ASoC: davinci-mcasp: Choose PCM driver based on configured DMA controller

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Find the configured DMA controller by asking for a DMA channel in the
probe phase and releasing it right after. The controller device can be
found via the dma_chan struct and the controller is recognized from
the compatible property of its device node. The patch assumes EDMA if
there is no device node.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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Jyri Sarha 2015-06-02 23:09:34 +03:00 • committed by Mark Brown

parent 19db62ea05

commit 9fbd58cf4a

1 changed files with 60 additions and 10 deletions

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sound/soc/davinci/davinci-mcasp.c

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