Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * lm63.c - driver for the National Semiconductor LM63 temperature sensor | |
3 | * with integrated fan control | |
d5957be2 | 4 | * Copyright (C) 2004-2008 Jean Delvare <khali@linux-fr.org> |
1da177e4 LT |
5 | * Based on the lm90 driver. |
6 | * | |
7 | * The LM63 is a sensor chip made by National Semiconductor. It measures | |
8 | * two temperatures (its own and one external one) and the speed of one | |
9 | * fan, those speed it can additionally control. Complete datasheet can be | |
10 | * obtained from National's website at: | |
11 | * http://www.national.com/pf/LM/LM63.html | |
12 | * | |
13 | * The LM63 is basically an LM86 with fan speed monitoring and control | |
14 | * capabilities added. It misses some of the LM86 features though: | |
15 | * - No low limit for local temperature. | |
16 | * - No critical limit for local temperature. | |
17 | * - Critical limit for remote temperature can be changed only once. We | |
18 | * will consider that the critical limit is read-only. | |
19 | * | |
20 | * The datasheet isn't very clear about what the tachometer reading is. | |
21 | * I had a explanation from National Semiconductor though. The two lower | |
22 | * bits of the read value have to be masked out. The value is still 16 bit | |
23 | * in width. | |
24 | * | |
25 | * This program is free software; you can redistribute it and/or modify | |
26 | * it under the terms of the GNU General Public License as published by | |
27 | * the Free Software Foundation; either version 2 of the License, or | |
28 | * (at your option) any later version. | |
29 | * | |
30 | * This program is distributed in the hope that it will be useful, | |
31 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
32 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
33 | * GNU General Public License for more details. | |
34 | * | |
35 | * You should have received a copy of the GNU General Public License | |
36 | * along with this program; if not, write to the Free Software | |
37 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
38 | */ | |
39 | ||
1da177e4 LT |
40 | #include <linux/module.h> |
41 | #include <linux/init.h> | |
42 | #include <linux/slab.h> | |
43 | #include <linux/jiffies.h> | |
44 | #include <linux/i2c.h> | |
10c08f81 | 45 | #include <linux/hwmon-sysfs.h> |
943b0830 MH |
46 | #include <linux/hwmon.h> |
47 | #include <linux/err.h> | |
9a61bf63 | 48 | #include <linux/mutex.h> |
0e39e01c | 49 | #include <linux/sysfs.h> |
210961c4 | 50 | #include <linux/types.h> |
1da177e4 LT |
51 | |
52 | /* | |
53 | * Addresses to scan | |
54 | * Address is fully defined internally and cannot be changed. | |
55 | */ | |
56 | ||
10f2ed31 | 57 | static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END }; |
1da177e4 | 58 | |
1da177e4 LT |
59 | /* |
60 | * The LM63 registers | |
61 | */ | |
62 | ||
63 | #define LM63_REG_CONFIG1 0x03 | |
64 | #define LM63_REG_CONFIG2 0xBF | |
65 | #define LM63_REG_CONFIG_FAN 0x4A | |
66 | ||
67 | #define LM63_REG_TACH_COUNT_MSB 0x47 | |
68 | #define LM63_REG_TACH_COUNT_LSB 0x46 | |
69 | #define LM63_REG_TACH_LIMIT_MSB 0x49 | |
70 | #define LM63_REG_TACH_LIMIT_LSB 0x48 | |
71 | ||
72 | #define LM63_REG_PWM_VALUE 0x4C | |
73 | #define LM63_REG_PWM_FREQ 0x4D | |
74 | ||
75 | #define LM63_REG_LOCAL_TEMP 0x00 | |
76 | #define LM63_REG_LOCAL_HIGH 0x05 | |
77 | ||
78 | #define LM63_REG_REMOTE_TEMP_MSB 0x01 | |
79 | #define LM63_REG_REMOTE_TEMP_LSB 0x10 | |
80 | #define LM63_REG_REMOTE_OFFSET_MSB 0x11 | |
81 | #define LM63_REG_REMOTE_OFFSET_LSB 0x12 | |
82 | #define LM63_REG_REMOTE_HIGH_MSB 0x07 | |
83 | #define LM63_REG_REMOTE_HIGH_LSB 0x13 | |
84 | #define LM63_REG_REMOTE_LOW_MSB 0x08 | |
85 | #define LM63_REG_REMOTE_LOW_LSB 0x14 | |
86 | #define LM63_REG_REMOTE_TCRIT 0x19 | |
87 | #define LM63_REG_REMOTE_TCRIT_HYST 0x21 | |
88 | ||
89 | #define LM63_REG_ALERT_STATUS 0x02 | |
90 | #define LM63_REG_ALERT_MASK 0x16 | |
91 | ||
92 | #define LM63_REG_MAN_ID 0xFE | |
93 | #define LM63_REG_CHIP_ID 0xFF | |
94 | ||
210961c4 GR |
95 | #define LM96163_REG_CONFIG_ENHANCED 0x45 |
96 | ||
1da177e4 LT |
97 | /* |
98 | * Conversions and various macros | |
99 | * For tachometer counts, the LM63 uses 16-bit values. | |
100 | * For local temperature and high limit, remote critical limit and hysteresis | |
44bbe87e | 101 | * value, it uses signed 8-bit values with LSB = 1 degree Celsius. |
1da177e4 | 102 | * For remote temperature, low and high limits, it uses signed 11-bit values |
44bbe87e | 103 | * with LSB = 0.125 degree Celsius, left-justified in 16-bit registers. |
2778fb13 DE |
104 | * For LM64 the actual remote diode temperature is 16 degree Celsius higher |
105 | * than the register reading. Remote temperature setpoints have to be | |
106 | * adapted accordingly. | |
1da177e4 LT |
107 | */ |
108 | ||
109 | #define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \ | |
110 | 5400000 / (reg)) | |
111 | #define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \ | |
112 | (5400000 / (val)) & 0xFFFC) | |
113 | #define TEMP8_FROM_REG(reg) ((reg) * 1000) | |
114 | #define TEMP8_TO_REG(val) ((val) <= -128000 ? -128 : \ | |
115 | (val) >= 127000 ? 127 : \ | |
116 | (val) < 0 ? ((val) - 500) / 1000 : \ | |
117 | ((val) + 500) / 1000) | |
118 | #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) | |
119 | #define TEMP11_TO_REG(val) ((val) <= -128000 ? 0x8000 : \ | |
120 | (val) >= 127875 ? 0x7FE0 : \ | |
121 | (val) < 0 ? ((val) - 62) / 125 * 32 : \ | |
122 | ((val) + 62) / 125 * 32) | |
123 | #define HYST_TO_REG(val) ((val) <= 0 ? 0 : \ | |
124 | (val) >= 127000 ? 127 : \ | |
125 | ((val) + 500) / 1000) | |
126 | ||
127 | /* | |
128 | * Functions declaration | |
129 | */ | |
130 | ||
d5957be2 JD |
131 | static int lm63_probe(struct i2c_client *client, |
132 | const struct i2c_device_id *id); | |
133 | static int lm63_remove(struct i2c_client *client); | |
1da177e4 LT |
134 | |
135 | static struct lm63_data *lm63_update_device(struct device *dev); | |
136 | ||
310ec792 | 137 | static int lm63_detect(struct i2c_client *client, struct i2c_board_info *info); |
1da177e4 LT |
138 | static void lm63_init_client(struct i2c_client *client); |
139 | ||
210961c4 | 140 | enum chips { lm63, lm64, lm96163 }; |
10f2ed31 | 141 | |
1da177e4 LT |
142 | /* |
143 | * Driver data (common to all clients) | |
144 | */ | |
145 | ||
d5957be2 | 146 | static const struct i2c_device_id lm63_id[] = { |
10f2ed31 MG |
147 | { "lm63", lm63 }, |
148 | { "lm64", lm64 }, | |
210961c4 | 149 | { "lm96163", lm96163 }, |
d5957be2 JD |
150 | { } |
151 | }; | |
152 | MODULE_DEVICE_TABLE(i2c, lm63_id); | |
153 | ||
1da177e4 | 154 | static struct i2c_driver lm63_driver = { |
d5957be2 | 155 | .class = I2C_CLASS_HWMON, |
cdaf7934 | 156 | .driver = { |
cdaf7934 LR |
157 | .name = "lm63", |
158 | }, | |
d5957be2 JD |
159 | .probe = lm63_probe, |
160 | .remove = lm63_remove, | |
161 | .id_table = lm63_id, | |
162 | .detect = lm63_detect, | |
c3813d6a | 163 | .address_list = normal_i2c, |
1da177e4 LT |
164 | }; |
165 | ||
166 | /* | |
167 | * Client data (each client gets its own) | |
168 | */ | |
169 | ||
170 | struct lm63_data { | |
1beeffe4 | 171 | struct device *hwmon_dev; |
9a61bf63 | 172 | struct mutex update_lock; |
1da177e4 LT |
173 | char valid; /* zero until following fields are valid */ |
174 | unsigned long last_updated; /* in jiffies */ | |
2778fb13 DE |
175 | int kind; |
176 | int temp2_offset; | |
1da177e4 LT |
177 | |
178 | /* registers values */ | |
179 | u8 config, config_fan; | |
bc51ae11 JD |
180 | u16 fan[2]; /* 0: input |
181 | 1: low limit */ | |
1da177e4 LT |
