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Commit cf648305 authored by Thierry Reding's avatar Thierry Reding Committed by Daniel Vetter
Browse files

drm/irq: Add drm_crtc_vblank_count_and_time() 



This function is the KMS native variant of drm_vblank_count_and_time().
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.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 2b193f02

drivers/gpu/drm/drm_irq.c

+23 −0
Original line number Diff line number Diff line
@@ -917,6 +917,8 @@ EXPORT_SYMBOL(drm_crtc_vblank_count); 
 * vblank events since the system was booted, including lost events due to

 * modesetting activity. Returns corresponding system timestamp of the time

 * of the vblank interval that corresponds to the current vblank counter value.

 *

 * This is the legacy version of drm_crtc_vblank_count_and_time().

 */

u32 drm_vblank_count_and_time(struct drm_device *dev, unsigned int pipe,

			      struct timeval *vblanktime)
@@ -944,6 +946,27 @@ u32 drm_vblank_count_and_time(struct drm_device *dev, unsigned int pipe, 
}

EXPORT_SYMBOL(drm_vblank_count_and_time);



/**

 * drm_crtc_vblank_count_and_time - retrieve "cooked" vblank counter value

 *     and the system timestamp corresponding to that vblank counter value

 * @crtc: which counter to retrieve

 * @vblanktime: Pointer to struct timeval to receive the vblank timestamp.

 *

 * 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. Returns corresponding system timestamp of the time

 * of the vblank interval that corresponds to the current vblank counter value.

 *

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

 */

u32 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc,

				   struct timeval *vblanktime)

{

	return drm_vblank_count_and_time(crtc->dev, drm_crtc_index(crtc),

					 vblanktime);

}

EXPORT_SYMBOL(drm_crtc_vblank_count_and_time);



static void send_vblank_event(struct drm_device *dev,

		struct drm_pending_vblank_event *e,

		unsigned long seq, struct timeval *now)

include/drm/drmP.h

+2 −0
Original line number Diff line number Diff line
@@ -932,6 +932,8 @@ extern u32 drm_vblank_count(struct drm_device *dev, int pipe); 
extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc);

extern u32 drm_vblank_count_and_time(struct drm_device *dev, unsigned int pipe,

				     struct timeval *vblanktime);

extern u32 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc,

					  struct timeval *vblanktime);

extern void drm_send_vblank_event(struct drm_device *dev, unsigned int pipe,

				  struct drm_pending_vblank_event *e);

extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc,