arch/powerpc/include/asm/parport.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * parport.h: platform-specific PC-style parport initialisation
   4  *
   5  * Copyright (C) 1999, 2000  Tim Waugh <tim@cyberelk.demon.co.uk>
   6  *
   7  * This file should only be included by drivers/parport/parport_pc.c.
   8  */
   9
  10 #ifndef _ASM_POWERPC_PARPORT_H
  11 #define _ASM_POWERPC_PARPORT_H
  12 #ifdef __KERNEL__
  13
  14 #include <asm/prom.h>
  15
  16 static int parport_pc_find_nonpci_ports (int autoirq, int autodma)
  17 {
  18         struct device_node *np;
  19         const u32 *prop;
  20         u32 io1, io2;
  21         int propsize;
  22         int count = 0;
  23         int virq;
  24
  25         for_each_compatible_node(np, "parallel", "pnpPNP,400") {
  26                 prop = of_get_property(np, "reg", &propsize);
  27                 if (!prop || propsize > 6*sizeof(u32))
  28                         continue;
  29                 io1 = prop[1]; io2 = prop[2];
  30
  31                 virq = irq_of_parse_and_map(np, 0);
  32                 if (!virq)
  33                         continue;
  34
  35                 if (parport_pc_probe_port(io1, io2, virq, autodma, NULL, 0)
  36                                 != NULL)
  37                         count++;
  38         }
  39         return count;
  40 }
  41
  42 #endif /* __KERNEL__ */
  43 #endif /* !(_ASM_POWERPC_PARPORT_H) */