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[PATCH] i2c: Drop i2c_driver.{owner,name}, 2 of 11
[mirror_ubuntu-artful-kernel.git] / drivers / hwmon / fscher.c
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1da177e4
LT		 1/*
2 * fscher.c - Part of lm_sensors, Linux kernel modules for hardware
3 * monitoring
4 * Copyright (C) 2003, 2004 Reinhard Nissl <rnissl@gmx.de>
5 *
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.
10 *
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.
15 *
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.
19 */
20
21/*
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>
27 */
28
1da177e4
LT		 29#include <linux/module.h>
30#include <linux/init.h>
31#include <linux/slab.h>
32#include <linux/jiffies.h>
33#include <linux/i2c.h>
943b0830
MH		 34#include <linux/hwmon.h>
35#include <linux/err.h>
1da177e4
LT		 36
37/*
38 * Addresses to scan
39 */
40
41static unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END };
1da177e4
LT		 42
43/*
44 * Insmod parameters
45 */
46
f4b50261 47I2C_CLIENT_INSMOD_1(fscher);
1da177e4
LT		 48
49/*
50 * The FSCHER registers
51 */
52
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
58
59/* global control and status */
60#define FSCHER_REG_EVENT_STATE 0x04
61#define FSCHER_REG_CONTROL 0x05
62
63/* watchdog */
64#define FSCHER_REG_WDOG_PRESET 0x28
65#define FSCHER_REG_WDOG_STATE 0x23
66#define FSCHER_REG_WDOG_CONTROL 0x21
67
68/* fan 0 */
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
73
74/* fan 1 */
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
79
80/* fan 2 */
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
85
86/* voltage supervision */
87#define FSCHER_REG_VOLT_12 0x45
88#define FSCHER_REG_VOLT_5 0x42
89#define FSCHER_REG_VOLT_BATT 0x48
90
91/* temperature 0 */
92#define FSCHER_REG_TEMP0_ACT 0x64
93#define FSCHER_REG_TEMP0_STATE 0x71
94
95/* temperature 1 */
96#define FSCHER_REG_TEMP1_ACT 0x32
97#define FSCHER_REG_TEMP1_STATE 0x81
98
99/* temperature 2 */
100#define FSCHER_REG_TEMP2_ACT 0x35
101#define FSCHER_REG_TEMP2_STATE 0x91
102
103/*
104 * Functions declaration
105 */
106
107static int fscher_attach_adapter(struct i2c_adapter *adapter);
108static int fscher_detect(struct i2c_adapter *adapter, int address, int kind);
109static int fscher_detach_client(struct i2c_client *client);
110static struct fscher_data *fscher_update_device(struct device *dev);
111static void fscher_init_client(struct i2c_client *client);
112
113static int fscher_read_value(struct i2c_client *client, u8 reg);
114static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value);
115
116/*
117 * Driver data (common to all clients)
118 */
119
120static struct i2c_driver fscher_driver = {
121 .owner = THIS_MODULE,
122 .name = "fscher",
123 .id = I2C_DRIVERID_FSCHER,
1da177e4
LT		 124 .attach_adapter = fscher_attach_adapter,
125 .detach_client = fscher_detach_client,
126};
127
128/*
129 * Client data (each client gets its own)
130 */
131
132struct fscher_data {
133 struct i2c_client client;
943b0830 134 struct class_device *class_dev;
1da177e4
LT		 135 struct semaphore update_lock;
136 char valid; /* zero until following fields are valid */
137 unsigned long last_updated; /* in jiffies */
138
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 */
151};
152
153/*
154 * Sysfs stuff
155 */
156
157#define sysfs_r(kind, sub, offset, reg) \
158static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \
30f74292
YI		 159static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \
160static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 161{ \
162 struct fscher_data *data = fscher_update_device(dev); \
163 return show_##kind##sub(data, buf, (offset)); \
164}
165
166#define sysfs_w(kind, sub, offset, reg) \
167static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \
30f74292
YI		 168static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \
169static ssize_t set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
1da177e4
LT		 170{ \
171 struct i2c_client *client = to_i2c_client(dev); \
172 struct fscher_data *data = i2c_get_clientdata(client); \
173 return set_##kind##sub(client, data, buf, count, (offset), reg); \
174}
175
176#define sysfs_rw_n(kind, sub, offset, reg) \
177sysfs_r(kind, sub, offset, reg) \
178sysfs_w(kind, sub, offset, reg) \
179static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub);
