parport_pc: detection for SuperIO IT87XX POST
Add detection for IT87XX SuperIO chip and disabling its POST feature, which made noise on parallel port's pins. Signed-off-by: Petr Cvek <petr.cvek@tul.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
a9000d037d
commit
f63fd7e299
1 changed files with 39 additions and 6 deletions
|
@ -1540,6 +1540,38 @@ static void __devinit detect_and_report_smsc (void)
|
|||
smsc_check(0x3f0,0x44);
|
||||
smsc_check(0x370,0x44);
|
||||
}
|
||||
|
||||
static void __devinit detect_and_report_it87(void)
|
||||
{
|
||||
u16 dev;
|
||||
u8 r;
|
||||
if (verbose_probing)
|
||||
printk(KERN_DEBUG "IT8705 Super-IO detection, now testing port 2E ...\n");
|
||||
if (!request_region(0x2e, 1, __FUNCTION__))
|
||||
return;
|
||||
outb(0x87, 0x2e);
|
||||
outb(0x01, 0x2e);
|
||||
outb(0x55, 0x2e);
|
||||
outb(0x55, 0x2e);
|
||||
outb(0x20, 0x2e);
|
||||
dev = inb(0x2f) << 8;
|
||||
outb(0x21, 0x2e);
|
||||
dev |= inb(0x2f);
|
||||
if (dev == 0x8712 || dev == 0x8705 || dev == 0x8715 ||
|
||||
dev == 0x8716 || dev == 0x8718 || dev == 0x8726) {
|
||||
printk(KERN_INFO "IT%04X SuperIO detected.\n", dev);
|
||||
outb(0x07, 0x2E); /* Parallel Port */
|
||||
outb(0x03, 0x2F);
|
||||
outb(0xF0, 0x2E); /* BOOT 0x80 off */
|
||||
r = inb(0x2f);
|
||||
outb(0xF0, 0x2E);
|
||||
outb(r | 8, 0x2F);
|
||||
outb(0x02, 0x2E); /* Lock */
|
||||
outb(0x02, 0x2F);
|
||||
|
||||
release_region(0x2e, 1);
|
||||
}
|
||||
}
|
||||
#endif /* CONFIG_PARPORT_PC_SUPERIO */
|
||||
|
||||
static int get_superio_dma (struct parport *p)
|
||||
|
@ -3164,24 +3196,25 @@ static void __init parport_pc_find_ports (int autoirq, int autodma)
|
|||
int count = 0, err;
|
||||
|
||||
#ifdef CONFIG_PARPORT_PC_SUPERIO
|
||||
detect_and_report_winbond ();
|
||||
detect_and_report_smsc ();
|
||||
detect_and_report_it87();
|
||||
detect_and_report_winbond();
|
||||
detect_and_report_smsc();
|
||||
#endif
|
||||
|
||||
/* Onboard SuperIO chipsets that show themselves on the PCI bus. */
|
||||
count += parport_pc_init_superio (autoirq, autodma);
|
||||
count += parport_pc_init_superio(autoirq, autodma);
|
||||
|
||||
/* PnP ports, skip detection if SuperIO already found them */
|
||||
if (!count) {
|
||||
err = pnp_register_driver (&parport_pc_pnp_driver);
|
||||
err = pnp_register_driver(&parport_pc_pnp_driver);
|
||||
if (!err)
|
||||
pnp_registered_parport = 1;
|
||||
}
|
||||
|
||||
/* ISA ports and whatever (see asm/parport.h). */
|
||||
parport_pc_find_nonpci_ports (autoirq, autodma);
|
||||
parport_pc_find_nonpci_ports(autoirq, autodma);
|
||||
|
||||
err = pci_register_driver (&parport_pc_pci_driver);
|
||||
err = pci_register_driver(&parport_pc_pci_driver);
|
||||
if (!err)
|
||||
pci_registered_parport = 1;
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue