1 | /* |
2 | * A hwmon driver for the Analog Devices ADT7470 |
3 | * Copyright (C) 2007 IBM |
4 | * |
5 | * Author: Darrick J. Wong <darrick.wong@oracle.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 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
23 | |
24 | #include <linux/module.h> |
25 | #include <linux/jiffies.h> |
26 | #include <linux/i2c.h> |
27 | #include <linux/hwmon.h> |
28 | #include <linux/hwmon-sysfs.h> |
29 | #include <linux/err.h> |
30 | #include <linux/mutex.h> |
31 | #include <linux/delay.h> |
32 | #include <linux/log2.h> |
33 | #include <linux/kthread.h> |
34 | #include <linux/slab.h> |
35 | #include <linux/util_macros.h> |
36 | |
37 | /* Addresses to scan */ |
38 | static const unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END }; |
39 | |
40 | /* ADT7470 registers */ |
41 | #define ADT7470_REG_BASE_ADDR 0x20 |
42 | #define ADT7470_REG_TEMP_BASE_ADDR 0x20 |
43 | #define ADT7470_REG_TEMP_MAX_ADDR 0x29 |
44 | #define ADT7470_REG_FAN_BASE_ADDR 0x2A |
45 | #define ADT7470_REG_FAN_MAX_ADDR 0x31 |
46 | #define ADT7470_REG_PWM_BASE_ADDR 0x32 |
47 | #define ADT7470_REG_PWM_MAX_ADDR 0x35 |
48 | #define ADT7470_REG_PWM_MAX_BASE_ADDR 0x38 |
49 | #define ADT7470_REG_PWM_MAX_MAX_ADDR 0x3B |
50 | #define ADT7470_REG_CFG 0x40 |
51 | #define ADT7470_FSPD_MASK 0x04 |
52 | #define ADT7470_REG_ALARM1 0x41 |
53 | #define ADT7470_R1T_ALARM 0x01 |
54 | #define ADT7470_R2T_ALARM 0x02 |
55 | #define ADT7470_R3T_ALARM 0x04 |
56 | #define ADT7470_R4T_ALARM 0x08 |
57 | #define ADT7470_R5T_ALARM 0x10 |
58 | #define ADT7470_R6T_ALARM 0x20 |
59 | #define ADT7470_R7T_ALARM 0x40 |
60 | #define ADT7470_OOL_ALARM 0x80 |
61 | #define ADT7470_REG_ALARM2 0x42 |
62 | #define ADT7470_R8T_ALARM 0x01 |
63 | #define ADT7470_R9T_ALARM 0x02 |
64 | #define ADT7470_R10T_ALARM 0x04 |
65 | #define ADT7470_FAN1_ALARM 0x10 |
66 | #define ADT7470_FAN2_ALARM 0x20 |
67 | #define ADT7470_FAN3_ALARM 0x40 |
68 | #define ADT7470_FAN4_ALARM 0x80 |
69 | #define ADT7470_REG_TEMP_LIMITS_BASE_ADDR 0x44 |
70 | #define ADT7470_REG_TEMP_LIMITS_MAX_ADDR 0x57 |
71 | #define ADT7470_REG_FAN_MIN_BASE_ADDR 0x58 |
72 | #define ADT7470_REG_FAN_MIN_MAX_ADDR 0x5F |
73 | #define ADT7470_REG_FAN_MAX_BASE_ADDR 0x60 |
74 | #define ADT7470_REG_FAN_MAX_MAX_ADDR 0x67 |
75 | #define ADT7470_REG_PWM_CFG_BASE_ADDR 0x68 |
76 | #define ADT7470_REG_PWM12_CFG 0x68 |
77 | #define ADT7470_PWM2_AUTO_MASK 0x40 |
78 | #define ADT7470_PWM1_AUTO_MASK 0x80 |
79 | #define ADT7470_PWM_AUTO_MASK 0xC0 |
80 | #define ADT7470_REG_PWM34_CFG 0x69 |
81 | #define ADT7470_PWM3_AUTO_MASK 0x40 |
82 | #define ADT7470_PWM4_AUTO_MASK 0x80 |
83 | #define ADT7470_REG_PWM_MIN_BASE_ADDR 0x6A |
84 | #define ADT7470_REG_PWM_MIN_MAX_ADDR 0x6D |
85 | #define ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR 0x6E |
86 | #define ADT7470_REG_PWM_TEMP_MIN_MAX_ADDR 0x71 |
87 | #define ADT7470_REG_CFG_2 0x74 |
88 | #define ADT7470_REG_ACOUSTICS12 0x75 |
89 | #define ADT7470_REG_ACOUSTICS34 0x76 |
90 | #define ADT7470_REG_DEVICE 0x3D |
91 | #define ADT7470_REG_VENDOR 0x3E |
92 | #define ADT7470_REG_REVISION 0x3F |
93 | #define ADT7470_REG_ALARM1_MASK 0x72 |
94 | #define ADT7470_REG_ALARM2_MASK 0x73 |
95 | #define ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR 0x7C |
96 | #define ADT7470_REG_PWM_AUTO_TEMP_MAX_ADDR 0x7D |
97 | #define ADT7470_REG_MAX_ADDR 0x81 |
98 | |
99 | #define ADT7470_TEMP_COUNT 10 |
100 | #define ADT7470_TEMP_REG(x) (ADT7470_REG_TEMP_BASE_ADDR + (x)) |
101 | #define ADT7470_TEMP_MIN_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + ((x) * 2)) |
102 | #define ADT7470_TEMP_MAX_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + \ |
103 | ((x) * 2) + 1) |
104 | |
105 | #define ADT7470_FAN_COUNT 4 |
106 | #define ADT7470_REG_FAN(x) (ADT7470_REG_FAN_BASE_ADDR + ((x) * 2)) |
107 | #define ADT7470_REG_FAN_MIN(x) (ADT7470_REG_FAN_MIN_BASE_ADDR + ((x) * 2)) |
108 | #define ADT7470_REG_FAN_MAX(x) (ADT7470_REG_FAN_MAX_BASE_ADDR + ((x) * 2)) |
109 | |
110 | #define ADT7470_PWM_COUNT 4 |
111 | #define ADT7470_REG_PWM(x) (ADT7470_REG_PWM_BASE_ADDR + (x)) |
112 | #define ADT7470_REG_PWM_MAX(x) (ADT7470_REG_PWM_MAX_BASE_ADDR + (x)) |
113 | #define ADT7470_REG_PWM_MIN(x) (ADT7470_REG_PWM_MIN_BASE_ADDR + (x)) |
114 | #define ADT7470_REG_PWM_TMIN(x) (ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR + (x)) |
115 | #define ADT7470_REG_PWM_CFG(x) (ADT7470_REG_PWM_CFG_BASE_ADDR + ((x) / 2)) |
116 | #define ADT7470_REG_PWM_AUTO_TEMP(x) (ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR + \ |
117 | ((x) / 2)) |
118 | |
119 | #define ALARM2(x) ((x) << 8) |
120 | |
121 | #define ADT7470_VENDOR 0x41 |
122 | #define ADT7470_DEVICE 0x70 |
123 | /* datasheet only mentions a revision 2 */ |
124 | #define ADT7470_REVISION 0x02 |
125 | |
126 | /* "all temps" according to hwmon sysfs interface spec */ |
127 | #define ADT7470_PWM_ALL_TEMPS 0x3FF |
128 | |
129 | /* How often do we reread sensors values? (In jiffies) */ |
130 | #define SENSOR_REFRESH_INTERVAL (5 * HZ) |
131 | |
132 | /* How often do we reread sensor limit values? (In jiffies) */ |
133 | #define LIMIT_REFRESH_INTERVAL (60 * HZ) |
134 | |
135 | /* Wait at least 200ms per sensor for 10 sensors */ |
136 | #define TEMP_COLLECTION_TIME 2000 |
137 | |
138 | /* auto update thing won't fire more than every 2s */ |
139 | #define AUTO_UPDATE_INTERVAL 2000 |
140 | |
141 | /* datasheet says to divide this number by the fan reading to get fan rpm */ |
142 | #define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x)) |
143 | #define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM |
144 | #define FAN_PERIOD_INVALID 65535 |
145 | #define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID) |
146 | |
147 | /* Config registers 1 and 2 include fields for selecting the PWM frequency */ |
148 | #define ADT7470_CFG_LF 0x40 |
149 | #define ADT7470_FREQ_MASK 0x70 |
150 | #define ADT7470_FREQ_SHIFT 4 |
151 | |
152 | struct adt7470_data { |
153 | struct i2c_client *client; |
154 | struct mutex lock; |
155 | char sensors_valid; |
156 | char limits_valid; |
157 | unsigned long sensors_last_updated; /* In jiffies */ |
