[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/soc/codecs/max98357a.c b/src/kernel/linux/v4.14/sound/soc/codecs/max98357a.c
new file mode 100644
index 0000000..426ed2d
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/soc/codecs/max98357a.c
@@ -0,0 +1,149 @@
+/* Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
+ *
+ * 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.
+ *
+ * max98357a.c -- MAX98357A ALSA SoC Codec driver
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <sound/soc-dapm.h>
+
+static int max98357a_daiops_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ struct gpio_desc *sdmode = snd_soc_dai_get_drvdata(dai);
+
+ if (!sdmode)
+ return 0;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ gpiod_set_value(sdmode, 1);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ gpiod_set_value(sdmode, 0);
+ break;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget max98357a_dapm_widgets[] = {
+ SND_SOC_DAPM_OUTPUT("Speaker"),
+};
+
+static const struct snd_soc_dapm_route max98357a_dapm_routes[] = {
+ {"Speaker", NULL, "HiFi Playback"},
+};
+
+static int max98357a_codec_probe(struct snd_soc_codec *codec)
+{
+ struct gpio_desc *sdmode;
+
+ sdmode = devm_gpiod_get_optional(codec->dev, "sdmode", GPIOD_OUT_LOW);
+ if (IS_ERR(sdmode))
+ return PTR_ERR(sdmode);
+
+ snd_soc_codec_set_drvdata(codec, sdmode);
+
+ return 0;
+}
+
+static const struct snd_soc_codec_driver max98357a_codec_driver = {
+ .probe = max98357a_codec_probe,
+ .component_driver = {
+ .dapm_widgets = max98357a_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(max98357a_dapm_widgets),
+ .dapm_routes = max98357a_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(max98357a_dapm_routes),
+ },
+};
+
+static const struct snd_soc_dai_ops max98357a_dai_ops = {
+ .trigger = max98357a_daiops_trigger,
+};
+
+static struct snd_soc_dai_driver max98357a_dai_driver = {
+ .name = "HiFi",
+ .playback = {
+ .stream_name = "HiFi Playback",
+ .formats = SNDRV_PCM_FMTBIT_S16 |
+ SNDRV_PCM_FMTBIT_S24 |
+ SNDRV_PCM_FMTBIT_S32,
+ .rates = SNDRV_PCM_RATE_8000 |
+ SNDRV_PCM_RATE_16000 |
+ SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .rate_min = 8000,
+ .rate_max = 96000,
+ .channels_min = 1,
+ .channels_max = 2,
+ },
+ .ops = &max98357a_dai_ops,
+};
+
+static int max98357a_platform_probe(struct platform_device *pdev)
+{
+ return snd_soc_register_codec(&pdev->dev, &max98357a_codec_driver,
+ &max98357a_dai_driver, 1);
+}
+
+static int max98357a_platform_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_codec(&pdev->dev);
+
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id max98357a_device_id[] = {
+ { .compatible = "maxim,max98357a" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, max98357a_device_id);
+#endif
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id max98357a_acpi_match[] = {
+ { "MX98357A", 0 },
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, max98357a_acpi_match);
+#endif
+
+static struct platform_driver max98357a_platform_driver = {
+ .driver = {
+ .name = "max98357a",
+ .of_match_table = of_match_ptr(max98357a_device_id),
+ .acpi_match_table = ACPI_PTR(max98357a_acpi_match),
+ },
+ .probe = max98357a_platform_probe,
+ .remove = max98357a_platform_remove,
+};
+module_platform_driver(max98357a_platform_driver);
+
+MODULE_DESCRIPTION("Maxim MAX98357A Codec Driver");
+MODULE_LICENSE("GPL v2");