[Intel-gfx] [PATCH 3/4] HACK: drm/i915: turn off panel fitting at flip time if needed

[Jesse Barnes]

Need better pfit tracking to do this right.

Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
---
 drivers/gpu/drm/i915/intel_display.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 53ad51c..591ac2d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2301,6 +2301,18 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
 		return ret;
 	}
 
+	/* Update pipe size and adjust fitter if needed */
+	I915_WRITE(PIPESRC(intel_crtc->pipe),
+		   ((crtc->mode.hdisplay - 1) << 16) |
+		   (crtc->mode.vdisplay - 1));
+	if (!intel_crtc->config.pch_pfit.size &&
+	    (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) ||
+	     intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))) {
+		I915_WRITE(PF_CTL(intel_crtc->pipe), 0);
+		I915_WRITE(PF_WIN_POS(intel_crtc->pipe), 0);
+		I915_WRITE(PF_WIN_SZ(intel_crtc->pipe), 0);
+	}
+
 	ret = dev_priv->display.update_plane(crtc, fb, x, y);
 	if (ret) {
 		intel_unpin_fb_obj(to_intel_framebuffer(fb)->obj);
-- 
1.7.9.5