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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 | ||
25e9c86d | 43 | static const 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 | ||
c2df1591 JD |
109 | static int fscher_probe(struct i2c_client *client, |
110 | const struct i2c_device_id *id); | |
111 | static int fscher_detect(struct i2c_client *client, int kind, | |
112 | struct i2c_board_info *info); | |
113 | static int fscher_remove(struct i2c_client *client); | |
1da177e4 LT |
114 | static struct fscher_data *fscher_update_device(struct device *dev); |
115 | static void fscher_init_client(struct i2c_client *client); | |
116 | ||
117 | static int fscher_read_value(struct i2c_client *client, u8 reg); | |
118 | static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value); | |
119 | ||
120 | /* | |
121 | * Driver data (common to all clients) | |
122 | */ | |
123 | ||
c2df1591 JD |
124 | static const struct i2c_device_id fscher_id[] = { |
125 | { "fscher", fscher }, | |
126 | { } | |
127 | }; | |
128 | ||
1da177e4 | 129 | static struct i2c_driver fscher_driver = { |
c2df1591 | 130 | .class = I2C_CLASS_HWMON, |
cdaf7934 | 131 | .driver = { |
cdaf7934 LR |
132 | .name = "fscher", |
133 | }, | |
c2df1591 JD |
134 | .probe = fscher_probe, |
135 | .remove = fscher_remove, | |
136 | .id_table = fscher_id, | |
137 | .detect = fscher_detect, | |
138 | .address_data = &addr_data, | |
1da177e4 LT |
139 | }; |
140 | ||
141 | /* | |
142 | * Client data (each client gets its own) | |
143 | */ | |
144 | ||
145 | struct fscher_data { | |
1beeffe4 | 146 | struct device *hwmon_dev; |
9a61bf63 | 147 | struct mutex update_lock; |
1da177e4 LT |
148 | char valid; /* zero until following fields are valid */ |
149 | unsigned long last_updated; /* in jiffies */ | |
150 | ||
151 | /* register values */ | |
152 | u8 revision; /* revision of chip */ | |
153 | u8 global_event; /* global event status */ | |
154 | u8 global_control; /* global control register */ | |
155 | u8 watchdog[3]; /* watchdog */ | |
156 | u8 volt[3]; /* 12, 5, battery voltage */ | |
157 | u8 temp_act[3]; /* temperature */ | |
158 | u8 temp_status[3]; /* status of sensor */ | |
159 | u8 fan_act[3]; /* fans revolutions per second */ | |
160 | u8 fan_status[3]; /* fan status */ | |
161 | u8 fan_min[3]; /* fan min value for rps */ | |
162 | u8 fan_ripple[3]; /* divider for rps */ | |
163 | }; | |
164 | ||
165 | /* | |
166 | * Sysfs stuff | |
167 | */ | |
168 | ||
169 | #define sysfs_r(kind, sub, offset, reg) \ | |
170 | static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \ | |
30f74292 YI |
171 | static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \ |
172 | static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
173 | { \ |
174 | struct fscher_data *data = fscher_update_device(dev); \ | |
175 | return show_##kind##sub(data, buf, (offset)); \ | |
176 | } | |
177 | ||
178 | #define sysfs_w(kind, sub, offset, reg) \ | |
179 | static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \ | |
30f74292 YI |
180 | static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \ |
181 | static ssize_t set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \ | |
1da177e4 LT |
182 | { \ |
183 | struct i2c_client *client = to_i2c_client(dev); \ | |
184 | struct fscher_data *data = i2c_get_clientdata(client); \ | |
185 | return set_##kind##sub(client, data, buf, count, (offset), reg); \ | |
186 | } | |
187 | ||
188 | #define sysfs_rw_n(kind, sub, offset, reg) \ | |
189 | sysfs_r(kind, sub, offset, reg) \ | |
190 | sysfs_w(kind, sub, offset, reg) \ | |
191 | static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub); | |
192 | ||
193 | #define sysfs_rw(kind, sub, reg) \ | |
194 | sysfs_r(kind, sub, 0, reg) \ | |
195 | sysfs_w(kind, sub, 0, reg) \ | |
196 | static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub); | |
197 | ||
198 | #define sysfs_ro_n(kind, sub, offset, reg) \ | |
199 | sysfs_r(kind, sub, offset, reg) \ | |
200 | static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL); | |
201 | ||
202 | #define sysfs_ro(kind, sub, reg) \ | |
203 | sysfs_r(kind, sub, 0, reg) \ | |
204 | static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL); | |
205 | ||
206 | #define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \ | |
207 | sysfs_rw_n(pwm, , offset, reg_min) \ | |
208 | sysfs_rw_n(fan, _status, offset, reg_status) \ | |
209 | sysfs_rw_n(fan, _div , offset, reg_ripple) \ | |
210 | sysfs_ro_n(fan, _input , offset, reg_act) | |
211 | ||
