12 Feb, 2014
1 commit
-
Currently acpi_dma_request_slave_chan_by_index() and
acpi_dma_request_slave_chan_by_name() return only requested channel or NULL.
This patch converts them to return appropriate error code instead of NULL in
case of unsuccessfull request.Signed-off-by: Andy Shevchenko
Acked-by: Mika Westerberg
Signed-off-by: Vinod Koul
24 Jan, 2014
1 commit
-
Pull ARM SoC cleanups from Olof Johansson:
"This is the branch where we usually queue up cleanup efforts, moving
drivers out of the architecture directory, header file restructuring,
etc. Sometimes they tangle with new development so it's hard to keep
it strictly to cleanups.Some of the things included in this branch are:
* Atmel SAMA5 conversion to common clock
* Reset framework conversion for tegra platforms
- Some of this depends on tegra clock driver reworks that are shared
with Mike Turquette's clk tree.
* Tegra DMA refactoring, which are shared branches with the DMA tree.
* Removal of some header files on exynos to prepare for
multiplatform"* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (169 commits)
ARM: mvebu: move Armada 370/XP specific definitions to armada-370-xp.h
ARM: mvebu: remove prototypes of non-existing functions from common.h
ARM: mvebu: move ARMADA_XP_MAX_CPUS to armada-370-xp.h
serial: sh-sci: Rework baud rate calculation
serial: sh-sci: Compute overrun_bit without using baud rate algo
serial: sh-sci: Remove unused GPIO request code
serial: sh-sci: Move overrun_bit and error_mask fields out of pdata
serial: sh-sci: Support resources passed through platform resources
serial: sh-sci: Don't check IRQ in verify port operation
serial: sh-sci: Set the UPF_FIXED_PORT flag
serial: sh-sci: Remove duplicate interrupt check in verify port op
serial: sh-sci: Simplify baud rate calculation algorithms
serial: sh-sci: Remove baud rate calculation algorithm 5
serial: sh-sci: Sort headers alphabetically
ARM: EXYNOS: Kill exynos_pm_late_initcall()
ARM: EXYNOS: Consolidate selection of PM_GENERIC_DOMAINS for Exynos4
ARM: at91: switch Calao QIL-A9260 board to DT
clk: at91: fix pmc_clk_ids data type attriubte
PM / devfreq: use inclusion instead of
ARM: EXYNOS: remove for exynos
...
02 Jan, 2014
1 commit
27 Dec, 2013
1 commit
-
Merging in external dependencies for the Tegra DMA and reset controller
refactoring from external trees.Per Stephen Warren, the stability of these branches have been negotiated
with the relevant parties (Vinod/Mark/Mike)* depends/asoc-dma:
ASoC: dmaengine: fix deferred probe detection
ASoC: dmaengine: support deferred probe for DMA channels
dma: add channel request API that supports deferred probe
ASoC: dmaengine: add custom DMA config to snd_dmaengine_pcm_config
ASoC: don't leak on error in snd_dmaengine_pcm_register
ASoC: restructure dmaengine_pcm_request_chan_of()
ASoC: generic-dmaengine-pcm: Set BATCH flag when residue reporting is not supported
ASoC: Add resource managed snd_dmaengine_pcm_register()* depends/dma-of:
dma: add dma_get_any_slave_channel(), for use in of_xlate()* depends/tegra-clk: (42 commits)
clk: tegra: fix __clk_lookup() return value checks
clk: tegra: Do not print errors for clk_round_rate()
clk: tegra: Initialize DSI low-power clocks
clk: tegra: add FUSE clock device
clk: tegra: Properly setup PWM clock on Tegra30
clk: tegra: Initialize secondary gr3d clock on Tegra30
clk: tegra114: Initialize clocks needed for HDMI
clk: tegra124: add suspend/resume function for tegra_cpu_car_ops
clk: tegra124: add wait_for_reset and disable_clock for tegra_cpu_car_ops
clk: tegra124: Add support for Tegra124 clocks
clk: tegra124: Add new peripheral clocks
clk: tegra124: Add common clk IDs to clk-id.h
clk: tegra: add TEGRA_PERIPH_NO_GATE
clk: tegra: add locking to periph clks
clk: tegra: Add periph regs bank X
clk: tegra: Add support for PLLSS
clk: tegra: move tegra20 to common infra
clk: tegra: move tegra30 to common infra
clk: tegra: introduce common gen4 super clock
clk: tegra: move PMC, fixed clocks to common files
...Signed-off-by: Olof Johansson
13 Dec, 2013
2 commits
-
BUG: sleeping function called from invalid context at mm/mempool.c:203
in_atomic(): 1, irqs_disabled(): 0, pid: 43502, name: linbug
no locks held by linbug/43502.
