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2020-05-29spi: bcm2835: Enable shared interrupt supportMartin Sperl
bcm2711, Rasberry Pi 4's SoC, shares one interrupt for multiple instances of the bcm2835 SPI controller. So this enables shared interrupt support for them. The early bail out in the interrupt routine avoids messing with buffers of transfers being done by other means. Otherwise, the driver can handle receiving interrupts asserted by other controllers during an IRQ based transfer. Signed-off-by: Martin Sperl <kernel@martin.sperl.org> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20200528185805.28991-1-nsaenzjulienne@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2020-05-29spi: bcm2835: Implement shutdown callbackFlorian Fainelli
Make sure we clear the FIFOs, stop the block, disable the clock and release the DMA channel. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20200528190605.24850-1-f.fainelli@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-05-29blk-mq: drain I/O when all CPUs in a hctx are offlineMing Lei
Most of blk-mq drivers depend on managed IRQ's auto-affinity to setup up queue mapping. Thomas mentioned the following point[1]: "That was the constraint of managed interrupts from the very beginning: The driver/subsystem has to quiesce the interrupt line and the associated queue _before_ it gets shutdown in CPU unplug and not fiddle with it until it's restarted by the core when the CPU is plugged in again." However, current blk-mq implementation doesn't quiesce hw queue before the last CPU in the hctx is shutdown. Even worse, CPUHP_BLK_MQ_DEAD is a cpuhp state handled after the CPU is down, so there isn't any chance to quiesce the hctx before shutting down the CPU. Add new CPUHP_AP_BLK_MQ_ONLINE state to stop allocating from blk-mq hctxs where the last CPU goes away, and wait for completion of in-flight requests. This guarantees that there is no inflight I/O before shutting down the managed IRQ. Add a BLK_MQ_F_STACKING and set it for dm-rq and loop, so we don't need to wait for completion of in-flight requests from these drivers to avoid a potential dead-lock. It is safe to do this for stacking drivers as those do not use interrupts at all and their I/O completions are triggered by underlying devices I/O completion. [1] https://lore.kernel.org/linux-block/alpine.DEB.2.21.1904051331270.1802@nanos.tec.linutronix.de/ [hch: different retry mechanism, merged two patches, minor cleanups] Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-05-29blk-mq: add blk_mq_all_tag_iterMing Lei
Add a new blk_mq_all_tag_iter function to iterate over all allocated scheduler tags and driver tags. This is more flexible than the existing blk_mq_all_tag_busy_iter function as it allows the callers to do whatever they want on allocated request instead of being limited to started requests. It will be used to implement draining allocated requests on specified hctx in this patchset. [hch: switch from the two booleans to a more readable flags field and consolidate the tags iter functions] Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Daniel Wagner <dwagner@suse.de> Reviewed-by: Bart van Assche <bvanassche@acm.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-05-29blk-mq: open code __blk_mq_alloc_request in blk_mq_alloc_request_hctxChristoph Hellwig
blk_mq_alloc_request_hctx is only used for NVMeoF connect commands, so tailor it to the specific requirements, and don't bother the general fast path code with its special twinkles. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.de Reviewed-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-05-29blk-mq: use BLK_MQ_NO_TAG in more placesChristoph Hellwig
Replace various magic -1 constants for tags with BLK_MQ_NO_TAG. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-05-29blk-mq: rename BLK_MQ_TAG_FAIL to BLK_MQ_NO_TAGChristoph Hellwig
To prepare for wider use of this constant give it a more applicable name. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-05-29blk-mq: move more request initialization to blk_mq_rq_ctx_initChristoph Hellwig
Don't split request initialization between __blk_mq_alloc_request and blk_mq_rq_ctx_init. Also remove the op argument as it can be derived from the blk_mq_alloc_data structure. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-05-29blk-mq: simplify the blk_mq_get_request calling conventionChristoph Hellwig
The bio argument is entirely unused, and the request_queue can be passed through the alloc_data, given that it needs to be filled out for the low-level tag allocation anyway. Also rename the function to __blk_mq_alloc_request as the switch between get and alloc in the call chains is rather confusing. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-05-29blk-mq: remove the bio argument to ->prepare_requestChristoph Hellwig
