1 /* 2 * Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com> 3 * 4 * This file is subject to the terms and conditions of the GNU General Public 5 * License. See the file COPYING in the main directory of this archive 6 * for more details. 7 * 8 */ 9 #include <linux/fb.h> 10 #include <linux/pci.h> 11 #include <linux/module.h> 12 #include <linux/vgaarb.h> 13 fb_is_primary_device(struct fb_info * info)14int fb_is_primary_device(struct fb_info *info) 15 { 16 struct device *device = info->device; 17 struct pci_dev *default_device = vga_default_device(); 18 struct pci_dev *pci_dev; 19 struct resource *res; 20 21 if (!device || !dev_is_pci(device)) 22 return 0; 23 24 pci_dev = to_pci_dev(device); 25 26 if (default_device) { 27 if (pci_dev == default_device) 28 return 1; 29 return 0; 30 } 31 32 res = pci_dev->resource + PCI_ROM_RESOURCE; 33 34 if (res->flags & IORESOURCE_ROM_SHADOW) 35 return 1; 36 37 return 0; 38 } 39 EXPORT_SYMBOL(fb_is_primary_device); 40 MODULE_LICENSE("GPL"); 41