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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / hwmon / w83781d.c
blob32d4adee73db650fc5ba2b2cc42586b12b642cd3
1 /*
2 w83781d.c - Part of lm_sensors, Linux kernel modules for hardware
3 monitoring
4 Copyright (c) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>,
5 Philip Edelbrock <phil@netroedge.com>,
6 and Mark Studebaker <mdsxyz123@yahoo.com>
7 Copyright (c) 2007 - 2008 Jean Delvare <khali@linux-fr.org>
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
24 /*
25 Supports following chips:
26
27 Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
28 as99127f 7 3 0 3 0x31 0x12c3 yes no
29 as99127f rev.2 (type_name = as99127f) 0x31 0x5ca3 yes no
30 w83781d 7 3 0 3 0x10-1 0x5ca3 yes yes
31 w83782d 9 3 2-4 3 0x30 0x5ca3 yes yes
32 w83783s 5-6 3 2 1-2 0x40 0x5ca3 yes no
33
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/i2c.h>
41 #include <linux/hwmon.h>
42 #include <linux/hwmon-vid.h>
43 #include <linux/hwmon-sysfs.h>
44 #include <linux/sysfs.h>
45 #include <linux/err.h>
46 #include <linux/mutex.h>
47
48 #ifdef CONFIG_ISA
49 #include <linux/platform_device.h>
50 #include <linux/ioport.h>
51 #include <linux/io.h>
52 #endif
53
54 #include "lm75.h"
55
56 /* Addresses to scan */
57 static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
58 0x2e, 0x2f, I2C_CLIENT_END };
59
60 enum chips { w83781d, w83782d, w83783s, as99127f };
61
62 /* Insmod parameters */
63 static unsigned short force_subclients[4];
64 module_param_array(force_subclients, short, NULL, 0);
65 MODULE_PARM_DESC(force_subclients, "List of subclient addresses: "
66 "{bus, clientaddr, subclientaddr1, subclientaddr2}");
67
68 static int reset;
69 module_param(reset, bool, 0);
70 MODULE_PARM_DESC(reset, "Set to one to reset chip on load");
71
72 static int init = 1;
73 module_param(init, bool, 0);
74 MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization");
75
76 /* Constants specified below */
77
78 /* Length of ISA address segment */
79 #define W83781D_EXTENT 8
80
81 /* Where are the ISA address/data registers relative to the base address */
82 #define W83781D_ADDR_REG_OFFSET 5
83 #define W83781D_DATA_REG_OFFSET 6
84
85 /* The device registers */
86 /* in nr from 0 to 8 */
87 #define W83781D_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
88 (0x554 + (((nr) - 7) * 2)))
89 #define W83781D_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
90 (0x555 + (((nr) - 7) * 2)))
91 #define W83781D_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
92 (0x550 + (nr) - 7))
93
94 /* fan nr from 0 to 2 */
95 #define W83781D_REG_FAN_MIN(nr) (0x3b + (nr))
96 #define W83781D_REG_FAN(nr) (0x28 + (nr))
97
98 #define W83781D_REG_BANK 0x4E
99 #define W83781D_REG_TEMP2_CONFIG 0x152
100 #define W83781D_REG_TEMP3_CONFIG 0x252
101 /* temp nr from 1 to 3 */
102 #define W83781D_REG_TEMP(nr) ((nr == 3) ? (0x0250) : \
103 ((nr == 2) ? (0x0150) : \
104 (0x27)))
105 #define W83781D_REG_TEMP_HYST(nr) ((nr == 3) ? (0x253) : \
106 ((nr == 2) ? (0x153) : \
107 (0x3A)))
108 #define W83781D_REG_TEMP_OVER(nr) ((nr == 3) ? (0x255) : \
109 ((nr == 2) ? (0x155) : \
110 (0x39)))
111
112 #define W83781D_REG_CONFIG 0x40
113
114 /* Interrupt status (W83781D, AS99127F) */
115 #define W83781D_REG_ALARM1 0x41
116 #define W83781D_REG_ALARM2 0x42
117
118 /* Real-time status (W83782D, W83783S) */
119 #define W83782D_REG_ALARM1 0x459
120 #define W83782D_REG_ALARM2 0x45A
121 #define W83782D_REG_ALARM3 0x45B
122
123 #define W83781D_REG_BEEP_CONFIG 0x4D
124 #define W83781D_REG_BEEP_INTS1 0x56
125 #define W83781D_REG_BEEP_INTS2 0x57
126 #define W83781D_REG_BEEP_INTS3 0x453 /* not on W83781D */
127
128 #define W83781D_REG_VID_FANDIV 0x47
129
130 #define W83781D_REG_CHIPID 0x49
131 #define W83781D_REG_WCHIPID 0x58
132 #define W83781D_REG_CHIPMAN 0x4F
133 #define W83781D_REG_PIN 0x4B
134
135 /* 782D/783S only */
136 #define W83781D_REG_VBAT 0x5D
137
138 /* PWM 782D (1-4) and 783S (1-2) only */
139 static const u8 W83781D_REG_PWM[] = { 0x5B, 0x5A, 0x5E, 0x5F };
140 #define W83781D_REG_PWMCLK12 0x5C
141 #define W83781D_REG_PWMCLK34 0x45C
142
143 #define W83781D_REG_I2C_ADDR 0x48
144 #define W83781D_REG_I2C_SUBADDR 0x4A
145
146 /* The following are undocumented in the data sheets however we
147 received the information in an email from Winbond tech support */
148 /* Sensor selection - not on 781d */
149 #define W83781D_REG_SCFG1 0x5D
150 static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 };
151
152 #define W83781D_REG_SCFG2 0x59
153 static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 };
154
155 #define W83781D_DEFAULT_BETA 3435
156
157 /* Conversions */
158 #define IN_TO_REG(val) SENSORS_LIMIT(((val) + 8) / 16, 0, 255)
159 #define IN_FROM_REG(val) ((val) * 16)
160
161 static inline u8
162 FAN_TO_REG(long rpm, int div)
163 {
164 if (rpm == 0)
165 return 255;
166 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
167 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
168 }
169
170 static inline long
171 FAN_FROM_REG(u8 val, int div)
172 {
173 if (val == 0)
174 return -1;
175 if (val == 255)
176 return 0;
177 return 1350000 / (val * div);
178 }
179
180 #define TEMP_TO_REG(val) SENSORS_LIMIT((val) / 1000, -127, 128)
181 #define TEMP_FROM_REG(val) ((val) * 1000)
182
183 #define BEEP_MASK_FROM_REG(val,type) ((type) == as99127f ? \
184 (~(val)) & 0x7fff : (val) & 0xff7fff)
185 #define BEEP_MASK_TO_REG(val,type) ((type) == as99127f ? \
186 (~(val)) & 0x7fff : (val) & 0xff7fff)
187
188 #define DIV_FROM_REG(val) (1 << (val))
189
190 static inline u8
191 DIV_TO_REG(long val, enum chips type)
192 {
193 int i;
194 val = SENSORS_LIMIT(val, 1,
195 ((type == w83781d
196 || type == as99127f) ? 8 : 128)) >> 1;
197 for (i = 0; i < 7; i++) {
198 if (val == 0)
199 break;
200 val >>= 1;
201 }
202 return i;
203 }
204
205 struct w83781d_data {
206 struct i2c_client *client;
207 struct device *hwmon_dev;
208 struct mutex lock;
209 enum chips type;
210
211 /* For ISA device only */
212 const char *name;
213 int isa_addr;
214
215 struct mutex update_lock;
216 char valid; /* !=0 if following fields are valid */
217 unsigned long last_updated; /* In jiffies */
218
219 struct i2c_client *lm75[2]; /* for secondary I2C addresses */
220 /* array of 2 pointers to subclients */
221
222 u8 in[9]; /* Register value - 8 & 9 for 782D only */
223 u8 in_max[9]; /* Register value - 8 & 9 for 782D only */
224 u8 in_min[9]; /* Register value - 8 & 9 for 782D only */
225 u8 fan[3]; /* Register value */
226 u8 fan_min[3]; /* Register value */
227 s8 temp; /* Register value */
228 s8 temp_max; /* Register value */
229 s8 temp_max_hyst; /* Register value */
230 u16 temp_add[2]; /* Register value */
231 u16 temp_max_add[2]; /* Register value */
232 u16 temp_max_hyst_add[2]; /* Register value */
233 u8 fan_div[3]; /* Register encoding, shifted right */
234 u8 vid; /* Register encoding, combined */
235 u32 alarms; /* Register encoding, combined */
236 u32 beep_mask; /* Register encoding, combined */
237 u8 pwm[4]; /* Register value */
238 u8 pwm2_enable; /* Boolean */
239 u16 sens[3]; /* 782D/783S only.
