arch/x86/video/fbdev.c

   1 /*
   2  * arch/i386/video/fbdev.c - i386 Framebuffer
   3  *
   4  * Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com>
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License.  See the file COPYING in the main directory of this archive
   8  * for more details.
   9  *
  10  */
  11 #include <linux/fb.h>
  12 #include <linux/pci.h>
  13
  14 int fb_is_primary_device(struct fb_info *info)
  15 {
  16         struct device *device = info->device;
  17         struct pci_dev *pci_dev = NULL;
  18         struct resource *res = NULL;
  19         int retval = 0;
  20
  21         if (device)
  22                 pci_dev = to_pci_dev(device);
  23
  24         if (pci_dev)
  25                 res = &pci_dev->resource[PCI_ROM_RESOURCE];
  26
  27         if (res && res->flags & IORESOURCE_ROM_SHADOW)
  28                 retval = 1;
  29
  30         return retval;
  31 }
  32 EXPORT_SYMBOL(fb_is_primary_device);