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1da177e4 LT |
1 | /* |
2 | * lm80.c - From lm_sensors, Linux kernel modules for hardware | |
1160631b | 3 | * monitoring |
1da177e4 | 4 | * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> |
1160631b | 5 | * and Philip Edelbrock <phil@netroedge.com> |
1da177e4 LT |
6 | * |
7 | * Ported to Linux 2.6 by Tiago Sousa <mirage@kaotik.org> | |
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 | */ | |
23 | ||
1da177e4 LT |
24 | #include <linux/module.h> |
25 | #include <linux/init.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/jiffies.h> | |
28 | #include <linux/i2c.h> | |
943b0830 | 29 | #include <linux/hwmon.h> |
f8181762 | 30 | #include <linux/hwmon-sysfs.h> |
943b0830 | 31 | #include <linux/err.h> |
9a61bf63 | 32 | #include <linux/mutex.h> |
1da177e4 LT |
33 | |
34 | /* Addresses to scan */ | |
25e9c86d MH |
35 | static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, |
36 | 0x2e, 0x2f, I2C_CLIENT_END }; | |
1da177e4 | 37 | |
1da177e4 LT |
38 | /* Many LM80 constants specified below */ |
39 | ||
40 | /* The LM80 registers */ | |
41 | #define LM80_REG_IN_MAX(nr) (0x2a + (nr) * 2) | |
42 | #define LM80_REG_IN_MIN(nr) (0x2b + (nr) * 2) | |
43 | #define LM80_REG_IN(nr) (0x20 + (nr)) | |
44 | ||
45 | #define LM80_REG_FAN1 0x28 | |
46 | #define LM80_REG_FAN2 0x29 | |
47 | #define LM80_REG_FAN_MIN(nr) (0x3b + (nr)) | |
48 | ||
49 | #define LM80_REG_TEMP 0x27 | |
50 | #define LM80_REG_TEMP_HOT_MAX 0x38 | |
51 | #define LM80_REG_TEMP_HOT_HYST 0x39 | |
52 | #define LM80_REG_TEMP_OS_MAX 0x3a | |
53 | #define LM80_REG_TEMP_OS_HYST 0x3b | |
54 | ||
55 | #define LM80_REG_CONFIG 0x00 | |
56 | #define LM80_REG_ALARM1 0x01 | |
57 | #define LM80_REG_ALARM2 0x02 | |
58 | #define LM80_REG_MASK1 0x03 | |
59 | #define LM80_REG_MASK2 0x04 | |
60 | #define LM80_REG_FANDIV 0x05 | |
61 | #define LM80_REG_RES 0x06 | |
62 | ||
9908ad4c JD |
63 | #define LM96080_REG_CONV_RATE 0x07 |
64 | #define LM96080_REG_MAN_ID 0x3e | |
65 | #define LM96080_REG_DEV_ID 0x3f | |
66 | ||
1da177e4 | 67 | |
1160631b GR |
68 | /* |
69 | * Conversions. Rounding and limit checking is only done on the TO_REG | |
70 | * variants. Note that you should be a bit careful with which arguments | |
71 | * these macros are called: arguments may be evaluated more than once. | |
72 | * Fixing this is just not worth it. | |
73 | */ | |
1da177e4 | 74 | |
2a844c14 | 75 | #define IN_TO_REG(val) (clamp_val(((val) + 5) / 10, 0, 255)) |
66b3b1f7 | 76 | #define IN_FROM_REG(val) ((val) * 10) |
1da177e4 LT |
77 | |
78 | static inline unsigned char FAN_TO_REG(unsigned rpm, unsigned div) | |
79 | { | |
80 | if (rpm == 0) | |
81 | return 255; | |
2a844c14 GR |
82 | rpm = clamp_val(rpm, 1, 1000000); |
83 | return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254); | |
1da177e4 LT |
84 | } |
85 | ||
66b3b1f7 FM |
86 | #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : \ |
87 | (val) == 255 ? 0 : 1350000/((div) * (val))) | |
1da177e4 | 88 | |
688a3174 GR |
89 | #define TEMP_FROM_REG(reg) ((reg) * 125 / 32) |
90 | #define TEMP_TO_REG(temp) (DIV_ROUND_CLOSEST(clamp_val((temp), \ | |
91 | -128000, 127000), 1000) << 8) | |
1da177e4 LT |
92 | |
93 | #define DIV_FROM_REG(val) (1 << (val)) | |
94 | ||
9711bcdd GR |
95 | enum temp_index { |
96 | t_input = 0, | |
97 | t_hot_max, | |
98 | t_hot_hyst, | |
99 | t_os_max, | |
100 | t_os_hyst, | |
