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Author SHA1 Message Date
Alex Deucher
f9b7f3703f drm/amdgpu/acpi: make ATPX/ATCS structures global (v2)
They are global ACPI methods, so maybe the structures
global in the driver. This simplified a number of things
in the handling of these methods.

v2: reset the handle if verify interface fails (Lijo)
v3: fix compilation when ACPI is not defined.

Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-27 12:33:52 -04:00
Lee Jones
48e01bf4c1 drm/amd/display/amdgpu_dm/amdgpu_dm: Fix kernel-doc formatting issue
Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:608: warning: Function parameter or member 'interrupt_params' not described in 'dm_dcn_vertical_interrupt0_high_irq'

Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-27 12:33:51 -04:00
Lee Jones
9e1178ef95 drm/amd/display/amdgpu_dm/amdgpu_dm: Functions must directly follow their headers
Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:608: warning: Function parameter or member 'interrupt_params' not described in 'dm_dcn_vertical_interrupt0_high_irq'

Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-27 12:33:51 -04:00
Fangzhi Zuo
998b7ad2ef drm/amd/display: Refactor SST DSC Determination Policy
[Why & How]
SST dsc determination policy becomes bigger when more scenarios
are introduced. Take it out to make it clean and readable.

Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-27 12:26:08 -04:00
Fangzhi Zuo
27fc432865 drm/amd/display: Add Log for SST DSC Determination Policy
[Why & How]
To facilitate DSC debugging purpose

Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-27 12:26:01 -04:00
Roman Li
051b788718 drm/amd/display: Fix potential memory leak in DMUB hw_init
[Why]
On resume we perform DMUB hw_init which allocates memory:
dm_resume->dm_dmub_hw_init->dc_dmub_srv_create->kzalloc
That results in memory leak in suspend/resume scenarios.

[How]
Allocate memory for the DC wrapper to DMUB only if it was not
allocated before.
No need to reallocate it on suspend/resume.

Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-27 12:25:28 -04:00
Roman Li
3beac533b8 drm/amd/display: Remove redundant safeguards for dmub-srv destroy()
[Why]
dc_dmub_srv_destroy() has internal null-check and null assignment.
No need to duplicate them externally.

[How]
Remove redundant safeguards.

Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-27 12:25:19 -04:00
Fangzhi Zuo
68d9821ff4 drm/amd/display: Retrieve DSC Branch Decoder Caps
DSC extended branch decoder caps 0xA0 ~ 0xA2 is read from dsc_aux.
The dsc_aux is returned from drm dsc determination policy with the
right DSC capable MST branch device for decoding.

The values are all zero if DSC decoding at a MST BU with virtual DPCD;
The values are meaningful when DSC decoding at a MST BU without
virtual DPCD or at a DSC capable MST endpoint.

Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-27 12:24:45 -04:00
Jake Wang
6e568e438b drm/amd/display: Added support for individual control for multiple back-light instances.
[Why & How]
Added support for individual control for multiple back-light instances.

Signed-off-by: Jake Wang <haonan.wang2@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-27 12:24:03 -04:00
Rodrigo Siqueira
e8ce3d474f drm/amd/display: Fix overlay validation by considering cursors
A few weeks ago, we saw a two cursor issue in a ChromeOS system. We
fixed it in the commit:

 drm/amd/display: Fix two cursor duplication when using overlay
 (read the commit message for more details)

After this change, we noticed that some IGT subtests related to
kms_plane and kms_plane_scaling started to fail. After investigating
this issue, we noticed that all subtests that fail have a primary plane
covering the overlay plane, which is currently rejected by amdgpu dm.
Fail those IGT tests highlight that our verification was too broad and
compromises the overlay usage in our drive. This patch fixes this issue
by ensuring that we only reject commits where the primary plane is not
fully covered by the overlay when the cursor hardware is enabled. With
this fix, all IGT tests start to pass again, which means our overlay
support works as expected.

Cc: Tianci.Yin <tianci.yin@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Nicholas Choi <nicholas.choi@amd.com>
Cc: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Cc: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Cc: Mark Yacoub <markyacoub@google.com>
Cc: Daniel Wheeler <daniel.wheeler@amd.com>

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-27 12:21:37 -04:00
Thomas Zimmermann
304ba5dca4 Merge drm/drm-next into drm-misc-next
Backmerging from drm/drm-next to the patches for AMD devices
for v5.14.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
2021-05-22 07:17:05 +02:00
Alex Deucher
cd11b58cce drm/amdgpu/display: make backlight setting failure messages debug
Avoid spamming the log.  The backlight controller on DCN chips
gets powered down when the display is off, so if you attempt to
set the backlight level when the display is off, you'll get this
message.  This isn't a problem as we cache the requested backlight
level if it's adjusted when the display is off and set it again
during modeset.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: nicholas.choi@amd.com
Cc: harry.wentland@amd.com
2021-05-21 18:02:53 -04:00
Nicholas Kazlauskas
b0781603af drm/amd/display: Fix GPU scaling regression by FS video support
[Why]
FS video support regressed GPU scaling and the scaled buffer ends up
stuck in the top left of the screen at native size - full, aspect,
center scaling modes do not function.

