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/* $OpenBSD: adt7462.c,v 1.6 2008/04/23 11:11:14 deraadt Exp $ */
/*
* Copyright (c) 2008 Theo de Raadt
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/sensors.h>
#include <dev/i2c/i2cvar.h>
#define ADT7462_TEMPL 0x88
#define ADT7462_TEMPH 0x89
#define ADT7462_TEMP1L 0x8a
#define ADT7462_TEMP1H 0x8b
#define ADT7462_TEMP2L 0x8c
#define ADT7462_TEMP2H 0x8d
#define ADT7462_TEMP3L 0x8e
#define ADT7462_TEMP3H 0x8f
#define ADT7262_TACH1L 0x98
#define ADT7262_TACH1H 0x99
#define ADT7262_TACH2L 0x9a
#define ADT7262_TACH2H 0x9b
#define ADT7262_TACH3L 0x9c
#define ADT7262_TACH3H 0x9d
#define ADT7262_TACH4L 0x9e
#define ADT7262_TACH4H 0x9f
#define ADT7262_TACH5L 0xa2
#define ADT7262_TACH5H 0xa3
#define ADT7262_TACH6L 0xa4
#define ADT7262_TACH6H 0xa5
#define ADT7262_TACH7L 0xa6
#define ADT7262_TACH7H 0xa7
#define ADT7262_TACH8L 0xa8
#define ADT7262_TACH8H 0xa9
/* Sensors */
#define ADTFSM_TEMP0 0
#define ADTFSM_TEMP1 1
#define ADTFSM_TEMP2 2
#define ADTFSM_TEMP3 3
#define ADTFSM_TACH1 4
#define ADTFSM_TACH2 5
#define ADTFSM_TACH3 6
#define ADTFSM_TACH4 7
#define ADTFSM_TACH5 8
#define ADTFSM_TACH6 9
#define ADTFSM_TACH7 10
#define ADTFSM_TACH8 11
#define ADTFSM_NUM_SENSORS 12
struct adtfsm_softc {
struct device sc_dev;
i2c_tag_t sc_tag;
i2c_addr_t sc_addr;
int sc_fanmul;
struct ksensor sc_sensor[ADTFSM_NUM_SENSORS];
struct ksensordev sc_sensordev;
};
int adtfsm_match(struct device *, void *, void *);
void adtfsm_attach(struct device *, struct device *, void *);
void adtfsm_refresh(void *);
struct cfattach adtfsm_ca = {
sizeof(struct adtfsm_softc), adtfsm_match, adtfsm_attach
};
struct cfdriver adtfsm_cd = {
NULL, "adtfsm", DV_DULL
};
int
adtfsm_match(struct device *parent, void *match, void *aux)
{
struct i2c_attach_args *ia = aux;
if (strcmp(ia->ia_name, "adt7462") == 0)
return (1);
return (0);
}
void
adtfsm_attach(struct device *parent, struct device *self, void *aux)
{
struct adtfsm_softc *sc = (struct adtfsm_softc *)self;
struct i2c_attach_args *ia = aux;
int i;
sc->sc_tag = ia->ia_tag;
sc->sc_addr = ia->ia_addr;
/* Initialize sensor data. */
strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
sizeof(sc->sc_sensordev.xname));
for (i = ADTFSM_TEMP0; i <= ADTFSM_TEMP3; i++) {
sc->sc_sensor[i].type = SENSOR_TEMP;
sc->sc_sensor[i].flags |= SENSOR_FINVALID;
}
strlcpy(sc->sc_sensor[0].desc, "Internal",
sizeof(sc->sc_sensor[0].desc));
for (i = 1; i < 4; i++)
strlcpy(sc->sc_sensor[i].desc, "External",
sizeof(sc->sc_sensor[i].desc));
for (i = ADTFSM_TACH1; i <= ADTFSM_TACH8; i++) {
sc->sc_sensor[i].type = SENSOR_FANRPM;
sc->sc_sensor[i].flags |= SENSOR_FINVALID;
}
if (sensor_task_register(sc, adtfsm_refresh, 5) == NULL) {
printf(", unable to register update task\n");
return;
}
for (i = 0; i < ADTFSM_NUM_SENSORS; i++)
sensor_attach(&sc->sc_sensordev, &sc->sc_sensor[i]);
sensordev_install(&sc->sc_sensordev);
printf("\n");
}
void
adtfsm_refresh(void *arg)
{
struct adtfsm_softc *sc = arg;
u_int8_t cmdh, cmdl, datah = 0x01, datal = 0x02;
struct ksensor *ks;
u_short ut;
short t;
int i;
iic_acquire_bus(sc->sc_tag, 0);
for (i = 0; i <= ADTFSM_TEMP3 - ADTFSM_TEMP0; i++) {
cmdl = ADT7462_TEMPL + i * 2;
cmdh = ADT7462_TEMPH + i * 2;
ks = &sc->sc_sensor[ADTFSM_TEMP0 + i];
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmdl, sizeof cmdl, &datal,
sizeof datal, 0) == 0 &&
iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmdh, sizeof cmdh, &datah,
sizeof datah, 0) == 0) {
t = (((datah << 8) | datal) >> 6) - (64 << 2);
ks->value = 273150000 + t * 250000;
ks->flags &= ~SENSOR_FINVALID;
} else
ks->flags |= SENSOR_FINVALID;
}
for (i = 0; i <= ADTFSM_TACH8 - ADTFSM_TACH1; i++) {
cmdl = ADT7262_TACH1L + i * 2;
cmdh = ADT7262_TACH1H + i * 2;
ks = &sc->sc_sensor[ADTFSM_TACH1 + i];
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmdl, sizeof cmdl, &datal,
sizeof datal, 0) == 0 &&
iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmdh, sizeof cmdh, &datah,
sizeof datah, 0) == 0) {
ut = ((datah << 8) | datal);
if (ut == 0x0000 || ut == 0xffff)
ks->flags |= SENSOR_FINVALID;
else {
ks->value = 90000 * 60 / ut;
ks->flags &= ~SENSOR_FINVALID;
}
} else
ks->flags |= SENSOR_FINVALID;
}
iic_release_bus(sc->sc_tag, 0);
}
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