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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 = { | |
121 | .owner = THIS_MODULE, | |
122 | .name = "fscher", | |
123 | .id = I2C_DRIVERID_FSCHER, | |
1da177e4 LT |
124 | .attach_adapter = fscher_attach_adapter, |
125 | .detach_client = fscher_detach_client, | |
126 | }; | |
127 | ||
128 | /* | |
129 | * Client data (each client gets its own) | |
130 | */ | |
131 | ||
132 | struct fscher_data { | |
133 | struct i2c_client client; | |
943b0830 | 134 | struct class_device *class_dev; |
1da177e4 LT |
135 | struct semaphore update_lock; |
136 | char valid; /* zero until following fields are valid */ | |
137 | unsigned long last_updated; /* in jiffies */ | |
138 | ||
139 | /* register values */ | |
140 | u8 revision; /* revision of chip */ | |
141 | u8 global_event; /* global event status */ | |
142 | u8 global_control; /* global control register */ | |
143 | u8 watchdog[3]; /* watchdog */ | |
144 | u8 volt[3]; /* 12, 5, battery voltage */ | |
145 | u8 temp_act[3]; /* temperature */ | |
146 | u8 temp_status[3]; /* status of sensor */ | |
147 | u8 fan_act[3]; /* fans revolutions per second */ | |
148 | u8 fan_status[3]; /* fan status */ | |
149 | u8 fan_min[3]; /* fan min value for rps */ | |
150 | u8 fan_ripple[3]; /* divider for rps */ | |
151 | }; | |
152 | ||
153 | /* | |
154 | * Sysfs stuff | |
155 | */ | |
156 | ||
157 | #define sysfs_r(kind, sub, offset, reg) \ | |
158 | static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \ | |
30f74292 YI |
159 | static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \ |
160 | static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
161 | { \ |
162 | struct fscher_data *data = fscher_update_device(dev); \ | |
163 | return show_##kind##sub(data, buf, (offset)); \ | |
164 | } | |
165 | ||
166 | #define sysfs_w(kind, sub, offset, reg) \ | |
167 | static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \ | |
30f74292 YI |
168 | static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \ |
169 | static ssize_t set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \ | |
1da177e4 LT |
170 | { \ |
171 | struct i2c_client *client = to_i2c_client(dev); \ | |
172 | struct fscher_data *data = i2c_get_clientdata(client); \ | |
173 | return set_##kind##sub(client, data, buf, count, (offset), reg); \ | |
174 | } | |
175 | ||
176 | #define sysfs_rw_n(kind, sub, offset, reg) \ | |
177 | sysfs_r(kind, sub, offset, reg) \ | |
178 | sysfs_w(kind, sub, offset, reg) \ | |
179 | static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub); | |
180 | ||
181 | #define sysfs_rw(kind, sub, reg) \ | |
182 | sysfs_r(kind, sub, 0, reg) \ | |
183 | sysfs_w(kind, sub, 0, reg) \ | |
184 | static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub); | |
185 | ||
186 | #define sysfs_ro_n(kind, sub, offset, reg) \ | |
187 | sysfs_r(kind, sub, offset, reg) \ | |
188 | static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL); | |
189 | ||
190 | #define sysfs_ro(kind, sub, reg) \ | |
191 | sysfs_r(kind, sub, 0, reg) \ | |
192 | static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL); | |
193 | ||
194 | #define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \ | |
195 | sysfs_rw_n(pwm, , offset, reg_min) \ | |
196 | sysfs_rw_n(fan, _status, offset, reg_status) \ | |
197 | sysfs_rw_n(fan, _div , offset, reg_ripple) \ | |
198 | sysfs_ro_n(fan, _input , offset, reg_act) | |
199 | ||
200 | #define sysfs_temp(offset, reg_status, reg_act) \ | |
201 | sysfs_rw_n(temp, _status, offset, reg_status) \ | |
202 | sysfs_ro_n(temp, _input , offset, reg_act) | |
203 | ||
204 | #define sysfs_in(offset, reg_act) \ | |
205 | sysfs_ro_n(in, _input, offset, reg_act) | |
206 | ||
207 | #define sysfs_revision(reg_revision) \ | |
208 | sysfs_ro(revision, , reg_revision) | |
209 | ||
210 | #define sysfs_alarms(reg_events) \ | |
211 | sysfs_ro(alarms, , reg_events) | |
212 | ||
213 | #define sysfs_control(reg_control) \ | |
214 | sysfs_rw(control, , reg_control) | |
215 | ||
216 | #define sysfs_watchdog(reg_control, reg_status, reg_preset) \ | |
217 | sysfs_rw(watchdog, _control, reg_control) \ | |
218 | sysfs_rw(watchdog, _status , reg_status) \ | |
219 | sysfs_rw(watchdog, _preset , reg_preset) | |
220 | ||
221 | sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN, | |
222 | FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT) | |
223 | sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN, | |
224 | FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT) | |
225 | sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN, | |
226 | FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT) | |
227 | ||
228 | sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT) | |
229 | sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT) | |
230 | sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT) | |
231 | ||
232 | sysfs_in(0, FSCHER_REG_VOLT_12) | |
233 | sysfs_in(1, FSCHER_REG_VOLT_5) | |
234 | sysfs_in(2, FSCHER_REG_VOLT_BATT) | |
235 | ||
236 | sysfs_revision(FSCHER_REG_REVISION) | |
237 | sysfs_alarms(FSCHER_REG_EVENTS) | |
238 | sysfs_control(FSCHER_REG_CONTROL) | |
239 | sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET) | |
240 | ||
241 | #define device_create_file_fan(client, offset) \ | |
242 | do { \ | |
243 | device_create_file(&client->dev, &dev_attr_fan##offset##_status); \ | |
244 | device_create_file(&client->dev, &dev_attr_pwm##offset); \ | |
245 | device_create_file(&client->dev, &dev_attr_fan##offset##_div); \ | |
246 | device_create_file(&client->dev, &dev_attr_fan##offset##_input); \ | |
247 | } while (0) | |
248 | ||
249 | #define device_create_file_temp(client, offset) \ | |
250 | do { \ | |
251 | device_create_file(&client->dev, &dev_attr_temp##offset##_status); \ | |
252 | device_create_file(&client->dev, &dev_attr_temp##offset##_input); \ | |
253 | } while (0) | |
254 | ||
255 | #define device_create_file_in(client, offset) \ | |
256 | do { \ | |
257 | device_create_file(&client->dev, &dev_attr_in##offset##_input); \ | |
258 | } while (0) | |
259 | ||
260 | #define device_create_file_revision(client) \ | |
261 | do { \ | |
262 | device_create_file(&client->dev, &dev_attr_revision); \ | |
263 | } while (0) | |
264 | ||
265 | #define device_create_file_alarms(client) \ | |
266 | do { \ | |
267 | device_create_file(&client->dev, &dev_attr_alarms); \ | |
268 | } while (0) | |
269 | ||
270 | #define device_create_file_control(client) \ | |
271 | do { \ | |
272 | device_create_file(&client->dev, &dev_attr_control); \ | |
273 | } while (0) | |
274 | ||
275 | #define device_create_file_watchdog(client) \ | |
276 | do { \ | |
277 | device_create_file(&client->dev, &dev_attr_watchdog_status); \ | |
278 | device_create_file(&client->dev, &dev_attr_watchdog_control); \ | |
279 | device_create_file(&client->dev, &dev_attr_watchdog_preset); \ | |
280 | } while (0) | |
281 | ||
282 | /* | |
283 | * Real code | |
284 | */ | |
285 | ||
286 | static int fscher_attach_adapter(struct i2c_adapter *adapter) | |
287 | { | |
288 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
289 | return 0; | |
2ed2dc3c | 290 | return i2c_probe(adapter, &addr_data, fscher_detect); |
1da177e4 LT |
291 | } |
292 | ||
293 | static int fscher_detect(struct i2c_adapter *adapter, int address, int kind) | |
294 | { | |
295 | struct i2c_client *new_client; | |
296 | struct fscher_data *data; | |
297 | int err = 0; | |
298 | ||
299 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
300 | goto exit; | |
301 | ||
302 | /* OK. For now, we presume we have a valid client. We now create the | |
303 | * client structure, even though we cannot fill it completely yet. | |
304 | * But it allows us to access i2c_smbus_read_byte_data. */ | |
ba9c2e8d | 305 | if (!(data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL))) { |
1da177e4 LT |
306 | err = -ENOMEM; |
307 | goto exit; | |
308 | } | |
1da177e4 LT |
309 | |
310 | /* The common I2C client data is placed right before the | |
311 | * Hermes-specific data. */ | |
312 | new_client = &data->client; | |
313 | i2c_set_clientdata(new_client, data); | |
314 | new_client->addr = address; | |
315 | new_client->adapter = adapter; | |
316 | new_client->driver = &fscher_driver; | |
317 | new_client->flags = 0; | |
318 | ||
319 | /* Do the remaining detection unless force or force_fscher parameter */ | |
320 | if (kind < 0) { | |
321 | if ((i2c_smbus_read_byte_data(new_client, | |
322 | FSCHER_REG_IDENT_0) != 0x48) /* 'H' */ | |
323 | || (i2c_smbus_read_byte_data(new_client, | |
324 | FSCHER_REG_IDENT_1) != 0x45) /* 'E' */ | |
325 | || (i2c_smbus_read_byte_data(new_client, | |
326 | FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */ | |
327 | goto exit_free; | |
328 | } | |
329 | ||
330 | /* Fill in the remaining client fields and put it into the | |
331 | * global list */ | |
332 | strlcpy(new_client->name, "fscher", I2C_NAME_SIZE); | |
333 | data->valid = 0; | |
334 | init_MUTEX(&data->update_lock); | |
335 | ||
336 | /* Tell the I2C layer a new client has arrived */ | |
337 | if ((err = i2c_attach_client(new_client))) | |
338 | goto exit_free; | |
339 | ||
340 | fscher_init_client(new_client); | |
341 | ||
342 | /* Register sysfs hooks */ | |
943b0830 MH |
343 | data->class_dev = hwmon_device_register(&new_client->dev); |
344 | if (IS_ERR(data->class_dev)) { | |
345 | err = PTR_ERR(data->class_dev); | |
346 | goto exit_detach; | |
347 | } | |
348 | ||
1da177e4 LT |
349 | device_create_file_revision(new_client); |
350 | device_create_file_alarms(new_client); | |
351 | device_create_file_control(new_client); | |
352 | device_create_file_watchdog(new_client); | |
353 | ||
354 | device_create_file_in(new_client, 0); | |
355 | device_create_file_in(new_client, 1); | |
356 | device_create_file_in(new_client, 2); | |
357 | ||
358 | device_create_file_fan(new_client, 1); | |
359 | device_create_file_fan(new_client, 2); | |
360 | device_create_file_fan(new_client, 3); | |
361 | ||
362 | device_create_file_temp(new_client, 1); | |
363 | device_create_file_temp(new_client, 2); | |
364 | device_create_file_temp(new_client, 3); | |
365 | ||
366 | return 0; | |
367 | ||
943b0830 MH |
368 | exit_detach: |
369 | i2c_detach_client(new_client); | |
1da177e4 LT |
370 | exit_free: |
371 | kfree(data); | |
372 | exit: | |
373 | return err; | |
374 | } | |
375 | ||
376 | static int fscher_detach_client(struct i2c_client *client) | |
377 | { | |
943b0830 | 378 | struct fscher_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
379 | int err; |
380 | ||
943b0830 MH |
381 | hwmon_device_unregister(data->class_dev); |
382 | ||
7bef5594 | 383 | if ((err = i2c_detach_client(client))) |
1da177e4 | 384 | return err; |
1da177e4 | 385 | |
943b0830 | 386 | kfree(data); |
1da177e4 LT |
387 | return 0; |
388 | } | |
389 | ||
390 | static int fscher_read_value(struct i2c_client *client, u8 reg) | |
391 | { | |
392 | dev_dbg(&client->dev, "read reg 0x%02x\n", reg); | |
393 | ||
394 | return i2c_smbus_read_byte_data(client, reg); | |
395 | } | |
396 | ||
397 | static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value) | |
398 | { | |
399 | dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n", | |
400 | reg, value); | |
401 | ||
402 | return i2c_smbus_write_byte_data(client, reg, value); | |
403 | } | |
404 | ||
405 | /* Called when we have found a new FSC Hermes. */ | |
406 | static void fscher_init_client(struct i2c_client *client) | |
407 | { | |
408 | struct fscher_data *data = i2c_get_clientdata(client); | |
409 | ||
410 | /* Read revision from chip */ | |
411 | data->revision = fscher_read_value(client, FSCHER_REG_REVISION); | |
412 | } | |
413 | ||
414 | static struct fscher_data *fscher_update_device(struct device *dev) | |
415 | { | |
416 | struct i2c_client *client = to_i2c_client(dev); | |
417 | struct fscher_data *data = i2c_get_clientdata(client); | |
418 | ||
419 | down(&data->update_lock); | |
420 | ||
421 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { | |
422 | ||
423 | dev_dbg(&client->dev, "Starting fscher update\n"); | |
424 | ||
425 | data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT); | |
426 | data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT); | |
427 | data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT); | |
428 | data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE); | |
429 | data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE); | |
430 | data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE); | |
431 | ||
432 | data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12); | |
433 | data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5); | |
434 | data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT); | |
435 | ||
436 | data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT); | |
437 | data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT); | |
438 | data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT); | |
439 | data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE); | |
440 | data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE); | |
441 | data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE); | |
442 | data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN); | |
443 | data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN); | |
444 | data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN); | |
445 | data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE); | |
