blob: eef6061d786b4e3c397b6bf9445a2d835be2b427 [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 = {
121 .owner = THIS_MODULE,
122 .name = "fscher",
123 .id = I2C_DRIVERID_FSCHER,
124 .flags = I2C_DF_NOTIFY,
125 .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. */
306 if (!(data = kmalloc(sizeof(struct fscher_data), GFP_KERNEL))) {
307 err = -ENOMEM;
308 goto exit;
309 }
310 memset(data, 0, sizeof(struct fscher_data));
311
312 /* The common I2C client data is placed right before the
313 * Hermes-specific data. */
314 new_client = &data->client;
315 i2c_set_clientdata(new_client, data);
316 new_client->addr = address;
317 new_client->adapter = adapter;
318 new_client->driver = &fscher_driver;
319 new_client->flags = 0;
320
321 /* Do the remaining detection unless force or force_fscher parameter */
322 if (kind < 0) {
323 if ((i2c_smbus_read_byte_data(new_client,
324 FSCHER_REG_IDENT_0) != 0x48) /* 'H' */
325 || (i2c_smbus_read_byte_data(new_client,
326 FSCHER_REG_IDENT_1) != 0x45) /* 'E' */
327 || (i2c_smbus_read_byte_data(new_client,
328 FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */
329 goto exit_free;
330 }
331
332 /* Fill in the remaining client fields and put it into the
333 * global list */
334 strlcpy(new_client->name, "fscher", I2C_NAME_SIZE);
335 data->valid = 0;
336 init_MUTEX(&data->update_lock);
337
338 /* Tell the I2C layer a new client has arrived */
339 if ((err = i2c_attach_client(new_client)))
340 goto exit_free;
341
342 fscher_init_client(new_client);
343
344 /* Register sysfs hooks */
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400345 data->class_dev = hwmon_device_register(&new_client->dev);
346 if (IS_ERR(data->class_dev)) {
347 err = PTR_ERR(data->class_dev);
348 goto exit_detach;
349 }
350
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 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);
355
356 device_create_file_in(new_client, 0);
357 device_create_file_in(new_client, 1);
358 device_create_file_in(new_client, 2);
359
360 device_create_file_fan(new_client, 1);
361 device_create_file_fan(new_client, 2);
362 device_create_file_fan(new_client, 3);
363
364 device_create_file_temp(new_client, 1);
365 device_create_file_temp(new_client, 2);
366 device_create_file_temp(new_client, 3);
367
368 return 0;
369
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400370exit_detach:
371 i2c_detach_client(new_client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372exit_free:
373 kfree(data);
374exit:
375 return err;
376}
377
378static int fscher_detach_client(struct i2c_client *client)
379{
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400380 struct fscher_data *data = i2c_get_clientdata(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 int err;
382
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400383 hwmon_device_unregister(data->class_dev);
384
Jean Delvare7bef5592005-07-27 22:14:49 +0200385 if ((err = i2c_detach_client(client)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400388 kfree(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 return 0;
390}
391
392static int fscher_read_value(struct i2c_client *client, u8 reg)
393{
394 dev_dbg(&client->dev, "read reg 0x%02x\n", reg);
395
396 return i2c_smbus_read_byte_data(client, reg);
397}
398
399static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value)
400{
401 dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n",
402 reg, value);
403
404 return i2c_smbus_write_byte_data(client, reg, value);
405}
406
407/* Called when we have found a new FSC Hermes. */
408static void fscher_init_client(struct i2c_client *client)
409{
410 struct fscher_data *data = i2c_get_clientdata(client);
411
412 /* Read revision from chip */
413 data->revision = fscher_read_value(client, FSCHER_REG_REVISION);
414}
415
416static struct fscher_data *fscher_update_device(struct device *dev)
417{
418 struct i2c_client *client = to_i2c_client(dev);
419 struct fscher_data *data = i2c_get_clientdata(client);
420
421 down(&data->update_lock);
422
423 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
424
425 dev_dbg(&client->dev, "Starting fscher update\n");
426
427 data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT);
428 data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT);
429 data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT);
430 data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE);
431 data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE);
432 data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE);
433
434 data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12);
435 data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5);
436 data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT);
437
438 data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT);
439 data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT);
440 data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT);
441 data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE);
442 data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE);
443 data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE);
444 data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN);
445 data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN);
446 data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN);
447 data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE);
448 data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE);
449 data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE);
450
451 data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET);
452 data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE);
453 data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL);
454
455 data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE);
456
457 data->last_updated = jiffies;
458 data->valid = 1;
459 }
460
461 up(&data->update_lock);
462
463 return data;
464}
465
466
467
468#define FAN_INDEX_FROM_NUM(nr) ((nr) - 1)
469
470static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data,
471 const char *buf, size_t count, int nr, int reg)
472{
473 /* bits 0..1, 3..7 reserved => mask with 0x04 */
474 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04;
475
476 down(&data->update_lock);
477 data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v;
478 fscher_write_value(client, reg, v);
479 up(&data->update_lock);
480 return count;
481}
482