212 | #define sysfs_temp(offset, reg_status, reg_act) \ | |
213 | sysfs_rw_n(temp, _status, offset, reg_status) \ | |
214 | sysfs_ro_n(temp, _input , offset, reg_act) | |
215 | ||
216 | #define sysfs_in(offset, reg_act) \ | |
217 | sysfs_ro_n(in, _input, offset, reg_act) | |
218 | ||
219 | #define sysfs_revision(reg_revision) \ | |
220 | sysfs_ro(revision, , reg_revision) | |
221 | ||
222 | #define sysfs_alarms(reg_events) \ | |
223 | sysfs_ro(alarms, , reg_events) | |
224 | ||
225 | #define sysfs_control(reg_control) \ | |
226 | sysfs_rw(control, , reg_control) | |
227 | ||
228 | #define sysfs_watchdog(reg_control, reg_status, reg_preset) \ | |
229 | sysfs_rw(watchdog, _control, reg_control) \ | |
230 | sysfs_rw(watchdog, _status , reg_status) \ | |
231 | sysfs_rw(watchdog, _preset , reg_preset) | |
232 | ||
233 | sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN, | |
234 | FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT) | |
235 | sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN, | |
236 | FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT) | |
237 | sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN, | |
238 | FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT) | |
239 | ||
240 | sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT) | |
241 | sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT) | |
242 | sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT) | |
243 | ||
244 | sysfs_in(0, FSCHER_REG_VOLT_12) | |
245 | sysfs_in(1, FSCHER_REG_VOLT_5) | |
246 | sysfs_in(2, FSCHER_REG_VOLT_BATT) | |
247 | ||
248 | sysfs_revision(FSCHER_REG_REVISION) | |
249 | sysfs_alarms(FSCHER_REG_EVENTS) | |
250 | sysfs_control(FSCHER_REG_CONTROL) | |
251 | sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET) | |
252 | ||
87808be4 JD |
253 | static struct attribute *fscher_attributes[] = { |
254 | &dev_attr_revision.attr, | |
255 | &dev_attr_alarms.attr, | |
256 | &dev_attr_control.attr, | |
257 | ||
258 | &dev_attr_watchdog_status.attr, | |
259 | &dev_attr_watchdog_control.attr, | |
260 | &dev_attr_watchdog_preset.attr, | |
261 | ||
262 | &dev_attr_in0_input.attr, | |
263 | &dev_attr_in1_input.attr, | |
264 | &dev_attr_in2_input.attr, | |
265 | ||
266 | &dev_attr_fan1_status.attr, | |
267 | &dev_attr_fan1_div.attr, | |
268 | &dev_attr_fan1_input.attr, | |
269 | &dev_attr_pwm1.attr, | |
270 | &dev_attr_fan2_status.attr, | |
271 | &dev_attr_fan2_div.attr, | |
272 | &dev_attr_fan2_input.attr, | |
273 | &dev_attr_pwm2.attr, | |
274 | &dev_attr_fan3_status.attr, | |
275 | &dev_attr_fan3_div.attr, | |
276 | &dev_attr_fan3_input.attr, | |
277 | &dev_attr_pwm3.attr, | |
278 | ||
279 | &dev_attr_temp1_status.attr, | |
280 | &dev_attr_temp1_input.attr, | |
281 | &dev_attr_temp2_status.attr, | |
282 | &dev_attr_temp2_input.attr, | |
283 | &dev_attr_temp3_status.attr, | |
284 | &dev_attr_temp3_input.attr, | |
285 | NULL | |
286 | }; | |
287 | ||
288 | static const struct attribute_group fscher_group = { | |
289 | .attrs = fscher_attributes, | |
290 | }; | |
291 | ||
1da177e4 LT |
292 | /* |
293 | * Real code | |
294 | */ | |
295 | ||
c2df1591 JD |
296 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
297 | static int fscher_detect(struct i2c_client *new_client, int kind, | |
298 | struct i2c_board_info *info) | |
1da177e4 | 299 | { |
c2df1591 | 300 | struct i2c_adapter *adapter = new_client->adapter; |
1da177e4 LT |
301 | |
302 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
c2df1591 | 303 | return -ENODEV; |
1da177e4 LT |
304 | |
305 | /* Do the remaining detection unless force or force_fscher parameter */ | |
306 | if (kind < 0) { | |
307 | if ((i2c_smbus_read_byte_data(new_client, | |
308 | FSCHER_REG_IDENT_0) != 0x48) /* 'H' */ | |
309 | || (i2c_smbus_read_byte_data(new_client, | |
310 | FSCHER_REG_IDENT_1) != 0x45) /* 'E' */ | |
311 | || (i2c_smbus_read_byte_data(new_client, | |
312 | FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */ | |
c2df1591 JD |
313 | return -ENODEV; |
314 | } | |
315 | ||
316 | strlcpy(info->type, "fscher", I2C_NAME_SIZE); | |
317 | ||
318 | return 0; | |
319 | } | |
320 | ||
321 | static int fscher_probe(struct i2c_client *new_client, | |
322 | const struct i2c_device_id *id) | |
323 | { | |
324 | struct fscher_data *data; | |
325 | int err; | |
326 | ||
327 | data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL); | |
328 | if (!data) { | |
329 | err = -ENOMEM; | |
330 | goto exit; | |
1da177e4 LT |
331 | } |
332 | ||
c2df1591 | 333 | i2c_set_clientdata(new_client, data); |
