2 w83781d.c - Part of lm_sensors, Linux kernel modules for hardware
4 Copyright (c) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>,
5 Philip Edelbrock <phil@netroedge.com>,
6 and Mark Studebaker <mdsxyz123@yahoo.com>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 Supports following chips:
26 Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
27 as99127f 7 3 0 3 0x31 0x12c3 yes no
28 as99127f rev.2 (type_name = as99127f) 0x31 0x5ca3 yes no
29 w83781d 7 3 0 3 0x10-1 0x5ca3 yes yes
30 w83627hf 9 3 2 3 0x21 0x5ca3 yes yes(LPC)
31 w83782d 9 3 2-4 3 0x30 0x5ca3 yes yes
32 w83783s 5-6 3 2 1-2 0x40 0x5ca3 yes no
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/i2c-isa.h>
42 #include <linux/hwmon.h>
43 #include <linux/hwmon-vid.h>
44 #include <linux/err.h>
45 #include <linux/mutex.h>
49 /* Addresses to scan */
50 static unsigned short normal_i2c[] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25,
51 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
52 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
53 static unsigned short isa_address = 0x290;
55 /* Insmod parameters */
56 I2C_CLIENT_INSMOD_5(w83781d, w83782d, w83783s, w83627hf, as99127f);
57 I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
58 "{bus, clientaddr, subclientaddr1, subclientaddr2}");
61 module_param(init, bool, 0);
62 MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization");
64 /* Constants specified below */
66 /* Length of ISA address segment */
67 #define W83781D_EXTENT 8
69 /* Where are the ISA address/data registers relative to the base address */
70 #define W83781D_ADDR_REG_OFFSET 5
71 #define W83781D_DATA_REG_OFFSET 6
73 /* The W83781D registers */
74 /* The W83782D registers for nr=7,8 are in bank 5 */
75 #define W83781D_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
76 (0x554 + (((nr) - 7) * 2)))
77 #define W83781D_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
78 (0x555 + (((nr) - 7) * 2)))
79 #define W83781D_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
82 #define W83781D_REG_FAN_MIN(nr) (0x3a + (nr))
83 #define W83781D_REG_FAN(nr) (0x27 + (nr))
85 #define W83781D_REG_BANK 0x4E
86 #define W83781D_REG_TEMP2_CONFIG 0x152
87 #define W83781D_REG_TEMP3_CONFIG 0x252
88 #define W83781D_REG_TEMP(nr) ((nr == 3) ? (0x0250) : \
89 ((nr == 2) ? (0x0150) : \
91 #define W83781D_REG_TEMP_HYST(nr) ((nr == 3) ? (0x253) : \
92 ((nr == 2) ? (0x153) : \
94 #define W83781D_REG_TEMP_OVER(nr) ((nr == 3) ? (0x255) : \
95 ((nr == 2) ? (0x155) : \
98 #define W83781D_REG_CONFIG 0x40
100 /* Interrupt status (W83781D, AS99127F) */
101 #define W83781D_REG_ALARM1 0x41
102 #define W83781D_REG_ALARM2 0x42
104 /* Real-time status (W83782D, W83783S, W83627HF) */
105 #define W83782D_REG_ALARM1 0x459
106 #define W83782D_REG_ALARM2 0x45A
107 #define W83782D_REG_ALARM3 0x45B
109 #define W83781D_REG_BEEP_CONFIG 0x4D
110 #define W83781D_REG_BEEP_INTS1 0x56
111 #define W83781D_REG_BEEP_INTS2 0x57
112 #define W83781D_REG_BEEP_INTS3 0x453 /* not on W83781D */
114 #define W83781D_REG_VID_FANDIV 0x47
116 #define W83781D_REG_CHIPID 0x49
117 #define W83781D_REG_WCHIPID 0x58
118 #define W83781D_REG_CHIPMAN 0x4F
119 #define W83781D_REG_PIN 0x4B
122 #define W83781D_REG_VBAT 0x5D
124 /* PWM 782D (1-4) and 783S (1-2) only */
125 #define W83781D_REG_PWM1 0x5B /* 782d and 783s/627hf datasheets disagree */
126 /* on which is which; */
127 #define W83781D_REG_PWM2 0x5A /* We follow the 782d convention here, */
128 /* However 782d is probably wrong. */
129 #define W83781D_REG_PWM3 0x5E
130 #define W83781D_REG_PWM4 0x5F
131 #define W83781D_REG_PWMCLK12 0x5C
132 #define W83781D_REG_PWMCLK34 0x45C
133 static const u8 regpwm[] = { W83781D_REG_PWM1, W83781D_REG_PWM2,
134 W83781D_REG_PWM3, W83781D_REG_PWM4
137 #define W83781D_REG_PWM(nr) (regpwm[(nr) - 1])
139 #define W83781D_REG_I2C_ADDR 0x48
140 #define W83781D_REG_I2C_SUBADDR 0x4A
142 /* The following are undocumented in the data sheets however we
143 received the information in an email from Winbond tech support */
144 /* Sensor selection - not on 781d */
145 #define W83781D_REG_SCFG1 0x5D
146 static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 };
148 #define W83781D_REG_SCFG2 0x59
149 static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 };
151 #define W83781D_DEFAULT_BETA 3435
153 /* RT Table registers */
154 #define W83781D_REG_RT_IDX 0x50
155 #define W83781D_REG_RT_VAL 0x51
157 /* Conversions. Rounding and limit checking is only done on the TO_REG
158 variants. Note that you should be a bit careful with which arguments
159 these macros are called: arguments may be evaluated more than once.
160 Fixing this is just not worth it. */
161 #define IN_TO_REG(val) (SENSORS_LIMIT((((val) * 10 + 8)/16),0,255))
162 #define IN_FROM_REG(val) (((val) * 16) / 10)
165 FAN_TO_REG(long rpm, int div)
169 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
170 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
173 #define FAN_FROM_REG(val,div) ((val) == 0 ? -1 : \
174 ((val) == 255 ? 0 : \
175 1350000 / ((val) * (div))))
177 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
178 : (val)) / 1000, 0, 0xff))
179 #define TEMP_FROM_REG(val) (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
181 #define PWM_FROM_REG(val) (val)
182 #define PWM_TO_REG(val) (SENSORS_LIMIT((val),0,255))
183 #define BEEP_MASK_FROM_REG(val,type) ((type) == as99127f ? \
184 (val) ^ 0x7fff : (val))
185 #define BEEP_MASK_TO_REG(val,type) ((type) == as99127f ? \
186 (~(val)) & 0x7fff : (val) & 0xffffff)
188 #define BEEP_ENABLE_TO_REG(val) ((val) ? 1 : 0)
189 #define BEEP_ENABLE_FROM_REG(val) ((val) ? 1 : 0)
191 #define DIV_FROM_REG(val) (1 << (val))
194 DIV_TO_REG(long val, enum chips type)
197 val = SENSORS_LIMIT(val, 1,
199 || type == as99127f) ? 8 : 128)) >> 1;
200 for (i = 0; i < 7; i++) {
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
219 /* This module may seem overly long and complicated. In fact, it is not so
220 bad. Quite a lot of bookkeeping is done. A real driver can often cut
223 /* For each registered W83781D, we need to keep some data in memory. That
224 data is pointed to by w83781d_list[NR]->data. The structure itself is
225 dynamically allocated, at the same time when a new w83781d client is
227 struct w83781d_data {
228 struct i2c_client client;
229 struct class_device *class_dev;
233 struct mutex update_lock;
234 char valid; /* !=0 if following fields are valid */
235 unsigned long last_updated; /* In jiffies */
237 struct i2c_client *lm75[2]; /* for secondary I2C addresses */
238 /* array of 2 pointers to subclients */
240 u8 in[9]; /* Register value - 8 & 9 for 782D only */
241 u8 in_max[9]; /* Register value - 8 & 9 for 782D only */
242 u8 in_min[9]; /* Register value - 8 & 9 for 782D only */
243 u8 fan[3]; /* Register value */
244 u8 fan_min[3]; /* Register value */
246 u8 temp_max; /* Register value */
247 u8 temp_max_hyst; /* Register value */
248 u16 temp_add[2]; /* Register value */
249 u16 temp_max_add[2]; /* Register value */
250 u16 temp_max_hyst_add[2]; /* Register value */
251 u8 fan_div[3]; /* Register encoding, shifted right */
252 u8 vid; /* Register encoding, combined */
253 u32 alarms; /* Register encoding, combined */
254 u32 beep_mask; /* Register encoding, combined */
255 u8 beep_enable; /* Boolean */
256 u8 pwm[4]; /* Register value */
257 u8 pwmenable[4]; /* Boolean */
258 u16 sens[3]; /* 782D/783S only.
259 1 = pentium diode; 2 = 3904 diode;
260 3000-5000 = thermistor beta.
262 Other Betas unimplemented */
266 static int w83781d_attach_adapter(struct i2c_adapter *adapter);
267 static int w83781d_isa_attach_adapter(struct i2c_adapter *adapter);
268 static int w83781d_detect(struct i2c_adapter *adapter, int address, int kind);
269 static int w83781d_detach_client(struct i2c_client *client);
271 static int w83781d_read_value(struct i2c_client *client, u16 register);
272 static int w83781d_write_value(struct i2c_client *client, u16 register,
274 static struct w83781d_data *w83781d_update_device(struct device *dev);
275 static void w83781d_init_client(struct i2c_client *client);
277 static struct i2c_driver w83781d_driver = {
281 .id = I2C_DRIVERID_W83781D,
282 .attach_adapter = w83781d_attach_adapter,
283 .detach_client = w83781d_detach_client,
286 static struct i2c_driver w83781d_isa_driver = {
288 .name = "w83781d-isa",
290 .attach_adapter = w83781d_isa_attach_adapter,
291 .detach_client = w83781d_detach_client,
295 /* following are the sysfs callback functions */
296 #define show_in_reg(reg) \
297 static ssize_t show_##reg (struct device *dev, char *buf, int nr) \
299 struct w83781d_data *data = w83781d_update_device(dev); \
300 return sprintf(buf,"%ld\n", (long)IN_FROM_REG(data->reg[nr] * 10)); \
306 #define store_in_reg(REG, reg) \
307 static ssize_t store_in_##reg (struct device *dev, const char *buf, size_t count, int nr) \
309 struct i2c_client *client = to_i2c_client(dev); \
310 struct w83781d_data *data = i2c_get_clientdata(client); \
313 val = simple_strtoul(buf, NULL, 10) / 10; \
315 mutex_lock(&data->update_lock); \
316 data->in_##reg[nr] = IN_TO_REG(val); \
317 w83781d_write_value(client, W83781D_REG_IN_##REG(nr), data->in_##reg[nr]); \
319 mutex_unlock(&data->update_lock); \
322 store_in_reg(MIN, min);
323 store_in_reg(MAX, max);
325 #define sysfs_in_offset(offset) \
327 show_regs_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
329 return show_in(dev, buf, offset); \
331 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_regs_in_##offset, NULL);
333 #define sysfs_in_reg_offset(reg, offset) \
334 static ssize_t show_regs_in_##reg##offset (struct device *dev, struct device_attribute *attr, char *buf) \
336 return show_in_##reg (dev, buf, offset); \
338 static ssize_t store_regs_in_##reg##offset (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
340 return store_in_##reg (dev, buf, count, offset); \
342 static DEVICE_ATTR(in##offset##_##reg, S_IRUGO| S_IWUSR, show_regs_in_##reg##offset, store_regs_in_##reg##offset);
344 #define sysfs_in_offsets(offset) \
345 sysfs_in_offset(offset); \
346 sysfs_in_reg_offset(min, offset); \
347 sysfs_in_reg_offset(max, offset);
359 #define device_create_file_in(client, offset) \
361 device_create_file(&client->dev, &dev_attr_in##offset##_input); \
362 device_create_file(&client->dev, &dev_attr_in##offset##_min); \
363 device_create_file(&client->dev, &dev_attr_in##offset##_max); \
366 #define show_fan_reg(reg) \
367 static ssize_t show_##reg (struct device *dev, char *buf, int nr) \
369 struct w83781d_data *data = w83781d_update_device(dev); \
370 return sprintf(buf,"%ld\n", \
371 FAN_FROM_REG(data->reg[nr-1], (long)DIV_FROM_REG(data->fan_div[nr-1]))); \
374 show_fan_reg(fan_min);
377 store_fan_min(struct device *dev, const char *buf, size_t count, int nr)
379 struct i2c_client *client = to_i2c_client(dev);
380 struct w83781d_data *data = i2c_get_clientdata(client);
