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59ac8367 HR |
1 | /* |
2 | smsc47m192.c - Support for hardware monitoring block of | |
3 | SMSC LPC47M192 and LPC47M997 Super I/O chips | |
4 | ||
5 | Copyright (C) 2006 Hartmut Rick <linux@rick.claranet.de> | |
6 | ||
7 | Derived from lm78.c and other chip drivers. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | */ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/jiffies.h> | |
28 | #include <linux/i2c.h> | |
29 | #include <linux/hwmon.h> | |
30 | #include <linux/hwmon-sysfs.h> | |
31 | #include <linux/hwmon-vid.h> | |
32 | #include <linux/err.h> | |
33 | ||
34 | /* Addresses to scan */ | |
35 | static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; | |
36 | ||
37 | /* Insmod parameters */ | |
38 | I2C_CLIENT_INSMOD_1(smsc47m192); | |
39 | ||
40 | /* SMSC47M192 registers */ | |
41 | #define SMSC47M192_REG_IN(nr) ((nr)<6 ? (0x20 + (nr)) : \ | |
42 | (0x50 + (nr) - 6)) | |
43 | #define SMSC47M192_REG_IN_MAX(nr) ((nr)<6 ? (0x2b + (nr) * 2) : \ | |
44 | (0x54 + (((nr) - 6) * 2))) | |
45 | #define SMSC47M192_REG_IN_MIN(nr) ((nr)<6 ? (0x2c + (nr) * 2) : \ | |
46 | (0x55 + (((nr) - 6) * 2))) | |
47 | static u8 SMSC47M192_REG_TEMP[3] = { 0x27, 0x26, 0x52 }; | |
48 | static u8 SMSC47M192_REG_TEMP_MAX[3] = { 0x39, 0x37, 0x58 }; | |
49 | static u8 SMSC47M192_REG_TEMP_MIN[3] = { 0x3A, 0x38, 0x59 }; | |
50 | #define SMSC47M192_REG_TEMP_OFFSET(nr) ((nr)==2 ? 0x1e : 0x1f) | |
51 | #define SMSC47M192_REG_ALARM1 0x41 | |
52 | #define SMSC47M192_REG_ALARM2 0x42 | |
53 | #define SMSC47M192_REG_VID 0x47 | |
54 | #define SMSC47M192_REG_VID4 0x49 | |
55 | #define SMSC47M192_REG_CONFIG 0x40 | |
56 | #define SMSC47M192_REG_SFR 0x4f | |
57 | #define SMSC47M192_REG_COMPANY_ID 0x3e | |
58 | #define SMSC47M192_REG_VERSION 0x3f | |
59 | ||
60 | /* generalised scaling with integer rounding */ | |
61 | static inline int SCALE(long val, int mul, int div) | |
62 | { | |
63 | if (val < 0) | |
64 | return (val * mul - div / 2) / div; | |
65 | else | |
66 | return (val * mul + div / 2) / div; | |
67 | } | |
68 | ||
69 | /* Conversions */ | |
70 | ||
71 | /* smsc47m192 internally scales voltage measurements */ | |
72 | static const u16 nom_mv[] = { 2500, 2250, 3300, 5000, 12000, 3300, 1500, 1800 }; | |
73 | ||
74 | static inline unsigned int IN_FROM_REG(u8 reg, int n) | |
75 | { | |
76 | return SCALE(reg, nom_mv[n], 192); | |
77 | } | |
78 | ||
79 | static inline u8 IN_TO_REG(unsigned long val, int n) | |
80 | { | |
81 | return SENSORS_LIMIT(SCALE(val, 192, nom_mv[n]), 0, 255); | |
82 | } | |
83 | ||
84 | /* TEMP: 0.001 degC units (-128C to +127C) | |
85 | REG: 1C/bit, two's complement */ | |
86 | static inline s8 TEMP_TO_REG(int val) | |
87 | { | |
88 | return SENSORS_LIMIT(SCALE(val, 1, 1000), -128000, 127000); | |
89 | } | |
90 | ||
91 | static inline int TEMP_FROM_REG(s8 val) | |
92 | { | |
93 | return val * 1000; | |
94 | } | |
95 | ||
96 | struct smsc47m192_data { | |
97 | struct i2c_client client; | |
98 | struct class_device *class_dev; | |
99 | struct semaphore update_lock; | |
100 | char valid; /* !=0 if following fields are valid */ | |
101 | unsigned long last_updated; /* In jiffies */ | |
102 | ||
103 | u8 in[8]; /* Register value */ | |
104 | u8 in_max[8]; /* Register value */ | |
105 | u8 in_min[8]; /* Register value */ | |
106 | s8 temp[3]; /* Register value */ | |
107 | s8 temp_max[3]; /* Register value */ | |
108 | s8 temp_min[3]; /* Register value */ | |
109 | s8 temp_offset[3]; /* Register value */ | |
110 | u16 alarms; /* Register encoding, combined */ | |
111 | u8 vid; /* Register encoding, combined */ | |
112 | u8 vrm; | |
113 | }; | |
114 | ||
