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revert-mm-fix-blkdev-size-calculation-in-generic_write_checks
[linux-2.6/linux-trees-mm.git] / drivers / hwmon / pc87360.c
blob9de14ae0a7e9d0829a25261ed0e41a4c1cbe551f
1 /*
2 * pc87360.c - Part of lm_sensors, Linux kernel modules
3 * for hardware monitoring
4 * Copyright (C) 2004, 2007 Jean Delvare <khali@linux-fr.org>
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 #include <linux/module.h>
37 #include <linux/init.h>
38 #include <linux/slab.h>
39 #include <linux/jiffies.h>
40 #include <linux/platform_device.h>
41 #include <linux/hwmon.h>
42 #include <linux/hwmon-sysfs.h>
43 #include <linux/hwmon-vid.h>
44 #include <linux/err.h>
45 #include <linux/mutex.h>
46 #include <linux/acpi.h>
47 #include <asm/io.h>
48
49 static u8 devid;
50 static struct platform_device *pdev;
51 static unsigned short extra_isa[3];
52 static u8 confreg[4];
53
54 static int init = 1;
55 module_param(init, int, 0);
56 MODULE_PARM_DESC(init,
57 "Chip initialization level:\n"
58 " 0: None\n"
59 "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
60 " 2: Forcibly enable all voltage and temperature channels, except in9\n"
61 " 3: Forcibly enable all voltage and temperature channels, including in9");
62
63 /*
64 * Super-I/O registers and operations
65 */
66
67 #define DEV 0x07 /* Register: Logical device select */
68 #define DEVID 0x20 /* Register: Device ID */
69 #define ACT 0x30 /* Register: Device activation */
70 #define BASE 0x60 /* Register: Base address */
71
72 #define FSCM 0x09 /* Logical device: fans */
73 #define VLM 0x0d /* Logical device: voltages */
74 #define TMS 0x0e /* Logical device: temperatures */
75 static const u8 logdev[3] = { FSCM, VLM, TMS };
76
77 #define LD_FAN 0
78 #define LD_IN 1
79 #define LD_TEMP 2
80
81 static inline void superio_outb(int sioaddr, int reg, int val)
82 {
83 outb(reg, sioaddr);
84 outb(val, sioaddr+1);
85 }
86
87 static inline int superio_inb(int sioaddr, int reg)
88 {
89 outb(reg, sioaddr);
90 return inb(sioaddr+1);
91 }
92
93 static inline void superio_exit(int sioaddr)
94 {
95 outb(0x02, sioaddr);
96 outb(0x02, sioaddr+1);
97 }
98
99 /*
100 * Logical devices
101 */
102
103 #define PC87360_EXTENT 0x10
104 #define PC87365_REG_BANK 0x09
105 #define NO_BANK 0xff
106
107 /*
108 * Fan registers and conversions
109 */
110
111 /* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
112 #define PC87360_REG_PRESCALE(nr) (0x00 + 2 * (nr))
113 #define PC87360_REG_PWM(nr) (0x01 + 2 * (nr))
114 #define PC87360_REG_FAN_MIN(nr) (0x06 + 3 * (nr))
115 #define PC87360_REG_FAN(nr) (0x07 + 3 * (nr))
116 #define PC87360_REG_FAN_STATUS(nr) (0x08 + 3 * (nr))
117
118 #define FAN_FROM_REG(val,div) ((val) == 0 ? 0: \
119 480000 / ((val)*(div)))
120 #define FAN_TO_REG(val,div) ((val) <= 100 ? 0 : \
121 480000 / ((val)*(div)))
122 #define FAN_DIV_FROM_REG(val) (1 << ((val >> 5) & 0x03))
123 #define FAN_STATUS_FROM_REG(val) ((val) & 0x07)
124
125 #define FAN_CONFIG_MONITOR(val,nr) (((val) >> (2 + nr * 3)) & 1)
126 #define FAN_CONFIG_CONTROL(val,nr) (((val) >> (3 + nr * 3)) & 1)
127 #define FAN_CONFIG_INVERT(val,nr) (((val) >> (4 + nr * 3)) & 1)
128
129 #define PWM_FROM_REG(val,inv) ((inv) ? 255 - (val) : (val))
130 static inline u8 PWM_TO_REG(int val, int inv)
131 {
132 if (inv)
133 val = 255 - val;
134 if (val < 0)
135 return 0;
136 if (val > 255)
137 return 255;
138 return val;
139 }
140
141 /*
142 * Voltage registers and conversions
143 */
144
145 #define PC87365_REG_IN_CONVRATE 0x07
146 #define PC87365_REG_IN_CONFIG 0x08
147 #define PC87365_REG_IN 0x0B
148 #define PC87365_REG_IN_MIN 0x0D
149 #define PC87365_REG_IN_MAX 0x0C
150 #define PC87365_REG_IN_STATUS 0x0A
151 #define PC87365_REG_IN_ALARMS1 0x00
152 #define PC87365_REG_IN_ALARMS2 0x01
153 #define PC87365_REG_VID 0x06
154
155 #define IN_FROM_REG(val,ref) (((val) * (ref) + 128) / 256)
156 #define IN_TO_REG(val,ref) ((val) < 0 ? 0 : \
157 (val)*256 >= (ref)*255 ? 255: \
158 ((val) * 256 + (ref)/2) / (ref))
159
160 /*
161 * Temperature registers and conversions
162 */
163
164 #define PC87365_REG_TEMP_CONFIG 0x08
165 #define PC87365_REG_TEMP 0x0B
166 #define PC87365_REG_TEMP_MIN 0x0D
167 #define PC87365_REG_TEMP_MAX 0x0C
168 #define PC87365_REG_TEMP_CRIT 0x0E
169 #define PC87365_REG_TEMP_STATUS 0x0A
170 #define PC87365_REG_TEMP_ALARMS 0x00
171
172 #define TEMP_FROM_REG(val) ((val) * 1000)
173 #define TEMP_TO_REG(val) ((val) < -55000 ? -55 : \
174 (val) > 127000 ? 127 : \
175 (val) < 0 ? ((val) - 500) / 1000 : \
176 ((val) + 500) / 1000)
177
178 /*
179 * Device data
180 */
181
182 struct pc87360_data {
183 const char *name;
184 struct device *hwmon_dev;
185 struct mutex lock;
186 struct mutex update_lock;
187 char valid; /* !=0 if following fields are valid */
188 unsigned long last_updated; /* In jiffies */
189
190 int address[3];
191
192 u8 fannr, innr, tempnr;
193
194 u8 fan[3]; /* Register value */
195 u8 fan_min[3]; /* Register value */
196 u8 fan_status[3]; /* Register value */
197 u8 pwm[3]; /* Register value */
198 u16 fan_conf; /* Configuration register values, combined */
199
200 u16 in_vref; /* 1 mV/bit */
201 u8 in[14]; /* Register value */
202 u8 in_min[14]; /* Register value */
203 u8 in_max[14]; /* Register value */
204 u8 in_crit[3]; /* Register value */
205 u8 in_status[14]; /* Register value */
206 u16 in_alarms; /* Register values, combined, masked */
207 u8 vid_conf; /* Configuration register value */
208 u8 vrm;
209 u8 vid; /* Register value */
210
211 s8 temp[3]; /* Register value */
212 s8 temp_min[3]; /* Register value */
213 s8 temp_max[3]; /* Register value */
214 s8 temp_crit[3]; /* Register value */
215 u8 temp_status[3]; /* Register value */
216 u8 temp_alarms; /* Register value, masked */
217 };
218
219 /*
220 * Functions declaration
221 */
222
223 static int pc87360_probe(struct platform_device *pdev);
224 static int __devexit pc87360_remove(struct platform_device *pdev);
225
226 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
227 u8 reg);
228 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
229 u8 reg, u8 value);
230 static void pc87360_init_device(struct platform_device *pdev,
