1 /*
2 * pc87360.c - Part of lm_sensors, Linux kernel modules
3 * for hardware monitoring
4 * Copyright (C) 2004, 2007 Jean Delvare <jdelvare@suse.de>
5 *
6 * Copied from smsc47m1.c:
7 * Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
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 * Supports the following chips:
24 *
25 * Chip #vin #fan #pwm #temp devid
26 * PC87360 - 2 2 - 0xE1
27 * PC87363 - 2 2 - 0xE8
28 * PC87364 - 3 3 - 0xE4
29 * PC87365 11 3 3 2 0xE5
30 * PC87366 11 3 3 3-4 0xE9
31 *
32 * This driver assumes that no more than one chip is present, and one of
33 * the standard Super-I/O addresses is used (0x2E/0x2F or 0x4E/0x4F).
34 */
35
36 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
37
38 #include <linux/module.h>
39 #include <linux/init.h>
40 #include <linux/slab.h>
41 #include <linux/jiffies.h>
42 #include <linux/platform_device.h>
43 #include <linux/hwmon.h>
44 #include <linux/hwmon-sysfs.h>
45 #include <linux/hwmon-vid.h>
46 #include <linux/err.h>
47 #include <linux/mutex.h>
48 #include <linux/acpi.h>
49 #include <linux/io.h>
50
51 static u8 devid;
52 static struct platform_device *pdev;
53 static unsigned short extra_isa[3];
54 static u8 confreg[4];
55
56 static int init = 1;
57 module_param(init, int, 0);
58 MODULE_PARM_DESC(init,
59 "Chip initialization level:\n"
60 " 0: None\n"
61 "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
62 " 2: Forcibly enable all voltage and temperature channels, except in9\n"
63 " 3: Forcibly enable all voltage and temperature channels, including in9");
64
65 static unsigned short force_id;
66 module_param(force_id, ushort, 0);
67 MODULE_PARM_DESC(force_id, "Override the detected device ID");
68
69 /*
70 * Super-I/O registers and operations
71 */
72
73 #define DEV 0x07 /* Register: Logical device select */
74 #define DEVID 0x20 /* Register: Device ID */
75 #define ACT 0x30 /* Register: Device activation */
76 #define BASE 0x60 /* Register: Base address */
77
78 #define FSCM 0x09 /* Logical device: fans */
79 #define VLM 0x0d /* Logical device: voltages */
80 #define TMS 0x0e /* Logical device: temperatures */
81 #define LDNI_MAX 3
82 static const u8 logdev[LDNI_MAX] = { FSCM, VLM, TMS };
83
84 #define LD_FAN 0
85 #define LD_IN 1
86 #define LD_TEMP 2
87
superio_outb(int sioaddr,int reg,int val)88 static inline void superio_outb(int sioaddr, int reg, int val)
89 {
90 outb(reg, sioaddr);
91 outb(val, sioaddr + 1);
92 }
93
superio_inb(int sioaddr,int reg)94 static inline int superio_inb(int sioaddr, int reg)
95 {
96 outb(reg, sioaddr);
97 return inb(sioaddr + 1);
98 }
99
superio_exit(int sioaddr)100 static inline void superio_exit(int sioaddr)
101 {
102 outb(0x02, sioaddr);
103 outb(0x02, sioaddr + 1);
104 }
105
106 /*
107 * Logical devices
108 */
109
110 #define PC87360_EXTENT 0x10
111 #define PC87365_REG_BANK 0x09
112 #define NO_BANK 0xff
113
114 /*
115 * Fan registers and conversions
116 */
117
118 /* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
119 #define PC87360_REG_PRESCALE(nr) (0x00 + 2 * (nr))
120 #define PC87360_REG_PWM(nr) (0x01 + 2 * (nr))
121 #define PC87360_REG_FAN_MIN(nr) (0x06 + 3 * (nr))
122 #define PC87360_REG_FAN(nr) (0x07 + 3 * (nr))
123 #define PC87360_REG_FAN_STATUS(nr) (0x08 + 3 * (nr))
124
125 #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : \
126 480000 / ((val) * (div)))
127 #define FAN_TO_REG(val, div) ((val) <= 100 ? 0 : \
128 480000 / ((val) * (div)))
129 #define FAN_DIV_FROM_REG(val) (1 << (((val) >> 5) & 0x03))
130 #define FAN_STATUS_FROM_REG(val) ((val) & 0x07)
131
132 #define FAN_CONFIG_MONITOR(val, nr) (((val) >> (2 + (nr) * 3)) & 1)
133 #define FAN_CONFIG_CONTROL(val, nr) (((val) >> (3 + (nr) * 3)) & 1)
134 #define FAN_CONFIG_INVERT(val, nr) (((val) >> (4 + (nr) * 3)) & 1)
135
136 #define PWM_FROM_REG(val, inv) ((inv) ? 255 - (val) : (val))
PWM_TO_REG(int val,int inv)137 static inline u8 PWM_TO_REG(int val, int inv)
138 {
139 if (inv)
140 val = 255 - val;
141 if (val < 0)
142 return 0;
143 if (val > 255)
144 return 255;
145 return val;
146 }
147
148 /*
149 * Voltage registers and conversions
150 */
151
152 #define PC87365_REG_IN_CONVRATE 0x07
153 #define PC87365_REG_IN_CONFIG 0x08
154 #define PC87365_REG_IN 0x0B
155 #define PC87365_REG_IN_MIN 0x0D
156 #define PC87365_REG_IN_MAX 0x0C
157 #define PC87365_REG_IN_STATUS 0x0A
158 #define PC87365_REG_IN_ALARMS1 0x00
159 #define PC87365_REG_IN_ALARMS2 0x01
160 #define PC87365_REG_VID 0x06
161
162 #define IN_FROM_REG(val, ref) (((val) * (ref) + 128) / 256)
163 #define IN_TO_REG(val, ref) ((val) < 0 ? 0 : \
164 (val) * 256 >= (ref) * 255 ? 255 : \
165 ((val) * 256 + (ref) / 2) / (ref))
166
167 /*
168 * Temperature registers and conversions
169 */
170
171 #define PC87365_REG_TEMP_CONFIG 0x08
172 #define PC87365_REG_TEMP 0x0B
173 #define PC87365_REG_TEMP_MIN 0x0D
174 #define PC87365_REG_TEMP_MAX 0x0C
175 #define PC87365_REG_TEMP_CRIT 0x0E
176 #define PC87365_REG_TEMP_STATUS 0x0A
177 #define PC87365_REG_TEMP_ALARMS 0x00
178
179 #define TEMP_FROM_REG(val) ((val) * 1000)
180 #define TEMP_TO_REG(val) ((val) < -55000 ? -55 : \
181 (val) > 127000 ? 127 : \
182 (val) < 0 ? ((val) - 500) / 1000 : \
183 ((val) + 500) / 1000)
184
185 /*
186 * Device data
187 */
188
189 struct pc87360_data {
190 const char *name;
191 struct device *hwmon_dev;
192 struct mutex lock;
193 struct mutex update_lock;
194 char valid; /* !=0 if following fields are valid */
195 unsigned long last_updated; /* In jiffies */
196
197 int address[3];
198
199 u8 fannr, innr, tempnr;
200
201 u8 fan[3]; /* Register value */
202 u8 fan_min[3]; /* Register value */
203 u8 fan_status[3]; /* Register value */
204 u8 pwm[3]; /* Register value */
205 u16 fan_conf; /* Configuration register values, combined */
206
207 u16 in_vref; /* 1 mV/bit */
208 u8 in[14]; /* Register value */
209 u8 in_min[14]; /* Register value */
210 u8 in_max[14]; /* Register value */
211 u8 in_crit[3]; /* Register value */
212 u8 in_status[14]; /* Register value */
213 u16 in_alarms; /* Register values, combined, masked */
214 u8 vid_conf; /* Configuration register value */
215 u8 vrm;
216 u8 vid; /* Register value */
217
218 s8 temp[3]; /* Register value */
219 s8 temp_min[3]; /* Register value */
220 s8 temp_max[3]; /* Register value */
221 s8 temp_crit[3]; /* Register value */
222 u8 temp_status[3]; /* Register value */
223 u8 temp_alarms; /* Register value, masked */
224 };
225
226 /*
227 * Functions declaration
228 */
229
230 static int pc87360_probe(struct platform_device *pdev);
231 static int pc87360_remove(struct platform_device *pdev);
232
233 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
234 u8 reg);
235 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
236 u8 reg, u8 value);
237 static void pc87360_init_device(struct platform_device *pdev,
238 int use_thermistors);
239 static struct pc87360_data *pc87360_update_device(struct device *dev);
240
241 /*
242 * Driver data
243 */
244
245 static struct platform_driver pc87360_driver = {
246 .driver = {
247 .name = "pc87360",
248 },
249 .probe = pc87360_probe,
250 .remove = pc87360_remove,
251 };
252
253 /*
254 * Sysfs stuff
255 */
256
show_fan_input(struct device * dev,struct device_attribute * devattr,char * buf)257 static ssize_t show_fan_input(struct device *dev,
258 struct device_attribute *devattr, char *buf)
259 {
260 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
261 struct pc87360_data *data = pc87360_update_device(dev);
262 return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[attr->index],
263 FAN_DIV_FROM_REG(data->fan_status[attr->index])));
264 }
show_fan_min(struct device * dev,struct device_attribute * devattr,char * buf)265 static ssize_t show_fan_min(struct device *dev,
266 struct device_attribute *devattr, char *buf)
267 {
268 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
269 struct pc87360_data *data = pc87360_update_device(dev);
270 return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[attr->index],
