android_kernel_xiaomi_sm8350/include/asm-powerpc/parport.h
Michael Neuling 193cac99f6 [PATCH] powerpc: parallel port init fix
This stops parport from accessing nonexistent parallel ports.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-11 14:49:24 +11:00

45 lines
1.2 KiB
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>
extern struct parport *parport_pc_probe_port (unsigned long int base,
unsigned long int base_hi,
int irq, int dma,
struct pci_dev *dev);
static int __devinit parport_pc_find_nonpci_ports (int autoirq, int autodma)
{
struct device_node *np;
u32 *prop;
u32 io1, io2;
int propsize;
int count = 0;
for (np = NULL; (np = of_find_compatible_node(np,
"parallel",
"pnpPNP,400")) != NULL;) {
prop = (u32 *)get_property(np, "reg", &propsize);
if (!prop || propsize > 6*sizeof(u32))
continue;
io1 = prop[1]; io2 = prop[2];
prop = (u32 *)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) */