This is because decide_crtc_timing_for_drm_display_mode() does not
get called when scaling is enabled.

[How]
Split recalculate timing and scaling into two different flags.

We don't want to call drm_mode_set_crtcinfo() for scaling, but we
do want to call it for FS video.

Optimize and move preferred_refresh calculation next to
decide_crtc_timing_for_drm_display_mode() like it used to be since
that's not used for FS video.

We don't need to copy over the VIC or polarity in the case of FS video
modes because those don't change.

Fixes: 6f59f229f8 ("drm/amd/display: Skip modeset for front porch change")

Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-21 18:00:13 -04:00
Aurabindo Pillai
d2aa135683 drm/amd/display: take dc_lock in short pulse handler only
[Why]
Conditions that end up modifying the global dc state must be locked.
However, during mst allocate payload sequence, lock is already taken.
With StarTech 1.2 DP hub, we get an HPD RX interrupt for a reason other
than to indicate down reply availability right after sending payload
allocation. The handler again takes dc lock before calling the
dc's HPD RX handler. Due to this contention, the DRM thread which waits
for MST down reply never gets a chance to finish its waiting
successfully and ends up timing out. Once the lock is released, the hpd
rx handler fires and goes ahead to read from the MST HUB, but now its
too late and the HUB doesnt lightup all displays since DRM lacks error
handling when payload allocation fails.

[How]
Take lock only if there is a change in link status or if automated test
pattern bit is set. The latter fixes the null pointer dereference when
running certain DP Link Layer Compliance test.

Fixes: c8ea79a8a2 ("drm/amd/display: NULL pointer error during compliance test")

Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-21 10:30:26 -04:00
Dave Airlie
9a91e5e0af Merge tag 'amd-drm-next-5.14-2021-05-21' of https://gitlab.freedesktop.org/agd5f/linux into drm-next
amd-drm-next-5.14-2021-05-21:

amdgpu:
- RAS fixes
- SR-IOV fixes
- More BO management cleanups
- Aldebaran fixes
- Display fixes
- Support for new GPU, Beige Goby
- Backlight fixes

amdkfd:
- RAS fixes
- DMA mapping fixes
- HMM SVM fixes

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210521045743.4047-1-alexander.deucher@amd.com
2021-05-21 15:59:05 +10:00
Dave Airlie
c99c4d0ca5 Merge tag 'amd-drm-next-5.14-2021-05-19' of https://gitlab.freedesktop.org/agd5f/linux into drm-next
amd-drm-next-5.14-2021-05-19:

amdgpu:
- Aldebaran updates
- More LTTPR display work
- Vangogh updates
- SDMA 5.x GCR fixes
- RAS fixes
- PCIe ASPM support
- Modifier fixes
- Enable TMZ on Renoir
- Buffer object code cleanup
- Display overlay fixes
- Initial support for multiple eDP panels
- Initial SR-IOV support for Aldebaran
- DP link training refactor
- Misc code cleanups and bug fixes
- SMU regression fixes for variable sized arrays
- MAINTAINERS fixes for amdgpu

amdkfd:
- Initial SR-IOV support for Aldebaran
- Topology fixes
- Initial HMM SVM support
- Misc code cleanups and bug fixes

radeon:
- Misc code cleanups and bug fixes
- SMU regression fixes for variable sized arrays
- Flickering fix for Oland with multiple 4K displays

UAPI:
- amdgpu: Drop AMDGPU_GEM_CREATE_SHADOW flag.
  This was always a kernel internal flag and userspace use of it has always been blocked.
  It's no longer needed so remove it.
- amdkgd: HMM SVM support
  Overview: https://patchwork.freedesktop.org/series/85562/
  Porposed userspace: https://github.com/RadeonOpenCompute/ROCT-Thunk-Interface/tree/fxkamd/hmm-wip

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

From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210520031258.231896-1-alexander.deucher@amd.com
2021-05-21 15:29:40 +10:00
Andrey Grodzovsky
984f8261bb drm/amd/display: Remove superfluous drm_mode_config_cleanup
It's already being released by DRM core through devm

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210512142648.666476-15-andrey.grodzovsky@amd.com
2021-05-19 23:50:28 -04:00
Andrey Grodzovsky
e9669fb782 drm/amdgpu: Add early fini callback
Use it to call disply code dependent on device->drv_data
before it's set to NULL on device unplug

v5:
Move HW finilization into this callback to prevent MMIO accesses
post cpi remove.

v7:
Split kfd suspend from device exit to expdite HW related
stuff to amdgpu_pci_remove

v8:
Squash previous KFD commit into this commit to avoid compile break.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210520032057.497334-1-andrey.grodzovsky@amd.com
2021-05-19 23:48:50 -04:00
Alex Deucher
7230362c78 drm/amdgpu/display: restore the backlight on modeset (v2)
To stay consistent with the user's setting.

v2: rebase on multi-eDP support

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1337
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-19 22:44:36 -04:00
Alex Deucher
3d6c91641b drm/amdgpu/display: add helper functions to get/set backlight (v2)
And cache the value.  These can be used by the backlight callbacks
and modesetting functions.

v2: rebase on latest backlight changes.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1337
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-19 22:44:31 -04:00
Aurabindo Pillai
656fe9b656 drm/amd/display: Add DM support for Beige Goby
[Why&How]

Adds the firmware definition and missing cases statement
hooks for Beige Goby support in AMDGPU DM.

Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-19 22:42:08 -04:00
Wayne Lin
bbc49fc032 drm/amd/display: Avoid get/put vblank when stream disabled
[Why]
amdgpu_dm_crtc_set_crc_source() will call
amdgpu_dm_crtc_configure_crc_source() to enable/disable CRC
generation. However, configuration will be deferred to stream enabled.
If stream is not enabled, current flow will still try to get/put vblank
refcount.

[How]
Return EINVAL to skip actions on vblank refcount when stream is not
enabled.

Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Reviewed-by: Chao-kai Wang <Stylon.Wang@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-19 22:39:28 -04:00
Wayne Lin
d98af2725d drm/amd/display: Refactor suspend/resume of Secure display
[Why]
Once set ROI and do suspend/resume, current flow will not enable
OTG_CRC_CTL again due to we'll defer crc configuration when stream
is enabled.

[How]
Remove current suspend/resume function and have logic implemented into
amdgpu_dm_atomic_commit_tail()

Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Reviewed-by: Chao-kai Wang <Stylon.Wang@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-19 22:39:16 -04:00
Alex Deucher
cbd4945ca5 drm/amdgpu/display: fix dal_allocation documentation
Add missing structure elements.

Fixes: 0dd7953234 ("drm/amdgpu/display: Implement functions to let DC allocate GPU memory")
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-19 22:28:51 -04:00
Dave Airlie
3a3ca72653 drm-misc-next for 5.14:
UAPI Changes:
 
  * drm: Disable connector force-probing for non-master clients
  * drm: Enforce consistency between IN_FORMATS property and cap + related
    driver cleanups
  * drm/amdgpu: Track devices, process info and fence info via
    /proc/<pid>/fdinfo
  * drm/ioctl: Mark AGP-related ioctls as legacy
  * drm/ttm: Provide tt_shrink file to trigger shrinker via debugfs;
 
 Cross-subsystem Changes:
 
  * fbdev/efifb: Special handling of non-PCI devices
  * fbdev/imxfb: Fix error message
 
 Core Changes:
 
  * drm: Add connector helper to attach HDR-metadata property and convert
    drivers
  * drm: Add connector helper to compare HDR-metadata and convert drivers
  * drm: Add conenctor helper to attach colorspace property
  * drm: Signal colorimetry in HDMI infoframe
  * drm: Support pitch for destination buffers; Add blitter function
    with generic format conversion
  * drm: Remove struct drm_device.pdev and update legacy drivers
  * drm: Remove obsolete DRM_KMS_FB_HELPER config option in core and drivers
  * drm: Remove obsolete drm_pci_alloc/drm_pci_free
 
  * drm/aperture: Add helpers for aperture ownership and convert drivers, replaces rsp fbdev helpers
 
  * drm/agp: Mark DRM AGP code as legacy and convert legacy drivers
 
  * drm/atomic-helpers: Cleanups
 
  * drm/dp: Handle downstream port counts of 0 correctly; AUX channel fixes; Use
    drm_err_*/drm_dbg_*(); Cleanups
 
  * drm/dp_dual_mode: Use drm_err_*/drm_dbg_*()
 
  * drm/dp_mst: Use drm_err_*/drm_dbg_*(); Use Extended Base Receiver Capability DPCD space
 
  * drm/gem-ttm-helper: Provide helper for dumb_map_offset and convert drivers
 
  * drm/panel: Use sysfs_emit; panel-simple: Use runtime PM, Power up panel
               when reading EDID, Cache EDID, Cleanups;
               Lms397KF04: DT bindings
 
  * drm/pci: Mark AGP helpers as legacy
 
  * drm/print: Handle NULL for DRM devices gracefully
 
  * drm/scheduler: Change scheduled fence track
 
  * drm/ttm: Don't count SG BOs against pages_limit; Warn about freeing pinned
             BOs; Fix error handling if no BO can be swapped out; Move special
             handling of non-GEM drivers into vmwgfx; Move page_alignment into
             the BO; Set drm-misc as TTM tree in MAINTAINERS; Cleanup
 	    ttm_agp_backend; Add ttm_sys_manager for system domain; Cleanups
 
 Driver Changes:
 
  * drm: Don't set allow_fb_modifiers explictly in drivers
 
  * drm/amdgpu: Pin/unpin fixes wrt to TTM; Use bo->base.size instead of
    mem->num_pages
 
