diff options
Diffstat (limited to 'kernel/arch/x86/video')
| -rw-r--r-- | kernel/arch/x86/video/Makefile | 1 | ||||
| -rw-r--r-- | kernel/arch/x86/video/fbdev.c | 42 |
2 files changed, 43 insertions, 0 deletions
diff --git a/kernel/arch/x86/video/Makefile b/kernel/arch/x86/video/Makefile new file mode 100644 index 000000000..2c447c94a --- /dev/null +++ b/kernel/arch/x86/video/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_FB) += fbdev.o diff --git a/kernel/arch/x86/video/fbdev.c b/kernel/arch/x86/video/fbdev.c new file mode 100644 index 000000000..d5644bbe8 --- /dev/null +++ b/kernel/arch/x86/video/fbdev.c @@ -0,0 +1,42 @@ +/* + * 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/pci.h> +#include <linux/module.h> +#include <linux/vgaarb.h> + +int fb_is_primary_device(struct fb_info *info) +{ + struct device *device = info->device; + struct pci_dev *pci_dev = NULL; + struct pci_dev *default_device = vga_default_device(); + struct resource *res = NULL; + + if (device) + pci_dev = to_pci_dev(device); + + if (!pci_dev) + return 0; + + if (default_device) { + if (pci_dev == default_device) + return 1; + else + return 0; + } + + res = &pci_dev->resource[PCI_ROM_RESOURCE]; + + if (res && res->flags & IORESOURCE_ROM_SHADOW) + return 1; + + return 0; +} +EXPORT_SYMBOL(fb_is_primary_device); +MODULE_LICENSE("GPL"); |