On Tue, 10 Apr 2012 23:50:45 +0200
Daniel Vetter <daniel at ffwll.ch> wrote:
> On Tue, Apr 10, 2012 at 11:58:05AM -0700, Jesse Barnes wrote:
> > On IVB, there are two sets of panel backlight regs: one in the CPU and
> > one in the PCH. The CPU ones aren't generally used, so on IVB make sure
> > we allow the PCH regs to actually control the backlight.
> >
> > Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
> > ---
> > drivers/gpu/drm/i915/intel_panel.c | 12 ++++++++++++
> > 1 files changed, 12 insertions(+), 0 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
> > index cad45ff..b007c4e 100644
> > --- a/drivers/gpu/drm/i915/intel_panel.c
> > +++ b/drivers/gpu/drm/i915/intel_panel.c
> > @@ -306,6 +306,18 @@ static void intel_panel_init_backlight(struct drm_device *dev)
> > {
> > struct drm_i915_private *dev_priv = dev->dev_private;
> >
> > + /*
> > + * IVB has CPU eDP backlight regs too, set things up to let the
> > + * PCH regs control the backlight
> > + */
> > + if (IS_IVYBRIDGE(dev)) {
> > + u32 pwm;
>
> That pwm thing seems unused ...
> -Daniel
Oh yeah we can drop that now.
--
Jesse Barnes, Intel Open Source Technology Center
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