linux.git/drivers/video/fbdev/core, branch v5.18-rc2 Linux kernel source tree fbdev: Fix unregistering of framebuffers without device 2022-04-06T19:12:28+00:00 Thomas Zimmermann tzimmermann@suse.de 2022-04-04T19:44:02+00:00 0f525289ff0ddeb380813bd81e0f9bdaaa1c9078 OF framebuffers do not have an underlying device in the Linux device hierarchy. Do a regular unregister call instead of hot unplugging such a non-existing device. Fixes a NULL dereference. An example error message on ppc64le is shown below. BUG: Kernel NULL pointer dereference on read at 0x00000060 Faulting instruction address: 0xc00000000080dfa4 Oops: Kernel access of bad area, sig: 11 [#1] LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries [...] CPU: 2 PID: 139 Comm: systemd-udevd Not tainted 5.17.0-ae085d7f9365 #1 NIP: c00000000080dfa4 LR: c00000000080df9c CTR: c000000000797430 REGS: c000000004132fe0 TRAP: 0300 Not tainted (5.17.0-ae085d7f9365) MSR: 8000000002009033 <SF,VEC,EE,ME,IR,DR,RI,LE> CR: 28228282 XER: 20000000 CFAR: c00000000000c80c DAR: 0000000000000060 DSISR: 40000000 IRQMASK: 0 GPR00: c00000000080df9c c000000004133280 c00000000169d200 0000000000000029 GPR04: 00000000ffffefff c000000004132f90 c000000004132f88 0000000000000000 GPR08: c0000000015658f8 c0000000015cd200 c0000000014f57d0 0000000048228283 GPR12: 0000000000000000 c00000003fffe300 0000000020000000 0000000000000000 GPR16: 0000000000000000 0000000113fc4a40 0000000000000005 0000000113fcfb80 GPR20: 000001000f7283b0 0000000000000000 c000000000e4a588 c000000000e4a5b0 GPR24: 0000000000000001 00000000000a0000 c008000000db0168 c0000000021f6ec0 GPR28: c0000000016d65a8 c000000004b36460 0000000000000000 c0000000016d64b0 NIP [c00000000080dfa4] do_remove_conflicting_framebuffers+0x184/0x1d0 [c000000004133280] [c00000000080df9c] do_remove_conflicting_framebuffers+0x17c/0x1d0 (unreliable) [c000000004133350] [c00000000080e4d0] remove_conflicting_framebuffers+0x60/0x150 [c0000000041333a0] [c00000000080e6f4] remove_conflicting_pci_framebuffers+0x134/0x1b0 [c000000004133450] [c008000000e70438] drm_aperture_remove_conflicting_pci_framebuffers+0x90/0x100 [drm] [c000000004133490] [c008000000da0ce4] bochs_pci_probe+0x6c/0xa64 [bochs] [...] [c000000004133db0] [c00000000002aaa0] system_call_exception+0x170/0x2d0 [c000000004133e10] [c00000000000c3cc] system_call_common+0xec/0x250 The bug [1] was introduced by commit 27599aacbaef ("fbdev: Hot-unplug firmware fb devices on forced removal"). Most firmware framebuffers have an underlying platform device, which can be hot-unplugged before loading the native graphics driver. OF framebuffers do not (yet) have that device. Fix the code by unregistering the framebuffer as before without a hot unplug. Tested with 5.17 on qemu ppc64le emulation. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Fixes: 27599aacbaef ("fbdev: Hot-unplug firmware fb devices on forced removal") Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Tested-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Cc: Zack Rusin <zackr@vmware.com> Cc: Javier Martinez Canillas <javierm@redhat.com> Cc: Hans de Goede <hdegoede@redhat.com> Cc: stable@vger.kernel.org # v5.11+ Cc: Helge Deller <deller@gmx.de> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Zheyu Ma <zheyuma97@gmail.com> Cc: Xiyu Yang <xiyuyang19@fudan.edu.cn> Cc: Zhen Lei <thunder.leizhen@huawei.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Cc: Guenter Roeck <linux@roeck-us.net> Cc: linux-fbdev@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Link: https://lore.kernel.org/all/YkHXO6LGHAN0p1pq@debian/ # [1] Link: https://patchwork.freedesktop.org/patch/msgid/20220404194402.29974-1-tzimmermann@suse.de 
OF framebuffers do not have an underlying device in the Linux
device hierarchy. Do a regular unregister call instead of hot
unplugging such a non-existing device. Fixes a NULL dereference.
An example error message on ppc64le is shown below.

  BUG: Kernel NULL pointer dereference on read at 0x00000060
  Faulting instruction address: 0xc00000000080dfa4
  Oops: Kernel access of bad area, sig: 11 [#1]
  LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries
  [...]
  CPU: 2 PID: 139 Comm: systemd-udevd Not tainted 5.17.0-ae085d7f9365 #1
  NIP:  c00000000080dfa4 LR: c00000000080df9c CTR: c000000000797430
  REGS: c000000004132fe0 TRAP: 0300   Not tainted  (5.17.0-ae085d7f9365)
  MSR:  8000000002009033 <SF,VEC,EE,ME,IR,DR,RI,LE>  CR: 28228282  XER: 20000000
  CFAR: c00000000000c80c DAR: 0000000000000060 DSISR: 40000000 IRQMASK: 0
  GPR00: c00000000080df9c c000000004133280 c00000000169d200 0000000000000029
  GPR04: 00000000ffffefff c000000004132f90 c000000004132f88 0000000000000000
  GPR08: c0000000015658f8 c0000000015cd200 c0000000014f57d0 0000000048228283
  GPR12: 0000000000000000 c00000003fffe300 0000000020000000 0000000000000000
  GPR16: 0000000000000000 0000000113fc4a40 0000000000000005 0000000113fcfb80
  GPR20: 000001000f7283b0 0000000000000000 c000000000e4a588 c000000000e4a5b0
  GPR24: 0000000000000001 00000000000a0000 c008000000db0168 c0000000021f6ec0
  GPR28: c0000000016d65a8 c000000004b36460 0000000000000000 c0000000016d64b0
  NIP [c00000000080dfa4] do_remove_conflicting_framebuffers+0x184/0x1d0
  [c000000004133280] [c00000000080df9c] do_remove_conflicting_framebuffers+0x17c/0x1d0 (unreliable)
  [c000000004133350] [c00000000080e4d0] remove_conflicting_framebuffers+0x60/0x150
  [c0000000041333a0] [c00000000080e6f4] remove_conflicting_pci_framebuffers+0x134/0x1b0
  [c000000004133450] [c008000000e70438] drm_aperture_remove_conflicting_pci_framebuffers+0x90/0x100 [drm]
  [c000000004133490] [c008000000da0ce4] bochs_pci_probe+0x6c/0xa64 [bochs]
  [...]
  [c000000004133db0] [c00000000002aaa0] system_call_exception+0x170/0x2d0
  [c000000004133e10] [c00000000000c3cc] system_call_common+0xec/0x250

The bug [1] was introduced by commit 27599aacbaef ("fbdev: Hot-unplug
firmware fb devices on forced removal"). Most firmware framebuffers
have an underlying platform device, which can be hot-unplugged
before loading the native graphics driver. OF framebuffers do not
(yet) have that device. Fix the code by unregistering the framebuffer
as before without a hot unplug.

