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1 | /* |
2 | * gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware |
3 | * monitoring |
4 | * Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>, |
5 | * Kyösti Mälkki <kmalkki@cc.hut.fi> |
6 | * Copyright (c) 2005 Maarten Deprez <maartendeprez@users.sourceforge.net> |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License as published by |
10 | * the Free Software Foundation; either version 2 of the License, or |
11 | * (at your option) any later version. |
12 | * |
13 | * This program is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | * GNU General Public License for more details. |
17 | * |
18 | * You should have received a copy of the GNU General Public License |
19 | * along with this program; if not, write to the Free Software |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
21 | * |
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 | #include <linux/mutex.h> |
34 | #include <linux/sysfs.h> |
35 | |
36 | /* Type of the extra sensor */ |
37 | static unsigned short extra_sensor_type; |
38 | module_param(extra_sensor_type, ushort, 0); |
39 | MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)"); |
40 | |
41 | /* Addresses to scan */ |
42 | static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; |
43 | |
44 | /* |
45 | * Many GL520 constants specified below |
46 | * One of the inputs can be configured as either temp or voltage. |
47 | * That's why _TEMP2 and _IN4 access the same register |
48 | */ |
49 | |
50 | /* The GL520 registers */ |
51 | #define GL520_REG_CHIP_ID 0x00 |
52 | #define GL520_REG_REVISION 0x01 |
53 | #define GL520_REG_CONF 0x03 |
54 | #define GL520_REG_MASK 0x11 |
55 | |
56 | #define GL520_REG_VID_INPUT 0x02 |
57 | |
58 | static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e }; |
59 | static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b }; |
60 | static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 }; |
61 | static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 }; |
62 | |
63 | static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e }; |
64 | static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 }; |
65 | static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 }; |
66 | |
67 | #define GL520_REG_FAN_INPUT 0x07 |
68 | #define GL520_REG_FAN_MIN 0x08 |
69 | #define GL520_REG_FAN_DIV 0x0f |
70 | #define GL520_REG_FAN_OFF GL520_REG_FAN_DIV |
71 | |
72 | #define GL520_REG_ALARMS 0x12 |
73 | #define GL520_REG_BEEP_MASK 0x10 |
74 | #define GL520_REG_BEEP_ENABLE GL520_REG_CONF |
75 | |
76 | /* |
77 | * Function declarations |
78 | */ |
79 | |
80 | static int gl520_probe(struct i2c_client *client, |
81 | const struct i2c_device_id *id); |
82 | static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info); |
83 | static void gl520_init_client(struct i2c_client *client); |
84 | static int gl520_remove(struct i2c_client *client); |
85 | static int gl520_read_value(struct i2c_client *client, u8 reg); |
86 | static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value); |
87 | static struct gl520_data *gl520_update_device(struct device *dev); |
88 | |
89 | /* Driver data */ |
90 | static const struct i2c_device_id gl520_id[] = { |
91 | { "gl520sm", 0 }, |
92 | { } |
93 | }; |
94 | MODULE_DEVICE_TABLE(i2c, gl520_id); |
95 | |
96 | static struct i2c_driver gl520_driver = { |
97 | .class = I2C_CLASS_HWMON, |
98 | .driver = { |
99 | .name = "gl520sm", |
100 | }, |
101 | .probe = gl520_probe, |
102 | .remove = gl520_remove, |
103 | .id_table = gl520_id, |
104 | .detect = gl520_detect, |
105 | .address_list = normal_i2c, |
106 | }; |
107 | |
108 | /* Client data */ |
109 | struct gl520_data { |
110 | struct device *hwmon_dev; |
111 | struct mutex update_lock; |
112 | char valid; /* zero until the following fields are valid */ |
113 | unsigned long last_updated; /* in jiffies */ |
114 | |
115 | u8 vid; |
116 | u8 vrm; |
117 | u8 in_input[5]; /* [0] = VVD */ |
118 | u8 in_min[5]; /* [0] = VDD */ |
119 | u8 in_max[5]; /* [0] = VDD */ |
120 | u8 fan_input[2]; |
121 | u8 fan_min[2]; |
122 | u8 fan_div[2]; |
123 | u8 fan_off; |
124 | u8 temp_input[2]; |
125 | u8 temp_max[2]; |
126 | u8 temp_max_hyst[2]; |
127 | u8 alarms; |
128 | u8 beep_enable; |
129 | u8 beep_mask; |
130 | u8 alarm_mask; |
131 | u8 two_temps; |
132 | }; |
133 | |
134 | /* |
135 | * Sysfs stuff |
136 | */ |
137 | |
138 | static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr, |
139 | char *buf) |
140 | { |
141 | struct gl520_data *data = gl520_update_device(dev); |
142 | return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); |
143 | } |
144 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL); |
145 | |
146 | #define VDD_FROM_REG(val) (((val) * 95 + 2) / 4) |
147 | #define VDD_TO_REG(val) clamp_val((((val) * 4 + 47) / 95), 0, 255) |
148 | |
149 | #define IN_FROM_REG(val) ((val) * 19) |
150 | #define IN_TO_REG(val) clamp_val((((val) + 9) / 19), 0, 255) |
151 | |
152 | static ssize_t get_in_input(struct device *dev, struct device_attribute *attr, |
153 | char *buf) |
154 | { |
155 | int n = to_sensor_dev_attr(attr)->index; |
156 | struct gl520_data *data = gl520_update_device(dev); |
157 | u8 r = data->in_input[n]; |
158 | |
159 | if (n == 0) |
160 | return sprintf(buf, "%d\n", VDD_FROM_REG(r)); |
161 | else |
162 | return sprintf(buf, "%d\n", IN_FROM_REG(r)); |
163 | } |
164 | |
165 | static ssize_t get_in_min(struct device *dev, struct device_attribute *attr, |
166 | char *buf) |
167 | { |
168 | int n = to_sensor_dev_attr(attr)->index; |
169 | struct gl520_data *data = gl520_update_device(dev); |
170 | u8 r = data->in_min[n]; |
171 | |
172 | if (n == 0) |
173 | return sprintf(buf, "%d\n", VDD_FROM_REG(r)); |
174 | else |
175 | return sprintf(buf, "%d\n", IN_FROM_REG(r)); |
176 | } |
177 | |
178 | static ssize_t get_in_max(struct device *dev, struct device_attribute *attr, |
179 | char *buf) |
180 | { |
181 | int n = to_sensor_dev_attr(attr)->index; |
182 | struct gl520_data *data = gl520_update_device(dev); |
183 | u8 r = data->in_max[n]; |
184 | |
185 | if (n == 0) |
186 | return sprintf(buf, "%d\n", VDD_FROM_REG(r)); |
187 | else |
188 | return sprintf(buf, "%d\n", IN_FROM_REG(r)); |
189 | } |
190 | |
191 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
192 | const char *buf, size_t count) |
193 | { |
194 | struct i2c_client *client = to_i2c_client(dev); |
195 | struct gl520_data *data = i2c_get_clientdata(client); |
196 | int n = to_sensor_dev_attr(attr)->index; |
197 | u8 r; |
198 | long v; |
199 | int err; |
200 | |
201 | err = kstrtol(buf, 10, &v); |
202 | if (err) |
203 | return err; |
204 | |
205 | mutex_lock(&data->update_lock); |
206 | |
207 | if (n == 0) |
208 | r = VDD_TO_REG(v); |
209 | else |
210 | r = IN_TO_REG(v); |
211 | |
212 | data->in_min[n] = r; |
213 | |
214 | if (n < 4) |
215 | gl520_write_value(client, GL520_REG_IN_MIN[n], |
216 | (gl520_read_value(client, GL520_REG_IN_MIN[n]) |
217 | & ~0xff) | r); |
218 | else |
219 | gl520_write_value(client, GL520_REG_IN_MIN[n], r); |
220 | |
221 | mutex_unlock(&data->update_lock); |
222 | return count; |
223 | } |
224 | |
225 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
226 | const char *buf, size_t count) |
227 | { |
228 | struct i2c_client *client = to_i2c_client(dev); |
229 | struct gl520_data *data = i2c_get_clientdata(client); |
230 | int n = to_sensor_dev_attr(attr)->index; |
231 | u8 r; |
232 | long v; |
233 | int err; |
234 | |
235 | err = kstrtol(buf, 10, &v); |
236 | if (err) |
237 | return err; |
238 | |
239 | if (n == 0) |
240 | r = VDD_TO_REG(v); |
241 | else |
242 | r = IN_TO_REG(v); |
243 | |
244 | mutex_lock(&data->update_lock); |
245 | |
246 | data->in_max[n] = r; |
247 | |
248 | if (n < 4) |
249 | gl520_write_value(client, GL520_REG_IN_MAX[n], |
250 | (gl520_read_value(client, GL520_REG_IN_MAX[n]) |
251 | & ~0xff00) | (r << 8)); |
252 | else |
253 | gl520_write_value(client, GL520_REG_IN_MAX[n], r); |
254 | |
255 | mutex_unlock(&data->update_lock); |
256 | return count; |
257 | } |
258 | |
259 | static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0); |
260 | static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1); |
261 | static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2); |
262 | static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3); |
263 | static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4); |
264 | static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR, |
265 | get_in_min, set_in_min, 0); |
266 | static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR, |
267 | get_in_min, set_in_min, 1); |
268 | static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR, |
269 | get_in_min, set_in_min, 2); |
270 | static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR, |
271 | get_in_min, set_in_min, 3); |
272 | static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR, |
273 | get_in_min, set_in_min, 4); |
274 | static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR, |
275 | get_in_max, set_in_max, 0); |
276 | static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR, |
277 | get_in_max, set_in_max, 1); |
278 | static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR, |
279 | get_in_max, set_in_max, 2); |
280 | static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR, |
281 | get_in_max, set_in_max, 3); |
282 | static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR, |
283 | get_in_max, set_in_max, 4); |
284 | |
285 | #define DIV_FROM_REG(val) (1 << (val)) |
286 | #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) << (div)))) |
287 | #define FAN_TO_REG(val, div) ((val) <= 0 ? 0 : \ |
288 | clamp_val((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255)) |
289 | |
290 | static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr, |
291 | char *buf) |
292 | { |
293 | int n = to_sensor_dev_attr(attr)->index; |
294 | struct gl520_data *data = gl520_update_device(dev); |
295 | |
296 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n], |
297 | data->fan_div[n])); |
298 | } |
299 | |
300 | static ssize_t get_fan_min(struct device *dev, struct device_attribute *attr, |
301 | char *buf) |
302 | { |
303 | int n = to_sensor_dev_attr(attr)->index; |
304 | struct gl520_data *data = gl520_update_device(dev); |
305 | |
306 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n], |
307 | data->fan_div[n])); |
308 | } |
309 | |
310 | static ssize_t get_fan_div(struct device *dev, struct device_attribute *attr, |
311 | char *buf) |
312 | { |
313 | int n = to_sensor_dev_attr(attr)->index; |
314 | struct gl520_data *data = gl520_update_device(dev); |
315 | |
316 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n])); |
317 | } |
318 | |
319 | static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr, |
320 | char *buf) |
321 | { |
322 | struct gl520_data *data = gl520_update_device(dev); |
323 | return sprintf(buf, "%d\n", data->fan_off); |
324 | } |
325 | |
326 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
327 | const char *buf, size_t count) |
328 | { |
329 | struct i2c_client *client = to_i2c_client(dev); |
330 | struct gl520_data *data = i2c_get_clientdata(client); |
331 | int n = to_sensor_dev_attr(attr)->index; |
332 | u8 r; |
333 | unsigned long v; |
334 | int err; |
335 | |
336 | err = kstrtoul(buf, 10, &v); |
337 | if (err) |
338 | return err; |
339 | |
340 | mutex_lock(&data->update_lock); |
341 | r = FAN_TO_REG(v, data->fan_div[n]); |
342 | data->fan_min[n] = r; |
343 | |
344 | if (n == 0) |
345 | gl520_write_value(client, GL520_REG_FAN_MIN, |
346 | (gl520_read_value(client, GL520_REG_FAN_MIN) |
347 | & ~0xff00) | (r << 8)); |
348 | else |
349 | gl520_write_value(client, GL520_REG_FAN_MIN, |
350 | (gl520_read_value(client, GL520_REG_FAN_MIN) |
351 | & ~0xff) | r); |
352 | |
353 | data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); |
354 | if (data->fan_min[n] == 0) |
355 | data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40; |
356 | else |
357 | data->alarm_mask |= (n == 0) ? 0x20 : 0x40; |
358 | data->beep_mask &= data->alarm_mask; |
359 | gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); |
360 | |
361 | mutex_unlock(&data->update_lock); |
362 | return count; |
363 | } |
364 | |
365 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
366 | const char *buf, size_t count) |
367 | { |
368 | struct i2c_client *client = to_i2c_client(dev); |
369 | struct gl520_data *data = i2c_get_clientdata(client); |
370 | int n = to_sensor_dev_attr(attr)->index; |
371 | u8 r; |
372 | unsigned long v; |
373 | int err; |
374 | |
375 | err = kstrtoul(buf, 10, &v); |
376 | if (err) |
377 | return err; |
378 | |
379 | switch (v) { |
380 | case 1: |
381 | r = 0; |
382 | break; |
383 | case 2: |
384 | r = 1; |
385 | break; |
386 | case 4: |
387 | r = 2; |
388 | break; |
389 | case 8: |
390 | r = 3; |
391 | break; |
392 | default: |
393 | dev_err(&client->dev, |
394 | "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v); |
395 | return -EINVAL; |
396 | } |
397 | |
398 | mutex_lock(&data->update_lock); |
399 | data->fan_div[n] = r; |
400 | |
401 | if (n == 0) |
402 | gl520_write_value(client, GL520_REG_FAN_DIV, |
403 | (gl520_read_value(client, GL520_REG_FAN_DIV) |
404 | & ~0xc0) | (r << 6)); |
405 | else |
406 | gl520_write_value(client, GL520_REG_FAN_DIV, |
407 | (gl520_read_value(client, GL520_REG_FAN_DIV) |
408 | & ~0x30) | (r << 4)); |
409 | |
410 | mutex_unlock(&data->update_lock); |
411 | return count; |
412 | } |
413 | |
414 | static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr, |
415 | const char *buf, size_t count) |
416 | { |
417 | struct i2c_client *client = to_i2c_client(dev); |
418 | struct gl520_data *data = i2c_get_clientdata(client); |
419 | u8 r; |
420 | unsigned long v; |
421 | int err; |
422 | |
423 | err = kstrtoul(buf, 10, &v); |
424 | if (err) |
425 | return err; |
426 | |
427 | r = (v ? 1 : 0); |
428 | |
429 | mutex_lock(&data->update_lock); |
430 | data->fan_off = r; |
431 | gl520_write_value(client, GL520_REG_FAN_OFF, |
432 | (gl520_read_value(client, GL520_REG_FAN_OFF) |
433 | & ~0x0c) | (r << 2)); |
434 | mutex_unlock(&data->update_lock); |
435 | return count; |
436 | } |
437 | |
438 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0); |
439 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1); |
440 | static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR, |
441 | get_fan_min, set_fan_min, 0); |
442 | static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR, |
443 | get_fan_min, set_fan_min, 1); |
444 | static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, |
445 | get_fan_div, set_fan_div, 0); |
446 | static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, |
447 | get_fan_div, set_fan_div, 1); |
448 | static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR, |
449 | get_fan_off, set_fan_off); |
450 | |
451 | #define TEMP_FROM_REG(val) (((val) - 130) * 1000) |
452 | #define TEMP_TO_REG(val) clamp_val(((((val) < 0 ? \ |
453 | (val) - 500 : (val) + 500) / 1000) + 130), 0, 255) |
454 | |
455 | static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr, |
456 | char *buf) |
457 | { |
458 | int n = to_sensor_dev_attr(attr)->index; |
459 | struct gl520_data *data = gl520_update_device(dev); |
460 | |
461 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n])); |
462 | } |
463 | |
464 | static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr, |
465 | char *buf) |
466 | { |
467 | int n = to_sensor_dev_attr(attr)->index; |
468 | struct gl520_data *data = gl520_update_device(dev); |
469 | |
470 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n])); |
471 | } |
472 | |
473 | static ssize_t get_temp_max_hyst(struct device *dev, |
474 | struct device_attribute *attr, char *buf) |
475 | { |
476 | int n = to_sensor_dev_attr(attr)->index; |
477 | struct gl520_data *data = gl520_update_device(dev); |
478 | |
479 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n])); |
480 | } |
481 | |
482 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
483 | const char *buf, size_t count) |
484 | { |
485 | struct i2c_client *client = to_i2c_client(dev); |
486 | struct gl520_data *data = i2c_get_clientdata(client); |
487 | int n = to_sensor_dev_attr(attr)->index; |
488 | long v; |
489 | int err; |
490 | |
491 | err = kstrtol(buf, 10, &v); |
492 | if (err) |
493 | return err; |
494 | |
495 | mutex_lock(&data->update_lock); |
496 | data->temp_max[n] = TEMP_TO_REG(v); |
497 | gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]); |
498 | mutex_unlock(&data->update_lock); |
499 | return count; |
500 | } |
501 | |
502 | static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute |
503 | *attr, const char *buf, size_t count) |
504 | { |
505 | struct i2c_client *client = to_i2c_client(dev); |
506 | struct gl520_data *data = i2c_get_clientdata(client); |