240 1 = pentium diode; 2 = 3904 diode;
241 4 = thermistor */
242 u8 vrm;
243 };
244
245 static struct w83781d_data *w83781d_data_if_isa(void);
246 static int w83781d_alias_detect(struct i2c_client *client, u8 chipid);
247
248 static int w83781d_read_value(struct w83781d_data *data, u16 reg);
249 static int w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value);
250 static struct w83781d_data *w83781d_update_device(struct device *dev);
251 static void w83781d_init_device(struct device *dev);
252
253 /* following are the sysfs callback functions */
254 #define show_in_reg(reg) \
255 static ssize_t show_##reg (struct device *dev, struct device_attribute *da, \
256 char *buf) \
257 { \
258 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
259 struct w83781d_data *data = w83781d_update_device(dev); \
260 return sprintf(buf, "%ld\n", \
261 (long)IN_FROM_REG(data->reg[attr->index])); \
262 }
263 show_in_reg(in);
264 show_in_reg(in_min);
265 show_in_reg(in_max);
266
267 #define store_in_reg(REG, reg) \
268 static ssize_t store_in_##reg (struct device *dev, struct device_attribute \
269 *da, const char *buf, size_t count) \
270 { \
271 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
272 struct w83781d_data *data = dev_get_drvdata(dev); \
273 int nr = attr->index; \
274 u32 val; \
275 \
276 val = simple_strtoul(buf, NULL, 10); \
277 \
278 mutex_lock(&data->update_lock); \
279 data->in_##reg[nr] = IN_TO_REG(val); \
280 w83781d_write_value(data, W83781D_REG_IN_##REG(nr), data->in_##reg[nr]); \
281 \
282 mutex_unlock(&data->update_lock); \
283 return count; \
284 }
285 store_in_reg(MIN, min);
286 store_in_reg(MAX, max);
287
288 #define sysfs_in_offsets(offset) \
289 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
290 show_in, NULL, offset); \
291 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
292 show_in_min, store_in_min, offset); \
293 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
294 show_in_max, store_in_max, offset)
295
296 sysfs_in_offsets(0);
297 sysfs_in_offsets(1);
298 sysfs_in_offsets(2);
299 sysfs_in_offsets(3);
300 sysfs_in_offsets(4);
301 sysfs_in_offsets(5);
302 sysfs_in_offsets(6);
303 sysfs_in_offsets(7);
304 sysfs_in_offsets(8);
305
306 #define show_fan_reg(reg) \
307 static ssize_t show_##reg (struct device *dev, struct device_attribute *da, \
308 char *buf) \
309 { \
310 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
311 struct w83781d_data *data = w83781d_update_device(dev); \
312 return sprintf(buf,"%ld\n", \
313 FAN_FROM_REG(data->reg[attr->index], \
314 DIV_FROM_REG(data->fan_div[attr->index]))); \
315 }
316 show_fan_reg(fan);
317 show_fan_reg(fan_min);
318
319 static ssize_t
320 store_fan_min(struct device *dev, struct device_attribute *da,
321 const char *buf, size_t count)
322 {
323 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
324 struct w83781d_data *data = dev_get_drvdata(dev);
325 int nr = attr->index;
326 u32 val;
327
328 val = simple_strtoul(buf, NULL, 10);
329
330 mutex_lock(&data->update_lock);
331 data->fan_min[nr] =
332 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
333 w83781d_write_value(data, W83781D_REG_FAN_MIN(nr),
334 data->fan_min[nr]);
335
336 mutex_unlock(&data->update_lock);
337 return count;
338 }
339
340 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
341 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
342 show_fan_min, store_fan_min, 0);
343 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
344 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
345 show_fan_min, store_fan_min, 1);
346 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
347 static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO | S_IWUSR,
348 show_fan_min, store_fan_min, 2);
349
350 #define show_temp_reg(reg) \
351 static ssize_t show_##reg (struct device *dev, struct device_attribute *da, \
352 char *buf) \
353 { \
354 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
355 struct w83781d_data *data = w83781d_update_device(dev); \
356 int nr = attr->index; \
357 if (nr >= 2) { /* TEMP2 and TEMP3 */ \
358 return sprintf(buf,"%d\n", \
359 LM75_TEMP_FROM_REG(data->reg##_add[nr-2])); \
360 } else { /* TEMP1 */ \
361 return sprintf(buf,"%ld\n", (long)TEMP_FROM_REG(data->reg)); \
362 } \
363 }
364 show_temp_reg(temp);
365 show_temp_reg(temp_max);
366 show_temp_reg(temp_max_hyst);
367
368 #define store_temp_reg(REG, reg) \
369 static ssize_t store_temp_##reg (struct device *dev, \
370 struct device_attribute *da, const char *buf, size_t count) \
371 { \
372 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
373 struct w83781d_data *data = dev_get_drvdata(dev); \
374 int nr = attr->index; \
375 long val; \
376 \
377 val = simple_strtol(buf, NULL, 10); \
378 \
379 mutex_lock(&data->update_lock); \
380 \
381 if (nr >= 2) { /* TEMP2 and TEMP3 */ \
382 data->temp_##reg##_add[nr-2] = LM75_TEMP_TO_REG(val); \
383 w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \
384 data->temp_##reg##_add[nr-2]); \
385 } else { /* TEMP1 */ \
386 data->temp_##reg = TEMP_TO_REG(val); \
387 w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \
388 data->temp_##reg); \
389 } \
390 \
391 mutex_unlock(&data->update_lock); \
392 return count; \
393 }
394 store_temp_reg(OVER, max);
395 store_temp_reg(HYST, max_hyst);
396
397 #define sysfs_temp_offsets(offset) \
398 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
399 show_temp, NULL, offset); \
400 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
401 show_temp_max, store_temp_max, offset); \
402 static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \
403 show_temp_max_hyst, store_temp_max_hyst, offset);
404
405 sysfs_temp_offsets(1);
406 sysfs_temp_offsets(2);
407 sysfs_temp_offsets(3);
408
409 static ssize_t
410 show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
411 {
412 struct w83781d_data *data = w83781d_update_device(dev);
413 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
414 }
415
416 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
417
418 static ssize_t
419 show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
420 {
421 struct w83781d_data *data = dev_get_drvdata(dev);
422 return sprintf(buf, "%ld\n", (long) data->vrm);
423 }
424
425 static ssize_t
426 store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
427 {
428 struct w83781d_data *data = dev_get_drvdata(dev);
429 u32 val;
430
431 val = simple_strtoul(buf, NULL, 10);
432 data->vrm = val;
433
434 return count;
435 }
436
437 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
438
439 static ssize_t
440 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
441 {
442 struct w83781d_data *data = w83781d_update_device(dev);
443 return sprintf(buf, "%u\n", data->alarms);
444 }
445
446 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
447
448 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
449 char *buf)
450 {
451 struct w83781d_data *data = w83781d_update_device(dev);
452 int bitnr = to_sensor_dev_attr(attr)->index;
453 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
454 }
455
456 /* The W83781D has a single alarm bit for temp2 and temp3 */
457 static ssize_t show_temp3_alarm(struct device *dev,
458 struct device_attribute *attr, char *buf)
459 {
460 struct w83781d_data *data = w83781d_update_device(dev);
461 int bitnr = (data->type == w83781d) ? 5 : 13;
462 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
463 }
464
465 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
466 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
467 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
468 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
469 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
470 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9);
471 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10);
472 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16);
473 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17);
474 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
475 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
476 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11);
477 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
478 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
479 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_temp3_alarm, NULL, 0);
480
481 static ssize_t show_beep_mask (struct device *dev, struct device_attribute *attr, char *buf)
482 {
483 struct w83781d_data *data = w83781d_update_device(dev);
484 return sprintf(buf, "%ld\n",
485 (long)BEEP_MASK_FROM_REG(data->beep_mask, data->type));
486 }
487
488 static ssize_t
489 store_beep_mask(struct device *dev, struct device_attribute *attr,
490 const char *buf, size_t count)
491 {
492 struct w83781d_data *data = dev_get_drvdata(dev);
493 u32 val;
494
495 val = simple_strtoul(buf, NULL, 10);
496
497 mutex_lock(&data->update_lock);
498 data->beep_mask &= 0x8000; /* preserve beep enable */
499 data->beep_mask |= BEEP_MASK_TO_REG(val, data->type);
500 w83781d_write_value(data, W83781D_REG_BEEP_INTS1,
501 data->beep_mask & 0xff);
502 w83781d_write_value(data, W83781D_REG_BEEP_INTS2,
503 (data->beep_mask >> 8) & 0xff);
504 if (data->type != w83781d && data->type != as99127f) {
505 w83781d_write_value(data, W83781D_REG_BEEP_INTS3,
506 ((data->beep_mask) >> 16) & 0xff);
507 }
508 mutex_unlock(&data->update_lock);
509
510 return count;
511 }
512
513 static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR,
514 show_beep_mask, store_beep_mask);
515
516 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
517 char *buf)
518 {
519 struct w83781d_data *data = w83781d_update_device(dev);
520 int bitnr = to_sensor_dev_attr(attr)->index;
521 return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
522 }
523
524 static ssize_t
525 store_beep(struct device *dev, struct device_attribute *attr,
