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6f9703d0 DW |
1 | /* |
2 | * A hwmon driver for the Analog Devices ADT7470 | |
3 | * Copyright (C) 2007 IBM | |
4 | * | |
5 | * Author: Darrick J. Wong <djwong@us.ibm.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
22 | #include <linux/module.h> | |
23 | #include <linux/jiffies.h> | |
24 | #include <linux/i2c.h> | |
25 | #include <linux/hwmon.h> | |
26 | #include <linux/hwmon-sysfs.h> | |
27 | #include <linux/err.h> | |
28 | #include <linux/mutex.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/log2.h> | |
31 | ||
32 | /* Addresses to scan */ | |
33 | static unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END }; | |
34 | ||
35 | /* Insmod parameters */ | |
36 | I2C_CLIENT_INSMOD_1(adt7470); | |
37 | ||
38 | /* ADT7470 registers */ | |
39 | #define ADT7470_REG_BASE_ADDR 0x20 | |
40 | #define ADT7470_REG_TEMP_BASE_ADDR 0x20 | |
41 | #define ADT7470_REG_TEMP_MAX_ADDR 0x29 | |
42 | #define ADT7470_REG_FAN_BASE_ADDR 0x2A | |
43 | #define ADT7470_REG_FAN_MAX_ADDR 0x31 | |
44 | #define ADT7470_REG_PWM_BASE_ADDR 0x32 | |
45 | #define ADT7470_REG_PWM_MAX_ADDR 0x35 | |
46 | #define ADT7470_REG_PWM_MAX_BASE_ADDR 0x38 | |
47 | #define ADT7470_REG_PWM_MAX_MAX_ADDR 0x3B | |
48 | #define ADT7470_REG_CFG 0x40 | |
49 | #define ADT7470_FSPD_MASK 0x04 | |
50 | #define ADT7470_REG_ALARM1 0x41 | |
51 | #define ADT7470_REG_ALARM2 0x42 | |
52 | #define ADT7470_REG_TEMP_LIMITS_BASE_ADDR 0x44 | |
53 | #define ADT7470_REG_TEMP_LIMITS_MAX_ADDR 0x57 | |
54 | #define ADT7470_REG_FAN_MIN_BASE_ADDR 0x58 | |
55 | #define ADT7470_REG_FAN_MIN_MAX_ADDR 0x5F | |
56 | #define ADT7470_REG_FAN_MAX_BASE_ADDR 0x60 | |
57 | #define ADT7470_REG_FAN_MAX_MAX_ADDR 0x67 | |
58 | #define ADT7470_REG_PWM_CFG_BASE_ADDR 0x68 | |
59 | #define ADT7470_REG_PWM12_CFG 0x68 | |
60 | #define ADT7470_PWM2_AUTO_MASK 0x40 | |
61 | #define ADT7470_PWM1_AUTO_MASK 0x80 | |
62 | #define ADT7470_REG_PWM34_CFG 0x69 | |
63 | #define ADT7470_PWM3_AUTO_MASK 0x40 | |
64 | #define ADT7470_PWM4_AUTO_MASK 0x80 | |
65 | #define ADT7470_REG_PWM_MIN_BASE_ADDR 0x6A | |
66 | #define ADT7470_REG_PWM_MIN_MAX_ADDR 0x6D | |
67 | #define ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR 0x6E | |
68 | #define ADT7470_REG_PWM_TEMP_MIN_MAX_ADDR 0x71 | |
69 | #define ADT7470_REG_ACOUSTICS12 0x75 | |
70 | #define ADT7470_REG_ACOUSTICS34 0x76 | |
71 | #define ADT7470_REG_DEVICE 0x3D | |
72 | #define ADT7470_REG_VENDOR 0x3E | |
73 | #define ADT7470_REG_REVISION 0x3F | |
74 | #define ADT7470_REG_ALARM1_MASK 0x72 | |
75 | #define ADT7470_REG_ALARM2_MASK 0x73 | |
76 | #define ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR 0x7C | |
77 | #define ADT7470_REG_PWM_AUTO_TEMP_MAX_ADDR 0x7D | |
78 | #define ADT7470_REG_MAX_ADDR 0x81 | |
79 | ||
80 | #define ADT7470_TEMP_COUNT 10 | |
81 | #define ADT7470_TEMP_REG(x) (ADT7470_REG_TEMP_BASE_ADDR + (x)) | |
82 | #define ADT7470_TEMP_MIN_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + ((x) * 2)) | |
83 | #define ADT7470_TEMP_MAX_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + \ | |
84 | ((x) * 2) + 1) | |
85 | ||
86 | #define ADT7470_FAN_COUNT 4 | |
87 | #define ADT7470_REG_FAN(x) (ADT7470_REG_FAN_BASE_ADDR + ((x) * 2)) | |
88 | #define ADT7470_REG_FAN_MIN(x) (ADT7470_REG_FAN_MIN_BASE_ADDR + ((x) * 2)) | |
89 | #define ADT7470_REG_FAN_MAX(x) (ADT7470_REG_FAN_MAX_BASE_ADDR + ((x) * 2)) | |
90 | ||
91 | #define ADT7470_PWM_COUNT 4 | |
92 | #define ADT7470_REG_PWM(x) (ADT7470_REG_PWM_BASE_ADDR + (x)) | |
93 | #define ADT7470_REG_PWM_MAX(x) (ADT7470_REG_PWM_MAX_BASE_ADDR + (x)) | |
94 | #define ADT7470_REG_PWM_MIN(x) (ADT7470_REG_PWM_MIN_BASE_ADDR + (x)) | |
95 | #define ADT7470_REG_PWM_TMIN(x) (ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR + (x)) | |
96 | #define ADT7470_REG_PWM_CFG(x) (ADT7470_REG_PWM_CFG_BASE_ADDR + ((x) / 2)) | |
97 | #define ADT7470_REG_PWM_AUTO_TEMP(x) (ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR + \ | |
98 | ((x) / 2)) | |
99 | ||
100 | #define ADT7470_VENDOR 0x41 | |
101 | #define ADT7470_DEVICE 0x70 | |
102 | /* datasheet only mentions a revision 2 */ | |
103 | #define ADT7470_REVISION 0x02 | |
104 | ||
105 | /* "all temps" according to hwmon sysfs interface spec */ | |
106 | #define ADT7470_PWM_ALL_TEMPS 0x3FF | |
107 | ||
108 | /* How often do we reread sensors values? (In jiffies) */ | |
109 | #define SENSOR_REFRESH_INTERVAL (5 * HZ) | |
110 | ||
111 | /* How often do we reread sensor limit values? (In jiffies) */ | |
112 | #define LIMIT_REFRESH_INTERVAL (60 * HZ) | |
113 | ||
114 | /* sleep 1s while gathering temperature data */ | |
115 | #define TEMP_COLLECTION_TIME 1000 | |
116 | ||
117 | #define power_of_2(x) (((x) & ((x) - 1)) == 0) | |
118 | ||
119 | /* datasheet says to divide this number by the fan reading to get fan rpm */ | |
120 | #define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x)) | |
121 | #define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM | |
122 | #define FAN_PERIOD_INVALID 65535 | |
123 | #define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID) | |
124 | ||
125 | struct adt7470_data { | |
126 | struct i2c_client client; | |
127 | struct class_device *class_dev; | |