182 | u8 pwm1_freq; |
183 | u8 pwm1_value; | |
bc51ae11 JD |
184 | s8 temp8[3]; /* 0: local input |
185 | 1: local high limit | |
186 | 2: remote critical limit */ | |
786375f7 | 187 | s16 temp11[4]; /* 0: remote input |
bc51ae11 | 188 | 1: remote low limit |
786375f7 GR |
189 | 2: remote high limit |
190 | 3: remote offset */ | |
1da177e4 LT |
191 | u8 temp2_crit_hyst; |
192 | u8 alarms; | |
210961c4 | 193 | bool pwm_highres; |
1da177e4 LT |
194 | }; |
195 | ||
196 | /* | |
197 | * Sysfs callback functions and files | |
198 | */ | |
199 | ||
bc51ae11 JD |
200 | static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, |
201 | char *buf) | |
202 | { | |
203 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
204 | struct lm63_data *data = lm63_update_device(dev); | |
205 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index])); | |
1da177e4 | 206 | } |
1da177e4 | 207 | |
bc51ae11 JD |
208 | static ssize_t set_fan(struct device *dev, struct device_attribute *dummy, |
209 | const char *buf, size_t count) | |
1da177e4 LT |
210 | { |
211 | struct i2c_client *client = to_i2c_client(dev); | |
212 | struct lm63_data *data = i2c_get_clientdata(client); | |
662bda28 GR |
213 | unsigned long val; |
214 | int err; | |
215 | ||
216 | err = kstrtoul(buf, 10, &val); | |
217 | if (err) | |
218 | return err; | |
1da177e4 | 219 | |
9a61bf63 | 220 | mutex_lock(&data->update_lock); |
bc51ae11 | 221 | data->fan[1] = FAN_TO_REG(val); |
1da177e4 | 222 | i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB, |
bc51ae11 | 223 | data->fan[1] & 0xFF); |
1da177e4 | 224 | i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB, |
bc51ae11 | 225 | data->fan[1] >> 8); |
9a61bf63 | 226 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
227 | return count; |
228 | } | |
229 | ||
bc51ae11 JD |
230 | static ssize_t show_pwm1(struct device *dev, struct device_attribute *dummy, |
231 | char *buf) | |
1da177e4 LT |
232 | { |
233 | struct lm63_data *data = lm63_update_device(dev); | |
210961c4 GR |
234 | int pwm; |
235 | ||
236 | if (data->pwm_highres) | |
237 | pwm = data->pwm1_value; | |
238 | else | |
239 | pwm = data->pwm1_value >= 2 * data->pwm1_freq ? | |
1da177e4 | 240 | 255 : (data->pwm1_value * 255 + data->pwm1_freq) / |
210961c4 GR |
241 | (2 * data->pwm1_freq); |
242 | ||
243 | return sprintf(buf, "%d\n", pwm); | |
1da177e4 LT |
244 | } |
245 | ||
bc51ae11 JD |
246 | static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy, |
247 | const char *buf, size_t count) | |
1da177e4 LT |
248 | { |
249 | struct i2c_client *client = to_i2c_client(dev); | |
250 | struct lm63_data *data = i2c_get_clientdata(client); | |
251 | unsigned long val; | |
662bda28 GR |
252 | int err; |
253 | ||
1da177e4 LT |
254 | if (!(data->config_fan & 0x20)) /* register is read-only */ |
255 | return -EPERM; | |
256 | ||
662bda28 GR |
257 | err = kstrtoul(buf, 10, &val); |
258 | if (err) | |
259 | return err; | |
260 | ||
210961c4 | 261 | val = SENSORS_LIMIT(val, 0, 255); |
9a61bf63 | 262 | mutex_lock(&data->update_lock); |
210961c4 | 263 | data->pwm1_value = data->pwm_highres ? val : |
1da177e4 LT |
264 | (val * data->pwm1_freq * 2 + 127) / 255; |
265 | i2c_smbus_write_byte_data(client, LM63_REG_PWM_VALUE, data->pwm1_value); | |
9a61bf63 | 266 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
267 | return count; |
268 | } | |
269 | ||
662bda28 GR |
270 | static ssize_t show_pwm1_enable(struct device *dev, |
271 | struct device_attribute *dummy, char *buf) | |
1da177e4 LT |
272 | { |
273 | struct lm63_data *data = lm63_update_device(dev); | |
274 | return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2); | |
275 | } | |
276 | ||
2778fb13 DE |
277 | /* |
278 | * There are 8bit registers for both local(temp1) and remote(temp2) sensor. | |
279 | * For remote sensor registers temp2_offset has to be considered, | |
280 | * for local sensor it must not. | |
281 | * So we need separate 8bit accessors for local and remote sensor. | |
282 | */ | |
283 | static ssize_t show_local_temp8(struct device *dev, | |
284 | struct device_attribute *devattr, | |
285 | char *buf) | |
bc51ae11 JD |
286 | { |
287 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
288 | struct lm63_data *data = lm63_update_device(dev); | |
289 | return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index])); | |
1da177e4 | 290 | } |
bc51ae11 | 291 | |
2778fb13 DE |
292 | static ssize_t show_remote_temp8(struct device *dev, |
293 | struct device_attribute *devattr, | |
294 | char *buf) | |
295 | { | |
296 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
297 | struct lm63_data *data = lm63_update_device(dev); | |
298 | return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index]) | |
299 | + data->temp2_offset); | |
300 | } | |
301 | ||
302 | static ssize_t set_local_temp8(struct device *dev, | |
303 | struct device_attribute *dummy, | |
304 | const char *buf, size_t count) | |
bc51ae11 JD |
305 | { |
306 | struct i2c_client *client = to_i2c_client(dev); | |
307 | struct lm63_data *data = i2c_get_clientdata(client); | |
662bda28 GR |
308 | long val; |
309 | int err; | |
310 | ||
311 | err = kstrtol(buf, 10, &val); | |
312 | if (err) | |
313 | return err; | |
bc51ae11 | 314 | |
9a61bf63 | 315 | mutex_lock(&data->update_lock); |
bc51ae11 JD |
316 | data->temp8[1] = TEMP8_TO_REG(val); |
317 | i2c_smbus_write_byte_data(client, LM63_REG_LOCAL_HIGH, data->temp8[1]); | |
9a61bf63 | 318 | mutex_unlock(&data->update_lock); |
bc51ae11 | 319 | return count; |
1da177e4 | 320 | } |
bc51ae11 JD |
321 | |
322 | static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, | |
323 | char *buf) | |
324 | { | |
325 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
326 | struct lm63_data *data = lm63_update_device(dev); | |
2778fb13 DE |
327 | return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[attr->index]) |
328 | + data->temp2_offset); | |
1da177e4 | 329 | } |
bc51ae11 JD |
330 | |
331 | static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, | |
332 | const char *buf, size_t count) | |
333 | { | |
786375f7 | 334 | static const u8 reg[6] = { |
bc51ae11 JD |
335 | LM63_REG_REMOTE_LOW_MSB, |
336 | LM63_REG_REMOTE_LOW_LSB, | |
337 | LM63_REG_REMOTE_HIGH_MSB, | |
338 | LM63_REG_REMOTE_HIGH_LSB, | |
786375f7 GR |
339 | LM63_REG_REMOTE_OFFSET_MSB, |
340 | LM63_REG_REMOTE_OFFSET_LSB, | |
bc51ae11 JD |
341 | }; |
342 | ||
343 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
344 | struct i2c_client *client = to_i2c_client(dev); | |
345 | struct lm63_data *data = i2c_get_clientdata(client); | |
662bda28 GR |
346 | long val; |
347 | int err; | |
bc51ae11 JD |
348 | int nr = attr->index; |
349 | ||
662bda28 GR |
350 | err = kstrtol(buf, 10, &val); |
351 | if (err) | |
352 | return err; | |
353 | ||
9a61bf63 | 354 | mutex_lock(&data->update_lock); |
2778fb13 | 355 | data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset); |
bc51ae11 JD |
356 | i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], |
357 | data->temp11[nr] >> 8); | |
358 | i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], | |
359 | data->temp11[nr] & 0xff); | |
9a61bf63 | 360 | mutex_unlock(&data->update_lock); |
bc51ae11 | 361 | return count; |
1da177e4 | 362 | } |
1da177e4 | 363 | |
662bda28 GR |
364 | /* |
365 | * Hysteresis register holds a relative value, while we want to present | |
366 | * an absolute to user-space | |
367 | */ | |
368 | static ssize_t show_temp2_crit_hyst(struct device *dev, | |
369 | struct device_attribute *dummy, char *buf) | |
1da177e4 LT |
370 | { |
371 | struct lm63_data *data = lm63_update_device(dev); | |
bc51ae11 | 372 | return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[2]) |
