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 | ||
e872c91e GR |
95 | #define LM96163_REG_REMOTE_TEMP_U_MSB 0x31 |
96 | #define LM96163_REG_REMOTE_TEMP_U_LSB 0x32 | |
210961c4 GR |
97 | #define LM96163_REG_CONFIG_ENHANCED 0x45 |
98 | ||
1da177e4 LT |
99 | /* |
100 | * Conversions and various macros | |
101 | * For tachometer counts, the LM63 uses 16-bit values. | |
102 | * For local temperature and high limit, remote critical limit and hysteresis | |
44bbe87e | 103 | * value, it uses signed 8-bit values with LSB = 1 degree Celsius. |
1da177e4 | 104 | * For remote temperature, low and high limits, it uses signed 11-bit values |
44bbe87e | 105 | * with LSB = 0.125 degree Celsius, left-justified in 16-bit registers. |
2778fb13 DE |
106 | * For LM64 the actual remote diode temperature is 16 degree Celsius higher |
107 | * than the register reading. Remote temperature setpoints have to be | |
108 | * adapted accordingly. | |
1da177e4 LT |
109 | */ |
110 | ||
111 | #define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \ | |
112 | 5400000 / (reg)) | |
113 | #define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \ | |
114 | (5400000 / (val)) & 0xFFFC) | |
115 | #define TEMP8_FROM_REG(reg) ((reg) * 1000) | |
116 | #define TEMP8_TO_REG(val) ((val) <= -128000 ? -128 : \ | |
117 | (val) >= 127000 ? 127 : \ | |
118 | (val) < 0 ? ((val) - 500) / 1000 : \ | |
119 | ((val) + 500) / 1000) | |
94e55df4 GR |
120 | #define TEMP8U_TO_REG(val) ((val) <= 0 ? 0 : \ |
121 | (val) >= 255000 ? 255 : \ | |
122 | ((val) + 500) / 1000) | |
1da177e4 LT |
123 | #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) |
124 | #define TEMP11_TO_REG(val) ((val) <= -128000 ? 0x8000 : \ | |
125 | (val) >= 127875 ? 0x7FE0 : \ | |
126 | (val) < 0 ? ((val) - 62) / 125 * 32 : \ | |
127 | ((val) + 62) / 125 * 32) | |
e872c91e GR |
128 | #define TEMP11U_TO_REG(val) ((val) <= 0 ? 0 : \ |
129 | (val) >= 255875 ? 0xFFE0 : \ | |
130 | ((val) + 62) / 125 * 32) | |
1da177e4 LT |
131 | #define HYST_TO_REG(val) ((val) <= 0 ? 0 : \ |
132 | (val) >= 127000 ? 127 : \ | |
133 | ((val) + 500) / 1000) | |
134 | ||
135 | /* | |
136 | * Functions declaration | |
137 | */ | |
138 | ||
d5957be2 JD |
139 | static int lm63_probe(struct i2c_client *client, |
140 | const struct i2c_device_id *id); | |
141 | static int lm63_remove(struct i2c_client *client); | |
1da177e4 LT |
142 | |
143 | static struct lm63_data *lm63_update_device(struct device *dev); | |
144 | ||
310ec792 | 145 | static int lm63_detect(struct i2c_client *client, struct i2c_board_info *info); |
1da177e4 LT |
146 | static void lm63_init_client(struct i2c_client *client); |
147 | ||
210961c4 | 148 | enum chips { lm63, lm64, lm96163 }; |
10f2ed31 | 149 | |
1da177e4 LT |
150 | /* |
151 | * Driver data (common to all clients) | |
152 | */ | |
153 | ||
d5957be2 | 154 | static const struct i2c_device_id lm63_id[] = { |
10f2ed31 MG |
155 | { "lm63", lm63 }, |
156 | { "lm64", lm64 }, | |
210961c4 | 157 | { "lm96163", lm96163 }, |
d5957be2 JD |
158 | { } |
159 | }; | |
160 | MODULE_DEVICE_TABLE(i2c, lm63_id); | |
161 | ||
1da177e4 | 162 | static struct i2c_driver lm63_driver = { |
d5957be2 | 163 | .class = I2C_CLASS_HWMON, |
cdaf7934 | 164 | .driver = { |
cdaf7934 LR |
165 | .name = "lm63", |
166 | }, | |
d5957be2 JD |
167 | .probe = lm63_probe, |
168 | .remove = lm63_remove, | |
169 | .id_table = lm63_id, | |
170 | .detect = lm63_detect, | |
c3813d6a | 171 | .address_list = normal_i2c, |
1da177e4 LT |
