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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-11 00:37:36 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-11 00:37:36 +0400 |
| commit | ec5b103ecfde929004b691f29183255aeeadecd5 (patch) | |
| tree | 3b16d0654c074b5b36d06e56110c7218a8685655 /arch/arm/common | |
| parent | d0048f0b91ee35ab940ec6cbdfdd238c55b12a14 (diff) | |
| parent | 5622ff1a4dd7dcb1c09953d8066a4e7c4c350b2d (diff) | |
| download | linux-ec5b103ecfde929004b691f29183255aeeadecd5.tar.xz | |
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine updates from Vinod Koul:
"This pull brings:
- Andy's DW driver updates
- Guennadi's sh driver updates
- Pl08x driver fixes from Tomasz & Alban
- Improvements to mmp_pdma by Daniel
- TI EDMA fixes by Joel
- New drivers:
- Hisilicon k3dma driver
- Renesas rcar dma driver
- New API for publishing slave driver capablities
- Various fixes across the subsystem by Andy, Jingoo, Sachin etc..."
* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (94 commits)
dma: edma: Remove limits on number of slots
dma: edma: Leave linked to Null slot instead of DUMMY slot
dma: edma: Find missed events and issue them
ARM: edma: Add function to manually trigger an EDMA channel
dma: edma: Write out and handle MAX_NR_SG at a given time
dma: edma: Setup parameters to DMA MAX_NR_SG at a time
dmaengine: pl330: use dma_set_max_seg_size to set the sg limit
dmaengine: dma_slave_caps: remove sg entries
dma: replace devm_request_and_ioremap by devm_ioremap_resource
dma: ste_dma40: Fix potential null pointer dereference
dma: ste_dma40: Remove duplicate const
dma: imx-dma: Remove redundant NULL check
dma: dmagengine: fix function names in comments
dma: add driver for R-Car HPB-DMAC
dma: k3dma: use devm_ioremap_resource() instead of devm_request_and_ioremap()
dma: imx-sdma: Staticize sdma_driver_data structures
pch_dma: Add MODULE_DEVICE_TABLE
dmaengine: PL08x: Add cyclic transfer support
dmaengine: PL08x: Fix reading the byte count in cctl
dmaengine: PL08x: Add support for different maximum transfer size
...
Diffstat (limited to 'arch/arm/common')
| -rw-r--r-- | arch/arm/common/edma.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c index 39ad030ac0c7..117f955a2a06 100644 --- a/arch/arm/common/edma.c +++ b/arch/arm/common/edma.c @@ -1235,6 +1235,23 @@ void edma_resume(unsigned channel) } EXPORT_SYMBOL(edma_resume); +int edma_trigger_channel(unsigned channel) +{ + unsigned ctlr; + unsigned int mask; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + mask = BIT(channel & 0x1f); + + edma_shadow0_write_array(ctlr, SH_ESR, (channel >> 5), mask); + + pr_debug("EDMA: ESR%d %08x\n", (channel >> 5), + edma_shadow0_read_array(ctlr, SH_ESR, (channel >> 5))); + return 0; +} +EXPORT_SYMBOL(edma_trigger_channel); + /** * edma_start - start dma on a channel * @channel: channel being activated |