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b5430a04 | 1 | /* |
ca3c7b63 GR |
2 | * amc6821.c - Part of lm_sensors, Linux kernel modules for hardware |
3 | * monitoring | |
4 | * Copyright (C) 2009 T. Mertelj <tomaz.mertelj@guest.arnes.si> | |
5 | * | |
6 | * Based on max6650.c: | |
7 | * Copyright (C) 2007 Hans J. Koch <hjk@hansjkoch.de> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | */ | |
b5430a04 TM |
23 | |
24 | ||
25 | #include <linux/kernel.h> /* Needed for KERN_INFO */ | |
26 | #include <linux/module.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/jiffies.h> | |
30 | #include <linux/i2c.h> | |
31 | #include <linux/hwmon.h> | |
32 | #include <linux/hwmon-sysfs.h> | |
33 | #include <linux/err.h> | |
34 | #include <linux/mutex.h> | |
35 | ||
36 | ||
37 | /* | |
38 | * Addresses to scan. | |
39 | */ | |
40 | ||
41 | static const unsigned short normal_i2c[] = {0x18, 0x19, 0x1a, 0x2c, 0x2d, 0x2e, | |
42 | 0x4c, 0x4d, 0x4e, I2C_CLIENT_END}; | |
43 | ||
44 | ||
45 | ||
46 | /* | |
47 | * Insmod parameters | |
48 | */ | |
49 | ||
a6bee4a5 | 50 | static int pwminv; /*Inverted PWM output. */ |
b5430a04 TM |
51 | module_param(pwminv, int, S_IRUGO); |
52 | ||
53 | static int init = 1; /*Power-on initialization.*/ | |
54 | module_param(init, int, S_IRUGO); | |
55 | ||
56 | ||
57 | enum chips { amc6821 }; | |
58 | ||
59 | #define AMC6821_REG_DEV_ID 0x3D | |
60 | #define AMC6821_REG_COMP_ID 0x3E | |
61 | #define AMC6821_REG_CONF1 0x00 | |
62 | #define AMC6821_REG_CONF2 0x01 | |
63 | #define AMC6821_REG_CONF3 0x3F | |
64 | #define AMC6821_REG_CONF4 0x04 | |
65 | #define AMC6821_REG_STAT1 0x02 | |
66 | #define AMC6821_REG_STAT2 0x03 | |
67 | #define AMC6821_REG_TDATA_LOW 0x08 | |
68 | #define AMC6821_REG_TDATA_HI 0x09 | |
69 | #define AMC6821_REG_LTEMP_HI 0x0A | |
70 | #define AMC6821_REG_RTEMP_HI 0x0B | |
71 | #define AMC6821_REG_LTEMP_LIMIT_MIN 0x15 | |
72 | #define AMC6821_REG_LTEMP_LIMIT_MAX 0x14 | |
73 | #define AMC6821_REG_RTEMP_LIMIT_MIN 0x19 | |
74 | #define AMC6821_REG_RTEMP_LIMIT_MAX 0x18 | |
75 | #define AMC6821_REG_LTEMP_CRIT 0x1B | |
76 | #define AMC6821_REG_RTEMP_CRIT 0x1D | |
77 | #define AMC6821_REG_PSV_TEMP 0x1C | |
78 | #define AMC6821_REG_DCY 0x22 | |
79 | #define AMC6821_REG_LTEMP_FAN_CTRL 0x24 | |
80 | #define AMC6821_REG_RTEMP_FAN_CTRL 0x25 | |
81 | #define AMC6821_REG_DCY_LOW_TEMP 0x21 | |
82 | ||
83 | #define AMC6821_REG_TACH_LLIMITL 0x10 | |
84 | #define AMC6821_REG_TACH_LLIMITH 0x11 | |
85 | #define AMC6821_REG_TACH_HLIMITL 0x12 | |
86 | #define AMC6821_REG_TACH_HLIMITH 0x13 | |
87 | ||
88 | #define AMC6821_CONF1_START 0x01 | |
89 | #define AMC6821_CONF1_FAN_INT_EN 0x02 | |
90 | #define AMC6821_CONF1_FANIE 0x04 | |
91 | #define AMC6821_CONF1_PWMINV 0x08 | |
92 | #define AMC6821_CONF1_FAN_FAULT_EN 0x10 | |
93 | #define AMC6821_CONF1_FDRC0 0x20 | |
94 | #define AMC6821_CONF1_FDRC1 0x40 | |
95 | #define AMC6821_CONF1_THERMOVIE 0x80 | |
96 | ||
97 | #define AMC6821_CONF2_PWM_EN 0x01 | |
98 | #define AMC6821_CONF2_TACH_MODE 0x02 | |
99 | #define AMC6821_CONF2_TACH_EN 0x04 | |
100 | #define AMC6821_CONF2_RTFIE 0x08 | |
101 | #define AMC6821_CONF2_LTOIE 0x10 | |
102 | #define AMC6821_CONF2_RTOIE 0x20 | |
103 | #define AMC6821_CONF2_PSVIE 0x40 | |
104 | #define AMC6821_CONF2_RST 0x80 | |
105 | ||
106 | #define AMC6821_CONF3_THERM_FAN_EN 0x80 | |
107 | #define AMC6821_CONF3_REV_MASK 0x0F | |
108 | ||
109 | #define AMC6821_CONF4_OVREN 0x10 | |
110 | #define AMC6821_CONF4_TACH_FAST 0x20 | |
111 | #define AMC6821_CONF4_PSPR 0x40 | |
112 | #define AMC6821_CONF4_MODE 0x80 | |
113 | ||
114 | #define AMC6821_STAT1_RPM_ALARM 0x01 | |
115 | #define AMC6821_STAT1_FANS 0x02 | |
116 | #define AMC6821_STAT1_RTH 0x04 | |
117 | #define AMC6821_STAT1_RTL 0x08 | |
118 | #define AMC6821_STAT1_R_THERM 0x10 | |
119 | #define AMC6821_STAT1_RTF 0x20 | |
120 | #define AMC6821_STAT1_LTH 0x40 | |
121 | #define AMC6821_STAT1_LTL 0x80 | |
122 | ||
123 | #define AMC6821_STAT2_RTC 0x08 | |
124 | #define AMC6821_STAT2_LTC 0x10 | |
125 | #define AMC6821_STAT2_LPSV 0x20 | |
126 | #define AMC6821_STAT2_L_THERM 0x40 | |
127 | #define AMC6821_STAT2_THERM_IN 0x80 | |
128 | ||
129 | enum {IDX_TEMP1_INPUT = 0, IDX_TEMP1_MIN, IDX_TEMP1_MAX, | |
130 | IDX_TEMP1_CRIT, IDX_TEMP2_INPUT, IDX_TEMP2_MIN, | |
131 | IDX_TEMP2_MAX, IDX_TEMP2_CRIT, | |
132 | TEMP_IDX_LEN, }; | |
133 | ||
134 | static const u8 temp_reg[] = {AMC6821_REG_LTEMP_HI, | |
135 | AMC6821_REG_LTEMP_LIMIT_MIN, | |
136 | AMC6821_REG_LTEMP_LIMIT_MAX, | |
137 | AMC6821_REG_LTEMP_CRIT, | |
138 | AMC6821_REG_RTEMP_HI, | |
139 | AMC6821_REG_RTEMP_LIMIT_MIN, | |
140 | AMC6821_REG_RTEMP_LIMIT_MAX, | |
141 | AMC6821_REG_RTEMP_CRIT, }; | |
142 | ||
143 | enum {IDX_FAN1_INPUT = 0, IDX_FAN1_MIN, IDX_FAN1_MAX, | |
144 | FAN1_IDX_LEN, }; | |
145 | ||
146 | static const u8 fan_reg_low[] = {AMC6821_REG_TDATA_LOW, | |
147 | AMC6821_REG_TACH_LLIMITL, | |
148 | AMC6821_REG_TACH_HLIMITL, }; | |
149 | ||
150 | ||
151 | static const u8 fan_reg_hi[] = {AMC6821_REG_TDATA_HI, | |
152 | AMC6821_REG_TACH_LLIMITH, | |
153 | AMC6821_REG_TACH_HLIMITH, }; | |
154 | ||
155 | static int amc6821_probe( | |
156 | struct i2c_client *client, | |
157 | const struct i2c_device_id *id); | |
158 | static int amc6821_detect( | |
159 | struct i2c_client *client, | |
160 | struct i2c_board_info *info); | |
161 | static int amc6821_init_client(struct i2c_client *client); | |
162 | static int amc6821_remove(struct i2c_client *client); | |
163 | static struct amc6821_data *amc6821_update_device(struct device *dev); | |
164 | ||
165 | /* | |
166 | * Driver data (common to all clients) | |
167 | */ | |
168 | ||
169 | static const struct i2c_device_id amc6821_id[] = { | |
170 | { "amc6821", amc6821 }, | |
171 | { } | |
172 | }; | |
173 | ||
174 | MODULE_DEVICE_TABLE(i2c, amc6821_id); | |
175 | ||
176 | static struct i2c_driver amc6821_driver = { | |
177 | .class = I2C_CLASS_HWMON, | |
178 | .driver = { | |
179 | .name = "amc6821", | |
180 | }, | |
181 | .probe = amc6821_probe, | |
182 | .remove = amc6821_remove, | |
183 | .id_table = amc6821_id, | |
184 | .detect = amc6821_detect, | |
185 | .address_list = normal_i2c, | |
186 | }; | |
187 | ||
188 | ||
189 | /* | |
190 | * Client data (each client gets its own) | |
ca3c7b63 | 191 | */ |
b5430a04 TM |
192 | |
193 | struct amc6821_data { | |
194 | struct device *hwmon_dev; | |
195 | struct mutex update_lock; | |
196 | char valid; /* zero until following fields are valid */ | |
197 | unsigned long last_updated; /* in jiffies */ | |
198 | ||
199 | /* register values */ | |
200 | int temp[TEMP_IDX_LEN]; | |
201 | ||
202 | u16 fan[FAN1_IDX_LEN]; | |
203 | u8 fan1_div; | |
204 | ||
205 | u8 pwm1; | |
206 | u8 temp1_auto_point_temp[3]; | |
207 | u8 temp2_auto_point_temp[3]; | |
208 | u8 pwm1_auto_point_pwm[3]; | |
209 | u8 pwm1_enable; | |
210 | u8 pwm1_auto_channels_temp; | |
211 | ||
212 | u8 stat1; | |
213 | u8 stat2; | |
214 | }; | |
215 | ||
216 | ||
217 | static ssize_t get_temp( | |
218 | struct device *dev, | |
219 | struct device_attribute *devattr, | |
220 | char *buf) | |
221 | { | |
222 | struct amc6821_data *data = amc6821_update_device(dev); | |
223 | int ix = to_sensor_dev_attr(devattr)->index; | |
224 | ||
225 | return sprintf(buf, "%d\n", data->temp[ix] * 1000); | |
226 | } | |
227 | ||
228 | ||
229 | ||
230 | static ssize_t set_temp( | |
231 | struct device *dev, | |
232 | struct device_attribute *attr, | |
233 | const char *buf, | |
234 | size_t count) | |
235 | { | |
236 | struct i2c_client *client = to_i2c_client(dev); | |
237 | struct amc6821_data *data = i2c_get_clientdata(client); | |
238 | int ix = to_sensor_dev_attr(attr)->index; | |
239 | long val; | |
240 | ||
179c4fdb | 241 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
242 | if (ret) |
243 | return ret; | |
2a844c14 | 244 | val = clamp_val(val / 1000, -128, 127); |
b5430a04 TM |
245 | |
246 | mutex_lock(&data->update_lock); | |
247 | data->temp[ix] = val; | |
248 | if (i2c_smbus_write_byte_data(client, temp_reg[ix], data->temp[ix])) { | |
249 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
250 | count = -EIO; | |
251 | } | |
252 | mutex_unlock(&data->update_lock); | |
253 | return count; | |
254 | } | |
255 | ||
256 | ||
257 | ||
258 | ||
259 | static ssize_t get_temp_alarm( | |
260 | struct device *dev, | |
261 | struct device_attribute *devattr, | |
262 | char *buf) | |
263 | { | |
264 | struct amc6821_data *data = amc6821_update_device(dev); | |
265 | int ix = to_sensor_dev_attr(devattr)->index; | |
266 | u8 flag; | |
267 | ||
268 | switch (ix) { | |
269 | case IDX_TEMP1_MIN: | |
270 | flag = data->stat1 & AMC6821_STAT1_LTL; | |
271 | break; | |
272 | case IDX_TEMP1_MAX: | |
273 | flag = data->stat1 & AMC6821_STAT1_LTH; | |
274 | break; | |
275 | case IDX_TEMP1_CRIT: | |
276 | flag = data->stat2 & AMC6821_STAT2_LTC; | |
277 | break; | |
278 | case IDX_TEMP2_MIN: | |
279 | flag = data->stat1 & AMC6821_STAT1_RTL; | |
280 | break; | |
281 | case IDX_TEMP2_MAX: | |
282 | flag = data->stat1 & AMC6821_STAT1_RTH; | |
283 | break; | |
284 | case IDX_TEMP2_CRIT: | |
285 | flag = data->stat2 & AMC6821_STAT2_RTC; | |
286 | break; | |
287 | default: | |
288 | dev_dbg(dev, "Unknown attr->index (%d).\n", ix); | |
289 | return -EINVAL; | |
290 | } | |
291 | if (flag) | |
292 | return sprintf(buf, "1"); | |
293 | else | |
294 | return sprintf(buf, "0"); | |
295 | } | |
296 | ||
297 | ||
298 | ||
299 | ||
300 | static ssize_t get_temp2_fault( | |
301 | struct device *dev, | |
