include/asm-powerpc/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 extern struct parport *parport_pc_probe_port (unsigned long int base,
  16                                               unsigned long int base_hi,
  17                                               int irq, int dma,
  18                                               struct pci_dev *dev);
  19
  20 static int __devinit parport_pc_find_nonpci_ports (int autoirq, int autodma)
  21 {
  22         struct device_node *np;
  23         u32 *prop;
  24         u32 io1, io2;
  25         int propsize;
  26         int count = 0;
  27         for (np = NULL; (np = of_find_compatible_node(np,
  28                                                       "parallel",
  29                                                       "pnpPNP,400")) != NULL;) {
  30                 prop = (u32 *)get_property(np, "reg", &propsize);
  31                 if (!prop || propsize > 6*sizeof(u32))
  32                         continue;
  33                 io1 = prop[1]; io2 = prop[2];
  34                 prop = (u32 *)get_property(np, "interrupts", NULL);
  35                 if (!prop)
  36                         continue;
  37                 if (parport_pc_probe_port(io1, io2, prop[0], autodma, NULL) != NULL)
  38                         count++;
  39         }
  40         return count;
  41 }
  42
  43 #endif /* __KERNEL__ */
  44 #endif /* !(_ASM_POWERPC_PARPORT_H) */