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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 | { | |
78305ae7 GR |
80 | val = clamp_val(val, 0, nom_mv[n] * 255 / 192); |
81 | return SCALE(val, 192, nom_mv[n]); | |
59ac8367 HR |
82 | } |
83 | ||
7cc3cb66 GR |
84 | /* |
85 | * TEMP: 0.001 degC units (-128C to +127C) | |
86 | * REG: 1C/bit, two's complement | |
87 | */ | |
78305ae7 | 88 | static inline s8 TEMP_TO_REG(long val) |
59ac8367 | 89 | { |
043572d5 | 90 | return SCALE(clamp_val(val, -128000, 127000), 1, 1000); |
59ac8367 HR |
91 | } |
92 | ||
93 | static inline int TEMP_FROM_REG(s8 val) | |
94 | { | |
95 | return val * 1000; | |
96 | } | |
97 | ||
98 | struct smsc47m192_data { | |
166f7296 AL |
99 | struct i2c_client *client; |
100 | const struct attribute_group *groups[3]; | |
e4a7167f | 101 | struct mutex update_lock; |
59ac8367 HR |
102 | char valid; /* !=0 if following fields are valid */ |
103 | unsigned long last_updated; /* In jiffies */ | |
104 | ||
105 | u8 in[8]; /* Register value */ | |
106 | u8 in_max[8]; /* Register value */ | |
107 | u8 in_min[8]; /* Register value */ | |
108 | s8 temp[3]; /* Register value */ | |
109 | s8 temp_max[3]; /* Register value */ | |
110 | s8 temp_min[3]; /* Register value */ | |
111 | s8 temp_offset[3]; /* Register value */ | |
112 | u16 alarms; /* Register encoding, combined */ | |
113 | u8 vid; /* Register encoding, combined */ | |
114 | u8 vrm; | |
115 | }; | |
116 | ||
94314e25 AL |
117 | static struct smsc47m192_data *smsc47m192_update_device(struct device *dev) |
118 | { | |
166f7296 AL |
119 | struct smsc47m192_data *data = dev_get_drvdata(dev); |
120 | struct i2c_client *client = data->client; | |
94314e25 | 121 | int i, config; |
59ac8367 | 122 | |
94314e25 | 123 | mutex_lock(&data->update_lock); |
8fb597bb | 124 | |
94314e25 AL |
125 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
126 | || !data->valid) { | |
127 | u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR); | |
128 | ||
129 | dev_dbg(&client->dev, "Starting smsc47m192 update\n"); | |
130 | ||
131 | for (i = 0; i <= 7; i++) { | |
132 | data->in[i] = i2c_smbus_read_byte_data(client, | |
133 | SMSC47M192_REG_IN(i)); | |
134 | data->in_min[i] = i2c_smbus_read_byte_data(client, | |
135 | SMSC47M192_REG_IN_MIN(i)); | |
136 | data->in_max[i] = i2c_smbus_read_byte_data(client, | |
137 | SMSC47M192_REG_IN_MAX(i)); | |
138 | } | |
139 | for (i = 0; i < 3; i++) { | |
140 | data->temp[i] = i2c_smbus_read_byte_data(client, | |
141 | SMSC47M192_REG_TEMP[i]); | |
142 | data->temp_max[i] = i2c_smbus_read_byte_data(client, | |
143 | SMSC47M192_REG_TEMP_MAX[i]); | |
144 | data->temp_min[i] = i2c_smbus_read_byte_data(client, | |
145 | SMSC47M192_REG_TEMP_MIN[i]); | |
146 | } | |
147 | for (i = 1; i < 3; i++) | |
148 | data->temp_offset[i] = i2c_smbus_read_byte_data(client, | |
149 | SMSC47M192_REG_TEMP_OFFSET(i)); | |
150 | /* | |
151 | * first offset is temp_offset[0] if SFR bit 4 is set, | |
152 | * temp_offset[1] otherwise | |
153 | */ | |
154 | if (sfr & 0x10) { | |
155 | data->temp_offset[0] = data->temp_offset[1]; | |
156 | data->temp_offset[1] = 0; | |
157 | } else | |
158 | data->temp_offset[0] = 0; | |
159 | ||
160 | data->vid = i2c_smbus_read_byte_data(client, SMSC47M192_REG_VID) | |
161 | & 0x0f; | |
162 | config = i2c_smbus_read_byte_data(client, | |
163 | SMSC47M192_REG_CONFIG); | |
164 | if (config & 0x20) | |
165 | data->vid |= (i2c_smbus_read_byte_data(client, | |
166 | SMSC47M192_REG_VID4) & 0x01) << 4; | |
167 | data->alarms = i2c_smbus_read_byte_data(client, | |
168 | SMSC47M192_REG_ALARM1) | | |
169 | (i2c_smbus_read_byte_data(client, | |
170 | SMSC47M192_REG_ALARM2) << 8); | |
171 | ||
172 | data->last_updated = jiffies; | |
173 | data->valid = 1; | |
174 | } | |
175 | ||
176 | mutex_unlock(&data->update_lock); | |
177 | ||
178 | return data; | |
179 | } | |
59ac8367 HR |
180 | |
181 | /* Voltages */ | |
182 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, | |
183 | char *buf) | |
184 | { | |
185 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
186 | int nr = sensor_attr->index; | |
187 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
188 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr], nr)); | |
189 | } | |
190 | ||
191 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, | |
192 | char *buf) | |
193 | { | |
194 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
195 | int nr = sensor_attr->index; | |
196 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
197 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr], nr)); | |
198 | } | |
199 | ||
200 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, | |
201 | char *buf) | |
202 | { | |
203 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
204 | int nr = sensor_attr->index; | |
205 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
206 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr], nr)); | |
207 | } | |
208 | ||
209 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, | |
210 | const char *buf, size_t count) | |
211 | { | |
212 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
213 | int nr = sensor_attr->index; | |
166f7296 AL |
214 | struct smsc47m192_data *data = dev_get_drvdata(dev); |
215 | struct i2c_client *client = data->client; | |
7cc3cb66 GR |
216 | unsigned long val; |
217 | int err; | |
218 | ||
219 | err = kstrtoul(buf, 10, &val); | |
220 | if (err) | |
221 | return err; | |
59ac8367 | 222 | |
e4a7167f | 223 | mutex_lock(&data->update_lock); |
59ac8367 HR |
224 | data->in_min[nr] = IN_TO_REG(val, nr); |
225 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MIN(nr), | |
226 | data->in_min[nr]); | |
e4a7167f | 227 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
228 | return count; |
229 | } | |
230 | ||
231 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, | |
232 | const char *buf, size_t count) | |
233 | { | |
234 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
235 | int nr = sensor_attr->index; | |
166f7296 AL |
236 | struct smsc47m192_data *data = dev_get_drvdata(dev); |
237 | struct i2c_client *client = data->client; | |
7cc3cb66 GR |
238 | unsigned long val; |
239 | int err; | |
240 | ||
241 | err = kstrtoul(buf, 10, &val); | |
242 | if (err) | |
243 | return err; | |
59ac8367 | 244 | |
e4a7167f | 245 | mutex_lock(&data->update_lock); |
59ac8367 HR |
246 | data->in_max[nr] = IN_TO_REG(val, nr); |
247 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MAX(nr), | |
248 | data->in_max[nr]); | |
e4a7167f | 249 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
250 | return count; |
251 | } | |
252 | ||
253 | #define show_in_offset(offset) \ | |
254 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ | |
255 | show_in, NULL, offset); \ | |
256 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
257 | show_in_min, set_in_min, offset); \ | |
258 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
259 | show_in_max, set_in_max, offset); | |
260 | ||
261 | show_in_offset(0) | |
262 | show_in_offset(1) | |
263 | show_in_offset(2) | |
264 | show_in_offset(3) | |
265 | show_in_offset(4) | |
266 | show_in_offset(5) | |
267 | show_in_offset(6) | |
268 | show_in_offset(7) | |
269 | ||
270 | /* Temperatures */ | |
271 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, | |
272 | char *buf) | |
273 | { | |
274 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
275 | int nr = sensor_attr->index; | |
276 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
277 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
278 | } | |
279 | ||
280 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, | |
281 | char *buf) | |
282 | { | |
283 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