302 | struct device_attribute *devattr, | |
303 | char *buf) | |
304 | { | |
305 | struct amc6821_data *data = amc6821_update_device(dev); | |
306 | if (data->stat1 & AMC6821_STAT1_RTF) | |
307 | return sprintf(buf, "1"); | |
308 | else | |
309 | return sprintf(buf, "0"); | |
310 | } | |
311 | ||
312 | static ssize_t get_pwm1( | |
313 | struct device *dev, | |
314 | struct device_attribute *devattr, | |
315 | char *buf) | |
316 | { | |
317 | struct amc6821_data *data = amc6821_update_device(dev); | |
318 | return sprintf(buf, "%d\n", data->pwm1); | |
319 | } | |
320 | ||
321 | static ssize_t set_pwm1( | |
322 | struct device *dev, | |
323 | struct device_attribute *devattr, | |
324 | const char *buf, | |
325 | size_t count) | |
326 | { | |
327 | struct i2c_client *client = to_i2c_client(dev); | |
328 | struct amc6821_data *data = i2c_get_clientdata(client); | |
329 | long val; | |
179c4fdb | 330 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
331 | if (ret) |
332 | return ret; | |
333 | ||
334 | mutex_lock(&data->update_lock); | |
2a844c14 | 335 | data->pwm1 = clamp_val(val , 0, 255); |
b5430a04 TM |
336 | i2c_smbus_write_byte_data(client, AMC6821_REG_DCY, data->pwm1); |
337 | mutex_unlock(&data->update_lock); | |
338 | return count; | |
339 | } | |
340 | ||
341 | static ssize_t get_pwm1_enable( | |
342 | struct device *dev, | |
343 | struct device_attribute *devattr, | |
344 | char *buf) | |
345 | { | |
346 | struct amc6821_data *data = amc6821_update_device(dev); | |
347 | return sprintf(buf, "%d\n", data->pwm1_enable); | |
348 | } | |
349 | ||
350 | static ssize_t set_pwm1_enable( | |
351 | struct device *dev, | |
352 | struct device_attribute *attr, | |
353 | const char *buf, | |
354 | size_t count) | |
355 | { | |
356 | struct i2c_client *client = to_i2c_client(dev); | |
357 | struct amc6821_data *data = i2c_get_clientdata(client); | |
358 | long val; | |
179c4fdb | 359 | int config = kstrtol(buf, 10, &val); |
b5430a04 TM |
360 | if (config) |
361 | return config; | |
362 | ||
363 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF1); | |
364 | if (config < 0) { | |
365 | dev_err(&client->dev, | |
366 | "Error reading configuration register, aborting.\n"); | |
367 | return -EIO; | |
368 | } | |
369 | ||
370 | switch (val) { | |
371 | case 1: | |
372 | config &= ~AMC6821_CONF1_FDRC0; | |
373 | config &= ~AMC6821_CONF1_FDRC1; | |
374 | break; | |
375 | case 2: | |
376 | config &= ~AMC6821_CONF1_FDRC0; | |
377 | config |= AMC6821_CONF1_FDRC1; | |
378 | break; | |
379 | case 3: | |
380 | config |= AMC6821_CONF1_FDRC0; | |
381 | config |= AMC6821_CONF1_FDRC1; | |
382 | break; | |
383 | default: | |
384 | return -EINVAL; | |
385 | } | |
386 | mutex_lock(&data->update_lock); | |
387 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF1, config)) { | |
388 | dev_err(&client->dev, | |
389 | "Configuration register write error, aborting.\n"); | |
390 | count = -EIO; | |
391 | } | |
392 | mutex_unlock(&data->update_lock); | |
393 | return count; | |
394 | } | |
395 | ||
396 | ||
397 | static ssize_t get_pwm1_auto_channels_temp( | |
398 | struct device *dev, | |
399 | struct device_attribute *devattr, | |
400 | char *buf) | |
401 | { | |
402 | struct amc6821_data *data = amc6821_update_device(dev); | |
403 | return sprintf(buf, "%d\n", data->pwm1_auto_channels_temp); | |
404 | } | |
405 | ||
406 | ||
407 | static ssize_t get_temp_auto_point_temp( | |
408 | struct device *dev, | |
409 | struct device_attribute *devattr, | |
410 | char *buf) | |
411 | { | |
412 | int ix = to_sensor_dev_attr_2(devattr)->index; | |
413 | int nr = to_sensor_dev_attr_2(devattr)->nr; | |
414 | struct amc6821_data *data = amc6821_update_device(dev); | |
415 | switch (nr) { | |
416 | case 1: | |
417 | return sprintf(buf, "%d\n", | |
418 | data->temp1_auto_point_temp[ix] * 1000); | |
419 | break; | |
420 | case 2: | |
421 | return sprintf(buf, "%d\n", | |
422 | data->temp2_auto_point_temp[ix] * 1000); | |
423 | break; | |
424 | default: | |
425 | dev_dbg(dev, "Unknown attr->nr (%d).\n", nr); | |
426 | return -EINVAL; | |
427 | } | |
428 | } | |
429 | ||
430 | ||
431 | static ssize_t get_pwm1_auto_point_pwm( | |
432 | struct device *dev, | |
433 | struct device_attribute *devattr, | |
434 | char *buf) | |
435 | { | |
436 | int ix = to_sensor_dev_attr(devattr)->index; | |
437 | struct amc6821_data *data = amc6821_update_device(dev); | |
438 | return sprintf(buf, "%d\n", data->pwm1_auto_point_pwm[ix]); | |
439 | } | |
440 | ||
441 | ||
442 | static inline ssize_t set_slope_register(struct i2c_client *client, | |
443 | u8 reg, | |
444 | u8 dpwm, | |
445 | u8 *ptemp) | |
446 | { | |
447 | int dt; | |
448 | u8 tmp; | |
449 | ||
450 | dt = ptemp[2]-ptemp[1]; | |
451 | for (tmp = 4; tmp > 0; tmp--) { | |
