?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
kswapd should only wait on IO if there is IO
[linux-2.6/mini2440.git] / drivers / hwmon / w83781d.c
blobe0fa7520400d8c565f0b7c77034a6c0e35cf4a1a
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 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 w83627hf 9 3 2 3 0x21 0x5ca3 yes yes(LPC)
32 w83782d 9 3 2-4 3 0x30 0x5ca3 yes yes
33 w83783s 5-6 3 2 1-2 0x40 0x5ca3 yes no
34
35 */
36
37 #include <linux/module.h>
38 #include <linux/init.h>
39 #include <linux/slab.h>
40 #include <linux/jiffies.h>
41 #include <linux/i2c.h>
42 #include <linux/platform_device.h>
43 #include <linux/ioport.h>
44 #include <linux/hwmon.h>
45 #include <linux/hwmon-vid.h>
46 #include <linux/hwmon-sysfs.h>
47 #include <linux/sysfs.h>
48 #include <linux/err.h>
49 #include <linux/mutex.h>
50 #include <asm/io.h>
51 #include "lm75.h"
52
53 /* ISA device, if found */
54 static struct platform_device *pdev;
55
56 /* Addresses to scan */
57 static unsigned short normal_i2c[] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25,
58 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
59 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
60 static unsigned short isa_address = 0x290;
61
62 /* Insmod parameters */
63 I2C_CLIENT_INSMOD_5(w83781d, w83782d, w83783s, w83627hf, as99127f);
64 I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
65 "{bus, clientaddr, subclientaddr1, subclientaddr2}");
66
67 static int reset;
68 module_param(reset, bool, 0);
69 MODULE_PARM_DESC(reset, "Set to one to reset chip on load");
70
71 static int init = 1;
72 module_param(init, bool, 0);
73 MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization");
74
75 /* Constants specified below */
76
77 /* Length of ISA address segment */
78 #define W83781D_EXTENT 8
79
80 /* Where are the ISA address/data registers relative to the base address */
81 #define W83781D_ADDR_REG_OFFSET 5
82 #define W83781D_DATA_REG_OFFSET 6
83
84 /* The device registers */
85 /* in nr from 0 to 8 */
86 #define W83781D_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
87 (0x554 + (((nr) - 7) * 2)))
88 #define W83781D_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
89 (0x555 + (((nr) - 7) * 2)))
90 #define W83781D_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
91 (0x550 + (nr) - 7))
92
93 /* fan nr from 0 to 2 */
94 #define W83781D_REG_FAN_MIN(nr) (0x3b + (nr))
95 #define W83781D_REG_FAN(nr) (0x28 + (nr))
96
97 #define W83781D_REG_BANK 0x4E
98 #define W83781D_REG_TEMP2_CONFIG 0x152
99 #define W83781D_REG_TEMP3_CONFIG 0x252
100 /* temp nr from 1 to 3 */
101 #define W83781D_REG_TEMP(nr) ((nr == 3) ? (0x0250) : \
102 ((nr == 2) ? (0x0150) : \
103 (0x27)))
104 #define W83781D_REG_TEMP_HYST(nr) ((nr == 3) ? (0x253) : \
105 ((nr == 2) ? (0x153) : \
106 (0x3A)))
107 #define W83781D_REG_TEMP_OVER(nr) ((nr == 3) ? (0x255) : \
108 ((nr == 2) ? (0x155) : \
109 (0x39)))
110
111 #define W83781D_REG_CONFIG 0x40
112
113 /* Interrupt status (W83781D, AS99127F) */
114 #define W83781D_REG_ALARM1 0x41
115 #define W83781D_REG_ALARM2 0x42
116
117 /* Real-time status (W83782D, W83783S, W83627HF) */
118 #define W83782D_REG_ALARM1 0x459
119 #define W83782D_REG_ALARM2 0x45A
120 #define W83782D_REG_ALARM3 0x45B
121
122 #define W83781D_REG_BEEP_CONFIG 0x4D
123 #define W83781D_REG_BEEP_INTS1 0x56
124 #define W83781D_REG_BEEP_INTS2 0x57
125 #define W83781D_REG_BEEP_INTS3 0x453 /* not on W83781D */
126
127 #define W83781D_REG_VID_FANDIV 0x47
128
129 #define W83781D_REG_CHIPID 0x49
130 #define W83781D_REG_WCHIPID 0x58
131 #define W83781D_REG_CHIPMAN 0x4F
132 #define W83781D_REG_PIN 0x4B
133
134 /* 782D/783S only */
135 #define W83781D_REG_VBAT 0x5D
136
137 /* PWM 782D (1-4) and 783S (1-2) only */
138 static const u8 W83781D_REG_PWM[] = { 0x5B, 0x5A, 0x5E, 0x5F };
139 #define W83781D_REG_PWMCLK12 0x5C
140 #define W83781D_REG_PWMCLK34 0x45C
141
142 #define W83781D_REG_I2C_ADDR 0x48
143 #define W83781D_REG_I2C_SUBADDR 0x4A
144
145 /* The following are undocumented in the data sheets however we
146 received the information in an email from Winbond tech support */
147 /* Sensor selection - not on 781d */
148 #define W83781D_REG_SCFG1 0x5D
149 static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 };
150
151 #define W83781D_REG_SCFG2 0x59
152 static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 };
153
154 #define W83781D_DEFAULT_BETA 3435
155
156 /* RT Table registers */
157 #define W83781D_REG_RT_IDX 0x50
158 #define W83781D_REG_RT_VAL 0x51
159
160 /* Conversions */
161 #define IN_TO_REG(val) SENSORS_LIMIT(((val) + 8) / 16, 0, 255)
162 #define IN_FROM_REG(val) ((val) * 16)
163
164 static inline u8
165 FAN_TO_REG(long rpm, int div)
166 {
167 if (rpm == 0)
168 return 255;
169 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
170 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
171 }
172
173 static inline long
174 FAN_FROM_REG(u8 val, int div)
175 {
176 if (val == 0)
177 return -1;
178 if (val == 255)
179 return 0;
180 return 1350000 / (val * div);
181 }
182
183 #define TEMP_TO_REG(val) SENSORS_LIMIT((val) / 1000, -127, 128)
184 #define TEMP_FROM_REG(val) ((val) * 1000)
185
186 #define BEEP_MASK_FROM_REG(val,type) ((type) == as99127f ? \
187 (val) ^ 0x7fff : (val))
188 #define BEEP_MASK_TO_REG(val,type) ((type) == as99127f ? \
189 (~(val)) & 0x7fff : (val) & 0xffffff)
190
191 #define DIV_FROM_REG(val) (1 << (val))
192
193 static inline u8
194 DIV_TO_REG(long val, enum chips type)
195 {
196 int i;
197 val = SENSORS_LIMIT(val, 1,
198 ((type == w83781d
199 || type == as99127f) ? 8 : 128)) >> 1;
200 for (i = 0; i < 7; i++) {
201 if (val == 0)
202 break;
203 val >>= 1;
204 }
205 return i;
206 }
207
208 /* There are some complications in a module like this. First off, W83781D chips
209 may be both present on the SMBus and the ISA bus, and we have to handle
210 those cases separately at some places. Second, there might be several
211 W83781D chips available (well, actually, that is probably never done; but
212 it is a clean illustration of how to handle a case like that). Finally,
213 a specific chip may be attached to *both* ISA and SMBus, and we would
214 not like to detect it double. Fortunately, in the case of the W83781D at
215 least, a register tells us what SMBus address we are on, so that helps
216 a bit - except if there could be more than one SMBus. Groan. No solution
217 for this yet. */
218
219 /* For ISA chips, we abuse the i2c_client addr and name fields. We also use
220 the driver field to differentiate between I2C and ISA chips. */
221 struct w83781d_data {
222 struct i2c_client client;
223 struct device *hwmon_dev;
224 struct mutex lock;
225 enum chips type;
226
227 struct mutex update_lock;
228 char valid; /* !=0 if following fields are valid */
229 unsigned long last_updated; /* In jiffies */
230
231 struct i2c_client *lm75[2]; /* for secondary I2C addresses */
232 /* array of 2 pointers to subclients */
233
234 u8 in[9]; /* Register value - 8 & 9 for 782D only */
235 u8 in_max[9]; /* Register value - 8 & 9 for 782D only */
236 u8 in_min[9]; /* Register value - 8 & 9 for 782D only */
237 u8 fan[3]; /* Register value */
238 u8 fan_min[3]; /* Register value */
239 s8 temp; /* Register value */
240 s8 temp_max; /* Register value */
241 s8 temp_max_hyst; /* Register value */
242 u16 temp_add[2]; /* Register value */
243 u16 temp_max_add[2]; /* Register value */
244 u16 temp_max_hyst_add[2]; /* Register value */
245 u8 fan_div[3]; /* Register encoding, shifted right */
246 u8 vid; /* Register encoding, combined */
247 u32 alarms; /* Register encoding, combined */
248 u32 beep_mask; /* Register encoding, combined */
249 u8 beep_enable; /* Boolean */
250 u8 pwm[4]; /* Register value */
251 u8 pwm2_enable; /* Boolean */
252 u16 sens[3]; /* 782D/783S only.