526 const char *buf, size_t count)
527 {
528 struct w83781d_data *data = dev_get_drvdata(dev);
529 int bitnr = to_sensor_dev_attr(attr)->index;
530 unsigned long bit;
531 u8 reg;
532
533 bit = simple_strtoul(buf, NULL, 10);
534 if (bit & ~1)
535 return -EINVAL;
536
537 mutex_lock(&data->update_lock);
538 if (bit)
539 data->beep_mask |= (1 << bitnr);
540 else
541 data->beep_mask &= ~(1 << bitnr);
542
543 if (bitnr < 8) {
544 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS1);
545 if (bit)
546 reg |= (1 << bitnr);
547 else
548 reg &= ~(1 << bitnr);
549 w83781d_write_value(data, W83781D_REG_BEEP_INTS1, reg);
550 } else if (bitnr < 16) {
551 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS2);
552 if (bit)
553 reg |= (1 << (bitnr - 8));
554 else
555 reg &= ~(1 << (bitnr - 8));
556 w83781d_write_value(data, W83781D_REG_BEEP_INTS2, reg);
557 } else {
558 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS3);
559 if (bit)
560 reg |= (1 << (bitnr - 16));
561 else
562 reg &= ~(1 << (bitnr - 16));
563 w83781d_write_value(data, W83781D_REG_BEEP_INTS3, reg);
564 }
565 mutex_unlock(&data->update_lock);
566
567 return count;
568 }
569
570 /* The W83781D has a single beep bit for temp2 and temp3 */
571 static ssize_t show_temp3_beep(struct device *dev,
572 struct device_attribute *attr, char *buf)
573 {
574 struct w83781d_data *data = w83781d_update_device(dev);
575 int bitnr = (data->type == w83781d) ? 5 : 13;
576 return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
577 }
578
579 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
580 show_beep, store_beep, 0);
581 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR,
582 show_beep, store_beep, 1);
583 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR,
584 show_beep, store_beep, 2);
585 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR,
586 show_beep, store_beep, 3);
587 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR,
588 show_beep, store_beep, 8);
589 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO | S_IWUSR,
590 show_beep, store_beep, 9);
591 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO | S_IWUSR,
592 show_beep, store_beep, 10);
593 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO | S_IWUSR,
594 show_beep, store_beep, 16);
595 static SENSOR_DEVICE_ATTR(in8_beep, S_IRUGO | S_IWUSR,
596 show_beep, store_beep, 17);
597 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR,
598 show_beep, store_beep, 6);
599 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR,
600 show_beep, store_beep, 7);
601 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO | S_IWUSR,
602 show_beep, store_beep, 11);
603 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
604 show_beep, store_beep, 4);
605 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR,
606 show_beep, store_beep, 5);
607 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO,
608 show_temp3_beep, store_beep, 13);
609 static SENSOR_DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
610 show_beep, store_beep, 15);
611
612 static ssize_t
613 show_fan_div(struct device *dev, struct device_attribute *da, char *buf)
614 {
615 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
616 struct w83781d_data *data = w83781d_update_device(dev);
617 return sprintf(buf, "%ld\n",
618 (long) DIV_FROM_REG(data->fan_div[attr->index]));
619 }
620
621 /* Note: we save and restore the fan minimum here, because its value is
622 determined in part by the fan divisor. This follows the principle of
623 least surprise; the user doesn't expect the fan minimum to change just
624 because the divisor changed. */
625 static ssize_t
626 store_fan_div(struct device *dev, struct device_attribute *da,
627 const char *buf, size_t count)
628 {
629 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
630 struct w83781d_data *data = dev_get_drvdata(dev);
631 unsigned long min;
632 int nr = attr->index;
633 u8 reg;
634 unsigned long val = simple_strtoul(buf, NULL, 10);
635
636 mutex_lock(&data->update_lock);
637
638 /* Save fan_min */
639 min = FAN_FROM_REG(data->fan_min[nr],
640 DIV_FROM_REG(data->fan_div[nr]));
641
642 data->fan_div[nr] = DIV_TO_REG(val, data->type);
643
644 reg = (w83781d_read_value(data, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV)
645 & (nr==0 ? 0xcf : 0x3f))
646 | ((data->fan_div[nr] & 0x03) << (nr==0 ? 4 : 6));
647 w83781d_write_value(data, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV, reg);
648
649 /* w83781d and as99127f don't have extended divisor bits */
650 if (data->type != w83781d && data->type != as99127f) {
651 reg = (w83781d_read_value(data, W83781D_REG_VBAT)
652 & ~(1 << (5 + nr)))
653 | ((data->fan_div[nr] & 0x04) << (3 + nr));
654 w83781d_write_value(data, W83781D_REG_VBAT, reg);
655 }
656
657 /* Restore fan_min */
658 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
659 w83781d_write_value(data, W83781D_REG_FAN_MIN(nr), data->fan_min[nr]);
660
661 mutex_unlock(&data->update_lock);
662 return count;
663 }
664
665 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
666 show_fan_div, store_fan_div, 0);
667 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
668 show_fan_div, store_fan_div, 1);
669 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR,
670 show_fan_div, store_fan_div, 2);
671
672 static ssize_t
673 show_pwm(struct device *dev, struct device_attribute *da, char *buf)
674 {
675 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
676 struct w83781d_data *data = w83781d_update_device(dev);
677 return sprintf(buf, "%d\n", (int)data->pwm[attr->index]);
678 }
679
680 static ssize_t
681 show_pwm2_enable(struct device *dev, struct device_attribute *da, char *buf)
682 {
683 struct w83781d_data *data = w83781d_update_device(dev);
684 return sprintf(buf, "%d\n", (int)data->pwm2_enable);
685 }
686
687 static ssize_t
688 store_pwm(struct device *dev, struct device_attribute *da, const char *buf,
689 size_t count)
690 {
691 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
692 struct w83781d_data *data = dev_get_drvdata(dev);
693 int nr = attr->index;
694 u32 val;
695
696 val = simple_strtoul(buf, NULL, 10);
697
698 mutex_lock(&data->update_lock);
699 data->pwm[nr] = SENSORS_LIMIT(val, 0, 255);
700 w83781d_write_value(data, W83781D_REG_PWM[nr], data->pwm[nr]);
701 mutex_unlock(&data->update_lock);
702 return count;
703 }
704
705 static ssize_t
706 store_pwm2_enable(struct device *dev, struct device_attribute *da,
707 const char *buf, size_t count)
708 {
709 struct w83781d_data *data = dev_get_drvdata(dev);
710 u32 val, reg;
711
712 val = simple_strtoul(buf, NULL, 10);
713
714 mutex_lock(&data->update_lock);
715
716 switch (val) {
717 case 0:
718 case 1:
719 reg = w83781d_read_value(data, W83781D_REG_PWMCLK12);
720 w83781d_write_value(data, W83781D_REG_PWMCLK12,
721 (reg & 0xf7) | (val << 3));
722
723 reg = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
724 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG,
725 (reg & 0xef) | (!val << 4));
726
727 data->pwm2_enable = val;
728 break;
729
730 default:
731 mutex_unlock(&data->update_lock);
732 return -EINVAL;
733 }
734
735 mutex_unlock(&data->update_lock);
736 return count;
737 }
738
739 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 0);
740 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 1);
741 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 2);
742 static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 3);
743 /* only PWM2 can be enabled/disabled */
744 static DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
745 show_pwm2_enable, store_pwm2_enable);
746
747 static ssize_t
748 show_sensor(struct device *dev, struct device_attribute *da, char *buf)
749 {
750 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
751 struct w83781d_data *data = w83781d_update_device(dev);
752 return sprintf(buf, "%d\n", (int)data->sens[attr->index]);
753 }
754
755 static ssize_t
756 store_sensor(struct device *dev, struct device_attribute *da,
757 const char *buf, size_t count)
758 {
759 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
760 struct w83781d_data *data = dev_get_drvdata(dev);
761 int nr = attr->index;
762 u32 val, tmp;
763
764 val = simple_strtoul(buf, NULL, 10);
765
766 mutex_lock(&data->update_lock);
767
768 switch (val) {
769 case 1: /* PII/Celeron diode */
770 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
771 w83781d_write_value(data, W83781D_REG_SCFG1,
772 tmp | BIT_SCFG1[nr]);
773 tmp = w83781d_read_value(data, W83781D_REG_SCFG2);
774 w83781d_write_value(data, W83781D_REG_SCFG2,
775 tmp | BIT_SCFG2[nr]);
776 data->sens[nr] = val;
777 break;
778 case 2: /* 3904 */
779 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
780 w83781d_write_value(data, W83781D_REG_SCFG1,
781 tmp | BIT_SCFG1[nr]);
782 tmp = w83781d_read_value(data, W83781D_REG_SCFG2);
783 w83781d_write_value(data, W83781D_REG_SCFG2,
784 tmp & ~BIT_SCFG2[nr]);
785 data->sens[nr] = val;
786 break;
787 case W83781D_DEFAULT_BETA:
788 dev_warn(dev, "Sensor type %d is deprecated, please use 4 "
789 "instead\n", W83781D_DEFAULT_BETA);
790 /* fall through */
791 case 4: /* thermistor */
792 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
793 w83781d_write_value(data, W83781D_REG_SCFG1,
794 tmp & ~BIT_SCFG1[nr]);
795 data->sens[nr] = val;
796 break;
797 default:
798 dev_err(dev, "Invalid sensor type %ld; must be 1, 2, or 4\n",
799 (long) val);
800 break;
801 }
802
803 mutex_unlock(&data->update_lock);
804 return count;
805 }
806
807 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR,
808 show_sensor, store_sensor, 0);
809 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR,
810 show_sensor, store_sensor, 1);
811 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR,
812 show_sensor, store_sensor, 2);
813
814 /* Assumes that adapter is of I2C, not ISA variety.