452 | if (dt * (0x20 >> tmp) >= dpwm) | |
453 | break; | |
454 | } | |
455 | tmp |= (ptemp[1] & 0x7C) << 1; | |
456 | if (i2c_smbus_write_byte_data(client, | |
457 | reg, tmp)) { | |
458 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
459 | return -EIO; | |
460 | } | |
461 | return 0; | |
462 | } | |
463 | ||
464 | ||
465 | ||
466 | static ssize_t set_temp_auto_point_temp( | |
467 | struct device *dev, | |
468 | struct device_attribute *attr, | |
469 | const char *buf, | |
470 | size_t count) | |
471 | { | |
472 | struct i2c_client *client = to_i2c_client(dev); | |
473 | struct amc6821_data *data = amc6821_update_device(dev); | |
474 | int ix = to_sensor_dev_attr_2(attr)->index; | |
475 | int nr = to_sensor_dev_attr_2(attr)->nr; | |
476 | u8 *ptemp; | |
477 | u8 reg; | |
478 | int dpwm; | |
479 | long val; | |
179c4fdb | 480 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
481 | if (ret) |
482 | return ret; | |
483 | ||
484 | switch (nr) { | |
485 | case 1: | |
486 | ptemp = data->temp1_auto_point_temp; | |
487 | reg = AMC6821_REG_LTEMP_FAN_CTRL; | |
488 | break; | |
489 | case 2: | |
490 | ptemp = data->temp2_auto_point_temp; | |
491 | reg = AMC6821_REG_RTEMP_FAN_CTRL; | |
492 | break; | |
493 | default: | |
494 | dev_dbg(dev, "Unknown attr->nr (%d).\n", nr); | |
495 | return -EINVAL; | |
496 | } | |
497 | ||
498 | data->valid = 0; | |
499 | mutex_lock(&data->update_lock); | |
500 | switch (ix) { | |
501 | case 0: | |
2a844c14 GR |
502 | ptemp[0] = clamp_val(val / 1000, 0, |
503 | data->temp1_auto_point_temp[1]); | |
504 | ptemp[0] = clamp_val(ptemp[0], 0, | |
505 | data->temp2_auto_point_temp[1]); | |
506 | ptemp[0] = clamp_val(ptemp[0], 0, 63); | |
b5430a04 TM |
507 | if (i2c_smbus_write_byte_data( |
508 | client, | |
509 | AMC6821_REG_PSV_TEMP, | |
510 | ptemp[0])) { | |
511 | dev_err(&client->dev, | |
512 | "Register write error, aborting.\n"); | |
513 | count = -EIO; | |
514 | } | |
515 | goto EXIT; | |
516 | break; | |
517 | case 1: | |
2a844c14 | 518 | ptemp[1] = clamp_val(val / 1000, (ptemp[0] & 0x7C) + 4, 124); |
b5430a04 | 519 | ptemp[1] &= 0x7C; |
2a844c14 | 520 | ptemp[2] = clamp_val(ptemp[2], ptemp[1] + 1, 255); |
b5430a04 TM |
521 | break; |
522 | case 2: | |
2a844c14 | 523 | ptemp[2] = clamp_val(val / 1000, ptemp[1]+1, 255); |
b5430a04 TM |
524 | break; |
525 | default: | |
526 | dev_dbg(dev, "Unknown attr->index (%d).\n", ix); | |
527 | count = -EINVAL; | |
528 | goto EXIT; | |
529 | } | |
530 | dpwm = data->pwm1_auto_point_pwm[2] - data->pwm1_auto_point_pwm[1]; | |
531 | if (set_slope_register(client, reg, dpwm, ptemp)) | |
532 | count = -EIO; | |
533 | ||
534 | EXIT: | |
535 | mutex_unlock(&data->update_lock); | |
536 | return count; | |
537 | } | |
538 | ||
539 | ||
540 | ||
541 | static ssize_t set_pwm1_auto_point_pwm( | |
542 | struct device *dev, | |
543 | struct device_attribute *attr, | |
544 | const char *buf, | |
545 | size_t count) | |
546 | { | |
547 | struct i2c_client *client = to_i2c_client(dev); | |
548 | struct amc6821_data *data = i2c_get_clientdata(client); | |
549 | int dpwm; | |
550 | long val; | |
179c4fdb | 551 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
552 | if (ret) |
553 | return ret; | |
554 | ||
555 | mutex_lock(&data->update_lock); | |
2a844c14 | 556 | data->pwm1_auto_point_pwm[1] = clamp_val(val, 0, 254); |
b5430a04 TM |
557 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_DCY_LOW_TEMP, |
558 | data->pwm1_auto_point_pwm[1])) { | |
559 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
560 | count = -EIO; | |
561 | goto EXIT; | |
562 | } | |
563 | dpwm = data->pwm1_auto_point_pwm[2] - data->pwm1_auto_point_pwm[1]; | |
564 | if (set_slope_register(client, AMC6821_REG_LTEMP_FAN_CTRL, dpwm, | |
565 | data->temp1_auto_point_temp)) { | |
566 | count = -EIO; | |
567 | goto EXIT; | |
568 | } | |
569 | if (set_slope_register(client, AMC6821_REG_RTEMP_FAN_CTRL, dpwm, | |
570 | data->temp2_auto_point_temp)) { | |
571 | count = -EIO; | |
572 | goto EXIT; | |
573 | } | |
574 | ||
575 | EXIT: | |
576 | data->valid = 0; | |
577 | mutex_unlock(&data->update_lock); | |
578 | return count; | |
579 | } | |
580 | ||
581 | static ssize_t get_fan( | |
582 | struct device *dev, | |
583 | struct device_attribute *devattr, | |
584 | char *buf) | |
585 | { | |
586 | struct amc6821_data *data = amc6821_update_device(dev); | |
587 | int ix = to_sensor_dev_attr(devattr)->index; | |
588 | if (0 == data->fan[ix]) | |
589 | return sprintf(buf, "0"); | |
590 | return sprintf(buf, "%d\n", (int)(6000000 / data->fan[ix])); | |
591 | } | |
592 | ||
593 | ||
594 | ||
595 | static ssize_t get_fan1_fault( | |
596 | struct device *dev, | |
597 | struct device_attribute *devattr, | |
598 | char *buf) | |
599 | { | |
