Annotation of sys/dev/i2c/adm1030.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: adm1030.c,v 1.8 2007/06/24 05:34:35 dlg Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2005 Theo de Raadt
! 5: *
! 6: * Permission to use, copy, modify, and distribute this software for any
! 7: * purpose with or without fee is hereby granted, provided that the above
! 8: * copyright notice and this permission notice appear in all copies.
! 9: *
! 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
! 16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 17: */
! 18:
! 19: #include <sys/param.h>
! 20: #include <sys/systm.h>
! 21: #include <sys/device.h>
! 22: #include <sys/sensors.h>
! 23:
! 24: #include <dev/i2c/i2cvar.h>
! 25:
! 26: /* adm 1030 registers */
! 27: #define ADM1030_INT_TEMP 0x0a
! 28: #define ADM1030_EXT_TEMP 0x0b
! 29: #define ADM1030_FAN 0x08
! 30: #define ADM1030_FANC 0x20
! 31: #define ADM1024_FANC_VAL(x) (x >> 6)
! 32:
! 33: /* Sensors */
! 34: #define ADMTMP_INT 0
! 35: #define ADMTMP_EXT 1
! 36: #define ADMTMP_FAN 2
! 37: #define ADMTMP_NUM_SENSORS 3
! 38:
! 39: struct admtmp_softc {
! 40: struct device sc_dev;
! 41: i2c_tag_t sc_tag;
! 42: i2c_addr_t sc_addr;
! 43: int sc_fanmul;
! 44:
! 45: struct ksensor sc_sensor[ADMTMP_NUM_SENSORS];
! 46: struct ksensordev sc_sensordev;
! 47: };
! 48:
! 49: int admtmp_match(struct device *, void *, void *);
! 50: void admtmp_attach(struct device *, struct device *, void *);
! 51: void admtmp_refresh(void *);
! 52:
! 53: struct cfattach admtmp_ca = {
! 54: sizeof(struct admtmp_softc), admtmp_match, admtmp_attach
! 55: };
! 56:
! 57: struct cfdriver admtmp_cd = {
! 58: NULL, "admtmp", DV_DULL
! 59: };
! 60:
! 61: int
! 62: admtmp_match(struct device *parent, void *match, void *aux)
! 63: {
! 64: struct i2c_attach_args *ia = aux;
! 65:
! 66: if (strcmp(ia->ia_name, "adm1030") == 0)
! 67: return (1);
! 68: return (0);
! 69: }
! 70:
! 71: void
! 72: admtmp_attach(struct device *parent, struct device *self, void *aux)
! 73: {
! 74: struct admtmp_softc *sc = (struct admtmp_softc *)self;
! 75: struct i2c_attach_args *ia = aux;
! 76: u_int8_t cmd, data;
! 77: int i;
! 78:
! 79: sc->sc_tag = ia->ia_tag;
! 80: sc->sc_addr = ia->ia_addr;
! 81:
! 82: cmd = ADM1030_FANC;
! 83: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 84: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
! 85: printf(", unable to read fan setting\n");
! 86: return;
! 87: }
! 88:
! 89: sc->sc_fanmul = 11250/8 * (1 << ADM1024_FANC_VAL(data)) * 60;
! 90:
! 91: /* Initialize sensor data. */
! 92: strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
! 93: sizeof(sc->sc_sensordev.xname));
! 94:
! 95: sc->sc_sensor[ADMTMP_INT].type = SENSOR_TEMP;
! 96: strlcpy(sc->sc_sensor[ADMTMP_INT].desc, "Internal",
! 97: sizeof(sc->sc_sensor[ADMTMP_INT].desc));
! 98:
! 99: sc->sc_sensor[ADMTMP_EXT].type = SENSOR_TEMP;
! 100: strlcpy(sc->sc_sensor[ADMTMP_EXT].desc, "External",
! 101: sizeof(sc->sc_sensor[ADMTMP_EXT].desc));
! 102:
! 103: sc->sc_sensor[ADMTMP_FAN].type = SENSOR_FANRPM;
! 104:
! 105: if (sensor_task_register(sc, admtmp_refresh, 5) == NULL) {
! 106: printf(", unable to register update task\n");
! 107: return;
! 108: }
! 109:
! 110: for (i = 0; i < ADMTMP_NUM_SENSORS; i++)
! 111: sensor_attach(&sc->sc_sensordev, &sc->sc_sensor[i]);
! 112: sensordev_install(&sc->sc_sensordev);
! 113:
! 114: printf("\n");
! 115: }
! 116:
! 117: void
! 118: admtmp_refresh(void *arg)
! 119: {
! 120: struct admtmp_softc *sc = arg;
! 121: u_int8_t cmd, data;
! 122:
! 123: iic_acquire_bus(sc->sc_tag, 0);
! 124:
! 125: cmd = ADM1030_INT_TEMP;
! 126: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 127: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
! 128: sc->sc_sensor[ADMTMP_INT].value = 273150000 + 1000000 * data;
! 129:
! 130: cmd = ADM1030_EXT_TEMP;
! 131: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 132: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
! 133: sc->sc_sensor[ADMTMP_EXT].value = 273150000 + 1000000 * data;
! 134:
! 135: cmd = ADM1030_FAN;
! 136: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 137: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0) {
! 138: if (data == 0)
! 139: sc->sc_sensor[ADMTMP_FAN].flags |= SENSOR_FINVALID;
! 140: else {
! 141: sc->sc_sensor[ADMTMP_FAN].value =
! 142: sc->sc_fanmul / (2 * (int)data);
! 143: sc->sc_sensor[ADMTMP_FAN].flags &= ~SENSOR_FINVALID;
! 144: }
! 145: }
! 146:
! 147: iic_release_bus(sc->sc_tag, 0);
! 148: }
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