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add LPT support

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This commit is contained in:
Li-Ta Lo 2000-12-07 07:34:40 +00:00
commit cd92ec8ef9
1 changed files with 27 additions and 7 deletions
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34
src/superio/sis/950/superio.c
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@ -10,7 +10,7 @@ static char rcsid[] = "$Id$";
#include <cpu/p5/io.h>
void
enter_pnp()
enter_pnp(void)
{
// unlock it XXX make this a subr at some point
outb(0x87, 0x2e);
@ -20,7 +20,7 @@ enter_pnp()
}
void
exit_pnp()
exit_pnp(void)
{
/* all done. */
// select configure control
@ -29,8 +29,8 @@ exit_pnp()
}
#ifdef MUST_ENABLE_FLOPPY
void enable_floppy()
void
enable_floppy(void)
{
/* now set the LDN to floppy LDN */
outb(0x7, 0x2e); /* pick reg. 7 */
@ -48,7 +48,7 @@ enable_com(int com)
unsigned char b;
/* now set the LDN to com LDN */
outb(0x7, 0x2e); /* pick reg. 7 */
outb(com, 0x2f); /* LDN 0 to reg. 7 */
outb(com, 0x2f); /* LDN 1,2 to reg. 7 */
/* now select register 0x30, and set bit 1 in that register */
outb(0x30, 0x2e);
@ -61,15 +61,35 @@ enable_com(int com)
outb(b, 0x2f);
}
#ifdef MUST_ENABLE_LPT
void
final_superio_fixup()
enable_lpt(void)
{
/* now set the LDN to floppy LDN */
outb(0x7, 0x2e); /* pick reg. 7 */
outb(0x3, 0x2f); /* LDN 3 to reg. 7 */
/* now select register 0x30, and set bit 1 in that register */
outb(0x30, 0x2e);
outb(0x1, 0x2f);
}
#endif /* MUST_ENABLE_LPT */
void
final_superio_fixup(void)
{
enter_pnp();
#ifdef MUST_ENABLE_FLOPPY
enable_floppy();
#endif
#endif /* MUST_ENABLE_LPT */
enable_com(PNP_COM1_DEVICE);
enable_com(PNP_COM2_DEVICE);
#ifdef MUST_ENABLE_LPT
enable_lpt();
#endif /* MUST_ENABLE_LPT */
exit_pnp();
}