Annotation of sys/dev/i2c/adm1024.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: adm1024.c,v 1.14 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 1024 registers */
! 27: #define ADM1024_V2_5 0x20
! 28: #define ADM1024_Vccp 0x21
! 29: #define ADM1024_Vcc 0x22
! 30: #define ADM1024_V5 0x23
! 31: #define ADM1024_V12 0x24
! 32: #define ADM1024_Vccp2 0x25
! 33: #define ADM1024_EXT_TEMP 0x26
! 34: #define ADM1024_INT_TEMP 0x27
! 35: #define ADM1024_FAN1 0x28
! 36: #define ADM1024_FAN2 0x29
! 37: #define ADM1024_STATUS2 0x42
! 38: #define ADM1024_FANC 0x47
! 39: #define ADM1024_STATUS2_EXT 0x40
! 40: #define ADM1024_COMPANY 0x3e /* contains 0x41 */
! 41: #define ADM1024_STEPPING 0x3f /* contains 0x2? */
! 42: #define ADM1024_CONFIG1 0x40
! 43: #define ADM1024_CONFIG1_START 0x01
! 44: #define ADM1024_CONFIG1_INTCLR 0x08
! 45:
! 46: /* Sensors */
! 47: #define ADMLC_INT 0
! 48: #define ADMLC_EXT 1
! 49: #define ADMLC_V2_5 2
! 50: #define ADMLC_Vccp 3
! 51: #define ADMLC_Vcc 4
! 52: #define ADMLC_V5 5
! 53: #define ADMLC_V12 6
! 54: #define ADMLC_Vccp2 7
! 55: #define ADMLC_FAN1 8
! 56: #define ADMLC_FAN2 9
! 57: #define ADMLC_NUM_SENSORS 10
! 58:
! 59: struct admlc_softc {
! 60: struct device sc_dev;
! 61: i2c_tag_t sc_tag;
! 62: i2c_addr_t sc_addr;
! 63:
! 64: struct ksensor sc_sensor[ADMLC_NUM_SENSORS];
! 65: struct ksensordev sc_sensordev;
! 66: int sc_fan1mul;
! 67: int sc_fan2mul;
! 68: };
! 69:
! 70: int admlc_match(struct device *, void *, void *);
! 71: void admlc_attach(struct device *, struct device *, void *);
! 72: void admlc_refresh(void *);
! 73:
! 74: struct cfattach admlc_ca = {
! 75: sizeof(struct admlc_softc), admlc_match, admlc_attach
! 76: };
! 77:
! 78: struct cfdriver admlc_cd = {
! 79: NULL, "admlc", DV_DULL
! 80: };
! 81:
! 82: int
! 83: admlc_match(struct device *parent, void *match, void *aux)
! 84: {
! 85: struct i2c_attach_args *ia = aux;
! 86:
! 87: if (strcmp(ia->ia_name, "adm1024") == 0)
! 88: return (1);
! 89: return (0);
! 90: }
! 91:
! 92: void
! 93: admlc_attach(struct device *parent, struct device *self, void *aux)
! 94: {
! 95: struct admlc_softc *sc = (struct admlc_softc *)self;
! 96: struct i2c_attach_args *ia = aux;
! 97: u_int8_t cmd, data, data2;
! 98: int i;
! 99:
! 100: sc->sc_tag = ia->ia_tag;
! 101: sc->sc_addr = ia->ia_addr;
! 102:
! 103: iic_acquire_bus(sc->sc_tag, 0);
! 104: cmd = ADM1024_CONFIG1;
! 105: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 106: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
! 107: iic_release_bus(sc->sc_tag, 0);
! 108: printf(": cannot get control register\n");
! 109: return;
! 110: }
! 111: data2 = data | ADM1024_CONFIG1_START;
! 112: data2 = data2 & ~ADM1024_CONFIG1_INTCLR;
! 113: if (data != data2) {
! 114: if (iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP,
! 115: sc->sc_addr, &cmd, sizeof cmd, &data2, sizeof data2, 0)) {
! 116: iic_release_bus(sc->sc_tag, 0);
! 117: printf(": cannot set control register\n");
! 118: return;
! 119: }
! 120: }
! 121:
! 122: cmd = ADM1024_FANC;
! 123: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 124: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
! 125: printf(", unable to read fan setting\n");
! 126: return;
! 127: }
! 128: sc->sc_fan1mul = (1 << (data >> 4) & 0x3);
! 129: sc->sc_fan2mul = (1 << (data >> 6) & 0x3);
! 130:
! 131: iic_release_bus(sc->sc_tag, 0);
! 132:
! 133: /* Initialize sensor data. */
! 134: strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
! 135: sizeof(sc->sc_sensordev.xname));
! 136:
! 137: sc->sc_sensor[ADMLC_INT].type = SENSOR_TEMP;
! 138: strlcpy(sc->sc_sensor[ADMLC_INT].desc, "Internal",
! 139: sizeof(sc->sc_sensor[ADMLC_INT].desc));
! 140:
! 141: sc->sc_sensor[ADMLC_EXT].type = SENSOR_TEMP;
! 142: strlcpy(sc->sc_sensor[ADMLC_EXT].desc, "External",
! 143: sizeof(sc->sc_sensor[ADMLC_EXT].desc));
! 144:
! 145: sc->sc_sensor[ADMLC_V2_5].type = SENSOR_VOLTS_DC;
! 146: strlcpy(sc->sc_sensor[ADMLC_V2_5].desc, "2.5 V",
! 147: sizeof(sc->sc_sensor[ADMLC_V2_5].desc));
! 148:
! 149: sc->sc_sensor[ADMLC_Vccp].type = SENSOR_VOLTS_DC;
! 150: strlcpy(sc->sc_sensor[ADMLC_Vccp].desc, "Vccp",
! 151: sizeof(sc->sc_sensor[ADMLC_Vccp].desc));
! 152:
! 153: sc->sc_sensor[ADMLC_Vcc].type = SENSOR_VOLTS_DC;
! 154: strlcpy(sc->sc_sensor[ADMLC_Vcc].desc, "Vcc",
! 155: sizeof(sc->sc_sensor[ADMLC_Vcc].desc));
! 156:
! 157: sc->sc_sensor[ADMLC_V5].type = SENSOR_VOLTS_DC;
! 158: strlcpy(sc->sc_sensor[ADMLC_V5].desc, "5 V",
! 159: sizeof(sc->sc_sensor[ADMLC_V5].desc));
! 160:
! 161: sc->sc_sensor[ADMLC_V12].type = SENSOR_VOLTS_DC;
! 162: strlcpy(sc->sc_sensor[ADMLC_V12].desc, "12 V",
! 163: sizeof(sc->sc_sensor[ADMLC_V12].desc));
! 164:
! 165: sc->sc_sensor[ADMLC_Vccp2].type = SENSOR_VOLTS_DC;
! 166: strlcpy(sc->sc_sensor[ADMLC_Vccp2].desc, "Vccp2",
! 167: sizeof(sc->sc_sensor[ADMLC_Vccp2].desc));
! 168:
! 169: sc->sc_sensor[ADMLC_FAN1].type = SENSOR_FANRPM;
! 170:
! 171: sc->sc_sensor[ADMLC_FAN2].type = SENSOR_FANRPM;
! 172:
! 173:
! 174: if (sensor_task_register(sc, admlc_refresh, 5) == NULL) {
! 175: printf(", unable to register update task\n");
! 176: return;
! 177: }
! 178:
! 179: for (i = 0; i < ADMLC_NUM_SENSORS; i++)
! 180: sensor_attach(&sc->sc_sensordev, &sc->sc_sensor[i]);
! 181: sensordev_install(&sc->sc_sensordev);
! 182:
! 183: printf("\n");
! 184: }
! 185:
! 186: static void
! 187: fanval(struct ksensor *sens, int mul, u_int8_t data)
! 188: {
! 189: int tmp = data * mul;
! 190:
! 191: if (tmp == 0)
! 192: sens->flags |= SENSOR_FINVALID;
! 193: else
! 194: sens->value = 1350000 / tmp;
! 195: }
! 196:
! 197: void
! 198: admlc_refresh(void *arg)
! 199: {
! 200: struct admlc_softc *sc = arg;
! 201: u_int8_t cmd, data;
! 202: int8_t sdata;
! 203:
! 204: iic_acquire_bus(sc->sc_tag, 0);
! 205:
! 206: cmd = ADM1024_INT_TEMP;
! 207: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 208: sc->sc_addr, &cmd, sizeof cmd, &sdata, sizeof sdata, 0) == 0)
! 209: sc->sc_sensor[ADMLC_INT].value = 273150000 + 1000000 * sdata;
! 210:
! 211: cmd = ADM1024_EXT_TEMP;
! 212: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 213: sc->sc_addr, &cmd, sizeof cmd, &sdata, sizeof sdata, 0) == 0)
! 214: sc->sc_sensor[ADMLC_EXT].value = 273150000 + 1000000 * sdata;
! 215:
! 216: cmd = ADM1024_STATUS2;
! 217: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 218: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0) {
! 219: if (data & ADM1024_STATUS2_EXT)
! 220: sc->sc_sensor[ADMLC_EXT].flags |= SENSOR_FINVALID;
! 221: else
! 222: sc->sc_sensor[ADMLC_EXT].flags &= ~SENSOR_FINVALID;
! 223: }
! 224:
! 225: cmd = ADM1024_V2_5;
! 226: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 227: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
! 228: sc->sc_sensor[ADMLC_V2_5].value = 2500000 * data / 192;
! 229:
! 230: cmd = ADM1024_Vccp;
! 231: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 232: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
! 233: sc->sc_sensor[ADMLC_Vcc].value = 2249000 * data / 192;
! 234:
! 235: cmd = ADM1024_Vcc;
! 236: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 237: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
! 238: sc->sc_sensor[ADMLC_Vcc].value = 3300000 * data / 192;
! 239:
! 240: cmd = ADM1024_V5;
! 241: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 242: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
! 243: sc->sc_sensor[ADMLC_V5].value = 5000000 * data / 192;
! 244:
! 245: cmd = ADM1024_V12;
! 246: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 247: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
! 248: sc->sc_sensor[ADMLC_V12].value = 12000000 * data / 192;
! 249:
! 250: cmd = ADM1024_Vccp2;
! 251: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 252: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
! 253: sc->sc_sensor[ADMLC_Vccp2].value = 2700000 * data / 192;
! 254:
! 255: cmd = ADM1024_FAN1;
! 256: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 257: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
! 258: fanval(&sc->sc_sensor[ADMLC_FAN1], sc->sc_fan1mul, data);
! 259:
! 260: cmd = ADM1024_FAN2;
! 261: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
! 262: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0) == 0)
! 263: fanval(&sc->sc_sensor[ADMLC_FAN2], sc->sc_fan2mul, data);
! 264: iic_release_bus(sc->sc_tag, 0);
! 265: }
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