ASoC: DMIC codec: Adding a generic DMIC codec

This codec is to be used by the DMIC driver to
control the DMIC codec.  This driver will be used on future
implementations of the DMIC driver to support codec specific
features.

At this time, the codec driver just registers the codec DAI.

Signed-off-by: David Lambert <dlambert@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 0f33db2be25a5e57e2900c1257da8846d2419d46..f6c6d316ac675c5148f8ec1a550e320dea11d6a1 100644 (file)
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -166,6 +166,9 @@ config SND_SOC_L3
 config SND_SOC_DA7210
         tristate
 
+config SND_SOC_DMIC
+       tristate
+
 config SND_SOC_MAX98088
        tristate
 

diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 10e5e099334a54502f058c7247af72d08e8d1316..9139cf95ff70eb5148b8d1de7b279f1283311a84 100644 (file)
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -14,6 +14,7 @@ snd-soc-cs42l51-objs := cs42l51.o
 snd-soc-cs4270-objs := cs4270.o
 snd-soc-cx20442-objs := cx20442.o
 snd-soc-da7210-objs := da7210.o
+snd-soc-dmic-objs := dmic.o
 snd-soc-l3-objs := l3.o
 snd-soc-max98088-objs := max98088.o
 snd-soc-pcm3008-objs := pcm3008.o
@@ -91,6 +92,7 @@ obj-$(CONFIG_SND_SOC_CS42L51) += snd-soc-cs42l51.o
 obj-$(CONFIG_SND_SOC_CS4270)   += snd-soc-cs4270.o
 obj-$(CONFIG_SND_SOC_CX20442)  += snd-soc-cx20442.o
 obj-$(CONFIG_SND_SOC_DA7210)   += snd-soc-da7210.o
+obj-$(CONFIG_SND_SOC_DMIC)     += snd-soc-dmic.o
 obj-$(CONFIG_SND_SOC_L3)       += snd-soc-l3.o
 obj-$(CONFIG_SND_SOC_JZ4740_CODEC)     += snd-soc-jz4740-codec.o
 obj-$(CONFIG_SND_SOC_MAX98088) += snd-soc-max98088.o

diff --git a/sound/soc/codecs/dmic.c b/sound/soc/codecs/dmic.c
new file mode 100644 (file)
index 0000000..57e9dac
--- /dev/null
+++ b/sound/soc/codecs/dmic.c
@@ -0,0 +1,81 @@
+/*
+ * 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 struct snd_soc_codec_driver soc_dmic = {};
+
+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");