1 /* $OpenBSD: adm1031.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 1031 registers */ 27 #define ADM1031_INT_TEMP 0x0a 28 #define ADM1031_EXT_TEMP 0x0b 29 #define ADM1031_EXT2_TEMP 0x0c 30 #define ADM1031_FAN 0x08 31 #define ADM1031_FANC 0x20 32 #define ADM1031_FAN2 0x09 33 #define ADM1031_FAN2C 0x21 34 #define ADM1024_FANC_VAL(x) (x >> 6) 35 36 /* Sensors */ 37 #define ADMTT_INT 0 38 #define ADMTT_EXT 1 39 #define ADMTT_EXT2 2 40 #define ADMTT_FAN 3 41 #define ADMTT_FAN2 4 42 #define ADMTT_NUM_SENSORS 5 43 44 struct admtt_softc { 45 struct device sc_dev; 46 i2c_tag_t sc_tag; 47 i2c_addr_t sc_addr; 48 int sc_fanmul; 49 50 struct ksensor sc_sensor[ADMTT_NUM_SENSORS]; 51 struct ksensordev sc_sensordev; 52 }; 53 54 int admtt_match(struct device *, void *, void *); 55 void admtt_attach(struct device *, struct device *, void *); 56 void admtt_refresh(void *); 57 58 struct cfattach admtt_ca = { 59 sizeof(struct admtt_softc), admtt_match, admtt_attach 60 }; 61 62 struct cfdriver admtt_cd = { 63 NULL, "admtt", DV_DULL 64 }; 65 66 int 67 admtt_match(struct device *parent, void *match, void *aux) 68 { 69 struct i2c_attach_args *ia = aux; 70 71 if (strcmp(ia->ia_name, "adm1031") == 0) 72 return (1); 73 return (0); 74 } 75 76 void 77 admtt_attach(struct device *parent, struct device *self, void *aux) 78 { 79 struct admtt_softc *sc = (struct admtt_softc *)self; 80 struct i2c_attach_args *ia = aux; 81 u_int8_t cmd, data; 82 int i; 83 84 sc->sc_tag = ia->ia_tag; 85 sc->sc_addr = ia->ia_addr; 86 87 cmd = ADM1031_FANC; 88 if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, 89 sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) { 90 printf(", unable to read fan setting\n"); 91 return; 92 } 93 sc->sc_fanmul = 11250/8 * (1 << ADM1024_FANC_VAL(data)) * 60; 94 95 /* Initialize sensor data. */ 96 strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname, 97 sizeof(sc->sc_sensordev.xname)); 98 99 sc->sc_sensor[ADMTT_INT].type = SENSOR_TEMP; 100 strlcpy(sc->sc_sensor[ADMTT_INT].desc, "Internal", 101 sizeof(sc->sc_sensor[ADMTT_INT].desc)); 102 103 sc->sc_sensor[ADMTT_EXT].type = SENSOR_TEMP; 104 strlcpy(sc->sc_sensor[ADMTT_EXT].desc, "External", 105 sizeof(sc->sc_sensor[ADMTT_EXT].desc)); 106 107 sc->sc_sensor[ADMTT_EXT2].type = SENSOR_TEMP; 108 strlcpy(sc->sc_sensor[ADMTT_EXT2].desc, "External", 109 sizeof(sc->sc_sensor[ADMTT_EXT2].desc)); 110 111 sc->sc_sensor[ADMTT_FAN].type = SENSOR_FANRPM; 112 113 sc->sc_sensor[ADMTT_FAN2].type = SENSOR_FANRPM; 114 115 if (sensor_task_register(sc, admtt_refresh, 5) == NULL) { 116 printf(", unable to register update task\n"); 117 return; 118 } 119 120 for (i = 0; i < ADMTT_NUM_SENSORS; i++) 121 sensor_attach(&sc->sc_sensordev, &sc->sc_sensor[i]); 122 sensordev_install(&sc->sc_sensordev); 123 124 printf("\n"); 125 } 126 127 void 128 admtt_refresh(void *arg) 129 { 130 struct admtt_softc *sc = arg; 131 u_int8_t cmd, data; 132 133 iic_acquire_bus(sc->sc_tag, 0); 134 135 cmd = ADM1031_INT_TEMP; 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 sc->sc_sensor[ADMTT_INT].value = 273150000 + 1000000 * data; 139 140 cmd = ADM1031_EXT_TEMP; 141 if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, 142 sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0) 143 sc->sc_sensor[ADMTT_EXT].value = 273150000 + 1000000 * data; 144 145 cmd = ADM1031_EXT2_TEMP; 146 if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, 147 sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0) 148 sc->sc_sensor[ADMTT_EXT2].value = 273150000 + 1000000 * data; 149 150 cmd = ADM1031_FAN; 151 if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, 152 sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0) { 153 if (data == 0) 154 sc->sc_sensor[ADMTT_FAN].flags |= SENSOR_FINVALID; 155 else { 156 sc->sc_sensor[ADMTT_FAN].value = 157 sc->sc_fanmul / (2 * (int)data); 158 sc->sc_sensor[ADMTT_FAN].flags &= ~SENSOR_FINVALID; 159 } 160 } 161 162 cmd = ADM1031_FAN2; 163 if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, 164 sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0) { 165 if (data == 0) 166 sc->sc_sensor[ADMTT_FAN2].flags |= SENSOR_FINVALID; 167 else { 168 sc->sc_sensor[ADMTT_FAN2].value = 169 sc->sc_fanmul / (2 * (int)data); 170 sc->sc_sensor[ADMTT_FAN2].flags &= ~SENSOR_FINVALID; 171 } 172 } 173 174 iic_release_bus(sc->sc_tag, 0); 175 } 176