2778fb13 | 373 | + data->temp2_offset |
1da177e4 LT |
374 | - TEMP8_FROM_REG(data->temp2_crit_hyst)); |
375 | } | |
376 | ||
662bda28 GR |
377 | /* |
378 | * And now the other way around, user-space provides an absolute | |
379 | * hysteresis value and we have to store a relative one | |
380 | */ | |
381 | static ssize_t set_temp2_crit_hyst(struct device *dev, | |
382 | struct device_attribute *dummy, | |
bc51ae11 | 383 | const char *buf, size_t count) |
1da177e4 LT |
384 | { |
385 | struct i2c_client *client = to_i2c_client(dev); | |
386 | struct lm63_data *data = i2c_get_clientdata(client); | |
662bda28 GR |
387 | long val; |
388 | int err; | |
1da177e4 LT |
389 | long hyst; |
390 | ||
662bda28 GR |
391 | err = kstrtol(buf, 10, &val); |
392 | if (err) | |
393 | return err; | |
394 | ||
9a61bf63 | 395 | mutex_lock(&data->update_lock); |
2778fb13 | 396 | hyst = TEMP8_FROM_REG(data->temp8[2]) + data->temp2_offset - val; |
1da177e4 LT |
397 | i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST, |
398 | HYST_TO_REG(hyst)); | |
9a61bf63 | 399 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
400 | return count; |
401 | } | |
402 | ||
bc51ae11 JD |
403 | static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy, |
404 | char *buf) | |
1da177e4 LT |
405 | { |
406 | struct lm63_data *data = lm63_update_device(dev); | |
407 | return sprintf(buf, "%u\n", data->alarms); | |
408 | } | |
409 | ||
2d45771e JD |
410 | static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr, |
411 | char *buf) | |
412 | { | |
413 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
414 | struct lm63_data *data = lm63_update_device(dev); | |
415 | int bitnr = attr->index; | |
416 | ||
417 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
418 | } | |
419 | ||
bc51ae11 JD |
420 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); |
421 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan, | |
422 | set_fan, 1); | |
1da177e4 LT |
423 | |
424 | static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1); | |
425 | static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL); | |
426 | ||
2778fb13 DE |
427 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0); |
428 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8, | |
429 | set_local_temp8, 1); | |
1da177e4 | 430 | |
bc51ae11 JD |
431 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0); |
432 | static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, | |
433 | set_temp11, 1); | |
434 | static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11, | |
435 | set_temp11, 2); | |
786375f7 GR |
436 | static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11, |
437 | set_temp11, 3); | |
2778fb13 DE |
438 | /* |
439 | * On LM63, temp2_crit can be set only once, which should be job | |
440 | * of the bootloader. | |
441 | */ | |
442 | static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8, | |
443 | NULL, 2); | |
1da177e4 LT |
444 | static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst, |
445 | set_temp2_crit_hyst); | |
446 | ||
2d45771e JD |
447 | /* Individual alarm files */ |
448 | static SENSOR_DEVICE_ATTR(fan1_min_alarm, S_IRUGO, show_alarm, NULL, 0); | |
449 | static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1); | |
7817a39e | 450 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2); |
2d45771e JD |
451 | static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3); |
452 | static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4); | |
453 | static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6); | |
454 | /* Raw alarm file for compatibility */ | |
1da177e4 LT |
455 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
456 | ||
0e39e01c JD |
457 | static struct attribute *lm63_attributes[] = { |
458 | &dev_attr_pwm1.attr, | |
