Граф коммитов

1986 Коммитов

Автор SHA1 Сообщение Дата
Linus Torvalds 77c32bbbe0 Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine updates from Vinod Koul:
 - new Xilixn VDMA driver from Srikanth
 - bunch of updates for edma driver by Thomas, Joel and Peter
 - fixes and updates on dw, ste_dma, freescale, mpc512x, sudmac etc

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (45 commits)
  dmaengine: sh: don't use dynamic static allocation
  dmaengine: sh: fix print specifier warnings
  dmaengine: sh: make shdma_prep_dma_cyclic static
  dmaengine: Kconfig: Update MXS_DMA help text to include MX6Q/MX6DL
  of: dma: Grammar s/requests/request/, s/used required/required/
  dmaengine: shdma: Enable driver compilation with COMPILE_TEST
  dmaengine: rcar-hpbdma: Include linux/err.h
  dmaengine: sudmac: Include linux/err.h
  dmaengine: sudmac: Keep #include sorted alphabetically
  dmaengine: shdmac: Include linux/err.h
  dmaengine: shdmac: Keep #include sorted alphabetically
  dmaengine: s3c24xx-dma: Add cyclic transfer support
  dmaengine: s3c24xx-dma: Process whole SG chain
  dmaengine: imx: correct sdmac->status for cyclic dma tx
  dmaengine: pch: fix compilation for alpha target
  dmaengine: dw: check return code of dma_async_device_register()
  dmaengine: dw: fix regression in dw_probe() function
  dmaengine: dw: enable clock before access
  dma: pch_dma: Fix Kconfig dependencies
  dmaengine: mpc512x: add support for peripheral transfers
  ...
2014-06-10 10:28:45 -07:00
Vinod Koul 06822788fa Merge branch 'topic/xilinx' into for-linus 2014-06-09 21:56:29 +05:30
Vinod Koul 3c814be971 Merge branch 'topic/dw' into for-linus 2014-06-09 21:55:40 +05:30
Vinod Koul 877d842507 dmaengine: sh: don't use dynamic static allocation
dynamic stack allocation in kernel is considered bad as kernel stack is low and
we get warns on few archs as reported by kbuild test robot

>> drivers/dma/sh/shdma-base.c:671:32: sparse: Variable length array is used.
>> drivers/dma/sh/shdma-base.c:701:1: warning: 'shdma_prep_dma_cyclic' uses
>> dynamic stack allocation [enabled by default]

Fix this by making a static array of 32 which should be sufficient for
shdma_prep_dma_cyclic which only user in kernel is audio and 32 periods for
audio seems quite sufficient atm

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-03 11:35:33 +05:30
Vinod Koul 9d9f71a804 dmaengine: sh: fix print specifier warnings
As documented in Documentation/printk-formats.txt we should use %zu/%zx
specifiers for size_t type variables for the code to compile on different
architectures. This is uncovered as COMPILE_TEST has been enabled recently for
this driver

   drivers/dma/sh/shdma-base.c: In function 'shdma_prep_dma_cyclic':
>> drivers/dma/sh/shdma-base.c:683:4: warning: format '%d' expects argument of
>> type 'int', but argument 4 has type 'size_t' [-Wformat=]
       __func__, buf_len, period_len, slave_id);
>> drivers/dma/sh/shdma-base.c:683:4: warning: format '%d' expects argument of
>> type 'int', but argument 5 has type 'size_t' [-Wformat=]

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-03 11:35:24 +05:30
Vinod Koul a687654307 dmaengine: sh: make shdma_prep_dma_cyclic static
kbuild test robot reports that shdma_prep_dma_cyclic should be static, since
symbol is not declared, quick check revails that is the case

>> drivers/dma/sh/shdma-base.c:660:32: sparse: symbol 'shdma_prep_dma_cyclic'
>> was not declared. Should it be static?

