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fb1b272dbf
linux/drivers/gpu/drm
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James Lin fb1b272dbf drm/amd/display: Fall back to overlay cursor on dcn4x when top plane doesn't fill CRTC 
[why]
amdgpu_dm_crtc_get_cursor_mode() returns DM_CURSOR_NATIVE_MODE early and
unconditionally for dcn4.x. That early return was added because these
ASICs no longer have the cursor-on-scaled-plane or cursor-on-yuv-plane
restrictions of older DCN, so native cursor is fine in those cases.
However, it also bypasses the "does the top plane fill the CRTC?" (hole)
evaluation further down. When the top/primary plane does not cover the
whole CRTC, the cursor must fall back to an overlay plane so it is
composited over the uncovered region; keeping the native cursor there
produces an incorrect result. As a consequence
igt@amdgpu/amd_cursor_overlay@non-full, which verifies exactly this
native->overlay fallback, fails on dcn42.

[how]
Change unconditional early return with a skip_fmt_scale_restrictions flag.
For dcn4.x keep skipping the YUV / active-color-pipeline / different-scale
overlay triggers (genuinely unnecessary on this hardware), but fall
through to the existing entire_crtc_covered check so a top plane that does
not fill the CRTC still selects DM_CURSOR_OVERLAY_MODE. Native mode is
still chosen when the plane covers the whole CRTC.

Update the amdgpu_dm_cursor KUnit tests accordingly: exercise the dcn4x
path with a full atomic state fixture (full coverage -> native) and add a
dcn4x hole case (top plane does not fill the CRTC -> overlay).

Reviewed-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: James Lin <PingLei.Lin@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-08-25 18:29:58 -04:00
..
adp drm/adp: mipi: Add atomic bridge state handlers 2026-07-15 09:45:46 +02:00
amd drm/amd/display: Fall back to overlay cursor on dcn4x when top plane doesn't fill CRTC 2026-08-25 18:29:58 -04:00
arm drm/arm/komeda: fix error handling for clk_prepare_enable() and callers 2026-06-30 15:26:54 +01:00
armada
aspeed Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files) 2026-07-03 07:38:17 +02:00
ast
atmel-hlcdc
bridge Linux 7.2 2026-08-20 10:58:44 +10:00
ci Merge tag 'drm-msm-next-2026-05-30' of https://gitlab.freedesktop.org/drm/msm into drm-next 2026-06-04 06:41:22 +10:00
clients Linux 7.2 2026-08-20 10:58:44 +10:00
display Linux 7.2 2026-08-20 10:58:44 +10:00
etnaviv Linux 7.2 2026-08-20 10:58:44 +10:00
exynos drm/exynos: hdmi: take i2c adapter module reference 2026-08-02 14:54:06 +09:00
fsl-dcu drm/panel: of_drm_find_panel() return a counted reference 2026-07-20 15:07:22 +02:00
gma500 Linux 7.2 2026-08-20 10:58:44 +10:00
gud
hisilicon drm-misc-next for 7.3: 2026-07-07 09:34:04 +10:00
hyperv drm/hyperv: Move MODULE_DEVICE_TABLE to the device_id arrays 2026-07-20 10:33:49 -04:00
i915 Merge tag 'drm-intel-next-2026-07-28' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next 2026-08-01 06:05:01 +10:00
imagination Linux 7.2 2026-08-20 10:58:44 +10:00
imx drm: fix missing header include for drm_panel_put() 2026-07-22 13:50:27 +02:00
ingenic drm/panel: of_drm_find_panel() return a counted reference 2026-07-20 15:07:22 +02:00
kmb
lima Linux 7.2 2026-08-20 10:58:44 +10:00
logicvc drm/panel: of_drm_find_panel() return a counted reference 2026-07-20 15:07:22 +02:00
loongson drm: Consistently define pci_device_ids using named initializers 2026-06-17 11:07:01 +02:00
mcde drm/panel: of_drm_find_panel() return a counted reference 2026-07-20 15:07:22 +02:00
mediatek Linux 7.2 2026-08-20 10:58:44 +10:00
meson drm-misc-next for 7.3: 2026-07-07 09:34:04 +10:00
mgag200 drm: Consistently define pci_device_ids using named initializers 2026-06-17 11:07:01 +02:00
msm Merge tag 'drm-msm-next-2026-08-01' of https://gitlab.freedesktop.org/drm/msm into drm-next 2026-08-24 11:21:12 +10:00
mxsfb drm: fix missing header include for drm_panel_put() 2026-07-22 13:50:27 +02:00
nouveau Linux 7.2 2026-08-20 10:58:44 +10:00
nova drm: nova: Use drm::Device<Registered> to access the parent bus device 2026-07-12 16:06:43 +02:00
omapdrm drm/omap: dsi: Do not copy isr table 2026-08-04 14:07:15 +03:00
panel Linux 7.2 2026-08-20 10:58:44 +10:00
panfrost Linux 7.2 2026-08-20 10:58:44 +10:00
panthor Linux 7.2 2026-08-20 10:58:44 +10:00
pl111 drm/panel: of_drm_find_panel() return a counted reference 2026-07-20 15:07:22 +02:00
qxl drm/qxl: remove dependency on DRM simple helpers 2026-07-10 15:08:57 +02:00
radeon drm/radeon: fix internal display on iMac11, 1 (RV770/DCE3.1) 2026-08-19 10:12:25 -04:00
renesas drm/panel: of_drm_find_panel() return a counted reference 2026-07-20 15:07:22 +02:00
rockchip drm/panel: of_drm_find_panel() return a counted reference 2026-07-20 15:07:22 +02:00
scheduler Linux 7.2 2026-08-20 10:58:44 +10:00
sitronix
solomon drm/ssd130x: Add per-family update backlight logic 2026-08-06 14:55:55 +02:00
sprd Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files) 2026-07-03 07:38:17 +02:00
sti drm/panel: of_drm_find_panel() return a counted reference 2026-07-20 15:07:22 +02:00
stm drm: fix missing header include for drm_panel_put() 2026-07-22 13:50:27 +02:00
sun4i drm/sun4i: hdmi-phy: Fix H6 8-bit MPLL config at 594 MHz 2026-08-06 14:22:50 +08:00
sysfb drm/sysfb: simpledrm: Read panel orientation from DT node 2026-07-08 13:44:40 +02:00
tegra Linux 7.2 2026-08-20 10:58:44 +10:00
tests Linux 7.2 2026-08-20 10:58:44 +10:00
tidss drm/panel: of_drm_find_panel() return a counted reference 2026-07-20 15:07:22 +02:00
tilcdc Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files) 2026-07-03 07:38:17 +02:00
tiny Linux 7.2 2026-08-20 10:58:44 +10:00
ttm Linux 7.2 2026-08-20 10:58:44 +10:00
tve200 drm/tve200: add OF module alias for autoloading 2026-07-24 09:21:03 +02:00
tyr drm/tyr: add Microcontroller Unit (MCU) booting 2026-07-31 12:36:27 +00:00
udl
v3d Linux 7.2 2026-08-20 10:58:44 +10:00
vboxvideo
vc4 Linux 7.2 2026-08-20 10:58:44 +10:00
verisilicon drm/verisilicon: Switch to atomic_create_state 2026-06-22 11:24:55 +02:00
vgem
virtio Linux 7.2 2026-08-20 10:58:44 +10:00
vkms
vmwgfx drm/vmwgfx: validate external BO copy bounds for both stride paths 2026-07-27 11:29:24 -04:00
xe Couple commits cleaning up error messages. 2026-08-24 11:40:23 +10:00
xen
xlnx drm/xlnx: zynqmp_dp: Switch to atomic_create_state 2026-06-22 11:24:56 +02:00
drm_atomic_helper.c drm/atomic-helper: Add HDMI bridge output bus formats helper 2026-06-09 21:03:50 +01:00
drm_atomic_state_helper.c drm/bridge: Remove atomic_reset support 2026-06-22 11:25:00 +02:00
drm_atomic_uapi.c drm-misc-next for 7.3: 2026-07-06 17:38:49 +10:00
drm_atomic.c drm/bridge: rename drm_for_each_bridge_in_chain_scoped() to drm_for_each_bridge_in_chain() 2026-07-14 17:55:51 +02:00
drm_auth.c
drm_blend.c drm/drm_blend: allow blend mode property without PREMULTI 2026-07-14 19:22:48 +01:00
drm_bridge_helper.c
drm_bridge.c drm/bridge: Remove legacy bridge callback support 2026-07-15 09:46:16 +02:00
drm_buddy.c gpu/buddy: Track per-order used blocks with a scoreboard 2026-05-29 13:44:01 +02:00
drm_cache.c