271 FAN_DIV_FROM_REG(data->fan_status[attr->index])));
272 }
show_fan_div(struct device * dev,struct device_attribute * devattr,char * buf)273 static ssize_t show_fan_div(struct device *dev,
274 struct device_attribute *devattr, char *buf)
275 {
276 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
277 struct pc87360_data *data = pc87360_update_device(dev);
278 return sprintf(buf, "%u\n",
279 FAN_DIV_FROM_REG(data->fan_status[attr->index]));
280 }
show_fan_status(struct device * dev,struct device_attribute * devattr,char * buf)281 static ssize_t show_fan_status(struct device *dev,
282 struct device_attribute *devattr, char *buf)
283 {
284 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
285 struct pc87360_data *data = pc87360_update_device(dev);
286 return sprintf(buf, "%u\n",
287 FAN_STATUS_FROM_REG(data->fan_status[attr->index]));
288 }
set_fan_min(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)289 static ssize_t set_fan_min(struct device *dev,
290 struct device_attribute *devattr, const char *buf,
291 size_t count)
292 {
293 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
294 struct pc87360_data *data = dev_get_drvdata(dev);
295 long fan_min;
296 int err;
297
298 err = kstrtol(buf, 10, &fan_min);
299 if (err)
300 return err;
301
302 mutex_lock(&data->update_lock);
303 fan_min = FAN_TO_REG(fan_min,
304 FAN_DIV_FROM_REG(data->fan_status[attr->index]));
305
306 /* If it wouldn't fit, change clock divisor */
307 while (fan_min > 255
308 && (data->fan_status[attr->index] & 0x60) != 0x60) {
309 fan_min >>= 1;
310 data->fan[attr->index] >>= 1;
311 data->fan_status[attr->index] += 0x20;
312 }
313 data->fan_min[attr->index] = fan_min > 255 ? 255 : fan_min;
314 pc87360_write_value(data, LD_FAN, NO_BANK,
315 PC87360_REG_FAN_MIN(attr->index),
316 data->fan_min[attr->index]);
317
318 /* Write new divider, preserve alarm bits */
319 pc87360_write_value(data, LD_FAN, NO_BANK,
320 PC87360_REG_FAN_STATUS(attr->index),
321 data->fan_status[attr->index] & 0xF9);
322 mutex_unlock(&data->update_lock);
323
324 return count;
325 }
326
327 static struct sensor_device_attribute fan_input[] = {
328 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0),
329 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1),
330 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2),
331 };
332 static struct sensor_device_attribute fan_status[] = {
333 SENSOR_ATTR(fan1_status, S_IRUGO, show_fan_status, NULL, 0),
334 SENSOR_ATTR(fan2_status, S_IRUGO, show_fan_status, NULL, 1),
335 SENSOR_ATTR(fan3_status, S_IRUGO, show_fan_status, NULL, 2),
336 };
337 static struct sensor_device_attribute fan_div[] = {
338 SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
339 SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
340 SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
341 };
342 static struct sensor_device_attribute fan_min[] = {
343 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 0),
344 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 1),
345 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 2),
346 };
347
348 #define FAN_UNIT_ATTRS(X) \
349 { &fan_input[X].dev_attr.attr, \
350 &fan_status[X].dev_attr.attr, \
351 &fan_div[X].dev_attr.attr, \
352 &fan_min[X].dev_attr.attr, \
353 NULL \
354 }
355
show_pwm(struct device * dev,struct device_attribute * devattr,char * buf)356 static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
357 char *buf)
358 {
359 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
360 struct pc87360_data *data = pc87360_update_device(dev);
361 return sprintf(buf, "%u\n",
362 PWM_FROM_REG(data->pwm[attr->index],
363 FAN_CONFIG_INVERT(data->fan_conf,
364 attr->index)));
365 }
set_pwm(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)366 static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
367 const char *buf, size_t count)
368 {
369 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
370 struct pc87360_data *data = dev_get_drvdata(dev);
371 long val;
372 int err;
373
374 err = kstrtol(buf, 10, &val);
375 if (err)
376 return err;
377
378 mutex_lock(&data->update_lock);
379 data->pwm[attr->index] = PWM_TO_REG(val,
380 FAN_CONFIG_INVERT(data->fan_conf, attr->index));
381 pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(attr->index),
382 data->pwm[attr->index]);
383 mutex_unlock(&data->update_lock);
384 return count;
385 }
386
387 static struct sensor_device_attribute pwm[] = {
388 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0),
389 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1),
390 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2),
391 };
392
393 static struct attribute *pc8736x_fan_attr[][5] = {
394 FAN_UNIT_ATTRS(0),
395 FAN_UNIT_ATTRS(1),
396 FAN_UNIT_ATTRS(2)
397 };
398
399 static const struct attribute_group pc8736x_fan_attr_group[] = {
400 { .attrs = pc8736x_fan_attr[0], },
401 { .attrs = pc8736x_fan_attr[1], },
402 { .attrs = pc8736x_fan_attr[2], },
403 };
404
show_in_input(struct device * dev,struct device_attribute * devattr,char * buf)405 static ssize_t show_in_input(struct device *dev,
406 struct device_attribute *devattr, char *buf)
407 {
408 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
409 struct pc87360_data *data = pc87360_update_device(dev);
410 return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
411 data->in_vref));
412 }
show_in_min(struct device * dev,struct device_attribute * devattr,char * buf)413 static ssize_t show_in_min(struct device *dev,
414 struct device_attribute *devattr, char *buf)
415 {
416 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
417 struct pc87360_data *data = pc87360_update_device(dev);
418 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
419 data->in_vref));
420 }
show_in_max(struct device * dev,struct device_attribute * devattr,char * buf)421 static ssize_t show_in_max(struct device *dev,
422 struct device_attribute *devattr, char *buf)
423 {
424 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
425 struct pc87360_data *data = pc87360_update_device(dev);
426 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
427 data->in_vref));
428 }
show_in_status(struct device * dev,struct device_attribute * devattr,char * buf)429 static ssize_t show_in_status(struct device *dev,
430 struct device_attribute *devattr, char *buf)
431 {
432 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
433 struct pc87360_data *data = pc87360_update_device(dev);
434 return sprintf(buf, "%u\n", data->in_status[attr->index]);
435 }
set_in_min(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)436 static ssize_t set_in_min(struct device *dev, struct device_attribute *devattr,
437 const char *buf, size_t count)
438 {
439 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
440 struct pc87360_data *data = dev_get_drvdata(dev);
441 long val;
442 int err;
443
444 err = kstrtol(buf, 10, &val);
445 if (err)
446 return err;
447
448 mutex_lock(&data->update_lock);
449 data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
450 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MIN,
451 data->in_min[attr->index]);
452 mutex_unlock(&data->update_lock);
453 return count;
454 }
set_in_max(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)455 static ssize_t set_in_max(struct device *dev, struct device_attribute *devattr,
456 const char *buf, size_t count)
457 {
458 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
459 struct pc87360_data *data = dev_get_drvdata(dev);
460 long val;
461 int err;
462
463 err = kstrtol(buf, 10, &val);
464 if (err)
465 return err;
466
467 mutex_lock(&data->update_lock);
468 data->in_max[attr->index] = IN_TO_REG(val,
469 data->in_vref);
470 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MAX,
471 data->in_max[attr->index]);
472 mutex_unlock(&data->update_lock);
473 return count;
474 }
475
476 static struct sensor_device_attribute in_input[] = {
477 SENSOR_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0),
478 SENSOR_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1),
479 SENSOR_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2),
480 SENSOR_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3),
481 SENSOR_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4),
482 SENSOR_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5),
483 SENSOR_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6),
484 SENSOR_ATTR(in7_input, S_IRUGO, show_in_input, NULL, 7),
485 SENSOR_ATTR(in8_input, S_IRUGO, show_in_input, NULL, 8),
486 SENSOR_ATTR(in9_input, S_IRUGO, show_in_input, NULL, 9),
487 SENSOR_ATTR(in10_input, S_IRUGO, show_in_input, NULL, 10),
488 };
489 static struct sensor_device_attribute in_status[] = {
490 SENSOR_ATTR(in0_status, S_IRUGO, show_in_status, NULL, 0),
491 SENSOR_ATTR(in1_status, S_IRUGO, show_in_status, NULL, 1),
492 SENSOR_ATTR(in2_status, S_IRUGO, show_in_status, NULL, 2),
493 SENSOR_ATTR(in3_status, S_IRUGO, show_in_status, NULL, 3),
494 SENSOR_ATTR(in4_status, S_IRUGO, show_in_status, NULL, 4),
495 SENSOR_ATTR(in5_status, S_IRUGO, show_in_status, NULL, 5),
496 SENSOR_ATTR(in6_status, S_IRUGO, show_in_status, NULL, 6),
497 SENSOR_ATTR(in7_status, S_IRUGO, show_in_status, NULL, 7),
498 SENSOR_ATTR(in8_status, S_IRUGO, show_in_status, NULL, 8),
499 SENSOR_ATTR(in9_status, S_IRUGO, show_in_status, NULL, 9),
500 SENSOR_ATTR(in10_status, S_IRUGO, show_in_status, NULL, 10),
501 };
502 static struct sensor_device_attribute in_min[] = {
503 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 0),
504 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 1),
505 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 2),
506 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 3),
507 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 4),
508 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 5),
509 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 6),
510 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 7),
511 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 8),
512 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 9),
513 SENSOR_ATTR(in10_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 10),
514 };
515 static struct sensor_device_attribute in_max[] = {
516 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 0),
517 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 1),
518 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 2),
519 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 3),
520 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 4),
521 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 5),
522 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 6),
523 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 7),
524 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 8),
525 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 9),
526 SENSOR_ATTR(in10_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 10),
527 };
528
529 /* (temp & vin) channel status register alarm bits (pdf sec.11.5.12) */
530 #define CHAN_ALM_MIN 0x02 /* min limit crossed */
531 #define CHAN_ALM_MAX 0x04 /* max limit exceeded */
532 #define TEMP_ALM_CRIT 0x08 /* temp crit exceeded (temp only) */
533
534 /*
535 * show_in_min/max_alarm() reads data from the per-channel status
536 * register (sec 11.5.12), not the vin event status registers (sec
537 * 11.5.2) that (legacy) show_in_alarm() resds (via data->in_alarms)
538 */
539
show_in_min_alarm(struct device * dev,struct device_attribute * devattr,char * buf)540 static ssize_t show_in_min_alarm(struct device *dev,
541 struct device_attribute *devattr, char *buf)
542 {
543 struct pc87360_data *data = pc87360_update_device(dev);
544 unsigned nr = to_sensor_dev_attr(devattr)->index;
545
546 return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
547 }
show_in_max_alarm(struct device * dev,struct device_attribute * devattr,char * buf)548 static ssize_t show_in_max_alarm(struct device *dev,
549 struct device_attribute *devattr, char *buf)
550 {
551 struct pc87360_data *data = pc87360_update_device(dev);
552 unsigned nr = to_sensor_dev_attr(devattr)->index;
553
554 return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
555 }
556
557 static struct sensor_device_attribute in_min_alarm[] = {
558 SENSOR_ATTR(in0_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 0),
559 SENSOR_ATTR(in1_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 1),
560 SENSOR_ATTR(in2_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 2),
561 SENSOR_ATTR(in3_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 3),
562 SENSOR_ATTR(in4_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 4),
563 SENSOR_ATTR(in5_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 5),
564 SENSOR_ATTR(in6_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 6),
565 SENSOR_ATTR(in7_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 7),
566 SENSOR_ATTR(in8_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 8),
567 SENSOR_ATTR(in9_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 9),
568 SENSOR_ATTR(in10_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 10),
569 };
570 static struct sensor_device_attribute in_max_alarm[] = {
571 SENSOR_ATTR(in0_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 0),
572 SENSOR_ATTR(in1_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 1),
573 SENSOR_ATTR(in2_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 2),
574 SENSOR_ATTR(in3_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 3),
575 SENSOR_ATTR(in4_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 4),
576 SENSOR_ATTR(in5_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 5),
577 SENSOR_ATTR(in6_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 6),
578 SENSOR_ATTR(in7_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 7),
579 SENSOR_ATTR(in8_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 8),
580 SENSOR_ATTR(in9_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 9),
581 SENSOR_ATTR(in10_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 10),
582 };
583
584 #define VIN_UNIT_ATTRS(X) \
585 &in_input[X].dev_attr.attr, \
586 &in_status[X].dev_attr.attr, \
587 &in_min[X].dev_attr.attr, \
588 &in_max[X].dev_attr.attr, \
589 &in_min_alarm[X].dev_attr.attr, \
590 &in_max_alarm[X].dev_attr.attr
591
cpu0_vid_show(struct device * dev,struct device_attribute * attr,char * buf)592 static ssize_t cpu0_vid_show(struct device *dev,
593 struct device_attribute *attr, char *buf)
594 {
595 struct pc87360_data *data = pc87360_update_device(dev);
596 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
597 }
598 static DEVICE_ATTR_RO(cpu0_vid);
599
vrm_show(struct device * dev,struct device_attribute * attr,char * buf)600 static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
601 char *buf)
602 {
603 struct pc87360_data *data = dev_get_drvdata(dev);
604 return sprintf(buf, "%u\n", data->vrm);
605 }
vrm_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)606 static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
607 const char *buf, size_t count)
608 {
609 struct pc87360_data *data = dev_get_drvdata(dev);
610 unsigned long val;
611 int err;
612
613 err = kstrtoul(buf, 10, &val);
614 if (err)
615 return err;
616
617 if (val > 255)
618 return -EINVAL;
619
620 data->vrm = val;
621 return count;
622 }
623 static DEVICE_ATTR_RW(vrm);
624
alarms_in_show(struct device * dev,struct device_attribute * attr,char * buf)625 static ssize_t alarms_in_show(struct device *dev,
626 struct device_attribute *attr, char *buf)
627 {
628 struct pc87360_data *data = pc87360_update_device(dev);
629 return sprintf(buf, "%u\n", data->in_alarms);
630 }
631 static DEVICE_ATTR_RO(alarms_in);
632
633 static struct attribute *pc8736x_vin_attr_array[] = {
634 VIN_UNIT_ATTRS(0),
635 VIN_UNIT_ATTRS(1),
636 VIN_UNIT_ATTRS(2),
637 VIN_UNIT_ATTRS(3),
638 VIN_UNIT_ATTRS(4),
639 VIN_UNIT_ATTRS(5),
640 VIN_UNIT_ATTRS(6),
641 VIN_UNIT_ATTRS(7),
642 VIN_UNIT_ATTRS(8),
643 VIN_UNIT_ATTRS(9),
644 VIN_UNIT_ATTRS(10),
