# --- T2-COPYRIGHT-NOTE-BEGIN ---
# T2 SDE: package/*/linux/hotfix-offb.patch.sparc64
# Copyright (C) 2024 The T2 SDE Project
# 
# This Copyright note is generated by scripts/Create-CopyPatch,
# more information can be found in the files COPYING and README.
# 
# This patch file is dual-licensed. It is available under the license the
# patched project is licensed under, as long as it is an OpenSource license
# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
# of the GNU General Public License version 2 as used by the T2 SDE.
# --- T2-COPYRIGHT-NOTE-END ---

--- linux-6.10/drivers/video/fbdev/Kconfig.vanilla	2024-09-23 22:31:37.163335541 +0200
+++ linux-6.10/drivers/video/fbdev/Kconfig	2024-09-23 22:32:15.446669040 +0200
@@ -269,7 +269,7 @@
 
 config FB_OF
 	tristate "Open Firmware frame buffer device support"
-	depends on FB && PPC && (!PPC_PSERIES || PCI)
+	depends on FB && (PPC && (!PPC_PSERIES || PCI) || (SPARC && PCI))
 	depends on !DRM_OFDRM
 	select APERTURE_HELPERS
 	select FB_IOMEM_HELPERS
--- linux-6.10/drivers/video/fbdev/offb.c.orig	2024-07-15 00:43:32.000000000 +0200
+++ linux-6.10/drivers/video/fbdev/offb.c	2024-09-24 12:21:14.546722392 +0200
@@ -134,6 +134,7 @@
 		return 0;
 
 	switch (par->cmap_type) {
+#ifndef __sparc__
 	case cmap_simple:
 		writeb(regno, par->cmap_adr);
 		writeb(red, par->cmap_data);
@@ -168,6 +169,7 @@
 		out_le32(((unsigned __iomem *) par->cmap_adr) + regno,
 			 (red << 16 | green << 8 | blue));
 		break;
+#endif
 	case cmap_avivo:
 		/* Write to both LUTs for now */
 		writel(1, par->cmap_adr + AVIVO_DC_LUT_RW_SELECT);
@@ -205,6 +207,7 @@
 	if (blank)
 		for (i = 0; i < 256; i++) {
 			switch (par->cmap_type) {
+#ifndef __sparc__
 			case cmap_simple:
 				writeb(i, par->cmap_adr);
 				for (j = 0; j < 3; j++)
@@ -236,6 +239,7 @@
 				out_le32(((unsigned __iomem *) par->cmap_adr) + i,
 					 0);
 				break;
+#endif
 			case cmap_avivo:
 				writel(1, par->cmap_adr + AVIVO_DC_LUT_RW_SELECT);
 				writeb(i, par->cmap_adr + AVIVO_DC_LUT_RW_INDEX);
@@ -628,7 +633,12 @@
  skip_addr:
 	if (address == OF_BAD_ADDR && addr_prop)
 		address = (u64)addr_prop;
+
+#if defined(__sparc__) && defined(CONFIG_PC)
+	if (1) {
+#else
 	if (address != OF_BAD_ADDR) {
+#endif
 #ifdef CONFIG_PCI
 		const __be32 *vidp, *didp;
 		u32 vid, did;
@@ -640,11 +650,23 @@
 			pdev = pci_get_device(vid, did, NULL);
 			if (!pdev || pci_enable_device(pdev))
 				return;
+#ifdef __sparc__
+			address = pci_resource_start (pdev, 0);
+#endif
 		}
 #endif
-		/* kludge for valkyrie */
+#ifdef __sparc__
+		if (!address)
+			return;
+#endif
+
+#ifdef __sparc__
+		if (of_node_name_eq(dp, "SUNW,XVR-300"))
+			address += 0x8000;
+#else
 		if (of_node_name_eq(dp, "valkyrie"))
 			address += 0x1000;
+#endif
 		offb_init_fb(parent, no_real_node ? "bootx" : NULL,
 			     width, height, depth, pitch, address,
 			     foreign_endian, no_real_node ? NULL : dp);
@@ -685,6 +710,10 @@
 
 static const struct of_device_id offb_of_match_display[] = {
 	{ .compatible = "display", },
+#ifdef __sparc__
+	{ .compatible = "VGA", }, /* Qemu */
+	{ .name = "SUNW,XVR-300", },
+#endif
 	{ },
 };
 MODULE_DEVICE_TABLE(of, offb_of_match_display);