diff options
Diffstat (limited to 'drivers/hwmon/fscpos.c')
-rw-r--r-- | drivers/hwmon/fscpos.c | 654 |
1 files changed, 0 insertions, 654 deletions
diff --git a/drivers/hwmon/fscpos.c b/drivers/hwmon/fscpos.c deleted file mode 100644 index 8a7bcf500b4e..000000000000 --- a/drivers/hwmon/fscpos.c +++ /dev/null | |||
@@ -1,654 +0,0 @@ | |||
1 | /* | ||
2 | fscpos.c - Kernel module for hardware monitoring with FSC Poseidon chips | ||
3 | Copyright (C) 2004, 2005 Stefan Ott <stefan@desire.ch> | ||
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 | fujitsu siemens poseidon chip, | ||
22 | module based on the old fscpos module by Hermann Jung <hej@odn.de> and | ||
23 | the fscher module by Reinhard Nissl <rnissl@gmx.de> | ||
24 | |||
25 | original module based on lm80.c | ||
26 | Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> | ||
27 | and Philip Edelbrock <phil@netroedge.com> | ||
28 | |||
29 | Thanks to Jean Delvare for reviewing my code and suggesting a lot of | ||
30 | improvements. | ||
31 | */ | ||
32 | |||
33 | #include <linux/module.h> | ||
34 | #include <linux/slab.h> | ||
35 | #include <linux/jiffies.h> | ||
36 | #include <linux/i2c.h> | ||
37 | #include <linux/init.h> | ||
38 | #include <linux/hwmon.h> | ||
39 | #include <linux/err.h> | ||
40 | #include <linux/mutex.h> | ||
41 | #include <linux/sysfs.h> | ||
42 | |||
43 | /* | ||
44 | * Addresses to scan | ||
45 | */ | ||
46 | static const unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; | ||
47 | |||
48 | /* | ||
49 | * Insmod parameters | ||
50 | */ | ||
51 | I2C_CLIENT_INSMOD_1(fscpos); | ||
52 | |||
53 | /* | ||
54 | * The FSCPOS registers | ||
55 | */ | ||
56 | |||
57 | /* chip identification */ | ||
58 | #define FSCPOS_REG_IDENT_0 0x00 | ||
59 | #define FSCPOS_REG_IDENT_1 0x01 | ||
60 | #define FSCPOS_REG_IDENT_2 0x02 | ||
61 | #define FSCPOS_REG_REVISION 0x03 | ||
62 | |||
63 | /* global control and status */ | ||
64 | #define FSCPOS_REG_EVENT_STATE 0x04 | ||
65 | #define FSCPOS_REG_CONTROL 0x05 | ||
66 | |||
67 | /* watchdog */ | ||
68 | #define FSCPOS_REG_WDOG_PRESET 0x28 | ||
69 | #define FSCPOS_REG_WDOG_STATE 0x23 | ||
70 | #define FSCPOS_REG_WDOG_CONTROL 0x21 | ||
71 | |||
72 | /* voltages */ | ||
73 | #define FSCPOS_REG_VOLT_12 0x45 | ||
74 | #define FSCPOS_REG_VOLT_5 0x42 | ||
75 | #define FSCPOS_REG_VOLT_BATT 0x48 | ||
76 | |||
77 | /* fans - the chip does not support minimum speed for fan2 */ | ||
78 | static u8 FSCPOS_REG_PWM[] = { 0x55, 0x65 }; | ||
79 | static u8 FSCPOS_REG_FAN_ACT[] = { 0x0e, 0x6b, 0xab }; | ||
80 | static u8 FSCPOS_REG_FAN_STATE[] = { 0x0d, 0x62, 0xa2 }; | ||
81 | static u8 FSCPOS_REG_FAN_RIPPLE[] = { 0x0f, 0x6f, 0xaf }; | ||
82 | |||
83 | /* temperatures */ | ||
84 | static u8 FSCPOS_REG_TEMP_ACT[] = { 0x64, 0x32, 0x35 }; | ||
85 | static u8 FSCPOS_REG_TEMP_STATE[] = { 0x71, 0x81, 0x91 }; | ||
86 | |||
87 | /* | ||
88 | * Functions declaration | ||
89 | */ | ||
90 | static int fscpos_probe(struct i2c_client *client, | ||
91 | const struct i2c_device_id *id); | ||
92 | static int fscpos_detect(struct i2c_client *client, int kind, | ||
93 | struct i2c_board_info *info); | ||
