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kernel/linux-rt-4.4.41/arch/powerpc/include/asm/parport.h 926 Bytes
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  /*
   * parport.h: platform-specific PC-style parport initialisation
   *
   * Copyright (C) 1999, 2000  Tim Waugh <tim@cyberelk.demon.co.uk>
   *
   * This file should only be included by drivers/parport/parport_pc.c.
   */
  
  #ifndef _ASM_POWERPC_PARPORT_H
  #define _ASM_POWERPC_PARPORT_H
  #ifdef __KERNEL__
  
  #include <asm/prom.h>
  
  static int parport_pc_find_nonpci_ports (int autoirq, int autodma)
  {
  	struct device_node *np;
  	const u32 *prop;
  	u32 io1, io2;
  	int propsize;
  	int count = 0;
  	int virq;
  
  	for_each_compatible_node(np, "parallel", "pnpPNP,400") {
  		prop = of_get_property(np, "reg", &propsize);
  		if (!prop || propsize > 6*sizeof(u32))
  			continue;
  		io1 = prop[1]; io2 = prop[2];
  
  		virq = irq_of_parse_and_map(np, 0);
  		if (virq == NO_IRQ)
  			continue;
  
  		if (parport_pc_probe_port(io1, io2, virq, autodma, NULL, 0)
  				!= NULL)
  			count++;
  	}
  	return count;
  }
  
  #endif /* __KERNEL__ */
  #endif /* !(_ASM_POWERPC_PARPORT_H) */