[PATCH 02/13] dma: ste_dma40: Parse flags property for new 'high priority channel' request
From: Lee Jones
Date: Wed Nov 06 2013 - 05:19:57 EST
This is used for MSP (audio) devices which is about to be fully DT:ed.
Cc: Vinod Koul <vinod.koul@xxxxxxxxx>
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
---
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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/