94 | static int fscpos_remove(struct i2c_client *client); | ||
95 | |||
96 | static int fscpos_read_value(struct i2c_client *client, u8 reg); | ||
97 | static int fscpos_write_value(struct i2c_client *client, u8 reg, u8 value); | ||
98 | static struct fscpos_data *fscpos_update_device(struct device *dev); | ||
99 | static void fscpos_init_client(struct i2c_client *client); | ||
100 | |||
101 | static void reset_fan_alarm(struct i2c_client *client, int nr); | ||
102 | |||
103 | /* | ||
104 | * Driver data (common to all clients) | ||
105 | */ | ||
106 | static const struct i2c_device_id fscpos_id[] = { | ||
107 | { "fscpos", fscpos }, | ||
108 | { } | ||
109 | }; | ||
110 | |||
111 | static struct i2c_driver fscpos_driver = { | ||
112 | .class = I2C_CLASS_HWMON, | ||
113 | .driver = { | ||
114 | .name = "fscpos", | ||
115 | }, | ||
116 | .probe = fscpos_probe, | ||
117 | .remove = fscpos_remove, | ||
118 | .id_table = fscpos_id, | ||
119 | .detect = fscpos_detect, | ||
120 | .address_data = &addr_data, | ||
121 | }; | ||
122 | |||
123 | /* | ||
124 | * Client data (each client gets its own) | ||
125 | */ | ||
126 | struct fscpos_data { | ||
127 | struct device *hwmon_dev; | ||
128 | struct mutex update_lock; | ||
129 | char valid; /* 0 until following fields are valid */ | ||
130 | unsigned long last_updated; /* In jiffies */ | ||
131 | |||
132 | /* register values */ | ||
133 | u8 revision; /* revision of chip */ | ||
134 | u8 global_event; /* global event status */ | ||
135 | u8 global_control; /* global control register */ | ||
136 | u8 wdog_control; /* watchdog control */ | ||
137 | u8 wdog_state; /* watchdog status */ | ||
138 | u8 wdog_preset; /* watchdog preset */ | ||
139 | u8 volt[3]; /* 12, 5, battery current */ | ||
140 | u8 temp_act[3]; /* temperature */ | ||
141 | u8 temp_status[3]; /* status of sensor */ | ||
142 | u8 fan_act[3]; /* fans revolutions per second */ | ||
143 | u8 fan_status[3]; /* fan status */ | ||
144 | u8 pwm[2]; /* fan min value for rps */ | ||
145 | u8 fan_ripple[3]; /* divider for rps */ | ||
146 | }; | ||
147 | |||
148 | /* Temperature */ | ||
149 | #define TEMP_FROM_REG(val) (((val) - 128) * 1000) | ||
150 | |||
151 | static ssize_t show_temp_input(struct fscpos_data *data, char *buf, int nr) | ||
152 | { | ||
153 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[nr - 1])); | ||
154 | } | ||
155 | |||
156 | static ssize_t show_temp_status(struct fscpos_data *data, char *buf, int nr) | ||
157 | { | ||
158 | /* bits 2..7 reserved => mask with 0x03 */ | ||
159 | return sprintf(buf, "%u\n", data->temp_status[nr - 1] & 0x03); | ||
160 | } | ||
161 | |||
162 | static ssize_t show_temp_reset(struct fscpos_data *data, char *buf, int nr) | ||
163 | { | ||
164 | return sprintf(buf, "1\n"); | ||
165 | } | ||
166 | |||
167 | static ssize_t set_temp_reset(struct i2c_client *client, struct fscpos_data | ||
168 | *data, const char *buf, size_t count, int nr, int reg) | ||
169 | { | ||
170 | unsigned long v = simple_strtoul(buf, NULL, 10); | ||
171 | if (v != 1) { | ||
172 | dev_err(&client->dev, "temp_reset value %ld not supported. " | ||