383 val = simple_strtoul(buf, NULL, 10);
385 mutex_lock(&data->update_lock);
386 data->fan_min[nr - 1] =
387 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr - 1]));
388 w83781d_write_value(client, W83781D_REG_FAN_MIN(nr),
389 data->fan_min[nr - 1]);
391 mutex_unlock(&data->update_lock);
395 #define sysfs_fan_offset(offset) \
396 static ssize_t show_regs_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
398 return show_fan(dev, buf, offset); \
400 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_regs_fan_##offset, NULL);
402 #define sysfs_fan_min_offset(offset) \
403 static ssize_t show_regs_fan_min##offset (struct device *dev, struct device_attribute *attr, char *buf) \
405 return show_fan_min(dev, buf, offset); \
407 static ssize_t store_regs_fan_min##offset (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
409 return store_fan_min(dev, buf, count, offset); \
411 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, show_regs_fan_min##offset, store_regs_fan_min##offset);
414 sysfs_fan_min_offset(1);
416 sysfs_fan_min_offset(2);
418 sysfs_fan_min_offset(3);
420 #define device_create_file_fan(client, offset) \
422 device_create_file(&client->dev, &dev_attr_fan##offset##_input); \
423 device_create_file(&client->dev, &dev_attr_fan##offset##_min); \
426 #define show_temp_reg(reg) \
427 static ssize_t show_##reg (struct device *dev, char *buf, int nr) \
429 struct w83781d_data *data = w83781d_update_device(dev); \
430 if (nr >= 2) { /* TEMP2 and TEMP3 */ \
431 return sprintf(buf,"%d\n", \
432 LM75_TEMP_FROM_REG(data->reg##_add[nr-2])); \
433 } else { /* TEMP1 */ \
434 return sprintf(buf,"%ld\n", (long)TEMP_FROM_REG(data->reg)); \
438 show_temp_reg(temp_max);
439 show_temp_reg(temp_max_hyst);
441 #define store_temp_reg(REG, reg) \
442 static ssize_t store_temp_##reg (struct device *dev, const char *buf, size_t count, int nr) \
444 struct i2c_client *client = to_i2c_client(dev); \
445 struct w83781d_data *data = i2c_get_clientdata(client); \
448 val = simple_strtol(buf, NULL, 10); \
450 mutex_lock(&data->update_lock); \
452 if (nr >= 2) { /* TEMP2 and TEMP3 */ \
453 data->temp_##reg##_add[nr-2] = LM75_TEMP_TO_REG(val); \
454 w83781d_write_value(client, W83781D_REG_TEMP_##REG(nr), \
455 data->temp_##reg##_add[nr-2]); \
456 } else { /* TEMP1 */ \
457 data->temp_##reg = TEMP_TO_REG(val); \
458 w83781d_write_value(client, W83781D_REG_TEMP_##REG(nr), \
462 mutex_unlock(&data->update_lock); \
465 store_temp_reg(OVER, max);
466 store_temp_reg(HYST, max_hyst);
468 #define sysfs_temp_offset(offset) \
470 show_regs_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
472 return show_temp(dev, buf, offset); \
474 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_regs_temp_##offset, NULL);
476 #define sysfs_temp_reg_offset(reg, offset) \
477 static ssize_t show_regs_temp_##reg##offset (struct device *dev, struct device_attribute *attr, char *buf) \
479 return show_temp_##reg (dev, buf, offset); \
481 static ssize_t store_regs_temp_##reg##offset (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
483 return store_temp_##reg (dev, buf, count, offset); \
485 static DEVICE_ATTR(temp##offset##_##reg, S_IRUGO| S_IWUSR, show_regs_temp_##reg##offset, store_regs_temp_##reg##offset);
487 #define sysfs_temp_offsets(offset) \
488 sysfs_temp_offset(offset); \
489 sysfs_temp_reg_offset(max, offset); \
490 sysfs_temp_reg_offset(max_hyst, offset);
492 sysfs_temp_offsets(1);
493 sysfs_temp_offsets(2);
494 sysfs_temp_offsets(3);
496 #define device_create_file_temp(client, offset) \
498 device_create_file(&client->dev, &dev_attr_temp##offset##_input); \
499 device_create_file(&client->dev, &dev_attr_temp##offset##_max); \
500 device_create_file(&client->dev, &dev_attr_temp##offset##_max_hyst); \
504 show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
506 struct w83781d_data *data = w83781d_update_device(dev);
507 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
511 DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
512 #define device_create_file_vid(client) \
513 device_create_file(&client->dev, &dev_attr_cpu0_vid);
515 show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
517 struct w83781d_data *data = w83781d_update_device(dev);
518 return sprintf(buf, "%ld\n", (long) data->vrm);
522 store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
524 struct i2c_client *client = to_i2c_client(dev);
525 struct w83781d_data *data = i2c_get_clientdata(client);
528 val = simple_strtoul(buf, NULL, 10);
535 DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
536 #define device_create_file_vrm(client) \
537 device_create_file(&client->dev, &dev_attr_vrm);
539 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
541 struct w83781d_data *data = w83781d_update_device(dev);
542 return sprintf(buf, "%u\n", data->alarms);
546 DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
547 #define device_create_file_alarms(client) \
548 device_create_file(&client->dev, &dev_attr_alarms);
549 static ssize_t show_beep_mask (struct device *dev, struct device_attribute *attr, char *buf)
551 struct w83781d_data *data = w83781d_update_device(dev);
552 return sprintf(buf, "%ld\n",
553 (long)BEEP_MASK_FROM_REG(data->beep_mask, data->type));
555 static ssize_t show_beep_enable (struct device *dev, struct device_attribute *attr, char *buf)
557 struct w83781d_data *data = w83781d_update_device(dev);
558 return sprintf(buf, "%ld\n",
559 (long)BEEP_ENABLE_FROM_REG(data->beep_enable));
562 #define BEEP_ENABLE 0 /* Store beep_enable */
563 #define BEEP_MASK 1 /* Store beep_mask */
566 store_beep_reg(struct device *dev, const char *buf, size_t count,
569 struct i2c_client *client = to_i2c_client(dev);
570 struct w83781d_data *data = i2c_get_clientdata(client);
573 val = simple_strtoul(buf, NULL, 10);
575 mutex_lock(&data->update_lock);
577 if (update_mask == BEEP_MASK) { /* We are storing beep_mask */
578 data->beep_mask = BEEP_MASK_TO_REG(val, data->type);
579 w83781d_write_value(client, W83781D_REG_BEEP_INTS1,
580 data->beep_mask & 0xff);
582 if ((data->type != w83781d) && (data->type != as99127f)) {
583 w83781d_write_value(client, W83781D_REG_BEEP_INTS3,
584 ((data->beep_mask) >> 16) & 0xff);
587 val2 = (data->beep_mask >> 8) & 0x7f;
588 } else { /* We are storing beep_enable */