101 | t_num_temp | |
102 | }; | |
103 | ||
104 | static const u8 temp_regs[t_num_temp] = { | |
105 | [t_input] = LM80_REG_TEMP, | |
106 | [t_hot_max] = LM80_REG_TEMP_HOT_MAX, | |
107 | [t_hot_hyst] = LM80_REG_TEMP_HOT_HYST, | |
108 | [t_os_max] = LM80_REG_TEMP_OS_MAX, | |
109 | [t_os_hyst] = LM80_REG_TEMP_OS_HYST, | |
110 | }; | |
111 | ||
1adf3a3e GR |
112 | enum in_index { |
113 | i_input = 0, | |
114 | i_max, | |
115 | i_min, | |
116 | i_num_in | |
117 | }; | |
118 | ||
85b3ee07 GR |
119 | enum fan_index { |
120 | f_input, | |
121 | f_min, | |
122 | f_num_fan | |
123 | }; | |
124 | ||
1da177e4 LT |
125 | /* |
126 | * Client data (each client gets its own) | |
127 | */ | |
128 | ||
129 | struct lm80_data { | |
118c9a61 | 130 | struct i2c_client *client; |
9a61bf63 | 131 | struct mutex update_lock; |
96585f1a | 132 | char error; /* !=0 if error occurred during last update */ |
1da177e4 LT |
133 | char valid; /* !=0 if following fields are valid */ |
134 | unsigned long last_updated; /* In jiffies */ | |
135 | ||
1adf3a3e | 136 | u8 in[i_num_in][7]; /* Register value, 1st index is enum in_index */ |
85b3ee07 | 137 | u8 fan[f_num_fan][2]; /* Register value, 1st index enum fan_index */ |
1da177e4 | 138 | u8 fan_div[2]; /* Register encoding, shifted right */ |
9711bcdd | 139 | s16 temp[t_num_temp]; /* Register values, normalized to 16 bit */ |
1da177e4 LT |
140 | u16 alarms; /* Register encoding, combined */ |
141 | }; | |
142 | ||
c254ffde GR |
143 | static int lm80_read_value(struct i2c_client *client, u8 reg) |
144 | { | |
145 | return i2c_smbus_read_byte_data(client, reg); | |
146 | } | |
1da177e4 | 147 | |
c254ffde GR |
148 | static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value) |
149 | { | |
150 | return i2c_smbus_write_byte_data(client, reg, value); | |
151 | } | |
1da177e4 | 152 | |
c254ffde GR |
153 | /* Called when we have found a new LM80 and after read errors */ |
154 | static void lm80_init_client(struct i2c_client *client) | |
155 | { | |
156 | /* | |
157 | * Reset all except Watchdog values and last conversion values | |
158 | * This sets fan-divs to 2, among others. This makes most other | |
159 | * initializations unnecessary | |
160 | */ | |
161 | lm80_write_value(client, LM80_REG_CONFIG, 0x80); | |
162 | /* Set 11-bit temperature resolution */ | |
163 | lm80_write_value(client, LM80_REG_RES, 0x08); | |
1da177e4 | 164 | |
c254ffde GR |
165 | /* Start monitoring */ |
166 | lm80_write_value(client, LM80_REG_CONFIG, 0x01); | |
167 | } | |
8c8bacc8 | 168 | |
c254ffde GR |
169 | static struct lm80_data *lm80_update_device(struct device *dev) |
170 | { | |
171 | struct lm80_data *data = dev_get_drvdata(dev); | |
172 | struct i2c_client *client = data->client; | |
173 | int i; | |
174 | int rv; | |
175 | int prev_rv; | |
176 | struct lm80_data *ret = data; | |
177 | ||
178 | mutex_lock(&data->update_lock); | |
179 | ||
180 | if (data->error) | |
181 | lm80_init_client(client); | |
182 | ||
183 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { | |
184 | dev_dbg(dev, "Starting lm80 update\n"); | |
185 | for (i = 0; i <= 6; i++) { | |
186 | rv = lm80_read_value(client, LM80_REG_IN(i)); | |
187 | if (rv < 0) | |
188 | goto abort; | |
189 | data->in[i_input][i] = rv; | |
190 | ||
191 | rv = lm80_read_value(client, LM80_REG_IN_MIN(i)); | |
192 | if (rv < 0) | |
193 | goto abort; | |
194 | data->in[i_min][i] = rv; | |
195 | ||
