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569ff102 HG |
1 | /* fschmd.c |
2 | * | |
3 | * Copyright (C) 2007 Hans de Goede <j.w.r.degoede@hhs.nl> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | */ | |
19 | ||
20 | /* | |
21 | * Merged Fujitsu Siemens hwmon driver, supporting the Poseidon, Hermes, | |
22 | * Scylla, Heracles and Heimdall chips | |
23 | * | |
24 | * Based on the original 2.4 fscscy, 2.6 fscpos, 2.6 fscher and 2.6 | |
25 | * (candidate) fschmd drivers: | |
26 | * Copyright (C) 2006 Thilo Cestonaro | |
27 | * <thilo.cestonaro.external@fujitsu-siemens.com> | |
28 | * Copyright (C) 2004, 2005 Stefan Ott <stefan@desire.ch> | |
29 | * Copyright (C) 2003, 2004 Reinhard Nissl <rnissl@gmx.de> | |
30 | * Copyright (c) 2001 Martin Knoblauch <mkn@teraport.de, knobi@knobisoft.de> | |
31 | * Copyright (C) 2000 Hermann Jung <hej@odn.de> | |
32 | */ | |
33 | ||
34 | #include <linux/module.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/slab.h> | |
37 | #include <linux/jiffies.h> | |
38 | #include <linux/i2c.h> | |
39 | #include <linux/hwmon.h> | |
40 | #include <linux/hwmon-sysfs.h> | |
41 | #include <linux/err.h> | |
42 | #include <linux/mutex.h> | |
43 | #include <linux/sysfs.h> | |
7845cd79 | 44 | #include <linux/dmi.h> |
569ff102 HG |
45 | |
46 | /* Addresses to scan */ | |
25e9c86d | 47 | static const unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; |
569ff102 HG |
48 | |
49 | /* Insmod parameters */ | |
50 | I2C_CLIENT_INSMOD_5(fscpos, fscher, fscscy, fschrc, fschmd); | |
51 | ||
52 | /* | |
53 | * The FSCHMD registers and other defines | |
54 | */ | |
55 | ||
56 | /* chip identification */ | |
57 | #define FSCHMD_REG_IDENT_0 0x00 | |
58 | #define FSCHMD_REG_IDENT_1 0x01 | |
59 | #define FSCHMD_REG_IDENT_2 0x02 | |
60 | #define FSCHMD_REG_REVISION 0x03 | |
61 | ||
62 | /* global control and status */ | |
63 | #define FSCHMD_REG_EVENT_STATE 0x04 | |
64 | #define FSCHMD_REG_CONTROL 0x05 | |
65 | ||
66 | #define FSCHMD_CONTROL_ALERT_LED_MASK 0x01 | |
67 | ||
68 | /* watchdog (support to be implemented) */ | |
69 | #define FSCHMD_REG_WDOG_PRESET 0x28 | |
70 | #define FSCHMD_REG_WDOG_STATE 0x23 | |
71 | #define FSCHMD_REG_WDOG_CONTROL 0x21 | |
72 | ||
73 | /* voltages, weird order is to keep the same order as the old drivers */ | |
74 | static const u8 FSCHMD_REG_VOLT[3] = { 0x45, 0x42, 0x48 }; | |
75 | ||
76 | /* minimum pwm at which the fan is driven (pwm can by increased depending on | |
77 | the temp. Notice that for the scy some fans share there minimum speed. | |
78 | Also notice that with the scy the sensor order is different then with the | |
79 | other chips, this order was in the 2.4 driver and kept for consistency. */ | |
80 | static const u8 FSCHMD_REG_FAN_MIN[5][6] = { | |
81 | { 0x55, 0x65 }, /* pos */ | |
82 | { 0x55, 0x65, 0xb5 }, /* her */ | |
83 | { 0x65, 0x65, 0x55, 0xa5, 0x55, 0xa5 }, /* scy */ | |
84 | { 0x55, 0x65, 0xa5, 0xb5 }, /* hrc */ | |
85 | { 0x55, 0x65, 0xa5, 0xb5, 0xc5 }, /* hmd */ | |
86 | }; | |
87 | ||
88 | /* actual fan speed */ | |
89 | static const u8 FSCHMD_REG_FAN_ACT[5][6] = { | |
90 | { 0x0e, 0x6b, 0xab }, /* pos */ | |
91 | { 0x0e, 0x6b, 0xbb }, /* her */ | |
92 | { 0x6b, 0x6c, 0x0e, 0xab, 0x5c, 0xbb }, /* scy */ | |
93 | { 0x0e, 0x6b, 0xab, 0xbb }, /* hrc */ | |
94 | { 0x5b, 0x6b, 0xab, 0xbb, 0xcb }, /* hmd */ | |
95 | }; | |
96 | ||
97 | /* fan status registers */ | |
98 | static const u8 FSCHMD_REG_FAN_STATE[5][6] = { | |
99 | { 0x0d, 0x62, 0xa2 }, /* pos */ | |
100 | { 0x0d, 0x62, 0xb2 }, /* her */ | |
101 | { 0x62, 0x61, 0x0d, 0xa2, 0x52, 0xb2 }, /* scy */ | |
102 | { 0x0d, 0x62, 0xa2, 0xb2 }, /* hrc */ | |
103 | { 0x52, 0x62, 0xa2, 0xb2, 0xc2 }, /* hmd */ | |
104 | }; | |
105 | ||
106 | /* fan ripple / divider registers */ | |
107 | static const u8 FSCHMD_REG_FAN_RIPPLE[5][6] = { | |
108 | { 0x0f, 0x6f, 0xaf }, /* pos */ | |
109 | { 0x0f, 0x6f, 0xbf }, /* her */ | |
110 | { 0x6f, 0x6f, 0x0f, 0xaf, 0x0f, 0xbf }, /* scy */ | |
111 | { 0x0f, 0x6f, 0xaf, 0xbf }, /* hrc */ | |
112 | { 0x5f, 0x6f, 0xaf, 0xbf, 0xcf }, /* hmd */ | |
113 | }; | |
114 | ||
115 | static const int FSCHMD_NO_FAN_SENSORS[5] = { 3, 3, 6, 4, 5 }; | |
116 | ||
117 | /* Fan status register bitmasks */ | |
