[Gta04-owner] Linux 3.2-rc2 on GTA04

[NeilBrown]

On Fri, 25 Nov 2011 00:13:08 +0100 Johannes Schauer <j.schauer at email.de>
wrote:

> Hi,
> 
> sorry for the wait but my battery died and I'm recharging them using my
> nokia phone since apparently my gta04 refuses to charge them.
> 
> On Fri, Nov 25, 2011 at 09:54:10AM +1100, NeilBrown wrote:
> > So you don't see::
> > 
> > [   20.786285] td028ttec1_panel_enable()
> > [   20.790069] gta04_enable_lcd()
> > 
> > at all?
> 
> there is, earlier in the boot process (this is probably why i can see
> the penguin properly)
> 
> [   19.072143] Console: switching to colour frame buffer device 128x48
> [   19.091003] td028ttec1_panel_enable()
> [   19.094818] gta04_enable_lcd()
> [   19.114501] td028ttec1_panel_resume()
> [   19.333587] driver: 'omapfb': driver_bound: bound to device 'omapfb'
> 

Hi,
 I think I've managed to reproduce your problem by using

  TERM=linux  setterm -blank force  <  /dev/tty1

to blank the screen and

  TERM=linux  setterm -blank poke  <  /dev/tty1


to wake it up again - this doesn't unblank properly just like you reported.

It seems that 
   https://gitorious.org/gta04/gta04-kernel/commit/e871b67b2a52111c036995004bb126f28ba2c5af

added a call to ->platform_disable in td028ttec1_panel_suspend(), but didn't
add a matching call to ->platform_enable in td028ttec1_panel_resume().

So this patch might fix it.

diff --git a/drivers/video/omap2/displays/panel-tpo-td028ttec1.c b/drivers/video/omap2/displays/panel-tpo-td028ttec1.c
index bbbf1c3..224a9ff 100644
--- a/drivers/video/omap2/displays/panel-tpo-td028ttec1.c
+++ b/drivers/video/omap2/displays/panel-tpo-td028ttec1.c
@@ -379,6 +379,9 @@ static int td028ttec1_panel_resume(struct omap_dss_device *dssdev)
 		return -EIO;
 
 	// turn on backlight
+	if (dssdev->platform_enable)
+		dssdev->platform_enable(dssdev);
+
 	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 	
 	return rc ? -EIO : 0;


Please let me know if it helps.

NeilBrown
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