645 &dev_attr_cpu0_vid.attr,
646 &dev_attr_vrm.attr,
647 &dev_attr_alarms_in.attr,
648 NULL
649 };
650 static const struct attribute_group pc8736x_vin_group = {
651 .attrs = pc8736x_vin_attr_array,
652 };
653
show_therm_input(struct device * dev,struct device_attribute * devattr,char * buf)654 static ssize_t show_therm_input(struct device *dev,
655 struct device_attribute *devattr, char *buf)
656 {
657 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
658 struct pc87360_data *data = pc87360_update_device(dev);
659 return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
660 data->in_vref));
661 }
show_therm_min(struct device * dev,struct device_attribute * devattr,char * buf)662 static ssize_t show_therm_min(struct device *dev,
663 struct device_attribute *devattr, char *buf)
664 {
665 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
666 struct pc87360_data *data = pc87360_update_device(dev);
667 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
668 data->in_vref));
669 }
show_therm_max(struct device * dev,struct device_attribute * devattr,char * buf)670 static ssize_t show_therm_max(struct device *dev,
671 struct device_attribute *devattr, char *buf)
672 {
673 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
674 struct pc87360_data *data = pc87360_update_device(dev);
675 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
676 data->in_vref));
677 }
show_therm_crit(struct device * dev,struct device_attribute * devattr,char * buf)678 static ssize_t show_therm_crit(struct device *dev,
679 struct device_attribute *devattr, char *buf)
680 {
681 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
682 struct pc87360_data *data = pc87360_update_device(dev);
683 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[attr->index-11],
684 data->in_vref));
685 }
show_therm_status(struct device * dev,struct device_attribute * devattr,char * buf)686 static ssize_t show_therm_status(struct device *dev,
687 struct device_attribute *devattr, char *buf)
688 {
689 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
690 struct pc87360_data *data = pc87360_update_device(dev);
691 return sprintf(buf, "%u\n", data->in_status[attr->index]);
692 }
693
set_therm_min(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)694 static ssize_t set_therm_min(struct device *dev,
695 struct device_attribute *devattr,
696 const char *buf, size_t count)
697 {
698 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
699 struct pc87360_data *data = dev_get_drvdata(dev);
700 long val;
701 int err;
702
703 err = kstrtol(buf, 10, &val);
704 if (err)
705 return err;
706
707 mutex_lock(&data->update_lock);
708 data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
709 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MIN,
710 data->in_min[attr->index]);
711 mutex_unlock(&data->update_lock);
712 return count;
713 }
714
set_therm_max(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)715 static ssize_t set_therm_max(struct device *dev,
716 struct device_attribute *devattr,
717 const char *buf, size_t count)
718 {
719 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
720 struct pc87360_data *data = dev_get_drvdata(dev);
721 long val;
722 int err;
723
724 err = kstrtol(buf, 10, &val);
725 if (err)
726 return err;
727
728 mutex_lock(&data->update_lock);
729 data->in_max[attr->index] = IN_TO_REG(val, data->in_vref);
730 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MAX,
731 data->in_max[attr->index]);
732 mutex_unlock(&data->update_lock);
733 return count;
734 }
set_therm_crit(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)735 static ssize_t set_therm_crit(struct device *dev,
736 struct device_attribute *devattr,
737 const char *buf, size_t count)
738 {
739 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
740 struct pc87360_data *data = dev_get_drvdata(dev);
741 long val;
742 int err;
743
744 err = kstrtol(buf, 10, &val);
745 if (err)
746 return err;
747
748 mutex_lock(&data->update_lock);
749 data->in_crit[attr->index-11] = IN_TO_REG(val, data->in_vref);
750 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_CRIT,
751 data->in_crit[attr->index-11]);
752 mutex_unlock(&data->update_lock);
753 return count;
754 }
755
756 /*
757 * the +11 term below reflects the fact that VLM units 11,12,13 are
758 * used in the chip to measure voltage across the thermistors
759 */
760 static struct sensor_device_attribute therm_input[] = {
761 SENSOR_ATTR(temp4_input, S_IRUGO, show_therm_input, NULL, 0 + 11),
762 SENSOR_ATTR(temp5_input, S_IRUGO, show_therm_input, NULL, 1 + 11),
763 SENSOR_ATTR(temp6_input, S_IRUGO, show_therm_input, NULL, 2 + 11),
764 };
765 static struct sensor_device_attribute therm_status[] = {
766 SENSOR_ATTR(temp4_status, S_IRUGO, show_therm_status, NULL, 0 + 11),
767 SENSOR_ATTR(temp5_status, S_IRUGO, show_therm_status, NULL, 1 + 11),
768 SENSOR_ATTR(temp6_status, S_IRUGO, show_therm_status, NULL, 2 + 11),
769 };
770 static struct sensor_device_attribute therm_min[] = {
771 SENSOR_ATTR(temp4_min, S_IRUGO | S_IWUSR,
772 show_therm_min, set_therm_min, 0 + 11),
773 SENSOR_ATTR(temp5_min, S_IRUGO | S_IWUSR,
774 show_therm_min, set_therm_min, 1 + 11),
775 SENSOR_ATTR(temp6_min, S_IRUGO | S_IWUSR,
776 show_therm_min, set_therm_min, 2 + 11),
777 };
778 static struct sensor_device_attribute therm_max[] = {
779 SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR,
780 show_therm_max, set_therm_max, 0 + 11),
781 SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR,
782 show_therm_max, set_therm_max, 1 + 11),
783 SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR,
784 show_therm_max, set_therm_max, 2 + 11),
785 };
786 static struct sensor_device_attribute therm_crit[] = {
787 SENSOR_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
788 show_therm_crit, set_therm_crit, 0 + 11),
789 SENSOR_ATTR(temp5_crit, S_IRUGO | S_IWUSR,
790 show_therm_crit, set_therm_crit, 1 + 11),
791 SENSOR_ATTR(temp6_crit, S_IRUGO | S_IWUSR,
792 show_therm_crit, set_therm_crit, 2 + 11),
793 };
794
795 /*
796 * show_therm_min/max_alarm() reads data from the per-channel voltage
797 * status register (sec 11.5.12)
798 */
799
show_therm_min_alarm(struct device * dev,struct device_attribute * devattr,char * buf)800 static ssize_t show_therm_min_alarm(struct device *dev,
801 struct device_attribute *devattr, char *buf)
802 {
803 struct pc87360_data *data = pc87360_update_device(dev);
804 unsigned nr = to_sensor_dev_attr(devattr)->index;
805
806 return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
807 }
show_therm_max_alarm(struct device * dev,struct device_attribute * devattr,char * buf)808 static ssize_t show_therm_max_alarm(struct device *dev,
809 struct device_attribute *devattr, char *buf)
810 {
811 struct pc87360_data *data = pc87360_update_device(dev);
812 unsigned nr = to_sensor_dev_attr(devattr)->index;
813
814 return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
815 }
show_therm_crit_alarm(struct device * dev,struct device_attribute * devattr,char * buf)816 static ssize_t show_therm_crit_alarm(struct device *dev,
817 struct device_attribute *devattr, char *buf)
818 {
819 struct pc87360_data *data = pc87360_update_device(dev);
820 unsigned nr = to_sensor_dev_attr(devattr)->index;
821
822 return sprintf(buf, "%u\n", !!(data->in_status[nr] & TEMP_ALM_CRIT));
823 }
824
825 static struct sensor_device_attribute therm_min_alarm[] = {
826 SENSOR_ATTR(temp4_min_alarm, S_IRUGO,
827 show_therm_min_alarm, NULL, 0 + 11),
828 SENSOR_ATTR(temp5_min_alarm, S_IRUGO,
829 show_therm_min_alarm, NULL, 1 + 11),
830 SENSOR_ATTR(temp6_min_alarm, S_IRUGO,
831 show_therm_min_alarm, NULL, 2 + 11),
832 };
833 static struct sensor_device_attribute therm_max_alarm[] = {
834 SENSOR_ATTR(temp4_max_alarm, S_IRUGO,
835 show_therm_max_alarm, NULL, 0 + 11),
836 SENSOR_ATTR(temp5_max_alarm, S_IRUGO,
837 show_therm_max_alarm, NULL, 1 + 11),
838 SENSOR_ATTR(temp6_max_alarm, S_IRUGO,
839 show_therm_max_alarm, NULL, 2 + 11),
840 };
841 static struct sensor_device_attribute therm_crit_alarm[] = {
842 SENSOR_ATTR(temp4_crit_alarm, S_IRUGO,
843 show_therm_crit_alarm, NULL, 0 + 11),
844 SENSOR_ATTR(temp5_crit_alarm, S_IRUGO,
845 show_therm_crit_alarm, NULL, 1 + 11),
846 SENSOR_ATTR(temp6_crit_alarm, S_IRUGO,
847 show_therm_crit_alarm, NULL, 2 + 11),
848 };
849
850 #define THERM_UNIT_ATTRS(X) \
851 &therm_input[X].dev_attr.attr, \
852 &therm_status[X].dev_attr.attr, \
853 &therm_min[X].dev_attr.attr, \
854 &therm_max[X].dev_attr.attr, \
855 &therm_crit[X].dev_attr.attr, \
856 &therm_min_alarm[X].dev_attr.attr, \
857 &therm_max_alarm[X].dev_attr.attr, \
858 &therm_crit_alarm[X].dev_attr.attr
859
860 static struct attribute *pc8736x_therm_attr_array[] = {
861 THERM_UNIT_ATTRS(0),
862 THERM_UNIT_ATTRS(1),
863 THERM_UNIT_ATTRS(2),
864 NULL
865 };
866 static const struct attribute_group pc8736x_therm_group = {
867 .attrs = pc8736x_therm_attr_array,
868 };
869
show_temp_input(struct device * dev,struct device_attribute * devattr,char * buf)870 static ssize_t show_temp_input(struct device *dev,
871 struct device_attribute *devattr, char *buf)
872 {
873 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
874 struct pc87360_data *data = pc87360_update_device(dev);
875 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
876 }
877
show_temp_min(struct device * dev,struct device_attribute * devattr,char * buf)878 static ssize_t show_temp_min(struct device *dev,
879 struct device_attribute *devattr, char *buf)
880 {
881 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
882 struct pc87360_data *data = pc87360_update_device(dev);
883 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[attr->index]));
884 }
885
show_temp_max(struct device * dev,struct device_attribute * devattr,char * buf)886 static ssize_t show_temp_max(struct device *dev,
887 struct device_attribute *devattr, char *buf)
888 {
889 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
890 struct pc87360_data *data = pc87360_update_device(dev);
891 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[attr->index]));
892 }
893
show_temp_crit(struct device * dev,struct device_attribute * devattr,char * buf)894 static ssize_t show_temp_crit(struct device *dev,
895 struct device_attribute *devattr, char *buf)
896 {
897 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
898 struct pc87360_data *data = pc87360_update_device(dev);
899 return sprintf(buf, "%d\n",
900 TEMP_FROM_REG(data->temp_crit[attr->index]));
901 }
902
show_temp_status(struct device * dev,struct device_attribute * devattr,char * buf)903 static ssize_t show_temp_status(struct device *dev,
904 struct device_attribute *devattr, char *buf)
905 {
906 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
907 struct pc87360_data *data = pc87360_update_device(dev);
908 return sprintf(buf, "%d\n", data->temp_status[attr->index]);
909 }
910
set_temp_min(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)911 static ssize_t set_temp_min(struct device *dev,
912 struct device_attribute *devattr,
913 const char *buf, size_t count)
914 {
915 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
916 struct pc87360_data *data = dev_get_drvdata(dev);
917 long val;
918 int err;
919
920 err = kstrtol(buf, 10, &val);
921 if (err)
922 return err;
923
924 mutex_lock(&data->update_lock);
925 data->temp_min[attr->index] = TEMP_TO_REG(val);
926 pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MIN,
927 data->temp_min[attr->index]);
928 mutex_unlock(&data->update_lock);
929 return count;
930 }
931
set_temp_max(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)932 static ssize_t set_temp_max(struct device *dev,
933 struct device_attribute *devattr,
934 const char *buf, size_t count)
935 {
936 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
937 struct pc87360_data *data = dev_get_drvdata(dev);
938 long val;
939 int err;
940
941 err = kstrtol(buf, 10, &val);
942 if (err)
943 return err;
944
945 mutex_lock(&data->update_lock);
946 data->temp_max[attr->index] = TEMP_TO_REG(val);
947 pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MAX,
948 data->temp_max[attr->index]);
949 mutex_unlock(&data->update_lock);
950 return count;
951 }
952
set_temp_crit(struct device * dev,struct device_attribute * devattr,const char * buf,size_t count)953 static ssize_t set_temp_crit(struct device *dev,
954 struct device_attribute *devattr, const char *buf,
955 size_t count)
956 {
957 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
958 struct pc87360_data *data = dev_get_drvdata(dev);
959 long val;
960 int err;
961
962 err = kstrtol(buf, 10, &val);
963 if (err)
964 return err;
965
966 mutex_lock(&data->update_lock);
967 data->temp_crit[attr->index] = TEMP_TO_REG(val);
968 pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_CRIT,
969 data->temp_crit[attr->index]);
970 mutex_unlock(&data->update_lock);
971 return count;
972 }
973
974 static struct sensor_device_attribute temp_input[] = {
975 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0),
976 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1),
977 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2),
978 };
979 static struct sensor_device_attribute temp_status[] = {
980 SENSOR_ATTR(temp1_status, S_IRUGO, show_temp_status, NULL, 0),
981 SENSOR_ATTR(temp2_status, S_IRUGO, show_temp_status, NULL, 1),
982 SENSOR_ATTR(temp3_status, S_IRUGO, show_temp_status, NULL, 2),
983 };
984 static struct sensor_device_attribute temp_min[] = {
985 SENSOR_ATTR(temp1_min, S_IRUGO | S_IWUSR,
986 show_temp_min, set_temp_min, 0),
987 SENSOR_ATTR(temp2_min, S_IRUGO | S_IWUSR,
988 show_temp_min, set_temp_min, 1),
989 SENSOR_ATTR(temp3_min, S_IRUGO | S_IWUSR,
990 show_temp_min, set_temp_min, 2),
991 };
992 static struct sensor_device_attribute temp_max[] = {
993 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
994 show_temp_max, set_temp_max, 0),
995 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
996 show_temp_max, set_temp_max, 1),
997 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
998 show_temp_max, set_temp_max, 2),
999 };
1000 static struct sensor_device_attribute temp_crit[] = {
1001 SENSOR_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
1002 show_temp_crit, set_temp_crit, 0),
1003 SENSOR_ATTR(temp2_crit, S_IRUGO | S_IWUSR,
1004 show_temp_crit, set_temp_crit, 1),
1005 SENSOR_ATTR(temp3_crit, S_IRUGO | S_IWUSR,
1006 show_temp_crit, set_temp_crit, 2),
1007 };
1008
alarms_temp_show(struct device * dev,struct device_attribute * attr,char * buf)1009 static ssize_t alarms_temp_show(struct device *dev,
1010 struct device_attribute *attr, char *buf)
1011 {
1012 struct pc87360_data *data = pc87360_update_device(dev);
1013 return sprintf(buf, "%u\n", data->temp_alarms);
1014 }
1015
1016 static DEVICE_ATTR_RO(alarms_temp);
1017
1018 /*
1019 * show_temp_min/max_alarm() reads data from the per-channel status
1020 * register (sec 12.3.7), not the temp event status registers (sec
1021 * 12.3.2) that show_temp_alarm() reads (via data->temp_alarms)
1022 */
1023
show_temp_min_alarm(struct device * dev,struct device_attribute * devattr,char * buf)1024 static ssize_t show_temp_min_alarm(struct device *dev,
1025 struct device_attribute *devattr, char *buf)
1026 {
1027 struct pc87360_data *data = pc87360_update_device(dev);
1028 unsigned nr = to_sensor_dev_attr(devattr)->index;
1029
1030 return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MIN));
1031 }
1032
show_temp_max_alarm(struct device * dev,struct device_attribute * devattr,char * buf)1033 static ssize_t show_temp_max_alarm(struct device *dev,
1034 struct device_attribute *devattr, char *buf)
1035 {
1036 struct pc87360_data *data = pc87360_update_device(dev);
1037 unsigned nr = to_sensor_dev_attr(devattr)->index;
1038
1039 return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MAX));
1040 }
1041
show_temp_crit_alarm(struct device * dev,struct device_attribute * devattr,char * buf)1042 static ssize_t show_temp_crit_alarm(struct device *dev,
