static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event)
{
struct drm_device *dev = crtc->dev;
struct exynos_drm_private *dev_priv = dev->dev_private;
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
struct drm_framebuffer *old_fb = crtc->fb;
int ret = -EINVAL;
DRM_DEBUG_KMS("%s\n", __FILE__);
mutex_lock(&dev->struct_mutex);
if (event) {
/*
* the pipe from user always is 0 so we can set pipe number
* of current owner to event.
*/
event->pipe = exynos_crtc->pipe;
ret = drm_vblank_get(dev, exynos_crtc->pipe);
if (ret) {
DRM_DEBUG("failed to acquire vblank counter\n");
list_del(&event->base.link);
goto out;
}
list_add_tail(&event->base.link,
&dev_priv->pageflip_event_list);
crtc->fb = fb;
ret = exynos_drm_crtc_update(crtc);
if (ret) {
crtc->fb = old_fb;
drm_vblank_put(dev, exynos_crtc->pipe);
list_del(&event->base.link);
goto out;
}
/*
* the values related to a buffer of the drm framebuffer
* to be applied should be set at here. because these values
* first, are set to shadow registers and then to
* real registers at vsync front porch period.
*/
exynos_drm_crtc_apply(crtc);
}
out:
mutex_unlock(&dev->struct_mutex);
return ret;
}
static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event)
{
struct drm_device *dev = crtc->dev;
struct exynos_drm_private *dev_priv = dev->dev_private;
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
struct drm_framebuffer *old_fb = crtc->fb;
int ret = -EINVAL;
DRM_DEBUG_KMS("%s\n", __FILE__);
mutex_lock(&dev->struct_mutex);
if (event) {
/*
*/
event->pipe = exynos_crtc->pipe;
ret = drm_vblank_get(dev, exynos_crtc->pipe);
if (ret) {
DRM_DEBUG("failed to acquire vblank counter\n");
list_del(&event->base.link);
goto out;
}
list_add_tail(&event->base.link,
&dev_priv->pageflip_event_list);
crtc->fb = fb;
ret = exynos_drm_crtc_update(crtc);
if (ret) {
crtc->fb = old_fb;
drm_vblank_put(dev, exynos_crtc->pipe);
list_del(&event->base.link);
goto out;
}
/*
*/
exynos_drm_crtc_apply(crtc);
}
out:
mutex_unlock(&dev->struct_mutex);
return ret;
}
static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb)
{
int ret;
DRM_DEBUG_KMS("%s\n", __FILE__);
ret = exynos_drm_crtc_update(crtc);
if (ret)
return ret;
exynos_drm_crtc_apply(crtc);
return ret;
}