115 | static int smsc47m192_attach_adapter(struct i2c_adapter *adapter); | |
116 | static int smsc47m192_detect(struct i2c_adapter *adapter, int address, | |
117 | int kind); | |
118 | static int smsc47m192_detach_client(struct i2c_client *client); | |
119 | static struct smsc47m192_data *smsc47m192_update_device(struct device *dev); | |
120 | ||
121 | static struct i2c_driver smsc47m192_driver = { | |
122 | .driver = { | |
123 | .name = "smsc47m192", | |
124 | }, | |
125 | .attach_adapter = smsc47m192_attach_adapter, | |
126 | .detach_client = smsc47m192_detach_client, | |
127 | }; | |
128 | ||
129 | /* Voltages */ | |
130 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, | |
131 | char *buf) | |
132 | { | |
133 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
134 | int nr = sensor_attr->index; | |
135 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
136 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr], nr)); | |
137 | } | |
138 | ||
139 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, | |
140 | char *buf) | |
141 | { | |
142 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
143 | int nr = sensor_attr->index; | |
144 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
145 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr], nr)); | |
146 | } | |
147 | ||
148 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, | |
149 | char *buf) | |
150 | { | |
151 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
152 | int nr = sensor_attr->index; | |
153 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
154 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr], nr)); | |
155 | } | |
156 | ||
157 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, | |
158 | const char *buf, size_t count) | |
159 | { | |
160 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
161 | int nr = sensor_attr->index; | |
162 | struct i2c_client *client = to_i2c_client(dev); | |
163 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
164 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
165 | ||
166 | down(&data->update_lock); | |
167 | data->in_min[nr] = IN_TO_REG(val, nr); | |
168 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MIN(nr), | |
169 | data->in_min[nr]); | |
170 | up(&data->update_lock); | |
171 | return count; | |
172 | } | |
173 | ||
174 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, | |
175 | const char *buf, size_t count) | |
176 | { | |
177 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
178 | int nr = sensor_attr->index; | |
179 | struct i2c_client *client = to_i2c_client(dev); | |
180 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
181 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
182 | ||
183 | down(&data->update_lock); | |
184 | data->in_max[nr] = IN_TO_REG(val, nr); | |
185 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MAX(nr), | |
186 | data->in_max[nr]); | |
187 | up(&data->update_lock); | |
188 | return count; | |
189 | } | |
190 | ||
191 | #define show_in_offset(offset) \ | |
192 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ | |
193 | show_in, NULL, offset); \ | |
194 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
195 | show_in_min, set_in_min, offset); \ | |
196 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
197 | show_in_max, set_in_max, offset); | |
198 | ||
199 | show_in_offset(0) | |
200 | show_in_offset(1) | |
201 | show_in_offset(2) | |
202 | show_in_offset(3) | |
203 | show_in_offset(4) | |
204 | show_in_offset(5) | |
205 | show_in_offset(6) | |
206 | show_in_offset(7) | |
207 | ||
208 | /* Temperatures */ | |
209 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, | |
210 | char *buf) | |
211 | { | |
212 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
213 | int nr = sensor_attr->index; | |
214 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
215 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
216 | } | |
217 | ||
218 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, | |
219 | char *buf) | |
220 | { | |
221 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
222 | int nr = sensor_attr->index; | |
223 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
224 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr])); | |
225 | } | |
226 | ||
227 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, | |
228 | char *buf) | |
229 | { | |
230 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
231 | int nr = sensor_attr->index; | |
232 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
233 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr])); | |
234 | } | |
235 | ||
236 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, | |
237 | const char *buf, size_t count) | |
238 | { | |
239 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
240 | int nr = sensor_attr->index; | |
241 | struct i2c_client *client = to_i2c_client(dev); | |
242 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
243 | long val = simple_strtol(buf, NULL, 10); | |
244 | ||
245 | down(&data->update_lock); | |
246 | data->temp_min[nr] = TEMP_TO_REG(val); | |
247 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MIN[nr], | |
248 | data->temp_min[nr]); | |
249 | up(&data->update_lock); | |
250 | return count; | |
251 | } | |
252 | ||
253 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, | |
254 | const char *buf, size_t count) | |
255 | { | |
256 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
257 | int nr = sensor_attr->index; | |
258 | struct i2c_client *client = to_i2c_client(dev); | |
259 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
260 | long val = simple_strtol(buf, NULL, 10); | |
261 | ||
262 | down(&data->update_lock); | |
263 | data->temp_max[nr] = TEMP_TO_REG(val); | |
264 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MAX[nr], | |
265 | data->temp_max[nr]); | |
266 | up(&data->update_lock); | |
267 | return count; | |
268 | } | |
269 | ||
270 | static ssize_t show_temp_offset(struct device *dev, struct device_attribute | |
271 | *attr, char *buf) | |
272 | { | |
273 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
274 | int nr = sensor_attr->index; | |
275 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
276 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr])); | |
277 | } | |
278 | ||
279 | static ssize_t set_temp_offset(struct device *dev, struct device_attribute | |
280 | *attr, const char *buf, size_t count) | |
281 | { | |
282 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
283 | int nr = sensor_attr->index; | |
284 | struct i2c_client *client = to_i2c_client(dev); | |
285 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
286 | u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR); | |
287 | long val = simple_strtol(buf, NULL, 10); | |
288 | ||
289 | down(&data->update_lock); | |
290 | data->temp_offset[nr] = TEMP_TO_REG(val); | |
291 | if (nr>1) | |
292 | i2c_smbus_write_byte_data(client, | |
293 | SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]); | |
294 | else if (data->temp_offset[nr] != 0) { | |
295 | /* offset[0] and offset[1] share the same register, | |
296 | SFR bit 4 activates offset[0] */ | |
297 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR, | |
298 | (sfr & 0xef) | (nr==0 ? 0x10 : 0)); | |
299 | data->temp_offset[1-nr] = 0; | |
300 | i2c_smbus_write_byte_data(client, | |
301 | SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]); | |
302 | } else if ((sfr & 0x10) == (nr==0 ? 0x10 : 0)) | |