128 | struct attribute_group attrs; | |
129 | struct mutex lock; | |
130 | char sensors_valid; | |
131 | char limits_valid; | |
132 | unsigned long sensors_last_updated; /* In jiffies */ | |
133 | unsigned long limits_last_updated; /* In jiffies */ | |
134 | ||
135 | s8 temp[ADT7470_TEMP_COUNT]; | |
136 | s8 temp_min[ADT7470_TEMP_COUNT]; | |
137 | s8 temp_max[ADT7470_TEMP_COUNT]; | |
138 | u16 fan[ADT7470_FAN_COUNT]; | |
139 | u16 fan_min[ADT7470_FAN_COUNT]; | |
140 | u16 fan_max[ADT7470_FAN_COUNT]; | |
141 | u16 alarms, alarms_mask; | |
142 | u8 force_pwm_max; | |
143 | u8 pwm[ADT7470_PWM_COUNT]; | |
144 | u8 pwm_max[ADT7470_PWM_COUNT]; | |
145 | u8 pwm_automatic[ADT7470_PWM_COUNT]; | |
146 | u8 pwm_min[ADT7470_PWM_COUNT]; | |
147 | s8 pwm_tmin[ADT7470_PWM_COUNT]; | |
148 | u8 pwm_auto_temp[ADT7470_PWM_COUNT]; | |
149 | }; | |
150 | ||
151 | static int adt7470_attach_adapter(struct i2c_adapter *adapter); | |
152 | static int adt7470_detect(struct i2c_adapter *adapter, int address, int kind); | |
153 | static int adt7470_detach_client(struct i2c_client *client); | |
154 | ||
155 | static struct i2c_driver adt7470_driver = { | |
156 | .driver = { | |
157 | .name = "adt7470", | |
158 | }, | |
159 | .attach_adapter = adt7470_attach_adapter, | |
160 | .detach_client = adt7470_detach_client, | |
161 | }; | |
162 | ||
163 | /* | |
164 | * 16-bit registers on the ADT7470 are low-byte first. The data sheet says | |
165 | * that the low byte must be read before the high byte. | |
166 | */ | |
167 | static inline int adt7470_read_word_data(struct i2c_client *client, u8 reg) | |
168 | { | |
169 | u16 foo; | |
170 | foo = i2c_smbus_read_byte_data(client, reg); | |
171 | foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8); | |
172 | return foo; | |
173 | } | |
174 | ||
175 | static inline int adt7470_write_word_data(struct i2c_client *client, u8 reg, | |
176 | u16 value) | |
177 | { | |
178 | return i2c_smbus_write_byte_data(client, reg, value & 0xFF) | |
179 | && i2c_smbus_write_byte_data(client, reg + 1, value >> 8); | |
180 | } | |
181 | ||
182 | static void adt7470_init_client(struct i2c_client *client) | |
183 | { | |
184 | int reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); | |
185 | ||
186 | if (reg < 0) { | |
187 | dev_err(&client->dev, "cannot read configuration register\n"); | |
188 | } else { | |
189 | /* start monitoring (and do a self-test) */ | |
190 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg | 3); | |
191 | } | |
192 | } | |
193 | ||
194 | static struct adt7470_data *adt7470_update_device(struct device *dev) | |
195 | { | |
196 | struct i2c_client *client = to_i2c_client(dev); | |
197 | struct adt7470_data *data = i2c_get_clientdata(client); | |
198 | unsigned long local_jiffies = jiffies; | |
199 | u8 cfg; | |
200 | int i; | |
201 | ||
202 | mutex_lock(&data->lock); | |
203 | if (time_before(local_jiffies, data->sensors_last_updated + | |
204 | SENSOR_REFRESH_INTERVAL) | |
205 | && data->sensors_valid) | |
206 | goto no_sensor_update; | |
207 | ||
208 | /* start reading temperature sensors */ | |
209 | cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); | |
210 | cfg |= 0x80; | |
211 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg); | |
212 | ||
213 | /* | |
214 | * Delay is 200ms * number of tmp05 sensors. Too bad | |
215 | * there's no way to figure out how many are connected. | |
216 | * For now, assume 1s will work. | |
217 | */ | |
218 | msleep(TEMP_COLLECTION_TIME); | |
219 | ||
220 | /* done reading temperature sensors */ | |
221 | cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); | |
222 | cfg &= ~0x80; | |
223 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg); | |
224 | ||
225 | for (i = 0; i < ADT7470_TEMP_COUNT; i++) | |
226 | data->temp[i] = i2c_smbus_read_byte_data(client, | |
227 | ADT7470_TEMP_REG(i)); | |
228 | ||
229 | for (i = 0; i < ADT7470_FAN_COUNT; i++) | |
230 | data->fan[i] = adt7470_read_word_data(client, | |
231 | ADT7470_REG_FAN(i)); | |
232 | ||
233 | for (i = 0; i < ADT7470_PWM_COUNT; i++) { | |
234 | int reg; | |
235 | int reg_mask; | |
236 | ||
237 | data->pwm[i] = i2c_smbus_read_byte_data(client, | |
238 | ADT7470_REG_PWM(i)); | |
239 | ||
240 | if (i % 2) | |
241 | reg_mask = ADT7470_PWM2_AUTO_MASK; | |
242 | else | |
243 | reg_mask = ADT7470_PWM1_AUTO_MASK; | |
244 | ||
245 | reg = ADT7470_REG_PWM_CFG(i); | |
246 | if (i2c_smbus_read_byte_data(client, reg) & reg_mask) | |
247 | data->pwm_automatic[i] = 1; | |
248 | else | |
249 | data->pwm_automatic[i] = 0; | |
250 | ||
251 | reg = ADT7470_REG_PWM_AUTO_TEMP(i); | |
252 | cfg = i2c_smbus_read_byte_data(client, reg); | |
253 | if (!(i % 2)) | |
254 | data->pwm_auto_temp[i] = cfg >> 4; | |
255 | else | |
256 | data->pwm_auto_temp[i] = cfg & 0xF; | |
257 | } | |
258 | ||
259 | if (i2c_smbus_read_byte_data(client, ADT7470_REG_CFG) & | |
260 | ADT7470_FSPD_MASK) | |
261 | data->force_pwm_max = 1; | |
262 | else | |
263 | data->force_pwm_max = 0; | |
264 | ||
265 | data->alarms = adt7470_read_word_data(client, ADT7470_REG_ALARM1); | |
266 | data->alarms_mask = adt7470_read_word_data(client, | |
267 | ADT7470_REG_ALARM1_MASK); | |
268 | ||
269 | data->sensors_last_updated = local_jiffies; | |
270 | data->sensors_valid = 1; | |
271 | ||
272 | no_sensor_update: | |
273 | if (time_before(local_jiffies, data->limits_last_updated + | |
274 | LIMIT_REFRESH_INTERVAL) | |
275 | && data->limits_valid) | |
276 | goto out; | |
277 | ||
278 | for (i = 0; i < ADT7470_TEMP_COUNT; i++) { | |
279 | data->temp_min[i] = i2c_smbus_read_byte_data(client, | |
280 | ADT7470_TEMP_MIN_REG(i)); | |
281 | data->temp_max[i] = i2c_smbus_read_byte_data(client, | |
282 | ADT7470_TEMP_MAX_REG(i)); | |
283 | } | |
284 | ||
285 | for (i = 0; i < ADT7470_FAN_COUNT; i++) { | |
286 | data->fan_min[i] = adt7470_read_word_data(client, | |
287 | ADT7470_REG_FAN_MIN(i)); | |
288 | data->fan_max[i] = adt7470_read_word_data(client, | |
289 | ADT7470_REG_FAN_MAX(i)); | |
290 | } | |
291 | ||
292 | for (i = 0; i < ADT7470_PWM_COUNT; i++) { | |
293 | data->pwm_max[i] = i2c_smbus_read_byte_data(client, | |
294 | ADT7470_REG_PWM_MAX(i)); | |
295 | data->pwm_min[i] = i2c_smbus_read_byte_data(client, | |
296 | ADT7470_REG_PWM_MIN(i)); | |
297 | data->pwm_tmin[i] = i2c_smbus_read_byte_data(client, | |
298 | ADT7470_REG_PWM_TMIN(i)); | |
299 | } | |
300 | ||
301 | data->limits_last_updated = local_jiffies; | |
302 | data->limits_valid = 1; | |
303 | ||
304 | out: | |
305 | mutex_unlock(&data->lock); | |
306 | return data; | |
307 | } | |
308 | ||
309 | static ssize_t show_temp_min(struct device *dev, | |
310 | struct device_attribute *devattr, | |
311 | char *buf) | |
312 | { | |
313 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
314 | struct adt7470_data *data = adt7470_update_device(dev); | |
315 | return sprintf(buf, "%d\n", 1000 * data->temp_min[attr->index]); | |
316 | } | |
317 | ||
318 | static ssize_t set_temp_min(struct device *dev, | |
319 | struct device_attribute *devattr, | |
320 | const char *buf, | |
321 | size_t count) | |
322 | { | |
323 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
324 | struct i2c_client *client = to_i2c_client(dev); | |
325 | struct adt7470_data *data = i2c_get_clientdata(client); | |
326 | int temp = simple_strtol(buf, NULL, 10) / 1000; | |
327 | ||
328 | mutex_lock(&data->lock); | |
329 | data->temp_min[attr->index] = temp; | |
330 | i2c_smbus_write_byte_data(client, ADT7470_TEMP_MIN_REG(attr->index), | |
331 | temp); | |
332 | mutex_unlock(&data->lock); | |
333 | ||
334 | return count; | |
335 | } | |
336 | ||
337 | static ssize_t show_temp_max(struct device *dev, | |
338 | struct device_attribute *devattr, | |
339 | char *buf) | |
340 | { | |
341 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
342 | struct adt7470_data *data = adt7470_update_device(dev); | |
343 | return sprintf(buf, "%d\n", 1000 * data->temp_max[attr->index]); | |
344 | } | |
345 | ||
346 | static ssize_t set_temp_max(struct device *dev, | |
347 | struct device_attribute *devattr, | |
348 | const char *buf, | |
349 | size_t count) | |
350 | { | |
351 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
352 | struct i2c_client *client = to_i2c_client(dev); | |
353 | struct adt7470_data *data = i2c_get_clientdata(client); | |
354 | int temp = simple_strtol(buf, NULL, 10) / 1000; | |
355 | ||
356 | mutex_lock(&data->lock); | |
357 | data->temp_max[attr->index] = temp; | |
358 | i2c_smbus_write_byte_data(client, ADT7470_TEMP_MAX_REG(attr->index), | |
359 | temp); | |
360 | mutex_unlock(&data->lock); | |
361 | ||
362 | return count; | |
363 | } | |
364 | ||
365 | static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, | |
366 | char *buf) | |
367 | { | |
368 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
369 | struct adt7470_data *data = adt7470_update_device(dev); | |
370 | return sprintf(buf, "%d\n", 1000 * data->temp[attr->index]); | |
371 | } | |
372 | ||
373 | static ssize_t show_alarms(struct device *dev, | |
374 | struct device_attribute *devattr, | |
375 | char *buf) | |
376 | { | |
377 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
378 | struct adt7470_data *data = adt7470_update_device(dev); | |
379 | ||
380 | if (attr->index) | |
381 | return sprintf(buf, "%x\n", data->alarms); | |
382 | else | |
383 | return sprintf(buf, "%x\n", data->alarms_mask); | |
384 | } | |
385 | ||
386 | static ssize_t show_fan_max(struct device *dev, | |
387 | struct device_attribute *devattr, | |
388 | char *buf) | |
389 | { | |
390 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
391 | struct adt7470_data *data = adt7470_update_device(dev); | |
392 | ||
393 | if (FAN_DATA_VALID(data->fan_max[attr->index])) | |
394 | return sprintf(buf, "%d\n", | |
395 | FAN_PERIOD_TO_RPM(data->fan_max[attr->index])); | |
396 | else | |
397 | return sprintf(buf, "0\n"); | |
398 | } | |
399 | ||
400 | static ssize_t set_fan_max(struct device *dev, | |
401 | struct device_attribute *devattr, | |
402 | const char *buf, size_t count) | |
403 | { | |
404 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
405 | struct i2c_client *client = to_i2c_client(dev); | |
406 | struct adt7470_data *data = i2c_get_clientdata(client); | |
407 | int temp = simple_strtol(buf, NULL, 10); | |
408 | ||
409 | if (!temp) | |
410 | return -EINVAL; | |
411 | temp = FAN_RPM_TO_PERIOD(temp); | |
412 | ||
413 | mutex_lock(&data->lock); | |
414 | data->fan_max[attr->index] = temp; | |
