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authorJean Delvare <khali@linux-fr.org>2009-09-23 16:59:42 -0400
committerJean Delvare <khali@linux-fr.org>2009-09-23 16:59:42 -0400
commit91f17e02a224dc649eaffc8e0bca6db85efb9cd7 (patch)
tree5f538b6afab29f1e63cabdfa42a93d9a14e9d4d8 /drivers/hwmon/fscher.c
parent49dc9efed05ad3e49000097ce1ec31cd3bbc909b (diff)
hwmon: Delete deprecated FSC drivers
The legacy fscpos and fscher drivers have been replaced by the unified fschmd driver. The transition period is over now, we can delete them. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/hwmon/fscher.c')
-rw-r--r--drivers/hwmon/fscher.c680
1 files changed, 0 insertions, 680 deletions
diff --git a/drivers/hwmon/fscher.c b/drivers/hwmon/fscher.c
deleted file mode 100644
index 12c70e402cb2..000000000000
--- a/drivers/hwmon/fscher.c
+++ /dev/null
@@ -1,680 +0,0 @@
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/module.h>
30#include <linux/init.h>
31#include <linux/slab.h>
32#include <linux/jiffies.h>
33#include <linux/i2c.h>
34#include <linux/hwmon.h>
35#include <linux/err.h>
36#include <linux/mutex.h>
37#include <linux/sysfs.h>
38
39/*
40 * Addresses to scan
41 */
42
43static const unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END };
44
45/*
46 * Insmod parameters
47 */
48
49I2C_CLIENT_INSMOD_1(fscher);
50
51/*
52 * The FSCHER registers
53 */
54
55/* chip identification */
56#define FSCHER_REG_IDENT_0 0x00
57#define FSCHER_REG_IDENT_1 0x01
58#define FSCHER_REG_IDENT_2 0x02
59#define FSCHER_REG_REVISION 0x03
60
61/* global control and status */
62#define FSCHER_REG_EVENT_STATE 0x04
63#define FSCHER_REG_CONTROL 0x05
64
65/* watchdog */
66#define FSCHER_REG_WDOG_PRESET 0x28
67#define FSCHER_REG_WDOG_STATE 0x23
68#define FSCHER_REG_WDOG_CONTROL 0x21
69
70/* fan 0 */
71#define FSCHER_REG_FAN0_MIN 0x55
72#define FSCHER_REG_FAN0_ACT 0x0e
73#define FSCHER_REG_FAN0_STATE 0x0d
74#define FSCHER_REG_FAN0_RIPPLE 0x0f
75
76/* fan 1 */
77#define FSCHER_REG_FAN1_MIN 0x65
78#define FSCHER_REG_FAN1_ACT 0x6b
79#define FSCHER_REG_FAN1_STATE 0x62
80#define FSCHER_REG_FAN1_RIPPLE 0x6f
81
82/* fan 2 */
83#define FSCHER_REG_FAN2_MIN 0xb5
84#define FSCHER_REG_FAN2_ACT 0xbb
85#define FSCHER_REG_FAN2_STATE 0xb2
86#define FSCHER_REG_FAN2_RIPPLE 0xbf
87
88/* voltage supervision */
89#define FSCHER_REG_VOLT_12 0x45
90#define FSCHER_REG_VOLT_5 0x42
91#define FSCHER_REG_VOLT_BATT 0x48
92
93/* temperature 0 */
94#define FSCHER_REG_TEMP0_ACT 0x64
95#define FSCHER_REG_TEMP0_STATE 0x71
96
97/* temperature 1 */
98#define FSCHER_REG_TEMP1_ACT 0x32
99#define FSCHER_REG_TEMP1_STATE 0x81
100
101/* temperature 2 */
102#define FSCHER_REG_TEMP2_ACT 0x35
103#define FSCHER_REG_TEMP2_STATE 0x91
104
105/*
106 * Functions declaration
107 */
108
109static int fscher_probe(struct i2c_client *client,
110 const struct i2c_device_id *id);
111static int fscher_detect(struct i2c_client *client, int kind,
112 struct i2c_board_info *info);
113static int fscher_remove(struct i2c_client *client);
114static struct fscher_data *fscher_update_device(struct device *dev);
115static void fscher_init_client(struct i2c_client *client);
116
117static int fscher_read_value(struct i2c_client *client, u8 reg);
118static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value);
119
120/*
121 * Driver data (common to all clients)
122 */
123
124static const struct i2c_device_id fscher_id[] = {
125 { "fscher", fscher },
126 { }
127};
128
129static struct i2c_driver fscher_driver = {
130 .class = I2C_CLASS_HWMON,
131 .driver = {
132 .name = "fscher",
133 },
134 .probe = fscher_probe,
135 .remove = fscher_remove,
136 .id_table = fscher_id,
137 .detect = fscher_detect,
138 .address_data = &addr_data,
139};
140
141/*
142 * Client data (each client gets its own)
143 */
144
145struct fscher_data {
146 struct device *hwmon_dev;
147 struct mutex update_lock;
148 char valid; /* zero until following fields are valid */
149 unsigned long last_updated; /* in jiffies */
150
151 /* register values */
152 u8 revision; /* revision of chip */
153 u8 global_event; /* global event status */
154 u8 global_control; /* global control register */
155 u8 watchdog[3]; /* watchdog */
156 u8 volt[3]; /* 12, 5, battery voltage */
157 u8 temp_act[3]; /* temperature */
158 u8 temp_status[3]; /* status of sensor */
159 u8 fan_act[3]; /* fans revolutions per second */
