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Commit a4d7b30d authored by Thierry Reding's avatar Thierry Reding
Browse files

drm/irq: Add drm_crtc_send_vblank_event() 



This function is the KMS native variant of drm_send_vblank_event(). It
takes a struct drm_crtc * instead of a struct drm_device * and an index
of the CRTC.

Eventually the goal is to access vblank data through the CRTC only so
that the per-CRTC data can be moved to struct drm_crtc.

Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 4e0cd681

drivers/gpu/drm/drm_irq.c

+19 −0
Original line number Diff line number Diff line
@@ -904,6 +904,8 @@ static void send_vblank_event(struct drm_device *dev, 
 *

 * Updates sequence # and timestamp on event, and sends it to userspace.

 * Caller must hold event lock.

 *

 * This is the legacy version of drm_crtc_send_vblank_event().

 */

void drm_send_vblank_event(struct drm_device *dev, int crtc,

		struct drm_pending_vblank_event *e)
@@ -922,6 +924,23 @@ void drm_send_vblank_event(struct drm_device *dev, int crtc, 
}

EXPORT_SYMBOL(drm_send_vblank_event);



/**

 * drm_crtc_send_vblank_event - helper to send vblank event after pageflip

 * @crtc: the source CRTC of the vblank event

 * @e: the event to send

 *

 * Updates sequence # and timestamp on event, and sends it to userspace.

 * Caller must hold event lock.

 *

 * This is the native KMS version of drm_send_vblank_event().

 */

void drm_crtc_send_vblank_event(struct drm_crtc *crtc,

				struct drm_pending_vblank_event *e)

{

	drm_send_vblank_event(crtc->dev, drm_crtc_index(crtc), e);

}

EXPORT_SYMBOL(drm_crtc_send_vblank_event);



/**

 * drm_vblank_enable - enable the vblank interrupt on a CRTC

 * @dev: DRM device

include/drm/drmP.h

+2 −0
Original line number Diff line number Diff line
@@ -905,6 +905,8 @@ extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc, 
				     struct timeval *vblanktime);

extern void drm_send_vblank_event(struct drm_device *dev, int crtc,

				     struct drm_pending_vblank_event *e);

extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc,

				       struct drm_pending_vblank_event *e);

extern bool drm_handle_vblank(struct drm_device *dev, int crtc);

extern int drm_vblank_get(struct drm_device *dev, int crtc);

extern void drm_vblank_put(struct drm_device *dev, int crtc);