415 | adt7470_write_word_data(client, ADT7470_REG_FAN_MAX(attr->index), temp); | |
416 | mutex_unlock(&data->lock); | |
417 | ||
418 | return count; | |
419 | } | |
420 | ||
421 | static ssize_t show_fan_min(struct device *dev, | |
422 | struct device_attribute *devattr, | |
423 | char *buf) | |
424 | { | |
425 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
426 | struct adt7470_data *data = adt7470_update_device(dev); | |
427 | ||
428 | if (FAN_DATA_VALID(data->fan_min[attr->index])) | |
429 | return sprintf(buf, "%d\n", | |
430 | FAN_PERIOD_TO_RPM(data->fan_min[attr->index])); | |
431 | else | |
432 | return sprintf(buf, "0\n"); | |
433 | } | |
434 | ||
435 | static ssize_t set_fan_min(struct device *dev, | |
436 | struct device_attribute *devattr, | |
437 | const char *buf, size_t count) | |
438 | { | |
439 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
440 | struct i2c_client *client = to_i2c_client(dev); | |
441 | struct adt7470_data *data = i2c_get_clientdata(client); | |
442 | int temp = simple_strtol(buf, NULL, 10); | |
443 | ||
444 | if (!temp) | |
445 | return -EINVAL; | |
446 | temp = FAN_RPM_TO_PERIOD(temp); | |
447 | ||
448 | mutex_lock(&data->lock); | |
449 | data->fan_min[attr->index] = temp; | |
450 | adt7470_write_word_data(client, ADT7470_REG_FAN_MIN(attr->index), temp); | |
451 | mutex_unlock(&data->lock); | |
452 | ||
453 | return count; | |
454 | } | |
455 | ||
456 | static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, | |
457 | char *buf) | |
458 | { | |
459 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
460 | struct adt7470_data *data = adt7470_update_device(dev); | |
461 | ||
462 | if (FAN_DATA_VALID(data->fan[attr->index])) | |
463 | return sprintf(buf, "%d\n", | |
464 | FAN_PERIOD_TO_RPM(data->fan[attr->index])); | |
465 | else | |
466 | return sprintf(buf, "0\n"); | |
467 | } | |
468 | ||
469 | static ssize_t show_force_pwm_max(struct device *dev, | |
470 | struct device_attribute *devattr, | |
471 | char *buf) | |
472 | { | |
473 | struct adt7470_data *data = adt7470_update_device(dev); | |
474 | return sprintf(buf, "%d\n", data->force_pwm_max); | |
475 | } | |
476 | ||
477 | static ssize_t set_force_pwm_max(struct device *dev, | |
478 | struct device_attribute *devattr, | |
479 | const char *buf, | |
480 | size_t count) | |
481 | { | |
482 | struct i2c_client *client = to_i2c_client(dev); | |
483 | struct adt7470_data *data = i2c_get_clientdata(client); | |
484 | int temp = simple_strtol(buf, NULL, 10); | |
485 | u8 reg; | |
486 | ||
487 | mutex_lock(&data->lock); | |
488 | data->force_pwm_max = temp; | |
489 | reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); | |
490 | if (temp) | |
491 | reg |= ADT7470_FSPD_MASK; | |
492 | else | |
493 | reg &= ~ADT7470_FSPD_MASK; | |
494 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg); | |
495 | mutex_unlock(&data->lock); | |
496 | ||
497 | return count; | |
498 | } | |
499 | ||
500 | static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr, | |
501 | char *buf) | |
502 | { | |
503 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
504 | struct adt7470_data *data = adt7470_update_device(dev); | |
505 | return sprintf(buf, "%d\n", data->pwm[attr->index]); | |
506 | } | |
507 | ||
508 | static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr, | |
509 | const char *buf, size_t count) | |
510 | { | |
511 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
512 | struct i2c_client *client = to_i2c_client(dev); | |
513 | struct adt7470_data *data = i2c_get_clientdata(client); | |
514 | int temp = simple_strtol(buf, NULL, 10); | |
515 | ||
516 | mutex_lock(&data->lock); | |
517 | data->pwm[attr->index] = temp; | |
518 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(attr->index), temp); | |
519 | mutex_unlock(&data->lock); | |
520 | ||
521 | return count; | |
522 | } | |
523 | ||
524 | static ssize_t show_pwm_max(struct device *dev, | |
525 | struct device_attribute *devattr, | |
526 | char *buf) | |
527 | { | |
528 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
529 | struct adt7470_data *data = adt7470_update_device(dev); | |
530 | return sprintf(buf, "%d\n", data->pwm_max[attr->index]); | |
531 | } | |
532 | ||
533 | static ssize_t set_pwm_max(struct device *dev, | |
534 | struct device_attribute *devattr, | |
535 | const char *buf, | |
536 | size_t count) | |
537 | { | |
538 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
539 | struct i2c_client *client = to_i2c_client(dev); | |
540 | struct adt7470_data *data = i2c_get_clientdata(client); | |
541 | int temp = simple_strtol(buf, NULL, 10); | |
542 | ||
543 | mutex_lock(&data->lock); | |
544 | data->pwm_max[attr->index] = temp; | |
545 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MAX(attr->index), | |
546 | temp); | |
547 | mutex_unlock(&data->lock); | |
548 | ||
549 | return count; | |
550 | } | |
551 | ||
552 | static ssize_t show_pwm_min(struct device *dev, | |
553 | struct device_attribute *devattr, | |
554 | char *buf) | |
555 | { | |
556 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
557 | struct adt7470_data *data = adt7470_update_device(dev); | |
558 | return sprintf(buf, "%d\n", data->pwm_min[attr->index]); | |