Tested with 5.17 on qemu ppc64le emulation.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 27599aacbaef ("fbdev: Hot-unplug firmware fb devices on forced removal")
Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Cc: Zack Rusin <zackr@vmware.com>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: stable@vger.kernel.org # v5.11+
Cc: Helge Deller <deller@gmx.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Zheyu Ma <zheyuma97@gmail.com>
Cc: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Cc: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Link: https://lore.kernel.org/all/YkHXO6LGHAN0p1pq@debian/ # [1]
Link: https://patchwork.freedesktop.org/patch/msgid/20220404194402.29974-1-tzimmermann@suse.de
Merge tag 'drm-next-2022-03-25' of git://anongit.freedesktop.org/drm/drm 2022-03-25T21:57:47+00:00 Linus Torvalds torvalds@linux-foundation.org 2022-03-25T21:57:47+00:00 cb7cbaae7fd9cee64f19cdfd89d097d807b884f5 Pull drm fixes from Dave Airlie: "Some fixes were queued up in and in light of the fbdev regressions, I've pulled those in as well. core: - Make audio and color plane support checking only happen when a CEA extension block is found. - Small selftest fix. fbdev: - two regressions fixes from speedup patches. ttm: - Fix a small regression from ttm_resource_fini() i915: - Reject unsupported TMDS rates on ICL+ - Treat SAGV block time 0 as SAGV disabled - Fix PSF GV point mask when SAGV is not possible - Fix renamed INTEL_INFO->media.arch/ver field" * tag 'drm-next-2022-03-25' of git://anongit.freedesktop.org/drm/drm: fbdev: Fix cfb_imageblit() for arbitrary image widths fbdev: Fix sys_imageblit() for arbitrary image widths drm/edid: fix CEA extension byte #3 parsing drm/edid: check basic audio support on CEA extension block drm/i915: Fix renamed struct field drm/i915: Fix PSF GV point mask when SAGV is not possible drm/i915: Treat SAGV block time 0 as SAGV disabled drm/i915: Reject unsupported TMDS rates on ICL+ drm/selftest: plane_helper: Put test structures in static storage drm/ttm: Fix a kernel oops due to an invalid read 
Pull drm fixes from Dave Airlie:
 "Some fixes were queued up in and in light of the fbdev regressions,
  I've pulled those in as well.

  core:
   - Make audio and color plane support checking only happen when a CEA
     extension block is found.
   - Small selftest fix.

  fbdev:
   - two regressions fixes from speedup patches.

  ttm:
   - Fix a small regression from ttm_resource_fini()

  i915:
   - Reject unsupported TMDS rates on ICL+
   - Treat SAGV block time 0 as SAGV disabled
   - Fix PSF GV point mask when SAGV is not possible
   - Fix renamed INTEL_INFO->media.arch/ver field"

