 +46,7 @@ snd-soc-tobermory-objs := tobermory.o
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
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-$(CONFIG_SND_SOC_TOBERMORY) += snd-soc-tobermory.o
obj-$(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
diff --git a/sound/soc/samsung/odroidx2_max98090.c b/sound/soc/samsung/odroidx2_max98090.c
new file mode 100644
index 0000000..11c0952
--- /dev/null
+++ b/sound/soc/samsung/odroidx2_max98090.c
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2014 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 as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/of.h>
+#include <linux/module.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+#include "i2s.h"
+
+struct odroidx2_drv_data {
+ const struct snd_soc_dapm_widget *dapm_widgets;
+ unsigned int num_dapm_widgets;
+};
+
+/* The I2S CDCLK output clock frequency to the MAX98090 codec. */
+#define MAX98090_MCLK 19200000
+
+static int odroidx2_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 ret;
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, 0, MAX98090_MCLK,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ dev_err(codec_dai->dev,
+ "Unable to switch to FLL1: %d\n", ret);
+ return ret;
+ }
+
+ /* Set the cpu DAI configuration in order to use CDCLK */
+ ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
+ 0, SND_SOC_CLOCK_OUT);
+ if (ret < 0)
+ return ret;
+
+ dev_dbg(codec_dai->dev, "HiFi DAI %s params: channels: %d, rate: %d\n",
+ snd_pcm_stream_str(substream), params_channels(params),
+ params_rate(params));
+
+ return 0;
+}
+
+static struct snd_soc_ops odroidx2_ops = {
+ .hw_params = odroidx2_hw_params,
+};
+
+static const struct snd_soc_dapm_widget odroidx2_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_MIC("Mic Jack", NULL),
+ SND_SOC_DAPM_MIC("DMIC", NULL),
+};
+
+static const struct snd_soc_dapm_widget odroidu3_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_SPK("Speakers", NULL),
+};
+
+static struct snd_soc_dai_link odroidx2_dai[] = {
+ {
+ .name = "MAX98090",
+ .stream_name = "MAX98090 PCM",
+ .codec_dai_name = "HiFi",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &odroidx2_ops,
+ }
+};
+
+static struct snd_soc_card odroidx2 = {
+ .owner = THIS_MODULE,
+ .dai_link = odroidx2_dai,
+ .num_links = ARRAY_SIZE(odroidx2_dai),
+ .fully_routed = true,
+};
+
+struct odroidx2_drv_data odroidx2_drvdata = {
+ .dapm_widgets = odroidx2_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(odroidx2_dapm_widgets),
+};
+
+struct odroidx2_drv_data odroidu3_drvdata = {
+ .dapm_widgets = odroidu3_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(odroidu3_dapm_widgets),
+};
+
+static const struct of_device_id odroidx2_audio_of_match[] = {
+ {
+ .compatible = "samsung,odroidx2-audio",
+ .data = &odroidx2_drvdata,
+ }, {
+ .compatible = "samsung,odroidu3-audio",
+ .data = &odroidu3_drvdata,
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, odroidx2_audio_of_match);
+
+static int odroidx2_audio_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct snd_soc_card *card = &odroidx2;
+ struct odroidx2_drv_data *dd;
+ const struct of_device_id *of_id;
+ int ret;
+
+ card->dev = &pdev->dev;
+
+ of_id = of_match_node(odroidx2_audio_of_match, np);
+ dd = (struct odroidx2_drv_data *)of_id->data;
+
+ card->dapm_widgets = dd->dapm_widgets;
+ card->num_dapm_widgets = dd->num_dapm_widgets;
+
+ ret = snd_soc_of_parse_card_name(card, "samsung,model");
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
+ if (ret < 0)
+ return ret;
+
+ odroidx2_dai[0].codec_of_node = of_parse_phandle(np,
+ "samsung,audio-codec", 0);
+ if (!odroidx2_dai[0].codec_of_node) {
+ dev_err(&pdev->dev,
+ "Property 'samsung,audio-codec' missing or invalid\n");
+ return -EINVAL;
+ }
+
+ odroidx2_dai[0].cpu_of_node = of_parse_phandle(np,
+ "samsung,i2s-controller", 0);
+ if (!odroidx2_dai[0].cpu_of_node) {
+ dev_err(&pdev->dev,
+ "Property 'samsung,i2s-controller' missing or invalid\n");
+ ret = -EINVAL;
+ goto err_put_cod_n;
+ }
+
+ odroidx2_dai[0].platform_of_node = odroidx2_dai[0].cpu_of_node;
+
+ ret = snd_soc_register_card(card);
+ if (ret) {
+ dev_err(&pdev->dev, "snd_soc_register_card failed: %d\n", ret);
+ goto err_put_cpu_n;
+ }
+
+ return 0;
+
+err_put_cpu_n:
+ of_node_put(odroidx2_dai[0].cpu_of_node);
+err_put_cod_n:
+ of_node_put(odroidx2_dai[0].codec_of_node);
+ return ret;
+}
+
+static int odroidx2_audio_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+ snd_soc_unregister_card(card);
+
+ of_node_put(odroidx2_dai[0].cpu_of_node);
+ of_node_put(odroidx2_dai[0].codec_of_node);
+
+ return 0;
+}
+
+static struct platform_driver odroidx2_audio_driver = {
+ .driver = {
+ .name = "odroidx2-audio",
+ .owner = THIS_MODULE,
+ .of_match_table = odroidx2_audio_of_match,
+ },
+ .probe = odroidx2_audio_probe,
+ .remove = odroidx2_audio_remove,
+};
+module_platform_driver(odroidx2_audio_driver);
+
+MODULE_AUTHOR("Chen Zhen <zhen1.chen at samsung.com>");
+MODULE_DESCRIPTION("ALSA SoC Odroid X2/U3 Audio Support");
+MODULE_LICENSE("GPL v2");
--
1.7.9.5
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