1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com> 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public 5*4882a593Smuzhiyun * License. See the file COPYING in the main directory of this archive 6*4882a593Smuzhiyun * for more details. 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun #include <linux/fb.h> 10*4882a593Smuzhiyun #include <linux/pci.h> 11*4882a593Smuzhiyun #include <linux/module.h> 12*4882a593Smuzhiyun #include <linux/vgaarb.h> 13*4882a593Smuzhiyun fb_is_primary_device(struct fb_info * info)14*4882a593Smuzhiyunint fb_is_primary_device(struct fb_info *info) 15*4882a593Smuzhiyun { 16*4882a593Smuzhiyun struct device *device = info->device; 17*4882a593Smuzhiyun struct pci_dev *default_device = vga_default_device(); 18*4882a593Smuzhiyun struct pci_dev *pci_dev; 19*4882a593Smuzhiyun struct resource *res; 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun if (!device || !dev_is_pci(device)) 22*4882a593Smuzhiyun return 0; 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun pci_dev = to_pci_dev(device); 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun if (default_device) { 27*4882a593Smuzhiyun if (pci_dev == default_device) 28*4882a593Smuzhiyun return 1; 29*4882a593Smuzhiyun return 0; 30*4882a593Smuzhiyun } 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun res = pci_dev->resource + PCI_ROM_RESOURCE; 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun if (res->flags & IORESOURCE_ROM_SHADOW) 35*4882a593Smuzhiyun return 1; 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun return 0; 38*4882a593Smuzhiyun } 39*4882a593Smuzhiyun EXPORT_SYMBOL(fb_is_primary_device); 40*4882a593Smuzhiyun MODULE_LICENSE("GPL"); 41