Mario Limonciello b96ab339ee drm/amd/display: Restore guard against default backlight value < 1 nit ... Mark reports that brightness is not restored after Xorg dpms screen blank. This behavior was introduced by commit d9e865826c ("drm/amd/display: Simplify brightness initialization") which dropped the cached backlight value in display code, but also removed code for when the default value read back was less than 1 nit. Restore this code so that the backlight brightness is restored to the correct default value in this circumstance. Reported-by: Mark Herbert <mark.herbert42@gmail.com> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3031 Cc: stable@vger.kernel.org Cc: Camille Cho <camille.cho@amd.com> Cc: Krunoslav Kovac <krunoslav.kovac@amd.com> Cc: Hamza Mahfooz <hamza.mahfooz@amd.com> Fixes: d9e865826c ("drm/amd/display: Simplify brightness initialization") Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>		2023-12-11 12:41:05 -05:00
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accessories	drm/amd/display: Update DP HPO MSA with colorimetry from test request	2023-11-07 11:17:18 -05:00
hwss	drm/amd/display: switch DC over to the new DRM logging macros	2023-09-26 17:00:21 -04:00
protocols	drm/amd/display: Restore guard against default backlight value < 1 nit	2023-12-11 12:41:05 -05:00
Makefile	drm/amd/display: Drop unused link FPGA code	2023-09-26 16:54:37 -04:00
link_detection.c	drm/amd/display: Simplify brightness initialization	2023-11-29 18:01:05 -05:00
link_detection.h	drm/amd/display: convert link.h functions to function pointer style	2023-03-14 15:35:03 -04:00
link_dpms.c	drm/amd/display: Simplify brightness initialization	2023-11-29 18:01:05 -05:00
link_dpms.h	drm/amd/display: convert link.h functions to function pointer style	2023-03-14 15:35:03 -04:00
link_factory.c	drm/amd/display: switch DC over to the new DRM logging macros	2023-09-26 17:00:21 -04:00
link_factory.h	drm/amd/display: convert link.h functions to function pointer style	2023-03-14 15:35:03 -04:00
link_hwss_hpo_frl.c	…
link_resource.c	drm/amd/display: move public dc link function implementation to dc_link_exports	2023-02-14 16:06:28 -05:00
link_resource.h	drm/amd/display: convert link.h functions to function pointer style	2023-03-14 15:35:03 -04:00
link_validation.c	drm/amd/display: Add link encoding to timing BW calculation parameters	2023-07-18 11:15:51 -04:00
link_validation.h	drm/amd/display: Add function pointer for validate bw usb4	2023-03-22 00:59:45 -04:00