Re: [Linux-fbdev-devel] [REVIEW PATCH 8/9] DSS: support for Beagle Board

[Tomi V. <tom...@no...>]

On Tue, 2008-11-04 at 18:28 +0100, ext Koen Kooi wrote:
> Op 4 nov 2008, om 17:10 heeft Tomi Valkeinen het volgende geschreven:
> 
> > Signed-off-by: Tomi Valkeinen <tom...@no...>
> > ---
> >
> > arch/arm/mach-omap2/board-omap3beagle.c |  121 ++++++++++++++++++++++ 
> > ++++++---
> > 1 files changed, 108 insertions(+), 13 deletions(-)
> >
> > +static struct omap_display_data beagle_display_data_dvi = {
> > +	.type = OMAP_DISPLAY_TYPE_DPI,
> > +	.name = "dvi",
> > +	.panel_name = "panel-dvi",
> > +	.u.dpi.data_lines = 24,
> > +	.panel_reset_gpio = 170,
> > +	.panel_enable = beagle_enable_dvi,
> > +	.panel_disable = beagle_disable_dvi,
> 
> gpio 170 is the enable (or disable, I forget which) for the DVI framer  
> (TFP410), not a reset gpio. It would be nice to have a way to enable/ 
> disable the framer  from userspace since it burns 60-100mA.

Well, is there a big difference between reset and enable? Anyway, you
can do

echo "dvi e:0" > /sys/devices/platform/omapfb/displays

and it will turn off the power.

Or, alternatively, use the framebuffer blanking, although that has not
been implemented to the panel-dvi.c (it's in panel-sdp3430.c). 

> regards,
> 
> Koen

 Tom