2 * fscher.c - Part of lm_sensors, Linux kernel modules for hardware
4 * Copyright (C) 2003, 2004 Reinhard Nissl <rnissl@gmx.de>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 * fujitsu siemens hermes chip,
23 * module based on fscpos.c
24 * Copyright (C) 2000 Hermann Jung <hej@odn.de>
25 * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
26 * and Philip Edelbrock <phil@netroedge.com>
29 #include <linux/config.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/i2c.h>
34 #include <linux/i2c-sensor.h>
40 static unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END };
41 static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
47 SENSORS_INSMOD_1(fscher);
50 * The FSCHER registers
53 /* chip identification */
54 #define FSCHER_REG_IDENT_0 0x00
55 #define FSCHER_REG_IDENT_1 0x01
56 #define FSCHER_REG_IDENT_2 0x02
57 #define FSCHER_REG_REVISION 0x03
59 /* global control and status */
60 #define FSCHER_REG_EVENT_STATE 0x04
61 #define FSCHER_REG_CONTROL 0x05
64 #define FSCHER_REG_WDOG_PRESET 0x28
65 #define FSCHER_REG_WDOG_STATE 0x23
66 #define FSCHER_REG_WDOG_CONTROL 0x21
69 #define FSCHER_REG_FAN0_MIN 0x55
70 #define FSCHER_REG_FAN0_ACT 0x0e
71 #define FSCHER_REG_FAN0_STATE 0x0d
72 #define FSCHER_REG_FAN0_RIPPLE 0x0f
75 #define FSCHER_REG_FAN1_MIN 0x65
76 #define FSCHER_REG_FAN1_ACT 0x6b
77 #define FSCHER_REG_FAN1_STATE 0x62
78 #define FSCHER_REG_FAN1_RIPPLE 0x6f
81 #define FSCHER_REG_FAN2_MIN 0xb5
82 #define FSCHER_REG_FAN2_ACT 0xbb
83 #define FSCHER_REG_FAN2_STATE 0xb2
84 #define FSCHER_REG_FAN2_RIPPLE 0xbf
86 /* voltage supervision */
87 #define FSCHER_REG_VOLT_12 0x45
88 #define FSCHER_REG_VOLT_5 0x42
89 #define FSCHER_REG_VOLT_BATT 0x48
92 #define FSCHER_REG_TEMP0_ACT 0x64
93 #define FSCHER_REG_TEMP0_STATE 0x71
96 #define FSCHER_REG_TEMP1_ACT 0x32
97 #define FSCHER_REG_TEMP1_STATE 0x81
100 #define FSCHER_REG_TEMP2_ACT 0x35
101 #define FSCHER_REG_TEMP2_STATE 0x91
104 * Functions declaration
107 static int fscher_attach_adapter(struct i2c_adapter *adapter);
108 static int fscher_detect(struct i2c_adapter *adapter, int address, int kind);
109 static int fscher_detach_client(struct i2c_client *client);
110 static struct fscher_data *fscher_update_device(struct device *dev);
111 static void fscher_init_client(struct i2c_client *client);
113 static int fscher_read_value(struct i2c_client *client, u8 reg);
114 static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value);
117 * Driver data (common to all clients)
120 static struct i2c_driver fscher_driver = {
121 .owner = THIS_MODULE,
123 .id = I2C_DRIVERID_FSCHER,
124 .flags = I2C_DF_NOTIFY,
125 .attach_adapter = fscher_attach_adapter,
126 .detach_client = fscher_detach_client,
130 * Client data (each client gets its own)
134 struct i2c_client client;
135 struct semaphore update_lock;
136 char valid; /* zero until following fields are valid */
137 unsigned long last_updated; /* in jiffies */
139 /* register values */
140 u8 revision; /* revision of chip */
141 u8 global_event; /* global event status */
142 u8 global_control; /* global control register */
143 u8 watchdog[3]; /* watchdog */
144 u8 volt[3]; /* 12, 5, battery voltage */
145 u8 temp_act[3]; /* temperature */
146 u8 temp_status[3]; /* status of sensor */
147 u8 fan_act[3]; /* fans revolutions per second */
148 u8 fan_status[3]; /* fan status */
149 u8 fan_min[3]; /* fan min value for rps */
150 u8 fan_ripple[3]; /* divider for rps */
157 static int fscher_id;
163 #define sysfs_r(kind, sub, offset, reg) \
164 static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \
165 static ssize_t show_##kind##offset##sub (struct device *, char *); \
166 static ssize_t show_##kind##offset##sub (struct device *dev, char *buf) \
168 struct fscher_data *data = fscher_update_device(dev); \
169 return show_##kind##sub(data, buf, (offset)); \
172 #define sysfs_w(kind, sub, offset, reg) \
173 static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \
174 static ssize_t set_##kind##offset##sub (struct device *, const char *, size_t); \
175 static ssize_t set_##kind##offset##sub (struct device *dev, const char *buf, size_t count) \
177 struct i2c_client *client = to_i2c_client(dev); \
178 struct fscher_data *data = i2c_get_clientdata(client); \
179 return set_##kind##sub(client, data, buf, count, (offset), reg); \
182 #define sysfs_rw_n(kind, sub, offset, reg) \
183 sysfs_r(kind, sub, offset, reg) \
184 sysfs_w(kind, sub, offset, reg) \
185 static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub);
187 #define sysfs_rw(kind, sub, reg) \
188 sysfs_r(kind, sub, 0, reg) \
189 sysfs_w(kind, sub, 0, reg) \
190 static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub);
192 #define sysfs_ro_n(kind, sub, offset, reg) \
193 sysfs_r(kind, sub, offset, reg) \
194 static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL);
196 #define sysfs_ro(kind, sub, reg) \
197 sysfs_r(kind, sub, 0, reg) \
198 static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL);
200 #define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \
201 sysfs_rw_n(pwm, , offset, reg_min) \
202 sysfs_rw_n(fan, _status, offset, reg_status) \
203 sysfs_rw_n(fan, _div , offset, reg_ripple) \
204 sysfs_ro_n(fan, _input , offset, reg_act)
206 #define sysfs_temp(offset, reg_status, reg_act) \
207 sysfs_rw_n(temp, _status, offset, reg_status) \
208 sysfs_ro_n(temp, _input , offset, reg_act)
210 #define sysfs_in(offset, reg_act) \
211 sysfs_ro_n(in, _input, offset, reg_act)
213 #define sysfs_revision(reg_revision) \
214 sysfs_ro(revision, , reg_revision)
216 #define sysfs_alarms(reg_events) \
217 sysfs_ro(alarms, , reg_events)
219 #define sysfs_control(reg_control) \
220 sysfs_rw(control, , reg_control)
222 #define sysfs_watchdog(reg_control, reg_status, reg_preset) \
223 sysfs_rw(watchdog, _control, reg_control) \
224 sysfs_rw(watchdog, _status , reg_status) \
225 sysfs_rw(watchdog, _preset , reg_preset)
227 sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN,
228 FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT)
229 sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN,
230 FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT)
231 sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN,
232 FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT)
234 sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT)
235 sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT)
236 sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT)
238 sysfs_in(0, FSCHER_REG_VOLT_12)
239 sysfs_in(1, FSCHER_REG_VOLT_5)
240 sysfs_in(2, FSCHER_REG_VOLT_BATT)
242 sysfs_revision(FSCHER_REG_REVISION)
243 sysfs_alarms(FSCHER_REG_EVENTS)
244 sysfs_control(FSCHER_REG_CONTROL)
245 sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET)
247 #define device_create_file_fan(client, offset) \
249 device_create_file(&client->dev, &dev_attr_fan##offset##_status); \
250 device_create_file(&client->dev, &dev_attr_pwm##offset); \
251 device_create_file(&client->dev, &dev_attr_fan##offset##_div); \
252 device_create_file(&client->dev, &dev_attr_fan##offset##_input); \
255 #define device_create_file_temp(client, offset) \
257 device_create_file(&client->dev, &dev_attr_temp##offset##_status); \
258 device_create_file(&client->dev, &dev_attr_temp##offset##_input); \
261 #define device_create_file_in(client, offset) \
263 device_create_file(&client->dev, &dev_attr_in##offset##_input); \
266 #define device_create_file_revision(client) \
268 device_create_file(&client->dev, &dev_attr_revision); \
271 #define device_create_file_alarms(client) \
273 device_create_file(&client->dev, &dev_attr_alarms); \
276 #define device_create_file_control(client) \
278 device_create_file(&client->dev, &dev_attr_control); \
281 #define device_create_file_watchdog(client) \
283 device_create_file(&client->dev, &dev_attr_watchdog_status); \
284 device_create_file(&client->dev, &dev_attr_watchdog_control); \
285 device_create_file(&client->dev, &dev_attr_watchdog_preset); \
292 static int fscher_attach_adapter(struct i2c_adapter *adapter)
294 if (!(adapter->class & I2C_CLASS_HWMON))
296 return i2c_detect(adapter, &addr_data, fscher_detect);
299 static int fscher_detect(struct i2c_adapter *adapter, int address, int kind)
301 struct i2c_client *new_client;
302 struct fscher_data *data;
305 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
308 /* OK. For now, we presume we have a valid client. We now create the
309 * client structure, even though we cannot fill it completely yet.
310 * But it allows us to access i2c_smbus_read_byte_data. */
311 if (!(data = kmalloc(sizeof(struct fscher_data), GFP_KERNEL))) {
315 memset(data, 0, sizeof(struct fscher_data));
317 /* The common I2C client data is placed right before the
318 * Hermes-specific data. */
319 new_client = &data->client;
320 i2c_set_clientdata(new_client, data);
321 new_client->addr = address;
322 new_client->adapter = adapter;
323 new_client->driver = &fscher_driver;
324 new_client->flags = 0;
326 /* Do the remaining detection unless force or force_fscher parameter */
328 if ((i2c_smbus_read_byte_data(new_client,
329 FSCHER_REG_IDENT_0) != 0x48) /* 'H' */
330 || (i2c_smbus_read_byte_data(new_client,
331 FSCHER_REG_IDENT_1) != 0x45) /* 'E' */
332 || (i2c_smbus_read_byte_data(new_client,
333 FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */
337 /* Fill in the remaining client fields and put it into the
339 strlcpy(new_client->name, "fscher", I2C_NAME_SIZE);
340 new_client->id = fscher_id++;
342 init_MUTEX(&data->update_lock);
344 /* Tell the I2C layer a new client has arrived */
345 if ((err = i2c_attach_client(new_client)))
348 fscher_init_client(new_client);
350 /* Register sysfs hooks */
351 device_create_file_revision(new_client);
352 device_create_file_alarms(new_client);
353 device_create_file_control(new_client);
354 device_create_file_watchdog(new_client);
356 device_create_file_in(new_client, 0);
357 device_create_file_in(new_client, 1);
358 device_create_file_in(new_client, 2);
360 device_create_file_fan(new_client, 1);
361 device_create_file_fan(new_client, 2);
362 device_create_file_fan(new_client, 3);
364 device_create_file_temp(new_client, 1);
365 device_create_file_temp(new_client, 2);
366 device_create_file_temp(new_client, 3);
376 static int fscher_detach_client(struct i2c_client *client)
380 if ((err = i2c_detach_client(client))) {
381 dev_err(&client->dev, "Client deregistration failed, "
382 "client not detached.\n");
386 kfree(i2c_get_clientdata(client));
390 static int fscher_read_value(struct i2c_client *client, u8 reg)
392 dev_dbg(&client->dev, "read reg 0x%02x\n", reg);
394 return i2c_smbus_read_byte_data(client, reg);
397 static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value)
399 dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n",
402 return i2c_smbus_write_byte_data(client, reg, value);
405 /* Called when we have found a new FSC Hermes. */
406 static void fscher_init_client(struct i2c_client *client)
408 struct fscher_data *data = i2c_get_clientdata(client);
410 /* Read revision from chip */
411 data->revision = fscher_read_value(client, FSCHER_REG_REVISION);
414 static struct fscher_data *fscher_update_device(struct device *dev)
416 struct i2c_client *client = to_i2c_client(dev);
417 struct fscher_data *data = i2c_get_clientdata(client);
419 down(&data->update_lock);
421 if ((jiffies - data->last_updated > 2 * HZ) ||
422 (jiffies < data->last_updated) || !data->valid) {
424 dev_dbg(&client->dev, "Starting fscher update\n");
426 data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT);
427 data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT);
428 data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT);
429 data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE);
430 data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE);
431 data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE);
433 data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12);
434 data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5);
435 data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT);
437 data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT);
438 data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT);
439 data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT);
440 data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE);
441 data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE);
442 data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE);
443 data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN);
444 data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN);
445 data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN);
446 data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE);
447 data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE);
448 data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE);
450 data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET);
451 data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE);
452 data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL);
454 data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE);
456 data->last_updated = jiffies;
460 up(&data->update_lock);
467 #define FAN_INDEX_FROM_NUM(nr) ((nr) - 1)
469 static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data,
470 const char *buf, size_t count, int nr, int reg)
472 /* bits 0..1, 3..7 reserved => mask with 0x04 */
473 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04;
474 data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v;
476 fscher_write_value(client, reg, v);
480 static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr)
482 /* bits 0..1, 3..7 reserved => mask with 0x04 */
483 return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04);