815 * OTHERWISE DON'T CALL THIS
816 */
817 static int
818 w83781d_detect_subclients(struct i2c_client *new_client)
819 {
820 int i, val1 = 0, id;
821 int err;
822 int address = new_client->addr;
823 unsigned short sc_addr[2];
824 struct i2c_adapter *adapter = new_client->adapter;
825 struct w83781d_data *data = i2c_get_clientdata(new_client);
826 enum chips kind = data->type;
827
828 id = i2c_adapter_id(adapter);
829
830 if (force_subclients[0] == id && force_subclients[1] == address) {
831 for (i = 2; i <= 3; i++) {
832 if (force_subclients[i] < 0x48 ||
833 force_subclients[i] > 0x4f) {
834 dev_err(&new_client->dev, "Invalid subclient "
835 "address %d; must be 0x48-0x4f\n",
836 force_subclients[i]);
837 err = -EINVAL;
838 goto ERROR_SC_1;
839 }
840 }
841 w83781d_write_value(data, W83781D_REG_I2C_SUBADDR,
842 (force_subclients[2] & 0x07) |
843 ((force_subclients[3] & 0x07) << 4));
844 sc_addr[0] = force_subclients[2];
845 } else {
846 val1 = w83781d_read_value(data, W83781D_REG_I2C_SUBADDR);
847 sc_addr[0] = 0x48 + (val1 & 0x07);
848 }
849
850 if (kind != w83783s) {
851 if (force_subclients[0] == id &&
852 force_subclients[1] == address) {
853 sc_addr[1] = force_subclients[3];
854 } else {
855 sc_addr[1] = 0x48 + ((val1 >> 4) & 0x07);
856 }
857 if (sc_addr[0] == sc_addr[1]) {
858 dev_err(&new_client->dev,
859 "Duplicate addresses 0x%x for subclients.\n",
860 sc_addr[0]);
861 err = -EBUSY;
862 goto ERROR_SC_2;
863 }
864 }
865
866 for (i = 0; i <= 1; i++) {
867 data->lm75[i] = i2c_new_dummy(adapter, sc_addr[i]);
868 if (!data->lm75[i]) {
869 dev_err(&new_client->dev, "Subclient %d "
870 "registration at address 0x%x "
871 "failed.\n", i, sc_addr[i]);
872 err = -ENOMEM;
873 if (i == 1)
874 goto ERROR_SC_3;
875 goto ERROR_SC_2;
876 }
877 if (kind == w83783s)
878 break;
879 }
880
881 return 0;
882
883 /* Undo inits in case of errors */
884 ERROR_SC_3:
885 i2c_unregister_device(data->lm75[0]);
886 ERROR_SC_2:
887 ERROR_SC_1:
888 return err;
889 }
890
891 #define IN_UNIT_ATTRS(X) \
892 &sensor_dev_attr_in##X##_input.dev_attr.attr, \
893 &sensor_dev_attr_in##X##_min.dev_attr.attr, \
894 &sensor_dev_attr_in##X##_max.dev_attr.attr, \
895 &sensor_dev_attr_in##X##_alarm.dev_attr.attr, \
896 &sensor_dev_attr_in##X##_beep.dev_attr.attr
897
898 #define FAN_UNIT_ATTRS(X) \
899 &sensor_dev_attr_fan##X##_input.dev_attr.attr, \
900 &sensor_dev_attr_fan##X##_min.dev_attr.attr, \
901 &sensor_dev_attr_fan##X##_div.dev_attr.attr, \
902 &sensor_dev_attr_fan##X##_alarm.dev_attr.attr, \
903 &sensor_dev_attr_fan##X##_beep.dev_attr.attr
904
905 #define TEMP_UNIT_ATTRS(X) \
906 &sensor_dev_attr_temp##X##_input.dev_attr.attr, \
907 &sensor_dev_attr_temp##X##_max.dev_attr.attr, \
908 &sensor_dev_attr_temp##X##_max_hyst.dev_attr.attr, \
909 &sensor_dev_attr_temp##X##_alarm.dev_attr.attr, \
910 &sensor_dev_attr_temp##X##_beep.dev_attr.attr
911
912 static struct attribute* w83781d_attributes[] = {
913 IN_UNIT_ATTRS(0),
914 IN_UNIT_ATTRS(2),
915 IN_UNIT_ATTRS(3),
916 IN_UNIT_ATTRS(4),
917 IN_UNIT_ATTRS(5),
918 IN_UNIT_ATTRS(6),
919 FAN_UNIT_ATTRS(1),
920 FAN_UNIT_ATTRS(2),
921 FAN_UNIT_ATTRS(3),
922 TEMP_UNIT_ATTRS(1),
923 TEMP_UNIT_ATTRS(2),
924 &dev_attr_cpu0_vid.attr,
925 &dev_attr_vrm.attr,
926 &dev_attr_alarms.attr,
927 &dev_attr_beep_mask.attr,
928 &sensor_dev_attr_beep_enable.dev_attr.attr,
929 NULL
930 };
931 static const struct attribute_group w83781d_group = {
932 .attrs = w83781d_attributes,
933 };
934
935 static struct attribute *w83781d_attributes_opt[] = {
936 IN_UNIT_ATTRS(1),
937 IN_UNIT_ATTRS(7),
938 IN_UNIT_ATTRS(8),
939 TEMP_UNIT_ATTRS(3),
940 &sensor_dev_attr_pwm1.dev_attr.attr,
941 &sensor_dev_attr_pwm2.dev_attr.attr,
942 &sensor_dev_attr_pwm3.dev_attr.attr,
943 &sensor_dev_attr_pwm4.dev_attr.attr,
944 &dev_attr_pwm2_enable.attr,
945 &sensor_dev_attr_temp1_type.dev_attr.attr,
946 &sensor_dev_attr_temp2_type.dev_attr.attr,
947 &sensor_dev_attr_temp3_type.dev_attr.attr,
948 NULL
949 };
950 static const struct attribute_group w83781d_group_opt = {
951 .attrs = w83781d_attributes_opt,
952 };
953
954 /* No clean up is done on error, it's up to the caller */
955 static int
956 w83781d_create_files(struct device *dev, int kind, int is_isa)
957 {
958 int err;
959
960 if ((err = sysfs_create_group(&dev->kobj, &w83781d_group)))
961 return err;
962
963 if (kind != w83783s) {
964 if ((err = device_create_file(dev,
965 &sensor_dev_attr_in1_input.dev_attr))
966 || (err = device_create_file(dev,
967 &sensor_dev_attr_in1_min.dev_attr))
968 || (err = device_create_file(dev,
969 &sensor_dev_attr_in1_max.dev_attr))
970 || (err = device_create_file(dev,
971 &sensor_dev_attr_in1_alarm.dev_attr))
972 || (err = device_create_file(dev,
973 &sensor_dev_attr_in1_beep.dev_attr)))
974 return err;
975 }
976 if (kind != as99127f && kind != w83781d && kind != w83783s) {
977 if ((err = device_create_file(dev,
978 &sensor_dev_attr_in7_input.dev_attr))
979 || (err = device_create_file(dev,
980 &sensor_dev_attr_in7_min.dev_attr))
981 || (err = device_create_file(dev,
982 &sensor_dev_attr_in7_max.dev_attr))
983 || (err = device_create_file(dev,
984 &sensor_dev_attr_in7_alarm.dev_attr))
985 || (err = device_create_file(dev,
986 &sensor_dev_attr_in7_beep.dev_attr))
987 || (err = device_create_file(dev,
988 &sensor_dev_attr_in8_input.dev_attr))
989 || (err = device_create_file(dev,
990 &sensor_dev_attr_in8_min.dev_attr))
991 || (err = device_create_file(dev,
992 &sensor_dev_attr_in8_max.dev_attr))
993 || (err = device_create_file(dev,
994 &sensor_dev_attr_in8_alarm.dev_attr))
995 || (err = device_create_file(dev,
996 &sensor_dev_attr_in8_beep.dev_attr)))
997 return err;
998 }
999 if (kind != w83783s) {
1000 if ((err = device_create_file(dev,
1001 &sensor_dev_attr_temp3_input.dev_attr))
1002 || (err = device_create_file(dev,
1003 &sensor_dev_attr_temp3_max.dev_attr))
1004 || (err = device_create_file(dev,
1005 &sensor_dev_attr_temp3_max_hyst.dev_attr))
1006 || (err = device_create_file(dev,
1007 &sensor_dev_attr_temp3_alarm.dev_attr))
1008 || (err = device_create_file(dev,
1009 &sensor_dev_attr_temp3_beep.dev_attr)))
1010 return err;
1011
1012 if (kind != w83781d) {
1013 err = sysfs_chmod_file(&dev->kobj,
1014 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1015 S_IRUGO | S_IWUSR);
1016 if (err)
1017 return err;
1018 }
1019 }
1020
1021 if (kind != w83781d && kind != as99127f) {
1022 if ((err = device_create_file(dev,
1023 &sensor_dev_attr_pwm1.dev_attr))
1024 || (err = device_create_file(dev,
1025 &sensor_dev_attr_pwm2.dev_attr))
1026 || (err = device_create_file(dev, &dev_attr_pwm2_enable)))
1027 return err;
1028 }
1029 if (kind == w83782d && !is_isa) {
1030 if ((err = device_create_file(dev,
1031 &sensor_dev_attr_pwm3.dev_attr))
1032 || (err = device_create_file(dev,
1033 &sensor_dev_attr_pwm4.dev_attr)))
1034 return err;
1035 }
1036
1037 if (kind != as99127f && kind != w83781d) {
1038 if ((err = device_create_file(dev,
1039 &sensor_dev_attr_temp1_type.dev_attr))
1040 || (err = device_create_file(dev,
1041 &sensor_dev_attr_temp2_type.dev_attr)))
1042 return err;
1043 if (kind != w83783s) {
1044 if ((err = device_create_file(dev,
1045 &sensor_dev_attr_temp3_type.dev_attr)))
1046 return err;
1047 }
1048 }
1049
1050 return 0;
1051 }
1052
1053 /* Return 0 if detection is successful, -ENODEV otherwise */
1054 static int
1055 w83781d_detect(struct i2c_client *client, struct i2c_board_info *info)
1056 {
1057 int val1, val2;
1058 struct w83781d_data *isa = w83781d_data_if_isa();
1059 struct i2c_adapter *adapter = client->adapter;
1060 int address = client->addr;
1061 const char *client_name;
1062 enum vendor { winbond, asus } vendid;
1063
1064 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1065 return -ENODEV;
1066
1067 /* We block updates of the ISA device to minimize the risk of
1068 concurrent access to the same W83781D chip through different
1069 interfaces. */
1070 if (isa)
1071 mutex_lock(&isa->update_lock);
1072
1073 if (i2c_smbus_read_byte_data(client, W83781D_REG_CONFIG) & 0x80) {
1074 dev_dbg(&adapter->dev,
1075 "Detection of w83781d chip failed at step 3\n");
1076 goto err_nodev;
1077 }
1078
1079 val1 = i2c_smbus_read_byte_data(client, W83781D_REG_BANK);
1080 val2 = i2c_smbus_read_byte_data(client, W83781D_REG_CHIPMAN);
1081 /* Check for Winbond or Asus ID if in bank 0 */
1082 if (!(val1 & 0x07) &&
1083 ((!(val1 & 0x80) && val2 != 0xa3 && val2 != 0xc3) ||
1084 ( (val1 & 0x80) && val2 != 0x5c && val2 != 0x12))) {
1085 dev_dbg(&adapter->dev,
1086 "Detection of w83781d chip failed at step 4\n");
1087 goto err_nodev;
1088 }
1089 /* If Winbond SMBus, check address at 0x48.