173 | "Use 1 to reset the alarm!\n", v); | ||
174 | return -EINVAL; | ||
175 | } | ||
176 | |||
177 | dev_info(&client->dev, "You used the temp_reset feature which has not " | ||
178 | "been proplerly tested. Please report your " | ||
179 | "experience to the module author.\n"); | ||
180 | |||
181 | /* Supported value: 2 (clears the status) */ | ||
182 | fscpos_write_value(client, FSCPOS_REG_TEMP_STATE[nr - 1], 2); | ||
183 | return count; | ||
184 | } | ||
185 | |||
186 | /* Fans */ | ||
187 | #define RPM_FROM_REG(val) ((val) * 60) | ||
188 | |||
189 | static ssize_t show_fan_status(struct fscpos_data *data, char *buf, int nr) | ||
190 | { | ||
191 | /* bits 0..1, 3..7 reserved => mask with 0x04 */ | ||
192 | return sprintf(buf, "%u\n", data->fan_status[nr - 1] & 0x04); | ||
193 | } | ||
194 | |||
195 | static ssize_t show_fan_input(struct fscpos_data *data, char *buf, int nr) | ||
196 | { | ||
197 | return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[nr - 1])); | ||
198 | } | ||
199 | |||
200 | static ssize_t show_fan_ripple(struct fscpos_data *data, char *buf, int nr) | ||
201 | { | ||
202 | /* bits 2..7 reserved => mask with 0x03 */ | ||
203 | return sprintf(buf, "%u\n", data->fan_ripple[nr - 1] & 0x03); | ||
204 | } | ||
205 | |||
206 | static ssize_t set_fan_ripple(struct i2c_client *client, struct fscpos_data | ||
207 | *data, const char *buf, size_t count, int nr, int reg) | ||
208 | { | ||
209 | /* supported values: 2, 4, 8 */ | ||
210 | unsigned long v = simple_strtoul(buf, NULL, 10); | ||
211 | |||
212 | switch (v) { | ||
213 | case 2: v = 1; break; | ||
214 | case 4: v = 2; break; | ||
215 | case 8: v = 3; break; | ||
216 | default: | ||
217 | dev_err(&client->dev, "fan_ripple value %ld not supported. " | ||
218 | "Must be one of 2, 4 or 8!\n", v); | ||
219 | return -EINVAL; | ||
220 | } | ||
221 | |||
222 | mutex_lock(&data->update_lock); | ||
223 | /* bits 2..7 reserved => mask with 0x03 */ | ||
224 | data->fan_ripple[nr - 1] &= ~0x03; | ||
225 | data->fan_ripple[nr - 1] |= v; | ||
226 | |||
227 | fscpos_write_value(client, reg, data->fan_ripple[nr - 1]); | ||
228 | mutex_unlock(&data->update_lock); | ||
229 | return count; | ||
230 | } | ||
231 | |||
232 | static ssize_t show_pwm(struct fscpos_data *data, char *buf, int nr) | ||
233 | { | ||
234 | return sprintf(buf, "%u\n", data->pwm[nr - 1]); | ||
235 | } | ||
236 | |||
237 | static ssize_t set_pwm(struct i2c_client *client, struct fscpos_data *data, | ||
238 | const char *buf, size_t count, int nr, int reg) | ||
239 | { | ||
240 | unsigned long v = simple_strtoul(buf, NULL, 10); | ||
241 | |||
242 | /* Range: 0..255 */ | ||
243 | if (v < 0) v = 0; | ||
244 | if (v > 255) v = 255; | ||
245 | |||
246 | mutex_lock(&data->update_lock); | ||
247 | data->pwm[nr - 1] = v; | ||
248 | fscpos_write_value(client, reg, data->pwm[nr - 1]); | ||
249 | mutex_unlock(&data->update_lock); | ||
250 | return count; | ||
251 | } | ||
252 | |||
253 | static void reset_fan_alarm(struct i2c_client *client, int nr) | ||
254 | { | ||
255 | fscpos_write_value(client, FSCPOS_REG_FAN_STATE[nr], 4); | ||
256 | } | ||
