linux/include/asm-powerpc/parport.h
David Brownell c15a3837d2 parport->dev driver model support
Currently a parport_driver can't get a handle on the device node for the
underlying parport (PNPACPI, PCI, etc).  That prevents correct placement of
sysfs child nodes, which can affect things like power management.

This patch adds a field to "struct parport" pointing to that device node, and
updates non-legacy port drivers to initialize that device pointer.  That field
replaces the analagous PCI-only support in parport_pc.

[akpm@linux-foundation.org: fix powerpc build]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:05 -07:00

40 lines
977 B
C

/*
* 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 __devinit parport_pc_find_nonpci_ports (int autoirq, int autodma)
{
struct device_node *np;
const u32 *prop;
u32 io1, io2;
int propsize;
int count = 0;
for (np = NULL; (np = of_find_compatible_node(np,
"parallel",
"pnpPNP,400")) != NULL;) {
prop = of_get_property(np, "reg", &propsize);
if (!prop || propsize > 6*sizeof(u32))
continue;
io1 = prop[1]; io2 = prop[2];
prop = of_get_property(np, "interrupts", NULL);
if (!prop)
continue;
if (parport_pc_probe_port(io1, io2, prop[0], autodma, NULL) != NULL)
count++;
}
return count;
}
#endif /* __KERNEL__ */
#endif /* !(_ASM_POWERPC_PARPORT_H) */