1da177e4 | 334 | data->valid = 0; |
9a61bf63 | 335 | mutex_init(&data->update_lock); |
1da177e4 | 336 | |
1da177e4 LT |
337 | fscher_init_client(new_client); |
338 | ||
339 | /* Register sysfs hooks */ | |
87808be4 | 340 | if ((err = sysfs_create_group(&new_client->dev.kobj, &fscher_group))) |
c2df1591 | 341 | goto exit_free; |
87808be4 | 342 | |
1beeffe4 TJ |
343 | data->hwmon_dev = hwmon_device_register(&new_client->dev); |
344 | if (IS_ERR(data->hwmon_dev)) { | |
345 | err = PTR_ERR(data->hwmon_dev); | |
87808be4 | 346 | goto exit_remove_files; |
943b0830 MH |
347 | } |
348 | ||
1da177e4 LT |
349 | return 0; |
350 | ||
87808be4 JD |
351 | exit_remove_files: |
352 | sysfs_remove_group(&new_client->dev.kobj, &fscher_group); | |
1da177e4 LT |
353 | exit_free: |
354 | kfree(data); | |
355 | exit: | |
356 | return err; | |
357 | } | |
358 | ||
c2df1591 | 359 | static int fscher_remove(struct i2c_client *client) |
1da177e4 | 360 | { |
943b0830 | 361 | struct fscher_data *data = i2c_get_clientdata(client); |
1da177e4 | 362 | |
1beeffe4 | 363 | hwmon_device_unregister(data->hwmon_dev); |
87808be4 | 364 | sysfs_remove_group(&client->dev.kobj, &fscher_group); |
943b0830 | 365 | |
943b0830 | 366 | kfree(data); |
1da177e4 LT |
367 | return 0; |
368 | } | |
369 | ||
370 | static int fscher_read_value(struct i2c_client *client, u8 reg) | |
371 | { | |
372 | dev_dbg(&client->dev, "read reg 0x%02x\n", reg); | |
373 | ||
374 | return i2c_smbus_read_byte_data(client, reg); | |
375 | } | |
376 | ||
377 | static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value) | |
378 | { | |
379 | dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n", | |
380 | reg, value); | |
381 | ||
382 | return i2c_smbus_write_byte_data(client, reg, value); | |
383 | } | |
384 | ||
385 | /* Called when we have found a new FSC Hermes. */ | |
386 | static void fscher_init_client(struct i2c_client *client) | |
387 | { | |
388 | struct fscher_data *data = i2c_get_clientdata(client); | |
389 | ||
390 | /* Read revision from chip */ | |
391 | data->revision = fscher_read_value(client, FSCHER_REG_REVISION); | |
392 | } | |
393 | ||
394 | static struct fscher_data *fscher_update_device(struct device *dev) | |
395 | { | |
396 | struct i2c_client *client = to_i2c_client(dev); | |
397 | struct fscher_data *data = i2c_get_clientdata(client); | |
398 | ||
9a61bf63 | 399 | mutex_lock(&data->update_lock); |
1da177e4 LT |
400 | |
401 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { | |
402 | ||
403 | dev_dbg(&client->dev, "Starting fscher update\n"); | |
404 | ||
405 | data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT); | |
406 | data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT); | |
407 | data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT); | |
408 | data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE); | |
409 | data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE); | |
410 | data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE); | |
411 | ||
412 | data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12); | |
413 | data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5); | |
414 | data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT); | |
415 | ||
416 | data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT); | |
417 | data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT); | |
418 | data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT); | |
419 | data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE); | |
420 | data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE); | |
421 | data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE); | |
422 | data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN); | |
423 | data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN); | |
424 | data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN); | |
425 | data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE); | |
426 | data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE); | |
427 | data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE); | |
428 | ||
429 | data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET); | |
430 | data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE); | |
431 | data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL); | |
432 | ||
433 | data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE); | |
5cccf4a1 HG |
434 | data->global_control = fscher_read_value(client, |
435 | FSCHER_REG_CONTROL); | |
1da177e4 LT |
436 | |
437 | data->last_updated = jiffies; | |
438 | data->valid = 1; | |
439 | } | |
440 | ||
9a61bf63 | 441 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
442 | |
443 | return data; | |
444 | } | |
445 | ||
446 | ||
447 | ||
448 | #define FAN_INDEX_FROM_NUM(nr) ((nr) - 1) | |
449 | ||
450 | static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data, | |
451 | const char *buf, size_t count, int nr, int reg) | |
452 | { | |
453 | /* bits 0..1, 3..7 reserved => mask with 0x04 */ | |
454 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04; | |
455 | ||
9a61bf63 | 456 | mutex_lock(&data->update_lock); |
1da177e4 LT |
457 | data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v; |
458 | fscher_write_value(client, reg, v); | |
9a61bf63 | 459 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
460 | return count; |
461 | } | |
462 | ||
463 | static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr) | |
464 | { | |
465 | /* bits 0..1, 3..7 reserved => mask with 0x04 */ | |
466 | return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04); | |
467 | } | |
468 | ||
469 | static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data, | |
470 | const char *buf, size_t count, int nr, int reg) | |
471 | { | |
472 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
473 | ||
9a61bf63 | 474 | mutex_lock(&data->update_lock); |
1da177e4 LT |
475 | data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v; |
476 | fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]); | |
9a61bf63 | 477 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
478 | return count; |
479 | } | |
480 | ||
481 | static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr) | |
482 | { | |
483 | return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]); | |
484 | } | |
485 | ||
486 | static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data, | |
487 | const char *buf, size_t count, int nr, int reg) | |
488 | { | |
489 | /* supported values: 2, 4, 8 */ | |
490 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
491 | ||
492 | switch (v) { | |
493 | case 2: v = 1; break; | |
494 | case 4: v = 2; break; | |
495 | case 8: v = 3; break; | |
496 | default: | |
497 | dev_err(&client->dev, "fan_div value %ld not " | |
498 | "supported. Choose one of 2, 4 or 8!\n", v); | |
499 | return -EINVAL; | |
500 | } | |
501 | ||
9a61bf63 | 502 | mutex_lock(&data->update_lock); |
1da177e4 LT |
503 | |
504 | /* bits 2..7 reserved => mask with 0x03 */ | |
505 | data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03; | |
506 | data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v; | |
507 | ||
508 | fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]); | |
9a61bf63 | 509 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
510 | return count; |
511 | } | |
512 | ||
513 | static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr) | |
514 | { | |
515 | /* bits 2..7 reserved => mask with 0x03 */ | |
516 | return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03)); | |
517 | } | |
518 | ||
519 | #define RPM_FROM_REG(val) (val*60) | |
520 | ||
521 | static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr) | |
522 | { | |
523 | return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)])); | |
524 | } | |
525 | ||
526 | ||
527 | ||
528 | #define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1) | |
529 | ||
530 | static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data, | |
531 | const char *buf, size_t count, int nr, int reg) | |
532 | { | |
533 | /* bits 2..7 reserved, 0 read only => mask with 0x02 */ | |
534 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; | |
535 | ||
9a61bf63 | 536 | mutex_lock(&data->update_lock); |
1da177e4 LT |
537 | data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v; |
538 | fscher_write_value(client, reg, v); | |
9a61bf63 | 539 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
540 | return count; |
541 | } | |
542 | ||
543 | static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr) | |
544 | { | |
545 | /* bits 2..7 reserved => mask with 0x03 */ | |
546 | return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03); | |
547 | } | |
548 | ||
549 | #define TEMP_FROM_REG(val) (((val) - 128) * 1000) | |
550 | ||
551 | static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr) | |
552 | { | |
553 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)])); | |
554 | } | |
555 | ||
556 | /* | |
557 | * The final conversion is specified in sensors.conf, as it depends on | |
