[alsa-devel] [RFC PATCH] ASoC: omap-mcbsp: Add support for highter rate up to 384000

[Michael Trimarchi]

Add support for highter rate up to 384000Khz. There are codecs in the
market that can play up to this frequency.
Test was done just with:

#define OMAP_MCBSP_RATES	(SNDRV_PCM_RATE_8000_192000)

playing wav file 32bit/192000Khz stereo. Some glitch has observed
but this should depend on the selected min buffer bytes that was
left untouched in aplay and in the omap-pcm driver.

Signed-off-by: Michael Trimarchi <michael at amarulasolutions.com>
---
 sound/soc/omap/omap-mcbsp.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index 7483efb..1e95f6a 100644
--- a/sound/soc/omap/omap-mcbsp.c
+++ b/sound/soc/omap/omap-mcbsp.c
@@ -39,7 +39,9 @@
 #include "mcbsp.h"
 #include "omap-mcbsp.h"
 
-#define OMAP_MCBSP_RATES	(SNDRV_PCM_RATE_8000_96000)
+#define OMAP_MCBSP_RATES	(SNDRV_PCM_RATE_8000_192000 |		\
+				 SNDRV_PCM_RATE_CONTINUOUS |		\
+				 SNDRV_PCM_RATE_KNOT)
 
 #define OMAP_MCBSP_SOC_SINGLE_S16_EXT(xname, xmin, xmax, \
 	xhandler_get, xhandler_put) \
@@ -574,11 +576,15 @@ static struct snd_soc_dai_driver omap_mcbsp_dai = {
 		.channels_max = 16,
 		.rates = OMAP_MCBSP_RATES,
 		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
+		.rate_min = 8000,
+		.rate_max = 384000,
 	},
 	.capture = {
 		.channels_min = 1,
 		.channels_max = 16,
 		.rates = OMAP_MCBSP_RATES,
+		.rate_min = 8000,
+		.rate_max = 384000,
 		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
 	},
 	.ops = &mcbsp_dai_ops,
-- 
1.7.9.5