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Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / drivers / hwmon / vt8231.c
blob4465483cb7ff78adc49fd50aa75b5eaadfccef0e
1 /*
2 vt8231.c - Part of lm_sensors, Linux kernel modules
3 for hardware monitoring
4
5 <<<<<<< HEAD:drivers/hwmon/vt8231.c
6 Copyright (c) 2005 Roger Lucas <roger@planbit.co.uk>
7 =======
8 Copyright (c) 2005 Roger Lucas <vt8231@hiddenengine.co.uk>
9 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
10 Copyright (c) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
11 Aaron M. Marsh <amarsh@sdf.lonestar.org>
12
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
17
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
22
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28 /* Supports VIA VT8231 South Bridge embedded sensors
29 */
30
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/slab.h>
34 #include <linux/pci.h>
35 #include <linux/jiffies.h>
36 #include <linux/platform_device.h>
37 #include <linux/hwmon.h>
38 #include <linux/hwmon-sysfs.h>
39 #include <linux/hwmon-vid.h>
40 #include <linux/err.h>
41 #include <linux/mutex.h>
42 #include <asm/io.h>
43
44 static int force_addr;
45 module_param(force_addr, int, 0);
46 MODULE_PARM_DESC(force_addr, "Initialize the base address of the sensors");
47
48 static struct platform_device *pdev;
49
50 #define VT8231_EXTENT 0x80
51 #define VT8231_BASE_REG 0x70
52 #define VT8231_ENABLE_REG 0x74
53
54 /* The VT8231 registers
55
56 The reset value for the input channel configuration is used (Reg 0x4A=0x07)
57 which sets the selected inputs marked with '*' below if multiple options are
58 possible:
59
60 Voltage Mode Temperature Mode
61 Sensor Linux Id Linux Id VIA Id
62 -------- -------- -------- ------
63 CPU Diode N/A temp1 0
64 UIC1 in0 temp2 * 1
65 UIC2 in1 * temp3 2
66 UIC3 in2 * temp4 3
67 UIC4 in3 * temp5 4
68 UIC5 in4 * temp6 5
69 3.3V in5 N/A
70
71 Note that the BIOS may set the configuration register to a different value
72 to match the motherboard configuration.
73 */
74
75 /* fans numbered 0-1 */
76 #define VT8231_REG_FAN_MIN(nr) (0x3b + (nr))
77 #define VT8231_REG_FAN(nr) (0x29 + (nr))
78
79 /* Voltage inputs numbered 0-5 */
80
81 static const u8 regvolt[] = { 0x21, 0x22, 0x23, 0x24, 0x25, 0x26 };
82 static const u8 regvoltmax[] = { 0x3d, 0x2b, 0x2d, 0x2f, 0x31, 0x33 };
83 static const u8 regvoltmin[] = { 0x3e, 0x2c, 0x2e, 0x30, 0x32, 0x34 };
84
85 /* Temperatures are numbered 1-6 according to the Linux kernel specification.
86 **
87 ** In the VIA datasheet, however, the temperatures are numbered from zero.
88 ** Since it is important that this driver can easily be compared to the VIA
89 ** datasheet, we will use the VIA numbering within this driver and map the
90 ** kernel sysfs device name to the VIA number in the sysfs callback.
91 */
92
93 #define VT8231_REG_TEMP_LOW01 0x49
94 #define VT8231_REG_TEMP_LOW25 0x4d
95
96 static const u8 regtemp[] = { 0x1f, 0x21, 0x22, 0x23, 0x24, 0x25 };
97 static const u8 regtempmax[] = { 0x39, 0x3d, 0x2b, 0x2d, 0x2f, 0x31 };
98 static const u8 regtempmin[] = { 0x3a, 0x3e, 0x2c, 0x2e, 0x30, 0x32 };
99
100 #define TEMP_FROM_REG(reg) (((253 * 4 - (reg)) * 550 + 105) / 210)
101 #define TEMP_MAXMIN_FROM_REG(reg) (((253 - (reg)) * 2200 + 105) / 210)
102 #define TEMP_MAXMIN_TO_REG(val) (253 - ((val) * 210 + 1100) / 2200)
103
104 #define VT8231_REG_CONFIG 0x40
105 #define VT8231_REG_ALARM1 0x41
106 #define VT8231_REG_ALARM2 0x42
107 #define VT8231_REG_FANDIV 0x47
108 #define VT8231_REG_UCH_CONFIG 0x4a
109 #define VT8231_REG_TEMP1_CONFIG 0x4b
110 #define VT8231_REG_TEMP2_CONFIG 0x4c
111
112 /* temps 0-5 as numbered in VIA datasheet - see later for mapping to Linux
113 ** numbering
114 */
115 #define ISTEMP(i, ch_config) ((i) == 0 ? 1 : \
116 ((ch_config) >> ((i)+1)) & 0x01)
117 /* voltages 0-5 */
118 #define ISVOLT(i, ch_config) ((i) == 5 ? 1 : \
119 !(((ch_config) >> ((i)+2)) & 0x01))
120
121 #define DIV_FROM_REG(val) (1 << (val))
122
123 /* NB The values returned here are NOT temperatures. The calibration curves
124 ** for the thermistor curves are board-specific and must go in the
125 ** sensors.conf file. Temperature sensors are actually ten bits, but the
126 ** VIA datasheet only considers the 8 MSBs obtained from the regtemp[]
127 ** register. The temperature value returned should have a magnitude of 3,
128 ** so we use the VIA scaling as the "true" scaling and use the remaining 2
129 ** LSBs as fractional precision.