160 u8 fan_status[3]; /* fan status */
161 u8 fan_min[3]; /* fan min value for rps */
162 u8 fan_ripple[3]; /* divider for rps */
163};
164
165/*
166 * Sysfs stuff
167 */
168
169#define sysfs_r(kind, sub, offset, reg) \
170static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \
171static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \
172static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \
173{ \
174 struct fscher_data *data = fscher_update_device(dev); \
175 return show_##kind##sub(data, buf, (offset)); \
176}
177
178#define sysfs_w(kind, sub, offset, reg) \
179static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \
180static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \
181static ssize_t set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
182{ \
183 struct i2c_client *client = to_i2c_client(dev); \
184 struct fscher_data *data = i2c_get_clientdata(client); \
185 return set_##kind##sub(client, data, buf, count, (offset), reg); \
186}
187
188#define sysfs_rw_n(kind, sub, offset, reg) \
189sysfs_r(kind, sub, offset, reg) \
190sysfs_w(kind, sub, offset, reg) \
191static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub);
192
193#define sysfs_rw(kind, sub, reg) \
194sysfs_r(kind, sub, 0, reg) \
195sysfs_w(kind, sub, 0, reg) \
196static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub);
197
198#define sysfs_ro_n(kind, sub, offset, reg) \
199sysfs_r(kind, sub, offset, reg) \
200static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL);
201
202#define sysfs_ro(kind, sub, reg) \
203sysfs_r(kind, sub, 0, reg) \
204static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL);
205
206#define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \
207sysfs_rw_n(pwm, , offset, reg_min) \
208sysfs_rw_n(fan, _status, offset, reg_status) \
209sysfs_rw_n(fan, _div , offset, reg_ripple) \
210sysfs_ro_n(fan, _input , offset, reg_act)
211
212#define sysfs_temp(offset, reg_status, reg_act) \
213sysfs_rw_n(temp, _status, offset, reg_status) \
214sysfs_ro_n(temp, _input , offset, reg_act)
215
216#define sysfs_in(offset, reg_act) \
217sysfs_ro_n(in, _input, offset, reg_act)
218
219#define sysfs_revision(reg_revision) \
220sysfs_ro(revision, , reg_revision)
221
222#define sysfs_alarms(reg_events) \
223sysfs_ro(alarms, , reg_events)
224
225#define sysfs_control(reg_control) \
226sysfs_rw(control, , reg_control)
227
228#define sysfs_watchdog(reg_control, reg_status, reg_preset) \
229sysfs_rw(watchdog, _control, reg_control) \
230sysfs_rw(watchdog, _status , reg_status) \
231sysfs_rw(watchdog, _preset , reg_preset)
232
233sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN,
234 FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT)
235sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN,
236 FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT)
237sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN,
238 FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT)
239
240sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT)
241sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT)
242sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT)
243
244sysfs_in(0, FSCHER_REG_VOLT_12)
245sysfs_in(1, FSCHER_REG_VOLT_5)
246sysfs_in(2, FSCHER_REG_VOLT_BATT)
247
248sysfs_revision(FSCHER_REG_REVISION)
249sysfs_alarms(FSCHER_REG_EVENTS)
250sysfs_control(FSCHER_REG_CONTROL)
251sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET)
252
253static struct attribute *fscher_attributes[] = {
254 &dev_attr_revision.attr,
255 &dev_attr_alarms.attr,
256 &dev_attr_control.attr,
257
258 &dev_attr_watchdog_status.attr,
259 &dev_attr_watchdog_control.attr,
260 &dev_attr_watchdog_preset.attr,
261
262 &dev_attr_in0_input.attr,
263 &dev_attr_in1_input.attr,
264 &dev_attr_in2_input.attr,
265
266 &dev_attr_fan1_status.attr,
267 &dev_attr_fan1_div.attr,
268 &dev_attr_fan1_input.attr,
269 &dev_attr_pwm1.attr,
270 &dev_attr_fan2_status.attr,
271 &dev_attr_fan2_div.attr,
272 &dev_attr_fan2_input.attr,
273 &dev_attr_pwm2.attr,
274 &dev_attr_fan3_status.attr,
275 &dev_attr_fan3_div.attr,
276 &dev_attr_fan3_input.attr,
277 &dev_attr_pwm3.attr,
278
279 &dev_attr_temp1_status.attr,
280 &dev_attr_temp1_input.attr,
281 &dev_attr_temp2_status.attr,
282 &dev_attr_temp2_input.attr,
283 &dev_attr_temp3_status.attr,
284 &dev_attr_temp3_input.attr,
285 NULL