257 | |||
258 | /* Volts */ | ||
259 | #define VOLT_FROM_REG(val, mult) ((val) * (mult) / 255) | ||
260 | |||
261 | static ssize_t show_volt_12(struct device *dev, struct device_attribute *attr, char *buf) | ||
262 | { | ||
263 | struct fscpos_data *data = fscpos_update_device(dev); | ||
264 | return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[0], 14200)); | ||
265 | } | ||
266 | |||
267 | static ssize_t show_volt_5(struct device *dev, struct device_attribute *attr, char *buf) | ||
268 | { | ||
269 | struct fscpos_data *data = fscpos_update_device(dev); | ||
270 | return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[1], 6600)); | ||
271 | } | ||
272 | |||
273 | static ssize_t show_volt_batt(struct device *dev, struct device_attribute *attr, char *buf) | ||
274 | { | ||
275 | struct fscpos_data *data = fscpos_update_device(dev); | ||
276 | return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[2], 3300)); | ||
277 | } | ||
278 | |||
279 | /* Watchdog */ | ||
280 | static ssize_t show_wdog_control(struct fscpos_data *data, char *buf) | ||
281 | { | ||
282 | /* bits 0..3 reserved, bit 6 write only => mask with 0xb0 */ | ||
283 | return sprintf(buf, "%u\n", data->wdog_control & 0xb0); | ||
284 | } | ||
285 | |||
286 | static ssize_t set_wdog_control(struct i2c_client *client, struct fscpos_data | ||
287 | *data, const char *buf, size_t count, int reg) | ||
288 | { | ||
289 | /* bits 0..3 reserved => mask with 0xf0 */ | ||
290 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0; | ||
291 | |||
292 | mutex_lock(&data->update_lock); | ||
293 | data->wdog_control &= ~0xf0; | ||
294 | data->wdog_control |= v; | ||
295 | fscpos_write_value(client, reg, data->wdog_control); | ||
296 | mutex_unlock(&data->update_lock); | ||
297 | return count; | ||
298 | } | ||
299 | |||
300 | static ssize_t show_wdog_state(struct fscpos_data *data, char *buf) | ||
301 | { | ||
302 | /* bits 0, 2..7 reserved => mask with 0x02 */ | ||
303 | return sprintf(buf, "%u\n", data->wdog_state & 0x02); | ||
304 | } | ||
305 | |||
306 | static ssize_t set_wdog_state(struct i2c_client *client, struct fscpos_data | ||
307 | *data, const char *buf, size_t count, int reg) | ||
308 | { | ||
309 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02; | ||
310 | |||
311 | /* Valid values: 2 (clear) */ | ||
312 | if (v != 2) { | ||
313 | dev_err(&client->dev, "wdog_state value %ld not supported. " | ||
314 | "Must be 2 to clear the state!\n", v); | ||
315 | return -EINVAL; | ||
316 | } | ||
317 | |||
318 | mutex_lock(&data->update_lock); | ||
319 | data->wdog_state &= ~v; | ||
320 | fscpos_write_value(client, reg, v); | ||
321 | mutex_unlock(&data->update_lock); | ||
322 | return count; | ||
323 | } | ||
324 | |||
325 | static ssize_t show_wdog_preset(struct fscpos_data *data, char *buf) | ||
326 | { | ||
327 | return sprintf(buf, "%u\n", data->wdog_preset); | ||
328 | } | ||
329 | |||
330 | static ssize_t set_wdog_preset(struct i2c_client *client, struct fscpos_data | ||
331 | *data, const char *buf, size_t count, int reg) | ||
332 | { | ||
333 | unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff; | ||
