[PATCH V2 7/8] dmaengine: bcm2835: add slave_sg support to bcm2835-dma
eric at anholt.net
Wed Feb 17 20:39:25 PST 2016
kernel at martin.sperl.org writes:
> From: Martin Sperl <kernel at martin.sperl.org>
> Add slave_sg support to bcm2835-dma using shared allocation
> code for bcm2835_desc and DMA-control blocks already used by
> Note that bcm2835_dma_callback had to get modified to support
> both modes of operation (cyclic and non-cyclic).
> Tested using:
> * Hifiberry I2S card (using cyclic DMA)
> * fb_st7735r SPI-framebuffer (using slave_sg DMA via spi-bcm2835)
> playing BigBuckBunny for audio and video.
> Signed-off-by: Martin Sperl <kernel at martin.sperl.org>
I would have expected bcm2835_dma_create_cb_chain()'s changes to support
slave DMA to be in this patch rather than the refactor patch. However,
the content of this one and 8/8 are:
Reviewed-by: Eric Anholt <eric at anholt.net>
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