CPU: 7 PID: 43502 Comm: linbug Not tainted 3.13.0-rc1+ #15
Hardware name:
0000000000000010 ffff88005ebd1878 ffffffff8172d512 ffff8801752bc1c0
ffff8801752bc1c0 ffff88005ebd1898 ffffffff8109d1f6 ffff88005f9a3c58
ffff880177f0f080 ffff88005ebd1918 ffffffff81161f43 ffff88005ebd18f8
Call Trace:
[] dump_stack+0x4e/0x68
[] __might_sleep+0xe6/0x120
[] mempool_alloc+0x93/0x170
[] ? mark_held_locks+0x74/0x140
[] ? follow_page_mask+0x556/0x600
[] dmaengine_get_unmap_data+0x2e/0x60
[] dma_async_memcpy_pg_to_pg+0x41/0x1c0
[] dma_async_memcpy_buf_to_pg+0x50/0x60
[] dma_memcpy_to_iovec+0xfc/0x190
[] dma_skb_copy_datagram_iovec+0x6f/0x2b0Signed-off-by: Dan Williams
-
The higher order mempools support raid operations, and we want to
disable them when raid support is not enabled. Making them conditional
on ASYNC_TX_DMA is not sufficient as other users (specifically dmatest)
will also issue raid operations. Make raid drivers explicitly request
that the core carry the higher order pools.Reported-by: Ezequiel Garcia
Tested-by: Ezequiel Garcia
Signed-off-by: Dan Williams
10 Dec, 2013
2 commits
-
mmp_pdma.c implements a custom of_xlate() function that is 95% identical
to what Tegra will need. Create a function to implement the common part,
so everyone doesn't just cut/paste the implementation.Cc: Dan Williams
Cc: Vinod Koul
Cc: Lars-Peter Clausen
Cc: dmaengine@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Stephen Warren
Signed-off-by: Vinod Koul -
dma_request_slave_channel() simply returns NULL whenever DMA channel
lookup fails. Lookup could fail for two distinct reasons:a) No DMA specification exists for the channel name.
This includes situations where no DMA specifications exist at all, or
other general lookup problems.b) A DMA specification does exist, yet the driver for that channel is not
yet registered.Case (b) should trigger deferred probe in client drivers. However, since
they have no way to differentiate the two situations, it cannot.Implement new function dma_request_slave_channel_reason(), which performs
identically to dma_request_slave_channel(), except that it returns an
error-pointer rather than NULL, which allows callers to detect when
deferred probe should occur.Eventually, all drivers should be converted to this new API, the old API
removed, and the new API renamed to the more desirable name. This patch
doesn't convert the existing API and all drivers in one go, since some
drivers call dma_request_slave_channel() then dma_request_channel() if
that fails. That would require either modifying dma_request_channel() in
the same way, or adding extra error-handling code to all affected
drivers, and there are close to 100 drivers using the other API, rather
than just the 15-20 or so that use dma_request_slave_channel(), which
might be tenable in a single patch.acpi_dma_request_slave_chan_by_name() doesn't currently implement
deferred probe. It should, but this will be addressed later.Acked-by: Dan Williams
Signed-off-by: Stephen Warren
Signed-off-by: Vinod Koul
16 Nov, 2013
1 commit
-
Pull dmaengine changes from Dan
1/ Bartlomiej and Dan finalized a rework of the dma address unmap
implementation.2/ In the course of testing 1/ a collection of enhancements to dmatest
fell out. Notably basic performance statistics, and fixed / enhanced
test control through new module parameters 'run', 'wait', 'noverify',
and 'verbose'. Thanks to Andriy and Linus for their review.3/ Testing the raid related corner cases of 1/ triggered bugs in the
recently added 16-source operation support in the ioatdma driver.4/ Some minor fixes / cleanups to mv_xor and ioatdma.