1043 struct device_attribute *devattr, char *buf)
1044 {
1045 struct pc87360_data *data = pc87360_update_device(dev);
1046 unsigned nr = to_sensor_dev_attr(devattr)->index;
1047
1048 return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_ALM_CRIT));
1049 }
1050
1051 static struct sensor_device_attribute temp_min_alarm[] = {
1052 SENSOR_ATTR(temp1_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 0),
1053 SENSOR_ATTR(temp2_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 1),
1054 SENSOR_ATTR(temp3_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 2),
1055 };
1056
1057 static struct sensor_device_attribute temp_max_alarm[] = {
1058 SENSOR_ATTR(temp1_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 0),
1059 SENSOR_ATTR(temp2_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 1),
1060 SENSOR_ATTR(temp3_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 2),
1061 };
1062
1063 static struct sensor_device_attribute temp_crit_alarm[] = {
1064 SENSOR_ATTR(temp1_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 0),
1065 SENSOR_ATTR(temp2_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 1),
1066 SENSOR_ATTR(temp3_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 2),
1067 };
1068
1069 #define TEMP_FAULT 0x40 /* open diode */
show_temp_fault(struct device * dev,struct device_attribute * devattr,char * buf)1070 static ssize_t show_temp_fault(struct device *dev,
1071 struct device_attribute *devattr, char *buf)
1072 {
1073 struct pc87360_data *data = pc87360_update_device(dev);
1074 unsigned nr = to_sensor_dev_attr(devattr)->index;
1075
1076 return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_FAULT));
1077 }
1078 static struct sensor_device_attribute temp_fault[] = {
1079 SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
1080 SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
1081 SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2),
1082 };
1083
1084 #define TEMP_UNIT_ATTRS(X) \
1085 { &temp_input[X].dev_attr.attr, \
1086 &temp_status[X].dev_attr.attr, \
1087 &temp_min[X].dev_attr.attr, \
1088 &temp_max[X].dev_attr.attr, \
1089 &temp_crit[X].dev_attr.attr, \
1090 &temp_min_alarm[X].dev_attr.attr, \
1091 &temp_max_alarm[X].dev_attr.attr, \
1092 &temp_crit_alarm[X].dev_attr.attr, \
1093 &temp_fault[X].dev_attr.attr, \
1094 NULL \
1095 }
1096
1097 static struct attribute *pc8736x_temp_attr[][10] = {
1098 TEMP_UNIT_ATTRS(0),
1099 TEMP_UNIT_ATTRS(1),
1100 TEMP_UNIT_ATTRS(2)
1101 };
1102
1103 static const struct attribute_group pc8736x_temp_attr_group[] = {
1104 { .attrs = pc8736x_temp_attr[0] },
1105 { .attrs = pc8736x_temp_attr[1] },
1106 { .attrs = pc8736x_temp_attr[2] }
1107 };
1108
name_show(struct device * dev,struct device_attribute * devattr,char * buf)1109 static ssize_t name_show(struct device *dev,
1110 struct device_attribute *devattr, char *buf)
1111 {
1112 struct pc87360_data *data = dev_get_drvdata(dev);
1113 return sprintf(buf, "%s\n", data->name);
1114 }
1115
1116 static DEVICE_ATTR_RO(name);
1117
1118 /*
1119 * Device detection, registration and update
1120 */
1121
pc87360_find(int sioaddr,u8 * devid,unsigned short * addresses)1122 static int __init pc87360_find(int sioaddr, u8 *devid,
1123 unsigned short *addresses)
1124 {
1125 u16 val;
1126 int i;
1127 int nrdev; /* logical device count */
1128
1129 /* No superio_enter */
1130
1131 /* Identify device */
1132 val = force_id ? force_id : superio_inb(sioaddr, DEVID);
1133 switch (val) {
1134 case 0xE1: /* PC87360 */
1135 case 0xE8: /* PC87363 */
1136 case 0xE4: /* PC87364 */
1137 nrdev = 1;
1138 break;
1139 case 0xE5: /* PC87365 */
1140 case 0xE9: /* PC87366 */
1141 nrdev = 3;
1142 break;
1143 default:
1144 superio_exit(sioaddr);
1145 return -ENODEV;
1146 }
1147 /* Remember the device id */
1148 *devid = val;
1149
1150 for (i = 0; i < nrdev; i++) {
1151 /* select logical device */
1152 superio_outb(sioaddr, DEV, logdev[i]);
1153
1154 val = superio_inb(sioaddr, ACT);
1155 if (!(val & 0x01)) {
1156 pr_info("Device 0x%02x not activated\n", logdev[i]);
1157 continue;
1158 }
1159
1160 val = (superio_inb(sioaddr, BASE) << 8)
1161 | superio_inb(sioaddr, BASE + 1);
1162 if (!val) {
1163 pr_info("Base address not set for device 0x%02x\n",
1164 logdev[i]);
1165 continue;
1166 }
1167
1168 addresses[i] = val;
1169
1170 if (i == 0) { /* Fans */
1171 confreg[0] = superio_inb(sioaddr, 0xF0);
1172 confreg[1] = superio_inb(sioaddr, 0xF1);
1173
1174 pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 1,
1175 (confreg[0] >> 2) & 1, (confreg[0] >> 3) & 1,
1176 (confreg[0] >> 4) & 1);
1177 pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 2,
1178 (confreg[0] >> 5) & 1, (confreg[0] >> 6) & 1,
1179 (confreg[0] >> 7) & 1);
1180 pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 3,
1181 confreg[1] & 1, (confreg[1] >> 1) & 1,
1182 (confreg[1] >> 2) & 1);
1183 } else if (i == 1) { /* Voltages */
1184 /* Are we using thermistors? */
1185 if (*devid == 0xE9) { /* PC87366 */
1186 /*
1187 * These registers are not logical-device
1188 * specific, just that we won't need them if
1189 * we don't use the VLM device
1190 */
1191 confreg[2] = superio_inb(sioaddr, 0x2B);
1192 confreg[3] = superio_inb(sioaddr, 0x25);
1193
1194 if (confreg[2] & 0x40) {
1195 pr_info("Using thermistors for temperature monitoring\n");
1196 }
1197 if (confreg[3] & 0xE0) {
1198 pr_info("VID inputs routed (mode %u)\n",
1199 confreg[3] >> 5);
1200 }
1201 }
1202 }
1203 }
1204
1205 superio_exit(sioaddr);
1206 return 0;
1207 }
1208
pc87360_remove_files(struct device * dev)1209 static void pc87360_remove_files(struct device *dev)
1210 {
1211 int i;
1212
1213 device_remove_file(dev, &dev_attr_name);
1214 device_remove_file(dev, &dev_attr_alarms_temp);
1215 for (i = 0; i < ARRAY_SIZE(pc8736x_temp_attr_group); i++)
1216 sysfs_remove_group(&dev->kobj, &pc8736x_temp_attr_group[i]);
1217 for (i = 0; i < ARRAY_SIZE(pc8736x_fan_attr_group); i++) {
1218 sysfs_remove_group(&pdev->dev.kobj, &pc8736x_fan_attr_group[i]);
1219 device_remove_file(dev, &pwm[i].dev_attr);
1220 }
1221 sysfs_remove_group(&dev->kobj, &pc8736x_therm_group);
1222 sysfs_remove_group(&dev->kobj, &pc8736x_vin_group);
1223 }
1224
pc87360_probe(struct platform_device * pdev)1225 static int pc87360_probe(struct platform_device *pdev)
1226 {
1227 int i;
1228 struct pc87360_data *data;
1229 int err = 0;
1230 const char *name;
1231 int use_thermistors = 0;
1232 struct device *dev = &pdev->dev;
1233
1234 data = devm_kzalloc(dev, sizeof(struct pc87360_data), GFP_KERNEL);
1235 if (!data)
1236 return -ENOMEM;
1237
1238 switch (devid) {
1239 default:
1240 name = "pc87360";
1241 data->fannr = 2;
1242 break;
1243 case 0xe8:
1244 name = "pc87363";
1245 data->fannr = 2;
1246 break;
1247 case 0xe4:
1248 name = "pc87364";
1249 data->fannr = 3;
1250 break;
1251 case 0xe5:
1252 name = "pc87365";
1253 data->fannr = extra_isa[0] ? 3 : 0;
1254 data->innr = extra_isa[1] ? 11 : 0;
1255 data->tempnr = extra_isa[2] ? 2 : 0;
1256 break;
1257 case 0xe9:
1258 name = "pc87366";
1259 data->fannr = extra_isa[0] ? 3 : 0;
1260 data->innr = extra_isa[1] ? 14 : 0;
1261 data->tempnr = extra_isa[2] ? 3 : 0;
1262 break;
1263 }
1264
1265 data->name = name;
1266 mutex_init(&data->lock);
1267 mutex_init(&data->update_lock);
1268 platform_set_drvdata(pdev, data);
1269
1270 for (i = 0; i < LDNI_MAX; i++) {
1271 data->address[i] = extra_isa[i];
1272 if (data->address[i]
1273 && !devm_request_region(dev, extra_isa[i], PC87360_EXTENT,
1274 pc87360_driver.driver.name)) {
1275 dev_err(dev,
1276 "Region 0x%x-0x%x already in use!\n",
1277 extra_isa[i], extra_isa[i]+PC87360_EXTENT-1);
1278 return -EBUSY;
1279 }
1280 }
1281
1282 /* Retrieve the fans configuration from Super-I/O space */
1283 if (data->fannr)
1284 data->fan_conf = confreg[0] | (confreg[1] << 8);
1285
1286 /*
1287 * Use the correct reference voltage
1288 * Unless both the VLM and the TMS logical devices agree to
1289 * use an external Vref, the internal one is used.
1290 */
1291 if (data->innr) {
1292 i = pc87360_read_value(data, LD_IN, NO_BANK,
1293 PC87365_REG_IN_CONFIG);
1294 if (data->tempnr) {
1295 i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
1296 PC87365_REG_TEMP_CONFIG);
1297 }
1298 data->in_vref = (i&0x02) ? 3025 : 2966;
1299 dev_dbg(dev, "Using %s reference voltage\n",
1300 (i&0x02) ? "external" : "internal");
1301
1302 data->vid_conf = confreg[3];
1303 data->vrm = vid_which_vrm();
1304 }
1305
1306 /* Fan clock dividers may be needed before any data is read */
1307 for (i = 0; i < data->fannr; i++) {
1308 if (FAN_CONFIG_MONITOR(data->fan_conf, i))
1309 data->fan_status[i] = pc87360_read_value(data,
1310 LD_FAN, NO_BANK,
1311 PC87360_REG_FAN_STATUS(i));
1312 }
1313
1314 if (init > 0) {
1315 if (devid == 0xe9 && data->address[1]) /* PC87366 */
1316 use_thermistors = confreg[2] & 0x40;
1317
1318 pc87360_init_device(pdev, use_thermistors);
1319 }
1320
1321 /* Register all-or-nothing sysfs groups */
1322
1323 if (data->innr) {
1324 err = sysfs_create_group(&dev->kobj, &pc8736x_vin_group);
1325 if (err)
1326 goto error;
1327 }
1328
1329 if (data->innr == 14) {
1330 err = sysfs_create_group(&dev->kobj, &pc8736x_therm_group);
1331 if (err)
1332 goto error;
1333 }
1334
1335 /* create device attr-files for varying sysfs groups */
1336
1337 if (data->tempnr) {
1338 for (i = 0; i < data->tempnr; i++) {
1339 err = sysfs_create_group(&dev->kobj,
1340 &pc8736x_temp_attr_group[i]);
1341 if (err)
1342 goto error;
1343 }
1344 err = device_create_file(dev, &dev_attr_alarms_temp);
1345 if (err)
1346 goto error;
1347 }
1348
1349 for (i = 0; i < data->fannr; i++) {
1350 if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1351 err = sysfs_create_group(&dev->kobj,
1352 &pc8736x_fan_attr_group[i]);
1353 if (err)
1354 goto error;
1355 }
1356 if (FAN_CONFIG_CONTROL(data->fan_conf, i)) {
1357 err = device_create_file(dev, &pwm[i].dev_attr);
1358 if (err)
1359 goto error;
1360 }
1361 }
1362
1363 err = device_create_file(dev, &dev_attr_name);
1364 if (err)
1365 goto error;
1366
1367 data->hwmon_dev = hwmon_device_register(dev);
1368 if (IS_ERR(data->hwmon_dev)) {
1369 err = PTR_ERR(data->hwmon_dev);
1370 goto error;
1371 }
1372 return 0;
1373
1374 error:
1375 pc87360_remove_files(dev);
1376 return err;
1377 }
1378
pc87360_remove(struct platform_device * pdev)1379 static int pc87360_remove(struct platform_device *pdev)
1380 {
1381 struct pc87360_data *data = platform_get_drvdata(pdev);
1382
1383 hwmon_device_unregister(data->hwmon_dev);
1384 pc87360_remove_files(&pdev->dev);
1385
1386 return 0;
1387 }
1388
1389 /*
1390 * ldi is the logical device index
1391 * bank is for voltages and temperatures only
1392 */
pc87360_read_value(struct pc87360_data * data,u8 ldi,u8 bank,u8 reg)1393 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1394 u8 reg)
1395 {
1396 int res;
1397
1398 mutex_lock(&(data->lock));
1399 if (bank != NO_BANK)
1400 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1401 res = inb_p(data->address[ldi] + reg);
1402 mutex_unlock(&(data->lock));
1403
1404 return res;
1405 }
1406
pc87360_write_value(struct pc87360_data * data,u8 ldi,u8 bank,u8 reg,u8 value)1407 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1408 u8 reg, u8 value)
1409 {
1410 mutex_lock(&(data->lock));
1411 if (bank != NO_BANK)
1412 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1413 outb_p(value, data->address[ldi] + reg);
1414 mutex_unlock(&(data->lock));
1415 }
1416
1417 /* (temp & vin) channel conversion status register flags (pdf sec.11.5.12) */
1418 #define CHAN_CNVRTD 0x80 /* new data ready */
1419 #define CHAN_ENA 0x01 /* enabled channel (temp or vin) */
1420 #define CHAN_ALM_ENA 0x10 /* propagate to alarms-reg ?? (chk val!) */
1421 #define CHAN_READY (CHAN_ENA|CHAN_CNVRTD) /* sample ready mask */
1422
1423 #define TEMP_OTS_OE 0x20 /* OTS Output Enable */
1424 #define VIN_RW1C_MASK (CHAN_READY|CHAN_ALM_MAX|CHAN_ALM_MIN) /* 0x87 */
1425 #define TEMP_RW1C_MASK (VIN_RW1C_MASK|TEMP_ALM_CRIT|TEMP_FAULT) /* 0xCF */
1426
pc87360_init_device(struct platform_device * pdev,int use_thermistors)1427 static void pc87360_init_device(struct platform_device *pdev,
1428 int use_thermistors)
1429 {
1430 struct pc87360_data *data = platform_get_drvdata(pdev);
1431 int i, nr;
1432 const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1433 const u8 init_temp[3] = { 2, 2, 1 };
1434 u8 reg;
1435
1436 if (init >= 2 && data->innr) {
1437 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1438 PC87365_REG_IN_CONVRATE);
1439 dev_info(&pdev->dev,
1440 "VLM conversion set to 1s period, 160us delay\n");
1441 pc87360_write_value(data, LD_IN, NO_BANK,
1442 PC87365_REG_IN_CONVRATE,
1443 (reg & 0xC0) | 0x11);
1444 }
1445
1446 nr = data->innr < 11 ? data->innr : 11;
1447 for (i = 0; i < nr; i++) {
1448 reg = pc87360_read_value(data, LD_IN, i,
1449 PC87365_REG_IN_STATUS);
1450 dev_dbg(&pdev->dev, "bios in%d status:0x%02x\n", i, reg);
1451 if (init >= init_in[i]) {
1452 /* Forcibly enable voltage channel */
1453 if (!(reg & CHAN_ENA)) {
1454 dev_dbg(&pdev->dev, "Forcibly enabling in%d\n",
1455 i);
1456 pc87360_write_value(data, LD_IN, i,
1457 PC87365_REG_IN_STATUS,
1458 (reg & 0x68) | 0x87);
1459 }
1460 }
1461 }
1462
1463 /*
1464 * We can't blindly trust the Super-I/O space configuration bit,
1465 * most BIOS won't set it properly
1466 */
1467 dev_dbg(&pdev->dev, "bios thermistors:%d\n", use_thermistors);
1468 for (i = 11; i < data->innr; i++) {
1469 reg = pc87360_read_value(data, LD_IN, i,
1470 PC87365_REG_TEMP_STATUS);
1471 use_thermistors = use_thermistors || (reg & CHAN_ENA);
1472 /* thermistors are temp[4-6], measured on vin[11-14] */
1473 dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i-7, reg);
1474 }
1475 dev_dbg(&pdev->dev, "using thermistors:%d\n", use_thermistors);
1476
1477 i = use_thermistors ? 2 : 0;
1478 for (; i < data->tempnr; i++) {
1479 reg = pc87360_read_value(data, LD_TEMP, i,
1480 PC87365_REG_TEMP_STATUS);
1481 dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i + 1, reg);
1482 if (init >= init_temp[i]) {
1483 /* Forcibly enable temperature channel */
1484 if (!(reg & CHAN_ENA)) {
1485 dev_dbg(&pdev->dev,
1486 "Forcibly enabling temp%d\n", i + 1);
1487 pc87360_write_value(data, LD_TEMP, i,
1488 PC87365_REG_TEMP_STATUS,
1489 0xCF);
1490 }
1491 }
1492 }
1493
1494 if (use_thermistors) {
1495 for (i = 11; i < data->innr; i++) {
1496 if (init >= init_in[i]) {
1497 /*
1498 * The pin may already be used by thermal
1499 * diodes
1500 */
1501 reg = pc87360_read_value(data, LD_TEMP,
1502 (i - 11) / 2, PC87365_REG_TEMP_STATUS);
1503 if (reg & CHAN_ENA) {
1504 dev_dbg(&pdev->dev,
1505 "Skipping temp%d, pin already in use by temp%d\n",
1506 i - 7, (i - 11) / 2);
1507 continue;
1508 }
1509
1510 /* Forcibly enable thermistor channel */
1511 reg = pc87360_read_value(data, LD_IN, i,
1512 PC87365_REG_IN_STATUS);
1513 if (!(reg & CHAN_ENA)) {
1514 dev_dbg(&pdev->dev,
1515 "Forcibly enabling temp%d\n",
1516 i - 7);
1517 pc87360_write_value(data, LD_IN, i,
1518 PC87365_REG_TEMP_STATUS,
1519 (reg & 0x60) | 0x8F);
1520 }
1521 }
1522 }
1523 }
1524
1525 if (data->innr) {
1526 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1527 PC87365_REG_IN_CONFIG);
1528 dev_dbg(&pdev->dev, "bios vin-cfg:0x%02x\n", reg);
1529 if (reg & CHAN_ENA) {
1530 dev_dbg(&pdev->dev,
1531 "Forcibly enabling monitoring (VLM)\n");
1532 pc87360_write_value(data, LD_IN, NO_BANK,
1533 PC87365_REG_IN_CONFIG,
1534 reg & 0xFE);
1535 }
1536 }
1537
1538 if (data->tempnr) {
1539 reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1540 PC87365_REG_TEMP_CONFIG);
1541 dev_dbg(&pdev->dev, "bios temp-cfg:0x%02x\n", reg);
1542 if (reg & CHAN_ENA) {
1543 dev_dbg(&pdev->dev,
1544 "Forcibly enabling monitoring (TMS)\n");
1545 pc87360_write_value(data, LD_TEMP, NO_BANK,
1546 PC87365_REG_TEMP_CONFIG,
1547 reg & 0xFE);
1548 }
1549
1550 if (init >= 2) {
1551 /* Chip config as documented by National Semi. */
1552 pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1553 /*
1554 * We voluntarily omit the bank here, in case the
1555 * sequence itself matters. It shouldn't be a problem,
1556 * since nobody else is supposed to access the
1557 * device at that point.
