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drm/mediatek: handle events when enabling/disabling crtc 

[ Upstream commit 411f5c1eac ]

The driver currently handles vblank events only when updating planes on
an already enabled CRTC. The atomic update API however allows requesting
an event when enabling or disabling a CRTC. This currently leads to
event objects being leaked in the kernel and to events not being sent
out. Fix it.

Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Bibby Hsieh 2019-12-10 13:05:21 +08:00 committed by Greg Kroah-Hartman
parent 57cd234da2
commit d80f9dfe47
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/mediatek/mtk_drm_crtc.c
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@ -298,6 +298,7 @@ err_pm_runtime_put:
static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
{
struct drm_device *drm = mtk_crtc->base.dev;
struct drm_crtc *crtc = &mtk_crtc->base;
int i;
DRM_DEBUG_DRIVER("%s\n", __func__);
@ -319,6 +320,13 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
mtk_disp_mutex_unprepare(mtk_crtc->mutex);
pm_runtime_put(drm->dev);
if (crtc->state->event && !crtc->state->active) {
spin_lock_irq(&crtc->dev->event_lock);
drm_crtc_send_vblank_event(crtc, crtc->state->event);
crtc->state->event = NULL;
spin_unlock_irq(&crtc->dev->event_lock);
}
}
static void mtk_crtc_ddp_config(struct drm_crtc *crtc)