Although 4 unique register values exist for gamma modes, two are
actually the same (the two RAMs) It’s not possible for caller to
understand this HW specific behavior, so some parsing is necessary
in driver
Signed-off-by: Jun Lei <Jun.Lei@amd.com>
Reviewed-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]Update Code to get DTN golden log check to pass for tests run after
DAL217 tests.
[How]Change how dcn10_log_hw_state function prints HW state info
(CM_GAMUT_REMAP_Cx_Cx registers) when GAMUT REMAP is in bypass mode.
Signed-off-by: Gary Kattan <gary.kattan@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
We currently lock modeset by setting a boolean in dm. We want to lock
Based on what DC tells us.
[How]
Build stream_updates and plane_update based on what changed. Then we
call check_update_surfaces_for_stream() to get the update type
We lock only if update_type is not fast
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Otherwise we won't be able to use the AGP aperture.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Start to use the old AGP aperture for system memory access.
v2: Move that to amdgpu_ttm_alloc_gart
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Helper to figure out the location of the AGP BAR.
v2: fix a couple of bugs
v3: correctly add one to vram_end
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Correct sign extend the GMC addresses to 48bit.
v2: sign extending turned out easier than thought.
v3: clean up the defines and move them into amdgpu_gmc.h as well
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Since we have a lot of FAQ on the VM state machine try to improve the
documentation by adding functions for each state move.
v2: fix typo in amdgpu_vm_bo_invalidated, use amdgpu_vm_bo_relocated in
one more place as well.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Avoid unlocking a lock we never locked.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Allows us to avoid taking the spinlock in more places.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
amdgpu_vm_bo_* functions should come much later.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
For under voltage, negative value will be applied to voltage
offset. Update the data type to cover this case.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Added vega20 overdrive support based on existing OD sysfs
APIs. However, the OD logics are simplified on vega20. So,
the behavior will be a little different and works only on
some limited levels.
V2: fix typo
fix commit description
revise error logs
add support for clock OD
V3: separate clock from voltage OD settings
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Merge tag 'gvt-next-2018-09-04'
drm-intel-next-2018-09-06-1:
UAPI Changes:
- GGTT coherency GETPARAM: GGTT has turned out to be non-coherent for some
platforms, which we've failed to communicate to userspace so far. SNA was
modified to do extra flushing on non-coherent GGTT access, while Mesa will
mitigate by always requiring WC mapping (which is non-coherent anyway).
- Neuter Resource Streamer uAPI: There never really were users for the feature,
so neuter it while keeping the interface bits for compatibility. This is a
long due item from past.
Cross-subsystem Changes:
- Backmerge of branch drm-next-4.19 for DP_DPCD_REV_14 changes
Core Changes:
- None
Driver Changes:
- A load of Icelake (ICL) enabling patches (Paulo, Manasi)
- Enabled full PPGTT for IVB,VLV and HSW (Chris)
- Bugzilla #107113: Distribute DDB based on display resolutions (Mahesh)
- Bugzillas #100023,#107476,#94921: Support limited range DP displays (Jani)
- Bugzilla #107503: Increase LSPCON timeout (Fredrik)
- Avoid boosting GPU due to an occasional stall in interactive workloads (Chris)
- Apply GGTT coherency W/A only for affected systems instead of all (Chris)
- Fix for infinite link training loop for faulty USB-C MST hubs (Nathan)
- Keep KMS functional on Gen4 and earlier when GPU is wedged (Chris)
- Stop holding ppGTT reference from closed VMAs (Chris)
- Clear error registers after error capture (Lionel)
- Various Icelake fixes (Anusha, Jyoti, Ville, Tvrtko)
- Add missing Coffeelake (CFL) PCI IDs (Rodrigo)
- Flush execlists tasklet directly from reset-finish (Chris)
- Fix LPE audio runtime PM (Chris)
- Fix detection of out of range surface positions (GLK/CNL) (Ville)
- Remove wait-for-idle for PSR2 (Dhinakaran)
- Power down existing display hardware resources when display is disabled (Chris)
