[PATCH v2 1/2] drm/i915/display: Add MTL subplatforms definition

[Dnyaneshwar Bhadane]

Separate MTL-U platform PCI ids in one define macro.

Add the MTL U/ARL U as subplatform member in MTL platform description
structure to use display.platform.<platform> from intel_display
structure instead of IS_<PLATFORM>() in display code path.

v2:
- Club ARL-u in MTL and identify ARL-u as MTL-u subplatform(Jani)

Signed-off-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_device.c | 13 +++++++++++++
 drivers/gpu/drm/i915/display/intel_display_device.h |  1 +
 include/drm/intel/pciids.h                          |  7 +++++--
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c b/drivers/gpu/drm/i915/display/intel_display_device.c
index 68cb7f9b9ef3..738ae522c8f4 100644
--- a/drivers/gpu/drm/i915/display/intel_display_device.c
+++ b/drivers/gpu/drm/i915/display/intel_display_device.c
@@ -1357,6 +1357,12 @@ static const struct intel_display_device_info xe2_hpd_display = {
 		BIT(PORT_TC1) | BIT(PORT_TC2) | BIT(PORT_TC3) | BIT(PORT_TC4),
 };
 
+static const u16 mtl_u_ids[] = {
+	INTEL_MTL_U_IDS(ID),
+	INTEL_ARL_U_IDS(ID),
+	0
+};
+
 /*
  * Do not initialize the .info member of the platform desc for GMD ID based
  * platforms. Their display will be probed automatically based on the IP version
@@ -1364,6 +1370,13 @@ static const struct intel_display_device_info xe2_hpd_display = {
  */
 static const struct platform_desc mtl_desc = {
 	PLATFORM(meteorlake),
+	.subplatforms = (const struct subplatform_desc[]) {
+		{
+			SUBPLATFORM(meteorlake, u),
+			.pciidlist = mtl_u_ids,
+		},
+		{},
+	}
 };
 
 static const struct platform_desc lnl_desc = {
diff --git a/drivers/gpu/drm/i915/display/intel_display_device.h b/drivers/gpu/drm/i915/display/intel_display_device.h
index 9a333d9e6601..5853472bb9c2 100644
--- a/drivers/gpu/drm/i915/display/intel_display_device.h
+++ b/drivers/gpu/drm/i915/display/intel_display_device.h
@@ -96,6 +96,7 @@ struct pci_dev;
 	func(dg2_g12) \
 	/* Display ver 14 (based on GMD ID) */ \
 	func(meteorlake) \
+	func(meteorlake_u) \
 	/* Display ver 20 (based on GMD ID) */ \
 	func(lunarlake) \
 	/* Display ver 14.1 (based on GMD ID) */ \
diff --git a/include/drm/intel/pciids.h b/include/drm/intel/pciids.h
index 77c826589ec1..9c3a339e26af 100644
--- a/include/drm/intel/pciids.h
+++ b/include/drm/intel/pciids.h
@@ -811,9 +811,12 @@
 	INTEL_ARL_S_IDS(MACRO__, ## __VA_ARGS__)
 
 /* MTL */
-#define INTEL_MTL_IDS(MACRO__, ...) \
+#define INTEL_MTL_U_IDS(MACRO__, ...) \
 	MACRO__(0x7D40, ## __VA_ARGS__), \
-	MACRO__(0x7D45, ## __VA_ARGS__), \
+	MACRO__(0x7D45, ## __VA_ARGS__)
+
+#define INTEL_MTL_IDS(MACRO__, ...) \
+	INTEL_MTL_U_IDS(MACRO__, ## __VA_ARGS__), \
 	MACRO__(0x7D55, ## __VA_ARGS__), \
 	MACRO__(0x7D60, ## __VA_ARGS__), \
 	MACRO__(0x7DD5, ## __VA_ARGS__)
-- 
2.34.1