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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> | |
9a61bf63 | 36 | #include <linux/mutex.h> |
87808be4 | 37 | #include <linux/sysfs.h> |
1da177e4 LT |
38 | |
39 | /* | |
40 | * Addresses to scan | |
41 | */ | |
42 | ||
43 | static unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; | |
1da177e4 LT |
44 | |
45 | /* | |
46 | * Insmod parameters | |
47 | */ | |
48 | ||
f4b50261 | 49 | I2C_CLIENT_INSMOD_1(fscher); |
1da177e4 LT |
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 | ||
109 | static int fscher_attach_adapter(struct i2c_adapter *adapter); | |
110 | static int fscher_detect(struct i2c_adapter *adapter, int address, int kind); | |
111 | static int fscher_detach_client(struct i2c_client *client); | |
112 | static struct fscher_data *fscher_update_device(struct device *dev); | |
113 | static void fscher_init_client(struct i2c_client *client); | |
114 | ||
115 | static int fscher_read_value(struct i2c_client *client, u8 reg); | |
116 | static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value); | |
117 | ||
118 | /* | |
119 | * Driver data (common to all clients) | |
120 | */ | |
121 | ||
122 | static struct i2c_driver fscher_driver = { | |
cdaf7934 | 123 | .driver = { |
cdaf7934 LR |
124 | .name = "fscher", |
125 | }, | |
1da177e4 | 126 | .id = I2C_DRIVERID_FSCHER, |
1da177e4 LT |
127 | .attach_adapter = fscher_attach_adapter, |
128 | .detach_client = fscher_detach_client, | |
129 | }; | |
130 | ||
131 | /* | |
132 | * Client data (each client gets its own) | |
133 | */ | |
134 | ||
135 | struct fscher_data { | |
136 | struct i2c_client client; | |
943b0830 | 137 | struct class_device *class_dev; |
9a61bf63 | 138 | struct mutex update_lock; |
1da177e4 LT |
139 | 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) \ | |
161 | static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \ | |
30f74292 YI |
162 | static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \ |
163 | static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
164 | { \ |
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) \ | |
170 | static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \ | |
30f74292 YI |
171 | static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \ |
172 | static ssize_t set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \ | |
1da177e4 LT |
173 | { \ |
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) \ | |
180 | sysfs_r(kind, sub, offset, reg) \ | |
181 | sysfs_w(kind, sub, offset, reg) \ | |
182 | static 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) \ | |
185 | sysfs_r(kind, sub, 0, reg) \ | |
186 | sysfs_w(kind, sub, 0, reg) \ | |
187 | static 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) \ | |
190 | sysfs_r(kind, sub, offset, reg) \ | |
191 | static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL); | |
192 | ||
193 | #define sysfs_ro(kind, sub, reg) \ | |
194 | sysfs_r(kind, sub, 0, reg) \ | |
195 | static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL); | |
196 | ||
197 | #define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \ | |
198 | sysfs_rw_n(pwm, , offset, reg_min) \ | |
199 | sysfs_rw_n(fan, _status, offset, reg_status) \ | |
200 | sysfs_rw_n(fan, _div , offset, reg_ripple) \ | |
201 | sysfs_ro_n(fan, _input , offset, reg_act) | |
202 | ||
203 | #define sysfs_temp(offset, reg_status, reg_act) \ | |
204 | sysfs_rw_n(temp, _status, offset, reg_status) \ | |
205 | sysfs_ro_n(temp, _input , offset, reg_act) | |
206 | ||
207 | #define sysfs_in(offset, reg_act) \ | |
208 | sysfs_ro_n(in, _input, offset, reg_act) | |
209 | ||
210 | #define sysfs_revision(reg_revision) \ | |
211 | sysfs_ro(revision, , reg_revision) | |
212 | ||
213 | #define sysfs_alarms(reg_events) \ | |
214 | sysfs_ro(alarms, , reg_events) | |
215 | ||
216 | #define sysfs_control(reg_control) \ | |
217 | sysfs_rw(control, , reg_control) | |
218 | ||
219 | #define sysfs_watchdog(reg_control, reg_status, reg_preset) \ | |
220 | sysfs_rw(watchdog, _control, reg_control) \ | |
221 | sysfs_rw(watchdog, _status , reg_status) \ | |
222 | sysfs_rw(watchdog, _preset , reg_preset) | |
223 | ||
224 | sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN, | |
225 | FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT) | |
226 | sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN, | |
227 | FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT) | |
228 | sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN, | |
229 | FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT) | |
230 | ||
231 | sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT) | |
232 | sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT) | |
233 | sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT) | |
234 | ||
235 | sysfs_in(0, FSCHER_REG_VOLT_12) | |
236 | sysfs_in(1, FSCHER_REG_VOLT_5) | |
237 | sysfs_in(2, FSCHER_REG_VOLT_BATT) | |
238 | ||
239 | sysfs_revision(FSCHER_REG_REVISION) | |
240 | sysfs_alarms(FSCHER_REG_EVENTS) | |
241 | sysfs_control(FSCHER_REG_CONTROL) | |
242 | sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET) | |
243 | ||
87808be4 JD |
244 | static struct attribute *fscher_attributes[] = { |
245 | &dev_attr_revision.attr, | |
246 | &dev_attr_alarms.attr, | |
247 | &dev_attr_control.attr, | |
248 | ||
249 | &dev_attr_watchdog_status.attr, | |
250 | &dev_attr_watchdog_control.attr, | |
251 | &dev_attr_watchdog_preset.attr, | |
252 | ||
253 | &dev_attr_in0_input.attr, | |
254 | &dev_attr_in1_input.attr, | |
255 | &dev_attr_in2_input.attr, | |
256 | ||
257 | &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, | |
269 | ||
270 | &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 | }; | |
278 | ||
279 | static const struct attribute_group fscher_group = { | |
280 | .attrs = fscher_attributes, | |
281 | }; | |
282 | ||
1da177e4 LT |
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; | |
9a61bf63 | 335 | mutex_init(&data->update_lock); |
1da177e4 LT |
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 */ | |
87808be4 JD |
344 | if ((err = sysfs_create_group(&new_client->dev.kobj, &fscher_group))) |
345 | goto exit_detach; | |
346 | ||
943b0830 MH |
347 | data->class_dev = hwmon_device_register(&new_client->dev); |
348 | if (IS_ERR(data->class_dev)) { | |
349 | err = PTR_ERR(data->class_dev); | |
87808be4 | 350 | goto exit_remove_files; |
943b0830 MH |
351 | } |
352 | ||
1da177e4 LT |
353 | return 0; |
354 | ||
87808be4 JD |
355 | exit_remove_files: |
356 | sysfs_remove_group(&new_client->dev.kobj, &fscher_group); | |
943b0830 MH |
357 | exit_detach: |
358 | i2c_detach_client(new_client); | |
1da177e4 LT |
359 | exit_free: |
360 | kfree(data); | |
361 | exit: | |
362 | return err; | |
363 | } | |
364 | ||
365 | static int fscher_detach_client(struct i2c_client *client) | |
366 | { | |
943b0830 | 367 | struct fscher_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
368 | int err; |
369 | ||
943b0830 | 370 | hwmon_device_unregister(data->class_dev); |
87808be4 | 371 | sysfs_remove_group(&client->dev.kobj, &fscher_group); |
943b0830 | 372 | |
7bef5594 | 373 | if ((err = i2c_detach_client(client))) |
1da177e4 | 374 | return err; |
1da177e4 | 375 | |
943b0830 | 376 | kfree(data); |
1da177e4 LT |
377 | return 0; |
378 | } | |
379 | ||
380 | static 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 | ||
387 | static 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. */ | |
396 | static 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 | ||
404 | static 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 | ||
9a61bf63 | 409 | mutex_lock(&data->update_lock); |
1da177e4 LT |
410 | |
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 | ||
9a61bf63 | 449 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
450 | |
451 | return data; | |
452 | } | |
453 | ||
454 | ||
455 | ||
456 | #define FAN_INDEX_FROM_NUM(nr) ((nr) - 1) | |
457 | ||
458 | static 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 | ||
9a61bf63 | 464 | mutex_lock(&data->update_lock); |
1da177e4 LT |
465 | data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v; |
466 | fscher_write_value(client, reg, v); | |
9a61bf63 | 467 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
468 | return count; |
469 | } | |
470 | ||
471 | static 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 | ||
477 | static 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 | ||
9a61bf63 | 482 | mutex_lock(&data->update_lock); |
1da177e4 LT |
483 | 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)]); | |
9a61bf63 | 485 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
486 | return count; |
487 | } | |
488 | ||
489 | static 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 | ||
494 | static 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 | ||
9a61bf63 | 510 | mutex_lock(&data->update_lock); |
1da177e4 LT |
511 | |
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)]); | |
9a61bf63 | 517 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
518 | return count; |
519 | } | |
520 | ||
521 | static 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 | ||
529 | static 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 | ||
538 | static 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 | ||
9a61bf63 | 544 | mutex_lock(&data->update_lock); |
1da177e4 LT |
545 | data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v; |
546 | fscher_write_value(client, reg, v); | |
9a61bf63 | 547 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
548 | return count; |
549 | } | |
550 | ||
551 | static 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 | ||
559 | static 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 | ||
573 | static 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 | ||
580 | static 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 | ||
587 | static 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 | ||
595 | static 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 | ||
9a61bf63 | 601 | mutex_lock(&data->update_lock); |
1da177e4 LT |
602 | data->global_control &= ~v; |
603 | fscher_write_value(client, reg, v); | |
9a61bf63 | 604 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
605 | return count; |
606 | } | |
607 | ||
608 | static 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 | ||
616 | static 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 | ||
9a61bf63 | 623 | mutex_lock(&data->update_lock); |
1da177e4 LT |
624 | data->watchdog[2] &= ~0xf0; |
625 | data->watchdog[2] |= v; | |
626 | fscher_write_value(client, reg, data->watchdog[2]); | |
9a61bf63 | 627 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
628 | return count; |
629 | } | |
630 | ||
631 | static 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 | ||
637 | static 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 | ||
9a61bf63 | 643 | mutex_lock(&data->update_lock); |
1da177e4 LT |
644 | data->watchdog[1] &= ~v; |
645 | fscher_write_value(client, reg, v); | |
9a61bf63 | 646 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
647 | return count; |
648 | } | |
649 | ||
650 | static 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 | ||
656 | static 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 | ||
9a61bf63 | 661 | mutex_lock(&data->update_lock); |
1da177e4 LT |
662 | data->watchdog[0] = v; |
663 | fscher_write_value(client, reg, data->watchdog[0]); | |
9a61bf63 | 664 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
665 | return count; |
666 | } | |
667 | ||
668 | static 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 | ||
673 | static int __init sensors_fscher_init(void) | |
674 | { | |
675 | return i2c_add_driver(&fscher_driver); | |
676 | } | |
677 | ||
678 | static void __exit sensors_fscher_exit(void) | |
679 | { | |
680 | i2c_del_driver(&fscher_driver); | |
681 | } | |
682 | ||
683 | MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>"); | |
684 | MODULE_DESCRIPTION("FSC Hermes driver"); | |
685 | MODULE_LICENSE("GPL"); | |
686 | ||
687 | module_init(sensors_fscher_init); | |
688 | module_exit(sensors_fscher_exit); |