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2018-09-11dmaengine: dma-jz4780: Simplify jz4780_dma_desc_residue()Daniel Silsby1-10/+5
Simple cleanup, no changes to actual logic here. Signed-off-by: Daniel Silsby <dansilsby@gmail.com> Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: dma-jz4780: Add missing residue DTC maskDaniel Silsby1-1/+2
The 'dtc' word in jz DMA descriptors contains two fields: The lowest 24 bits are the transfer count, and upper 8 bits are the DOA offset to next descriptor. The upper 8 bits are now correctly masked off when computing residue in jz4780_dma_desc_residue(). Note that reads of the DTCn hardware reg are automatically masked this way. Signed-off-by: Daniel Silsby <dansilsby@gmail.com> Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: dma-jz4780: Enable Fast DMA to the AICPaul Cercueil1-2/+3
With the fast DMA bit set, the DMA will transfer twice as much data per clock period to the AIC, so there is little point not to set it. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: dma-jz4780: Add support for the JZ4725B SoCPaul Cercueil1-3/+20
The JZ4725B has one DMA core starring six DMA channels. As for the JZ4770, each DMA channel's clock can be enabled with a register write, the difference here being that once started, it is not possible to turn it off. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: dma-jz4780: Add support for the JZ4740 SoCPaul Cercueil1-0/+6
The JZ4740 SoC has a single DMA core starring six DMA channels. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: dma-jz4780: Add support for the JZ4770 SoCPaul Cercueil1-7/+54
The JZ4770 SoC has two DMA cores, each one featuring six DMA channels. The major change is that each channel's clock can be enabled or disabled through register writes. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: dma-jz4780: Don't depend on MACH_JZ4780Paul Cercueil1-1/+1
If we make this driver depend on MACH_JZ4780, that means it can be enabled only if we're building a kernel specially crafted for a JZ4780-based board, while most GNU/Linux distributions will want one generic MIPS kernel that works on multiple boards. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: dma-jz4780: Use 4-word descriptorsPaul Cercueil1-12/+9
The only information we use in the 8-word version of the hardware DMA descriptor that is not present in the 4-word version is the transfer type, aka. the ID of the source or recipient device. Since the transfer type will never change for a DMA channel in use, we can just set it once for all in the corresponding DMA register before starting any transfer. This has several benefits: * the driver will handle twice as many hardware DMA descriptors; * the driver is closer to support the JZ4740, which only supports 4-word hardware DMA descriptors; * the JZ4770 SoC needs the transfer type to be set in the corresponding DMA register anyway, even if 8-word descriptors are in use. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: dma-jz4780: Separate chan/ctrl registersPaul Cercueil1-41/+71
The register area of the JZ4780 DMA core can be split into different sections for different purposes: * one set of registers is used to perform actions at the DMA core level, that will generally affect all channels; * one set of registers per DMA channel, to perform actions at the DMA channel level, that will only affect the channel in question. The problem rises when trying to support new versions of the JZ47xx Ingenic SoC. For instance, the JZ4770 has two DMA cores, each one with six DMA channels, and the register sets are interleaved: <DMA0 chan regs> <DMA1 chan regs> <DMA0 ctrl regs> <DMA1 ctrl regs> By using one memory resource for the channel-specific registers and one memory resource for the core-specific registers, we can support the JZ4770, by initializing the driver once per DMA core with different addresses. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: dma-jz4780: Avoid hardcoding number of channelsPaul Cercueil1-9/+25
As part of the work to support various other Ingenic JZ47xx SoC versions, which don't feature the same number of DMA channels per core, we now deduce the number of DMA channels available from the devicetree compatible string. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: dma-jz4780: Return error if not probed from DTPaul Cercueil1-0/+5