1558 */
1559 pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1560 pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1561 pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1562 pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1563 }
1564 }
1565 }
1566
pc87360_autodiv(struct device * dev,int nr)1567 static void pc87360_autodiv(struct device *dev, int nr)
1568 {
1569 struct pc87360_data *data = dev_get_drvdata(dev);
1570 u8 old_min = data->fan_min[nr];
1571
1572 /* Increase clock divider if needed and possible */
1573 if ((data->fan_status[nr] & 0x04) /* overflow flag */
1574 || (data->fan[nr] >= 224)) { /* next to overflow */
1575 if ((data->fan_status[nr] & 0x60) != 0x60) {
1576 data->fan_status[nr] += 0x20;
1577 data->fan_min[nr] >>= 1;
1578 data->fan[nr] >>= 1;
1579 dev_dbg(dev,
1580 "Increasing clock divider to %d for fan %d\n",
1581 FAN_DIV_FROM_REG(data->fan_status[nr]), nr + 1);
1582 }
1583 } else {
1584 /* Decrease clock divider if possible */
1585 while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1586 && data->fan[nr] < 85 /* bad accuracy */
1587 && (data->fan_status[nr] & 0x60) != 0x00) {
1588 data->fan_status[nr] -= 0x20;
1589 data->fan_min[nr] <<= 1;
1590 data->fan[nr] <<= 1;
1591 dev_dbg(dev,
1592 "Decreasing clock divider to %d for fan %d\n",
1593 FAN_DIV_FROM_REG(data->fan_status[nr]),
1594 nr + 1);
1595 }
1596 }
1597
1598 /* Write new fan min if it changed */
1599 if (old_min != data->fan_min[nr]) {
1600 pc87360_write_value(data, LD_FAN, NO_BANK,
1601 PC87360_REG_FAN_MIN(nr),
1602 data->fan_min[nr]);
1603 }
1604 }
1605
pc87360_update_device(struct device * dev)1606 static struct pc87360_data *pc87360_update_device(struct device *dev)
1607 {
1608 struct pc87360_data *data = dev_get_drvdata(dev);
1609 u8 i;
1610
1611 mutex_lock(&data->update_lock);
1612
1613 if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1614 dev_dbg(dev, "Data update\n");
1615
1616 /* Fans */
1617 for (i = 0; i < data->fannr; i++) {
1618 if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1619 data->fan_status[i] =
1620 pc87360_read_value(data, LD_FAN,
1621 NO_BANK, PC87360_REG_FAN_STATUS(i));
1622 data->fan[i] = pc87360_read_value(data, LD_FAN,
1623 NO_BANK, PC87360_REG_FAN(i));
1624 data->fan_min[i] = pc87360_read_value(data,
1625 LD_FAN, NO_BANK,
1626 PC87360_REG_FAN_MIN(i));
1627 /* Change clock divider if needed */
1628 pc87360_autodiv(dev, i);
1629 /* Clear bits and write new divider */
1630 pc87360_write_value(data, LD_FAN, NO_BANK,
1631 PC87360_REG_FAN_STATUS(i),
1632 data->fan_status[i]);
1633 }
1634 if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1635 data->pwm[i] = pc87360_read_value(data, LD_FAN,
1636 NO_BANK, PC87360_REG_PWM(i));
1637 }
1638
1639 /* Voltages */
1640 for (i = 0; i < data->innr; i++) {
1641 data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1642 PC87365_REG_IN_STATUS);
1643 /* Clear bits */
1644 pc87360_write_value(data, LD_IN, i,
1645 PC87365_REG_IN_STATUS,
1646 data->in_status[i]);
1647 if ((data->in_status[i] & CHAN_READY) == CHAN_READY) {
1648 data->in[i] = pc87360_read_value(data, LD_IN,
1649 i, PC87365_REG_IN);
1650 }
1651 if (data->in_status[i] & CHAN_ENA) {
1652 data->in_min[i] = pc87360_read_value(data,
1653 LD_IN, i,
1654 PC87365_REG_IN_MIN);
1655 data->in_max[i] = pc87360_read_value(data,
1656 LD_IN, i,
1657 PC87365_REG_IN_MAX);
1658 if (i >= 11)
1659 data->in_crit[i-11] =
1660 pc87360_read_value(data, LD_IN,
1661 i, PC87365_REG_TEMP_CRIT);
1662 }
1663 }
1664 if (data->innr) {
1665 data->in_alarms = pc87360_read_value(data, LD_IN,
1666 NO_BANK, PC87365_REG_IN_ALARMS1)
1667 | ((pc87360_read_value(data, LD_IN,
1668 NO_BANK, PC87365_REG_IN_ALARMS2)
1669 & 0x07) << 8);
1670 data->vid = (data->vid_conf & 0xE0) ?
1671 pc87360_read_value(data, LD_IN,
1672 NO_BANK, PC87365_REG_VID) : 0x1F;
1673 }
1674
1675 /* Temperatures */
1676 for (i = 0; i < data->tempnr; i++) {
1677 data->temp_status[i] = pc87360_read_value(data,
1678 LD_TEMP, i,
1679 PC87365_REG_TEMP_STATUS);
1680 /* Clear bits */
1681 pc87360_write_value(data, LD_TEMP, i,
1682 PC87365_REG_TEMP_STATUS,
1683 data->temp_status[i]);
1684 if ((data->temp_status[i] & CHAN_READY) == CHAN_READY) {
1685 data->temp[i] = pc87360_read_value(data,
1686 LD_TEMP, i,
1687 PC87365_REG_TEMP);
1688 }
1689 if (data->temp_status[i] & CHAN_ENA) {
1690 data->temp_min[i] = pc87360_read_value(data,
1691 LD_TEMP, i,
1692 PC87365_REG_TEMP_MIN);
1693 data->temp_max[i] = pc87360_read_value(data,
1694 LD_TEMP, i,
1695 PC87365_REG_TEMP_MAX);
1696 data->temp_crit[i] = pc87360_read_value(data,
1697 LD_TEMP, i,
1698 PC87365_REG_TEMP_CRIT);
1699 }
1700 }
1701 if (data->tempnr) {
1702 data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1703 NO_BANK, PC87365_REG_TEMP_ALARMS)
1704 & 0x3F;
1705 }
1706
1707 data->last_updated = jiffies;
1708 data->valid = 1;
1709 }
1710
1711 mutex_unlock(&data->update_lock);
1712
1713 return data;
1714 }
1715
pc87360_device_add(unsigned short address)1716 static int __init pc87360_device_add(unsigned short address)
1717 {
1718 struct resource res[3];
1719 int err, i, res_count;
1720
1721 pdev = platform_device_alloc("pc87360", address);
1722 if (!pdev) {
1723 err = -ENOMEM;
1724 pr_err("Device allocation failed\n");
1725 goto exit;
1726 }
1727
1728 memset(res, 0, 3 * sizeof(struct resource));
1729 res_count = 0;
1730 for (i = 0; i < 3; i++) {
1731 if (!extra_isa[i])
1732 continue;
1733 res[res_count].start = extra_isa[i];
1734 res[res_count].end = extra_isa[i] + PC87360_EXTENT - 1;
1735 res[res_count].name = "pc87360",
1736 res[res_count].flags = IORESOURCE_IO,
1737
1738 err = acpi_check_resource_conflict(&res[res_count]);
1739 if (err)
1740 goto exit_device_put;
1741
1742 res_count++;
1743 }
1744
1745 err = platform_device_add_resources(pdev, res, res_count);
1746 if (err) {
1747 pr_err("Device resources addition failed (%d)\n", err);
1748 goto exit_device_put;
1749 }
1750
1751 err = platform_device_add(pdev);
1752 if (err) {
1753 pr_err("Device addition failed (%d)\n", err);
1754 goto exit_device_put;
1755 }
1756
1757 return 0;
1758
1759 exit_device_put:
1760 platform_device_put(pdev);
1761 exit:
1762 return err;
1763 }
1764
pc87360_init(void)1765 static int __init pc87360_init(void)
1766 {
1767 int err, i;
1768 unsigned short address = 0;
1769
1770 if (pc87360_find(0x2e, &devid, extra_isa)
1771 && pc87360_find(0x4e, &devid, extra_isa)) {
1772 pr_warn("PC8736x not detected, module not inserted\n");
1773 return -ENODEV;
1774 }
1775
1776 /* Arbitrarily pick one of the addresses */
1777 for (i = 0; i < 3; i++) {
1778 if (extra_isa[i] != 0x0000) {
1779 address = extra_isa[i];
1780 break;
1781 }
1782 }
1783
1784 if (address == 0x0000) {
1785 pr_warn("No active logical device, module not inserted\n");
1786 return -ENODEV;
1787 }
1788
1789 err = platform_driver_register(&pc87360_driver);
1790 if (err)
1791 goto exit;
1792
1793 /* Sets global pdev as a side effect */
1794 err = pc87360_device_add(address);
1795 if (err)
1796 goto exit_driver;
1797
1798 return 0;
1799
1800 exit_driver:
1801 platform_driver_unregister(&pc87360_driver);
1802 exit:
1803 return err;
1804 }
1805
pc87360_exit(void)1806 static void __exit pc87360_exit(void)
1807 {
1808 platform_device_unregister(pdev);
1809 platform_driver_unregister(&pc87360_driver);
1810 }
1811
1812
1813 MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
1814 MODULE_DESCRIPTION("PC8736x hardware monitor");
1815 MODULE_LICENSE("GPL");
1816
1817 module_init(pc87360_init);
1818 module_exit(pc87360_exit);
1819