- Don't allow runtime power management if RC6 doesn't exist (Chris)
- Add debugging checks for runtime power management paths (Imre)
- Increase symmetry in display power init/fini paths (Imre)
- Isolate GVT specific macros from i915_reg.h (Lucas)
- Increase symmetry in power management enable/disable paths (Chris)
- Increase IP disable timeout to 100 ms to avoid DRM_ERROR (Imre)
- Fix memory leak from HDMI HDCP write function (Brian, Rodrigo)
- Reject Y/Yf tiling on interlaced modes (Ville)
- Use a cached mapping for the physical HWS on older gens (Chris)
- Force slow path of writing relocations to buffer if unable to write to userspace (Chris)
- Do a full device reset after being wedged (Chris)
- Keep forcewake counts over reset (in case of debugfs user) (Imre, Chris)
- Avoid false-positive errors from power wells during init (Imre)
- Reset engines forcibly in exchange of declaring whole device wedged (Mika)
- Reduce context HW ID lifetime in preparation for Icelake (Chris)
- Attempt to recover from module load failures (Chris)
- Keep select interrupts over a reset to avoid missing/losing them (Chris)
- GuC submission backend improvements (Jakub)
- Terminate context images with BB_END (Chris, Lionel)
- Make GCC evaluate GGTT view struct size assertions again (Ville)
- Add selftest to exercise suspend/hibernate code-paths for GEM (Chris)
- Use a full emulation of a user ppgtt context in selftests (Chris)
- Exercise resetting in the middle of a wait-on-fence in selftests (Chris)
- Fix coherency issues on selftests for Baytrail (Chris)
- Various other GEM fixes / self-test updates (Chris, Matt)
- GuC doorbell self-tests (Daniele)
- PSR mode control through debugfs for IGTs (Maarten)
- Degrade expected WM latency errors to DRM_DEBUG_KMS (Chris)
- Cope with errors better in MST link training (Dhinakaran)
- Fix WARN on KBL external displays (Azhar)
- Power well code cleanups (Imre)
- Fixes to PSR debugging (Dhinakaran)
- Make forcewake errors louder for easier catching in CI (WARNs) (Chris)
- Fortify tiling code against programmer errors (Chris)
- Bunch of fixes for CI exposed corner cases (multiple authors, mostly Chris)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180907105446.GA22860@jlahtine-desk.ger.corp.intel.com
Leaving the DRM driver enabled on reboot or kexec has the annoying
effect of leaving the display generating transactions whilst the
IOMMU has been shut down.
In turn, the IOMMU driver (which shares its interrupt line with
the VOP) starts warning either on shutdown or when entering the
secondary kernel in the kexec case (nothing is expected on that
front).
A cheap way of ensuring that things are nicely shut down is to
register a shutdown callback in the platform driver.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: Vicente Bergas <vicencb@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180805124807.18169-1-marc.zyngier@arm.com
Cc: stable@vger.kernel.org
Clarify the relation between drm_fb_helper_fbdev_setup/teardown. Clarify
requirements for the new generic fbdev emulation API and log some more
details in case the driver does something wrong. Fix related typos.
Cc: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180906221810.20170-5-peter@lekensteyn.nl
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Currently unloading bochs_drm (after unbinding the vtconsole) results in
a warning about a leaked connector:
[drm:drm_mode_config_cleanup] *ERROR* connector Virtual-3 leaked!
While investigating a potential fix I noticed that a lot of open-coded
functionality is already implemented elsewhere, so start converting it:
bochs_fbdev_init -> drm_fb_helper_fbdev_setup: trivial (similar impl).
bochs_fbdev_fini -> drm_fb_helper_fbdev_teardown: requires unembedding
"struct drm_framebuffer" from "struct bochs_framebuffer".
Unembedding drm_framebuffer is made easy using drm_gem_fbdev_fb_create
which can replace bochs_fbdev_destroy and custom routines in bochs_mm.c.
For this to work, the GEM object is moved into "drm_framebuffer". After
that, "bochs_framebuffer" is no longer needed and therefore removed.
Remove the unused "size" and "initialized" fields from fb, the latter is
not necessary as drm_fb_helper_fbdev_teardown can be called even if
bochsfb_create fails. This theory was tested by returning early and
late (just before drm_gem_fbdev_fb_create). Both scenarios fail
gracefully although the latter seems to leak the object from
bochsfb_create_object (not a regression).
