1 files changed, 105 insertions, 0 deletions

diff --git a/sound/soc/codecs/dmic.c b/sound/soc/codecs/dmic.c
new file mode 100644
index 000000000000..f9a87737ec16
--- /dev/null
+++ b/sound/soc/codecs/dmic.c
@@ -0,0 +1,105 @@
+/*
+ * 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/platform_device.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+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,
+        },
+};
+
+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 int dmic_probe(struct snd_soc_codec *codec)
+{
+        struct snd_soc_dapm_context *dapm = &codec->dapm;
+
+        snd_soc_dapm_new_controls(dapm, dmic_dapm_widgets,
+                                  ARRAY_SIZE(dmic_dapm_widgets));
+        snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon));
+        snd_soc_dapm_new_widgets(dapm);
+
+        return 0;
+}
+
+static struct snd_soc_codec_driver soc_dmic = {
+        .probe  = dmic_probe,
+};
+
+static int __devinit dmic_dev_probe(struct platform_device *pdev)
+{
+        return snd_soc_register_codec(&pdev->dev,
+                        &soc_dmic, &dmic_dai, 1);
+}
+
+static int __devexit dmic_dev_remove(struct platform_device *pdev)
+{
+        snd_soc_unregister_codec(&pdev->dev);
+        return 0;
+}
+
+MODULE_ALIAS("platform:dmic-codec");
+
+static struct platform_driver dmic_driver = {
+        .driver = {
+                .name = "dmic-codec",
+                .owner = THIS_MODULE,
+        },
+        .probe = dmic_dev_probe,
+        .remove = __devexit_p(dmic_dev_remove),
+};
+
+static int __init dmic_init(void)
+{
+        return platform_driver_register(&dmic_driver);
+}
+module_init(dmic_init);
+
+static void __exit dmic_exit(void)
+{
+        platform_driver_unregister(&dmic_driver);
+}
+module_exit(dmic_exit);
+
+MODULE_DESCRIPTION("Generic DMIC driver");
+MODULE_AUTHOR("Liam Girdwood <lrg@slimlogic.co.uk>");
+MODULE_LICENSE("GPL");