589 val2 = w83781d_read_value(client, W83781D_REG_BEEP_INTS2) & 0x7f;
590 data->beep_enable = BEEP_ENABLE_TO_REG(val);
593 w83781d_write_value(client, W83781D_REG_BEEP_INTS2,
594 val2 | data->beep_enable << 7);
596 mutex_unlock(&data->update_lock);
600 #define sysfs_beep(REG, reg) \
601 static ssize_t show_regs_beep_##reg (struct device *dev, struct device_attribute *attr, char *buf) \
603 return show_beep_##reg(dev, attr, buf); \
605 static ssize_t store_regs_beep_##reg (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
607 return store_beep_reg(dev, buf, count, BEEP_##REG); \
609 static DEVICE_ATTR(beep_##reg, S_IRUGO | S_IWUSR, show_regs_beep_##reg, store_regs_beep_##reg);
611 sysfs_beep(ENABLE, enable);
612 sysfs_beep(MASK, mask);
614 #define device_create_file_beep(client) \
616 device_create_file(&client->dev, &dev_attr_beep_enable); \
617 device_create_file(&client->dev, &dev_attr_beep_mask); \
621 show_fan_div_reg(struct device *dev, char *buf, int nr)
623 struct w83781d_data *data = w83781d_update_device(dev);
624 return sprintf(buf, "%ld\n",
625 (long) DIV_FROM_REG(data->fan_div[nr - 1]));
628 /* Note: we save and restore the fan minimum here, because its value is
629 determined in part by the fan divisor. This follows the principle of
630 least suprise; the user doesn't expect the fan minimum to change just
631 because the divisor changed. */
633 store_fan_div_reg(struct device *dev, const char *buf, size_t count, int nr)
635 struct i2c_client *client = to_i2c_client(dev);
636 struct w83781d_data *data = i2c_get_clientdata(client);
639 unsigned long val = simple_strtoul(buf, NULL, 10);
641 mutex_lock(&data->update_lock);
644 min = FAN_FROM_REG(data->fan_min[nr],
645 DIV_FROM_REG(data->fan_div[nr]));
647 data->fan_div[nr] = DIV_TO_REG(val, data->type);
649 reg = (w83781d_read_value(client, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV)
650 & (nr==0 ? 0xcf : 0x3f))
651 | ((data->fan_div[nr] & 0x03) << (nr==0 ? 4 : 6));
652 w83781d_write_value(client, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV, reg);
654 /* w83781d and as99127f don't have extended divisor bits */
655 if (data->type != w83781d && data->type != as99127f) {
656 reg = (w83781d_read_value(client, W83781D_REG_VBAT)
658 | ((data->fan_div[nr] & 0x04) << (3 + nr));
659 w83781d_write_value(client, W83781D_REG_VBAT, reg);
662 /* Restore fan_min */
663 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
664 w83781d_write_value(client, W83781D_REG_FAN_MIN(nr+1), data->fan_min[nr]);
666 mutex_unlock(&data->update_lock);
670 #define sysfs_fan_div(offset) \
671 static ssize_t show_regs_fan_div_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
673 return show_fan_div_reg(dev, buf, offset); \
675 static ssize_t store_regs_fan_div_##offset (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
677 return store_fan_div_reg(dev, buf, count, offset - 1); \
679 static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, show_regs_fan_div_##offset, store_regs_fan_div_##offset);
685 #define device_create_file_fan_div(client, offset) \
687 device_create_file(&client->dev, &dev_attr_fan##offset##_div); \
691 show_pwm_reg(struct device *dev, char *buf, int nr)
693 struct w83781d_data *data = w83781d_update_device(dev);
694 return sprintf(buf, "%ld\n", (long) PWM_FROM_REG(data->pwm[nr - 1]));
698 show_pwmenable_reg(struct device *dev, char *buf, int nr)
700 struct w83781d_data *data = w83781d_update_device(dev);
701 return sprintf(buf, "%ld\n", (long) data->pwmenable[nr - 1]);
705 store_pwm_reg(struct device *dev, const char *buf, size_t count, int nr)
707 struct i2c_client *client = to_i2c_client(dev);
708 struct w83781d_data *data = i2c_get_clientdata(client);
711 val = simple_strtoul(buf, NULL, 10);
713 mutex_lock(&data->update_lock);
714 data->pwm[nr - 1] = PWM_TO_REG(val);
715 w83781d_write_value(client, W83781D_REG_PWM(nr), data->pwm[nr - 1]);
716 mutex_unlock(&data->update_lock);
721 store_pwmenable_reg(struct device *dev, const char *buf, size_t count, int nr)
723 struct i2c_client *client = to_i2c_client(dev);
724 struct w83781d_data *data = i2c_get_clientdata(client);
727 val = simple_strtoul(buf, NULL, 10);
729 mutex_lock(&data->update_lock);
734 reg = w83781d_read_value(client, W83781D_REG_PWMCLK12);
735 w83781d_write_value(client, W83781D_REG_PWMCLK12,
736 (reg & 0xf7) | (val << 3));
738 reg = w83781d_read_value(client, W83781D_REG_BEEP_CONFIG);
739 w83781d_write_value(client, W83781D_REG_BEEP_CONFIG,
740 (reg & 0xef) | (!val << 4));
742 data->pwmenable[nr - 1] = val;
746 mutex_unlock(&data->update_lock);
750 mutex_unlock(&data->update_lock);
754 #define sysfs_pwm(offset) \
755 static ssize_t show_regs_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
757 return show_pwm_reg(dev, buf, offset); \
759 static ssize_t store_regs_pwm_##offset (struct device *dev, struct device_attribute *attr, \
760 const char *buf, size_t count) \
762 return store_pwm_reg(dev, buf, count, offset); \
764 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
765 show_regs_pwm_##offset, store_regs_pwm_##offset);
767 #define sysfs_pwmenable(offset) \
768 static ssize_t show_regs_pwmenable_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
770 return show_pwmenable_reg(dev, buf, offset); \
772 static ssize_t store_regs_pwmenable_##offset (struct device *dev, struct device_attribute *attr, \
773 const char *buf, size_t count) \
775 return store_pwmenable_reg(dev, buf, count, offset); \
777 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
778 show_regs_pwmenable_##offset, store_regs_pwmenable_##offset);
782 sysfs_pwmenable(2); /* only PWM2 can be enabled/disabled */
786 #define device_create_file_pwm(client, offset) \
788 device_create_file(&client->dev, &dev_attr_pwm##offset); \
791 #define device_create_file_pwmenable(client, offset) \
793 device_create_file(&client->dev, &dev_attr_pwm##offset##_enable); \
797 show_sensor_reg(struct device *dev, char *buf, int nr)
799 struct w83781d_data *data = w83781d_update_device(dev);
800 return sprintf(buf, "%ld\n", (long) data->sens[nr - 1]);
804 store_sensor_reg(struct device *dev, const char *buf, size_t count, int nr)
806 struct i2c_client *client = to_i2c_client(dev);
807 struct w83781d_data *data = i2c_get_clientdata(client);
810 val = simple_strtoul(buf, NULL, 10);
812 mutex_lock(&data->update_lock);
815 case 1: /* PII/Celeron diode */
816 tmp = w83781d_read_value(client, W83781D_REG_SCFG1);
817 w83781d_write_value(client, W83781D_REG_SCFG1,
818 tmp | BIT_SCFG1[nr - 1]);
819 tmp = w83781d_read_value(client, W83781D_REG_SCFG2);
820 w83781d_write_value(client, W83781D_REG_SCFG2,
821 tmp | BIT_SCFG2[nr - 1]);
822 data->sens[nr - 1] = val;
825 tmp = w83781d_read_value(client, W83781D_REG_SCFG1);
826 w83781d_write_value(client, W83781D_REG_SCFG1,
827 tmp | BIT_SCFG1[nr - 1]);
828 tmp = w83781d_read_value(client, W83781D_REG_SCFG2);
829 w83781d_write_value(client, W83781D_REG_SCFG2,
830 tmp & ~BIT_SCFG2[nr - 1]);
831 data->sens[nr - 1] = val;
833 case W83781D_DEFAULT_BETA: /* thermistor */
834 tmp = w83781d_read_value(client, W83781D_REG_SCFG1);
835 w83781d_write_value(client, W83781D_REG_SCFG1,
836 tmp & ~BIT_SCFG1[nr - 1]);
837 data->sens[nr - 1] = val;
840 dev_err(dev, "Invalid sensor type %ld; must be 1, 2, or %d\n",
841 (long) val, W83781D_DEFAULT_BETA);
845 mutex_unlock(&data->update_lock);
849 #define sysfs_sensor(offset) \
850 static ssize_t show_regs_sensor_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
852 return show_sensor_reg(dev, buf, offset); \
854 static ssize_t store_regs_sensor_##offset (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
856 return store_sensor_reg(dev, buf, count, offset); \
858 static DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, show_regs_sensor_##offset, store_regs_sensor_##offset);
864 #define device_create_file_sensor(client, offset) \
866 device_create_file(&client->dev, &dev_attr_temp##offset##_type); \
869 /* This function is called when:
870 * w83781d_driver is inserted (when this module is loaded), for each
872 * when a new adapter is inserted (and w83781d_driver is still present) */
874 w83781d_attach_adapter(struct i2c_adapter *adapter)
876 if (!(adapter->class & I2C_CLASS_HWMON))
878 return i2c_probe(adapter, &addr_data, w83781d_detect);
882 w83781d_isa_attach_adapter(struct i2c_adapter *adapter)
884 return w83781d_detect(adapter, isa_address, -1);
887 /* Assumes that adapter is of I2C, not ISA variety.
888 * OTHERWISE DON'T CALL THIS
891 w83781d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
892 struct i2c_client *new_client)
896 const char *client_name = "";
897 struct w83781d_data *data = i2c_get_clientdata(new_client);
899 data->lm75[0] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
900 if (!(data->lm75[0])) {
905 id = i2c_adapter_id(adapter);
907 if (force_subclients[0] == id && force_subclients[1] == address) {
908 for (i = 2; i <= 3; i++) {
909 if (force_subclients[i] < 0x48 ||
910 force_subclients[i] > 0x4f) {
911 dev_err(&new_client->dev, "Invalid subclient "
912 "address %d; must be 0x48-0x4f\n",
913 force_subclients[i]);
918 w83781d_write_value(new_client, W83781D_REG_I2C_SUBADDR,
919 (force_subclients[2] & 0x07) |
920 ((force_subclients[3] & 0x07) << 4));
921 data->lm75[0]->addr = force_subclients[2];
923 val1 = w83781d_read_value(new_client, W83781D_REG_I2C_SUBADDR);
924 data->lm75[0]->addr = 0x48 + (val1 & 0x07);
927 if (kind != w83783s) {
928 data->lm75[1] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
929 if (!(data->lm75[1])) {
934 if (force_subclients[0] == id &&
935 force_subclients[1] == address) {
936 data->lm75[1]->addr = force_subclients[3];
938 data->lm75[1]->addr = 0x48 + ((val1 >> 4) & 0x07);
940 if (data->lm75[0]->addr == data->lm75[1]->addr) {
941 dev_err(&new_client->dev,
942 "Duplicate addresses 0x%x for subclients.\n",
943 data->lm75[0]->addr);
950 client_name = "w83781d subclient";
951 else if (kind == w83782d)
952 client_name = "w83782d subclient";
953 else if (kind == w83783s)
954 client_name = "w83783s subclient";
955 else if (kind == w83627hf)
956 client_name = "w83627hf subclient";
957 else if (kind == as99127f)
958 client_name = "as99127f subclient";
960 for (i = 0; i <= 1; i++) {
961 /* store all data in w83781d */
962 i2c_set_clientdata(data->lm75[i], NULL);
963 data->lm75[i]->adapter = adapter;
964 data->lm75[i]->driver = &w83781d_driver;
965 data->lm75[i]->flags = 0;
966 strlcpy(data->lm75[i]->name, client_name,
968 if ((err = i2c_attach_client(data->lm75[i]))) {
969 dev_err(&new_client->dev, "Subclient %d "
970 "registration at address 0x%x "
971 "failed.\n", i, data->lm75[i]->addr);
982 /* Undo inits in case of errors */
984 i2c_detach_client(data->lm75[0]);
986 kfree(data->lm75[1]);
988 kfree(data->lm75[0]);
994 w83781d_detect(struct i2c_adapter *adapter, int address, int kind)
996 int i = 0, val1 = 0, val2;
997 struct i2c_client *new_client;
998 struct w83781d_data *data;
1000 const char *client_name = "";
1001 int is_isa = i2c_is_isa_adapter(adapter);
1002 enum vendor { winbond, asus } vendid;
1005 && !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1010 /* Prevent users from forcing a kind for a bus it isn't supposed
1011 to possibly be on */
1012 if (is_isa && (kind == as99127f || kind == w83783s)) {
1013 dev_err(&adapter->dev,
1014 "Cannot force I2C-only chip for ISA address 0x%02x.\n",
1021 if (!request_region(address, W83781D_EXTENT,
1022 w83781d_isa_driver.driver.name)) {
1023 dev_dbg(&adapter->dev, "Request of region "
1024 "0x%x-0x%x for w83781d failed\n", address,
1025 address + W83781D_EXTENT - 1);
1030 /* Probe whether there is anything available on this address. Already
1031 done for SMBus clients */
1035 #define REALLY_SLOW_IO
1036 /* We need the timeouts for at least some LM78-like
1037 chips. But only if we read 'undefined' registers. */
1038 i = inb_p(address + 1);
1039 if (inb_p(address + 2) != i
1040 || inb_p(address + 3) != i
1041 || inb_p(address + 7) != i) {
1042 dev_dbg(&adapter->dev, "Detection of w83781d "
1043 "chip failed at step 1\n");
1047 #undef REALLY_SLOW_IO
1049 /* Let's just hope nothing breaks here */
1050 i = inb_p(address + 5) & 0x7f;
1051 outb_p(~i & 0x7f, address + 5);
1052 val2 = inb_p(address + 5) & 0x7f;
1053 if (val2 != (~i & 0x7f)) {
1054 outb_p(i, address + 5);
1055 dev_dbg(&adapter->dev, "Detection of w83781d "
1056 "chip failed at step 2 (0x%x != "
1057 "0x%x at 0x%x)\n", val2, ~i & 0x7f,
1065 /* OK. For now, we presume we have a valid client. We now create the
1066 client structure, even though we cannot fill it completely yet.
1067 But it allows us to access w83781d_{read,write}_value. */
1069 if (!(data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL))) {
1074 new_client = &data->client;
1075 i2c_set_clientdata(new_client, data);
1076 new_client->addr = address;
1077 mutex_init(&data->lock);
1078 new_client->adapter = adapter;
1079 new_client->driver = is_isa ? &w83781d_isa_driver : &w83781d_driver;
1080 new_client->flags = 0;
1082 /* Now, we do the remaining detection. */
1084 /* The w8378?d may be stuck in some other bank than bank 0. This may
1085 make reading other information impossible. Specify a force=... or
1086 force_*=... parameter, and the Winbond will be reset to the right
1089 if (w83781d_read_value(new_client, W83781D_REG_CONFIG) & 0x80) {
1090 dev_dbg(&new_client->dev, "Detection failed at step "
1095 val1 = w83781d_read_value(new_client, W83781D_REG_BANK);
1096 val2 = w83781d_read_value(new_client, W83781D_REG_CHIPMAN);
1097 /* Check for Winbond or Asus ID if in bank 0 */
1098 if ((!(val1 & 0x07)) &&
1099 (((!(val1 & 0x80)) && (val2 != 0xa3) && (val2 != 0xc3))
1100 || ((val1 & 0x80) && (val2 != 0x5c) && (val2 != 0x12)))) {
1101 dev_dbg(&new_client->dev, "Detection failed at step "
1106 /* If Winbond SMBus, check address at 0x48.
1107 Asus doesn't support, except for as99127f rev.2 */
1108 if ((!is_isa) && (((!(val1 & 0x80)) && (val2 == 0xa3)) ||
1109 ((val1 & 0x80) && (val2 == 0x5c)))) {
1110 if (w83781d_read_value
1111 (new_client, W83781D_REG_I2C_ADDR) != address) {
1112 dev_dbg(&new_client->dev, "Detection failed "
1120 /* We have either had a force parameter, or we have already detected the
1121 Winbond. Put it now into bank 0 and Vendor ID High Byte */
1122 w83781d_write_value(new_client, W83781D_REG_BANK,
1123 (w83781d_read_value(new_client,
1124 W83781D_REG_BANK) & 0x78) |
1127 /* Determine the chip type. */
1130 val2 = w83781d_read_value(new_client, W83781D_REG_CHIPMAN);
1133 else if (val2 == 0x12)
1136 dev_dbg(&new_client->dev, "Chip was made by neither "
1137 "Winbond nor Asus?\n");
1142 val1 = w83781d_read_value(new_client, W83781D_REG_WCHIPID);
1143 if ((val1 == 0x10 || val1 == 0x11) && vendid == winbond)
1145 else if (val1 == 0x30 && vendid == winbond)
1147 else if (val1 == 0x40 && vendid == winbond && !is_isa
1150 else if (val1 == 0x21 && vendid == winbond)
1152 else if (val1 == 0x31 && !is_isa && address >= 0x28)
1156 dev_warn(&new_client->dev, "Ignoring 'force' "
1157 "parameter for unknown chip at "
1158 "adapter %d, address 0x%02x\n",
1159 i2c_adapter_id(adapter), address);
1165 if (kind == w83781d) {
1166 client_name = "w83781d";
1167 } else if (kind == w83782d) {
1168 client_name = "w83782d";
1169 } else if (kind == w83783s) {
1170 client_name = "w83783s";
1171 } else if (kind == w83627hf) {
1172 client_name = "w83627hf";
1173 } else if (kind == as99127f) {
1174 client_name = "as99127f";
1177 /* Fill in the remaining client fields and put into the global list */
1178 strlcpy(new_client->name, client_name, I2C_NAME_SIZE);
1182 mutex_init(&data->update_lock);
1184 /* Tell the I2C layer a new client has arrived */
1185 if ((err = i2c_attach_client(new_client)))
1188 /* attach secondary i2c lm75-like clients */
1190 if ((err = w83781d_detect_subclients(adapter, address,
1194 data->lm75[0] = NULL;
1195 data->lm75[1] = NULL;
1198 /* Initialize the chip */
1199 w83781d_init_client(new_client);
1201 /* A few vars need to be filled upon startup */
1202 for (i = 1; i <= 3; i++) {
1203 data->fan_min[i - 1] = w83781d_read_value(new_client,
1204 W83781D_REG_FAN_MIN(i));
1206 if (kind != w83781d && kind != as99127f)
1207 for (i = 0; i < 4; i++)
1208 data->pwmenable[i] = 1;
1210 /* Register sysfs hooks */
1211 data->class_dev = hwmon_device_register(&new_client->dev);
1212 if (IS_ERR(data->class_dev)) {
1213 err = PTR_ERR(data->class_dev);
1217 device_create_file_in(new_client, 0);
1218 if (kind != w83783s)
1219 device_create_file_in(new_client, 1);
1220 device_create_file_in(new_client, 2);
1221 device_create_file_in(new_client, 3);
1222 device_create_file_in(new_client, 4);
1223 device_create_file_in(new_client, 5);
1224 device_create_file_in(new_client, 6);
1225 if (kind != as99127f && kind != w83781d && kind != w83783s) {
1226 device_create_file_in(new_client, 7);
1227 device_create_file_in(new_client, 8);
1230 device_create_file_fan(new_client, 1);
1231 device_create_file_fan(new_client, 2);
1232 device_create_file_fan(new_client, 3);
1234 device_create_file_temp(new_client, 1);
1235 device_create_file_temp(new_client, 2);
1236 if (kind != w83783s)
1237 device_create_file_temp(new_client, 3);
1239 device_create_file_vid(new_client);
1240 device_create_file_vrm(new_client);
1242 device_create_file_fan_div(new_client, 1);
1243 device_create_file_fan_div(new_client, 2);
1244 device_create_file_fan_div(new_client, 3);
1246 device_create_file_alarms(new_client);
1248 device_create_file_beep(new_client);
1250 if (kind != w83781d && kind != as99127f) {
1251 device_create_file_pwm(new_client, 1);
1252 device_create_file_pwm(new_client, 2);
1253 device_create_file_pwmenable(new_client, 2);
1255 if (kind == w83782d && !is_isa) {
1256 device_create_file_pwm(new_client, 3);
1257 device_create_file_pwm(new_client, 4);
1260 if (kind != as99127f && kind != w83781d) {
1261 device_create_file_sensor(new_client, 1);
1262 device_create_file_sensor(new_client, 2);
1263 if (kind != w83783s)
1264 device_create_file_sensor(new_client, 3);
1270 if (data->lm75[1]) {
1271 i2c_detach_client(data->lm75[1]);
1272 kfree(data->lm75[1]);
1274 if (data->lm75[0]) {
1275 i2c_detach_client(data->lm75[0]);
1276 kfree(data->lm75[0]);
1279 i2c_detach_client(new_client);
1284 release_region(address, W83781D_EXTENT);
1290 w83781d_detach_client(struct i2c_client *client)
1292 struct w83781d_data *data = i2c_get_clientdata(client);
1297 hwmon_device_unregister(data->class_dev);
1299 if (i2c_is_isa_client(client))
1300 release_region(client->addr, W83781D_EXTENT);
1302 if ((err = i2c_detach_client(client)))
1316 /* The SMBus locks itself, usually, but nothing may access the Winbond between
1317 bank switches. ISA access must always be locked explicitly!
