[PATCH 2/3] drm: Reorganize drm_pending_event to support future event types
From: Keith Packard
Date: Wed Jul 05 2017 - 18:17:55 EST
Place drm_event_vblank in a new union that includes that and a bare
drm_event structure. This will allow new members of that union to be
added in the future without changing code related to the existing vbl
event type.
Assignments to the crtc_id field are now done when the event is
allocated, rather than when delievered. This way, delivery doesn't
need to have the crtc ID available.
Signed-off-by: Keith Packard <keithp@xxxxxxxxxx>
---
drivers/gpu/drm/drm_atomic.c | 7 ++++---
drivers/gpu/drm/drm_plane.c | 2 +-
drivers/gpu/drm/drm_vblank.c | 27 ++++++++++++++++-----------
drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c | 4 ++--
drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c | 4 ++--
include/drm/drm_vblank.h | 8 +++++++-
6 files changed, 32 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index c0f336d23f9c..f569d7f03f3c 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1839,7 +1839,7 @@ int drm_atomic_debugfs_init(struct drm_minor *minor)
*/
static struct drm_pending_vblank_event *create_vblank_event(
- struct drm_device *dev, uint64_t user_data)
+ struct drm_device *dev, struct drm_crtc *crtc, uint64_t user_data)
{
struct drm_pending_vblank_event *e = NULL;
@@ -1849,7 +1849,8 @@ static struct drm_pending_vblank_event *create_vblank_event(
e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
e->event.base.length = sizeof(e->event);
- e->event.user_data = user_data;
+ e->event.vbl.crtc_id = crtc->base.id;
+ e->event.vbl.user_data = user_data;
return e;
}
@@ -2052,7 +2053,7 @@ static int prepare_crtc_signaling(struct drm_device *dev,
if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) {
struct drm_pending_vblank_event *e;
- e = create_vblank_event(dev, arg->user_data);
+ e = create_vblank_event(dev, crtc, arg->user_data);
if (!e)
return -ENOMEM;
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 5dc8c4350602..fe9f31285bc2 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -918,7 +918,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
}
e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
e->event.base.length = sizeof(e->event);
- e->event.user_data = page_flip->user_data;
+ e->event.vbl.user_data = page_flip->user_data;
ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
if (ret) {
kfree(e);
diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c
index f55f997c0b8f..9ae170857ef6 100644
--- a/drivers/gpu/drm/drm_vblank.c
+++ b/drivers/gpu/drm/drm_vblank.c
@@ -807,13 +807,18 @@ static void send_vblank_event(struct drm_device *dev,
struct drm_pending_vblank_event *e,
u64 seq, struct timespec *now)
{
- e->event.sequence = seq;
- e->event.tv_sec = now->tv_sec;
- e->event.tv_usec = now->tv_nsec / 1000;
-
- trace_drm_vblank_event_delivered(e->base.file_priv, e->pipe,
- e->event.sequence);
-
+ switch (e->event.base.type) {
+ case DRM_EVENT_VBLANK:
+ case DRM_EVENT_FLIP_COMPLETE:
+ if (seq)
+ e->event.vbl.sequence = (u32) seq;
+ if (now) {
+ e->event.vbl.tv_sec = now->tv_sec;
+ e->event.vbl.tv_usec = now->tv_nsec / 1000;
+ }
+ break;
+ }
+ trace_drm_vblank_event_delivered(e->base.file_priv, e->pipe, seq);
drm_send_event_locked(dev, &e->base);
}
@@ -865,7 +870,6 @@ void drm_crtc_arm_vblank_event(struct drm_crtc *crtc,
e->pipe = pipe;
e->sequence = drm_vblank_count(dev, pipe);
- e->event.crtc_id = crtc->base.id;
list_add_tail(&e->base.link, &dev->vblank_event_list);
}
EXPORT_SYMBOL(drm_crtc_arm_vblank_event);
@@ -897,7 +901,6 @@ void drm_crtc_send_vblank_event(struct drm_crtc *crtc,
now = get_drm_timestamp();
}
e->pipe = pipe;
- e->event.crtc_id = crtc->base.id;
send_vblank_event(dev, e, seq, &now);
}
EXPORT_SYMBOL(drm_crtc_send_vblank_event);
@@ -1342,6 +1345,7 @@ static int drm_queue_vblank_event(struct drm_device *dev, unsigned int pipe,
union drm_wait_vblank *vblwait,
struct drm_file *file_priv)
{
+ struct drm_crtc *crtc = drm_crtc_from_index(dev, pipe);
struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
struct drm_pending_vblank_event *e;
struct timespec now;
@@ -1357,8 +1361,9 @@ static int drm_queue_vblank_event(struct drm_device *dev, unsigned int pipe,
e->pipe = pipe;
e->event.base.type = DRM_EVENT_VBLANK;
- e->event.base.length = sizeof(e->event);
- e->event.user_data = vblwait->request.signal;
+ e->event.base.length = sizeof(e->event.vbl);
+ e->event.vbl.user_data = vblwait->request.signal;
+ e->event.vbl.crtc_id = crtc ? crtc->base.id : 0;
spin_lock_irqsave(&dev->event_lock, flags);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
index 8d7dc9def7c2..c13b97338310 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
@@ -358,8 +358,8 @@ static int vmw_sou_crtc_page_flip(struct drm_crtc *crtc,
ret = vmw_event_fence_action_queue(file_priv, fence,
&event->base,
- &event->event.tv_sec,
- &event->event.tv_usec,
+ &event->event.vbl.tv_sec,
+ &event->event.vbl.tv_usec,
true);
}
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
index bad31bdf09b6..4e329588ce9c 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
@@ -544,8 +544,8 @@ static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
ret = vmw_event_fence_action_queue(file_priv, fence,
&event->base,
- &event->event.tv_sec,
- &event->event.tv_usec,
+ &event->event.vbl.tv_sec,
+ &event->event.vbl.tv_usec,
true);
vmw_fence_obj_unreference(&fence);
} else {
diff --git a/include/drm/drm_vblank.h b/include/drm/drm_vblank.h
index 68e99177fff3..3ef7ddc5db5f 100644
--- a/include/drm/drm_vblank.h
+++ b/include/drm/drm_vblank.h
@@ -54,7 +54,10 @@ struct drm_pending_vblank_event {
/**
* @event: Actual event which will be sent to userspace.
*/
- struct drm_event_vblank event;
+ union {
+ struct drm_event base;
+ struct drm_event_vblank vbl;
+ } event;
};
/**
@@ -163,6 +166,9 @@ void drm_crtc_send_vblank_event(struct drm_crtc *crtc,
struct drm_pending_vblank_event *e);
void drm_crtc_arm_vblank_event(struct drm_crtc *crtc,
struct drm_pending_vblank_event *e);
+void drm_vblank_set_event(struct drm_pending_vblank_event *e,
+ u64 *seq,
+ struct timespec *now);
bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe);
bool drm_crtc_handle_vblank(struct drm_crtc *crtc);
int drm_crtc_vblank_get(struct drm_crtc *crtc);
--
2.11.0