Commit Graph

65 Commits

Author SHA1 Message Date
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
Linus Torvalds 1aacb90eaa Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next
Pull trivial tree changes from Jiri Kosina:
 "Usual pile of patches from trivial tree that make the world go round"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits)
  staging: go7007: remove reference to CONFIG_KMOD
  aic7xxx: Remove obsolete preprocessor define
  of: dma: doc fixes
  doc: fix incorrect formula to calculate CommitLimit value
  doc: Note need of bc in the kernel build from 3.10 onwards
  mm: Fix printk typo in dmapool.c
  modpost: Fix comment typo "Modules.symvers"
  Kconfig.debug: Grammar s/addition/additional/
  wimax: Spelling s/than/that/, wording s/destinatary/recipient/
  aic7xxx: Spelling s/termnation/termination/
  arm64: mm: Remove superfluous "the" in comment
  of: Spelling s/anonymouns/anonymous/
  dma: imx-sdma: Spelling s/determnine/determine/
  ath10k: Improve grammar in comments
  ath6kl: Spelling s/determnine/determine/
  of: Improve grammar for of_alias_get_id() documentation
  drm/exynos: Spelling s/contro/control/
  radio-bcm2048.c: fix wrong overflow check
  doc: printk-formats: do not mention casts for u64/s64
  doc: spelling error changes
  ...
2014-06-04 08:50:34 -07:00
Geert Uytterhoeven 9d296ec6fd of: dma: Grammar s/requests/request/, s/used required/required/
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01 23:10:06 +05:30
Olof Johansson 3a5e23cf9e This series makes edma use configuration
information available within the IP instead
 of reading it from platform data or DT. Some
 other useful clean-ups are included too.
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Merge tag 'davinci-for-v3.16/edma' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers

Merge "DaVinci EDMA clean-up for v3.16" from Sekhar Nori:

This series makes edma use configuration information available within
the IP instead of reading it from platform data or DT. Some other useful
clean-ups are included too.

* tag 'davinci-for-v3.16/edma' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: (34 commits)
  ARM: edma: Remove redundant/unused parameters from edma_soc_info
  ARM: davinci: Remove redundant/unused parameters for edma
  ARM: dts: am4372: Remove obsolete properties from edma node
  ARM: dts: am33xx: Remove obsolete properties from edma node
  dt/bindings: ti,edma: Remove redundant properties from documentation
  ARM: edma: Get IP configuration from HW (number of channels, tc, etc)
  ARM: edma: Save number of regions from pdata to struct edma
  ARM: edma: Remove num_cc member from struct edma
  ARM: edma: Remove queue_tc_mapping data from edma_soc_info
  ARM: davinci: Remove eDMA3 queue_tc_mapping data from edma_soc_info
  ARM: edma: Do not change TC -> Queue mapping, leave it to default.
  ARM: edma: Take the number of tc from edma_soc_info (pdata)
  ARM: edma: No need to clean the pdata in edma_of_parse_dt()
  ARM: edma: Clean up and simplify the code around irq request
  dmaengine: edma: update DMA memcpy to use new param element
  dmaengine: edma: Document variables used for residue accounting
  dmaengine: edma: Provide granular accounting
  dmaengine: edma: Make reading the position of active channels work
  dmaengine: edma: Store transfer data in edma_desc and edma_pset
  dmaengine: edma: Create private pset struct
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
2014-05-26 14:59:05 -07:00
Geert Uytterhoeven 1f154fadb1 of: dma: doc fixes
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-05-23 14:36:11 +02:00
Peter Ujfalusi efc24e1480 dt/bindings: ti,edma: Remove redundant properties from documentation
From CCCFG register of eDMA3 we can get all the needed information for the
driver about the IP:
Number of channels: NUM_DMACH
Number of regions: NUM_REGN
Number of slots (PaRAM sets): NUM_PAENTRY
Number of TC/EQ: NUM_EVQUE

The ti,edma-regions; ti,edma-slots and dma-channels in DT are
redundant since the very same information can be obtained from the HW.
The mentioned properties are deprecated.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2014-05-22 14:55:19 +05:30
Geert Uytterhoeven c1e0cffddf dma: imx-sdma: Spelling s/determnine/determine/
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-05-05 15:37:49 +02:00
Laurent Pinchart af98715f28 dma: mmp_pdma: Fix the #dma-channels DT property documentation
The property is optional and defaults to 32. Document it as such.

