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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /arch/x86/video/fbdev.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86/video/fbdev.c')
-rw-r--r--arch/x86/video/fbdev.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/x86/video/fbdev.c b/arch/x86/video/fbdev.c
new file mode 100644
index 0000000000..49a0452402
--- /dev/null
+++ b/arch/x86/video/fbdev.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ */
+
+#include <linux/fb.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/vgaarb.h>
+#include <asm/fb.h>
+
+void fb_pgprotect(struct file *file, struct vm_area_struct *vma, unsigned long off)
+{
+ unsigned long prot;
+
+ prot = pgprot_val(vma->vm_page_prot) & ~_PAGE_CACHE_MASK;
+ if (boot_cpu_data.x86 > 3)
+ pgprot_val(vma->vm_page_prot) =
+ prot | cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS);
+}
+EXPORT_SYMBOL(fb_pgprotect);
+
+int fb_is_primary_device(struct fb_info *info)
+{
+ struct device *device = info->device;
+ struct pci_dev *pci_dev;
+
+ if (!device || !dev_is_pci(device))
+ return 0;
+
+ pci_dev = to_pci_dev(device);
+
+ if (pci_dev == vga_default_device())
+ return 1;
+ return 0;
+}
+EXPORT_SYMBOL(fb_is_primary_device);
+
+MODULE_LICENSE("GPL");