drm/vmwgfx: Add and connect atomic state object check/commit

	return &vfb->base;

}

/**

 * vmw_kms_atomic_check_modeset- validate state object for modeset changes

 *

 * @dev: DRM device

 * @state: the driver state object

 *

 * This is a simple wrapper around drm_atomic_helper_check_modeset() for

 * us to assign a value to mode->crtc_clock so that

 * drm_calc_timestamping_constants() won't throw an error message

 *

 * RETURNS

 * Zero for success or -errno

 */

int

vmw_kms_atomic_check_modeset(struct drm_device *dev,

			     struct drm_atomic_state *state)

{

	struct drm_crtc_state *crtc_state;

	struct drm_crtc *crtc;

	struct vmw_private *dev_priv = vmw_priv(dev);

	int i;

	for_each_crtc_in_state(state, crtc, crtc_state, i) {

		unsigned long requested_bb_mem = 0;

		if (dev_priv->active_display_unit == vmw_du_screen_target) {

			if (crtc->primary->fb) {

				int cpp = crtc->primary->fb->pitches[0] /

					  crtc->primary->fb->width;

				requested_bb_mem += crtc->mode.hdisplay * cpp *

						    crtc->mode.vdisplay;

			}

			if (requested_bb_mem > dev_priv->prim_bb_mem)

				return -EINVAL;

		}

	}

	return drm_atomic_helper_check(dev, state);

}

static const struct drm_mode_config_funcs vmw_kms_funcs = {

	.fb_create = vmw_kms_fb_create,

	.atomic_check = vmw_kms_atomic_check_modeset,

	.atomic_commit = drm_atomic_helper_commit,

};

static int vmw_kms_generic_present(struct vmw_private *dev_priv,