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path: root/drivers/dma
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2016-08-31dmaengine: imx-sdma - reduce transfer latency for DMA cyclic clientsNandor Han
Having the SDMA driver use a tasklet for running the clients callback introduce some issues: - probability to have desynchronized data because of the race condition created since the DMA transaction status is retrieved only when the callback is executed, leaving plenty of time for transaction status to get altered. - inter-transfer latency which can leave channels idle. Move the callback execution, for cyclic channels, to SDMA interrupt (as advised in `Documentation/dmaengine/provider.txt`) to (a)reduce the inter-transfer latency and (b) eliminate the race condition possibility where DMA transaction status might be changed by the time is read. The responsibility of the SDMA interrupt latency is moved to the SDMA clients which case by case should defer the work to bottom-halves when needed. Tested-by: Peter Senna Tschudin <peter.senna@collabora.com> Acked-by: Peter Senna Tschudin <peter.senna@collabora.com> Reviewed-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Nandor Han <nandor.han@ge.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31dmaengine: dw: override LLP support if asked in platform dataAndy Shevchenko
There are at least two known devices, e.g. DMA controller found on ARC AXS101 SDP board, that have LLP register and no multi block transfer support at the same time. Override autodetection by user provided data. Reported-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Bryan O'Donoghue <pure.logic@nexus-software.ie> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31dmaengine: dw: set polarity of handshake interfaceAndy Shevchenko
Intel Quark UART uses DesignWare DMA IP. Though the DMA IP is connected in such way that handshake interface uses inverted polarity. We have to provide a possibility to set this in the DMA driver when configuring a channel. Introduce a new member of custom slave configuration called 'hs_polarity' and set active low polarity in case this value is 'true'. Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Bryan O'Donoghue <pure.logic@nexus-software.ie> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31dmaengine: dw: keep copy of custom slave config in dwcAndy Shevchenko
It seems we need to extend custom slave configuration by one more member to support Intel Quart UART. It becomes a burden to manage all members of struct dw_dma_slave one-by-one. Replace the set of fields by embedding struct dw_dma_slave into struct dw_dma_chan. Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Bryan O'Donoghue <pure.logic@nexus-software.ie> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31dmaengine: cppi41: Prepare to add PM runtime supportTony Lindgren
Let's just move code from cppi41_dma_issue_pending() to push_desc_queue() as that's the only call to push_desc_queue(). We want to do this for PM runtime as we need to call push_desc_queue() also for pending queued transfers from PM runtime resume. No functional changes, just moves code around. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-31Kconfig: Allow k3dma driver to be selected for more then HISI3xx platformsJohn Stultz
This allows the k3dma driver to be selected on HiKey via the ARCH_HISI dependency. Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Cc: Jingoo Han <jg1.han@samsung.com> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mark Brown <broonie@kernel.org> Cc: Andy Green <andy@warmcat.com> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-31k3dma: Add cyclic mode for audioAndy Green
Currently the k3dma driver doesn't offer the cyclic mode necessary for handling audio. This patch adds it. Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mark Brown <broonie@kernel.org> Cc: Andy Green <andy@warmcat.com> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Andy Green <andy.green@linaro.org> [jstultz: Forward ported to mainline, removed a few bits of logic that didn't seem to have much effect] Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-31k3dma: Fix memory handling in preparation for cyclic modeJohn Stultz
With cyclic mode, the shared virt-dma logic doesn't actually manage the descriptor state, nor the calling of the descriptor free callback. This results in leaking a desc structure every time we start an audio transfer. Thus we must manage it ourselves. The k3dma driver already keeps track of the active and finished descriptors via ds_run and ds_done pointers, so cleanup how we handle those two values, so when we tear down everything in terminate_all, call free_desc on the ds_run and ds_done pointers if they are not null. NOTE: HiKey doesn't use the non-cyclic dma modes, so I'm not been able to test those modes. But with this patch we no longer leak the desc structures. Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mark Brown <broonie@kernel.org> Cc: Andy Green <andy@warmcat.com> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-31k3dma: Fix occasional DMA ERR issue by using proper dma apiJohn Stultz