1090 Asus doesn't support, except for as99127f rev.2 */
1091 if ((!(val1 & 0x80) && val2 == 0xa3) ||
1092 ( (val1 & 0x80) && val2 == 0x5c)) {
1093 if (i2c_smbus_read_byte_data(client, W83781D_REG_I2C_ADDR)
1094 != address) {
1095 dev_dbg(&adapter->dev,
1096 "Detection of w83781d chip failed at step 5\n");
1097 goto err_nodev;
1098 }
1099 }
1100
1101 /* Put it now into bank 0 and Vendor ID High Byte */
1102 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1103 (i2c_smbus_read_byte_data(client, W83781D_REG_BANK)
1104 & 0x78) | 0x80);
1105
1106 /* Get the vendor ID */
1107 val2 = i2c_smbus_read_byte_data(client, W83781D_REG_CHIPMAN);
1108 if (val2 == 0x5c)
1109 vendid = winbond;
1110 else if (val2 == 0x12)
1111 vendid = asus;
1112 else {
1113 dev_dbg(&adapter->dev,
1114 "w83781d chip vendor is neither Winbond nor Asus\n");
1115 goto err_nodev;
1116 }
1117
1118 /* Determine the chip type. */
1119 val1 = i2c_smbus_read_byte_data(client, W83781D_REG_WCHIPID);
1120 if ((val1 == 0x10 || val1 == 0x11) && vendid == winbond)
1121 client_name = "w83781d";
1122 else if (val1 == 0x30 && vendid == winbond)
1123 client_name = "w83782d";
1124 else if (val1 == 0x40 && vendid == winbond && address == 0x2d)
1125 client_name = "w83783s";
1126 else if (val1 == 0x31)
1127 client_name = "as99127f";
1128 else
1129 goto err_nodev;
1130
1131 if (val1 <= 0x30 && w83781d_alias_detect(client, val1)) {
1132 dev_dbg(&adapter->dev, "Device at 0x%02x appears to "
1133 "be the same as ISA device\n", address);
1134 goto err_nodev;
1135 }
1136
1137 if (isa)
1138 mutex_unlock(&isa->update_lock);
1139
1140 strlcpy(info->type, client_name, I2C_NAME_SIZE);
1141
1142 return 0;
1143
1144 err_nodev:
1145 if (isa)
1146 mutex_unlock(&isa->update_lock);
1147 return -ENODEV;
1148 }
1149
1150 static int
1151 w83781d_probe(struct i2c_client *client, const struct i2c_device_id *id)
1152 {
1153 struct device *dev = &client->dev;
1154 struct w83781d_data *data;
1155 int err;
1156
1157 data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL);
1158 if (!data) {
1159 err = -ENOMEM;
1160 goto ERROR1;
1161 }
1162
1163 i2c_set_clientdata(client, data);
1164 mutex_init(&data->lock);
1165 mutex_init(&data->update_lock);
1166
1167 data->type = id->driver_data;
1168 data->client = client;
1169
1170 /* attach secondary i2c lm75-like clients */
1171 err = w83781d_detect_subclients(client);
1172 if (err)
1173 goto ERROR3;
1174
1175 /* Initialize the chip */
1176 w83781d_init_device(dev);
1177
1178 /* Register sysfs hooks */
1179 err = w83781d_create_files(dev, data->type, 0);
1180 if (err)
1181 goto ERROR4;
1182
1183 data->hwmon_dev = hwmon_device_register(dev);
1184 if (IS_ERR(data->hwmon_dev)) {
1185 err = PTR_ERR(data->hwmon_dev);
1186 goto ERROR4;
1187 }
1188
1189 return 0;
1190
1191 ERROR4:
1192 sysfs_remove_group(&dev->kobj, &w83781d_group);
1193 sysfs_remove_group(&dev->kobj, &w83781d_group_opt);
1194
1195 if (data->lm75[0])
1196 i2c_unregister_device(data->lm75[0]);
1197 if (data->lm75[1])
1198 i2c_unregister_device(data->lm75[1]);
1199 ERROR3:
1200 i2c_set_clientdata(client, NULL);
1201 kfree(data);
1202 ERROR1:
1203 return err;
1204 }
1205
1206 static int
1207 w83781d_remove(struct i2c_client *client)
1208 {
1209 struct w83781d_data *data = i2c_get_clientdata(client);
1210 struct device *dev = &client->dev;
1211
1212 hwmon_device_unregister(data->hwmon_dev);
1213
1214 sysfs_remove_group(&dev->kobj, &w83781d_group);
1215 sysfs_remove_group(&dev->kobj, &w83781d_group_opt);
1216
1217 if (data->lm75[0])
1218 i2c_unregister_device(data->lm75[0]);
1219 if (data->lm75[1])
1220 i2c_unregister_device(data->lm75[1]);
1221
1222 i2c_set_clientdata(client, NULL);
1223 kfree(data);
1224
1225 return 0;
1226 }
1227
1228 static int
1229 w83781d_read_value_i2c(struct w83781d_data *data, u16 reg)
1230 {
1231 struct i2c_client *client = data->client;
1232 int res, bank;
1233 struct i2c_client *cl;
1234
1235 bank = (reg >> 8) & 0x0f;
1236 if (bank > 2)
1237 /* switch banks */
1238 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1239 bank);
1240 if (bank == 0 || bank > 2) {
1241 res = i2c_smbus_read_byte_data(client, reg & 0xff);
1242 } else {
1243 /* switch to subclient */
1244 cl = data->lm75[bank - 1];
1245 /* convert from ISA to LM75 I2C addresses */
1246 switch (reg & 0xff) {
1247 case 0x50: /* TEMP */
1248 res = swab16(i2c_smbus_read_word_data(cl, 0));
1249 break;
1250 case 0x52: /* CONFIG */
1251 res = i2c_smbus_read_byte_data(cl, 1);
1252 break;
1253 case 0x53: /* HYST */
1254 res = swab16(i2c_smbus_read_word_data(cl, 2));
1255 break;
1256 case 0x55: /* OVER */
1257 default:
1258 res = swab16(i2c_smbus_read_word_data(cl, 3));
1259 break;
1260 }
1261 }
1262 if (bank > 2)
1263 i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1264
1265 return res;
1266 }
1267
1268 static int
1269 w83781d_write_value_i2c(struct w83781d_data *data, u16 reg, u16 value)
1270 {
1271 struct i2c_client *client = data->client;
1272 int bank;
1273 struct i2c_client *cl;
1274
1275 bank = (reg >> 8) & 0x0f;
1276 if (bank > 2)
1277 /* switch banks */
1278 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1279 bank);
1280 if (bank == 0 || bank > 2) {
1281 i2c_smbus_write_byte_data(client, reg & 0xff,
1282 value & 0xff);
1283 } else {
1284 /* switch to subclient */
1285 cl = data->lm75[bank - 1];
1286 /* convert from ISA to LM75 I2C addresses */
1287 switch (reg & 0xff) {
1288 case 0x52: /* CONFIG */
1289 i2c_smbus_write_byte_data(cl, 1, value & 0xff);
1290 break;
1291 case 0x53: /* HYST */
1292 i2c_smbus_write_word_data(cl, 2, swab16(value));
1293 break;
1294 case 0x55: /* OVER */
1295 i2c_smbus_write_word_data(cl, 3, swab16(value));
1296 break;
1297 }
1298 }
1299 if (bank > 2)
1300 i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1301
1302 return 0;
1303 }
1304
1305 static void
1306 w83781d_init_device(struct device *dev)
1307 {
1308 struct w83781d_data *data = dev_get_drvdata(dev);
1309 int i, p;
1310 int type = data->type;
1311 u8 tmp;
1312
1313 if (reset && type != as99127f) { /* this resets registers we don't have
1314 documentation for on the as99127f */
1315 /* Resetting the chip has been the default for a long time,
1316 but it causes the BIOS initializations (fan clock dividers,
1317 thermal sensor types...) to be lost, so it is now optional.
