dmaengine: at_xdmac: add runtime pm support

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Add runtime PM support which involves disabling/enabling controller's
clocks on runtime PM suspend/resume ops. The runtime suspend/resume is
done based on the work submitted to the controller: runtime resume is
happening on at_xdmac_start_xfer() and runtime suspend on
at_xdmac_tasklet().

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20221117131547.293044-2-claudiu.beznea@microchip.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Claudiu Beznea 2022-11-17 15:15:45 +02:00 • committed by Vinod Koul

parent 610b573e51

commit 650b0e990c

1 changed files with 202 additions and 15 deletions

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drivers/dma/at_xdmac.c

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