172 | }; |
173 | ||
174 | /* | |
175 | * Client data (each client gets its own) | |
176 | */ | |
177 | ||
178 | struct lm63_data { | |
1beeffe4 | 179 | struct device *hwmon_dev; |
9a61bf63 | 180 | struct mutex update_lock; |
1da177e4 LT |
181 | char valid; /* zero until following fields are valid */ |
182 | unsigned long last_updated; /* in jiffies */ | |
2778fb13 DE |
183 | int kind; |
184 | int temp2_offset; | |
1da177e4 LT |
185 | |
186 | /* registers values */ | |
187 | u8 config, config_fan; | |
bc51ae11 JD |
188 | u16 fan[2]; /* 0: input |
189 | 1: low limit */ | |
1da177e4 LT |
190 | u8 pwm1_freq; |
191 | u8 pwm1_value; | |
bc51ae11 JD |
192 | s8 temp8[3]; /* 0: local input |
193 | 1: local high limit | |
194 | 2: remote critical limit */ | |
786375f7 | 195 | s16 temp11[4]; /* 0: remote input |
bc51ae11 | 196 | 1: remote low limit |
786375f7 GR |
197 | 2: remote high limit |
198 | 3: remote offset */ | |
e872c91e | 199 | u16 temp11u; /* remote input (unsigned) */ |
1da177e4 LT |
200 | u8 temp2_crit_hyst; |
201 | u8 alarms; | |
210961c4 | 202 | bool pwm_highres; |
e872c91e | 203 | bool remote_unsigned; /* true if unsigned remote upper limits */ |
1da177e4 LT |
204 | }; |
205 | ||
e872c91e GR |
206 | static inline int temp8_from_reg(struct lm63_data *data, int nr) |
207 | { | |
208 | if (data->remote_unsigned) | |
209 | return TEMP8_FROM_REG((u8)data->temp8[nr]); | |
210 | return TEMP8_FROM_REG(data->temp8[nr]); | |
211 | } | |
212 | ||
1da177e4 LT |
213 | /* |
214 | * Sysfs callback functions and files | |
215 | */ | |
216 | ||
bc51ae11 JD |
217 | static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, |
218 | char *buf) | |
219 | { | |
220 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
221 | struct lm63_data *data = lm63_update_device(dev); | |
222 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index])); | |
1da177e4 | 223 | } |
1da177e4 | 224 | |
bc51ae11 JD |
225 | static ssize_t set_fan(struct device *dev, struct device_attribute *dummy, |
226 | const char *buf, size_t count) | |
1da177e4 LT |
227 | { |
228 | struct i2c_client *client = to_i2c_client(dev); | |
229 | struct lm63_data *data = i2c_get_clientdata(client); | |
662bda28 GR |
230 | unsigned long val; |
231 | int err; | |
232 | ||
233 | err = kstrtoul(buf, 10, &val); | |
234 | if (err) | |
235 | return err; | |
1da177e4 | 236 | |
9a61bf63 | 237 | mutex_lock(&data->update_lock); |
bc51ae11 | 238 | data->fan[1] = FAN_TO_REG(val); |
1da177e4 | 239 | i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB, |
bc51ae11 | 240 | data->fan[1] & 0xFF); |
1da177e4 | 241 | i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB, |
bc51ae11 | 242 | data->fan[1] >> 8); |
9a61bf63 | 243 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
244 | return count; |
245 | } | |
246 | ||
bc51ae11 JD |
247 | static ssize_t show_pwm1(struct device *dev, struct device_attribute *dummy, |
248 | char *buf) | |
1da177e4 LT |
249 | { |
250 | struct lm63_data *data = lm63_update_device(dev); | |
210961c4 GR |
251 | int pwm; |
252 | ||
253 | if (data->pwm_highres) | |
254 | pwm = data->pwm1_value; | |
255 | else | |
256 | pwm = data->pwm1_value >= 2 * data->pwm1_freq ? | |
1da177e4 | 257 | 255 : (data->pwm1_value * 255 + data->pwm1_freq) / |
210961c4 GR |
258 | (2 * data->pwm1_freq); |
259 | ||
260 | return sprintf(buf, "%d\n", pwm); | |
1da177e4 LT |
261 | } |
262 | ||
bc51ae11 JD |
263 | static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy, |
