diff mbox

[02/13] dma: ste_dma40: Parse flags property for new 'high priority channel' request

Message ID 1383732985-18928-3-git-send-email-lee.jones@linaro.org
State Superseded
Headers show

Commit Message

Lee Jones Nov. 6, 2013, 10:16 a.m. UTC 
This is used for MSP (audio) devices which is about to be fully DT:ed.

Cc: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 drivers/dma/ste_dma40.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

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);
 }