commit `Implement new backlight_level_params structure` breaks backlight

changed title from {-drm/amd/display: -}Implement new backlight_level_params structure breaks backlight to {+commit +}Implement new backlight_level_params structure breaks backlight

added DC Strix bisected labels

Can you please share a dmesg log with drm.debug=0x116 both with and without the revert in place?

As a guess in where the problem is, does this help?

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 e0e3bb8653595..c78ef19055243 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
@@ -187,7 +187,7 @@ bool edp_set_backlight_level_nits(struct dc_link *link,
                        (uint8_t *)(target_luminance),
                        sizeof(struct target_luminance_value)) != DC_OK)
                        return false;
-       } else if (link->backlight_control_type == BACKLIGHT_CONTROL_AMD_AUX) {
+       } else {
                struct dpcd_source_backlight_set dpcd_backlight_set;
                *(uint32_t *)&dpcd_backlight_set.backlight_level_millinits = backlight_millinits;
                *(uint16_t *)&dpcd_backlight_set.backlight_transition_time_ms = (uint16_t)transition_time_in_ms;