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59ac8367 | 1 | /* |
7cc3cb66 GR |
2 | * smsc47m192.c - Support for hardware monitoring block of |
3 | * SMSC LPC47M192 and compatible 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 | */ | |
59ac8367 HR |
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 | 39 | /* SMSC47M192 registers */ |
7cc3cb66 | 40 | #define SMSC47M192_REG_IN(nr) ((nr) < 6 ? (0x20 + (nr)) : \ |
59ac8367 | 41 | (0x50 + (nr) - 6)) |
7cc3cb66 | 42 | #define SMSC47M192_REG_IN_MAX(nr) ((nr) < 6 ? (0x2b + (nr) * 2) : \ |
59ac8367 | 43 | (0x54 + (((nr) - 6) * 2))) |
7cc3cb66 | 44 | #define SMSC47M192_REG_IN_MIN(nr) ((nr) < 6 ? (0x2c + (nr) * 2) : \ |
59ac8367 HR |
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 }; | |
7cc3cb66 | 49 | #define SMSC47M192_REG_TEMP_OFFSET(nr) ((nr) == 2 ? 0x1e : 0x1f) |
59ac8367 HR |
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 | { | |
2a844c14 | 80 | return clamp_val(SCALE(val, 192, nom_mv[n]), 0, 255); |
59ac8367 HR |
81 | } |
82 | ||
7cc3cb66 GR |
83 | /* |
84 | * TEMP: 0.001 degC units (-128C to +127C) | |
85 | * REG: 1C/bit, two's complement | |
86 | */ | |
59ac8367 HR |
87 | static inline s8 TEMP_TO_REG(int val) |
88 | { | |
2a844c14 | 89 | return clamp_val(SCALE(val, 1, 1000), -128000, 127000); |
59ac8367 HR |
90 | } |
91 | ||
92 | static inline int TEMP_FROM_REG(s8 val) | |
93 | { | |
94 | return val * 1000; | |
95 | } | |
96 | ||
97 | struct smsc47m192_data { | |
1beeffe4 | 98 | struct device *hwmon_dev; |
e4a7167f | 99 | struct mutex update_lock; |
59ac8367 HR |
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 | ||
8fb597bb JD |
115 | static int smsc47m192_probe(struct i2c_client *client, |
116 | const struct i2c_device_id *id); | |
310ec792 | 117 | static int smsc47m192_detect(struct i2c_client *client, |
8fb597bb JD |
118 | struct i2c_board_info *info); |
119 | static int smsc47m192_remove(struct i2c_client *client); | |
59ac8367 HR |
120 | static struct smsc47m192_data *smsc47m192_update_device(struct device *dev); |
121 | ||
8fb597bb | 122 | static const struct i2c_device_id smsc47m192_id[] = { |
1f86df49 | 123 | { "smsc47m192", 0 }, |
8fb597bb JD |
124 | { } |
125 | }; | |
126 | MODULE_DEVICE_TABLE(i2c, smsc47m192_id); | |
127 | ||
59ac8367 | 128 | static struct i2c_driver smsc47m192_driver = { |
8fb597bb | 129 | .class = I2C_CLASS_HWMON, |
59ac8367 HR |
130 | .driver = { |
131 | .name = "smsc47m192", | |
132 | }, | |
8fb597bb JD |
133 | .probe = smsc47m192_probe, |
134 | .remove = smsc47m192_remove, | |
135 | .id_table = smsc47m192_id, | |
136 | .detect = smsc47m192_detect, | |
c3813d6a | 137 | .address_list = normal_i2c, |
59ac8367 HR |
138 | }; |
139 | ||
140 | /* Voltages */ | |
141 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, | |
142 | char *buf) | |
143 | { | |
144 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
145 | int nr = sensor_attr->index; | |
146 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
147 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr], nr)); | |
148 | } | |
149 | ||
150 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, | |
151 | char *buf) | |
152 | { | |
153 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
154 | int nr = sensor_attr->index; | |
155 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
156 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr], nr)); | |
157 | } | |
158 | ||
159 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, | |
160 | char *buf) | |
161 | { | |
162 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
163 | int nr = sensor_attr->index; | |
164 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
165 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr], nr)); | |
166 | } | |
167 | ||
168 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, | |
169 | const char *buf, size_t count) | |
170 | { | |
171 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
172 | int nr = sensor_attr->index; | |
173 | struct i2c_client *client = to_i2c_client(dev); | |
174 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
7cc3cb66 GR |
175 | unsigned long val; |
176 | int err; | |
177 | ||
178 | err = kstrtoul(buf, 10, &val); | |
179 | if (err) | |
180 | return err; | |
59ac8367 | 181 | |
e4a7167f | 182 | mutex_lock(&data->update_lock); |
59ac8367 HR |
183 | data->in_min[nr] = IN_TO_REG(val, nr); |
184 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MIN(nr), | |
185 | data->in_min[nr]); | |
e4a7167f | 186 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
187 | return count; |
188 | } | |
189 | ||
190 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, | |
191 | const char *buf, size_t count) | |
192 | { | |
193 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
194 | int nr = sensor_attr->index; | |
195 | struct i2c_client *client = to_i2c_client(dev); | |
196 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
7cc3cb66 GR |
197 | unsigned long val; |
198 | int err; | |
199 | ||
200 | err = kstrtoul(buf, 10, &val); | |
201 | if (err) | |
202 | return err; | |
59ac8367 | 203 | |
e4a7167f | 204 | mutex_lock(&data->update_lock); |
59ac8367 HR |
205 | data->in_max[nr] = IN_TO_REG(val, nr); |
206 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MAX(nr), | |
207 | data->in_max[nr]); | |
e4a7167f | 208 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
209 | return count; |
210 | } | |
211 | ||
212 | #define show_in_offset(offset) \ | |
213 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ | |
214 | show_in, NULL, offset); \ | |
215 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
216 | show_in_min, set_in_min, offset); \ | |
217 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
218 | show_in_max, set_in_max, offset); | |
219 | ||
220 | show_in_offset(0) | |
221 | show_in_offset(1) | |
222 | show_in_offset(2) | |
223 | show_in_offset(3) | |
224 | show_in_offset(4) | |
225 | show_in_offset(5) | |
226 | show_in_offset(6) | |
227 | show_in_offset(7) | |
228 | ||
229 | /* Temperatures */ | |
230 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, | |
231 | char *buf) | |
232 | { | |
233 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
234 | int nr = sensor_attr->index; | |
235 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
236 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
237 | } | |
238 | ||
239 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, | |
240 | char *buf) | |
241 | { | |
242 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
243 | int nr = sensor_attr->index; | |
244 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
245 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr])); | |
246 | } | |
247 | ||
248 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, | |
249 | char *buf) | |
250 | { | |
251 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
252 | int nr = sensor_attr->index; | |
253 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
254 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr])); | |
255 | } | |
256 | ||
257 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, | |
258 | const char *buf, size_t count) | |
259 | { | |
260 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
261 | int nr = sensor_attr->index; | |
262 | struct i2c_client *client = to_i2c_client(dev); | |
263 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
7cc3cb66 GR |
264 | long val; |
265 | int err; | |
266 | ||
267 | err = kstrtol(buf, 10, &val); | |
268 | if (err) | |
269 | return err; | |
59ac8367 | 270 | |
e4a7167f | 271 | mutex_lock(&data->update_lock); |
59ac8367 HR |
272 | data->temp_min[nr] = TEMP_TO_REG(val); |
273 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MIN[nr], | |
274 | data->temp_min[nr]); | |
e4a7167f | 275 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
276 | return count; |
277 | } | |
278 | ||
279 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, | |
280 | 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); | |
7cc3cb66 GR |
286 | long val; |
287 | int err; | |
288 | ||
289 | err = kstrtol(buf, 10, &val); | |
290 | if (err) | |
291 | return err; | |
59ac8367 | 292 | |
e4a7167f | 293 | mutex_lock(&data->update_lock); |
59ac8367 HR |
294 | data->temp_max[nr] = TEMP_TO_REG(val); |
295 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MAX[nr], | |
296 | data->temp_max[nr]); | |
e4a7167f | 297 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
298 | return count; |
299 | } | |
300 | ||
301 | static ssize_t show_temp_offset(struct device *dev, struct device_attribute | |
302 | *attr, char *buf) | |
303 | { | |
304 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
305 | int nr = sensor_attr->index; | |
306 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
307 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr])); | |
308 | } | |
309 | ||
310 | static ssize_t set_temp_offset(struct device *dev, struct device_attribute | |
311 | *attr, const char *buf, size_t count) | |
312 | { | |
313 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
314 | int nr = sensor_attr->index; | |
315 | struct i2c_client *client = to_i2c_client(dev); | |
316 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
317 | u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR); | |
7cc3cb66 GR |
318 | long val; |
319 | int err; | |
320 | ||
321 | err = kstrtol(buf, 10, &val); | |
322 | if (err) | |
323 | return err; | |
59ac8367 | 324 | |
e4a7167f | 325 | mutex_lock(&data->update_lock); |
59ac8367 | 326 | data->temp_offset[nr] = TEMP_TO_REG(val); |
7cc3cb66 | 327 | if (nr > 1) |
59ac8367 HR |
328 | i2c_smbus_write_byte_data(client, |
329 | SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]); | |
330 | else if (data->temp_offset[nr] != 0) { | |
7cc3cb66 GR |
331 | /* |
332 | * offset[0] and offset[1] share the same register, | |
333 | * SFR bit 4 activates offset[0] | |
334 | */ | |
59ac8367 | 335 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR, |
7cc3cb66 | 336 | (sfr & 0xef) | (nr == 0 ? 0x10 : 0)); |
59ac8367 HR |
337 | data->temp_offset[1-nr] = 0; |
338 | i2c_smbus_write_byte_data(client, | |
339 | SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]); | |
7cc3cb66 | 340 | } else if ((sfr & 0x10) == (nr == 0 ? 0x10 : 0)) |
59ac8367 HR |
341 | i2c_smbus_write_byte_data(client, |
342 | SMSC47M192_REG_TEMP_OFFSET(nr), 0); | |
e4a7167f | 343 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
344 | return count; |
345 | } | |
346 | ||
347 | #define show_temp_index(index) \ | |
348 | static SENSOR_DEVICE_ATTR(temp##index##_input, S_IRUGO, \ | |
349 | show_temp, NULL, index-1); \ | |
350 | static SENSOR_DEVICE_ATTR(temp##index##_min, S_IRUGO | S_IWUSR, \ | |
351 | show_temp_min, set_temp_min, index-1); \ | |
352 | static SENSOR_DEVICE_ATTR(temp##index##_max, S_IRUGO | S_IWUSR, \ | |
353 | show_temp_max, set_temp_max, index-1); \ | |
354 | static SENSOR_DEVICE_ATTR(temp##index##_offset, S_IRUGO | S_IWUSR, \ | |
355 | show_temp_offset, set_temp_offset, index-1); | |
356 | ||
357 | show_temp_index(1) | |
358 | show_temp_index(2) | |
359 | show_temp_index(3) | |
360 | ||
361 | /* VID */ | |
362 | static ssize_t show_vid(struct device *dev, struct device_attribute *attr, | |
363 | char *buf) | |
364 | { | |
365 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
366 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); | |
367 | } | |
368 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); | |
369 | ||
370 | static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, | |
371 | char *buf) | |
372 | { | |
90d6619a | 373 | struct smsc47m192_data *data = dev_get_drvdata(dev); |
59ac8367 HR |
374 | return sprintf(buf, "%d\n", data->vrm); |
375 | } | |
376 | ||
377 | static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, | |
378 | const char *buf, size_t count) | |
379 | { | |
8f74efe8 | 380 | struct smsc47m192_data *data = dev_get_drvdata(dev); |
7cc3cb66 GR |
381 | unsigned long val; |
382 | int err; | |
383 | ||
384 | err = kstrtoul(buf, 10, &val); | |
385 | if (err) | |
386 | return err; | |
387 | ||
388 | data->vrm = val; | |
59ac8367 HR |
389 | return count; |
390 | } | |
391 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); | |
