On Fri, Sep 08, 2023 at 06:25:04PM -0500, Lucas De Marchi wrote:
> On Thu, Sep 07, 2023 at 09:10:44AM -0700, Matt Roper wrote:
> > On Thu, Sep 07, 2023 at 08:37:32AM -0700, Lucas De Marchi wrote:
> > > From: Balasubramani Vivekanandan
> > >
> > > Add Lunar Lake platform definitions for i915 display. The support for
> > > LNL will be added to the xe driver, with i915 only driving the display
> > > side. Therefore define IS_LUNARLAKE to 0 to disable it when building the
> > > i915 module.
> >
> > This final sentence no longer matches the patch. But it might be worth
> > adding a different sentence saying something like "Xe2 display is
> > derived from the Xe_LPD+ IP; additional feature deltas will be
> > introduced in subsequent patches."
> >
> > >
> > > v2: Use a LPDP_FEATURES macro (Matt Roper)
> > >
> > > Signed-off-by: Balasubramani Vivekanandan
> > >
> > > Signed-off-by: Lucas De Marchi
> > > ---
> > > drivers/gpu/drm/i915/display/intel_display_device.c | 7 +++
> > > 1 file changed, 7 insertions(+)
> > >
> > > diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c
> > > b/drivers/gpu/drm/i915/display/intel_display_device.c
> > > index 089674e2f1d2..feafb0f94b06 100644
> > > --- a/drivers/gpu/drm/i915/display/intel_display_device.c
> > > +++ b/drivers/gpu/drm/i915/display/intel_display_device.c
> > > @@ -768,6 +768,12 @@ static const struct intel_display_device_info
> > > xe_lpdp_display = {
> > > .__runtime_defaults.fbc_mask = BIT(INTEL_FBC_A) | BIT(INTEL_FBC_B),
> > > };
> > >
> > > +static const struct intel_display_device_info xe2_lpd_display = {
> > > + XE_LPDP_FEATURES,
> > > +
> > > + .__runtime_defaults.ip.ver = 20,
> >
> > There's no need to set a default value here, right? If we've managed to
>
> unless we have a broken check for display version before this is
> initialized. I will give it a try and see what happens.
>
> But if we remove it here, we should also remove on previous patch. As
> far as I can see, it's true for Xe-LPD+ too. If we have a wrong check
> for version, I'd rather prefer it broken and a loud warning than it
> matching version 14 due to using the macro above.
Agreed, we shouldn't have it on Xe_LPD+ either. I meant to mention
that, but I guess I forgot.
Matt
>
> Lucas De Marchi
>
> > match this IP block, we already read out the GMD ID version and matched
> > it against the table below. We'll be assigning the real value directly
> > and shouldn't need this for anything.
> >
> >
> > Matt
> >
> > > +};
> > > +
> > > /*
> > > * Separate detection for no display cases to keep the display id array
> > > simple.
> > > *
> > > @@ -847,6 +853,7 @@ static const struct {
> > > const struct intel_display_device_info *display;
> > > } gmdid_display_map[] = {
> > > { 14, 0, &xe_lpdp_display },
> > > + { 20, 0, &xe2_lpd_display },
> > > };
> > >
> > > static const struct intel_display_device_info *
> > > --
> > > 2.40.1
> > >
> >
> > --
> > Matt Roper
> > Graphics Software Engineer
> > Linux GPU Platform Enablement
> > Intel Corporation
--
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation
