diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2017-01-13 16:02:03 +0100 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2017-01-14 16:03:33 +0100 |
| commit | 49873e99b7b5d59eef238199fd55f8345e860824 (patch) | |
| tree | 70bad7f632a0711450c277856cf8a0946c753e6b /drivers/dma/ste_dma40.c | |
| parent | Linux 4.10-rc2 (diff) | |
| download | linux-49873e99b7b5d59eef238199fd55f8345e860824.tar.xz linux-49873e99b7b5d59eef238199fd55f8345e860824.zip | |
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: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/ste_dma40.c')
| -rw-r--r-- | drivers/dma/ste_dma40.c | 6 |
1 files 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 |