blob: 25409181d1eb87940ef69f6166cd46f4f7ff9678 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <linux/module.h>
30#include <linux/init.h>
31#include <linux/slab.h>
32#include <linux/jiffies.h>
33#include <linux/i2c.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040034#include <linux/hwmon.h>
35#include <linux/err.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
37/*
38 * Addresses to scan
39 */
40
41static unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END };
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
43/*
44 * Insmod parameters
45 */
46
Jean Delvaref4b50262005-07-31 21:49:03 +020047I2C_CLIENT_INSMOD_1(fscher);
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
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 = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100121 .driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100122 .name = "fscher",
123 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 .id = I2C_DRIVERID_FSCHER,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 .attach_adapter = fscher_attach_adapter,
126 .detach_client = fscher_detach_client,
127};
128
129/*
130 * Client data (each client gets its own)
131 */
132
133struct fscher_data {
134 struct i2c_client client;
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400135 struct class_device *class_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 struct semaphore update_lock;
137 char valid; /* zero until following fields are valid */
138 unsigned long last_updated; /* in jiffies */
139
140 /* register values */
141 u8 revision; /* revision of chip */
142 u8 global_event; /* global event status */
143 u8 global_control; /* global control register */
144 u8 watchdog[3]; /* watchdog */
145 u8 volt[3]; /* 12, 5, battery voltage */
146 u8 temp_act[3]; /* temperature */
147 u8 temp_status[3]; /* status of sensor */
148 u8 fan_act[3]; /* fans revolutions per second */
149 u8 fan_status[3]; /* fan status */
150 u8 fan_min[3]; /* fan min value for rps */
151 u8 fan_ripple[3]; /* divider for rps */
152};
153
154/*
155 * Sysfs stuff
156 */
157
158#define sysfs_r(kind, sub, offset, reg) \
159static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \
Yani Ioannou30f74292005-05-17 06:41:35 -0400160static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \
161static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162{ \
163 struct fscher_data *data = fscher_update_device(dev); \
164 return show_##kind##sub(data, buf, (offset)); \
165}
166
167#define sysfs_w(kind, sub, offset, reg) \
168static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \
Yani Ioannou30f74292005-05-17 06:41:35 -0400169static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \
170static ssize_t set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171{ \
172 struct i2c_client *client = to_i2c_client(dev); \
173 struct fscher_data *data = i2c_get_clientdata(client); \
174 return set_##kind##sub(client, data, buf, count, (offset), reg); \
175}
176
177#define sysfs_rw_n(kind, sub, offset, reg) \
178sysfs_r(kind, sub, offset, reg) \
179sysfs_w(kind, sub, offset, reg) \
180static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub);
181
182#define sysfs_rw(kind, sub, reg) \
183sysfs_r(kind, sub, 0, reg) \
184sysfs_w(kind, sub, 0, reg) \
185static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub);
186
187#define sysfs_ro_n(kind, sub, offset, reg) \
188sysfs_r(kind, sub, offset, reg) \
189static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL);
190
191#define sysfs_ro(kind, sub, reg) \
192sysfs_r(kind, sub, 0, reg) \
193static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL);
194
195#define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \
196sysfs_rw_n(pwm, , offset, reg_min) \
197sysfs_rw_n(fan, _status, offset, reg_status) \
198sysfs_rw_n(fan, _div , offset, reg_ripple) \
199sysfs_ro_n(fan, _input , offset, reg_act)
200
201#define sysfs_temp(offset, reg_status, reg_act) \
202sysfs_rw_n(temp, _status, offset, reg_status) \
203sysfs_ro_n(temp, _input , offset, reg_act)
204
205#define sysfs_in(offset, reg_act) \
206sysfs_ro_n(in, _input, offset, reg_act)
207
208#define sysfs_revision(reg_revision) \
209sysfs_ro(revision, , reg_revision)
210
211#define sysfs_alarms(reg_events) \
212sysfs_ro(alarms, , reg_events)
213
214#define sysfs_control(reg_control) \
215sysfs_rw(control, , reg_control)
216
217#define sysfs_watchdog(reg_control, reg_status, reg_preset) \
218sysfs_rw(watchdog, _control, reg_control) \
219sysfs_rw(watchdog, _status , reg_status) \
220sysfs_rw(watchdog, _preset , reg_preset)
221
222sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN,
223 FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT)
224sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN,
225 FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT)
226sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN,
227 FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT)
228
229sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT)
230sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT)
231sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT)
232
233sysfs_in(0, FSCHER_REG_VOLT_12)
234sysfs_in(1, FSCHER_REG_VOLT_5)
235sysfs_in(2, FSCHER_REG_VOLT_BATT)