303 | i2c_smbus_write_byte_data(client, | |
304 | SMSC47M192_REG_TEMP_OFFSET(nr), 0); | |
305 | up(&data->update_lock); | |
306 | return count; | |
307 | } | |
308 | ||
309 | #define show_temp_index(index) \ | |
310 | static SENSOR_DEVICE_ATTR(temp##index##_input, S_IRUGO, \ | |
311 | show_temp, NULL, index-1); \ | |
312 | static SENSOR_DEVICE_ATTR(temp##index##_min, S_IRUGO | S_IWUSR, \ | |
313 | show_temp_min, set_temp_min, index-1); \ | |
314 | static SENSOR_DEVICE_ATTR(temp##index##_max, S_IRUGO | S_IWUSR, \ | |
315 | show_temp_max, set_temp_max, index-1); \ | |
316 | static SENSOR_DEVICE_ATTR(temp##index##_offset, S_IRUGO | S_IWUSR, \ | |
317 | show_temp_offset, set_temp_offset, index-1); | |
318 | ||
319 | show_temp_index(1) | |
320 | show_temp_index(2) | |
321 | show_temp_index(3) | |
322 | ||
323 | /* VID */ | |
324 | static ssize_t show_vid(struct device *dev, struct device_attribute *attr, | |
325 | char *buf) | |
326 | { | |
327 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
328 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); | |
329 | } | |
330 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); | |
331 | ||
332 | static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, | |
333 | char *buf) | |
334 | { | |
335 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
336 | return sprintf(buf, "%d\n", data->vrm); | |
337 | } | |
338 | ||
339 | static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, | |
340 | const char *buf, size_t count) | |
341 | { | |
342 | struct i2c_client *client = to_i2c_client(dev); | |
343 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
344 | data->vrm = simple_strtoul(buf, NULL, 10); | |
345 | return count; | |
346 | } | |
347 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); | |
348 | ||
349 | /* Alarms */ | |
350 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, | |
351 | char *buf) | |
352 | { | |
353 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
354 | int nr = sensor_attr->index; | |
355 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
356 | return sprintf(buf, "%u\n", (data->alarms & nr) ? 1 : 0); | |
357 | } | |
358 | ||
359 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 0x0010); | |
360 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0x0020); | |
361 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 0x0040); | |
362 | static SENSOR_DEVICE_ATTR(temp2_input_fault, S_IRUGO, show_alarm, NULL, 0x4000); | |
363 | static SENSOR_DEVICE_ATTR(temp3_input_fault, S_IRUGO, show_alarm, NULL, 0x8000); | |
364 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0x0001); | |
365 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 0x0002); | |
366 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 0x0004); | |
367 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 0x0008); | |
368 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 0x0100); | |
369 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 0x0200); | |
370 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 0x0400); | |
371 | static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 0x0800); | |
372 | ||
373 | /* This function is called when: | |
374 | * smsc47m192_driver is inserted (when this module is loaded), for each | |
375 | available adapter | |
376 | * when a new adapter is inserted (and smsc47m192_driver is still present) */ | |
377 | static int smsc47m192_attach_adapter(struct i2c_adapter *adapter) | |
378 | { | |
379 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
380 | return 0; | |
381 | return i2c_probe(adapter, &addr_data, smsc47m192_detect); | |
382 | } | |
383 | ||
384 | static void smsc47m192_init_client(struct i2c_client *client) | |
385 | { | |
386 | int i; | |
387 | u8 config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG); | |
388 | u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR); | |
389 | ||
390 | /* select cycle mode (pause 1 sec between updates) */ | |
391 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR, | |
392 | (sfr & 0xfd) | 0x02); | |
393 | if (!(config & 0x01)) { | |
394 | /* initialize alarm limits */ | |
395 | for (i=0; i<8; i++) { | |
396 | i2c_smbus_write_byte_data(client, | |
397 | SMSC47M192_REG_IN_MIN(i), 0); | |
398 | i2c_smbus_write_byte_data(client, | |
399 | SMSC47M192_REG_IN_MAX(i), 0xff); | |
400 | } | |
401 | for (i=0; i<3; i++) { | |
402 | i2c_smbus_write_byte_data(client, | |
403 | SMSC47M192_REG_TEMP_MIN[i], 0x80); | |
404 | i2c_smbus_write_byte_data(client, | |
405 | SMSC47M192_REG_TEMP_MAX[i], 0x7f); | |
406 | } | |
407 | ||
408 | /* start monitoring */ | |
409 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_CONFIG, | |
410 | (config & 0xf7) | 0x01); | |
411 | } | |
412 | } | |
413 | ||
414 | /* This function is called by i2c_probe */ | |
415 | static int smsc47m192_detect(struct i2c_adapter *adapter, int address, | |
416 | int kind) | |
417 | { | |
418 | struct i2c_client *client; | |
419 | struct smsc47m192_data *data; | |
420 | int err = 0; | |
421 | int version, config; | |
422 | ||
423 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
424 | goto exit; | |
425 | ||
426 | if (!(data = kzalloc(sizeof(struct smsc47m192_data), GFP_KERNEL))) { | |
427 | err = -ENOMEM; | |
428 | goto exit; | |
429 | } | |
430 | ||
431 | client = &data->client; | |
432 | i2c_set_clientdata(client, data); | |
433 | client->addr = address; | |
434 | client->adapter = adapter; | |
435 | client->driver = &smsc47m192_driver; | |
436 | ||
437 | if (kind == 0) | |
438 | kind = smsc47m192; | |
439 | ||
440 | /* Detection criteria from sensors_detect script */ | |
441 | if (kind < 0) { | |
442 | if (i2c_smbus_read_byte_data(client, | |
443 | SMSC47M192_REG_COMPANY_ID) == 0x55 | |
444 | && ((version = i2c_smbus_read_byte_data(client, | |
445 | SMSC47M192_REG_VERSION)) & 0xf0) == 0x20 | |
446 | && (i2c_smbus_read_byte_data(client, | |
447 | SMSC47M192_REG_VID) & 0x70) == 0x00 | |
448 | && (i2c_smbus_read_byte_data(client, | |
449 | SMSC47M192_REG_VID4) & 0xfe) == 0x80) { | |
450 | dev_info(&adapter->dev, | |
451 | "found SMSC47M192 or SMSC47M997, " | |
452 | "version 2, stepping A%d\n", version & 0x0f); | |
453 | } else { | |
454 | dev_dbg(&adapter->dev, | |
455 | "SMSC47M192 detection failed at 0x%02x\n", | |
456 | address); | |
457 | goto exit_free; | |
458 | } | |
459 | } | |
460 | ||
461 | /* Fill in the remaining client fields and put into the global list */ | |
462 | strlcpy(client->name, "smsc47m192", I2C_NAME_SIZE); | |
463 | data->vrm = vid_which_vrm(); | |
464 | init_MUTEX(&data->update_lock); | |
465 | ||
466 | /* Tell the I2C layer a new client has arrived */ | |
467 | if ((err = i2c_attach_client(client))) | |
468 | goto exit_free; | |
469 | ||
470 | /* Initialize the SMSC47M192 chip */ | |
471 | smsc47m192_init_client(client); | |
472 | ||
473 | /* Register sysfs hooks */ | |
474 | data->class_dev = hwmon_device_register(&client->dev); | |
475 | if (IS_ERR(data->class_dev)) { | |
476 | err = PTR_ERR(data->class_dev); | |
477 | goto exit_detach; | |
478 | } | |
479 | ||
480 | device_create_file(&client->dev, &sensor_dev_attr_in0_input.dev_attr); | |
481 | device_create_file(&client->dev, &sensor_dev_attr_in0_min.dev_attr); | |
482 | device_create_file(&client->dev, &sensor_dev_attr_in0_max.dev_attr); | |
483 | device_create_file(&client->dev, &sensor_dev_attr_in0_alarm.dev_attr); | |
484 | device_create_file(&client->dev, &sensor_dev_attr_in1_input.dev_attr); | |
485 | device_create_file(&client->dev, &sensor_dev_attr_in1_min.dev_attr); | |
486 | device_create_file(&client->dev, &sensor_dev_attr_in1_max.dev_attr); | |
487 | device_create_file(&client->dev, &sensor_dev_attr_in1_alarm.dev_attr); | |
488 | device_create_file(&client->dev, &sensor_dev_attr_in2_input.dev_attr); | |
489 | device_create_file(&client->dev, &sensor_dev_attr_in2_min.dev_attr); | |
490 | device_create_file(&client->dev, &sensor_dev_attr_in2_max.dev_attr); | |
491 | device_create_file(&client->dev, &sensor_dev_attr_in2_alarm.dev_attr); | |
492 | device_create_file(&client->dev, &sensor_dev_attr_in3_input.dev_attr); | |
493 | device_create_file(&client->dev, &sensor_dev_attr_in3_min.dev_attr); | |
494 | device_create_file(&client->dev, &sensor_dev_attr_in3_max.dev_attr); | |
495 | device_create_file(&client->dev, &sensor_dev_attr_in3_alarm.dev_attr); | |
496 | ||
497 | /* Pin 110 is either in4 (+12V) or VID4 */ | |
498 | config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG); | |
499 | if (!(config & 0x20)) { | |
500 | device_create_file(&client->dev, | |
501 | &sensor_dev_attr_in4_input.dev_attr); | |
502 | device_create_file(&client->dev, | |
503 | &sensor_dev_attr_in4_min.dev_attr); | |
504 | device_create_file(&client->dev, | |
505 | &sensor_dev_attr_in4_max.dev_attr); | |
506 | device_create_file(&client->dev, | |
507 | &sensor_dev_attr_in4_alarm.dev_attr); | |
508 | } | |
509 | device_create_file(&client->dev, &sensor_dev_attr_in5_input.dev_attr); | |
510 | device_create_file(&client->dev, &sensor_dev_attr_in5_min.dev_attr); | |
511 | device_create_file(&client->dev, &sensor_dev_attr_in5_max.dev_attr); | |
512 | device_create_file(&client->dev, &sensor_dev_attr_in5_alarm.dev_attr); | |
513 | device_create_file(&client->dev, &sensor_dev_attr_in6_input.dev_attr); | |
514 | device_create_file(&client->dev, &sensor_dev_attr_in6_min.dev_attr); | |
515 | device_create_file(&client->dev, &sensor_dev_attr_in6_max.dev_attr); | |
516 | device_create_file(&client->dev, &sensor_dev_attr_in6_alarm.dev_attr); | |
517 | device_create_file(&client->dev, &sensor_dev_attr_in7_input.dev_attr); | |
518 | device_create_file(&client->dev, &sensor_dev_attr_in7_min.dev_attr); | |
519 | device_create_file(&client->dev, &sensor_dev_attr_in7_max.dev_attr); | |
520 | device_create_file(&client->dev, &sensor_dev_attr_in7_alarm.dev_attr); | |
521 | device_create_file(&client->dev, &sensor_dev_attr_temp1_input.dev_attr); | |
522 | device_create_file(&client->dev, &sensor_dev_attr_temp1_max.dev_attr); | |
523 | device_create_file(&client->dev, &sensor_dev_attr_temp1_min.dev_attr); | |
524 | device_create_file(&client->dev, | |
525 | &sensor_dev_attr_temp1_offset.dev_attr); | |
526 | device_create_file(&client->dev, &sensor_dev_attr_temp1_alarm.dev_attr); | |
527 | device_create_file(&client->dev, &sensor_dev_attr_temp2_input.dev_attr); | |
528 | device_create_file(&client->dev, &sensor_dev_attr_temp2_max.dev_attr); | |
529 | device_create_file(&client->dev, &sensor_dev_attr_temp2_min.dev_attr); | |
530 | device_create_file(&client->dev, | |
531 | &sensor_dev_attr_temp2_offset.dev_attr); | |
532 | device_create_file(&client->dev, &sensor_dev_attr_temp2_alarm.dev_attr); | |
533 | device_create_file(&client->dev, | |
534 | &sensor_dev_attr_temp2_input_fault.dev_attr); | |
535 | device_create_file(&client->dev, &sensor_dev_attr_temp3_input.dev_attr); | |
536 | device_create_file(&client->dev, &sensor_dev_attr_temp3_max.dev_attr); | |
537 | device_create_file(&client->dev, &sensor_dev_attr_temp3_min.dev_attr); | |
538 | device_create_file(&client->dev, | |
539 | &sensor_dev_attr_temp3_offset.dev_attr); | |
540 | device_create_file(&client->dev, &sensor_dev_attr_temp3_alarm.dev_attr); | |
541 | device_create_file(&client->dev, | |
542 | &sensor_dev_attr_temp3_input_fault.dev_attr); | |
543 | device_create_file(&client->dev, &dev_attr_cpu0_vid); | |
544 | device_create_file(&client->dev, &dev_attr_vrm); | |
545 | ||
546 | return 0; | |
547 | ||
548 | exit_detach: | |
549 | i2c_detach_client(client); | |
550 | exit_free: | |
551 | kfree(data); | |
552 | exit: | |
553 | return err; | |
554 | } | |
555 | ||
556 | static int smsc47m192_detach_client(struct i2c_client *client) | |
557 | { | |
558 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
559 | int err; | |
560 | ||
561 | hwmon_device_unregister(data->class_dev); | |
562 | ||
563 | if ((err = i2c_detach_client(client))) | |
564 | return err; | |
565 | ||
566 | kfree(data); | |
567 | ||
568 | return 0; | |
569 | } | |
570 | ||
571 | static struct smsc47m192_data *smsc47m192_update_device(struct device *dev) | |
572 | { | |
573 | struct i2c_client *client = to_i2c_client(dev); | |
574 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
575 | int i, config; | |
576 | ||
577 | down(&data->update_lock); | |
578 | ||
579 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
580 | || !data->valid) { | |
581 | u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR); | |
582 | ||
583 | dev_dbg(&client->dev, "Starting smsc47m192 update\n"); | |
584 | ||
585 | for (i = 0; i <= 7; i++) { | |
586 | data->in[i] = i2c_smbus_read_byte_data(client, | |
587 | SMSC47M192_REG_IN(i)); | |
588 | data->in_min[i] = i2c_smbus_read_byte_data(client, | |
589 | SMSC47M192_REG_IN_MIN(i)); | |
590 | data->in_max[i] = i2c_smbus_read_byte_data(client, | |
591 | SMSC47M192_REG_IN_MAX(i)); | |
592 | } | |
593 | for (i = 0; i < 3; i++) { | |
594 | data->temp[i] = i2c_smbus_read_byte_data(client, | |
595 | SMSC47M192_REG_TEMP[i]); | |
596 | data->temp_max[i] = i2c_smbus_read_byte_data(client, | |
597 | SMSC47M192_REG_TEMP_MAX[i]); | |
598 | data->temp_min[i] = i2c_smbus_read_byte_data(client, | |
599 | SMSC47M192_REG_TEMP_MIN[i]); | |
600 | } | |
601 | for (i = 1; i < 3; i++) | |
602 | data->temp_offset[i] = i2c_smbus_read_byte_data(client, | |
603 | SMSC47M192_REG_TEMP_OFFSET(i)); | |
604 | /* first offset is temp_offset[0] if SFR bit 4 is set, | |
605 | temp_offset[1] otherwise */ | |
606 | if (sfr & 0x10) { | |
607 | data->temp_offset[0] = data->temp_offset[1]; | |
608 | data->temp_offset[1] = 0; | |
609 | } else | |
610 | data->temp_offset[0] = 0; | |
611 | ||
612 | data->vid = i2c_smbus_read_byte_data(client, SMSC47M192_REG_VID) | |
613 | & 0x0f; | |
614 | config = i2c_smbus_read_byte_data(client, | |
615 | SMSC47M192_REG_CONFIG); | |
616 | if (config & 0x20) | |
617 | data->vid |= (i2c_smbus_read_byte_data(client, | |
618 | SMSC47M192_REG_VID4) & 0x01) << 4; | |
619 | data->alarms = i2c_smbus_read_byte_data(client, | |
620 | SMSC47M192_REG_ALARM1) | | |
621 | (i2c_smbus_read_byte_data(client, | |
622 | SMSC47M192_REG_ALARM2) << 8); | |
623 | ||
624 | data->last_updated = jiffies; | |
625 | data->valid = 1; | |
626 | } | |
627 | ||
628 | up(&data->update_lock); | |
629 | ||
630 | return data; | |
631 | } | |
632 | ||
633 | static int __init smsc47m192_init(void) | |
634 | { | |
635 | return i2c_add_driver(&smsc47m192_driver); | |
636 | } | |
637 | ||
638 | static void __exit smsc47m192_exit(void) | |
639 | { | |
640 | i2c_del_driver(&smsc47m192_driver); | |
641 | } | |
642 | ||
643 | MODULE_AUTHOR("Hartmut Rick <linux@rick.claranet.de>"); | |
644 | MODULE_DESCRIPTION("SMSC47M192 driver"); | |
645 | MODULE_LICENSE("GPL"); | |
646 | ||
647 | module_init(smsc47m192_init); | |
648 | module_exit(smsc47m192_exit); |