459 | &dev_attr_pwm1_enable.attr, | |
460 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
461 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
462 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
463 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
464 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
786375f7 | 465 | &sensor_dev_attr_temp2_offset.dev_attr.attr, |
0e39e01c JD |
466 | &sensor_dev_attr_temp2_crit.dev_attr.attr, |
467 | &dev_attr_temp2_crit_hyst.attr, | |
468 | ||
469 | &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, | |
7817a39e | 470 | &sensor_dev_attr_temp2_fault.dev_attr.attr, |
0e39e01c JD |
471 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, |
472 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, | |
473 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, | |
474 | &dev_attr_alarms.attr, | |
475 | NULL | |
476 | }; | |
477 | ||
478 | static const struct attribute_group lm63_group = { | |
479 | .attrs = lm63_attributes, | |
480 | }; | |
481 | ||
482 | static struct attribute *lm63_attributes_fan1[] = { | |
483 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
484 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
485 | ||
486 | &sensor_dev_attr_fan1_min_alarm.dev_attr.attr, | |
487 | NULL | |
488 | }; | |
489 | ||
490 | static const struct attribute_group lm63_group_fan1 = { | |
491 | .attrs = lm63_attributes_fan1, | |
492 | }; | |
493 | ||
1da177e4 LT |
494 | /* |
495 | * Real code | |
496 | */ | |
497 | ||
d5957be2 | 498 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 499 | static int lm63_detect(struct i2c_client *new_client, |
d5957be2 | 500 | struct i2c_board_info *info) |
1da177e4 | 501 | { |
d5957be2 | 502 | struct i2c_adapter *adapter = new_client->adapter; |
52df6440 JD |
503 | u8 man_id, chip_id, reg_config1, reg_config2; |
504 | u8 reg_alert_status, reg_alert_mask; | |
10f2ed31 | 505 | int address = new_client->addr; |
1da177e4 LT |
506 | |
507 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
d5957be2 | 508 | return -ENODEV; |
1da177e4 | 509 | |
52df6440 JD |
510 | man_id = i2c_smbus_read_byte_data(new_client, LM63_REG_MAN_ID); |
511 | chip_id = i2c_smbus_read_byte_data(new_client, LM63_REG_CHIP_ID); | |
512 | ||
513 | reg_config1 = i2c_smbus_read_byte_data(new_client, | |
514 | LM63_REG_CONFIG1); | |
515 | reg_config2 = i2c_smbus_read_byte_data(new_client, | |
516 | LM63_REG_CONFIG2); | |
517 | reg_alert_status = i2c_smbus_read_byte_data(new_client, | |
518 | LM63_REG_ALERT_STATUS); | |
519 | reg_alert_mask = i2c_smbus_read_byte_data(new_client, | |
520 | LM63_REG_ALERT_MASK); | |
521 | ||
522 | if (man_id != 0x01 /* National Semiconductor */ | |
52df6440 JD |
523 | || (reg_config1 & 0x18) != 0x00 |
524 | || (reg_config2 & 0xF8) != 0x00 | |
525 | || (reg_alert_status & 0x20) != 0x00 | |
526 | || (reg_alert_mask & 0xA4) != 0xA4) { | |
527 | dev_dbg(&adapter->dev, | |
528 | "Unsupported chip (man_id=0x%02X, chip_id=0x%02X)\n", | |
529 | man_id, chip_id); | |
530 | return -ENODEV; | |
1da177e4 LT |
531 | } |
532 | ||
10f2ed31 MG |
533 | if (chip_id == 0x41 && address == 0x4c) |
534 | strlcpy(info->type, "lm63", I2C_NAME_SIZE); | |
535 | else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e)) | |
536 | strlcpy(info->type, "lm64", I2C_NAME_SIZE); | |
210961c4 GR |
537 | else if (chip_id == 0x49 && address == 0x4c) |
538 | strlcpy(info->type, "lm96163", I2C_NAME_SIZE); | |
10f2ed31 MG |
539 | else |
540 | return -ENODEV; | |
d5957be2 JD |
541 | |
542 | return 0; | |
543 | } | |
544 | ||
545 | static int lm63_probe(struct i2c_client *new_client, | |
546 | const struct i2c_device_id *id) | |
547 | { | |
548 | struct lm63_data *data; | |
549 | int err; | |
550 | ||
551 | data = kzalloc(sizeof(struct lm63_data), GFP_KERNEL); | |
552 | if (!data) { | |
