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59ac8367 HR |
1 | /* |
2 | smsc47m192.c - Support for hardware monitoring block of | |
00cb4739 | 3 | SMSC LPC47M192 and compatible Super I/O chips |
59ac8367 HR |
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> | |
ce8c6ce1 | 33 | #include <linux/sysfs.h> |
e4a7167f | 34 | #include <linux/mutex.h> |
59ac8367 HR |
35 | |
36 | /* Addresses to scan */ | |
25e9c86d | 37 | static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; |
59ac8367 | 38 | |
59ac8367 HR |
39 | /* SMSC47M192 registers */ |
40 | #define SMSC47M192_REG_IN(nr) ((nr)<6 ? (0x20 + (nr)) : \ | |
41 | (0x50 + (nr) - 6)) | |
42 | #define SMSC47M192_REG_IN_MAX(nr) ((nr)<6 ? (0x2b + (nr) * 2) : \ | |
43 | (0x54 + (((nr) - 6) * 2))) | |
44 | #define SMSC47M192_REG_IN_MIN(nr) ((nr)<6 ? (0x2c + (nr) * 2) : \ | |
45 | (0x55 + (((nr) - 6) * 2))) | |
46 | static u8 SMSC47M192_REG_TEMP[3] = { 0x27, 0x26, 0x52 }; | |
47 | static u8 SMSC47M192_REG_TEMP_MAX[3] = { 0x39, 0x37, 0x58 }; | |
48 | static u8 SMSC47M192_REG_TEMP_MIN[3] = { 0x3A, 0x38, 0x59 }; | |
49 | #define SMSC47M192_REG_TEMP_OFFSET(nr) ((nr)==2 ? 0x1e : 0x1f) | |
50 | #define SMSC47M192_REG_ALARM1 0x41 | |
51 | #define SMSC47M192_REG_ALARM2 0x42 | |
52 | #define SMSC47M192_REG_VID 0x47 | |
53 | #define SMSC47M192_REG_VID4 0x49 | |
54 | #define SMSC47M192_REG_CONFIG 0x40 | |
55 | #define SMSC47M192_REG_SFR 0x4f | |
56 | #define SMSC47M192_REG_COMPANY_ID 0x3e | |
57 | #define SMSC47M192_REG_VERSION 0x3f | |
58 | ||
59 | /* generalised scaling with integer rounding */ | |
60 | static inline int SCALE(long val, int mul, int div) | |
61 | { | |
62 | if (val < 0) | |
63 | return (val * mul - div / 2) / div; | |
64 | else | |
65 | return (val * mul + div / 2) / div; | |
66 | } | |
67 | ||
68 | /* Conversions */ | |
69 | ||
70 | /* smsc47m192 internally scales voltage measurements */ | |
71 | static const u16 nom_mv[] = { 2500, 2250, 3300, 5000, 12000, 3300, 1500, 1800 }; | |
72 | ||
73 | static inline unsigned int IN_FROM_REG(u8 reg, int n) | |
74 | { | |
75 | return SCALE(reg, nom_mv[n], 192); | |
76 | } | |
77 | ||
78 | static inline u8 IN_TO_REG(unsigned long val, int n) | |
79 | { | |
80 | return SENSORS_LIMIT(SCALE(val, 192, nom_mv[n]), 0, 255); | |
81 | } | |
82 | ||
83 | /* TEMP: 0.001 degC units (-128C to +127C) | |
84 | REG: 1C/bit, two's complement */ | |
85 | static inline s8 TEMP_TO_REG(int val) | |
86 | { | |
87 | return SENSORS_LIMIT(SCALE(val, 1, 1000), -128000, 127000); | |
88 | } | |
89 | ||
90 | static inline int TEMP_FROM_REG(s8 val) | |
91 | { | |
92 | return val * 1000; | |
93 | } | |
94 | ||
95 | struct smsc47m192_data { | |
1beeffe4 | 96 | struct device *hwmon_dev; |
e4a7167f | 97 | struct mutex update_lock; |
59ac8367 HR |
98 | char valid; /* !=0 if following fields are valid */ |
99 | unsigned long last_updated; /* In jiffies */ | |
100 | ||
101 | u8 in[8]; /* Register value */ | |
102 | u8 in_max[8]; /* Register value */ | |
103 | u8 in_min[8]; /* Register value */ | |
104 | s8 temp[3]; /* Register value */ | |
105 | s8 temp_max[3]; /* Register value */ | |
106 | s8 temp_min[3]; /* Register value */ | |
107 | s8 temp_offset[3]; /* Register value */ | |
108 | u16 alarms; /* Register encoding, combined */ | |
109 | u8 vid; /* Register encoding, combined */ | |
110 | u8 vrm; | |
111 | }; | |
112 | ||
8fb597bb JD |
113 | static int smsc47m192_probe(struct i2c_client *client, |
114 | const struct i2c_device_id *id); | |
310ec792 | 115 | static int smsc47m192_detect(struct i2c_client *client, |
8fb597bb JD |
116 | struct i2c_board_info *info); |
117 | static int smsc47m192_remove(struct i2c_client *client); | |
59ac8367 HR |
118 | static struct smsc47m192_data *smsc47m192_update_device(struct device *dev); |
119 | ||
8fb597bb | 120 | static const struct i2c_device_id smsc47m192_id[] = { |
1f86df49 | 121 | { "smsc47m192", 0 }, |
8fb597bb JD |
122 | { } |
123 | }; | |
124 | MODULE_DEVICE_TABLE(i2c, smsc47m192_id); | |
125 | ||
59ac8367 | 126 | static struct i2c_driver smsc47m192_driver = { |
8fb597bb | 127 | .class = I2C_CLASS_HWMON, |
59ac8367 HR |
128 | .driver = { |
