release/src-rt-6.x.4708/linux/linux-2.6.36/arch/powerpc/include/asm/parport.h

   1 /*
   2  * parport.h: platform-specific PC-style parport initialisation
   3  *
   4  * Copyright (C) 1999, 2000  Tim Waugh <tim@cyberelk.demon.co.uk>
   5  *
   6  * This file should only be included by drivers/parport/parport_pc.c.
   7  */
   8
   9 #ifndef _ASM_POWERPC_PARPORT_H
  10 #define _ASM_POWERPC_PARPORT_H
  11 #ifdef __KERNEL__
  12
  13 #include <asm/prom.h>
  14
  15 static int __devinit parport_pc_find_nonpci_ports (int autoirq, int autodma)
  16 {
  17         struct device_node *np;
  18         const u32 *prop;
  19         u32 io1, io2;
  20         int propsize;
  21         int count = 0;
  22         int virq;
  23
  24         for (np = NULL; (np = of_find_compatible_node(np,
  25                                                       "parallel",
  26                                                       "pnpPNP,400")) != NULL;) {
  27                 prop = of_get_property(np, "reg", &propsize);
  28                 if (!prop || propsize > 6*sizeof(u32))
  29                         continue;
  30                 io1 = prop[1]; io2 = prop[2];
  31
  32                 virq = irq_of_parse_and_map(np, 0);
  33                 if (virq == NO_IRQ)
  34                         continue;
  35
  36                 if (parport_pc_probe_port(io1, io2, virq, autodma, NULL, 0)
  37                                 != NULL)
  38                         count++;
  39         }
  40         return count;
  41 }
  42
  43 #endif /* __KERNEL__ */
  44 #endif /* !(_ASM_POWERPC_PARPORT_H) */