[alsa-devel] [PATCH 1/3] ASoC: samsung: Add machine driver for Trats2
Inha Song
ideal.song at samsung.com
Mon Jan 5 12:25:15 CET 2015
This patch add the sound machine driver for Trats2 board.
The codec operate in master mode. So, Reference to the
codec master clock must be defined in DT.
Signed-off-by: Inha Song <ideal.song at samsung.com>
---
sound/soc/samsung/Kconfig | 8 ++
sound/soc/samsung/Makefile | 2 +
sound/soc/samsung/trats2_wm1811.c | 216 ++++++++++++++++++++++++++++++++++++++
3 files changed, 226 insertions(+)
create mode 100644 sound/soc/samsung/trats2_wm1811.c
diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig
index fc67f97..8031423 100644
--- a/sound/soc/samsung/Kconfig
+++ b/sound/soc/samsung/Kconfig
@@ -245,3 +245,11 @@ config SND_SOC_ARNDALE_RT5631_ALC5631
depends on SND_SOC_SAMSUNG
select SND_SAMSUNG_I2S
select SND_SOC_RT5631
+
+config SND_SOC_SAMSUNG_TRATS2_WM1811
+ tristate "SoC I2S Audio support for WM1811 on Tizen Trats2 board"
+ depends on SND_SOC_SAMSUNG
+ select SND_SOC_WM8994
+ select SND_SAMSUNG_I2S
+ help
+ Say Y if you want to add support for SoC audio on the Tizen Trats2 board.
diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile
index 31e3dba..e2b7b1b 100644
--- a/sound/soc/samsung/Makefile
+++ b/sound/soc/samsung/Makefile
@@ -46,6 +46,7 @@ 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
+snd-soc-trats2-wm1811-objs := trats2_wm1811.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
@@ -73,3 +74,4 @@ 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
+obj-$(CONFIG_SND_SOC_SAMSUNG_TRATS2_WM1811) += snd-soc-trats2-wm1811.o
diff --git a/sound/soc/samsung/trats2_wm1811.c b/sound/soc/samsung/trats2_wm1811.c
new file mode 100644
index 0000000..fc96842
--- /dev/null
+++ b/sound/soc/samsung/trats2_wm1811.c
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2015 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 <linux/clk.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+#include "i2s.h"
+#include "i2s-regs.h"
+#include "../codecs/wm8994.h"
+
+struct trats2_machine_priv {
+ struct clk *clk_mclk;
+};
+
+static struct trats2_machine_priv trats2_wm1811_priv;
+
+static const struct snd_kcontrol_new trats2_controls[] = {
+ SOC_DAPM_PIN_SWITCH("SPK"),
+};
+
+const struct snd_soc_dapm_widget trats2_dapm_widgets[] = {
+ SND_SOC_DAPM_SPK("SPK", NULL),
+};
+
+static int trats2_aif1_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;
+ struct trats2_machine_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+ unsigned int sysclk_rate;
+ unsigned int mclk_rate =
+ (unsigned int)clk_get_rate(priv->clk_mclk);
+ int ret;
+
+ /* Set the codec DAI configuration to Master*/
+ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
+ | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBM_CFM);
+ if (ret < 0) {
+ dev_err(codec_dai->dev,
+ "Failed to set codec dai format: %d\n", ret);
+ return ret;
+ }
+
+ /* Set the cpu DAI configuration to Slave */
+ ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
+ | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBM_CFM);
+ if (ret < 0) {
+ dev_err(cpu_dai->dev,
+ "Failed to set cpu dai format: %d\n", ret);
+ return ret;
+ }
+
+ /* SYSCLK must be greater than 4.096MHz */
+ if (params_rate(params) == 8000 || params_rate(params) == 11025)
+ sysclk_rate = params_rate(params) * 512;
+ else
+ sysclk_rate = params_rate(params) * 256;
+
+ /* Set the codec FLL1 */
+ ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
+ mclk_rate, sysclk_rate);
+ if (ret < 0) {
+ dev_err(codec_dai->dev, "Failed to set FLL1: %d\n", ret);
+ return ret;
+ }
+
+ /* Set the codec SYSCLK */
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
+ sysclk_rate, SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ dev_err(codec_dai->dev, "Failed to set SYSCLK: %d\n", ret);
+ return ret;
+ }
+
+ /* Set i2s OPCLK */
+ ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK,
+ 0, MOD_OPCLK_PCLK);
+ if (ret < 0) {
+ dev_err(cpu_dai->dev,
+ "Failed to set i2s opclk: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct snd_soc_ops trats2_aif1_ops = {
+ .hw_params = trats2_aif1_hw_params,
+};
+
+static int trats2_init_paiftx(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_card *card = rtd->card;
+ struct trats2_machine_priv *priv = snd_soc_card_get_drvdata(card);
+ int ret;
+
+ ret = clk_prepare_enable(priv->clk_mclk);
+ if (ret) {
+ dev_err(codec->dev, "Failed to enable mclk: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct snd_soc_dai_link trats2_dai[] = {
+ {
+ .name = "WM1811 AIF1",
+ .stream_name = "Pri_Dai",
+ .codec_dai_name = "wm8994-aif1",
+ .codec_name = "wm8994-codec",
+ .init = trats2_init_paiftx,
+ .ops = &trats2_aif1_ops,
+ },
+};
+
+static struct snd_soc_card trats2_card = {
+ .owner = THIS_MODULE,
+
+ .dai_link = trats2_dai,
+ .num_links = ARRAY_SIZE(trats2_dai),
+
+ .controls = trats2_controls,
+ .num_controls = ARRAY_SIZE(trats2_controls),
+ .dapm_widgets = trats2_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(trats2_dapm_widgets),
+
+ .drvdata = &trats2_wm1811_priv,
+};
+
+static int trats2_audio_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct snd_soc_card *card = &trats2_card;
+ struct snd_soc_dai_link *dai_link = card->dai_link;
+ struct trats2_machine_priv *priv = card->drvdata;
+ int ret;
+
+ if (!np) {
+ dev_err(&pdev->dev, "of node is missing.\n");
+ return -ENODEV;
+ }
+
+ card->dev = &pdev->dev;
+
+ ret = snd_soc_of_parse_card_name(card, "samsung,model");
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Card name is not provided\n");
+ return ret;
+ }
+
+ ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
+ if (ret) {
+ dev_err(&pdev->dev, "Audio routing is not provided\n");
+ return ret;
+ }
+
+ dai_link->cpu_of_node = of_parse_phandle(np,
+ "samsung,i2s-controller", 0);
+ if (dai_link->cpu_of_node == NULL) {
+ dev_err(&pdev->dev, "i2s-controller property parse error\n");
+ return -EINVAL;
+ }
+
+ dai_link->platform_of_node = dai_link->cpu_of_node;
+
+ priv->clk_mclk = devm_clk_get(&pdev->dev, "mclk");
+ if (IS_ERR(priv->clk_mclk)) {
+ dev_err(&pdev->dev, "Failed to get mclk clock\n");
+ return PTR_ERR(priv->clk_mclk);
+ }
+
+ ret = devm_snd_soc_register_card(&pdev->dev, card);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register card: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id trats2_audio_of_match[] = {
+ { .compatible = "samsung,trats2-audio", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, trats2_audio_of_match);
+
+static struct platform_driver trats2_audio_driver = {
+ .driver = {
+ .name = "trats2-audio",
+ .owner = THIS_MODULE,
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = trats2_audio_of_match,
+ },
+ .probe = trats2_audio_probe,
+};
+
+module_platform_driver(trats2_audio_driver);
+
+MODULE_AUTHOR("Inha Song <ideal.song at samsung.com>");
+MODULE_DESCRIPTION("ALSA SoC Trats2 Audio Support");
+MODULE_LICENSE("GPL v2");
--
2.0.0.390.gcb682f8
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