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Commit 96d3f91e authored by Thierry Reding's avatar Thierry Reding
Browse files

drm/irq: Add drm_crtc_vblank_count() 



This function is the KMS native variant of drm_vblank_count(). 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 115ebcd4

drivers/gpu/drm/drm_irq.c

+21 −0
Original line number Diff line number Diff line
@@ -830,6 +830,8 @@ drm_get_last_vbltimestamp(struct drm_device *dev, int crtc, 
 * vblank events since the system was booted, including lost events due to

 * modesetting activity.

 *

 * This is the legacy version of drm_crtc_vblank_count().

 *

 * Returns:

 * The software vblank counter.

 */
@@ -843,6 +845,25 @@ u32 drm_vblank_count(struct drm_device *dev, int crtc) 
}

EXPORT_SYMBOL(drm_vblank_count);



/**

 * drm_crtc_vblank_count - retrieve "cooked" vblank counter value

 * @crtc: which counter to retrieve

 *

 * Fetches the "cooked" vblank count value that represents the number of

 * vblank events since the system was booted, including lost events due to

 * modesetting activity.

 *

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

 *

 * Returns:

 * The software vblank counter.

 */

u32 drm_crtc_vblank_count(struct drm_crtc *crtc)

{

	return drm_vblank_count(crtc->dev, drm_crtc_index(crtc));

}

EXPORT_SYMBOL(drm_crtc_vblank_count);



/**

 * drm_vblank_count_and_time - retrieve "cooked" vblank counter value

 * and the system timestamp corresponding to that vblank counter value.

include/drm/drmP.h

+1 −0
Original line number Diff line number Diff line
@@ -901,6 +901,7 @@ extern int drm_vblank_init(struct drm_device *dev, int num_crtcs); 
extern int drm_wait_vblank(struct drm_device *dev, void *data,

			   struct drm_file *filp);

extern u32 drm_vblank_count(struct drm_device *dev, int crtc);

extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc);

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,