507 | int n = to_sensor_dev_attr(attr)->index; |
508 | long v; |
509 | int err; |
510 | |
511 | err = kstrtol(buf, 10, &v); |
512 | if (err) |
513 | return err; |
514 | |
515 | mutex_lock(&data->update_lock); |
516 | data->temp_max_hyst[n] = TEMP_TO_REG(v); |
517 | gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n], |
518 | data->temp_max_hyst[n]); |
519 | mutex_unlock(&data->update_lock); |
520 | return count; |
521 | } |
522 | |
523 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0); |
524 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1); |
525 | static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, |
526 | get_temp_max, set_temp_max, 0); |
527 | static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR, |
528 | get_temp_max, set_temp_max, 1); |
529 | static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, |
530 | get_temp_max_hyst, set_temp_max_hyst, 0); |
531 | static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, |
532 | get_temp_max_hyst, set_temp_max_hyst, 1); |
533 | |
534 | static ssize_t get_alarms(struct device *dev, struct device_attribute *attr, |
535 | char *buf) |
536 | { |
537 | struct gl520_data *data = gl520_update_device(dev); |
538 | return sprintf(buf, "%d\n", data->alarms); |
539 | } |
540 | |
541 | static ssize_t get_beep_enable(struct device *dev, struct device_attribute |
542 | *attr, char *buf) |
543 | { |
544 | struct gl520_data *data = gl520_update_device(dev); |
545 | return sprintf(buf, "%d\n", data->beep_enable); |
546 | } |
547 | |
548 | static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr, |
549 | char *buf) |
550 | { |
551 | struct gl520_data *data = gl520_update_device(dev); |
552 | return sprintf(buf, "%d\n", data->beep_mask); |
553 | } |
554 | |
555 | static ssize_t set_beep_enable(struct device *dev, struct device_attribute |
556 | *attr, const char *buf, size_t count) |
557 | { |
558 | struct i2c_client *client = to_i2c_client(dev); |
559 | struct gl520_data *data = i2c_get_clientdata(client); |
560 | u8 r; |
561 | unsigned long v; |
562 | int err; |
563 | |
564 | err = kstrtoul(buf, 10, &v); |
565 | if (err) |
566 | return err; |
567 | |
568 | r = (v ? 0 : 1); |
569 | |
570 | mutex_lock(&data->update_lock); |
571 | data->beep_enable = !r; |
572 | gl520_write_value(client, GL520_REG_BEEP_ENABLE, |
573 | (gl520_read_value(client, GL520_REG_BEEP_ENABLE) |
574 | & ~0x04) | (r << 2)); |
575 | mutex_unlock(&data->update_lock); |
576 | return count; |
577 | } |
578 | |
579 | static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr, |
580 | const char *buf, size_t count) |
581 | { |
582 | struct i2c_client *client = to_i2c_client(dev); |
583 | struct gl520_data *data = i2c_get_clientdata(client); |
584 | unsigned long r; |
585 | int err; |
586 | |
587 | err = kstrtoul(buf, 10, &r); |
588 | if (err) |
589 | return err; |
590 | |
591 | mutex_lock(&data->update_lock); |
592 | r &= data->alarm_mask; |
593 | data->beep_mask = r; |
594 | gl520_write_value(client, GL520_REG_BEEP_MASK, r); |
595 | mutex_unlock(&data->update_lock); |
596 | return count; |
597 | } |
598 | |
599 | static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL); |
600 | static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR, |
601 | get_beep_enable, set_beep_enable); |
602 | static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR, |
603 | get_beep_mask, set_beep_mask); |
604 | |
605 | static ssize_t get_alarm(struct device *dev, struct device_attribute *attr, |
606 | char *buf) |
607 | { |
608 | int bit_nr = to_sensor_dev_attr(attr)->index; |
609 | struct gl520_data *data = gl520_update_device(dev); |
610 | |
611 | return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1); |
612 | } |
613 | |
614 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, get_alarm, NULL, 0); |
615 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1); |
616 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2); |
617 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3); |
618 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4); |
619 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5); |
620 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6); |
621 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7); |
