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2019-01-07dmaengine: stm32-dma: Add PM Runtime supportPierre-Yves MORDRET
Use pm_runtime engine for clock management purpose. Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: stm32-dma: check FIFO error interrupt enablePierre-Yves MORDRET
For avoiding false FIFO detection, check FIFO Error interrupt is enabled prior raising any errors. This will prevent having spurious FIFO error where it shouldn't. Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: stm32-mdma: Add a check on read_u32_arrayAditya Pakki
In stm32_mdma_probe, after reading the property "st,ahb-addr-masks", the second call is not checked for failure. This time of check to time of use case of "count" error is sent upstream. Signed-off-by: Aditya Pakki <pakki001@umn.edu> Acked-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: qcom_hidma: Check for driver register failureAditya Pakki
While initializing the driver, the function platform_driver_register can fail and return an error. Consistent with other invocations, this patch returns the error upstream. Signed-off-by: Aditya Pakki <pakki001@umn.edu> Acked-by: Sinan Kaya <okaya@kernel.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: mv_xor: Fix a missing check in mv_xor_channel_addAditya Pakki
dma_async_device_register() may fail and return an error. The capabilities checked in mv_xor_channel_add() are not complete. The fix handles the error by freeing the resources. Signed-off-by: Aditya Pakki <pakki001@umn.edu> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: fsl-qdma: add MODULE_LICENSEArnd Bergmann
The newly added driver lacks a MODULE_LICENSE tag, which now produces a warning: WARNING: modpost: missing MODULE_LICENSE() in drivers/dma/fsl-qdma.o Add the license according to the SPDX specifier. Fixes: 75628c149b0d ("dmaengine: fsl-qdma: Add qDMA controller driver for Layerscape SoCs") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: fsl-qdma: Add qDMA controller driver for Layerscape SoCsPeng Ma
NXP Queue DMA controller(qDMA) on Layerscape SoCs supports channel virtuallization by allowing DMA jobs to be enqueued into different command queues. Signed-off-by: Wen He <wen.he_1@nxp.com> Signed-off-by: Jiaheng Fan <jiaheng.fan@nxp.com> Signed-off-by: Peng Ma <peng.ma@nxp.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: fsldma: Adding macro FSL_DMA_IN/OUT implement for ARM platformPeng Ma
This patch add the macro FSL_DMA_IN/OUT implement for ARM platform. Signed-off-by: Wen He <wen.he_1@nxp.com> Signed-off-by: Peng Ma <peng.ma@nxp.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: fsldma: Replace DMA_IN/OUT by FSL_DMA_IN/OUTWen He
This patch implement a standard macro call functions is used to NXP dma drivers. Signed-off-by: Wen He <wen.he_1@nxp.com> Signed-off-by: Peng Ma <peng.ma@nxp.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: sa11x0: drop useless LIST_HEADJulia Lawall
Drop LIST_HEAD where the variable it declares has never been used. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier x; @@ - LIST_HEAD(x); ... when != x // </smpl> Fixes: 4a533218fccf ("dmaengine: sa11x0: Split device_control") Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: pl330: drop useless LIST_HEADJulia Lawall
Drop LIST_HEAD where the variable it declares is never used. The variable has not been used since the function was introduced in 740aa95703c5 ("dmaengine: pl330: Split device_control"). The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier x; @@ - LIST_HEAD(x); ... when != x // </smpl> Fixes: 740aa95703c5 ("dmaengine: pl330: Split device_control") Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: st_fdma: drop useless LIST_HEADJulia Lawall
Drop LIST_HEAD where the variable it declares is never used. The declarations were introduced with the file, but the declared variables were not used. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier x; @@ - LIST_HEAD(x); ... when != x // </smpl> Fixes: 6b4cd727eaf1 ("dmaengine: st_fdma: Add STMicroelectronics FDMA engine driver support") Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: dw: drop useless LIST_HEADJulia Lawall
Drop LIST_HEAD where the variable it declares is never used. Commit ab703f818ac3 ("dmaengine: dw: lazy allocation of dma descriptors") removed the uses, but not the declaration. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier x; @@ - LIST_HEAD(x); ... when != x // </smpl> Fixes: ab703f818ac3 ("dmaengine: dw: lazy allocation of dma descriptors") Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07dmaengine: at_hdmac: drop useless LIST_HEADJulia Lawall
Drop LIST_HEAD where the variable it declares is never used. tmp_list has been declared since the introduction of the driver and has never been used. The two declarations of list were introduced with the containing functions but were also not used. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier x; @@ - LIST_HEAD(x); ... when != x // </smpl> Fixes: dc78baa2b90b ("dmaengine: at_hdmac: new driver for the Atmel AHB DMA Controller") Fixes: 4facfe7f09f2b ("dmaengine: hdmac: Split device_control") Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-01Merge tag 'iommu-updates-v4.21' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU updates from Joerg Roedel: - Page table code for AMD IOMMU now supports large pages where smaller page-sizes were mapped before. VFIO had to work around that in the past and I included a patch to remove it (acked by Alex Williamson) - Patches to unmodularize a couple of IOMMU drivers that would never work as modules anyway. - Work to unify the the iommu-related pointers in 'struct device' into one pointer. This work is not finished yet, but will probably be in the next cycle. - NUMA aware allocation in iommu-dma code - Support for r8a774a1 and r8a774c0 in the Renesas IOMMU driver - Scalable mode support for the Intel VT-d driver - PM runtime improvements for the ARM-SMMU driver - Support for the QCOM-SMMUv2 IOMMU hardware from Qualcom - Various smaller fixes and improvements * tag 'iommu-updates-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (78 commits) iommu: Check for iommu_ops == NULL in iommu_probe_device() ACPI/IORT: Don't call iommu_ops->add_device directly iommu/of: Don't call iommu_ops->add_device directly iommu: Consolitate ->add/remove_device() calls iommu/sysfs: Rename iommu_release_device() dmaengine: sh: rcar-dmac: Use device_iommu_mapped() xhci: Use device_iommu_mapped() powerpc/iommu: Use device_iommu_mapped() ACPI/IORT: Use device_iommu_mapped() iommu/of: Use device_iommu_mapped() driver core: Introduce device_iommu_mapped() function iommu/tegra: Use helper functions to access dev->iommu_fwspec iommu/qcom: Use helper functions to access dev->iommu_fwspec iommu/of: Use helper functions to access dev->iommu_fwspec iommu/mediatek: Use helper functions to access dev->iommu_fwspec iommu/ipmmu-vmsa: Use helper functions to access dev->iommu_fwspec iommu/dma: Use helper functions to access dev->iommu_fwspec iommu/arm-smmu: Use helper functions to access dev->iommu_fwspec ACPI/IORT: Use helper functions to access dev->iommu_fwspec iommu: Introduce wrappers around dev->iommu_fwspec ...
2019-01-01Merge tag 'dmaengine-4.21-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull dmaengine updates from Vinod Koul: "This includes a new driver, removes R-Mobile APE6 as it is no longer used, sprd cyclic dma support, last batch of dma_slave_config direction removal and random updates to bunch of drivers. Summary: - New driver for UniPhier MIO DMA controller - Remove R-Mobile APE6 support - Sprd driver updates and support for cyclic link-list - Remove dma_slave_config direction usage from rest of drivers - Minor updates to dmatest, dw-dmac, zynqmp and bcm dma drivers" * tag 'dmaengine-4.21-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (48 commits) dmaengine: qcom_hidma: convert to DEFINE_SHOW_ATTRIBUTE dmaengine: pxa: remove DBGFS_FUNC_DECL() dmaengine: mic_x100_dma: convert to DEFINE_SHOW_ATTRIBUTE dmaengine: amba-pl08x: convert to DEFINE_SHOW_ATTRIBUTE dmaengine: Documentation: Add documentation for multi chan testing dmaengine: dmatest: Add transfer_size parameter dmaengine: dmatest: Add alignment parameter dmaengine: dmatest: Use fixed point div to calculate iops dmaengine: dmatest: Add support for multi channel testing dmaengine: rcar-dmac: Document R8A774C0 bindings dt-bindings: dmaengine: usb-dmac: Add binding for r8a774c0 dmaengine: zynqmp_dma: replace spin_lock_bh with spin_lock_irqsave dmaengine: sprd: Add me as one of the module authors dmaengine: sprd: Support DMA 2-stage transfer mode dmaengine: sprd: Support DMA link-list cyclic callback dmaengine: sprd: Set cur_desc as NULL when free or terminate one dma channel dmaengine: sprd: Fix the last link-list configuration dmaengine: sprd: Get transfer residue depending on the transfer direction dmaengine: sprd: Remove direction usage from struct dma_slave_config dmaengine: dmatest: fix a small memory leak in dmatest_func() ...
