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[PATCH] Driver Core: drivers/base - drivers/i2c/chips/adm1026.c: update device attrib...
[mirror_ubuntu-artful-kernel.git] / drivers / i2c / chips / 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
29#include <linux/config.h>
30#include <linux/module.h>
31#include <linux/init.h>
32#include <linux/slab.h>
33#include <linux/jiffies.h>
34#include <linux/i2c.h>
35#include <linux/i2c-sensor.h>
36
37/*
38 * Addresses to scan
39 */
40
41static unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END };
42static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
43
44/*
45 * Insmod parameters
46 */
47
48SENSORS_INSMOD_1(fscher);
49
50/*
51 * The FSCHER registers
52 */
53
54/* chip identification */
55#define FSCHER_REG_IDENT_0 0x00
56#define FSCHER_REG_IDENT_1 0x01
57#define FSCHER_REG_IDENT_2 0x02
58#define FSCHER_REG_REVISION 0x03
59
60/* global control and status */
61#define FSCHER_REG_EVENT_STATE 0x04
62#define FSCHER_REG_CONTROL 0x05
63
64/* watchdog */
65#define FSCHER_REG_WDOG_PRESET 0x28
66#define FSCHER_REG_WDOG_STATE 0x23
67#define FSCHER_REG_WDOG_CONTROL 0x21
68
69/* fan 0 */
70#define FSCHER_REG_FAN0_MIN 0x55
71#define FSCHER_REG_FAN0_ACT 0x0e
72#define FSCHER_REG_FAN0_STATE 0x0d
73#define FSCHER_REG_FAN0_RIPPLE 0x0f
74
75/* fan 1 */
76#define FSCHER_REG_FAN1_MIN 0x65
77#define FSCHER_REG_FAN1_ACT 0x6b
78#define FSCHER_REG_FAN1_STATE 0x62
79#define FSCHER_REG_FAN1_RIPPLE 0x6f
80
81/* fan 2 */
82#define FSCHER_REG_FAN2_MIN 0xb5
83#define FSCHER_REG_FAN2_ACT 0xbb
84#define FSCHER_REG_FAN2_STATE 0xb2
85#define FSCHER_REG_FAN2_RIPPLE 0xbf
86
87/* voltage supervision */
88#define FSCHER_REG_VOLT_12 0x45
89#define FSCHER_REG_VOLT_5 0x42
90#define FSCHER_REG_VOLT_BATT 0x48
91
92/* temperature 0 */
93#define FSCHER_REG_TEMP0_ACT 0x64
94#define FSCHER_REG_TEMP0_STATE 0x71
95
96/* temperature 1 */
97#define FSCHER_REG_TEMP1_ACT 0x32
98#define FSCHER_REG_TEMP1_STATE 0x81
99
100/* temperature 2 */
101#define FSCHER_REG_TEMP2_ACT 0x35
102#define FSCHER_REG_TEMP2_STATE 0x91
103
104/*
105 * Functions declaration
106 */
107
108static int fscher_attach_adapter(struct i2c_adapter *adapter);
109static int fscher_detect(struct i2c_adapter *adapter, int address, int kind);
110static int fscher_detach_client(struct i2c_client *client);
111static struct fscher_data *fscher_update_device(struct device *dev);
112static void fscher_init_client(struct i2c_client *client);
113
114static int fscher_read_value(struct i2c_client *client, u8 reg);
115static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value);
116
117/*
118 * Driver data (common to all clients)
119 */
120
121static struct i2c_driver fscher_driver = {
122 .owner = THIS_MODULE,
123 .name = "fscher",
124 .id = I2C_DRIVERID_FSCHER,
125 .flags = I2C_DF_NOTIFY,
126 .attach_adapter = fscher_attach_adapter,
127 .detach_client = fscher_detach_client,
128};
129
130/*
131 * Client data (each client gets its own)
132 */
133
134struct fscher_data {
135 struct i2c_client client;
136 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); \
160static ssize_t show_##kind##offset##sub (struct device *, char *); \
161static ssize_t show_##kind##offset##sub (struct device *dev, char *buf) \
162{ \
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); \
169static ssize_t set_##kind##offset##sub (struct device *, const char *, size_t); \
170static ssize_t set_##kind##offset##sub (struct device *dev, const char *buf, size_t count) \
171{ \
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;
291 return i2c_detect(adapter, &addr_data, fscher_detect);
292}
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 */
345 device_create_file_revision(new_client);
346 device_create_file_alarms(new_client);
347 device_create_file_control(new_client);
348 device_create_file_watchdog(new_client);
349
350 device_create_file_in(new_client, 0);
351 device_create_file_in(new_client, 1);
352 device_create_file_in(new_client, 2);
353
354 device_create_file_fan(new_client, 1);
355 device_create_file_fan(new_client, 2);
356 device_create_file_fan(new_client, 3);
357
358 device_create_file_temp(new_client, 1);
359 device_create_file_temp(new_client, 2);
360 device_create_file_temp(new_client, 3);
361
362 return 0;
363
364exit_free:
365 kfree(data);
366exit:
367 return err;
368}
369
370static int fscher_detach_client(struct i2c_client *client)
371{
372 int err;
373
374 if ((err = i2c_detach_client(client))) {
375 dev_err(&client->dev, "Client deregistration failed, "
376 "client not detached.\n");
377 return err;
378 }
379
380 kfree(i2c_get_clientdata(client));
381 return 0;
382}
383
384static int fscher_read_value(struct i2c_client *client, u8 reg)
385{
386 dev_dbg(&client->dev, "read reg 0x%02x\n", reg);
387
388 return i2c_smbus_read_byte_data(client, reg);
389}
390
391static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value)
392{
393 dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n",
394 reg, value);
395
396 return i2c_smbus_write_byte_data(client, reg, value);
397}
398
399/* Called when we have found a new FSC Hermes. */
400static void fscher_init_client(struct i2c_client *client)
401{
402 struct fscher_data *data = i2c_get_clientdata(client);
403
404 /* Read revision from chip */
405 data->revision = fscher_read_value(client, FSCHER_REG_REVISION);
406}
407
408static struct fscher_data *fscher_update_device(struct device *dev)
409{
410 struct i2c_client *client = to_i2c_client(dev);
411 struct fscher_data *data = i2c_get_clientdata(client);
412