129 | .name = "smsc47m192", | |
130 | }, | |
8fb597bb JD |
131 | .probe = smsc47m192_probe, |
132 | .remove = smsc47m192_remove, | |
133 | .id_table = smsc47m192_id, | |
134 | .detect = smsc47m192_detect, | |
c3813d6a | 135 | .address_list = normal_i2c, |
59ac8367 HR |
136 | }; |
137 | ||
138 | /* Voltages */ | |
139 | static ssize_t show_in(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[nr], nr)); | |
146 | } | |
147 | ||
148 | static ssize_t show_in_min(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_min[nr], nr)); | |
155 | } | |
156 | ||
157 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, | |
158 | char *buf) | |
159 | { | |
160 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
161 | int nr = sensor_attr->index; | |
162 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
163 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr], nr)); | |
164 | } | |
165 | ||
166 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, | |
167 | const char *buf, size_t count) | |
168 | { | |
169 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
170 | int nr = sensor_attr->index; | |
171 | struct i2c_client *client = to_i2c_client(dev); | |
172 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
173 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
174 | ||
e4a7167f | 175 | mutex_lock(&data->update_lock); |
59ac8367 HR |
176 | data->in_min[nr] = IN_TO_REG(val, nr); |
177 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MIN(nr), | |
178 | data->in_min[nr]); | |
e4a7167f | 179 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
180 | return count; |
181 | } | |
182 | ||
183 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, | |
184 | const char *buf, size_t count) | |
185 | { | |
186 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
187 | int nr = sensor_attr->index; | |
188 | struct i2c_client *client = to_i2c_client(dev); | |
189 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
190 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
191 | ||
e4a7167f | 192 | mutex_lock(&data->update_lock); |
59ac8367 HR |
193 | data->in_max[nr] = IN_TO_REG(val, nr); |
194 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MAX(nr), | |
195 | data->in_max[nr]); | |
e4a7167f | 196 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
197 | return count; |
198 | } | |
199 | ||
200 | #define show_in_offset(offset) \ | |
201 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ | |
202 | show_in, NULL, offset); \ | |
203 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
204 | show_in_min, set_in_min, offset); \ | |
205 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
206 | show_in_max, set_in_max, offset); | |
207 | ||
208 | show_in_offset(0) | |
209 | show_in_offset(1) | |
210 | show_in_offset(2) | |
211 | show_in_offset(3) | |
212 | show_in_offset(4) | |
213 | show_in_offset(5) | |
214 | show_in_offset(6) | |
215 | show_in_offset(7) | |
216 | ||
217 | /* Temperatures */ | |
218 | static ssize_t show_temp(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[nr])); | |
225 | } | |
226 | ||
227 | static ssize_t show_temp_min(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_min[nr])); | |
234 | } | |
235 | ||
236 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, | |
237 | char *buf) | |
238 | { | |
239 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
240 | int nr = sensor_attr->index; | |
241 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
242 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr])); | |
243 | } | |
244 | ||
245 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, | |
246 | const char *buf, size_t count) | |
247 | { | |
248 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
249 | int nr = sensor_attr->index; | |
250 | struct i2c_client *client = to_i2c_client(dev); | |
251 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
252 | long val = simple_strtol(buf, NULL, 10); | |
253 | ||
e4a7167f | 254 | mutex_lock(&data->update_lock); |
59ac8367 HR |
255 | data->temp_min[nr] = TEMP_TO_REG(val); |
256 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MIN[nr], | |
257 | data->temp_min[nr]); | |
