[Intel-xe] [Intel-gfx] [PATCH 12/42] drm/i915/lnl: Add display definitions

[Matt Roper]

On Thu, Aug 24, 2023 at 08:49:42AM -0700, Lucas De Marchi wrote:
> On Wed, Aug 23, 2023 at 11:03:42AM -0700, Matt Roper wrote:
> > On Wed, Aug 23, 2023 at 10:07:10AM -0700, Lucas De Marchi wrote:
> > > From: Balasubramani Vivekanandan <balasubramani.vivekanandan at intel.com>
> > > 
> > > 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.
> > > 
> > > Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan at intel.com>
> > > Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
> > > ---
> > >  .../gpu/drm/i915/display/intel_display_device.c   | 15 +++++++++++++++
> > >  drivers/gpu/drm/i915/i915_drv.h                   |  1 +
> > >  2 files changed, 16 insertions(+)
> > > 
> > > diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c b/drivers/gpu/drm/i915/display/intel_display_device.c
> > > index f87470da25d0..b853cd0c704a 100644
> > > --- a/drivers/gpu/drm/i915/display/intel_display_device.c
> > > +++ b/drivers/gpu/drm/i915/display/intel_display_device.c
> > > @@ -727,6 +727,20 @@ static const struct intel_display_device_info xe_lpdp_display = {
> > >  		BIT(PORT_TC1) | BIT(PORT_TC2) | BIT(PORT_TC3) | BIT(PORT_TC4),
> > >  };
> > > 
> > > +static const struct intel_display_device_info xe2_lpd_display = {
> > > +	XE_LPD_FEATURES,
> > > +	.has_cdclk_crawl = 1,
> > > +	.has_cdclk_squash = 1,
> > 
> > XE_LPD_FEATURES, crawl, squash, transcoder mask, and port mask are all
> > common between Xe_LPD+ and Xe2_LPD.  Maybe we should add an
> > XE_LPDP_FEATURES macro first, and then re-use it here so that the deltas
> > are smaller and it's more obvious what the key changes are with this new
> > IP?
> 
> ack
> 
> > 
> > > +
> > > +	.__runtime_defaults.ip.ver = 20,
> > > +	.__runtime_defaults.fbc_mask = BIT(INTEL_FBC_A) | BIT(INTEL_FBC_B),
> > 
> > With Xe2, FBC is supported on all pipes now (bspec 68881, 68904).
> 
> intention was to only do this after
> "drm/i915/xe2lpd: FBC is now supported on all pipes". I guess I can
> reorder the patches to bring that one first and fix it.

I hadn't noticed that patch yet when I reviewed this one.  But maybe the
best bet is to drop this line in this patch (so you'll inherit the value
from XE_LPD[P]_FEATURES), and then that later patch will update it with
the right value.


Matt

> 
> 
> > 
> > > +	.__runtime_defaults.cpu_transcoder_mask =
> > > +		BIT(TRANSCODER_A) | BIT(TRANSCODER_B) |
> > > +		BIT(TRANSCODER_C) | BIT(TRANSCODER_D),
> > > +	.__runtime_defaults.port_mask = BIT(PORT_A) | BIT(PORT_B) |
> > > +		BIT(PORT_TC1) | BIT(PORT_TC2) | BIT(PORT_TC3) | BIT(PORT_TC4),
> > > +};
> > > +
> > >  __diag_pop();
> > > 
> > >  #undef INTEL_VGA_DEVICE
> > > @@ -795,6 +809,7 @@ 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 *
> > > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> > > index 07f79b1028e1..96ac9a9cc155 100644
> > > --- a/drivers/gpu/drm/i915/i915_drv.h
> > > +++ b/drivers/gpu/drm/i915/i915_drv.h
> > > @@ -574,6 +574,7 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
> > >  #define IS_DG2(i915)	IS_PLATFORM(i915, INTEL_DG2)
> > >  #define IS_PONTEVECCHIO(i915) IS_PLATFORM(i915, INTEL_PONTEVECCHIO)
> > >  #define IS_METEORLAKE(i915) IS_PLATFORM(i915, INTEL_METEORLAKE)
> > > +#define IS_LUNARLAKE(dev_priv)  0
> > 
> > As noted on the previous patch, we might be able to drop this completely
> > if we update the fake PCH and gmbus code to match on display IP.  Given
> > that PCH isn't even involved in south display handling anymore, that
> > seems like it might be reasonable?  If anything, we're more likely to
> > need to match on PICA ID (which has its own GMD_ID register) than base
> > platform at some point in the future.
> 
> ack
> 
> thanks
> Lucas De Marchi
> 
> > 
> > 
> > Matt
> > 
> > > 
> > >  #define IS_METEORLAKE_M(i915) \
> > >  	IS_SUBPLATFORM(i915, INTEL_METEORLAKE, INTEL_SUBPLATFORM_M)
> > > --
> > > 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