ALSA: ASoC: fix SNDCTL_DSP_SYNC support in Freescale 8610 sound drivers

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If an OSS application calls SNDCTL_DSP_SYNC, then ALSA will call the driver's
_hw_params and _prepare functions again.  On the Freescale MPC8610 DMA ASoC
driver, this caused the DMA controller to be unneccessarily re-programmed, and
apparently it doesn't like that.  The DMA will then not operate when
instructed.  This patch relocates much of the DMA programming to
fsl_dma_open(), which is called only once.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Timur Tabi 2008-08-01 14:58:44 -05:00 • committed by Takashi Iwai

parent 11589418a1

commit bf9c8c9dde

1 changed files with 124 additions and 111 deletions

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sound/soc/fsl/fsl_dma.c

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