1318 It might even go away if nobody reports it as being useful,
1319 as I see very little reason why this would be needed at
1320 all. */
1321 dev_info(dev, "If reset=1 solved a problem you were "
1322 "having, please report!\n");
1323
1324 /* save these registers */
1325 i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
1326 p = w83781d_read_value(data, W83781D_REG_PWMCLK12);
1327 /* Reset all except Watchdog values and last conversion values
1328 This sets fan-divs to 2, among others */
1329 w83781d_write_value(data, W83781D_REG_CONFIG, 0x80);
1330 /* Restore the registers and disable power-on abnormal beep.
1331 This saves FAN 1/2/3 input/output values set by BIOS. */
1332 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
1333 w83781d_write_value(data, W83781D_REG_PWMCLK12, p);
1334 /* Disable master beep-enable (reset turns it on).
1335 Individual beep_mask should be reset to off but for some reason
1336 disabling this bit helps some people not get beeped */
1337 w83781d_write_value(data, W83781D_REG_BEEP_INTS2, 0);
1338 }
1339
1340 /* Disable power-on abnormal beep, as advised by the datasheet.
1341 Already done if reset=1. */
1342 if (init && !reset && type != as99127f) {
1343 i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
1344 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
1345 }
1346
1347 data->vrm = vid_which_vrm();
1348
1349 if ((type != w83781d) && (type != as99127f)) {
1350 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
1351 for (i = 1; i <= 3; i++) {
1352 if (!(tmp & BIT_SCFG1[i - 1])) {
1353 data->sens[i - 1] = 4;
1354 } else {
1355 if (w83781d_read_value
1356 (data,
1357 W83781D_REG_SCFG2) & BIT_SCFG2[i - 1])
1358 data->sens[i - 1] = 1;
1359 else
1360 data->sens[i - 1] = 2;
1361 }
1362 if (type == w83783s && i == 2)
1363 break;
1364 }
1365 }
1366
1367 if (init && type != as99127f) {
1368 /* Enable temp2 */
1369 tmp = w83781d_read_value(data, W83781D_REG_TEMP2_CONFIG);
1370 if (tmp & 0x01) {
1371 dev_warn(dev, "Enabling temp2, readings "
1372 "might not make sense\n");
1373 w83781d_write_value(data, W83781D_REG_TEMP2_CONFIG,
1374 tmp & 0xfe);
1375 }
1376
1377 /* Enable temp3 */
1378 if (type != w83783s) {
1379 tmp = w83781d_read_value(data,
1380 W83781D_REG_TEMP3_CONFIG);
1381 if (tmp & 0x01) {
1382 dev_warn(dev, "Enabling temp3, "
1383 "readings might not make sense\n");
1384 w83781d_write_value(data,
1385 W83781D_REG_TEMP3_CONFIG, tmp & 0xfe);
1386 }
1387 }
1388 }
1389
1390 /* Start monitoring */
1391 w83781d_write_value(data, W83781D_REG_CONFIG,
1392 (w83781d_read_value(data,
1393 W83781D_REG_CONFIG) & 0xf7)
1394 | 0x01);
1395
1396 /* A few vars need to be filled upon startup */
1397 for (i = 0; i < 3; i++) {
1398 data->fan_min[i] = w83781d_read_value(data,
1399 W83781D_REG_FAN_MIN(i));
1400 }
1401
1402 mutex_init(&data->update_lock);
1403 }
1404
1405 static struct w83781d_data *w83781d_update_device(struct device *dev)
1406 {
1407 struct w83781d_data *data = dev_get_drvdata(dev);
1408 struct i2c_client *client = data->client;
1409 int i;
1410
1411 mutex_lock(&data->update_lock);
1412
1413 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
1414 || !data->valid) {
1415 dev_dbg(dev, "Starting device update\n");
1416
1417 for (i = 0; i <= 8; i++) {
1418 if (data->type == w83783s && i == 1)
1419 continue; /* 783S has no in1 */
1420 data->in[i] =
1421 w83781d_read_value(data, W83781D_REG_IN(i));
1422 data->in_min[i] =
1423 w83781d_read_value(data, W83781D_REG_IN_MIN(i));
1424 data->in_max[i] =
1425 w83781d_read_value(data, W83781D_REG_IN_MAX(i));
1426 if ((data->type != w83782d) && (i == 6))
1427 break;
1428 }
1429 for (i = 0; i < 3; i++) {
1430 data->fan[i] =
1431 w83781d_read_value(data, W83781D_REG_FAN(i));
1432 data->fan_min[i] =
1433 w83781d_read_value(data, W83781D_REG_FAN_MIN(i));
1434 }
1435 if (data->type != w83781d && data->type != as99127f) {
1436 for (i = 0; i < 4; i++) {
1437 data->pwm[i] =
1438 w83781d_read_value(data,
1439 W83781D_REG_PWM[i]);
1440 /* Only W83782D on SMBus has PWM3 and PWM4 */
1441 if ((data->type != w83782d || !client)
1442 && i == 1)
1443 break;
1444 }
1445 /* Only PWM2 can be disabled */
1446 data->pwm2_enable = (w83781d_read_value(data,
1447 W83781D_REG_PWMCLK12) & 0x08) >> 3;
1448 }
1449
1450 data->temp = w83781d_read_value(data, W83781D_REG_TEMP(1));
1451 data->temp_max =
1452 w83781d_read_value(data, W83781D_REG_TEMP_OVER(1));
1453 data->temp_max_hyst =
1454 w83781d_read_value(data, W83781D_REG_TEMP_HYST(1));
1455 data->temp_add[0] =
1456 w83781d_read_value(data, W83781D_REG_TEMP(2));
1457 data->temp_max_add[0] =
1458 w83781d_read_value(data, W83781D_REG_TEMP_OVER(2));
1459 data->temp_max_hyst_add[0] =
1460 w83781d_read_value(data, W83781D_REG_TEMP_HYST(2));
1461 if (data->type != w83783s) {
1462 data->temp_add[1] =
1463 w83781d_read_value(data, W83781D_REG_TEMP(3));
1464 data->temp_max_add[1] =
1465 w83781d_read_value(data,
1466 W83781D_REG_TEMP_OVER(3));
1467 data->temp_max_hyst_add[1] =
1468 w83781d_read_value(data,
1469 W83781D_REG_TEMP_HYST(3));
1470 }
1471 i = w83781d_read_value(data, W83781D_REG_VID_FANDIV);
1472 data->vid = i & 0x0f;
1473 data->vid |= (w83781d_read_value(data,
1474 W83781D_REG_CHIPID) & 0x01) << 4;
1475 data->fan_div[0] = (i >> 4) & 0x03;
1476 data->fan_div[1] = (i >> 6) & 0x03;
1477 data->fan_div[2] = (w83781d_read_value(data,
1478 W83781D_REG_PIN) >> 6) & 0x03;
1479 if ((data->type != w83781d) && (data->type != as99127f)) {
1480 i = w83781d_read_value(data, W83781D_REG_VBAT);
1481 data->fan_div[0] |= (i >> 3) & 0x04;
1482 data->fan_div[1] |= (i >> 4) & 0x04;
1483 data->fan_div[2] |= (i >> 5) & 0x04;
1484 }
1485 if (data->type == w83782d) {
1486 data->alarms = w83781d_read_value(data,
1487 W83782D_REG_ALARM1)
1488 | (w83781d_read_value(data,
1489 W83782D_REG_ALARM2) << 8)
1490 | (w83781d_read_value(data,
1491 W83782D_REG_ALARM3) << 16);
1492 } else if (data->type == w83783s) {
1493 data->alarms = w83781d_read_value(data,
1494 W83782D_REG_ALARM1)
1495 | (w83781d_read_value(data,
1496 W83782D_REG_ALARM2) << 8);
1497 } else {
1498 /* No real-time status registers, fall back to
1499 interrupt status registers */
1500 data->alarms = w83781d_read_value(data,
1501 W83781D_REG_ALARM1)
1502 | (w83781d_read_value(data,
1503 W83781D_REG_ALARM2) << 8);
1504 }
1505 i = w83781d_read_value(data, W83781D_REG_BEEP_INTS2);
1506 data->beep_mask = (i << 8) +
1507 w83781d_read_value(data, W83781D_REG_BEEP_INTS1);
1508 if ((data->type != w83781d) && (data->type != as99127f)) {
1509 data->beep_mask |=
1510 w83781d_read_value(data,
1511 W83781D_REG_BEEP_INTS3) << 16;
1512 }
1513 data->last_updated = jiffies;
1514 data->valid = 1;
1515 }
1516
1517 mutex_unlock(&data->update_lock);
1518
1519 return data;
1520 }
1521
1522 static const struct i2c_device_id w83781d_ids[] = {
1523 { "w83781d", w83781d, },
1524 { "w83782d", w83782d, },
1525 { "w83783s", w83783s, },
1526 { "as99127f", as99127f },
1527 { /* LIST END */ }
1528 };
1529 MODULE_DEVICE_TABLE(i2c, w83781d_ids);
1530
1531 static struct i2c_driver w83781d_driver = {
1532 .class = I2C_CLASS_HWMON,
1533 .driver = {
1534 .name = "w83781d",
1535 },
1536 .probe = w83781d_probe,
1537 .remove = w83781d_remove,
1538 .id_table = w83781d_ids,
