From 1bfa594cf26a9880c489cdcb5911bfb3440aa566 Mon Sep 17 00:00:00 2001
From: David Herrmann <dh.herrmann@gmail.com>
Date: Thu, 2 Oct 2014 18:51:29 +0200
Subject: [PATCH] terminal/drm: clear 'applied' flag when changing state

If a pipe is enabled/disabled, we have to clear crtc->applied of the
linked CRTC. Otherwise, we will not run a deep modeset, but leave the crtc
in the pre-configured state.
---
 src/libsystemd-terminal/grdev-drm.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/libsystemd-terminal/grdev-drm.c b/src/libsystemd-terminal/grdev-drm.c
index f01df1dae2..232321c0e2 100644
--- a/src/libsystemd-terminal/grdev-drm.c
+++ b/src/libsystemd-terminal/grdev-drm.c
@@ -1549,9 +1549,23 @@ static grdev_fb *grdrm_pipe_target(grdev_pipe *basepipe) {
         return basepipe->back;
 }
 
+static void grdrm_pipe_enable(grdev_pipe *basepipe) {
+        grdrm_pipe *pipe = grdrm_pipe_from_base(basepipe);
+
+        pipe->crtc->applied = false;
+}
+
+static void grdrm_pipe_disable(grdev_pipe *basepipe) {
+        grdrm_pipe *pipe = grdrm_pipe_from_base(basepipe);
+
+        pipe->crtc->applied = false;
+}
+
 static const grdev_pipe_vtable grdrm_pipe_vtable = {
         .free                   = grdrm_pipe_free,
         .target                 = grdrm_pipe_target,
+        .enable                 = grdrm_pipe_enable,
+        .disable                = grdrm_pipe_disable,
 };
 
 /*