158 | unsigned long limits_last_updated; /* In jiffies */ |
159 | |
160 | int num_temp_sensors; /* -1 = probe */ |
161 | int temperatures_probed; |
162 | |
163 | s8 temp[ADT7470_TEMP_COUNT]; |
164 | s8 temp_min[ADT7470_TEMP_COUNT]; |
165 | s8 temp_max[ADT7470_TEMP_COUNT]; |
166 | u16 fan[ADT7470_FAN_COUNT]; |
167 | u16 fan_min[ADT7470_FAN_COUNT]; |
168 | u16 fan_max[ADT7470_FAN_COUNT]; |
169 | u16 alarm; |
170 | u16 alarms_mask; |
171 | u8 force_pwm_max; |
172 | u8 pwm[ADT7470_PWM_COUNT]; |
173 | u8 pwm_max[ADT7470_PWM_COUNT]; |
174 | u8 pwm_automatic[ADT7470_PWM_COUNT]; |
175 | u8 pwm_min[ADT7470_PWM_COUNT]; |
176 | s8 pwm_tmin[ADT7470_PWM_COUNT]; |
177 | u8 pwm_auto_temp[ADT7470_PWM_COUNT]; |
178 | |
179 | struct task_struct *auto_update; |
180 | unsigned int auto_update_interval; |
181 | }; |
182 | |
183 | /* |
184 | * 16-bit registers on the ADT7470 are low-byte first. The data sheet says |
185 | * that the low byte must be read before the high byte. |
186 | */ |
187 | static inline int adt7470_read_word_data(struct i2c_client *client, u8 reg) |
188 | { |
189 | u16 foo; |
190 | foo = i2c_smbus_read_byte_data(client, reg); |
191 | foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8); |
192 | return foo; |
193 | } |
194 | |
195 | static inline int adt7470_write_word_data(struct i2c_client *client, u8 reg, |
196 | u16 value) |
197 | { |
198 | return i2c_smbus_write_byte_data(client, reg, value & 0xFF) |
199 | || i2c_smbus_write_byte_data(client, reg + 1, value >> 8); |
200 | } |
201 | |
202 | /* Probe for temperature sensors. Assumes lock is held */ |
203 | static int adt7470_read_temperatures(struct i2c_client *client, |
204 | struct adt7470_data *data) |
205 | { |
206 | unsigned long res; |
207 | int i; |
208 | u8 cfg, pwm[4], pwm_cfg[2]; |
209 | |
210 | /* save pwm[1-4] config register */ |
211 | pwm_cfg[0] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM_CFG(0)); |
212 | pwm_cfg[1] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM_CFG(2)); |
213 | |
214 | /* set manual pwm to whatever it is set to now */ |
215 | for (i = 0; i < ADT7470_FAN_COUNT; i++) |
216 | pwm[i] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM(i)); |
217 | |
218 | /* put pwm in manual mode */ |
219 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(0), |
220 | pwm_cfg[0] & ~(ADT7470_PWM_AUTO_MASK)); |
221 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(2), |
222 | pwm_cfg[1] & ~(ADT7470_PWM_AUTO_MASK)); |
223 | |
224 | /* write pwm control to whatever it was */ |
225 | for (i = 0; i < ADT7470_FAN_COUNT; i++) |
226 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(i), pwm[i]); |
227 | |
228 | /* start reading temperature sensors */ |
229 | cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); |
230 | cfg |= 0x80; |
231 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg); |
232 | |
233 | /* Delay is 200ms * number of temp sensors. */ |
234 | res = msleep_interruptible((data->num_temp_sensors >= 0 ? |
235 | data->num_temp_sensors * 200 : |
236 | TEMP_COLLECTION_TIME)); |
237 | |
238 | /* done reading temperature sensors */ |
239 | cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); |
240 | cfg &= ~0x80; |
241 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg); |
242 | |
243 | /* restore pwm[1-4] config registers */ |
244 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(0), pwm_cfg[0]); |
245 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(2), pwm_cfg[1]); |
246 | |
247 | if (res) { |
248 | pr_err("ha ha, interrupted\n" ); |
249 | return -EAGAIN; |
250 | } |
251 | |
252 | /* Only count fans if we have to */ |
253 | if (data->num_temp_sensors >= 0) |
254 | return 0; |
255 | |
256 | for (i = 0; i < ADT7470_TEMP_COUNT; i++) { |
257 | data->temp[i] = i2c_smbus_read_byte_data(client, |
258 | ADT7470_TEMP_REG(i)); |
259 | if (data->temp[i]) |
260 | data->num_temp_sensors = i + 1; |
261 | } |
262 | data->temperatures_probed = 1; |
263 | return 0; |
264 | } |
265 | |
266 | static int adt7470_update_thread(void *p) |
267 | { |
268 | struct i2c_client *client = p; |
269 | struct adt7470_data *data = i2c_get_clientdata(client); |
270 | |
271 | while (!kthread_should_stop()) { |
272 | mutex_lock(&data->lock); |
273 | adt7470_read_temperatures(client, data); |
274 | mutex_unlock(&data->lock); |
275 | |
276 | set_current_state(TASK_INTERRUPTIBLE); |
277 | if (kthread_should_stop()) |
278 | break; |
279 | |
280 | schedule_timeout(msecs_to_jiffies(data->auto_update_interval)); |
281 | } |
282 | |
283 | return 0; |
284 | } |
285 | |
286 | static struct adt7470_data *adt7470_update_device(struct device *dev) |
287 | { |
288 | struct adt7470_data *data = dev_get_drvdata(dev); |
289 | struct i2c_client *client = data->client; |
290 | unsigned long local_jiffies = jiffies; |
291 | u8 cfg; |
292 | int i; |
293 | int need_sensors = 1; |
294 | int need_limits = 1; |
295 | |
296 | /* |
297 | * Figure out if we need to update the shadow registers. |
298 | * Lockless means that we may occasionally report out of |
299 | * date data. |
300 | */ |
301 | if (time_before(local_jiffies, data->sensors_last_updated + |
302 | SENSOR_REFRESH_INTERVAL) && |
303 | data->sensors_valid) |
304 | need_sensors = 0; |
305 | |
306 | if (time_before(local_jiffies, data->limits_last_updated + |
307 | LIMIT_REFRESH_INTERVAL) && |
308 | data->limits_valid) |
309 | need_limits = 0; |
310 | |
311 | if (!need_sensors && !need_limits) |
312 | return data; |
313 | |
314 | mutex_lock(&data->lock); |
315 | if (!need_sensors) |
316 | goto no_sensor_update; |
317 | |
318 | if (!data->temperatures_probed) |
319 | adt7470_read_temperatures(client, data); |
320 | else |
321 | for (i = 0; i < ADT7470_TEMP_COUNT; i++) |
322 | data->temp[i] = i2c_smbus_read_byte_data(client, |
323 | ADT7470_TEMP_REG(i)); |
324 | |
325 | for (i = 0; i < ADT7470_FAN_COUNT; i++) |
326 | data->fan[i] = adt7470_read_word_data(client, |
327 | ADT7470_REG_FAN(i)); |
328 | |
329 | for (i = 0; i < ADT7470_PWM_COUNT; i++) { |
330 | int reg; |
331 | int reg_mask; |
332 | |
333 | data->pwm[i] = i2c_smbus_read_byte_data(client, |
334 | ADT7470_REG_PWM(i)); |
335 | |
336 | if (i % 2) |
337 | reg_mask = ADT7470_PWM2_AUTO_MASK; |
338 | else |
339 | reg_mask = ADT7470_PWM1_AUTO_MASK; |
340 | |
341 | reg = ADT7470_REG_PWM_CFG(i); |
342 | if (i2c_smbus_read_byte_data(client, reg) & reg_mask) |
343 | data->pwm_automatic[i] = 1; |
344 | else |
345 | data->pwm_automatic[i] = 0; |
346 | |
347 | reg = ADT7470_REG_PWM_AUTO_TEMP(i); |
348 | cfg = i2c_smbus_read_byte_data(client, reg); |
349 | if (!(i % 2)) |
350 | data->pwm_auto_temp[i] = cfg >> 4; |
351 | else |
352 | data->pwm_auto_temp[i] = cfg & 0xF; |
353 | } |
354 | |
355 | if (i2c_smbus_read_byte_data(client, ADT7470_REG_CFG) & |
356 | ADT7470_FSPD_MASK) |
357 | data->force_pwm_max = 1; |
358 | else |
359 | data->force_pwm_max = 0; |
360 | |
361 | data->alarm = i2c_smbus_read_byte_data(client, ADT7470_REG_ALARM1); |
362 | if (data->alarm & ADT7470_OOL_ALARM) |
363 | data->alarm |= ALARM2(i2c_smbus_read_byte_data(client, |
364 | ADT7470_REG_ALARM2)); |
365 | data->alarms_mask = adt7470_read_word_data(client, |
366 | ADT7470_REG_ALARM1_MASK); |
367 | |
368 | data->sensors_last_updated = local_jiffies; |
369 | data->sensors_valid = 1; |
370 | |
371 | no_sensor_update: |
372 | if (!need_limits) |
373 | goto out; |
374 | |
375 | for (i = 0; i < ADT7470_TEMP_COUNT; i++) { |
376 | data->temp_min[i] = i2c_smbus_read_byte_data(client, |
377 | ADT7470_TEMP_MIN_REG(i)); |
378 | data->temp_max[i] = i2c_smbus_read_byte_data(client, |
379 | ADT7470_TEMP_MAX_REG(i)); |
380 | } |
381 | |
382 | for (i = 0; i < ADT7470_FAN_COUNT; i++) { |
383 | data->fan_min[i] = adt7470_read_word_data(client, |
384 | ADT7470_REG_FAN_MIN(i)); |
385 | data->fan_max[i] = adt7470_read_word_data(client, |
386 | ADT7470_REG_FAN_MAX(i)); |
387 | } |
388 | |
389 | for (i = 0; i < ADT7470_PWM_COUNT; i++) { |
390 | data->pwm_max[i] = i2c_smbus_read_byte_data(client, |
391 | ADT7470_REG_PWM_MAX(i)); |
392 | data->pwm_min[i] = i2c_smbus_read_byte_data(client, |
393 | ADT7470_REG_PWM_MIN(i)); |
394 | data->pwm_tmin[i] = i2c_smbus_read_byte_data(client, |
395 | ADT7470_REG_PWM_TMIN(i)); |
396 | } |
397 | |
398 | data->limits_last_updated = local_jiffies; |
399 | data->limits_valid = 1; |
400 | |
401 | out: |
402 | mutex_unlock(&data->lock); |
403 | return data; |
404 | } |
405 | |
406 | static ssize_t auto_update_interval_show(struct device *dev, |
407 | struct device_attribute *devattr, |
408 | char *buf) |
409 | { |
410 | struct adt7470_data *data = adt7470_update_device(dev); |
411 | return sprintf(buf, "%d\n" , data->auto_update_interval); |
412 | } |
413 | |
414 | static ssize_t auto_update_interval_store(struct device *dev, |
415 | struct device_attribute *devattr, |
416 | const char *buf, size_t count) |
417 | { |
418 | struct adt7470_data *data = dev_get_drvdata(dev); |
419 | long temp; |
420 | |
421 | if (kstrtol(buf, 10, &temp)) |
422 | return -EINVAL; |
423 | |
424 | temp = clamp_val(temp, 0, 60000); |
425 | |
426 | mutex_lock(&data->lock); |
427 | data->auto_update_interval = temp; |
428 | mutex_unlock(&data->lock); |
429 | |
430 | return count; |
431 | } |
432 | |
433 | static ssize_t num_temp_sensors_show(struct device *dev, |
434 | struct device_attribute *devattr, |
435 | char *buf) |
436 | { |
437 | struct adt7470_data *data = adt7470_update_device(dev); |
438 | return sprintf(buf, "%d\n" , data->num_temp_sensors); |
439 | } |
440 | |
441 | static ssize_t num_temp_sensors_store(struct device *dev, |
442 | struct device_attribute *devattr, |
443 | const char *buf, size_t count) |
444 | { |
445 | struct adt7470_data *data = dev_get_drvdata(dev); |
446 | long temp; |
447 | |
448 | if (kstrtol(buf, 10, &temp)) |
449 | return -EINVAL; |
450 | |
451 | temp = clamp_val(temp, -1, 10); |
452 | |
453 | mutex_lock(&data->lock); |
454 | data->num_temp_sensors = temp; |
455 | if (temp < 0) |
456 | data->temperatures_probed = 0; |
457 | mutex_unlock(&data->lock); |
458 | |
459 | return count; |
460 | } |
461 | |
462 | static ssize_t temp_min_show(struct device *dev, |
463 | struct device_attribute *devattr, char *buf) |
464 | { |
465 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
466 | struct adt7470_data *data = adt7470_update_device(dev); |
467 | return sprintf(buf, "%d\n" , 1000 * data->temp_min[attr->index]); |
468 | } |
469 | |
470 | static ssize_t temp_min_store(struct device *dev, |
471 | struct device_attribute *devattr, |
472 | const char *buf, size_t count) |
473 | { |
474 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
475 | struct adt7470_data *data = dev_get_drvdata(dev); |
476 | struct i2c_client *client = data->client; |
477 | long temp; |
478 | |
479 | if (kstrtol(buf, 10, &temp)) |
480 | return -EINVAL; |
481 | |
482 | temp = clamp_val(temp, -128000, 127000); |
483 | temp = DIV_ROUND_CLOSEST(temp, 1000); |
484 | |
485 | mutex_lock(&data->lock); |
486 | data->temp_min[attr->index] = temp; |
487 | i2c_smbus_write_byte_data(client, ADT7470_TEMP_MIN_REG(attr->index), |
488 | temp); |
489 | mutex_unlock(&data->lock); |
490 | |
491 | return count; |
492 | } |
493 | |
494 | static ssize_t temp_max_show(struct device *dev, |
495 | struct device_attribute *devattr, char *buf) |
496 | { |
497 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
498 | struct adt7470_data *data = adt7470_update_device(dev); |
499 | return sprintf(buf, "%d\n" , 1000 * data->temp_max[attr->index]); |
500 | } |
501 | |
502 | static ssize_t temp_max_store(struct device *dev, |
503 | struct device_attribute *devattr, |
504 | const char *buf, size_t count) |
505 | { |
506 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
507 | struct adt7470_data *data = dev_get_drvdata(dev); |
508 | struct i2c_client *client = data->client; |
509 | long temp; |
510 | |
511 | if (kstrtol(buf, 10, &temp)) |
512 | return -EINVAL; |
513 | |
514 | temp = clamp_val(temp, -128000, 127000); |
515 | temp = DIV_ROUND_CLOSEST(temp, 1000); |
516 | |
517 | mutex_lock(&data->lock); |
518 | data->temp_max[attr->index] = temp; |
519 | i2c_smbus_write_byte_data(client, ADT7470_TEMP_MAX_REG(attr->index), |
520 | temp); |
521 | mutex_unlock(&data->lock); |
522 | |
523 | return count; |
524 | } |
525 | |
526 | static ssize_t temp_show(struct device *dev, struct device_attribute *devattr, |