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-03 11:34:47 +05:30
Linus Torvalds a727eaf64f ARM: SoC driver changes
SoC-near driver changes that we're merging through our tree. Mostly
 because they depend on other changes we have staged, but in some cases
 because the driver maintainers preferred that we did it this way.
 
 This contains a largeish cleanup series of the omap_l3_noc bus driver,
 cpuidle rework for Exynos, some reset driver conversions and a long
 branch of TI EDMA fixes and cleanups, with more to come next release.
 
 The TI EDMA cleanups is a shared branch with the dmaengine tree, with
 a handful of Davinci-specific fixes on top.
 
 After discussion at last year's KS (and some more on the mailing lists),
 we are here adding a drivers/soc directory. The purpose of this is
 to keep per-vendor shared code that's needed by different drivers but
 that doesn't fit into the MFD (nor drivers/platform) model. We expect
 to keep merging contents for this hierarchy through arm-soc so we can
 keep an eye on what the vendors keep adding here and not making it a
 free-for-all to shove in crazy stuff.
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Merge tag 'drivers-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into next

Pull ARM SoC driver changes from Olof Johansson:
 "SoC-near driver changes that we're merging through our tree.  Mostly
  because they depend on other changes we have staged, but in some cases
  because the driver maintainers preferred that we did it this way.

  This contains a largeish cleanup series of the omap_l3_noc bus driver,
  cpuidle rework for Exynos, some reset driver conversions and a long
  branch of TI EDMA fixes and cleanups, with more to come next release.

  The TI EDMA cleanups is a shared branch with the dmaengine tree, with
  a handful of Davinci-specific fixes on top.

  After discussion at last year's KS (and some more on the mailing
  lists), we are here adding a drivers/soc directory.  The purpose of
  this is to keep per-vendor shared code that's needed by different
  drivers but that doesn't fit into the MFD (nor drivers/platform)
  model.  We expect to keep merging contents for this hierarchy through
  arm-soc so we can keep an eye on what the vendors keep adding here and
  not making it a free-for-all to shove in crazy stuff"

* tag 'drivers-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (101 commits)
  cpufreq: exynos: Fix driver compilation with ARCH_MULTIPLATFORM
  tty: serial: msm: Remove direct access to GSBI
  power: reset: keystone-reset: introduce keystone reset driver
  Documentation: dt: add bindings for keystone pll control controller
  Documentation: dt: add bindings for keystone reset driver
  soc: qcom: fix of_device_id table
  ARM: EXYNOS: Fix kernel panic when unplugging CPU1 on exynos
  ARM: EXYNOS: Move the driver to drivers/cpuidle directory
  ARM: EXYNOS: Cleanup all unneeded headers from cpuidle.c
  ARM: EXYNOS: Pass the AFTR callback to the platform_data
  ARM: EXYNOS: Move S5P_CHECK_SLEEP into pm.c
  ARM: EXYNOS: Move the power sequence call in the cpu_pm notifier
  ARM: EXYNOS: Move the AFTR state function into pm.c
  ARM: EXYNOS: Encapsulate the AFTR code into a function
  ARM: EXYNOS: Disable cpuidle for exynos5440
  ARM: EXYNOS: Encapsulate boot vector code into a function for cpuidle
  ARM: EXYNOS: Pass wakeup mask parameter to function for cpuidle
  ARM: EXYNOS: Remove ifdef for scu_enable in pm
  ARM: EXYNOS: Move scu_enable in the cpu_pm notifier
  ARM: EXYNOS: Use the cpu_pm notifier for pm
  ...
2014-06-02 16:35:49 -07:00
Fabio Estevam 654fa24965 dmaengine: Kconfig: Update MXS_DMA help text to include MX6Q/MX6DL
The APBX-DMA block is also found on MX6Q/MX6DL chips.

Update the help text accordingly.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01 23:16:37 +05:30
Laurent Pinchart ebc6d2d9c8 dmaengine: shdma: Enable driver compilation with COMPILE_TEST
This helps increasing build testing coverage.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01 22:56:31 +05:30
Laurent Pinchart 494ead469e dmaengine: rcar-hpbdma: Include linux/err.h
linux/err.h isn't implicitly included by the current headers on all
platforms, resulting in compilation failures due to implicit
declarations of IS_ERR and PTR_ERR. Fix this by including linux/err.h.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01 22:56:30 +05:30
Laurent Pinchart 830c863987 dmaengine: sudmac: Include linux/err.h
linux/err.h isn't implicitly included by the current headers on all
platforms, resulting in compilation failures due to implicit
declarations of IS_ERR and PTR_ERR. Fix this by including linux/err.h.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01 22:56:30 +05:30
Laurent Pinchart cf5a23b787 dmaengine: sudmac: Keep #include sorted alphabetically
This helps detecting duplicate includes.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01 22:56:30 +05:30
Laurent Pinchart c46b9af26f dmaengine: shdmac: Include linux/err.h
linux/err.h isn't implicitly included by the current headers on all
platforms, resulting in compilation failures due to implicit
declarations of IS_ERR and PTR_ERR. Fix this by including linux/err.h.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01 22:56:30 +05:30
Laurent Pinchart a5cdc1c155 dmaengine: shdmac: Keep #include sorted alphabetically
This helps detecting duplicate includes.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01 22:56:30 +05:30
Vasily Khoruzhick c3e175e52f dmaengine: s3c24xx-dma: Add cyclic transfer support
Many audio interface drivers require support of cyclic transfers to work
correctly, for example Samsung ASoC DMA driver. This patch adds support
for cyclic transfers to the s3c24xx-dma driver

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01 22:22:51 +05:30
Vasily Khoruzhick 6915f45fb9 dmaengine: s3c24xx-dma: Process whole SG chain
Due to redundant 'break' in loop driver processed only first chunk.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01 22:22:50 +05:30
Jiada Wang ffe59b2930 dmaengine: imx: correct sdmac->status for cyclic dma tx
In cyclic dma tx's handler sdma_handle_channel_loop(),
SDMA channel statue is set to either DMA_ERROR or DMA_IN_PROGRESS
based on each period's status. This has the following issues:

1) If one period's status is BD_RROR, then channel status
   will be set to DMA_ERROR, but it will be overwritten to DMA_IN_PROGRESS
   if the following periods are OK.
2) DMA client may call sdma_control(DMA_TERMINATE_ALL) to stop the cyclic dma
   operation, sdma channel status will be set to DMA_ERROR,
   but if after this handler is called, then again the channel status will be overwritten
   to DMA_IN_PROGRESS. Then the following dmaengine_prep_dma_cyclic() will always fail,
   as channel status is DMA_IN_PROGRESS.

As in cyclic dma tx, channel status will be initially set to DMA_IN_PROGRESS,
driver only needs to change it to DMA_ERROR, when something wrong happens
(one period status is wrong, or stoped by client explicitly).

Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01 22:22:26 +05:30
Linus Torvalds c949ddf9eb Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine fixes from Vinod Koul:
 "We have three small fixes.

  First one from Andy reverts the devm_request irq as we need to ensure
  the tasklet is killed after irq is freed, so we need to do free irq in
  our code.  Other two from Arnd are fixing the compilation issue in
  omap and sa11x0 drivers with ARM randconfigs"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: sa11x0: remove broken #ifdef
  dmaengine: omap: hide filter_fn for built-in drivers
  dmaengine: dw: went back to plain {request,free}_irq() calls
2014-05-27 13:57:00 -07:00
Vinod Koul a15783c34f dmaengine: pch: fix compilation for alpha target
commit 4828b493 introduced COMPILE_TEST for this driver and this cause compile
failure on alpha as kzalloc wasnt availble for this arch in included header, so
explictly add slab.h

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-22 18:50:49 +05:30
Andy Shevchenko 1222934e54 dmaengine: dw: check return code of dma_async_device_register()
dma_async_device_register() may return non-zero error code. In such case we
have to follow error path.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-22 15:37:25 +05:30
Andy Shevchenko 8be4f523b4 dmaengine: dw: fix regression in dw_probe() function
The commit dbde5c29 "dw_dmac: use devm_* functions to simplify code" turns
probe function to use devm_* helpers and simultaneously brings a regression.