180
181#define sysfs_rw(kind, sub, reg) \
182sysfs_r(kind, sub, 0, reg) \
183sysfs_w(kind, sub, 0, reg) \
184static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub);
185
186#define sysfs_ro_n(kind, sub, offset, reg) \
187sysfs_r(kind, sub, offset, reg) \
188static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL);
189
190#define sysfs_ro(kind, sub, reg) \
191sysfs_r(kind, sub, 0, reg) \
192static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL);
193
194#define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \
195sysfs_rw_n(pwm, , offset, reg_min) \
196sysfs_rw_n(fan, _status, offset, reg_status) \
197sysfs_rw_n(fan, _div , offset, reg_ripple) \
198sysfs_ro_n(fan, _input , offset, reg_act)
199
200#define sysfs_temp(offset, reg_status, reg_act) \
201sysfs_rw_n(temp, _status, offset, reg_status) \
202sysfs_ro_n(temp, _input , offset, reg_act)
203
204#define sysfs_in(offset, reg_act) \
205sysfs_ro_n(in, _input, offset, reg_act)
206
207#define sysfs_revision(reg_revision) \
208sysfs_ro(revision, , reg_revision)
209
210#define sysfs_alarms(reg_events) \
211sysfs_ro(alarms, , reg_events)
212
213#define sysfs_control(reg_control) \
214sysfs_rw(control, , reg_control)
215
216#define sysfs_watchdog(reg_control, reg_status, reg_preset) \
217sysfs_rw(watchdog, _control, reg_control) \
218sysfs_rw(watchdog, _status , reg_status) \
219sysfs_rw(watchdog, _preset , reg_preset)
220
221sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN,
222 FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT)
223sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN,
224 FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT)
225sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN,
226 FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT)
227
228sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT)
229sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT)
230sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT)
231
232sysfs_in(0, FSCHER_REG_VOLT_12)
233sysfs_in(1, FSCHER_REG_VOLT_5)
234sysfs_in(2, FSCHER_REG_VOLT_BATT)
235
236sysfs_revision(FSCHER_REG_REVISION)
237sysfs_alarms(FSCHER_REG_EVENTS)
238sysfs_control(FSCHER_REG_CONTROL)
239sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET)
240
241#define device_create_file_fan(client, offset) \
242do { \
243 device_create_file(&client->dev, &dev_attr_fan##offset##_status); \
244 device_create_file(&client->dev, &dev_attr_pwm##offset); \
245 device_create_file(&client->dev, &dev_attr_fan##offset##_div); \
246 device_create_file(&client->dev, &dev_attr_fan##offset##_input); \
247} while (0)
248
249#define device_create_file_temp(client, offset) \
250do { \
251 device_create_file(&client->dev, &dev_attr_temp##offset##_status); \
252 device_create_file(&client->dev, &dev_attr_temp##offset##_input); \
253} while (0)
254
255#define device_create_file_in(client, offset) \
256do { \
257 device_create_file(&client->dev, &dev_attr_in##offset##_input); \
258} while (0)
259
260#define device_create_file_revision(client) \
261do { \
262 device_create_file(&client->dev, &dev_attr_revision); \
263} while (0)
264
265#define device_create_file_alarms(client) \
266do { \
267 device_create_file(&client->dev, &dev_attr_alarms); \
268} while (0)
269
270#define device_create_file_control(client) \
271do { \
272 device_create_file(&client->dev, &dev_attr_control); \
273} while (0)
274
275#define device_create_file_watchdog(client) \
276do { \
277 device_create_file(&client->dev, &dev_attr_watchdog_status); \
278 device_create_file(&client->dev, &dev_attr_watchdog_control); \
279 device_create_file(&client->dev, &dev_attr_watchdog_preset); \
280} while (0)
281
282/*
283 * Real code
284 */
285
286static int fscher_attach_adapter(struct i2c_adapter *adapter)
287{
288 if (!(adapter->class & I2C_CLASS_HWMON))
289 return 0;
2ed2dc3c 290 return i2c_probe(adapter, &addr_data, fscher_detect);
1da177e4
LT		 291}
292
293static int fscher_detect(struct i2c_adapter *adapter, int address, int kind)
294{
295 struct i2c_client *new_client;
296 struct fscher_data *data;
297 int err = 0;
298
299 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
300 goto exit;
301
302 /* OK. For now, we presume we have a valid client. We now create the
303 * client structure, even though we cannot fill it completely yet.
304 * But it allows us to access i2c_smbus_read_byte_data. */
ba9c2e8d 305 if (!(data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL))) {
1da177e4
LT		 306 err = -ENOMEM;
307 goto exit;
308 }
1da177e4
LT		 309
310 /* The common I2C client data is placed right before the
311 * Hermes-specific data. */
312 new_client = &data->client;
313 i2c_set_clientdata(new_client, data);
314 new_client->addr = address;
315 new_client->adapter = adapter;
316 new_client->driver = &fscher_driver;
317 new_client->flags = 0;
318
319 /* Do the remaining detection unless force or force_fscher parameter */
320 if (kind < 0) {
321 if ((i2c_smbus_read_byte_data(new_client,
322 FSCHER_REG_IDENT_0) != 0x48) /* 'H' */
323 || (i2c_smbus_read_byte_data(new_client,
324 FSCHER_REG_IDENT_1) != 0x45) /* 'E' */
325 || (i2c_smbus_read_byte_data(new_client,
326 FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */
327 goto exit_free;
328 }
329
330 /* Fill in the remaining client fields and put it into the
331 * global list */
332 strlcpy(new_client->name, "fscher", I2C_NAME_SIZE);
333 data->valid = 0;
334 init_MUTEX(&data->update_lock);
335
336 /* Tell the I2C layer a new client has arrived */
337 if ((err = i2c_attach_client(new_client)))
338 goto exit_free;
339
340 fscher_init_client(new_client);
341
342 /* Register sysfs hooks */
943b0830
MH		 343 data->class_dev = hwmon_device_register(&new_client->dev);
344 if (IS_ERR(data->class_dev)) {
345 err = PTR_ERR(data->class_dev);
346 goto exit_detach;
347 }
348
1da177e4
LT		 349 device_create_file_revision(new_client);
350 device_create_file_alarms(new_client);
351 device_create_file_control(new_client);
352 device_create_file_watchdog(new_client);
353
354 device_create_file_in(new_client, 0);
355 device_create_file_in(new_client, 1);
356 device_create_file_in(new_client, 2);
357
358 device_create_file_fan(new_client, 1);
359 device_create_file_fan(new_client, 2);
360 device_create_file_fan(new_client, 3);
361
362 device_create_file_temp(new_client, 1);
363 device_create_file_temp(new_client, 2);
364 device_create_file_temp(new_client, 3);
365
366 return 0;
367
943b0830
MH		 368exit_detach:
369 i2c_detach_client(new_client);
1da177e4
LT		 370exit_free:
371 kfree(data);
372exit:
373 return err;
374}
375
376static int fscher_detach_client(struct i2c_client *client)
377{
943b0830 378 struct fscher_data *data = i2c_get_clientdata(client);
1da177e4
LT		 379 int err;
380
943b0830
MH		 381 hwmon_device_unregister(data->class_dev);
382
7bef5594 383 if ((err = i2c_detach_client(client)))
1da177e4 384 return err;
1da177e4 385
943b0830 386 kfree(data);
1da177e4
LT		 387 return 0;
388}
389
390static int fscher_read_value(struct i2c_client *client, u8 reg)
391{
392 dev_dbg(&client->dev, "read reg 0x%02x\n", reg);
393
394 return i2c_smbus_read_byte_data(client, reg);
395}
396
397static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value)
398{
399 dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n",
400 reg, value);
401
402 return i2c_smbus_write_byte_data(client, reg, value);
403}
404
405/* Called when we have found a new FSC Hermes. */
406static void fscher_init_client(struct i2c_client *client)
407{
408 struct fscher_data *data = i2c_get_clientdata(client);
409
410 /* Read revision from chip */
411 data->revision = fscher_read_value(client, FSCHER_REG_REVISION);
412}
413
414static struct fscher_data *fscher_update_device(struct device *dev)
415{
416 struct i2c_client *client = to_i2c_client(dev);
417 struct fscher_data *data = i2c_get_clientdata(client);
418
419 down(&data->update_lock);
420
421 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
422
423 dev_dbg(&client->dev, "Starting fscher update\n");
424
425 data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT);
426 data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT);
427 data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT);
428 data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE);
429 data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE);
430 data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE);
431
432 data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12);
433 data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5);
434 data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT);
435
436 data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT);
437 data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT);
438 data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT);
439 data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE);