253 1 = pentium diode; 2 = 3904 diode;
254 4 = thermistor */
255 u8 vrm;
256 };
257
258 static int w83781d_attach_adapter(struct i2c_adapter *adapter);
259 static int w83781d_detect(struct i2c_adapter *adapter, int address, int kind);
260 static int w83781d_detach_client(struct i2c_client *client);
261
262 static int __devinit w83781d_isa_probe(struct platform_device *pdev);
263 static int __devexit w83781d_isa_remove(struct platform_device *pdev);
264
265 static int w83781d_read_value(struct w83781d_data *data, u16 reg);
266 static int w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value);
267 static struct w83781d_data *w83781d_update_device(struct device *dev);
268 static void w83781d_init_device(struct device *dev);
269
270 static struct i2c_driver w83781d_driver = {
271 .driver = {
272 .name = "w83781d",
273 },
274 .id = I2C_DRIVERID_W83781D,
275 .attach_adapter = w83781d_attach_adapter,
276 .detach_client = w83781d_detach_client,
277 };
278
279 static struct platform_driver w83781d_isa_driver = {
280 .driver = {
281 .owner = THIS_MODULE,
282 .name = "w83781d",
283 },
284 .probe = w83781d_isa_probe,
285 .remove = w83781d_isa_remove,
286 };
287
288
289 /* following are the sysfs callback functions */
290 #define show_in_reg(reg) \
291 static ssize_t show_##reg (struct device *dev, struct device_attribute *da, \
292 char *buf) \
293 { \
294 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
295 struct w83781d_data *data = w83781d_update_device(dev); \
296 return sprintf(buf, "%ld\n", \
297 (long)IN_FROM_REG(data->reg[attr->index])); \
298 }
299 show_in_reg(in);
300 show_in_reg(in_min);
301 show_in_reg(in_max);
302
303 #define store_in_reg(REG, reg) \
304 static ssize_t store_in_##reg (struct device *dev, struct device_attribute \
305 *da, const char *buf, size_t count) \
306 { \
307 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
308 struct w83781d_data *data = dev_get_drvdata(dev); \
309 int nr = attr->index; \
310 u32 val; \
311 \
312 val = simple_strtoul(buf, NULL, 10); \
313 \
314 mutex_lock(&data->update_lock); \
315 data->in_##reg[nr] = IN_TO_REG(val); \
316 w83781d_write_value(data, W83781D_REG_IN_##REG(nr), data->in_##reg[nr]); \
317 \
318 mutex_unlock(&data->update_lock); \
319 return count; \
320 }
321 store_in_reg(MIN, min);
322 store_in_reg(MAX, max);
323
324 #define sysfs_in_offsets(offset) \
325 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
326 show_in, NULL, offset); \
327 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
328 show_in_min, store_in_min, offset); \
329 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
330 show_in_max, store_in_max, offset)
331
332 sysfs_in_offsets(0);
333 sysfs_in_offsets(1);
334 sysfs_in_offsets(2);
335 sysfs_in_offsets(3);
336 sysfs_in_offsets(4);
337 sysfs_in_offsets(5);
338 sysfs_in_offsets(6);
339 sysfs_in_offsets(7);
340 sysfs_in_offsets(8);
341
342 #define show_fan_reg(reg) \
343 static ssize_t show_##reg (struct device *dev, struct device_attribute *da, \
344 char *buf) \
345 { \
346 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
347 struct w83781d_data *data = w83781d_update_device(dev); \
348 return sprintf(buf,"%ld\n", \
349 FAN_FROM_REG(data->reg[attr->index], \
350 DIV_FROM_REG(data->fan_div[attr->index]))); \
351 }
352 show_fan_reg(fan);
353 show_fan_reg(fan_min);
354
355 static ssize_t
356 store_fan_min(struct device *dev, struct device_attribute *da,
357 const char *buf, size_t count)
358 {
359 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
360 struct w83781d_data *data = dev_get_drvdata(dev);
361 int nr = attr->index;
362 u32 val;
363
364 val = simple_strtoul(buf, NULL, 10);
365
366 mutex_lock(&data->update_lock);
367 data->fan_min[nr] =
368 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
369 w83781d_write_value(data, W83781D_REG_FAN_MIN(nr),
370 data->fan_min[nr]);
371
372 mutex_unlock(&data->update_lock);
373 return count;
374 }
375
376 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
377 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
378 show_fan_min, store_fan_min, 0);
379 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
380 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
381 show_fan_min, store_fan_min, 1);
382 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
383 static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO | S_IWUSR,
384 show_fan_min, store_fan_min, 2);
385
386 #define show_temp_reg(reg) \
387 static ssize_t show_##reg (struct device *dev, struct device_attribute *da, \
388 char *buf) \
389 { \
390 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
391 struct w83781d_data *data = w83781d_update_device(dev); \
392 int nr = attr->index; \
393 if (nr >= 2) { /* TEMP2 and TEMP3 */ \
394 return sprintf(buf,"%d\n", \
395 LM75_TEMP_FROM_REG(data->reg##_add[nr-2])); \
396 } else { /* TEMP1 */ \
397 return sprintf(buf,"%ld\n", (long)TEMP_FROM_REG(data->reg)); \
398 } \
399 }
400 show_temp_reg(temp);
401 show_temp_reg(temp_max);
402 show_temp_reg(temp_max_hyst);
403
404 #define store_temp_reg(REG, reg) \
405 static ssize_t store_temp_##reg (struct device *dev, \
406 struct device_attribute *da, const char *buf, size_t count) \
407 { \
408 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
409 struct w83781d_data *data = dev_get_drvdata(dev); \
410 int nr = attr->index; \
411 long val; \
412 \
413 val = simple_strtol(buf, NULL, 10); \
414 \
415 mutex_lock(&data->update_lock); \
416 \
417 if (nr >= 2) { /* TEMP2 and TEMP3 */ \
418 data->temp_##reg##_add[nr-2] = LM75_TEMP_TO_REG(val); \
419 w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \
420 data->temp_##reg##_add[nr-2]); \
421 } else { /* TEMP1 */ \
422 data->temp_##reg = TEMP_TO_REG(val); \
423 w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \
424 data->temp_##reg); \
425 } \
426 \
427 mutex_unlock(&data->update_lock); \
428 return count; \
429 }
430 store_temp_reg(OVER, max);
431 store_temp_reg(HYST, max_hyst);
432
433 #define sysfs_temp_offsets(offset) \
434 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
435 show_temp, NULL, offset); \
436 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
437 show_temp_max, store_temp_max, offset); \
438 static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \
439 show_temp_max_hyst, store_temp_max_hyst, offset);
440
441 sysfs_temp_offsets(1);
442 sysfs_temp_offsets(2);
443 sysfs_temp_offsets(3);
444
445 static ssize_t
446 show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
447 {
448 struct w83781d_data *data = w83781d_update_device(dev);
449 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
450 }
451
452 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
453
454 static ssize_t
455 show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
456 {
457 struct w83781d_data *data = dev_get_drvdata(dev);
458 return sprintf(buf, "%ld\n", (long) data->vrm);
459 }
460
461 static ssize_t
462 store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
463 {
464 struct w83781d_data *data = dev_get_drvdata(dev);
465 u32 val;
466
467 val = simple_strtoul(buf, NULL, 10);
468 data->vrm = val;
469
470 return count;
471 }
472
473 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
474
475 static ssize_t
476 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
477 {
478 struct w83781d_data *data = w83781d_update_device(dev);
479 return sprintf(buf, "%u\n", data->alarms);
480 }
481
482 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
483
484 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
485 char *buf)
486 {
487 struct w83781d_data *data = w83781d_update_device(dev);
488 int bitnr = to_sensor_dev_attr(attr)->index;
489 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
490 }
491
492 /* The W83781D has a single alarm bit for temp2 and temp3 */
493 static ssize_t show_temp3_alarm(struct device *dev,
494 struct device_attribute *attr, char *buf)
495 {
496 struct w83781d_data *data = w83781d_update_device(dev);
497 int bitnr = (data->type == w83781d) ? 5 : 13;
498 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
499 }
500
501 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
502 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
503 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
504 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
505 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
506 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9);
507 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10);
508 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16);
509 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17);
510 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
511 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
512 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11);
513 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
514 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
515 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_temp3_alarm, NULL, 0);
516
517 static ssize_t show_beep_mask (struct device *dev, struct device_attribute *attr, char *buf)
518 {
519 struct w83781d_data *data = w83781d_update_device(dev);
520 return sprintf(buf, "%ld\n",
521 (long)BEEP_MASK_FROM_REG(data->beep_mask, data->type));
522 }
523 static ssize_t show_beep_enable (struct device *dev, struct device_attribute *attr, char *buf)
524 {
525 struct w83781d_data *data = w83781d_update_device(dev);
526 return sprintf(buf, "%ld\n", (long)data->beep_enable);
527 }
528
529 static ssize_t
530 store_beep_mask(struct device *dev, struct device_attribute *attr,
531 const char *buf, size_t count)
532 {
533 struct w83781d_data *data = dev_get_drvdata(dev);
534 u32 val;
535
536 val = simple_strtoul(buf, NULL, 10);
537
538 mutex_lock(&data->update_lock);
539 data->beep_mask = BEEP_MASK_TO_REG(val, data->type);
540 w83781d_write_value(data, W83781D_REG_BEEP_INTS1,
541 data->beep_mask & 0xff);
542 w83781d_write_value(data, W83781D_REG_BEEP_INTS2,
543 ((data->beep_mask >> 8) & 0x7f)
544 | data->beep_enable << 7);
545 if (data->type != w83781d && data->type != as99127f) {
546 w83781d_write_value(data, W83781D_REG_BEEP_INTS3,
547 ((data->beep_mask) >> 16) & 0xff);
548 }
549 mutex_unlock(&data->update_lock);
550
551 return count;
552 }
553
554 static ssize_t
555 store_beep_enable(struct device *dev, struct device_attribute *attr,
556 const char *buf, size_t count)
557 {
558 struct w83781d_data *data = dev_get_drvdata(dev);
559 u32 val;
560
561 val = simple_strtoul(buf, NULL, 10);
562 if (val != 0 && val != 1)
563 return -EINVAL;
564
565 mutex_lock(&data->update_lock);
566 data->beep_enable = val;
567 val = w83781d_read_value(data, W83781D_REG_BEEP_INTS2) & 0x7f;
568 val |= data->beep_enable << 7;
569 w83781d_write_value(data, W83781D_REG_BEEP_INTS2, val);
570 mutex_unlock(&data->update_lock);
571
572 return count;
573 }
574
575 static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR,
576 show_beep_mask, store_beep_mask);
577 static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
578 show_beep_enable, store_beep_enable);
579
580 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
581 char *buf)
582 {
583 struct w83781d_data *data = w83781d_update_device(dev);
584 int bitnr = to_sensor_dev_attr(attr)->index;
585 return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
586 }
587
588 static ssize_t
589 store_beep(struct device *dev, struct device_attribute *attr,
590 const char *buf, size_t count)
591 {
592 struct w83781d_data *data = dev_get_drvdata(dev);
593 int bitnr = to_sensor_dev_attr(attr)->index;
594 unsigned long bit;
595 u8 reg;
596
597 bit = simple_strtoul(buf, NULL, 10);
598 if (bit & ~1)
599 return -EINVAL;
600
601 mutex_lock(&data->update_lock);
602 if (bit)
603 data->beep_mask |= (1 << bitnr);
604 else
605 data->beep_mask &= ~(1 << bitnr);
606
607 if (bitnr < 8) {
608 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS1);
609 if (bit)
610 reg |= (1 << bitnr);
611 else
612 reg &= ~(1 << bitnr);
613 w83781d_write_value(data, W83781D_REG_BEEP_INTS1, reg);
614 } else if (bitnr < 16) {
615 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS2);
616 if (bit)
617 reg |= (1 << (bitnr - 8));
618 else
619 reg &= ~(1 << (bitnr - 8));
620 w83781d_write_value(data, W83781D_REG_BEEP_INTS2, reg);
621 } else {
622 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS3);
623 if (bit)
624 reg |= (1 << (bitnr - 16));
625 else
626 reg &= ~(1 << (bitnr - 16));
627 w83781d_write_value(data, W83781D_REG_BEEP_INTS3, reg);
628 }
629 mutex_unlock(&data->update_lock);
630
631 return count;
632 }
633
634 /* The W83781D has a single beep bit for temp2 and temp3 */
635 static ssize_t show_temp3_beep(struct device *dev,
636 struct device_attribute *attr, char *buf)
637 {
638 struct w83781d_data *data = w83781d_update_device(dev);
639 int bitnr = (data->type == w83781d) ? 5 : 13;
640 return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
641 }
642
643 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
644 show_beep, store_beep, 0);
645 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR,
646 show_beep, store_beep, 1);
647 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR,
648 show_beep, store_beep, 2);
649 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR,
650 show_beep, store_beep, 3);
651 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR,
652 show_beep, store_beep, 8);
653 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO | S_IWUSR,
654 show_beep, store_beep, 9);
655 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO | S_IWUSR,
656 show_beep, store_beep, 10);
657 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO | S_IWUSR,
658 show_beep, store_beep, 16);
659 static SENSOR_DEVICE_ATTR(in8_beep, S_IRUGO | S_IWUSR,
660 show_beep, store_beep, 17);
661 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR,
662 show_beep, store_beep, 6);
663 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR,
664 show_beep, store_beep, 7);
665 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO | S_IWUSR,
666 show_beep, store_beep, 11);
667 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
668 show_beep, store_beep, 4);
669 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR,
670 show_beep, store_beep, 5);
671 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO,
672 show_temp3_beep, store_beep, 13);
673
674 static ssize_t
675 show_fan_div(struct device *dev, struct device_attribute *da, char *buf)
676 {
677 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
678 struct w83781d_data *data = w83781d_update_device(dev);
679 return sprintf(buf, "%ld\n",
680 (long) DIV_FROM_REG(data->fan_div[attr->index]));
681 }
682
683 /* Note: we save and restore the fan minimum here, because its value is
684 determined in part by the fan divisor. This follows the principle of
685 least surprise; the user doesn't expect the fan minimum to change just
686 because the divisor changed. */
687 static ssize_t
688 store_fan_div(struct device *dev, struct device_attribute *da,
689 const char *buf, 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 unsigned long min;
694 int nr = attr->index;
695 u8 reg;
696 unsigned long val = simple_strtoul(buf, NULL, 10);
697
698 mutex_lock(&data->update_lock);
699
700 /* Save fan_min */
701 min = FAN_FROM_REG(data->fan_min[nr],
702 DIV_FROM_REG(data->fan_div[nr]));
703
704 data->fan_div[nr] = DIV_TO_REG(val, data->type);
705
706 reg = (w83781d_read_value(data, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV)
707 & (nr==0 ? 0xcf : 0x3f))
708 | ((data->fan_div[nr] & 0x03) << (nr==0 ? 4 : 6));
709 w83781d_write_value(data, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV, reg);
710
711 /* w83781d and as99127f don't have extended divisor bits */
712 if (data->type != w83781d && data->type != as99127f) {
713 reg = (w83781d_read_value(data, W83781D_REG_VBAT)
714 & ~(1 << (5 + nr)))
715 | ((data->fan_div[nr] & 0x04) << (3 + nr));
716 w83781d_write_value(data, W83781D_REG_VBAT, reg);
717 }
718
719 /* Restore fan_min */
720 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