286};
287
288static const struct attribute_group fscher_group = {
289 .attrs = fscher_attributes,
290};
291
292/*
293 * Real code
294 */
295
296/* Return 0 if detection is successful, -ENODEV otherwise */
297static int fscher_detect(struct i2c_client *new_client, int kind,
298 struct i2c_board_info *info)
299{
300 struct i2c_adapter *adapter = new_client->adapter;
301
302 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
303 return -ENODEV;
304
305 /* Do the remaining detection unless force or force_fscher parameter */
306 if (kind < 0) {
307 if ((i2c_smbus_read_byte_data(new_client,
308 FSCHER_REG_IDENT_0) != 0x48) /* 'H' */
309 || (i2c_smbus_read_byte_data(new_client,
310 FSCHER_REG_IDENT_1) != 0x45) /* 'E' */
311 || (i2c_smbus_read_byte_data(new_client,
312 FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */
313 return -ENODEV;
314 }
315
316 strlcpy(info->type, "fscher", I2C_NAME_SIZE);
317
318 return 0;
319}
320
321static int fscher_probe(struct i2c_client *new_client,
322 const struct i2c_device_id *id)
323{
324 struct fscher_data *data;
325 int err;
326
327 data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL);
328 if (!data) {
329 err = -ENOMEM;
330 goto exit;
331 }
332
333 i2c_set_clientdata(new_client, data);
334 data->valid = 0;
335 mutex_init(&data->update_lock);
336
337 fscher_init_client(new_client);
338
339 /* Register sysfs hooks */
340 if ((err = sysfs_create_group(&new_client->dev.kobj, &fscher_group)))
341 goto exit_free;
342
343 data->hwmon_dev = hwmon_device_register(&new_client->dev);
344 if (IS_ERR(data->hwmon_dev)) {
345 err = PTR_ERR(data->hwmon_dev);
346 goto exit_remove_files;
347 }
348
349 return 0;
350
351exit_remove_files:
352 sysfs_remove_group(&new_client->dev.kobj, &fscher_group);
353exit_free:
354 kfree(data);
355exit:
356 return err;
357}
358
359static int fscher_remove(struct i2c_client *client)
360{
361 struct fscher_data *data = i2c_get_clientdata(client);
362
363 hwmon_device_unregister(data->hwmon_dev);
364 sysfs_remove_group(&client->dev.kobj, &fscher_group);
365
366 kfree(data);
367 return 0;
368}
369
370static int fscher_read_value(struct i2c_client *client, u8 reg)
371{
372 dev_dbg(&client->dev, "read reg 0x%02x\n", reg);
373
374 return i2c_smbus_read_byte_data(client, reg);
375}
376
377static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value)
378{
379 dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n",
380 reg, value);
381
382 return i2c_smbus_write_byte_data(client, reg, value);
383}
384
385/* Called when we have found a new FSC Hermes. */
386static void fscher_init_client(struct i2c_client *client)
387{
388 struct fscher_data *data = i2c_get_clientdata(client);
389
390 /* Read revision from chip */
391 data->revision = fscher_read_value(client, FSCHER_REG_REVISION);
392}
393
394static struct fscher_data *fscher_update_device(struct device *dev)
395{
396 struct i2c_client *client = to_i2c_client(dev);
397 struct fscher_data *data = i2c_get_clientdata(client);
398
399 mutex_lock(&data->update_lock);
400
401 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
402
403 dev_dbg(&client->dev, "Starting fscher update\n");
404
405 data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT);
406 data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT);
407 data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT);
408 data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE);
409 data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE);
410 data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE);
411
412 data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12);
413 data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5);
414 data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT);
415
416 data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT);
417 data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT);
418 data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT);
419 data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE);
420 data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE);
421 data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE);
422 data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN);
423 data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN);
424 data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN);
425 data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE);
426 data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE);
427 data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE);
428
429 data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET);
430 data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE);
431 data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL);
432
433 data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE);
434 data->global_control = fscher_read_value(client,
435 FSCHER_REG_CONTROL);
436
437 data->last_updated = jiffies;
438 data->valid = 1;
439 }
440
441 mutex_unlock(&data->update_lock);
442
443 return data;
444}
445
446
447
448#define FAN_INDEX_FROM_NUM(nr) ((nr) - 1)
449
450static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data,
451 const char *buf, size_t count, int nr, int reg)
452{
453 /* bits 0..1, 3..7 reserved => mask with 0x04 */
454 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04;
455
456 mutex_lock(&data->update_lock);
457 data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v;
458 fscher_write_value(client, reg, v);
459 mutex_unlock(&data->update_lock);
460 return count;
461}
462
463static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr)
464{
465 /* bits 0..1, 3..7 reserved => mask with 0x04 */
466 return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04);
467}
468
469static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data,
470 const char *buf, size_t count, int nr, int reg)
471{
472 unsigned long v = simple_strtoul(buf, NULL, 10);
473
474 mutex_lock(&data->update_lock);
475 data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v;
476 fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
477 mutex_unlock(&data->update_lock);
478 return count;
479}
480
481static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr)
482{
483 return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
484}
485
486static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data,
487 const char *buf, size_t count, int nr, int reg)
488{
489 /* supported values: 2, 4, 8 */
490 unsigned long v = simple_strtoul(buf, NULL, 10);
491
492 switch (v) {
493 case 2: v = 1; break;
494 case 4: v = 2; break;
495 case 8: v = 3; break;
496 default:
497 dev_err(&client->dev, "fan_div value %ld not "
498 "supported. Choose one of 2, 4 or 8!\n", v);
499 return -EINVAL;
500 }
501
502 mutex_lock(&data->update_lock);
503
504 /* bits 2..7 reserved => mask with 0x03 */
505 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03;
506 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v;
507
508 fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]);
509 mutex_unlock(&data->update_lock);
510 return count;
511}
512
513static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr)
514{
515 /* bits 2..7 reserved => mask with 0x03 */
516 return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03));
517}
518
519#define RPM_FROM_REG(val) (val*60)
520
521static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr)
522{
523 return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)]));
524}
525
526
527
528#define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1)
529
530static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data,
531 const char *buf, size_t count, int nr, int reg)
532{
533 /* bits 2..7 reserved, 0 read only => mask with 0x02 */
534 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
535
536 mutex_lock(&data->update_lock);
537 data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v;
538 fscher_write_value(client, reg, v);
539 mutex_unlock(&data->update_lock);
540 return count;
541}
542
543static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr)
544{
545 /* bits 2..7 reserved => mask with 0x03 */
546 return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03);
547}
548
549#define TEMP_FROM_REG(val) (((val) - 128) * 1000)
550
551static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr)
552{
553 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)]));
554}
555
556/*
557 * The final conversion is specified in sensors.conf, as it depends on
558 * mainboard specific values. We export the registers contents as
559 * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much
560 * sense per se, but it minimizes the conversions count and keeps the
561 * values within a usual range.