334 | |||
335 | mutex_lock(&data->update_lock); | ||
336 | data->wdog_preset = v; | ||
337 | fscpos_write_value(client, reg, data->wdog_preset); | ||
338 | mutex_unlock(&data->update_lock); | ||
339 | return count; | ||
340 | } | ||
341 | |||
342 | /* Event */ | ||
343 | static ssize_t show_event(struct device *dev, struct device_attribute *attr, char *buf) | ||
344 | { | ||
345 | /* bits 5..7 reserved => mask with 0x1f */ | ||
346 | struct fscpos_data *data = fscpos_update_device(dev); | ||
347 | return sprintf(buf, "%u\n", data->global_event & 0x9b); | ||
348 | } | ||
349 | |||
350 | /* | ||
351 | * Sysfs stuff | ||
352 | */ | ||
353 | #define create_getter(kind, sub) \ | ||
354 | static ssize_t sysfs_show_##kind##sub(struct device *dev, struct device_attribute *attr, char *buf) \ | ||
355 | { \ | ||
356 | struct fscpos_data *data = fscpos_update_device(dev); \ | ||
357 | return show_##kind##sub(data, buf); \ | ||
358 | } | ||
359 | |||
360 | #define create_getter_n(kind, offset, sub) \ | ||
361 | static ssize_t sysfs_show_##kind##offset##sub(struct device *dev, struct device_attribute *attr, char\ | ||
362 | *buf) \ | ||
363 | { \ | ||
364 | struct fscpos_data *data = fscpos_update_device(dev); \ | ||
365 | return show_##kind##sub(data, buf, offset); \ | ||
366 | } | ||
367 | |||
368 | #define create_setter(kind, sub, reg) \ | ||
369 | static ssize_t sysfs_set_##kind##sub (struct device *dev, struct device_attribute *attr, const char \ | ||
370 | *buf, size_t count) \ | ||
371 | { \ | ||
372 | struct i2c_client *client = to_i2c_client(dev); \ | ||
373 | struct fscpos_data *data = i2c_get_clientdata(client); \ | ||
374 | return set_##kind##sub(client, data, buf, count, reg); \ | ||
375 | } | ||
376 | |||
377 | #define create_setter_n(kind, offset, sub, reg) \ | ||
378 | static ssize_t sysfs_set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, \ | ||
379 | const char *buf, size_t count) \ | ||
380 | { \ | ||
381 | struct i2c_client *client = to_i2c_client(dev); \ | ||
382 | struct fscpos_data *data = i2c_get_clientdata(client); \ | ||
383 | return set_##kind##sub(client, data, buf, count, offset, reg);\ | ||
384 | } | ||
385 | |||
386 | #define create_sysfs_device_ro(kind, sub, offset) \ | ||
387 | static DEVICE_ATTR(kind##offset##sub, S_IRUGO, \ | ||
388 | sysfs_show_##kind##offset##sub, NULL); | ||
389 | |||
390 | #define create_sysfs_device_rw(kind, sub, offset) \ | ||
391 | static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, \ | ||
392 | sysfs_show_##kind##offset##sub, sysfs_set_##kind##offset##sub); | ||
393 | |||
394 | #define sysfs_ro_n(kind, sub, offset) \ | ||
395 | create_getter_n(kind, offset, sub); \ | ||
396 | create_sysfs_device_ro(kind, sub, offset); | ||
397 | |||
398 | #define sysfs_rw_n(kind, sub, offset, reg) \ | ||
399 | create_getter_n(kind, offset, sub); \ | ||
400 | create_setter_n(kind, offset, sub, reg); \ | ||
401 | create_sysfs_device_rw(kind, sub, offset); | ||
402 | |||
403 | #define sysfs_rw(kind, sub, reg) \ | ||
404 | create_getter(kind, sub); \ | ||
405 | create_setter(kind, sub, reg); \ | ||
