blob: 19717752cfcad64a6efd3d786a79d3b53b861578 [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>
Ingo Molnar9a61bf62006-01-18 23:19:26 +010036#include <linux/mutex.h>
Jean Delvare87808be2006-09-24 21:17:13 +020037#include <linux/sysfs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
39/*
40 * Addresses to scan
41 */
42
43static unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END };
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
45/*
46 * Insmod parameters
47 */
48
Jean Delvaref4b50262005-07-31 21:49:03 +020049I2C_CLIENT_INSMOD_1(fscher);
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
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_attach_adapter(struct i2c_adapter *adapter);
110static int fscher_detect(struct i2c_adapter *adapter, int address, int kind);
111static int fscher_detach_client(struct i2c_client *client);
112static struct fscher_data *fscher_update_device(struct device *dev);
113static void fscher_init_client(struct i2c_client *client);
114
115static int fscher_read_value(struct i2c_client *client, u8 reg);
116static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value);
117
118/*
119 * Driver data (common to all clients)
120 */
121
122static struct i2c_driver fscher_driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100123 .driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100124 .name = "fscher",
125 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 .id = I2C_DRIVERID_FSCHER,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 .attach_adapter = fscher_attach_adapter,
128 .detach_client = fscher_detach_client,
129};
130
131/*
132 * Client data (each client gets its own)
133 */
134
135struct fscher_data {
136 struct i2c_client client;
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400137 struct class_device *class_dev;
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100138 struct mutex update_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 char valid; /* zero until following fields are valid */
140 unsigned long last_updated; /* in jiffies */
141
142 /* register values */
143 u8 revision; /* revision of chip */
144 u8 global_event; /* global event status */
145 u8 global_control; /* global control register */
146 u8 watchdog[3]; /* watchdog */
147 u8 volt[3]; /* 12, 5, battery voltage */
148 u8 temp_act[3]; /* temperature */
149 u8 temp_status[3]; /* status of sensor */
150 u8 fan_act[3]; /* fans revolutions per second */
151 u8 fan_status[3]; /* fan status */
152 u8 fan_min[3]; /* fan min value for rps */
153 u8 fan_ripple[3]; /* divider for rps */
154};
155
156/*
157 * Sysfs stuff
158 */
159
160#define sysfs_r(kind, sub, offset, reg) \
161static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \
Yani Ioannou30f74292005-05-17 06:41:35 -0400162static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \
163static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164{ \
165 struct fscher_data *data = fscher_update_device(dev); \
166 return show_##kind##sub(data, buf, (offset)); \
167}
168
169#define sysfs_w(kind, sub, offset, reg) \
170static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \
Yani Ioannou30f74292005-05-17 06:41:35 -0400171static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \
172static 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 -0700173{ \
174 struct i2c_client *client = to_i2c_client(dev); \
175 struct fscher_data *data = i2c_get_clientdata(client); \
176 return set_##kind##sub(client, data, buf, count, (offset), reg); \
177}
178
179#define sysfs_rw_n(kind, sub, offset, reg) \
180sysfs_r(kind, sub, offset, reg) \
181sysfs_w(kind, sub, offset, reg) \
182static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub);
183
184#define sysfs_rw(kind, sub, reg) \
185sysfs_r(kind, sub, 0, reg) \
186sysfs_w(kind, sub, 0, reg) \
187static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub);
188
189#define sysfs_ro_n(kind, sub, offset, reg) \
190sysfs_r(kind, sub, offset, reg) \
191static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL);
192
193#define sysfs_ro(kind, sub, reg) \
194sysfs_r(kind, sub, 0, reg) \
195static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL);
196
197#define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \
198sysfs_rw_n(pwm, , offset, reg_min) \
199sysfs_rw_n(fan, _status, offset, reg_status) \
200sysfs_rw_n(fan, _div , offset, reg_ripple) \
201sysfs_ro_n(fan, _input , offset, reg_act)
202
203#define sysfs_temp(offset, reg_status, reg_act) \
204sysfs_rw_n(temp, _status, offset, reg_status) \
205sysfs_ro_n(temp, _input , offset, reg_act)
206
207#define sysfs_in(offset, reg_act) \
208sysfs_ro_n(in, _input, offset, reg_act)
209
210#define sysfs_revision(reg_revision) \
211sysfs_ro(revision, , reg_revision)
212
213#define sysfs_alarms(reg_events) \
214sysfs_ro(alarms, , reg_events)
215
216#define sysfs_control(reg_control) \
217sysfs_rw(control, , reg_control)
218
219#define sysfs_watchdog(reg_control, reg_status, reg_preset) \
220sysfs_rw(watchdog, _control, reg_control) \
221sysfs_rw(watchdog, _status , reg_status) \
222sysfs_rw(watchdog, _preset , reg_preset)
223
224sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN,
225 FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT)
226sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN,
227 FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT)
228sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN,
229 FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT)
230
231sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT)
232sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT)
233sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT)
234
235sysfs_in(0, FSCHER_REG_VOLT_12)
236sysfs_in(1, FSCHER_REG_VOLT_5)
237sysfs_in(2, FSCHER_REG_VOLT_BATT)
238
239sysfs_revision(FSCHER_REG_REVISION)
240sysfs_alarms(FSCHER_REG_EVENTS)
241sysfs_control(FSCHER_REG_CONTROL)
242sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET)
243
Jean Delvare87808be2006-09-24 21:17:13 +0200244static struct attribute *fscher_attributes[] = {
245 &dev_attr_revision.attr,
246 &dev_attr_alarms.attr,
247 &dev_attr_control.attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248
Jean Delvare87808be2006-09-24 21:17:13 +0200249 &dev_attr_watchdog_status.attr,
250 &dev_attr_watchdog_control.attr,
251 &dev_attr_watchdog_preset.attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252
Jean Delvare87808be2006-09-24 21:17:13 +0200253 &dev_attr_in0_input.attr,
254 &dev_attr_in1_input.attr,
255 &dev_attr_in2_input.attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256
Jean Delvare87808be2006-09-24 21:17:13 +0200257 &dev_attr_fan1_status.attr,
258 &dev_attr_fan1_div.attr,
259 &dev_attr_fan1_input.attr,
260 &dev_attr_pwm1.attr,
261 &dev_attr_fan2_status.attr,
262 &dev_attr_fan2_div.attr,
263 &dev_attr_fan2_input.attr,
264 &dev_attr_pwm2.attr,
265 &dev_attr_fan3_status.attr,
266 &dev_attr_fan3_div.attr,
267 &dev_attr_fan3_input.attr,
268 &dev_attr_pwm3.attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269
Jean Delvare87808be2006-09-24 21:17:13 +0200270 &dev_attr_temp1_status.attr,
271 &dev_attr_temp1_input.attr,
272 &dev_attr_temp2_status.attr,
273 &dev_attr_temp2_input.attr,
274 &dev_attr_temp3_status.attr,
275 &dev_attr_temp3_input.attr,
276 NULL
277};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
Jean Delvare87808be2006-09-24 21:17:13 +0200279static const struct attribute_group fscher_group = {
280 .attrs = fscher_attributes,
281};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283/*
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;
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100335 mutex_init(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336
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 */
Jean Delvare87808be2006-09-24 21:17:13 +0200344 if ((err = sysfs_create_group(&new_client->dev.kobj, &fscher_group)))
345 goto exit_detach;
346
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400347 data->class_dev = hwmon_device_register(&new_client->dev);
348 if (IS_ERR(data->class_dev)) {
349 err = PTR_ERR(data->class_dev);
Jean Delvare87808be2006-09-24 21:17:13 +0200350 goto exit_remove_files;
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400351 }
352
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 return 0;
354
Jean Delvare87808be2006-09-24 21:17:13 +0200355exit_remove_files:
356 sysfs_remove_group(&new_client->dev.kobj, &fscher_group);
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400357exit_detach:
358 i2c_detach_client(new_client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359exit_free:
360 kfree(data);
361exit:
362 return err;
363}
364
365static int fscher_detach_client(struct i2c_client *client)
366{
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400367 struct fscher_data *data = i2c_get_clientdata(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 int err;
369
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400370 hwmon_device_unregister(data->class_dev);
Jean Delvare87808be2006-09-24 21:17:13 +0200371 sysfs_remove_group(&client->dev.kobj, &fscher_group);
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400372
Jean Delvare7bef5592005-07-27 22:14:49 +0200373 if ((err = i2c_detach_client(client)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375
Mark M. Hoffman943b0832005-07-15 21:39:18 -0400376 kfree(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 return 0;
378}
379
380static int fscher_read_value(struct i2c_client *client, u8 reg)
381{
382 dev_dbg(&client->dev, "read reg 0x%02x\n", reg);
383
384 return i2c_smbus_read_byte_data(client, reg);
385}
386
387static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value)
388{
389 dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n",
390 reg, value);
391
392 return i2c_smbus_write_byte_data(client, reg, value);
393}
394
395/* Called when we have found a new FSC Hermes. */
396static void fscher_init_client(struct i2c_client *client)
397{
398 struct fscher_data *data = i2c_get_clientdata(client);
399
400 /* Read revision from chip */
401 data->revision = fscher_read_value(client, FSCHER_REG_REVISION);
402}
403
404static struct fscher_data *fscher_update_device(struct device *dev)
405{
406 struct i2c_client *client = to_i2c_client(dev);
407 struct fscher_data *data = i2c_get_clientdata(client);
408
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100409 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410
411 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
412
413 dev_dbg(&client->dev, "Starting fscher update\n");
414
415 data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT);
416 data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT);
417 data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT);
418 data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE);
419 data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE);
420 data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE);
421
