drm/i915/lvds: Disable panel-fitter on gen4 for 1:1 scale factors (257e48f1) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/gpu/drm/i915/intel_lvds.c

+15 −12

Original line number	Diff line number	Diff line
		@@ -269,14 +269,13 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
		u32 scaled_width = adjusted_mode->hdisplay * mode->vdisplay;
		u32 scaled_height = mode->hdisplay * adjusted_mode->vdisplay;

		pfit_control \|= PFIT_ENABLE;
		/* 965+ is easy, it does everything in hw */
		if (scaled_width > scaled_height)
		pfit_control \|= PFIT_SCALING_PILLAR;
		pfit_control \|= PFIT_ENABLE \| PFIT_SCALING_PILLAR;
		else if (scaled_width < scaled_height)
		pfit_control \|= PFIT_SCALING_LETTER;
		else
		pfit_control \|= PFIT_SCALING_AUTO;
		pfit_control \|= PFIT_ENABLE \| PFIT_SCALING_LETTER;
		else if (adjusted_mode->hdisplay != mode->hdisplay)
		pfit_control \|= PFIT_ENABLE \| PFIT_SCALING_AUTO;
		} else {
		u32 scaled_width = adjusted_mode->hdisplay * mode->vdisplay;
		u32 scaled_height = mode->hdisplay * adjusted_mode->vdisplay;
		@@ -323,13 +322,17 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
		* Full scaling, even if it changes the aspect ratio.
		* Fortunately this is all done for us in hw.
		*/
		if (mode->vdisplay != adjusted_mode->vdisplay \|\|
		mode->hdisplay != adjusted_mode->hdisplay) {
		pfit_control \|= PFIT_ENABLE;
		if (INTEL_INFO(dev)->gen >= 4)
		pfit_control \|= PFIT_SCALING_AUTO;
		else
		pfit_control \|= (VERT_AUTO_SCALE \| HORIZ_AUTO_SCALE \|
		pfit_control \|= (VERT_AUTO_SCALE \|
		VERT_INTERP_BILINEAR \|
		HORIZ_AUTO_SCALE \|
		HORIZ_INTERP_BILINEAR);
		}
		break;

		default: