include/asm/parport.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * parport.h: platform-specific PC-style parport initialisation
0004  *
0005  * Copyright (C) 1999, 2000  Tim Waugh <tim@cyberelk.demon.co.uk>
0006  *
0007  * This file should only be included by drivers/parport/parport_pc.c.
0008  */
0009
0010 #ifndef _ASM_POWERPC_PARPORT_H
0011 #define _ASM_POWERPC_PARPORT_H
0012 #ifdef __KERNEL__
0013
0014 #include <linux/of_irq.h>
0015
0016 static int parport_pc_find_nonpci_ports (int autoirq, int autodma)
0017 {
0018     struct device_node *np;
0019     const u32 *prop;
0020     u32 io1, io2;
0021     int propsize;
0022     int count = 0;
0023     int virq;
0024
0025     for_each_compatible_node(np, "parallel", "pnpPNP,400") {
0026         prop = of_get_property(np, "reg", &propsize);
0027         if (!prop || propsize > 6*sizeof(u32))
0028             continue;
0029         io1 = prop[1]; io2 = prop[2];
0030
0031         virq = irq_of_parse_and_map(np, 0);
0032         if (!virq)
0033             continue;
0034
0035         if (parport_pc_probe_port(io1, io2, virq, autodma, NULL, 0)
0036                 != NULL)
0037             count++;
0038     }
0039     return count;
0040 }
0041
0042 #endif /* __KERNEL__ */
0043 #endif /* !(_ASM_POWERPC_PARPORT_H) */