src/sys/dev/isa/lm_isa.c - diff

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version 1.1, 2000/02/25 02:17:44

version 1.2, 2000/03/09 04:19:03

Line 83 lm_isa_match(parent, match, aux)

struct isa_attach_args *ia = aux;

int iobase;

int rv;

u_int8_t cr;

/* Must supply an address */

if (ia->ia_iobase == ISACF_PORT_DEFAULT)

Line 95 lm_isa_match(parent, match, aux)

Line 94 lm_isa_match(parent, match, aux)

if (bus_space_map(iot, iobase, 8, 0, &ioh))

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);