264 | const char *buf, size_t count) | |
1da177e4 LT |
265 | { |
266 | struct i2c_client *client = to_i2c_client(dev); | |
267 | struct lm63_data *data = i2c_get_clientdata(client); | |
268 | unsigned long val; | |
662bda28 GR |
269 | int err; |
270 | ||
1da177e4 LT |
271 | if (!(data->config_fan & 0x20)) /* register is read-only */ |
272 | return -EPERM; | |
273 | ||
662bda28 GR |
274 | err = kstrtoul(buf, 10, &val); |
275 | if (err) | |
276 | return err; | |
277 | ||
210961c4 | 278 | val = SENSORS_LIMIT(val, 0, 255); |
9a61bf63 | 279 | mutex_lock(&data->update_lock); |
210961c4 | 280 | data->pwm1_value = data->pwm_highres ? val : |
1da177e4 LT |
281 | (val * data->pwm1_freq * 2 + 127) / 255; |
282 | i2c_smbus_write_byte_data(client, LM63_REG_PWM_VALUE, data->pwm1_value); | |
9a61bf63 | 283 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
284 | return count; |
285 | } | |
286 | ||
662bda28 GR |
287 | static ssize_t show_pwm1_enable(struct device *dev, |
288 | struct device_attribute *dummy, char *buf) | |
1da177e4 LT |
289 | { |
290 | struct lm63_data *data = lm63_update_device(dev); | |
291 | return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2); | |
292 | } | |
293 | ||
2778fb13 DE |
294 | /* |
295 | * There are 8bit registers for both local(temp1) and remote(temp2) sensor. | |
296 | * For remote sensor registers temp2_offset has to be considered, | |
297 | * for local sensor it must not. | |
298 | * So we need separate 8bit accessors for local and remote sensor. | |
299 | */ | |
300 | static ssize_t show_local_temp8(struct device *dev, | |
301 | struct device_attribute *devattr, | |
302 | char *buf) | |
bc51ae11 JD |
303 | { |
304 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
305 | struct lm63_data *data = lm63_update_device(dev); | |
306 | return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index])); | |
1da177e4 | 307 | } |
bc51ae11 | 308 | |
2778fb13 DE |
309 | static ssize_t show_remote_temp8(struct device *dev, |
310 | struct device_attribute *devattr, | |
311 | char *buf) | |
312 | { | |
313 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
314 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e | 315 | return sprintf(buf, "%d\n", temp8_from_reg(data, attr->index) |
2778fb13 DE |
316 | + data->temp2_offset); |
317 | } | |
318 | ||
94e55df4 GR |
319 | static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr, |
320 | const char *buf, size_t count) | |
bc51ae11 | 321 | { |
94e55df4 | 322 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
bc51ae11 JD |
323 | struct i2c_client *client = to_i2c_client(dev); |
324 | struct lm63_data *data = i2c_get_clientdata(client); | |
94e55df4 GR |
325 | int nr = attr->index; |
326 | int reg = nr == 2 ? LM63_REG_REMOTE_TCRIT : LM63_REG_LOCAL_HIGH; | |
662bda28 GR |
327 | long val; |
328 | int err; | |
94e55df4 | 329 | int temp; |
662bda28 GR |
330 | |
331 | err = kstrtol(buf, 10, &val); | |
332 | if (err) | |
333 | return err; | |
bc51ae11 | 334 | |
9a61bf63 | 335 | mutex_lock(&data->update_lock); |
94e55df4 GR |
336 | if (nr == 2) { |
337 | if (data->remote_unsigned) | |
338 | temp = TEMP8U_TO_REG(val - data->temp2_offset); | |
339 | else | |
340 | temp = TEMP8_TO_REG(val - data->temp2_offset); | |
341 | } else { | |
342 | temp = TEMP8_TO_REG(val); | |
343 | } | |
344 | data->temp8[nr] = temp; | |
345 | i2c_smbus_write_byte_data(client, reg, temp); | |
9a61bf63 | 346 | mutex_unlock(&data->update_lock); |
bc51ae11 | 347 | return count; |