231 int use_thermistors);
232 static struct pc87360_data *pc87360_update_device(struct device *dev);
233
234 /*
235 * Driver data
236 */
237
238 static struct platform_driver pc87360_driver = {
239 .driver = {
240 .owner = THIS_MODULE,
241 .name = "pc87360",
242 },
243 .probe = pc87360_probe,
244 .remove = __devexit_p(pc87360_remove),
245 };
246
247 /*
248 * Sysfs stuff
249 */
250
251 static ssize_t show_fan_input(struct device *dev, struct device_attribute *devattr, char *buf)
252 {
253 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
254 struct pc87360_data *data = pc87360_update_device(dev);
255 return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[attr->index],
256 FAN_DIV_FROM_REG(data->fan_status[attr->index])));
257 }
258 static ssize_t show_fan_min(struct device *dev, 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_min[attr->index],
263 FAN_DIV_FROM_REG(data->fan_status[attr->index])));
264 }
265 static ssize_t show_fan_div(struct device *dev, struct device_attribute *devattr, char *buf)
266 {
267 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
268 struct pc87360_data *data = pc87360_update_device(dev);
269 return sprintf(buf, "%u\n",
270 FAN_DIV_FROM_REG(data->fan_status[attr->index]));
271 }
272 static ssize_t show_fan_status(struct device *dev, struct device_attribute *devattr, char *buf)
273 {
274 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
275 struct pc87360_data *data = pc87360_update_device(dev);
276 return sprintf(buf, "%u\n",
277 FAN_STATUS_FROM_REG(data->fan_status[attr->index]));
278 }
279 static ssize_t set_fan_min(struct device *dev, struct device_attribute *devattr, const char *buf,
280 size_t count)
281 {
282 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
283 struct pc87360_data *data = dev_get_drvdata(dev);
284 long fan_min = simple_strtol(buf, NULL, 10);
285
286 mutex_lock(&data->update_lock);
287 fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[attr->index]));
288
289 /* If it wouldn't fit, change clock divisor */
290 while (fan_min > 255
291 && (data->fan_status[attr->index] & 0x60) != 0x60) {
292 fan_min >>= 1;
293 data->fan[attr->index] >>= 1;
294 data->fan_status[attr->index] += 0x20;
295 }
296 data->fan_min[attr->index] = fan_min > 255 ? 255 : fan_min;
297 pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(attr->index),
298 data->fan_min[attr->index]);
299
300 /* Write new divider, preserve alarm bits */
301 pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(attr->index),
302 data->fan_status[attr->index] & 0xF9);
303 mutex_unlock(&data->update_lock);
304
305 return count;
306 }
307
308 static struct sensor_device_attribute fan_input[] = {
309 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0),
310 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1),
311 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2),
312 };
313 static struct sensor_device_attribute fan_status[] = {
314 SENSOR_ATTR(fan1_status, S_IRUGO, show_fan_status, NULL, 0),
315 SENSOR_ATTR(fan2_status, S_IRUGO, show_fan_status, NULL, 1),
316 SENSOR_ATTR(fan3_status, S_IRUGO, show_fan_status, NULL, 2),
317 };
318 static struct sensor_device_attribute fan_div[] = {
319 SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
320 SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
321 SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
322 };
323 static struct sensor_device_attribute fan_min[] = {
324 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 0),
325 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 1),
326 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 2),
327 };
328
329 #define FAN_UNIT_ATTRS(X) \
330 &fan_input[X].dev_attr.attr, \
331 &fan_status[X].dev_attr.attr, \
332 &fan_div[X].dev_attr.attr, \
333 &fan_min[X].dev_attr.attr
334
335 static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr, char *buf)
336 {
337 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
338 struct pc87360_data *data = pc87360_update_device(dev);
339 return sprintf(buf, "%u\n",
340 PWM_FROM_REG(data->pwm[attr->index],
341 FAN_CONFIG_INVERT(data->fan_conf,
342 attr->index)));
343 }
344 static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr, const char *buf,
345 size_t count)
346 {
347 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
348 struct pc87360_data *data = dev_get_drvdata(dev);
349 long val = simple_strtol(buf, NULL, 10);
350
351 mutex_lock(&data->update_lock);
352 data->pwm[attr->index] = PWM_TO_REG(val,
353 FAN_CONFIG_INVERT(data->fan_conf, attr->index));
354 pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(attr->index),
355 data->pwm[attr->index]);
356 mutex_unlock(&data->update_lock);
357 return count;
358 }
359
360 static struct sensor_device_attribute pwm[] = {
361 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0),
362 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1),
363 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2),
364 };
365
366 static struct attribute * pc8736x_fan_attr_array[] = {
367 FAN_UNIT_ATTRS(0),
368 FAN_UNIT_ATTRS(1),
369 FAN_UNIT_ATTRS(2),
370 &pwm[0].dev_attr.attr,
371 &pwm[1].dev_attr.attr,
372 &pwm[2].dev_attr.attr,
373 NULL
374 };
375 static const struct attribute_group pc8736x_fan_group = {
376 .attrs = pc8736x_fan_attr_array,
377 };
378
379 static ssize_t show_in_input(struct device *dev, struct device_attribute *devattr, char *buf)
380 {
381 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
382 struct pc87360_data *data = pc87360_update_device(dev);
383 return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
384 data->in_vref));
385 }
386 static ssize_t show_in_min(struct device *dev, struct device_attribute *devattr, char *buf)
387 {
388 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
389 struct pc87360_data *data = pc87360_update_device(dev);
390 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
391 data->in_vref));
392 }
393 static ssize_t show_in_max(struct device *dev, struct device_attribute *devattr, char *buf)
394 {
395 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
396 struct pc87360_data *data = pc87360_update_device(dev);