  * drm/ast: Use managed pcim_iomap(); Fix EDID retrieval with DP501
 
  * drm/bridge: MHDP8546: HDCP support + DT bindings, Register DP AUX channel
    with userspace; Sil8620: Fix module dependencies; dw-hdmi: Add option to
    not load CEC driver; Fix stopping in drm_bridge_chain_pre_enable();
    Ti-sn65dsi86: Fix refclk handling, Break GPIO and MIPI-to-eDP into
    subdrivers, Use pm_runtime autosuspend, cleanups; It66121: Add
    driver + DT bindings; Adv7511: Support I2S IEC958 encoding; Anx7625: fix
    power-on delay; Nwi-dsi: Modesetting fixes; Cleanups
 
  * drm/bochs: Support screen blanking
 
  * drm/gma500: Cleanups
 
  * drm/gud: Cleanups
 
  * drm/i915: Use correct max source link rate for MST
 
  * drm/kmb: Cleanups
 
  * drm/meson: Disable dw-hdmi CEC driver
 
  * drm/nouveau: Pin/unpin fixes wrt to TTM; Use bo->base.size instead of
    mem->num_pages; Register AUX adapters after their connectors
 
  * drm/qxl: Fix shadow BO unpin
 
  * drm/radeon: Duplicate some DRM AGP code to uncouple from legacy drivers
 
  * drm/simpledrm: Add a generic DRM driver for simple-framebuffer devices
 
  * drm/tiny: Fix log spam if probe function gets deferred
 
  * drm/vc4: Add support for HDR-metadata property; Cleanups
 
  * drm/virtio: Create dumb BOs as guest blobs;
 
  * drm/vkms: Use managed drmm_universal_plane_alloc(); Add XRGB plane
    composition; Add overlay support
 
  * drm/vmwgfx: Enable console with DRM_FBDEV_EMULATION; Fix CPU updates
    of coherent multisample surfaces; Remove reservation semaphore; Add
    initial SVGA3 support; Support amd64; Use 1-based IDR; Use min_t();
    Cleanups
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Merge tag 'drm-misc-next-2021-05-12' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.14:

UAPI Changes:

 * drm: Disable connector force-probing for non-master clients
 * drm: Enforce consistency between IN_FORMATS property and cap + related
   driver cleanups
 * drm/amdgpu: Track devices, process info and fence info via
   /proc/<pid>/fdinfo
 * drm/ioctl: Mark AGP-related ioctls as legacy
 * drm/ttm: Provide tt_shrink file to trigger shrinker via debugfs;

Cross-subsystem Changes:

 * fbdev/efifb: Special handling of non-PCI devices
 * fbdev/imxfb: Fix error message

Core Changes:

 * drm: Add connector helper to attach HDR-metadata property and convert
   drivers
 * drm: Add connector helper to compare HDR-metadata and convert drivers
 * drm: Add conenctor helper to attach colorspace property
 * drm: Signal colorimetry in HDMI infoframe
 * drm: Support pitch for destination buffers; Add blitter function
   with generic format conversion
 * drm: Remove struct drm_device.pdev and update legacy drivers
 * drm: Remove obsolete DRM_KMS_FB_HELPER config option in core and drivers
 * drm: Remove obsolete drm_pci_alloc/drm_pci_free

 * drm/aperture: Add helpers for aperture ownership and convert drivers, replaces rsp fbdev helpers

 * drm/agp: Mark DRM AGP code as legacy and convert legacy drivers

 * drm/atomic-helpers: Cleanups

 * drm/dp: Handle downstream port counts of 0 correctly; AUX channel fixes; Use
   drm_err_*/drm_dbg_*(); Cleanups

 * drm/dp_dual_mode: Use drm_err_*/drm_dbg_*()

 * drm/dp_mst: Use drm_err_*/drm_dbg_*(); Use Extended Base Receiver Capability DPCD space

 * drm/gem-ttm-helper: Provide helper for dumb_map_offset and convert drivers

 * drm/panel: Use sysfs_emit; panel-simple: Use runtime PM, Power up panel
              when reading EDID, Cache EDID, Cleanups;
              Lms397KF04: DT bindings

 * drm/pci: Mark AGP helpers as legacy

 * drm/print: Handle NULL for DRM devices gracefully

 * drm/scheduler: Change scheduled fence track

 * drm/ttm: Don't count SG BOs against pages_limit; Warn about freeing pinned
            BOs; Fix error handling if no BO can be swapped out; Move special
            handling of non-GEM drivers into vmwgfx; Move page_alignment into
            the BO; Set drm-misc as TTM tree in MAINTAINERS; Cleanup
	    ttm_agp_backend; Add ttm_sys_manager for system domain; Cleanups

Driver Changes:

 * drm: Don't set allow_fb_modifiers explictly in drivers

 * drm/amdgpu: Pin/unpin fixes wrt to TTM; Use bo->base.size instead of
   mem->num_pages