drm_client_event.c
drm_client_modeset.c
drm_client_sysrq.c
drm_client.c
drm_color_mgmt.c mm.git review status for mm-hotfixes-stable..mm-nonmm-stable 2026-06-21 13:20:19 -07:00
drm_colorop.c drm-misc-next for 7.3: 2026-07-06 17:38:49 +10:00
drm_connector.c drm-misc-next for 7.3: 2026-07-06 17:38:49 +10:00
drm_crtc_helper_internal.h
drm_crtc_helper.c
drm_crtc_internal.h
drm_crtc.c
drm_damage_helper.c
drm_debugfs_crc.c
drm_debugfs.c
drm_displayid_internal.h Merge drm/drm-next into drm-misc-next 2026-06-30 10:16:00 +02:00
drm_displayid.c
drm_draw_internal.h drm/draw: Remove unused helper drm_draw_get_char_bitmap() 2026-06-04 09:44:11 +02:00
drm_draw.c
drm_drv.c DRM Rust changes for v7.3-rc1 2026-08-10 14:48:11 +10:00
drm_dumb_buffers.c drm-misc-next for 7.3: 2026-07-06 17:38:49 +10:00
drm_edid_load.c
drm_edid.c Merge drm/drm-next into drm-misc-next 2026-06-30 10:16:00 +02:00
drm_eld.c
drm_encoder.c
drm_exec.c drm/exec: Use kvmalloc_objs for exec->objects 2026-07-07 23:16:33 +08:00
drm_fb_dma_helper.c
drm_fb_helper.c Linux 7.2 2026-08-20 10:58:44 +10:00
drm_fbdev_dma.c
drm_fbdev_shmem.c
drm_fbdev_ttm.c
drm_file.c
drm_flip_work.c
drm_format_helper.c
drm_format_internal.h
drm_fourcc.c
drm_framebuffer.c
drm_gem_atomic_helper.c
drm_gem_dma_helper.c
drm_gem_framebuffer_helper.c
drm_gem_shmem_helper.c Linux 7.2 2026-08-20 10:58:44 +10:00
drm_gem_ttm_helper.c
drm_gem_vram_helper.c
drm_gem.c drm-misc-next for 7.3: 2026-07-06 17:38:49 +10:00
drm_gpusvm.c Linux 7.2 2026-08-20 10:58:44 +10:00
drm_gpuvm.c drm/gpuvm: Remove dead code 2026-07-03 23:32:55 +02:00
drm_internal.h
drm_ioc32.c
drm_ioctl.c drm: Guard DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE 2026-07-07 14:57:10 +02:00
drm_kms_helper_common.c
drm_lease.c
drm_managed.c drm/managed: use special gfp_t format specifier 2026-05-28 21:04:52 -07:00
drm_mipi_dbi.c
drm_mipi_dsi.c
drm_mm.c
drm_mode_config.c drm: use drm_warn() in validate_blend_mode_for_alpha_formats() 2026-08-14 14:43:23 +01:00
drm_mode_object.c
drm_modes.c drm/modes: Add DRM_MODE_MATCH_TIMINGS_VRR 2026-06-24 18:54:10 +03:00
drm_modeset_helper.c
drm_modeset_lock.c
drm_of.c drm/panel: of_drm_find_panel() return a counted reference 2026-07-20 15:07:22 +02:00
drm_pagemap_util.c
drm_pagemap.c Revert "drm/pagemap: Guard HPAGE_PMD_ORDER use with CONFIG_ARCH_ENABLE_THP_MIGRATION" 2026-07-24 08:02:14 +02:00
drm_panel_backlight_quirks.c drm/amd/display: Force PWM backlight on Lenovo Legion 5 15ARH05 2026-07-17 17:41:15 -04:00
drm_panel_orientation_quirks.c
drm_panel.c drm/panel: find_panel_by_fwnode() return a counted reference 2026-07-20 15:08:08 +02:00
drm_panic_qr.rs
drm_panic.c drm/panic: Look up glyph shape with font helper 2026-06-04 09:44:10 +02:00
drm_pci.c
drm_plane_helper.c
drm_plane.c
drm_prime.c
drm_print.c drm/print: describe 6th & 9th bit of drm.debug 2026-06-03 11:24:52 +02:00
drm_privacy_screen_x86.c
drm_privacy_screen.c
drm_probe_helper.c drm: Send per-connector hotplug events 2026-07-21 17:06:42 +01:00
drm_property.c
drm_ras_genl_family.c
drm_ras_nl.c
drm_ras_nl.h
drm_ras.c
drm_rect.c
drm_self_refresh_helper.c
drm_simple_kms_helper.c
drm_suballoc.c
drm_syncobj.c drm/syncobj: Use kmalloc_objs for chains 2026-07-07 23:26:39 +08:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_vblank_helper.c
drm_vblank_work.c
drm_vblank.c
drm_vma_manager.c
drm_writeback.c drm: writeback: Document behaviour for framebuffer size mismatch 2026-06-15 22:28:26 +01:00
Kconfig
Kconfig.debug
Makefile gpu: build nova-core and nova-drm from drivers/gpu/Makefile 2026-06-29 11:28:38 +02:00