446 | data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE); | |
447 | data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE); | |
448 | ||
449 | data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET); | |
450 | data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE); | |
451 | data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL); | |
452 | ||
453 | data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE); | |
454 | ||
455 | data->last_updated = jiffies; | |
456 | data->valid = 1; | |
457 | } | |
458 | ||
459 | up(&data->update_lock); | |
460 | ||
461 | return data; | |
462 | } | |
463 | ||
464 | ||
465 | ||
466 | #define FAN_INDEX_FROM_NUM(nr) ((nr) - 1) | |
467 | ||
468 | static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data, | |
469 | const char *buf, size_t count, int nr, int reg) | |
470 | { | |
471 | /* bits 0..1, 3..7 reserved => mask with 0x04 */ | |
472 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04; | |
473 | ||
474 | down(&data->update_lock); | |
475 | data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v; | |
476 | fscher_write_value(client, reg, v); | |
477 | up(&data->update_lock); | |
478 | return count; | |
479 | } | |
480 | ||
481 | static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr) | |
482 | { | |
483 | /* bits 0..1, 3..7 reserved => mask with 0x04 */ | |
484 | return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04); | |
485 | } | |
486 | ||
487 | static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data, | |
488 | const char *buf, size_t count, int nr, int reg) | |
489 | { | |
490 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
491 | ||
492 | down(&data->update_lock); | |
493 | data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v; | |
494 | fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]); | |
495 | up(&data->update_lock); | |
496 | return count; | |
497 | } | |
498 | ||
499 | static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr) | |
500 | { | |
501 | return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]); | |
502 | } | |
503 | ||
504 | static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data, | |
505 | const char *buf, size_t count, int nr, int reg) | |
506 | { | |
507 | /* supported values: 2, 4, 8 */ | |
508 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
509 | ||
510 | switch (v) { | |
511 | case 2: v = 1; break; | |
512 | case 4: v = 2; break; | |
513 | case 8: v = 3; break; | |
514 | default: | |
515 | dev_err(&client->dev, "fan_div value %ld not " | |
516 | "supported. Choose one of 2, 4 or 8!\n", v); | |
517 | return -EINVAL; | |
518 | } | |
519 | ||
520 | down(&data->update_lock); | |
521 | ||
522 | /* bits 2..7 reserved => mask with 0x03 */ | |
523 | data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03; | |
524 | data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v; | |
525 | ||
526 | fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]); | |
527 | up(&data->update_lock); | |
528 | return count; | |
529 | } | |
530 | ||
531 | static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr) | |
532 | { | |
533 | /* bits 2..7 reserved => mask with 0x03 */ | |
534 | return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03)); | |
535 | } | |
536 | ||
537 | #define RPM_FROM_REG(val) (val*60) | |
538 | ||
539 | static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr) | |
540 | { | |
541 | return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)])); | |
542 | } | |
543 | ||
544 | ||
545 | ||
546 | #define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1) | |
547 | ||
548 | static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data, | |
549 | const char *buf, size_t count, int nr, int reg) | |
550 | { | |
551 | /* bits 2..7 reserved, 0 read only => mask with 0x02 */ | |
552 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; | |
553 | ||
554 | down(&data->update_lock); | |
555 | data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v; | |
556 | fscher_write_value(client, reg, v); | |
557 | up(&data->update_lock); | |
558 | return count; | |
559 | } | |
560 | ||
561 | static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr) | |
562 | { | |
563 | /* bits 2..7 reserved => mask with 0x03 */ | |
564 | return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03); | |
565 | } | |
566 | ||
567 | #define TEMP_FROM_REG(val) (((val) - 128) * 1000) | |
568 | ||
569 | static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr) | |
570 | { | |