 * drm/ast: Use managed pcim_iomap(); Fix EDID retrieval with DP501

 * drm/bridge: MHDP8546: HDCP support + DT bindings, Register DP AUX channel
   with userspace; Sil8620: Fix module dependencies; dw-hdmi: Add option to
   not load CEC driver; Fix stopping in drm_bridge_chain_pre_enable();
   Ti-sn65dsi86: Fix refclk handling, Break GPIO and MIPI-to-eDP into
   subdrivers, Use pm_runtime autosuspend, cleanups; It66121: Add
   driver + DT bindings; Adv7511: Support I2S IEC958 encoding; Anx7625: fix
   power-on delay; Nwi-dsi: Modesetting fixes; Cleanups

 * drm/bochs: Support screen blanking

 * drm/gma500: Cleanups

 * drm/gud: Cleanups

 * drm/i915: Use correct max source link rate for MST

 * drm/kmb: Cleanups

 * drm/meson: Disable dw-hdmi CEC driver

 * drm/nouveau: Pin/unpin fixes wrt to TTM; Use bo->base.size instead of
   mem->num_pages; Register AUX adapters after their connectors

 * drm/qxl: Fix shadow BO unpin

 * drm/radeon: Duplicate some DRM AGP code to uncouple from legacy drivers

 * drm/simpledrm: Add a generic DRM driver for simple-framebuffer devices

 * drm/tiny: Fix log spam if probe function gets deferred

 * drm/vc4: Add support for HDR-metadata property; Cleanups

 * drm/virtio: Create dumb BOs as guest blobs;

 * drm/vkms: Use managed drmm_universal_plane_alloc(); Add XRGB plane
   composition; Add overlay support

 * drm/vmwgfx: Enable console with DRM_FBDEV_EMULATION; Fix CPU updates
   of coherent multisample surfaces; Remove reservation semaphore; Add
   initial SVGA3 support; Support amd64; Use 1-based IDR; Use min_t();
   Cleanups

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

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YJvkD523evviED01@linux-uq9g.fritz.box
2021-05-19 09:22:56 +10:00
David Ward
fe1c97d008 drm/amd/display: Initialize attribute for hdcp_srm sysfs file
It is stored in dynamically allocated memory, so sysfs_bin_attr_init() must
be called to initialize it. (Note: "initialization" only sets the .attr.key
member in this struct; it does not change the value of any other members.)

Otherwise, when CONFIG_DEBUG_LOCK_ALLOC=y this message appears during boot:

    BUG: key ffff9248900cd148 has not been registered!

Fixes: 9037246bb2 ("drm/amd/display: Add sysfs interface for set/get srm")
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1586
Reported-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Signed-off-by: David Ward <david.ward@gatech.edu>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2021-05-13 10:46:06 -04:00
Alex Deucher
50610b74ee drm/amdgpu/display: fix build when CONFIG_DRM_AMD_DC_DCN is not defined
Fixes:
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c: In function ‘amdgpu_dm_initialize_drm_device’:
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:3726:7: error: implicit declaration of function ‘register_outbox_irq_handlers’; did you mean ‘register_hpd_handlers’? [-Werror=implicit-function-declaration]
 3726 |   if (register_outbox_irq_handlers(dm->adev)) {
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |       register_hpd_handlers

Fixes: 81927e2808 ("drm/amd/display: Support for DMUB AUX")
Reviewed-by: Jude Shih <shenshih@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Jude Shish <Jude.Shih@amd.com>
2021-05-11 22:07:00 -04:00
Alex Deucher
610e6f7ea5 drm/amdgpu/display: fix warning when CONFIG_DRM_AMD_DC_DCN is not defined
Fixes:
At top level:
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:633:13: warning: ‘dm_dmub_outbox1_low_irq’ defined but not used [-Wunused-function]
  633 | static void dm_dmub_outbox1_low_irq(void *interrupt_params)
      |             ^~~~~~~~~~~~~~~~~~~~~~~

Fixes: 81927e2808 ("drm/amd/display: Support for DMUB AUX")
Reviewed-by: Jude Shih <shenshih@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Jude Shih <Jude.Shih@amd.com>
2021-05-11 22:06:37 -04:00
Thomas Zimmermann
fd531024ba Merge drm/drm-next into drm-misc-next
Backmerging to get v5.12 fixes. Requested for vmwgfx.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
2021-05-11 15:59:18 +02:00
Alex Deucher
effbf6ca7e drm/amdgpu/display: remove an old DCN3 guard
The DCN3 guards were dropped a while ago, this one must have
snuck in in a merge or something.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-11 09:44:35 -04:00
David Ward
29b25b7067 drm/amd/display: Initialize attribute for hdcp_srm sysfs file
It is stored in dynamically allocated memory, so sysfs_bin_attr_init() must
be called to initialize it. (Note: "initialization" only sets the .attr.key
member in this struct; it does not change the value of any other members.)

Otherwise, when CONFIG_DEBUG_LOCK_ALLOC=y this message appears during boot:

    BUG: key ffff9248900cd148 has not been registered!

Fixes: 9037246bb2 ("drm/amd/display: Add sysfs interface for set/get srm")
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1586
Reported-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Signed-off-by: David Ward <david.ward@gatech.edu>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-11 09:43:41 -04:00
Fangzhi Zuo
eda8f7993d drm/amd/display: Add dc log for DP SST DSC enable/disable
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Mikita Lipski <Mikita.Lipski@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-10 18:10:18 -04:00
Zhan Liu
509b9a5b48 drm/amd/display: Avoid HPD IRQ in GPU reset state
[Why]
If GPU is in reset state, force enabling link will cause
unexpected behaviour.

[How]
Avoid handling HPD IRQ when GPU is in reset state.

Signed-off-by: Zhan Liu <zhan.liu@amd.com>
Reviewed-by: Nikola Cornij <nikola.cornij@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-10 18:09:25 -04:00
Jude Shih
81927e2808 drm/amd/display: Support for DMUB AUX
[WHY]
To process AUX transactions with DMUB using inbox1 and outbox1 mail boxes.

[How]
1) Added inbox1 command DMUB_CMD__DP_AUX_ACCESS to issue AUX commands
   to DMUB in dc_process_dmub_aux_transfer_async(). DMUB processes AUX cmd
   with DCN and sends reply back in an outbox1 message triggering an
   outbox1 interrupt to driver.
2) In existing driver implementation, AUX commands are processed
   synchronously by configuring DCN reg. But in DMUB AUX, driver sends an
   inbox1 message and waits for a conditional variable (CV) which will be
   signaled by outbox1 ISR.
3) DM will retrieve Outbox1 message and send back reply to upper layer
   and complete the AUX command

Signed-off-by: Jude Shih <shenshih@amd.com>
Reviewed-by: Hanghong Ma <Hanghong.Ma@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Wayne Lin <Wayne.Lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-10 18:06:44 -04:00
Mikita Lipski
118b4627d6 drm/amd/display: multi-eDP backlight support
[why]
Currently the assumption is that we are using a single eDP
connector so there will only be one backlight object. Need changes
to allow brightness update and reading for multiple eDP connectors.

[how]
- register a single device
- turn backlight link from a pointer to an array of pointers
- update brightness of all eDP links at the same time when request
is registered
- read brightness level only of the primary eDP panel
- turn current_backlight_pwm and targer_backlight_pwm debugfs enteries
into per connector enteries.

Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Wayne Lin <waynelin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-10 18:06:44 -04:00
Nikola Cornij
b86e7eef91 drm/amd/display: Avoid gpio conflict on MST branch
[Why]
Similar to SST branch, gpio conflict also needs to be avoided on
MST. Without doing so, there is a chance that gpio conflict will
occur if multiple gpio interrupts arrive simultaneously.

[How]
By mutex locking/unlocking &aconnector->hpd_lock,
we won't get gpio conflict when handling hpd.

Signed-off-by: Zhan Liu <zhan.liu@amd.com>
Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Acked-by: Zhan Liu <zhan.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-10 18:06:44 -04:00
Roman Li
cf8b92a756 drm/amd/display: fix potential gpu reset deadlock
[Why]
In gpu reset dc_lock acquired in dm_suspend().
Asynchronously handle_hpd_rx_irq can also be called
through amdgpu_dm_irq_suspend->flush_work, which also
tries to acquire dc_lock. That causes a deadlock.

[How]
Check if amdgpu executing reset before acquiring dc_lock.

Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Qingqing Zhuo <Qingqing.Zhuo@amd.com>
Acked-by: Wayne Lin <Wayne.Lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-10 18:06:44 -04:00
Rodrigo Siqueira
ddab8bd788 drm/amd/display: Fix two cursor duplication when using overlay
Our driver supports overlay planes, and as expected, some userspace
compositor takes advantage of these features. If the userspace is not
enabling the cursor, they can use multiple planes as they please.
Nevertheless, we start to have constraints when userspace tries to
enable hardware cursor with various planes. Basically, we cannot draw
the cursor at the same size and position on two separated pipes since it
uses extra bandwidth and DML only run with one cursor.

For those reasons, when we enable hardware cursor and multiple planes,
our driver should accept variations like the ones described below:

  +-------------+   +--------------+
  | +---------+ |   |              |
  | |Primary  | |   | Primary      |
  | |         | |   | Overlay      |
  | +---------+ |   |              |
  |Overlay      |   |              |
  +-------------+   +--------------+

In this scenario, we can have the desktop UI in the overlay and some
other framebuffer attached to the primary plane (e.g., video). However,
userspace needs to obey some rules and avoid scenarios like the ones
described below (when enabling hw cursor):

                                      +--------+
                                      |Overlay |
 +-------------+    +-----+-------+ +-|        |--+
 | +--------+  | +--------+       | | +--------+  |
 | |Overlay |  | |Overlay |       | |             |
 | |        |  | |        |       | |             |
 | +--------+  | +--------+       | |             |
 | Primary     |    | Primary     | | Primary     |
 +-------------+    +-------------+ +-------------+

 +-------------+   +-------------+
 |     +--------+  |  Primary    |
 |     |Overlay |  |             |
 |     |        |  |             |
 |     +--------+  | +--------+  |
 | Primary     |   | |Overlay |  |
 +-------------+   +-|        |--+
                     +--------+

If the userspace violates some of the above scenarios, our driver needs
to reject the commit; otherwise, we can have unexpected behavior. Since
we don't have a proper driver validation for the above case, we can see
some problems like a duplicate cursor in applications that use multiple
planes. This commit fixes the cursor issue and others by adding adequate
verification for multiple planes.

