diff options
| -rw-r--r-- | sys/dev/i2c/adm1021.c | 130 | ||||
| -rw-r--r-- | sys/dev/i2c/files.i2c | 7 |
2 files changed, 136 insertions, 1 deletions
diff --git a/sys/dev/i2c/adm1021.c b/sys/dev/i2c/adm1021.c new file mode 100644 index 00000000000..9e08292431f --- /dev/null +++ b/sys/dev/i2c/adm1021.c @@ -0,0 +1,130 @@ +/* $OpenBSD: adm1021.c,v 1.1 2005/12/22 23:44:12 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 1021 registers */ +#define ADM1021_INT_TEMP 0x00 +#define ADM1021_EXT_TEMP 0x01 +#define ADM1021_STATUS 0x02 + +#define ADM1021_COMPANY 0xfe /* contains 0x41 */ +#define ADM1021_STEPPING 0xff /* contains 0x3? */ + +/* Sensors */ +#define ADMTEMP_INT 0 +#define ADMTEMP_EXT 1 +#define ADMTEMP_NUM_SENSORS 2 + +struct admtemp_softc { + struct device sc_dev; + i2c_tag_t sc_tag; + i2c_addr_t sc_addr; + + struct sensor sc_sensor[ADMTEMP_NUM_SENSORS]; +}; + +int admtemp_match(struct device *, void *, void *); +void admtemp_attach(struct device *, struct device *, void *); +void admtemp_refresh(void *); + +struct cfattach admtemp_ca = { + sizeof(struct admtemp_softc), admtemp_match, admtemp_attach +}; + +struct cfdriver admtemp_cd = { + NULL, "admtemp", DV_DULL +}; + +int +admtemp_match(struct device *parent, void *match, void *aux) +{ + struct i2c_attach_args *ia = aux; + + if (strcmp(ia->ia_name, "adm1021") == 0) { + /* + * should also ensure that + * config & 0x80 == 0x00 + * status1 & 0xc0 == 0x00 + * status2 & 0xbc == 0x00 + * before accepting this to be for real + */ + return (1); + } + return (1); +} + +void +admtemp_attach(struct device *parent, struct device *self, void *aux) +{ + struct admtemp_softc *sc = (struct admtemp_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. */ + for (i = 0; i < ADMTEMP_NUM_SENSORS; i++) + strlcpy(sc->sc_sensor[i].device, sc->sc_dev.dv_xname, + sizeof(sc->sc_sensor[i].device)); + + sc->sc_sensor[ADMTEMP_INT].type = SENSOR_TEMP; + strlcpy(sc->sc_sensor[ADMTEMP_INT].desc, "Internal", + sizeof(sc->sc_sensor[ADMTEMP_INT].desc)); + + sc->sc_sensor[ADMTEMP_EXT].type = SENSOR_TEMP; + strlcpy(sc->sc_sensor[ADMTEMP_EXT].desc, "External", + sizeof(sc->sc_sensor[ADMTEMP_EXT].desc)); + + if (sensor_task_register(sc, admtemp_refresh, 5)) { + printf(", unable to register update task\n"); + return; + } + + for (i = 0; i < ADMTEMP_NUM_SENSORS; i++) + SENSOR_ADD(&sc->sc_sensor[i]); + + printf("\n"); +} + +void +admtemp_refresh(void *arg) +{ + struct admtemp_softc *sc = arg; + u_int8_t cmd, data; + + iic_acquire_bus(sc->sc_tag, 0); + + cmd = ADM1021_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[ADMTEMP_INT].value = 273150000 + 1000000 * data; + + cmd = ADM1021_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[ADMTEMP_EXT].value = 273150000 + 1000000 * data; + + iic_release_bus(sc->sc_tag, 0); +} diff --git a/sys/dev/i2c/files.i2c b/sys/dev/i2c/files.i2c index 1f2d9a8c2b7..9512f252d8f 100644 --- a/sys/dev/i2c/files.i2c +++ b/sys/dev/i2c/files.i2c @@ -1,4 +1,4 @@ -# $OpenBSD: files.i2c,v 1.17 2005/12/22 22:57:27 deraadt Exp $ +# $OpenBSD: files.i2c,v 1.18 2005/12/22 23:44:12 deraadt Exp $ # $NetBSD: files.i2c,v 1.3 2003/10/20 16:24:10 briggs Exp $ define i2c {[addr = -1], [size = -1]} @@ -40,6 +40,11 @@ device tsl attach tsl at i2c file dev/i2c/tsl2560.c tsl +# ADM1021 +device admtemp +attach admtemp at i2c +file dev/i2c/adm1021.c admtemp + # ADM1025 device admtm attach admtm at i2c |