600 | struct amc6821_data *data = amc6821_update_device(dev); | |
601 | if (data->stat1 & AMC6821_STAT1_FANS) | |
602 | return sprintf(buf, "1"); | |
603 | else | |
604 | return sprintf(buf, "0"); | |
605 | } | |
606 | ||
607 | ||
608 | ||
609 | static ssize_t set_fan( | |
610 | struct device *dev, | |
611 | struct device_attribute *attr, | |
612 | const char *buf, size_t count) | |
613 | { | |
614 | struct i2c_client *client = to_i2c_client(dev); | |
615 | struct amc6821_data *data = i2c_get_clientdata(client); | |
616 | long val; | |
617 | int ix = to_sensor_dev_attr(attr)->index; | |
179c4fdb | 618 | int ret = kstrtol(buf, 10, &val); |
b5430a04 TM |
619 | if (ret) |
620 | return ret; | |
621 | val = 1 > val ? 0xFFFF : 6000000/val; | |
622 | ||
623 | mutex_lock(&data->update_lock); | |
2a844c14 | 624 | data->fan[ix] = (u16) clamp_val(val, 1, 0xFFFF); |
b5430a04 TM |
625 | if (i2c_smbus_write_byte_data(client, fan_reg_low[ix], |
626 | data->fan[ix] & 0xFF)) { | |
627 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
628 | count = -EIO; | |
629 | goto EXIT; | |
630 | } | |
631 | if (i2c_smbus_write_byte_data(client, | |
632 | fan_reg_hi[ix], data->fan[ix] >> 8)) { | |
633 | dev_err(&client->dev, "Register write error, aborting.\n"); | |
634 | count = -EIO; | |
635 | } | |
636 | EXIT: | |
637 | mutex_unlock(&data->update_lock); | |
638 | return count; | |
639 | } | |
640 | ||
641 | ||
642 | ||
643 | static ssize_t get_fan1_div( | |
644 | struct device *dev, | |
645 | struct device_attribute *devattr, | |
646 | char *buf) | |
647 | { | |
648 | struct amc6821_data *data = amc6821_update_device(dev); | |
649 | return sprintf(buf, "%d\n", data->fan1_div); | |
650 | } | |
651 | ||
652 | static ssize_t set_fan1_div( | |
653 | struct device *dev, | |
654 | struct device_attribute *attr, | |
655 | const char *buf, size_t count) | |
656 | { | |
657 | struct i2c_client *client = to_i2c_client(dev); | |
658 | struct amc6821_data *data = i2c_get_clientdata(client); | |
659 | long val; | |
179c4fdb | 660 | int config = kstrtol(buf, 10, &val); |
b5430a04 TM |
661 | if (config) |
662 | return config; | |
663 | ||
664 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF4); | |
665 | if (config < 0) { | |
666 | dev_err(&client->dev, | |
667 | "Error reading configuration register, aborting.\n"); | |
668 | return -EIO; | |
669 | } | |
670 | mutex_lock(&data->update_lock); | |
671 | switch (val) { | |
672 | case 2: | |
673 | config &= ~AMC6821_CONF4_PSPR; | |
674 | data->fan1_div = 2; | |
675 | break; | |
676 | case 4: | |
677 | config |= AMC6821_CONF4_PSPR; | |
678 | data->fan1_div = 4; | |
679 | break; | |
680 | default: | |
b5430a04 TM |
681 | count = -EINVAL; |
682 | goto EXIT; | |
683 | } | |
684 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF4, config)) { | |
685 | dev_err(&client->dev, | |
686 | "Configuration register write error, aborting.\n"); | |
687 | count = -EIO; | |
688 | } | |
689 | EXIT: | |
690 | mutex_unlock(&data->update_lock); | |
691 | return count; | |
692 | } | |
693 | ||
694 | ||
695 | ||
696 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, | |
697 | get_temp, NULL, IDX_TEMP1_INPUT); | |
698 | static SENSOR_DEVICE_ATTR(temp1_min, S_IRUGO | S_IWUSR, get_temp, | |
699 | set_temp, IDX_TEMP1_MIN); | |
700 | static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, get_temp, | |
701 | set_temp, IDX_TEMP1_MAX); | |
702 | static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR, get_temp, | |
703 | set_temp, IDX_TEMP1_CRIT); | |
704 | static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, | |
705 | get_temp_alarm, NULL, IDX_TEMP1_MIN); | |
706 | static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, | |
707 | get_temp_alarm, NULL, IDX_TEMP1_MAX); | |
708 | static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, | |
709 | get_temp_alarm, NULL, IDX_TEMP1_CRIT); | |
710 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO | S_IWUSR, | |
711 | get_temp, NULL, IDX_TEMP2_INPUT); | |
712 | static SENSOR_DEVICE_ATTR(temp2_min, S_IRUGO | S_IWUSR, get_temp, | |
713 | set_temp, IDX_TEMP2_MIN); | |
714 | static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR, get_temp, | |
715 | set_temp, IDX_TEMP2_MAX); | |
716 | static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO | S_IWUSR, get_temp, | |
717 | set_temp, IDX_TEMP2_CRIT); | |
718 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, | |
719 | get_temp2_fault, NULL, 0); | |
720 | static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, | |
721 | get_temp_alarm, NULL, IDX_TEMP2_MIN); | |
722 | static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, | |
723 | get_temp_alarm, NULL, IDX_TEMP2_MAX); | |
724 | static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, | |