413 down(&data->update_lock);
414
415 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
416
417 dev_dbg(&client->dev, "Starting fscher update\n");
418
419 data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT);
420 data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT);
421 data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT);
422 data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE);
423 data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE);
424 data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE);
425
426 data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12);
427 data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5);
428 data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT);
429
430 data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT);
431 data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT);
432 data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT);
433 data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE);
434 data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE);
435 data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE);
436 data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN);
437 data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN);
438 data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN);
439 data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE);
440 data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE);
441 data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE);
442
443 data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET);
444 data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE);
445 data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL);
446
447 data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE);
448
449 data->last_updated = jiffies;
450 data->valid = 1;
451 }
452
453 up(&data->update_lock);
454
455 return data;
456}
457
458
459
460#define FAN_INDEX_FROM_NUM(nr) ((nr) - 1)
461
462static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data,
463 const char *buf, size_t count, int nr, int reg)
464{
465 /* bits 0..1, 3..7 reserved => mask with 0x04 */
466 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04;
467
468 down(&data->update_lock);
469 data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v;
470 fscher_write_value(client, reg, v);
471 up(&data->update_lock);
472 return count;
473}
474
475static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr)
476{
477 /* bits 0..1, 3..7 reserved => mask with 0x04 */
478 return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04);
479}
480
481static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data,
482 const char *buf, size_t count, int nr, int reg)
483{
484 unsigned long v = simple_strtoul(buf, NULL, 10);
485
486 down(&data->update_lock);
487 data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v;
488 fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
489 up(&data->update_lock);
490 return count;
491}
492
493static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr)
494{
495 return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
496}
497
498static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data,
499 const char *buf, size_t count, int nr, int reg)
500{
501 /* supported values: 2, 4, 8 */
502 unsigned long v = simple_strtoul(buf, NULL, 10);
503
504 switch (v) {
505 case 2: v = 1; break;
506 case 4: v = 2; break;
507 case 8: v = 3; break;
508 default:
509 dev_err(&client->dev, "fan_div value %ld not "
510 "supported. Choose one of 2, 4 or 8!\n", v);
511 return -EINVAL;
512 }
513
514 down(&data->update_lock);
515
516 /* bits 2..7 reserved => mask with 0x03 */
517 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03;
518 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v;
519
520 fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]);
521 up(&data->update_lock);
522 return count;
523}
524
525static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr)
526{
527 /* bits 2..7 reserved => mask with 0x03 */
528 return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03));
529}
530
531#define RPM_FROM_REG(val) (val*60)
532
533static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr)
534{
535 return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)]));
536}
537
538
539
540#define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1)
541
542static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data,
543 const char *buf, size_t count, int nr, int reg)
544{
545 /* bits 2..7 reserved, 0 read only => mask with 0x02 */
546 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
547
548 down(&data->update_lock);
549 data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v;
550 fscher_write_value(client, reg, v);
551 up(&data->update_lock);
552 return count;
553}
554
555static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr)
556{
557 /* bits 2..7 reserved => mask with 0x03 */
558 return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03);
559}
560
561#define TEMP_FROM_REG(val) (((val) - 128) * 1000)
562
563static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr)
564{
565 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)]));
566}
567
568/*
569 * The final conversion is specified in sensors.conf, as it depends on
570 * mainboard specific values. We export the registers contents as
571 * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much
572 * sense per se, but it minimizes the conversions count and keeps the
573 * values within a usual range.
574 */
575#define VOLT_FROM_REG(val) ((val) * 10)
576
577static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr)
578{
579 return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr]));
580}
581
582
583
584static ssize_t show_revision(struct fscher_data *data, char *buf, int nr)
585{
586 return sprintf(buf, "%u\n", data->revision);
587}
588
589
590
591static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr)
592{
593 /* bits 2, 5..6 reserved => mask with 0x9b */
594 return sprintf(buf, "%u\n", data->global_event & 0x9b);
595}
596
597
598
599static ssize_t set_control(struct i2c_client *client, struct fscher_data *data,
600 const char *buf, size_t count, int nr, int reg)
601{
602 /* bits 1..7 reserved => mask with 0x01 */
603 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01;
604
605 down(&data->update_lock);
606 data->global_control &= ~v;
607 fscher_write_value(client, reg, v);
608 up(&data->update_lock);
609 return count;
610}
611
612static ssize_t show_control(struct fscher_data *data, char *buf, int nr)
613{
614 /* bits 1..7 reserved => mask with 0x01 */
615 return sprintf(buf, "%u\n", data->global_control & 0x01);
616}
617
618
619
620static ssize_t set_watchdog_control(struct i2c_client *client, struct
621 fscher_data *data, const char *buf, size_t count,
622 int nr, int reg)
623{
624 /* bits 0..3 reserved => mask with 0xf0 */
625 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0;
626
627 down(&data->update_lock);
628 data->watchdog[2] &= ~0xf0;
629 data->watchdog[2] |= v;
630 fscher_write_value(client, reg, data->watchdog[2]);
631 up(&data->update_lock);
632 return count;
633}
634
635static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr)
636{
637 /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */
638 return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0);
639}
640
641static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data,
642 const char *buf, size_t count, int nr, int reg)
643{
644 /* bits 0, 2..7 reserved => mask with 0x02 */
645 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
646
647 down(&data->update_lock);
648 data->watchdog[1] &= ~v;
649 fscher_write_value(client, reg, v);
650 up(&data->update_lock);
651 return count;
652}
653
654static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr)
655{
656 /* bits 0, 2..7 reserved => mask with 0x02 */
657 return sprintf(buf, "%u\n", data->watchdog[1] & 0x02);
658}
659
660static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data,
661 const char *buf, size_t count, int nr, int reg)
662{
663 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff;
664
665 down(&data->update_lock);
666 data->watchdog[0] = v;
667 fscher_write_value(client, reg, data->watchdog[0]);
668 up(&data->update_lock);
669 return count;
670}
671
672static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr)
673{
674 return sprintf(buf, "%u\n", data->watchdog[0]);
675}
676
677static int __init sensors_fscher_init(void)
678{
679 return i2c_add_driver(&fscher_driver);
680}
681
682static void __exit sensors_fscher_exit(void)
683{
684 i2c_del_driver(&fscher_driver);
685}
686
687MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>");
688MODULE_DESCRIPTION("FSC Hermes driver");
689MODULE_LICENSE("GPL");
690
691module_init(sensors_fscher_init);
692module_exit(sensors_fscher_exit);
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