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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 | ||
1da177e4 LT |
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> | |
943b0830 MH |
34 | #include <linux/hwmon.h> |
35 | #include <linux/err.h> | |
1da177e4 LT |
36 | |
37 | /* | |
38 | * Addresses to scan | |
39 | */ | |
40 | ||
41 | static unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; | |
1da177e4 LT |
42 | |
43 | /* | |
44 | * Insmod parameters | |
45 | */ | |
46 | ||
f4b50261 | 47 | I2C_CLIENT_INSMOD_1(fscher); |
1da177e4 LT |
48 | |
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 | ||
107 | static int fscher_attach_adapter(struct i2c_adapter *adapter); | |
108 | static int fscher_detect(struct i2c_adapter *adapter, int address, int kind); | |
109 | static int fscher_detach_client(struct i2c_client *client); | |
110 | static struct fscher_data *fscher_update_device(struct device *dev); | |
111 | static void fscher_init_client(struct i2c_client *client); | |
112 | ||
113 | static int fscher_read_value(struct i2c_client *client, u8 reg); | |
114 | static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value); | |
115 | ||
116 | /* | |
117 | * Driver data (common to all clients) | |
118 | */ | |
119 | ||
120 | static struct i2c_driver fscher_driver = { | |
cdaf7934 | 121 | .driver = { |
cdaf7934 LR |
122 | .name = "fscher", |
123 | }, | |
1da177e4 | 124 | .id = I2C_DRIVERID_FSCHER, |
1da177e4 LT |
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 | ||
133 | struct fscher_data { | |
134 | struct i2c_client client; | |
943b0830 | 135 | struct class_device *class_dev; |
1da177e4 LT |
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) \ | |
159 | static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \ | |
30f74292 YI |
160 | static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \ |
161 | static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
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) \ | |
168 | static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \ | |
30f74292 YI |
169 | static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \ |
170 | static ssize_t set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \ | |
1da177e4 LT |
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) \ | |
178 | sysfs_r(kind, sub, offset, reg) \ | |
179 | sysfs_w(kind, sub, offset, reg) \ | |
180 | static 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) \ | |
183 | sysfs_r(kind, sub, 0, reg) \ | |
184 | sysfs_w(kind, sub, 0, reg) \ | |
185 | static 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) \ | |
188 | sysfs_r(kind, sub, offset, reg) \ | |
189 | static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL); | |
190 | ||
191 | #define sysfs_ro(kind, sub, reg) \ | |
192 | sysfs_r(kind, sub, 0, reg) \ | |
193 | static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL); | |
194 | ||
195 | #define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \ | |
196 | sysfs_rw_n(pwm, , offset, reg_min) \ | |
197 | sysfs_rw_n(fan, _status, offset, reg_status) \ | |
198 | sysfs_rw_n(fan, _div , offset, reg_ripple) \ | |
199 | sysfs_ro_n(fan, _input , offset, reg_act) | |
200 | ||
201 | #define sysfs_temp(offset, reg_status, reg_act) \ | |
202 | sysfs_rw_n(temp, _status, offset, reg_status) \ | |
203 | sysfs_ro_n(temp, _input , offset, reg_act) | |
204 | ||
205 | #define sysfs_in(offset, reg_act) \ | |
206 | sysfs_ro_n(in, _input, offset, reg_act) | |
207 | ||
208 | #define sysfs_revision(reg_revision) \ | |
209 | sysfs_ro(revision, , reg_revision) | |
210 | ||
211 | #define sysfs_alarms(reg_events) \ | |
212 | sysfs_ro(alarms, , reg_events) | |
213 | ||
214 | #define sysfs_control(reg_control) \ | |
215 | sysfs_rw(control, , reg_control) | |
216 | ||
217 | #define sysfs_watchdog(reg_control, reg_status, reg_preset) \ | |
218 | sysfs_rw(watchdog, _control, reg_control) \ | |
219 | sysfs_rw(watchdog, _status , reg_status) \ | |
220 | sysfs_rw(watchdog, _preset , reg_preset) | |
221 | ||
222 | sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN, | |
223 | FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT) | |
224 | sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN, | |
