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authorLinus Torvalds <torvalds@linux-foundation.org>2014-08-11 16:14:01 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-11 16:14:01 +0200
commitc7a19c795b4b0a3232c157ed29eea85077e95da6 (patch)
treed3916dcdea74b55453694c9f31b95b6d906e3202 /drivers/dma/sh/shdmac.c
parentMerge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/l... (diff)
parentdmaengine: sun6i: depends on RESET_CONTROLLER (diff)
downloadlinux-c7a19c795b4b0a3232c157ed29eea85077e95da6.tar.xz
linux-c7a19c795b4b0a3232c157ed29eea85077e95da6.zip
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dma updates from Vinod Koul: "Some notable changes are: - new driver for AMBA AXI NBPF by Guennadi - new driver for sun6i controller by Maxime - pl330 drivers fixes from Lar's - sh-dma updates and fixes from Laurent, Geert and Kuninori - Documentation updates from Geert - drivers fixes and updates spread over dw, edma, freescale, mpc512x etc.." * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (72 commits) dmaengine: sun6i: depends on RESET_CONTROLLER dma: at_hdmac: fix invalid remaining bytes detection dmaengine: nbpfaxi: don't build this driver where it cannot be used dmaengine: nbpf_error_get_channel() can be static dma: pl08x: Use correct specifier for size_t values dmaengine: Remove the context argument to the prep_dma_cyclic operation dmaengine: nbpfaxi: convert to tasklet dmaengine: nbpfaxi: fix a theoretical race dmaengine: add a driver for AMBA AXI NBPF DMAC IP cores dmaengine: add device tree binding documentation for the nbpfaxi driver dmaengine: edma: Do not register second device when booted with DT dmaengine: edma: Do not change the error code returned from edma_alloc_slot dmaengine: rcar-dmac: Add device tree bindings documentation dmaengine: shdma: Allocate cyclic sg list dynamically dmaengine: shdma: Make channel filter ignore unrelated devices dmaengine: sh: Rework Kconfig and Makefile dmaengine: sun6i: Fix memory leaks dmaengine: sun6i: Free the interrupt before killing the tasklet dmaengine: sun6i: Remove switch statement from buswidth convertion routine dmaengine: of: kconfig: select DMA_ENGINE when DMA_OF is selected ...
Diffstat (limited to 'drivers/dma/sh/shdmac.c')
-rw-r--r--drivers/dma/sh/shdmac.c15
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/dma/sh/shdmac.c b/drivers/dma/sh/shdmac.c
index 146d5df926db..58eb85770eba 100644
--- a/drivers/dma/sh/shdmac.c
+++ b/drivers/dma/sh/shdmac.c
@@ -38,12 +38,12 @@
#include "../dmaengine.h"
#include "shdma.h"
-/* DMA register */
-#define SAR 0x00
-#define DAR 0x04
-#define TCR 0x08
-#define CHCR 0x0C
-#define DMAOR 0x40
+/* DMA registers */
+#define SAR 0x00 /* Source Address Register */
+#define DAR 0x04 /* Destination Address Register */
+#define TCR 0x08 /* Transfer Count Register */
+#define CHCR 0x0C /* Channel Control Register */
+#define DMAOR 0x40 /* DMA Operation Register */
#define TEND 0x18 /* USB-DMAC */
@@ -239,9 +239,8 @@ static void dmae_init(struct sh_dmae_chan *sh_chan)
{
/*
* Default configuration for dual address memory-memory transfer.
- * 0x400 represents auto-request.
*/
- u32 chcr = DM_INC | SM_INC | 0x400 | log2size_to_chcr(sh_chan,
+ u32 chcr = DM_INC | SM_INC | RS_AUTO | log2size_to_chcr(sh_chan,
LOG2_DEFAULT_XFER_SIZE);
sh_chan->xmit_shift = calc_xmit_shift(sh_chan, chcr);
chcr_write(sh_chan, chcr);