284 | int nr = sensor_attr->index; | |
285 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
286 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr])); | |
287 | } | |
288 | ||
289 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, | |
290 | char *buf) | |
291 | { | |
292 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
293 | int nr = sensor_attr->index; | |
294 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
295 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr])); | |
296 | } | |
297 | ||
298 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, | |
299 | const char *buf, size_t count) | |
300 | { | |
301 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
302 | int nr = sensor_attr->index; | |
166f7296 AL |
303 | struct smsc47m192_data *data = dev_get_drvdata(dev); |
304 | struct i2c_client *client = data->client; | |
7cc3cb66 GR |
305 | long val; |
306 | int err; | |
307 | ||
308 | err = kstrtol(buf, 10, &val); | |
309 | if (err) | |
310 | return err; | |
59ac8367 | 311 | |
e4a7167f | 312 | mutex_lock(&data->update_lock); |
59ac8367 HR |
313 | data->temp_min[nr] = TEMP_TO_REG(val); |
314 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MIN[nr], | |
315 | data->temp_min[nr]); | |
e4a7167f | 316 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
317 | return count; |
318 | } | |
319 | ||
320 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, | |
321 | const char *buf, size_t count) | |
322 | { | |
323 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
324 | int nr = sensor_attr->index; | |
166f7296 AL |
325 | struct smsc47m192_data *data = dev_get_drvdata(dev); |
326 | struct i2c_client *client = data->client; | |
7cc3cb66 GR |
327 | long val; |
328 | int err; | |
329 | ||
330 | err = kstrtol(buf, 10, &val); | |
331 | if (err) | |
332 | return err; | |
59ac8367 | 333 | |
e4a7167f | 334 | mutex_lock(&data->update_lock); |
59ac8367 HR |
335 | data->temp_max[nr] = TEMP_TO_REG(val); |
336 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MAX[nr], | |
337 | data->temp_max[nr]); | |
e4a7167f | 338 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
339 | return count; |
340 | } | |
341 | ||
342 | static ssize_t show_temp_offset(struct device *dev, struct device_attribute | |
343 | *attr, char *buf) | |
344 | { | |
345 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
346 | int nr = sensor_attr->index; | |
347 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
348 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr])); | |
349 | } | |
350 | ||
351 | static ssize_t set_temp_offset(struct device *dev, struct device_attribute | |
352 | *attr, const char *buf, size_t count) | |
353 | { | |
354 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
355 | int nr = sensor_attr->index; | |
166f7296 AL |
356 | struct smsc47m192_data *data = dev_get_drvdata(dev); |
357 | struct i2c_client *client = data->client; | |
59ac8367 | 358 | u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR); |
7cc3cb66 GR |
359 | long val; |
360 | int err; | |
361 | ||
362 | err = kstrtol(buf, 10, &val); | |
363 | if (err) | |
364 | return err; | |
59ac8367 | 365 | |
e4a7167f | 366 | mutex_lock(&data->update_lock); |
59ac8367 | 367 | data->temp_offset[nr] = TEMP_TO_REG(val); |
7cc3cb66 | 368 | if (nr > 1) |
59ac8367 HR |
369 | i2c_smbus_write_byte_data(client, |
370 | SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]); | |
371 | else if (data->temp_offset[nr] != 0) { | |
7cc3cb66 GR |
372 | /* |
373 | * offset[0] and offset[1] share the same register, | |
374 | * SFR bit 4 activates offset[0] | |
375 | */ | |
59ac8367 | 376 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR, |
7cc3cb66 | 377 | (sfr & 0xef) | (nr == 0 ? 0x10 : 0)); |
59ac8367 HR |
378 | data->temp_offset[1-nr] = 0; |
379 | i2c_smbus_write_byte_data(client, | |
380 | SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]); | |
7cc3cb66 | 381 | } else if ((sfr & 0x10) == (nr == 0 ? 0x10 : 0)) |
59ac8367 HR |
382 | i2c_smbus_write_byte_data(client, |
383 | SMSC47M192_REG_TEMP_OFFSET(nr), 0); | |
e4a7167f | 384 | mutex_unlock(&data->update_lock); |
59ac8367 HR |
385 | return count; |
386 | } | |
387 | ||
388 | #define show_temp_index(index) \ | |
389 | static SENSOR_DEVICE_ATTR(temp##index##_input, S_IRUGO, \ | |
390 | show_temp, NULL, index-1); \ | |
391 | static SENSOR_DEVICE_ATTR(temp##index##_min, S_IRUGO | S_IWUSR, \ | |
392 | show_temp_min, set_temp_min, index-1); \ | |
393 | static SENSOR_DEVICE_ATTR(temp##index##_max, S_IRUGO | S_IWUSR, \ | |
394 | show_temp_max, set_temp_max, index-1); \ | |
395 | static SENSOR_DEVICE_ATTR(temp##index##_offset, S_IRUGO | S_IWUSR, \ | |
396 | show_temp_offset, set_temp_offset, index-1); | |
397 | ||
398 | show_temp_index(1) | |
399 | show_temp_index(2) | |
400 | show_temp_index(3) | |
401 | ||
402 | /* VID */ | |
2d1c4cf1 JL |
403 | static ssize_t cpu0_vid_show(struct device *dev, |
404 | struct device_attribute *attr, char *buf) | |
59ac8367 HR |
405 | { |
406 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
407 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); | |
408 | } | |
2d1c4cf1 | 409 | static DEVICE_ATTR_RO(cpu0_vid); |
59ac8367 | 410 | |
2d1c4cf1 | 411 | static ssize_t vrm_show(struct device *dev, struct device_attribute *attr, |
59ac8367 HR |
412 | char *buf) |
413 | { | |
90d6619a | 414 | struct smsc47m192_data *data = dev_get_drvdata(dev); |
59ac8367 HR |
415 | return sprintf(buf, "%d\n", data->vrm); |
416 | } | |
417 | ||
2d1c4cf1 JL |
418 | static ssize_t vrm_store(struct device *dev, struct device_attribute *attr, |
419 | const char *buf, size_t count) | |
59ac8367 | 420 | { |
8f74efe8 | 421 | struct smsc47m192_data *data = dev_get_drvdata(dev); |
7cc3cb66 GR |
422 | unsigned long val; |
423 | int err; | |
424 | ||
425 | err = kstrtoul(buf, 10, &val); | |
426 | if (err) | |
427 | return err; | |
043572d5 GR |
428 | if (val > 255) |
429 | return -EINVAL; | |
7cc3cb66 GR |
430 | |
431 | data->vrm = val; | |
59ac8367 HR |
432 | return count; |
433 | } | |
2d1c4cf1 | 434 | static DEVICE_ATTR_RW(vrm); |
59ac8367 HR |
435 | |
436 | /* Alarms */ | |
437 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, | |
438 | char *buf) | |
439 | { | |
440 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
441 | int nr = sensor_attr->index; | |
442 | struct smsc47m192_data *data = smsc47m192_update_device(dev); | |
443 | return sprintf(buf, "%u\n", (data->alarms & nr) ? 1 : 0); | |
444 | } | |
445 | ||
446 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 0x0010); | |
447 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0x0020); | |
448 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 0x0040); | |
7817a39e JD |
449 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 0x4000); |
450 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 0x8000); | |
59ac8367 HR |
451 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0x0001); |
452 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 0x0002); | |
453 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 0x0004); | |
454 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 0x0008); | |
455 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 0x0100); | |
456 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 0x0200); | |
457 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 0x0400); | |
458 | static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 0x0800); | |
459 | ||
ce8c6ce1 JD |
460 | static struct attribute *smsc47m192_attributes[] = { |
461 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
462 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
463 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
464 | &sensor_dev_attr_in0_alarm.dev_attr.attr, | |