1da177e4 | 348 | } |
bc51ae11 JD |
349 | |
350 | static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, | |
351 | char *buf) | |
352 | { | |
353 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
354 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e GR |
355 | int nr = attr->index; |
356 | int temp; | |
357 | ||
358 | if (!nr) { | |
359 | /* | |
360 | * Use unsigned temperature unless its value is zero. | |
361 | * If it is zero, use signed temperature. | |
362 | */ | |
363 | if (data->temp11u) | |
364 | temp = TEMP11_FROM_REG(data->temp11u); | |
365 | else | |
366 | temp = TEMP11_FROM_REG(data->temp11[nr]); | |
367 | } else { | |
368 | if (data->remote_unsigned && nr == 2) | |
369 | temp = TEMP11_FROM_REG((u16)data->temp11[nr]); | |
370 | else | |
371 | temp = TEMP11_FROM_REG(data->temp11[nr]); | |
372 | } | |
373 | return sprintf(buf, "%d\n", temp + data->temp2_offset); | |
1da177e4 | 374 | } |
bc51ae11 JD |
375 | |
376 | static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, | |
377 | const char *buf, size_t count) | |
378 | { | |
786375f7 | 379 | static const u8 reg[6] = { |
bc51ae11 JD |
380 | LM63_REG_REMOTE_LOW_MSB, |
381 | LM63_REG_REMOTE_LOW_LSB, | |
382 | LM63_REG_REMOTE_HIGH_MSB, | |
383 | LM63_REG_REMOTE_HIGH_LSB, | |
786375f7 GR |
384 | LM63_REG_REMOTE_OFFSET_MSB, |
385 | LM63_REG_REMOTE_OFFSET_LSB, | |
bc51ae11 JD |
386 | }; |
387 | ||
388 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
389 | struct i2c_client *client = to_i2c_client(dev); | |
390 | struct lm63_data *data = i2c_get_clientdata(client); | |
662bda28 GR |
391 | long val; |
392 | int err; | |
bc51ae11 JD |
393 | int nr = attr->index; |
394 | ||
662bda28 GR |
395 | err = kstrtol(buf, 10, &val); |
396 | if (err) | |
397 | return err; | |
398 | ||
9a61bf63 | 399 | mutex_lock(&data->update_lock); |
e872c91e GR |
400 | if (data->remote_unsigned && nr == 2) |
401 | data->temp11[nr] = TEMP11U_TO_REG(val - data->temp2_offset); | |
402 | else | |
403 | data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset); | |
404 | ||
bc51ae11 JD |
405 | i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], |
406 | data->temp11[nr] >> 8); | |
407 | i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], | |
408 | data->temp11[nr] & 0xff); | |
9a61bf63 | 409 | mutex_unlock(&data->update_lock); |
bc51ae11 | 410 | return count; |
1da177e4 | 411 | } |
1da177e4 | 412 | |
662bda28 GR |
413 | /* |
414 | * Hysteresis register holds a relative value, while we want to present | |
415 | * an absolute to user-space | |
416 | */ | |
417 | static ssize_t show_temp2_crit_hyst(struct device *dev, | |
418 | struct device_attribute *dummy, char *buf) | |
1da177e4 LT |
419 | { |
420 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e | 421 | return sprintf(buf, "%d\n", temp8_from_reg(data, 2) |
2778fb13 | 422 | + data->temp2_offset |
1da177e4 LT |
423 | - TEMP8_FROM_REG(data->temp2_crit_hyst)); |
424 | } | |
425 | ||
662bda28 GR |
426 | /* |
427 | * And now the other way around, user-space provides an absolute | |
428 | * hysteresis value and we have to store a relative one | |
429 | */ | |
430 | static ssize_t set_temp2_crit_hyst(struct device *dev, | |
431 | struct device_attribute *dummy, | |
bc51ae11 | 432 | const char *buf, size_t count) |
1da177e4 LT |
433 | { |
434 | struct i2c_client *client = to_i2c_client(dev); | |
435 | struct lm63_data *data = i2c_get_clientdata(client); | |
662bda28 GR |
436 | long val; |
437 | int err; | |