2018-12-31Merge tag 'armsoc-drivers' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver updates from Olof Johansson: "Misc driver updates for platforms, many of them power related. - Rockchip adds power domain support for rk3066 and rk3188 - Amlogic adds a power measurement driver - Allwinner adds SRAM support for three platforms (F1C100, H5, A64 C1) - Wakeup and ti-sysc (platform bus) fixes for OMAP/DRA7 - Broadcom fixes suspend/resume with Thumb2 kernels, and improves stability of a handful of firmware/platform interfaces - PXA completes their conversion to dmaengine framework - Renesas does a bunch of PM cleanups across many platforms - Tegra adds support for suspend/resume on T186/T194, which includes some driver cleanups and addition of wake events - Tegra also adds a driver for memory controller (EMC) on Tegra2 - i.MX tweaks power domain bindings, and adds support for i.MX8MQ in GPC - Atmel adds identifiers and LPDDR2 support for a new SoC, SAM9X60 and misc cleanups across several platforms" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (73 commits) ARM: at91: add support in soc driver for new SAM9X60 ARM: at91: add support in soc driver for LPDDR2 SiP memory: omap-gpmc: Use of_node_name_eq for node name comparisons bus: ti-sysc: Check for no-reset and no-idle flags at the child level ARM: OMAP2+: Check also the first dts child for hwmod flags soc: amlogic: meson-clk-measure: Add missing REGMAP_MMIO dependency soc: imx: gpc: Increase GPC_CLK_MAX to 7 soc: renesas: rcar-sysc: Fix power domain control after system resume soc: renesas: rcar-sysc: Merge PM Domain registration and linking soc: renesas: rcar-sysc: Remove rcar_sysc_power_{down,up}() helpers soc: renesas: r8a77990-sysc: Fix initialization order of 3DG-{A,B} dt-bindings: sram: sunxi: Add compatible for the A64 SRAM C1 dt-bindings: sram: sunxi: Add bindings for the H5 with SRAM C1 dt-bindings: sram: Add Allwinner suniv F1C100s soc: sunxi: sram: Add support for the H5 SoC system control soc: sunxi: sram: Enable EMAC clock access for H3 variant soc: imx: gpcv2: add support for i.MX8MQ SoC soc: imx: gpcv2: move register access table to domain data soc: imx: gpcv2: prefix i.MX7 specific defines dmaengine: pxa: make the filter function internal ...
2018-12-31Merge branch 'topic/xilinx' into for-linusVinod Koul
2018-12-31Merge branch 'topic/uniphier' into for-linusVinod Koul
2018-12-31Merge branch 'topic/sprd' into for-linusVinod Koul
2018-12-31Merge branch 'topic/sh' into for-linusVinod Koul
2018-12-31Merge branch 'topic/sa11x0' into for-linusVinod Koul
2018-12-31Merge branch 'topic/mtk' into for-linusVinod Koul
2018-12-31Merge branch 'topic/imx' into for-linusVinod Koul
2018-12-31Merge branch 'topic/ep93xx' into for-linusVinod Koul
2018-12-31Merge branch 'topic/dw' into for-linusVinod Koul
2018-12-31Merge branch 'topic/dmatest' into for-linusVinod Koul
2018-12-31Merge branch 'topic/dirn_remove' into for-linusVinod Koul
2018-12-31Merge branch 'topic/coh' into for-linusVinod Koul
2018-12-31Merge branch 'topic/bcm' into for-linusVinod Koul
2018-12-20Merge branches 'iommu/fixes', 'arm/renesas', 'arm/mediatek', 'arm/tegra', ↵Joerg Roedel
'arm/omap', 'arm/smmu', 'x86/vt-d', 'x86/amd' and 'core' into next
2018-12-17dmaengine: sh: rcar-dmac: Use device_iommu_mapped()Joerg Roedel
Use Use device_iommu_mapped() to check if the device is already mapped by an IOMMU. Acked-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2018-12-17dmaengine: qcom_hidma: convert to DEFINE_SHOW_ATTRIBUTEYangtao Li
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Signed-off-by: Yangtao Li <tiny.windzz@gmail.com> Acked-by: Sinan Kaya <okaya@kernel.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-17dmaengine: pxa: remove DBGFS_FUNC_DECL()Yangtao Li
We already have the DEFINE_SHOW_ATTRIBUTE, There is no need to define such a macro, so remove DBGFS_FUNC_DECL. Signed-off-by: Yangtao Li <tiny.windzz@gmail.com> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-17dmaengine: mic_x100_dma: convert to DEFINE_SHOW_ATTRIBUTEYangtao Li
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Signed-off-by: Yangtao Li <tiny.windzz@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-17dmaengine: amba-pl08x: convert to DEFINE_SHOW_ATTRIBUTEYangtao Li
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Signed-off-by: Yangtao Li <tiny.windzz@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-17dmaengine: dmatest: Add transfer_size parameterSeraj Alijan
Existing transfer size "len" is either generated randomly or set to the size of test_buf_size. In some cases we need to explicitly specify a transfer size that is different from the buffer size and non aligned to test the target device's ability to handle unaligned transfers. This patch adds optional parameter "transfer_size" to allow setting explicit transfer size for dma transfers. Signed-off-by: Seraj Alijan <seraj.alijan@sondrel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-17dmaengine: dmatest: Add alignment parameterSeraj Alijan
Add parameter "alignment" to allow setting the address alignment manually. Having the ability to configure address alignment from user space adds new testing capabilities where different alignments can be configured for testing without having to modify the dma device alignment properties. If configured, the alignment value will override the device alignment property of the target device. Signed-off-by: Seraj Alijan <seraj.alijan@sondrel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-17dmaengine: dmatest: Use fixed point div to calculate iopsSeraj Alijan