422 data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12);
423 data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5);
424 data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT);
425
426 data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT);
427 data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT);
428 data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT);
429 data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE);
430 data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE);
431 data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE);
432 data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN);
433 data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN);
434 data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN);
435 data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE);
436 data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE);
437 data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE);
438
439 data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET);
440 data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE);
441 data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL);
442
443 data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE);
444
445 data->last_updated = jiffies;
446 data->valid = 1;
447 }
448
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100449 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450
451 return data;
452}
453
454
455
456#define FAN_INDEX_FROM_NUM(nr) ((nr) - 1)
457
458static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data,
459 const char *buf, size_t count, int nr, int reg)
460{
461 /* bits 0..1, 3..7 reserved => mask with 0x04 */
462 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04;
463
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100464 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v;
466 fscher_write_value(client, reg, v);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100467 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 return count;
469}
470
471static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr)
472{
473 /* bits 0..1, 3..7 reserved => mask with 0x04 */
474 return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04);
475}
476
477static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data,
478 const char *buf, size_t count, int nr, int reg)
479{
480 unsigned long v = simple_strtoul(buf, NULL, 10);
481
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100482 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v;
484 fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100485 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 return count;
487}
488
489static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr)
490{
491 return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
492}
493
494static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data,
495 const char *buf, size_t count, int nr, int reg)
496{
497 /* supported values: 2, 4, 8 */
498 unsigned long v = simple_strtoul(buf, NULL, 10);
499
500 switch (v) {
501 case 2: v = 1; break;
502 case 4: v = 2; break;
503 case 8: v = 3; break;
504 default:
505 dev_err(&client->dev, "fan_div value %ld not "
506 "supported. Choose one of 2, 4 or 8!\n", v);
507 return -EINVAL;
508 }
509
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100510 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511
512 /* bits 2..7 reserved => mask with 0x03 */
513 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03;
514 data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v;
515
516 fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100517 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 return count;
519}
520
521static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr)
522{
523 /* bits 2..7 reserved => mask with 0x03 */
524 return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03));
525}
526
527#define RPM_FROM_REG(val) (val*60)
528
529static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr)
530{
531 return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)]));
532}
533
534
535
536#define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1)
537
538static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data,
539 const char *buf, size_t count, int nr, int reg)
540{
541 /* bits 2..7 reserved, 0 read only => mask with 0x02 */
542 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
543
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100544 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545 data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v;
546 fscher_write_value(client, reg, v);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100547 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548 return count;
549}
550
551static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr)
552{
553 /* bits 2..7 reserved => mask with 0x03 */
554 return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03);
555}
556
557#define TEMP_FROM_REG(val) (((val) - 128) * 1000)
558
559static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr)
560{
561 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)]));
562}
563
564/*
565 * The final conversion is specified in sensors.conf, as it depends on
566 * mainboard specific values. We export the registers contents as
567 * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much
568 * sense per se, but it minimizes the conversions count and keeps the
569 * values within a usual range.
570 */
571#define VOLT_FROM_REG(val) ((val) * 10)
572
573static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr)
574{
575 return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr]));
576}
577
578
579
580static ssize_t show_revision(struct fscher_data *data, char *buf, int nr)
581{
582 return sprintf(buf, "%u\n", data->revision);
583}
584
585
586
587static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr)
588{
589 /* bits 2, 5..6 reserved => mask with 0x9b */
590 return sprintf(buf, "%u\n", data->global_event & 0x9b);
591}
592
593
594
595static ssize_t set_control(struct i2c_client *client, struct fscher_data *data,
596 const char *buf, size_t count, int nr, int reg)
597{
598 /* bits 1..7 reserved => mask with 0x01 */
599 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01;
600
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100601 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 data->global_control &= ~v;
603 fscher_write_value(client, reg, v);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100604 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 return count;
606}
607
608static ssize_t show_control(struct fscher_data *data, char *buf, int nr)
609{
610 /* bits 1..7 reserved => mask with 0x01 */
611 return sprintf(buf, "%u\n", data->global_control & 0x01);
612}
613
614
615
616static ssize_t set_watchdog_control(struct i2c_client *client, struct
617 fscher_data *data, const char *buf, size_t count,
618 int nr, int reg)
619{
620 /* bits 0..3 reserved => mask with 0xf0 */
621 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0;
622
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100623 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 data->watchdog[2] &= ~0xf0;
625 data->watchdog[2] |= v;
626 fscher_write_value(client, reg, data->watchdog[2]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100627 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628 return count;
629}
630
631static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr)
632{
633 /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */
634 return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0);
635}
636
637static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data,
638 const char *buf, size_t count, int nr, int reg)
639{
640 /* bits 0, 2..7 reserved => mask with 0x02 */
641 unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
642
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100643 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644 data->watchdog[1] &= ~v;
645 fscher_write_value(client, reg, v);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100646 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700647 return count;
648}
649
650static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr)
651{
652 /* bits 0, 2..7 reserved => mask with 0x02 */
653 return sprintf(buf, "%u\n", data->watchdog[1] & 0x02);
654}
655
656static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data,
657 const char *buf, size_t count, int nr, int reg)
658{
659 unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff;
660
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100661 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 data->watchdog[0] = v;
663 fscher_write_value(client, reg, data->watchdog[0]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100664 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 return count;
666}
667
668static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr)
669{
670 return sprintf(buf, "%u\n", data->watchdog[0]);
671}
672
673static int __init sensors_fscher_init(void)
674{
675 return i2c_add_driver(&fscher_driver);
676}
677
678static void __exit sensors_fscher_exit(void)
679{
680 i2c_del_driver(&fscher_driver);
681}
682
683MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>");
684MODULE_DESCRIPTION("FSC Hermes driver");
685MODULE_LICENSE("GPL");
686
687module_init(sensors_fscher_init);
688module_exit(sensors_fscher_exit);