LXR linux/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
  15static 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) */
  45