Conflicts:
drivers/dma/dmatest.cSigned-off-by: Vinod Koul
15 Nov, 2013
3 commits
-
Remove no longer needed DMA unmap flags:
- DMA_COMPL_SKIP_SRC_UNMAP
- DMA_COMPL_SKIP_DEST_UNMAP
- DMA_COMPL_SRC_UNMAP_SINGLE
- DMA_COMPL_DEST_UNMAP_SINGLECc: Vinod Koul
Cc: Tomasz Figa
Cc: Dave Jiang
Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Kyungmin Park
Acked-by: Jon Mason
Acked-by: Mark Brown
[djbw: clean up straggling skip unmap flags in ntb]
Signed-off-by: Dan Williams -
Use the generic unmap object to unmap dma buffers.
Cc: Vinod Koul
Cc: Tomasz Figa
Cc: Dave Jiang
Reported-by: Bartlomiej Zolnierkiewicz
[bzolnier: keep temporary dma_dest array in do_async_gen_syndrome()]
Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Kyungmin Park
Signed-off-by: Dan Williams -
Use the generic unmap object to unmap dma buffers.
Cc: Vinod Koul
Cc: Tomasz Figa
Cc: Dave Jiang
Reported-by: Bartlomiej Zolnierkiewicz
[bzolnier: add missing unmap->len initialization]
[bzolnier: fix whitespace damage]
Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Kyungmin Park
[djbw: add DMA_ENGINE=n support]
Signed-off-by: Dan Williams
14 Nov, 2013
2 commits
-
Hang a common 'unmap' object off of dma descriptors for the purpose of
providing a unified unmapping interface. The lifetime of a mapping may
span multiple descriptors, so these unmap objects are reference counted
by related descriptor.Cc: Vinod Koul
Cc: Tomasz Figa
Cc: Dave Jiang
[bzolnier: fix IS_ENABLED() check]
[bzolnier: fix release ordering in dmaengine_destroy_unmap_pool()]
[bzolnier: fix check for success in dmaengine_init_unmap_pool()]
[bzolnier: use mempool_free() instead of kmem_cache_free()]
[bzolnier: add missing unmap->len initializations]
[bzolnier: add __init tag to dmaengine_init_unmap_pool()]
Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Kyungmin Park
[djbw: move DMAENGINE=n support to this patch for async_tx]
Signed-off-by: Dan Williams -
Copying from page to page (dma_async_memcpy_pg_to_pg) is the superset,
make the other two apis use that one in preparation for providing a
common dma unmap implementation. The common implementation just wants
to assume all buffers are mapped with dma_map_page().Cc: Vinod Koul
Cc: Tomasz Figa
Cc: Dave Jiang
Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Kyungmin Park
Signed-off-by: Dan Williams
25 Oct, 2013
1 commit
-
the DMA_SUCCESS is a misnomer as dmaengine indicates the transfer is complete and
gives no guarantee of the transfer success. Hence we should use DMA_COMPLTE
instead of DMA_SUCCESSAcked-by: Dan Williams
Acked-by: Linus Walleij
Signed-off-by: Vinod Koul
11 Sep, 2013
1 commit
-
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
...
