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C/C++ Source or Header  |  2006-08-11  |  1.2 KB  |  45 lines
  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) */
  45.