pmaports/device/testing/linux-nokia-n9/0005-Revert-drm-omap-work-around-for-omap3-display-enable.patch

From 3a501b2c3c0507c8f560183ac79617fe975b8594 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Filip=20Matijevi=C4=87?= <filip.matijevic.pz@gmail.com>
Date: Thu, 2 Nov 2017 18:46:21 +0100
Subject: [PATCH 05/11] Revert "drm/omap: work-around for omap3 display enable"

This reverts commit fc5cc9678e130196012c17b37e555d53d3d3476b.
---
 drivers/gpu/drm/omapdrm/omap_drv.c | 47 +++++++++++-------------------
 1 file changed, 17 insertions(+), 30 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index 3632854c2b91..54bc31679b27 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -74,36 +74,23 @@ static void omap_atomic_commit_tail(struct drm_atomic_state *old_state)
 	/* Apply the atomic update. */
 	drm_atomic_helper_commit_modeset_disables(dev, old_state);
 
-	if (priv->omaprev != 0x3430) {
-		/* With the current dss dispc implementation we have to enable
-		 * the new modeset before we can commit planes. The dispc ovl
-		 * configuration relies on the video mode configuration been
-		 * written into the HW when the ovl configuration is
-		 * calculated.
-		 *
-		 * This approach is not ideal because after a mode change the
-		 * plane update is executed only after the first vblank
-		 * interrupt. The dispc implementation should be fixed so that
-		 * it is able use uncommitted drm state information.
-		 */
-		drm_atomic_helper_commit_modeset_enables(dev, old_state);
-		omap_atomic_wait_for_completion(dev, old_state);
-
-		drm_atomic_helper_commit_planes(dev, old_state, 0);
-
-		drm_atomic_helper_commit_hw_done(old_state);
-	} else {
-		/*
-		 * OMAP3 DSS seems to have issues with the work-around above,
-		 * resulting in endless sync losts if a crtc is enabled without
-		 * a plane. For now, skip the WA for OMAP3.
-		 */
-		drm_atomic_helper_commit_planes(dev, old_state, 0);
-
-		drm_atomic_helper_commit_modeset_enables(dev, old_state);
-
-		drm_atomic_helper_commit_hw_done(old_state);
-	}
+	/* With the current dss dispc implementation we have to enable
+	 * the new modeset before we can commit planes. The dispc ovl
+	 * configuration relies on the video mode configuration been
+	 * written into the HW when the ovl configuration is
+	 * calculated.
+	 *
+	 * This approach is not ideal because after a mode change the
+	 * plane update is executed only after the first vblank
+	 * interrupt. The dispc implementation should be fixed so that
+	 * it is able use uncommitted drm state information.
+	 */
+	drm_atomic_helper_commit_modeset_enables(dev, old_state);
+	omap_atomic_wait_for_completion(dev, old_state);
+
+	drm_atomic_helper_commit_planes(dev, old_state, 0);
+
+	drm_atomic_helper_commit_hw_done(old_state);
 
 	/*
 	 * Wait for completion of the page flips to ensure that old buffers
-- 
2.17.0