118 | #define FSCHMD_FAN_ALARM_MASK 0x04 /* called fault by FSC! */ | |
119 | #define FSCHMD_FAN_NOT_PRESENT_MASK 0x08 /* not documented */ | |
120 | ||
121 | ||
122 | /* actual temperature registers */ | |
123 | static const u8 FSCHMD_REG_TEMP_ACT[5][5] = { | |
124 | { 0x64, 0x32, 0x35 }, /* pos */ | |
125 | { 0x64, 0x32, 0x35 }, /* her */ | |
126 | { 0x64, 0xD0, 0x32, 0x35 }, /* scy */ | |
127 | { 0x64, 0x32, 0x35 }, /* hrc */ | |
128 | { 0x70, 0x80, 0x90, 0xd0, 0xe0 }, /* hmd */ | |
129 | }; | |
130 | ||
131 | /* temperature state registers */ | |
132 | static const u8 FSCHMD_REG_TEMP_STATE[5][5] = { | |
133 | { 0x71, 0x81, 0x91 }, /* pos */ | |
134 | { 0x71, 0x81, 0x91 }, /* her */ | |
135 | { 0x71, 0xd1, 0x81, 0x91 }, /* scy */ | |
136 | { 0x71, 0x81, 0x91 }, /* hrc */ | |
7dcf9a31 | 137 | { 0x71, 0x81, 0x91, 0xd1, 0xe1 }, /* hmd */ |
569ff102 HG |
138 | }; |
139 | ||
140 | /* temperature high limit registers, FSC does not document these. Proven to be | |
141 | there with field testing on the fscher and fschrc, already supported / used | |
142 | in the fscscy 2.4 driver. FSC has confirmed that the fschmd has registers | |
143 | at these addresses, but doesn't want to confirm they are the same as with | |
144 | the fscher?? */ | |
145 | static const u8 FSCHMD_REG_TEMP_LIMIT[5][5] = { | |
146 | { 0, 0, 0 }, /* pos */ | |
147 | { 0x76, 0x86, 0x96 }, /* her */ | |
148 | { 0x76, 0xd6, 0x86, 0x96 }, /* scy */ | |
149 | { 0x76, 0x86, 0x96 }, /* hrc */ | |
7dcf9a31 | 150 | { 0x76, 0x86, 0x96, 0xd6, 0xe6 }, /* hmd */ |
569ff102 HG |
151 | }; |
152 | ||
153 | /* These were found through experimenting with an fscher, currently they are | |
154 | not used, but we keep them around for future reference. | |
155 | static const u8 FSCHER_REG_TEMP_AUTOP1[] = { 0x73, 0x83, 0x93 }; | |
156 | static const u8 FSCHER_REG_TEMP_AUTOP2[] = { 0x75, 0x85, 0x95 }; */ | |
157 | ||
158 | static const int FSCHMD_NO_TEMP_SENSORS[5] = { 3, 3, 4, 3, 5 }; | |
159 | ||
160 | /* temp status register bitmasks */ | |
161 | #define FSCHMD_TEMP_WORKING_MASK 0x01 | |
162 | #define FSCHMD_TEMP_ALERT_MASK 0x02 | |
163 | /* there only really is an alarm if the sensor is working and alert == 1 */ | |
164 | #define FSCHMD_TEMP_ALARM_MASK \ | |
165 | (FSCHMD_TEMP_WORKING_MASK | FSCHMD_TEMP_ALERT_MASK) | |
166 | ||
167 | /* our driver name */ | |
168 | #define FSCHMD_NAME "fschmd" | |
169 | ||
170 | /* | |
171 | * Functions declarations | |
172 | */ | |
173 | ||
40ac1994 JD |
174 | static int fschmd_probe(struct i2c_client *client, |
175 | const struct i2c_device_id *id); | |
176 | static int fschmd_detect(struct i2c_client *client, int kind, | |
177 | struct i2c_board_info *info); | |
178 | static int fschmd_remove(struct i2c_client *client); | |
569ff102 HG |
179 | static struct fschmd_data *fschmd_update_device(struct device *dev); |
180 | ||
181 | /* | |
182 | * Driver data (common to all clients) | |
183 | */ | |
184 | ||
40ac1994 JD |
185 | static const struct i2c_device_id fschmd_id[] = { |
186 | { "fscpos", fscpos }, | |
187 | { "fscher", fscher }, | |
188 | { "fscscy", fscscy }, | |
189 | { "fschrc", fschrc }, | |
190 | { "fschmd", fschmd }, | |
191 | { } | |
192 | }; | |
193 | MODULE_DEVICE_TABLE(i2c, fschmd_id); | |
194 | ||
569ff102 | 195 | static struct i2c_driver fschmd_driver = { |
40ac1994 | 196 | .class = I2C_CLASS_HWMON, |
569ff102 HG |
197 | .driver = { |
198 | .name = FSCHMD_NAME, | |
199 | }, | |
40ac1994 JD |
200 | .probe = fschmd_probe, |
201 | .remove = fschmd_remove, | |
202 | .id_table = fschmd_id, | |
203 | .detect = fschmd_detect, | |
204 | .address_data = &addr_data, | |
569ff102 HG |
205 | }; |
206 | ||
207 | /* | |
208 | * Client data (each client gets its own) | |
209 | */ | |
210 | ||
211 | struct fschmd_data { | |
569ff102 HG |
212 | struct device *hwmon_dev; |
213 | struct mutex update_lock; | |
214 | int kind; | |
215 | char valid; /* zero until following fields are valid */ | |
216 | unsigned long last_updated; /* in jiffies */ | |
217 | ||
218 | /* register values */ | |
219 | u8 global_control; /* global control register */ | |
220 | u8 volt[3]; /* 12, 5, battery voltage */ | |
221 | u8 temp_act[5]; /* temperature */ | |
