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| author | Camille Cho <camille.cho@amd.com> | 2023-11-16 16:19:25 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-01-03 10:31:52 -0500 |
| commit | ee8ed2506603629f2706712a5282921a115a8da6 (patch) | |
| tree | 7389889104824d120bb46e902a66ae336c1d3e84 /drivers/gpu/drm/amd/display/dc/link/protocols | |
| parent | aa5dc05340eb97486a631ce6bccb8d020bf6b56b (diff) | |
| download | linux-stable-ee8ed2506603629f2706712a5282921a115a8da6.tar.gz linux-stable-ee8ed2506603629f2706712a5282921a115a8da6.tar.bz2 linux-stable-ee8ed2506603629f2706712a5282921a115a8da6.zip | |
drm/amd/display: Correctly restore user_level
[Why]
BL1_PWM_USER_LEVEL is meant for the user brightness level setting from
OS. However, we update it along with other ABM levels to the real PWM
value which could be ABMed.
[How]
Driver to cache and restore the user brightness level setting so that
DMUB can retrieve the last user setting in ABM config initialization.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Anthony Koo <anthony.koo@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Camille Cho <camille.cho@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/link/protocols')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c | 3 |
1 files changed, 3 insertions, 0 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 bf53a86ea817..e8de68e62403 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 @@ -529,6 +529,9 @@ bool edp_set_backlight_level(const struct dc_link *link, if (dc_is_embedded_signal(link->connector_signal)) { struct pipe_ctx *pipe_ctx = get_pipe_from_link(link); + if (link->panel_cntl) + link->panel_cntl->stored_backlight_registers.USER_LEVEL = backlight_pwm_u16_16; + if (pipe_ctx) { /* Disable brightness ramping when the display is blanked * as it can hang the DMCU |