1539 .detect = w83781d_detect,
1540 .address_list = normal_i2c,
1541 };
1542
1543 /*
1544 * ISA related code
1545 */
1546 #ifdef CONFIG_ISA
1547
1548 /* ISA device, if found */
1549 static struct platform_device *pdev;
1550
1551 static unsigned short isa_address = 0x290;
1552
1553 /* I2C devices get this name attribute automatically, but for ISA devices
1554 we must create it by ourselves. */
1555 static ssize_t
1556 show_name(struct device *dev, struct device_attribute *devattr, char *buf)
1557 {
1558 struct w83781d_data *data = dev_get_drvdata(dev);
1559 return sprintf(buf, "%s\n", data->name);
1560 }
1561 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1562
1563 static struct w83781d_data *w83781d_data_if_isa(void)
1564 {
1565 return pdev ? platform_get_drvdata(pdev) : NULL;
1566 }
1567
1568 /* Returns 1 if the I2C chip appears to be an alias of the ISA chip */
1569 static int w83781d_alias_detect(struct i2c_client *client, u8 chipid)
1570 {
1571 struct w83781d_data *isa;
1572 int i;
1573
1574 if (!pdev) /* No ISA chip */
1575 return 0;
1576
1577 isa = platform_get_drvdata(pdev);
1578
1579 if (w83781d_read_value(isa, W83781D_REG_I2C_ADDR) != client->addr)
1580 return 0; /* Address doesn't match */
1581 if (w83781d_read_value(isa, W83781D_REG_WCHIPID) != chipid)
1582 return 0; /* Chip type doesn't match */
1583
1584 /* We compare all the limit registers, the config register and the
1585 * interrupt mask registers */
1586 for (i = 0x2b; i <= 0x3d; i++) {
1587 if (w83781d_read_value(isa, i) !=
1588 i2c_smbus_read_byte_data(client, i))
1589 return 0;
1590 }
1591 if (w83781d_read_value(isa, W83781D_REG_CONFIG) !=
1592 i2c_smbus_read_byte_data(client, W83781D_REG_CONFIG))
1593 return 0;
1594 for (i = 0x43; i <= 0x46; i++) {
1595 if (w83781d_read_value(isa, i) !=
1596 i2c_smbus_read_byte_data(client, i))
1597 return 0;
1598 }
1599
1600 return 1;
1601 }
1602
1603 static int
1604 w83781d_read_value_isa(struct w83781d_data *data, u16 reg)
1605 {
1606 int word_sized, res;
1607
1608 word_sized = (((reg & 0xff00) == 0x100)
1609 || ((reg & 0xff00) == 0x200))
1610 && (((reg & 0x00ff) == 0x50)
1611 || ((reg & 0x00ff) == 0x53)
1612 || ((reg & 0x00ff) == 0x55));
1613 if (reg & 0xff00) {
1614 outb_p(W83781D_REG_BANK,
1615 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1616 outb_p(reg >> 8,
1617 data->isa_addr + W83781D_DATA_REG_OFFSET);
1618 }
1619 outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET);
1620 res = inb_p(data->isa_addr + W83781D_DATA_REG_OFFSET);
1621 if (word_sized) {
1622 outb_p((reg & 0xff) + 1,
1623 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1624 res =
1625 (res << 8) + inb_p(data->isa_addr +
1626 W83781D_DATA_REG_OFFSET);
1627 }
1628 if (reg & 0xff00) {
1629 outb_p(W83781D_REG_BANK,
1630 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1631 outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET);
1632 }
1633 return res;
1634 }
1635
1636 static void
1637 w83781d_write_value_isa(struct w83781d_data *data, u16 reg, u16 value)
1638 {
1639 int word_sized;
1640
1641 word_sized = (((reg & 0xff00) == 0x100)
1642 || ((reg & 0xff00) == 0x200))
1643 && (((reg & 0x00ff) == 0x53)
1644 || ((reg & 0x00ff) == 0x55));
1645 if (reg & 0xff00) {
1646 outb_p(W83781D_REG_BANK,
1647 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1648 outb_p(reg >> 8,
1649 data->isa_addr + W83781D_DATA_REG_OFFSET);
1650 }
1651 outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET);
1652 if (word_sized) {
1653 outb_p(value >> 8,
1654 data->isa_addr + W83781D_DATA_REG_OFFSET);
1655 outb_p((reg & 0xff) + 1,
1656 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1657 }
1658 outb_p(value & 0xff, data->isa_addr + W83781D_DATA_REG_OFFSET);
1659 if (reg & 0xff00) {
1660 outb_p(W83781D_REG_BANK,
1661 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1662 outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET);
1663 }
1664 }
1665
1666 /* The SMBus locks itself, usually, but nothing may access the Winbond between
1667 bank switches. ISA access must always be locked explicitly!
1668 We ignore the W83781D BUSY flag at this moment - it could lead to deadlocks,
1669 would slow down the W83781D access and should not be necessary.
1670 There are some ugly typecasts here, but the good news is - they should
1671 nowhere else be necessary! */
1672 static int
1673 w83781d_read_value(struct w83781d_data *data, u16 reg)
1674 {
1675 struct i2c_client *client = data->client;
1676 int res;
1677
1678 mutex_lock(&data->lock);
1679 if (client)
1680 res = w83781d_read_value_i2c(data, reg);
1681 else
1682 res = w83781d_read_value_isa(data, reg);
1683 mutex_unlock(&data->lock);
1684 return res;
1685 }
1686
1687 static int
1688 w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
1689 {
1690 struct i2c_client *client = data->client;
1691
1692 mutex_lock(&data->lock);
1693 if (client)
1694 w83781d_write_value_i2c(data, reg, value);
1695 else
1696 w83781d_write_value_isa(data, reg, value);
1697 mutex_unlock(&data->lock);
1698 return 0;
1699 }
1700
1701 static int __devinit
1702 w83781d_isa_probe(struct platform_device *pdev)
1703 {
1704 int err, reg;
1705 struct w83781d_data *data;
1706 struct resource *res;
1707
1708 /* Reserve the ISA region */
1709 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1710 if (!request_region(res->start + W83781D_ADDR_REG_OFFSET, 2,
1711 "w83781d")) {
1712 err = -EBUSY;
1713 goto exit;
1714 }
1715
1716 data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL);
1717 if (!data) {
1718 err = -ENOMEM;
1719 goto exit_release_region;
1720 }
1721 mutex_init(&data->lock);
1722 data->isa_addr = res->start;
1723 platform_set_drvdata(pdev, data);
1724
1725 reg = w83781d_read_value(data, W83781D_REG_WCHIPID);
1726 switch (reg) {
1727 case 0x30:
1728 data->type = w83782d;
1729 data->name = "w83782d";
1730 break;
1731 default:
1732 data->type = w83781d;
1733 data->name = "w83781d";
1734 }
1735
1736 /* Initialize the W83781D chip */
1737 w83781d_init_device(&pdev->dev);
1738
1739 /* Register sysfs hooks */
1740 err = w83781d_create_files(&pdev->dev, data->type, 1);
1741 if (err)
1742 goto exit_remove_files;
1743
1744 err = device_create_file(&pdev->dev, &dev_attr_name);
1745 if (err)
1746 goto exit_remove_files;
1747
1748 data->hwmon_dev = hwmon_device_register(&pdev->dev);
1749 if (IS_ERR(data->hwmon_dev)) {
1750 err = PTR_ERR(data->hwmon_dev);
1751 goto exit_remove_files;
1752 }
1753
1754 return 0;
1755
1756 exit_remove_files:
1757 sysfs_remove_group(&pdev->dev.kobj, &w83781d_group);
1758 sysfs_remove_group(&pdev->dev.kobj, &w83781d_group_opt);
1759 device_remove_file(&pdev->dev, &dev_attr_name);
1760 kfree(data);
1761 exit_release_region:
1762 release_region(res->start + W83781D_ADDR_REG_OFFSET, 2);
1763 exit:
1764 return err;
1765 }
1766
1767 static int __devexit
1768 w83781d_isa_remove(struct platform_device *pdev)
1769 {
1770 struct w83781d_data *data = platform_get_drvdata(pdev);
1771
1772 hwmon_device_unregister(data->hwmon_dev);
1773 sysfs_remove_group(&pdev->dev.kobj, &w83781d_group);
1774 sysfs_remove_group(&pdev->dev.kobj, &w83781d_group_opt);
1775 device_remove_file(&pdev->dev, &dev_attr_name);
1776 release_region(data->isa_addr + W83781D_ADDR_REG_OFFSET, 2);