406 | create_sysfs_device_rw(kind, sub,); | ||
407 | |||
408 | #define sysfs_fan_with_min(offset, reg_status, reg_ripple, reg_min) \ | ||
409 | sysfs_fan(offset, reg_status, reg_ripple); \ | ||
410 | sysfs_rw_n(pwm,, offset, reg_min); | ||
411 | |||
412 | #define sysfs_fan(offset, reg_status, reg_ripple) \ | ||
413 | sysfs_ro_n(fan, _input, offset); \ | ||
414 | sysfs_ro_n(fan, _status, offset); \ | ||
415 | sysfs_rw_n(fan, _ripple, offset, reg_ripple); | ||
416 | |||
417 | #define sysfs_temp(offset, reg_status) \ | ||
418 | sysfs_ro_n(temp, _input, offset); \ | ||
419 | sysfs_ro_n(temp, _status, offset); \ | ||
420 | sysfs_rw_n(temp, _reset, offset, reg_status); | ||
421 | |||
422 | #define sysfs_watchdog(reg_wdog_preset, reg_wdog_state, reg_wdog_control) \ | ||
423 | sysfs_rw(wdog, _control, reg_wdog_control); \ | ||
424 | sysfs_rw(wdog, _preset, reg_wdog_preset); \ | ||
425 | sysfs_rw(wdog, _state, reg_wdog_state); | ||
426 | |||
427 | sysfs_fan_with_min(1, FSCPOS_REG_FAN_STATE[0], FSCPOS_REG_FAN_RIPPLE[0], | ||
428 | FSCPOS_REG_PWM[0]); | ||
429 | sysfs_fan_with_min(2, FSCPOS_REG_FAN_STATE[1], FSCPOS_REG_FAN_RIPPLE[1], | ||
430 | FSCPOS_REG_PWM[1]); | ||
431 | sysfs_fan(3, FSCPOS_REG_FAN_STATE[2], FSCPOS_REG_FAN_RIPPLE[2]); | ||
432 | |||
433 | sysfs_temp(1, FSCPOS_REG_TEMP_STATE[0]); | ||
434 | sysfs_temp(2, FSCPOS_REG_TEMP_STATE[1]); | ||
435 | sysfs_temp(3, FSCPOS_REG_TEMP_STATE[2]); | ||
436 | |||
437 | sysfs_watchdog(FSCPOS_REG_WDOG_PRESET, FSCPOS_REG_WDOG_STATE, | ||
438 | FSCPOS_REG_WDOG_CONTROL); | ||
439 | |||
440 | static DEVICE_ATTR(event, S_IRUGO, show_event, NULL); | ||
441 | static DEVICE_ATTR(in0_input, S_IRUGO, show_volt_12, NULL); | ||
442 | static DEVICE_ATTR(in1_input, S_IRUGO, show_volt_5, NULL); | ||
443 | static DEVICE_ATTR(in2_input, S_IRUGO, show_volt_batt, NULL); | ||
444 | |||
445 | static struct attribute *fscpos_attributes[] = { | ||
446 | &dev_attr_event.attr, | ||
447 | &dev_attr_in0_input.attr, | ||
448 | &dev_attr_in1_input.attr, | ||
449 | &dev_attr_in2_input.attr, | ||
450 | |||
451 | &dev_attr_wdog_control.attr, | ||
452 | &dev_attr_wdog_preset.attr, | ||
453 | &dev_attr_wdog_state.attr, | ||
454 | |||
455 | &dev_attr_temp1_input.attr, | ||
456 | &dev_attr_temp1_status.attr, | ||
457 | &dev_attr_temp1_reset.attr, | ||
458 | &dev_attr_temp2_input.attr, | ||
459 | &dev_attr_temp2_status.attr, | ||
460 | &dev_attr_temp2_reset.attr, | ||
461 | &dev_attr_temp3_input.attr, | ||
462 | &dev_attr_temp3_status.attr, | ||
463 | &dev_attr_temp3_reset.attr, | ||
464 | |||
465 | &dev_attr_fan1_input.attr, | ||
466 | &dev_attr_fan1_status.attr, | ||
467 | &dev_attr_fan1_ripple.attr, | ||
468 | &dev_attr_pwm1.attr, | ||
469 | &dev_attr_fan2_input.attr, | ||
470 | &dev_attr_fan2_status.attr, | ||
471 | &dev_attr_fan2_ripple.attr, | ||
472 | &dev_attr_pwm2.attr, | ||
473 | &dev_attr_fan3_input.attr, | ||
474 | &dev_attr_fan3_status.attr, | ||
475 | &dev_attr_fan3_ripple.attr, | ||
476 | NULL | ||
477 | }; | ||
478 | |||
479 | static const struct attribute_group fscpos_group = { | ||
480 | .attrs = fscpos_attributes, | ||
481 | }; | ||
482 | |||