483static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr)
484{
485 /* bits 0..1, 3..7 reserved => mask with 0x04 */
486 return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04);
487}
488
489static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data,
490 const char *buf, size_t count, int nr, int reg)
491{
492 unsigned long v = simple_strtoul(buf, NULL, 10);
493
494 down(&data->update_lock);
495 data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v;
496 fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
497 up(&data->update_lock);
498 return count;
499}
500
501static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr)
502{
503 return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
504}
505
506static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data,
507 const char *buf, size_t count, int nr, int reg)
508{
509 /* supported values: 2, 4, 8 */
510 unsigned long v = simple_strtoul(buf, NULL, 10);
511
512 switch (v) {
513 case 2: v = 1; break;
514 case 4: v = 2; break;
515 case 8: v = 3; break;
516 default:
517 dev_err(&client->dev, "fan_div value %ld not "
518 "supported. Choose one of 2, 4 or 8!\n", v);
519 return -EINVAL;
520 }
521
522 down(&data->update_lock);
523
524 /* bits 2..7 reserved => mask with 0x03 */
525 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03;
526 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v;
527
528 fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]);
529 up(&data->update_lock);
530 return count;
531}
532
533static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr)
534{
535 /* bits 2..7 reserved => mask with 0x03 */
536 return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03));
537}
538
539#define RPM_FROM_REG(val) (val*60)
540
541static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr)
542{
543 return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)]));
544}
545
546
547
548#define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1)
549
550static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data,
551 const char *buf, size_t count, int nr, int reg)
552{
553 /* bits 2..7 reserved, 0 read only => mask with 0x02 */
554 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
555
556 down(&data->update_lock);
557 data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v;
558 fscher_write_value(client, reg, v);
559 up(&data->update_lock);
560 return count;
561}
562
563static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr)
564{
565 /* bits 2..7 reserved => mask with 0x03 */
566 return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03);
567}
568
569#define TEMP_FROM_REG(val) (((val) - 128) * 1000)
570
571static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr)
572{
573 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)]));
574}
575
576/*
577 * The final conversion is specified in sensors.conf, as it depends on
578 * mainboard specific values. We export the registers contents as
579 * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much
580 * sense per se, but it minimizes the conversions count and keeps the
581 * values within a usual range.
582 */
583#define VOLT_FROM_REG(val) ((val) * 10)
584
585static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr)
586{
587 return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr]));
588}
589
590
591
592static ssize_t show_revision(struct fscher_data *data, char *buf, int nr)
593{
594 return sprintf(buf, "%u\n", data->revision);
595}
596
597
598
599static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr)
600{
601 /* bits 2, 5..6 reserved => mask with 0x9b */
602 return sprintf(buf, "%u\n", data->global_event & 0x9b);
603}
604
605
606
607static ssize_t set_control(struct i2c_client *client, struct fscher_data *data,
608 const char *buf, size_t count, int nr, int reg)
609{
610 /* bits 1..7 reserved => mask with 0x01 */
611 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01;
612
613 down(&data->update_lock);
614 data->global_control &= ~v;
615 fscher_write_value(client, reg, v);
616 up(&data->update_lock);
617 return count;
618}
619
620static ssize_t show_control(struct fscher_data *data, char *buf, int nr)
621{
622 /* bits 1..7 reserved => mask with 0x01 */
623 return sprintf(buf, "%u\n", data->global_control & 0x01);
624}
625
626
627
628static ssize_t set_watchdog_control(struct i2c_client *client, struct
629 fscher_data *data, const char *buf, size_t count,
630 int nr, int reg)
631{
632 /* bits 0..3 reserved => mask with 0xf0 */
633 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0;
634
635 down(&data->update_lock);
636 data->watchdog[2] &= ~0xf0;
637 data->watchdog[2] |= v;
638 fscher_write_value(client, reg, data->watchdog[2]);
639 up(&data->update_lock);
640 return count;
641}
642
643static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr)
644{
645 /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */
646 return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0);
647}
648
649static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data,
650 const char *buf, size_t count, int nr, int reg)
651{
652 /* bits 0, 2..7 reserved => mask with 0x02 */
653 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
654
655 down(&data->update_lock);
656 data->watchdog[1] &= ~v;
657 fscher_write_value(client, reg, v);
658 up(&data->update_lock);
659 return count;
660}
661
662static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr)
663{
664 /* bits 0, 2..7 reserved => mask with 0x02 */
665 return sprintf(buf, "%u\n", data->watchdog[1] & 0x02);
666}
667
668static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data,
669 const char *buf, size_t count, int nr, int reg)
670{
671 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff;
672
673 down(&data->update_lock);
674 data->watchdog[0] = v;
675 fscher_write_value(client, reg, data->watchdog[0]);
676 up(&data->update_lock);
677 return count;
678}
679
680static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr)
681{
682 return sprintf(buf, "%u\n", data->watchdog[0]);
683}
684
685static int __init sensors_fscher_init(void)
686{
687 return i2c_add_driver(&fscher_driver);
688}
689
690static void __exit sensors_fscher_exit(void)
691{
692 i2c_del_driver(&fscher_driver);
693}
694
695MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>");
696MODULE_DESCRIPTION("FSC Hermes driver");
697MODULE_LICENSE("GPL");
698
699module_init(sensors_fscher_init);
700module_exit(sensors_fscher_exit);