725 | get_temp_alarm, NULL, IDX_TEMP2_CRIT); | |
726 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan, NULL, IDX_FAN1_INPUT); | |
727 | static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR, | |
728 | get_fan, set_fan, IDX_FAN1_MIN); | |
729 | static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO | S_IWUSR, | |
730 | get_fan, set_fan, IDX_FAN1_MAX); | |
731 | static SENSOR_DEVICE_ATTR(fan1_fault, S_IRUGO, get_fan1_fault, NULL, 0); | |
732 | static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, | |
733 | get_fan1_div, set_fan1_div, 0); | |
734 | ||
735 | static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, get_pwm1, set_pwm1, 0); | |
736 | static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, | |
737 | get_pwm1_enable, set_pwm1_enable, 0); | |
738 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IRUGO, | |
739 | get_pwm1_auto_point_pwm, NULL, 0); | |
740 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO, | |
741 | get_pwm1_auto_point_pwm, set_pwm1_auto_point_pwm, 1); | |
742 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IRUGO, | |
743 | get_pwm1_auto_point_pwm, NULL, 2); | |
744 | static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO, | |
745 | get_pwm1_auto_channels_temp, NULL, 0); | |
746 | static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO, | |
747 | get_temp_auto_point_temp, NULL, 1, 0); | |
748 | static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IWUSR | S_IRUGO, | |
749 | get_temp_auto_point_temp, set_temp_auto_point_temp, 1, 1); | |
750 | static SENSOR_DEVICE_ATTR_2(temp1_auto_point3_temp, S_IWUSR | S_IRUGO, | |
751 | get_temp_auto_point_temp, set_temp_auto_point_temp, 1, 2); | |
752 | ||
753 | static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IWUSR | S_IRUGO, | |
754 | get_temp_auto_point_temp, set_temp_auto_point_temp, 2, 0); | |
755 | static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IWUSR | S_IRUGO, | |
756 | get_temp_auto_point_temp, set_temp_auto_point_temp, 2, 1); | |
757 | static SENSOR_DEVICE_ATTR_2(temp2_auto_point3_temp, S_IWUSR | S_IRUGO, | |
758 | get_temp_auto_point_temp, set_temp_auto_point_temp, 2, 2); | |
759 | ||
760 | ||
761 | ||
762 | static struct attribute *amc6821_attrs[] = { | |
763 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
764 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
765 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
766 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
767 | &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, | |
768 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, | |
769 | &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, | |
770 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
771 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
772 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
773 | &sensor_dev_attr_temp2_crit.dev_attr.attr, | |
774 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, | |
775 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, | |
776 | &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, | |
777 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
778 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
779 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
780 | &sensor_dev_attr_fan1_max.dev_attr.attr, | |
781 | &sensor_dev_attr_fan1_fault.dev_attr.attr, | |
782 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
783 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
784 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
785 | &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, | |
786 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, | |
787 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, | |
788 | &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, | |
789 | &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, | |
790 | &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr, | |
791 | &sensor_dev_attr_temp1_auto_point3_temp.dev_attr.attr, | |
792 | &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr, | |
793 | &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr, | |
794 | &sensor_dev_attr_temp2_auto_point3_temp.dev_attr.attr, | |
795 | NULL | |
796 | }; | |
797 | ||
798 | static struct attribute_group amc6821_attr_grp = { | |
799 | .attrs = amc6821_attrs, | |
800 | }; | |
801 | ||
802 | ||
803 | ||
804 | /* Return 0 if detection is successful, -ENODEV otherwise */ | |
805 | static int amc6821_detect( | |
806 | struct i2c_client *client, | |
807 | struct i2c_board_info *info) | |
808 | { | |
809 | struct i2c_adapter *adapter = client->adapter; | |
810 | int address = client->addr; | |
811 | int dev_id, comp_id; | |
812 | ||