Guess on the reason for the encoder leak: drm_framebuffer_cleanup was
previously used, but did not destroy much. drm_fb_helper_fbdev_teardown
is now used and calls drm_framebuffer_remove which does a bit more work.
Tested with 'echo 0 > /sys/class/vtconsole/vtcon1/bind; rmmod bochs_drm'
and also with Xorg + fbdev (startx -> xterm). The latter triggered a
warning in ttm_bo_vm_open that existed before, see
https://lkml.kernel.org/r/1464000533-13140-4-git-send-email-mstaudt@suse.de
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Link: http://patchwork.freedesktop.org/patch/msgid/20180906221810.20170-3-peter@lekensteyn.nl
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Drivers must set the quirk_addfb_prefer_host_byte_order quirk to make
the drm_mode_addfb() compat code work correctly on bigendian machines.
If they don't they interpret pixel_format values incorrectly for bug
compatibility, which in turn implies the ADDFB2 ioctl does not work
correctly then. So block it to make userspace fallback to ADDFB.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180907073213.20410-1-kraxel@redhat.com
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/gpu/drm/virtio/virtgpu_display.c: In function 'virtio_gpu_framebuffer_init':
drivers/gpu/drm/virtio/virtgpu_display.c:78:28: warning:
variable 'bo' set but not used [-Wunused-but-set-variable]
struct virtio_gpu_object *bo;
^
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1536285837-150460-1-git-send-email-yuehaibing@huawei.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This leaves all the commit/check and state handling in drm_atomic.c,
while pulling all the uapi glue and the huge ioctl itself into a
seprate file.
This seems to almost perfectly split the rather big drm_atomic.c file
into 2 equal sizes.
Also adjust the kerneldoc and type a very terse overview text.
v2: Rebase.
v3: Fix tiny typo.
v4:
- Fixup armada, newly converted atomic driver hooray!
- Fixup msm/dpu1, newly added too.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: intel-gfx@lists.freedesktop.org
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180905135711.28370-7-daniel.vetter@ffwll.ch
- drmP.h is now fully split up.
- vkms is happening (and will gain its own todo and docs under a new
vkms.rst file real soon)
- legacy cruft is completely hidden now, drm_vblank.c is split out
from drm_irq.c now. I've decided to drop the task to split out
drm_legacy.ko, partially because Dave already rejected a patch to
hide the old dri1 drivers better. Current state feels good enough to
me.
- best_encoder atomic cleanup is done (it's now the default, not even
exported anymore)
- bunch of smaller things
v2:
- Explain why the drm_legacy.ko task is dropped (Emil).
- typos (Sam).
v3: Fix typo (Ilia)
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Cc: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: David Airlie <airlied@linux.ie>
Link: https://patchwork.freedesktop.org/patch/msgid/20180905181509.19530-1-daniel.vetter@ffwll.ch
Remove the kerneldoc and EXPORT_SYMBOL which aren't used and really
shouldn't ever be used by drivers directly.
Unfortunately this means we need to move the set_writeback_fb function
around to avoid a forward decl.
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180905135711.28370-5-daniel.vetter@ffwll.ch
Only needed minimal changes in drm_internal.h (for the drm_ioctl_t
type and a few forward declarations), plus a few missing includes in
drm_connector.c.
Yay, the last stage of the drm header cleanup can finally commence!
v2: Compiles now, with drm/drm_util.h extracted.
v3: Fix up commit message (Sam Ravnborg)
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180905135711.28370-2-daniel.vetter@ffwll.ch
We have a bunch of neat little macros all over the place which should
move to kernel.h. But some of them died in bikesheds on lkml, and we
need a decent home for them.
Start out by moving the for_each_if macro there.
v2: Rename to drm_util.h instead (Dave&Sean)
Cc: Sean Paul <seanpaul@chromium.org>
Acked-by: Sean Paul <seanpaul@chromium.org>
Cc: Dave Airlie <airlied@gmail.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180905135711.28370-1-daniel.vetter@ffwll.ch
The hardware supports dithering on TCON channel 0 which is used for LCD
panels.
Dithering is a method of approximating a color from a mixture of other
colors when the required color isn't available. It reduces color
banding artifacts that can be observed when displaying gradients
(e.g. grayscale gradients). This may occur when the image that needs
to be displayed is 24-bit but the LCD panel is a lower bit depth and
does not perform dithering on its own.