721 w83781d_write_value(data, W83781D_REG_FAN_MIN(nr), data->fan_min[nr]);
722
723 mutex_unlock(&data->update_lock);
724 return count;
725 }
726
727 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
728 show_fan_div, store_fan_div, 0);
729 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
730 show_fan_div, store_fan_div, 1);
731 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR,
732 show_fan_div, store_fan_div, 2);
733
734 static ssize_t
735 show_pwm(struct device *dev, struct device_attribute *da, char *buf)
736 {
737 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
738 struct w83781d_data *data = w83781d_update_device(dev);
739 return sprintf(buf, "%d\n", (int)data->pwm[attr->index]);
740 }
741
742 static ssize_t
743 show_pwm2_enable(struct device *dev, struct device_attribute *da, char *buf)
744 {
745 struct w83781d_data *data = w83781d_update_device(dev);
746 return sprintf(buf, "%d\n", (int)data->pwm2_enable);
747 }
748
749 static ssize_t
750 store_pwm(struct device *dev, struct device_attribute *da, const char *buf,
751 size_t count)
752 {
753 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
754 struct w83781d_data *data = dev_get_drvdata(dev);
755 int nr = attr->index;
756 u32 val;
757
758 val = simple_strtoul(buf, NULL, 10);
759
760 mutex_lock(&data->update_lock);
761 data->pwm[nr] = SENSORS_LIMIT(val, 0, 255);
762 w83781d_write_value(data, W83781D_REG_PWM[nr], data->pwm[nr]);
763 mutex_unlock(&data->update_lock);
764 return count;
765 }
766
767 static ssize_t
768 store_pwm2_enable(struct device *dev, struct device_attribute *da,
769 const char *buf, size_t count)
770 {
771 struct w83781d_data *data = dev_get_drvdata(dev);
772 u32 val, reg;
773
774 val = simple_strtoul(buf, NULL, 10);
775
776 mutex_lock(&data->update_lock);
777
778 switch (val) {
779 case 0:
780 case 1:
781 reg = w83781d_read_value(data, W83781D_REG_PWMCLK12);
782 w83781d_write_value(data, W83781D_REG_PWMCLK12,
783 (reg & 0xf7) | (val << 3));
784
785 reg = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
786 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG,
787 (reg & 0xef) | (!val << 4));
788
789 data->pwm2_enable = val;
790 break;
791
792 default:
793 mutex_unlock(&data->update_lock);
794 return -EINVAL;
795 }
796
797 mutex_unlock(&data->update_lock);
798 return count;
799 }
800
801 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 0);
802 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 1);
803 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 2);
804 static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 3);
805 /* only PWM2 can be enabled/disabled */
806 static DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
807 show_pwm2_enable, store_pwm2_enable);
808
809 static ssize_t
810 show_sensor(struct device *dev, struct device_attribute *da, char *buf)
811 {
812 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
813 struct w83781d_data *data = w83781d_update_device(dev);
814 return sprintf(buf, "%d\n", (int)data->sens[attr->index]);
815 }
816
817 static ssize_t
818 store_sensor(struct device *dev, struct device_attribute *da,
819 const char *buf, size_t count)
820 {
821 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
822 struct w83781d_data *data = dev_get_drvdata(dev);
823 int nr = attr->index;
824 u32 val, tmp;
825
826 val = simple_strtoul(buf, NULL, 10);
827
828 mutex_lock(&data->update_lock);
829
830 switch (val) {
831 case 1: /* PII/Celeron diode */
832 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
833 w83781d_write_value(data, W83781D_REG_SCFG1,
834 tmp | BIT_SCFG1[nr]);
835 tmp = w83781d_read_value(data, W83781D_REG_SCFG2);
836 w83781d_write_value(data, W83781D_REG_SCFG2,
837 tmp | BIT_SCFG2[nr]);
838 data->sens[nr] = val;
839 break;
840 case 2: /* 3904 */
841 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
842 w83781d_write_value(data, W83781D_REG_SCFG1,
843 tmp | BIT_SCFG1[nr]);
844 tmp = w83781d_read_value(data, W83781D_REG_SCFG2);
845 w83781d_write_value(data, W83781D_REG_SCFG2,
846 tmp & ~BIT_SCFG2[nr]);
847 data->sens[nr] = val;
848 break;
849 case W83781D_DEFAULT_BETA:
850 dev_warn(dev, "Sensor type %d is deprecated, please use 4 "
851 "instead\n", W83781D_DEFAULT_BETA);
852 /* fall through */
853 case 4: /* thermistor */
854 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
855 w83781d_write_value(data, W83781D_REG_SCFG1,
856 tmp & ~BIT_SCFG1[nr]);
857 data->sens[nr] = val;
858 break;
859 default:
860 dev_err(dev, "Invalid sensor type %ld; must be 1, 2, or 4\n",
861 (long) val);
862 break;
863 }
864
865 mutex_unlock(&data->update_lock);
866 return count;
867 }
868
869 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR,
870 show_sensor, store_sensor, 0);
871 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR,
872 show_sensor, store_sensor, 1);
873 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR,
874 show_sensor, store_sensor, 2);
875
876 /* I2C devices get this name attribute automatically, but for ISA devices
877 we must create it by ourselves. */
878 static ssize_t
879 show_name(struct device *dev, struct device_attribute *devattr, char *buf)
880 {
881 struct w83781d_data *data = dev_get_drvdata(dev);
882 return sprintf(buf, "%s\n", data->client.name);
883 }
884 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
885
886 /* This function is called when:
887 * w83781d_driver is inserted (when this module is loaded), for each
888 available adapter
889 * when a new adapter is inserted (and w83781d_driver is still present) */
890 static int
891 w83781d_attach_adapter(struct i2c_adapter *adapter)
892 {
893 if (!(adapter->class & I2C_CLASS_HWMON))
894 return 0;
895 return i2c_probe(adapter, &addr_data, w83781d_detect);
896 }
897
898 /* Assumes that adapter is of I2C, not ISA variety.
899 * OTHERWISE DON'T CALL THIS
900 */
901 static int
902 w83781d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
903 struct i2c_client *new_client)
904 {
905 int i, val1 = 0, id;
906 int err;
907 const char *client_name = "";
908 struct w83781d_data *data = i2c_get_clientdata(new_client);
909
910 data->lm75[0] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
911 if (!(data->lm75[0])) {
912 err = -ENOMEM;
913 goto ERROR_SC_0;
914 }
915
916 id = i2c_adapter_id(adapter);
917
918 if (force_subclients[0] == id && force_subclients[1] == address) {
919 for (i = 2; i <= 3; i++) {
920 if (force_subclients[i] < 0x48 ||
921 force_subclients[i] > 0x4f) {
922 dev_err(&new_client->dev, "Invalid subclient "
923 "address %d; must be 0x48-0x4f\n",
924 force_subclients[i]);
925 err = -EINVAL;
926 goto ERROR_SC_1;
927 }
928 }
929 w83781d_write_value(data, W83781D_REG_I2C_SUBADDR,
930 (force_subclients[2] & 0x07) |
931 ((force_subclients[3] & 0x07) << 4));
932 data->lm75[0]->addr = force_subclients[2];
933 } else {
934 val1 = w83781d_read_value(data, W83781D_REG_I2C_SUBADDR);
935 data->lm75[0]->addr = 0x48 + (val1 & 0x07);
936 }
937
938 if (kind != w83783s) {
939 data->lm75[1] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
940 if (!(data->lm75[1])) {
941 err = -ENOMEM;
942 goto ERROR_SC_1;
943 }
944
945 if (force_subclients[0] == id &&
946 force_subclients[1] == address) {
947 data->lm75[1]->addr = force_subclients[3];
948 } else {
949 data->lm75[1]->addr = 0x48 + ((val1 >> 4) & 0x07);
950 }
951 if (data->lm75[0]->addr == data->lm75[1]->addr) {
952 dev_err(&new_client->dev,
953 "Duplicate addresses 0x%x for subclients.\n",
954 data->lm75[0]->addr);
955 err = -EBUSY;
956 goto ERROR_SC_2;
957 }
958 }
959
960 if (kind == w83781d)
961 client_name = "w83781d subclient";
962 else if (kind == w83782d)
963 client_name = "w83782d subclient";
964 else if (kind == w83783s)
965 client_name = "w83783s subclient";
966 else if (kind == w83627hf)
967 client_name = "w83627hf subclient";
968 else if (kind == as99127f)
969 client_name = "as99127f subclient";
970
971 for (i = 0; i <= 1; i++) {
972 /* store all data in w83781d */
973 i2c_set_clientdata(data->lm75[i], NULL);
974 data->lm75[i]->adapter = adapter;
975 data->lm75[i]->driver = &w83781d_driver;
976 data->lm75[i]->flags = 0;