196 | rv = lm80_read_value(client, LM80_REG_IN_MAX(i)); | |
197 | if (rv < 0) | |
198 | goto abort; | |
199 | data->in[i_max][i] = rv; | |
200 | } | |
201 | ||
202 | rv = lm80_read_value(client, LM80_REG_FAN1); | |
203 | if (rv < 0) | |
204 | goto abort; | |
205 | data->fan[f_input][0] = rv; | |
206 | ||
207 | rv = lm80_read_value(client, LM80_REG_FAN_MIN(1)); | |
208 | if (rv < 0) | |
209 | goto abort; | |
210 | data->fan[f_min][0] = rv; | |
211 | ||
212 | rv = lm80_read_value(client, LM80_REG_FAN2); | |
213 | if (rv < 0) | |
214 | goto abort; | |
215 | data->fan[f_input][1] = rv; | |
216 | ||
217 | rv = lm80_read_value(client, LM80_REG_FAN_MIN(2)); | |
218 | if (rv < 0) | |
219 | goto abort; | |
220 | data->fan[f_min][1] = rv; | |
221 | ||
222 | prev_rv = rv = lm80_read_value(client, LM80_REG_TEMP); | |
223 | if (rv < 0) | |
224 | goto abort; | |
225 | rv = lm80_read_value(client, LM80_REG_RES); | |
226 | if (rv < 0) | |
227 | goto abort; | |
228 | data->temp[t_input] = (prev_rv << 8) | (rv & 0xf0); | |
229 | ||
230 | for (i = t_input + 1; i < t_num_temp; i++) { | |
231 | rv = lm80_read_value(client, temp_regs[i]); | |
232 | if (rv < 0) | |
233 | goto abort; | |
234 | data->temp[i] = rv << 8; | |
235 | } | |
236 | ||
237 | rv = lm80_read_value(client, LM80_REG_FANDIV); | |
238 | if (rv < 0) | |
239 | goto abort; | |
240 | data->fan_div[0] = (rv >> 2) & 0x03; | |
241 | data->fan_div[1] = (rv >> 4) & 0x03; | |
242 | ||
243 | prev_rv = rv = lm80_read_value(client, LM80_REG_ALARM1); | |
244 | if (rv < 0) | |
245 | goto abort; | |
246 | rv = lm80_read_value(client, LM80_REG_ALARM2); | |
247 | if (rv < 0) | |
248 | goto abort; | |
249 | data->alarms = prev_rv + (rv << 8); | |
250 | ||
251 | data->last_updated = jiffies; | |
252 | data->valid = 1; | |
253 | data->error = 0; | |
254 | } | |
255 | goto done; | |
256 | ||
257 | abort: | |
258 | ret = ERR_PTR(rv); | |
259 | data->valid = 0; | |
260 | data->error = 1; | |
261 | ||
262 | done: | |
263 | mutex_unlock(&data->update_lock); | |
264 | ||
265 | return ret; | |
266 | } | |
1da177e4 LT |
267 | |
268 | /* | |
269 | * Sysfs stuff | |
270 | */ | |
271 | ||
1adf3a3e GR |
272 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
273 | char *buf) | |
274 | { | |
275 | struct lm80_data *data = lm80_update_device(dev); | |
276 | int index = to_sensor_dev_attr_2(attr)->index; | |
277 | int nr = to_sensor_dev_attr_2(attr)->nr; | |
278 | ||
279 | if (IS_ERR(data)) | |
280 | return PTR_ERR(data); | |
281 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr][index])); | |
1da177e4 | 282 | } |
1da177e4 | 283 | |
1adf3a3e GR |
284 | static ssize_t set_in(struct device *dev, struct device_attribute *attr, |
285 | const char *buf, size_t count) | |
286 | { | |
287 | struct lm80_data *data = dev_get_drvdata(dev); | |
288 | struct i2c_client *client = data->client; | |
289 | int index = to_sensor_dev_attr_2(attr)->index; | |
290 | int nr = to_sensor_dev_attr_2(attr)->nr; | |
291 | long val; | |
292 | u8 reg; | |
293 | int err = kstrtol(buf, 10, &val); | |
294 | if (err < 0) | |
295 | return err; | |
296 | ||
297 | reg = nr == i_min ? LM80_REG_IN_MIN(index) : LM80_REG_IN_MAX(index); | |
298 | ||
299 | mutex_lock(&data->update_lock); | |
300 | data->in[nr][index] = IN_TO_REG(val); | |
301 | lm80_write_value(client, reg, data->in[nr][index]); | |
302 | mutex_unlock(&data->update_lock); | |
303 | return count; | |
1da177e4 | 304 | } |
