[ALSA] ASoC CS4270 codec device driver

This patch adds ALSA SoC support for the Cirrus Logic CS4270 codec.  The
following features are suppored:
1) Stand-alone and software mode
2) Software mode via I2C only
3) Master mode, not Slave
4) No power management

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 28 insertions, 0 deletions

diff --git a/sound/soc/codecs/cs4270.h b/sound/soc/codecs/cs4270.h
new file mode 100644
index 000000000000..0ced49b7804d
--- /dev/null
+++ b/sound/soc/codecs/cs4270.h
@@ -0,0 +1,28 @@
+/*
+ * Cirrus Logic CS4270 ALSA SoC Codec Driver
+ *
+ * Author: Timur Tabi <timur@freescale.com>
+ *
+ * Copyright 2007 Freescale Semiconductor, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#ifndef _CS4270_H
+#define _CS4270_H
+
+/*
+ * The ASoC codec DAI structure for the CS4270.  Assign this structure to
+ * the .codec_dai field of your machine driver's snd_soc_dai_link structure.
+ */
+extern struct snd_soc_codec_dai cs4270_dai;
+
+/*
+ * The ASoC codec device structure for the CS4270.  Assign this structure
+ * to the .codec_dev field of your machine driver's snd_soc_device
+ * structure.
+ */
+extern struct snd_soc_codec_device soc_codec_device_cs4270;
+
+#endif