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: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
drivers/dma/ste_dma40.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 8684d11b29bb..2f0852dfbd1b 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -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
--
2.9.3
--
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