10 Sep, 2013
1 commit
-
Pull dmaengine update from Dan Williams:
"Collection of random updates to the core and some end-driver fixups
for ioatdma and mv_xor:
- NUMA aware channel allocation
- Cleanup dmatest debugfs interface
- ioat: make raid-support Atom only
- mv_xor: big endianAside from the top three commits these have all had some soak time in
-next. The top commit fixes a recent build breakage.It has been a long while since my last pull request, hopefully it does
not show. Thanks to Vinod for keeping an eye on drivers/dma/ this
past year"* tag 'dmaengine-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine:
dmaengine: dma_sync_wait and dma_find_channel undefined
MAINTAINERS: update email for Dan Williams
dma: mv_xor: Fix incorrect error path
ioatdma: silence GCC warnings
dmaengine: make dma_channel_rebalance() NUMA aware
dmaengine: make dma_submit_error() return an error code
ioatdma: disable RAID on non-Atom platforms and reenable unaligned copies
mv_xor: support big endian systems using descriptor swap feature
mv_xor: use {readl, writel}_relaxed instead of __raw_{readl, writel}
dmatest: print message on debug level in case of no error
dmatest: remove IS_ERR_OR_NULL checks of debugfs calls
dmatest: make module parameters writable
02 Sep, 2013
2 commits
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Trivial fix for function name mismatches I stumbled over.
Signed-off-by: Daniel Mack
Signed-off-by: Vinod Koul
23 Aug, 2013
1 commit
-
dma_channel_rebalance() currently distributes channels by processor ID.
These IDs often change with the BIOS, and the order isn't related to
the DMA channel list (related to PCI bus ids).
* On my SuperMicro dual E5 machine, first socket has processor IDs [0-7]
(and [16-23] for hyperthreads), second socket has [8-15]+[24-31]
=> channels are properly allocated to local CPUs.
* On Dells R720 with same processors, first socket has even processor IDs,
second socket has odd numbers
=> half the processors get channels on the remote socket, causing
cross-NUMA traffic and lower DMA performance.Change nth_chan() to return the channel with min table_count and in the
NUMA node of the given CPU, if any. If none, the (non-local) channel with
min table_count is returned. nth_chan() is therefore renamed into min_chan()
since we don't iterate until the nth channel anymore. In practice, the
behavior is the same because first channels are taken first and are then
ignored because they got an additional reference.The new code has a slightly higher complexity since we always scan the
entire list of channels for finding the minimal table_count (instead
of stopping after N chans), and because we check whether the CPU is in the
DMA device locality mask. Overall we still have time complexity =
number of chans x number of processors. This rebalance is rarely used,
so this won't hurt.On the above SuperMicro machine, channels are still allocated the same.
On the Dells, there are no locality issue anymore (MEMCPY channel X goes
to processor X and to its hyperthread sibling).Signed-off-by: Brice Goglin
Signed-off-by: Dan Williams
19 Aug, 2013
1 commit
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commit 7bb587f4 "dmaengine: add interface of dma_get_slave_channel" introduced
the above error so fix itReported-by: Dan Carpenter
Suggested-by: Zhangfei Gao
Signed-off-by: Vinod Koul
13 Aug, 2013
1 commit
-
Suggested by Arnd, add dma_get_slave_channel interface
Dma host driver could get specific channel specificied by request line, rather than filter.host example:
static struct dma_chan *xx_of_dma_simple_xlate(struct of_phandle_args *dma_spec,
struct of_dma *ofdma)
{
struct xx_dma_dev *d = ofdma->of_dma_data;
unsigned int request = dma_spec->args[0];if (request > d->dma_requests)
