[PATCH] imx-drm: imx-drm-core: add suspend/resume support

[Philipp Zabel]

Hi Shawn,

Am Donnerstag, den 24.07.2014, 17:17 +0800 schrieb Shawn Guo:
> HDMI currently stops working after a system suspend/resume cycle.  It
> turns out that the cause is the imx-hdmi encoder .dpms hook doesn't get
> called from anywhere across suspend/resume cycle.
> 
> The patch follows what exynos drm driver does to walk the list of
> connectors and call their .dpms function from suspend/resume hook.  And
> the connectors' .dpms function will in turn filter down to the .dpms
> hooks of encoders and CRTCs.
> 
> With this change, HDMI can continue working after a suspend/resume
> cycle.
> 
> Signed-off-by: Shawn Guo <shawn.guo at freescale.com>
> ---
> Tested with HDMI and LVDS.  It'd be great if someone can help test TVE
> to ensure the patch doesn't break anything.

Tested-by: Philipp Zabel <p.zabel at pengutronix.de>

on i.MX53-QSB with VGA via TVE.

regards
Philipp