225 | FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT) | |
226 | sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN, | |
227 | FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT) | |
228 | ||
229 | sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT) | |
230 | sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT) | |
231 | sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT) | |
232 | ||
233 | sysfs_in(0, FSCHER_REG_VOLT_12) | |
234 | sysfs_in(1, FSCHER_REG_VOLT_5) | |
235 | sysfs_in(2, FSCHER_REG_VOLT_BATT) | |
236 | ||
237 | sysfs_revision(FSCHER_REG_REVISION) | |
238 | sysfs_alarms(FSCHER_REG_EVENTS) | |
239 | sysfs_control(FSCHER_REG_CONTROL) | |
240 | sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET) | |
241 | ||
242 | #define device_create_file_fan(client, offset) \ | |
243 | do { \ | |
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) \ | |
251 | do { \ | |
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) \ | |
257 | do { \ | |
258 | device_create_file(&client->dev, &dev_attr_in##offset##_input); \ | |
259 | } while (0) | |
260 | ||
261 | #define device_create_file_revision(client) \ | |
262 | do { \ | |
263 | device_create_file(&client->dev, &dev_attr_revision); \ | |
264 | } while (0) | |
265 | ||
266 | #define device_create_file_alarms(client) \ | |
267 | do { \ | |
268 | device_create_file(&client->dev, &dev_attr_alarms); \ | |
269 | } while (0) | |
270 | ||
271 | #define device_create_file_control(client) \ | |
272 | do { \ | |
273 | device_create_file(&client->dev, &dev_attr_control); \ | |
274 | } while (0) | |
275 | ||
276 | #define device_create_file_watchdog(client) \ | |
277 | do { \ | |
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 | ||
287 | static int fscher_attach_adapter(struct i2c_adapter *adapter) | |
288 | { | |
289 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
290 | return 0; | |
2ed2dc3c | 291 | return i2c_probe(adapter, &addr_data, fscher_detect); |
1da177e4 LT |
292 | } |
293 | ||
294 | static 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. */ | |
ba9c2e8d | 306 | if (!(data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL))) { |
1da177e4 LT |
307 | err = -ENOMEM; |
308 | goto exit; | |
309 | } | |
1da177e4 LT |
310 | |
311 | /* The common I2C client data is placed right before the | |
312 | * Hermes-specific data. */ | |
313 | new_client = &data->client; | |
314 | i2c_set_clientdata(new_client, data); | |
315 | new_client->addr = address; | |
316 | new_client->adapter = adapter; | |
317 | new_client->driver = &fscher_driver; | |
318 | new_client->flags = 0; | |
319 | ||
320 | /* Do the remaining detection unless force or force_fscher parameter */ | |
321 | if (kind < 0) { | |
322 | if ((i2c_smbus_read_byte_data(new_client, | |
323 | FSCHER_REG_IDENT_0) != 0x48) /* 'H' */ | |
324 | || (i2c_smbus_read_byte_data(new_client, | |
325 | FSCHER_REG_IDENT_1) != 0x45) /* 'E' */ | |
326 | || (i2c_smbus_read_byte_data(new_client, | |
327 | FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */ | |
328 | goto exit_free; | |
329 | } | |
330 | ||
331 | /* Fill in the remaining client fields and put it into the | |
332 | * global list */ | |
333 | strlcpy(new_client->name, "fscher", I2C_NAME_SIZE); | |
334 | data->valid = 0; | |
335 | init_MUTEX(&data->update_lock); | |
336 | ||
337 | /* Tell the I2C layer a new client has arrived */ | |
338 | if ((err = i2c_attach_client(new_client))) | |
339 | goto exit_free; | |
340 | ||
341 | fscher_init_client(new_client); | |
342 | ||
343 | /* Register sysfs hooks */ | |
943b0830 MH |
344 | data->class_dev = hwmon_device_register(&new_client->dev); |
345 | if (IS_ERR(data->class_dev)) { | |
346 | err = PTR_ERR(data->class_dev); | |
347 | goto exit_detach; | |
348 | } | |
349 | ||
1da177e4 LT |
350 | device_create_file_revision(new_client); |
351 | device_create_file_alarms(new_client); | |
352 | device_create_file_control(new_client); | |
353 | device_create_file_watchdog(new_client); | |
354 | ||
355 | device_create_file_in(new_client, 0); | |
356 | device_create_file_in(new_client, 1); | |
357 | device_create_file_in(new_client, 2); | |
358 | ||