465 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
466 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
467 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
468 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
469 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
470 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
471 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
472 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
473 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
474 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
475 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
476 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
477 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
478 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
479 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
480 | &sensor_dev_attr_in5_alarm.dev_attr.attr, | |
481 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
482 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
483 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
484 | &sensor_dev_attr_in6_alarm.dev_attr.attr, | |
485 | &sensor_dev_attr_in7_input.dev_attr.attr, | |
486 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
487 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
488 | &sensor_dev_attr_in7_alarm.dev_attr.attr, | |
489 | ||
490 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
491 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
492 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
493 | &sensor_dev_attr_temp1_offset.dev_attr.attr, | |
494 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, | |
495 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
496 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
497 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
498 | &sensor_dev_attr_temp2_offset.dev_attr.attr, | |
499 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
7817a39e | 500 | &sensor_dev_attr_temp2_fault.dev_attr.attr, |
ce8c6ce1 JD |
501 | &sensor_dev_attr_temp3_input.dev_attr.attr, |
502 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
503 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
504 | &sensor_dev_attr_temp3_offset.dev_attr.attr, | |
505 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
7817a39e | 506 | &sensor_dev_attr_temp3_fault.dev_attr.attr, |
ce8c6ce1 JD |
507 | |
508 | &dev_attr_cpu0_vid.attr, | |
509 | &dev_attr_vrm.attr, | |
510 | NULL | |
511 | }; | |
512 | ||
513 | static const struct attribute_group smsc47m192_group = { | |
514 | .attrs = smsc47m192_attributes, | |
515 | }; | |
516 | ||
517 | static struct attribute *smsc47m192_attributes_in4[] = { | |
518 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
519 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
520 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
521 | &sensor_dev_attr_in4_alarm.dev_attr.attr, | |
522 | NULL | |
523 | }; | |
524 | ||
525 | static const struct attribute_group smsc47m192_group_in4 = { | |
526 | .attrs = smsc47m192_attributes_in4, | |
527 | }; | |
528 | ||
59ac8367 HR |
529 | static void smsc47m192_init_client(struct i2c_client *client) |
530 | { | |
531 | int i; | |
532 | u8 config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG); | |
533 | u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR); | |
534 | ||
535 | /* select cycle mode (pause 1 sec between updates) */ | |
536 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR, | |
537 | (sfr & 0xfd) | 0x02); | |
538 | if (!(config & 0x01)) { | |
539 | /* initialize alarm limits */ | |
7cc3cb66 | 540 | for (i = 0; i < 8; i++) { |
59ac8367 HR |
541 | i2c_smbus_write_byte_data(client, |
542 | SMSC47M192_REG_IN_MIN(i), 0); | |
543 | i2c_smbus_write_byte_data(client, | |
544 | SMSC47M192_REG_IN_MAX(i), 0xff); | |
545 | } | |
7cc3cb66 | 546 | for (i = 0; i < 3; i++) { |