559 | } | |
560 | ||
561 | static ssize_t set_pwm_min(struct device *dev, | |
562 | struct device_attribute *devattr, | |
563 | const char *buf, | |
564 | size_t count) | |
565 | { | |
566 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
567 | struct i2c_client *client = to_i2c_client(dev); | |
568 | struct adt7470_data *data = i2c_get_clientdata(client); | |
569 | int temp = simple_strtol(buf, NULL, 10); | |
570 | ||
571 | mutex_lock(&data->lock); | |
572 | data->pwm_min[attr->index] = temp; | |
573 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MIN(attr->index), | |
574 | temp); | |
575 | mutex_unlock(&data->lock); | |
576 | ||
577 | return count; | |
578 | } | |
579 | ||
580 | static ssize_t show_pwm_tmax(struct device *dev, | |
581 | struct device_attribute *devattr, | |
582 | char *buf) | |
583 | { | |
584 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
585 | struct adt7470_data *data = adt7470_update_device(dev); | |
586 | /* the datasheet says that tmax = tmin + 20C */ | |
587 | return sprintf(buf, "%d\n", 1000 * (20 + data->pwm_tmin[attr->index])); | |
588 | } | |
589 | ||
590 | static ssize_t show_pwm_tmin(struct device *dev, | |
591 | struct device_attribute *devattr, | |
592 | char *buf) | |
593 | { | |
594 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
595 | struct adt7470_data *data = adt7470_update_device(dev); | |
596 | return sprintf(buf, "%d\n", 1000 * data->pwm_tmin[attr->index]); | |
597 | } | |
598 | ||
599 | static ssize_t set_pwm_tmin(struct device *dev, | |
600 | struct device_attribute *devattr, | |
601 | const char *buf, | |
602 | size_t count) | |
603 | { | |
604 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
605 | struct i2c_client *client = to_i2c_client(dev); | |
606 | struct adt7470_data *data = i2c_get_clientdata(client); | |
607 | int temp = simple_strtol(buf, NULL, 10) / 1000; | |
608 | ||
609 | mutex_lock(&data->lock); | |
610 | data->pwm_tmin[attr->index] = temp; | |
611 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_TMIN(attr->index), | |
612 | temp); | |
613 | mutex_unlock(&data->lock); | |
614 | ||
615 | return count; | |
616 | } | |
617 | ||
618 | static ssize_t show_pwm_auto(struct device *dev, | |
619 | struct device_attribute *devattr, | |
620 | char *buf) | |
621 | { | |
622 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
623 | struct adt7470_data *data = adt7470_update_device(dev); | |
624 | return sprintf(buf, "%d\n", 1 + data->pwm_automatic[attr->index]); | |
625 | } | |
626 | ||
627 | static ssize_t set_pwm_auto(struct device *dev, | |
628 | struct device_attribute *devattr, | |
629 | const char *buf, | |
630 | size_t count) | |
631 | { | |
632 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
633 | struct i2c_client *client = to_i2c_client(dev); | |
634 | struct adt7470_data *data = i2c_get_clientdata(client); | |
635 | int temp = simple_strtol(buf, NULL, 10); | |
636 | int pwm_auto_reg = ADT7470_REG_PWM_CFG(attr->index); | |
637 | int pwm_auto_reg_mask; | |
638 | u8 reg; | |
639 | ||
640 | if (attr->index % 2) | |
641 | pwm_auto_reg_mask = ADT7470_PWM2_AUTO_MASK; | |
642 | else | |
643 | pwm_auto_reg_mask = ADT7470_PWM1_AUTO_MASK; | |
644 | ||
645 | if (temp != 2 && temp != 1) | |
646 | return -EINVAL; | |
647 | temp--; | |
648 | ||
649 | mutex_lock(&data->lock); | |
650 | data->pwm_automatic[attr->index] = temp; | |
651 | reg = i2c_smbus_read_byte_data(client, pwm_auto_reg); | |
652 | if (temp) | |
653 | reg |= pwm_auto_reg_mask; | |
654 | else | |
655 | reg &= ~pwm_auto_reg_mask; | |
656 | i2c_smbus_write_byte_data(client, pwm_auto_reg, reg); | |
657 | mutex_unlock(&data->lock); | |
658 | ||
659 | return count; | |
660 | } | |
661 | ||
662 | static ssize_t show_pwm_auto_temp(struct device *dev, | |
663 | struct device_attribute *devattr, | |
664 | char *buf) | |
665 | { | |
666 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
667 | struct adt7470_data *data = adt7470_update_device(dev); | |
668 | u8 ctrl = data->pwm_auto_temp[attr->index]; | |
669 | ||
670 | if (ctrl) | |
671 | return sprintf(buf, "%d\n", 1 << (ctrl - 1)); | |
672 | else | |
673 | return sprintf(buf, "%d\n", ADT7470_PWM_ALL_TEMPS); | |
674 | } | |
675 | ||
676 | static int cvt_auto_temp(int input) | |
677 | { | |
678 | if (input == ADT7470_PWM_ALL_TEMPS) | |
679 | return 0; | |
680 | if (input < 1 || !power_of_2(input)) | |
681 | return -EINVAL; | |
682 | return ilog2(input) + 1; | |
683 | } | |
684 | ||
685 | static ssize_t set_pwm_auto_temp(struct device *dev, | |
686 | struct device_attribute *devattr, | |
687 | const char *buf, | |
688 | size_t count) | |
689 | { | |
690 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
691 | struct i2c_client *client = to_i2c_client(dev); | |
692 | struct adt7470_data *data = i2c_get_clientdata(client); | |
693 | int temp = cvt_auto_temp(simple_strtol(buf, NULL, 10)); | |
694 | int pwm_auto_reg = ADT7470_REG_PWM_AUTO_TEMP(attr->index); | |
695 | u8 reg; | |
696 | ||
697 | if (temp < 0) | |
698 | return temp; | |
699 | ||
700 | mutex_lock(&data->lock); | |
701 | data->pwm_automatic[attr->index] = temp; | |
702 | reg = i2c_smbus_read_byte_data(client, pwm_auto_reg); | |
703 | ||