e4a7167f | 258 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
259 | return count; |
260 | } | |
261 | ||
262 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, | |
263 | const char *buf, size_t count) | |
264 | { | |
265 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
266 | int nr = sensor_attr->index; | |
267 | struct i2c_client *client = to_i2c_client(dev); | |
268 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
269 | long val = simple_strtol(buf, NULL, 10); | |
270 | ||
e4a7167f | 271 | mutex_lock(&data->update_lock); |
59ac8367 HR |
272 | data->temp_max[nr] = TEMP_TO_REG(val); |
273 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MAX[nr], | |
274 | data->temp_max[nr]); | |
e4a7167f | 275 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
276 | return count; |
277 | } | |
278 | ||
279 | static ssize_t show_temp_offset(struct device *dev, struct device_attribute | |
280 | *attr, char *buf) | |
281 | { | |
282 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
283 | int nr = sensor_attr->index; | |
284 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
285 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr])); | |
286 | } | |
287 | ||
288 | static ssize_t set_temp_offset(struct device *dev, struct device_attribute | |
289 | *attr, const char *buf, size_t count) | |
290 | { | |
291 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
292 | int nr = sensor_attr->index; | |
293 | struct i2c_client *client = to_i2c_client(dev); | |
294 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
295 | u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR); | |
296 | long val = simple_strtol(buf, NULL, 10); | |
297 | ||
e4a7167f | 298 | mutex_lock(&data->update_lock); |
59ac8367 HR |
299 | data->temp_offset[nr] = TEMP_TO_REG(val); |
300 | if (nr>1) | |
301 | i2c_smbus_write_byte_data(client, | |
302 | SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]); | |
303 | else if (data->temp_offset[nr] != 0) { | |
304 | /* offset[0] and offset[1] share the same register, | |
305 | SFR bit 4 activates offset[0] */ | |
306 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR, | |
307 | (sfr & 0xef) | (nr==0 ? 0x10 : 0)); | |
308 | data->temp_offset[1-nr] = 0; | |
309 | i2c_smbus_write_byte_data(client, | |
310 | SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]); | |
311 | } else if ((sfr & 0x10) == (nr==0 ? 0x10 : 0)) | |
312 | i2c_smbus_write_byte_data(client, | |
313 | SMSC47M192_REG_TEMP_OFFSET(nr), 0); | |
e4a7167f | 314 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
315 | return count; |
316 | } | |
317 | ||
318 | #define show_temp_index(index) \ | |
319 | static SENSOR_DEVICE_ATTR(temp##index##_input, S_IRUGO, \ | |
320 | show_temp, NULL, index-1); \ | |
321 | static SENSOR_DEVICE_ATTR(temp##index##_min, S_IRUGO | S_IWUSR, \ | |
322 | show_temp_min, set_temp_min, index-1); \ | |
323 | static SENSOR_DEVICE_ATTR(temp##index##_max, S_IRUGO | S_IWUSR, \ | |
324 | show_temp_max, set_temp_max, index-1); \ | |
325 | static SENSOR_DEVICE_ATTR(temp##index##_offset, S_IRUGO | S_IWUSR, \ | |
326 | show_temp_offset, set_temp_offset, index-1); | |
327 | ||
328 | show_temp_index(1) | |
329 | show_temp_index(2) | |
330 | show_temp_index(3) | |
331 | ||
332 | /* VID */ | |
333 | static ssize_t show_vid(struct device *dev, struct device_attribute *attr, | |
334 | char *buf) | |
335 | { | |
336 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
337 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); | |
338 | } | |
339 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); | |
340 | ||
341 | static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, | |
342 | char *buf) | |
343 | { | |
90d6619a | 344 | struct smsc47m192_data *data = dev_get_drvdata(dev); |
59ac8367 HR |
345 | return sprintf(buf, "%d\n", data->vrm); |
346 | } | |
347 | ||
348 | static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, | |
349 | const char *buf, size_t count) | |
350 | { | |
8f74efe8 | 351 | struct smsc47m192_data *data = dev_get_drvdata(dev); |
59ac8367 HR |
352 | data->vrm = simple_strtoul(buf, NULL, 10); |
353 | return count; | |