553 | err = -ENOMEM; | |
554 | goto exit; | |
555 | } | |
556 | ||
557 | i2c_set_clientdata(new_client, data); | |
1da177e4 | 558 | data->valid = 0; |
9a61bf63 | 559 | mutex_init(&data->update_lock); |
1da177e4 | 560 | |
2778fb13 DE |
561 | /* Set the device type */ |
562 | data->kind = id->driver_data; | |
563 | if (data->kind == lm64) | |
564 | data->temp2_offset = 16000; | |
565 | ||
566 | /* Initialize chip */ | |
1da177e4 LT |
567 | lm63_init_client(new_client); |
568 | ||
569 | /* Register sysfs hooks */ | |
662bda28 GR |
570 | err = sysfs_create_group(&new_client->dev.kobj, &lm63_group); |
571 | if (err) | |
d5957be2 | 572 | goto exit_free; |
0e39e01c | 573 | if (data->config & 0x04) { /* tachometer enabled */ |
662bda28 GR |
574 | err = sysfs_create_group(&new_client->dev.kobj, |
575 | &lm63_group_fan1); | |
576 | if (err) | |
0e39e01c | 577 | goto exit_remove_files; |
943b0830 MH |
578 | } |
579 | ||
1beeffe4 TJ |
580 | data->hwmon_dev = hwmon_device_register(&new_client->dev); |
581 | if (IS_ERR(data->hwmon_dev)) { | |
582 | err = PTR_ERR(data->hwmon_dev); | |
0e39e01c | 583 | goto exit_remove_files; |
1da177e4 | 584 | } |
1da177e4 LT |
585 | |
586 | return 0; | |
587 | ||
0e39e01c JD |
588 | exit_remove_files: |
589 | sysfs_remove_group(&new_client->dev.kobj, &lm63_group); | |
590 | sysfs_remove_group(&new_client->dev.kobj, &lm63_group_fan1); | |
1da177e4 LT |
591 | exit_free: |
592 | kfree(data); | |
593 | exit: | |
594 | return err; | |
595 | } | |
596 | ||
662bda28 GR |
597 | /* |
598 | * Ideally we shouldn't have to initialize anything, since the BIOS | |
599 | * should have taken care of everything | |
600 | */ | |
1da177e4 LT |
601 | static void lm63_init_client(struct i2c_client *client) |
602 | { | |
603 | struct lm63_data *data = i2c_get_clientdata(client); | |
604 | ||
605 | data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); | |
606 | data->config_fan = i2c_smbus_read_byte_data(client, | |
607 | LM63_REG_CONFIG_FAN); | |
608 | ||
609 | /* Start converting if needed */ | |
610 | if (data->config & 0x40) { /* standby */ | |
898eb71c | 611 | dev_dbg(&client->dev, "Switching to operational mode\n"); |
1da177e4 LT |
612 | data->config &= 0xA7; |
613 | i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1, | |
614 | data->config); | |
615 | } | |
616 | ||
617 | /* We may need pwm1_freq before ever updating the client data */ | |
618 | data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ); | |
619 | if (data->pwm1_freq == 0) | |
620 | data->pwm1_freq = 1; | |
621 | ||
210961c4 GR |
622 | /* |
623 | * For LM96163, check if high resolution PWM is enabled. | |
624 | * Also, check if unsigned temperature format is enabled | |
625 | * and display a warning message if it is. | |
626 | */ | |
627 | if (data->kind == lm96163) { | |
628 | u8 config_enhanced | |
629 | = i2c_smbus_read_byte_data(client, | |
630 | LM96163_REG_CONFIG_ENHANCED); | |
631 | if ((config_enhanced & 0x10) | |
632 | && !(data->config_fan & 0x08) && data->pwm1_freq == 8) | |
633 | data->pwm_highres = true; | |
634 | if (config_enhanced & 0x08) | |
635 | dev_warn(&client->dev, | |
636 | "Unsigned format for High and Crit setpoints enabled but not supported by driver\n"); | |
637 | } | |
638 | ||
1da177e4 LT |
639 | /* Show some debug info about the LM63 configuration */ |
640 | dev_dbg(&client->dev, "Alert/tach pin configured for %s\n", | |
641 | (data->config & 0x04) ? "tachometer input" : | |
642 | "alert output"); | |
643 | dev_dbg(&client->dev, "PWM clock %s kHz, output frequency %u Hz\n", | |
644 | (data->config_fan & 0x08) ? "1.4" : "360", | |
645 | ((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq); | |
646 | dev_dbg(&client->dev, "PWM output active %s, %s mode\n", | |
647 | (data->config_fan & 0x10) ? "low" : "high", | |
