[PATCH 02/13] dma: ste_dma40: Parse flags property for new 'high priority channel' request
From: Lee Jones <hidden>
Date: 2013-11-06 10:19:54
Also in:
lkml
Subsystem:
arm/nomadik/ux500 architectures, dma generic offload engine subsystem, the rest · Maintainers:
Linus Walleij, Vinod Koul, Linus Torvalds
This is used for MSP (audio) devices which is about to be fully DT:ed. Cc: Vinod Koul <redacted> Signed-off-by: Lee Jones <redacted> --- drivers/dma/ste_dma40.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index b8c031b..00a2de9 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c@@ -2409,6 +2409,7 @@ static void d40_set_prio_realtime(struct d40_chan *d40c) #define D40_DT_FLAGS_DIR(flags) ((flags >> 1) & 0x1) #define D40_DT_FLAGS_BIG_ENDIAN(flags) ((flags >> 2) & 0x1) #define D40_DT_FLAGS_FIXED_CHAN(flags) ((flags >> 3) & 0x1) +#define D40_DT_FLAGS_HIGH_PRIO(flags) ((flags >> 4) & 0x1) static struct dma_chan *d40_xlate(struct of_phandle_args *dma_spec, struct of_dma *ofdma)
@@ -2446,6 +2447,9 @@ static struct dma_chan *d40_xlate(struct of_phandle_args *dma_spec, cfg.use_fixed_channel = true; } + if (D40_DT_FLAGS_HIGH_PRIO(flags)) + cfg.high_priority = true; + return dma_request_channel(cap, stedma40_filter, &cfg); }
--
1.8.1.2