130 **
131 ** All the on-chip hardware temperature comparisons for the alarms are only
132 ** 8-bits wide, and compare against the 8 MSBs of the temperature. The bits
133 ** in the registers VT8231_REG_TEMP_LOW01 and VT8231_REG_TEMP_LOW25 are
134 ** ignored.
135 */
136
137 /******** FAN RPM CONVERSIONS ********
138 ** This chip saturates back at 0, not at 255 like many the other chips.
139 ** So, 0 means 0 RPM
140 */
141 static inline u8 FAN_TO_REG(long rpm, int div)
142 {
143 if (rpm == 0)
144 return 0;
145 return SENSORS_LIMIT(1310720 / (rpm * div), 1, 255);
146 }
147
148 #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : 1310720 / ((val) * (div)))
149
150 struct vt8231_data {
151 unsigned short addr;
152 const char *name;
153
154 struct mutex update_lock;
155 struct device *hwmon_dev;
156 char valid; /* !=0 if following fields are valid */
157 unsigned long last_updated; /* In jiffies */
158
159 u8 in[6]; /* Register value */
160 u8 in_max[6]; /* Register value */
161 u8 in_min[6]; /* Register value */
162 u16 temp[6]; /* Register value 10 bit, right aligned */
163 u8 temp_max[6]; /* Register value */
164 u8 temp_min[6]; /* Register value */
165 u8 fan[2]; /* Register value */
166 u8 fan_min[2]; /* Register value */
167 u8 fan_div[2]; /* Register encoding, shifted right */
168 u16 alarms; /* Register encoding */
169 u8 uch_config;
170 };
171
172 static struct pci_dev *s_bridge;
173 static int vt8231_probe(struct platform_device *pdev);
174 static int __devexit vt8231_remove(struct platform_device *pdev);
175 static struct vt8231_data *vt8231_update_device(struct device *dev);
176 static void vt8231_init_device(struct vt8231_data *data);
177
178 static inline int vt8231_read_value(struct vt8231_data *data, u8 reg)
179 {
180 return inb_p(data->addr + reg);
181 }
182
183 static inline void vt8231_write_value(struct vt8231_data *data, u8 reg,
184 u8 value)
185 {
186 outb_p(value, data->addr + reg);
187 }
188
189 /* following are the sysfs callback functions */
190 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
191 char *buf)
192 {
193 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
194 int nr = sensor_attr->index;
195 struct vt8231_data *data = vt8231_update_device(dev);
196
197 return sprintf(buf, "%d\n", ((data->in[nr] - 3) * 10000) / 958);
198 }
199
200 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
201 char *buf)
202 {
203 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
204 int nr = sensor_attr->index;
205 struct vt8231_data *data = vt8231_update_device(dev);
206
207 return sprintf(buf, "%d\n", ((data->in_min[nr] - 3) * 10000) / 958);
208 }
209
210 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
211 char *buf)
212 {
213 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
214 int nr = sensor_attr->index;
215 struct vt8231_data *data = vt8231_update_device(dev);
216
217 return sprintf(buf, "%d\n", (((data->in_max[nr] - 3) * 10000) / 958));
218 }
219
220 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
221 const char *buf, size_t count)
222 {
223 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
224 int nr = sensor_attr->index;
225 struct vt8231_data *data = dev_get_drvdata(dev);
226 unsigned long val = simple_strtoul(buf, NULL, 10);
227
228 mutex_lock(&data->update_lock);
229 data->in_min[nr] = SENSORS_LIMIT(((val * 958) / 10000) + 3, 0, 255);
230 vt8231_write_value(data, regvoltmin[nr], data->in_min[nr]);
231 mutex_unlock(&data->update_lock);
232 return count;
233 }
234
235 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
236 const char *buf, size_t count)
237 {
238 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
239 int nr = sensor_attr->index;
240 struct vt8231_data *data = dev_get_drvdata(dev);
241 unsigned long val = simple_strtoul(buf, NULL, 10);
242
243 mutex_lock(&data->update_lock);
244 data->in_max[nr] = SENSORS_LIMIT(((val * 958) / 10000) + 3, 0, 255);
245 vt8231_write_value(data, regvoltmax[nr], data->in_max[nr]);
246 mutex_unlock(&data->update_lock);
247 return count;
248 }
249
250 /* Special case for input 5 as this has 3.3V scaling built into the chip */
251 static ssize_t show_in5(struct device *dev, struct device_attribute *attr,
252 char *buf)
253 {
254 struct vt8231_data *data = vt8231_update_device(dev);
255
256 return sprintf(buf, "%d\n",
257 (((data->in[5] - 3) * 10000 * 54) / (958 * 34)));
258 }
259
