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authorMichael Hennerich <michael.hennerich@analog.com>2007-08-03 17:43:29 +0800
committerBryan Wu <bryan.wu@analog.com>2007-08-03 17:43:29 +0800
commita924db7c00655447c5228bd74da070c69b7cadbc (patch)
tree5e19fb9a35edcc4b0066fe529d3c9f8f828f147c /arch/blackfin/kernel
parentBlackfin arch: Add support for the M25P16 SPI FLash (diff)
downloadlinux-dev-a924db7c00655447c5228bd74da070c69b7cadbc.tar.xz
linux-dev-a924db7c00655447c5228bd74da070c69b7cadbc.zip
Blackfin arch: Add option to priorize DMA over Core
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Diffstat (limited to 'arch/blackfin/kernel')
-rw-r--r--arch/blackfin/kernel/bfin_dma_5xx.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index 7e2201908356..62f5a35c13ee 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -73,6 +73,11 @@ static int __init blackfin_dma_init(void)
/* Mark MEMDMA Channel 0 as requested since we're using it internally */
dma_ch[CH_MEM_STREAM0_DEST].chan_status = DMA_CHANNEL_REQUESTED;
dma_ch[CH_MEM_STREAM0_SRC].chan_status = DMA_CHANNEL_REQUESTED;
+
+#if defined(CONFIG_DEB_DMA_URGENT)
+ bfin_write_EBIU_DDRQUE(bfin_read_EBIU_DDRQUE()
+ | DEB1_URGENT | DEB2_URGENT | DEB3_URGENT);
+#endif
return 0;
}