None of the I/O schedulers actually needs it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-05-29nvme: force complete cancelled requestsKeith Busch
Use blk_mq_foce_complete_rq() to bypass fake timeout error injection so that request reclaim may proceed. Signed-off-by: Keith Busch <kbusch@kernel.org> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-05-29blk-mq: blk-mq: provide forced completion methodKeith Busch
Drivers may need to bypass error injection for error recovery. Rename __blk_mq_complete_request() to blk_mq_force_complete_rq() and export that function so drivers may skip potential fake timeouts after they've reclaimed lost requests. Signed-off-by: Keith Busch <kbusch@kernel.org> Reviewed-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-05-29regulator: core: Add regulator bypass trace pointsCharles Keepax
Add new trace points for the start and end of enabling bypass on a regulator, to allow monitoring of when regulators are moved into bypass and how long that takes. Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20200529152216.9671-1-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-05-29cpuidle: Fix three reference count leaksQiushi Wu
kobject_init_and_add() takes reference even when it fails. If this function returns an error, kobject_put() must be called to properly clean up the memory associated with the object. Previous commit "b8eb718348b8" fixed a similar problem. Signed-off-by: Qiushi Wu <wu000273@umn.edu> [ rjw: Subject ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-05-29PCI: vmd: Filter resource type bits from shadow registerJon Derrick
Versions of VMD with the Host Physical Address shadow register use this register to calculate the bus address offset needed to do guest passthrough of the domain. This register shadows the Host Physical Address registers including the resource type bits. After calculating the offset, the extra resource type bits lead to the VMD resources being over-provisioned at the front and under-provisioned at the back. Example: pci 10000:80:02.0: reg 0x10: [mem 0xf801fffc-0xf803fffb 64bit] Expected: pci 10000:80:02.0: reg 0x10: [mem 0xf8020000-0xf803ffff 64bit] If other devices are mapped in the over-provisioned front, it could lead to resource conflict issues with VMD or those devices. Link: https://lore.kernel.org/r/20200528030240.16024-3-jonathan.derrick@intel.com Fixes: a1a30170138c9 ("PCI: vmd: Fix shadow offsets to reflect spec changes") Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2020-05-29PM: runtime: Replace pm_runtime_callbacks_present()Rafael J. Wysocki
The name of pm_runtime_callbacks_present() is confusing, because it suggests that the device has PM-runtime callbacks if 'true' is returned by that function, but in fact that may not be the case, so replace it with pm_runtime_has_no_callbacks() which is not ambiguous. No functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-05-29ASoC: SOF: Intel: Baytrail: fix 'defined but not used' warningsPierre-Louis Bossart
With the allmodconfig option, CONFIG_SND_SOC_SOF_BAYTRAIL is disabled due to mutual exclusion with the legacy driver. This generates 'defined by not used' warnings. suspend/resume/remove are only supported for Baytrail for now, so move the code under the CONFIG_SND_SOC_SOF_BAYTRAIL checks. Fixes: ddcccd543f5d ("ASoC: SOF: Intel: byt: Add PM callbacks") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200529150408.17236-1-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-05-29Subject: [PATCH v2] ASoC: soc-pcm: fix BE dai not hw_free and shutdown ↵朱灿灿
during mixer update FE state is SND_SOC_DPCM_STATE_PREPARE now, BE1 is used by FE. Later when new BE2 is added to FE by mixer update, it will call dpcm_run_update_startup() to update BE2's state, but unfortunately BE2 .prepare() meets error, it will disconnect all non started BE. This make BE1 dai skip .hw_free() and .shutdown(), and the BE1 users will never decrease to zero. Signed-off-by: zhucancan <zhucancan@vivo.com> Link: https://lore.kernel.org/r/ALMAWwB5CP9aAcKXCU5FzqqF.1.1590747164172.Hmail.zhucancan@vivo.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-05-29xen/pci: Get rid of verbose_request and use dev_dbg() insteadBoris Ostrovsky
Information printed under verbose_request is clearly used for debugging only. Remove it and use dev_dbg() instead. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Link: https://lore.kernel.org/r/1590719092-8578-1-git-send-email-boris.ostrovsky@oracle.com Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2020-05-29rt2800: enable MFP support unconditionallyRui Salvaterra
This gives us WPA3 support out of the box without having to manually disable hardware crypto. The driver will fall back to software crypto if the connection requires management frame protection. Suggested-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com> Acked-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20200525134906.1672-1-rsalvaterra@gmail.com
2020-05-29dt-bindings: usb: qcom,dwc3: Introduce interconnect properties for Qualcomm ↵Sandeep Maheswaram
DWC3 driver Add documentation for the interconnects and interconnect-names properties for USB. Reviewed-by: Stephen Boyd <swboyd@chromium.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Sandeep Maheswaram <sanm@codeaurora.org> Signed-off-by: Rob Herring <robh@kernel.org>
2020-05-29iommu/amd: Remove redundant devid checksJoerg Roedel
Checking the return value of get_device_id() in a code-path which has already done check_device() is not needed, as check_device() does the same check and bails out if it fails. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Link: https://lore.kernel.org/r/20200527115313.7426-11-joro@8bytes.org
2020-05-29iommu/amd: Store dev_data as device iommu private dataJoerg Roedel
Do not use dev->archdata.iommu anymore and switch to using the private per-device pointer provided by the IOMMU core code. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Link: https://lore.kernel.org/r/20200527115313.7426-10-joro@8bytes.org
2020-05-29iommu/amd: Merge private header filesJoerg Roedel
Merge amd_iommu_proto.h into amd_iommu.h. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Link: https://lore.kernel.org/r/20200527115313.7426-9-joro@8bytes.org
2020-05-29iommu/amd: Remove PD_DMA_OPS_MASKJoerg Roedel
This is covered by IOMMU_DOMAIN_DMA from the IOMMU core code already, so remove it. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Link: https://lore.kernel.org/r/20200527115313.7426-8-joro@8bytes.org
2020-05-29iommu/amd: Consolidate domain allocation/freeingJoerg Roedel
Merge the allocation code paths of DMA and UNMANAGED domains and remove code duplication. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Link: https://lore.kernel.org/r/20200527115313.7426-7-joro@8bytes.org
2020-05-29iommu/amd: Free page-table in protection_domain_free()Joerg Roedel
Align release of the page-table with the place where it is allocated. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Link: https://lore.kernel.org/r/20200527115313.7426-6-joro@8bytes.org
2020-05-29iommu/amd: Allocate page-table in protection_domain_init()Joerg Roedel
Consolidate the allocation of the domain page-table in one place. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Link: https://lore.kernel.org/r/20200527115313.7426-5-joro@8bytes.org
2020-05-29iommu/amd: Let free_pagetable() not rely on domain->pt_rootJoerg Roedel
Use 'struct domain_pgtable' instead to free_pagetable(). This solves the problem that amd_iommu_domain_direct_map() needs to restore domain->pt_root after the device table has been updated just to make free_pagetable release the domain page-table. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Link: https://lore.kernel.org/r/20200527115313.7426-4-joro@8bytes.org
2020-05-29iommu/amd: Unexport get_dev_data()Joerg Roedel
This function is internal to the AMD IOMMU driver and only exported because the amd_iommu_v2 modules calls it. But the reason it is called from there could better be handled by amd_iommu_is_attach_deferred(). So unexport get_dev_data() and use amd_iommu_is_attach_deferred() instead. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Link: https://lore.kernel.org/r/20200527115313.7426-3-joro@8bytes.org
2020-05-29Merge tag 'v5.7-rc7' into x86/amdJoerg Roedel
Linux 5.7-rc7
2020-05-29vmci_host: get rid of pointless access_ok()Al Viro
get_user_pages_fast() doesn't need the caller to check that. NB: reachable only from ioctl(2) and only under USER_DS Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29hfi1: get rid of pointless access_ok()Al Viro
pin_user_pages_fast() doesn't need that from its caller. NB: only reachable from ->ioctl(), and only under USER_DS Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29usb: get rid of pointless access_ok() callsAl Viro
in all affected cases addresses are passed only to copy_from()_user or copy_to_user(). Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29lpfc_debugfs: get rid of pointless access_ok()Al Viro
No, you do NOT need to "protect copy from user" that way. Incidentally, your userland ABI stinks. I understand that you wanted to accept "reset" and "reset\n" as equivalent, but I suspect that accepting "reset this, you !@^!@!" had been an accident. Nothing to do about that now - it is a userland ABI... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29efi_test: get rid of pointless access_ok()Al Viro