The driver calls clk_get() with the clock name set to NULL, which means that the driver could only work when probed from devicetree. From now on, we explicitly require the driver to be probed from devicetree. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: fsl-edma: add ColdFire mcf5441x edma supportAngelo Dureghello4-4/+349
This patch adds support for ColdFire mcf5441x-family edma module. The ColdFire edma module is slightly different from fsl-edma, so a new driver is added. But most of the code is common between fsl-edma and mcf-edma so it has been collected into a separate common module fsl-edma-common (patch 1/3). Signed-off-by: Angelo Dureghello <angelo@sysam.it> Tested-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: fsl-edma: fix macrosAngelo Dureghello1-28/+22
This patch fixes macros to use BIT() and GENMASK(), removing also some unneeded. Signed-off-by: Angelo Dureghello <angelo@sysam.it> Tested-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: fsl-edma: add edma version and configurable registersAngelo Dureghello3-74/+126
This patch adds configurable registers (using __iomem addresses) to allow the use of fsl-edma-common code with slightly different edma module versions, as Vybrid (v1) and ColdFire (v2) are. Signed-off-by: Angelo Dureghello <angelo@sysam.it> Tested-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: fsl-edma: extract common fsl-edma code (no changes in behavior intended)Angelo Dureghello4-697/+795
This patch adds a new fsl-edma-common module to allow new mcf-edma module code to use most of the fsl-edma code. Signed-off-by: Angelo Dureghello <angelo@sysam.it> Tested-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: pxa: fix semicolon.cocci warningskbuild test robot1-1/+1
Remove unneeded semicolon. Generated by: scripts/coccinelle/misc/semicolon.cocci Signed-off-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-11dmaengine: Revert "dmaengine: add COMPILE_TEST for the drivers"Vinod Koul1-2/+2
We have build failures attributed to turning on COMPILE_TEST, so revert commit 90082cd397aeb: ("dmaengine: add COMPILE_TEST for the drivers") while we fix these. Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-03dmaengine: sprd: Support DMA link-list modeEric Long1-7/+74
The Spreadtrum DMA can support the link-list transaction mode, which means DMA controller can do transaction one by one automatically once we linked these transaction by link-list register. 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>
2018-09-03dmaengine: at_xdmac: move spin_lock_bh to spin_lock in taskletBarry Song1-2/+2
as you are already in a tasklet, it is unnecessary to call spin_lock_bh. Signed-off-by: Barry Song <21cnbao@gmail.com> Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-03dmaengine: mv_xor: move spin_lock_bh to spin_lock in taskletBarry Song1-2/+2
as you are already in a tasklet, it is unnecessary to call spin_lock_bh. Signed-off-by: Barry Song <21cnbao@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-09-03dmaengine: fsldma: move spin_lock_bh to spin_lock in taskletBarry Song1-2/+2
as you are already in a tasklet, it is unnecessary to call spin_lock_bh. Signed-off-by: Barry Song <21cnbao@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-29dmaengine: use SPDX identifier for Renesas driversWolfram Sang9-38/+9
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-29dmaengine: dw: Add alternative ACPI HIDs for Cherry Trail DMA controllersHans de Goede1-0/+2
Bay and Cherry Trail DSTDs represent a different set of devices depending on which OS the device think it is booting. One set of decices for Windows and another set of devices for Android which targets the Android-x86 Linux kernel fork (which e.g. used to have its own display driver instead of using the i915 driver). Which set of devices we are actually going to get is out of our control, this is controlled by the ACPI OSID variable, which gets either set through an EFI setup option, or sometimes is autodetected. So we need to support both. This commit adds support for the 80862286 and 808622C0 ACPI HIDs which we get for the first resp. second DMA controller on Cherry Trail devices when OSID is set to Android. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-29dmaengine: add COMPILE_TEST for the driversHuang Shijie1-2/+2
We can do the compiling test with COMPILE_TEST. This patch adds the COMPILE_TEST for the drivers. Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-29dmaengine: mxs-dma: use dmaenginem_async_device_register to simplify the codeHuang Shijie1-2/+1