392 | ||
393 | /* Alarms */ | |
394 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, | |
395 | char *buf) | |
396 | { | |
397 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
398 | int nr = sensor_attr->index; | |
399 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
400 | return sprintf(buf, "%u\n", (data->alarms & nr) ? 1 : 0); | |
401 | } | |
402 | ||
403 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 0x0010); | |
404 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0x0020); | |
405 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 0x0040); | |
7817a39e JD |
406 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 0x4000); |
407 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 0x8000); | |
59ac8367 HR |
408 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0x0001); |
409 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 0x0002); | |
410 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 0x0004); | |
411 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 0x0008); | |
412 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 0x0100); | |
413 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 0x0200); | |
414 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 0x0400); | |
415 | static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 0x0800); | |
416 | ||
ce8c6ce1 JD |
417 | static struct attribute *smsc47m192_attributes[] = { |
418 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
419 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
420 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
421 | &sensor_dev_attr_in0_alarm.dev_attr.attr, | |
422 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
423 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
424 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
425 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
426 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
427 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
428 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
429 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
430 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
431 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
432 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
433 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
434 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
435 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
436 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
437 | &sensor_dev_attr_in5_alarm.dev_attr.attr, | |
438 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
439 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
440 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
441 | &sensor_dev_attr_in6_alarm.dev_attr.attr, | |
442 | &sensor_dev_attr_in7_input.dev_attr.attr, | |
443 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
444 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
445 | &sensor_dev_attr_in7_alarm.dev_attr.attr, | |
446 | ||
447 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
448 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
449 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
450 | &sensor_dev_attr_temp1_offset.dev_attr.attr, | |
451 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, | |
452 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
453 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
454 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
455 | &sensor_dev_attr_temp2_offset.dev_attr.attr, | |
456 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
7817a39e | 457 | &sensor_dev_attr_temp2_fault.dev_attr.attr, |
ce8c6ce1 JD |
458 | &sensor_dev_attr_temp3_input.dev_attr.attr, |
459 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
460 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
461 | &sensor_dev_attr_temp3_offset.dev_attr.attr, | |
462 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
7817a39e | 463 | &sensor_dev_attr_temp3_fault.dev_attr.attr, |
ce8c6ce1 JD |
464 | |