704 | if (!(attr->index % 2)) { | |
705 | reg &= 0xF; | |
706 | reg |= (temp << 4) & 0xF0; | |
707 | } else { | |
708 | reg &= 0xF0; | |
709 | reg |= temp & 0xF; | |
710 | } | |
711 | ||
712 | i2c_smbus_write_byte_data(client, pwm_auto_reg, reg); | |
713 | mutex_unlock(&data->lock); | |
714 | ||
715 | return count; | |
716 | } | |
717 | ||
718 | static SENSOR_DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL, 0); | |
719 | static SENSOR_DEVICE_ATTR(alarm_mask, S_IRUGO, show_alarms, NULL, 1); | |
720 | ||
721 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, | |
722 | set_temp_max, 0); | |
723 | static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max, | |
724 | set_temp_max, 1); | |
725 | static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_max, | |
726 | set_temp_max, 2); | |
727 | static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp_max, | |
728 | set_temp_max, 3); | |
729 | static SENSOR_DEVICE_ATTR(temp5_max, S_IWUSR | S_IRUGO, show_temp_max, | |
730 | set_temp_max, 4); | |
731 | static SENSOR_DEVICE_ATTR(temp6_max, S_IWUSR | S_IRUGO, show_temp_max, | |
732 | set_temp_max, 5); | |
733 | static SENSOR_DEVICE_ATTR(temp7_max, S_IWUSR | S_IRUGO, show_temp_max, | |
734 | set_temp_max, 6); | |
735 | static SENSOR_DEVICE_ATTR(temp8_max, S_IWUSR | S_IRUGO, show_temp_max, | |
736 | set_temp_max, 7); | |
737 | static SENSOR_DEVICE_ATTR(temp9_max, S_IWUSR | S_IRUGO, show_temp_max, | |
738 | set_temp_max, 8); | |
739 | static SENSOR_DEVICE_ATTR(temp10_max, S_IWUSR | S_IRUGO, show_temp_max, | |
740 | set_temp_max, 9); | |
741 | ||
742 | static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min, | |
743 | set_temp_min, 0); | |
744 | static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min, | |
745 | set_temp_min, 1); | |
746 | static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_temp_min, | |
747 | set_temp_min, 2); | |
748 | static SENSOR_DEVICE_ATTR(temp4_min, S_IWUSR | S_IRUGO, show_temp_min, | |
749 | set_temp_min, 3); | |
750 | static SENSOR_DEVICE_ATTR(temp5_min, S_IWUSR | S_IRUGO, show_temp_min, | |
751 | set_temp_min, 4); | |
752 | static SENSOR_DEVICE_ATTR(temp6_min, S_IWUSR | S_IRUGO, show_temp_min, | |
753 | set_temp_min, 5); | |
754 | static SENSOR_DEVICE_ATTR(temp7_min, S_IWUSR | S_IRUGO, show_temp_min, | |
755 | set_temp_min, 6); | |
756 | static SENSOR_DEVICE_ATTR(temp8_min, S_IWUSR | S_IRUGO, show_temp_min, | |
757 | set_temp_min, 7); | |
758 | static SENSOR_DEVICE_ATTR(temp9_min, S_IWUSR | S_IRUGO, show_temp_min, | |
759 | set_temp_min, 8); | |
760 | static SENSOR_DEVICE_ATTR(temp10_min, S_IWUSR | S_IRUGO, show_temp_min, | |
761 | set_temp_min, 9); | |
762 | ||
763 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); | |
764 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); | |
765 | static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2); | |
766 | static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3); | |
767 | static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4); | |
768 | static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5); | |
769 | static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6); | |
770 | static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7); | |
771 | static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8); | |
772 | static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, show_temp, NULL, 9); | |
773 | ||
774 | static SENSOR_DEVICE_ATTR(fan1_max, S_IWUSR | S_IRUGO, show_fan_max, | |
775 | set_fan_max, 0); | |
776 | static SENSOR_DEVICE_ATTR(fan2_max, S_IWUSR | S_IRUGO, show_fan_max, | |
777 | set_fan_max, 1); | |
778 | static SENSOR_DEVICE_ATTR(fan3_max, S_IWUSR | S_IRUGO, show_fan_max, | |
779 | set_fan_max, 2); | |
780 | static SENSOR_DEVICE_ATTR(fan4_max, S_IWUSR | S_IRUGO, show_fan_max, | |
781 | set_fan_max, 3); | |
782 | ||
783 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, | |
784 | set_fan_min, 0); | |
785 | static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, | |
786 | set_fan_min, 1); | |
787 | static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, | |
788 | set_fan_min, 2); | |
789 | static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min, | |
790 | set_fan_min, 3); | |
791 | ||
792 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); | |
793 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); | |
794 | static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2); | |
795 | static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3); | |
796 | ||
797 | static SENSOR_DEVICE_ATTR(force_pwm_max, S_IWUSR | S_IRUGO, | |
798 | show_force_pwm_max, set_force_pwm_max, 0); | |
799 | ||
800 | static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0); | |
801 | static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1); | |
802 | static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2); | |
803 | static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3); | |
804 | ||
805 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO, | |
806 | show_pwm_min, set_pwm_min, 0); | |
807 | static SENSOR_DEVICE_ATTR(pwm2_auto_point1_pwm, S_IWUSR | S_IRUGO, | |
808 | show_pwm_min, set_pwm_min, 1); | |
809 | static SENSOR_DEVICE_ATTR(pwm3_auto_point1_pwm, S_IWUSR | S_IRUGO, | |