After lots of debugging on an occasional DMA ERR issue, I realized that the desc structures which we point the dma hardware are being allocated out of regular memory. This means when we fill the desc structures, that data doesn't always get flushed out to memory by the time we start the dma transfer, resulting in the dma engine getting some null values, resulting in a DMA ERR on the first irq. Thus, this patch adopts mechanism similar to the zx296702_dma of allocating the desc structures from a dma pool, so the memory caching rules are properly set to avoid this issue. Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mark Brown <broonie@kernel.org> Cc: Andy Green <andy@warmcat.com> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: John Stutlz <john.stultz@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-31k3dma: Fix "nobody cared" message seen on any errorAndy Green
As it was before, as soon as the DMAC IP felt there was an error he would return IRQ_NONE since no actual transfer had completed. After spinning on that for 100K interrupts, Linux yanks the IRQ with a "nobody cared" error. This patch lets it handle the interrupt and keep the IRQ alive. Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mark Brown <broonie@kernel.org> Cc: Andy Green <andy@warmcat.com> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Andy Green <andy.green@linaro.org> [jstultz: Forward ported to mainline] Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-31k3dma: Fix dma err offsetsAndy Green
The offsets for ERR1 and ERR2 are wrong actually. That's why you can never clear an error. Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mark Brown <broonie@kernel.org> Cc: Andy Green <andy@warmcat.com> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Andy Green <andy.green@linaro.org> [jstultz: Forward ported to mainline] Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-31k3dma: Fix hisi burst clippingAndy Green
Max burst len is a 4-bit field, but at the moment it's clipped with a 5-bit constant... reduce it to that which can be expressed Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mark Brown <broonie@kernel.org> Cc: Andy Green <andy@warmcat.com> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Andy Green <andy.green@linaro.org> [jstultz: Forward ported to mainline] Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-31dmaengine: imx-sdma: Add i.MX7 supportFabio Estevam
Allow i.MX7 to work with the imx-sdma driver. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Tested-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-22dmaengine: img-mdc: fix a possible NULL dereferenceLABBE Corentin
of_match_device could return NULL, and so cause a NULL pointer dereference later at line 850: mdma->soc = match->data; For fixing this problem, we use of_device_get_match_data(), this will simplify the code a little by using a standard function for getting the match data. This was reported by coverity (CID 1324134) Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-22dmaengine: tegra210-adma: Update driver to use of_pm_clk_add_clkJon Hunter
Commit 498b5fdd40dd ("PM / clk: Add support for adding a specific clock from device-tree") add a new helper function for adding a clock from device-tree to a device. Update the ADMA driver to use this new function to simplify the driver. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-22dmaengine: at_xdmac: fix to pass correct device identity to free_irq()Wei Yongjun
free_irq() expects the same device identity that was passed to corresponding request_irq(), otherwise the IRQ is not freed. Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver") Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-22dmaengine: fsl_raid: add missing of_node_put() in fsl_re_probe()Wei Yongjun
When terminating for_each_compatible_node() iteration with break or return, of_node_put() should be used to prevent stale device node references from being left behind. Found by Coccinelle. Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-22dmaengine: device must have at least one channelViresh Kumar
The DMA device can't be registered if it doesn't have any channels registered at all. Moreover, it leads to memory leak and is reported by kmemleak as (on 3.10 kernel, and same shall happen on mainline): unreferenced object 0xffffffc09e597240 (size 64): comm "swapper/0", pid 1, jiffies 4294877736 (age 7060.280s) hex dump (first 32 bytes): 00 00 00 00 c0 ff ff ff 30 00 00 ff 00 00 00 ff ........0....... 00 00 00 ff 00 00 00 ff 00 00 00 ff 00 00 00 ff ................ backtrace: [<ffffffc0003079ec>] create_object+0x148/0x2a0 [<ffffffc000cc150c>] kmemleak_alloc+0x80/0xbc [<ffffffc000303a7c>] kmem_cache_alloc_trace+0x120/0x1ac [<ffffffc00054771c>] dma_async_device_register+0x160/0x46c [<ffffffc000548958>] foo_probe+0x1a0/0x264 [<ffffffc0005d6658>] platform_drv_probe+0x14/0x20 [<ffffffc0005d50cc>] driver_probe_device+0x160/0x374 [<ffffffc0005d538c>] __driver_attach+0x60/0x90 [<ffffffc0005d3e78>] bus_for_each_dev+0x7c/0xb0 [<ffffffc0005d4a0c>] driver_attach+0x1c/0x28 [<ffffffc0005d459c>] bus_add_driver+0x124/0x248 [<ffffffc0005d59cc>] driver_register+0x90/0x110 [<ffffffc0005d6bf4>] platform_driver_register+0x58/0x64 [<ffffffc00142a70c>] foo_driver_init+0x10/0x1c [<ffffffc000200878>] do_one_initcall+0xac/0x148 [<ffffffc00140096c>] kernel_init_freeable+0x1a0/0x258 Return -ENODEV from dma_async_device_register() on such a case. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-19dmaengine: pxa_dma: fix debug messageRobert Jarzmik
In a very tight timeframe, the debug message in the transfer completion handler can be misleading, as the completion test report can change just after the message, and the code flow cannot be deduced from the debug message. This is just a cleanup to make debugging easier. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-19dmaengine: pxa_dma: fix hotchain corner caseRobert Jarzmik
In the case where a descriptor is chained on a running channel, and as explained in the comment in the code 10 lines above, the success of the chaining is ensured either if : - the DMA is still running - or if the chained transfer is completed Unfortunately the transfer completness test was done on the descriptor to which the transfer was chained, and not the transfer being chained at the end, ie. hot-chained. This corner case is extremely hard to trigger, as usually the DMA chain is still running, and the first case takes care of returning success of the hot-chaining. It was seen by hot-chaining several "small transfers" to a running "big transfer", not in a real-life usecase but by testing the robustness of the driver. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-10dmaengine: imx-sdma: (trivial) fix a typoMartin Kaiser
Signed-off-by: Martin Kaiser <martin@kaiser.cx> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-10dmaengine: omap-dma: Support for LinkedList transfer of slave_sgPeter Ujfalusi
sDMA in OMAP3630 or newer SoC have support for LinkedList transfer. When LinkedList or Descriptor load feature is present we can create the descriptors for each and program sDMA to walk through the list of descriptors instead of the current way of sDMA stop, sDMA reconfiguration and sDMA start after each SG transfer. By using LinkedList transfer in sDMA the number of DMA interrupts will decrease dramatically. Booting up the board with filesystem on SD card for example: W/o LinkedList support: 27: 4436 0 WUGEN 13 Level omap-dma-engine Same board/filesystem with this patch: 27: 1027 0 WUGEN 13 Level omap-dma-engine Or copying files from SD card to eMCC: 2.1G /usr/ 232001 W/o LinkedList we see ~761069 DMA interrupts. With LinkedList support it is down to ~269314 DMA interrupts. With the decreased DMA interrupt number the CPU load is dropping significantly as well. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-10dmaengine: omap-dma: Use pointer to omap_sg in slave_sg setup's loopPeter Ujfalusi
Instead of accessing the array via index, take the pointer first and use it to set up the omap_sg struct. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-10dmaengine: omap-dma: Add more debug information when freeing channelPeter Ujfalusi
Print the same information the driver prints when allocating the channel resources regarding to the sDMA channel. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-10dmaengine: omap-dma: Dynamically allocate memory for lch_mapPeter Ujfalusi
On OMAP1 platforms we do not have 32 channels available. Allocate the lch_map based on the available channels. This way we are not going to have more visible channels then it is available on the platform. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-10dmaengine: omap-dma: Simplify omap_dma_callbackPeter Ujfalusi
Flatten the indentation level of the function which gives better view on the cases we handle here. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-10dmaengine: omap-dma: Simplify omap_dma_start_sg parameter listPeter Ujfalusi
We can drop the (sg)idx parameter for the omap_dma_start_sg() function and increment the sgidx inside of the same function. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: usb-dmac: check CHCR.DE bit in usb_dmac_isr_channel()Yoshihiro Shimoda
The USB-DMAC's interruption happens even if the CHCR.DE is not set to 1 because CHCR.NULLE is set to 1. So, this driver should call usb_dmac_isr_transfer_end() if the DE bit is set to 1 only. Otherwise, the desc is possible to be NULL in the usb_dmac_isr_transfer_end(). Fixes: 0c1c8ff32fa2 ("dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver) Cc: <stable@vger.kernel.org> # v4.1+ Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: xgene-dma: move unmap to before callbackDave Jiang
