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/* $OpenBSD: adm1030.c,v 1.9 2008/05/01 23:02:05 deraadt Exp $ */
/*
* Copyright (c) 2005 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>
/* adm 1030 registers */
#define ADM1030_INT_TEMP 0x0a
#define ADM1030_EXT_TEMP 0x0b
#define ADM1030_FAN 0x08
#define ADM1030_FANC 0x20
#define ADM1024_FANC_VAL(x) (x >> 6)
/* Sensors */
#define ADMTMP_INT 0
#define ADMTMP_EXT 1
#define ADMTMP_FAN 2
#define ADMTMP_NUM_SENSORS 3
struct admtmp_softc {
struct device sc_dev;
i2c_tag_t sc_tag;
i2c_addr_t sc_addr;
int sc_fanmul;
struct ksensor sc_sensor[ADMTMP_NUM_SENSORS];
struct ksensordev sc_sensordev;
};
int admtmp_match(struct device *, void *, void *);
void admtmp_attach(struct device *, struct device *, void *);
void admtmp_refresh(void *);
struct cfattach admtmp_ca = {
sizeof(struct admtmp_softc), admtmp_match, admtmp_attach
};
struct cfdriver admtmp_cd = {
NULL, "admtmp", DV_DULL
};
int
admtmp_match(struct device *parent, void *match, void *aux)
{
struct i2c_attach_args *ia = aux;
if (strcmp(ia->ia_name, "adm1030") == 0)
return (1);
return (0);
}
void
admtmp_attach(struct device *parent, struct device *self, void *aux)
{
struct admtmp_softc *sc = (struct admtmp_softc *)self;
struct i2c_attach_args *ia = aux;
u_int8_t cmd, data;
int i;
sc->sc_tag = ia->ia_tag;
sc->sc_addr = ia->ia_addr;
cmd = ADM1030_FANC;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
printf(": unable to read fan setting\n");
return;
}
sc->sc_fanmul = 11250/8 * (1 << ADM1024_FANC_VAL(data)) * 60;
/* Initialize sensor data. */
strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
sizeof(sc->sc_sensordev.xname));
sc->sc_sensor[ADMTMP_INT].type = SENSOR_TEMP;
strlcpy(sc->sc_sensor[ADMTMP_INT].desc, "Internal",
sizeof(sc->sc_sensor[ADMTMP_INT].desc));
sc->sc_sensor[ADMTMP_EXT].type = SENSOR_TEMP;
strlcpy(sc->sc_sensor[ADMTMP_EXT].desc, "External",
sizeof(sc->sc_sensor[ADMTMP_EXT].desc));
sc->sc_sensor[ADMTMP_FAN].type = SENSOR_FANRPM;
if (sensor_task_register(sc, admtmp_refresh, 5) == NULL) {
printf(": unable to register update task\n");
return;
}
for (i = 0; i < ADMTMP_NUM_SENSORS; i++)
sensor_attach(&sc->sc_sensordev, &sc->sc_sensor[i]);
sensordev_install(&sc->sc_sensordev);
printf("\n");
}
void
admtmp_refresh(void *arg)
{
struct admtmp_softc *sc = arg;
u_int8_t cmd, data;
iic_acquire_bus(sc->sc_tag, 0);
cmd = ADM1030_INT_TEMP;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
sc->sc_sensor[ADMTMP_INT].value = 273150000 + 1000000 * data;
cmd = ADM1030_EXT_TEMP;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
sc->sc_sensor[ADMTMP_EXT].value = 273150000 + 1000000 * data;
cmd = ADM1030_FAN;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0) {
if (data == 0)
sc->sc_sensor[ADMTMP_FAN].flags |= SENSOR_FINVALID;
else {
sc->sc_sensor[ADMTMP_FAN].value =
sc->sc_fanmul / (2 * (int)data);
sc->sc_sensor[ADMTMP_FAN].flags &= ~SENSOR_FINVALID;
}
}
iic_release_bus(sc->sc_tag, 0);
}
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