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support MAX6642 - yet another adm1021 kinda-sorta clone

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This commit is contained in:
macallan 2017-09-01 20:11:59 +00:00
parent 83a9b38a52
commit 3c8b989b82
1 changed files with 28 additions and 10 deletions
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38
sys/dev/i2c/adm1021.c
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@ -1,4 +1,4 @@
/* $NetBSD: adm1021.c,v 1.12 2016/01/04 19:24:15 christos Exp $ */
/* $NetBSD: adm1021.c,v 1.13 2017/09/01 20:11:59 macallan Exp $ */
/* $OpenBSD: adm1021.c,v 1.27 2007/06/24 05:34:35 dlg Exp $ */
/*
@ -20,15 +20,15 @@
/*
* Driver for ADM1021 and compatible temperature sensors, including ADM1021,
* ADM1021A, ADM1023, ADM1032, GL523SM, G781, LM84, MAX1617, MAX1617A,
* NE1617A, and Xeon embedded temperature sensors.
* NE1617A, MAX6642 and Xeon embedded temperature sensors.
*
* Some sensors differ from the ADM1021/MAX1617/NE1617A:
* ADM1021A ADM1023 ADM1032 G781 LM84 MAX1617A
* company/revision reg X X X X X
* no negative temps X X X X
* 11-bit remote temp X X X
* ADM1021A ADM1023 ADM1032 G781 LM84 MAX1617A MAX6642
* company/revision reg X X X X X X
* no negative temps X X X X
* 11-bit remote temp X X X X
* no low limits X
* therm (high) limits X X
* therm (high) limits X X X
*
* Registers 0x00 to 0x0f have separate read/write addresses, but
* registers 0x10 and above have the same read/write address.
@ -38,7 +38,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: adm1021.c,v 1.12 2016/01/04 19:24:15 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: adm1021.c,v 1.13 2017/09/01 20:11:59 macallan Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -145,6 +145,7 @@ CFATTACH_DECL_NEW(admtemp, sizeof(struct admtemp_softc),
/* XXX: add flags for compats to admtemp_setflags() */
static const char * admtemp_compats[] = {
"i2c-max1617",
"max6642",
NULL
};
@ -160,7 +161,7 @@ admtemp_match(device_t parent, cfdata_t match, void *aux)
*/
if (((ia->ia_addr >= 0x18) && (ia->ia_addr <= 0x1a)) ||
((ia->ia_addr >= 0x29) && (ia->ia_addr <= 0x2b)) ||
((ia->ia_addr >= 0x4c) && (ia->ia_addr <= 0x4e)))
((ia->ia_addr >= 0x48) && (ia->ia_addr <= 0x4e)))
return (1);
} else {
/*
@ -233,6 +234,11 @@ admtemp_setflags(struct admtemp_softc *sc, struct i2c_attach_args *ia,
strlcpy(name, "MAX1617A", ADMTEMP_NAMELEN);
return;
}
if (strcmp("max6642", ia->ia_compat[i]) == 0) {
sc->sc_noneg = 0;
strlcpy(name, "MAX6642", ADMTEMP_NAMELEN);
return;
}
}
/* Indirect config */
@ -249,7 +255,19 @@ admtemp_setflags(struct admtemp_softc *sc, struct i2c_attach_args *ia,
if (*comp == ADM1021_COMPANY_MAXIM) {
sc->sc_noneg = 0;
strlcpy(name, "MAX1617A", ADMTEMP_NAMELEN);
/*
* MAX6642 doesn't have a revision register
* XXX this works only on macppc with iic at pmu because the
* pmu doesn't return an error for nonexistant registers, it
* just repeats previous data
*/
if (*comp == *rev) {
sc->sc_therm = 0; /* */
sc->sc_ext11 = 1;
strlcpy(name, "MAX6642", ADMTEMP_NAMELEN);
} else {
strlcpy(name, "MAX1617A", ADMTEMP_NAMELEN);
}
}
if (*comp == ADM1021_COMPANY_GMT) {