f8181762 | 305 | |
85b3ee07 GR |
306 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
307 | char *buf) | |
308 | { | |
309 | int index = to_sensor_dev_attr_2(attr)->index; | |
310 | int nr = to_sensor_dev_attr_2(attr)->nr; | |
311 | struct lm80_data *data = lm80_update_device(dev); | |
312 | if (IS_ERR(data)) | |
313 | return PTR_ERR(data); | |
314 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr][index], | |
315 | DIV_FROM_REG(data->fan_div[index]))); | |
1da177e4 | 316 | } |
1da177e4 | 317 | |
f8181762 JD |
318 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
319 | char *buf) | |
320 | { | |
321 | int nr = to_sensor_dev_attr(attr)->index; | |
322 | struct lm80_data *data = lm80_update_device(dev); | |
2faaa931 FM |
323 | if (IS_ERR(data)) |
324 | return PTR_ERR(data); | |
f8181762 | 325 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); |
1da177e4 | 326 | } |
1da177e4 | 327 | |
f8181762 JD |
328 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
329 | const char *buf, size_t count) | |
330 | { | |
85b3ee07 GR |
331 | int index = to_sensor_dev_attr_2(attr)->index; |
332 | int nr = to_sensor_dev_attr_2(attr)->nr; | |
118c9a61 GR |
333 | struct lm80_data *data = dev_get_drvdata(dev); |
334 | struct i2c_client *client = data->client; | |
6a9e7c4c FM |
335 | unsigned long val; |
336 | int err = kstrtoul(buf, 10, &val); | |
337 | if (err < 0) | |
338 | return err; | |
f8181762 JD |
339 | |
340 | mutex_lock(&data->update_lock); | |
85b3ee07 GR |
341 | data->fan[nr][index] = FAN_TO_REG(val, |
342 | DIV_FROM_REG(data->fan_div[index])); | |
343 | lm80_write_value(client, LM80_REG_FAN_MIN(index + 1), | |
344 | data->fan[nr][index]); | |
f8181762 JD |
345 | mutex_unlock(&data->update_lock); |
346 | return count; | |
1da177e4 | 347 | } |
1da177e4 | 348 | |
1160631b GR |
349 | /* |
350 | * Note: we save and restore the fan minimum here, because its value is | |
351 | * determined in part by the fan divisor. This follows the principle of | |
352 | * least surprise; the user doesn't expect the fan minimum to change just | |
353 | * because the divisor changed. | |
354 | */ | |
f8181762 JD |
355 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
356 | const char *buf, size_t count) | |
1da177e4 | 357 | { |
f8181762 | 358 | int nr = to_sensor_dev_attr(attr)->index; |
118c9a61 GR |
359 | struct lm80_data *data = dev_get_drvdata(dev); |
360 | struct i2c_client *client = data->client; | |
6a9e7c4c | 361 | unsigned long min, val; |
1da177e4 | 362 | u8 reg; |
c598b73b KL |
363 | int rv; |
364 | ||
365 | rv = kstrtoul(buf, 10, &val); | |
366 | if (rv < 0) | |
367 | return rv; | |
1da177e4 LT |
368 | |
369 | /* Save fan_min */ | |
9a61bf63 | 370 | mutex_lock(&data->update_lock); |
85b3ee07 | 371 | min = FAN_FROM_REG(data->fan[f_min][nr], |
1da177e4 LT |
372 | DIV_FROM_REG(data->fan_div[nr])); |
373 | ||
374 | switch (val) { | |
66b3b1f7 FM |
375 | case 1: |
376 | data->fan_div[nr] = 0; | |
377 | break; | |
378 | case 2: | |
379 | data->fan_div[nr] = 1; | |
380 | break; | |
381 | case 4: | |
382 | data->fan_div[nr] = 2; | |
383 | break; | |
384 | case 8: | |
385 | data->fan_div[nr] = 3; | |
386 | break; | |
1da177e4 | 387 | default: |
118c9a61 | 388 | dev_err(dev, |
b55f3757 GR |
389 | "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", |
390 | val); | |
9a61bf63 | 391 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
392 | return -EINVAL; |
393 | } | |
394 | ||
c598b73b | 395 | rv = lm80_read_value(client, LM80_REG_FANDIV); |
0c4770e9 WY |
396 | if (rv < 0) { |
397 | mutex_unlock(&data->update_lock); | |
c598b73b | 398 | return rv; |
0c4770e9 | 399 | } |
c598b73b KL |
400 | reg = (rv & ~(3 << (2 * (nr + 1)))) |
401 | | (data->fan_div[nr] << (2 * (nr + 1))); | |
1da177e4 LT |
402 | lm80_write_value(client, LM80_REG_FANDIV, reg); |
403 | ||
404 | /* Restore fan_min */ | |
85b3ee07 GR |
405 | data->fan[f_min][nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); |
406 | lm80_write_value(client, LM80_REG_FAN_MIN(nr + 1), | |
407 | data->fan[f_min][nr]); | |
9a61bf63 | 408 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
409 | |
410 | return count; | |
411 | } | |
412 | ||
9711bcdd GR |
413 | static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, |
414 | char *buf) | |
1da177e4 | 415 | { |
9711bcdd | 416 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 417 | struct lm80_data *data = lm80_update_device(dev); |
2faaa931 FM |
418 | if (IS_ERR(data)) |
419 | return PTR_ERR(data); | |
9711bcdd | 420 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index])); |
1da177e4 LT |
421 | } |
422 | ||
9711bcdd GR |
423 | static ssize_t set_temp(struct device *dev, struct device_attribute *devattr, |
424 | const char *buf, size_t count) | |
425 | { | |
426 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
427 | struct lm80_data *data = dev_get_drvdata(dev); | |
428 | struct i2c_client *client = data->client; | |
429 | int nr = attr->index; | |
430 | long val; | |
431 | int err = kstrtol(buf, 10, &val); | |
432 | if (err < 0) | |
433 | return err; | |
1da177e4 | 434 | |
9711bcdd GR |
435 | mutex_lock(&data->update_lock); |
436 | data->temp[nr] = TEMP_TO_REG(val); | |
437 | lm80_write_value(client, temp_regs[nr], data->temp[nr] >> 8); | |
438 | mutex_unlock(&data->update_lock); | |
439 | return count; | |
1da177e4 | 440 | } |
1da177e4 | 441 | |
1547690d | 442 | static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, |
6cc37ee5 | 443 | char *buf) |
1da177e4 LT |
444 | { |
445 | struct lm80_data *data = lm80_update_device(dev); | |
2faaa931 FM |
446 | if (IS_ERR(data)) |
447 | return PTR_ERR(data); | |
1da177e4 LT |
448 | return sprintf(buf, "%u\n", data->alarms); |
449 | } | |
450 | ||
e84542f5 JD |
451 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
452 | char *buf) | |
453 | { | |
454 | int bitnr = to_sensor_dev_attr(attr)->index; | |
455 | struct lm80_data *data = lm80_update_device(dev); | |
2faaa931 FM |
456 | if (IS_ERR(data)) |
457 | return PTR_ERR(data); | |
e84542f5 JD |
458 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); |
459 | } | |
460 | ||
1adf3a3e GR |
461 | static SENSOR_DEVICE_ATTR_2(in0_min, S_IWUSR | S_IRUGO, |
462 | show_in, set_in, i_min, 0); | |
463 | static SENSOR_DEVICE_ATTR_2(in1_min, S_IWUSR | S_IRUGO, | |
464 | show_in, set_in, i_min, 1); | |
465 | static SENSOR_DEVICE_ATTR_2(in2_min, S_IWUSR | S_IRUGO, | |
466 | show_in, set_in, i_min, 2); | |
467 | static SENSOR_DEVICE_ATTR_2(in3_min, S_IWUSR | S_IRUGO, | |
468 | show_in, set_in, i_min, 3); | |
469 | static SENSOR_DEVICE_ATTR_2(in4_min, S_IWUSR | S_IRUGO, | |
470 | show_in, set_in, i_min, 4); | |
471 | static SENSOR_DEVICE_ATTR_2(in5_min, S_IWUSR | S_IRUGO, | |
472 | show_in, set_in, i_min, 5); | |
473 | static SENSOR_DEVICE_ATTR_2(in6_min, S_IWUSR | S_IRUGO, | |