1318 We ignore the W83781D BUSY flag at this moment - it could lead to deadlocks,
1319 would slow down the W83781D access and should not be necessary.
1320 There are some ugly typecasts here, but the good news is - they should
1321 nowhere else be necessary! */
1323 w83781d_read_value(struct i2c_client *client, u16 reg)
1325 struct w83781d_data *data = i2c_get_clientdata(client);
1326 int res, word_sized, bank;
1327 struct i2c_client *cl;
1329 mutex_lock(&data->lock);
1330 if (i2c_is_isa_client(client)) {
1331 word_sized = (((reg & 0xff00) == 0x100)
1332 || ((reg & 0xff00) == 0x200))
1333 && (((reg & 0x00ff) == 0x50)
1334 || ((reg & 0x00ff) == 0x53)
1335 || ((reg & 0x00ff) == 0x55));
1337 outb_p(W83781D_REG_BANK,
1338 client->addr + W83781D_ADDR_REG_OFFSET);
1340 client->addr + W83781D_DATA_REG_OFFSET);
1342 outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET);
1343 res = inb_p(client->addr + W83781D_DATA_REG_OFFSET);
1345 outb_p((reg & 0xff) + 1,
1346 client->addr + W83781D_ADDR_REG_OFFSET);
1348 (res << 8) + inb_p(client->addr +
1349 W83781D_DATA_REG_OFFSET);
1352 outb_p(W83781D_REG_BANK,
1353 client->addr + W83781D_ADDR_REG_OFFSET);
1354 outb_p(0, client->addr + W83781D_DATA_REG_OFFSET);
1357 bank = (reg >> 8) & 0x0f;
1360 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1362 if (bank == 0 || bank > 2) {
1363 res = i2c_smbus_read_byte_data(client, reg & 0xff);
1365 /* switch to subclient */
1366 cl = data->lm75[bank - 1];
1367 /* convert from ISA to LM75 I2C addresses */
1368 switch (reg & 0xff) {
1369 case 0x50: /* TEMP */
1370 res = swab16(i2c_smbus_read_word_data(cl, 0));
1372 case 0x52: /* CONFIG */
1373 res = i2c_smbus_read_byte_data(cl, 1);
1375 case 0x53: /* HYST */
1376 res = swab16(i2c_smbus_read_word_data(cl, 2));
1378 case 0x55: /* OVER */
1380 res = swab16(i2c_smbus_read_word_data(cl, 3));
1385 i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1387 mutex_unlock(&data->lock);
1392 w83781d_write_value(struct i2c_client *client, u16 reg, u16 value)
1394 struct w83781d_data *data = i2c_get_clientdata(client);
1395 int word_sized, bank;
1396 struct i2c_client *cl;
1398 mutex_lock(&data->lock);
1399 if (i2c_is_isa_client(client)) {
1400 word_sized = (((reg & 0xff00) == 0x100)
1401 || ((reg & 0xff00) == 0x200))
1402 && (((reg & 0x00ff) == 0x53)
1403 || ((reg & 0x00ff) == 0x55));
1405 outb_p(W83781D_REG_BANK,
1406 client->addr + W83781D_ADDR_REG_OFFSET);
1408 client->addr + W83781D_DATA_REG_OFFSET);
1410 outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET);
1413 client->addr + W83781D_DATA_REG_OFFSET);
1414 outb_p((reg & 0xff) + 1,
1415 client->addr + W83781D_ADDR_REG_OFFSET);
1417 outb_p(value & 0xff, client->addr + W83781D_DATA_REG_OFFSET);
1419 outb_p(W83781D_REG_BANK,
1420 client->addr + W83781D_ADDR_REG_OFFSET);
1421 outb_p(0, client->addr + W83781D_DATA_REG_OFFSET);
1424 bank = (reg >> 8) & 0x0f;
1427 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1429 if (bank == 0 || bank > 2) {
1430 i2c_smbus_write_byte_data(client, reg & 0xff,
1433 /* switch to subclient */
1434 cl = data->lm75[bank - 1];
1435 /* convert from ISA to LM75 I2C addresses */
1436 switch (reg & 0xff) {
1437 case 0x52: /* CONFIG */
1438 i2c_smbus_write_byte_data(cl, 1, value & 0xff);
1440 case 0x53: /* HYST */
1441 i2c_smbus_write_word_data(cl, 2, swab16(value));
1443 case 0x55: /* OVER */
1444 i2c_smbus_write_word_data(cl, 3, swab16(value));
1449 i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1451 mutex_unlock(&data->lock);
1456 w83781d_init_client(struct i2c_client *client)
1458 struct w83781d_data *data = i2c_get_clientdata(client);
1460 int type = data->type;
1463 if (init && type != as99127f) { /* this resets registers we don't have
1464 documentation for on the as99127f */
1465 /* save these registers */
1466 i = w83781d_read_value(client, W83781D_REG_BEEP_CONFIG);
1467 p = w83781d_read_value(client, W83781D_REG_PWMCLK12);
1468 /* Reset all except Watchdog values and last conversion values
1469 This sets fan-divs to 2, among others */
1470 w83781d_write_value(client, W83781D_REG_CONFIG, 0x80);
1471 /* Restore the registers and disable power-on abnormal beep.
1472 This saves FAN 1/2/3 input/output values set by BIOS. */
1473 w83781d_write_value(client, W83781D_REG_BEEP_CONFIG, i | 0x80);
1474 w83781d_write_value(client, W83781D_REG_PWMCLK12, p);
1475 /* Disable master beep-enable (reset turns it on).