* tag 'drm-next-2022-03-25' of git://anongit.freedesktop.org/drm/drm:
  fbdev: Fix cfb_imageblit() for arbitrary image widths
  fbdev: Fix sys_imageblit() for arbitrary image widths
  drm/edid: fix CEA extension byte #3 parsing
  drm/edid: check basic audio support on CEA extension block
  drm/i915: Fix renamed struct field
  drm/i915: Fix PSF GV point mask when SAGV is not possible
  drm/i915: Treat SAGV block time 0 as SAGV disabled
  drm/i915: Reject unsupported TMDS rates on ICL+
  drm/selftest: plane_helper: Put test structures in static storage
  drm/ttm: Fix a kernel oops due to an invalid read
fbdev: Fix cfb_imageblit() for arbitrary image widths 2022-03-24T23:55:54+00:00 Thomas Zimmermann tzimmermann@suse.de 2022-03-13T19:29:52+00:00 2a81dba4b577099717cea86d429f053e85e74d96 Commit 0d03011894d2 ("fbdev: Improve performance of cfb_imageblit()") broke cfb_imageblit() for image widths that are not aligned to 8-bit boundaries. Fix this by handling the trailing pixels on each line separately. The performance improvements in the original commit do not regress by this change. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Fixes: 0d03011894d2 ("fbdev: Improve performance of cfb_imageblit()") Reported-by: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Javier Martinez Canillas <javierm@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220313192952.12058-3-tzimmermann@suse.de 
Commit 0d03011894d2 ("fbdev: Improve performance of cfb_imageblit()")
broke cfb_imageblit() for image widths that are not aligned to 8-bit
boundaries. Fix this by handling the trailing pixels on each line
separately. The performance improvements in the original commit do not
regress by this change.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 0d03011894d2 ("fbdev: Improve performance of cfb_imageblit()")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220313192952.12058-3-tzimmermann@suse.de
fbdev: Fix sys_imageblit() for arbitrary image widths 2022-03-24T23:55:52+00:00 Thomas Zimmermann tzimmermann@suse.de 2022-03-13T19:29:51+00:00 40faaf80c463b2c99a0351d28bd74d75d64ed017 Commit 6f29e04938bf ("fbdev: Improve performance of sys_imageblit()") broke sys_imageblit() for image width that are not aligned to 8-bit boundaries. Fix this by handling the trailing pixels on each line separately. The performance improvements in the original commit do not regress by this change. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Fixes: 6f29e04938bf ("fbdev: Improve performance of sys_imageblit()") Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Javier Martinez Canillas <javierm@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220313192952.12058-2-tzimmermann@suse.de 
Commit 6f29e04938bf ("fbdev: Improve performance of sys_imageblit()")
broke sys_imageblit() for image width that are not aligned to 8-bit
boundaries. Fix this by handling the trailing pixels on each line
separately. The performance improvements in the original commit do not
regress by this change.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 6f29e04938bf ("fbdev: Improve performance of sys_imageblit()")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220313192952.12058-2-tzimmermann@suse.de
Merge tag 'drm-next-2022-03-24' of git://anongit.freedesktop.org/drm/drm 2022-03-24T23:19:43+00:00 Linus Torvalds torvalds@linux-foundation.org 2022-03-24T23:19:43+00:00 b14ffae378aa1db993e62b01392e70d1e585fb23 Pull drm updates from Dave Airlie: "Lots of work all over, Intel improving DG2 support, amdkfd CRIU support, msm new hw support, and faster fbdev support. dma-buf: - rename dma-buf-map to iosys-map core: - move buddy allocator to core - add pci/platform init macros - improve EDID parser deep color handling - EDID timing type 7 support - add GPD Win Max quirk - add yes/no helpers to string_helpers - flatten syncobj chains - add nomodeset support to lots of drivers - improve fb-helper clipping support - add default property value interface fbdev: - improve fbdev ops speed ttm: - add a backpointer from ttm bo->ttm resource dp: - move displayport headers - add a dp helper module bridge: - anx7625 atomic support, HDCP support panel: - split out panel-lvds and lvds bindings - find panels in OF subnodes privacy: - add chromeos privacy screen support fb: - hot unplug fw fb on forced removal simpledrm: - request region instead of marking ioresource busy - add panel oreintation property udmabuf: - fix oops with 0 pages amdgpu: - power management code cleanup - Enable freesync video mode by default - RAS code cleanup - Improve VRAM access for debug using SDMA - SR-IOV rework special register access and fixes - profiling power state request ioctl - expose IP discovery via sysfs - Cyan skillfish updates - GC 10.3.7, SDMA 5.2.7, DCN 3.1.6 updates - expose benchmark tests via debugfs - add module param to disable XGMI for testing - GPU reset debugfs register dumping support amdkfd: - CRIU support - SDMA queue fixes radeon: - UVD suspend fix - iMac backlight fix i915: - minimal parallel submission for execlists - DG2-G12 subplatform added - DG2 programming workarounds - DG2 accelerated migration support - flat CCS and CCS engine support for XeHP - initial small BAR support - drop fake LMEM support - ADL-N PCH support - bigjoiner updates - introduce VMA resources and async unbinding - register definitions cleanups - multi-FBC refactoring - DG1 OPROM over SPI support - ADL-N platform enabling - opregion mailbox #5 support - DP MST ESI improvements - drm device based logging - async flip optimisation for DG2 - CPU arch abstraction fixes - improve GuC ADS init to work on aarch64 - tweak TTM LRU priority hint - GuC 69.0.3 support - remove short term execbuf pins nouveau: - higher DP/eDP bitrates - backlight fixes msm: - dpu + dp support for sc8180x - dp support for sm8350 - dpu + dsi support for qcm2290 - 10nm dsi phy tuning support - bridge support for dp encoder - gpu support for additional 7c3 SKUs ingenic: - HDMI support for JZ4780 - aux channel EDID support ast: - AST2600 support - add wide screen support - create DP/DVI connectors omapdrm: - fix implicit dma_buf fencing vc4: - add CSC + full range support - better display firmware handoff panfrost: - add initial dual-core GPU support stm: - new revision support - fb handover support mediatek: - transfer display binding document to yaml format. - add mt8195 display device binding. - allow commands to be sent during video mode. - add wait_for_event for crtc disable by cmdq. tegra: - YUV format support rcar-du: - LVDS support for M3-W+ (R8A77961) exynos: - BGR pixel format for FIMD device" * tag 'drm-next-2022-03-24' of git://anongit.freedesktop.org/drm/drm: (1529 commits) drm/i915/display: Do not re-enable PSR after it was marked as not reliable drm/i915/display: Fix HPD short pulse handling for eDP drm/amdgpu: Use drm_mode_copy() drm/radeon: Use drm_mode_copy() drm/amdgpu: Use ternary operator in `vcn_v1_0_start()` drm/amdgpu: Remove pointless on stack mode copies drm/amd/pm: fix indenting in __smu_cmn_reg_print_error() drm/amdgpu/dc: fix typos in comments drm/amdgpu: fix typos in comments drm/amd/pm: fix typos in comments drm/amdgpu: Add stolen reserved memory for MI25 SRIOV. drm/amdgpu: Merge get_reserved_allocation to get_vbios_allocations. drm/amdkfd: evict svm bo worker handle error drm/amdgpu/vcn: fix vcn ring test failure in igt reload test drm/amdgpu: only allow secure submission on rings which support that drm/amdgpu: fixed the warnings reported by kernel test robot drm/amd/display: 3.2.177 drm/amd/display: [FW Promotion] Release 0.0.108.0 drm/amd/display: Add save/restore PANEL_PWRSEQ_REF_DIV2 drm/amd/display: Wait for hubp read line for Pollock ... 
Pull drm updates from Dave Airlie:
 "Lots of work all over, Intel improving DG2 support, amdkfd CRIU
  support, msm new hw support, and faster fbdev support.

