[PATCH v2 2/3] ASoC: mediatek: Add machine driver for MAX98090 codec
From: Koro Chen
Date: Mon Jun 15 2015 - 10:40:32 EST
This is the DPCM based machine driver with MAX98090
Signed-off-by: Koro Chen <koro.chen@xxxxxxxxxxxx>
---
.../devicetree/bindings/sound/mt8173-max98090.txt | 13 ++
sound/soc/mediatek/Kconfig | 10 +
sound/soc/mediatek/Makefile | 2 +
sound/soc/mediatek/mt8173-max98090.c | 213 +++++++++++++++++++++
4 files changed, 238 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/mt8173-max98090.txt
create mode 100644 sound/soc/mediatek/mt8173-max98090.c
diff --git a/Documentation/devicetree/bindings/sound/mt8173-max98090.txt b/Documentation/devicetree/bindings/sound/mt8173-max98090.txt
new file mode 100644
index 0000000..829bd26
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/mt8173-max98090.txt
@@ -0,0 +1,13 @@
+MT8173 with MAX98090 CODEC
+
+Required properties:
+- compatible : "mediatek,mt8173-max98090"
+- mediatek,audio-codec: the phandle of the MAX98090 audio codec
+
+Example:
+
+ sound {
+ compatible = "mediatek,mt8173-max98090";
+ mediatek,audio-codec = <&max98090>;
+ };
+
diff --git a/sound/soc/mediatek/Kconfig b/sound/soc/mediatek/Kconfig
index c622280..0bfd2a0 100644
--- a/sound/soc/mediatek/Kconfig
+++ b/sound/soc/mediatek/Kconfig
@@ -7,3 +7,13 @@ config SND_SOC_MEDIATEK
Select Y if you have such device.
Ex: MT8173
+config SND_SOC_MT8173_MAX98090
+ tristate "ASoC Audio driver for MT8173 with MAX98090 codec"
+ depends on SND_SOC_MEDIATEK
+ select SND_SOC_MAX98090
+ help
+ This adds ASoC driver for Mediatek MT8173 boards
+ with the MAX98090 audio codec.
+ Select Y if you have such device.
+ If unsure select "N".
+
diff --git a/sound/soc/mediatek/Makefile b/sound/soc/mediatek/Makefile
index 5f27cc7..08fa765 100644
--- a/sound/soc/mediatek/Makefile
+++ b/sound/soc/mediatek/Makefile
@@ -1,2 +1,4 @@
# MTK Platform Support
obj-$(CONFIG_SND_SOC_MEDIATEK) += mtk-afe-pcm.o
+# Machine support
+obj-$(CONFIG_SND_SOC_MT8173_MAX98090) += mt8173-max98090.o
diff --git a/sound/soc/mediatek/mt8173-max98090.c b/sound/soc/mediatek/mt8173-max98090.c
new file mode 100644
index 0000000..4d44b58
--- /dev/null
+++ b/sound/soc/mediatek/mt8173-max98090.c
@@ -0,0 +1,213 @@
+/*
+ * mt8173-max98090.c -- MT8173 MAX98090 ALSA SoC machine driver
+ *
+ * Copyright (c) 2015 MediaTek Inc.
+ * Author: Koro Chen <koro.chen@xxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include <linux/gpio.h>
+#include "../codecs/max98090.h"
+
+static struct snd_soc_jack mt8173_max98090_jack;
+
+static struct snd_soc_jack_pin mt8173_max98090_jack_pins[] = {
+ {
+ .pin = "Headphone",
+ .mask = SND_JACK_HEADPHONE,
+ },
+ {
+ .pin = "Headset Mic",
+ .mask = SND_JACK_MICROPHONE,
+ },
+};
+
+static const struct snd_soc_dapm_widget mt8173_max98090_widgets[] = {
+ SND_SOC_DAPM_SPK("Speaker", NULL),
+ SND_SOC_DAPM_MIC("Int Mic", NULL),
+ SND_SOC_DAPM_HP("Headphone", NULL),
+ SND_SOC_DAPM_MIC("Headset Mic", NULL),
+};
+
+static const struct snd_soc_dapm_route mt8173_max98090_routes[] = {
+ {"Speaker", NULL, "SPKL"},
+ {"Speaker", NULL, "SPKR"},
+ {"DMICL", NULL, "Int Mic"},
+ {"Headphone", NULL, "HPL"},
+ {"Headphone", NULL, "HPR"},
+ {"Headset Mic", NULL, "MICBIAS"},
+ {"IN34", NULL, "Headset Mic"},
+};
+
+static const struct snd_kcontrol_new mt8173_max98090_controls[] = {
+ SOC_DAPM_PIN_SWITCH("Speaker"),
+ SOC_DAPM_PIN_SWITCH("Int Mic"),
+ SOC_DAPM_PIN_SWITCH("Headphone"),
+ SOC_DAPM_PIN_SWITCH("Headset Mic"),
+};
+
+static int mt8173_max98090_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 *codec_dai = rtd->codec_dai;
+
+ return snd_soc_dai_set_sysclk(codec_dai, 0, params_rate(params) * 256,
+ SND_SOC_CLOCK_IN);
+}
+
+static struct snd_soc_ops mt8173_max98090_ops = {
+ .hw_params = mt8173_max98090_hw_params,
+};
+
+static int mt8173_max98090_init(struct snd_soc_pcm_runtime *runtime)
