Annotation of sys/dev/i2c/adm1021.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: adm1021.c,v 1.27 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 1021 registers */
27: #define ADM1021_INT_TEMP 0x00
28: #define ADM1021_EXT_TEMP 0x01
29: #define ADM1021_STATUS 0x02
30: #define ADM1021_STATUS_INVAL 0x7f
31: #define ADM1021_STATUS_NOEXT 0x40
32: #define ADM1021_CONFIG_READ 0x03
33: #define ADM1021_CONFIG_WRITE 0x09
34: #define ADM1021_CONFIG_RUN 0x40
35: #define ADM1021_COMPANY 0xfe /* contains 0x41 */
36: #define ADM1021_STEPPING 0xff /* contains 0x3? */
37:
38: /* Sensors */
39: #define ADMTEMP_EXT 0
40: #define ADMTEMP_INT 1
41: #define ADMTEMP_NUM_SENSORS 2
42:
43: struct admtemp_softc {
44: struct device sc_dev;
45: i2c_tag_t sc_tag;
46: i2c_addr_t sc_addr;
47:
48: struct ksensor sc_sensor[ADMTEMP_NUM_SENSORS];
49: struct ksensordev sc_sensordev;
50: int sc_noexternal;
51: };
52:
53: int admtemp_match(struct device *, void *, void *);
54: void admtemp_attach(struct device *, struct device *, void *);
55: void admtemp_refresh(void *);
56:
57: struct cfattach admtemp_ca = {
58: sizeof(struct admtemp_softc), admtemp_match, admtemp_attach
59: };
60:
61: struct cfdriver admtemp_cd = {
62: NULL, "admtemp", DV_DULL
63: };
64:
65: int
66: admtemp_match(struct device *parent, void *match, void *aux)
67: {
68: struct i2c_attach_args *ia = aux;
69:
70: if (strcmp(ia->ia_name, "adm1021") == 0 ||
71: strcmp(ia->ia_name, "adm1023") == 0 ||
72: strcmp(ia->ia_name, "adm1032") == 0 ||
73: strcmp(ia->ia_name, "g781") == 0 ||
74: strcmp(ia->ia_name, "g781-1") == 0 ||
75: strcmp(ia->ia_name, "gl523sm") == 0 ||
76: strcmp(ia->ia_name, "max1617") == 0 ||
77: strcmp(ia->ia_name, "xeontemp") == 0)
78: return (1);
79: return (0);
80: }
81:
82: void
83: admtemp_attach(struct device *parent, struct device *self, void *aux)
84: {
85: struct admtemp_softc *sc = (struct admtemp_softc *)self;
86: struct i2c_attach_args *ia = aux;
87: u_int8_t cmd, data, stat;
88: int xeon = 0, i;
89:
90: sc->sc_tag = ia->ia_tag;
91: sc->sc_addr = ia->ia_addr;
92:
93: if (strcmp(ia->ia_name, "xeontemp") == 0) {
94: printf(": Xeon");
95: xeon = 1;
96: } else
97: printf(": %s", ia->ia_name);
98:
99: iic_acquire_bus(sc->sc_tag, 0);
100: cmd = ADM1021_CONFIG_READ;
101: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
102: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
103: iic_release_bus(sc->sc_tag, 0);
104: printf(", cannot get control register\n");
105: return;
106: }
107: if (data & ADM1021_CONFIG_RUN) {
108: cmd = ADM1021_STATUS;
109: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
110: sc->sc_addr, &cmd, sizeof cmd, &stat, sizeof stat, 0)) {
111: iic_release_bus(sc->sc_tag, 0);
112: printf(", cannot read status register\n");
113: return;
114: }
115: if ((stat & ADM1021_STATUS_INVAL) == ADM1021_STATUS_INVAL) {
116: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
117: sc->sc_addr, &cmd, sizeof cmd, &stat, sizeof stat, 0)) {
118: iic_release_bus(sc->sc_tag, 0);
119: printf(", cannot read status register\n");
120: return;
121: }
122: }
123:
124: /* means external is dead */
125: if ((stat & ADM1021_STATUS_INVAL) != ADM1021_STATUS_INVAL &&
126: (stat & ADM1021_STATUS_NOEXT))
127: sc->sc_noexternal = 1;
128:
129: data &= ~ADM1021_CONFIG_RUN;
130: cmd = ADM1021_CONFIG_WRITE;
131: if (iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP,
132: sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
133: iic_release_bus(sc->sc_tag, 0);
134: printf(", cannot set control register\n");
135: return;
136: }
137: }
138: iic_release_bus(sc->sc_tag, 0);
139:
140: /* Initialize sensor data. */
141: strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
142: sizeof(sc->sc_sensordev.xname));
143:
144: sc->sc_sensor[ADMTEMP_EXT].type = SENSOR_TEMP;
145: strlcpy(sc->sc_sensor[ADMTEMP_EXT].desc,
146: xeon ? "Xeon" : "External",
147: sizeof(sc->sc_sensor[ADMTEMP_EXT].desc));
148:
149: sc->sc_sensor[ADMTEMP_INT].type = SENSOR_TEMP;
150: strlcpy(sc->sc_sensor[ADMTEMP_INT].desc,
151: xeon ? "Xeon" : "Internal",
152: sizeof(sc->sc_sensor[ADMTEMP_INT].desc));
153:
154: if (sensor_task_register(sc, admtemp_refresh, 5) == NULL) {
155: printf(", unable to register update task\n");
156: return;
157: }
158:
159: for (i = 0; i < (sc->sc_noexternal ? 1 : ADMTEMP_NUM_SENSORS); i++)
160: sensor_attach(&sc->sc_sensordev, &sc->sc_sensor[i]);
161: sensordev_install(&sc->sc_sensordev);
162:
163: printf("\n");
164: }
165:
166: void
167: admtemp_refresh(void *arg)
168: {
169: struct admtemp_softc *sc = arg;
170: u_int8_t cmd;
171: int8_t sdata;
172:
173: iic_acquire_bus(sc->sc_tag, 0);
174:
175: if (sc->sc_noexternal == 0) {
176: cmd = ADM1021_EXT_TEMP;
177: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, sc->sc_addr,
178: &cmd, sizeof cmd, &sdata, sizeof sdata, 0) == 0) {
179: if (sdata == 0x7f) {
180: sc->sc_sensor[ADMTEMP_EXT].flags |= SENSOR_FINVALID;
181: } else {
182: sc->sc_sensor[ADMTEMP_EXT].value =
183: 273150000 + 1000000 * sdata;
184: sc->sc_sensor[ADMTEMP_EXT].flags &= ~SENSOR_FINVALID;
185: }
186: }
187: } else
188: sc->sc_sensor[ADMTEMP_EXT].flags |= SENSOR_FINVALID;
189:
190:
191: cmd = ADM1021_INT_TEMP;
192: if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, sc->sc_addr,
193: &cmd, sizeof cmd, &sdata, sizeof sdata, 0) == 0) {
194: if (sdata == 0x7f) {
195: sc->sc_sensor[ADMTEMP_INT].flags |= SENSOR_FINVALID;
196: } else {
197: sc->sc_sensor[ADMTEMP_INT].value =
198: 273150000 + 1000000 * sdata;
199: sc->sc_sensor[ADMTEMP_INT].flags &= ~SENSOR_FINVALID;
200: }
201: }
202:
203: iic_release_bus(sc->sc_tag, 0);
204: }
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to adm1021.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / dev / i2c