558 | * mainboard specific values. We export the registers contents as | |
559 | * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much | |
560 | * sense per se, but it minimizes the conversions count and keeps the | |
561 | * values within a usual range. | |
562 | */ | |
563 | #define VOLT_FROM_REG(val) ((val) * 10) | |
564 | ||
565 | static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr) | |
566 | { | |
567 | return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr])); | |
568 | } | |
569 | ||
570 | ||
571 | ||
572 | static ssize_t show_revision(struct fscher_data *data, char *buf, int nr) | |
573 | { | |
574 | return sprintf(buf, "%u\n", data->revision); | |
575 | } | |
576 | ||
577 | ||
578 | ||
579 | static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr) | |
580 | { | |
581 | /* bits 2, 5..6 reserved => mask with 0x9b */ | |
582 | return sprintf(buf, "%u\n", data->global_event & 0x9b); | |
583 | } | |
584 | ||
585 | ||
586 | ||
587 | static ssize_t set_control(struct i2c_client *client, struct fscher_data *data, | |
588 | const char *buf, size_t count, int nr, int reg) | |
589 | { | |
590 | /* bits 1..7 reserved => mask with 0x01 */ | |
591 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01; | |
592 | ||
9a61bf63 | 593 | mutex_lock(&data->update_lock); |
794f5434 | 594 | data->global_control = v; |
1da177e4 | 595 | fscher_write_value(client, reg, v); |
9a61bf63 | 596 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
597 | return count; |
598 | } | |
599 | ||
600 | static ssize_t show_control(struct fscher_data *data, char *buf, int nr) | |
601 | { | |
602 | /* bits 1..7 reserved => mask with 0x01 */ | |
603 | return sprintf(buf, "%u\n", data->global_control & 0x01); | |
604 | } | |
605 | ||
606 | ||
607 | ||
608 | static ssize_t set_watchdog_control(struct i2c_client *client, struct | |
609 | fscher_data *data, const char *buf, size_t count, | |
610 | int nr, int reg) | |
611 | { | |
612 | /* bits 0..3 reserved => mask with 0xf0 */ | |
613 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0; | |
614 | ||
9a61bf63 | 615 | mutex_lock(&data->update_lock); |
1da177e4 LT |
616 | data->watchdog[2] &= ~0xf0; |
617 | data->watchdog[2] |= v; | |
618 | fscher_write_value(client, reg, data->watchdog[2]); | |
9a61bf63 | 619 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
620 | return count; |
621 | } | |
622 | ||
623 | static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr) | |
624 | { | |
625 | /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */ | |
626 | return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0); | |
627 | } | |
628 | ||
629 | static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data, | |
630 | const char *buf, size_t count, int nr, int reg) | |
631 | { | |
632 | /* bits 0, 2..7 reserved => mask with 0x02 */ | |
633 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; | |
634 | ||
9a61bf63 | 635 | mutex_lock(&data->update_lock); |
1da177e4 LT |
636 | data->watchdog[1] &= ~v; |
637 | fscher_write_value(client, reg, v); | |
9a61bf63 | 638 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
639 | return count; |
640 | } | |
641 | ||
642 | static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr) | |
643 | { | |
644 | /* bits 0, 2..7 reserved => mask with 0x02 */ | |
645 | return sprintf(buf, "%u\n", data->watchdog[1] & 0x02); | |
646 | } | |
647 | ||
648 | static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data, | |
649 | const char *buf, size_t count, int nr, int reg) | |
650 | { | |
651 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff; | |
652 | ||
9a61bf63 | 653 | mutex_lock(&data->update_lock); |
1da177e4 LT |
654 | data->watchdog[0] = v; |
655 | fscher_write_value(client, reg, data->watchdog[0]); | |
9a61bf63 | 656 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
657 | return count; |
658 | } | |
659 | ||
660 | static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr) | |
661 | { | |
662 | return sprintf(buf, "%u\n", data->watchdog[0]); | |
663 | } | |
664 | ||
665 | static int __init sensors_fscher_init(void) | |
666 | { | |
667 | return i2c_add_driver(&fscher_driver); | |
668 | } | |
669 | ||
670 | static void __exit sensors_fscher_exit(void) | |
671 | { | |
672 | i2c_del_driver(&fscher_driver); | |
673 | } | |
674 | ||
675 | MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>"); | |
676 | MODULE_DESCRIPTION("FSC Hermes driver"); | |
677 | MODULE_LICENSE("GPL"); | |
678 | ||
679 | module_init(sensors_fscher_init); | |
680 | module_exit(sensors_fscher_exit); |