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/* $OpenBSD: adm1025.c,v 1.7 2005/12/23 15:06:32 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 1025 registers */
#define ADM1025_V25 0x20
#define ADM1025_Vccp 0x21
#define ADM1025_V33 0x22
#define ADM1025_V5 0x23
#define ADM1025_V12 0x24
#define ADM1025_Vcc 0x25
#define ADM1025_EXT_TEMP 0x26
#define ADM1025_INT_TEMP 0x27
#define ADM1025_STATUS2 0x42
#define ADM1025_STATUS2_EXT 0x40
#define ADM1025_COMPANY 0x3e /* contains 0x41 */
#define ADM1025_STEPPING 0x3f /* contains 0x2? */
#define ADM1025_CONFIG 0x40
/* Sensors */
#define ADMTM_INT 0
#define ADMTM_EXT 1
#define ADMTM_V25 2
#define ADMTM_Vccp 3
#define ADMTM_V33 4
#define ADMTM_V5 5
#define ADMTM_V12 6
#define ADMTM_Vcc 7
#define ADMTM_NUM_SENSORS 8
struct admtm_softc {
struct device sc_dev;
i2c_tag_t sc_tag;
i2c_addr_t sc_addr;
struct sensor sc_sensor[ADMTM_NUM_SENSORS];
};
int admtm_match(struct device *, void *, void *);
void admtm_attach(struct device *, struct device *, void *);
void admtm_refresh(void *);
struct cfattach admtm_ca = {
sizeof(struct admtm_softc), admtm_match, admtm_attach
};
struct cfdriver admtm_cd = {
NULL, "admtm", DV_DULL
};
int
admtm_match(struct device *parent, void *match, void *aux)
{
struct i2c_attach_args *ia = aux;
if (strcmp(ia->ia_name, "adm1025") == 0 ||
strcmp(ia->ia_name, "47m192") == 0 ||
strcmp(ia->ia_name, "ne1619") == 0) {
/*
* should also ensure that
* config & 0x80 == 0x00
* status1 & 0xc0 == 0x00
* status2 & 0xbc == 0x00
* before accepting this to be for real
*/
return (1);
}
return (0);
}
void
admtm_attach(struct device *parent, struct device *self, void *aux)
{
struct admtm_softc *sc = (struct admtm_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;
iic_acquire_bus(sc->sc_tag, 0);
cmd = ADM1025_CONFIG;
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 set control register\n");
return;
}
data |= 0x01;
if (iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
iic_release_bus(sc->sc_tag, 0);
printf(": cannot set control register\n");
return;
}
/* Initialize sensor data. */
for (i = 0; i < ADMTM_NUM_SENSORS; i++)
strlcpy(sc->sc_sensor[i].device, sc->sc_dev.dv_xname,
sizeof(sc->sc_sensor[i].device));
sc->sc_sensor[ADMTM_INT].type = SENSOR_TEMP;
strlcpy(sc->sc_sensor[ADMTM_INT].desc, "Internal",
sizeof(sc->sc_sensor[ADMTM_INT].desc));
sc->sc_sensor[ADMTM_EXT].type = SENSOR_TEMP;
strlcpy(sc->sc_sensor[ADMTM_EXT].desc, "External",
sizeof(sc->sc_sensor[ADMTM_EXT].desc));
sc->sc_sensor[ADMTM_V25].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[ADMTM_V25].desc, "2.5 V",
sizeof(sc->sc_sensor[ADMTM_V25].desc));
sc->sc_sensor[ADMTM_Vccp].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[ADMTM_Vccp].desc, "Vccp",
sizeof(sc->sc_sensor[ADMTM_Vccp].desc));
sc->sc_sensor[ADMTM_V33].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[ADMTM_V33].desc, "3.3 V",
sizeof(sc->sc_sensor[ADMTM_V33].desc));
sc->sc_sensor[ADMTM_V5].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[ADMTM_V5].desc, "5 V",
sizeof(sc->sc_sensor[ADMTM_V5].desc));
sc->sc_sensor[ADMTM_V12].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[ADMTM_V12].desc, "12 V",
sizeof(sc->sc_sensor[ADMTM_V12].desc));
sc->sc_sensor[ADMTM_Vcc].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[ADMTM_Vcc].desc, "Vcc",
sizeof(sc->sc_sensor[ADMTM_Vcc].desc));
if (sensor_task_register(sc, admtm_refresh, 5)) {
printf(", unable to register update task\n");
return;
}
for (i = 0; i < ADMTM_NUM_SENSORS; i++)
SENSOR_ADD(&sc->sc_sensor[i]);
printf("\n");
}
void
admtm_refresh(void *arg)
{
struct admtm_softc *sc = arg;
u_int8_t cmd, data;
iic_acquire_bus(sc->sc_tag, 0);
cmd = ADM1025_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[ADMTM_INT].value = 273150000 + 1000000 * data;
cmd = ADM1025_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[ADMTM_EXT].value = 273150000 + 1000000 * data;
cmd = ADM1025_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 & ADM1025_STATUS2_EXT)
sc->sc_sensor[ADMTM_EXT].flags |= SENSOR_FINVALID;
else
sc->sc_sensor[ADMTM_EXT].flags &= ~SENSOR_FINVALID;
}
cmd = ADM1025_V25;
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[ADMTM_V25].value = 2500000 * data / 192;
cmd = ADM1025_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[ADMTM_Vcc].value = + 2249000 * data / 192;
cmd = ADM1025_V33;
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[ADMTM_V33].value = 3300000 * data / 192;
cmd = ADM1025_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[ADMTM_V5].value = 5000000 * data / 192;
cmd = ADM1025_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[ADMTM_V12].value = 12000000 * data / 192;
cmd = ADM1025_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[ADMTM_Vcc].value = 3300000 * data / 192;
iic_release_bus(sc->sc_tag, 0);
}
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