Change since V1 (Harry and Sean):
- Remove cursor verification from the equation.

Cc: Louis Li <Ching-shih.Li@amd.com>
Cc: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Cc: Harry Wentland <Harry.Wentland@amd.com>
Cc: Hersen Wu <hersenxs.wu@amd.com>
Cc: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-10 18:06:43 -04:00
Guenter Roeck
5760dcb953 drm/amd/display: Fix build warnings
Fix the following build warnings.

drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:
	In function ‘dm_update_mst_vcpi_slots_for_dsc’:
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:6242:46:
	warning: variable ‘old_con_state’ set but not used

drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:
	In function ‘amdgpu_dm_commit_cursors’:
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:7709:44:
	warning: variable ‘new_plane_state’ set but not used

The variables were introduced to be used in iterators, but not used.
Use other iterators which don't require the unused variables.

Fixes: 8ad278062d ("drm/amd/display: Disable cursors before disabling planes")
Fixes: 29b9ba74f6 ("drm/amd/display: Recalculate VCPI slots for new DSC connectors")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-10 18:06:42 -04:00
Alex Deucher
a273f315b9 drm/amdgpu/display: add documentation for dmcub_trace_event_en
Was missing when this structure was updated.

Fixes: 46a83eba27 ("drm/amd/display: Add debugfs to control DMUB trace buffer events")
Reviewed-by: Leo (Hanghong) Ma <hanghong.ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-10 18:06:42 -04:00
Maxime Ripard
72921cdf8a
drm/connector: Add helper to compare HDR metadata
All the drivers that support the HDR metadata property have a similar
function to compare the metadata from one connector state to the next,
and force a mode change if they differ.

All these functions run pretty much the same code, so let's turn it into
an helper that can be shared across those drivers.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210430094451.2145002-2-maxime@cerno.tech
2021-05-07 17:13:09 +02:00
Maxime Ripard
e057b52c1d
drm/connector: Create a helper to attach the hdr_output_metadata property
All the drivers that implement HDR output call pretty much the same
function to initialise the hdr_output_metadata property, and while the
creation of that property is in a helper, every driver uses the same
code to attach it.

Provide a helper for it as well

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210430094451.2145002-1-maxime@cerno.tech
2021-05-07 17:13:04 +02:00
Dave Airlie
0844708ac3 Merge tag 'amd-drm-fixes-5.13-2021-05-05' of https://gitlab.freedesktop.org/agd5f/linux into drm-next
amd-drm-fixes-5.13-2021-05-05:

amdgpu:
- MPO hang workaround
- Fix for concurrent VM flushes on vega/navi
- dcefclk is not adjustable on navi1x and newer
- MST HPD debugfs fix
- Suspend/resumes fixes
- Register VGA clients late in case driver fails to load
- Fix GEM leak in user framebuffer create
- Add support for polaris12 with 32 bit memory interface
- Fix duplicate cursor issue when using overlay
- Fix corruption with tiled surfaces on VCN3
- Add BO size and stride check to fix BO size verification

radeon:
- Fix off-by-one in power state parsing
- Fix possible memory leak in power state parsing

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210506033929.3875-1-alexander.deucher@amd.com
2021-05-07 12:44:51 +10:00
Rodrigo Siqueira
16e9b3e58b drm/amd/display: Fix two cursor duplication when using overlay
Our driver supports overlay planes, and as expected, some userspace
compositor takes advantage of these features. If the userspace is not
enabling the cursor, they can use multiple planes as they please.
Nevertheless, we start to have constraints when userspace tries to
enable hardware cursor with various planes. Basically, we cannot draw
the cursor at the same size and position on two separated pipes since it
uses extra bandwidth and DML only run with one cursor.

For those reasons, when we enable hardware cursor and multiple planes,
our driver should accept variations like the ones described below:

  +-------------+   +--------------+
  | +---------+ |   |              |
  | |Primary  | |   | Primary      |
  | |         | |   | Overlay      |
  | +---------+ |   |              |
  |Overlay      |   |              |
  +-------------+   +--------------+

In this scenario, we can have the desktop UI in the overlay and some
other framebuffer attached to the primary plane (e.g., video). However,
userspace needs to obey some rules and avoid scenarios like the ones
described below (when enabling hw cursor):

                                      +--------+
                                      |Overlay |
 +-------------+    +-----+-------+ +-|        |--+
 | +--------+  | +--------+       | | +--------+  |
 | |Overlay |  | |Overlay |       | |             |
 | |        |  | |        |       | |             |
 | +--------+  | +--------+       | |             |
 | Primary     |    | Primary     | | Primary     |
 +-------------+    +-------------+ +-------------+

 +-------------+   +-------------+
 |     +--------+  |  Primary    |
 |     |Overlay |  |             |
 |     |        |  |             |
 |     +--------+  | +--------+  |
 | Primary     |   | |Overlay |  |
 +-------------+   +-|        |--+
                     +--------+

If the userspace violates some of the above scenarios, our driver needs
to reject the commit; otherwise, we can have unexpected behavior. Since
we don't have a proper driver validation for the above case, we can see
some problems like a duplicate cursor in applications that use multiple
planes. This commit fixes the cursor issue and others by adding adequate
verification for multiple planes.