Cc: devicetree@vger.kernel.org
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 eebeac03db dma: Add Xilinx Video DMA DT Binding Documentation
Device-tree binding documentation of Xilinx Video DMA Engine

Signed-off-by: Srikanth Thokala <sthokal@xilinx.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-04-30 10:44:13 +05:30
Thomas Gleixner cf7eb97911 ARM: common: edma: Fix xbar mapping
This is another great example of trainwreck engineering:

commit 2646a0e529 (ARM: edma: Add EDMA crossbar event mux support)
added support for using EDMA on peripherals which have no direct EDMA
event mapping.

The code compiles and does not explode in your face, but that's it.

1) Reading an u16 array from an u32 device tree array simply does not
   work. Even if the function is named "edma_of_read_u32_to_s16_array".

   It merily calls of_property_read_u16_array. So the resulting 16bit
   array will have every other entry = 0.

2) The DT entry for the xbar registers related to xbar has length 0x10
   instead of the real length: 0xfd0 - 0xf90 = 0x40.

   Not a real problem as it does not cross a page boundary, but
   wrong nevertheless.

3) But none of this matters as the mapping never happens:

   After reading nonsense edma_of_read_u32_to_s16_array() invalidates
   the first array entry pair, so nobody can ever notice the
   braindamage by immediate explosion.

Seems the QA criteria for this code was solely not to explode when
someone adds edma-xbar-event-map entries to the DT. Goal achieved,
congratulations!

Not really helpful if someone wants to use edma on a device which
requires a xbar mapping.

Fix the issues by:

- annotating the device tree entry with "/bits/ 16" as documented in
  the of_property_read_u16_array kernel doc

- make the size of the xbar register mapping correct

- invalidating the end of the array and not the start

This convoluted mess wants to be completely rewritten as there is no
point to keep the xbar_chan array memory and the iomapping of the xbar
regs around forever. Marking the xbar mapped channels as used should
be done right there.

But that's a different issue and this patch is small enough to make it
work and allows a simple backport for stable.

Cc: stable@vger.kernel.org # v3.12+
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2014-04-29 19:33:49 +05:30
Linus Torvalds 6c61403a44 Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine updates from Vinod Koul:
 - New driver for Qcom bam dma
 - New driver for RCAR peri-peri
 - New driver for FSL eDMA
 - Various odd fixes and updates thru the subsystem

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (29 commits)
  dmaengine: add Qualcomm BAM dma driver
  shdma: add R-Car Audio DMAC peri peri driver
  dmaengine: sirf: enable generic dt binding for dma channels
  dma: omap-dma: Implement device_slave_caps callback
  dmaengine: qcom_bam_dma: Add device tree binding
  dma: dw: Add suspend and resume handling for PCI mode DW_DMAC.
  dma: dw: allocate memory in two stages in probe
  Add new line to test result strings produced in verbose mode
  dmaengine: pch_dma: use tasklet_kill in teardown
  dmaengine: at_hdmac: use tasklet_kill in teardown
  dma: cppi41: start tear down only if channel is busy
  usb: musb: musb_cppi41: Dont reprogram DMA if tear down is initiated
  dmaengine: s3c24xx-dma: make phy->irq signed for error handling
  dma: imx-dma: Add missing module owner field
  dma: imx-dma: Replace printk with dev_*
  dma: fsl-edma: fix static checker warning of NULL dereference
  dma: Remove comment about embedding dma_slave_config into custom structs
  dma: mmp_tdma: move to generic device tree binding
  dma: mmp_pdma: add IRQF_SHARED when request irq
  dma: edma: Fix memory leak in edma_prep_dma_cyclic()
  ...
2014-04-10 08:55:08 -07:00
Vinod Koul 8673bcef8c Merge branch 'topic/bam' into for-linus
Conflicts:
	drivers/dma/Makefile