236
237sysfs_revision(FSCHER_REG_REVISION)
238sysfs_alarms(FSCHER_REG_EVENTS)
239sysfs_control(FSCHER_REG_CONTROL)
240sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET)
241
242#define device_create_file_fan(client, offset) \
243do { \
244 device_create_file(&client->dev, &dev_attr_fan##offset##_status); \
245 device_create_file(&client->dev, &dev_attr_pwm##offset); \
246 device_create_file(&client->dev, &dev_attr_fan##offset##_div); \
247 device_create_file(&client->dev, &dev_attr_fan##offset##_input); \
248} while (0)
249
250#define device_create_file_temp(client, offset) \
251do { \
252 device_create_file(&client->dev, &dev_attr_temp##offset##_status); \
253 device_create_file(&client->dev, &dev_attr_temp##offset##_input); \
254} while (0)
255
256#define device_create_file_in(client, offset) \
257do { \
258 device_create_file(&client->dev, &dev_attr_in##offset##_input); \
259} while (0)
260
261#define device_create_file_revision(client) \
262do { \
263 device_create_file(&client->dev, &dev_attr_revision); \
264} while (0)
265
266#define device_create_file_alarms(client) \
267do { \
268 device_create_file(&client->dev, &dev_attr_alarms); \
269} while (0)
270
271#define device_create_file_control(client) \
272do { \
273 device_create_file(&client->dev, &dev_attr_control); \
274} while (0)
275
276#define device_create_file_watchdog(client) \
277do { \
278 device_create_file(&client->dev, &dev_attr_watchdog_status); \
279 device_create_file(&client->dev, &dev_attr_watchdog_control); \
280 device_create_file(&client->dev, &dev_attr_watchdog_preset); \
281} while (0)
282
283/*
284 * Real code
285 */
286
287static int fscher_attach_adapter(struct i2c_adapter *adapter)
288{
289 if (!(adapter->class & I2C_CLASS_HWMON))
290 return 0;
Jean Delvare2ed2dc32005-07-31 21:42:02 +0200291 return i2c_probe(adapter, &addr_data, fscher_detect);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292}
293
294static int fscher_detect(struct i2c_adapter *adapter, int address, int kind)
295{
296 struct i2c_client *new_client;
297 struct fscher_data *data;
298 int err = 0;
299
300 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
301 goto exit;
302
303 /* OK. For now, we presume we have a valid client. We now create the
304 * client structure, even though we cannot fill it completely yet.
305 * But it allows us to access i2c_smbus_read_byte_data. */
Deepak Saxenaba9c2e82005-10-17 23:08:32 +0200306 if (!(data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 err = -ENOMEM;
308 goto exit;
309 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
311 /* The common I2C client data is placed right before the
312 * Hermes-specific data. */
313 new_client = &data->client;
314 i2c_set_clientdata(new_client, data);
315 new_client->addr = address;
316 new_client->adapter = adapter;
317 new_client->driver = &fscher_driver;
318 new_client->flags = 0;
319
320 /* Do the remaining detection unless force or force_fscher parameter */
321 if (kind < 0) {
322 if ((i2c_smbus_read_byte_data(new_client,
323 FSCHER_REG_IDENT_0) != 0x48) /* 'H' */
324 || (i2c_smbus_read_byte_data(new_client,
325 FSCHER_REG_IDENT_1) != 0x45) /* 'E' */
326 || (i2c_smbus_read_byte_data(new_client,
327 FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */
328 goto exit_free;
329 }
330
331 /* Fill in the remaining client fields and put it into the
332 * global list */
333 strlcpy(new_client->name, "fscher", I2C_NAME_SIZE);
334 data->valid = 0;
335 init_MUTEX(&data->update_lock);
336
337 /* Tell the I2C layer a new client has arrived */
338 if ((err = i2c_attach_client(new_client)))
339 goto exit_free;
340
341 fscher_init_client(new_client);
342
343 /* Register sysfs hooks */
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400344 data->class_dev = hwmon_device_register(&new_client->dev);
345 if (IS_ERR(data->class_dev)) {
346 err = PTR_ERR(data->class_dev);
347 goto exit_detach;
348 }
349
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 device_create_file_revision(new_client);
351 device_create_file_alarms(new_client);
352 device_create_file_control(new_client);
353 device_create_file_watchdog(new_client);
354
355 device_create_file_in(new_client, 0);
356 device_create_file_in(new_client, 1);
357 device_create_file_in(new_client, 2);
358
359 device_create_file_fan(new_client, 1);
360 device_create_file_fan(new_client, 2);
361 device_create_file_fan(new_client, 3);
362
363 device_create_file_temp(new_client, 1);
364 device_create_file_temp(new_client, 2);
365 device_create_file_temp(new_client, 3);
366
367 return 0;
368
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400369exit_detach:
370 i2c_detach_client(new_client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371exit_free:
372 kfree(data);
373exit:
374 return err;
375}
376
377static int fscher_detach_client(struct i2c_client *client)
378{
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400379 struct fscher_data *data = i2c_get_clientdata(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 int err;
381
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400382 hwmon_device_unregister(data->class_dev);
383