Completion callback should happen after dma_descriptor_unmap() has happened. This allow the cache invalidate to happen and ensure that the data accessed by the upper layer is in memory that was from DMA rather than stale data. On some architecture this is done by the hardware, however we should make the code consistent to not cause confusion. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Cc: Rameshwar Prasad Sahu <rsahu@apm.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: sh_shdma-base: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: ppc4xx/adma: move unmap to before callbackDave Jiang
Completion callback should happen after dma_descriptor_unmap() has happened. This allow the cache invalidate to happen and ensure that the data accessed by the upper layer is in memory that was from DMA rather than stale data. On some architecture this is done by the hardware, however we should make the code consistent to not cause confusion. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmengine: xilinx_dma: convert callback to helper functionVinod Koul
Move the xilinx driver to new dmaengine callback Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: mv_xor: move unmap to before callbackDave Jiang
Completion callback should happen after dma_descriptor_unmap() has happened. This allow the cache invalidate to happen and ensure that the data accessed by the upper layer is in memory that was from DMA rather than stale data. On some architecture this is done by the hardware, however we should make the code consistent to not cause confusion. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: fsl_raid: move unmap to before callbackDave Jiang
Completion callback should happen after dma_descriptor_unmap() has happened. This allow the cache invalidate to happen and ensure that the data accessed by the upper layer is in memory that was from DMA rather than stale data. On some architecture this is done by the hardware, however we should make the code consistent to not cause confusion. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Cc: Xuelin Shi <xuelin.shi@freescale.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: fsldma: move unmap to before callbackDave Jiang
Completion callback should happen after dma_descriptor_unmap() has happened. This allow the cache invalidate to happen and ensure that the data accessed by the upper layer is in memory that was from DMA rather than stale data. On some architecture this is done by the hardware, however we should make the code consistent to not cause confusion. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: Li Yang <leoyang.li@nxp.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: ioatdma: add error strings to chanerr outputDave Jiang
Provide a mechanism to translate CHANERR bits to English strings in order to allow user to report more concise errors. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: ioatdma: Add error handling to ioat driverDave Jiang
Adding error handling to the ioatdma driver so that when a read/write error occurs the error results are reported back and all the remaining descriptors are aborted. This utilizes the new dmaengine callback function that allows reporting of results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: add support to provide error result from a DMA transationDave Jiang
Adding a new callback that will provide the error result for a transaction. The result is allocated on the stack and the callback should create a copy if it wishes to retain the information after exiting. The result parameter is now defined and takes over the dummy void pointer we placed in the helper functions previously. dmaengine drivers should start converting to the new "callback_result" callback in order to receive transaction results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: xgene-dma: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: virt-dma: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: txx9dmac: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: timb_dma: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: tegra20-apb-dma: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Cc: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: ste_dma40: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: sirf-dma: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: sh_rcar-dmac: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: qcom_hidma: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: ppc4xx_adma: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: pl330: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: pch_dma: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-04 10:20:51 +0000