622 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7); |
623 | |
624 | static ssize_t get_beep(struct device *dev, struct device_attribute *attr, |
625 | char *buf) |
626 | { |
627 | int bitnr = to_sensor_dev_attr(attr)->index; |
628 | struct gl520_data *data = gl520_update_device(dev); |
629 | |
630 | return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1); |
631 | } |
632 | |
633 | static ssize_t set_beep(struct device *dev, struct device_attribute *attr, |
634 | const char *buf, size_t count) |
635 | { |
636 | struct i2c_client *client = to_i2c_client(dev); |
637 | struct gl520_data *data = i2c_get_clientdata(client); |
638 | int bitnr = to_sensor_dev_attr(attr)->index; |
639 | unsigned long bit; |
640 | |
641 | int err; |
642 | |
643 | err = kstrtoul(buf, 10, &bit); |
644 | if (err) |
645 | return err; |
646 | if (bit & ~1) |
647 | return -EINVAL; |
648 | |
649 | mutex_lock(&data->update_lock); |
650 | data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); |
651 | if (bit) |
652 | data->beep_mask |= (1 << bitnr); |
653 | else |
654 | data->beep_mask &= ~(1 << bitnr); |
655 | gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); |
656 | mutex_unlock(&data->update_lock); |
657 | return count; |
658 | } |
659 | |
660 | static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0); |
661 | static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1); |
662 | static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2); |
663 | static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3); |
664 | static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4); |
665 | static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5); |
666 | static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6); |
667 | static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7); |
668 | static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7); |
669 | |
670 | static struct attribute *gl520_attributes[] = { |
671 | &dev_attr_cpu0_vid.attr, |
672 | |
673 | &sensor_dev_attr_in0_input.dev_attr.attr, |
674 | &sensor_dev_attr_in0_min.dev_attr.attr, |
675 | &sensor_dev_attr_in0_max.dev_attr.attr, |
676 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
677 | &sensor_dev_attr_in0_beep.dev_attr.attr, |
678 | &sensor_dev_attr_in1_input.dev_attr.attr, |
679 | &sensor_dev_attr_in1_min.dev_attr.attr, |
680 | &sensor_dev_attr_in1_max.dev_attr.attr, |
681 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
682 | &sensor_dev_attr_in1_beep.dev_attr.attr, |
683 | &sensor_dev_attr_in2_input.dev_attr.attr, |
684 | &sensor_dev_attr_in2_min.dev_attr.attr, |
685 | &sensor_dev_attr_in2_max.dev_attr.attr, |
686 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
687 | &sensor_dev_attr_in2_beep.dev_attr.attr, |
688 | &sensor_dev_attr_in3_input.dev_attr.attr, |
689 | &sensor_dev_attr_in3_min.dev_attr.attr, |
690 | &sensor_dev_attr_in3_max.dev_attr.attr, |
691 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
692 | &sensor_dev_attr_in3_beep.dev_attr.attr, |
693 | |
694 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
695 | &sensor_dev_attr_fan1_min.dev_attr.attr, |
696 | &sensor_dev_attr_fan1_div.dev_attr.attr, |
697 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
698 | &sensor_dev_attr_fan1_beep.dev_attr.attr, |
699 | &dev_attr_fan1_off.attr, |
700 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
701 | &sensor_dev_attr_fan2_min.dev_attr.attr, |
702 | &sensor_dev_attr_fan2_div.dev_attr.attr, |
703 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
704 | &sensor_dev_attr_fan2_beep.dev_attr.attr, |
705 | |
706 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
707 | &sensor_dev_attr_temp1_max.dev_attr.attr, |
708 | &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, |
709 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
710 | &sensor_dev_attr_temp1_beep.dev_attr.attr, |
711 | |
712 | &dev_attr_alarms.attr, |
713 | &dev_attr_beep_enable.attr, |
714 | &dev_attr_beep_mask.attr, |
715 | NULL |
716 | }; |
717 | |
718 | static const struct attribute_group gl520_group = { |
719 | .attrs = gl520_attributes, |
720 | }; |
721 | |
722 | static struct attribute *gl520_attributes_in4[] = { |