354 | } | |
355 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); | |
356 | ||
357 | /* Alarms */ | |
358 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, | |
359 | char *buf) | |
360 | { | |
361 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
362 | int nr = sensor_attr->index; | |
363 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
364 | return sprintf(buf, "%u\n", (data->alarms & nr) ? 1 : 0); | |
365 | } | |
366 | ||
367 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 0x0010); | |
368 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0x0020); | |
369 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 0x0040); | |
7817a39e JD |
370 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 0x4000); |
371 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 0x8000); | |
59ac8367 HR |
372 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0x0001); |
373 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 0x0002); | |
374 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 0x0004); | |
375 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 0x0008); | |
376 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 0x0100); | |
377 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 0x0200); | |
378 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 0x0400); | |
379 | static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 0x0800); | |
380 | ||
ce8c6ce1 JD |
381 | static struct attribute *smsc47m192_attributes[] = { |
382 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
383 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
384 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
385 | &sensor_dev_attr_in0_alarm.dev_attr.attr, | |
386 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
387 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
388 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
389 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
390 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
391 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
392 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
393 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
394 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
395 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
396 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
397 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
398 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
399 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
400 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
401 | &sensor_dev_attr_in5_alarm.dev_attr.attr, | |
402 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
403 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
404 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
405 | &sensor_dev_attr_in6_alarm.dev_attr.attr, | |
406 | &sensor_dev_attr_in7_input.dev_attr.attr, | |
407 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
408 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
409 | &sensor_dev_attr_in7_alarm.dev_attr.attr, | |
410 | ||
411 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
412 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
413 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
414 | &sensor_dev_attr_temp1_offset.dev_attr.attr, | |
415 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, | |
416 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
417 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
418 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
419 | &sensor_dev_attr_temp2_offset.dev_attr.attr, | |
420 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
7817a39e | 421 | &sensor_dev_attr_temp2_fault.dev_attr.attr, |
ce8c6ce1 JD |
422 | &sensor_dev_attr_temp3_input.dev_attr.attr, |
423 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
424 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
425 | &sensor_dev_attr_temp3_offset.dev_attr.attr, | |
426 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
7817a39e | 427 | &sensor_dev_attr_temp3_fault.dev_attr.attr, |
ce8c6ce1 JD |
428 | |
429 | &dev_attr_cpu0_vid.attr, | |