648 | (data->config_fan & 0x20) ? "manual" : "auto"); | |
649 | } | |
650 | ||
d5957be2 | 651 | static int lm63_remove(struct i2c_client *client) |
1da177e4 | 652 | { |
943b0830 | 653 | struct lm63_data *data = i2c_get_clientdata(client); |
1da177e4 | 654 | |
1beeffe4 | 655 | hwmon_device_unregister(data->hwmon_dev); |
0e39e01c JD |
656 | sysfs_remove_group(&client->dev.kobj, &lm63_group); |
657 | sysfs_remove_group(&client->dev.kobj, &lm63_group_fan1); | |
943b0830 | 658 | |
943b0830 | 659 | kfree(data); |
1da177e4 LT |
660 | return 0; |
661 | } | |
662 | ||
663 | static struct lm63_data *lm63_update_device(struct device *dev) | |
664 | { | |
665 | struct i2c_client *client = to_i2c_client(dev); | |
666 | struct lm63_data *data = i2c_get_clientdata(client); | |
667 | ||
9a61bf63 | 668 | mutex_lock(&data->update_lock); |
1da177e4 LT |
669 | |
670 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { | |
671 | if (data->config & 0x04) { /* tachometer enabled */ | |
672 | /* order matters for fan1_input */ | |
bc51ae11 JD |
673 | data->fan[0] = i2c_smbus_read_byte_data(client, |
674 | LM63_REG_TACH_COUNT_LSB) & 0xFC; | |
675 | data->fan[0] |= i2c_smbus_read_byte_data(client, | |
676 | LM63_REG_TACH_COUNT_MSB) << 8; | |
677 | data->fan[1] = (i2c_smbus_read_byte_data(client, | |
678 | LM63_REG_TACH_LIMIT_LSB) & 0xFC) | |
679 | | (i2c_smbus_read_byte_data(client, | |
680 | LM63_REG_TACH_LIMIT_MSB) << 8); | |
1da177e4 LT |
681 | } |
682 | ||
683 | data->pwm1_freq = i2c_smbus_read_byte_data(client, | |
684 | LM63_REG_PWM_FREQ); | |
685 | if (data->pwm1_freq == 0) | |
686 | data->pwm1_freq = 1; | |
687 | data->pwm1_value = i2c_smbus_read_byte_data(client, | |
688 | LM63_REG_PWM_VALUE); | |
689 | ||
bc51ae11 JD |
690 | data->temp8[0] = i2c_smbus_read_byte_data(client, |
691 | LM63_REG_LOCAL_TEMP); | |
692 | data->temp8[1] = i2c_smbus_read_byte_data(client, | |
693 | LM63_REG_LOCAL_HIGH); | |
1da177e4 LT |
694 | |
695 | /* order matters for temp2_input */ | |
bc51ae11 JD |
696 | data->temp11[0] = i2c_smbus_read_byte_data(client, |
697 | LM63_REG_REMOTE_TEMP_MSB) << 8; | |
698 | data->temp11[0] |= i2c_smbus_read_byte_data(client, | |
699 | LM63_REG_REMOTE_TEMP_LSB); | |
700 | data->temp11[1] = (i2c_smbus_read_byte_data(client, | |
1da177e4 LT |
701 | LM63_REG_REMOTE_LOW_MSB) << 8) |
702 | | i2c_smbus_read_byte_data(client, | |
703 | LM63_REG_REMOTE_LOW_LSB); | |
bc51ae11 JD |
704 | data->temp11[2] = (i2c_smbus_read_byte_data(client, |
705 | LM63_REG_REMOTE_HIGH_MSB) << 8) | |
706 | | i2c_smbus_read_byte_data(client, | |
707 | LM63_REG_REMOTE_HIGH_LSB); | |
786375f7 GR |
708 | data->temp11[3] = (i2c_smbus_read_byte_data(client, |
709 | LM63_REG_REMOTE_OFFSET_MSB) << 8) | |
710 | | i2c_smbus_read_byte_data(client, | |
711 | LM63_REG_REMOTE_OFFSET_LSB); | |
bc51ae11 JD |
712 | data->temp8[2] = i2c_smbus_read_byte_data(client, |
713 | LM63_REG_REMOTE_TCRIT); | |
1da177e4 LT |
714 | data->temp2_crit_hyst = i2c_smbus_read_byte_data(client, |
715 | LM63_REG_REMOTE_TCRIT_HYST); | |
716 | ||
717 | data->alarms = i2c_smbus_read_byte_data(client, | |
718 | LM63_REG_ALERT_STATUS) & 0x7F; | |
719 | ||
720 | data->last_updated = jiffies; | |
721 | data->valid = 1; | |
722 | } | |
723 | ||
9a61bf63 | 724 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
725 | |
726 | return data; | |
727 | } | |
728 | ||
729 | static int __init sensors_lm63_init(void) | |
730 | { | |
731 | return i2c_add_driver(&lm63_driver); | |
732 | } | |
733 | ||
734 | static void __exit sensors_lm63_exit(void) | |
735 | { | |
736 | i2c_del_driver(&lm63_driver); | |
737 | } | |
738 | ||
739 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); | |
740 | MODULE_DESCRIPTION("LM63 driver"); | |
741 | MODULE_LICENSE("GPL"); | |
742 | ||
743 | module_init(sensors_lm63_init); | |
744 | module_exit(sensors_lm63_exit); |