Use dmaenginem_async_device_register to simplify the code: remove dma_async_device_unregister. Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-29dmaengine: pxa_dma: use dmaenginem_async_device_register to simplify the codeHuang Shijie1-2/+1
Use dmaenginem_async_device_register to simplify the code: remove dma_async_device_unregister. Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-29dmaengine: dma-jz4780: use dmaenginem_async_device_register to simplify the codeHuang Shijie1-6/+2
Use dmaenginem_async_device_register to simplify the code: remove dma_async_device_unregister. remove label err_unregister_dev Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-29dmaengine: ste_dma40: use dmaenginem_async_device_register to simplify the codeHuang Shijie1-9/+5
Use dmaenginem_async_device_register to simplify the code: remove dma_async_device_unregister. remove label unregister_slave, unregister_memcpy Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-29dmaengine: mmp_tdma: use dmaenginem_async_device_register to simplify the codeHuang Shijie1-5/+2
Use dmaenginem_async_device_register to simplify the code: remove dma_async_device_unregister. return error if it fails. Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-29dmaengine: stm32-mdma: use dmaenginem_async_device_register to simplify the codeHuang Shijie1-3/+1
Use dmaenginem_async_device_register to simplify the code: remove dma_async_device_unregister. Acked-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-29dmaengine: dw-axi-dmac: use dmaenginem_async_device_register to simplify the codeHuang Shijie1-3/+1
Use dmaenginem_async_device_register to simplify the code: remove dma_async_device_unregister. Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-29dmaengine: st_fdma: use dmaenginem_async_device_register to simplify the codeHuang Shijie1-5/+2
Use dmaenginem_async_device_register to simplify the code: remove dma_async_device_unregister. remove label err_dma_dev Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-28dmaengine: Convert to using %pOFn instead of device_node.nameRob Herring1-2/+2
In preparation to remove the node name pointer from struct device_node, convert printf users to use the %pOFn format specifier. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-27dmaengine: mic_x100_dma: use devm_kzalloc to fix an issueHuang Shijie1-3/+1
The following patch introduced an issue. commit f6206f00d8c5 ("dmaengine: mic_x100_dma: use the new helper to simplify the code") This issue is : kfree(mic_dma_dev) ..... dma_async_device_unregister(mic_dma_dev->device); Free the memory, and use it again. So use devm_kzalloc to allocate mic_dma_dev to fix it. When the Devres try to release the resources, it will call release at the following order: dma_async_device_unregister(mic_dma_dev->device); ..... kfree(mic_dma_dev) Fixes: f6206f00d8c5 ("dmaengine: mic_x100_dma: use the new helper to simplify the code") Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-08-26Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-daxLinus Torvalds1-16/+7
Pull IDA updates from Matthew Wilcox: "A better IDA API: id = ida_alloc(ida, GFP_xxx); ida_free(ida, id); rather than the cumbersome ida_simple_get(), ida_simple_remove(). The new IDA API is similar to ida_simple_get() but better named. The internal restructuring of the IDA code removes the bitmap preallocation nonsense. I hope the net -200 lines of code is convincing" * 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax: (29 commits) ida: Change ida_get_new_above to return the id ida: Remove old API test_ida: check_ida_destroy and check_ida_alloc test_ida: Convert check_ida_conv to new API test_ida: Move ida_check_max test_ida: Move ida_check_leaf idr-test: Convert ida_check_nomem to new API ida: Start new test_ida module target/iscsi: Allocate session IDs from an IDA iscsi target: fix session creation failure handling drm/vmwgfx: Convert to new IDA API dmaengine: Convert to new IDA API ppc: Convert vas ID allocation to new IDA API media: Convert entity ID allocation to new IDA API ppc: Convert mmu context allocation to new IDA API Convert net_namespace to new IDA API cb710: Convert to new IDA API rsxx: Convert to new IDA API osd: Convert to new IDA API sd: Convert to new IDA API ...