977 strlcpy(data->lm75[i]->name, client_name,
978 I2C_NAME_SIZE);
979 if ((err = i2c_attach_client(data->lm75[i]))) {
980 dev_err(&new_client->dev, "Subclient %d "
981 "registration at address 0x%x "
982 "failed.\n", i, data->lm75[i]->addr);
983 if (i == 1)
984 goto ERROR_SC_3;
985 goto ERROR_SC_2;
986 }
987 if (kind == w83783s)
988 break;
989 }
990
991 return 0;
992
993 /* Undo inits in case of errors */
994 ERROR_SC_3:
995 i2c_detach_client(data->lm75[0]);
996 ERROR_SC_2:
997 kfree(data->lm75[1]);
998 ERROR_SC_1:
999 kfree(data->lm75[0]);
1000 ERROR_SC_0:
1001 return err;
1002 }
1003
1004 #define IN_UNIT_ATTRS(X) \
1005 &sensor_dev_attr_in##X##_input.dev_attr.attr, \
1006 &sensor_dev_attr_in##X##_min.dev_attr.attr, \
1007 &sensor_dev_attr_in##X##_max.dev_attr.attr, \
1008 &sensor_dev_attr_in##X##_alarm.dev_attr.attr, \
1009 &sensor_dev_attr_in##X##_beep.dev_attr.attr
1010
1011 #define FAN_UNIT_ATTRS(X) \
1012 &sensor_dev_attr_fan##X##_input.dev_attr.attr, \
1013 &sensor_dev_attr_fan##X##_min.dev_attr.attr, \
1014 &sensor_dev_attr_fan##X##_div.dev_attr.attr, \
1015 &sensor_dev_attr_fan##X##_alarm.dev_attr.attr, \
1016 &sensor_dev_attr_fan##X##_beep.dev_attr.attr
1017
1018 #define TEMP_UNIT_ATTRS(X) \
1019 &sensor_dev_attr_temp##X##_input.dev_attr.attr, \
1020 &sensor_dev_attr_temp##X##_max.dev_attr.attr, \
1021 &sensor_dev_attr_temp##X##_max_hyst.dev_attr.attr, \
1022 &sensor_dev_attr_temp##X##_alarm.dev_attr.attr, \
1023 &sensor_dev_attr_temp##X##_beep.dev_attr.attr
1024
1025 static struct attribute* w83781d_attributes[] = {
1026 IN_UNIT_ATTRS(0),
1027 IN_UNIT_ATTRS(2),
1028 IN_UNIT_ATTRS(3),
1029 IN_UNIT_ATTRS(4),
1030 IN_UNIT_ATTRS(5),
1031 IN_UNIT_ATTRS(6),
1032 FAN_UNIT_ATTRS(1),
1033 FAN_UNIT_ATTRS(2),
1034 FAN_UNIT_ATTRS(3),
1035 TEMP_UNIT_ATTRS(1),
1036 TEMP_UNIT_ATTRS(2),
1037 &dev_attr_cpu0_vid.attr,
1038 &dev_attr_vrm.attr,
1039 &dev_attr_alarms.attr,
1040 &dev_attr_beep_mask.attr,
1041 &dev_attr_beep_enable.attr,
1042 NULL
1043 };
1044 static const struct attribute_group w83781d_group = {
1045 .attrs = w83781d_attributes,
1046 };
1047
1048 static struct attribute *w83781d_attributes_opt[] = {
1049 IN_UNIT_ATTRS(1),
1050 IN_UNIT_ATTRS(7),
1051 IN_UNIT_ATTRS(8),
1052 TEMP_UNIT_ATTRS(3),
1053 &sensor_dev_attr_pwm1.dev_attr.attr,
1054 &sensor_dev_attr_pwm2.dev_attr.attr,
1055 &sensor_dev_attr_pwm3.dev_attr.attr,
1056 &sensor_dev_attr_pwm4.dev_attr.attr,
1057 &dev_attr_pwm2_enable.attr,
1058 &sensor_dev_attr_temp1_type.dev_attr.attr,
1059 &sensor_dev_attr_temp2_type.dev_attr.attr,
1060 &sensor_dev_attr_temp3_type.dev_attr.attr,
1061 NULL
1062 };
1063 static const struct attribute_group w83781d_group_opt = {
1064 .attrs = w83781d_attributes_opt,
1065 };
1066
1067 /* No clean up is done on error, it's up to the caller */
1068 static int
1069 w83781d_create_files(struct device *dev, int kind, int is_isa)
1070 {
1071 int err;
1072
1073 if ((err = sysfs_create_group(&dev->kobj, &w83781d_group)))
1074 return err;
1075
1076 if (kind != w83783s) {
1077 if ((err = device_create_file(dev,
1078 &sensor_dev_attr_in1_input.dev_attr))
1079 || (err = device_create_file(dev,
1080 &sensor_dev_attr_in1_min.dev_attr))
1081 || (err = device_create_file(dev,
1082 &sensor_dev_attr_in1_max.dev_attr))
1083 || (err = device_create_file(dev,
1084 &sensor_dev_attr_in1_alarm.dev_attr))
1085 || (err = device_create_file(dev,
1086 &sensor_dev_attr_in1_beep.dev_attr)))
1087 return err;
1088 }
1089 if (kind != as99127f && kind != w83781d && kind != w83783s) {
1090 if ((err = device_create_file(dev,
1091 &sensor_dev_attr_in7_input.dev_attr))
1092 || (err = device_create_file(dev,
1093 &sensor_dev_attr_in7_min.dev_attr))
1094 || (err = device_create_file(dev,
1095 &sensor_dev_attr_in7_max.dev_attr))
1096 || (err = device_create_file(dev,
1097 &sensor_dev_attr_in7_alarm.dev_attr))
1098 || (err = device_create_file(dev,
1099 &sensor_dev_attr_in7_beep.dev_attr))
1100 || (err = device_create_file(dev,
1101 &sensor_dev_attr_in8_input.dev_attr))
1102 || (err = device_create_file(dev,
1103 &sensor_dev_attr_in8_min.dev_attr))
1104 || (err = device_create_file(dev,
1105 &sensor_dev_attr_in8_max.dev_attr))
1106 || (err = device_create_file(dev,
1107 &sensor_dev_attr_in8_alarm.dev_attr))
1108 || (err = device_create_file(dev,
1109 &sensor_dev_attr_in8_beep.dev_attr)))
1110 return err;
1111 }
1112 if (kind != w83783s) {
1113 if ((err = device_create_file(dev,
1114 &sensor_dev_attr_temp3_input.dev_attr))
1115 || (err = device_create_file(dev,
1116 &sensor_dev_attr_temp3_max.dev_attr))
1117 || (err = device_create_file(dev,
1118 &sensor_dev_attr_temp3_max_hyst.dev_attr))
1119 || (err = device_create_file(dev,
1120 &sensor_dev_attr_temp3_alarm.dev_attr))
1121 || (err = device_create_file(dev,
1122 &sensor_dev_attr_temp3_beep.dev_attr)))
1123 return err;
1124
1125 if (kind != w83781d) {
1126 err = sysfs_chmod_file(&dev->kobj,
1127 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1128 S_IRUGO | S_IWUSR);
1129 if (err)
1130 return err;
1131 }
1132 }
1133
1134 if (kind != w83781d && kind != as99127f) {
1135 if ((err = device_create_file(dev,
1136 &sensor_dev_attr_pwm1.dev_attr))
1137 || (err = device_create_file(dev,
1138 &sensor_dev_attr_pwm2.dev_attr))
1139 || (err = device_create_file(dev, &dev_attr_pwm2_enable)))
1140 return err;
1141 }
1142 if (kind == w83782d && !is_isa) {
1143 if ((err = device_create_file(dev,
1144 &sensor_dev_attr_pwm3.dev_attr))
1145 || (err = device_create_file(dev,
1146 &sensor_dev_attr_pwm4.dev_attr)))
1147 return err;
1148 }
1149
1150 if (kind != as99127f && kind != w83781d) {
1151 if ((err = device_create_file(dev,
1152 &sensor_dev_attr_temp1_type.dev_attr))
1153 || (err = device_create_file(dev,
1154 &sensor_dev_attr_temp2_type.dev_attr)))
1155 return err;
1156 if (kind != w83783s) {
1157 if ((err = device_create_file(dev,
1158 &sensor_dev_attr_temp3_type.dev_attr)))
1159 return err;
1160 }
1161 }
1162
1163 if (is_isa) {
1164 err = device_create_file(&pdev->dev, &dev_attr_name);
1165 if (err)
1166 return err;
1167 }
1168
1169 return 0;
1170 }
1171
1172 static int
1173 w83781d_detect(struct i2c_adapter *adapter, int address, int kind)
1174 {
1175 int val1 = 0, val2;
1176 struct i2c_client *client;
1177 struct device *dev;
1178 struct w83781d_data *data;
1179 int err;
1180 const char *client_name = "";
1181 enum vendor { winbond, asus } vendid;
1182
1183 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1184 err = -EINVAL;
1185 goto ERROR1;
1186 }
1187
1188 /* OK. For now, we presume we have a valid client. We now create the
1189 client structure, even though we cannot fill it completely yet.
1190 But it allows us to access w83781d_{read,write}_value. */
1191
1192 if (!(data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL))) {
1193 err = -ENOMEM;
1194 goto ERROR1;
1195 }
1196
1197 client = &data->client;
1198 i2c_set_clientdata(client, data);
1199 client->addr = address;
1200 mutex_init(&data->lock);
1201 client->adapter = adapter;
1202 client->driver = &w83781d_driver;
1203 dev = &client->dev;
1204
1205 /* Now, we do the remaining detection. */
1206
1207 /* The w8378?d may be stuck in some other bank than bank 0. This may
1208 make reading other information impossible. Specify a force=... or
1209 force_*=... parameter, and the Winbond will be reset to the right
1210 bank. */
1211 if (kind < 0) {
1212 if (w83781d_read_value(data, W83781D_REG_CONFIG) & 0x80) {
1213 dev_dbg(&adapter->dev, "Detection of w83781d chip "
1214 "failed at step 3\n");
1215 err = -ENODEV;
1216 goto ERROR2;
1217 }
1218 val1 = w83781d_read_value(data, W83781D_REG_BANK);
1219 val2 = w83781d_read_value(data, W83781D_REG_CHIPMAN);
1220 /* Check for Winbond or Asus ID if in bank 0 */
1221 if ((!(val1 & 0x07)) &&
1222 (((!(val1 & 0x80)) && (val2 != 0xa3) && (val2 != 0xc3))
1223 || ((val1 & 0x80) && (val2 != 0x5c) && (val2 != 0x12)))) {
1224 dev_dbg(&adapter->dev, "Detection of w83781d chip "
1225 "failed at step 4\n");
1226 err = -ENODEV;
1227 goto ERROR2;
1228 }
1229 /* If Winbond SMBus, check address at 0x48.
1230 Asus doesn't support, except for as99127f rev.2 */
1231 if ((!(val1 & 0x80) && (val2 == 0xa3)) ||
1232 ((val1 & 0x80) && (val2 == 0x5c))) {
1233 if (w83781d_read_value
1234 (data, W83781D_REG_I2C_ADDR) != address) {
1235 dev_dbg(&adapter->dev, "Detection of w83781d "
1236 "chip failed at step 5\n");
1237 err = -ENODEV;
1238 goto ERROR2;
1239 }
1240 }
1241 }
1242
1243 /* We have either had a force parameter, or we have already detected the
1244 Winbond. Put it now into bank 0 and Vendor ID High Byte */
1245 w83781d_write_value(data, W83781D_REG_BANK,
1246 (w83781d_read_value(data, W83781D_REG_BANK)
1247 & 0x78) | 0x80);
1248
1249 /* Determine the chip type. */
1250 if (kind <= 0) {
1251 /* get vendor ID */
1252 val2 = w83781d_read_value(data, W83781D_REG_CHIPMAN);
1253 if (val2 == 0x5c)
1254 vendid = winbond;
1255 else if (val2 == 0x12)
1256 vendid = asus;
1257 else {
1258 dev_dbg(&adapter->dev, "w83781d chip vendor is "
1259 "neither Winbond nor Asus\n");
1260 err = -ENODEV;
1261 goto ERROR2;
1262 }
1263
1264 val1 = w83781d_read_value(data, W83781D_REG_WCHIPID);
1265 if ((val1 == 0x10 || val1 == 0x11) && vendid == winbond)
1266 kind = w83781d;
1267 else if (val1 == 0x30 && vendid == winbond)
1268 kind = w83782d;
1269 else if (val1 == 0x40 && vendid == winbond && address == 0x2d)
1270 kind = w83783s;
1271 else if (val1 == 0x21 && vendid == winbond)
1272 kind = w83627hf;
1273 else if (val1 == 0x31 && address >= 0x28)
1274 kind = as99127f;
1275 else {
1276 if (kind == 0)
1277 dev_warn(&adapter->dev, "Ignoring 'force' "
1278 "parameter for unknown chip at "
1279 "address 0x%02x\n", address);
1280 err = -EINVAL;
1281 goto ERROR2;
1282 }
1283 }
1284
1285 if (kind == w83781d) {
1286 client_name = "w83781d";
1287 } else if (kind == w83782d) {
1288 client_name = "w83782d";
1289 } else if (kind == w83783s) {
1290 client_name = "w83783s";
1291 } else if (kind == w83627hf) {
1292 client_name = "w83627hf";
1293 } else if (kind == as99127f) {
1294 client_name = "as99127f";
1295 }
1296
1297 /* Fill in the remaining client fields and put into the global list */
1298 strlcpy(client->name, client_name, I2C_NAME_SIZE);
1299 data->type = kind;
1300
1301 /* Tell the I2C layer a new client has arrived */
1302 if ((err = i2c_attach_client(client)))
1303 goto ERROR2;
1304
1305 /* attach secondary i2c lm75-like clients */
1306 if ((err = w83781d_detect_subclients(adapter, address,
1307 kind, client)))
1308 goto ERROR3;
1309
1310 /* Initialize the chip */
1311 w83781d_init_device(dev);
1312
1313 /* Register sysfs hooks */
1314 err = w83781d_create_files(dev, kind, 0);
1315 if (err)
1316 goto ERROR4;
1317
1318 data->hwmon_dev = hwmon_device_register(dev);
1319 if (IS_ERR(data->hwmon_dev)) {
1320 err = PTR_ERR(data->hwmon_dev);
1321 goto ERROR4;
1322 }
1323
1324 return 0;
1325
1326 ERROR4:
1327 sysfs_remove_group(&dev->kobj, &w83781d_group);
1328 sysfs_remove_group(&dev->kobj, &w83781d_group_opt);
1329
1330 if (data->lm75[1]) {
1331 i2c_detach_client(data->lm75[1]);
1332 kfree(data->lm75[1]);
1333 }
1334 if (data->lm75[0]) {
1335 i2c_detach_client(data->lm75[0]);
1336 kfree(data->lm75[0]);
1337 }
1338 ERROR3:
1339 i2c_detach_client(client);
1340 ERROR2:
1341 kfree(data);
1342 ERROR1:
1343 return err;
1344 }
1345
1346 static int
1347 w83781d_detach_client(struct i2c_client *client)
1348 {
1349 struct w83781d_data *data = i2c_get_clientdata(client);
1350 int err;
1351
1352 /* main client */
1353 if (data) {
1354 hwmon_device_unregister(data->hwmon_dev);
1355 sysfs_remove_group(&client->dev.kobj, &w83781d_group);
1356 sysfs_remove_group(&client->dev.kobj, &w83781d_group_opt);
1357 }
1358
1359 if ((err = i2c_detach_client(client)))
1360 return err;
1361
1362 /* main client */
1363 if (data)
1364 kfree(data);
1365
1366 /* subclient */
1367 else
1368 kfree(client);
1369
1370 return 0;
1371 }
1372
1373 static int __devinit
1374 w83781d_isa_probe(struct platform_device *pdev)
1375 {
1376 int err, reg;
1377 struct w83781d_data *data;
1378 struct resource *res;
1379 const char *name;
1380
1381 /* Reserve the ISA region */
1382 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1383 if (!request_region(res->start, W83781D_EXTENT, "w83781d")) {
1384 err = -EBUSY;
1385 goto exit;
1386 }
1387
1388 if (!(data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL))) {
1389 err = -ENOMEM;
1390 goto exit_release_region;
1391 }
1392 mutex_init(&data->lock);
1393 data->client.addr = res->start;
1394 i2c_set_clientdata(&data->client, data);
1395 platform_set_drvdata(pdev, data);
1396
1397 reg = w83781d_read_value(data, W83781D_REG_WCHIPID);
1398 switch (reg) {
1399 case 0x21:
1400 data->type = w83627hf;
1401 name = "w83627hf";
1402 break;
1403 case 0x30:
1404 data->type = w83782d;
1405 name = "w83782d";
1406 break;
1407 default:
1408 data->type = w83781d;
1409 name = "w83781d";
1410 }
1411 strlcpy(data->client.name, name, I2C_NAME_SIZE);
1412
1413 /* Initialize the W83781D chip */
1414 w83781d_init_device(&pdev->dev);
1415
1416 /* Register sysfs hooks */
1417 err = w83781d_create_files(&pdev->dev, data->type, 1);
1418 if (err)
1419 goto exit_remove_files;
1420
1421 data->hwmon_dev = hwmon_device_register(&pdev->dev);
1422 if (IS_ERR(data->hwmon_dev)) {
1423 err = PTR_ERR(data->hwmon_dev);
1424 goto exit_remove_files;
1425 }
1426
1427 return 0;
1428
1429 exit_remove_files:
1430 sysfs_remove_group(&pdev->dev.kobj, &w83781d_group);
1431 sysfs_remove_group(&pdev->dev.kobj, &w83781d_group_opt);
1432 device_remove_file(&pdev->dev, &dev_attr_name);
1433 kfree(data);
1434 exit_release_region:
1435 release_region(res->start, W83781D_EXTENT);
1436 exit:
1437 return err;
1438 }
1439
1440 static int __devexit
1441 w83781d_isa_remove(struct platform_device *pdev)
1442 {
1443 struct w83781d_data *data = platform_get_drvdata(pdev);
1444
1445 hwmon_device_unregister(data->hwmon_dev);
1446 sysfs_remove_group(&pdev->dev.kobj, &w83781d_group);
1447 sysfs_remove_group(&pdev->dev.kobj, &w83781d_group_opt);
1448 device_remove_file(&pdev->dev, &dev_attr_name);
1449 release_region(data->client.addr, W83781D_EXTENT);
1450 kfree(data);
1451
1452 return 0;
1453 }
1454
1455 /* The SMBus locks itself, usually, but nothing may access the Winbond between
1456 bank switches. ISA access must always be locked explicitly!
1457 We ignore the W83781D BUSY flag at this moment - it could lead to deadlocks,
1458 would slow down the W83781D access and should not be necessary.
1459 There are some ugly typecasts here, but the good news is - they should
1460 nowhere else be necessary! */
1461 static int
1462 w83781d_read_value(struct w83781d_data *data, u16 reg)
1463 {
1464 struct i2c_client *client = &data->client;
1465 int res, word_sized, bank;
1466 struct i2c_client *cl;
1467
1468 mutex_lock(&data->lock);
1469 if (!client->driver) { /* ISA device */
1470 word_sized = (((reg & 0xff00) == 0x100)
1471 || ((reg & 0xff00) == 0x200))
1472 && (((reg & 0x00ff) == 0x50)
1473 || ((reg & 0x00ff) == 0x53)
1474 || ((reg & 0x00ff) == 0x55));
1475 if (reg & 0xff00) {
1476 outb_p(W83781D_REG_BANK,
1477 client->addr + W83781D_ADDR_REG_OFFSET);
1478 outb_p(reg >> 8,
1479 client->addr + W83781D_DATA_REG_OFFSET);
1480 }
1481 outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET);
1482 res = inb_p(client->addr + W83781D_DATA_REG_OFFSET);
1483 if (word_sized) {
1484 outb_p((reg & 0xff) + 1,
1485 client->addr + W83781D_ADDR_REG_OFFSET);
1486 res =
1487 (res << 8) + inb_p(client->addr +
1488 W83781D_DATA_REG_OFFSET);
1489 }
1490 if (reg & 0xff00) {
1491 outb_p(W83781D_REG_BANK,
1492 client->addr + W83781D_ADDR_REG_OFFSET);
1493 outb_p(0, client->addr + W83781D_DATA_REG_OFFSET);
1494 }
1495 } else {
1496 bank = (reg >> 8) & 0x0f;
1497 if (bank > 2)
1498 /* switch banks */
1499 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1500 bank);
