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authorTroy Kisky <troy.kisky@boundarydevices.com>2009-11-18 17:49:53 -0700
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-11-19 10:48:08 +0000
commit1e224f322bf22280957a5f76164d848526ed9b08 (patch)
treebdf7af09be46172aa6048bb25fda35980e8b2159 /arch/arm
parent1587ea31572e25a0a2c9c491b7f8c937b6c0454e (diff)
ASoC: DaVinci: pcm, fix underrun by using sram
Fix underruns by using dma to copy 1st to sram in a ping/pong buffer style and then copying from the sram to the ASP. This also has the advantage of tolerating very long interrupt latency on dma completion. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-davinci/include/mach/asp.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/include/mach/asp.h b/arch/arm/mach-davinci/include/mach/asp.h
index 019c6473341..e07f70ed7c5 100644
--- a/arch/arm/mach-davinci/include/mach/asp.h
+++ b/arch/arm/mach-davinci/include/mach/asp.h
@@ -57,6 +57,8 @@ struct snd_platform_data {
* when compared to previous behavior.
*/
unsigned enable_channel_combine:1;
+ unsigned sram_size_playback;
+ unsigned sram_size_capture;
/* McASP specific fields */
int tdm_slots;