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Commit 3ce733b9 authored by Gerd Hoffmann's avatar Gerd Hoffmann Committed by Dave Airlie
Browse files

bochs: add page_flip 



Implement crtc page_flip callback for bochsdrm.  The qemu stdvga has no
vblank signaling, so we have to fake it.  We do so by instantly calling
drm_send_vblank_event.  Tested with kmscon.

Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 49b70a31

drivers/gpu/drm/bochs/bochs_kms.c

+21 −0
Original line number Diff line number Diff line
@@ -109,11 +109,32 @@ static void bochs_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, 
{

}



static int bochs_crtc_page_flip(struct drm_crtc *crtc,

				struct drm_framebuffer *fb,

				struct drm_pending_vblank_event *event,

				uint32_t page_flip_flags)

{

	struct bochs_device *bochs =

		container_of(crtc, struct bochs_device, crtc);

	struct drm_framebuffer *old_fb = crtc->primary->fb;

	unsigned long irqflags;



	crtc->primary->fb = fb;

	bochs_crtc_mode_set_base(crtc, 0, 0, old_fb);

	if (event) {

		spin_lock_irqsave(&bochs->dev->event_lock, irqflags);

		drm_send_vblank_event(bochs->dev, -1, event);

		spin_unlock_irqrestore(&bochs->dev->event_lock, irqflags);

	}

	return 0;

}



/* These provide the minimum set of functions required to handle a CRTC */

static const struct drm_crtc_funcs bochs_crtc_funcs = {

	.gamma_set = bochs_crtc_gamma_set,

	.set_config = drm_crtc_helper_set_config,

	.destroy = drm_crtc_cleanup,

	.page_flip = bochs_crtc_page_flip,

};



static const struct drm_crtc_helper_funcs bochs_helper_funcs = {