Jean Delvare7bef5592005-07-27 22:14:49 +0200384 if ((err = i2c_detach_client(client)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400387 kfree(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 return 0;
389}
390
391static int fscher_read_value(struct i2c_client *client, u8 reg)
392{
393 dev_dbg(&client->dev, "read reg 0x%02x\n", reg);
394
395 return i2c_smbus_read_byte_data(client, reg);
396}
397
398static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value)
399{
400 dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n",
401 reg, value);
402
403 return i2c_smbus_write_byte_data(client, reg, value);
404}
405
406/* Called when we have found a new FSC Hermes. */
407static void fscher_init_client(struct i2c_client *client)
408{
409 struct fscher_data *data = i2c_get_clientdata(client);
410
411 /* Read revision from chip */
412 data->revision = fscher_read_value(client, FSCHER_REG_REVISION);
413}
414
415static struct fscher_data *fscher_update_device(struct device *dev)
416{
417 struct i2c_client *client = to_i2c_client(dev);
418 struct fscher_data *data = i2c_get_clientdata(client);
419
420 down(&data->update_lock);
421
422 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
423
424 dev_dbg(&client->dev, "Starting fscher update\n");
425
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);
432
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);
436
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);
449
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);
453
454 data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE);
455
456 data->last_updated = jiffies;
457 data->valid = 1;
458 }
459
460 up(&data->update_lock);
461
462 return data;
463}
464
465
466
467#define FAN_INDEX_FROM_NUM(nr) ((nr) - 1)
468
469static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data,
470 const char *buf, size_t count, int nr, int reg)
471{
472 /* bits 0..1, 3..7 reserved => mask with 0x04 */
473 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04;
474
475 down(&data->update_lock);
476 data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v;
477 fscher_write_value(client, reg, v);
478 up(&data->update_lock);
479 return count;
480}
481
482static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr)
483{
484 /* bits 0..1, 3..7 reserved => mask with 0x04 */
485 return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04);
486}
487
488static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data,
489 const char *buf, size_t count, int nr, int reg)
490{
491 unsigned long v = simple_strtoul(buf, NULL, 10);
492
493 down(&data->update_lock);
494 data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v;
495 fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
496 up(&data->update_lock);
497 return count;
498}
499
500static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr)
501{
502 return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
503}
504
505static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data,
506 const char *buf, size_t count, int nr, int reg)
507{
508 /* supported values: 2, 4, 8 */
509 unsigned long v = simple_strtoul(buf, NULL, 10);
510
511 switch (v) {
512 case 2: v = 1; break;
513 case 4: v = 2; break;
514 case 8: v = 3; break;
515 default:
516 dev_err(&client->dev, "fan_div value %ld not "
517 "supported. Choose one of 2, 4 or 8!\n", v);
518 return -EINVAL;
519 }
520
521 down(&data->update_lock);
522
523 /* bits 2..7 reserved => mask with 0x03 */
524 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03;
525 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v;
526
527 fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]);
528 up(&data->update_lock);
529 return count;
530}
531
532static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr)
533{
534 /* bits 2..7 reserved => mask with 0x03 */
535 return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03));
536}
537
538#define RPM_FROM_REG(val) (val*60)
539
540static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr)
541{
542 return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)]));
543}
544
545
546
547#define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1)
548
549static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data,
550 const char *buf, size_t count, int nr, int reg)
551{
552 /* bits 2..7 reserved, 0 read only => mask with 0x02 */
553 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
554
555 down(&data->update_lock);
556 data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v;
557 fscher_write_value(client, reg, v);
558 up(&data->update_lock);
559 return count;
560}
561
562static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr)
563{
564 /* bits 2..7 reserved => mask with 0x03 */
565 return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03);
566}
567
568#define TEMP_FROM_REG(val) (((val) - 128) * 1000)
569
570static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr)
571{
572 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)]));
573}
574
575/*
576 * The final conversion is specified in sensors.conf, as it depends on
577 * mainboard specific values. We export the registers contents as
578 * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much
579 * sense per se, but it minimizes the conversions count and keeps the
580 * values within a usual range.
