[Intel-gfx] [PATCH 1/2] drm/i915/lnl: Extend C10/C20 phy

[Gustavo Sousa]

Quoting Lucas De Marchi (2023-10-18 19:24:40-03:00)
>For Lunar Lake, DDI-A is connected to C10 PHY, while TC1-TC3 are connected
>to C20 phy, like in Meteor Lake. Update the check in intel_is_c10phy()
>accordingly.
>
>This reverts the change in commit e388ae97e225 ("drm/i915/display:
>Eliminate IS_METEORLAKE checks") that turned that into a display engine
>version check. The phy <-> port connection is very SoC-specific and not
>related to that version.
>
>IS_LUNARLAKE() is defined to 0 in i915 as it's expected that the
>(upcoming) xe driver is the one defining the platform, with i915 only
>driving the display side.
>
>Bspec: 70818
>Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>

Reviewed-by: Gustavo Sousa <gustavo.sousa at intel.com>

>---
> drivers/gpu/drm/i915/display/intel_cx0_phy.c | 2 +-
> drivers/gpu/drm/i915/i915_drv.h              | 1 +
> 2 files changed, 2 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
>index d414f6b7f993..e775f4721158 100644
>--- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
>+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
>@@ -31,7 +31,7 @@
> 
> bool intel_is_c10phy(struct drm_i915_private *i915, enum phy phy)
> {
>-        if (DISPLAY_VER_FULL(i915) == IP_VER(14, 0) && phy < PHY_C)
>+        if ((IS_LUNARLAKE(i915) || IS_METEORLAKE(i915)) && phy < PHY_C)
>                 return true;
> 
>         return false;
>diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
>index 6a2a78c61f21..259884b10d9a 100644
>--- a/drivers/gpu/drm/i915/i915_drv.h
>+++ b/drivers/gpu/drm/i915/i915_drv.h
>@@ -575,6 +575,7 @@ 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(i915) 0
> 
> #define IS_DG2_G10(i915) \
>         IS_SUBPLATFORM(i915, INTEL_DG2, INTEL_SUBPLATFORM_G10)
>-- 
>2.40.1
>