359 | device_create_file_fan(new_client, 1); | |
360 | device_create_file_fan(new_client, 2); | |
361 | device_create_file_fan(new_client, 3); | |
362 | ||
363 | device_create_file_temp(new_client, 1); | |
364 | device_create_file_temp(new_client, 2); | |
365 | device_create_file_temp(new_client, 3); | |
366 | ||
367 | return 0; | |
368 | ||
943b0830 MH |
369 | exit_detach: |
370 | i2c_detach_client(new_client); | |
1da177e4 LT |
371 | exit_free: |
372 | kfree(data); | |
373 | exit: | |
374 | return err; | |
375 | } | |
376 | ||
377 | static int fscher_detach_client(struct i2c_client *client) | |
378 | { | |
943b0830 | 379 | struct fscher_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
380 | int err; |
381 | ||
943b0830 MH |
382 | hwmon_device_unregister(data->class_dev); |
383 | ||
7bef5594 | 384 | if ((err = i2c_detach_client(client))) |
1da177e4 | 385 | return err; |
1da177e4 | 386 | |
943b0830 | 387 | kfree(data); |
1da177e4 LT |
388 | return 0; |
389 | } | |
390 | ||
391 | static int fscher_read_value(struct i2c_client *client, u8 reg) | |
392 | { | |
393 | dev_dbg(&client->dev, "read reg 0x%02x\n", reg); | |
394 | ||
395 | return i2c_smbus_read_byte_data(client, reg); | |
396 | } | |
397 | ||
398 | static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value) | |
399 | { | |
400 | dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n", | |
401 | reg, value); | |
402 | ||
403 | return i2c_smbus_write_byte_data(client, reg, value); | |
404 | } | |
405 | ||
406 | /* Called when we have found a new FSC Hermes. */ | |
407 | static void fscher_init_client(struct i2c_client *client) | |
408 | { | |
409 | struct fscher_data *data = i2c_get_clientdata(client); | |
410 | ||
411 | /* Read revision from chip */ | |
412 | data->revision = fscher_read_value(client, FSCHER_REG_REVISION); | |
413 | } | |
414 | ||
415 | static struct fscher_data *fscher_update_device(struct device *dev) | |
416 | { | |
417 | struct i2c_client *client = to_i2c_client(dev); | |
418 | struct fscher_data *data = i2c_get_clientdata(client); | |
419 | ||
420 | down(&data->update_lock); | |
421 | ||
422 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { | |
423 | ||
424 | dev_dbg(&client->dev, "Starting fscher update\n"); | |
425 | ||
426 | data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT); | |
427 | data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT); | |
428 | data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT); | |
429 | data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE); | |
430 | data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE); | |
431 | data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE); | |
432 | ||
433 | data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12); | |
434 | data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5); | |
435 | data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT); | |
436 | ||
437 | data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT); | |
438 | data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT); | |
439 | data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT); | |
440 | data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE); | |
441 | data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE); | |
442 | data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE); | |
443 | data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN); | |
444 | data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN); | |
445 | data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN); | |
446 | data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE); | |
447 | data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE); | |
448 | data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE); | |
449 | ||
450 | data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET); | |
451 | data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE); | |
452 | data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL); | |
453 | ||
454 | data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE); | |
455 | ||
456 | data->last_updated = jiffies; | |
457 | data->valid = 1; | |
458 | } | |
459 | ||
460 | up(&data->update_lock); | |
461 | ||
462 | return data; | |