483 | /* Return 0 if detection is successful, -ENODEV otherwise */ | ||
484 | static int fscpos_detect(struct i2c_client *new_client, int kind, | ||
485 | struct i2c_board_info *info) | ||
486 | { | ||
487 | struct i2c_adapter *adapter = new_client->adapter; | ||
488 | |||
489 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | ||
490 | return -ENODEV; | ||
491 | |||
492 | /* Do the remaining detection unless force or force_fscpos parameter */ | ||
493 | if (kind < 0) { | ||
494 | if ((fscpos_read_value(new_client, FSCPOS_REG_IDENT_0) | ||
495 | != 0x50) /* 'P' */ | ||
496 | || (fscpos_read_value(new_client, FSCPOS_REG_IDENT_1) | ||
497 | != 0x45) /* 'E' */ | ||
498 | || (fscpos_read_value(new_client, FSCPOS_REG_IDENT_2) | ||
499 | != 0x47))/* 'G' */ | ||
500 | return -ENODEV; | ||
501 | } | ||
502 | |||
503 | strlcpy(info->type, "fscpos", I2C_NAME_SIZE); | ||
504 | |||
505 | return 0; | ||
506 | } | ||
507 | |||
508 | static int fscpos_probe(struct i2c_client *new_client, | ||
509 | const struct i2c_device_id *id) | ||
510 | { | ||
511 | struct fscpos_data *data; | ||
512 | int err; | ||
513 | |||
514 | data = kzalloc(sizeof(struct fscpos_data), GFP_KERNEL); | ||
515 | if (!data) { | ||
516 | err = -ENOMEM; | ||
517 | goto exit; | ||
518 | } | ||
519 | |||
520 | i2c_set_clientdata(new_client, data); | ||
521 | data->valid = 0; | ||
522 | mutex_init(&data->update_lock); | ||
523 | |||
524 | /* Inizialize the fscpos chip */ | ||
525 | fscpos_init_client(new_client); | ||
526 | |||
527 | /* Announce that the chip was found */ | ||
528 | dev_info(&new_client->dev, "Found fscpos chip, rev %u\n", data->revision); | ||
529 | |||
530 | /* Register sysfs hooks */ | ||
531 | if ((err = sysfs_create_group(&new_client->dev.kobj, &fscpos_group))) | ||
532 | goto exit_free; | ||
533 | |||
534 | data->hwmon_dev = hwmon_device_register(&new_client->dev); | ||
535 | if (IS_ERR(data->hwmon_dev)) { | ||
536 | err = PTR_ERR(data->hwmon_dev); | ||
537 | goto exit_remove_files; | ||
538 | } | ||
539 | |||
540 | return 0; | ||
541 | |||
542 | exit_remove_files: | ||
543 | sysfs_remove_group(&new_client->dev.kobj, &fscpos_group); | ||
544 | exit_free: | ||
545 | kfree(data); | ||
546 | exit: | ||
547 | return err; | ||
548 | } | ||
549 | |||
550 | static int fscpos_remove(struct i2c_client *client) | ||
551 | { | ||
552 | struct fscpos_data *data = i2c_get_clientdata(client); | ||
553 | |||
554 | hwmon_device_unregister(data->hwmon_dev); | ||
555 | sysfs_remove_group(&client->dev.kobj, &fscpos_group); | ||
556 | |||
557 | kfree(data); | ||
558 | return 0; | ||
559 | } | ||
560 | |||
561 | static int fscpos_read_value(struct i2c_client *client, u8 reg) | ||
562 | { | ||
563 | dev_dbg(&client->dev, "Read reg 0x%02x\n", reg); | ||
564 | return i2c_smbus_read_byte_data(client, reg); | ||
565 | } | ||
566 | |||
567 | static int fscpos_write_value(struct i2c_client *client, u8 reg, u8 value) | ||
568 | { | ||
569 | dev_dbg(&client->dev, "Write reg 0x%02x, val 0x%02x\n", reg, value); | ||
570 | return i2c_smbus_write_byte_data(client, reg, value); | ||
571 | } | ||
572 | |||
573 | /* Called when we have found a new FSCPOS chip */ | ||