1da177e4 LT |
438 | long hyst; |
439 | ||
662bda28 GR |
440 | err = kstrtol(buf, 10, &val); |
441 | if (err) | |
442 | return err; | |
443 | ||
9a61bf63 | 444 | mutex_lock(&data->update_lock); |
e872c91e | 445 | hyst = temp8_from_reg(data, 2) + data->temp2_offset - val; |
1da177e4 LT |
446 | i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST, |
447 | HYST_TO_REG(hyst)); | |
9a61bf63 | 448 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
449 | return count; |
450 | } | |
451 | ||
bc51ae11 JD |
452 | static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy, |
453 | char *buf) | |
1da177e4 LT |
454 | { |
455 | struct lm63_data *data = lm63_update_device(dev); | |
456 | return sprintf(buf, "%u\n", data->alarms); | |
457 | } | |
458 | ||
2d45771e JD |
459 | static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr, |
460 | char *buf) | |
461 | { | |
462 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
463 | struct lm63_data *data = lm63_update_device(dev); | |
464 | int bitnr = attr->index; | |
465 | ||
466 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
467 | } | |
468 | ||
bc51ae11 JD |
469 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); |
470 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan, | |
471 | set_fan, 1); | |
1da177e4 LT |
472 | |
473 | static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1); | |
474 | static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL); | |
475 | ||
2778fb13 DE |
476 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0); |
477 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8, | |
94e55df4 | 478 | set_temp8, 1); |
1da177e4 | 479 | |
bc51ae11 JD |
480 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0); |
481 | static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, | |
482 | set_temp11, 1); | |
483 | static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11, | |
484 | set_temp11, 2); | |
786375f7 GR |
485 | static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11, |
486 | set_temp11, 3); | |
2778fb13 | 487 | static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8, |
94e55df4 | 488 | set_temp8, 2); |
1da177e4 LT |
489 | static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst, |
490 | set_temp2_crit_hyst); | |
491 | ||
2d45771e JD |
492 | /* Individual alarm files */ |
493 | static SENSOR_DEVICE_ATTR(fan1_min_alarm, S_IRUGO, show_alarm, NULL, 0); | |
494 | static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1); | |
7817a39e | 495 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2); |
2d45771e JD |
496 | static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3); |
497 | static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4); | |
498 | static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6); | |
499 | /* Raw alarm file for compatibility */ | |
1da177e4 LT |
500 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
501 | ||
0e39e01c JD |
502 | static struct attribute *lm63_attributes[] = { |
503 | &dev_attr_pwm1.attr, | |
504 | &dev_attr_pwm1_enable.attr, | |
505 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
506 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
507 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
508 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
509 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
786375f7 | 510 | &sensor_dev_attr_temp2_offset.dev_attr.attr, |
0e39e01c JD |
511 | &sensor_dev_attr_temp2_crit.dev_attr.attr, |
