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drm/amd/display: fix duplicate aux command with AMD aux backlight

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when using AMD aux backlight control, we avoid sending backlight
update commands to DMUB firmware because it is controlled by aux commands
in driver.

Reviewed-by: Iswara Nagulendran <iswara.nagulendran@amd.com>
Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Harry VanZyllDeJong <hvanzyll@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Harry VanZyllDeJong 2025-09-17 16:46:13 -04:00 committed by Alex Deucher
parent 04226ae1bc
commit 9dddfac98e
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c
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@ -710,7 +710,8 @@ bool dcn31_set_backlight_level(struct pipe_ctx *pipe_ctx,
panel_cntl->inst,
panel_cntl->pwrseq_inst);
dmub_abm_set_backlight(dc, backlight_level_params, panel_cntl->inst);
if (backlight_level_params->control_type != BACKLIGHT_CONTROL_AMD_AUX)
dmub_abm_set_backlight(dc, backlight_level_params, panel_cntl->inst);
return true;
}