810 | show_pwm_min, set_pwm_min, 2); | |
811 | static SENSOR_DEVICE_ATTR(pwm4_auto_point1_pwm, S_IWUSR | S_IRUGO, | |
812 | show_pwm_min, set_pwm_min, 3); | |
813 | ||
814 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO, | |
815 | show_pwm_max, set_pwm_max, 0); | |
816 | static SENSOR_DEVICE_ATTR(pwm2_auto_point2_pwm, S_IWUSR | S_IRUGO, | |
817 | show_pwm_max, set_pwm_max, 1); | |
818 | static SENSOR_DEVICE_ATTR(pwm3_auto_point2_pwm, S_IWUSR | S_IRUGO, | |
819 | show_pwm_max, set_pwm_max, 2); | |
820 | static SENSOR_DEVICE_ATTR(pwm4_auto_point2_pwm, S_IWUSR | S_IRUGO, | |
821 | show_pwm_max, set_pwm_max, 3); | |
822 | ||
823 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO, | |
824 | show_pwm_tmin, set_pwm_tmin, 0); | |
825 | static SENSOR_DEVICE_ATTR(pwm2_auto_point1_temp, S_IWUSR | S_IRUGO, | |
826 | show_pwm_tmin, set_pwm_tmin, 1); | |
827 | static SENSOR_DEVICE_ATTR(pwm3_auto_point1_temp, S_IWUSR | S_IRUGO, | |
828 | show_pwm_tmin, set_pwm_tmin, 2); | |
829 | static SENSOR_DEVICE_ATTR(pwm4_auto_point1_temp, S_IWUSR | S_IRUGO, | |
830 | show_pwm_tmin, set_pwm_tmin, 3); | |
831 | ||
832 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IRUGO, show_pwm_tmax, | |
833 | NULL, 0); | |
834 | static SENSOR_DEVICE_ATTR(pwm2_auto_point2_temp, S_IRUGO, show_pwm_tmax, | |
835 | NULL, 1); | |
836 | static SENSOR_DEVICE_ATTR(pwm3_auto_point2_temp, S_IRUGO, show_pwm_tmax, | |
837 | NULL, 2); | |
838 | static SENSOR_DEVICE_ATTR(pwm4_auto_point2_temp, S_IRUGO, show_pwm_tmax, | |
839 | NULL, 3); | |
840 | ||
841 | static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_auto, | |
842 | set_pwm_auto, 0); | |
843 | static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_auto, | |
844 | set_pwm_auto, 1); | |
845 | static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_auto, | |
846 | set_pwm_auto, 2); | |
847 | static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_auto, | |
848 | set_pwm_auto, 3); | |
849 | ||
850 | static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IWUSR | S_IRUGO, | |
851 | show_pwm_auto_temp, set_pwm_auto_temp, 0); | |
852 | static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IWUSR | S_IRUGO, | |
853 | show_pwm_auto_temp, set_pwm_auto_temp, 1); | |
854 | static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IWUSR | S_IRUGO, | |
855 | show_pwm_auto_temp, set_pwm_auto_temp, 2); | |
856 | static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IWUSR | S_IRUGO, | |
857 | show_pwm_auto_temp, set_pwm_auto_temp, 3); | |
858 | ||
859 | static struct attribute *adt7470_attr[] = | |
860 | { | |
861 | &sensor_dev_attr_alarms.dev_attr.attr, | |
862 | &sensor_dev_attr_alarm_mask.dev_attr.attr, | |
863 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
864 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
865 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
866 | &sensor_dev_attr_temp4_max.dev_attr.attr, | |
867 | &sensor_dev_attr_temp5_max.dev_attr.attr, | |
868 | &sensor_dev_attr_temp6_max.dev_attr.attr, | |
869 | &sensor_dev_attr_temp7_max.dev_attr.attr, | |
870 | &sensor_dev_attr_temp8_max.dev_attr.attr, | |
871 | &sensor_dev_attr_temp9_max.dev_attr.attr, | |
872 | &sensor_dev_attr_temp10_max.dev_attr.attr, | |
873 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
874 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
875 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
876 | &sensor_dev_attr_temp4_min.dev_attr.attr, | |
877 | &sensor_dev_attr_temp5_min.dev_attr.attr, | |
878 | &sensor_dev_attr_temp6_min.dev_attr.attr, | |
879 | &sensor_dev_attr_temp7_min.dev_attr.attr, | |
880 | &sensor_dev_attr_temp8_min.dev_attr.attr, | |
881 | &sensor_dev_attr_temp9_min.dev_attr.attr, | |
882 | &sensor_dev_attr_temp10_min.dev_attr.attr, | |
883 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
884 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
885 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
886 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
887 | &sensor_dev_attr_temp5_input.dev_attr.attr, | |
888 | &sensor_dev_attr_temp6_input.dev_attr.attr, | |
889 | &sensor_dev_attr_temp7_input.dev_attr.attr, | |
890 | &sensor_dev_attr_temp8_input.dev_attr.attr, | |
891 | &sensor_dev_attr_temp9_input.dev_attr.attr, | |
892 | &sensor_dev_attr_temp10_input.dev_attr.attr, | |
893 | &sensor_dev_attr_fan1_max.dev_attr.attr, | |
894 | &sensor_dev_attr_fan2_max.dev_attr.attr, | |
895 | &sensor_dev_attr_fan3_max.dev_attr.attr, | |
896 | &sensor_dev_attr_fan4_max.dev_attr.attr, | |
897 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
898 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
899 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
900 | &sensor_dev_attr_fan4_min.dev_attr.attr, | |
901 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
902 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
903 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
904 | &sensor_dev_attr_fan4_input.dev_attr.attr, | |
905 | &sensor_dev_attr_force_pwm_max.dev_attr.attr, | |
906 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
907 | &sensor_dev_attr_pwm2.dev_attr.attr, | |
908 | &sensor_dev_attr_pwm3.dev_attr.attr, | |
