diff options
Diffstat (limited to 'arch/x86/video')
-rw-r--r-- | arch/x86/video/Makefile | 2 | ||||
-rw-r--r-- | arch/x86/video/fbdev.c | 43 |
2 files changed, 45 insertions, 0 deletions
diff --git a/arch/x86/video/Makefile b/arch/x86/video/Makefile new file mode 100644 index 0000000000..5ebe48752f --- /dev/null +++ b/arch/x86/video/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_FB_CORE) += fbdev.o 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"); |