527 | char *buf) |
528 | { |
529 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
530 | struct adt7470_data *data = adt7470_update_device(dev); |
531 | return sprintf(buf, "%d\n" , 1000 * data->temp[attr->index]); |
532 | } |
533 | |
534 | static ssize_t alarm_mask_show(struct device *dev, |
535 | struct device_attribute *devattr, |
536 | char *buf) |
537 | { |
538 | struct adt7470_data *data = adt7470_update_device(dev); |
539 | |
540 | return sprintf(buf, "%x\n" , data->alarms_mask); |
541 | } |
542 | |
543 | static ssize_t alarm_mask_store(struct device *dev, |
544 | struct device_attribute *devattr, |
545 | const char *buf, size_t count) |
546 | { |
547 | struct adt7470_data *data = dev_get_drvdata(dev); |
548 | long mask; |
549 | |
550 | if (kstrtoul(buf, 0, &mask)) |
551 | return -EINVAL; |
552 | |
553 | if (mask & ~0xffff) |
554 | return -EINVAL; |
555 | |
556 | mutex_lock(&data->lock); |
557 | data->alarms_mask = mask; |
558 | adt7470_write_word_data(data->client, ADT7470_REG_ALARM1_MASK, mask); |
559 | mutex_unlock(&data->lock); |
560 | |
561 | return count; |
562 | } |
563 | |
564 | static ssize_t fan_max_show(struct device *dev, |
565 | struct device_attribute *devattr, char *buf) |
566 | { |
567 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
568 | struct adt7470_data *data = adt7470_update_device(dev); |
569 | |
570 | if (FAN_DATA_VALID(data->fan_max[attr->index])) |
571 | return sprintf(buf, "%d\n" , |
572 | FAN_PERIOD_TO_RPM(data->fan_max[attr->index])); |
573 | else |
574 | return sprintf(buf, "0\n" ); |
575 | } |
576 | |
577 | static ssize_t fan_max_store(struct device *dev, |
578 | struct device_attribute *devattr, |
579 | const char *buf, size_t count) |
580 | { |
581 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
582 | struct adt7470_data *data = dev_get_drvdata(dev); |
583 | struct i2c_client *client = data->client; |
584 | long temp; |
585 | |
586 | if (kstrtol(buf, 10, &temp) || !temp) |
587 | return -EINVAL; |
588 | |
589 | temp = FAN_RPM_TO_PERIOD(temp); |
590 | temp = clamp_val(temp, 1, 65534); |
591 | |
592 | mutex_lock(&data->lock); |
593 | data->fan_max[attr->index] = temp; |
594 | adt7470_write_word_data(client, ADT7470_REG_FAN_MAX(attr->index), temp); |
595 | mutex_unlock(&data->lock); |
596 | |
597 | return count; |
598 | } |
599 | |
600 | static ssize_t fan_min_show(struct device *dev, |
601 | struct device_attribute *devattr, char *buf) |
602 | { |
603 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
604 | struct adt7470_data *data = adt7470_update_device(dev); |
605 | |
606 | if (FAN_DATA_VALID(data->fan_min[attr->index])) |
607 | return sprintf(buf, "%d\n" , |
608 | FAN_PERIOD_TO_RPM(data->fan_min[attr->index])); |
609 | else |
610 | return sprintf(buf, "0\n" ); |
611 | } |
612 | |
613 | static ssize_t fan_min_store(struct device *dev, |
614 | struct device_attribute *devattr, |
615 | const char *buf, size_t count) |
616 | { |
617 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
618 | struct adt7470_data *data = dev_get_drvdata(dev); |
619 | struct i2c_client *client = data->client; |
620 | long temp; |
621 | |
622 | if (kstrtol(buf, 10, &temp) || !temp) |
623 | return -EINVAL; |
624 | |
625 | temp = FAN_RPM_TO_PERIOD(temp); |
626 | temp = clamp_val(temp, 1, 65534); |
627 | |
628 | mutex_lock(&data->lock); |
629 | data->fan_min[attr->index] = temp; |
630 | adt7470_write_word_data(client, ADT7470_REG_FAN_MIN(attr->index), temp); |
631 | mutex_unlock(&data->lock); |
632 | |
633 | return count; |
634 | } |
635 | |
636 | static ssize_t fan_show(struct device *dev, struct device_attribute *devattr, |
637 | char *buf) |
638 | { |
639 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
640 | struct adt7470_data *data = adt7470_update_device(dev); |
641 | |
642 | if (FAN_DATA_VALID(data->fan[attr->index])) |
643 | return sprintf(buf, "%d\n" , |
644 | FAN_PERIOD_TO_RPM(data->fan[attr->index])); |
645 | else |
646 | return sprintf(buf, "0\n" ); |
647 | } |
648 | |
649 | static ssize_t force_pwm_max_show(struct device *dev, |
650 | struct device_attribute *devattr, char *buf) |
651 | { |
652 | struct adt7470_data *data = adt7470_update_device(dev); |
653 | return sprintf(buf, "%d\n" , data->force_pwm_max); |
654 | } |
655 | |
656 | static ssize_t force_pwm_max_store(struct device *dev, |
657 | struct device_attribute *devattr, |
658 | const char *buf, size_t count) |
659 | { |
660 | struct adt7470_data *data = dev_get_drvdata(dev); |
661 | struct i2c_client *client = data->client; |
662 | long temp; |
663 | u8 reg; |
664 | |
665 | if (kstrtol(buf, 10, &temp)) |
666 | return -EINVAL; |
667 | |
668 | mutex_lock(&data->lock); |
669 | data->force_pwm_max = temp; |
670 | reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); |
671 | if (temp) |
672 | reg |= ADT7470_FSPD_MASK; |
673 | else |
674 | reg &= ~ADT7470_FSPD_MASK; |
675 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg); |
676 | mutex_unlock(&data->lock); |
677 | |
678 | return count; |
679 | } |
680 | |
681 | static ssize_t pwm_show(struct device *dev, struct device_attribute *devattr, |
682 | char *buf) |
683 | { |
684 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
685 | struct adt7470_data *data = adt7470_update_device(dev); |
686 | return sprintf(buf, "%d\n" , data->pwm[attr->index]); |
687 | } |
688 | |
689 | static ssize_t pwm_store(struct device *dev, struct device_attribute *devattr, |
690 | const char *buf, size_t count) |
691 | { |
692 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
693 | struct adt7470_data *data = dev_get_drvdata(dev); |
694 | struct i2c_client *client = data->client; |
695 | long temp; |
696 | |
697 | if (kstrtol(buf, 10, &temp)) |
698 | return -EINVAL; |
699 | |
700 | temp = clamp_val(temp, 0, 255); |
701 | |
702 | mutex_lock(&data->lock); |
703 | data->pwm[attr->index] = temp; |
704 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(attr->index), temp); |
705 | mutex_unlock(&data->lock); |
706 | |
707 | return count; |
708 | } |
709 | |
710 | /* These are the valid PWM frequencies to the nearest Hz */ |
711 | static const int adt7470_freq_map[] = { |
