arch/mips/sni/eisa.c

   1 /*
   2  * Virtual EISA root driver.
   3  * Acts as a placeholder if we don't have a proper EISA bridge.
   4  *
   5  * (C) 2003 Marc Zyngier <maz@wild-wind.fr.eu.org>
   6  * modified for SNI usage by Thomas Bogendoerfer
   7  *
   8  * This code is released under the GPL version 2.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/eisa.h>
  14 #include <linux/init.h>
  15
  16 /* The default EISA device parent (virtual root device).
  17  * Now use a platform device, since that's the obvious choice. */
  18
  19 static struct platform_device eisa_root_dev = {
  20         .name = "eisa",
  21         .id   = 0,
  22 };
  23
  24 static struct eisa_root_device eisa_bus_root = {
  25         .dev           = &eisa_root_dev.dev,
  26         .bus_base_addr = 0,
  27         .res           = &ioport_resource,
  28         .slots         = EISA_MAX_SLOTS,
  29         .dma_mask      = 0xffffffff,
  30         .force_probe   = 1,
  31 };
  32
  33 int __init sni_eisa_root_init(void)
  34 {
  35         int r;
  36
  37         r = platform_device_register(&eisa_root_dev);
  38         if (!r)
  39                 return r;
  40
  41         eisa_root_dev.dev.driver_data = &eisa_bus_root;
  42
  43         if (eisa_root_register(&eisa_bus_root)) {
  44                 /* A real bridge may have been registered before
  45                  * us. So quietly unregister. */
  46                 platform_device_unregister(&eisa_root_dev);
  47                 return -1;
  48         }
  49         return 0;
  50 }