397 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
398 data->in_vref));
399 }
400 static ssize_t show_in_status(struct device *dev, struct device_attribute *devattr, char *buf)
401 {
402 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
403 struct pc87360_data *data = pc87360_update_device(dev);
404 return sprintf(buf, "%u\n", data->in_status[attr->index]);
405 }
406 static ssize_t set_in_min(struct device *dev, struct device_attribute *devattr, const char *buf,
407 size_t count)
408 {
409 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
410 struct pc87360_data *data = dev_get_drvdata(dev);
411 long val = simple_strtol(buf, NULL, 10);
412
413 mutex_lock(&data->update_lock);
414 data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
415 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MIN,
416 data->in_min[attr->index]);
417 mutex_unlock(&data->update_lock);
418 return count;
419 }
420 static ssize_t set_in_max(struct device *dev, struct device_attribute *devattr, const char *buf,
421 size_t count)
422 {
423 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
424 struct pc87360_data *data = dev_get_drvdata(dev);
425 long val = simple_strtol(buf, NULL, 10);
426
427 mutex_lock(&data->update_lock);
428 data->in_max[attr->index] = IN_TO_REG(val,
429 data->in_vref);
430 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MAX,
431 data->in_max[attr->index]);
432 mutex_unlock(&data->update_lock);
433 return count;
434 }
435
436 static struct sensor_device_attribute in_input[] = {
437 SENSOR_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0),
438 SENSOR_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1),
439 SENSOR_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2),
440 SENSOR_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3),
441 SENSOR_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4),
442 SENSOR_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5),
443 SENSOR_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6),
444 SENSOR_ATTR(in7_input, S_IRUGO, show_in_input, NULL, 7),
445 SENSOR_ATTR(in8_input, S_IRUGO, show_in_input, NULL, 8),
446 SENSOR_ATTR(in9_input, S_IRUGO, show_in_input, NULL, 9),
447 SENSOR_ATTR(in10_input, S_IRUGO, show_in_input, NULL, 10),
448 };
449 static struct sensor_device_attribute in_status[] = {
450 SENSOR_ATTR(in0_status, S_IRUGO, show_in_status, NULL, 0),
451 SENSOR_ATTR(in1_status, S_IRUGO, show_in_status, NULL, 1),
452 SENSOR_ATTR(in2_status, S_IRUGO, show_in_status, NULL, 2),
453 SENSOR_ATTR(in3_status, S_IRUGO, show_in_status, NULL, 3),
454 SENSOR_ATTR(in4_status, S_IRUGO, show_in_status, NULL, 4),
455 SENSOR_ATTR(in5_status, S_IRUGO, show_in_status, NULL, 5),
456 SENSOR_ATTR(in6_status, S_IRUGO, show_in_status, NULL, 6),
457 SENSOR_ATTR(in7_status, S_IRUGO, show_in_status, NULL, 7),
458 SENSOR_ATTR(in8_status, S_IRUGO, show_in_status, NULL, 8),
459 SENSOR_ATTR(in9_status, S_IRUGO, show_in_status, NULL, 9),
460 SENSOR_ATTR(in10_status, S_IRUGO, show_in_status, NULL, 10),
461 };
462 static struct sensor_device_attribute in_min[] = {
463 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 0),
464 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 1),
465 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 2),
466 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 3),
467 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 4),
468 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 5),
469 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 6),
470 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 7),
471 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 8),
472 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 9),
473 SENSOR_ATTR(in10_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 10),
474 };
475 static struct sensor_device_attribute in_max[] = {
476 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 0),
477 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 1),
478 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 2),
479 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 3),
480 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 4),
481 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 5),
482 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 6),
483 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 7),
484 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 8),
485 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 9),
486 SENSOR_ATTR(in10_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 10),
487 };
488
489 #define VIN_UNIT_ATTRS(X) \
490 &in_input[X].dev_attr.attr, \
491 &in_status[X].dev_attr.attr, \
492 &in_min[X].dev_attr.attr, \
493 &in_max[X].dev_attr.attr
494
495 static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
496 {
497 struct pc87360_data *data = pc87360_update_device(dev);
498 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
499 }
500 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
501
502 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
503 {
504 struct pc87360_data *data = dev_get_drvdata(dev);
505 return sprintf(buf, "%u\n", data->vrm);
506 }
507 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
508 {
509 struct pc87360_data *data = dev_get_drvdata(dev);
510 data->vrm = simple_strtoul(buf, NULL, 10);
511 return count;
512 }
513 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
514
515 static ssize_t show_in_alarms(struct device *dev, struct device_attribute *attr, char *buf)
516 {
517 struct pc87360_data *data = pc87360_update_device(dev);
518 return sprintf(buf, "%u\n", data->in_alarms);
519 }
520 static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
521
522 static struct attribute *pc8736x_vin_attr_array[] = {
523 VIN_UNIT_ATTRS(0),
524 VIN_UNIT_ATTRS(1),
525 VIN_UNIT_ATTRS(2),
526 VIN_UNIT_ATTRS(3),
527 VIN_UNIT_ATTRS(4),
528 VIN_UNIT_ATTRS(5),
529 VIN_UNIT_ATTRS(6),
530 VIN_UNIT_ATTRS(7),
531 VIN_UNIT_ATTRS(8),
532 VIN_UNIT_ATTRS(9),
533 VIN_UNIT_ATTRS(10),
534 &dev_attr_cpu0_vid.attr,
535 &dev_attr_vrm.attr,
536 &dev_attr_alarms_in.attr,
537 NULL
538 };
539 static const struct attribute_group pc8736x_vin_group = {
