Commit a40a8305 authored Oct 20, 2020 by Ville Syrjälä

drm/i915: Reject 90/270 degree rotated initial fbs



We don't currently handle the initial fb readout correctly
for 90/270 degree rotated scanout. Reject it.

Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201020194330.28568-1-ville.syrjala@linux.intel.com


Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

parent c6073d4c

drivers/gpu/drm/i915/display/intel_display.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -10802,6 +10802,10 @@ skl_get_initial_plane_config(struct intel_crtc *crtc,
		val & PLANE_CTL_FLIP_HORIZONTAL)
		plane_config->rotation \|= DRM_MODE_REFLECT_X;

		/* 90/270 degree rotation would require extra work */
		if (drm_rotation_90_or_270(plane_config->rotation))
		goto error;

		base = intel_de_read(dev_priv, PLANE_SURF(pipe, plane_id)) & 0xfffff000;
		plane_config->base = base;

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