  dma-buf:
   - rename dma-buf-map to iosys-map

  core:
   - move buddy allocator to core
   - add pci/platform init macros
   - improve EDID parser deep color handling
   - EDID timing type 7 support
   - add GPD Win Max quirk
   - add yes/no helpers to string_helpers
   - flatten syncobj chains
   - add nomodeset support to lots of drivers
   - improve fb-helper clipping support
   - add default property value interface

  fbdev:
   - improve fbdev ops speed

  ttm:
   - add a backpointer from ttm bo->ttm resource

  dp:
   - move displayport headers
   - add a dp helper module

  bridge:
   - anx7625 atomic support, HDCP support

  panel:
   - split out panel-lvds and lvds bindings
   - find panels in OF subnodes

  privacy:
   - add chromeos privacy screen support

  fb:
   - hot unplug fw fb on forced removal

  simpledrm:
   - request region instead of marking ioresource busy
   - add panel oreintation property

  udmabuf:
   - fix oops with 0 pages

  amdgpu:
   - power management code cleanup
   - Enable freesync video mode by default
   - RAS code cleanup
   - Improve VRAM access for debug using SDMA
   - SR-IOV rework special register access and fixes
   - profiling power state request ioctl
   - expose IP discovery via sysfs
   - Cyan skillfish updates
   - GC 10.3.7, SDMA 5.2.7, DCN 3.1.6 updates
   - expose benchmark tests via debugfs
   - add module param to disable XGMI for testing
   - GPU reset debugfs register dumping support