581 */
582#define VOLT_FROM_REG(val) ((val) * 10)
583
584static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr)
585{
586 return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr]));
587}
588
589
590
591static ssize_t show_revision(struct fscher_data *data, char *buf, int nr)
592{
593 return sprintf(buf, "%u\n", data->revision);
594}
595
596
597
598static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr)
599{
600 /* bits 2, 5..6 reserved => mask with 0x9b */
601 return sprintf(buf, "%u\n", data->global_event & 0x9b);
602}
603
604
605
606static ssize_t set_control(struct i2c_client *client, struct fscher_data *data,
607 const char *buf, size_t count, int nr, int reg)
608{
609 /* bits 1..7 reserved => mask with 0x01 */
610 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01;
611
612 down(&data->update_lock);
613 data->global_control &= ~v;
614 fscher_write_value(client, reg, v);
615 up(&data->update_lock);
616 return count;
617}
618
619static ssize_t show_control(struct fscher_data *data, char *buf, int nr)
620{
621 /* bits 1..7 reserved => mask with 0x01 */
622 return sprintf(buf, "%u\n", data->global_control & 0x01);
623}
624
625
626
627static ssize_t set_watchdog_control(struct i2c_client *client, struct
628 fscher_data *data, const char *buf, size_t count,
629 int nr, int reg)
630{
631 /* bits 0..3 reserved => mask with 0xf0 */
632 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0;
633
634 down(&data->update_lock);
635 data->watchdog[2] &= ~0xf0;
636 data->watchdog[2] |= v;
637 fscher_write_value(client, reg, data->watchdog[2]);
638 up(&data->update_lock);
639 return count;
640}
641
642static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr)
643{
644 /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */
645 return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0);
646}
647
648static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data,
649 const char *buf, size_t count, int nr, int reg)
650{
651 /* bits 0, 2..7 reserved => mask with 0x02 */
652 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
653
654 down(&data->update_lock);
655 data->watchdog[1] &= ~v;
656 fscher_write_value(client, reg, v);
657 up(&data->update_lock);
658 return count;
659}
660
661static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr)
662{
663 /* bits 0, 2..7 reserved => mask with 0x02 */
664 return sprintf(buf, "%u\n", data->watchdog[1] & 0x02);
665}
666
667static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data,
668 const char *buf, size_t count, int nr, int reg)
669{
670 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff;
671
672 down(&data->update_lock);
673 data->watchdog[0] = v;
674 fscher_write_value(client, reg, data->watchdog[0]);
675 up(&data->update_lock);
676 return count;
677}
678
679static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr)
680{
681 return sprintf(buf, "%u\n", data->watchdog[0]);
682}
683
684static int __init sensors_fscher_init(void)
685{
686 return i2c_add_driver(&fscher_driver);
687}
688
689static void __exit sensors_fscher_exit(void)
690{
691 i2c_del_driver(&fscher_driver);
692}
693
694MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>");
695MODULE_DESCRIPTION("FSC Hermes driver");
696MODULE_LICENSE("GPL");
697
698module_init(sensors_fscher_init);
699module_exit(sensors_fscher_exit);