562 */
563#define VOLT_FROM_REG(val) ((val) * 10)
564
565static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr)
566{
567 return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr]));
568}
569
570
571
572static ssize_t show_revision(struct fscher_data *data, char *buf, int nr)
573{
574 return sprintf(buf, "%u\n", data->revision);
575}
576
577
578
579static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr)
580{
581 /* bits 2, 5..6 reserved => mask with 0x9b */
582 return sprintf(buf, "%u\n", data->global_event & 0x9b);
583}
584
585
586
587static ssize_t set_control(struct i2c_client *client, struct fscher_data *data,
588 const char *buf, size_t count, int nr, int reg)
589{
590 /* bits 1..7 reserved => mask with 0x01 */
591 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01;
592
593 mutex_lock(&data->update_lock);
594 data->global_control = v;
595 fscher_write_value(client, reg, v);
596 mutex_unlock(&data->update_lock);
597 return count;
598}
599
600static ssize_t show_control(struct fscher_data *data, char *buf, int nr)
601{
602 /* bits 1..7 reserved => mask with 0x01 */
603 return sprintf(buf, "%u\n", data->global_control & 0x01);
604}
605
606
607
608static ssize_t set_watchdog_control(struct i2c_client *client, struct
609 fscher_data *data, const char *buf, size_t count,
610 int nr, int reg)
611{
612 /* bits 0..3 reserved => mask with 0xf0 */
613 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0;
614
615 mutex_lock(&data->update_lock);
616 data->watchdog[2] &= ~0xf0;
617 data->watchdog[2] |= v;
618 fscher_write_value(client, reg, data->watchdog[2]);
619 mutex_unlock(&data->update_lock);
620 return count;
621}
622
623static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr)
624{
625 /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */
626 return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0);
627}
628
629static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data,
630 const char *buf, size_t count, int nr, int reg)
631{
632 /* bits 0, 2..7 reserved => mask with 0x02 */
633 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
634
635 mutex_lock(&data->update_lock);
636 data->watchdog[1] &= ~v;
637 fscher_write_value(client, reg, v);
638 mutex_unlock(&data->update_lock);
639 return count;
640}
641
642static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr)
643{
644 /* bits 0, 2..7 reserved => mask with 0x02 */
645 return sprintf(buf, "%u\n", data->watchdog[1] & 0x02);
646}
647
648static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data,
649 const char *buf, size_t count, int nr, int reg)
650{
651 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff;
652
653 mutex_lock(&data->update_lock);
654 data->watchdog[0] = v;
655 fscher_write_value(client, reg, data->watchdog[0]);
656 mutex_unlock(&data->update_lock);
657 return count;
658}
659
660static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr)
661{
662 return sprintf(buf, "%u\n", data->watchdog[0]);
663}
664
665static int __init sensors_fscher_init(void)
666{
667 return i2c_add_driver(&fscher_driver);
668}
669
670static void __exit sensors_fscher_exit(void)
671{
672 i2c_del_driver(&fscher_driver);
673}
674
675MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>");
676MODULE_DESCRIPTION("FSC Hermes driver");
677MODULE_LICENSE("GPL");
678
679module_init(sensors_fscher_init);
680module_exit(sensors_fscher_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-04 09:31:25 -0500