[Intel-gfx] [PATCH v3 2/2] drivers: i915: Default max backlight brightness value
mjg59 at srcf.ucam.org
Tue Nov 8 14:10:13 PST 2011
On Tue, Nov 08, 2011 at 02:05:14PM -0800, Simon Que wrote:
> On Tue, Nov 8, 2011 at 1:42 PM, Matthew Garrett <mjg59 at srcf.ucam.org> wrote:
> > I feel like I'm missing something here. Where's the firmware getting its
> > initial value from?
> My understanding is that normally, the firmware's VBIOS can program the
> value of the PWM register. But if the firmware doesn't have the VBIOS
> initialization code, it can still provide an initial value using this new
> param, as part of the kernel command line. Either way, it's up to the
> person writing or selecting the firmware to decide what initial value to
So the firmware doesn't set up graphics itself, it's entirely up to the
kernel? What hardware is this for?
Matthew Garrett | mjg59 at srcf.ucam.org
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