diff options
| author | Swapnil Patel <swapnil.patel@amd.com> | 2023-10-04 15:58:57 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-12-08 08:52:25 +0100 |
| commit | 86cd446a7727f92db999b55c66e9a59cf7a0545a (patch) | |
| tree | 627e98a6fa6bbcfed06812b2695b36ff1e99d125 | |
| parent | 5e03e4a4911d9f9aaa49b5b3f9f02fa13dd1078a (diff) | |
drm/amd/display: Reduce default backlight min from 5 nits to 1 nits
[ Upstream commit 5edb7cdff85af8f8c5fda5b88310535ab823f663 ]
[Why & How]
Currently set_default_brightness_aux function uses 5 nits as lower limit
to check for valid default_backlight setting. However some newer panels
can support even lower default settings
Reviewed-by: Agustin Gutierrez <agustin.gutierrez@amd.com>
Acked-by: Roman Li <roman.li@amd.com>
Signed-off-by: Swapnil Patel <swapnil.patel@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Stable-dep-of: d9e865826c20 ("drm/amd/display: Simplify brightness initialization")
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c index e1708c296b7d..a602202610e0 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c @@ -281,8 +281,8 @@ bool set_default_brightness_aux(struct dc_link *link) if (link && link->dpcd_sink_ext_caps.bits.oled == 1) { if (!read_default_bl_aux(link, &default_backlight)) default_backlight = 150000; - // if < 5 nits or > 5000, it might be wrong readback - if (default_backlight < 5000 || default_backlight > 5000000) + // if < 1 nits or > 5000, it might be wrong readback + if (default_backlight < 1000 || default_backlight > 5000000) default_backlight = 150000; // return edp_set_backlight_level_nits(link, true, |