512 | &dev_attr_temp2_crit_hyst.attr, | |
513 | ||
514 | &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, | |
7817a39e | 515 | &sensor_dev_attr_temp2_fault.dev_attr.attr, |
0e39e01c JD |
516 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, |
517 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, | |
518 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, | |
519 | &dev_attr_alarms.attr, | |
520 | NULL | |
521 | }; | |
522 | ||
94e55df4 GR |
523 | /* |
524 | * On LM63, temp2_crit can be set only once, which should be job | |
525 | * of the bootloader. | |
526 | * On LM64, temp2_crit can always be set. | |
527 | * On LM96163, temp2_crit can be set if bit 1 of the configuration | |
528 | * register is true. | |
529 | */ | |
530 | static umode_t lm63_attribute_mode(struct kobject *kobj, | |
531 | struct attribute *attr, int index) | |
532 | { | |
533 | struct device *dev = container_of(kobj, struct device, kobj); | |
534 | struct i2c_client *client = to_i2c_client(dev); | |
535 | struct lm63_data *data = i2c_get_clientdata(client); | |
536 | ||
537 | if (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr | |
538 | && (data->kind == lm64 || | |
539 | (data->kind == lm96163 && (data->config & 0x02)))) | |
540 | return attr->mode | S_IWUSR; | |
541 | ||
542 | return attr->mode; | |
543 | } | |
544 | ||
0e39e01c | 545 | static const struct attribute_group lm63_group = { |
94e55df4 | 546 | .is_visible = lm63_attribute_mode, |
0e39e01c JD |
547 | .attrs = lm63_attributes, |
548 | }; | |
549 | ||
550 | static struct attribute *lm63_attributes_fan1[] = { | |
551 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
552 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
553 | ||
554 | &sensor_dev_attr_fan1_min_alarm.dev_attr.attr, | |
555 | NULL | |
556 | }; | |
557 | ||
558 | static const struct attribute_group lm63_group_fan1 = { | |
559 | .attrs = lm63_attributes_fan1, | |
560 | }; | |
561 | ||
1da177e4 LT |
562 | /* |
563 | * Real code | |
564 | */ | |
565 | ||
d5957be2 | 566 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 567 | static int lm63_detect(struct i2c_client *new_client, |
d5957be2 | 568 | struct i2c_board_info *info) |
1da177e4 | 569 | { |
d5957be2 | 570 | struct i2c_adapter *adapter = new_client->adapter; |
52df6440 JD |
571 | u8 man_id, chip_id, reg_config1, reg_config2; |
572 | u8 reg_alert_status, reg_alert_mask; | |
10f2ed31 | 573 | int address = new_client->addr; |
1da177e4 LT |
574 | |
575 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
d5957be2 | 576 | return -ENODEV; |
1da177e4 | 577 | |
52df6440 JD |
578 | man_id = i2c_smbus_read_byte_data(new_client, LM63_REG_MAN_ID); |
579 | chip_id = i2c_smbus_read_byte_data(new_client, LM63_REG_CHIP_ID); | |
580 | ||
581 | reg_config1 = i2c_smbus_read_byte_data(new_client, | |
582 | LM63_REG_CONFIG1); | |
583 | reg_config2 = i2c_smbus_read_byte_data(new_client, | |
584 | LM63_REG_CONFIG2); | |
585 | reg_alert_status = i2c_smbus_read_byte_data(new_client, | |
586 | LM63_REG_ALERT_STATUS); | |
587 | reg_alert_mask = i2c_smbus_read_byte_data(new_client, | |
588 | LM63_REG_ALERT_MASK); | |
589 | ||
590 | if (man_id != 0x01 /* National Semiconductor */ | |
52df6440 JD |
591 | || (reg_config1 & 0x18) != 0x00 |
592 | || (reg_config2 & 0xF8) != 0x00 | |
593 | || (reg_alert_status & 0x20) != 0x00 | |
594 | || (reg_alert_mask & 0xA4) != 0xA4) { | |
595 | dev_dbg(&adapter->dev, | |
596 | "Unsupported chip (man_id=0x%02X, chip_id=0x%02X)\n", | |