474 | show_in, set_in, i_min, 6); | |
475 | static SENSOR_DEVICE_ATTR_2(in0_max, S_IWUSR | S_IRUGO, | |
476 | show_in, set_in, i_max, 0); | |
477 | static SENSOR_DEVICE_ATTR_2(in1_max, S_IWUSR | S_IRUGO, | |
478 | show_in, set_in, i_max, 1); | |
479 | static SENSOR_DEVICE_ATTR_2(in2_max, S_IWUSR | S_IRUGO, | |
480 | show_in, set_in, i_max, 2); | |
481 | static SENSOR_DEVICE_ATTR_2(in3_max, S_IWUSR | S_IRUGO, | |
482 | show_in, set_in, i_max, 3); | |
483 | static SENSOR_DEVICE_ATTR_2(in4_max, S_IWUSR | S_IRUGO, | |
484 | show_in, set_in, i_max, 4); | |
485 | static SENSOR_DEVICE_ATTR_2(in5_max, S_IWUSR | S_IRUGO, | |
486 | show_in, set_in, i_max, 5); | |
487 | static SENSOR_DEVICE_ATTR_2(in6_max, S_IWUSR | S_IRUGO, | |
488 | show_in, set_in, i_max, 6); | |
489 | static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, i_input, 0); | |
490 | static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, i_input, 1); | |
491 | static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, i_input, 2); | |
492 | static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, i_input, 3); | |
493 | static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, i_input, 4); | |
494 | static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, i_input, 5); | |
495 | static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, i_input, 6); | |
85b3ee07 GR |
496 | static SENSOR_DEVICE_ATTR_2(fan1_min, S_IWUSR | S_IRUGO, |
497 | show_fan, set_fan_min, f_min, 0); | |
498 | static SENSOR_DEVICE_ATTR_2(fan2_min, S_IWUSR | S_IRUGO, | |
499 | show_fan, set_fan_min, f_min, 1); | |
500 | static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, f_input, 0); | |
501 | static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, f_input, 1); | |
f8181762 JD |
502 | static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO, |
503 | show_fan_div, set_fan_div, 0); | |
504 | static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO, | |
505 | show_fan_div, set_fan_div, 1); | |
9711bcdd GR |
506 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, t_input); |
507 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp, | |
508 | set_temp, t_hot_max); | |
509 | static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, show_temp, | |
510 | set_temp, t_hot_hyst); | |
511 | static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp, | |
512 | set_temp, t_os_max); | |
513 | static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp, | |
514 | set_temp, t_os_hyst); | |
1547690d | 515 | static DEVICE_ATTR_RO(alarms); |
e84542f5 JD |
516 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); |
517 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); | |
518 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); | |
519 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
520 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 4); | |
521 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 5); | |
522 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); | |
523 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10); | |
524 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11); | |
525 | static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 8); | |
526 | static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 13); | |
1da177e4 LT |
527 | |
528 | /* | |
529 | * Real code | |
530 | */ | |
531 | ||
118c9a61 | 532 | static struct attribute *lm80_attrs[] = { |