Change since V1 (Harry and Sean):
- Remove cursor verification from the equation.

Cc: Louis Li <Ching-shih.Li@amd.com>
Cc: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Cc: Harry Wentland <Harry.Wentland@amd.com>
Cc: Hersen Wu <hersenxs.wu@amd.com>
Cc: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-05-04 17:35:52 -04:00
Nikola Cornij
98025a62cb drm/dp_mst: Use Extended Base Receiver Capability DPCD space
[why]
DP 1.4a spec mandates that if DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT is
set, Extended Base Receiver Capability DPCD space must be used. Without
doing that, the three DPCD values that differ will be wrong, leading to
incorrect or limited functionality. MST link rate, for example, could
have a lower value. Also, Synaptics quirk wouldn't work out well when
Extended DPCD was not read, resulting in no DSC for such hubs.

[how]
Modify MST topology manager to use the values from Extended DPCD where
applicable.

To prevent regression on the sources that have a lower maximum link rate
capability than MAX_LINK_RATE from Extended DPCD, have the drivers
supply maximum lane count and rate at initialization time.

This also reverts commit 2dcab875e7 ("Revert drm/dp_mst: Retrieve
extended DPCD caps for topology manager"), brining the change back to the
original commit ad44c03208 ("drm/dp_mst: Retrieve extended DPCD caps for
topology manager").

Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210429221151.22020-2-nikola.cornij@amd.com
2021-04-29 19:11:27 -04:00
Mikita Lipski
3cbae5abfa drm/amd/display: fix wrong statement in mst hpd debugfs
[why]
Previous statement would always evaluate to true
making it meaningless
[how]
Just check if a connector is MST by checking if its port exists.

Fixes: 41efcd3879 ("drm/amd/display: Add MST capability to trigger_hotplug interface")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Wayne Lin <waynelin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-04-28 23:56:14 -04:00
Harry Wentland
d89f6048bd drm/amd/display: Reject non-zero src_y and src_x for video planes
[Why]
This hasn't been well tested and leads to complete system hangs on DCN1
based systems, possibly others.

The system hang can be reproduced by gesturing the video on the YouTube
Android app on ChromeOS into full screen.

[How]
Reject atomic commits with non-zero drm_plane_state.src_x or src_y values.

v2:
 - Add code comment describing the reason we're rejecting non-zero
   src_x and src_y
 - Drop gerrit Change-Id
 - Add stable CC
 - Based on amd-staging-drm-next

v3: removed trailing whitespace

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Cc: nicholas.kazlauskas@amd.com
Cc: amd-gfx@lists.freedesktop.org
Cc: alexander.deucher@amd.com
Cc: Roman.Li@amd.com
Cc: hersenxs.wu@amd.com
Cc: danny.wang@amd.com
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2021-04-28 23:45:22 -04:00
Mikita Lipski
abf1f863e0 drm/amd/display: fix wrong statement in mst hpd debugfs
[why]
Previous statement would always evaluate to true
making it meaningless
[how]
Just check if a connector is MST by checking if its port exists.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Wayne Lin <waynelin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-04-28 23:35:50 -04:00
Stylon Wang
b7cc1312c1 drm/amd/display: Expose internal display flag via debugfs
[Why & How]
Add a per-connector debugfs entry to expose internal display flag,
which is indication that the display is "internally connected"
and not hotpluggable.

Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Reviewed-by: Wayne Lin <Wayne.Lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-04-28 23:35:50 -04:00
Lyude Paul
6cba3fe433 drm/dp: Add backpointer to drm_device in drm_dp_aux
This is something that we've wanted for a while now: the ability to
actually look up the respective drm_device for a given drm_dp_aux struct.
This will also allow us to transition over to using the drm_dbg_*() helpers
for debug message printing, as we'll finally have a drm_device to reference
for doing so.

Note that there is one limitation with this - because some DP AUX adapters
exist as platform devices which are initialized independently of their
respective DRM devices, one cannot rely on drm_dp_aux->drm_dev to always be
non-NULL until drm_dp_aux_register() has been called. We make sure to point
this out in the documentation for struct drm_dp_aux.

v3:
* Add WARN_ON_ONCE() to drm_dp_aux_register() if drm_dev isn't filled out

Signed-off-by: Lyude Paul <lyude@redhat.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210423184309.207645-4-lyude@redhat.com
Reviewed-by: Dave Airlie <airlied@redhat.com>
2021-04-27 18:43:42 -04:00