540 .attrs = pc8736x_vin_attr_array,
541 };
542
543 static ssize_t show_therm_input(struct device *dev, struct device_attribute *devattr, char *buf)
544 {
545 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
546 struct pc87360_data *data = pc87360_update_device(dev);
547 return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
548 data->in_vref));
549 }
550 static ssize_t show_therm_min(struct device *dev, struct device_attribute *devattr, char *buf)
551 {
552 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
553 struct pc87360_data *data = pc87360_update_device(dev);
554 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
555 data->in_vref));
556 }
557 static ssize_t show_therm_max(struct device *dev, struct device_attribute *devattr, char *buf)
558 {
559 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
560 struct pc87360_data *data = pc87360_update_device(dev);
561 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
562 data->in_vref));
563 }
564 static ssize_t show_therm_crit(struct device *dev, struct device_attribute *devattr, char *buf)
565 {
566 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
567 struct pc87360_data *data = pc87360_update_device(dev);
568 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[attr->index-11],
569 data->in_vref));
570 }
571 static ssize_t show_therm_status(struct device *dev, struct device_attribute *devattr, char *buf)
572 {
573 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
574 struct pc87360_data *data = pc87360_update_device(dev);
575 return sprintf(buf, "%u\n", data->in_status[attr->index]);
576 }
577 static ssize_t set_therm_min(struct device *dev, struct device_attribute *devattr, const char *buf,
578 size_t count)
579 {
580 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
581 struct pc87360_data *data = dev_get_drvdata(dev);
582 long val = simple_strtol(buf, NULL, 10);
583
584 mutex_lock(&data->update_lock);
585 data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
586 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MIN,
587 data->in_min[attr->index]);
588 mutex_unlock(&data->update_lock);
589 return count;
590 }
591 static ssize_t set_therm_max(struct device *dev, struct device_attribute *devattr, const char *buf,
592 size_t count)
593 {
594 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
595 struct pc87360_data *data = dev_get_drvdata(dev);
596 long val = simple_strtol(buf, NULL, 10);
597
598 mutex_lock(&data->update_lock);
599 data->in_max[attr->index] = IN_TO_REG(val, data->in_vref);
600 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MAX,
601 data->in_max[attr->index]);
602 mutex_unlock(&data->update_lock);
603 return count;
604 }
605 static ssize_t set_therm_crit(struct device *dev, struct device_attribute *devattr, const char *buf,
606 size_t count)
607 {
608 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
609 struct pc87360_data *data = dev_get_drvdata(dev);
610 long val = simple_strtol(buf, NULL, 10);
611
612 mutex_lock(&data->update_lock);
613 data->in_crit[attr->index-11] = IN_TO_REG(val, data->in_vref);
614 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_CRIT,
615 data->in_crit[attr->index-11]);
616 mutex_unlock(&data->update_lock);
617 return count;
618 }
619
620 /* the +11 term below reflects the fact that VLM units 11,12,13 are
621 used in the chip to measure voltage across the thermistors
622 */
623 static struct sensor_device_attribute therm_input[] = {
624 SENSOR_ATTR(temp4_input, S_IRUGO, show_therm_input, NULL, 0+11),
625 SENSOR_ATTR(temp5_input, S_IRUGO, show_therm_input, NULL, 1+11),
626 SENSOR_ATTR(temp6_input, S_IRUGO, show_therm_input, NULL, 2+11),
627 };
628 static struct sensor_device_attribute therm_status[] = {
629 SENSOR_ATTR(temp4_status, S_IRUGO, show_therm_status, NULL, 0+11),
630 SENSOR_ATTR(temp5_status, S_IRUGO, show_therm_status, NULL, 1+11),
631 SENSOR_ATTR(temp6_status, S_IRUGO, show_therm_status, NULL, 2+11),
632 };
633 static struct sensor_device_attribute therm_min[] = {
634 SENSOR_ATTR(temp4_min, S_IRUGO | S_IWUSR,
635 show_therm_min, set_therm_min, 0+11),
636 SENSOR_ATTR(temp5_min, S_IRUGO | S_IWUSR,
637 show_therm_min, set_therm_min, 1+11),
638 SENSOR_ATTR(temp6_min, S_IRUGO | S_IWUSR,
639 show_therm_min, set_therm_min, 2+11),
640 };
641 static struct sensor_device_attribute therm_max[] = {
642 SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR,
643 show_therm_max, set_therm_max, 0+11),
644 SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR,
645 show_therm_max, set_therm_max, 1+11),
646 SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR,
647 show_therm_max, set_therm_max, 2+11),
648 };
649 static struct sensor_device_attribute therm_crit[] = {
650 SENSOR_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
651 show_therm_crit, set_therm_crit, 0+11),
652 SENSOR_ATTR(temp5_crit, S_IRUGO | S_IWUSR,
653 show_therm_crit, set_therm_crit, 1+11),
654 SENSOR_ATTR(temp6_crit, S_IRUGO | S_IWUSR,
655 show_therm_crit, set_therm_crit, 2+11),
656 };
657
658 #define THERM_UNIT_ATTRS(X) \
659 &therm_input[X].dev_attr.attr, \
660 &therm_status[X].dev_attr.attr, \
661 &therm_min[X].dev_attr.attr, \
662 &therm_max[X].dev_attr.attr, \
663 &therm_crit[X].dev_attr.attr
664
665 static struct attribute * pc8736x_therm_attr_array[] = {
666 THERM_UNIT_ATTRS(0),
667 THERM_UNIT_ATTRS(1),
668 THERM_UNIT_ATTRS(2),
669 NULL
670 };
671 static const struct attribute_group pc8736x_therm_group = {
672 .attrs = pc8736x_therm_attr_array,
673 };
674
675 static ssize_t show_temp_input(struct device *dev, struct device_attribute *devattr, char *buf)
676 {
677 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
678 struct pc87360_data *data = pc87360_update_device(dev);
679 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
680 }
681 static ssize_t show_temp_min(struct device *dev, struct device_attribute *devattr, char *buf)
682 {
683 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
684 struct pc87360_data *data = pc87360_update_device(dev);
685 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[attr->index]));
686 }
687 static ssize_t show_temp_max(struct device *dev, 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, "%d\n", TEMP_FROM_REG(data->temp_max[attr->index]));
692 }
693 static ssize_t show_temp_crit(struct device *dev, struct device_attribute *devattr, char *buf)
694 {
695 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
696 struct pc87360_data *data = pc87360_update_device(dev);
697 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[attr->index]));
698 }
699 static ssize_t show_temp_status(struct device *dev, struct device_attribute *devattr, char *buf)
700 {
701 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
702 struct pc87360_data *data = pc87360_update_device(dev);
703 return sprintf(buf, "%d\n", data->temp_status[attr->index]);
704 }
705 static ssize_t set_temp_min(struct device *dev, struct device_attribute *devattr, const char *buf,
706 size_t count)
707 {
708 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
709 struct pc87360_data *data = dev_get_drvdata(dev);
710 long val = simple_strtol(buf, NULL, 10);
711
712 mutex_lock(&data->update_lock);
713 data->temp_min[attr->index] = TEMP_TO_REG(val);
714 pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MIN,
715 data->temp_min[attr->index]);
716 mutex_unlock(&data->update_lock);
717 return count;
718 }
719 static ssize_t set_temp_max(struct device *dev, struct device_attribute *devattr, const char *buf,
720 size_t count)
721 {
722 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
723 struct pc87360_data *data = dev_get_drvdata(dev);
724 long val = simple_strtol(buf, NULL, 10);
725
726 mutex_lock(&data->update_lock);
727 data->temp_max[attr->index] = TEMP_TO_REG(val);
728 pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MAX,
729 data->temp_max[attr->index]);
730 mutex_unlock(&data->update_lock);
731 return count;
732 }
733 static ssize_t set_temp_crit(struct device *dev, struct device_attribute *devattr, const char *buf,
734 size_t count)
735 {
736 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
737 struct pc87360_data *data = dev_get_drvdata(dev);
738 long val = simple_strtol(buf, NULL, 10);
739
740 mutex_lock(&data->update_lock);
741 data->temp_crit[attr->index] = TEMP_TO_REG(val);
742 pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_CRIT,
743 data->temp_crit[attr->index]);
744 mutex_unlock(&data->update_lock);
745 return count;
746 }
747
748 static struct sensor_device_attribute temp_input[] = {
749 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0),
750 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1),
751 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2),
752 };
753 static struct sensor_device_attribute temp_status[] = {
754 SENSOR_ATTR(temp1_status, S_IRUGO, show_temp_status, NULL, 0),
755 SENSOR_ATTR(temp2_status, S_IRUGO, show_temp_status, NULL, 1),
756 SENSOR_ATTR(temp3_status, S_IRUGO, show_temp_status, NULL, 2),
757 };
758 static struct sensor_device_attribute temp_min[] = {
759 SENSOR_ATTR(temp1_min, S_IRUGO | S_IWUSR,
760 show_temp_min, set_temp_min, 0),
761 SENSOR_ATTR(temp2_min, S_IRUGO | S_IWUSR,
762 show_temp_min, set_temp_min, 1),
763 SENSOR_ATTR(temp3_min, S_IRUGO | S_IWUSR,
764 show_temp_min, set_temp_min, 2),
765 };
766 static struct sensor_device_attribute temp_max[] = {
767 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
768 show_temp_max, set_temp_max, 0),
769 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
770 show_temp_max, set_temp_max, 1),
771 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
772 show_temp_max, set_temp_max, 2),
773 };
774 static struct sensor_device_attribute temp_crit[] = {
775 SENSOR_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
776 show_temp_crit, set_temp_crit, 0),
777 SENSOR_ATTR(temp2_crit, S_IRUGO | S_IWUSR,
778 show_temp_crit, set_temp_crit, 1),
779 SENSOR_ATTR(temp3_crit, S_IRUGO | S_IWUSR,
780 show_temp_crit, set_temp_crit, 2),
781 };
782
783 static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *attr, char *buf)
784 {
785 struct pc87360_data *data = pc87360_update_device(dev);
786 return sprintf(buf, "%u\n", data->temp_alarms);
787 }
788 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
789
790 #define TEMP_UNIT_ATTRS(X) \
791 &temp_input[X].dev_attr.attr, \
792 &temp_status[X].dev_attr.attr, \
793 &temp_min[X].dev_attr.attr, \
794 &temp_max[X].dev_attr.attr, \
795 &temp_crit[X].dev_attr.attr
796
797 static struct attribute * pc8736x_temp_attr_array[] = {
798 TEMP_UNIT_ATTRS(0),
799 TEMP_UNIT_ATTRS(1),
800 TEMP_UNIT_ATTRS(2),
801 /* include the few miscellaneous atts here */
802 &dev_attr_alarms_temp.attr,
803 NULL
804 };
805 static const struct attribute_group pc8736x_temp_group = {
806 .attrs = pc8736x_temp_attr_array,
807 };
808
809 static ssize_t show_name(struct device *dev, struct device_attribute
810 *devattr, char *buf)
811 {
812 struct pc87360_data *data = dev_get_drvdata(dev);
813 return sprintf(buf, "%s\n", data->name);
814 }
815 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
816
817 /*
818 * Device detection, registration and update
819 */
820
821 static int __init pc87360_find(int sioaddr, u8 *devid, unsigned short *addresses)
822 {
823 u16 val;
824 int i;
825 int nrdev; /* logical device count */
826
827 /* No superio_enter */
828
829 /* Identify device */
830 val = superio_inb(sioaddr, DEVID);
831 switch (val) {
832 case 0xE1: /* PC87360 */
833 case 0xE8: /* PC87363 */
834 case 0xE4: /* PC87364 */
835 nrdev = 1;
836 break;
837 case 0xE5: /* PC87365 */
838 case 0xE9: /* PC87366 */
839 nrdev = 3;
840 break;
841 default:
842 superio_exit(sioaddr);
843 return -ENODEV;
844 }
845 /* Remember the device id */
846 *devid = val;
847
848 for (i = 0; i < nrdev; i++) {
849 /* select logical device */
850 superio_outb(sioaddr, DEV, logdev[i]);
851
852 val = superio_inb(sioaddr, ACT);
853 if (!(val & 0x01)) {
854 printk(KERN_INFO "pc87360: Device 0x%02x not "
855 "activated\n", logdev[i]);
856 continue;
857 }
858
859 val = (superio_inb(sioaddr, BASE) << 8)
860 | superio_inb(sioaddr, BASE + 1);
861 if (!val) {
862 printk(KERN_INFO "pc87360: Base address not set for "
863 "device 0x%02x\n", logdev[i]);
