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authorDaniel Vetter <daniel.vetter@ffwll.ch>2015-09-08 13:02:07 +0300
committerDaniel Vetter <daniel.vetter@ffwll.ch>2015-09-08 14:49:08 +0300
commitaef9dbb8f779ae0ffb46313b07700cac72b58ff4 (patch)
treea15b69d70d57cb4238532b503ca371001650d94f /drivers/gpu/drm/tegra/drm.c
parent844f9111f6f54f88eb2f0fac121b82ce77193866 (diff)
downloadlinux-aef9dbb8f779ae0ffb46313b07700cac72b58ff4.tar.xz
drm/atomic-helper: Add option to update planes only on active crtc
With drivers supporting runtime pm it's generally not a good idea to touch the hardware when it's off. Add an option to the commit_planes helper to support this case. Note that the helpers already add all planes on a crtc when a modeset happens, hence plane updates will not be lost if drivers set this to true. v2: Check for NULL state->crtc before chasing the pointer. Also check both old and new crtc if there's a switch. Finally just outright disallow switching crtcs for a plane if the plane is in active use, on most hardware that doesn't make sense. v3: Since commit_planes(active_only = true) is for enabling things only after all the crtc are on we should only look at the new crtc to decide whether to call the plane hooks - if the current CRTC isn't on then skip. If the old crtc (when moving a plane) went down then the plane should have been disabled as part of the pipe shutdown work already. For which there's currently no helper really unfortunately. Also move the check for wether a plane gets a new CRTC assigned while still in active use out of this patch. v4: Rebase over exynos changes. Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Thierry Reding <treding@nvidia.com> Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Tested-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'drivers/gpu/drm/tegra/drm.c')
-rw-r--r--drivers/gpu/drm/tegra/drm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 6d88cf1fcd1c..2486bc24bff6 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -56,7 +56,7 @@ static void tegra_atomic_complete(struct tegra_drm *tegra,
*/
drm_atomic_helper_commit_modeset_disables(drm, state);
- drm_atomic_helper_commit_planes(drm, state);
+ drm_atomic_helper_commit_planes(drm, state, false);
drm_atomic_helper_commit_modeset_enables(drm, state);
drm_atomic_helper_wait_for_vblanks(drm, state);