712 | 11, 15, 22, 29, 35, 44, 59, 88, 1400, 22500 |
713 | }; |
714 | |
715 | static ssize_t pwm1_freq_show(struct device *dev, |
716 | struct device_attribute *devattr, char *buf) |
717 | { |
718 | struct adt7470_data *data = adt7470_update_device(dev); |
719 | unsigned char cfg_reg_1; |
720 | unsigned char cfg_reg_2; |
721 | int index; |
722 | |
723 | mutex_lock(&data->lock); |
724 | cfg_reg_1 = i2c_smbus_read_byte_data(data->client, ADT7470_REG_CFG); |
725 | cfg_reg_2 = i2c_smbus_read_byte_data(data->client, ADT7470_REG_CFG_2); |
726 | mutex_unlock(&data->lock); |
727 | |
728 | index = (cfg_reg_2 & ADT7470_FREQ_MASK) >> ADT7470_FREQ_SHIFT; |
729 | if (!(cfg_reg_1 & ADT7470_CFG_LF)) |
730 | index += 8; |
731 | if (index >= ARRAY_SIZE(adt7470_freq_map)) |
732 | index = ARRAY_SIZE(adt7470_freq_map) - 1; |
733 | |
734 | return scnprintf(buf, PAGE_SIZE, "%d\n" , adt7470_freq_map[index]); |
735 | } |
736 | |
737 | static ssize_t pwm1_freq_store(struct device *dev, |
738 | struct device_attribute *devattr, |
739 | const char *buf, size_t count) |
740 | { |
741 | struct adt7470_data *data = dev_get_drvdata(dev); |
742 | struct i2c_client *client = data->client; |
743 | long freq; |
744 | int index; |
745 | int low_freq = ADT7470_CFG_LF; |
746 | unsigned char val; |
747 | |
748 | if (kstrtol(buf, 10, &freq)) |
749 | return -EINVAL; |
750 | |
751 | /* Round the user value given to the closest available frequency */ |
752 | index = find_closest(freq, adt7470_freq_map, |
753 | ARRAY_SIZE(adt7470_freq_map)); |
754 | |
755 | if (index >= 8) { |
756 | index -= 8; |
757 | low_freq = 0; |
758 | } |
759 | |
760 | mutex_lock(&data->lock); |
761 | /* Configuration Register 1 */ |
762 | val = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); |
763 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, |
764 | (val & ~ADT7470_CFG_LF) | low_freq); |
765 | /* Configuration Register 2 */ |
766 | val = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG_2); |
767 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG_2, |
768 | (val & ~ADT7470_FREQ_MASK) | (index << ADT7470_FREQ_SHIFT)); |
769 | mutex_unlock(&data->lock); |
770 | |
771 | return count; |
772 | } |
773 | |
774 | static ssize_t pwm_max_show(struct device *dev, |
775 | struct device_attribute *devattr, char *buf) |
776 | { |
777 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
778 | struct adt7470_data *data = adt7470_update_device(dev); |
779 | return sprintf(buf, "%d\n" , data->pwm_max[attr->index]); |
780 | } |
781 | |
782 | static ssize_t pwm_max_store(struct device *dev, |
783 | struct device_attribute *devattr, |
784 | const char *buf, size_t count) |
785 | { |
786 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
787 | struct adt7470_data *data = dev_get_drvdata(dev); |
788 | struct i2c_client *client = data->client; |
789 | long temp; |
790 | |
791 | if (kstrtol(buf, 10, &temp)) |
792 | return -EINVAL; |
793 | |
794 | temp = clamp_val(temp, 0, 255); |
795 | |
796 | mutex_lock(&data->lock); |
797 | data->pwm_max[attr->index] = temp; |
798 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MAX(attr->index), |
799 | temp); |
800 | mutex_unlock(&data->lock); |
801 | |
802 | return count; |
803 | } |
804 | |
805 | static ssize_t pwm_min_show(struct device *dev, |
806 | struct device_attribute *devattr, char *buf) |
807 | { |
808 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
809 | struct adt7470_data *data = adt7470_update_device(dev); |
810 | return sprintf(buf, "%d\n" , data->pwm_min[attr->index]); |
811 | } |
812 | |
813 | static ssize_t pwm_min_store(struct device *dev, |
814 | struct device_attribute *devattr, |
815 | const char *buf, size_t count) |
816 | { |
817 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
818 | struct adt7470_data *data = dev_get_drvdata(dev); |
819 | struct i2c_client *client = data->client; |
820 | long temp; |
821 | |
822 | if (kstrtol(buf, 10, &temp)) |
823 | return -EINVAL; |
824 | |
825 | temp = clamp_val(temp, 0, 255); |
826 | |
827 | mutex_lock(&data->lock); |
828 | data->pwm_min[attr->index] = temp; |
829 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MIN(attr->index), |
830 | temp); |
831 | mutex_unlock(&data->lock); |
832 | |
833 | return count; |
834 | } |
835 | |
836 | static ssize_t pwm_tmax_show(struct device *dev, |
837 | struct device_attribute *devattr, char *buf) |
838 | { |
839 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
840 | struct adt7470_data *data = adt7470_update_device(dev); |
841 | /* the datasheet says that tmax = tmin + 20C */ |
842 | return sprintf(buf, "%d\n" , 1000 * (20 + data->pwm_tmin[attr->index])); |
843 | } |
844 | |
845 | static ssize_t pwm_tmin_show(struct device *dev, |
846 | struct device_attribute *devattr, char *buf) |
847 | { |
848 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
849 | struct adt7470_data *data = adt7470_update_device(dev); |
850 | return sprintf(buf, "%d\n" , 1000 * data->pwm_tmin[attr->index]); |
851 | } |
852 | |
853 | static ssize_t pwm_tmin_store(struct device *dev, |
854 | struct device_attribute *devattr, |
855 | const char *buf, size_t count) |
856 | { |
857 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
858 | struct adt7470_data *data = dev_get_drvdata(dev); |
859 | struct i2c_client *client = data->client; |
860 | long temp; |
861 | |
862 | if (kstrtol(buf, 10, &temp)) |
863 | return -EINVAL; |
864 | |
865 | temp = clamp_val(temp, -128000, 127000); |
866 | temp = DIV_ROUND_CLOSEST(temp, 1000); |
867 | |
868 | mutex_lock(&data->lock); |
869 | data->pwm_tmin[attr->index] = temp; |
870 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_TMIN(attr->index), |
871 | temp); |
872 | mutex_unlock(&data->lock); |
873 | |
874 | return count; |
875 | } |
876 | |
877 | static ssize_t pwm_auto_show(struct device *dev, |
878 | struct device_attribute *devattr, char *buf) |
879 | { |
880 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
881 | struct adt7470_data *data = adt7470_update_device(dev); |
882 | return sprintf(buf, "%d\n" , 1 + data->pwm_automatic[attr->index]); |
883 | } |
884 | |
885 | static ssize_t pwm_auto_store(struct device *dev, |
886 | struct device_attribute *devattr, |
887 | const char *buf, size_t count) |
888 | { |
889 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
890 | struct adt7470_data *data = dev_get_drvdata(dev); |
891 | struct i2c_client *client = data->client; |
892 | int pwm_auto_reg = ADT7470_REG_PWM_CFG(attr->index); |
893 | int pwm_auto_reg_mask; |
894 | long temp; |
895 | u8 reg; |
896 | |
897 | if (kstrtol(buf, 10, &temp)) |
898 | return -EINVAL; |
899 | |
900 | if (attr->index % 2) |
901 | pwm_auto_reg_mask = ADT7470_PWM2_AUTO_MASK; |
902 | else |
903 | pwm_auto_reg_mask = ADT7470_PWM1_AUTO_MASK; |
904 | |
905 | if (temp != 2 && temp != 1) |
906 | return -EINVAL; |
907 | temp--; |
908 | |
909 | mutex_lock(&data->lock); |
910 | data->pwm_automatic[attr->index] = temp; |
911 | reg = i2c_smbus_read_byte_data(client, pwm_auto_reg); |
912 | if (temp) |
913 | reg |= pwm_auto_reg_mask; |
914 | else |
915 | reg &= ~pwm_auto_reg_mask; |
916 | i2c_smbus_write_byte_data(client, pwm_auto_reg, reg); |
917 | mutex_unlock(&data->lock); |
918 | |
919 | return count; |
920 | } |
921 | |
922 | static ssize_t pwm_auto_temp_show(struct device *dev, |
923 | struct device_attribute *devattr, char *buf) |
924 | { |
925 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
926 | struct adt7470_data *data = adt7470_update_device(dev); |
927 | u8 ctrl = data->pwm_auto_temp[attr->index]; |
928 | |
929 | if (ctrl) |
930 | return sprintf(buf, "%d\n" , 1 << (ctrl - 1)); |
931 | else |
932 | return sprintf(buf, "%d\n" , ADT7470_PWM_ALL_TEMPS); |
933 | } |
934 | |
935 | static int cvt_auto_temp(int input) |
936 | { |
937 | if (input == ADT7470_PWM_ALL_TEMPS) |
938 | return 0; |
939 | if (input < 1 || !is_power_of_2(input)) |
940 | return -EINVAL; |
941 | return ilog2(input) + 1; |
942 | } |
943 | |
944 | static ssize_t pwm_auto_temp_store(struct device *dev, |
945 | struct device_attribute *devattr, |
946 | const char *buf, size_t count) |
947 | { |
948 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
949 | struct adt7470_data *data = dev_get_drvdata(dev); |
950 | struct i2c_client *client = data->client; |
951 | int pwm_auto_reg = ADT7470_REG_PWM_AUTO_TEMP(attr->index); |
952 | long temp; |
953 | u8 reg; |
954 | |
955 | if (kstrtol(buf, 10, &temp)) |
956 | return -EINVAL; |
957 | |
958 | temp = cvt_auto_temp(temp); |
959 | if (temp < 0) |
960 | return temp; |
961 | |
962 | mutex_lock(&data->lock); |
963 | data->pwm_automatic[attr->index] = temp; |
964 | reg = i2c_smbus_read_byte_data(client, pwm_auto_reg); |
965 | |
966 | if (!(attr->index % 2)) { |
967 | reg &= 0xF; |
968 | reg |= (temp << 4) & 0xF0; |
969 | } else { |
970 | reg &= 0xF0; |
971 | reg |= temp & 0xF; |
972 | } |
973 | |
974 | i2c_smbus_write_byte_data(client, pwm_auto_reg, reg); |
975 | mutex_unlock(&data->lock); |
976 | |
977 | return count; |
978 | } |
979 | |
980 | static ssize_t alarm_show(struct device *dev, |
981 | struct device_attribute *devattr, char *buf) |
982 | { |
983 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
984 | struct adt7470_data *data = adt7470_update_device(dev); |
985 | |
986 | if (data->alarm & attr->index) |
987 | return sprintf(buf, "1\n" ); |
988 | else |
989 | return sprintf(buf, "0\n" ); |
990 | } |
991 | |
992 | static DEVICE_ATTR_RW(alarm_mask); |
993 | static DEVICE_ATTR_RW(num_temp_sensors); |
994 | static DEVICE_ATTR_RW(auto_update_interval); |
995 | |
996 | static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0); |
997 | static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1); |
998 | static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2); |
999 | static SENSOR_DEVICE_ATTR_RW(temp4_max, temp_max, 3); |
1000 | static SENSOR_DEVICE_ATTR_RW(temp5_max, temp_max, 4); |
1001 | static SENSOR_DEVICE_ATTR_RW(temp6_max, temp_max, 5); |
1002 | static SENSOR_DEVICE_ATTR_RW(temp7_max, temp_max, 6); |
1003 | static SENSOR_DEVICE_ATTR_RW(temp8_max, temp_max, 7); |
1004 | static SENSOR_DEVICE_ATTR_RW(temp9_max, temp_max, 8); |
1005 | static SENSOR_DEVICE_ATTR_RW(temp10_max, temp_max, 9); |
1006 | |
1007 | static SENSOR_DEVICE_ATTR_RW(temp1_min, temp_min, 0); |
1008 | static SENSOR_DEVICE_ATTR_RW(temp2_min, temp_min, 1); |
1009 | static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_min, 2); |
1010 | static SENSOR_DEVICE_ATTR_RW(temp4_min, temp_min, 3); |
1011 | static SENSOR_DEVICE_ATTR_RW(temp5_min, temp_min, 4); |
1012 | static SENSOR_DEVICE_ATTR_RW(temp6_min, temp_min, 5); |
1013 | static SENSOR_DEVICE_ATTR_RW(temp7_min, temp_min, 6); |
1014 | static SENSOR_DEVICE_ATTR_RW(temp8_min, temp_min, 7); |
1015 | static SENSOR_DEVICE_ATTR_RW(temp9_min, temp_min, 8); |
1016 | static SENSOR_DEVICE_ATTR_RW(temp10_min, temp_min, 9); |
1017 | |
1018 | static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0); |
1019 | static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1); |
1020 | static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2); |
1021 | static SENSOR_DEVICE_ATTR_RO(temp4_input, temp, 3); |
1022 | static SENSOR_DEVICE_ATTR_RO(temp5_input, temp, 4); |
1023 | static SENSOR_DEVICE_ATTR_RO(temp6_input, temp, 5); |
1024 | static SENSOR_DEVICE_ATTR_RO(temp7_input, temp, 6); |
1025 | static SENSOR_DEVICE_ATTR_RO(temp8_input, temp, 7); |
1026 | static SENSOR_DEVICE_ATTR_RO(temp9_input, temp, 8); |
1027 | static SENSOR_DEVICE_ATTR_RO(temp10_input, temp, 9); |
1028 | |
1029 | static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, ADT7470_R1T_ALARM); |
1030 | static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, ADT7470_R2T_ALARM); |
1031 | static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, ADT7470_R3T_ALARM); |
1032 | static SENSOR_DEVICE_ATTR_RO(temp4_alarm, alarm, ADT7470_R4T_ALARM); |
1033 | static SENSOR_DEVICE_ATTR_RO(temp5_alarm, alarm, ADT7470_R5T_ALARM); |
1034 | static SENSOR_DEVICE_ATTR_RO(temp6_alarm, alarm, ADT7470_R6T_ALARM); |
1035 | static SENSOR_DEVICE_ATTR_RO(temp7_alarm, alarm, ADT7470_R7T_ALARM); |
1036 | static SENSOR_DEVICE_ATTR_RO(temp8_alarm, alarm, ALARM2(ADT7470_R8T_ALARM)); |
1037 | static SENSOR_DEVICE_ATTR_RO(temp9_alarm, alarm, ALARM2(ADT7470_R9T_ALARM)); |