260 static ssize_t show_in5_min(struct device *dev, struct device_attribute *attr,
261 char *buf)
262 {
263 struct vt8231_data *data = vt8231_update_device(dev);
264
265 return sprintf(buf, "%d\n",
266 (((data->in_min[5] - 3) * 10000 * 54) / (958 * 34)));
267 }
268
269 static ssize_t show_in5_max(struct device *dev, struct device_attribute *attr,
270 char *buf)
271 {
272 struct vt8231_data *data = vt8231_update_device(dev);
273
274 return sprintf(buf, "%d\n",
275 (((data->in_max[5] - 3) * 10000 * 54) / (958 * 34)));
276 }
277
278 static ssize_t set_in5_min(struct device *dev, struct device_attribute *attr,
279 const char *buf, size_t count)
280 {
281 struct vt8231_data *data = dev_get_drvdata(dev);
282 unsigned long val = simple_strtoul(buf, NULL, 10);
283
284 mutex_lock(&data->update_lock);
285 data->in_min[5] = SENSORS_LIMIT(((val * 958 * 34) / (10000 * 54)) + 3,
286 0, 255);
287 vt8231_write_value(data, regvoltmin[5], data->in_min[5]);
288 mutex_unlock(&data->update_lock);
289 return count;
290 }
291
292 static ssize_t set_in5_max(struct device *dev, struct device_attribute *attr,
293 const char *buf, size_t count)
294 {
295 struct vt8231_data *data = dev_get_drvdata(dev);
296 unsigned long val = simple_strtoul(buf, NULL, 10);
297
298 mutex_lock(&data->update_lock);
299 data->in_max[5] = SENSORS_LIMIT(((val * 958 * 34) / (10000 * 54)) + 3,
300 0, 255);
301 vt8231_write_value(data, regvoltmax[5], data->in_max[5]);
302 mutex_unlock(&data->update_lock);
303 return count;
304 }
305
306 #define define_voltage_sysfs(offset) \
307 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
308 show_in, NULL, offset); \
309 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
310 show_in_min, set_in_min, offset); \
311 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
312 show_in_max, set_in_max, offset)
313
314 define_voltage_sysfs(0);
315 define_voltage_sysfs(1);
316 define_voltage_sysfs(2);
317 define_voltage_sysfs(3);
318 define_voltage_sysfs(4);
319
320 static DEVICE_ATTR(in5_input, S_IRUGO, show_in5, NULL);
321 static DEVICE_ATTR(in5_min, S_IRUGO | S_IWUSR, show_in5_min, set_in5_min);
322 static DEVICE_ATTR(in5_max, S_IRUGO | S_IWUSR, show_in5_max, set_in5_max);
323
324 /* Temperatures */
325 static ssize_t show_temp0(struct device *dev, struct device_attribute *attr,
326 char *buf)
327 {
328 struct vt8231_data *data = vt8231_update_device(dev);
329 return sprintf(buf, "%d\n", data->temp[0] * 250);
330 }
331
332 static ssize_t show_temp0_max(struct device *dev, struct device_attribute *attr,
333 char *buf)
334 {
335 struct vt8231_data *data = vt8231_update_device(dev);
336 return sprintf(buf, "%d\n", data->temp_max[0] * 1000);
337 }
338
339 static ssize_t show_temp0_min(struct device *dev, struct device_attribute *attr,
340 char *buf)
341 {
342 struct vt8231_data *data = vt8231_update_device(dev);
343 return sprintf(buf, "%d\n", data->temp_min[0] * 1000);
344 }
345
346 static ssize_t set_temp0_max(struct device *dev, struct device_attribute *attr,
347 const char *buf, size_t count)
348 {
349 struct vt8231_data *data = dev_get_drvdata(dev);
350 int val = simple_strtol(buf, NULL, 10);
351
352 mutex_lock(&data->update_lock);
353 data->temp_max[0] = SENSORS_LIMIT((val + 500) / 1000, 0, 255);
354 vt8231_write_value(data, regtempmax[0], data->temp_max[0]);
355 mutex_unlock(&data->update_lock);
356 return count;
357 }
358 static ssize_t set_temp0_min(struct device *dev, struct device_attribute *attr,
359 const char *buf, size_t count)
360 {
361 struct vt8231_data *data = dev_get_drvdata(dev);
362 int val = simple_strtol(buf, NULL, 10);
363
364 mutex_lock(&data->update_lock);
365 data->temp_min[0] = SENSORS_LIMIT((val + 500) / 1000, 0, 255);
366 vt8231_write_value(data, regtempmin[0], data->temp_min[0]);
367 mutex_unlock(&data->update_lock);
368 return count;
369 }
370
371 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
372 char *buf)
373 {
374 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
375 int nr = sensor_attr->index;
376 struct vt8231_data *data = vt8231_update_device(dev);
377 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
378 }
379
380 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
381 char *buf)
382 {
383 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
384 int nr = sensor_attr->index;
385 struct vt8231_data *data = vt8231_update_device(dev);
386 return sprintf(buf, "%d\n", TEMP_MAXMIN_FROM_REG(data->temp_max[nr]));
387 }
388
389 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
390 char *buf)
391 {
392 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
393 int nr = sensor_attr->index;
394 struct vt8231_data *data = vt8231_update_device(dev);
395 return sprintf(buf, "%d\n", TEMP_MAXMIN_FROM_REG(data->temp_min[nr]));
396 }
397
398 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
399 const char *buf, size_t count)
400 {
401 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
402 int nr = sensor_attr->index;
403 struct vt8231_data *data = dev_get_drvdata(dev);
404 int val = simple_strtol(buf, NULL, 10);
405
406 mutex_lock(&data->update_lock);
407 data->temp_max[nr] = SENSORS_LIMIT(TEMP_MAXMIN_TO_REG(val), 0, 255);
408 vt8231_write_value(data, regtempmax[nr], data->temp_max[nr]);
409 mutex_unlock(&data->update_lock);
410 return count;
411 }
412 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
413 const char *buf, size_t count)
414 {
415 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
416 int nr = sensor_attr->index;
417 struct vt8231_data *data = dev_get_drvdata(dev);
418 int val = simple_strtol(buf, NULL, 10);
419
420 mutex_lock(&data->update_lock);
421 data->temp_min[nr] = SENSORS_LIMIT(TEMP_MAXMIN_TO_REG(val), 0, 255);
422 vt8231_write_value(data, regtempmin[nr], data->temp_min[nr]);
423 mutex_unlock(&data->update_lock);
424 return count;
425 }
426
427 /* Note that these map the Linux temperature sensor numbering (1-6) to the VIA
428 ** temperature sensor numbering (0-5)
429 */
430 #define define_temperature_sysfs(offset) \
431 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
432 show_temp, NULL, offset - 1); \
433 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
434 show_temp_max, set_temp_max, offset - 1); \
435 static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \
436 show_temp_min, set_temp_min, offset - 1)
437
438 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp0, NULL);
439 static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp0_max, set_temp0_max);
440 static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp0_min, set_temp0_min);
441
442 define_temperature_sysfs(2);
443 define_temperature_sysfs(3);
444 define_temperature_sysfs(4);
445 define_temperature_sysfs(5);
446 define_temperature_sysfs(6);
447
448 /* Fans */
449 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
450 char *buf)
451 {
452 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
453 int nr = sensor_attr->index;
454 struct vt8231_data *data = vt8231_update_device(dev);
455 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
456 DIV_FROM_REG(data->fan_div[nr])));
457 }
458
459 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
460 char *buf)
461 {
462 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
463 int nr = sensor_attr->index;
464 struct vt8231_data *data = vt8231_update_device(dev);
465 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
466 DIV_FROM_REG(data->fan_div[nr])));
467 }
468
469 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
470 char *buf)
471 {
472 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
473 int nr = sensor_attr->index;
474 struct vt8231_data *data = vt8231_update_device(dev);
475 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
476 }
477
478 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
479 const char *buf, size_t count)
480 {
481 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
482 int nr = sensor_attr->index;
483 struct vt8231_data *data = dev_get_drvdata(dev);
484 int val = simple_strtoul(buf, NULL, 10);
485
486 mutex_lock(&data->update_lock);
487 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
488 vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), data->fan_min[nr]);
489 mutex_unlock(&data->update_lock);
490 return count;
491 }
492
493 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
494 const char *buf, size_t count)
495 {
496 struct vt8231_data *data = dev_get_drvdata(dev);
497 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
498 unsigned long val = simple_strtoul(buf, NULL, 10);
499 int nr = sensor_attr->index;
500 int old = vt8231_read_value(data, VT8231_REG_FANDIV);
501 long min = FAN_FROM_REG(data->fan_min[nr],
502 DIV_FROM_REG(data->fan_div[nr]));
503
504 mutex_lock(&data->update_lock);
505 switch (val) {
506 case 1: data->fan_div[nr] = 0; break;
507 case 2: data->fan_div[nr] = 1; break;
508 case 4: data->fan_div[nr] = 2; break;
509 case 8: data->fan_div[nr] = 3; break;
510 default:
511 dev_err(dev, "fan_div value %ld not supported. "
512 "Choose one of 1, 2, 4 or 8!\n", val);
513 mutex_unlock(&data->update_lock);
514 return -EINVAL;
515 }
516
517 /* Correct the fan minimum speed */
518 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
519 vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), data->fan_min[nr]);
520
521 old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4);
522 vt8231_write_value(data, VT8231_REG_FANDIV, old);
523 mutex_unlock(&data->update_lock);
524 return count;
525 }
526
527
528 #define define_fan_sysfs(offset) \
529 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
530 show_fan, NULL, offset - 1); \
531 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
532 show_fan_div, set_fan_div, offset - 1); \
533 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
534 show_fan_min, set_fan_min, offset - 1)
535
536 define_fan_sysfs(1);
537 define_fan_sysfs(2);
538
539 /* Alarms */
540 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
541 char *buf)
542 {
543 struct vt8231_data *data = vt8231_update_device(dev);
544 return sprintf(buf, "%d\n", data->alarms);
545 }
546 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
547
548 <<<<<<< HEAD:drivers/hwmon/vt8231.c
549 =======
550 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
551 char *buf)
552 {
553 int bitnr = to_sensor_dev_attr(attr)->index;
554 struct vt8231_data *data = vt8231_update_device(dev);
555 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
556 }
557 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
558 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 11);
559 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 0);
560 static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL, 1);
561 static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL, 3);
562 static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL, 8);
563 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 11);
564 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 0);
565 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 1);
566 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
567 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
568 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 2);
569 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
570 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
571
572 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
573 static ssize_t show_name(struct device *dev, struct device_attribute
574 *devattr, char *buf)
575 {
576 struct vt8231_data *data = dev_get_drvdata(dev);
577 return sprintf(buf, "%s\n", data->name);
578 }
579 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
580
581 <<<<<<< HEAD:drivers/hwmon/vt8231.c
582 static struct attribute *vt8231_attributes_temps[6][4] = {
583 =======
584 static struct attribute *vt8231_attributes_temps[6][5] = {
585 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
586 {
587 &dev_attr_temp1_input.attr,
588 &dev_attr_temp1_max_hyst.attr,
589 &dev_attr_temp1_max.attr,
590 <<<<<<< HEAD:drivers/hwmon/vt8231.c
591 =======
592 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
593 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
594 NULL
595 }, {
596 &sensor_dev_attr_temp2_input.dev_attr.attr,
597 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
598 &sensor_dev_attr_temp2_max.dev_attr.attr,
599 <<<<<<< HEAD:drivers/hwmon/vt8231.c
600 =======
601 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
602 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
603 NULL
604 }, {
605 &sensor_dev_attr_temp3_input.dev_attr.attr,
606 &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
607 &sensor_dev_attr_temp3_max.dev_attr.attr,
608 <<<<<<< HEAD:drivers/hwmon/vt8231.c
609 =======
610 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
611 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
612 NULL
613 }, {
614 &sensor_dev_attr_temp4_input.dev_attr.attr,
615 &sensor_dev_attr_temp4_max_hyst.dev_attr.attr,
616 &sensor_dev_attr_temp4_max.dev_attr.attr,
617 <<<<<<< HEAD:drivers/hwmon/vt8231.c
618 =======
619 &sensor_dev_attr_temp4_alarm.dev_attr.attr,
620 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
621 NULL
622 }, {
623 &sensor_dev_attr_temp5_input.dev_attr.attr,
624 &sensor_dev_attr_temp5_max_hyst.dev_attr.attr,
625 &sensor_dev_attr_temp5_max.dev_attr.attr,
626 <<<<<<< HEAD:drivers/hwmon/vt8231.c
627 =======
628 &sensor_dev_attr_temp5_alarm.dev_attr.attr,
629 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
630 NULL
631 }, {
632 &sensor_dev_attr_temp6_input.dev_attr.attr,
633 &sensor_dev_attr_temp6_max_hyst.dev_attr.attr,
634 &sensor_dev_attr_temp6_max.dev_attr.attr,
635 <<<<<<< HEAD:drivers/hwmon/vt8231.c
636 =======
637 &sensor_dev_attr_temp6_alarm.dev_attr.attr,
638 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
639 NULL
640 }
641 };
642
643 static const struct attribute_group vt8231_group_temps[6] = {
644 { .attrs = vt8231_attributes_temps[0] },
645 { .attrs = vt8231_attributes_temps[1] },
646 { .attrs = vt8231_attributes_temps[2] },
647 { .attrs = vt8231_attributes_temps[3] },
648 { .attrs = vt8231_attributes_temps[4] },
649 { .attrs = vt8231_attributes_temps[5] },
650 };
651
652 <<<<<<< HEAD:drivers/hwmon/vt8231.c
653 static struct attribute *vt8231_attributes_volts[6][4] = {
654 =======
655 static struct attribute *vt8231_attributes_volts[6][5] = {
656 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
657 {
658 &sensor_dev_attr_in0_input.dev_attr.attr,
659 &sensor_dev_attr_in0_min.dev_attr.attr,
660 &sensor_dev_attr_in0_max.dev_attr.attr,
661 <<<<<<< HEAD:drivers/hwmon/vt8231.c
662 =======
663 &sensor_dev_attr_in0_alarm.dev_attr.attr,
664 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
665 NULL
666 }, {
667 &sensor_dev_attr_in1_input.dev_attr.attr,
668 &sensor_dev_attr_in1_min.dev_attr.attr,
669 &sensor_dev_attr_in1_max.dev_attr.attr,
670 <<<<<<< HEAD:drivers/hwmon/vt8231.c
671 =======
672 &sensor_dev_attr_in1_alarm.dev_attr.attr,
673 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
674 NULL
675 }, {
676 &sensor_dev_attr_in2_input.dev_attr.attr,
677 &sensor_dev_attr_in2_min.dev_attr.attr,
678 &sensor_dev_attr_in2_max.dev_attr.attr,
679 <<<<<<< HEAD:drivers/hwmon/vt8231.c
680 =======
681 &sensor_dev_attr_in2_alarm.dev_attr.attr,
682 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
683 NULL
684 }, {
685 &sensor_dev_attr_in3_input.dev_attr.attr,
686 &sensor_dev_attr_in3_min.dev_attr.attr,
687 &sensor_dev_attr_in3_max.dev_attr.attr,
688 <<<<<<< HEAD:drivers/hwmon/vt8231.c
689 =======
690 &sensor_dev_attr_in3_alarm.dev_attr.attr,
691 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
692 NULL
693 }, {
694 &sensor_dev_attr_in4_input.dev_attr.attr,
695 &sensor_dev_attr_in4_min.dev_attr.attr,
696 &sensor_dev_attr_in4_max.dev_attr.attr,
697 <<<<<<< HEAD:drivers/hwmon/vt8231.c
698 =======
699 &sensor_dev_attr_in4_alarm.dev_attr.attr,
700 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
701 NULL
702 }, {
703 &dev_attr_in5_input.attr,
704 &dev_attr_in5_min.attr,
705 &dev_attr_in5_max.attr,
706 <<<<<<< HEAD:drivers/hwmon/vt8231.c
707 =======
708 &sensor_dev_attr_in5_alarm.dev_attr.attr,
709 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
710 NULL
711 }
712 };
713
714 static const struct attribute_group vt8231_group_volts[6] = {
715 { .attrs = vt8231_attributes_volts[0] },
716 { .attrs = vt8231_attributes_volts[1] },
717 { .attrs = vt8231_attributes_volts[2] },
718 { .attrs = vt8231_attributes_volts[3] },
719 { .attrs = vt8231_attributes_volts[4] },
720 { .attrs = vt8231_attributes_volts[5] },
721 };
722
723 static struct attribute *vt8231_attributes[] = {
724 &sensor_dev_attr_fan1_input.dev_attr.attr,
725 &sensor_dev_attr_fan2_input.dev_attr.attr,
726 &sensor_dev_attr_fan1_min.dev_attr.attr,
727 &sensor_dev_attr_fan2_min.dev_attr.attr,
728 &sensor_dev_attr_fan1_div.dev_attr.attr,
729 &sensor_dev_attr_fan2_div.dev_attr.attr,
730 <<<<<<< HEAD:drivers/hwmon/vt8231.c
731 =======
732 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
733 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
734 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
735 &dev_attr_alarms.attr,
736 &dev_attr_name.attr,
737 NULL
738 };
739
740 static const struct attribute_group vt8231_group = {
741 .attrs = vt8231_attributes,
742 };
743
744 static struct platform_driver vt8231_driver = {
745 .driver = {
746 .owner = THIS_MODULE,
747 .name = "vt8231",
748 },
749 .probe = vt8231_probe,
750 .remove = __devexit_p(vt8231_remove),
751 };
752
753 static struct pci_device_id vt8231_pci_ids[] = {
754 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231_4) },
755 { 0, }
756 };
757
758 MODULE_DEVICE_TABLE(pci, vt8231_pci_ids);
759
760 static int __devinit vt8231_pci_probe(struct pci_dev *dev,
761 const struct pci_device_id *id);
762
763 static struct pci_driver vt8231_pci_driver = {
764 .name = "vt8231",
765 .id_table = vt8231_pci_ids,
766 .probe = vt8231_pci_probe,
767 };
768
769 static int vt8231_probe(struct platform_device *pdev)
770 {
771 struct resource *res;
772 struct vt8231_data *data;
773 int err = 0, i;
774
775 /* Reserve the ISA region */
776 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
777 if (!request_region(res->start, VT8231_EXTENT,
778 vt8231_driver.driver.name)) {
779 dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use!\n",
780 (unsigned long)res->start, (unsigned long)res->end);
781 return -ENODEV;
782 }
783
784 if (!(data = kzalloc(sizeof(struct vt8231_data), GFP_KERNEL))) {
785 err = -ENOMEM;
786 goto exit_release;
787 }
788
789 platform_set_drvdata(pdev, data);
790 data->addr = res->start;
791 data->name = "vt8231";
792
793 mutex_init(&data->update_lock);
794 vt8231_init_device(data);
795
796 /* Register sysfs hooks */
797 if ((err = sysfs_create_group(&pdev->dev.kobj, &vt8231_group)))
798 goto exit_free;
799
800 /* Must update device information to find out the config field */
801 data->uch_config = vt8231_read_value(data, VT8231_REG_UCH_CONFIG);
802
803 for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) {
804 if (ISTEMP(i, data->uch_config)) {
805 if ((err = sysfs_create_group(&pdev->dev.kobj,
806 &vt8231_group_temps[i])))
807 goto exit_remove_files;
808 }
809 }
810
811 for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) {
812 if (ISVOLT(i, data->uch_config)) {
813 if ((err = sysfs_create_group(&pdev->dev.kobj,
814 &vt8231_group_volts[i])))
815 goto exit_remove_files;
816 }
817 }
818
819 data->hwmon_dev = hwmon_device_register(&pdev->dev);
820 if (IS_ERR(data->hwmon_dev)) {
821 err = PTR_ERR(data->hwmon_dev);
822 goto exit_remove_files;
823 }
824 return 0;
825
826 exit_remove_files:
827 for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++)
828 sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_volts[i]);
829
830 for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++)
831 sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]);
832
833 sysfs_remove_group(&pdev->dev.kobj, &vt8231_group);
834
835 exit_free:
836 platform_set_drvdata(pdev, NULL);
837 kfree(data);
838
839 exit_release:
840 release_region(res->start, VT8231_EXTENT);
841 return err;
842 }
843
844 static int __devexit vt8231_remove(struct platform_device *pdev)
845 {
846 struct vt8231_data *data = platform_get_drvdata(pdev);
847 int i;
848
849 hwmon_device_unregister(data->hwmon_dev);
850
851 for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++)
852 sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_volts[i]);
853
854 for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++)
855 sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]);
856
857 sysfs_remove_group(&pdev->dev.kobj, &vt8231_group);
858
859 release_region(data->addr, VT8231_EXTENT);
860 platform_set_drvdata(pdev, NULL);
861 kfree(data);
862 return 0;
863 }
864
865 static void vt8231_init_device(struct vt8231_data *data)
866 {
867 vt8231_write_value(data, VT8231_REG_TEMP1_CONFIG, 0);
868 vt8231_write_value(data, VT8231_REG_TEMP2_CONFIG, 0);
869 }
870
871 static struct vt8231_data *vt8231_update_device(struct device *dev)
872 {
873 struct vt8231_data *data = dev_get_drvdata(dev);
874 int i;
875 u16 low;
876
877 mutex_lock(&data->update_lock);
878
879 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
880 || !data->valid) {
881 for (i = 0; i < 6; i++) {
882 if (ISVOLT(i, data->uch_config)) {
883 data->in[i] = vt8231_read_value(data,
884 regvolt[i]);
885 data->in_min[i] = vt8231_read_value(data,
886 regvoltmin[i]);
887 data->in_max[i] = vt8231_read_value(data,
888 regvoltmax[i]);
889 }
890 }
891 for (i = 0; i < 2; i++) {
892 data->fan[i] = vt8231_read_value(data,
893 VT8231_REG_FAN(i));
894 data->fan_min[i] = vt8231_read_value(data,
895 VT8231_REG_FAN_MIN(i));
896 }
897
898 low = vt8231_read_value(data, VT8231_REG_TEMP_LOW01);
899 low = (low >> 6) | ((low & 0x30) >> 2)
900 | (vt8231_read_value(data, VT8231_REG_TEMP_LOW25) << 4);
901 for (i = 0; i < 6; i++) {
902 if (ISTEMP(i, data->uch_config)) {
