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| author | Bibby Hsieh <bibby.hsieh@mediatek.com> | 2016-09-29 11:29:49 +0800 |
|---|---|---|
| committer | CK Hu <ck.hu@mediatek.com> | 2016-10-19 09:06:12 +0800 |
| commit | 56e4b1e183555c74097fa012f1606b22223f027b (patch) | |
| tree | 680f968f614f327ea6e07ca07d19d7d5fba1a546 /drivers/gpu/drm/mediatek | |
| parent | f752fff611b99f5679224f3990a1f531ea64b1ec (diff) | |
| download | linux-stable-56e4b1e183555c74097fa012f1606b22223f027b.tar.gz linux-stable-56e4b1e183555c74097fa012f1606b22223f027b.tar.bz2 linux-stable-56e4b1e183555c74097fa012f1606b22223f027b.zip | |
drm/mediatek: clear IRQ status before enable OVL interrupt
To make sure that the first vblank IRQ after enabling
vblank isn't too short or immediate, we have to clear
the IRQ status before enable OVL interrupt.
Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Acked-by: CK Hu <ck.hu@mediatek.com>
Diffstat (limited to 'drivers/gpu/drm/mediatek')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index 019b7ca392d7..f75c5b5a536c 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -80,6 +80,7 @@ static void mtk_ovl_enable_vblank(struct mtk_ddp_comp *comp, ddp_comp); priv->crtc = crtc; + writel(0x0, comp->regs + DISP_REG_OVL_INTSTA); writel_relaxed(OVL_FME_CPL_INT, comp->regs + DISP_REG_OVL_INTEN); } |