return NULL;return dma_get_slave_channel(&(d->chans[request].vc.chan));
}probe:
of_dma_controller_register((&op->dev)->of_node, xx_of_dma_simple_xlate, d);Signed-off-by: Zhangfei Gao
Acked-by: Arnd Bergmann
Signed-off-by: Vinod Koul
26 Jul, 2013
1 commit
-
The dev_attrs field of struct class is going away soon, dev_groups
should be used instead. This converts the dma dma_devclass code to use
the correct field.Cc: Dan Williams
Acked-by: Vinod Koul
Signed-off-by: Greg Kroah-Hartman
04 Jul, 2013
1 commit
-
There have never been any real users of MEMSET operations since they
have been introduced in January 2007 by commit 7405f74badf4 ("dmaengine:
refactor dmaengine around dma_async_tx_descriptor"). Therefore remove
support for them for now, it can be always brought back when needed.[sebastian.hesselbarth@gmail.com: fix drivers/dma/mv_xor]
Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Kyungmin Park
Signed-off-by: Sebastian Hesselbarth
Cc: Vinod Koul
Acked-by: Dan Williams
Cc: Tomasz Figa
Cc: Herbert Xu
Cc: Olof Johansson
Cc: Kevin Hilman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
03 May, 2013
1 commit
-
Conflicts:
include/linux/dmaengine.hSigned-off-by: Vinod Koul
16 Apr, 2013
1 commit
-
The slave device could be enumerated by ACPI. In that case the
dma_request_slave_channel should use the acpi_dma_request_slave_channel()
helper.Signed-off-by: Andy Shevchenko
Reviewed-by: Mika Westerberg
Acked-by: Rafael J. Wysocki
Signed-off-by: Vinod Koul
15 Apr, 2013
2 commits
-
No DMA of-function alters the name, so this patch changes the name arguments
to be constant. Most drivers will probably request DMA channels using a
constant name.Signed-off-by: Markus Pargmann
Signed-off-by: Vinod Koul -
The 'mask' parameter is not modified in __dma_request_channel and really
shouldn't be. Make this explicit by making the parameter const.Signed-off-by: Lars-Peter Clausen
Signed-off-by: Vinod Koul
28 Feb, 2013
1 commit
-
Convert to the much saner new idr interface.
Signed-off-by: Tejun Heo
Cc: Dan Williams
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
08 Jan, 2013
1 commit
-
Removal of the busy-loop from dma_sync_wait() is not a trivial
task so just add cpu_relax() to the loop for now.Cc: Vinod Koul
Cc: Tomasz Figa
Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Kyungmin Park
Signed-off-by: Dan Williams
07 Jan, 2013
1 commit
-
Currently slave DMA channels are requested by calling dma_request_channel()
and requires DMA clients to pass various filter parameters to obtain the
appropriate channel.With device-tree being used by architectures such as arm and the addition of
device-tree helper functions to extract the relevant DMA client information
from device-tree, add a new function to request a slave DMA channel using
device-tree. This function is currently a simple wrapper that calls the
device-tree of_dma_request_slave_channel() function.Cc: Nicolas Ferre
Cc: Benoit Cousson
Cc: Stephen Warren
Cc: Grant Likely
Cc: Russell King
Cc: Rob Herring
Cc: Arnd Bergmann
Cc: Vinod Koul
Cc: Dan WilliamsAcked-by: Arnd Bergmann
Signed-off-by: Jon Hunter
Reviewed-by: Stephen Warren
Acked-by: Rob Herring
Signed-off-by: Vinod Koul
06 Oct, 2012
1 commit
-
Do the same as commit a03a202e95fd ("dmaengine: failure to get a
specific DMA channel is not critical") to get rid of the following
messages during kernel boot:dmaengine_get: failed to get dma1chan0: (-22)
dmaengine_get: failed to get dma1chan1: (-22)
dmaengine_get: failed to get dma1chan2: (-22)
dmaengine_get: failed to get dma1chan3: (-22)
..Signed-off-by: Fabio Estevam
Cc: Vinod Koul
Cc: Dan Williams
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
20 Jul, 2012
1 commit
-
Use a more current logging style.
Add pr_fmt to prefix dmaengine: to messages.
Convert printk(KERN_ERR to pr_err(.