430 | &dev_attr_vrm.attr, | |
431 | NULL | |
432 | }; | |
433 | ||
434 | static const struct attribute_group smsc47m192_group = { | |
435 | .attrs = smsc47m192_attributes, | |
436 | }; | |
437 | ||
438 | static struct attribute *smsc47m192_attributes_in4[] = { | |
439 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
440 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
441 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
442 | &sensor_dev_attr_in4_alarm.dev_attr.attr, | |
443 | NULL | |
444 | }; | |
445 | ||
446 | static const struct attribute_group smsc47m192_group_in4 = { | |
447 | .attrs = smsc47m192_attributes_in4, | |
448 | }; | |
449 | ||
59ac8367 HR |
450 | static void smsc47m192_init_client(struct i2c_client *client) |
451 | { | |
452 | int i; | |
453 | u8 config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG); | |
454 | u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR); | |
455 | ||
456 | /* select cycle mode (pause 1 sec between updates) */ | |
457 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR, | |
458 | (sfr & 0xfd) | 0x02); | |
459 | if (!(config & 0x01)) { | |
460 | /* initialize alarm limits */ | |
461 | for (i=0; i<8; i++) { | |
462 | i2c_smbus_write_byte_data(client, | |
463 | SMSC47M192_REG_IN_MIN(i), 0); | |
464 | i2c_smbus_write_byte_data(client, | |
465 | SMSC47M192_REG_IN_MAX(i), 0xff); | |
466 | } | |
467 | for (i=0; i<3; i++) { | |
468 | i2c_smbus_write_byte_data(client, | |
469 | SMSC47M192_REG_TEMP_MIN[i], 0x80); | |
470 | i2c_smbus_write_byte_data(client, | |
471 | SMSC47M192_REG_TEMP_MAX[i], 0x7f); | |
472 | } | |
473 | ||
474 | /* start monitoring */ | |
475 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_CONFIG, | |
476 | (config & 0xf7) | 0x01); | |
477 | } | |
478 | } | |
479 | ||
8fb597bb | 480 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 481 | static int smsc47m192_detect(struct i2c_client *client, |
8fb597bb | 482 | struct i2c_board_info *info) |
59ac8367 | 483 | { |
8fb597bb JD |
484 | struct i2c_adapter *adapter = client->adapter; |
485 | int version; | |
59ac8367 HR |
486 | |
487 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
8fb597bb | 488 | return -ENODEV; |
59ac8367 HR |
489 | |
490 | /* Detection criteria from sensors_detect script */ | |
52df6440 JD |
491 | version = i2c_smbus_read_byte_data(client, SMSC47M192_REG_VERSION); |
492 | if (i2c_smbus_read_byte_data(client, | |
59ac8367 | 493 | SMSC47M192_REG_COMPANY_ID) == 0x55 |
52df6440 JD |
494 | && (version & 0xf0) == 0x20 |
495 | && (i2c_smbus_read_byte_data(client, | |
59ac8367 | 496 | SMSC47M192_REG_VID) & 0x70) == 0x00 |
52df6440 | 497 | && (i2c_smbus_read_byte_data(client, |
59ac8367 | 498 | SMSC47M192_REG_VID4) & 0xfe) == 0x80) { |
52df6440 JD |
499 | dev_info(&adapter->dev, |
500 | "found SMSC47M192 or compatible, " | |
501 | "version 2, stepping A%d\n", version & 0x0f); | |
502 | } else { | |
503 | dev_dbg(&adapter->dev, | |
504 | "SMSC47M192 detection failed at 0x%02x\n", | |
505 | client->addr); | |
506 | return -ENODEV; | |
59ac8367 HR |
507 | } |
508 | ||
8fb597bb JD |
509 | strlcpy(info->type, "smsc47m192", I2C_NAME_SIZE); |
510 | ||
511 | return 0; | |
512 | } | |
513 | ||
514 | static int smsc47m192_probe(struct i2c_client *client, | |
515 | const struct i2c_device_id *id) | |
516 | { | |
517 | struct smsc47m192_data *data; | |
518 | int config; | |
519 | int err; | |
520 | ||
521 | data = kzalloc(sizeof(struct smsc47m192_data), GFP_KERNEL); | |
522 | if (!data) { | |
523 | err = -ENOMEM; | |
524 | goto exit; | |
525 | } | |
526 | ||
527 | i2c_set_clientdata(client, data); | |
59ac8367 | 528 | data->vrm = vid_which_vrm(); |
e4a7167f | 529 | mutex_init(&data->update_lock); |
59ac8367 | 530 | |
59ac8367 HR |
531 | /* Initialize the SMSC47M192 chip */ |
532 | smsc47m192_init_client(client); | |
533 | ||
534 | /* Register sysfs hooks */ | |
ce8c6ce1 | 535 | if ((err = sysfs_create_group(&client->dev.kobj, &smsc47m192_group))) |
8fb597bb | 536 | goto exit_free; |
59ac8367 HR |
537 | |
538 | /* Pin 110 is either in4 (+12V) or VID4 */ | |
539 | config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG); | |