909 | &sensor_dev_attr_pwm4.dev_attr.attr, | |
910 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, | |
911 | &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, | |
912 | &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, | |
913 | &sensor_dev_attr_pwm4_auto_point1_pwm.dev_attr.attr, | |
914 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, | |
915 | &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, | |
916 | &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, | |
917 | &sensor_dev_attr_pwm4_auto_point2_pwm.dev_attr.attr, | |
918 | &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, | |
919 | &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, | |
920 | &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr, | |
921 | &sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr, | |
922 | &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, | |
923 | &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, | |
924 | &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr, | |
925 | &sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.attr, | |
926 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
927 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
928 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
929 | &sensor_dev_attr_pwm4_enable.dev_attr.attr, | |
930 | &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, | |
931 | &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, | |
932 | &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, | |
933 | &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr, | |
934 | NULL | |
935 | }; | |
936 | ||
937 | static int adt7470_attach_adapter(struct i2c_adapter *adapter) | |
938 | { | |
939 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
940 | return 0; | |
941 | return i2c_probe(adapter, &addr_data, adt7470_detect); | |
942 | } | |
943 | ||
944 | static int adt7470_detect(struct i2c_adapter *adapter, int address, int kind) | |
945 | { | |
946 | struct i2c_client *client; | |
947 | struct adt7470_data *data; | |
948 | int err = 0; | |
949 | ||
950 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
951 | goto exit; | |
952 | ||
953 | if (!(data = kzalloc(sizeof(struct adt7470_data), GFP_KERNEL))) { | |
954 | err = -ENOMEM; | |
955 | goto exit; | |
956 | } | |
957 | ||
958 | client = &data->client; | |
959 | client->addr = address; | |
960 | client->adapter = adapter; | |
961 | client->driver = &adt7470_driver; | |
962 | ||
963 | i2c_set_clientdata(client, data); | |
964 | ||
965 | mutex_init(&data->lock); | |
966 | ||
967 | if (kind <= 0) { | |
968 | int vendor, device, revision; | |
969 | ||
970 | vendor = i2c_smbus_read_byte_data(client, ADT7470_REG_VENDOR); | |
971 | if (vendor != ADT7470_VENDOR) { | |
972 | err = -ENODEV; | |
973 | goto exit_free; | |
974 | } | |
975 | ||
976 | device = i2c_smbus_read_byte_data(client, ADT7470_REG_DEVICE); | |
977 | if (device != ADT7470_DEVICE) { | |
978 | err = -ENODEV; | |
979 | goto exit_free; | |
980 | } | |
981 | ||
982 | revision = i2c_smbus_read_byte_data(client, | |
983 | ADT7470_REG_REVISION); | |
984 | if (revision != ADT7470_REVISION) { | |
985 | err = -ENODEV; | |
986 | goto exit_free; | |
987 | } | |
988 | } else | |
989 | dev_dbg(&adapter->dev, "detection forced\n"); | |
990 | ||
991 | strlcpy(client->name, "adt7470", I2C_NAME_SIZE); | |
992 | ||
993 | if ((err = i2c_attach_client(client))) | |
994 | goto exit_free; | |
995 | ||
996 | dev_info(&client->dev, "%s chip found\n", client->name); | |
997 | ||
998 | /* Initialize the ADT7470 chip */ | |
999 | adt7470_init_client(client); | |
1000 | ||
1001 | /* Register sysfs hooks */ | |
1002 | data->attrs.attrs = adt7470_attr; | |
1003 | if ((err = sysfs_create_group(&client->dev.kobj, &data->attrs))) | |
1004 | goto exit_detach; | |
1005 | ||
1006 | data->class_dev = hwmon_device_register(&client->dev); | |
1007 | if (IS_ERR(data->class_dev)) { | |
1008 | err = PTR_ERR(data->class_dev); | |
1009 | goto exit_remove; | |
1010 | } | |
1011 | ||
1012 | return 0; | |
1013 | ||
1014 | exit_remove: | |
1015 | sysfs_remove_group(&client->dev.kobj, &data->attrs); | |
1016 | exit_detach: | |
1017 | i2c_detach_client(client); | |
1018 | exit_free: | |
1019 | kfree(data); | |
1020 | exit: | |
1021 | return err; | |
1022 | } | |
1023 | ||
1024 | static int adt7470_detach_client(struct i2c_client *client) | |
1025 | { | |
1026 | struct adt7470_data *data = i2c_get_clientdata(client); | |
1027 | ||
1028 | hwmon_device_unregister(data->class_dev); | |
1029 | sysfs_remove_group(&client->dev.kobj, &data->attrs); | |
1030 | i2c_detach_client(client); | |
1031 | kfree(data); | |
1032 | return 0; | |
1033 | } | |
1034 | ||
1035 | static int __init adt7470_init(void) | |
1036 | { | |
1037 | return i2c_add_driver(&adt7470_driver); | |
1038 | } | |
1039 | ||
1040 | static void __exit adt7470_exit(void) | |
1041 | { | |
1042 | i2c_del_driver(&adt7470_driver); | |
1043 | } | |
1044 | ||
1045 | MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>"); | |
1046 | MODULE_DESCRIPTION("ADT7470 driver"); | |
1047 | MODULE_LICENSE("GPL"); | |
1048 | ||
1049 | module_init(adt7470_init); | |
1050 | module_exit(adt7470_exit); |