903 data->temp[i] = (vt8231_read_value(data,
904 regtemp[i]) << 2)
905 | ((low >> (2 * i)) & 0x03);
906 data->temp_max[i] = vt8231_read_value(data,
907 regtempmax[i]);
908 data->temp_min[i] = vt8231_read_value(data,
909 regtempmin[i]);
910 }
911 }
912
913 i = vt8231_read_value(data, VT8231_REG_FANDIV);
914 data->fan_div[0] = (i >> 4) & 0x03;
915 data->fan_div[1] = i >> 6;
916 data->alarms = vt8231_read_value(data, VT8231_REG_ALARM1) |
917 (vt8231_read_value(data, VT8231_REG_ALARM2) << 8);
918
919 /* Set alarm flags correctly */
920 if (!data->fan[0] && data->fan_min[0]) {
921 data->alarms |= 0x40;
922 } else if (data->fan[0] && !data->fan_min[0]) {
923 data->alarms &= ~0x40;
924 }
925
926 if (!data->fan[1] && data->fan_min[1]) {
927 data->alarms |= 0x80;
928 } else if (data->fan[1] && !data->fan_min[1]) {
929 data->alarms &= ~0x80;
930 }
931
932 data->last_updated = jiffies;
933 data->valid = 1;
934 }
935
936 mutex_unlock(&data->update_lock);
937
938 return data;
939 }
940
941 static int __devinit vt8231_device_add(unsigned short address)
942 {
943 struct resource res = {
944 .start = address,
945 .end = address + VT8231_EXTENT - 1,
946 .name = "vt8231",
947 .flags = IORESOURCE_IO,
948 };
949 int err;
950
951 pdev = platform_device_alloc("vt8231", address);
952 if (!pdev) {
953 err = -ENOMEM;
954 printk(KERN_ERR "vt8231: Device allocation failed\n");
955 goto exit;
956 }
957
958 err = platform_device_add_resources(pdev, &res, 1);
959 if (err) {
960 printk(KERN_ERR "vt8231: Device resource addition failed "
961 "(%d)\n", err);
962 goto exit_device_put;
963 }
964
965 err = platform_device_add(pdev);
966 if (err) {
967 printk(KERN_ERR "vt8231: Device addition failed (%d)\n",
968 err);
969 goto exit_device_put;
970 }
971
972 return 0;
973
974 exit_device_put:
975 platform_device_put(pdev);
976 exit:
977 return err;
978 }
979
980 static int __devinit vt8231_pci_probe(struct pci_dev *dev,
981 const struct pci_device_id *id)
982 {
983 u16 address, val;
984 if (force_addr) {
985 address = force_addr & 0xff00;
986 dev_warn(&dev->dev, "Forcing ISA address 0x%x\n",
987 address);
988
989 if (PCIBIOS_SUCCESSFUL !=
990 pci_write_config_word(dev, VT8231_BASE_REG, address | 1))
991 return -ENODEV;
992 }
993
994 if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, VT8231_BASE_REG,
995 &val))
996 return -ENODEV;
997
998 address = val & ~(VT8231_EXTENT - 1);
999 if (address == 0) {
1000 dev_err(&dev->dev, "base address not set -\
1001 upgrade BIOS or use force_addr=0xaddr\n");
1002 return -ENODEV;
1003 }
1004
1005 if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, VT8231_ENABLE_REG,
1006 &val))
1007 return -ENODEV;
1008
1009 if (!(val & 0x0001)) {
1010 dev_warn(&dev->dev, "enabling sensors\n");
1011 if (PCIBIOS_SUCCESSFUL !=
1012 pci_write_config_word(dev, VT8231_ENABLE_REG,
1013 val | 0x0001))
1014 return -ENODEV;
1015 }
1016
1017 if (platform_driver_register(&vt8231_driver))
1018 goto exit;
1019
1020 /* Sets global pdev as a side effect */
1021 if (vt8231_device_add(address))
1022 goto exit_unregister;
1023
1024 /* Always return failure here. This is to allow other drivers to bind
1025 * to this pci device. We don't really want to have control over the
1026 * pci device, we only wanted to read as few register values from it.
1027 */
1028
1029 /* We do, however, mark ourselves as using the PCI device to stop it
1030 getting unloaded. */
1031 s_bridge = pci_dev_get(dev);
1032 return -ENODEV;
1033
1034 exit_unregister:
1035 platform_driver_unregister(&vt8231_driver);
1036 exit:
1037 return -ENODEV;
1038 }
1039
1040 static int __init sm_vt8231_init(void)
1041 {
1042 return pci_register_driver(&vt8231_pci_driver);
1043 }
1044
1045 static void __exit sm_vt8231_exit(void)
1046 {
1047 pci_unregister_driver(&vt8231_pci_driver);
1048 if (s_bridge != NULL) {
1049 platform_device_unregister(pdev);
1050 platform_driver_unregister(&vt8231_driver);
1051 pci_dev_put(s_bridge);
1052 s_bridge = NULL;
1053 }
1054 }
1055
1056 <<<<<<< HEAD:drivers/hwmon/vt8231.c
1057 MODULE_AUTHOR("Roger Lucas <roger@planbit.co.uk>");
1058 =======
1059 MODULE_AUTHOR("Roger Lucas <vt8231@hiddenengine.co.uk>");
1060 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/hwmon/vt8231.c
1061 MODULE_DESCRIPTION("VT8231 sensors");
1062 MODULE_LICENSE("GPL");
1063
1064 module_init(sm_vt8231_init);
1065 module_exit(sm_vt8231_exit);
WRT350N Kernel Patches