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Commit 1e711621 authored by Abhinav Kumar's avatar Abhinav Kumar
Browse files

drm/msm/sde: signal pending PAGE_FLIP events 



Currently any pending PAGE_FLIP events are not signalled
by the drm driver. Userspace blocks on these events
to trigger a redraw. Add support to signal the PAGE_FLIP
complete events after commit is complete.

Change-Id: I887efc48f8890e5e1ed055f7016393a90fc26fa6
Signed-off-by: default avatarAbhinav Kumar <abhinavk@codeaurora.org>
parent 88fee0f3

drivers/gpu/drm/msm/sde/sde_crtc.c

+12 −2
Original line number Original line Diff line number Diff line
@@ -358,7 +358,17 @@ bool sde_crtc_is_rt(struct drm_crtc *crtc) 
	return to_sde_crtc_state(crtc->state)->is_rt;

	return to_sde_crtc_state(crtc->state)->is_rt;

}

}





/* if file!=NULL, this is preclose potential cancel-flip path */

/**

 *  _sde_crtc_complete_flip - signal pending page_flip events

 * Any pending vblank events are added to the vblank_event_list

 * so that the next vblank interrupt shall signal them.

 * However PAGE_FLIP events are not handled through the vblank_event_list.

 * This API signals any pending PAGE_FLIP events requested through

 * DRM_IOCTL_MODE_PAGE_FLIP and are cached in the sde_crtc->event.

 * if file!=NULL, this is preclose potential cancel-flip path

 * @crtc: Pointer to drm crtc structure

 * @file: Pointer to drm file

 */

static void _sde_crtc_complete_flip(struct drm_crtc *crtc,

static void _sde_crtc_complete_flip(struct drm_crtc *crtc,

		struct drm_file *file)

		struct drm_file *file)

{

{
@@ -395,7 +405,7 @@ static void sde_crtc_vblank_cb(void *data) 
		sde_crtc->vblank_cb_time = ktime_get();

		sde_crtc->vblank_cb_time = ktime_get();

	else

	else

		sde_crtc->vblank_cb_count++;

		sde_crtc->vblank_cb_count++;



	_sde_crtc_complete_flip(crtc, NULL);

	drm_crtc_handle_vblank(crtc);

	drm_crtc_handle_vblank(crtc);

	DRM_DEBUG_VBL("crtc%d\n", crtc->base.id);

	DRM_DEBUG_VBL("crtc%d\n", crtc->base.id);

	SDE_EVT32_IRQ(DRMID(crtc));

	SDE_EVT32_IRQ(DRMID(crtc));