ASoC: mediatek: Add machine driver for MAX98090 codec

This is the DPCM based machine driver with MAX98090

Signed-off-by: Koro Chen <koro.chen@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/mt8173-max98090.txt b/Documentation/devicetree/bindings/sound/mt8173-max98090.txt
new file mode 100644 (file)
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 c622280cacd913d9654cc030b137366dc0be8456..0bfd2a02a4083e001d6f7da6912e0b419d6f7b2f 100644 (file)
--- 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 5f27cc772f66c319e3264449aff0d19f7d6f0819..08fa765b1f0b27f4135c540764765aed501ee586 100644 (file)
--- 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 (file)
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@mediatek.com>
+ *
+ * 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@mediatek.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:mt8173-max98090");
+