From: shawn.guo@freescale.com (Shawn Guo)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] imx-drm: imx-drm-core: add suspend/resume support
Date: Fri, 25 Jul 2014 14:31:27 +0800 [thread overview]
Message-ID: <20140725063126.GF8821@dragon> (raw)
In-Reply-To: <1406194732.21800.1.camel@paszta.hi.pengutronix.de>
On Thu, Jul 24, 2014 at 11:38:52AM +0200, Philipp Zabel wrote:
> 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@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@pengutronix.de>
>
> on i.MX53-QSB with VGA via TVE.
Thanks much, Philipp.
Shawn
next prev parent reply other threads:[~2014-07-25 6:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-24 9:17 [PATCH] imx-drm: imx-drm-core: add suspend/resume support Shawn Guo
2014-07-24 9:38 ` Philipp Zabel
2014-07-25 6:31 ` Shawn Guo [this message]
2014-07-24 9:47 ` Lucas Stach
2014-07-24 9:54 ` Russell King - ARM Linux
2014-07-24 10:38 ` Daniel Vetter
2014-07-24 14:59 ` Shawn Guo
2014-07-25 8:20 ` Daniel Vetter
2014-07-24 9:56 ` Marc Kleine-Budde
2014-07-25 6:34 ` Shawn Guo
2014-07-25 5:46 ` Shawn Guo
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