813 | dev_dbg(&adapter->dev, "amc6821_detect called.\n"); | |
814 | ||
815 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { | |
816 | dev_dbg(&adapter->dev, | |
817 | "amc6821: I2C bus doesn't support byte mode, " | |
818 | "skipping.\n"); | |
819 | return -ENODEV; | |
820 | } | |
821 | ||
822 | dev_id = i2c_smbus_read_byte_data(client, AMC6821_REG_DEV_ID); | |
823 | comp_id = i2c_smbus_read_byte_data(client, AMC6821_REG_COMP_ID); | |
824 | if (dev_id != 0x21 || comp_id != 0x49) { | |
825 | dev_dbg(&adapter->dev, | |
826 | "amc6821: detection failed at 0x%02x.\n", | |
827 | address); | |
828 | return -ENODEV; | |
829 | } | |
830 | ||
ca3c7b63 GR |
831 | /* |
832 | * Bit 7 of the address register is ignored, so we can check the | |
833 | * ID registers again | |
834 | */ | |
b5430a04 TM |
835 | dev_id = i2c_smbus_read_byte_data(client, 0x80 | AMC6821_REG_DEV_ID); |
836 | comp_id = i2c_smbus_read_byte_data(client, 0x80 | AMC6821_REG_COMP_ID); | |
837 | if (dev_id != 0x21 || comp_id != 0x49) { | |
838 | dev_dbg(&adapter->dev, | |
839 | "amc6821: detection failed at 0x%02x.\n", | |
840 | address); | |
841 | return -ENODEV; | |
842 | } | |
843 | ||
844 | dev_info(&adapter->dev, "amc6821: chip found at 0x%02x.\n", address); | |
845 | strlcpy(info->type, "amc6821", I2C_NAME_SIZE); | |
846 | ||
847 | return 0; | |
848 | } | |
849 | ||
850 | static int amc6821_probe( | |
851 | struct i2c_client *client, | |
852 | const struct i2c_device_id *id) | |
853 | { | |
854 | struct amc6821_data *data; | |
855 | int err; | |
856 | ||
f9286434 GR |
857 | data = devm_kzalloc(&client->dev, sizeof(struct amc6821_data), |
858 | GFP_KERNEL); | |
859 | if (!data) | |
b5430a04 | 860 | return -ENOMEM; |
b5430a04 TM |
861 | |
862 | i2c_set_clientdata(client, data); | |
863 | mutex_init(&data->update_lock); | |
864 | ||
865 | /* | |
866 | * Initialize the amc6821 chip | |
867 | */ | |
868 | err = amc6821_init_client(client); | |
869 | if (err) | |
f9286434 | 870 | return err; |
b5430a04 TM |
871 | |
872 | err = sysfs_create_group(&client->dev.kobj, &amc6821_attr_grp); | |
873 | if (err) | |
f9286434 | 874 | return err; |
b5430a04 TM |
875 | |
876 | data->hwmon_dev = hwmon_device_register(&client->dev); | |
877 | if (!IS_ERR(data->hwmon_dev)) | |
878 | return 0; | |
879 | ||
880 | err = PTR_ERR(data->hwmon_dev); | |
881 | dev_err(&client->dev, "error registering hwmon device.\n"); | |
882 | sysfs_remove_group(&client->dev.kobj, &amc6821_attr_grp); | |
b5430a04 TM |
883 | return err; |
884 | } | |
885 | ||
886 | static int amc6821_remove(struct i2c_client *client) | |
887 | { | |
888 | struct amc6821_data *data = i2c_get_clientdata(client); | |
889 | ||
890 | hwmon_device_unregister(data->hwmon_dev); | |
891 | sysfs_remove_group(&client->dev.kobj, &amc6821_attr_grp); | |
892 | ||
b5430a04 TM |
893 | return 0; |
894 | } | |
895 | ||
896 | ||
897 | static int amc6821_init_client(struct i2c_client *client) | |
898 | { | |
899 | int config; | |
900 | int err = -EIO; | |
901 | ||
902 | if (init) { | |
903 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF4); | |
904 | ||
905 | if (config < 0) { | |
906 | dev_err(&client->dev, | |
907 | "Error reading configuration register, aborting.\n"); | |
908 | return err; | |
909 | } | |
910 | ||
911 | config |= AMC6821_CONF4_MODE; | |
912 | ||
913 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF4, | |
914 | config)) { | |
915 | dev_err(&client->dev, | |
916 | "Configuration register write error, aborting.\n"); | |
917 | return err; | |
918 | } | |
919 | ||
920 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF3); | |
921 | ||
922 | if (config < 0) { | |
923 | dev_err(&client->dev, | |
924 | "Error reading configuration register, aborting.\n"); | |
925 | return err; | |
926 | } | |
927 | ||
928 | dev_info(&client->dev, "Revision %d\n", config & 0x0f); | |
929 | ||
930 | config &= ~AMC6821_CONF3_THERM_FAN_EN; | |
931 | ||
932 | if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF3, | |
933 | config)) { | |
934 | dev_err(&client->dev, | |
935 | "Configuration register write error, aborting.\n"); | |
936 | return err; | |
937 | } | |
938 | ||
939 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF2); | |
940 | ||
941 | if (config < 0) { | |
942 | dev_err(&client->dev, | |
943 | "Error reading configuration register, aborting.\n"); | |
944 | return err; | |
945 | } | |
946 | ||
947 | config &= ~AMC6821_CONF2_RTFIE; | |
948 | config &= ~AMC6821_CONF2_LTOIE; | |
949 | config &= ~AMC6821_CONF2_RTOIE; | |
950 | if (i2c_smbus_write_byte_data(client, | |
951 | AMC6821_REG_CONF2, config)) { | |
952 | dev_err(&client->dev, | |
953 | "Configuration register write error, aborting.\n"); | |
954 | return err; | |
955 | } | |
956 | ||
957 | config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF1); | |
