[alsa-devel] [PATCH 08/10] ASoC: kirkwood-dma: remove restriction on sample rates

Russell King rmk+kernel at arm.linux.org.uk
Tue Nov 20 13:20:14 CET 2012


This is part of a patch found in Rabeeh Khoury's git tree for the
cubox.

The kirkwood DMA hardware for ASoC does not impose any restrictions
on the sample rates available, so it's silly to impose an artificial
set in the DMA code.  The restrictions come from the availble clocks
to the I2S module, which are already handled in the I2S part of the
driver.

Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
---
 sound/soc/kirkwood/kirkwood-dma.c |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/sound/soc/kirkwood/kirkwood-dma.c b/sound/soc/kirkwood/kirkwood-dma.c
index 2ba0814..73c90c6 100644
--- a/sound/soc/kirkwood/kirkwood-dma.c
+++ b/sound/soc/kirkwood/kirkwood-dma.c
@@ -22,8 +22,10 @@
 #include "kirkwood.h"
 
 #define KIRKWOOD_RATES \
-	(SNDRV_PCM_RATE_44100 | \
-	 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000)
+	(SNDRV_PCM_RATE_8000_192000 |		\
+	 SNDRV_PCM_RATE_CONTINUOUS |		\
+	 SNDRV_PCM_RATE_KNOT)
+
 #define KIRKWOOD_FORMATS \
 	(SNDRV_PCM_FMTBIT_S16_LE | \
 	 SNDRV_PCM_FMTBIT_S24_LE | \
@@ -43,8 +45,8 @@ static struct snd_pcm_hardware kirkwood_dma_snd_hw = {
 		 SNDRV_PCM_INFO_PAUSE),
 	.formats		= KIRKWOOD_FORMATS,
 	.rates			= KIRKWOOD_RATES,
-	.rate_min		= 44100,
-	.rate_max		= 96000,
+	.rate_min		= 8000,
+	.rate_max		= 384000,
 	.channels_min		= 1,
 	.channels_max		= 2,
 	.buffer_bytes_max	= KIRKWOOD_SND_MAX_PERIOD_BYTES * KIRKWOOD_SND_MAX_PERIODS,
-- 
1.7.4.4



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