1501 if (bank == 0 || bank > 2) {
1502 res = i2c_smbus_read_byte_data(client, reg & 0xff);
1503 } else {
1504 /* switch to subclient */
1505 cl = data->lm75[bank - 1];
1506 /* convert from ISA to LM75 I2C addresses */
1507 switch (reg & 0xff) {
1508 case 0x50: /* TEMP */
1509 res = swab16(i2c_smbus_read_word_data(cl, 0));
1510 break;
1511 case 0x52: /* CONFIG */
1512 res = i2c_smbus_read_byte_data(cl, 1);
1513 break;
1514 case 0x53: /* HYST */
1515 res = swab16(i2c_smbus_read_word_data(cl, 2));
1516 break;
1517 case 0x55: /* OVER */
1518 default:
1519 res = swab16(i2c_smbus_read_word_data(cl, 3));
1520 break;
1521 }
1522 }
1523 if (bank > 2)
1524 i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1525 }
1526 mutex_unlock(&data->lock);
1527 return res;
1528 }
1529
1530 static int
1531 w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
1532 {
1533 struct i2c_client *client = &data->client;
1534 int word_sized, bank;
1535 struct i2c_client *cl;
1536
1537 mutex_lock(&data->lock);
1538 if (!client->driver) { /* ISA device */
1539 word_sized = (((reg & 0xff00) == 0x100)
1540 || ((reg & 0xff00) == 0x200))
1541 && (((reg & 0x00ff) == 0x53)
1542 || ((reg & 0x00ff) == 0x55));
1543 if (reg & 0xff00) {
1544 outb_p(W83781D_REG_BANK,
1545 client->addr + W83781D_ADDR_REG_OFFSET);
1546 outb_p(reg >> 8,
1547 client->addr + W83781D_DATA_REG_OFFSET);
1548 }
1549 outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET);
1550 if (word_sized) {
1551 outb_p(value >> 8,
1552 client->addr + W83781D_DATA_REG_OFFSET);
1553 outb_p((reg & 0xff) + 1,
1554 client->addr + W83781D_ADDR_REG_OFFSET);
1555 }
1556 outb_p(value & 0xff, client->addr + W83781D_DATA_REG_OFFSET);
1557 if (reg & 0xff00) {
1558 outb_p(W83781D_REG_BANK,
1559 client->addr + W83781D_ADDR_REG_OFFSET);
1560 outb_p(0, client->addr + W83781D_DATA_REG_OFFSET);
1561 }
1562 } else {
1563 bank = (reg >> 8) & 0x0f;
1564 if (bank > 2)
1565 /* switch banks */
1566 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1567 bank);
1568 if (bank == 0 || bank > 2) {
1569 i2c_smbus_write_byte_data(client, reg & 0xff,
1570 value & 0xff);
1571 } else {
1572 /* switch to subclient */
1573 cl = data->lm75[bank - 1];
1574 /* convert from ISA to LM75 I2C addresses */
1575 switch (reg & 0xff) {
1576 case 0x52: /* CONFIG */
1577 i2c_smbus_write_byte_data(cl, 1, value & 0xff);
1578 break;
1579 case 0x53: /* HYST */
1580 i2c_smbus_write_word_data(cl, 2, swab16(value));
1581 break;
1582 case 0x55: /* OVER */
1583 i2c_smbus_write_word_data(cl, 3, swab16(value));
1584 break;
1585 }
1586 }
1587 if (bank > 2)
1588 i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1589 }
1590 mutex_unlock(&data->lock);
1591 return 0;
1592 }
1593
1594 static void
1595 w83781d_init_device(struct device *dev)
1596 {
1597 struct w83781d_data *data = dev_get_drvdata(dev);
1598 int i, p;
1599 int type = data->type;
1600 u8 tmp;
1601
1602 if (type == w83627hf)
1603 dev_info(dev, "The W83627HF chip is better supported by the "
1604 "w83627hf driver, support will be dropped from the "
1605 "w83781d driver soon\n");
1606
1607 if (reset && type != as99127f) { /* this resets registers we don't have
1608 documentation for on the as99127f */
1609 /* Resetting the chip has been the default for a long time,
1610 but it causes the BIOS initializations (fan clock dividers,
1611 thermal sensor types...) to be lost, so it is now optional.
1612 It might even go away if nobody reports it as being useful,
1613 as I see very little reason why this would be needed at
1614 all. */
1615 dev_info(dev, "If reset=1 solved a problem you were "
1616 "having, please report!\n");
1617
1618 /* save these registers */
1619 i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
1620 p = w83781d_read_value(data, W83781D_REG_PWMCLK12);
1621 /* Reset all except Watchdog values and last conversion values
1622 This sets fan-divs to 2, among others */
1623 w83781d_write_value(data, W83781D_REG_CONFIG, 0x80);
1624 /* Restore the registers and disable power-on abnormal beep.
1625 This saves FAN 1/2/3 input/output values set by BIOS. */
1626 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
1627 w83781d_write_value(data, W83781D_REG_PWMCLK12, p);
1628 /* Disable master beep-enable (reset turns it on).
1629 Individual beep_mask should be reset to off but for some reason
1630 disabling this bit helps some people not get beeped */
1631 w83781d_write_value(data, W83781D_REG_BEEP_INTS2, 0);
1632 }
1633
1634 /* Disable power-on abnormal beep, as advised by the datasheet.
1635 Already done if reset=1. */
1636 if (init && !reset && type != as99127f) {
1637 i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
1638 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
1639 }
1640
1641 data->vrm = vid_which_vrm();
1642
1643 if ((type != w83781d) && (type != as99127f)) {
1644 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
1645 for (i = 1; i <= 3; i++) {
1646 if (!(tmp & BIT_SCFG1[i - 1])) {
1647 data->sens[i - 1] = 4;
1648 } else {
1649 if (w83781d_read_value
1650 (data,
1651 W83781D_REG_SCFG2) & BIT_SCFG2[i - 1])
1652 data->sens[i - 1] = 1;
1653 else
1654 data->sens[i - 1] = 2;
1655 }
1656 if (type == w83783s && i == 2)
1657 break;
1658 }
1659 }
1660
1661 if (init && type != as99127f) {
1662 /* Enable temp2 */
1663 tmp = w83781d_read_value(data, W83781D_REG_TEMP2_CONFIG);
1664 if (tmp & 0x01) {
1665 dev_warn(dev, "Enabling temp2, readings "
1666 "might not make sense\n");
1667 w83781d_write_value(data, W83781D_REG_TEMP2_CONFIG,
1668 tmp & 0xfe);
1669 }
1670
1671 /* Enable temp3 */
1672 if (type != w83783s) {
1673 tmp = w83781d_read_value(data,
1674 W83781D_REG_TEMP3_CONFIG);
1675 if (tmp & 0x01) {
1676 dev_warn(dev, "Enabling temp3, "
1677 "readings might not make sense\n");
1678 w83781d_write_value(data,
1679 W83781D_REG_TEMP3_CONFIG, tmp & 0xfe);
1680 }
1681 }
1682 }
1683
1684 /* Start monitoring */
1685 w83781d_write_value(data, W83781D_REG_CONFIG,
1686 (w83781d_read_value(data,
1687 W83781D_REG_CONFIG) & 0xf7)
1688 | 0x01);
1689
1690 /* A few vars need to be filled upon startup */
1691 for (i = 0; i < 3; i++) {
1692 data->fan_min[i] = w83781d_read_value(data,
1693 W83781D_REG_FAN_MIN(i));
1694 }
1695
1696 mutex_init(&data->update_lock);
1697 }
1698
1699 static struct w83781d_data *w83781d_update_device(struct device *dev)
1700 {
1701 struct w83781d_data *data = dev_get_drvdata(dev);
1702 struct i2c_client *client = &data->client;
1703 int i;
1704
1705 mutex_lock(&data->update_lock);
1706
1707 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
1708 || !data->valid) {
1709 dev_dbg(dev, "Starting device update\n");
1710
1711 for (i = 0; i <= 8; i++) {
1712 if (data->type == w83783s && i == 1)
1713 continue; /* 783S has no in1 */
1714 data->in[i] =
1715 w83781d_read_value(data, W83781D_REG_IN(i));
1716 data->in_min[i] =
1717 w83781d_read_value(data, W83781D_REG_IN_MIN(i));
1718 data->in_max[i] =
1719 w83781d_read_value(data, W83781D_REG_IN_MAX(i));
1720 if ((data->type != w83782d)
1721 && (data->type != w83627hf) && (i == 6))
1722 break;
1723 }
1724 for (i = 0; i < 3; i++) {
1725 data->fan[i] =
1726 w83781d_read_value(data, W83781D_REG_FAN(i));
1727 data->fan_min[i] =
1728 w83781d_read_value(data, W83781D_REG_FAN_MIN(i));
1729 }
1730 if (data->type != w83781d && data->type != as99127f) {
1731 for (i = 0; i < 4; i++) {
1732 data->pwm[i] =
1733 w83781d_read_value(data,
1734 W83781D_REG_PWM[i]);
1735 if ((data->type != w83782d || !client->driver)
1736 && i == 1)
1737 break;
1738 }
1739 /* Only PWM2 can be disabled */
1740 data->pwm2_enable = (w83781d_read_value(data,
1741 W83781D_REG_PWMCLK12) & 0x08) >> 3;
1742 }
1743
1744 data->temp = w83781d_read_value(data, W83781D_REG_TEMP(1));
1745 data->temp_max =
1746 w83781d_read_value(data, W83781D_REG_TEMP_OVER(1));
