ASoC: fsi: add master clock control functions

Current FSI driver required set_rate() platform callback function
to set audio clock if it was master mode,
because it seemed that CPG/FSI-DIV clocks calculation depend on
platform/board/cpu.
But it was calculable regardless of platform.
This patch supports audio clock calculation method,
but the sampling rate under 32kHz is not supported at this point.
Old type set_rate() is still supported now,
but it will be deleted on next version

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/sound/sh_fsi.h b/include/sound/sh_fsi.h
index 906010344dd7..27ee1dcc3e2e 100644
--- a/include/sound/sh_fsi.h
+++ b/include/sound/sh_fsi.h
@@ -26,6 +26,7 @@
  * A:  inversion
  * B:  format mode
  * C:  chip specific
+ * D:  clock selecter if master mode
  */
 
 /* A: clock inversion */
@@ -44,6 +45,11 @@
 #define SH_FSI_OPTION_MASK      0x00000F00
 #define SH_FSI_ENABLE_STREAM_MODE       (1 << 8) /* for 16bit data */
 
+/* D:  clock selecter if master mode */
+#define SH_FSI_CLK_MASK         0x0000F000
+#define SH_FSI_CLK_EXTERNAL     (1 << 12)
+#define SH_FSI_CLK_CPG          (2 << 12) /* FSIxCK + FSI-DIV */
+
 /*
  * set_rate return value
  *