723 | &sensor_dev_attr_in4_input.dev_attr.attr, |
724 | &sensor_dev_attr_in4_min.dev_attr.attr, |
725 | &sensor_dev_attr_in4_max.dev_attr.attr, |
726 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
727 | &sensor_dev_attr_in4_beep.dev_attr.attr, |
728 | NULL |
729 | }; |
730 | |
731 | static struct attribute *gl520_attributes_temp2[] = { |
732 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
733 | &sensor_dev_attr_temp2_max.dev_attr.attr, |
734 | &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, |
735 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
736 | &sensor_dev_attr_temp2_beep.dev_attr.attr, |
737 | NULL |
738 | }; |
739 | |
740 | static const struct attribute_group gl520_group_in4 = { |
741 | .attrs = gl520_attributes_in4, |
742 | }; |
743 | |
744 | static const struct attribute_group gl520_group_temp2 = { |
745 | .attrs = gl520_attributes_temp2, |
746 | }; |
747 | |
748 | |
749 | /* |
750 | * Real code |
751 | */ |
752 | |
753 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
754 | static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info) |
755 | { |
756 | struct i2c_adapter *adapter = client->adapter; |
757 | |
758 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | |
759 | I2C_FUNC_SMBUS_WORD_DATA)) |
760 | return -ENODEV; |
761 | |
762 | /* Determine the chip type. */ |
763 | if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) || |
764 | ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) || |
765 | ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) { |
766 | dev_dbg(&client->dev, "Unknown chip type, skipping\n"); |
767 | return -ENODEV; |
768 | } |
769 | |
770 | strlcpy(info->type, "gl520sm", I2C_NAME_SIZE); |
771 | |
772 | return 0; |
773 | } |
774 | |
775 | static int gl520_probe(struct i2c_client *client, |
776 | const struct i2c_device_id *id) |
777 | { |
778 | struct gl520_data *data; |
779 | int err; |
780 | |
781 | data = devm_kzalloc(&client->dev, sizeof(struct gl520_data), |
782 | GFP_KERNEL); |
783 | if (!data) |
784 | return -ENOMEM; |
785 | |
786 | i2c_set_clientdata(client, data); |
787 | mutex_init(&data->update_lock); |
788 | |
789 | /* Initialize the GL520SM chip */ |
790 | gl520_init_client(client); |
791 | |
792 | /* Register sysfs hooks */ |
793 | err = sysfs_create_group(&client->dev.kobj, &gl520_group); |
794 | if (err) |
795 | return err; |
796 | |
797 | if (data->two_temps) |
798 | err = sysfs_create_group(&client->dev.kobj, &gl520_group_temp2); |
799 | else |
800 | err = sysfs_create_group(&client->dev.kobj, &gl520_group_in4); |
801 | |
802 | if (err) |
803 | goto exit_remove_files; |
804 | |
805 | data->hwmon_dev = hwmon_device_register(&client->dev); |
806 | if (IS_ERR(data->hwmon_dev)) { |
807 | err = PTR_ERR(data->hwmon_dev); |
808 | goto exit_remove_files; |
809 | } |
810 | |
811 | return 0; |
812 | |
813 | exit_remove_files: |
814 | sysfs_remove_group(&client->dev.kobj, &gl520_group); |
815 | sysfs_remove_group(&client->dev.kobj, &gl520_group_in4); |
816 | sysfs_remove_group(&client->dev.kobj, &gl520_group_temp2); |
817 | return err; |
818 | } |
819 | |
820 | |
821 | /* Called when we have found a new GL520SM. */ |
822 | static void gl520_init_client(struct i2c_client *client) |
823 | { |
824 | struct gl520_data *data = i2c_get_clientdata(client); |
825 | u8 oldconf, conf; |
826 | |
827 | conf = oldconf = gl520_read_value(client, GL520_REG_CONF); |
828 | |
829 | data->alarm_mask = 0xff; |
830 | data->vrm = vid_which_vrm(); |
831 | |
832 | if (extra_sensor_type == 1) |
833 | conf &= ~0x10; |
834 | else if (extra_sensor_type == 2) |
835 | conf |= 0x10; |
836 | data->two_temps = !(conf & 0x10); |
837 | |
838 | /* If IRQ# is disabled, we can safely force comparator mode */ |
839 | if (!(conf & 0x20)) |
840 | conf &= 0xf7; |
841 | |
842 | /* Enable monitoring if needed */ |
843 | conf |= 0x40; |
844 | |
845 | if (conf != oldconf) |
846 | gl520_write_value(client, GL520_REG_CONF, conf); |
847 | |
848 | gl520_update_device(&(client->dev)); |
849 | |
850 | if (data->fan_min[0] == 0) |
851 | data->alarm_mask &= ~0x20; |
852 | if (data->fan_min[1] == 0) |
853 | data->alarm_mask &= ~0x40; |
854 | |
855 | data->beep_mask &= data->alarm_mask; |
856 | gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); |
857 | } |
858 | |
859 | static int gl520_remove(struct i2c_client *client) |
860 | { |
861 | struct gl520_data *data = i2c_get_clientdata(client); |
862 | |
863 | hwmon_device_unregister(data->hwmon_dev); |
864 | sysfs_remove_group(&client->dev.kobj, &gl520_group); |
865 | sysfs_remove_group(&client->dev.kobj, &gl520_group_in4); |
866 | sysfs_remove_group(&client->dev.kobj, &gl520_group_temp2); |
867 | |
868 | return 0; |
869 | } |
870 | |
871 | |
872 | /* |
873 | * Registers 0x07 to 0x0c are word-sized, others are byte-sized |
874 | * GL520 uses a high-byte first convention |
875 | */ |
876 | static int gl520_read_value(struct i2c_client *client, u8 reg) |
877 | { |
878 | if ((reg >= 0x07) && (reg <= 0x0c)) |
879 | return i2c_smbus_read_word_swapped(client, reg); |
880 | else |
881 | return i2c_smbus_read_byte_data(client, reg); |
882 | } |
883 | |
884 | static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value) |
885 | { |
886 | if ((reg >= 0x07) && (reg <= 0x0c)) |
887 | return i2c_smbus_write_word_swapped(client, reg, value); |
888 | else |
889 | return i2c_smbus_write_byte_data(client, reg, value); |
890 | } |
891 | |
892 | |
893 | static struct gl520_data *gl520_update_device(struct device *dev) |
894 | { |
895 | struct i2c_client *client = to_i2c_client(dev); |
896 | struct gl520_data *data = i2c_get_clientdata(client); |
897 | int val, i; |
898 | |
899 | mutex_lock(&data->update_lock); |
900 | |
901 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { |
902 | |
903 | dev_dbg(&client->dev, "Starting gl520sm update\n"); |
904 | |
905 | data->alarms = gl520_read_value(client, GL520_REG_ALARMS); |
906 | data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); |
907 | data->vid = gl520_read_value(client, |
908 | GL520_REG_VID_INPUT) & 0x1f; |
909 | |
910 | for (i = 0; i < 4; i++) { |
911 | data->in_input[i] = gl520_read_value(client, |
912 | GL520_REG_IN_INPUT[i]); |
913 | val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]); |
914 | data->in_min[i] = val & 0xff; |
915 | data->in_max[i] = (val >> 8) & 0xff; |
916 | } |
917 | |
918 | val = gl520_read_value(client, GL520_REG_FAN_INPUT); |
919 | data->fan_input[0] = (val >> 8) & 0xff; |
920 | data->fan_input[1] = val & 0xff; |
921 | |
922 | val = gl520_read_value(client, GL520_REG_FAN_MIN); |
923 | data->fan_min[0] = (val >> 8) & 0xff; |
924 | data->fan_min[1] = val & 0xff; |
925 | |
926 | data->temp_input[0] = gl520_read_value(client, |
927 | GL520_REG_TEMP_INPUT[0]); |
928 | data->temp_max[0] = gl520_read_value(client, |
929 | GL520_REG_TEMP_MAX[0]); |
930 | data->temp_max_hyst[0] = gl520_read_value(client, |
931 | GL520_REG_TEMP_MAX_HYST[0]); |
932 | |
933 | val = gl520_read_value(client, GL520_REG_FAN_DIV); |
934 | data->fan_div[0] = (val >> 6) & 0x03; |
935 | data->fan_div[1] = (val >> 4) & 0x03; |
936 | data->fan_off = (val >> 2) & 0x01; |
937 | |
938 | data->alarms &= data->alarm_mask; |
939 | |
940 | val = gl520_read_value(client, GL520_REG_CONF); |
941 | data->beep_enable = !((val >> 2) & 1); |
942 | |
943 | /* Temp1 and Vin4 are the same input */ |
944 | if (data->two_temps) { |
945 | data->temp_input[1] = gl520_read_value(client, |
946 | GL520_REG_TEMP_INPUT[1]); |
947 | data->temp_max[1] = gl520_read_value(client, |
948 | GL520_REG_TEMP_MAX[1]); |
949 | data->temp_max_hyst[1] = gl520_read_value(client, |
950 | GL520_REG_TEMP_MAX_HYST[1]); |
951 | } else { |
952 | data->in_input[4] = gl520_read_value(client, |
953 | GL520_REG_IN_INPUT[4]); |
954 | data->in_min[4] = gl520_read_value(client, |
955 | GL520_REG_IN_MIN[4]); |
956 | data->in_max[4] = gl520_read_value(client, |
957 | GL520_REG_IN_MAX[4]); |
958 | } |
959 | |
960 | data->last_updated = jiffies; |
961 | data->valid = 1; |
962 | } |
963 | |
964 | mutex_unlock(&data->update_lock); |
965 | |
966 | return data; |
967 | } |
968 | |
969 | module_i2c_driver(gl520_driver); |
970 | |
971 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " |
972 | "Kyösti Mälkki <kmalkki@cc.hut.fi>, " |
973 | "Maarten Deprez <maartendeprez@users.sourceforge.net>"); |
974 | MODULE_DESCRIPTION("GL520SM driver"); |
975 | MODULE_LICENSE("GPL"); |
976 |
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