574 | static void fscpos_init_client(struct i2c_client *client) | ||
575 | { | ||
576 | struct fscpos_data *data = i2c_get_clientdata(client); | ||
577 | |||
578 | /* read revision from chip */ | ||
579 | data->revision = fscpos_read_value(client, FSCPOS_REG_REVISION); | ||
580 | } | ||
581 | |||
582 | static struct fscpos_data *fscpos_update_device(struct device *dev) | ||
583 | { | ||
584 | struct i2c_client *client = to_i2c_client(dev); | ||
585 | struct fscpos_data *data = i2c_get_clientdata(client); | ||
586 | |||
587 | mutex_lock(&data->update_lock); | ||
588 | |||
589 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { | ||
590 | int i; | ||
591 | |||
592 | dev_dbg(&client->dev, "Starting fscpos update\n"); | ||
593 | |||
594 | for (i = 0; i < 3; i++) { | ||
595 | data->temp_act[i] = fscpos_read_value(client, | ||
596 | FSCPOS_REG_TEMP_ACT[i]); | ||
597 | data->temp_status[i] = fscpos_read_value(client, | ||
598 | FSCPOS_REG_TEMP_STATE[i]); | ||
599 | data->fan_act[i] = fscpos_read_value(client, | ||
600 | FSCPOS_REG_FAN_ACT[i]); | ||
601 | data->fan_status[i] = fscpos_read_value(client, | ||
602 | FSCPOS_REG_FAN_STATE[i]); | ||
603 | data->fan_ripple[i] = fscpos_read_value(client, | ||
604 | FSCPOS_REG_FAN_RIPPLE[i]); | ||
605 | if (i < 2) { | ||
606 | /* fan2_min is not supported by the chip */ | ||
607 | data->pwm[i] = fscpos_read_value(client, | ||
608 | FSCPOS_REG_PWM[i]); | ||
609 | } | ||
610 | /* reset fan status if speed is back to > 0 */ | ||
611 | if (data->fan_status[i] != 0 && data->fan_act[i] > 0) { | ||
612 | reset_fan_alarm(client, i); | ||
613 | } | ||
614 | } | ||
615 | |||
616 | data->volt[0] = fscpos_read_value(client, FSCPOS_REG_VOLT_12); | ||
617 | data->volt[1] = fscpos_read_value(client, FSCPOS_REG_VOLT_5); | ||
618 | data->volt[2] = fscpos_read_value(client, FSCPOS_REG_VOLT_BATT); | ||
619 | |||
620 | data->wdog_preset = fscpos_read_value(client, | ||
621 | FSCPOS_REG_WDOG_PRESET); | ||
622 | data->wdog_state = fscpos_read_value(client, | ||
623 | FSCPOS_REG_WDOG_STATE); | ||
624 | data->wdog_control = fscpos_read_value(client, | ||
625 | FSCPOS_REG_WDOG_CONTROL); | ||
626 | |||
627 | data->global_event = fscpos_read_value(client, | ||
628 | FSCPOS_REG_EVENT_STATE); | ||
629 | |||
630 | data->last_updated = jiffies; | ||
631 | data->valid = 1; | ||
632 | } | ||
633 | mutex_unlock(&data->update_lock); | ||
634 | return data; | ||
635 | } | ||
636 | |||
637 | static int __init sm_fscpos_init(void) | ||
638 | { | ||
639 | return i2c_add_driver(&fscpos_driver); | ||
640 | } | ||
641 | |||
642 | static void __exit sm_fscpos_exit(void) | ||
643 | { | ||
644 | i2c_del_driver(&fscpos_driver); | ||
645 | } | ||
646 | |||
647 | MODULE_AUTHOR("Stefan Ott <stefan@desire.ch> based on work from Hermann Jung " | ||
648 | "<hej@odn.de>, Frodo Looijaard <frodol@dds.nl>" | ||
649 | " and Philip Edelbrock <phil@netroedge.com>"); | ||
650 | MODULE_DESCRIPTION("fujitsu siemens poseidon chip driver"); | ||
651 | MODULE_LICENSE("GPL"); | ||
652 | |||
653 | module_init(sm_fscpos_init); | ||
654 | module_exit(sm_fscpos_exit); | ||