f8181762 JD |
533 | &sensor_dev_attr_in0_min.dev_attr.attr, |
534 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
535 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
536 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
537 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
538 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
539 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
540 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
541 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
542 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
543 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
544 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
545 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
546 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
547 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
548 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
549 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
550 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
551 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
552 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
553 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
554 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
555 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
556 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
557 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
558 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
559 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
9711bcdd GR |
560 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
561 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
562 | &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, | |
563 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
564 | &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, | |
0501a381 | 565 | &dev_attr_alarms.attr, |
e84542f5 JD |
566 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
567 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
568 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
569 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
570 | &sensor_dev_attr_in4_alarm.dev_attr.attr, | |
571 | &sensor_dev_attr_in5_alarm.dev_attr.attr, | |
572 | &sensor_dev_attr_in6_alarm.dev_attr.attr, | |
573 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, | |
574 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
575 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, | |
576 | &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, | |
0501a381 MH |
577 | NULL |
578 | }; | |
118c9a61 | 579 | ATTRIBUTE_GROUPS(lm80); |
0501a381 | 580 | |
8c8bacc8 | 581 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 582 | static int lm80_detect(struct i2c_client *client, struct i2c_board_info *info) |
1da177e4 | 583 | { |
8c8bacc8 | 584 | struct i2c_adapter *adapter = client->adapter; |
9908ad4c JD |
585 | int i, cur, man_id, dev_id; |
586 | const char *name = NULL; | |
1da177e4 LT |
587 | |
588 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
8c8bacc8 | 589 | return -ENODEV; |
1da177e4 | 590 | |
9908ad4c JD |
591 | /* First check for unused bits, common to both chip types */ |
592 | if ((lm80_read_value(client, LM80_REG_ALARM2) & 0xc0) | |
593 | || (lm80_read_value(client, LM80_REG_CONFIG) & 0x80)) | |
8c8bacc8 | 594 | return -ENODEV; |
9908ad4c JD |