222 | u8 temp_status[5]; /* status of sensor */ | |
223 | u8 temp_max[5]; /* high temp limit, notice: undocumented! */ | |
224 | u8 fan_act[6]; /* fans revolutions per second */ | |
225 | u8 fan_status[6]; /* fan status */ | |
226 | u8 fan_min[6]; /* fan min value for rps */ | |
227 | u8 fan_ripple[6]; /* divider for rps */ | |
228 | }; | |
229 | ||
7845cd79 HG |
230 | /* Global variables to hold information read from special DMI tables, which are |
231 | available on FSC machines with an fscher or later chip. */ | |
232 | static int dmi_mult[3] = { 490, 200, 100 }; | |
233 | static int dmi_offset[3] = { 0, 0, 0 }; | |
234 | static int dmi_vref = -1; | |
235 | ||
236 | ||
569ff102 HG |
237 | /* |
238 | * Sysfs attr show / store functions | |
239 | */ | |
240 | ||
241 | static ssize_t show_in_value(struct device *dev, | |
242 | struct device_attribute *devattr, char *buf) | |
243 | { | |
244 | const int max_reading[3] = { 14200, 6600, 3300 }; | |
245 | int index = to_sensor_dev_attr(devattr)->index; | |
246 | struct fschmd_data *data = fschmd_update_device(dev); | |
247 | ||
7845cd79 HG |
248 | /* fscher / fschrc - 1 as data->kind is an array index, not a chips */ |
249 | if (data->kind == (fscher - 1) || data->kind >= (fschrc - 1)) | |
250 | return sprintf(buf, "%d\n", (data->volt[index] * dmi_vref * | |
251 | dmi_mult[index]) / 255 + dmi_offset[index]); | |
252 | else | |
253 | return sprintf(buf, "%d\n", (data->volt[index] * | |
254 | max_reading[index] + 128) / 255); | |
569ff102 HG |
255 | } |
256 | ||
257 | ||
258 | #define TEMP_FROM_REG(val) (((val) - 128) * 1000) | |
259 | ||
260 | static ssize_t show_temp_value(struct device *dev, | |
261 | struct device_attribute *devattr, char *buf) | |
262 | { | |
263 | int index = to_sensor_dev_attr(devattr)->index; | |
264 | struct fschmd_data *data = fschmd_update_device(dev); | |
265 | ||
266 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[index])); | |
267 | } | |
268 | ||
269 | static ssize_t show_temp_max(struct device *dev, | |
270 | struct device_attribute *devattr, char *buf) | |
271 | { | |
272 | int index = to_sensor_dev_attr(devattr)->index; | |
273 | struct fschmd_data *data = fschmd_update_device(dev); | |
274 | ||
275 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[index])); | |
276 | } | |
277 | ||
278 | static ssize_t store_temp_max(struct device *dev, struct device_attribute | |
279 | *devattr, const char *buf, size_t count) | |
280 | { | |
281 | int index = to_sensor_dev_attr(devattr)->index; | |
282 | struct fschmd_data *data = dev_get_drvdata(dev); | |
283 | long v = simple_strtol(buf, NULL, 10) / 1000; | |
284 | ||
285 | v = SENSORS_LIMIT(v, -128, 127) + 128; | |
286 | ||
287 | mutex_lock(&data->update_lock); | |
40ac1994 | 288 | i2c_smbus_write_byte_data(to_i2c_client(dev), |
569ff102 HG |
289 | FSCHMD_REG_TEMP_LIMIT[data->kind][index], v); |
290 | data->temp_max[index] = v; | |
291 | mutex_unlock(&data->update_lock); | |
292 | ||
293 | return count; | |
294 | } | |
295 | ||
296 | static ssize_t show_temp_fault(struct device *dev, | |
297 | struct device_attribute *devattr, char *buf) | |
298 | { | |
299 | int index = to_sensor_dev_attr(devattr)->index; | |
300 | struct fschmd_data *data = fschmd_update_device(dev); | |
301 | ||
302 | /* bit 0 set means sensor working ok, so no fault! */ | |
303 | if (data->temp_status[index] & FSCHMD_TEMP_WORKING_MASK) | |
304 | return sprintf(buf, "0\n"); | |
305 | else | |
306 | return sprintf(buf, "1\n"); | |
307 | } | |
308 | ||
309 | static ssize_t show_temp_alarm(struct device *dev, | |
310 | struct device_attribute *devattr, char *buf) | |
311 | { | |
312 | int index = to_sensor_dev_attr(devattr)->index; | |
313 | struct fschmd_data *data = fschmd_update_device(dev); | |
314 | ||
315 | if ((data->temp_status[index] & FSCHMD_TEMP_ALARM_MASK) == | |
316 | FSCHMD_TEMP_ALARM_MASK) | |
317 | return sprintf(buf, "1\n"); | |
318 | else | |
319 | return sprintf(buf, "0\n"); | |
320 | } | |
321 | ||
322 | ||
323 | #define RPM_FROM_REG(val) ((val) * 60) | |
324 | ||
325 | static ssize_t show_fan_value(struct device *dev, | |
326 | struct device_attribute *devattr, char *buf) | |
327 | { | |
328 | int index = to_sensor_dev_attr(devattr)->index; | |
329 | struct fschmd_data *data = fschmd_update_device(dev); | |
330 | ||
331 | return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[index])); | |
332 | } | |
333 | ||
334 | static ssize_t show_fan_div(struct device *dev, | |
335 | struct device_attribute *devattr, char *buf) | |
336 | { | |
337 | int index = to_sensor_dev_attr(devattr)->index; | |
338 | struct fschmd_data *data = fschmd_update_device(dev); | |
339 | ||
340 | /* bits 2..7 reserved => mask with 3 */ | |
341 | return sprintf(buf, "%d\n", 1 << (data->fan_ripple[index] & 3)); | |
342 | } | |
343 | ||
344 | static ssize_t store_fan_div(struct device *dev, struct device_attribute | |
345 | *devattr, const char *buf, size_t count) | |
346 | { | |
347 | u8 reg; | |
348 | int index = to_sensor_dev_attr(devattr)->index; | |
349 | struct fschmd_data *data = dev_get_drvdata(dev); | |
350 | /* supported values: 2, 4, 8 */ | |
351 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
352 | ||
353 | switch (v) { | |
354 | case 2: v = 1; break; | |
355 | case 4: v = 2; break; | |
356 | case 8: v = 3; break; | |
357 | default: | |
358 | dev_err(dev, "fan_div value %lu not supported. " | |
359 | "Choose one of 2, 4 or 8!\n", v); | |
360 | return -EINVAL; | |
361 | } | |
362 | ||
363 | mutex_lock(&data->update_lock); | |
364 | ||
40ac1994 | 365 | reg = i2c_smbus_read_byte_data(to_i2c_client(dev), |
569ff102 HG |
366 | FSCHMD_REG_FAN_RIPPLE[data->kind][index]); |
367 | ||
368 | /* bits 2..7 reserved => mask with 0x03 */ | |
369 | reg &= ~0x03; | |
370 | reg |= v; | |
371 | ||
40ac1994 | 372 | i2c_smbus_write_byte_data(to_i2c_client(dev), |
569ff102 HG |
373 | FSCHMD_REG_FAN_RIPPLE[data->kind][index], reg); |
374 | ||
375 | data->fan_ripple[index] = reg; | |
376 | ||
377 | mutex_unlock(&data->update_lock); | |
378 | ||
379 | return count; | |
380 | } | |
381 | ||
382 | static ssize_t show_fan_alarm(struct device *dev, | |
383 | struct device_attribute *devattr, char *buf) | |
384 | { | |
385 | int index = to_sensor_dev_attr(devattr)->index; | |
386 | struct fschmd_data *data = fschmd_update_device(dev); | |
387 | ||
388 | if (data->fan_status[index] & FSCHMD_FAN_ALARM_MASK) | |
389 | return sprintf(buf, "1\n"); | |
390 | else | |
391 | return sprintf(buf, "0\n"); | |
392 | } | |
393 | ||
394 | static ssize_t show_fan_fault(struct device *dev, | |
395 | struct device_attribute *devattr, char *buf) | |
396 | { | |
397 | int index = to_sensor_dev_attr(devattr)->index; | |
398 | struct fschmd_data *data = fschmd_update_device(dev); | |
399 | ||
400 | if (data->fan_status[index] & FSCHMD_FAN_NOT_PRESENT_MASK) | |
401 | return sprintf(buf, "1\n"); | |
402 | else | |
403 | return sprintf(buf, "0\n"); | |
404 | } | |
405 | ||
406 | ||
407 | static ssize_t show_pwm_auto_point1_pwm(struct device *dev, | |
408 | struct device_attribute *devattr, char *buf) | |
409 | { | |
410 | int index = to_sensor_dev_attr(devattr)->index; | |
411 | int val = fschmd_update_device(dev)->fan_min[index]; | |
412 | ||
413 | /* 0 = allow turning off, 1-255 = 50-100% */ | |
414 | if (val) | |
415 | val = val / 2 + 128; | |
416 | ||
417 | return sprintf(buf, "%d\n", val); | |
418 | } | |
419 | ||
420 | static ssize_t store_pwm_auto_point1_pwm(struct device *dev, | |
421 | struct device_attribute *devattr, const char *buf, size_t count) | |
422 | { | |
423 | int index = to_sensor_dev_attr(devattr)->index; | |
424 | struct fschmd_data *data = dev_get_drvdata(dev); | |
425 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
426 | ||
427 | /* register: 0 = allow turning off, 1-255 = 50-100% */ | |
428 | if (v) { | |
429 | v = SENSORS_LIMIT(v, 128, 255); | |
430 | v = (v - 128) * 2 + 1; | |
431 | } | |
432 | ||
433 | mutex_lock(&data->update_lock); | |
434 | ||
40ac1994 | 435 | i2c_smbus_write_byte_data(to_i2c_client(dev), |
569ff102 HG |
436 | FSCHMD_REG_FAN_MIN[data->kind][index], v); |
437 | data->fan_min[index] = v; | |
438 | ||
439 | mutex_unlock(&data->update_lock); | |
440 | ||
441 | return count; | |
442 | } | |
443 | ||
444 | ||
445 | /* The FSC hwmon family has the ability to force an attached alert led to flash | |
446 | from software, we export this as an alert_led sysfs attr */ | |
447 | static ssize_t show_alert_led(struct device *dev, | |