1476 Individual beep_mask should be reset to off but for some reason
1477 disabling this bit helps some people not get beeped */
1478 w83781d_write_value(client, W83781D_REG_BEEP_INTS2, 0);
1481 data->vrm = vid_which_vrm();
1483 if ((type != w83781d) && (type != as99127f)) {
1484 tmp = w83781d_read_value(client, W83781D_REG_SCFG1);
1485 for (i = 1; i <= 3; i++) {
1486 if (!(tmp & BIT_SCFG1[i - 1])) {
1487 data->sens[i - 1] = W83781D_DEFAULT_BETA;
1489 if (w83781d_read_value
1491 W83781D_REG_SCFG2) & BIT_SCFG2[i - 1])
1492 data->sens[i - 1] = 1;
1494 data->sens[i - 1] = 2;
1496 if (type == w83783s && i == 2)
1501 if (init && type != as99127f) {
1503 tmp = w83781d_read_value(client, W83781D_REG_TEMP2_CONFIG);
1505 dev_warn(&client->dev, "Enabling temp2, readings "
1506 "might not make sense\n");
1507 w83781d_write_value(client, W83781D_REG_TEMP2_CONFIG,
1512 if (type != w83783s) {
1513 tmp = w83781d_read_value(client,
1514 W83781D_REG_TEMP3_CONFIG);
1516 dev_warn(&client->dev, "Enabling temp3, "
1517 "readings might not make sense\n");
1518 w83781d_write_value(client,
1519 W83781D_REG_TEMP3_CONFIG, tmp & 0xfe);
1524 /* Start monitoring */
1525 w83781d_write_value(client, W83781D_REG_CONFIG,
1526 (w83781d_read_value(client,
1527 W83781D_REG_CONFIG) & 0xf7)
1531 static struct w83781d_data *w83781d_update_device(struct device *dev)
1533 struct i2c_client *client = to_i2c_client(dev);
1534 struct w83781d_data *data = i2c_get_clientdata(client);
1537 mutex_lock(&data->update_lock);
1539 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
1541 dev_dbg(dev, "Starting device update\n");
1543 for (i = 0; i <= 8; i++) {
1544 if (data->type == w83783s && i == 1)
1545 continue; /* 783S has no in1 */
1547 w83781d_read_value(client, W83781D_REG_IN(i));
1549 w83781d_read_value(client, W83781D_REG_IN_MIN(i));
1551 w83781d_read_value(client, W83781D_REG_IN_MAX(i));
1552 if ((data->type != w83782d)
1553 && (data->type != w83627hf) && (i == 6))
1556 for (i = 1; i <= 3; i++) {
1558 w83781d_read_value(client, W83781D_REG_FAN(i));
1559 data->fan_min[i - 1] =
1560 w83781d_read_value(client, W83781D_REG_FAN_MIN(i));
1562 if (data->type != w83781d && data->type != as99127f) {
1563 for (i = 1; i <= 4; i++) {
1565 w83781d_read_value(client,
1566 W83781D_REG_PWM(i));
1567 if ((data->type != w83782d
1568 || i2c_is_isa_client(client))
1572 /* Only PWM2 can be disabled */
1573 data->pwmenable[1] = (w83781d_read_value(client,
1574 W83781D_REG_PWMCLK12) & 0x08) >> 3;
1577 data->temp = w83781d_read_value(client, W83781D_REG_TEMP(1));
1579 w83781d_read_value(client, W83781D_REG_TEMP_OVER(1));
1580 data->temp_max_hyst =
1581 w83781d_read_value(client, W83781D_REG_TEMP_HYST(1));
1583 w83781d_read_value(client, W83781D_REG_TEMP(2));
1584 data->temp_max_add[0] =
1585 w83781d_read_value(client, W83781D_REG_TEMP_OVER(2));
1586 data->temp_max_hyst_add[0] =
1587 w83781d_read_value(client, W83781D_REG_TEMP_HYST(2));
1588 if (data->type != w83783s) {
1590 w83781d_read_value(client, W83781D_REG_TEMP(3));
1591 data->temp_max_add[1] =
1592 w83781d_read_value(client,
1593 W83781D_REG_TEMP_OVER(3));
1594 data->temp_max_hyst_add[1] =
1595 w83781d_read_value(client,
1596 W83781D_REG_TEMP_HYST(3));
1598 i = w83781d_read_value(client, W83781D_REG_VID_FANDIV);
1599 data->vid = i & 0x0f;
1600 data->vid |= (w83781d_read_value(client,
1601 W83781D_REG_CHIPID) & 0x01) << 4;
1602 data->fan_div[0] = (i >> 4) & 0x03;
1603 data->fan_div[1] = (i >> 6) & 0x03;
1604 data->fan_div[2] = (w83781d_read_value(client,
1605 W83781D_REG_PIN) >> 6) & 0x03;
1606 if ((data->type != w83781d) && (data->type != as99127f)) {
1607 i = w83781d_read_value(client, W83781D_REG_VBAT);
1608 data->fan_div[0] |= (i >> 3) & 0x04;
1609 data->fan_div[1] |= (i >> 4) & 0x04;
1610 data->fan_div[2] |= (i >> 5) & 0x04;
1612 if ((data->type == w83782d) || (data->type == w83627hf)) {
1613 data->alarms = w83781d_read_value(client,
1615 | (w83781d_read_value(client,
1616 W83782D_REG_ALARM2) << 8)
1617 | (w83781d_read_value(client,
1618 W83782D_REG_ALARM3) << 16);
1619 } else if (data->type == w83783s) {
1620 data->alarms = w83781d_read_value(client,
1622 | (w83781d_read_value(client,
1623 W83782D_REG_ALARM2) << 8);
1625 /* No real-time status registers, fall back to
1626 interrupt status registers */
1627 data->alarms = w83781d_read_value(client,
1629 | (w83781d_read_value(client,
1630 W83781D_REG_ALARM2) << 8);
1632 i = w83781d_read_value(client, W83781D_REG_BEEP_INTS2);
1633 data->beep_enable = i >> 7;
1634 data->beep_mask = ((i & 0x7f) << 8) +
1635 w83781d_read_value(client, W83781D_REG_BEEP_INTS1);
1636 if ((data->type != w83781d) && (data->type != as99127f)) {
1638 w83781d_read_value(client,
1639 W83781D_REG_BEEP_INTS3) << 16;
1641 data->last_updated = jiffies;
1645 mutex_unlock(&data->update_lock);
1651 sensors_w83781d_init(void)
1655 res = i2c_add_driver(&w83781d_driver);
1659 res = i2c_isa_add_driver(&w83781d_isa_driver);
1661 i2c_del_driver(&w83781d_driver);
1669 sensors_w83781d_exit(void)
1671 i2c_isa_del_driver(&w83781d_isa_driver);
1672 i2c_del_driver(&w83781d_driver);
1675 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
1676 "Philip Edelbrock <phil@netroedge.com>, "
1677 "and Mark Studebaker <mdsxyz123@yahoo.com>");
1678 MODULE_DESCRIPTION("W83781D driver");
1679 MODULE_LICENSE("GPL");
1681 module_init(sensors_w83781d_init);
1682 module_exit(sensors_w83781d_exit);