571 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)])); | |
572 | } | |
573 | ||
574 | /* | |
575 | * The final conversion is specified in sensors.conf, as it depends on | |
576 | * mainboard specific values. We export the registers contents as | |
577 | * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much | |
578 | * sense per se, but it minimizes the conversions count and keeps the | |
579 | * values within a usual range. | |
580 | */ | |
581 | #define VOLT_FROM_REG(val) ((val) * 10) | |
582 | ||
583 | static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr) | |
584 | { | |
585 | return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr])); | |
586 | } | |
587 | ||
588 | ||
589 | ||
590 | static ssize_t show_revision(struct fscher_data *data, char *buf, int nr) | |
591 | { | |
592 | return sprintf(buf, "%u\n", data->revision); | |
593 | } | |
594 | ||
595 | ||
596 | ||
597 | static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr) | |
598 | { | |
599 | /* bits 2, 5..6 reserved => mask with 0x9b */ | |
600 | return sprintf(buf, "%u\n", data->global_event & 0x9b); | |
601 | } | |
602 | ||
603 | ||
604 | ||
605 | static ssize_t set_control(struct i2c_client *client, struct fscher_data *data, | |
606 | const char *buf, size_t count, int nr, int reg) | |
607 | { | |
608 | /* bits 1..7 reserved => mask with 0x01 */ | |
609 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01; | |
610 | ||
611 | down(&data->update_lock); | |
612 | data->global_control &= ~v; | |
613 | fscher_write_value(client, reg, v); | |
614 | up(&data->update_lock); | |
615 | return count; | |
616 | } | |
617 | ||
618 | static ssize_t show_control(struct fscher_data *data, char *buf, int nr) | |
619 | { | |
620 | /* bits 1..7 reserved => mask with 0x01 */ | |
621 | return sprintf(buf, "%u\n", data->global_control & 0x01); | |
622 | } | |
623 | ||
624 | ||
625 | ||
626 | static ssize_t set_watchdog_control(struct i2c_client *client, struct | |
627 | fscher_data *data, const char *buf, size_t count, | |
628 | int nr, int reg) | |
629 | { | |
630 | /* bits 0..3 reserved => mask with 0xf0 */ | |
631 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0; | |
632 | ||
633 | down(&data->update_lock); | |
634 | data->watchdog[2] &= ~0xf0; | |
635 | data->watchdog[2] |= v; | |
636 | fscher_write_value(client, reg, data->watchdog[2]); | |
637 | up(&data->update_lock); | |
638 | return count; | |
639 | } | |
640 | ||
641 | static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr) | |
642 | { | |
643 | /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */ | |
644 | return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0); | |
645 | } | |
646 | ||
647 | static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data, | |
648 | const char *buf, size_t count, int nr, int reg) | |
649 | { | |
650 | /* bits 0, 2..7 reserved => mask with 0x02 */ | |
651 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; | |
652 | ||
653 | down(&data->update_lock); | |
654 | data->watchdog[1] &= ~v; | |
655 | fscher_write_value(client, reg, v); | |
656 | up(&data->update_lock); | |
657 | return count; | |
658 | } | |
659 | ||
660 | static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr) | |
661 | { | |
662 | /* bits 0, 2..7 reserved => mask with 0x02 */ | |
663 | return sprintf(buf, "%u\n", data->watchdog[1] & 0x02); | |
664 | } | |
665 | ||
666 | static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data, | |
667 | const char *buf, size_t count, int nr, int reg) | |
668 | { | |
669 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff; | |
670 | ||
671 | down(&data->update_lock); | |
672 | data->watchdog[0] = v; | |
673 | fscher_write_value(client, reg, data->watchdog[0]); | |
674 | up(&data->update_lock); | |
675 | return count; | |
676 | } | |
677 | ||
678 | static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr) | |
679 | { | |
680 | return sprintf(buf, "%u\n", data->watchdog[0]); | |
681 | } | |
682 | ||
683 | static int __init sensors_fscher_init(void) | |
684 | { | |
685 | return i2c_add_driver(&fscher_driver); | |
686 | } | |
687 | ||
688 | static void __exit sensors_fscher_exit(void) | |
689 | { | |
690 | i2c_del_driver(&fscher_driver); | |
691 | } | |
692 | ||
693 | MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>"); | |
694 | MODULE_DESCRIPTION("FSC Hermes driver"); | |
695 | MODULE_LICENSE("GPL"); | |
696 | ||
697 | module_init(sensors_fscher_init); | |
698 | module_exit(sensors_fscher_exit); |