drm/i915: Add RPL-U sub platform

Separate out RPLU device ids and add them to both RPL and
newly created RPL-U subplatforms.

v2: (Matt)
    - Sort PCI-IDs numerically
    - Name the sub-platform to accurately depict what it is for
    - Make RPL-U part of RPL subplatform

v3: revert to RPL-U subplatform (Jani)

v4: (Jani)
    - Add RPL-U ids to RPL-P platform
    - Remove redundant comment
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130100806.1373883-2-chaitanya.kumar.borah@intel.com

drivers/gpu/drm/i915/i915_drv.h

@@ -580,6 +580,8 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 	IS_SUBPLATFORM(dev_priv, INTEL_ALDERLAKE_P, INTEL_SUBPLATFORM_N)
 #define IS_ADLP_RPLP(dev_priv) \
 	IS_SUBPLATFORM(dev_priv, INTEL_ALDERLAKE_P, INTEL_SUBPLATFORM_RPL)
+#define IS_ADLP_RPLU(dev_priv) \
+	IS_SUBPLATFORM(dev_priv, INTEL_ALDERLAKE_P, INTEL_SUBPLATFORM_RPLU)
 #define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
 				    (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
 #define IS_BDW_ULT(dev_priv) \

drivers/gpu/drm/i915/intel_device_info.c

@@ -207,6 +207,10 @@ static const u16 subplatform_rpl_ids[] = {
 	INTEL_RPLP_IDS(0),
 };
 
+static const u16 subplatform_rplu_ids[] = {
+	INTEL_RPLU_IDS(0),
+};
+
 static const u16 subplatform_g10_ids[] = {
 	INTEL_DG2_G10_IDS(0),
 	INTEL_ATS_M150_IDS(0),
@@ -274,6 +278,9 @@ static void intel_device_info_subplatform_init(struct drm_i915_private *i915)
 	} else if (find_devid(devid, subplatform_rpl_ids,
 			      ARRAY_SIZE(subplatform_rpl_ids))) {
 		mask = BIT(INTEL_SUBPLATFORM_RPL);
+		if (find_devid(devid, subplatform_rplu_ids,
+			       ARRAY_SIZE(subplatform_rplu_ids)))
+			mask |= BIT(INTEL_SUBPLATFORM_RPLU);
 	} else if (find_devid(devid, subplatform_g10_ids,
 			      ARRAY_SIZE(subplatform_g10_ids))) {
 		mask = BIT(INTEL_SUBPLATFORM_G10);

drivers/gpu/drm/i915/intel_device_info.h

@@ -127,6 +127,7 @@ enum intel_platform {
  * bit set
  */
 #define INTEL_SUBPLATFORM_N    1
+#define INTEL_SUBPLATFORM_RPLU  2
 
 /* MTL */
 #define INTEL_SUBPLATFORM_M	0

include/drm/i915_pciids.h

@@ -685,14 +685,18 @@
 	INTEL_VGA_DEVICE(0xA78A, info), \
 	INTEL_VGA_DEVICE(0xA78B, info)
 
+/* RPL-U */
+#define INTEL_RPLU_IDS(info) \
+	INTEL_VGA_DEVICE(0xA721, info), \
+	INTEL_VGA_DEVICE(0xA7A1, info), \
+	INTEL_VGA_DEVICE(0xA7A9, info)
+
 /* RPL-P */
 #define INTEL_RPLP_IDS(info) \
+	INTEL_RPLU_IDS(info), \
 	INTEL_VGA_DEVICE(0xA720, info), \
-	INTEL_VGA_DEVICE(0xA721, info), \
 	INTEL_VGA_DEVICE(0xA7A0, info), \
-	INTEL_VGA_DEVICE(0xA7A1, info), \
-	INTEL_VGA_DEVICE(0xA7A8, info), \
-	INTEL_VGA_DEVICE(0xA7A9, info)
+	INTEL_VGA_DEVICE(0xA7A8, info)
 
 /* DG2 */
 #define INTEL_DG2_G10_IDS(info) \