Convert embedded function name use to "%s: ", __func__
Align arguments.Original-patch-by: Andy Shevchenko
Signed-off-by: Joe Perches
Signed-off-by: Vinod Koul
11 Apr, 2012
1 commit
-
Pull dmaengine fixes from Dan Williams:
1/ regression fix for Xen as it now trips over a broken assumption
about the dma address size on 32-bit builds2/ new quirk for netdma to ignore dma channels that cannot meet
netdma alignment requirements3/ fixes for two long standing issues in ioatdma (ring size overflow)
and iop-adma (potential stack corruption)* tag 'dmaengine-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine:
netdma: adding alignment check for NETDMA ops
ioatdma: DMA copy alignment needed to address IOAT DMA silicon errata
ioat: ring size variables need to be 32bit to avoid overflow
iop-adma: Corrected array overflow in RAID6 Xscale(R) test.
ioat: fix size of 'completion' for Xen
06 Apr, 2012
1 commit
-
This is the fallout from adding memcpy alignment workaround for certain
IOATDMA hardware. NetDMA will only use DMA engine that can handle byte align
ops.Acked-by: David S. Miller
Signed-off-by: Dave Jiang
Signed-off-by: Dan Williams
06 Mar, 2012
1 commit
-
The message "dmaengine: failed to get" can come from two possible locations within dmaengine.c.
In order to distinguish between them, replace "dmaengine" with __func__ string so that the
source function of the error message can be easily identified.Signed-off-by: Fabio Estevam
Signed-off-by: Vinod Koul
18 Nov, 2011
1 commit
-
Define a new api that could be used for doing fancy data transfers
like interleaved to contiguous copy and vice-versa.
Traditional SG_list based transfers tend to be very inefficient in
such cases as where the interleave and chunk are only a few bytes,
which call for a very condensed api to convey pattern of the transfer.
This api supports all 4 variants of scatter-gather and contiguous transfer.Of course, neither can this api help transfers that don't lend to DMA by
nature, i.e, scattered tiny read/writes with no periodic pattern.Also since now we support SLAVE channels that might not provide
device_prep_slave_sg callback but device_prep_interleaved_dma,
remove the BUG_ON check.Signed-off-by: Jassi Brar
Acked-by: Barry Song
[renamed dmaxfer_template to dma_interleaved_template
did fixup after the enum dma_transfer_merge]
Signed-off-by: Vinod Koul
05 Aug, 2011
1 commit
-
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
dmaengine: use DEFINE_IDR for static initialization
ioat: fix xor_idx_to_desc
Avoid section type conflict in dma/ioat/dma_v3.c
ioat: Adding PCI IDs for IOAT devices on SandyBridge platforms
04 Aug, 2011
1 commit
-
We could use DEFINE_IDR for statically allocated idr
that allow us to save a few lines of code.And also remove unneeded mutex_init() for dma_list_mutex, as
dma_list_mutex is initialized automatically by DEFINE_MUTEX().Signed-off-by: Axel Lin
Signed-off-by: Dan Williams
02 Aug, 2011
1 commit
-
* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (37 commits)
Improve slave/cyclic DMA engine documentation
dmaengine: pl08x: handle the rest of enums in pl08x_width
DMA: PL08x: cleanup selection of burst size
DMA: PL08x: avoid recalculating cctl at each prepare
DMA: PL08x: cleanup selection of buswidth
DMA: PL08x: constify plchan->cd and plat->slave_channels
DMA: PL08x: separately store source/destination cctl
DMA: PL08x: separately store source/destination slave address
DMA: PL08x: clean up LLI debugging
DMA: PL08x: select LLI bus only once per LLI setup
DMA: PL08x: remove unused constants
ARM: mxs-dma: reset after disable channel
dma: intel_mid_dma: remove redundant pci_set_drvdata calls
dma: mxs-dma: fix unterminated platform_device_id table
dmaengine: pl330: make platform data optional
dmaengine: imx-sdma: return proper error if kzalloc fails
pch_dma: Fix CTL register access issue
dmaengine: mxs-dma: skip request_irq for NO_IRQ
dmaengine/coh901318: fix slave submission semantics
dmaengine/ste_dma40: allow memory buswidth/burst to be configured
...Fix trivial whitespace conflict in drivers/dma/mv_xor.c