463 | } | |
464 | ||
465 | ||
466 | ||
467 | #define FAN_INDEX_FROM_NUM(nr) ((nr) - 1) | |
468 | ||
469 | static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data, | |
470 | const char *buf, size_t count, int nr, int reg) | |
471 | { | |
472 | /* bits 0..1, 3..7 reserved => mask with 0x04 */ | |
473 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04; | |
474 | ||
475 | down(&data->update_lock); | |
476 | data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v; | |
477 | fscher_write_value(client, reg, v); | |
478 | up(&data->update_lock); | |
479 | return count; | |
480 | } | |
481 | ||
482 | static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr) | |
483 | { | |
484 | /* bits 0..1, 3..7 reserved => mask with 0x04 */ | |
485 | return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04); | |
486 | } | |
487 | ||
488 | static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data, | |
489 | const char *buf, size_t count, int nr, int reg) | |
490 | { | |
491 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
492 | ||
493 | down(&data->update_lock); | |
494 | data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v; | |
495 | fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]); | |
496 | up(&data->update_lock); | |
497 | return count; | |
498 | } | |
499 | ||
500 | static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr) | |
501 | { | |
502 | return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]); | |
503 | } | |
504 | ||
505 | static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data, | |
506 | const char *buf, size_t count, int nr, int reg) | |
507 | { | |
508 | /* supported values: 2, 4, 8 */ | |
509 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
510 | ||
511 | switch (v) { | |
512 | case 2: v = 1; break; | |
513 | case 4: v = 2; break; | |
514 | case 8: v = 3; break; | |
515 | default: | |
516 | dev_err(&client->dev, "fan_div value %ld not " | |
517 | "supported. Choose one of 2, 4 or 8!\n", v); | |
518 | return -EINVAL; | |
519 | } | |
520 | ||
521 | down(&data->update_lock); | |
522 | ||
523 | /* bits 2..7 reserved => mask with 0x03 */ | |
524 | data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03; | |
525 | data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v; | |
526 | ||
527 | fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]); | |
528 | up(&data->update_lock); | |
529 | return count; | |
530 | } | |
531 | ||
532 | static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr) | |
533 | { | |
534 | /* bits 2..7 reserved => mask with 0x03 */ | |
535 | return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03)); | |
536 | } | |
537 | ||
538 | #define RPM_FROM_REG(val) (val*60) | |
539 | ||
540 | static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr) | |
541 | { | |
542 | return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)])); | |
543 | } | |
544 | ||
545 | ||
546 | ||
547 | #define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1) | |
548 | ||
549 | static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data, | |
550 | const char *buf, size_t count, int nr, int reg) | |
551 | { | |
552 | /* bits 2..7 reserved, 0 read only => mask with 0x02 */ | |
553 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; | |
554 | ||
555 | down(&data->update_lock); | |
556 | data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v; | |
557 | fscher_write_value(client, reg, v); | |
558 | up(&data->update_lock); | |
559 | return count; | |
560 | } | |
561 | ||
562 | static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr) | |
563 | { | |
564 | /* bits 2..7 reserved => mask with 0x03 */ | |
565 | return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03); | |
566 | } | |
567 | ||
568 | #define TEMP_FROM_REG(val) (((val) - 128) * 1000) | |
569 | ||
570 | static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr) | |
571 | { | |
572 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)])); | |
573 | } | |
574 | ||
575 | /* | |
576 | * The final conversion is specified in sensors.conf, as it depends on | |
577 | * mainboard specific values. We export the registers contents as | |
