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drm/irq: Add drm_crtc_send_vblank_event()

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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: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2014-12-15 14:47:18 +01:00
parent 4e0cd68115
commit a4d7b30df5
2 changed files with 21 additions and 0 deletions
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19
drivers/gpu/drm/drm_irq.c
View file

@ -904,6 +904,8 @@ static void send_vblank_event(struct drm_device *dev,
* *
* Updates sequence # and timestamp on event, and sends it to userspace. * Updates sequence # and timestamp on event, and sends it to userspace.
* Caller must hold event lock. * 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, void drm_send_vblank_event(struct drm_device *dev, int crtc,
struct drm_pending_vblank_event *e) 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); 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 * drm_vblank_enable - enable the vblank interrupt on a CRTC
* @dev: DRM device * @dev: DRM device

2
include/drm/drmP.h
View file

@ -905,6 +905,8 @@ extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
struct timeval *vblanktime); struct timeval *vblanktime);
extern void drm_send_vblank_event(struct drm_device *dev, int crtc, extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
struct drm_pending_vblank_event *e); 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 bool drm_handle_vblank(struct drm_device *dev, int crtc);
extern int drm_vblank_get(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); extern void drm_vblank_put(struct drm_device *dev, int crtc);