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| author | Vincent Abriou <vincent.abriou@st.com> | 2017-02-02 11:50:48 +0300 |
|---|---|---|
| committer | Vincent Abriou <vincent.abriou@st.com> | 2017-02-10 11:34:39 +0300 |
| commit | e9f494d36fc4cab2ba7e9e7f3bb4edf5b214f651 (patch) | |
| tree | ae5e20023a96ae50af923e7943ee8ed68151d846 /drivers/gpu/drm/sti | |
| parent | c5649ee49761f5367c46c5ae6579ab8e8b03575d (diff) | |
| download | linux-e9f494d36fc4cab2ba7e9e7f3bb4edf5b214f651.tar.xz | |
drm/sti: do not post GDP command if no update
Do not process update requests with unmodified parameters.
This typically happens when the driver is called with legacy
(non-atomic) IOCTL : in that case atomic_update() is called multiple
times with the same parameters.
Signed-off-by: Vincent Abriou <vincent.abriou@st.com>
Diffstat (limited to 'drivers/gpu/drm/sti')
| -rw-r--r-- | drivers/gpu/drm/sti/sti_gdp.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sti/sti_gdp.c b/drivers/gpu/drm/sti/sti_gdp.c index 7f6d0790cca6..86279f5022c2 100644 --- a/drivers/gpu/drm/sti/sti_gdp.c +++ b/drivers/gpu/drm/sti/sti_gdp.c @@ -708,6 +708,21 @@ static void sti_gdp_atomic_update(struct drm_plane *drm_plane, if (!crtc || !fb) return; + if ((oldstate->fb == state->fb) && + (oldstate->crtc_x == state->crtc_x) && + (oldstate->crtc_y == state->crtc_y) && + (oldstate->crtc_w == state->crtc_w) && + (oldstate->crtc_h == state->crtc_h) && + (oldstate->src_x == state->src_x) && + (oldstate->src_y == state->src_y) && + (oldstate->src_w == state->src_w) && + (oldstate->src_h == state->src_h)) { + /* No change since last update, do not post cmd */ + DRM_DEBUG_DRIVER("No change, not posting cmd\n"); + plane->status = STI_PLANE_UPDATED; + return; + } + if (!gdp->vtg) { struct sti_compositor *compo = dev_get_drvdata(gdp->dev); struct sti_mixer *mixer = to_sti_mixer(crtc); |