578 | * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much | |
579 | * sense per se, but it minimizes the conversions count and keeps the | |
580 | * values within a usual range. | |
581 | */ | |
582 | #define VOLT_FROM_REG(val) ((val) * 10) | |
583 | ||
584 | static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr) | |
585 | { | |
586 | return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr])); | |
587 | } | |
588 | ||
589 | ||
590 | ||
591 | static ssize_t show_revision(struct fscher_data *data, char *buf, int nr) | |
592 | { | |
593 | return sprintf(buf, "%u\n", data->revision); | |
594 | } | |
595 | ||
596 | ||
597 | ||
598 | static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr) | |
599 | { | |
600 | /* bits 2, 5..6 reserved => mask with 0x9b */ | |
601 | return sprintf(buf, "%u\n", data->global_event & 0x9b); | |
602 | } | |
603 | ||
604 | ||
605 | ||
606 | static ssize_t set_control(struct i2c_client *client, struct fscher_data *data, | |
607 | const char *buf, size_t count, int nr, int reg) | |
608 | { | |
609 | /* bits 1..7 reserved => mask with 0x01 */ | |
610 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01; | |
611 | ||
612 | down(&data->update_lock); | |
613 | data->global_control &= ~v; | |
614 | fscher_write_value(client, reg, v); | |
615 | up(&data->update_lock); | |
616 | return count; | |
617 | } | |
618 | ||
619 | static ssize_t show_control(struct fscher_data *data, char *buf, int nr) | |
620 | { | |
621 | /* bits 1..7 reserved => mask with 0x01 */ | |
622 | return sprintf(buf, "%u\n", data->global_control & 0x01); | |
623 | } | |
624 | ||
625 | ||
626 | ||
627 | static ssize_t set_watchdog_control(struct i2c_client *client, struct | |
628 | fscher_data *data, const char *buf, size_t count, | |
629 | int nr, int reg) | |
630 | { | |
631 | /* bits 0..3 reserved => mask with 0xf0 */ | |
632 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0; | |
633 | ||
634 | down(&data->update_lock); | |
635 | data->watchdog[2] &= ~0xf0; | |
636 | data->watchdog[2] |= v; | |
637 | fscher_write_value(client, reg, data->watchdog[2]); | |
638 | up(&data->update_lock); | |
639 | return count; | |
640 | } | |
641 | ||
642 | static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr) | |
643 | { | |
644 | /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */ | |
645 | return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0); | |
646 | } | |
647 | ||
648 | static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data, | |
649 | const char *buf, size_t count, int nr, int reg) | |
650 | { | |
651 | /* bits 0, 2..7 reserved => mask with 0x02 */ | |
652 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; | |
653 | ||
654 | down(&data->update_lock); | |
655 | data->watchdog[1] &= ~v; | |
656 | fscher_write_value(client, reg, v); | |
657 | up(&data->update_lock); | |
658 | return count; | |
659 | } | |
660 | ||
661 | static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr) | |
662 | { | |
663 | /* bits 0, 2..7 reserved => mask with 0x02 */ | |
664 | return sprintf(buf, "%u\n", data->watchdog[1] & 0x02); | |
665 | } | |
666 | ||
667 | static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data, | |
668 | const char *buf, size_t count, int nr, int reg) | |
669 | { | |
670 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff; | |
671 | ||
672 | down(&data->update_lock); | |
673 | data->watchdog[0] = v; | |
674 | fscher_write_value(client, reg, data->watchdog[0]); | |
675 | up(&data->update_lock); | |
676 | return count; | |
677 | } | |
678 | ||
679 | static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr) | |
680 | { | |
681 | return sprintf(buf, "%u\n", data->watchdog[0]); | |
682 | } | |
683 | ||
684 | static int __init sensors_fscher_init(void) | |
685 | { | |
686 | return i2c_add_driver(&fscher_driver); | |
687 | } | |
688 | ||
689 | static void __exit sensors_fscher_exit(void) | |
690 | { | |
691 | i2c_del_driver(&fscher_driver); | |
692 | } | |
693 | ||
694 | MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>"); | |
695 | MODULE_DESCRIPTION("FSC Hermes driver"); | |
696 | MODULE_LICENSE("GPL"); | |
697 | ||
698 | module_init(sensors_fscher_init); | |
699 | module_exit(sensors_fscher_exit); |