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use bus independent probe

This commit is contained in:
groo 2000-03-09 04:19:03 +00:00
parent bee07ea181
commit 7e6d7b8613
1 changed files with 3 additions and 18 deletions
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21
sys/dev/isa/lm_isa.c
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@ -1,4 +1,4 @@
/* $NetBSD: lm_isa.c,v 1.1 2000/02/25 02:17:44 groo Exp $ */ /* $NetBSD: lm_isa.c,v 1.2 2000/03/09 04:19:03 groo Exp $ */
/*- /*-
* Copyright (c) 2000 The NetBSD Foundation, Inc. * Copyright (c) 2000 The NetBSD Foundation, Inc.
@ -83,7 +83,6 @@ lm_isa_match(parent, match, aux)
struct isa_attach_args *ia = aux; struct isa_attach_args *ia = aux;
int iobase; int iobase;
int rv; int rv;
u_int8_t cr;
/* Must supply an address */ /* Must supply an address */
if (ia->ia_iobase == ISACF_PORT_DEFAULT) if (ia->ia_iobase == ISACF_PORT_DEFAULT)
@ -95,23 +94,9 @@ lm_isa_match(parent, match, aux)
if (bus_space_map(iot, iobase, 8, 0, &ioh)) if (bus_space_map(iot, iobase, 8, 0, &ioh))
return (0); return (0);
/* Check for some power-on defaults */
bus_space_write_1(iot, ioh, LMC_ADDR, LMD_CONFIG);
/* Perform LM78 reset */ /* Bus independent probe */
bus_space_write_1(iot, ioh, LMC_DATA, 0x80); rv = lm_probe(iot, ioh);
/* XXX - Why do I have to reselect the register? */
bus_space_write_1(iot, ioh, LMC_ADDR, LMD_CONFIG);
cr = bus_space_read_1(iot, ioh, LMC_DATA);
/* XXX - spec says *only* 0x08! */
if ((cr == 0x08) || (cr == 0x01))
rv = 1;
else
rv = 0;
DPRINTF(("lm: rv = %d, cr = %x\n", rv, cr));
bus_space_unmap(iot, ioh, 8); bus_space_unmap(iot, ioh, 8);