540 | if (!(config & 0x20)) { | |
ce8c6ce1 JD |
541 | if ((err = sysfs_create_group(&client->dev.kobj, |
542 | &smsc47m192_group_in4))) | |
543 | goto exit_remove_files; | |
544 | } | |
545 | ||
1beeffe4 TJ |
546 | data->hwmon_dev = hwmon_device_register(&client->dev); |
547 | if (IS_ERR(data->hwmon_dev)) { | |
548 | err = PTR_ERR(data->hwmon_dev); | |
ce8c6ce1 | 549 | goto exit_remove_files; |
59ac8367 | 550 | } |
59ac8367 HR |
551 | |
552 | return 0; | |
553 | ||
ce8c6ce1 JD |
554 | exit_remove_files: |
555 | sysfs_remove_group(&client->dev.kobj, &smsc47m192_group); | |
556 | sysfs_remove_group(&client->dev.kobj, &smsc47m192_group_in4); | |
59ac8367 HR |
557 | exit_free: |
558 | kfree(data); | |
559 | exit: | |
560 | return err; | |
561 | } | |
562 | ||
8fb597bb | 563 | static int smsc47m192_remove(struct i2c_client *client) |
59ac8367 HR |
564 | { |
565 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
59ac8367 | 566 | |
1beeffe4 | 567 | hwmon_device_unregister(data->hwmon_dev); |
ce8c6ce1 JD |
568 | sysfs_remove_group(&client->dev.kobj, &smsc47m192_group); |
569 | sysfs_remove_group(&client->dev.kobj, &smsc47m192_group_in4); | |
59ac8367 | 570 | |
59ac8367 HR |
571 | kfree(data); |
572 | ||
573 | return 0; | |
574 | } | |
575 | ||
576 | static struct smsc47m192_data *smsc47m192_update_device(struct device *dev) | |
577 | { | |
578 | struct i2c_client *client = to_i2c_client(dev); | |
579 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
580 | int i, config; | |
581 | ||
e4a7167f | 582 | mutex_lock(&data->update_lock); |
59ac8367 HR |
583 | |
584 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
585 | || !data->valid) { | |
586 | u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR); | |
587 | ||
588 | dev_dbg(&client->dev, "Starting smsc47m192 update\n"); | |
589 | ||
590 | for (i = 0; i <= 7; i++) { | |
591 | data->in[i] = i2c_smbus_read_byte_data(client, | |
592 | SMSC47M192_REG_IN(i)); | |
593 | data->in_min[i] = i2c_smbus_read_byte_data(client, | |
594 | SMSC47M192_REG_IN_MIN(i)); | |
595 | data->in_max[i] = i2c_smbus_read_byte_data(client, | |
596 | SMSC47M192_REG_IN_MAX(i)); | |
597 | } | |
598 | for (i = 0; i < 3; i++) { | |
599 | data->temp[i] = i2c_smbus_read_byte_data(client, | |
600 | SMSC47M192_REG_TEMP[i]); | |
601 | data->temp_max[i] = i2c_smbus_read_byte_data(client, | |
602 | SMSC47M192_REG_TEMP_MAX[i]); | |
603 | data->temp_min[i] = i2c_smbus_read_byte_data(client, | |
604 | SMSC47M192_REG_TEMP_MIN[i]); | |
605 | } | |
606 | for (i = 1; i < 3; i++) | |
607 | data->temp_offset[i] = i2c_smbus_read_byte_data(client, | |
608 | SMSC47M192_REG_TEMP_OFFSET(i)); | |
609 | /* first offset is temp_offset[0] if SFR bit 4 is set, | |
610 | temp_offset[1] otherwise */ | |
611 | if (sfr & 0x10) { | |
612 | data->temp_offset[0] = data->temp_offset[1]; | |
613 | data->temp_offset[1] = 0; | |
614 | } else | |
615 | data->temp_offset[0] = 0; | |
616 | ||
617 | data->vid = i2c_smbus_read_byte_data(client, SMSC47M192_REG_VID) | |
618 | & 0x0f; | |
619 | config = i2c_smbus_read_byte_data(client, | |
620 | SMSC47M192_REG_CONFIG); | |
621 | if (config & 0x20) | |
622 | data->vid |= (i2c_smbus_read_byte_data(client, | |
623 | SMSC47M192_REG_VID4) & 0x01) << 4; | |
624 | data->alarms = i2c_smbus_read_byte_data(client, | |
625 | SMSC47M192_REG_ALARM1) | | |
626 | (i2c_smbus_read_byte_data(client, | |
627 | SMSC47M192_REG_ALARM2) << 8); | |
628 | ||
629 | data->last_updated = jiffies; | |
630 | data->valid = 1; | |
631 | } | |
632 | ||
e4a7167f | 633 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
634 | |
635 | return data; | |
636 | } | |
637 | ||
638 | static int __init smsc47m192_init(void) | |
639 | { | |
640 | return i2c_add_driver(&smsc47m192_driver); | |
641 | } | |
642 | ||
643 | static void __exit smsc47m192_exit(void) | |
644 | { | |
645 | i2c_del_driver(&smsc47m192_driver); | |
646 | } | |
647 | ||
648 | MODULE_AUTHOR("Hartmut Rick <linux@rick.claranet.de>"); | |
649 | MODULE_DESCRIPTION("SMSC47M192 driver"); | |
650 | MODULE_LICENSE("GPL"); | |
651 | ||
652 | module_init(smsc47m192_init); | |
653 | module_exit(smsc47m192_exit); |