958 | ||
959 | if (config < 0) { | |
960 | dev_err(&client->dev, | |
961 | "Error reading configuration register, aborting.\n"); | |
962 | return err; | |
963 | } | |
964 | ||
965 | config &= ~AMC6821_CONF1_THERMOVIE; | |
966 | config &= ~AMC6821_CONF1_FANIE; | |
967 | config |= AMC6821_CONF1_START; | |
968 | if (pwminv) | |
969 | config |= AMC6821_CONF1_PWMINV; | |
970 | else | |
971 | config &= ~AMC6821_CONF1_PWMINV; | |
972 | ||
973 | if (i2c_smbus_write_byte_data( | |
974 | client, AMC6821_REG_CONF1, config)) { | |
975 | dev_err(&client->dev, | |
976 | "Configuration register write error, aborting.\n"); | |
977 | return err; | |
978 | } | |
979 | } | |
980 | return 0; | |
981 | } | |
982 | ||
983 | ||
984 | static struct amc6821_data *amc6821_update_device(struct device *dev) | |
985 | { | |
986 | struct i2c_client *client = to_i2c_client(dev); | |
987 | struct amc6821_data *data = i2c_get_clientdata(client); | |
988 | int timeout = HZ; | |
989 | u8 reg; | |
990 | int i; | |
991 | ||
992 | mutex_lock(&data->update_lock); | |
993 | ||
994 | if (time_after(jiffies, data->last_updated + timeout) || | |
995 | !data->valid) { | |
996 | ||
997 | for (i = 0; i < TEMP_IDX_LEN; i++) | |
998 | data->temp[i] = i2c_smbus_read_byte_data(client, | |
999 | temp_reg[i]); | |
1000 | ||
1001 | data->stat1 = i2c_smbus_read_byte_data(client, | |
1002 | AMC6821_REG_STAT1); | |
1003 | data->stat2 = i2c_smbus_read_byte_data(client, | |
1004 | AMC6821_REG_STAT2); | |
1005 | ||
1006 | data->pwm1 = i2c_smbus_read_byte_data(client, | |
1007 | AMC6821_REG_DCY); | |
1008 | for (i = 0; i < FAN1_IDX_LEN; i++) { | |
1009 | data->fan[i] = i2c_smbus_read_byte_data( | |
1010 | client, | |
1011 | fan_reg_low[i]); | |
1012 | data->fan[i] += i2c_smbus_read_byte_data( | |
1013 | client, | |
1014 | fan_reg_hi[i]) << 8; | |
1015 | } | |
1016 | data->fan1_div = i2c_smbus_read_byte_data(client, | |
1017 | AMC6821_REG_CONF4); | |
1018 | data->fan1_div = data->fan1_div & AMC6821_CONF4_PSPR ? 4 : 2; | |
1019 | ||
1020 | data->pwm1_auto_point_pwm[0] = 0; | |
1021 | data->pwm1_auto_point_pwm[2] = 255; | |
1022 | data->pwm1_auto_point_pwm[1] = i2c_smbus_read_byte_data(client, | |
1023 | AMC6821_REG_DCY_LOW_TEMP); | |
1024 | ||
1025 | data->temp1_auto_point_temp[0] = | |
1026 | i2c_smbus_read_byte_data(client, | |
1027 | AMC6821_REG_PSV_TEMP); | |
1028 | data->temp2_auto_point_temp[0] = | |
1029 | data->temp1_auto_point_temp[0]; | |
1030 | reg = i2c_smbus_read_byte_data(client, | |
1031 | AMC6821_REG_LTEMP_FAN_CTRL); | |
1032 | data->temp1_auto_point_temp[1] = (reg & 0xF8) >> 1; | |
1033 | reg &= 0x07; | |
1034 | reg = 0x20 >> reg; | |
1035 | if (reg > 0) | |
1036 | data->temp1_auto_point_temp[2] = | |
1037 | data->temp1_auto_point_temp[1] + | |
1038 | (data->pwm1_auto_point_pwm[2] - | |
1039 | data->pwm1_auto_point_pwm[1]) / reg; | |
1040 | else | |
1041 | data->temp1_auto_point_temp[2] = 255; | |
1042 | ||
1043 | reg = i2c_smbus_read_byte_data(client, | |
1044 | AMC6821_REG_RTEMP_FAN_CTRL); | |
1045 | data->temp2_auto_point_temp[1] = (reg & 0xF8) >> 1; | |
1046 | reg &= 0x07; | |
1047 | reg = 0x20 >> reg; | |
1048 | if (reg > 0) | |
1049 | data->temp2_auto_point_temp[2] = | |
1050 | data->temp2_auto_point_temp[1] + | |
1051 | (data->pwm1_auto_point_pwm[2] - | |
1052 | data->pwm1_auto_point_pwm[1]) / reg; | |
1053 | else | |
1054 | data->temp2_auto_point_temp[2] = 255; | |
1055 | ||
1056 | reg = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF1); | |
1057 | reg = (reg >> 5) & 0x3; | |
1058 | switch (reg) { | |
1059 | case 0: /*open loop: software sets pwm1*/ | |
1060 | data->pwm1_auto_channels_temp = 0; | |
1061 | data->pwm1_enable = 1; | |
1062 | break; | |
1063 | case 2: /*closed loop: remote T (temp2)*/ | |
1064 | data->pwm1_auto_channels_temp = 2; | |
1065 | data->pwm1_enable = 2; | |
1066 | break; | |
1067 | case 3: /*closed loop: local and remote T (temp2)*/ | |
1068 | data->pwm1_auto_channels_temp = 3; | |
1069 | data->pwm1_enable = 3; | |
1070 | break; | |
ca3c7b63 GR |
1071 | case 1: /* |
1072 | * semi-open loop: software sets rpm, chip controls | |
1073 | * pwm1, currently not implemented | |
1074 | */ | |
b5430a04 TM |
1075 | data->pwm1_auto_channels_temp = 0; |
1076 | data->pwm1_enable = 0; | |
1077 | break; | |
1078 | } | |
1079 | ||
1080 | data->last_updated = jiffies; | |
1081 | data->valid = 1; | |
1082 | } | |
1083 | mutex_unlock(&data->update_lock); | |
1084 | return data; | |
1085 | } | |
1086 | ||
f0967eea | 1087 | module_i2c_driver(amc6821_driver); |
b5430a04 TM |
1088 | |
1089 | MODULE_LICENSE("GPL"); | |
1090 | MODULE_AUTHOR("T. Mertelj <tomaz.mertelj@guest.arnes.si>"); | |
1091 | MODULE_DESCRIPTION("Texas Instruments amc6821 hwmon driver"); |