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7407048bec
linux/drivers/dma
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Fabio Baltieri 7407048bec dmaengine: ste_dma40: add software lli support 
This patch add support to manage LLI by SW for select phy channels.

There is a HW issue in certain controllers due to which on certain
occassions HW LLI cannot be used on some physical channels.  To avoid
the HW issue on a specific phy channel, the phy channel number can be
added to the list of soft_lli_channels and there after all the transfers
on that channel will use software LLI, for peripheral to memory
transfers.

SoftLLI introduces relink overhead, that could impact performace for
certain use cases.

This is based on a previous patch of Narayanan Gopalakrishnan.

Cc: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
2013-01-14 10:51:08 +01:00
..
ioat Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-12-12 18:07:07 -08:00
ipu dma: ipu: rename mach/ipu.h to include/linux/dma/ipu-dma.h 2012-10-15 10:03:12 +08:00
ppc4xx dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
sh dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
amba-pl08x.c drivers/dma/amba-pl08x.c: fix error return code 2012-08-22 09:51:04 +05:30
at_hdmac_regs.h ARM: at91: move platform_data definitions 2012-09-14 11:16:40 +02:00
at_hdmac.c Sound updates for 3.7-rc1 2012-10-09 07:07:14 +09:00
coh901318_lli.c dmaengine: Use sg_dma_address instead of sg_phys 2012-05-11 12:04:38 +05:30
coh901318_lli.h dmaengine: move drivers to dma_transfer_direction 2011-10-27 20:53:43 +05:30
coh901318.c dma: coh901318: use devm allocation 2012-06-14 08:42:26 +05:30
dmaengine.c drivers/dma/dmaengine.c: lower the priority of 'failed to get' dma channel message 2012-10-06 03:04:36 +09:00
dmaengine.h dmaengine: consolidate initialization of cookies 2012-03-13 11:37:22 +05:30
dmatest.c dmatest: check for dma mapping error 2012-12-17 17:15:13 -08:00
dw_dmac_regs.h drivers/dma/dw_dmac: make driver's endianness configurable 2012-10-25 14:37:53 -07:00
dw_dmac.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
edma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
ep93xx_dma.c Sound updates for 3.7-rc1 2012-10-09 07:07:14 +09:00
fsldma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
fsldma.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
imx-dma.c Merge branch 'arm-next' of git://git.xilinx.com/linux-xlnx into next/cleanup 2012-11-06 07:51:06 -08:00
imx-sdma.c dma: imx-sdma: remove unneeded mach/hardware.h inclusion 2012-10-15 10:03:13 +08:00
intel_mid_dma_regs.h dma: fix comments 2012-09-01 08:57:12 -07:00
intel_mid_dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
iop-adma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
iovlock.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
Kconfig drivers/dma/dw_dmac: make driver's endianness configurable 2012-10-25 14:37:53 -07:00
Makefile dmaengine: mmp-pdma support 2012-09-14 08:14:07 +05:30
mmp_pdma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
mmp_tdma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
mpc512x_dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
mv_xor.c ARM: arm-soc: Updates for Marvell mvebu/kirkwood 2012-12-14 14:54:26 -08:00
mv_xor.h dma: mv_xor: clear the window override control registers 2012-11-22 18:16:37 +01:00
mxs-dma.c Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-10-10 11:10:41 +09:00
omap-dma.c ARM: OMAP: Move plat-omap/dma-omap.h to include/linux/omap-dma.h 2012-11-30 08:41:50 -08:00
pch_dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
pl330.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
sa11x0-dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
sirf-dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
ste_dma40_ll.c dmaengine: ste_dma40: minor cosmetic fixes 2013-01-14 10:51:01 +01:00
ste_dma40_ll.h dmaengine: ste_dma40: support more than 128 event lines 2013-01-14 10:50:48 +01:00
ste_dma40.c dmaengine: ste_dma40: add software lli support 2013-01-14 10:51:08 +01:00
tegra20-apb-dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
timb_dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
TODO dmaengine: remove ste_dma40 from issue_pending TODO 2011-07-14 04:02:08 +05:30
txx9dmac.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
txx9dmac.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
virt-dma.c dmaengine: virt-dma: add support for cyclic DMA periodic callbacks 2012-07-01 14:15:23 +01:00
virt-dma.h dmaengine: virt-dma: add support for cyclic DMA periodic callbacks 2012-07-01 14:15:23 +01:00