597 | man_id, chip_id); | |
598 | return -ENODEV; | |
1da177e4 LT |
599 | } |
600 | ||
10f2ed31 MG |
601 | if (chip_id == 0x41 && address == 0x4c) |
602 | strlcpy(info->type, "lm63", I2C_NAME_SIZE); | |
603 | else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e)) | |
604 | strlcpy(info->type, "lm64", I2C_NAME_SIZE); | |
210961c4 GR |
605 | else if (chip_id == 0x49 && address == 0x4c) |
606 | strlcpy(info->type, "lm96163", I2C_NAME_SIZE); | |
10f2ed31 MG |
607 | else |
608 | return -ENODEV; | |
d5957be2 JD |
609 | |
610 | return 0; | |
611 | } | |
612 | ||
613 | static int lm63_probe(struct i2c_client *new_client, | |
614 | const struct i2c_device_id *id) | |
615 | { | |
616 | struct lm63_data *data; | |
617 | int err; | |
618 | ||
619 | data = kzalloc(sizeof(struct lm63_data), GFP_KERNEL); | |
620 | if (!data) { | |
621 | err = -ENOMEM; | |
622 | goto exit; | |
623 | } | |
624 | ||
625 | i2c_set_clientdata(new_client, data); | |
1da177e4 | 626 | data->valid = 0; |
9a61bf63 | 627 | mutex_init(&data->update_lock); |
1da177e4 | 628 | |
2778fb13 DE |
629 | /* Set the device type */ |
630 | data->kind = id->driver_data; | |
631 | if (data->kind == lm64) | |
632 | data->temp2_offset = 16000; | |
633 | ||
634 | /* Initialize chip */ | |
1da177e4 LT |
635 | lm63_init_client(new_client); |
636 | ||
637 | /* Register sysfs hooks */ | |
662bda28 GR |
638 | err = sysfs_create_group(&new_client->dev.kobj, &lm63_group); |
639 | if (err) | |
d5957be2 | 640 | goto exit_free; |
0e39e01c | 641 | if (data->config & 0x04) { /* tachometer enabled */ |
662bda28 GR |
642 | err = sysfs_create_group(&new_client->dev.kobj, |
643 | &lm63_group_fan1); | |
644 | if (err) | |
0e39e01c | 645 | goto exit_remove_files; |
943b0830 MH |
646 | } |
647 | ||
1beeffe4 TJ |
648 | data->hwmon_dev = hwmon_device_register(&new_client->dev); |
649 | if (IS_ERR(data->hwmon_dev)) { | |
650 | err = PTR_ERR(data->hwmon_dev); | |
0e39e01c | 651 | goto exit_remove_files; |
1da177e4 | 652 | } |
1da177e4 LT |
653 | |
654 | return 0; | |
655 | ||
0e39e01c JD |
656 | exit_remove_files: |
657 | sysfs_remove_group(&new_client->dev.kobj, &lm63_group); | |
658 | sysfs_remove_group(&new_client->dev.kobj, &lm63_group_fan1); | |
1da177e4 LT |
659 | exit_free: |
660 | kfree(data); | |
661 | exit: | |
662 | return err; | |
663 | } | |
664 | ||
662bda28 GR |
665 | /* |
666 | * Ideally we shouldn't have to initialize anything, since the BIOS | |
667 | * should have taken care of everything | |
668 | */ | |
1da177e4 LT |
669 | static void lm63_init_client(struct i2c_client *client) |
670 | { | |
671 | struct lm63_data *data = i2c_get_clientdata(client); | |
672 | ||
673 | data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); | |
674 | data->config_fan = i2c_smbus_read_byte_data(client, | |
675 | LM63_REG_CONFIG_FAN); | |
676 | ||
677 | /* Start converting if needed */ | |
678 | if (data->config & 0x40) { /* standby */ | |
898eb71c | 679 | dev_dbg(&client->dev, "Switching to operational mode\n"); |
1da177e4 LT |
680 | data->config &= 0xA7; |
681 | i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1, | |
682 | data->config); | |
683 | } | |
684 | ||
685 | /* We may need pwm1_freq before ever updating the client data */ | |
686 | data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ); | |
687 | if (data->pwm1_freq == 0) | |
688 | data->pwm1_freq = 1; | |
689 | ||
210961c4 | 690 | /* |
e872c91e GR |
691 | * For LM96163, check if high resolution PWM |