440 data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE);
441 data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE);
442 data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN);
443 data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN);
444 data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN);
445 data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE);
446 data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE);
447 data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE);
448
449 data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET);
450 data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE);
451 data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL);
452
453 data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE);
454
455 data->last_updated = jiffies;
456 data->valid = 1;
457 }
458
459 up(&data->update_lock);
460
461 return data;
462}
463
464
465
466#define FAN_INDEX_FROM_NUM(nr) ((nr) - 1)
467
468static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data,
469 const char *buf, size_t count, int nr, int reg)
470{
471 /* bits 0..1, 3..7 reserved => mask with 0x04 */
472 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04;
473
474 down(&data->update_lock);
475 data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v;
476 fscher_write_value(client, reg, v);
477 up(&data->update_lock);
478 return count;
479}
480
481static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr)
482{
483 /* bits 0..1, 3..7 reserved => mask with 0x04 */
484 return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04);
485}
486
487static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data,
488 const char *buf, size_t count, int nr, int reg)
489{
490 unsigned long v = simple_strtoul(buf, NULL, 10);
491
492 down(&data->update_lock);
493 data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v;
494 fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
495 up(&data->update_lock);
496 return count;
497}
498
499static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr)
500{
501 return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
502}
503
504static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data,
505 const char *buf, size_t count, int nr, int reg)
506{
507 /* supported values: 2, 4, 8 */
508 unsigned long v = simple_strtoul(buf, NULL, 10);
509
510 switch (v) {
511 case 2: v = 1; break;
512 case 4: v = 2; break;
513 case 8: v = 3; break;
514 default:
515 dev_err(&client->dev, "fan_div value %ld not "
516 "supported. Choose one of 2, 4 or 8!\n", v);
517 return -EINVAL;
518 }
519
520 down(&data->update_lock);
521
522 /* bits 2..7 reserved => mask with 0x03 */
523 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03;
524 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v;
525
526 fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]);
527 up(&data->update_lock);
528 return count;
529}
530
531static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr)
532{
533 /* bits 2..7 reserved => mask with 0x03 */
534 return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03));
535}
536
537#define RPM_FROM_REG(val) (val*60)
538
539static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr)
540{
541 return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)]));
542}
543
544
545
546#define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1)
547
548static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data,
549 const char *buf, size_t count, int nr, int reg)
550{
551 /* bits 2..7 reserved, 0 read only => mask with 0x02 */
552 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
553
554 down(&data->update_lock);
555 data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v;
556 fscher_write_value(client, reg, v);
557 up(&data->update_lock);
558 return count;
559}
560
561static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr)
562{
563 /* bits 2..7 reserved => mask with 0x03 */
564 return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03);
565}
566
567#define TEMP_FROM_REG(val) (((val) - 128) * 1000)
568
569static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr)
570{
571 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)]));
572}
573
574/*
575 * The final conversion is specified in sensors.conf, as it depends on
576 * mainboard specific values. We export the registers contents as
577 * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much
578 * sense per se, but it minimizes the conversions count and keeps the
579 * values within a usual range.
580 */
581#define VOLT_FROM_REG(val) ((val) * 10)
582
583static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr)
584{
585 return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr]));
586}
587
588
589
590static ssize_t show_revision(struct fscher_data *data, char *buf, int nr)
591{
592 return sprintf(buf, "%u\n", data->revision);
593}
594
595
596
597static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr)
598{
599 /* bits 2, 5..6 reserved => mask with 0x9b */
600 return sprintf(buf, "%u\n", data->global_event & 0x9b);
601}
602
603
604
605static ssize_t set_control(struct i2c_client *client, struct fscher_data *data,
606 const char *buf, size_t count, int nr, int reg)
607{
608 /* bits 1..7 reserved => mask with 0x01 */
609 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01;
610
611 down(&data->update_lock);
612 data->global_control &= ~v;
613 fscher_write_value(client, reg, v);
614 up(&data->update_lock);
615 return count;
616}
617
618static ssize_t show_control(struct fscher_data *data, char *buf, int nr)
619{
620 /* bits 1..7 reserved => mask with 0x01 */
621 return sprintf(buf, "%u\n", data->global_control & 0x01);
622}
623
624
625
626static ssize_t set_watchdog_control(struct i2c_client *client, struct
627 fscher_data *data, const char *buf, size_t count,
628 int nr, int reg)
629{
630 /* bits 0..3 reserved => mask with 0xf0 */
631 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0;
632
633 down(&data->update_lock);
634 data->watchdog[2] &= ~0xf0;
635 data->watchdog[2] |= v;
636 fscher_write_value(client, reg, data->watchdog[2]);
637 up(&data->update_lock);
638 return count;
639}
640
641static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr)
642{
643 /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */
644 return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0);
645}
646
647static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data,
648 const char *buf, size_t count, int nr, int reg)
649{
650 /* bits 0, 2..7 reserved => mask with 0x02 */
651 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
652
653 down(&data->update_lock);
654 data->watchdog[1] &= ~v;
655 fscher_write_value(client, reg, v);
656 up(&data->update_lock);
657 return count;
658}
659
660static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr)
661{
662 /* bits 0, 2..7 reserved => mask with 0x02 */
663 return sprintf(buf, "%u\n", data->watchdog[1] & 0x02);
664}
665
666static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data,
667 const char *buf, size_t count, int nr, int reg)
668{
669 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff;
670
671 down(&data->update_lock);
672 data->watchdog[0] = v;
673 fscher_write_value(client, reg, data->watchdog[0]);
674 up(&data->update_lock);
675 return count;
676}
677
678static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr)
679{
680 return sprintf(buf, "%u\n", data->watchdog[0]);
681}
682
683static int __init sensors_fscher_init(void)
684{
685 return i2c_add_driver(&fscher_driver);
686}
687
688static void __exit sensors_fscher_exit(void)
689{
690 i2c_del_driver(&fscher_driver);
691}
692
693MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>");
694MODULE_DESCRIPTION("FSC Hermes driver");
695MODULE_LICENSE("GPL");
696
697module_init(sensors_fscher_init);
698module_exit(sensors_fscher_exit);
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