Use fixed point division to calculate iops to prevent reporting 0 iops when operations last for longer than a second. Signed-off-by: Seraj Alijan <seraj.alijan@sondrel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-17dmaengine: dmatest: Add support for multi channel testingSeraj Alijan
Add support for running tests on multiple channels simultaneously as the driver currently limits to 1 channel per test run. This will add support for stress testing DMA controllers with multi channel capabilities. This is done by adding a callback function to the "channel" parameter that registers the requested channel prior to the "run" parameter being set to 1. Each time the "channel" parameter is populated with a new dma channel, a new test is appended to the thread queue. Once the "run" parameter is set to 1, the test will kick start all pending threads. Signed-off-by: Seraj Alijan <seraj.alijan@sondrel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-06dmaengine: dw: Fix FIFO size for Intel MerrifieldAndy Shevchenko
Intel Merrifield has a reduced size of FIFO used in iDMA 32-bit controller, i.e. 512 bytes instead of 1024. Fix this by partitioning it as 64 bytes per channel. Note, in the future we might switch to 'fifo-size' property instead of hard coded value. Fixes: 199244d69458 ("dmaengine: dw: add support of iDMA 32-bit hardware") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable@vger.kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-05dmaengine: zynqmp_dma: replace spin_lock_bh with spin_lock_irqsaveMichael Tretter
All device_prep_dma_* functions and device_issue_pending can be called from an interrupt context. As this includes hard IRQs, we must use spin_lock_irqsave() instead of spin_lock_bh() to access chan->lock. Signed-off-by: Michael Tretter <m.tretter@pengutronix.de> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-05dmaengine: sprd: Add me as one of the module authorsEric Long
Add me as one of the module authors. Signed-off-by: Eric Long <eric.long@spreadtrum.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-05dmaengine: sprd: Support DMA 2-stage transfer modeEric Long
The Spreadtrum DMA controller supports channel 2-stage tansfer mode, that means we can request 2 dma channels, one for source channel, and another one for destination channel. Once the source channel's transaction is done, it will trigger the destination channel's transaction automatically by hardware signal. Signed-off-by: Eric Long <eric.long@spreadtrum.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-05dmaengine: sprd: Support DMA link-list cyclic callbackEric Long
The Spreadtrum DMA link-list mode is always one cyclic transfer, so we should clear the SPRD_DMA_LLIST_END flag for the link-list configuration. Moreover add cyclic callback support for the cyclic transfer. Signed-off-by: Eric Long <eric.long@spreadtrum.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-05dmaengine: sprd: Set cur_desc as NULL when free or terminate one dma channelEric Long
It will be failed to start one new transfer if the channel started one none interrupt transfer before, since we will only set the schan->cur_desc as NULL depending on the transfer interrupt now. Thus we should set schan->cur_desc as NULL when free or terminate one dma channel to avoid this issue. Signed-off-by: Eric Long <eric.long@spreadtrum.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-05dmaengine: sprd: Fix the last link-list configurationEric Long
We will pass sglen as 0 configure the last link-list configuration when filling the descriptor, which will cause the incorrect link-list configuration. Thus we should check if the sglen is 0 to configure the correct link-list configuration. Signed-off-by: Eric Long <eric.long@spreadtrum.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-05dmaengine: sprd: Get transfer residue depending on the transfer directionEric Long
Add one field to save the transfer direction for struct sprd_dma_desc, which is used to get correct transfer residue depending on the transfer direction. [Baolin Wang adds one field to present the transfer direction] Signed-off-by: Eric Long <eric.long@spreadtrum.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-05dmaengine: sprd: Remove direction usage from struct dma_slave_configBaolin Wang
The direction field of struct dma_slave_config was marked deprecated, thus remove the usage. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-05dmaengine: cppi41: delete channel from pending list when stop channelBin Liu
The driver defines three states for a cppi channel. - idle: .chan_busy == 0 && not in .pending list - pending: .chan_busy == 0 && in .pending list - busy: .chan_busy == 1 && not in .pending list There are cases in which the cppi channel could be in the pending state when cppi41_dma_issue_pending() is called after cppi41_runtime_suspend() is called. cppi41_stop_chan() has a bug for these cases to set channels to idle state. It only checks the .chan_busy flag, but not the .pending list, then later when cppi41_runtime_resume() is called the channels in .pending list will be transitioned to busy state. Removing channels from the .pending list solves the problem. Fixes: 975faaeb9985 ("dma: cppi41: start tear down only if channel is busy") Cc: stable@vger.kernel.org # v3.15+ Signed-off-by: Bin Liu <b-liu@ti.com> Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
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