  amdkfd:
   - CRIU support
   - SDMA queue fixes

  radeon:
   - UVD suspend fix
   - iMac backlight fix

  i915:
   - minimal parallel submission for execlists
   - DG2-G12 subplatform added
   - DG2 programming workarounds
   - DG2 accelerated migration support
   - flat CCS and CCS engine support for XeHP
   - initial small BAR support
   - drop fake LMEM support
   - ADL-N PCH support
   - bigjoiner updates
   - introduce VMA resources and async unbinding
   - register definitions cleanups
   - multi-FBC refactoring
   - DG1 OPROM over SPI support
   - ADL-N platform enabling
   - opregion mailbox #5 support
   - DP MST ESI improvements
   - drm device based logging
   - async flip optimisation for DG2
   - CPU arch abstraction fixes
   - improve GuC ADS init to work on aarch64
   - tweak TTM LRU priority hint
   - GuC 69.0.3 support
   - remove short term execbuf pins

  nouveau:
   - higher DP/eDP bitrates
   - backlight fixes

  msm:
   - dpu + dp support for sc8180x
   - dp support for sm8350
   - dpu + dsi support for qcm2290
   - 10nm dsi phy tuning support
   - bridge support for dp encoder
   - gpu support for additional 7c3 SKUs

  ingenic:
   - HDMI support for JZ4780
   - aux channel EDID support

  ast:
   - AST2600 support
   - add wide screen support
   - create DP/DVI connectors

  omapdrm:
   - fix implicit dma_buf fencing

  vc4:
   - add CSC + full range support
   - better display firmware handoff

  panfrost:
   - add initial dual-core GPU support

  stm:
   - new revision support
   - fb handover support

  mediatek:
   - transfer display binding document to yaml format.
   - add mt8195 display device binding.
   - allow commands to be sent during video mode.
   - add wait_for_event for crtc disable by cmdq.

  tegra:
   - YUV format support

  rcar-du:
   - LVDS support for M3-W+ (R8A77961)

  exynos:
   - BGR pixel format for FIMD device"

* tag 'drm-next-2022-03-24' of git://anongit.freedesktop.org/drm/drm: (1529 commits)
  drm/i915/display: Do not re-enable PSR after it was marked as not reliable
  drm/i915/display: Fix HPD short pulse handling for eDP
  drm/amdgpu: Use drm_mode_copy()
  drm/radeon: Use drm_mode_copy()
  drm/amdgpu: Use ternary operator in `vcn_v1_0_start()`
  drm/amdgpu: Remove pointless on stack mode copies
  drm/amd/pm: fix indenting in __smu_cmn_reg_print_error()
  drm/amdgpu/dc: fix typos in comments
  drm/amdgpu: fix typos in comments
  drm/amd/pm: fix typos in comments
  drm/amdgpu: Add stolen reserved memory for MI25 SRIOV.
  drm/amdgpu: Merge get_reserved_allocation to get_vbios_allocations.
  drm/amdkfd: evict svm bo worker handle error
  drm/amdgpu/vcn: fix vcn ring test failure in igt reload test
  drm/amdgpu: only allow secure submission on rings which support that
  drm/amdgpu: fixed the warnings reported by kernel test robot
  drm/amd/display: 3.2.177
  drm/amd/display: [FW Promotion] Release 0.0.108.0
  drm/amd/display: Add save/restore PANEL_PWRSEQ_REF_DIV2
  drm/amd/display: Wait for hubp read line for Pollock
  ...
Merge tag 'for-5.18/fbdev-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev 2022-03-23T21:45:01+00:00 Linus Torvalds torvalds@linux-foundation.org 2022-03-23T21:45:01+00:00 9c4b86ebf5bfdaceba4bedbaf76e4ff745db17ef Pull fbdev updates from Helge Deller: "Lots of small fixes and code cleanups across most of the fbdev drivers. This includes conversions to use helper functions, const conversions, spelling fixes, help text updates, adding return value checks, small build fixes, and much more" * tag 'for-5.18/fbdev-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: (59 commits) video: fbdev: kyro: make read-only array ODValues static const video: fbdev: offb: fix warning comparing pointer to 0 video: fbdev: omapfb: Add missing of_node_put() in dvic_probe_of video: fbdev: sm712fb: Fix crash in smtcfb_write() video: fbdev: s3c-fb: fix platform_get_irq.cocci warning video: fbdev: sm712fb: Fix crash in smtcfb_read() video: fbdev: via: check the return value of kstrdup() video: fbdev: au1100fb: Spelling s/palette/palette/ video: fbdev: atari: Atari 2 bpp (STe) palette bugfix video: fbdev: atari: Remove unused atafb_setcolreg() video: fbdev: atari: Convert to standard round_up() helper video: fbdev: atari: Fix TT High video mode video: fbdev: udlfb: replace snprintf in show functions with sysfs_emit video: fbdev: omapfb: panel-tpo-td043mtea1: Use sysfs_emit() instead of snprintf() video: fbdev: omapfb: panel-dsi-cm: Use sysfs_emit() instead of snprintf() video: fbdev: omapfb: Use sysfs_emit() instead of snprintf() video: fbdev: s3c-fb: Use platform_get_irq() to get the interrupt video: fbdev: Fix wrong file path for pvr2fb.c in Kconfig help text video: fbdev: pxa3xx-gcu: Remove unnecessary print function dev_err() video: fbdev: pxa168fb: Remove unnecessary print function dev_err() ... 
Pull fbdev updates from Helge Deller:
 "Lots of small fixes and code cleanups across most of the fbdev
  drivers.