1747 data->temp_max_hyst =
1748 w83781d_read_value(data, W83781D_REG_TEMP_HYST(1));
1749 data->temp_add[0] =
1750 w83781d_read_value(data, W83781D_REG_TEMP(2));
1751 data->temp_max_add[0] =
1752 w83781d_read_value(data, W83781D_REG_TEMP_OVER(2));
1753 data->temp_max_hyst_add[0] =
1754 w83781d_read_value(data, W83781D_REG_TEMP_HYST(2));
1755 if (data->type != w83783s) {
1756 data->temp_add[1] =
1757 w83781d_read_value(data, W83781D_REG_TEMP(3));
1758 data->temp_max_add[1] =
1759 w83781d_read_value(data,
1760 W83781D_REG_TEMP_OVER(3));
1761 data->temp_max_hyst_add[1] =
1762 w83781d_read_value(data,
1763 W83781D_REG_TEMP_HYST(3));
1764 }
1765 i = w83781d_read_value(data, W83781D_REG_VID_FANDIV);
1766 data->vid = i & 0x0f;
1767 data->vid |= (w83781d_read_value(data,
1768 W83781D_REG_CHIPID) & 0x01) << 4;
1769 data->fan_div[0] = (i >> 4) & 0x03;
1770 data->fan_div[1] = (i >> 6) & 0x03;
1771 data->fan_div[2] = (w83781d_read_value(data,
1772 W83781D_REG_PIN) >> 6) & 0x03;
1773 if ((data->type != w83781d) && (data->type != as99127f)) {
1774 i = w83781d_read_value(data, W83781D_REG_VBAT);
1775 data->fan_div[0] |= (i >> 3) & 0x04;
1776 data->fan_div[1] |= (i >> 4) & 0x04;
1777 data->fan_div[2] |= (i >> 5) & 0x04;
1778 }
1779 if ((data->type == w83782d) || (data->type == w83627hf)) {
1780 data->alarms = w83781d_read_value(data,
1781 W83782D_REG_ALARM1)
1782 | (w83781d_read_value(data,
1783 W83782D_REG_ALARM2) << 8)
1784 | (w83781d_read_value(data,
1785 W83782D_REG_ALARM3) << 16);
1786 } else if (data->type == w83783s) {
1787 data->alarms = w83781d_read_value(data,
1788 W83782D_REG_ALARM1)
1789 | (w83781d_read_value(data,
1790 W83782D_REG_ALARM2) << 8);
1791 } else {
1792 /* No real-time status registers, fall back to
1793 interrupt status registers */
1794 data->alarms = w83781d_read_value(data,
1795 W83781D_REG_ALARM1)
1796 | (w83781d_read_value(data,
1797 W83781D_REG_ALARM2) << 8);
1798 }
1799 i = w83781d_read_value(data, W83781D_REG_BEEP_INTS2);
1800 data->beep_enable = i >> 7;
1801 data->beep_mask = ((i & 0x7f) << 8) +
1802 w83781d_read_value(data, W83781D_REG_BEEP_INTS1);
1803 if ((data->type != w83781d) && (data->type != as99127f)) {
1804 data->beep_mask |=
1805 w83781d_read_value(data,
1806 W83781D_REG_BEEP_INTS3) << 16;
1807 }
1808 data->last_updated = jiffies;
1809 data->valid = 1;
1810 }
1811
1812 mutex_unlock(&data->update_lock);
1813
1814 return data;
1815 }
1816
1817 /* return 1 if a supported chip is found, 0 otherwise */
1818 static int __init
1819 w83781d_isa_found(unsigned short address)
1820 {
1821 int val, save, found = 0;
1822
1823 if (!request_region(address, W83781D_EXTENT, "w83781d"))
1824 return 0;
1825
1826 #define REALLY_SLOW_IO
1827 /* We need the timeouts for at least some W83781D-like
1828 chips. But only if we read 'undefined' registers. */
1829 val = inb_p(address + 1);
1830 if (inb_p(address + 2) != val
1831 || inb_p(address + 3) != val
1832 || inb_p(address + 7) != val) {
1833 pr_debug("w83781d: Detection failed at step 1\n");
1834 goto release;
1835 }
1836 #undef REALLY_SLOW_IO
1837
1838 /* We should be able to change the 7 LSB of the address port. The
1839 MSB (busy flag) should be clear initially, set after the write. */
1840 save = inb_p(address + W83781D_ADDR_REG_OFFSET);
1841 if (save & 0x80) {
1842 pr_debug("w83781d: Detection failed at step 2\n");
1843 goto release;
1844 }
1845 val = ~save & 0x7f;
1846 outb_p(val, address + W83781D_ADDR_REG_OFFSET);
1847 if (inb_p(address + W83781D_ADDR_REG_OFFSET) != (val | 0x80)) {
1848 outb_p(save, address + W83781D_ADDR_REG_OFFSET);
1849 pr_debug("w83781d: Detection failed at step 3\n");
1850 goto release;
1851 }
1852
1853 /* We found a device, now see if it could be a W83781D */
1854 outb_p(W83781D_REG_CONFIG, address + W83781D_ADDR_REG_OFFSET);
1855 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1856 if (val & 0x80) {
1857 pr_debug("w83781d: Detection failed at step 4\n");
1858 goto release;
1859 }
1860 outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET);
1861 save = inb_p(address + W83781D_DATA_REG_OFFSET);
1862 outb_p(W83781D_REG_CHIPMAN, address + W83781D_ADDR_REG_OFFSET);
1863 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1864 if ((!(save & 0x80) && (val != 0xa3))
1865 || ((save & 0x80) && (val != 0x5c))) {
1866 pr_debug("w83781d: Detection failed at step 5\n");
1867 goto release;
1868 }
1869 outb_p(W83781D_REG_I2C_ADDR, address + W83781D_ADDR_REG_OFFSET);
1870 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1871 if (val < 0x03 || val > 0x77) { /* Not a valid I2C address */
1872 pr_debug("w83781d: Detection failed at step 6\n");
1873 goto release;
1874 }
1875
1876 /* The busy flag should be clear again */
1877 if (inb_p(address + W83781D_ADDR_REG_OFFSET) & 0x80) {
1878 pr_debug("w83781d: Detection failed at step 7\n");
1879 goto release;
1880 }
1881
1882 /* Determine the chip type */
1883 outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET);
1884 save = inb_p(address + W83781D_DATA_REG_OFFSET);
1885 outb_p(save & 0xf8, address + W83781D_DATA_REG_OFFSET);
1886 outb_p(W83781D_REG_WCHIPID, address + W83781D_ADDR_REG_OFFSET);
1887 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1888 if ((val & 0xfe) == 0x10 /* W83781D */
1889 || val == 0x30 /* W83782D */
1890 || val == 0x21) /* W83627HF */
1891 found = 1;
1892
1893 if (found)
1894 pr_info("w83781d: Found a %s chip at %#x\n",
1895 val == 0x21 ? "W83627HF" :
1896 val == 0x30 ? "W83782D" : "W83781D", (int)address);
1897
1898 release:
1899 release_region(address, W83781D_EXTENT);
1900 return found;
1901 }
1902
1903 static int __init
1904 w83781d_isa_device_add(unsigned short address)
1905 {
1906 struct resource res = {
1907 .start = address,
1908 .end = address + W83781D_EXTENT - 1,
1909 .name = "w83781d",
1910 .flags = IORESOURCE_IO,
1911 };
1912 int err;
1913
1914 pdev = platform_device_alloc("w83781d", address);
1915 if (!pdev) {
1916 err = -ENOMEM;
1917 printk(KERN_ERR "w83781d: Device allocation failed\n");
1918 goto exit;
1919 }
1920
1921 err = platform_device_add_resources(pdev, &res, 1);
1922 if (err) {
1923 printk(KERN_ERR "w83781d: Device resource addition failed "
1924 "(%d)\n", err);
1925 goto exit_device_put;
1926 }
1927
1928 err = platform_device_add(pdev);
1929 if (err) {
1930 printk(KERN_ERR "w83781d: Device addition failed (%d)\n",
1931 err);
1932 goto exit_device_put;
1933 }
1934
1935 return 0;
1936
1937 exit_device_put:
1938 platform_device_put(pdev);
1939 exit:
1940 pdev = NULL;
1941 return err;
1942 }
1943
1944 static int __init
1945 sensors_w83781d_init(void)
1946 {
1947 int res;
1948
1949 res = i2c_add_driver(&w83781d_driver);
1950 if (res)
1951 goto exit;
1952
1953 if (w83781d_isa_found(isa_address)) {
1954 res = platform_driver_register(&w83781d_isa_driver);
1955 if (res)
1956 goto exit_unreg_i2c_driver;
1957
1958 /* Sets global pdev as a side effect */
1959 res = w83781d_isa_device_add(isa_address);
1960 if (res)
1961 goto exit_unreg_isa_driver;
1962 }
1963
1964 return 0;
1965
1966 exit_unreg_isa_driver:
1967 platform_driver_unregister(&w83781d_isa_driver);
1968 exit_unreg_i2c_driver:
1969 i2c_del_driver(&w83781d_driver);
1970 exit:
1971 return res;
1972 }
1973
1974 static void __exit
1975 sensors_w83781d_exit(void)
1976 {
1977 if (pdev) {
1978 platform_device_unregister(pdev);
1979 platform_driver_unregister(&w83781d_isa_driver);
1980 }
1981 i2c_del_driver(&w83781d_driver);
1982 }
1983
1984 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
1985 "Philip Edelbrock <phil@netroedge.com>, "
1986 "and Mark Studebaker <mdsxyz123@yahoo.com>");
1987 MODULE_DESCRIPTION("W83781D driver");
1988 MODULE_LICENSE("GPL");
1989
1990 module_init(sensors_w83781d_init);
1991 module_exit(sensors_w83781d_exit);
Support for the Chinese Samsung S3C2440 based development boards