linux_dsm_epyc7002/drivers/gpu/drm
Lyude Paul 5eae8ca373 Revert "drm/i915: Don't use VBT for detecting DPCD backlight controls"
This reverts commit d2a4bb6f8b.

So, turns out that this ended up just breaking things. While many
laptops incorrectly advertise themselves as supporting PWM backlight
controls, they actually will only work with DPCD backlight controls.
Unfortunately, it also seems there are a number of systems which
advertise DPCD backlight controls in their eDP DPCD but don't actually
support them. Talking with some laptop manufacturers has shown it might
be possible to probe this support via the EDID (!?!?) but I haven't been
able to confirm that this would work on any other manufacturer's
systems.

So in the mean time, we'll just revert this commit for now and go back
to the old way of doing things.

Fixes: d2a4bb6f8b ("drm/i915: Don't use VBT for detecting DPCD backlight controls")
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200204192823.111404-2-lyude@redhat.com
2020-02-07 13:06:54 +02:00
..
amd drm/amdgpu/display: use msleep rather than udelay for HDCP 2019-12-19 09:04:13 +10:00
arc DRM: ARC: PGU: add ARGB8888 format to supported format list 2019-12-16 13:53:05 +03:00
arm drm-misc-next for v5.6: 2020-01-03 11:43:44 +10:00
armada drm: constify fb ops across all drivers 2019-12-05 10:57:42 +02:00
aspeed
ast drm/vram-helper: Remove BO device from public interface 2020-01-07 11:53:19 +01:00
atmel-hlcdc Revert "drm: atmel-hlcdc: enable sys_clk during initalization." 2020-01-06 19:54:27 +01:00
bochs drm/bochs: Remove unneeded semicolon 2019-12-16 12:39:50 +01:00
bridge drm/bridge: Patch atomic hooks to take a drm_bridge_state 2020-01-07 10:10:59 +01:00
cirrus
etnaviv drm-misc-next for v5.6: 2020-01-03 11:43:44 +10:00
exynos drm-misc-next for v5.6: 2019-12-17 13:57:54 +01:00
fsl-dcu drm/panel: decouple connector from drm_panel 2019-12-09 22:57:26 +01:00
gma500 drm/gma500: fix null dereference of pointer fb before null check 2019-12-19 15:33:40 +01:00
hisilicon drm/vram-helper: Remove BO device from public interface 2020-01-07 11:53:19 +01:00
i2c
i810 drm/i810: Don't include <drm/drm_pci.h> 2019-12-05 08:44:12 +01:00
i915 Revert "drm/i915: Don't use VBT for detecting DPCD backlight controls" 2020-02-07 13:06:54 +02:00
imx drm/panel: decouple connector from drm_panel 2019-12-09 22:57:26 +01:00
ingenic gpu/drm: ingenic: Add support for the JZ4770 2019-12-14 19:26:55 +01:00
lib
lima drm/lima: Fix Kconfig indentation 2019-11-20 17:40:32 +01:00
mcde drm-misc-next for v5.6: 2020-01-03 11:43:44 +10:00
mediatek drm-misc-next for v5.6: 2020-01-03 11:43:44 +10:00
meson drm: meson: Remove unneeded semicolon 2020-01-06 15:56:23 +01:00
mga drm/mga: Don't include <drm/drm_pci.h> 2019-12-05 08:44:16 +01:00
mgag200 drm/mgag200: Add module parameter to pin all buffers at offset 0 2020-01-07 11:53:19 +01:00
msm drm-misc-next for v5.6: 2020-01-03 11:43:44 +10:00
mxsfb drm/panel: decouple connector from drm_panel 2019-12-09 22:57:26 +01:00
nouveau drm-misc-next for v5.6: 2019-12-17 13:57:54 +01:00
omapdrm drm-misc-next for v5.6: 2019-12-17 13:57:54 +01:00
panel drm/panel: add panel driver for Leadtek LTK500HD1829 2020-01-04 16:46:01 +01:00
panfrost drm-misc-next for v5.6: 2019-12-17 13:57:54 +01:00
pl111 drm: get drm_bridge_panel connector via helper 2019-12-09 22:57:26 +01:00
qxl drm/qxl: Complete exception handling in qxl_device_init() 2019-11-29 13:09:11 +01:00
