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-rw-r--r--arch/x86/video/video-common.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/x86/video/video-common.c b/arch/x86/video/video-common.c
new file mode 100644
index 0000000000..81fc97a2a8
--- /dev/null
+++ b/arch/x86/video/video-common.c
@@ -0,0 +1,41 @@
+/*
+ * 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/module.h>
+#include <linux/pci.h>
+#include <linux/vgaarb.h>
+
+#include <asm/video.h>
+
+pgprot_t pgprot_framebuffer(pgprot_t prot,
+ unsigned long vm_start, unsigned long vm_end,
+ unsigned long offset)
+{
+ pgprot_val(prot) &= ~_PAGE_CACHE_MASK;
+ if (boot_cpu_data.x86 > 3)
+ pgprot_val(prot) |= cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS);
+
+ return prot;
+}
+EXPORT_SYMBOL(pgprot_framebuffer);
+
+bool video_is_primary_device(struct device *dev)
+{
+ struct pci_dev *pdev;
+
+ if (!dev_is_pci(dev))
+ return false;
+
+ pdev = to_pci_dev(dev);
+
+ return (pdev == vga_default_device());
+}
+EXPORT_SYMBOL(video_is_primary_device);
+
+MODULE_LICENSE("GPL");