drm/i915/rpl-s: Add stepping info

Add stepping-substepping info in
accordance to BSpec changes.
Though it looks weird, the revision ID
for the newer stepping is indeed backwards
and is in accordance to the spec.

v2: Rearrange the platforms in logical order (Matt)

Bspec: 53655
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220125223625.4139326-1-anusha.srivatsa@intel.com

drivers/gpu/drm/i915/intel_step.c

@@ -122,6 +122,11 @@ static const struct intel_step_info dg2_g11_revid_step_tbl[] = {
 	[0x5] = { COMMON_GT_MEDIA_STEP(B1), .display_step = STEP_C0 },
 };
 
+static const struct intel_step_info adls_rpls_revids[] = {
+	[0x4] = { COMMON_GT_MEDIA_STEP(D0), .display_step = STEP_D0 },
+	[0xC] = { COMMON_GT_MEDIA_STEP(D0), .display_step = STEP_C0 },
+};
+
 void intel_step_init(struct drm_i915_private *i915)
 {
 	const struct intel_step_info *revids = NULL;
@@ -141,6 +146,9 @@ void intel_step_init(struct drm_i915_private *i915)
 	} else if (IS_ALDERLAKE_P(i915)) {
 		revids = adlp_revids;
 		size = ARRAY_SIZE(adlp_revids);
+	} else if (IS_ADLS_RPLS(i915)) {
+		revids = adls_rpls_revids;
+		size = ARRAY_SIZE(adls_rpls_revids);
 	} else if (IS_ALDERLAKE_S(i915)) {
 		revids = adls_revids;
 		size = ARRAY_SIZE(adls_revids);