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-04-05 20:45:55 +05:30
Barry Song 2e041c9462 dmaengine: sirf: enable generic dt binding for dma channels
move to support of_dma_request_slave_channel() and dma_request_slave_channel.
we add a xlate() to let dma clients be able to find right dma_chan by generic
"dmas" properties in dts.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-03-29 19:20:13 +05:30
Andy Gross cca946eae8 dmaengine: qcom_bam_dma: Add device tree binding
Add device tree binding support for the QCOM BAM DMA driver.

Acked-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-03-29 18:52:28 +05:30
Markus Pargmann 63edea16b7 dma: sdma: Add imx25 compatible
imx25 did not work without a firmware previously.

This patch adds a DT compatible to pass the correct data with the
default script addresses for imx25.

Add imx25 compatible to the list of compatibles in the binding
documentation.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-02-18 17:10:49 +05:30
Jingchang Lu d6be34fbd3 dma: Add Freescale eDMA engine driver support
Add Freescale enhanced direct memory(eDMA) controller support.
This module can be found on Vybrid and LS-1 SoCs.

Signed-off-by: Alison Wang <b18965@freescale.com>
Signed-off-by: Jingchang Lu <b35083@freescale.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-02-18 16:52:35 +05:30
Linus Torvalds ca2a650f3d Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dma updates from Vinod Koul:
 - new driver for BCM2835 used in R-pi
 - new driver for MOXA ART
 - dma_get_any_slave_channel API for DT based systems
 - minor fixes and updates spread acrooss driver

[ The fsl-ssi dual fifo mode support addition clashed badly with the
  other changes to fsl-ssi that came in through the sound merge.  I did
  a very rough cut at fixing up the conflict, but Nicolin Chen (author
  of both sides) will need to verify and check things ]

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (36 commits)
  dmaengine: mmp_pdma: fix mismerge
  dma: pl08x: Export pl08x_filter_id
  acpi-dma: align documentation with kernel-doc format
  dma: fix vchan_cookie_complete() debug print
  DMA: dmatest: extend the "device" module parameter to 32 characters
  drivers/dma: fix error return code
  dma: omap: Set debug level to debugging messages
  dmaengine: fix kernel-doc style typos for few comments
  dma: tegra: add support for Tegra148/124
  dma: dw: use %pad instead of casting dma_addr_t
  dma: dw: join split up messages
  dma: dw: fix style of multiline comment
  dmaengine: k3dma: fix sparse warnings
  dma: pl330: Use dma_get_slave_channel() in the of xlate callback
  dma: pl330: Differentiate between submitted and issued descriptors
  dmaengine: sirf: Add device_slave_caps interface
  DMA: Freescale: change BWC from 256 bytes to 1024 bytes
  dmaengine: Add MOXA ART DMA engine driver
  dmaengine: Add DMA_PRIVATE to BCM2835 driver
  dma: imx-sdma: Assign a default script number for ROM firmware cases
  ...
2014-01-29 20:27:23 -08:00
Jonas Jensen 5f9e685a0d dmaengine: Add MOXA ART DMA engine driver
The MOXA ART SoC has a DMA controller capable of offloading expensive
memory operations, such as large copies. This patch adds support for
the controller including four channels. Two of these are used to
handle MMC copy on the UC-7112-LX hardware. The remaining two can be
used in a future audio driver or client application.

Signed-off-by: Jonas Jensen <jonas.jensen@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-01-20 12:32:46 +05:30
Florian Meier 96286b5766 dmaengine: Add support for BCM2835
Add support for DMA controller of BCM2835 as used in the Raspberry Pi.
Currently it only supports cyclic DMA.

