diff options
| author | Steve Longerbeam <slongerbeam@gmail.com> | 2018-07-20 10:17:31 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-02 09:28:58 +0200 |
| commit | 2408898e3b6c99b3ec792760989e57026cd9909d (patch) | |
| tree | 2e21fe8cae37b7ce8c319439044bfb960f7f8c2c /drivers | |
| parent | ba67f54d911c3da6fc284b4a9cf30ca1a27591e6 (diff) | |
staging: vboxvideo: Add page-flip support
Adds crtc page-flip support by passing the new requested framebuffer
to vbox_crtc_do_set_base().
Note there is no attempt to support vblank interrupts, it's not
not known how to do this in VBOX or if it is even possible. Since
this page-flip implementation does not try to sync the page-flip
to vertical blanking, tearing effects are possible.
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/vboxvideo/vbox_mode.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/staging/vboxvideo/vbox_mode.c b/drivers/staging/vboxvideo/vbox_mode.c index 7295491d3f21..e157c73aac35 100644 --- a/drivers/staging/vboxvideo/vbox_mode.c +++ b/drivers/staging/vboxvideo/vbox_mode.c @@ -308,6 +308,31 @@ static int vbox_crtc_mode_set(struct drm_crtc *crtc, return ret; } +static int vbox_crtc_page_flip(struct drm_crtc *crtc, + struct drm_framebuffer *fb, + struct drm_pending_vblank_event *event, + uint32_t page_flip_flags, + struct drm_modeset_acquire_ctx *ctx) +{ + struct vbox_private *vbox = crtc->dev->dev_private; + struct drm_device *drm = vbox->dev; + unsigned long flags; + int rc; + + rc = vbox_crtc_do_set_base(crtc, CRTC_FB(crtc), fb, 0, 0); + if (rc) + return rc; + + spin_lock_irqsave(&drm->event_lock, flags); + + if (event) + drm_crtc_send_vblank_event(crtc, event); + + spin_unlock_irqrestore(&drm->event_lock, flags); + + return 0; +} + static void vbox_crtc_disable(struct drm_crtc *crtc) { } @@ -346,6 +371,7 @@ static const struct drm_crtc_funcs vbox_crtc_funcs = { .reset = vbox_crtc_reset, .set_config = drm_crtc_helper_set_config, /* .gamma_set = vbox_crtc_gamma_set, */ + .page_flip = vbox_crtc_page_flip, .destroy = vbox_crtc_destroy, }; |