r128 drm/r128: Don't include <drm/drm_pci.h> 2019-12-05 08:44:23 +01:00
radeon Merge tag 'drm-next-5.6-2019-12-11' of git://people.freedesktop.org/~agd5f/linux into drm-next 2019-12-17 18:47:46 +01:00
rcar-du drm/bridge: Patch atomic hooks to take a drm_bridge_state 2020-01-07 10:10:59 +01:00
rockchip drm: rockchip: rk3066_hdmi: set edid fifo address 2020-01-06 12:22:29 +01:00
savage drm/savage: Don't include <drm/drm_pci.h> 2019-12-05 08:44:34 +01:00
scheduler drm-misc-next for v5.6: 2019-12-17 13:57:54 +01:00
selftests drm/modes: parse_cmdline: Add support for specifying panel_orientation (v2) 2019-12-16 12:13:18 +01:00
shmobile
sis drm/sis: Don't include <drm/drm_pci.h> 2019-12-05 08:44:55 +01:00
sti drm/panel: decouple connector from drm_panel 2019-12-09 22:57:26 +01:00
stm drm/stm: ltdc: move pinctrl to encoder mode set 2019-12-20 13:30:42 +01:00
sun4i drm-misc-next for v5.6: 2020-01-03 11:43:44 +10:00
tdfx drm/tdfx: Don't include <drm/drm_pci.h> 2019-12-05 08:45:01 +01:00
tegra drm-misc-next for v5.6: 2019-12-17 13:57:54 +01:00
tilcdc drm/tilcdc: Remove obsolete bundled tilcdc tfp410 driver 2019-12-16 10:45:43 +02:00
tiny Merge tag 'topic/drm-mipi-dsi-dsc-updates-2019-11-11' of git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next-queued 2019-11-20 15:54:38 +02:00
ttm drm-misc-next for v5.6: 2019-12-17 13:57:54 +01:00
tve200 drm: get drm_bridge_panel connector via helper 2019-12-09 22:57:26 +01:00
udl drm/udl: Remove udl_fb.c 2019-12-11 17:02:17 +01:00
v3d Linux 5.4-rc7 2019-11-14 05:53:10 +10:00
vboxvideo drm/vboxvideo: Use drm_gem_fb_create_with_dirty instead of drm_gem_fb_create 2019-10-29 13:10:07 +01:00
vc4 drm/vc4: Use dma_resv locking wrappers 2019-12-17 17:26:08 +01:00
vgem
via drm/via: Don't include <drm/drm_pci.h> 2019-12-05 08:45:13 +01:00
virtio drm/virtio: move drm_connector_to_virtio_gpu_output to virtgpu_display 2019-12-19 07:13:46 +01:00
vkms drm/vkms: Fix typo and preposion in function documentation 2019-12-05 18:55:55 -05:00
vmwgfx drm-misc-next for v5.6: 2019-12-17 13:57:54 +01:00
xen drm/xen: Simplify fb_create 2019-11-19 22:25:55 +01:00
zte
drm_agpsupport.c drm: use DIV_ROUND_UP helper macro for calculations 2019-11-04 18:17:36 +01:00
drm_atomic_helper.c drm/bridge: Add an ->atomic_check() hook 2020-01-07 10:11:15 +01:00
drm_atomic_state_helper.c drm: Add __drm_atomic_helper_crtc_state_reset() & co. 2019-12-18 16:47:34 +02:00
drm_atomic_uapi.c drm/atomic: Spell CRTC consistently 2019-12-22 11:13:00 +01:00
drm_atomic.c drm/bridge: Add a drm_bridge_state object 2020-01-07 10:10:49 +01:00
drm_auth.c
drm_blend.c
drm_bridge.c drm/bridge: Add the necessary bits to support bus format negotiation 2020-01-07 10:11:34 +01:00
drm_bufs.c
drm_cache.c
drm_client_modeset.c drm/fbdev: Fallback to non tiled mode if all tiles not present 2019-12-29 23:55:23 -08:00
drm_client.c drm/client: convert to drm device based logging 2019-12-19 15:52:44 +02:00
drm_color_mgmt.c drm: Inline drm_color_lut_extract() 2019-11-29 21:29:17 +02:00
drm_connector.c drm main pull for 5.5-rc1 2019-11-27 17:45:48 -08:00
drm_context.c
drm_crtc_helper_internal.h
drm_crtc_helper.c drm/crtc-helper: drm_connector_get_single_encoder prototype is missing 2019-12-03 17:42:57 +01:00
drm_crtc_internal.h
drm_crtc.c
drm_damage_helper.c
drm_debugfs_crc.c
drm_debugfs.c
drm_dma.c
drm_dp_aux_dev.c
drm_dp_cec.c
drm_dp_dual_mode_helper.c