Signed-off-by: Florian Meier <florian.meier@koalo.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-01-07 21:36:39 +05:30
Olof Johansson 770039fef4 Merge branch 'tegra/dma-reset-rework' into next/dt
Bringing in the tegra dma/reset framework cleanup as a base for the DT changes.

* tegra/dma-reset-rework: (320 commits)
  spi: tegra: checking for ERR_PTR instead of NULL
  ASoC: tegra: update module reset list for Tegra124
  clk: tegra: remove bogus PCIE_XCLK
  clk: tegra: remove legacy reset APIs
  ARM: tegra: remove legacy DMA entries from DT
  ARM: tegra: remove legacy clock entries from DT
  USB: EHCI: tegra: use reset framework
  Input: tegra-kbc - use reset framework
  serial: tegra: convert to standard DMA DT bindings
  serial: tegra: use reset framework
  spi: tegra: convert to standard DMA DT bindings
  spi: tegra: use reset framework
  staging: nvec: use reset framework
  i2c: tegra: use reset framework
  ASoC: tegra: convert to standard DMA DT bindings
  ASoC: tegra: allocate AHUB FIFO during probe() not startup()
  ASoC: tegra: call pm_runtime APIs around register accesses
  ASoC: tegra: use reset framework
  dma: tegra: register as an OF DMA controller
  dma: tegra: use reset framework
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-12-26 11:03:29 -08:00
Nicolin Chen 1a895578d4 dma: imx-sdma: Add new dma type for ssi dual fifo script
This patch adds a new DMA_TYPE for SSI dual FIFO script, included
in SDMA firmware version 2. This script would allow SSI use dual
fifo mode to transimit/receive data without occasional hardware
underrun/overrun.

Signed-off-by: Nicolin Chen <b42378@freescale.com>
Acked-by: Kumar Gala <galak@codeaurora.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-12-16 09:18:48 +05:30
Stephen Warren ed520c90b3 ARM: tegra: document use of standard DMA DT bindings
Update all the Tegra DT bindings to require the standard dmas/dma-names
properties rather than non-standard nvidia,dma-request-selector property.

This is a DT-ABI-incompatible change. It is the second of two changes
required for me to consider the Tegra DT bindings as stable, the other
being the previous conversion to the common reset bindings.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-12-11 16:42:23 -07:00
Stephen Warren 07999587b7 ARM: tegra: document reset properties in DT bindings
Update all the Tegra DT bindings to require resets/reset-names properties
where the HW module has reset inputs. Remove any entries from clocks or
clock-names that were only required to identify reset inputs, rather than
referring to real clocks.

This is a DT-ABI-incompatible change. It is the first of two changes
required for me to consider the Tegra DT bindings as stable, the other
being conversion to the common DMA DT bindings.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-By: Terje Bergstrom <tbergstrom@nvidia.com>
2013-12-11 16:42:13 -07:00
Stephen Warren d8f64797c5 ARM: tegra: add missing clock documentation to DT bindings
Many of the Tegra DT binding documents say nothing about the clocks or
clock-names properties, yet those are present and required in DT files.
This patch simply updates the documentation file to match the implicit
definition of the binding, based on real-world DT content.

All Tegra bindings that mention clocks are updated to have consistent
wording and formatting of the clock-related properties.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-By: Terje Bergstrom <tbergstrom@nvidia.com>
2013-12-11 16:41:55 -07:00
Lee Jones 0a05ef0ec1 dma: ste_dma40: Expand DT binding to accept 'high-priority channel' flag
This is used for MSP (audio) devices which is about to be fully DT:ed.