2018-08-21dmaengine: Convert to new IDA APIMatthew Wilcox1-16/+7
Simpler and shorter code. Signed-off-by: Matthew Wilcox <willy@infradead.org> Acked-by: Vinod Koul <vkoul@kernel.org>
2018-08-18Merge tag 'dmaengine-4.19-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds17-300/+1532
Pull DMAengine updates from Vinod Koul: "This round brings couple of framework changes, a new driver and usual driver updates: - new managed helper for dmaengine framework registration - split dmaengine pause capability to pause and resume and allow drivers to report that individually - update dma_request_chan_by_mask() to handle deferred probing - move imx-sdma to use virt-dma - new driver for Actions Semi Owl family S900 controller - minor updates to intel, renesas, mv_xor, pl330 etc" * tag 'dmaengine-4.19-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (46 commits) dmaengine: Add Actions Semi Owl family S900 DMA driver dt-bindings: dmaengine: Add binding for Actions Semi Owl SoCs dmaengine: sh: rcar-dmac: Should not stop the DMAC by rcar_dmac_sync_tcr() dmaengine: mic_x100_dma: use the new helper to simplify the code dmaengine: add a new helper dmaenginem_async_device_register dmaengine: imx-sdma: add memcpy interface dmaengine: imx-sdma: add SDMA_BD_MAX_CNT to replace '0xffff' dmaengine: dma_request_chan_by_mask() to handle deferred probing dmaengine: pl330: fix irq race with terminate_all dmaengine: Revert "dmaengine: mv_xor_v2: enable COMPILE_TEST" dmaengine: mv_xor_v2: use {lower,upper}_32_bits to configure HW descriptor address dmaengine: mv_xor_v2: enable COMPILE_TEST dmaengine: mv_xor_v2: move unmap to before callback dmaengine: mv_xor_v2: convert callback to helper function dmaengine: mv_xor_v2: kill the tasklets upon exit dmaengine: mv_xor_v2: explicitly freeup irq dmaengine: sh: rcar-dmac: Add dma_pause operation dmaengine: sh: rcar-dmac: add a new function to clear CHCR.DE with barrier dmaengine: idma64: Support dmaengine_terminate_sync() dmaengine: hsu: Support dmaengine_terminate_sync() ...
2018-08-18Merge tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds2-0/+2
Pull char/misc driver updates from Greg KH: "Here is the bit set of char/misc drivers for 4.19-rc1 There is a lot here, much more than normal, seems like everyone is writing new driver subsystems these days... Anyway, major things here are: - new FSI driver subsystem, yet-another-powerpc low-level hardware bus - gnss, finally an in-kernel GPS subsystem to try to tame all of the crazy out-of-tree drivers that have been floating around for years, combined with some really hacky userspace implementations. This is only for GNSS receivers, but you have to start somewhere, and this is great to see. Other than that, there are new slimbus drivers, new coresight drivers, new fpga drivers, and loads of DT bindings for all of these and existing drivers. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (255 commits) android: binder: Rate-limit debug and userspace triggered err msgs fsi: sbefifo: Bump max command length fsi: scom: Fix NULL dereference misc: mic: SCIF Fix scif_get_new_port() error handling misc: cxl: changed asterisk position genwqe: card_base: Use true and false for boolean values misc: eeprom: assignment outside the if statement uio: potential double frees if __uio_register_device() fails eeprom: idt_89hpesx: clean up an error pointer vs NULL inconsistency misc: ti-st: Fix memory leak in the error path of probe() android: binder: Show extra_buffers_size in trace firmware: vpd: Fix section enabled flag on vpd_section_destroy platform: goldfish: Retire pdev_bus goldfish: Use dedicated macros instead of manual bit shifting goldfish: Add missing includes to goldfish.h mux: adgs1408: new driver for Analog Devices ADGS1408/1409 mux dt-bindings: mux: add adi,adgs1408 Drivers: hv: vmbus: Cleanup synic memory free path Drivers: hv: vmbus: Remove use of slow_virt_to_phys() Drivers: hv: vmbus: Reset the channel callback in vmbus_onoffer_rescind() ...
2018-08-17Merge branch 'topic/pl330' into for-linusVinod Koul1-6/+6
2018-08-17Merge branch 'topic/imx' into for-linusVinod Koul2-199/+380
2018-08-17Merge branch 'topic/xilinx' into for-linusVinod Koul1-0/+22
2018-08-17Merge branch 'topic/ste' into for-linusVinod Koul3-8/+19
2018-08-17Merge branch 'topic/renesas' into for-linusVinod Koul1-66/+46
2018-08-17Merge branch 'topic/owl' into for-linusVinod Koul3-0/+980
2018-08-17Merge branch 'topic/nbpfaxi' into for-linusVinod Koul1-0/+1
2018-08-17Merge branch 'topic/mv_xor' into for-linusVinod Koul1-6/+10
2018-08-17Merge branch 'topic/ioat' into for-linusVinod Koul1-0/+6
2018-08-17Merge branch 'topic/intel' into for-linusVinod Koul2-0/+16
2018-08-09Merge branch 'asoc-4.19' into asoc-nextMark Brown1-1/+14
2018-08-09dmaengine: Add Actions Semi Owl family S900 DMA driverManivannan Sadhasivam3-0/+980
Add Actions Semi Owl family S900 DMA driver. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
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