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702e94d66b
linux/drivers/dma
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Markus Pargmann 702e94d66b dma: mxs-dma: Fix channel reset hardware bug 
This is no official errata, but I noticed that the channel reset may
stop working if the DMA state engine is in the READ_FLUSH state.

This patch uses the channel debug1 register to wait for the DMA
statemachine to leave the READ_FLUSH state. After that we can continue
to reset the channel.

Tested on i.MX28.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-11-13 15:38:30 +05:30
..
bestcomm Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-02-23 17:09:55 -08:00
dw dmaengine: dw: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:00 +05:30
ioat dmaengine: ioat: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:05 +05:30
ipu dmaengine: ipu: fix warnings from 64-bit dma_addr_t printouts 2013-11-13 14:10:48 +05:30
ppc4xx dmaengine: ppc4xx: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:12 +05:30
sh Merge branch 'dma_complete' into next 2013-10-30 15:42:19 +05:30
acpi-dma.c acpi-dma: remove ugly conversion 2013-08-25 16:43:45 +05:30
amba-pl08x.c dmaengine: amba-pl08x: use DMA_COMPLETE for dma completion status 2013-10-25 11:15:54 +05:30
at_hdmac_regs.h DMA: AT91: Get residual bytes in dma buffer 2013-07-05 11:40:31 +05:30
at_hdmac.c dmaengine: at_hdma: use DMA_COMPLETE for dma completion status 2013-10-25 11:15:55 +05:30
coh901318_lli.c Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-02-26 09:24:48 -08:00
coh901318.c dmaengine: coh901318: use DMA_COMPLETE for dma completion status 2013-10-25 11:15:56 +05:30
coh901318.h dma: coh901318: merge header files 2013-01-07 17:36:37 +01:00
cppi41.c dma: cppi41: return code > 0 of pm_runtime_get_sync() is not an error 2013-11-12 14:28:25 +05:30
dma-jz4740.c dmaengine: jz4740: use DMA_COMPLETE for dma completion status 2013-10-25 11:15:58 +05:30
dmaengine.c dmaengine: use DMA_COMPLETE for dma completion status 2013-10-25 11:15:38 +05:30
dmaengine.h
dmatest.c dmaengine: dmatest: use DMA_COMPLETE for dma completion status 2013-10-25 11:15:59 +05:30
edma.c dmaengine: edma: remove duplicate kfree 2013-11-13 14:10:20 +05:30
ep93xx_dma.c ep93xx_dma: remove useless use of lock 2013-08-05 09:32:24 +05:30
fsldma.c DMA: Freescale: update driver to support 8-channel DMA engine 2013-11-13 14:26:27 +05:30
fsldma.h DMA: Freescale: update driver to support 8-channel DMA engine 2013-11-13 14:26:27 +05:30
imx-dma.c Merge branch 'for-linus' into next 2013-10-31 22:36:13 +05:30
imx-sdma.c dma: imx-sdma: Fix warnings for LPAE builds 2013-11-13 14:10:48 +05:30
intel_mid_dma_regs.h dma: fix comments 2012-09-01 08:57:12 -07:00
intel_mid_dma.c dmaengine: intel_mid_dma: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:04 +05:30
iop-adma.c dmaengine: iop: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:06 +05:30
iovlock.c
k3dma.c dmaengine: k3dma: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:07 +05:30
Kconfig DMA: Freescale: update driver to support 8-channel DMA engine 2013-11-13 14:26:27 +05:30
Makefile Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2013-09-10 13:37:36 -07:00
mmp_pdma.c dma: misc: remove deprecated IRQF_DISABLED 2013-10-13 20:21:35 +05:30
mmp_tdma.c dmaengine: mmp_tdma: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:08 +05:30
mpc512x_dma.c mpc512x_dma: remove useless use of lock 2013-08-05 09:32:25 +05:30
mv_xor.c dmaengine: mv_xor: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:09 +05:30
mv_xor.h mv_xor: support big endian systems using descriptor swap feature 2013-08-22 22:57:37 -07:00
mxs-dma.c dma: mxs-dma: Fix channel reset hardware bug 2013-11-13 15:38:30 +05:30
of-dma.c dma: of: make error message more meaningful by adding the node name 2013-08-19 14:45:05 +05:30
omap-dma.c dmaengine: omap: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:11 +05:30
pch_dma.c pch_dma: Add MODULE_DEVICE_TABLE 2013-09-02 11:59:58 +05:30
pl330.c dma: pl330: Remove unnecessary amba_set_drvdata() 2013-10-31 19:54:10 +05:30
sa11x0-dma.c dmaengine: sa11x0: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:13 +05:30
sirf-dma.c dmaengine: sirf: add PM entries for sleep and runtime 2013-08-13 17:01:01 +05:30
ste_dma40_ll.c dmaengine: ste_dma40_ll: Replace meaningless register set with comment 2013-06-04 11:12:10 +02:00
ste_dma40_ll.h dmaengine: ste_dma40: Remove unnecessary call to d40_phy_cfg() 2013-05-23 21:13:19 +02:00
ste_dma40.c dmaengine: ste: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:15 +05:30
tegra20-apb-dma.c dmaengine: tegra: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:16 +05:30
timb_dma.c dma: use dev_get_platdata() 2013-08-13 16:56:41 +05:30
TODO
txx9dmac.c dmaengine: txx9: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:17 +05:30
txx9dmac.h
virt-dma.c
virt-dma.h