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authorÁlvaro Fernández Rojas <noltari@gmail.com>2017-02-06 17:12:09 +0100
committerÁlvaro Fernández Rojas <noltari@gmail.com>2017-02-06 22:24:42 +0100
commitdab5a4406799633a319381b0127e1fda82b15c02 (patch)
tree7d100dfd99914c1195ccada0f62387d4fced8563 /target/linux/brcm2708/patches-4.4/0578-drm-vc4-Fix-sending-of-page-flip-completion-events-i.patch
parent6b01f0f196c0c1ff43c362e9aef4433eacbbb8c6 (diff)
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brcm2708: update linux 4.4 patches to latest version
n As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0578-drm-vc4-Fix-sending-of-page-flip-completion-events-i.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0578-drm-vc4-Fix-sending-of-page-flip-completion-events-i.patch42
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0578-drm-vc4-Fix-sending-of-page-flip-completion-events-i.patch b/target/linux/brcm2708/patches-4.4/0578-drm-vc4-Fix-sending-of-page-flip-completion-events-i.patch
new file mode 100644
index 0000000000..a94cde7e1d
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0578-drm-vc4-Fix-sending-of-page-flip-completion-events-i.patch
@@ -0,0 +1,42 @@
+From 64e5b6a26eec44abb36eea964fc0ac35aeed6f26 Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Thu, 2 Feb 2017 09:42:18 -0800
+Subject: [PATCH] drm/vc4: Fix sending of page flip completion events in FKMS
+ mode.
+
+In the rewrite of vc4_crtc.c for fkms, I dropped the part of the
+CRTC's atomic flush handler that moved the completion event from the
+proposed atomic state change to the CRTC's current state. That meant
+that when full screen pageflipping happened (glxgears -fullscreen in
+X, compton, por weston), the app would end up blocked firever waiting
+to draw its next frame.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+---
+ drivers/gpu/drm/vc4/vc4_firmware_kms.c | 15 +++++++++++++++
+ 1 file changed, 15 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
+@@ -312,6 +312,21 @@ static int vc4_crtc_atomic_check(struct
+ static void vc4_crtc_atomic_flush(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
+ {
++ struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
++ struct drm_device *dev = crtc->dev;
++
++ if (crtc->state->event) {
++ unsigned long flags;
++
++ crtc->state->event->pipe = drm_crtc_index(crtc);
++
++ WARN_ON(drm_crtc_vblank_get(crtc) != 0);
++
++ spin_lock_irqsave(&dev->event_lock, flags);
++ vc4_crtc->event = crtc->state->event;
++ crtc->state->event = NULL;
++ spin_unlock_irqrestore(&dev->event_lock, flags);
++ }
+ }
+
+ static void vc4_crtc_handle_page_flip(struct vc4_crtc *vc4_crtc)