Index: radeon/radeon_pci.c
===================================================================
RCS file: /cvsroot/src/sys/external/bsd/drm2/radeon/radeon_pci.c,v
retrieving revision 1.7
diff -p -r1.7 radeon_pci.c
*** radeon/radeon_pci.c	1 Mar 2015 10:07:01 -0000	1.7
--- radeon/radeon_pci.c	8 Apr 2015 06:04:27 -0000
*************** static int	radeon_match(device_t, cfdata
*** 105,110 ****
--- 105,112 ----
  static void	radeon_attach(device_t, device_t, void *);
  static void	radeon_attach_real(device_t);
  static int	radeon_detach(device_t, int);
+ static bool	radeon_do_suspend(device_t, const pmf_qual_t *);
+ static bool	radeon_do_resume(device_t, const pmf_qual_t *);
  
  static void	radeon_task_work(struct work *, void *);
  
*************** radeon_attach(device_t parent, device_t 
*** 163,168 ****
--- 165,173 ----
  
  	pci_aprint_devinfo(pa, NULL);
  
+ 	if (!pmf_device_register(self, &radeon_do_suspend, &radeon_do_resume))
+ 		aprint_error_dev(self, "unable to establish power handler\n");
+ 
  	/*
  	 * Trivial initialization first; the rest will come after we
  	 * have mounted the root file system and can load firmware
*************** radeon_detach(device_t self, int flags)
*** 277,282 ****
--- 282,321 ----
  	return 0;
  }
  
+ static bool
+ radeon_do_suspend(device_t self, const pmf_qual_t *qual)
+ {
+ 	struct radeon_softc *const sc = device_private(self);
+ 	struct drm_device *const dev = sc->sc_drm_dev;
+ 	int ret;
+ 
+ 	if (dev == NULL)
+ 		return true;
+ 
+ 	ret = radeon_suspend_kms(dev, true, true);
+ 	if (ret)
+ 		return false;
+ 
+ 	return true;
+ }
+ 
+ static bool
+ radeon_do_resume(device_t self, const pmf_qual_t *qual)
+ {
+ 	struct radeon_softc *const sc = device_private(self);
+ 	struct drm_device *const dev = sc->sc_drm_dev;
+ 	int ret;
+ 
+ 	if (dev == NULL)
+ 		return true;
+ 
+ 	ret = radeon_resume_kms(dev, true, true);
+ 	if (ret)
+ 		return false;
+ 
+ 	return true;
+ }
+ 
  static void
  radeon_task_work(struct work *work, void *cookie __unused)
  {