  This includes conversions to use helper functions, const conversions,
  spelling fixes, help text updates, adding return value checks, small
  build fixes, and much more"

* tag 'for-5.18/fbdev-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: (59 commits)
  video: fbdev: kyro: make read-only array ODValues static const
  video: fbdev: offb: fix warning comparing pointer to 0
  video: fbdev: omapfb: Add missing of_node_put() in dvic_probe_of
  video: fbdev: sm712fb: Fix crash in smtcfb_write()
  video: fbdev: s3c-fb: fix platform_get_irq.cocci warning
  video: fbdev: sm712fb: Fix crash in smtcfb_read()
  video: fbdev: via: check the return value of kstrdup()
  video: fbdev: au1100fb: Spelling s/palette/palette/
  video: fbdev: atari: Atari 2 bpp (STe) palette bugfix
  video: fbdev: atari: Remove unused atafb_setcolreg()
  video: fbdev: atari: Convert to standard round_up() helper
  video: fbdev: atari: Fix TT High video mode
  video: fbdev: udlfb: replace snprintf in show functions with sysfs_emit
  video: fbdev: omapfb: panel-tpo-td043mtea1: Use sysfs_emit() instead of snprintf()
  video: fbdev: omapfb: panel-dsi-cm: Use sysfs_emit() instead of snprintf()
  video: fbdev: omapfb: Use sysfs_emit() instead of snprintf()
  video: fbdev: s3c-fb: Use platform_get_irq() to get the interrupt
  video: fbdev: Fix wrong file path for pvr2fb.c in Kconfig help text
  video: fbdev: pxa3xx-gcu: Remove unnecessary print function dev_err()
  video: fbdev: pxa168fb: Remove unnecessary print function dev_err()
  ...
fb_defio: Use noop_dirty_folio() 2022-03-16T17:37:05+00:00 Matthew Wilcox (Oracle) willy@infradead.org 2022-02-09T20:22:14+00:00 51cdea7ac94d8e4da13cd9880d2c331cd78222bb Remove the custom implementation of set_page_dirty. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Tested-by: Mike Marshall <hubcap@omnibond.com> # orangefs Tested-by: David Howells <dhowells@redhat.com> # afs 
Remove the custom implementation of set_page_dirty.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Tested-by: Mike Marshall <hubcap@omnibond.com> # orangefs
Tested-by: David Howells <dhowells@redhat.com> # afs
Merge tag 'drm-misc-next-2022-03-03' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2022-03-04T03:41:57+00:00 Dave Airlie airlied@redhat.com 2022-03-04T03:41:52+00:00 c9e9ce0b6f85ac330adee912745048a0af5f315d drm-misc-next for v5.18: UAPI Changes: Cross-subsystem Changes: - Improve performance of some fbdev ops, in some cases up to 6x faster. Core Changes: - Some small DP fixes. - Find panels in subnodes of OF devices, and add of_get_drm_panel_display_mode to retrieve mode. - Add drm_object_property_get_default_value and use it for resetting zpos in plane state reset, removing the need for individual drivers to do it. - Same for color encoding and color range props. - Update panic handling todo doc. - Add todo that format conversion helpers should be sped up similarly to fbdev ops. Driver Changes: - Add panel orientation property to simpledrm for quirked panels. - Assorted small fixes to tiny/repaper, nouveau, stm, omap, ssd130x. - Add crc support to stm/ltdc. - Add MIPI DBI compatible SPI driver - Assorted small fixes to tiny panels and bridge drivers. - Add AST2600 support to aspeed. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/48fabd78-ade9-f80b-c724-13726c7be69e@linux.intel.com 
drm-misc-next for v5.18:

UAPI Changes:

Cross-subsystem Changes:
- Improve performance of some fbdev ops, in some cases up to 6x faster.

Core Changes:
- Some small DP fixes.
- Find panels in subnodes of OF devices, and add of_get_drm_panel_display_mode
  to retrieve mode.
- Add drm_object_property_get_default_value and use it for resetting
  zpos in plane state reset, removing the need for individual drivers
  to do it.
- Same for color encoding and color range props.
- Update panic handling todo doc.
- Add todo that format conversion helpers should be sped up similarly to fbdev ops.

Driver Changes:
- Add panel orientation property to simpledrm for quirked panels.
- Assorted small fixes to tiny/repaper, nouveau, stm, omap, ssd130x.
- Add crc support to stm/ltdc.
- Add MIPI DBI compatible SPI driver
- Assorted small fixes to tiny panels and bridge drivers.
- Add AST2600 support to aspeed.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/48fabd78-ade9-f80b-c724-13726c7be69e@linux.intel.com
fbdev: Improve performance of cfb_imageblit() 2022-03-02T19:22:33+00:00 Thomas Zimmermann tzimmermann@suse.de 2022-02-23T19:38:03+00:00 0d03011894d23241db1a1cad5c12aede60897d5e Improve the performance of cfb_imageblit() by manually unrolling the inner blitting loop and moving some invariants out. The compiler failed to do this automatically. This change keeps cfb_imageblit() in sync with sys_imagebit(). A microbenchmark measures the average number of CPU cycles for cfb_imageblit() after a stabilizing period of a few minutes (i7-4790, FullHD, simpledrm, kernel with debugging). cfb_imageblit(), new: 15724 cycles cfb_imageblit(): old: 30566 cycles In the optimized case, cfb_imageblit() is now ~2x faster than before. v3: * fix commit description (Pekka) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220223193804.18636-5-tzimmermann@suse.de 
Improve the performance of cfb_imageblit() by manually unrolling
the inner blitting loop and moving some invariants out. The compiler
failed to do this automatically. This change keeps cfb_imageblit()
in sync with sys_imagebit().

A microbenchmark measures the average number of CPU cycles
for cfb_imageblit() after a stabilizing period of a few minutes
(i7-4790, FullHD, simpledrm, kernel with debugging).

cfb_imageblit(), new: 15724 cycles
cfb_imageblit(): old: 30566 cycles

In the optimized case, cfb_imageblit() is now ~2x faster than before.

v3:
	* fix commit description (Pekka)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220223193804.18636-5-tzimmermann@suse.de
fbdev: Remove trailing whitespaces from cfbimgblt.c 2022-03-02T19:22:06+00:00 Thomas Zimmermann tzimmermann@suse.de 2022-02-23T19:38:02+00:00 3c54c95bd917d43d12fe1b192df9aa4c5973449b Fix coding style. No functional changes. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220223193804.18636-4-tzimmermann@suse.de 
Fix coding style. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220223193804.18636-4-tzimmermann@suse.de