465 | &dev_attr_cpu0_vid.attr, | |
466 | &dev_attr_vrm.attr, | |
467 | NULL | |
468 | }; | |
469 | ||
470 | static const struct attribute_group smsc47m192_group = { | |
471 | .attrs = smsc47m192_attributes, | |
472 | }; | |
473 | ||
474 | static struct attribute *smsc47m192_attributes_in4[] = { | |
475 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
476 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
477 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
478 | &sensor_dev_attr_in4_alarm.dev_attr.attr, | |
479 | NULL | |
480 | }; | |
481 | ||
482 | static const struct attribute_group smsc47m192_group_in4 = { | |
483 | .attrs = smsc47m192_attributes_in4, | |
484 | }; | |
485 | ||
59ac8367 HR |
486 | static void smsc47m192_init_client(struct i2c_client *client) |
487 | { | |
488 | int i; | |
489 | u8 config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG); | |
490 | u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR); | |
491 | ||
492 | /* select cycle mode (pause 1 sec between updates) */ | |
493 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR, | |
494 | (sfr & 0xfd) | 0x02); | |
495 | if (!(config & 0x01)) { | |
496 | /* initialize alarm limits */ | |
7cc3cb66 | 497 | for (i = 0; i < 8; i++) { |
59ac8367 HR |
498 | i2c_smbus_write_byte_data(client, |
499 | SMSC47M192_REG_IN_MIN(i), 0); | |
500 | i2c_smbus_write_byte_data(client, | |
501 | SMSC47M192_REG_IN_MAX(i), 0xff); | |
502 | } | |
7cc3cb66 | 503 | for (i = 0; i < 3; i++) { |
59ac8367 HR |
504 | i2c_smbus_write_byte_data(client, |
505 | SMSC47M192_REG_TEMP_MIN[i], 0x80); | |
506 | i2c_smbus_write_byte_data(client, | |
507 | SMSC47M192_REG_TEMP_MAX[i], 0x7f); | |
508 | } | |
509 | ||
510 | /* start monitoring */ | |
511 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_CONFIG, | |
512 | (config & 0xf7) | 0x01); | |
513 | } | |
514 | } | |
515 | ||
8fb597bb | 516 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 517 | static int smsc47m192_detect(struct i2c_client *client, |
8fb597bb | 518 | struct i2c_board_info *info) |
59ac8367 | 519 | { |
8fb597bb JD |
520 | struct i2c_adapter *adapter = client->adapter; |
521 | int version; | |
59ac8367 HR |
522 | |
523 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
8fb597bb | 524 | return -ENODEV; |
59ac8367 HR |
525 | |
526 | /* Detection criteria from sensors_detect script */ | |
52df6440 JD |
527 | version = i2c_smbus_read_byte_data(client, SMSC47M192_REG_VERSION); |
528 | if (i2c_smbus_read_byte_data(client, | |
59ac8367 | 529 | SMSC47M192_REG_COMPANY_ID) == 0x55 |
52df6440 JD |
530 | && (version & 0xf0) == 0x20 |
531 | && (i2c_smbus_read_byte_data(client, | |
59ac8367 | 532 | SMSC47M192_REG_VID) & 0x70) == 0x00 |
52df6440 | 533 | && (i2c_smbus_read_byte_data(client, |
59ac8367 | 534 | SMSC47M192_REG_VID4) & 0xfe) == 0x80) { |
52df6440 JD |
535 | dev_info(&adapter->dev, |
536 | "found SMSC47M192 or compatible, " | |
537 | "version 2, stepping A%d\n", version & 0x0f); | |
538 | } else { | |
539 | dev_dbg(&adapter->dev, | |
540 | "SMSC47M192 detection failed at 0x%02x\n", | |
541 | client->addr); | |
542 | return -ENODEV; | |
59ac8367 HR |
543 | } |
544 | ||
8fb597bb JD |
545 | strlcpy(info->type, "smsc47m192", I2C_NAME_SIZE); |
546 | ||
547 | return 0; | |
548 | } | |
549 | ||
550 | static int smsc47m192_probe(struct i2c_client *client, | |
551 | const struct i2c_device_id *id) | |
552 | { | |
553 | struct smsc47m192_data *data; | |
554 | int config; | |
555 | int err; | |
556 | ||
2625996b GR |
557 | data = devm_kzalloc(&client->dev, sizeof(struct smsc47m192_data), |
558 | GFP_KERNEL); | |
559 | if (!data) | |
560 | return -ENOMEM; | |
8fb597bb JD |
561 | |
562 | i2c_set_clientdata(client, data); | |
59ac8367 | 563 | data->vrm = vid_which_vrm(); |
e4a7167f | 564 | mutex_init(&data->update_lock); |
59ac8367 | 565 | |
59ac8367 HR |
566 | /* Initialize the SMSC47M192 chip */ |
567 | smsc47m192_init_client(client); | |
568 | ||
569 | /* Register sysfs hooks */ | |
7cc3cb66 GR |
570 | err = sysfs_create_group(&client->dev.kobj, &smsc47m192_group); |
571 | if (err) | |