448 | struct device_attribute *devattr, char *buf) | |
449 | { | |
450 | struct fschmd_data *data = fschmd_update_device(dev); | |
451 | ||
452 | if (data->global_control & FSCHMD_CONTROL_ALERT_LED_MASK) | |
453 | return sprintf(buf, "1\n"); | |
454 | else | |
455 | return sprintf(buf, "0\n"); | |
456 | } | |
457 | ||
458 | static ssize_t store_alert_led(struct device *dev, | |
459 | struct device_attribute *devattr, const char *buf, size_t count) | |
460 | { | |
461 | u8 reg; | |
462 | struct fschmd_data *data = dev_get_drvdata(dev); | |
463 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
464 | ||
465 | mutex_lock(&data->update_lock); | |
466 | ||
40ac1994 | 467 | reg = i2c_smbus_read_byte_data(to_i2c_client(dev), FSCHMD_REG_CONTROL); |
569ff102 HG |
468 | |
469 | if (v) | |
470 | reg |= FSCHMD_CONTROL_ALERT_LED_MASK; | |
471 | else | |
472 | reg &= ~FSCHMD_CONTROL_ALERT_LED_MASK; | |
473 | ||
40ac1994 | 474 | i2c_smbus_write_byte_data(to_i2c_client(dev), FSCHMD_REG_CONTROL, reg); |
569ff102 HG |
475 | |
476 | data->global_control = reg; | |
477 | ||
478 | mutex_unlock(&data->update_lock); | |
479 | ||
480 | return count; | |
481 | } | |
482 | ||
483 | static struct sensor_device_attribute fschmd_attr[] = { | |
484 | SENSOR_ATTR(in0_input, 0444, show_in_value, NULL, 0), | |
485 | SENSOR_ATTR(in1_input, 0444, show_in_value, NULL, 1), | |
486 | SENSOR_ATTR(in2_input, 0444, show_in_value, NULL, 2), | |
487 | SENSOR_ATTR(alert_led, 0644, show_alert_led, store_alert_led, 0), | |
488 | }; | |
489 | ||
490 | static struct sensor_device_attribute fschmd_temp_attr[] = { | |
491 | SENSOR_ATTR(temp1_input, 0444, show_temp_value, NULL, 0), | |
492 | SENSOR_ATTR(temp1_max, 0644, show_temp_max, store_temp_max, 0), | |
493 | SENSOR_ATTR(temp1_fault, 0444, show_temp_fault, NULL, 0), | |
494 | SENSOR_ATTR(temp1_alarm, 0444, show_temp_alarm, NULL, 0), | |
495 | SENSOR_ATTR(temp2_input, 0444, show_temp_value, NULL, 1), | |
496 | SENSOR_ATTR(temp2_max, 0644, show_temp_max, store_temp_max, 1), | |
497 | SENSOR_ATTR(temp2_fault, 0444, show_temp_fault, NULL, 1), | |
498 | SENSOR_ATTR(temp2_alarm, 0444, show_temp_alarm, NULL, 1), | |
499 | SENSOR_ATTR(temp3_input, 0444, show_temp_value, NULL, 2), | |
500 | SENSOR_ATTR(temp3_max, 0644, show_temp_max, store_temp_max, 2), | |
501 | SENSOR_ATTR(temp3_fault, 0444, show_temp_fault, NULL, 2), | |
502 | SENSOR_ATTR(temp3_alarm, 0444, show_temp_alarm, NULL, 2), | |
503 | SENSOR_ATTR(temp4_input, 0444, show_temp_value, NULL, 3), | |
504 | SENSOR_ATTR(temp4_max, 0644, show_temp_max, store_temp_max, 3), | |
505 | SENSOR_ATTR(temp4_fault, 0444, show_temp_fault, NULL, 3), | |
506 | SENSOR_ATTR(temp4_alarm, 0444, show_temp_alarm, NULL, 3), | |
507 | SENSOR_ATTR(temp5_input, 0444, show_temp_value, NULL, 4), | |
508 | SENSOR_ATTR(temp5_max, 0644, show_temp_max, store_temp_max, 4), | |
509 | SENSOR_ATTR(temp5_fault, 0444, show_temp_fault, NULL, 4), | |
510 | SENSOR_ATTR(temp5_alarm, 0444, show_temp_alarm, NULL, 4), | |
511 | }; | |
512 | ||
513 | static struct sensor_device_attribute fschmd_fan_attr[] = { | |
514 | SENSOR_ATTR(fan1_input, 0444, show_fan_value, NULL, 0), | |
515 | SENSOR_ATTR(fan1_div, 0644, show_fan_div, store_fan_div, 0), | |
516 | SENSOR_ATTR(fan1_alarm, 0444, show_fan_alarm, NULL, 0), | |
517 | SENSOR_ATTR(fan1_fault, 0444, show_fan_fault, NULL, 0), | |
518 | SENSOR_ATTR(pwm1_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
519 | store_pwm_auto_point1_pwm, 0), | |
520 | SENSOR_ATTR(fan2_input, 0444, show_fan_value, NULL, 1), | |
521 | SENSOR_ATTR(fan2_div, 0644, show_fan_div, store_fan_div, 1), | |
522 | SENSOR_ATTR(fan2_alarm, 0444, show_fan_alarm, NULL, 1), | |
523 | SENSOR_ATTR(fan2_fault, 0444, show_fan_fault, NULL, 1), | |
524 | SENSOR_ATTR(pwm2_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
525 | store_pwm_auto_point1_pwm, 1), | |
526 | SENSOR_ATTR(fan3_input, 0444, show_fan_value, NULL, 2), | |
527 | SENSOR_ATTR(fan3_div, 0644, show_fan_div, store_fan_div, 2), | |
528 | SENSOR_ATTR(fan3_alarm, 0444, show_fan_alarm, NULL, 2), | |
529 | SENSOR_ATTR(fan3_fault, 0444, show_fan_fault, NULL, 2), | |
530 | SENSOR_ATTR(pwm3_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
531 | store_pwm_auto_point1_pwm, 2), | |
532 | SENSOR_ATTR(fan4_input, 0444, show_fan_value, NULL, 3), | |
533 | SENSOR_ATTR(fan4_div, 0644, show_fan_div, store_fan_div, 3), | |
534 | SENSOR_ATTR(fan4_alarm, 0444, show_fan_alarm, NULL, 3), | |
535 | SENSOR_ATTR(fan4_fault, 0444, show_fan_fault, NULL, 3), | |
536 | SENSOR_ATTR(pwm4_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
537 | store_pwm_auto_point1_pwm, 3), | |
538 | SENSOR_ATTR(fan5_input, 0444, show_fan_value, NULL, 4), | |
539 | SENSOR_ATTR(fan5_div, 0644, show_fan_div, store_fan_div, 4), | |
540 | SENSOR_ATTR(fan5_alarm, 0444, show_fan_alarm, NULL, 4), | |
541 | SENSOR_ATTR(fan5_fault, 0444, show_fan_fault, NULL, 4), | |
542 | SENSOR_ATTR(pwm5_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
543 | store_pwm_auto_point1_pwm, 4), | |
544 | SENSOR_ATTR(fan6_input, 0444, show_fan_value, NULL, 5), | |
545 | SENSOR_ATTR(fan6_div, 0644, show_fan_div, store_fan_div, 5), | |
546 | SENSOR_ATTR(fan6_alarm, 0444, show_fan_alarm, NULL, 5), | |
547 | SENSOR_ATTR(fan6_fault, 0444, show_fan_fault, NULL, 5), | |
548 | SENSOR_ATTR(pwm6_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
549 | store_pwm_auto_point1_pwm, 5), | |
550 | }; | |
551 | ||
552 | ||
553 | /* | |
554 | * Real code | |
555 | */ | |
556 | ||
7845cd79 HG |
557 | /* DMI decode routine to read voltage scaling factors from special DMI tables, |
558 | which are available on FSC machines with an fscher or later chip. */ | |
559 | static void fschmd_dmi_decode(const struct dmi_header *header) | |
560 | { | |
561 | int i, mult[3] = { 0 }, offset[3] = { 0 }, vref = 0, found = 0; | |
562 | ||
563 | /* dmi code ugliness, we get passed the address of the contents of | |
564 | a complete DMI record, but in the form of a dmi_header pointer, in | |
565 | reality this address holds header->length bytes of which the header | |
566 | are the first 4 bytes */ | |
567 | u8 *dmi_data = (u8 *)header; | |
568 | ||
569 | /* We are looking for OEM-specific type 185 */ | |
570 | if (header->type != 185) | |
571 | return; | |
572 | ||
573 | /* we are looking for what Siemens calls "subtype" 19, the subtype | |
574 | is stored in byte 5 of the dmi block */ | |
575 | if (header->length < 5 || dmi_data[4] != 19) | |
576 | return; | |
577 | ||
578 | /* After the subtype comes 1 unknown byte and then blocks of 5 bytes, | |
579 | consisting of what Siemens calls an "Entity" number, followed by | |
580 | 2 16-bit words in LSB first order */ | |
581 | for (i = 6; (i + 4) < header->length; i += 5) { | |
582 | /* entity 1 - 3: voltage multiplier and offset */ | |
583 | if (dmi_data[i] >= 1 && dmi_data[i] <= 3) { | |
584 | /* Our in sensors order and the DMI order differ */ | |
585 | const int shuffle[3] = { 1, 0, 2 }; | |
586 | int in = shuffle[dmi_data[i] - 1]; | |
587 | ||
588 | /* Check for twice the same entity */ | |
589 | if (found & (1 << in)) | |
590 | return; | |
591 | ||
592 | mult[in] = dmi_data[i + 1] | (dmi_data[i + 2] << 8); | |
593 | offset[in] = dmi_data[i + 3] | (dmi_data[i + 4] << 8); | |
594 | ||
595 | found |= 1 << in; | |
596 | } | |
597 | ||
598 | /* entity 7: reference voltage */ | |
599 | if (dmi_data[i] == 7) { | |
600 | /* Check for twice the same entity */ | |
601 | if (found & 0x08) | |
602 | return; | |
603 | ||
604 | vref = dmi_data[i + 1] | (dmi_data[i + 2] << 8); | |
605 | ||
606 | found |= 0x08; | |
607 | } | |
608 | } | |
609 | ||
610 | if (found == 0x0F) { | |
611 | for (i = 0; i < 3; i++) { | |
612 | dmi_mult[i] = mult[i] * 10; | |
613 | dmi_offset[i] = offset[i] * 10; | |
614 | } | |
615 | dmi_vref = vref; | |
616 | } | |
617 | } | |
618 | ||
40ac1994 JD |
619 | static int fschmd_detect(struct i2c_client *client, int kind, |
620 | struct i2c_board_info *info) | |
569ff102 | 621 | { |
40ac1994 | 622 | struct i2c_adapter *adapter = client->adapter; |
569ff102 HG |
623 | const char * const client_names[5] = { "fscpos", "fscher", "fscscy", |
624 | "fschrc", "fschmd" }; | |
569ff102 HG |
625 | |
626 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
40ac1994 | 627 | return -ENODEV; |
569ff102 HG |
628 | |
629 | /* Detect & Identify the chip */ | |
630 | if (kind <= 0) { | |
631 | char id[4]; | |
632 | ||
