[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/soc/codecs/dmic.c b/src/kernel/linux/v4.14/sound/soc/codecs/dmic.c
new file mode 100644
index 0000000..b88a1ee
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/soc/codecs/dmic.c
@@ -0,0 +1,140 @@
+/*
+ * dmic.c -- SoC audio for Generic Digital MICs
+ *
+ * Author: Liam Girdwood <lrg@slimlogic.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+static int dmic_daiops_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ struct gpio_desc *dmic_en = snd_soc_dai_get_drvdata(dai);
+
+ if (!dmic_en)
+ return 0;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ gpiod_set_value(dmic_en, 1);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ gpiod_set_value(dmic_en, 0);
+ break;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops dmic_dai_ops = {
+ .trigger = dmic_daiops_trigger,
+};
+
+static struct snd_soc_dai_driver dmic_dai = {
+ .name = "dmic-hifi",
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 8,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .formats = SNDRV_PCM_FMTBIT_S32_LE
+ | SNDRV_PCM_FMTBIT_S24_LE
+ | SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .ops = &dmic_dai_ops,
+};
+
+static int dmic_codec_probe(struct snd_soc_codec *codec)
+{
+ struct gpio_desc *dmic_en;
+
+ dmic_en = devm_gpiod_get_optional(codec->dev,
+ "dmicen", GPIOD_OUT_LOW);
+ if (IS_ERR(dmic_en))
+ return PTR_ERR(dmic_en);
+
+ snd_soc_codec_set_drvdata(codec, dmic_en);
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget dmic_dapm_widgets[] = {
+ SND_SOC_DAPM_AIF_OUT("DMIC AIF", "Capture", 0,
+ SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_INPUT("DMic"),
+};
+
+static const struct snd_soc_dapm_route intercon[] = {
+ {"DMIC AIF", NULL, "DMic"},
+};
+
+static const struct snd_soc_codec_driver soc_dmic = {
+ .probe = dmic_codec_probe,
+ .component_driver = {
+ .dapm_widgets = dmic_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(dmic_dapm_widgets),
+ .dapm_routes = intercon,
+ .num_dapm_routes = ARRAY_SIZE(intercon),
+ },
+};
+
+static int dmic_dev_probe(struct platform_device *pdev)
+{
+ return snd_soc_register_codec(&pdev->dev,
+ &soc_dmic, &dmic_dai, 1);
+}
+
+static int dmic_dev_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_codec(&pdev->dev);
+ return 0;
+}
+
+MODULE_ALIAS("platform:dmic-codec");
+
+static const struct of_device_id dmic_dev_match[] = {
+ {.compatible = "dmic-codec"},
+ {}
+};
+
+static struct platform_driver dmic_driver = {
+ .driver = {
+ .name = "dmic-codec",
+ .of_match_table = dmic_dev_match,
+ },
+ .probe = dmic_dev_probe,
+ .remove = dmic_dev_remove,
+};
+
+module_platform_driver(dmic_driver);
+
+MODULE_DESCRIPTION("Generic DMIC driver");
+MODULE_AUTHOR("Liam Girdwood <lrg@slimlogic.co.uk>");
+MODULE_LICENSE("GPL");