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authorLinus Torvalds <torvalds@linux-foundation.org>2012-08-01 16:41:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-08-01 16:41:07 -0700
commita6dc77254b3c3eb0307b372b77b861d5cd2ead08 (patch)
tree5770a808b0527eebeff43f16508ea8f03e459b58 /arch/arm/plat-spear
parent02a6ec6a24077ffda33b99cb193e8a536b90711d (diff)
parent0e52d987c0b242fe3fe4c8e9732bd663cce0e50b (diff)
downloadlinux-a6dc77254b3c3eb0307b372b77b861d5cd2ead08.tar.bz2
Merge branch 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM DMA engine updates from Russell King: "This looks scary at first glance, but what it is is: - a rework of the sa11x0 DMA engine driver merged during the previous cycle, to extract a common set of helper functions for DMA engine implementations. - conversion of amba-pl08x.c to use these helper functions. - addition of OMAP DMA engine driver (using these helper functions), and conversion of some of the OMAP DMA users to use DMA engine. Nothing in the helper functions is ARM specific, so I hope that other implementations can consolidate some of their code by making use of these helpers. This has been sitting in linux-next most of the merge cycle, and has been tested by several OMAP folk. I've tested it on sa11x0 platforms, and given it my best shot on my broken platforms which have the amba-pl08x controller. The last point is the addition to feature-removal-schedule.txt, which will have a merge conflict. Between myself and TI, we're planning to remove the old TI DMA implementation next year." Fix up trivial add/add conflicts in Documentation/feature-removal-schedule.txt and drivers/dma/{Kconfig,Makefile} * 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm: (53 commits) ARM: 7481/1: OMAP2+: omap2plus_defconfig: enable OMAP DMA engine ARM: 7464/1: mmc: omap_hsmmc: ensure probe returns error if DMA channel request fails Add feature removal of old OMAP private DMA implementation mtd: omap2: remove private DMA API implementation mtd: omap2: add DMA engine support spi: omap2-mcspi: remove private DMA API implementation spi: omap2-mcspi: add DMA engine support ARM: omap: remove mmc platform data dma_mask and initialization mmc: omap: remove private DMA API implementation mmc: omap: add DMA engine support mmc: omap_hsmmc: remove private DMA API implementation mmc: omap_hsmmc: add DMA engine support dmaengine: omap: add support for cyclic DMA dmaengine: omap: add support for setting fi dmaengine: omap: add support for returning residue in tx_state method dmaengine: add OMAP DMA engine driver dmaengine: sa11x0-dma: add cyclic DMA support dmaengine: sa11x0-dma: fix DMA residue support dmaengine: PL08x: ensure all descriptors are freed when channel is released dmaengine: PL08x: get rid of write only pool_ctr and free_txd locking ...
Diffstat (limited to 'arch/arm/plat-spear')
-rw-r--r--arch/arm/plat-spear/include/plat/pl080.h6
-rw-r--r--arch/arm/plat-spear/pl080.c10
2 files changed, 7 insertions, 9 deletions
diff --git a/arch/arm/plat-spear/include/plat/pl080.h b/arch/arm/plat-spear/include/plat/pl080.h
index 2bc6b54460a8..eb6590ded40d 100644
--- a/arch/arm/plat-spear/include/plat/pl080.h
+++ b/arch/arm/plat-spear/include/plat/pl080.h
@@ -14,8 +14,8 @@
#ifndef __PLAT_PL080_H
#define __PLAT_PL080_H
-struct pl08x_dma_chan;
-int pl080_get_signal(struct pl08x_dma_chan *ch);
-void pl080_put_signal(struct pl08x_dma_chan *ch);
+struct pl08x_channel_data;
+int pl080_get_signal(const struct pl08x_channel_data *cd);
+void pl080_put_signal(const struct pl08x_channel_data *cd, int signal);
#endif /* __PLAT_PL080_H */
diff --git a/arch/arm/plat-spear/pl080.c b/arch/arm/plat-spear/pl080.c
index 12cf27f935f9..cfa1199d0f4a 100644
--- a/arch/arm/plat-spear/pl080.c
+++ b/arch/arm/plat-spear/pl080.c
@@ -27,9 +27,8 @@ struct {
unsigned char val;
} signals[16] = {{0, 0}, };
-int pl080_get_signal(struct pl08x_dma_chan *ch)
+int pl080_get_signal(const struct pl08x_channel_data *cd)
{
- const struct pl08x_channel_data *cd = ch->cd;
unsigned int signal = cd->min_signal, val;
unsigned long flags;
@@ -63,18 +62,17 @@ int pl080_get_signal(struct pl08x_dma_chan *ch)
return signal;
}
-void pl080_put_signal(struct pl08x_dma_chan *ch)
+void pl080_put_signal(const struct pl08x_channel_data *cd, int signal)
{
- const struct pl08x_channel_data *cd = ch->cd;
unsigned long flags;
spin_lock_irqsave(&lock, flags);
/* if signal is not used */
- if (!signals[cd->min_signal].busy)
+ if (!signals[signal].busy)
BUG();
- signals[cd->min_signal].busy--;
+ signals[signal].busy--;
spin_unlock_irqrestore(&lock, flags);
}