Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 49873e99 authored by Linus Walleij's avatar Linus Walleij Committed by Vinod Koul
Browse files

dmaengine: ste_dma40: indicate directions on channels 



Since the introduction of the .directions flags, ste_dma40 was
never patched to indicate which transfer directions it can manage.
This causes a problem when trying to use the dmaengine for generic
ALSA SoC DMA:

ux500-msp-i2s.1: Failed to get DMA channel capabilities, falling
   back to period counting: -6

This patch fixes this issue by indicating the supported transfer
directions for slave and memcpy channels.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 0c744ea4

drivers/dma/ste_dma40.c

+4 −2
Original line number Diff line number Diff line
@@ -2809,12 +2809,14 @@ static void __init d40_chan_init(struct d40_base *base, struct dma_device *dma, 


static void d40_ops_init(struct d40_base *base, struct dma_device *dev)

{

	if (dma_has_cap(DMA_SLAVE, dev->cap_mask))

	if (dma_has_cap(DMA_SLAVE, dev->cap_mask)) {

		dev->device_prep_slave_sg = d40_prep_slave_sg;

		dev->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);

	}



	if (dma_has_cap(DMA_MEMCPY, dev->cap_mask)) {

		dev->device_prep_dma_memcpy = d40_prep_memcpy;



		dev->directions = BIT(DMA_MEM_TO_MEM);

		/*

		 * This controller can only access address at even

		 * 32bit boundaries, i.e. 2^2