633 | id[0] = i2c_smbus_read_byte_data(client, | |
634 | FSCHMD_REG_IDENT_0); | |
635 | id[1] = i2c_smbus_read_byte_data(client, | |
636 | FSCHMD_REG_IDENT_1); | |
637 | id[2] = i2c_smbus_read_byte_data(client, | |
638 | FSCHMD_REG_IDENT_2); | |
639 | id[3] = '\0'; | |
640 | ||
641 | if (!strcmp(id, "PEG")) | |
642 | kind = fscpos; | |
643 | else if (!strcmp(id, "HER")) | |
644 | kind = fscher; | |
645 | else if (!strcmp(id, "SCY")) | |
646 | kind = fscscy; | |
647 | else if (!strcmp(id, "HRC")) | |
648 | kind = fschrc; | |
649 | else if (!strcmp(id, "HMD")) | |
650 | kind = fschmd; | |
651 | else | |
40ac1994 | 652 | return -ENODEV; |
569ff102 HG |
653 | } |
654 | ||
40ac1994 JD |
655 | strlcpy(info->type, client_names[kind - 1], I2C_NAME_SIZE); |
656 | ||
657 | return 0; | |
658 | } | |
659 | ||
660 | static int fschmd_probe(struct i2c_client *client, | |
661 | const struct i2c_device_id *id) | |
662 | { | |
663 | struct fschmd_data *data; | |
664 | u8 revision; | |
665 | const char * const names[5] = { "Poseidon", "Hermes", "Scylla", | |
666 | "Heracles", "Heimdall" }; | |
667 | int i, err; | |
668 | enum chips kind = id->driver_data; | |
669 | ||
670 | data = kzalloc(sizeof(struct fschmd_data), GFP_KERNEL); | |
671 | if (!data) | |
672 | return -ENOMEM; | |
673 | ||
674 | i2c_set_clientdata(client, data); | |
675 | mutex_init(&data->update_lock); | |
676 | ||
569ff102 HG |
677 | if (kind == fscpos) { |
678 | /* The Poseidon has hardwired temp limits, fill these | |
679 | in for the alarm resetting code */ | |
680 | data->temp_max[0] = 70 + 128; | |
681 | data->temp_max[1] = 50 + 128; | |
682 | data->temp_max[2] = 50 + 128; | |
683 | } | |
684 | ||
7845cd79 HG |
685 | /* Read the special DMI table for fscher and newer chips */ |
686 | if (kind == fscher || kind >= fschrc) { | |
687 | dmi_walk(fschmd_dmi_decode); | |
688 | if (dmi_vref == -1) { | |
689 | printk(KERN_WARNING FSCHMD_NAME | |
690 | ": Couldn't get voltage scaling factors from " | |
691 | "BIOS DMI table, using builtin defaults\n"); | |
692 | dmi_vref = 33; | |
693 | } | |
694 | } | |
695 | ||
569ff102 HG |
696 | /* i2c kind goes from 1-5, we want from 0-4 to address arrays */ |
697 | data->kind = kind - 1; | |
569ff102 HG |
698 | |
699 | for (i = 0; i < ARRAY_SIZE(fschmd_attr); i++) { | |
700 | err = device_create_file(&client->dev, | |
701 | &fschmd_attr[i].dev_attr); | |
702 | if (err) | |
703 | goto exit_detach; | |
704 | } | |
705 | ||
706 | for (i = 0; i < (FSCHMD_NO_TEMP_SENSORS[data->kind] * 4); i++) { | |
707 | /* Poseidon doesn't have TEMP_LIMIT registers */ | |
708 | if (kind == fscpos && fschmd_temp_attr[i].dev_attr.show == | |
709 | show_temp_max) | |
710 | continue; | |
711 | ||
712 | err = device_create_file(&client->dev, | |
713 | &fschmd_temp_attr[i].dev_attr); | |
714 | if (err) | |
715 | goto exit_detach; | |
716 | } | |
717 | ||
718 | for (i = 0; i < (FSCHMD_NO_FAN_SENSORS[data->kind] * 5); i++) { | |
719 | /* Poseidon doesn't have a FAN_MIN register for its 3rd fan */ | |
720 | if (kind == fscpos && | |
721 | !strcmp(fschmd_fan_attr[i].dev_attr.attr.name, | |
722 | "pwm3_auto_point1_pwm")) | |
723 | continue; | |
724 | ||
725 | err = device_create_file(&client->dev, | |
726 | &fschmd_fan_attr[i].dev_attr); | |
727 | if (err) | |
728 | goto exit_detach; | |
729 | } | |
730 | ||
731 | data->hwmon_dev = hwmon_device_register(&client->dev); | |
732 | if (IS_ERR(data->hwmon_dev)) { | |
733 | err = PTR_ERR(data->hwmon_dev); | |
734 | data->hwmon_dev = NULL; | |
735 | goto exit_detach; | |
736 | } | |
737 | ||
738 | revision = i2c_smbus_read_byte_data(client, FSCHMD_REG_REVISION); | |
739 | printk(KERN_INFO FSCHMD_NAME ": Detected FSC %s chip, revision: %d\n", | |
740 | names[data->kind], (int) revision); | |
741 | ||
742 | return 0; | |
743 | ||
744 | exit_detach: | |
40ac1994 | 745 | fschmd_remove(client); /* will also free data for us */ |
569ff102 HG |
746 | return err; |
747 | } | |
748 | ||
40ac1994 | 749 | static int fschmd_remove(struct i2c_client *client) |
569ff102 HG |
750 | { |
751 | struct fschmd_data *data = i2c_get_clientdata(client); | |
40ac1994 | 752 | int i; |
569ff102 HG |
753 | |
754 | /* Check if registered in case we're called from fschmd_detect | |
