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Diffstat (limited to 'arch/arm/plat-samsung/dma-ops.c')
-rw-r--r--arch/arm/plat-samsung/dma-ops.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/arm/plat-samsung/dma-ops.c b/arch/arm/plat-samsung/dma-ops.c
index 93a994a5dd8f..2cded872f22b 100644
--- a/arch/arm/plat-samsung/dma-ops.c
+++ b/arch/arm/plat-samsung/dma-ops.c
@@ -18,23 +18,24 @@
#include <mach/dma.h>
-static inline bool pl330_filter(struct dma_chan *chan, void *param)
-{
- struct dma_pl330_peri *peri = chan->private;
- return peri->peri_id == (unsigned)param;
-}
-
static unsigned samsung_dmadev_request(enum dma_ch dma_ch,
struct samsung_dma_info *info)
{
struct dma_chan *chan;
dma_cap_mask_t mask;
struct dma_slave_config slave_config;
+ void *filter_param;
dma_cap_zero(mask);
dma_cap_set(info->cap, mask);
- chan = dma_request_channel(mask, pl330_filter, (void *)dma_ch);
+ /*
+ * If a dma channel property of a device node from device tree is
+ * specified, use that as the fliter parameter.
+ */
+ filter_param = (dma_ch == DMACH_DT_PROP) ? (void *)info->dt_dmach_prop :
+ (void *)dma_ch;
+ chan = dma_request_channel(mask, pl330_filter, filter_param);
if (info->direction == DMA_FROM_DEVICE) {
memset(&slave_config, 0, sizeof(struct dma_slave_config));