1777 kfree(data);
1778
1779 return 0;
1780 }
1781
1782 static struct platform_driver w83781d_isa_driver = {
1783 .driver = {
1784 .owner = THIS_MODULE,
1785 .name = "w83781d",
1786 },
1787 .probe = w83781d_isa_probe,
1788 .remove = __devexit_p(w83781d_isa_remove),
1789 };
1790
1791 /* return 1 if a supported chip is found, 0 otherwise */
1792 static int __init
1793 w83781d_isa_found(unsigned short address)
1794 {
1795 int val, save, found = 0;
1796 int port;
1797
1798 /* Some boards declare base+0 to base+7 as a PNP device, some base+4
1799 * to base+7 and some base+5 to base+6. So we better request each port
1800 * individually for the probing phase. */
1801 for (port = address; port < address + W83781D_EXTENT; port++) {
1802 if (!request_region(port, 1, "w83781d")) {
1803 pr_debug("w83781d: Failed to request port 0x%x\n",
1804 port);
1805 goto release;
1806 }
1807 }
1808
1809 #define REALLY_SLOW_IO
1810 /* We need the timeouts for at least some W83781D-like
1811 chips. But only if we read 'undefined' registers. */
1812 val = inb_p(address + 1);
1813 if (inb_p(address + 2) != val
1814 || inb_p(address + 3) != val
1815 || inb_p(address + 7) != val) {
1816 pr_debug("w83781d: Detection failed at step 1\n");
1817 goto release;
1818 }
1819 #undef REALLY_SLOW_IO
1820
1821 /* We should be able to change the 7 LSB of the address port. The
1822 MSB (busy flag) should be clear initially, set after the write. */
1823 save = inb_p(address + W83781D_ADDR_REG_OFFSET);
1824 if (save & 0x80) {
1825 pr_debug("w83781d: Detection failed at step 2\n");
1826 goto release;
1827 }
1828 val = ~save & 0x7f;
1829 outb_p(val, address + W83781D_ADDR_REG_OFFSET);
1830 if (inb_p(address + W83781D_ADDR_REG_OFFSET) != (val | 0x80)) {
1831 outb_p(save, address + W83781D_ADDR_REG_OFFSET);
1832 pr_debug("w83781d: Detection failed at step 3\n");
1833 goto release;
1834 }
1835
1836 /* We found a device, now see if it could be a W83781D */
1837 outb_p(W83781D_REG_CONFIG, address + W83781D_ADDR_REG_OFFSET);
1838 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1839 if (val & 0x80) {
1840 pr_debug("w83781d: Detection failed at step 4\n");
1841 goto release;
1842 }
1843 outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET);
1844 save = inb_p(address + W83781D_DATA_REG_OFFSET);
1845 outb_p(W83781D_REG_CHIPMAN, address + W83781D_ADDR_REG_OFFSET);
1846 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1847 if ((!(save & 0x80) && (val != 0xa3))
1848 || ((save & 0x80) && (val != 0x5c))) {
1849 pr_debug("w83781d: Detection failed at step 5\n");
1850 goto release;
1851 }
1852 outb_p(W83781D_REG_I2C_ADDR, address + W83781D_ADDR_REG_OFFSET);
1853 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1854 if (val < 0x03 || val > 0x77) { /* Not a valid I2C address */
1855 pr_debug("w83781d: Detection failed at step 6\n");
1856 goto release;
1857 }
1858
1859 /* The busy flag should be clear again */
1860 if (inb_p(address + W83781D_ADDR_REG_OFFSET) & 0x80) {
1861 pr_debug("w83781d: Detection failed at step 7\n");
1862 goto release;
1863 }
1864
1865 /* Determine the chip type */
1866 outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET);
1867 save = inb_p(address + W83781D_DATA_REG_OFFSET);
1868 outb_p(save & 0xf8, address + W83781D_DATA_REG_OFFSET);
1869 outb_p(W83781D_REG_WCHIPID, address + W83781D_ADDR_REG_OFFSET);
1870 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1871 if ((val & 0xfe) == 0x10 /* W83781D */
1872 || val == 0x30) /* W83782D */
1873 found = 1;
1874
1875 if (found)
1876 pr_info("w83781d: Found a %s chip at %#x\n",
1877 val == 0x30 ? "W83782D" : "W83781D", (int)address);
1878
1879 release:
1880 for (port--; port >= address; port--)
1881 release_region(port, 1);
1882 return found;
1883 }
1884
1885 static int __init
1886 w83781d_isa_device_add(unsigned short address)
1887 {
1888 struct resource res = {
1889 .start = address,
1890 .end = address + W83781D_EXTENT - 1,
1891 .name = "w83781d",
1892 .flags = IORESOURCE_IO,
1893 };
1894 int err;
1895
1896 pdev = platform_device_alloc("w83781d", address);
1897 if (!pdev) {
1898 err = -ENOMEM;
1899 printk(KERN_ERR "w83781d: Device allocation failed\n");
1900 goto exit;
1901 }
1902
1903 err = platform_device_add_resources(pdev, &res, 1);
1904 if (err) {
1905 printk(KERN_ERR "w83781d: Device resource addition failed "
1906 "(%d)\n", err);
1907 goto exit_device_put;
1908 }
1909
1910 err = platform_device_add(pdev);
1911 if (err) {
1912 printk(KERN_ERR "w83781d: Device addition failed (%d)\n",
1913 err);
1914 goto exit_device_put;
1915 }
1916
1917 return 0;
1918
1919 exit_device_put:
1920 platform_device_put(pdev);
1921 exit:
1922 pdev = NULL;
1923 return err;
1924 }
1925
1926 static int __init
1927 w83781d_isa_register(void)
1928 {
1929 int res;
1930
1931 if (w83781d_isa_found(isa_address)) {
1932 res = platform_driver_register(&w83781d_isa_driver);
1933 if (res)
1934 goto exit;
1935
1936 /* Sets global pdev as a side effect */
1937 res = w83781d_isa_device_add(isa_address);
1938 if (res)
1939 goto exit_unreg_isa_driver;
1940 }
1941
1942 return 0;
1943
1944 exit_unreg_isa_driver:
1945 platform_driver_unregister(&w83781d_isa_driver);
1946 exit:
1947 return res;
1948 }
1949
1950 static void
1951 w83781d_isa_unregister(void)
1952 {
1953 if (pdev) {
1954 platform_device_unregister(pdev);
1955 platform_driver_unregister(&w83781d_isa_driver);
1956 }
1957 }
1958 #else /* !CONFIG_ISA */
1959
1960 static struct w83781d_data *w83781d_data_if_isa(void)
1961 {
1962 return NULL;
1963 }
1964
1965 static int
1966 w83781d_alias_detect(struct i2c_client *client, u8 chipid)
1967 {
1968 return 0;
1969 }
1970
1971 static int
1972 w83781d_read_value(struct w83781d_data *data, u16 reg)
1973 {
1974 int res;
1975
1976 mutex_lock(&data->lock);
1977 res = w83781d_read_value_i2c(data, reg);
1978 mutex_unlock(&data->lock);
1979
1980 return res;
1981 }
1982
1983 static int
1984 w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
1985 {
1986 mutex_lock(&data->lock);
1987 w83781d_write_value_i2c(data, reg, value);
1988 mutex_unlock(&data->lock);
1989
1990 return 0;
1991 }
1992
1993 static int __init
1994 w83781d_isa_register(void)
1995 {
1996 return 0;
1997 }
1998
1999 static void
2000 w83781d_isa_unregister(void)
2001 {
2002 }
2003 #endif /* CONFIG_ISA */
2004
2005 static int __init
2006 sensors_w83781d_init(void)
2007 {
2008 int res;
2009
2010 /* We register the ISA device first, so that we can skip the
2011 * registration of an I2C interface to the same device. */
2012 res = w83781d_isa_register();
2013 if (res)
2014 goto exit;
2015
2016 res = i2c_add_driver(&w83781d_driver);
2017 if (res)
2018 goto exit_unreg_isa;
2019
2020 return 0;
2021
2022 exit_unreg_isa:
2023 w83781d_isa_unregister();
2024 exit:
2025 return res;
2026 }
2027
2028 static void __exit
2029 sensors_w83781d_exit(void)
2030 {
2031 w83781d_isa_unregister();
2032 i2c_del_driver(&w83781d_driver);
2033 }
2034
2035 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
2036 "Philip Edelbrock <phil@netroedge.com>, "
2037 "and Mark Studebaker <mdsxyz123@yahoo.com>");
2038 MODULE_DESCRIPTION("W83781D driver");
2039 MODULE_LICENSE("GPL");
2040
2041 module_init(sensors_w83781d_init);
2042 module_exit(sensors_w83781d_exit);