595 | |
596 | /* | |
597 | * The LM96080 has manufacturer and stepping/die rev registers so we | |
598 | * can just check that. The LM80 does not have such registers so we | |
599 | * have to use a more expensive trick. | |
600 | */ | |
601 | man_id = lm80_read_value(client, LM96080_REG_MAN_ID); | |
602 | dev_id = lm80_read_value(client, LM96080_REG_DEV_ID); | |
603 | if (man_id == 0x01 && dev_id == 0x08) { | |
604 | /* Check more unused bits for confirmation */ | |
605 | if (lm80_read_value(client, LM96080_REG_CONV_RATE) & 0xfe) | |
66b3b1f7 | 606 | return -ENODEV; |
9908ad4c JD |
607 | |
608 | name = "lm96080"; | |
609 | } else { | |
610 | /* Check 6-bit addressing */ | |
611 | for (i = 0x2a; i <= 0x3d; i++) { | |
612 | cur = i2c_smbus_read_byte_data(client, i); | |
613 | if ((i2c_smbus_read_byte_data(client, i + 0x40) != cur) | |
614 | || (i2c_smbus_read_byte_data(client, i + 0x80) != cur) | |
615 | || (i2c_smbus_read_byte_data(client, i + 0xc0) != cur)) | |
616 | return -ENODEV; | |
617 | } | |
618 | ||
619 | name = "lm80"; | |
1da177e4 LT |
620 | } |
621 | ||
9908ad4c | 622 | strlcpy(info->type, name, I2C_NAME_SIZE); |
1da177e4 | 623 | |
8c8bacc8 JD |
624 | return 0; |
625 | } | |
1da177e4 | 626 | |
8c8bacc8 JD |
627 | static int lm80_probe(struct i2c_client *client, |
628 | const struct i2c_device_id *id) | |
629 | { | |
118c9a61 GR |
630 | struct device *dev = &client->dev; |
631 | struct device *hwmon_dev; | |
8c8bacc8 | 632 | struct lm80_data *data; |
0c057e35 | 633 | int rv; |
8c8bacc8 | 634 | |
118c9a61 | 635 | data = devm_kzalloc(dev, sizeof(struct lm80_data), GFP_KERNEL); |
c38b2820 GR |
636 | if (!data) |
637 | return -ENOMEM; | |
8c8bacc8 | 638 | |
118c9a61 | 639 | data->client = client; |
8c8bacc8 | 640 | mutex_init(&data->update_lock); |
1da177e4 LT |
641 | |
642 | /* Initialize the LM80 chip */ | |
6cc37ee5 | 643 | lm80_init_client(client); |
1da177e4 LT |
644 | |
645 | /* A few vars need to be filled upon startup */ | |
0c057e35 KL |
646 | rv = lm80_read_value(client, LM80_REG_FAN_MIN(1)); |
647 | if (rv < 0) | |
648 | return rv; | |
649 | data->fan[f_min][0] = rv; | |
650 | rv = lm80_read_value(client, LM80_REG_FAN_MIN(2)); | |
651 | if (rv < 0) | |
652 | return rv; | |
653 | data->fan[f_min][1] = rv; | |
1da177e4 | 654 | |
118c9a61 GR |
655 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
656 | data, lm80_groups); | |
943b0830 | 657 | |
118c9a61 | 658 | return PTR_ERR_OR_ZERO(hwmon_dev); |
1da177e4 LT |
659 | } |
660 | ||
c254ffde GR |
661 | /* |
662 | * Driver data (common to all clients) | |
663 | */ | |
1da177e4 | 664 | |
c254ffde GR |
665 | static const struct i2c_device_id lm80_id[] = { |
666 | { "lm80", 0 }, | |
667 | { "lm96080", 1 }, | |
668 | { } | |
669 | }; | |
670 | MODULE_DEVICE_TABLE(i2c, lm80_id); | |
1da177e4 | 671 | |
c254ffde GR |
672 | static struct i2c_driver lm80_driver = { |
673 | .class = I2C_CLASS_HWMON, | |
674 | .driver = { | |
675 | .name = "lm80", | |
676 | }, | |
677 | .probe = lm80_probe, | |
678 | .id_table = lm80_id, | |
679 | .detect = lm80_detect, | |
680 | .address_list = normal_i2c, | |
681 | }; | |
1da177e4 | 682 | |
f0967eea | 683 | module_i2c_driver(lm80_driver); |
1da177e4 LT |
684 | |
685 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and " | |
686 | "Philip Edelbrock <phil@netroedge.com>"); | |
687 | MODULE_DESCRIPTION("LM80 driver"); | |
688 | MODULE_LICENSE("GPL"); |