Signed-off-by: Jonathan Liu <net147@gmail.com>
[wens@csie.org: check display_info.bpc first; handle LVDS and MIPI DSI]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180907041948.19913-4-wens@csie.org
Dithering is only supported for TCON channel 0. Throughout the datasheet
all the names associated with these register are prefixed "TCON0",
instead of "TCON". The only exception is the control register
"TCON_FRM_CTL_REG".
Rename the macros to reflect this.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180907041948.19913-3-wens@csie.org
sun4i_tcon0_mode_set_cpu() currently accepts struct mipi_dsi_device *
as its second parameter. This is derived from drm_encoder.
The DSI encoder is tied to the CPU interface mode of the TCON as a
special case. In theory, if hardware were available, we could also
support normal CPU interface modes. It is better to pass the generic
encoder instead of the specialized mipi_dsi_device, and handle the
differences inside the function.
Passing the encoder would also enable the function to pass it, or any
other data structures related to it, to other functions expecting it.
One such example would be dithering support that will be added in a
later patch, which looks at properties tied to the connector to
determine whether dithering should be enabled or not.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180907041948.19913-2-wens@csie.org
Big amount of changes from Laurent, reworking the driver towards the
model used by the other DRM drivers by reverting the direction of many
of the operations on the display pipeline. The aim of this work is to
allow omapdrm to use the common DRM panels and bridges. Not all of the
operations are dealt in these patches, so more work needs to be done.
The only change visible to the user should be the change in module
dependencies: e.g. earlier a panel module depended on an encoder module,
but now the encoder module depends on the panel module, which affects
the order in which to unload the modules.
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Merge tag 'omapdrm-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux into drm-next
omapdrm changes for v4.20
Big amount of changes from Laurent, reworking the driver towards the
model used by the other DRM drivers by reverting the direction of many
of the operations on the display pipeline. The aim of this work is to
allow omapdrm to use the common DRM panels and bridges. Not all of the
operations are dealt in these patches, so more work needs to be done.
The only change visible to the user should be the change in module
dependencies: e.g. earlier a panel module depended on an encoder module,
but now the encoder module depends on the panel module, which affects
the order in which to unload the modules.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/9bb1a01b-a632-ce0c-f249-7b5470967e3a@ti.com
we can place a fence to a timeline point after expanded.
v2: change func parameter order
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/246543/
we can fetch timeline point fence after expanded.
v2: The parameter fence is the result of the function and should come last.
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/246541/
moved to front of file.
stub fence will be used by timeline syncobj as well.
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/246539/
That is certainly totally nonsense. dma_fence_enable_sw_signaling()
is the function who is calling this callback.
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/246535/
Since this is handling user provided bpp and depth, we need to sanity
check and propagate the EINVAL back rather than assume what the insane
client intended and fill the logs with DRM_ERROR.
v2: Check both bpp and depth match the builtin pixel format, and
introduce a canonical DRM_FORMAT_INVALID to reserve 0 against any future
fourcc.
v3: Mark up DRM_FORMAT_C8 as being {bpp:8, depth:8}
Testcase: igt/kms_addfb_basic/legacy-format
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180905153116.28924-1-chris@chris-wilson.co.uk
Userspace on big endian machhines typically expects the ADDFB ioctl
returns a big endian framebuffer. drm_mode_addfb() will call
drm_mode_addfb2() unconditionally with little endian DRM_FORMAT_*
values though, which is wrong. This patch fixes that.
Drivers (both kernel and xorg) have quirks in place to deal with the
broken drm_mode_addfb() behavior. Because of this we can't just change
drm_mode_addfb() behavior for everybody without breaking things. Add
the quirk_addfb_prefer_host_byte_order field to mode_config, so drivers
can opt-in.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180905060445.15008-5-kraxel@redhat.com
framebuffer_check() expects that drm_get_format_info() will not fail if
the __drm_format_info() call was successful. That'll work only in case
both are called with the same pixel_format value, so masking out the
DRM_FORMAT_BIG_ENDIAN flag isn't a good idea.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180905060445.15008-4-kraxel@redhat.com
Dmytro Laktyushkin