755 | to cleanup after an error */ | |
756 | if (data->hwmon_dev) | |
757 | hwmon_device_unregister(data->hwmon_dev); | |
758 | ||
759 | for (i = 0; i < ARRAY_SIZE(fschmd_attr); i++) | |
760 | device_remove_file(&client->dev, &fschmd_attr[i].dev_attr); | |
761 | for (i = 0; i < (FSCHMD_NO_TEMP_SENSORS[data->kind] * 4); i++) | |
762 | device_remove_file(&client->dev, | |
763 | &fschmd_temp_attr[i].dev_attr); | |
764 | for (i = 0; i < (FSCHMD_NO_FAN_SENSORS[data->kind] * 5); i++) | |
765 | device_remove_file(&client->dev, | |
766 | &fschmd_fan_attr[i].dev_attr); | |
767 | ||
569ff102 HG |
768 | kfree(data); |
769 | return 0; | |
770 | } | |
771 | ||
772 | static struct fschmd_data *fschmd_update_device(struct device *dev) | |
773 | { | |
774 | struct i2c_client *client = to_i2c_client(dev); | |
775 | struct fschmd_data *data = i2c_get_clientdata(client); | |
776 | int i; | |
777 | ||
778 | mutex_lock(&data->update_lock); | |
779 | ||
780 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { | |
781 | ||
782 | for (i = 0; i < FSCHMD_NO_TEMP_SENSORS[data->kind]; i++) { | |
783 | data->temp_act[i] = i2c_smbus_read_byte_data(client, | |
784 | FSCHMD_REG_TEMP_ACT[data->kind][i]); | |
785 | data->temp_status[i] = i2c_smbus_read_byte_data(client, | |
786 | FSCHMD_REG_TEMP_STATE[data->kind][i]); | |
787 | ||
788 | /* The fscpos doesn't have TEMP_LIMIT registers */ | |
789 | if (FSCHMD_REG_TEMP_LIMIT[data->kind][i]) | |
790 | data->temp_max[i] = i2c_smbus_read_byte_data( | |
791 | client, | |
792 | FSCHMD_REG_TEMP_LIMIT[data->kind][i]); | |
793 | ||
794 | /* reset alarm if the alarm condition is gone, | |
795 | the chip doesn't do this itself */ | |
796 | if ((data->temp_status[i] & FSCHMD_TEMP_ALARM_MASK) == | |
797 | FSCHMD_TEMP_ALARM_MASK && | |
798 | data->temp_act[i] < data->temp_max[i]) | |
799 | i2c_smbus_write_byte_data(client, | |
800 | FSCHMD_REG_TEMP_STATE[data->kind][i], | |
801 | FSCHMD_TEMP_ALERT_MASK); | |
802 | } | |
803 | ||
804 | for (i = 0; i < FSCHMD_NO_FAN_SENSORS[data->kind]; i++) { | |
805 | data->fan_act[i] = i2c_smbus_read_byte_data(client, | |
806 | FSCHMD_REG_FAN_ACT[data->kind][i]); | |
807 | data->fan_status[i] = i2c_smbus_read_byte_data(client, | |
808 | FSCHMD_REG_FAN_STATE[data->kind][i]); | |
809 | data->fan_ripple[i] = i2c_smbus_read_byte_data(client, | |
810 | FSCHMD_REG_FAN_RIPPLE[data->kind][i]); | |
811 | ||
812 | /* The fscpos third fan doesn't have a fan_min */ | |
813 | if (FSCHMD_REG_FAN_MIN[data->kind][i]) | |
814 | data->fan_min[i] = i2c_smbus_read_byte_data( | |
815 | client, | |
816 | FSCHMD_REG_FAN_MIN[data->kind][i]); | |
817 | ||
818 | /* reset fan status if speed is back to > 0 */ | |
819 | if ((data->fan_status[i] & FSCHMD_FAN_ALARM_MASK) && | |
820 | data->fan_act[i]) | |
821 | i2c_smbus_write_byte_data(client, | |
822 | FSCHMD_REG_FAN_STATE[data->kind][i], | |
823 | FSCHMD_FAN_ALARM_MASK); | |
824 | } | |
825 | ||
826 | for (i = 0; i < 3; i++) | |
827 | data->volt[i] = i2c_smbus_read_byte_data(client, | |
828 | FSCHMD_REG_VOLT[i]); | |
829 | ||
830 | data->global_control = i2c_smbus_read_byte_data(client, | |
831 | FSCHMD_REG_CONTROL); | |
832 | ||
833 | /* To be implemented in the future | |
834 | data->watchdog[0] = i2c_smbus_read_byte_data(client, | |
835 | FSCHMD_REG_WDOG_PRESET); | |
836 | data->watchdog[1] = i2c_smbus_read_byte_data(client, | |
837 | FSCHMD_REG_WDOG_STATE); | |
838 | data->watchdog[2] = i2c_smbus_read_byte_data(client, | |
839 | FSCHMD_REG_WDOG_CONTROL); */ | |
840 | ||
841 | data->last_updated = jiffies; | |
842 | data->valid = 1; | |
843 | } | |
844 | ||
845 | mutex_unlock(&data->update_lock); | |
846 | ||
847 | return data; | |
848 | } | |
849 | ||
850 | static int __init fschmd_init(void) | |
851 | { | |
852 | return i2c_add_driver(&fschmd_driver); | |
853 | } | |
854 | ||
855 | static void __exit fschmd_exit(void) | |
856 | { | |
857 | i2c_del_driver(&fschmd_driver); | |
858 | } | |
859 | ||
860 | MODULE_AUTHOR("Hans de Goede <j.w.r.degoede@hhs.nl>"); | |
861 | MODULE_DESCRIPTION("FSC Poseidon, Hermes, Scylla, Heracles and " | |
862 | "Heimdall driver"); | |
863 | MODULE_LICENSE("GPL"); | |
864 | ||
865 | module_init(fschmd_init); | |
866 | module_exit(fschmd_exit); |