1038 | static SENSOR_DEVICE_ATTR_RO(temp10_alarm, alarm, ALARM2(ADT7470_R10T_ALARM)); |
1039 | |
1040 | static SENSOR_DEVICE_ATTR_RW(fan1_max, fan_max, 0); |
1041 | static SENSOR_DEVICE_ATTR_RW(fan2_max, fan_max, 1); |
1042 | static SENSOR_DEVICE_ATTR_RW(fan3_max, fan_max, 2); |
1043 | static SENSOR_DEVICE_ATTR_RW(fan4_max, fan_max, 3); |
1044 | |
1045 | static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); |
1046 | static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); |
1047 | static SENSOR_DEVICE_ATTR_RW(fan3_min, fan_min, 2); |
1048 | static SENSOR_DEVICE_ATTR_RW(fan4_min, fan_min, 3); |
1049 | |
1050 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0); |
1051 | static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1); |
1052 | static SENSOR_DEVICE_ATTR_RO(fan3_input, fan, 2); |
1053 | static SENSOR_DEVICE_ATTR_RO(fan4_input, fan, 3); |
1054 | |
1055 | static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, ALARM2(ADT7470_FAN1_ALARM)); |
1056 | static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, ALARM2(ADT7470_FAN2_ALARM)); |
1057 | static SENSOR_DEVICE_ATTR_RO(fan3_alarm, alarm, ALARM2(ADT7470_FAN3_ALARM)); |
1058 | static SENSOR_DEVICE_ATTR_RO(fan4_alarm, alarm, ALARM2(ADT7470_FAN4_ALARM)); |
1059 | |
1060 | static SENSOR_DEVICE_ATTR_RW(force_pwm_max, force_pwm_max, 0); |
1061 | |
1062 | static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0); |
1063 | static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1); |
1064 | static SENSOR_DEVICE_ATTR_RW(pwm3, pwm, 2); |
1065 | static SENSOR_DEVICE_ATTR_RW(pwm4, pwm, 3); |
1066 | |
1067 | static DEVICE_ATTR_RW(pwm1_freq); |
1068 | |
1069 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point1_pwm, pwm_min, 0); |
1070 | static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point1_pwm, pwm_min, 1); |
1071 | static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point1_pwm, pwm_min, 2); |
1072 | static SENSOR_DEVICE_ATTR_RW(pwm4_auto_point1_pwm, pwm_min, 3); |
1073 | |
1074 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point2_pwm, pwm_max, 0); |
1075 | static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point2_pwm, pwm_max, 1); |
1076 | static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point2_pwm, pwm_max, 2); |
1077 | static SENSOR_DEVICE_ATTR_RW(pwm4_auto_point2_pwm, pwm_max, 3); |
1078 | |
1079 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point1_temp, pwm_tmin, 0); |
1080 | static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point1_temp, pwm_tmin, 1); |
1081 | static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point1_temp, pwm_tmin, 2); |
1082 | static SENSOR_DEVICE_ATTR_RW(pwm4_auto_point1_temp, pwm_tmin, 3); |
1083 | |
1084 | static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point2_temp, pwm_tmax, 0); |
1085 | static SENSOR_DEVICE_ATTR_RO(pwm2_auto_point2_temp, pwm_tmax, 1); |
1086 | static SENSOR_DEVICE_ATTR_RO(pwm3_auto_point2_temp, pwm_tmax, 2); |
1087 | static SENSOR_DEVICE_ATTR_RO(pwm4_auto_point2_temp, pwm_tmax, 3); |
1088 | |
1089 | static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm_auto, 0); |
1090 | static SENSOR_DEVICE_ATTR_RW(pwm2_enable, pwm_auto, 1); |
1091 | static SENSOR_DEVICE_ATTR_RW(pwm3_enable, pwm_auto, 2); |
1092 | static SENSOR_DEVICE_ATTR_RW(pwm4_enable, pwm_auto, 3); |
1093 | |
1094 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_channels_temp, pwm_auto_temp, 0); |
1095 | static SENSOR_DEVICE_ATTR_RW(pwm2_auto_channels_temp, pwm_auto_temp, 1); |
1096 | static SENSOR_DEVICE_ATTR_RW(pwm3_auto_channels_temp, pwm_auto_temp, 2); |
1097 | static SENSOR_DEVICE_ATTR_RW(pwm4_auto_channels_temp, pwm_auto_temp, 3); |
1098 | |
1099 | static struct attribute *adt7470_attrs[] = { |
1100 | &dev_attr_alarm_mask.attr, |
1101 | &dev_attr_num_temp_sensors.attr, |
1102 | &dev_attr_auto_update_interval.attr, |
1103 | &sensor_dev_attr_temp1_max.dev_attr.attr, |
1104 | &sensor_dev_attr_temp2_max.dev_attr.attr, |
1105 | &sensor_dev_attr_temp3_max.dev_attr.attr, |
1106 | &sensor_dev_attr_temp4_max.dev_attr.attr, |
1107 | &sensor_dev_attr_temp5_max.dev_attr.attr, |
1108 | &sensor_dev_attr_temp6_max.dev_attr.attr, |
1109 | &sensor_dev_attr_temp7_max.dev_attr.attr, |
1110 | &sensor_dev_attr_temp8_max.dev_attr.attr, |
1111 | &sensor_dev_attr_temp9_max.dev_attr.attr, |
1112 | &sensor_dev_attr_temp10_max.dev_attr.attr, |
1113 | &sensor_dev_attr_temp1_min.dev_attr.attr, |
1114 | &sensor_dev_attr_temp2_min.dev_attr.attr, |
1115 | &sensor_dev_attr_temp3_min.dev_attr.attr, |
1116 | &sensor_dev_attr_temp4_min.dev_attr.attr, |
1117 | &sensor_dev_attr_temp5_min.dev_attr.attr, |
1118 | &sensor_dev_attr_temp6_min.dev_attr.attr, |
1119 | &sensor_dev_attr_temp7_min.dev_attr.attr, |
1120 | &sensor_dev_attr_temp8_min.dev_attr.attr, |
1121 | &sensor_dev_attr_temp9_min.dev_attr.attr, |
1122 | &sensor_dev_attr_temp10_min.dev_attr.attr, |
1123 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
1124 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
1125 | &sensor_dev_attr_temp3_input.dev_attr.attr, |
1126 | &sensor_dev_attr_temp4_input.dev_attr.attr, |
1127 | &sensor_dev_attr_temp5_input.dev_attr.attr, |
1128 | &sensor_dev_attr_temp6_input.dev_attr.attr, |
1129 | &sensor_dev_attr_temp7_input.dev_attr.attr, |
1130 | &sensor_dev_attr_temp8_input.dev_attr.attr, |
1131 | &sensor_dev_attr_temp9_input.dev_attr.attr, |
1132 | &sensor_dev_attr_temp10_input.dev_attr.attr, |
1133 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
1134 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
1135 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
1136 | &sensor_dev_attr_temp4_alarm.dev_attr.attr, |
1137 | &sensor_dev_attr_temp5_alarm.dev_attr.attr, |
1138 | &sensor_dev_attr_temp6_alarm.dev_attr.attr, |
1139 | &sensor_dev_attr_temp7_alarm.dev_attr.attr, |
1140 | &sensor_dev_attr_temp8_alarm.dev_attr.attr, |
1141 | &sensor_dev_attr_temp9_alarm.dev_attr.attr, |
1142 | &sensor_dev_attr_temp10_alarm.dev_attr.attr, |
1143 | &sensor_dev_attr_fan1_max.dev_attr.attr, |
1144 | &sensor_dev_attr_fan2_max.dev_attr.attr, |
1145 | &sensor_dev_attr_fan3_max.dev_attr.attr, |