really, people - get_user(), copy_from_user(), memdup_user(), etc. all fail if access_ok() does. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29drm_read(): get rid of pointless access_ok()Al Viro
address is passed only to copy_to_user() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29via-pmu: don't bother with access_ok()Al Viro
we are using copy_to_user() for actual copying Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29drivers/crypto/ccp/sev-dev.c: get rid of pointless access_ok()Al Viro
Contrary to the comments, those do *NOT* verify anything about writability of memory, etc. In all cases addresses are passed only to copy_to_user(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29omapfb: get rid of pointless access_ok() callsAl Viro
address is passed only to copy_to_user() Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29amifb: get rid of pointless access_ok() callsAl Viro
addresses passed only to get_user() and put_user() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29drivers/fpga/dfl-afu-dma-region.c: get rid of pointless access_ok()Al Viro
Address is passed to get_user_pages_fast(), which does access_ok(). NB: this is called only from ->ioctl(), and only under USER_DS. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29drivers/fpga/dfl-fme-pr.c: get rid of pointless access_ok()Al Viro
followed by copy_from_user() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29cm4000_cs.c cmm_ioctl(): get rid of pointless access_ok()Al Viro
copy_to_user()/copy_from_user() for everything Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29nvram: drop useless access_ok()Al Viro
we are using copy_to_user()/memdup_user() anyway Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29n_hdlc_tty_read(): remove pointless access_ok()Al Viro
only copy_to_user() is done to the address in question Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29tomoyo_write_control(): get rid of pointless access_ok()Al Viro
address is passed only to get_user() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-05-29gfs2: Even more gfs2_find_jhead fixesAndreas Gruenbacher
Fix several issues in the previous gfs2_find_jhead fix: * When updating @blocks_submitted, @block refers to the first block block not submitted yet, not the last block submitted, so fix an off-by-one error. * We want to ensure that @blocks_submitted is far enough ahead of @blocks_read to guarantee that there is in-flight I/O. Otherwise, we'll eventually end up waiting for pages that haven't been submitted, yet. * It's much easier to compare the number of blocks added with the number of blocks submitted to limit the maximum bio size. * Even with bio chaining, we can keep adding blocks until we reach the maximum bio size, as long as we stop at a page boundary. This simplifies the logic. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Reviewed-by: Bob Peterson <rpeterso@redhat.com>
2020-05-29spi: dw: Use regset32 DebugFS method to create regdump fileSerge Semin
DebugFS kernel interface provides a dedicated method to create the registers dump file. Use it instead of creating a generic DebugFS file with manually written read callback function. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru> Cc: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru> Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Feng Tang <feng.tang@intel.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: linux-mips@vger.kernel.org Cc: devicetree@vger.kernel.org Link: https://lore.kernel.org/r/20200529131205.31838-16-Sergey.Semin@baikalelectronics.ru Signed-off-by: Mark Brown <broonie@kernel.org>
2020-05-29spi: dw: Add DMA support to the DW SPI MMIO driverSerge Semin
Since the common code in the spi-dw-dma.c driver is ready to be used by the MMIO driver and now provides a method to generically (on any DT or ACPI-based platforms) retrieve the Tx/Rx DMA channel handlers, we can use it and a set of the common DW SPI DMA callbacks to enable DMA at least for generic "snps,dw-apb-ssi" and "snps,dwc-ssi-1.01a" devices. Co-developed-by: Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru> Co-developed-by: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru> Signed-off-by: Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru> Signed-off-by: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Feng Tang <feng.tang@intel.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: linux-mips@vger.kernel.org Cc: devicetree@vger.kernel.org Link: https://lore.kernel.org/r/20200529131205.31838-15-Sergey.Semin@baikalelectronics.ru Signed-off-by: Mark Brown <broonie@kernel.org>
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