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 #include <asm/fb.h> 14 15 int fb_is_primary_device(struct fb_info *info) 16 { 17 struct device *device = info->device; 18 struct pci_dev *default_device = vga_default_device(); 19 struct pci_dev *pci_dev; 20 struct resource *res; 21 22 if (!device || !dev_is_pci(device)) 23 return 0; 24 25 pci_dev = to_pci_dev(device); 26 27 if (default_device) { 28 if (pci_dev == default_device) 29 return 1; 30 return 0; 31 } 32 33 res = pci_dev->resource + PCI_ROM_RESOURCE; 34 35 if (res->flags & IORESOURCE_ROM_SHADOW) 36 return 1; 37 38 return 0; 39 } 40 EXPORT_SYMBOL(fb_is_primary_device); 41 MODULE_LICENSE("GPL"); 42