486 static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data,
487 const char *buf, size_t count, int nr, int reg)
489 unsigned long v = simple_strtoul(buf, NULL, 10);
490 data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v;
492 fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
496 static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr)
498 return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
501 static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data,
502 const char *buf, size_t count, int nr, int reg)
504 /* supported values: 2, 4, 8 */
505 unsigned long v = simple_strtoul(buf, NULL, 10);
508 case 2: v = 1; break;
509 case 4: v = 2; break;
510 case 8: v = 3; break;
512 dev_err(&client->dev, "fan_div value %ld not "
513 "supported. Choose one of 2, 4 or 8!\n", v);
517 /* bits 2..7 reserved => mask with 0x03 */
518 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03;
519 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v;
521 fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]);
525 static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr)
527 /* bits 2..7 reserved => mask with 0x03 */
528 return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03));
531 #define RPM_FROM_REG(val) (val*60)
533 static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr)
535 return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)]));
540 #define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1)
542 static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data,
543 const char *buf, size_t count, int nr, int reg)
545 /* bits 2..7 reserved, 0 read only => mask with 0x02 */
546 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
547 data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v;
549 fscher_write_value(client, reg, v);
553 static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr)
555 /* bits 2..7 reserved => mask with 0x03 */
556 return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03);
559 #define TEMP_FROM_REG(val) (((val) - 128) * 1000)
561 static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr)
563 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)]));
567 * The final conversion is specified in sensors.conf, as it depends on
568 * mainboard specific values. We export the registers contents as
569 * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much
570 * sense per se, but it minimizes the conversions count and keeps the
571 * values within a usual range.
573 #define VOLT_FROM_REG(val) ((val) * 10)
575 static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr)
577 return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr]));
582 static ssize_t show_revision(struct fscher_data *data, char *buf, int nr)
584 return sprintf(buf, "%u\n", data->revision);
589 static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr)
591 /* bits 2, 5..6 reserved => mask with 0x9b */
592 return sprintf(buf, "%u\n", data->global_event & 0x9b);
597 static ssize_t set_control(struct i2c_client *client, struct fscher_data *data,
598 const char *buf, size_t count, int nr, int reg)
600 /* bits 1..7 reserved => mask with 0x01 */
601 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01;
602 data->global_control &= ~v;
604 fscher_write_value(client, reg, v);
608 static ssize_t show_control(struct fscher_data *data, char *buf, int nr)
610 /* bits 1..7 reserved => mask with 0x01 */
611 return sprintf(buf, "%u\n", data->global_control & 0x01);
616 static ssize_t set_watchdog_control(struct i2c_client *client, struct
617 fscher_data *data, const char *buf, size_t count,
620 /* bits 0..3 reserved => mask with 0xf0 */
621 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0;
622 data->watchdog[2] &= ~0xf0;
623 data->watchdog[2] |= v;
625 fscher_write_value(client, reg, data->watchdog[2]);
629 static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr)
631 /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */
632 return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0);
635 static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data,
636 const char *buf, size_t count, int nr, int reg)
638 /* bits 0, 2..7 reserved => mask with 0x02 */
639 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
640 data->watchdog[1] &= ~v;
642 fscher_write_value(client, reg, v);
646 static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr)
648 /* bits 0, 2..7 reserved => mask with 0x02 */
649 return sprintf(buf, "%u\n", data->watchdog[1] & 0x02);
652 static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data,
653 const char *buf, size_t count, int nr, int reg)
655 data->watchdog[0] = simple_strtoul(buf, NULL, 10) & 0xff;
657 fscher_write_value(client, reg, data->watchdog[0]);
661 static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr)
663 return sprintf(buf, "%u\n", data->watchdog[0]);
666 static int __init sensors_fscher_init(void)
668 return i2c_add_driver(&fscher_driver);
671 static void __exit sensors_fscher_exit(void)
673 i2c_del_driver(&fscher_driver);
676 MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>");
677 MODULE_DESCRIPTION("FSC Hermes driver");
678 MODULE_LICENSE("GPL");
680 module_init(sensors_fscher_init);
681 module_exit(sensors_fscher_exit);