On 07/24/2014 11:47 AM, Lucas Stach wrote: > 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@xxxxxxxxxxxxx> >> --- >> Tested with HDMI and LVDS. It'd be great if someone can help test TVE >> to ensure the patch doesn't break anything. >> >> drivers/staging/imx-drm/imx-drm-core.c | 39 ++++++++++++++++++++++++++++++++++ >> 1 file changed, 39 insertions(+) >> >> diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c >> index def8280d7ee6..b0ea1f0ed32f 100644 >> --- a/drivers/staging/imx-drm/imx-drm-core.c >> +++ b/drivers/staging/imx-drm/imx-drm-core.c >> @@ -696,6 +696,44 @@ static int imx_drm_platform_remove(struct platform_device *pdev) >> return 0; >> } >> >> +#if CONFIG_PM_SLEEP > > use #ifdef ...or remove #if/#ifdef and mark as __maybe_unused Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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