59ac8367 HR |
547 | i2c_smbus_write_byte_data(client, |
548 | SMSC47M192_REG_TEMP_MIN[i], 0x80); | |
549 | i2c_smbus_write_byte_data(client, | |
550 | SMSC47M192_REG_TEMP_MAX[i], 0x7f); | |
551 | } | |
552 | ||
553 | /* start monitoring */ | |
554 | i2c_smbus_write_byte_data(client, SMSC47M192_REG_CONFIG, | |
555 | (config & 0xf7) | 0x01); | |
556 | } | |
557 | } | |
558 | ||
8fb597bb | 559 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 560 | static int smsc47m192_detect(struct i2c_client *client, |
8fb597bb | 561 | struct i2c_board_info *info) |
59ac8367 | 562 | { |
8fb597bb JD |
563 | struct i2c_adapter *adapter = client->adapter; |
564 | int version; | |
59ac8367 HR |
565 | |
566 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
8fb597bb | 567 | return -ENODEV; |
59ac8367 HR |
568 | |
569 | /* Detection criteria from sensors_detect script */ | |
52df6440 JD |
570 | version = i2c_smbus_read_byte_data(client, SMSC47M192_REG_VERSION); |
571 | if (i2c_smbus_read_byte_data(client, | |
59ac8367 | 572 | SMSC47M192_REG_COMPANY_ID) == 0x55 |
52df6440 JD |
573 | && (version & 0xf0) == 0x20 |
574 | && (i2c_smbus_read_byte_data(client, | |
59ac8367 | 575 | SMSC47M192_REG_VID) & 0x70) == 0x00 |
52df6440 | 576 | && (i2c_smbus_read_byte_data(client, |
59ac8367 | 577 | SMSC47M192_REG_VID4) & 0xfe) == 0x80) { |
52df6440 JD |
578 | dev_info(&adapter->dev, |
579 | "found SMSC47M192 or compatible, " | |
580 | "version 2, stepping A%d\n", version & 0x0f); | |
581 | } else { | |
582 | dev_dbg(&adapter->dev, | |
583 | "SMSC47M192 detection failed at 0x%02x\n", | |
584 | client->addr); | |
585 | return -ENODEV; | |
59ac8367 HR |
586 | } |
587 | ||
8fb597bb JD |
588 | strlcpy(info->type, "smsc47m192", I2C_NAME_SIZE); |
589 | ||
590 | return 0; | |
591 | } | |
592 | ||
593 | static int smsc47m192_probe(struct i2c_client *client, | |
594 | const struct i2c_device_id *id) | |
595 | { | |
166f7296 AL |
596 | struct device *dev = &client->dev; |
597 | struct device *hwmon_dev; | |
8fb597bb JD |
598 | struct smsc47m192_data *data; |
599 | int config; | |
8fb597bb | 600 | |
166f7296 | 601 | data = devm_kzalloc(dev, sizeof(struct smsc47m192_data), GFP_KERNEL); |
2625996b GR |
602 | if (!data) |
603 | return -ENOMEM; | |
8fb597bb | 604 | |
166f7296 | 605 | data->client = client; |
59ac8367 | 606 | data->vrm = vid_which_vrm(); |
e4a7167f | 607 | mutex_init(&data->update_lock); |
59ac8367 | 608 | |
59ac8367 HR |
609 | /* Initialize the SMSC47M192 chip */ |
610 | smsc47m192_init_client(client); | |
611 | ||
166f7296 AL |
612 | /* sysfs hooks */ |
613 | data->groups[0] = &smsc47m192_group; | |
59ac8367 HR |
614 | /* Pin 110 is either in4 (+12V) or VID4 */ |
615 | config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG); | |
166f7296 AL |
616 | if (!(config & 0x20)) |
617 | data->groups[1] = &smsc47m192_group_in4; | |
59ac8367 | 618 | |
166f7296 AL |
619 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
620 | data, data->groups); | |
621 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
59ac8367 HR |
622 | } |
623 | ||
94314e25 AL |
624 | static const struct i2c_device_id smsc47m192_id[] = { |
625 | { "smsc47m192", 0 }, | |
626 | { } | |
627 | }; | |
628 | MODULE_DEVICE_TABLE(i2c, smsc47m192_id); | |
59ac8367 | 629 | |
94314e25 AL |
630 | static struct i2c_driver smsc47m192_driver = { |
631 | .class = I2C_CLASS_HWMON, | |
632 | .driver = { | |
633 | .name = "smsc47m192", | |
634 | }, | |
635 | .probe = smsc47m192_probe, | |
94314e25 AL |
636 | .id_table = smsc47m192_id, |
637 | .detect = smsc47m192_detect, | |
638 | .address_list = normal_i2c, | |
639 | }; | |
59ac8367 | 640 | |
f0967eea | 641 | module_i2c_driver(smsc47m192_driver); |
59ac8367 HR |
642 | |
643 | MODULE_AUTHOR("Hartmut Rick <linux@rick.claranet.de>"); | |
644 | MODULE_DESCRIPTION("SMSC47M192 driver"); | |
645 | MODULE_LICENSE("GPL"); |