1146 | &sensor_dev_attr_fan4_max.dev_attr.attr, |
1147 | &sensor_dev_attr_fan1_min.dev_attr.attr, |
1148 | &sensor_dev_attr_fan2_min.dev_attr.attr, |
1149 | &sensor_dev_attr_fan3_min.dev_attr.attr, |
1150 | &sensor_dev_attr_fan4_min.dev_attr.attr, |
1151 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
1152 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
1153 | &sensor_dev_attr_fan3_input.dev_attr.attr, |
1154 | &sensor_dev_attr_fan4_input.dev_attr.attr, |
1155 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
1156 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
1157 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, |
1158 | &sensor_dev_attr_fan4_alarm.dev_attr.attr, |
1159 | &sensor_dev_attr_force_pwm_max.dev_attr.attr, |
1160 | &sensor_dev_attr_pwm1.dev_attr.attr, |
1161 | &dev_attr_pwm1_freq.attr, |
1162 | &sensor_dev_attr_pwm2.dev_attr.attr, |
1163 | &sensor_dev_attr_pwm3.dev_attr.attr, |
1164 | &sensor_dev_attr_pwm4.dev_attr.attr, |
1165 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, |
1166 | &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, |
1167 | &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, |
1168 | &sensor_dev_attr_pwm4_auto_point1_pwm.dev_attr.attr, |
1169 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, |
1170 | &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, |
1171 | &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, |
1172 | &sensor_dev_attr_pwm4_auto_point2_pwm.dev_attr.attr, |
1173 | &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, |
1174 | &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, |
1175 | &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr, |
1176 | &sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr, |
1177 | &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, |
1178 | &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, |
1179 | &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr, |
1180 | &sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.attr, |
1181 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
1182 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, |
1183 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, |
1184 | &sensor_dev_attr_pwm4_enable.dev_attr.attr, |
1185 | &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, |
1186 | &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, |
1187 | &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, |
1188 | &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr, |
1189 | NULL |
1190 | }; |
1191 | |
1192 | ATTRIBUTE_GROUPS(adt7470); |
1193 | |
1194 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
1195 | static int adt7470_detect(struct i2c_client *client, |
1196 | struct i2c_board_info *info) |
1197 | { |
1198 | struct i2c_adapter *adapter = client->adapter; |
1199 | int vendor, device, revision; |
1200 | |
1201 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
1202 | return -ENODEV; |
1203 | |
1204 | vendor = i2c_smbus_read_byte_data(client, ADT7470_REG_VENDOR); |
1205 | if (vendor != ADT7470_VENDOR) |
1206 | return -ENODEV; |
1207 | |
1208 | device = i2c_smbus_read_byte_data(client, ADT7470_REG_DEVICE); |
1209 | if (device != ADT7470_DEVICE) |
1210 | return -ENODEV; |
1211 | |
1212 | revision = i2c_smbus_read_byte_data(client, ADT7470_REG_REVISION); |
1213 | if (revision != ADT7470_REVISION) |
1214 | return -ENODEV; |
1215 | |
1216 | strlcpy(info->type, "adt7470" , I2C_NAME_SIZE); |
1217 | |
1218 | return 0; |
1219 | } |
1220 | |
1221 | static void adt7470_init_client(struct i2c_client *client) |
1222 | { |
1223 | int reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); |
1224 | |
1225 | if (reg < 0) { |
1226 | dev_err(&client->dev, "cannot read configuration register\n" ); |
1227 | } else { |
1228 | /* start monitoring (and do a self-test) */ |
1229 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg | 3); |
1230 | } |
1231 | } |
1232 | |
1233 | static int adt7470_probe(struct i2c_client *client, |
1234 | const struct i2c_device_id *id) |
1235 | { |
1236 | struct device *dev = &client->dev; |
1237 | struct adt7470_data *data; |
1238 | struct device *hwmon_dev; |
1239 | |
1240 | data = devm_kzalloc(dev, sizeof(struct adt7470_data), GFP_KERNEL); |
1241 | if (!data) |
1242 | return -ENOMEM; |
1243 | |
1244 | data->num_temp_sensors = -1; |
1245 | data->auto_update_interval = AUTO_UPDATE_INTERVAL; |
1246 | |
1247 | i2c_set_clientdata(client, data); |
1248 | data->client = client; |
1249 | mutex_init(&data->lock); |
1250 | |
1251 | dev_info(&client->dev, "%s chip found\n" , client->name); |
1252 | |
1253 | /* Initialize the ADT7470 chip */ |
1254 | adt7470_init_client(client); |
1255 | |
1256 | /* Register sysfs hooks */ |
1257 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
1258 | data, |
1259 | adt7470_groups); |
1260 | |
1261 | if (IS_ERR(hwmon_dev)) |
1262 | return PTR_ERR(hwmon_dev); |
1263 | |
1264 | data->auto_update = kthread_run(adt7470_update_thread, client, "%s" , |
1265 | dev_name(hwmon_dev)); |
1266 | if (IS_ERR(data->auto_update)) { |
1267 | return PTR_ERR(data->auto_update); |
1268 | } |
1269 | |
1270 | return 0; |
1271 | } |
1272 | |
1273 | static int adt7470_remove(struct i2c_client *client) |
1274 | { |
1275 | struct adt7470_data *data = i2c_get_clientdata(client); |
1276 | |
1277 | kthread_stop(data->auto_update); |
1278 | return 0; |
1279 | } |
1280 | |
1281 | static const struct i2c_device_id adt7470_id[] = { |
1282 | { "adt7470" , 0 }, |
1283 | { } |
1284 | }; |
1285 | MODULE_DEVICE_TABLE(i2c, adt7470_id); |
1286 | |
1287 | static struct i2c_driver adt7470_driver = { |
1288 | .class = I2C_CLASS_HWMON, |
1289 | .driver = { |
1290 | .name = "adt7470" , |
1291 | }, |
1292 | .probe = adt7470_probe, |
1293 | .remove = adt7470_remove, |
1294 | .id_table = adt7470_id, |
1295 | .detect = adt7470_detect, |
1296 | .address_list = normal_i2c, |
1297 | }; |
1298 | |
1299 | module_i2c_driver(adt7470_driver); |
1300 | |
1301 | MODULE_AUTHOR("Darrick J. Wong <darrick.wong@oracle.com>" ); |
1302 | MODULE_DESCRIPTION("ADT7470 driver" ); |
1303 | MODULE_LICENSE("GPL" ); |
1304 | |