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/* $OpenBSD: adm1024.c,v 1.12 2006/12/23 17:46:39 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 1024 registers */
#define ADM1024_V2_5 0x20
#define ADM1024_Vccp 0x21
#define ADM1024_Vcc 0x22
#define ADM1024_V5 0x23
#define ADM1024_V12 0x24
#define ADM1024_Vccp2 0x25
#define ADM1024_EXT_TEMP 0x26
#define ADM1024_INT_TEMP 0x27
#define ADM1024_FAN1 0x28
#define ADM1024_FAN2 0x29
#define ADM1024_STATUS2 0x42
#define ADM1024_FANC 0x47
#define ADM1024_STATUS2_EXT 0x40
#define ADM1024_COMPANY 0x3e /* contains 0x41 */
#define ADM1024_STEPPING 0x3f /* contains 0x2? */
#define ADM1024_CONFIG1 0x40
#define ADM1024_CONFIG1_START 0x01
#define ADM1024_CONFIG1_INTCLR 0x08
/* Sensors */
#define ADMLC_INT 0
#define ADMLC_EXT 1
#define ADMLC_V2_5 2
#define ADMLC_Vccp 3
#define ADMLC_Vcc 4
#define ADMLC_V5 5
#define ADMLC_V12 6
#define ADMLC_Vccp2 7
#define ADMLC_FAN1 8
#define ADMLC_FAN2 9
#define ADMLC_NUM_SENSORS 10
struct admlc_softc {
struct device sc_dev;
i2c_tag_t sc_tag;
i2c_addr_t sc_addr;
struct sensor sc_sensor[ADMLC_NUM_SENSORS];
struct sensordev sc_sensordev;
int sc_fan1mul;
int sc_fan2mul;
};
int admlc_match(struct device *, void *, void *);
void admlc_attach(struct device *, struct device *, void *);
void admlc_refresh(void *);
struct cfattach admlc_ca = {
sizeof(struct admlc_softc), admlc_match, admlc_attach
};
struct cfdriver admlc_cd = {
NULL, "admlc", DV_DULL
};
int
admlc_match(struct device *parent, void *match, void *aux)
{
struct i2c_attach_args *ia = aux;
if (strcmp(ia->ia_name, "adm1024") == 0)
return (1);
return (0);
}
void
admlc_attach(struct device *parent, struct device *self, void *aux)
{
struct admlc_softc *sc = (struct admlc_softc *)self;
struct i2c_attach_args *ia = aux;
u_int8_t cmd, data, data2;
int i;
sc->sc_tag = ia->ia_tag;
sc->sc_addr = ia->ia_addr;
iic_acquire_bus(sc->sc_tag, 0);
cmd = ADM1024_CONFIG1;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
iic_release_bus(sc->sc_tag, 0);
printf(": cannot get control register\n");
return;
}
data2 = data | ADM1024_CONFIG1_START;
data2 = data2 & ~ADM1024_CONFIG1_INTCLR;
if (data != data2) {
if (iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data2, sizeof data2, 0)) {
iic_release_bus(sc->sc_tag, 0);
printf(": cannot set control register\n");
return;
}
}
cmd = ADM1024_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_fan1mul = (1 << (data >> 4) & 0x3);
sc->sc_fan2mul = (1 << (data >> 6) & 0x3);
iic_release_bus(sc->sc_tag, 0);
/* Initialize sensor data. */
strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
sizeof(sc->sc_sensordev.xname));
sc->sc_sensor[ADMLC_INT].type = SENSOR_TEMP;
strlcpy(sc->sc_sensor[ADMLC_INT].desc, "Internal",
sizeof(sc->sc_sensor[ADMLC_INT].desc));
sc->sc_sensor[ADMLC_EXT].type = SENSOR_TEMP;
strlcpy(sc->sc_sensor[ADMLC_EXT].desc, "External",
sizeof(sc->sc_sensor[ADMLC_EXT].desc));
sc->sc_sensor[ADMLC_V2_5].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[ADMLC_V2_5].desc, "2.5 V",
sizeof(sc->sc_sensor[ADMLC_V2_5].desc));
sc->sc_sensor[ADMLC_Vccp].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[ADMLC_Vccp].desc, "Vccp",
sizeof(sc->sc_sensor[ADMLC_Vccp].desc));
sc->sc_sensor[ADMLC_Vcc].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[ADMLC_Vcc].desc, "Vcc",
sizeof(sc->sc_sensor[ADMLC_Vcc].desc));
sc->sc_sensor[ADMLC_V5].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[ADMLC_V5].desc, "5 V",
sizeof(sc->sc_sensor[ADMLC_V5].desc));
sc->sc_sensor[ADMLC_V12].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[ADMLC_V12].desc, "12 V",
sizeof(sc->sc_sensor[ADMLC_V12].desc));
sc->sc_sensor[ADMLC_Vccp2].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[ADMLC_Vccp2].desc, "Vccp2",
sizeof(sc->sc_sensor[ADMLC_Vccp2].desc));
sc->sc_sensor[ADMLC_FAN1].type = SENSOR_FANRPM;
sc->sc_sensor[ADMLC_FAN2].type = SENSOR_FANRPM;
if (sensor_task_register(sc, admlc_refresh, 5)) {
printf(", unable to register update task\n");
return;
}
for (i = 0; i < ADMLC_NUM_SENSORS; i++)
sensor_attach(&sc->sc_sensordev, &sc->sc_sensor[i]);
sensordev_install(&sc->sc_sensordev);
printf("\n");
}
static void
fanval(struct sensor *sens, int mul, u_int8_t data)
{
int tmp = data * mul;
if (tmp == 0)
sens->flags |= SENSOR_FINVALID;
else
sens->value = 1350000 / tmp;
}
void
admlc_refresh(void *arg)
{
struct admlc_softc *sc = arg;
u_int8_t cmd, data;
int8_t sdata;
iic_acquire_bus(sc->sc_tag, 0);
cmd = ADM1024_INT_TEMP;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &sdata, sizeof sdata, 0) == 0)
sc->sc_sensor[ADMLC_INT].value = 273150000 + 1000000 * sdata;
cmd = ADM1024_EXT_TEMP;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &sdata, sizeof sdata, 0) == 0)
sc->sc_sensor[ADMLC_EXT].value = 273150000 + 1000000 * sdata;
cmd = ADM1024_STATUS2;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0) {
if (data & ADM1024_STATUS2_EXT)
sc->sc_sensor[ADMLC_EXT].flags |= SENSOR_FINVALID;
else
sc->sc_sensor[ADMLC_EXT].flags &= ~SENSOR_FINVALID;
}
cmd = ADM1024_V2_5;
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[ADMLC_V2_5].value = 2500000 * data / 192;
cmd = ADM1024_Vccp;
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[ADMLC_Vcc].value = 2249000 * data / 192;
cmd = ADM1024_Vcc;
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[ADMLC_Vcc].value = 3300000 * data / 192;
cmd = ADM1024_V5;
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[ADMLC_V5].value = 5000000 * data / 192;
cmd = ADM1024_V12;
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[ADMLC_V12].value = 12000000 * data / 192;
cmd = ADM1024_Vccp2;
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[ADMLC_Vccp2].value = 2700000 * data / 192;
cmd = ADM1024_FAN1;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
fanval(&sc->sc_sensor[ADMLC_FAN1], sc->sc_fan1mul, data);
cmd = ADM1024_FAN2;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
fanval(&sc->sc_sensor[ADMLC_FAN2], sc->sc_fan2mul, data);
iic_release_bus(sc->sc_tag, 0);
}
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