We have to 1) call clk_disable_unprepare() on error path, and 2) check error
code of clk_enable_prepare(). First part was done in the original code, second
one is an update.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-22 15:37:24 +05:30
Andy Shevchenko d2f78e95e4 dmaengine: dw: enable clock before access
hclk signal is a bus clock. So, it means we have to have it enabled during
access to the DMA controller. This patch makes sure that we enable clock before
access to the device, though it currently works on Intel hardware.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-22 15:37:24 +05:30
Jean Delvare 4828b49369 dma: pch_dma: Fix Kconfig dependencies
The pch_dma driver is for a companion chip to the Intel Atom E600
series processors. These are 32-bit x86 processors so the driver is
only needed on X86_32. Add COMPILE_TEST as an alternative, so that the
driver can still be build-tested elsewhere.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-22 11:48:27 +05:30
Alexander Popov 63da8e0d4f dmaengine: mpc512x: add support for peripheral transfers
Introduce support for slave s/g transfer preparation and the associated
device control callback in the MPC512x DMA controller driver, which adds
support for data transfers between memory and peripheral I/O to the
previously supported mem-to-mem transfers.

Signed-off-by: Alexander Popov <a13xp0p0v88@gmail.com>
[fixed subsytem name]
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-22 10:37:01 +05:30
Xuelin Shi c1f43dd9c2 dmaengine: fix dmaengine_unmap failure
The count which is used to get_unmap_data maybe not the same as the
count computed in dmaengine_unmap which causes to free data in a
wrong pool.

This patch fixes this issue by keeping the map count with unmap_data
structure and use this count to get the pool.

Cc: <stable@vger.kernel.org>
Signed-off-by: Xuelin Shi <xuelin.shi@freescale.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2014-05-21 14:02:37 -07:00
Ezequiel Garcia 5a9a55bf91 dma: mv_xor: Flush descriptors before activating a channel
We need to use writel() instead of writel_relaxed() when starting
a channel, to ensure all the descriptors have been flushed before
the activation.

While at it, remove the unneeded read-modify-write and make the
code simpler.

Cc: <stable@vger.kernel.org>
Signed-off-by: Lior Amsalem <alior@marvell.com>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2014-05-21 14:02:35 -07:00
Arnd Bergmann fbeb91fe8e dmaengine: sa11x0: remove broken #ifdef
The sa11x0_dma_pm_ops unconditionally reference sa11x0_dma_resume
and sa11x0_dma_suspend, which currently breaks if CONFIG_PM_SLEEP
is disabled.

There is probably a better way to remove the reference in this
case, but the safe choice is to have the suspend/resume code always
built in the driver.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: dmaengine@vger.kernel.org
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-21 11:40:49 +05:30
Jingoo Han 7587821d3d dma: remove DEFINE_PCI_DEVICE_TABLE macro
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro
is deprecated.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-21 11:16:18 +05:30
Andy Shevchenko 97977f7576 dmaengine: dw: went back to plain {request,free}_irq() calls
The commit dbde5c29 "dw_dmac: use devm_* functions to simplify code" turns
probe function to use devm_* helpers and simultaneously brings a regression. We
need to ensure irq is disabled, followed by ensuring that don't schedule any
more tasklets and then its safe to use tasklet_kill().

