Merge tag 'drm-intel-fixes-2025-11-20' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-fixes

- Wildcat Lake and Panther Lake detangled for display fixes (Dnyaneshwar)

Signed-off-by: Dave Airlie <[email protected]>

From: Rodrigo Vivi <[email protected]>
Link: https://patch.msgid.link/[email protected]

Author: airlied

drivers/gpu/drm/i915/display/intel_cx0_phy.c

@@ -39,14 +39,12 @@ bool intel_encoder_is_c10phy(struct intel_encoder *encoder)
 	struct intel_display *display = to_intel_display(encoder);
 	enum phy phy = intel_encoder_to_phy(encoder);
 
-	/* PTL doesn't have a PHY connected to PORT B; as such,
-	 * there will never be a case where PTL uses PHY B.
-	 * WCL uses PORT A and B with the C10 PHY.
-	 * Reusing the condition for WCL and extending it for PORT B
-	 * should not cause any issues for PTL.
-	 */
-	if (display->platform.pantherlake && phy < PHY_C)
-		return true;
+	if (display->platform.pantherlake) {
+		if (display->platform.pantherlake_wildcatlake)
+			return phy <= PHY_B;
+		else
+			return phy == PHY_A;
+	}
 
 	if ((display->platform.lunarlake || display->platform.meteorlake) && phy < PHY_C)
 		return true;

drivers/gpu/drm/i915/display/intel_display_device.c

@@ -1404,8 +1404,20 @@ static const struct platform_desc bmg_desc = {
 	PLATFORM_GROUP(dgfx),
 };
 
+static const u16 wcl_ids[] = {
+	INTEL_WCL_IDS(ID),
+	0
+};
+
 static const struct platform_desc ptl_desc = {
 	PLATFORM(pantherlake),
+	.subplatforms = (const struct subplatform_desc[]) {
+		{
+			SUBPLATFORM(pantherlake, wildcatlake),
+			.pciidlist = wcl_ids,
+		},
+		{},
+	}
 };
 
 __diag_pop();
@@ -1482,6 +1494,7 @@ static const struct {
 	INTEL_LNL_IDS(INTEL_DISPLAY_DEVICE, &lnl_desc),
 	INTEL_BMG_IDS(INTEL_DISPLAY_DEVICE, &bmg_desc),
 	INTEL_PTL_IDS(INTEL_DISPLAY_DEVICE, &ptl_desc),
+	INTEL_WCL_IDS(INTEL_DISPLAY_DEVICE, &ptl_desc),
 };
 
 static const struct {

drivers/gpu/drm/i915/display/intel_display_device.h

@@ -101,7 +101,9 @@ struct pci_dev;
 	/* Display ver 14.1 (based on GMD ID) */ \
 	func(battlemage) \
 	/* Display ver 30 (based on GMD ID) */ \
-	func(pantherlake)
+	func(pantherlake) \
+	func(pantherlake_wildcatlake)
+
 
 #define __MEMBER(name) unsigned long name:1;
 #define __COUNT(x) 1 +

drivers/gpu/drm/i915/display/intel_dmc.c

@@ -127,6 +127,9 @@ static bool dmc_firmware_param_disabled(struct intel_display *display)
 #define DISPLAY_VER13_DMC_MAX_FW_SIZE	0x20000
 #define DISPLAY_VER12_DMC_MAX_FW_SIZE	ICL_DMC_MAX_FW_SIZE
 
+#define XE3LPD_3002_DMC_PATH		DMC_PATH(xe3lpd_3002)
+MODULE_FIRMWARE(XE3LPD_3002_DMC_PATH);
+
 #define XE3LPD_DMC_PATH			DMC_PATH(xe3lpd)
 MODULE_FIRMWARE(XE3LPD_DMC_PATH);
 
@@ -183,9 +186,10 @@ static const char *dmc_firmware_default(struct intel_display *display, u32 *size
 {
 	const char *fw_path = NULL;
 	u32 max_fw_size = 0;
-
-	if (DISPLAY_VERx100(display) == 3002 ||
-	    DISPLAY_VERx100(display) == 3000) {
+	if (DISPLAY_VERx100(display) == 3002) {
+		fw_path = XE3LPD_3002_DMC_PATH;
+		max_fw_size = XE2LPD_DMC_MAX_FW_SIZE;
+	} else if (DISPLAY_VERx100(display) == 3000) {
 		fw_path = XE3LPD_DMC_PATH;
 		max_fw_size = XE2LPD_DMC_MAX_FW_SIZE;
 	} else if (DISPLAY_VERx100(display) == 2000) {

drivers/gpu/drm/xe/xe_pci.c

@@ -375,6 +375,7 @@ static const struct pci_device_id pciidlist[] = {
 	INTEL_LNL_IDS(INTEL_VGA_DEVICE, &lnl_desc),
 	INTEL_BMG_IDS(INTEL_VGA_DEVICE, &bmg_desc),
 	INTEL_PTL_IDS(INTEL_VGA_DEVICE, &ptl_desc),
+	INTEL_WCL_IDS(INTEL_VGA_DEVICE, &ptl_desc),
 	{ }
 };
 MODULE_DEVICE_TABLE(pci, pciidlist);

include/drm/intel/pciids.h

@@ -877,7 +877,10 @@
 	MACRO__(0xB08F, ## __VA_ARGS__), \
 	MACRO__(0xB090, ## __VA_ARGS__), \
 	MACRO__(0xB0A0, ## __VA_ARGS__), \
-	MACRO__(0xB0B0, ## __VA_ARGS__), \
+	MACRO__(0xB0B0, ## __VA_ARGS__)
+
+/* WCL */
+#define INTEL_WCL_IDS(MACRO__, ...) \
 	MACRO__(0xFD80, ## __VA_ARGS__), \
 	MACRO__(0xFD81, ## __VA_ARGS__)