864 continue;
865 }
866
867 addresses[i] = val;
868
869 if (i==0) { /* Fans */
870 confreg[0] = superio_inb(sioaddr, 0xF0);
871 confreg[1] = superio_inb(sioaddr, 0xF1);
872
873 #ifdef DEBUG
874 printk(KERN_DEBUG "pc87360: Fan 1: mon=%d "
875 "ctrl=%d inv=%d\n", (confreg[0]>>2)&1,
876 (confreg[0]>>3)&1, (confreg[0]>>4)&1);
877 printk(KERN_DEBUG "pc87360: Fan 2: mon=%d "
878 "ctrl=%d inv=%d\n", (confreg[0]>>5)&1,
879 (confreg[0]>>6)&1, (confreg[0]>>7)&1);
880 printk(KERN_DEBUG "pc87360: Fan 3: mon=%d "
881 "ctrl=%d inv=%d\n", confreg[1]&1,
882 (confreg[1]>>1)&1, (confreg[1]>>2)&1);
883 #endif
884 } else if (i==1) { /* Voltages */
885 /* Are we using thermistors? */
886 if (*devid == 0xE9) { /* PC87366 */
887 /* These registers are not logical-device
888 specific, just that we won't need them if
889 we don't use the VLM device */
890 confreg[2] = superio_inb(sioaddr, 0x2B);
891 confreg[3] = superio_inb(sioaddr, 0x25);
892
893 if (confreg[2] & 0x40) {
894 printk(KERN_INFO "pc87360: Using "
895 "thermistors for temperature "
896 "monitoring\n");
897 }
898 if (confreg[3] & 0xE0) {
899 printk(KERN_INFO "pc87360: VID "
900 "inputs routed (mode %u)\n",
901 confreg[3] >> 5);
902 }
903 }
904 }
905 }
906
907 superio_exit(sioaddr);
908 return 0;
909 }
910
911 static int __devinit pc87360_probe(struct platform_device *pdev)
912 {
913 int i;
914 struct pc87360_data *data;
915 int err = 0;
916 const char *name = "pc87360";
917 int use_thermistors = 0;
918 struct device *dev = &pdev->dev;
919
920 if (!(data = kzalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
921 return -ENOMEM;
922
923 data->fannr = 2;
924 data->innr = 0;
925 data->tempnr = 0;
926
927 switch (devid) {
928 case 0xe8:
929 name = "pc87363";
930 break;
931 case 0xe4:
932 name = "pc87364";
933 data->fannr = 3;
934 break;
935 case 0xe5:
936 name = "pc87365";
937 data->fannr = extra_isa[0] ? 3 : 0;
938 data->innr = extra_isa[1] ? 11 : 0;
939 data->tempnr = extra_isa[2] ? 2 : 0;
940 break;
941 case 0xe9:
942 name = "pc87366";
943 data->fannr = extra_isa[0] ? 3 : 0;
944 data->innr = extra_isa[1] ? 14 : 0;
945 data->tempnr = extra_isa[2] ? 3 : 0;
946 break;
947 }
948
949 data->name = name;
950 data->valid = 0;
951 mutex_init(&data->lock);
952 mutex_init(&data->update_lock);
953 platform_set_drvdata(pdev, data);
954
955 for (i = 0; i < 3; i++) {
956 if (((data->address[i] = extra_isa[i]))
957 && !request_region(extra_isa[i], PC87360_EXTENT,
958 pc87360_driver.driver.name)) {
959 dev_err(dev, "Region 0x%x-0x%x already "
960 "in use!\n", extra_isa[i],
961 extra_isa[i]+PC87360_EXTENT-1);
962 for (i--; i >= 0; i--)
963 release_region(extra_isa[i], PC87360_EXTENT);
964 err = -EBUSY;
965 goto ERROR1;
966 }
967 }
968
969 /* Retrieve the fans configuration from Super-I/O space */
970 if (data->fannr)
971 data->fan_conf = confreg[0] | (confreg[1] << 8);
972
973 /* Use the correct reference voltage
974 Unless both the VLM and the TMS logical devices agree to
975 use an external Vref, the internal one is used. */
976 if (data->innr) {
977 i = pc87360_read_value(data, LD_IN, NO_BANK,
978 PC87365_REG_IN_CONFIG);
979 if (data->tempnr) {
980 i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
981 PC87365_REG_TEMP_CONFIG);
982 }
983 data->in_vref = (i&0x02) ? 3025 : 2966;
984 dev_dbg(dev, "Using %s reference voltage\n",
985 (i&0x02) ? "external" : "internal");
986
987 data->vid_conf = confreg[3];
988 data->vrm = vid_which_vrm();
989 }
990
991 /* Fan clock dividers may be needed before any data is read */
992 for (i = 0; i < data->fannr; i++) {
993 if (FAN_CONFIG_MONITOR(data->fan_conf, i))
994 data->fan_status[i] = pc87360_read_value(data,
995 LD_FAN, NO_BANK,
996 PC87360_REG_FAN_STATUS(i));
997 }
998
999 if (init > 0) {
1000 if (devid == 0xe9 && data->address[1]) /* PC87366 */
1001 use_thermistors = confreg[2] & 0x40;
1002
1003 pc87360_init_device(pdev, use_thermistors);
1004 }
1005
1006 /* Register all-or-nothing sysfs groups */
1007
1008 if (data->innr &&
1009 (err = sysfs_create_group(&dev->kobj,
1010 &pc8736x_vin_group)))
1011 goto ERROR3;
1012
1013 if (data->innr == 14 &&
1014 (err = sysfs_create_group(&dev->kobj,
1015 &pc8736x_therm_group)))
1016 goto ERROR3;
1017
1018 /* create device attr-files for varying sysfs groups */
1019
1020 if (data->tempnr) {
1021 for (i = 0; i < data->tempnr; i++) {
1022 if ((err = device_create_file(dev,
1023 &temp_input[i].dev_attr))
1024 || (err = device_create_file(dev,
1025 &temp_min[i].dev_attr))
1026 || (err = device_create_file(dev,
1027 &temp_max[i].dev_attr))
1028 || (err = device_create_file(dev,
1029 &temp_crit[i].dev_attr))
1030 || (err = device_create_file(dev,
1031 &temp_status[i].dev_attr)))
1032 goto ERROR3;
1033 }
1034 if ((err = device_create_file(dev, &dev_attr_alarms_temp)))
1035 goto ERROR3;
1036 }
1037
1038 for (i = 0; i < data->fannr; i++) {
1039 if (FAN_CONFIG_MONITOR(data->fan_conf, i)
1040 && ((err = device_create_file(dev,
1041 &fan_input[i].dev_attr))
1042 || (err = device_create_file(dev,
1043 &fan_min[i].dev_attr))
1044 || (err = device_create_file(dev,
1045 &fan_div[i].dev_attr))
1046 || (err = device_create_file(dev,
1047 &fan_status[i].dev_attr))))
1048 goto ERROR3;
1049
1050 if (FAN_CONFIG_CONTROL(data->fan_conf, i)
1051 && (err = device_create_file(dev, &pwm[i].dev_attr)))
1052 goto ERROR3;
1053 }
1054
1055 if ((err = device_create_file(dev, &dev_attr_name)))
1056 goto ERROR3;
1057
1058 data->hwmon_dev = hwmon_device_register(dev);
1059 if (IS_ERR(data->hwmon_dev)) {
1060 err = PTR_ERR(data->hwmon_dev);
1061 goto ERROR3;
1062 }
1063 return 0;
1064
1065 ERROR3:
1066 device_remove_file(dev, &dev_attr_name);
1067 /* can still remove groups whose members were added individually */
1068 sysfs_remove_group(&dev->kobj, &pc8736x_temp_group);
1069 sysfs_remove_group(&dev->kobj, &pc8736x_fan_group);
1070 sysfs_remove_group(&dev->kobj, &pc8736x_therm_group);
1071 sysfs_remove_group(&dev->kobj, &pc8736x_vin_group);
1072 for (i = 0; i < 3; i++) {
1073 if (data->address[i]) {
1074 release_region(data->address[i], PC87360_EXTENT);
1075 }
1076 }
1077 ERROR1:
1078 kfree(data);
1079 return err;
1080 }
1081