The free_irq() will ensure that the irq is disabled and also wait till all
scheduled interrupts are executed by invoking synchronize_irq(). So we need to
only do tasklet_kill() after invoking free_irq().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: stable@vger.kernel.org # v3.11+
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-07 15:34:45 +05:30
Ulf Hansson 673d377345 dma: ste_dma40: Convert to the late system PM callbacks
Clients may still be active in the early phase of system PM, thus we
need to move the suspend operations to the late system PM phase.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-07 15:32:07 +05:30
Daniel Mack 1b38da2646 dma: mmp_pdma: add support for residue reporting
A channel can accommodate more than one transaction, each consisting of
multiple descriptors, the last of which has the DCMD_ENDIRQEN bit set.

In order to report the channel's residue, we hence have to walk the
list of running descriptors, look for those which match the cookie,
and then try to find the descriptor which defines upper and lower
boundaries that embrace the current transport pointer. Once it is found,
walk forward until we find the descriptor that tells us about the end of
a transaction via a set DCMD_ENDIRQEN bit.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-07 12:33:40 +05:30
Ulf Hansson c906a3ec45 dma: ste_dma40: Fixup system suspend/resume
Make sure to handle register context save/restore when needed from
system PM callbacks.

Previously we solely trusted the device to reside in in-active state
while the system suspend callback were invoked, which is just too
optimistic.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-07 11:50:27 +05:30
Ulf Hansson 123e4ca172 dma: ste_dma40: Convert to PM macros while providing the PM callbacks
Converting to the PM macros makes us simplify and remove some code.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-07 11:50:27 +05:30
Ulf Hansson 2dafca17c8 dma: ste_dma40: Don't require CONFIG_PM_RUNTIME
While probing, don't rely on CONFIG_PM_RUNTIME to be configured.
Instead, let's power up the device and make it fully operational.
Update the runtime PM status to reflect the active state.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-07 11:50:27 +05:30
Ulf Hansson 80245216cc dma: ste_dma40: Maintain spinlock order while handling pause
The runtime PM resume callback needs to be executed while holding the
spinlock, make sure to maintain this for the pause operation as well.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-07 11:50:27 +05:30
Andy Shevchenko c31b6ae1b4 dmaengine: dw: convert to use SET_LATE_SYSTEM_SLEEP_PM_OPS
The commit 4501fe61 "dma: dw: Add suspend and resume handling for PCI mode
DW_DMAC." introduces system power management callbacks. Regarding to commit
f78c4cff "PM / Sleep: Add macro to define common late/early system PM
callbacks" we have nice macro to setup dev_pm_ops structure. This patch
converts a driver to use the macro.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-07 11:44:06 +05:30
Andy Shevchenko 067bd4fdfa dmaengine: dw: move PM to suspend_late / resume_early stages
There is no need to use *_noirq version of suspend and resume PM callbacks. The
suspend_late / resume_early suit better (it was discussed in [1]) and in future
could be used for runtime PM support.

[1] http://www.spinics.net/lists/kernel/msg1650974.html

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-07 11:44:06 +05:30
Alexander Popov baca66f796 dma: mpc512x: fix freeing resources in mpc_dma_probe() and mpc_dma_remove()
Fix mpc_dma_probe() error path and mpc_dma_remove(): manually free IRQs and
dispose IRQ mappings before devm_* takes care of other resources.
Moreover replace devm_request_irq() with request_irq() since there is no need
to use it because the original code always frees IRQ manually with
devm_free_irq(). Replace devm_free_irq() with free_irq() accordingly.

Signed-off-by: Alexander Popov <a13xp0p0v88@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-02 22:36:22 +05:30
Alexander Popov 62057d3375 dma: mpc512x: separate 'compatible' values for MPC512x and MPC8308
MPC512x and MPC8308 have similar DMA controllers, but are independent SoCs.
DMA controller driver should have separate 'compatible' values for these SoCs.

Signed-off-by: Alexander Popov <a13xp0p0v88@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-02 22:36:21 +05:30
Alexander Popov 78a4f0367a dma: mpc512x: reorder mpc8308 specific instructions
Concentrate the specific code for MPC8308 in the 'if' branch
and handle MPC512x in the 'else' branch.
This modification only reorders instructions but doesn't change behaviour.