Cc: devicetree@vger.kernel.org
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-11-26 21:01:58 +01:00
Ludovic Desroches 13098cf05a dma: atmel-dma: correct typo in the device tree bindings documentation
The value to set ASAP mode for FIFO configuration is 2 instead of 1.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-20 18:47:43 +05:30
Linus Torvalds ec5b103ecf 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
  ...
2013-09-10 13:37:36 -07:00
Vinod Koul 265d9c673d Merge branch 'topic/sh' into for-linus
Conflicts:
	drivers/dma/sh/Kconfig
	drivers/dma/sh/shdmac.c

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-09-02 17:42:35 +05:30
Zhangfei Gao 8e6152bc66 dmaengine: Add hisilicon k3 DMA engine driver
Add dmaengine driver for hisilicon k3 platform based on virt_dma

Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Tested-by: Kai Yang <jean.yangkai@huawei.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-08-28 11:23:40 +05:30
Guennadi Liakhovetski 4981c4dc19 DMA: shdma: switch DT mode to use configuration data from a match table
This facilitates DMAC DT support by eliminating the need in AUXDATA and
avoiding creating complex DT data. This also fits well with DMAC devices,
of which SoCs often have multiple identical copies and it is perfectly
valid to use a single configuration data set for all of them.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-08-27 14:25:09 +05:30
Sascha Hauer dcfec3c098 dma: imx-sdma: Add ROM script addresses to driver
This adds the ROM script addresses for i.MX25, i.MX5x and i.MX6 to the
SDMA driver needed for the driver to work without additional firmware.

The ROM script addresses are SoC specific and in some cases even tapeout
specific. This patch adds the ROM script addresses only for SoCs which
do not have a tapeout specific SDMA ROM, because currently it's unclear
how this case should be handled.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-08-26 20:47:16 +05:30
Masanari Iida 9ca1839776 doc: devicetree: bindings: Fix typo in bindings
Correct spelling typo in devicetree/bindings.

Singed-off-by: Masanari Iida <standby24x7@gmail.com>

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-07-25 12:32:07 +02:00
Linus Torvalds d2b4a64671 Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine updates from Vinod Koul:
 "Once you have some time from extended weekend celebrations please
  consider pulling the following to get:
   - Various fixes and PCI driver for dw_dmac by Andy
   - DT binding for imx-dma by Markus & imx-sdma by Shawn
   - DT fixes for dmaengine by Lars
   - jz4740 dmac driver by Lars
   - and various fixes across the drivers"

What "extended weekend celebrations"?  I'm in the merge window, who has
time for extended celebrations..

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (40 commits)
  DMA: shdma: add DT support
  DMA: shdma: shdma_chan_filter() has to be in shdma-base.h
  DMA: shdma: (cosmetic) don't re-calculate a pointer
  dmaengine: at_hdmac: prepare clk before calling enable
  dmaengine/trivial: at_hdmac: add curly brackets to if/else expressions
  dmaengine: at_hdmac: remove unsuded atc_cleanup_descriptors()
  dmaengine: at_hdmac: add FIFO configuration parameter to DMA DT binding
  ARM: at91: dt: add header to define at_hdmac configuration
  MIPS: jz4740: Correct clock gate bit for DMA controller
  MIPS: jz4740: Remove custom DMA API
  MIPS: jz4740: Register jz4740 DMA device
  dma: Add a jz4740 dmaengine driver
  MIPS: jz4740: Acquire and enable DMA controller clock
  dma: mmp_tdma: disable irq when disabling dma channel
  dmaengine: PL08x: Avoid collisions with get_signal() macro
  dmaengine: dw: select DW_DMAC_BIG_ENDIAN_IO automagically
  dma: dw: add PCI part of the driver
  dma: dw: split driver to library part and platform code
  dma: move dw_dmac driver to an own directory
  dw_dmac: don't check resource with devm_ioremap_resource
  ...
2013-07-07 11:11:43 -07:00
Guennadi Liakhovetski 67eacc1583 DMA: shdma: add DT support
This patch adds Device Tree support to the shdma driver. No special DT
properties are used, only standard DMA DT bindings are implemented. Since
shdma controllers reside on SoCs, their configuration is SoC-specific and
shall be passed to the driver from the SoC platform data, using the
auxdata procedure.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-07-05 11:41:00 +05:30
Ludovic Desroches 62971b2982 dmaengine: at_hdmac: add FIFO configuration parameter to DMA DT binding
For most devices the FIFO configuration is the same i.e. when half FIFO size is
available/filled, a source/destination request is serviced. But USART devices
have to do it when there is enough space/data available to perform a single
AHB access so the ASAP configuration.

Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-07-05 11:40:54 +05:30
Shawn Guo 9479e17c9b dma: imx-sdma: move to generic device tree bindings
Update imx-sdma driver to adopt generic DMA device tree bindings.  It
calls of_dma_controller_register() with imx-sdma specific of_dma_xlate
to get the generic DMA device tree helper support.  The #dma-cells for
imx-sdma must be 3, which includes request ID, peripheral type and
priority.

The existing way of requesting channel, clients directly call
dma_request_channel(), still work there, and will be removed after
all imx-sdma clients get converted to generic DMA device tree helper.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2013-07-05 11:40:40 +05:30
Markus Pargmann 290ad0f9d9 dma: imx-dma: Add oftree support
Adding devicetree support for imx-dma driver. Use driver name for
function 'imx_dma_is_general_purpose' because the devicename for
devicetree initialized devices is different.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-07-05 11:40:26 +05:30
Linus Torvalds 0bf6a210a4 ARM SoC driver specific changes
These changes are all driver specific and cross over between arm-soc
 contents and some other subsystem, in these cases cpufreq, crypto,
 dma, pinctrl, mailbox and usb, and the subsystem owners agreed to
 have these changes merged through arm-soc. As we proceed to untangle
 the dependencies between platform code and driver code, the amount of
 changes in this category is fortunately shrinking, for 3.11 we have
 16 branches here and 101 non-merge changesets, the majority of which
 are for the stedma40 dma engine driver used in the ux500 platform.
 Cleaning up that code touches multiple subsystems, but gets rid
 of the dependency in the end.
 
 The mailbox code moved out from mach-omap2 to drivers/mailbox
 is an intermediate step and is still omap specific at the moment.
 Patches exist to generalize the subsystem and add other drivers
 with the same API, but those did not make it for 3.11.
 
 Conflicts:
 * In cpu-db8500.c results from the removal of the u8500_of_init_devices
   function in combination with the split of u8500_auxdata_lookup.
 
 * In arch/arm/mach-omap2/devices.c, the includes got reshuffled.
   we need to keep linux/wl12xx.h and linux/platform_data/mailbox-omap.h.
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Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver specific changes from Arnd Bergmann:
 "These changes are all driver specific and cross over between arm-soc
  contents and some other subsystem, in these cases cpufreq, crypto,
  dma, pinctrl, mailbox and usb, and the subsystem owners agreed to have
  these changes merged through arm-soc.

  As we proceed to untangle the dependencies between platform code and
  driver code, the amount of changes in this category is fortunately
  shrinking, for 3.11 we have 16 branches here and 101 non-merge
  changesets, the majority of which are for the stedma40 dma engine
  driver used in the ux500 platform.  Cleaning up that code touches
  multiple subsystems, but gets rid of the dependency in the end.

  The mailbox code moved out from mach-omap2 to drivers/mailbox is an
  intermediate step and is still omap specific at the moment.  Patches
  exist to generalize the subsystem and add other drivers with the same
  API, but those did not make it for 3.11."

* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (101 commits)
  crypto: ux500: use dmaengine_submit API
  crypto: ux500: use dmaengine_prep_slave_sg API
  crypto: ux500: use dmaengine_device_control API
  crypto: ux500/crypt: add missing __iomem qualifiers
  crypto: ux500/hash: add missing static qualifiers
  crypto: ux500/hash: use readl on iomem addresses
  dmaengine: ste_dma40: Declare memcpy config as static
  ARM: ux500: Remove mop500_snowball_ethernet_clock_enable()
  ARM: ux500: Correct the EN_3v3 regulator's on/off GPIO
  ARM: ux500: Provide a AB8500 GPIO Device Tree node
  gpio: rcar: fix gpio_rcar_of_table
  gpio-rcar: Remove #ifdef CONFIG_OF around OF-specific sections
  gpio-rcar: Reference core gpio documentation in the DT bindings
  clk: exynos5250: Add enum entries for divider clock of i2s1 and i2s2
  ARM: dts: Update Samsung I2S documentation
  ARM: dts: add clock provider information for i2s controllers in Exynos5250
  ARM: dts: add Exynos audio subsystem clock controller node
  clk: samsung: register audio subsystem clocks using common clock framework
  ARM: dts: use #include for all device trees for Samsung
  pinctrl: s3c24xx: use correct header for chained_irq functions
  ...
2013-07-02 14:33:21 -07:00
Arnd Bergmann 8ecb6ca61a DaVinci SoC updates for v3.11 - part 2
--------------------------------------
 
 This pull request adds DT and runtime PM to
 EDMA ARM private API so it can be used on
 DT enabled DaVinci and OMAP platforms.
 
 Also adds DMA channel crossbar mapping
 support to be used by DT-enabled platforms
 which use it.
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Merge tag 'davinci-for-v3.11/soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/soc

From Sekhar Nori:

DaVinci SoC updates for v3.11 - part 2

This pull request adds DT and runtime PM to
EDMA ARM private API so it can be used on
DT enabled DaVinci and OMAP platforms.

Also adds DMA channel crossbar mapping
support to be used by DT-enabled platforms
which use it.

* tag 'davinci-for-v3.11/soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  dmaengine: edma: enable build for AM33XX
  ARM: edma: Add EDMA crossbar event mux support
  ARM: edma: Add DT and runtime PM support to the private EDMA API
  dmaengine: edma: Add TI EDMA device tree binding
  ARM: edma: Convert to devm_* api

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-06-24 16:46:23 +02:00
Matt Porter bf3156dde3 dmaengine: edma: Add TI EDMA device tree binding
The binding definition is based on the generic DMA controller
binding.

Joel:
* Droped reserved and queue DT entries from Documentation
for now from the original patch series (v10)
* Included properties in Documentation and clarified DMA properties (V11)
* Made ti,hwmod option
* Clarified DMA entries

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Matt Porter <mporter@ti.com>
Signed-off-by: Joel A Fernandes <joelagnel@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2013-06-24 14:02:02 +05:30
Linus Walleij faadc6e3d5 dma: coh901318: add devicetree support
This adds support for probing the COH 901 318 DMA controller
and channels from the device tree.

Contains portions of a sketch patch from Arnd Bergmann.

Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-17 13:54:27 +02:00
Lee Jones 499c2bc3cc dmaengine: ste_dma40: Fetch disabled channels from DT
Some platforms have channels which are not available for normal use.
This information is currently passed though platform data in internal
BSP kernels. Once those platforms land, they'll need to configure them
appropriately, so we may as well add the infrastructure.

Cc: Dan Williams <djbw@fb.com>
Cc: Per Forlin <per.forlin@stericsson.com>
Cc: Rabin Vincent <rabin@rab.in>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-04 11:12:12 +02:00
Lee Jones a7dacb68b3 dmaengine: ste_dma40: Allow memcpy channels to be configured from DT
At this moment in time the memcpy channels which can be used by the D40
are fixed, as each supported platform in Mainline uses the same ones.
However, platforms do exist which don't follow this convention, so
these will need to be tailored. Fortunately, these platforms will be DT
only, so this change has very little impact on platform data.

Cc: Dan Williams <djbw@fb.com>
Cc: Per Forlin <per.forlin@stericsson.com>
Cc: Rabin Vincent <rabin@rab.in>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-04 11:12:11 +02:00
Lee Jones fa332de5c6 dmaengine: ste_dma40: Supply full Device Tree parsing support
Using the new DMA DT bindings and API, we can register the DMA40 driver
as Device Tree capable. Now, when a client attempts to allocate a
channel using the DMA DT bindings via its own node, we are able to parse
the request and allocate a channel in the correct manner.