drm_dp_helper.c
drm_dp_mst_topology_internal.h
drm_dp_mst_topology.c drm-misc-next for v5.6: 2019-12-17 13:57:54 +01:00
drm_drv.c drm: remove duplicate check on parent and avoid BUG_ON 2019-12-17 17:26:08 +01:00
drm_dsc.c
drm_dumb_buffers.c
drm_edid_load.c
drm_edid.c drm: Fix a couple of typos, punctation and whitespace issues 2019-12-22 11:09:46 +01:00
drm_encoder_slave.c
drm_encoder.c drm/bridge: Make the bridge chain a double-linked list 2019-12-09 10:03:01 +01:00
drm_fb_cma_helper.c
drm_fb_helper.c Merge drm/drm-next into drm-intel-next-queued 2020-01-09 17:19:12 +02:00
drm_file.c i915 features for v5.6: 2019-12-27 15:25:04 +10:00
drm_flip_work.c
drm_format_helper.c
drm_fourcc.c drm/fourcc: Fill out all block sizes for P210 2019-11-28 11:19:32 +01:00
drm_framebuffer.c
drm_gem_cma_helper.c
drm_gem_framebuffer_helper.c drm/gem-fb-helper: convert to drm device based logging 2019-12-19 15:55:10 +02:00
drm_gem_shmem_helper.c drm: call drm_gem_object_funcs.mmap with fake offset 2019-12-06 11:18:11 +01:00
drm_gem_ttm_helper.c drm/ttm: fix mmap refcounting 2019-11-15 08:00:08 +01:00
drm_gem_vram_helper.c drm/vram-helper: Support struct drm_driver.gem_create_object 2020-01-07 11:53:19 +01:00
drm_gem.c drm-misc-next for v5.6: 2019-12-17 13:57:54 +01:00
drm_hashtab.c
drm_hdcp.c
drm_internal.h drm/pci: Only build drm_pci.c if CONFIG_PCI is set 2019-12-05 08:43:14 +01:00
drm_ioc32.c
drm_ioctl.c drm: drop DRM_AUTH from PRIME_TO/FROM_HANDLE ioctls 2019-12-02 16:52:15 +00:00
drm_irq.c
drm_kms_helper_common.c
drm_lease.c
drm_legacy_misc.c
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dbi.c drm/mipi_dbi: Fix off-by-one bugs in mipi_dbi_blank() 2020-01-02 15:35:56 +01:00
drm_mipi_dsi.c drm/dsi: add helpers for DSI compression mode and PPS packets 2019-11-07 15:00:16 +02:00
drm_mm.c
drm_mode_config.c drm/modeset: Prime modeset lock vs dma_resv 2019-11-21 11:03:31 +01:00
drm_mode_object.c drm/property: Enforce more lifetime rules 2019-11-04 18:17:36 +01:00
drm_modes.c drm/modes: parse_cmdline: Explicitly memset the passed in drm_cmdline_mode struct 2019-12-16 12:13:18 +01:00
drm_modeset_helper.c
drm_modeset_lock.c
drm_of.c drm: of: Add drm_of_lvds_get_dual_link_pixel_order 2019-12-18 02:40:16 +02:00
drm_panel_orientation_quirks.c
drm_panel.c drm/drm_panel: Fix EXPORT of drm_panel_of_backlight() one more time 2019-12-17 20:39:33 +01:00
drm_pci.c drm/pci: Hide legacy PCI functions from non-legacy code 2019-12-05 08:44:04 +01:00
drm_plane_helper.c
drm_plane.c
drm_prime.c drm: share address space for dma bufs 2019-12-06 11:18:11 +01:00
drm_print.c drm/print: convert debug category macros into an enum 2019-11-14 14:08:57 +02:00
drm_probe_helper.c drm: Stop accessing encoder->bridge directly 2019-12-09 10:02:45 +01:00
drm_property.c drm: limit to INT_MAX in create_blob ioctl 2019-12-04 19:44:13 -08:00
drm_rect.c drm/rect: update kerneldoc for drm_rect_clip_scaled() 2019-11-28 13:15:43 +01:00
drm_scatter.c
drm_scdc_helper.c
drm_self_refresh_helper.c drm/atomic: fix self-refresh helpers crtc state dereference 2019-11-06 13:00:21 -05:00
drm_simple_kms_helper.c
drm_syncobj.c
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_vblank.c
drm_vm.c
drm_vma_manager.c
drm_vram_helper_common.c
drm_writeback.c
Kconfig i915 features for v5.6: 2019-12-27 15:25:04 +10:00
Makefile drm/pci: Only build drm_pci.c if CONFIG_PCI is set 2019-12-05 08:43:14 +01:00