2625996b | 572 | return err; |
59ac8367 HR |
573 | |
574 | /* Pin 110 is either in4 (+12V) or VID4 */ | |
575 | config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG); | |
576 | if (!(config & 0x20)) { | |
7cc3cb66 GR |
577 | err = sysfs_create_group(&client->dev.kobj, |
578 | &smsc47m192_group_in4); | |
579 | if (err) | |
ce8c6ce1 JD |
580 | goto exit_remove_files; |
581 | } | |
582 | ||
1beeffe4 TJ |
583 | data->hwmon_dev = hwmon_device_register(&client->dev); |
584 | if (IS_ERR(data->hwmon_dev)) { | |
585 | err = PTR_ERR(data->hwmon_dev); | |
ce8c6ce1 | 586 | goto exit_remove_files; |
59ac8367 | 587 | } |
59ac8367 HR |
588 | |
589 | return 0; | |
590 | ||
ce8c6ce1 JD |
591 | exit_remove_files: |
592 | sysfs_remove_group(&client->dev.kobj, &smsc47m192_group); | |
593 | sysfs_remove_group(&client->dev.kobj, &smsc47m192_group_in4); | |
59ac8367 HR |
594 | return err; |
595 | } | |
596 | ||
8fb597bb | 597 | static int smsc47m192_remove(struct i2c_client *client) |
59ac8367 HR |
598 | { |
599 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
59ac8367 | 600 | |
1beeffe4 | 601 | hwmon_device_unregister(data->hwmon_dev); |
ce8c6ce1 JD |
602 | sysfs_remove_group(&client->dev.kobj, &smsc47m192_group); |
603 | sysfs_remove_group(&client->dev.kobj, &smsc47m192_group_in4); | |
59ac8367 | 604 | |
59ac8367 HR |
605 | return 0; |
606 | } | |
607 | ||
608 | static struct smsc47m192_data *smsc47m192_update_device(struct device *dev) | |
609 | { | |
610 | struct i2c_client *client = to_i2c_client(dev); | |
611 | struct smsc47m192_data *data = i2c_get_clientdata(client); | |
612 | int i, config; | |
613 | ||
e4a7167f | 614 | mutex_lock(&data->update_lock); |
59ac8367 HR |
615 | |
616 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
617 | || !data->valid) { | |
618 | u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR); | |
619 | ||
620 | dev_dbg(&client->dev, "Starting smsc47m192 update\n"); | |
621 | ||
622 | for (i = 0; i <= 7; i++) { | |
623 | data->in[i] = i2c_smbus_read_byte_data(client, | |
624 | SMSC47M192_REG_IN(i)); | |
625 | data->in_min[i] = i2c_smbus_read_byte_data(client, | |
626 | SMSC47M192_REG_IN_MIN(i)); | |
627 | data->in_max[i] = i2c_smbus_read_byte_data(client, | |
628 | SMSC47M192_REG_IN_MAX(i)); | |
629 | } | |
630 | for (i = 0; i < 3; i++) { | |
631 | data->temp[i] = i2c_smbus_read_byte_data(client, | |
632 | SMSC47M192_REG_TEMP[i]); | |
633 | data->temp_max[i] = i2c_smbus_read_byte_data(client, | |
634 | SMSC47M192_REG_TEMP_MAX[i]); | |
635 | data->temp_min[i] = i2c_smbus_read_byte_data(client, | |
636 | SMSC47M192_REG_TEMP_MIN[i]); | |
637 | } | |
638 | for (i = 1; i < 3; i++) | |
639 | data->temp_offset[i] = i2c_smbus_read_byte_data(client, | |
640 | SMSC47M192_REG_TEMP_OFFSET(i)); | |
7cc3cb66 GR |
641 | /* |
642 | * first offset is temp_offset[0] if SFR bit 4 is set, | |
643 | * temp_offset[1] otherwise | |
644 | */ | |
59ac8367 HR |
645 | if (sfr & 0x10) { |
646 | data->temp_offset[0] = data->temp_offset[1]; | |
647 | data->temp_offset[1] = 0; | |
648 | } else | |
649 | data->temp_offset[0] = 0; | |
650 | ||
651 | data->vid = i2c_smbus_read_byte_data(client, SMSC47M192_REG_VID) | |
652 | & 0x0f; | |
653 | config = i2c_smbus_read_byte_data(client, | |
654 | SMSC47M192_REG_CONFIG); | |
655 | if (config & 0x20) | |
656 | data->vid |= (i2c_smbus_read_byte_data(client, | |
657 | SMSC47M192_REG_VID4) & 0x01) << 4; | |
658 | data->alarms = i2c_smbus_read_byte_data(client, | |
659 | SMSC47M192_REG_ALARM1) | | |
660 | (i2c_smbus_read_byte_data(client, | |
7cc3cb66 | 661 | SMSC47M192_REG_ALARM2) << 8); |
59ac8367 HR |
662 | |
663 | data->last_updated = jiffies; | |
664 | data->valid = 1; | |
665 | } | |
666 | ||
e4a7167f | 667 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
668 | |
669 | return data; | |
670 | } | |
671 | ||
f0967eea | 672 | module_i2c_driver(smsc47m192_driver); |
59ac8367 HR |
673 | |
674 | MODULE_AUTHOR("Hartmut Rick <linux@rick.claranet.de>"); | |
675 | MODULE_DESCRIPTION("SMSC47M192 driver"); | |
676 | MODULE_LICENSE("GPL"); |