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/* $OpenBSD: asc7611.c,v 1.1 2008/03/23 07:04:48 cnst Exp $ */
/*
* Copyright (c) 2008 Constantine A. Murenin <cnst+openbsd@bugmail.mojo.ru>
*
* 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>
/*
* Andigilog aSC7611
* Hardware Monitor with Integrated Fan Control
* http://www.andigilog.com/downloads/aSC7611_70A05007.pdf
* October 2006
*/
/* Temperature */
#define ANDL_NUM_TEMPS 3
static const struct {
const char *name;
const uint8_t mreg;
const uint8_t lreg;
} andl_temp[ANDL_NUM_TEMPS] = {
{ "External", 0x25, 0x10 },
{ "Internal", 0x26, 0x15 },
{ "External", 0x27, 0x0e }
};
/* Voltage */
#define ANDL_NUM_VOLTS 5
static const struct {
const char *name;
const short nominal;
const uint8_t mreg;
} andl_volt[ANDL_NUM_VOLTS] = {
{ "+2.5V", 2500, 0x20 },
{ "Vccp", 2250, 0x21 },
{ "+3.3V", 3300, 0x22 },
{ "+5V", 5000, 0x23 },
{ "+12V", 12000, 0x24 }
};
/* Fan */
#define ANDL_NUM_TACHS 4
#define ANDL_TACH_START 0x28
#define ANDL_NUM_TOTAL (ANDL_NUM_TEMPS + ANDL_NUM_VOLTS + ANDL_NUM_TACHS)
struct andl_softc {
struct device sc_dev;
i2c_tag_t sc_tag;
i2c_addr_t sc_addr;
struct ksensor sc_sensors[ANDL_NUM_TOTAL];
struct ksensordev sc_sensordev;
};
int andl_match(struct device *, void *, void *);
void andl_attach(struct device *, struct device *, void *);
void andl_refresh(void *);
int andl_refresh_temps(struct andl_softc *, struct ksensor *);
int andl_refresh_volts(struct andl_softc *, struct ksensor *);
int andl_refresh_tachs(struct andl_softc *, struct ksensor *);
uint8_t andl_readreg(struct andl_softc *, uint8_t);
void andl_writereg(struct andl_softc *, uint8_t, uint8_t);
struct cfattach andl_ca = {
sizeof(struct andl_softc), andl_match, andl_attach
};
struct cfdriver andl_cd = {
NULL, "andl", DV_DULL
};
int
andl_match(struct device *parent, void *match, void *aux)
{
struct i2c_attach_args *ia = aux;
if (strcmp(ia->ia_name, "asc7611") == 0)
return 1;
return 0;
}
void
andl_attach(struct device *parent, struct device *self, void *aux)
{
struct andl_softc *sc = (struct andl_softc *)self;
struct i2c_attach_args *ia = aux;
int i, j;
sc->sc_tag = ia->ia_tag;
sc->sc_addr = ia->ia_addr;
printf(": %s", ia->ia_name);
strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
sizeof(sc->sc_sensordev.xname));
for (i = 0; i < ANDL_NUM_TEMPS; i++) {
strlcpy(sc->sc_sensors[i].desc, andl_temp[i].name,
sizeof(sc->sc_sensors[i].desc));
sc->sc_sensors[i].type = SENSOR_TEMP;
}
for (j = i; i < j + ANDL_NUM_VOLTS; i++) {
strlcpy(sc->sc_sensors[i].desc, andl_volt[i - j].name,
sizeof(sc->sc_sensors[i].desc));
sc->sc_sensors[i].type = SENSOR_VOLTS_DC;
}
for (j = i + ANDL_NUM_TACHS; i < j; i++)
sc->sc_sensors[i].type = SENSOR_FANRPM;
for (i = 0; i < j; i++)
sensor_attach(&sc->sc_sensordev, &sc->sc_sensors[i]);
if (sensor_task_register(sc, andl_refresh, 5) == NULL) {
printf(", unable to register the update task\n");
return;
}
sensordev_install(&sc->sc_sensordev);
printf("\n");
}
void
andl_refresh(void *arg)
{
struct andl_softc *sc = arg;
struct ksensor *s = sc->sc_sensors;
iic_acquire_bus(sc->sc_tag, 0);
s += andl_refresh_temps(sc, s);
s += andl_refresh_volts(sc, s);
s += andl_refresh_tachs(sc, s);
iic_release_bus(sc->sc_tag, 0);
}
int
andl_refresh_temps(struct andl_softc *sc, struct ksensor *s)
{
int i;
for (i = 0; i < ANDL_NUM_TEMPS; i++) {
uint8_t m = andl_readreg(sc, andl_temp[i].mreg);
uint8_t l = andl_readreg(sc, andl_temp[i].lreg);
int32_t t = (m << 8 | l) >> (16 - 10);
if (t & 0x200)
t -= 0x400;
t *= 250;
if (t < -55000 || t > 125000) {
s[i].flags |= SENSOR_FINVALID;
s[i].value = 0;
} else {
s[i].value = t * 1000 + 273150000;
s[i].flags &= ~SENSOR_FINVALID;
}
}
return i;
}
int
andl_refresh_volts(struct andl_softc *sc, struct ksensor *s)
{
int i;
for (i = 0; i < ANDL_NUM_VOLTS; i++)
s[i].value = 1000ll * andl_readreg(sc, andl_volt[i].mreg) *
andl_volt[i].nominal / 0xc0;
return i;
}
int
andl_refresh_tachs(struct andl_softc *sc, struct ksensor *s)
{
int i;
for (i = 0; i < ANDL_NUM_TACHS; i++) {
uint8_t l = andl_readreg(sc, ANDL_TACH_START + i * 2);
uint8_t m = andl_readreg(sc, ANDL_TACH_START + i * 2 + 1);
uint16_t b = m << 8 | l;
if (b >= 0xfffc || b == 0) {
s[i].flags |= SENSOR_FINVALID;
s[i].value = 0;
} else {
s[i].value = (90000 * 60) / b;
s[i].flags &= ~SENSOR_FINVALID;
}
}
return i;
}
uint8_t
andl_readreg(struct andl_softc *sc, uint8_t reg)
{
uint8_t data;
iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, ®, sizeof reg, &data, sizeof data, 0);
return data;
}
void
andl_writereg(struct andl_softc *sc, uint8_t reg, uint8_t data)
{
iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP,
sc->sc_addr, ®, sizeof reg, &data, sizeof data, 0);
}
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