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 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_each_compatible_node(np, "parallel", "pnpPNP,400") {
  25                 prop = of_get_property(np, "reg", &propsize);
  26                 if (!prop || propsize > 6*sizeof(u32))
  27                         continue;
  28                 io1 = prop[1]; io2 = prop[2];
  29
  30                 virq = irq_of_parse_and_map(np, 0);
  31                 if (virq == NO_IRQ)
  32                         continue;
  33
  34                 if (parport_pc_probe_port(io1, io2, virq, autodma, NULL, 0)
  35                                 != NULL)
  36                         count++;
  37         }
  38         return count;
  39 }
  40
  41 #endif /* __KERNEL__ */
  42 #endif /* !(_ASM_POWERPC_PARPORT_H) */