1082 static int __devexit pc87360_remove(struct platform_device *pdev)
1083 {
1084 struct pc87360_data *data = platform_get_drvdata(pdev);
1085 int i;
1086
1087 hwmon_device_unregister(data->hwmon_dev);
1088
1089 device_remove_file(&pdev->dev, &dev_attr_name);
1090 sysfs_remove_group(&pdev->dev.kobj, &pc8736x_temp_group);
1091 sysfs_remove_group(&pdev->dev.kobj, &pc8736x_fan_group);
1092 sysfs_remove_group(&pdev->dev.kobj, &pc8736x_therm_group);
1093 sysfs_remove_group(&pdev->dev.kobj, &pc8736x_vin_group);
1094
1095 for (i = 0; i < 3; i++) {
1096 if (data->address[i]) {
1097 release_region(data->address[i], PC87360_EXTENT);
1098 }
1099 }
1100 kfree(data);
1101
1102 return 0;
1103 }
1104
1105 /* ldi is the logical device index
1106 bank is for voltages and temperatures only */
1107 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1108 u8 reg)
1109 {
1110 int res;
1111
1112 mutex_lock(&(data->lock));
1113 if (bank != NO_BANK)
1114 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1115 res = inb_p(data->address[ldi] + reg);
1116 mutex_unlock(&(data->lock));
1117
1118 return res;
1119 }
1120
1121 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1122 u8 reg, u8 value)
1123 {
1124 mutex_lock(&(data->lock));
1125 if (bank != NO_BANK)
1126 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1127 outb_p(value, data->address[ldi] + reg);
1128 mutex_unlock(&(data->lock));
1129 }
1130
1131 static void pc87360_init_device(struct platform_device *pdev,
1132 int use_thermistors)
1133 {
1134 struct pc87360_data *data = platform_get_drvdata(pdev);
1135 int i, nr;
1136 const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1137 const u8 init_temp[3] = { 2, 2, 1 };
1138 u8 reg;
1139
1140 if (init >= 2 && data->innr) {
1141 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1142 PC87365_REG_IN_CONVRATE);
1143 dev_info(&pdev->dev, "VLM conversion set to "
1144 "1s period, 160us delay\n");
1145 pc87360_write_value(data, LD_IN, NO_BANK,
1146 PC87365_REG_IN_CONVRATE,
1147 (reg & 0xC0) | 0x11);
1148 }
1149
1150 nr = data->innr < 11 ? data->innr : 11;
1151 for (i = 0; i < nr; i++) {
1152 if (init >= init_in[i]) {
1153 /* Forcibly enable voltage channel */
1154 reg = pc87360_read_value(data, LD_IN, i,
1155 PC87365_REG_IN_STATUS);
1156 if (!(reg & 0x01)) {
1157 dev_dbg(&pdev->dev, "Forcibly "
1158 "enabling in%d\n", i);
1159 pc87360_write_value(data, LD_IN, i,
1160 PC87365_REG_IN_STATUS,
1161 (reg & 0x68) | 0x87);
1162 }
1163 }
1164 }
1165
1166 /* We can't blindly trust the Super-I/O space configuration bit,
1167 most BIOS won't set it properly */
1168 for (i = 11; i < data->innr; i++) {
1169 reg = pc87360_read_value(data, LD_IN, i,
1170 PC87365_REG_TEMP_STATUS);
1171 use_thermistors = use_thermistors || (reg & 0x01);
1172 }
1173
1174 i = use_thermistors ? 2 : 0;
1175 for (; i < data->tempnr; i++) {
1176 if (init >= init_temp[i]) {
1177 /* Forcibly enable temperature channel */
1178 reg = pc87360_read_value(data, LD_TEMP, i,
1179 PC87365_REG_TEMP_STATUS);
1180 if (!(reg & 0x01)) {
1181 dev_dbg(&pdev->dev, "Forcibly "
1182 "enabling temp%d\n", i+1);
1183 pc87360_write_value(data, LD_TEMP, i,
1184 PC87365_REG_TEMP_STATUS,
1185 0xCF);
1186 }
1187 }
1188 }
1189
1190 if (use_thermistors) {
1191 for (i = 11; i < data->innr; i++) {
1192 if (init >= init_in[i]) {
1193 /* The pin may already be used by thermal
1194 diodes */
1195 reg = pc87360_read_value(data, LD_TEMP,
1196 (i-11)/2, PC87365_REG_TEMP_STATUS);
1197 if (reg & 0x01) {
1198 dev_dbg(&pdev->dev, "Skipping "
1199 "temp%d, pin already in use "
1200 "by temp%d\n", i-7, (i-11)/2);
1201 continue;
1202 }
1203
1204 /* Forcibly enable thermistor channel */
1205 reg = pc87360_read_value(data, LD_IN, i,
1206 PC87365_REG_IN_STATUS);
1207 if (!(reg & 0x01)) {
1208 dev_dbg(&pdev->dev, "Forcibly "
1209 "enabling temp%d\n", i-7);
1210 pc87360_write_value(data, LD_IN, i,
1211 PC87365_REG_TEMP_STATUS,
1212 (reg & 0x60) | 0x8F);
1213 }
1214 }
1215 }
1216 }
1217
1218 if (data->innr) {
1219 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1220 PC87365_REG_IN_CONFIG);
1221 if (reg & 0x01) {
1222 dev_dbg(&pdev->dev, "Forcibly "
1223 "enabling monitoring (VLM)\n");
1224 pc87360_write_value(data, LD_IN, NO_BANK,
1225 PC87365_REG_IN_CONFIG,
1226 reg & 0xFE);
1227 }
1228 }
1229
1230 if (data->tempnr) {
1231 reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1232 PC87365_REG_TEMP_CONFIG);
1233 if (reg & 0x01) {
1234 dev_dbg(&pdev->dev, "Forcibly enabling "
1235 "monitoring (TMS)\n");
1236 pc87360_write_value(data, LD_TEMP, NO_BANK,
1237 PC87365_REG_TEMP_CONFIG,
1238 reg & 0xFE);
1239 }
1240
1241 if (init >= 2) {
1242 /* Chip config as documented by National Semi. */
1243 pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1244 /* We voluntarily omit the bank here, in case the
1245 sequence itself matters. It shouldn't be a problem,
1246 since nobody else is supposed to access the
1247 device at that point. */
1248 pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1249 pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1250 pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1251 pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1252 }
1253 }
1254 }
1255
1256 static void pc87360_autodiv(struct device *dev, int nr)
1257 {
1258 struct pc87360_data *data = dev_get_drvdata(dev);
1259 u8 old_min = data->fan_min[nr];
1260
1261 /* Increase clock divider if needed and possible */
1262 if ((data->fan_status[nr] & 0x04) /* overflow flag */
1263 || (data->fan[nr] >= 224)) { /* next to overflow */
1264 if ((data->fan_status[nr] & 0x60) != 0x60) {
1265 data->fan_status[nr] += 0x20;
1266 data->fan_min[nr] >>= 1;
1267 data->fan[nr] >>= 1;
1268 dev_dbg(dev, "Increasing "
1269 "clock divider to %d for fan %d\n",
1270 FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
1271 }
1272 } else {
1273 /* Decrease clock divider if possible */
1274 while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1275 && data->fan[nr] < 85 /* bad accuracy */
1276 && (data->fan_status[nr] & 0x60) != 0x00) {
1277 data->fan_status[nr] -= 0x20;
1278 data->fan_min[nr] <<= 1;
1279 data->fan[nr] <<= 1;
1280 dev_dbg(dev, "Decreasing "
