[PATCH] drm/atmel-hlcdc: Fix suspend/resume implementation

[Sylvain Rochet]

Hi,

On Wed, Mar 01, 2017 at 01:31:01PM +0100, Boris Brezillon wrote:
> The current suspend resume implementation is assuming register values are
> kept when entering suspend, which is no longer the case with the
> suspend-to-RAM on the sama5d2.
> 
> While at it, switch to the generic infrastructure to enter suspend mode
> (drm_atomic_helper_suspend/resume()).
> 
> Signed-off-by: Boris Brezillon <boris.brezillon at free-electrons.com>
> ---

No regression on sama5d3, atmel_hlcdc_crtc_disable/enable are still 
called at suspend/resume and pinctrl_pm_select_sleep_state which is just 
for my unusual screen (no display pin, so I need to clamp all pads) is 
still called, thus it works for me.

Tested-by: Sylvain Rochet <sylvain.rochet at finsecur.com>

Cheers,
Sylvain