+{
+ int ret;
+ struct snd_soc_card *card = runtime->card;
+ struct snd_soc_codec *codec = runtime->codec;
+
+ /* enable jack detection */
+ ret = snd_soc_card_jack_new(card, "Headphone", SND_JACK_HEADPHONE,
+ &mt8173_max98090_jack, NULL, 0);
+ if (ret) {
+ dev_err(card->dev, "Can't snd_soc_jack_new %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_jack_add_pins(&mt8173_max98090_jack,
+ ARRAY_SIZE(mt8173_max98090_jack_pins),
+ mt8173_max98090_jack_pins);
+ if (ret) {
+ dev_err(card->dev, "Can't snd_soc_jack_add_pins %d\n", ret);
+ return ret;
+ }
+
+ return max98090_mic_detect(codec, &mt8173_max98090_jack);
+}
+
+/* Digital audio interface glue - connects codec <---> CPU */
+static struct snd_soc_dai_link mt8173_max98090_dais[] = {
+ /* Front End DAI links */
+ {
+ .name = "MAX98090 Playback",
+ .stream_name = "MAX98090 Playback",
+ .cpu_dai_name = "DL1",
+ .platform_name = "11220000.mt8173-afe-pcm",
+ .codec_name = "snd-soc-dummy",
+ .codec_dai_name = "snd-soc-dummy-dai",
+ .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
+ .dynamic = 1,
+ .dpcm_playback = 1,
+ },
+ {
+ .name = "MAX98090 Capture",
+ .stream_name = "MAX98090 Capture",
+ .cpu_dai_name = "VUL",
+ .platform_name = "11220000.mt8173-afe-pcm",
+ .codec_name = "snd-soc-dummy",
+ .codec_dai_name = "snd-soc-dummy-dai",
+ .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
+ .dynamic = 1,
+ .dpcm_capture = 1,
+ },
+ /* Back End DAI links */
+ {
+ .name = "Codec",
+ .cpu_dai_name = "I2S",
+ .platform_name = "11220000.mt8173-afe-pcm",
+ .no_pcm = 1,
+ .codec_dai_name = "HiFi",
+ .init = mt8173_max98090_init,
+ .ops = &mt8173_max98090_ops,
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .dpcm_playback = 1,
+ .dpcm_capture = 1,
+ },
+};
+
+static struct snd_soc_card mt8173_max98090_card = {
+ .name = "mt8173-max98090",
+ .dai_link = mt8173_max98090_dais,
+ .num_links = ARRAY_SIZE(mt8173_max98090_dais),
+ .controls = mt8173_max98090_controls,
+ .num_controls = ARRAY_SIZE(mt8173_max98090_controls),
+ .dapm_widgets = mt8173_max98090_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(mt8173_max98090_widgets),
+ .dapm_routes = mt8173_max98090_routes,
+ .num_dapm_routes = ARRAY_SIZE(mt8173_max98090_routes),
+};
+
+static int mt8173_max98090_dev_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &mt8173_max98090_card;
+ struct device_node *codec_node;
+ int ret, i;
+
+ codec_node = of_parse_phandle(pdev->dev.of_node,
+ "mediatek,audio-codec", 0);
+ if (!codec_node) {
+ dev_err(&pdev->dev,
+ "Property 'audio-codec' missing or invalid\n");
+ return -EINVAL;
+ }
+ for (i = 0; i < card->num_links; i++) {
+ if (mt8173_max98090_dais[i].codec_name)
+ continue;
+ mt8173_max98090_dais[i].codec_of_node = codec_node;
+ }
+ card->dev = &pdev->dev;
+
+ ret = snd_soc_register_card(card);
+ if (ret)
+ dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
+ __func__, ret);
+ return ret;
+}
+
+static int mt8173_max98090_dev_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 mt8173_max98090_dt_match[] = {
+ { .compatible = "mediatek,mt8173-max98090", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, mt8173_max98090_dt_match);
+
+static struct platform_driver mt8173_max98090_driver = {
+ .driver = {
+ .name = "mt8173-max98090",
+ .owner = THIS_MODULE,
+ .of_match_table = mt8173_max98090_dt_match,
+#ifdef CONFIG_PM
+ .pm = &snd_soc_pm_ops,
+#endif
+ },
+ .probe = mt8173_max98090_dev_probe,
+ .remove = mt8173_max98090_dev_remove,
+};
+
+module_platform_driver(mt8173_max98090_driver);
+
+/* Module information */
+MODULE_DESCRIPTION("MT8173 MAX98090 ALSA SoC machine driver");
+MODULE_AUTHOR("Koro Chen <koro.chen@xxxxxxxxxxxx>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:mt8173-max98090");
+
--
1.8.1.1.dirty
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