Cc: Dan Williams <djbw@fb.com>
Cc: Per Forlin <per.forlin@stericsson.com>
Cc: Rabin Vincent <rabin@rab.in>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: devicetree-discuss@lists.ozlabs.org
Acked-by: Vinod Koul <vinod.koul@intel.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-23 21:13:08 +02:00
Linus Torvalds 1763e735b0 Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine updates from Vinod Koul:
 "This time we have dmatest improvements from Andy along with dw_dmac
  fixes.  He has also done support for acpi for dmanegine.

  Also we have bunch of fixes going in DT support for dmanegine for
  various folks.  Then Haswell and other ioat changes from Dave and
  SUDMAC support from Shimoda."

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (53 commits)
  dma: tegra: implement suspend/resume callbacks
  dma:of: Use a mutex to protect the of_dma_list
  dma: of: Fix of_node reference leak
  dmaengine: sirf: move driver init from module_init to subsys_initcall
  sudmac: add support for SUDMAC
  dma: sh: add Kconfig
  at_hdmac: move to generic DMA binding
  ioatdma: ioat3_alloc_sed can be static
  ioatdma: Adding write back descriptor error status support for ioatdma 3.3
  ioatdma: S1200 platforms ioatdma channel 2 and 3 falsely advertise RAID cap
  ioatdma: Adding support for 16 src PQ ops and super extended descriptors
  ioatdma: Removing hw bug workaround for CB3.x .2 and earlier
  dw_dmac: add ACPI support
  dmaengine: call acpi_dma_request_slave_channel as well
  dma: acpi-dma: introduce ACPI DMA helpers
  dma: of: Remove unnecessary list_empty check
  DMA: OF: Check properties value before running be32_to_cpup() on it
  DMA: of: Constant names
  ioatdma: skip silicon bug workaround for pq_align for cb3.3
  ioatdma: Removing PQ val disable for cb3.3
  ...
2013-05-09 09:46:45 -07:00
Ludovic Desroches bbe89c8e3d at_hdmac: move to generic DMA binding
Update at_hdmac driver to support generic DMA device tree binding. Devices
can still request channel with dma_request_channel() then it doesn't break
DMA for non DT boards.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-04-30 14:17:41 +05:30
Shawn Guo f30fb03d4d ARM: dts: add generic DMA device tree binding for mxs-dma
Add generic DMA device tree binding for mxs-dma.  The changes include:

 * Add channel interrupts into DMA controller nodes
 * Add properties '#dma-cells' and 'dma-channels' for DMA controller nodes
 * And properties 'dmas' and 'dma-names' for DMA client nodes
 * Update mxs-dma device tree binding doc

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2013-04-04 21:22:43 +08:00
Arnd Bergmann f9c6a655a9 dmaengine: dw_dmac: move to generic DMA binding
The original device tree binding for this driver, from Viresh Kumar
unfortunately conflicted with the generic DMA binding, and did not allow
to completely seperate slave device configuration from the controller.

This is an attempt to replace it with an implementation of the generic
binding, but it is currently completely untested, because I do not have
any hardware with this particular controller.

The patch applies on top of the slave-dma tree, which contains both the base
support for the generic DMA binding, as well as the earlier attempt from
Viresh. Both of these are currently not merged upstream however.

This version incorporates feedback from Viresh Kumar, Andy Shevchenko
and Russell King.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Vinod Koul <vinod.koul@linux.intel.com>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-02-28 09:53:21 +05:30
Padmavathi Venna 42cf20980c ARM: dts: pl330: Add #dma-cells for generic dma binding support
This patch adds #dma-cells property to PL330 DMA controller
nodes for supporting generic dma dt bindings on samsung
exynos5250 platform.

Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-02-14 20:04:27 +05:30