Signed-off-by: Alexander Popov <a13xp0p0v88@gmail.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-02 22:36:21 +05:30
Hongbo Zhang 2a5ecb7918 DMA: Freescale: move functions to avoid forward declarations
These functions will be modified in the next patch in the series. By moving the
function in a patch separate from the changes, it will make review easier.

Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
Signed-off-by: Qiang Liu <qiang.liu@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-02 22:17:43 +05:30
Hongbo Zhang 86d19a5491 DMA: Freescale: add fsl_dma_free_descriptor() to reduce code duplication
There are several places where descriptors are freed using identical code.
This patch puts this code into a function to reduce code duplication.

Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
Signed-off-by: Qiang Liu <qiang.liu@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-02 22:17:42 +05:30
Hongbo Zhang 867dfa5dfc DMA: Freescale: remove attribute DMA_INTERRUPT of dmaengine
Delete attribute DMA_INTERRUPT because fsldma doesn't support this function,
exception will be thrown if talitos is used to offload xor at the same time.

Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
Signed-off-by: Qiang Liu <qiang.liu@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-02 22:17:42 +05:30
Hongbo Zhang ccdce9a041 DMA: Freescale: unify register access methods
Methods of accessing DMA controller registers are inconsistent, some registers
are accessed by DMA_IN/OUT directly, while others are accessed by functions
get/set_* which are wrappers of DMA_IN/OUT, and even for the BCR register, it
is read by get_bcr but written by DMA_OUT.
This patch unifies the inconsistent methods, all registers are accessed by
get/set_* now.

Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-02 22:17:42 +05:30
Hongbo Zhang cf7f7a2b4b DMA: Freescale: remove the unnecessary FSL_DMA_LD_DEBUG
Some codes are calling chan_dbg with FSL_DMA_LD_DEBUG surrounded, it is really
unnecessary to use such a macro because chan_dbg is a wrapper of dev_dbg, we do
have corresponding DEBUG macro to switch on/off dev_dbg, and most of the other
codes are also calling chan_dbg directly without using FSL_DMA_LD_DEBUG.

Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-02 22:17:42 +05:30
Kuninori Morimoto dfbb85cab5 DMA: shdma: add cyclic transfer support
This patch add cyclic transfer support and enables dmaengine_prep_dma_cyclic()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
[reflown changelog for readablity]
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-02 21:48:33 +05:30
Kuninori Morimoto 91ea74e9ec DMA: shdma: tidyup callback chunk finder
Current shdma is using "last" which indicates last desc which needs to have
callback function. But that desc's chunks is always 1, we can use it as finder

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
[reflown changelog for readablity]
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-02 21:47:01 +05:30
Laurent Pinchart 593d9c2e10 dma: mmp_pdma: Fix physical channel memory allocation size
Use sizeof(*var) instead of sizeof(type) when calling devm_k*alloc().
This avoids using the wrong type as was done to allocate the physical
channels array.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-02 21:19:07 +05:30
Laurent Pinchart a2a7c176cc dma: mmp_pdma: Simplify access to channel drcmr value
As the physical channel and virtual channel point to each other,
pchan->phy->vchan is always equal to pchan. Simplify the code
accordingly.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-02 21:19:07 +05:30
Srikanth Thokala 9cd4360de6 dma: Add Xilinx AXI Video Direct Memory Access Engine driver support
This is the driver for the AXI Video Direct Memory Access (AXI
VDMA) core, which is a soft Xilinx IP core that provides high-
bandwidth direct memory access between memory and AXI4-Stream
type video target peripherals. The core provides efficient two
dimensional DMA operations with independent asynchronous read
and write channel operation.

This module works on Zynq (ARM Based SoC) and Microblaze platforms.

Signed-off-by: Srikanth Thokala <sthokal@xilinx.com>
Acked-by: Jassi Brar <jassisinghbrar@gmail.com>
Reviewed-by: Levente Kurusa <levex@linux.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-04-30 10:44:13 +05:30