1281 "clock divider to %d for fan %d\n",
1282 FAN_DIV_FROM_REG(data->fan_status[nr]),
1283 nr+1);
1284 }
1285 }
1286
1287 /* Write new fan min if it changed */
1288 if (old_min != data->fan_min[nr]) {
1289 pc87360_write_value(data, LD_FAN, NO_BANK,
1290 PC87360_REG_FAN_MIN(nr),
1291 data->fan_min[nr]);
1292 }
1293 }
1294
1295 static struct pc87360_data *pc87360_update_device(struct device *dev)
1296 {
1297 struct pc87360_data *data = dev_get_drvdata(dev);
1298 u8 i;
1299
1300 mutex_lock(&data->update_lock);
1301
1302 if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1303 dev_dbg(dev, "Data update\n");
1304
1305 /* Fans */
1306 for (i = 0; i < data->fannr; i++) {
1307 if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1308 data->fan_status[i] =
1309 pc87360_read_value(data, LD_FAN,
1310 NO_BANK, PC87360_REG_FAN_STATUS(i));
1311 data->fan[i] = pc87360_read_value(data, LD_FAN,
1312 NO_BANK, PC87360_REG_FAN(i));
1313 data->fan_min[i] = pc87360_read_value(data,
1314 LD_FAN, NO_BANK,
1315 PC87360_REG_FAN_MIN(i));
1316 /* Change clock divider if needed */
1317 pc87360_autodiv(dev, i);
1318 /* Clear bits and write new divider */
1319 pc87360_write_value(data, LD_FAN, NO_BANK,
1320 PC87360_REG_FAN_STATUS(i),
1321 data->fan_status[i]);
1322 }
1323 if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1324 data->pwm[i] = pc87360_read_value(data, LD_FAN,
1325 NO_BANK, PC87360_REG_PWM(i));
1326 }
1327
1328 /* Voltages */
1329 for (i = 0; i < data->innr; i++) {
1330 data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1331 PC87365_REG_IN_STATUS);
1332 /* Clear bits */
1333 pc87360_write_value(data, LD_IN, i,
1334 PC87365_REG_IN_STATUS,
1335 data->in_status[i]);
1336 if ((data->in_status[i] & 0x81) == 0x81) {
1337 data->in[i] = pc87360_read_value(data, LD_IN,
1338 i, PC87365_REG_IN);
1339 }
1340 if (data->in_status[i] & 0x01) {
1341 data->in_min[i] = pc87360_read_value(data,
1342 LD_IN, i,
1343 PC87365_REG_IN_MIN);
1344 data->in_max[i] = pc87360_read_value(data,
1345 LD_IN, i,
1346 PC87365_REG_IN_MAX);
1347 if (i >= 11)
1348 data->in_crit[i-11] =
1349 pc87360_read_value(data, LD_IN,
1350 i, PC87365_REG_TEMP_CRIT);
1351 }
1352 }
1353 if (data->innr) {
1354 data->in_alarms = pc87360_read_value(data, LD_IN,
1355 NO_BANK, PC87365_REG_IN_ALARMS1)
1356 | ((pc87360_read_value(data, LD_IN,
1357 NO_BANK, PC87365_REG_IN_ALARMS2)
1358 & 0x07) << 8);
1359 data->vid = (data->vid_conf & 0xE0) ?
1360 pc87360_read_value(data, LD_IN,
1361 NO_BANK, PC87365_REG_VID) : 0x1F;
1362 }
1363
1364 /* Temperatures */
1365 for (i = 0; i < data->tempnr; i++) {
1366 data->temp_status[i] = pc87360_read_value(data,
1367 LD_TEMP, i,
1368 PC87365_REG_TEMP_STATUS);
1369 /* Clear bits */
1370 pc87360_write_value(data, LD_TEMP, i,
1371 PC87365_REG_TEMP_STATUS,
1372 data->temp_status[i]);
1373 if ((data->temp_status[i] & 0x81) == 0x81) {
1374 data->temp[i] = pc87360_read_value(data,
1375 LD_TEMP, i,
1376 PC87365_REG_TEMP);
1377 }
1378 if (data->temp_status[i] & 0x01) {
1379 data->temp_min[i] = pc87360_read_value(data,
1380 LD_TEMP, i,
1381 PC87365_REG_TEMP_MIN);
1382 data->temp_max[i] = pc87360_read_value(data,
1383 LD_TEMP, i,
1384 PC87365_REG_TEMP_MAX);
1385 data->temp_crit[i] = pc87360_read_value(data,
1386 LD_TEMP, i,
1387 PC87365_REG_TEMP_CRIT);
1388 }
1389 }
1390 if (data->tempnr) {
1391 data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1392 NO_BANK, PC87365_REG_TEMP_ALARMS)
1393 & 0x3F;
1394 }
1395
1396 data->last_updated = jiffies;
1397 data->valid = 1;
1398 }
1399
1400 mutex_unlock(&data->update_lock);
1401
1402 return data;
1403 }
1404
1405 static int __init pc87360_device_add(unsigned short address)
1406 {
1407 struct resource res = {
1408 .name = "pc87360",
1409 .flags = IORESOURCE_IO,
1410 };
1411 int err, i;
1412
1413 pdev = platform_device_alloc("pc87360", address);
1414 if (!pdev) {
1415 err = -ENOMEM;
1416 printk(KERN_ERR "pc87360: Device allocation failed\n");
1417 goto exit;
1418 }
1419
1420 for (i = 0; i < 3; i++) {
1421 if (!extra_isa[i])
1422 continue;
1423 res.start = extra_isa[i];
1424 res.end = extra_isa[i] + PC87360_EXTENT - 1;
1425
1426 err = acpi_check_resource_conflict(&res);
1427 if (err)
1428 goto exit_device_put;
1429
1430 err = platform_device_add_resources(pdev, &res, 1);
1431 if (err) {
1432 printk(KERN_ERR "pc87360: Device resource[%d] "
1433 "addition failed (%d)\n", i, err);
1434 goto exit_device_put;
1435 }
1436 }
1437
1438 err = platform_device_add(pdev);
1439 if (err) {
1440 printk(KERN_ERR "pc87360: Device addition failed (%d)\n",
1441 err);
1442 goto exit_device_put;
1443 }
1444
1445 return 0;
1446
1447 exit_device_put:
1448 platform_device_put(pdev);
1449 exit:
1450 return err;
1451 }
1452
1453 static int __init pc87360_init(void)
1454 {
1455 int err, i;
1456 unsigned short address = 0;
1457
1458 if (pc87360_find(0x2e, &devid, extra_isa)
1459 && pc87360_find(0x4e, &devid, extra_isa)) {
1460 printk(KERN_WARNING "pc87360: PC8736x not detected, "
1461 "module not inserted.\n");
1462 return -ENODEV;
1463 }
1464
1465 /* Arbitrarily pick one of the addresses */
1466 for (i = 0; i < 3; i++) {
1467 if (extra_isa[i] != 0x0000) {
1468 address = extra_isa[i];
1469 break;
1470 }
1471 }
1472
1473 if (address == 0x0000) {
1474 printk(KERN_WARNING "pc87360: No active logical device, "
1475 "module not inserted.\n");
1476 return -ENODEV;
1477 }
1478
1479 err = platform_driver_register(&pc87360_driver);
1480 if (err)
1481 goto exit;
1482
1483 /* Sets global pdev as a side effect */
1484 err = pc87360_device_add(address);
1485 if (err)
1486 goto exit_driver;
1487
1488 return 0;
1489
1490 exit_driver:
1491 platform_driver_unregister(&pc87360_driver);
1492 exit:
1493 return err;
1494 }
1495
1496 static void __exit pc87360_exit(void)
1497 {
1498 platform_device_unregister(pdev);
1499 platform_driver_unregister(&pc87360_driver);
1500 }
1501
1502
1503 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1504 MODULE_DESCRIPTION("PC8736x hardware monitor");
1505 MODULE_LICENSE("GPL");
1506
1507 module_init(pc87360_init);
1508 module_exit(pc87360_exit);
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