ASoC: mxs-saif: add record function

1. add different clkmux mode handling
SAIF can use two instances to implement full duplex (playback &
recording) and record saif may work on EXTMASTER mode which is
using other saif's BITCLK&LRCLK.

The clkmux mode could be set in pdata->init() in mach-specific code.
For generic saif driver, it only needs to know who is his master
and the master id is also provided in mach-specific code.

2. support playback and capture simutaneously however the sample
rates can not be different due to hw limitation.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/include/sound/saif.h b/include/sound/saif.h
new file mode 100644
index 000000000000..d0e0de7984ec
--- /dev/null
+++ b/include/sound/saif.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc. 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 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __SOUND_SAIF_H__
+#define __SOUND_SAIF_H__
+
+struct mxs_saif_platform_data {
+        int (*init) (void);
+        int (*get_master_id) (unsigned int saif_id);
+};
+#endif