692 | * and unsigned temperature format is enabled. | |
210961c4 GR |
693 | */ |
694 | if (data->kind == lm96163) { | |
695 | u8 config_enhanced | |
696 | = i2c_smbus_read_byte_data(client, | |
697 | LM96163_REG_CONFIG_ENHANCED); | |
698 | if ((config_enhanced & 0x10) | |
699 | && !(data->config_fan & 0x08) && data->pwm1_freq == 8) | |
700 | data->pwm_highres = true; | |
701 | if (config_enhanced & 0x08) | |
e872c91e | 702 | data->remote_unsigned = true; |
210961c4 GR |
703 | } |
704 | ||
1da177e4 LT |
705 | /* Show some debug info about the LM63 configuration */ |
706 | dev_dbg(&client->dev, "Alert/tach pin configured for %s\n", | |
707 | (data->config & 0x04) ? "tachometer input" : | |
708 | "alert output"); | |
709 | dev_dbg(&client->dev, "PWM clock %s kHz, output frequency %u Hz\n", | |
710 | (data->config_fan & 0x08) ? "1.4" : "360", | |
711 | ((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq); | |
712 | dev_dbg(&client->dev, "PWM output active %s, %s mode\n", | |
713 | (data->config_fan & 0x10) ? "low" : "high", | |
714 | (data->config_fan & 0x20) ? "manual" : "auto"); | |
715 | } | |
716 | ||
d5957be2 | 717 | static int lm63_remove(struct i2c_client *client) |
1da177e4 | 718 | { |
943b0830 | 719 | struct lm63_data *data = i2c_get_clientdata(client); |
1da177e4 | 720 | |
1beeffe4 | 721 | hwmon_device_unregister(data->hwmon_dev); |
0e39e01c JD |
722 | sysfs_remove_group(&client->dev.kobj, &lm63_group); |
723 | sysfs_remove_group(&client->dev.kobj, &lm63_group_fan1); | |
943b0830 | 724 | |
943b0830 | 725 | kfree(data); |
1da177e4 LT |
726 | return 0; |
727 | } | |
728 | ||
729 | static struct lm63_data *lm63_update_device(struct device *dev) | |
730 | { | |
731 | struct i2c_client *client = to_i2c_client(dev); | |
732 | struct lm63_data *data = i2c_get_clientdata(client); | |
733 | ||
9a61bf63 | 734 | mutex_lock(&data->update_lock); |
1da177e4 LT |
735 | |
736 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { | |
737 | if (data->config & 0x04) { /* tachometer enabled */ | |
738 | /* order matters for fan1_input */ | |
bc51ae11 JD |
739 | data->fan[0] = i2c_smbus_read_byte_data(client, |
740 | LM63_REG_TACH_COUNT_LSB) & 0xFC; | |
741 | data->fan[0] |= i2c_smbus_read_byte_data(client, | |
742 | LM63_REG_TACH_COUNT_MSB) << 8; | |
743 | data->fan[1] = (i2c_smbus_read_byte_data(client, | |
744 | LM63_REG_TACH_LIMIT_LSB) & 0xFC) | |
745 | | (i2c_smbus_read_byte_data(client, | |
746 | LM63_REG_TACH_LIMIT_MSB) << 8); | |
1da177e4 LT |
747 | } |
748 | ||
749 | data->pwm1_freq = i2c_smbus_read_byte_data(client, | |
750 | LM63_REG_PWM_FREQ); | |
751 | if (data->pwm1_freq == 0) | |
752 | data->pwm1_freq = 1; | |
753 | data->pwm1_value = i2c_smbus_read_byte_data(client, | |
754 | LM63_REG_PWM_VALUE); | |
755 | ||
bc51ae11 JD |
756 | data->temp8[0] = i2c_smbus_read_byte_data(client, |
757 | LM63_REG_LOCAL_TEMP); | |
758 | data->temp8[1] = i2c_smbus_read_byte_data(client, | |
759 | LM63_REG_LOCAL_HIGH); | |
1da177e4 LT |
760 | |
761 | /* order matters for temp2_input */ | |
bc51ae11 JD |
762 | data->temp11[0] = i2c_smbus_read_byte_data(client, |
763 | LM63_REG_REMOTE_TEMP_MSB) << 8; | |
764 | data->temp11[0] |= i2c_smbus_read_byte_data(client, | |
765 | LM63_REG_REMOTE_TEMP_LSB); | |
766 | data->temp11[1] = (i2c_smbus_read_byte_data(client, | |
1da177e4 LT |
767 | LM63_REG_REMOTE_LOW_MSB) << 8) |
768 | | i2c_smbus_read_byte_data(client, | |
769 | LM63_REG_REMOTE_LOW_LSB); | |
bc51ae11 JD |
770 | data->temp11[2] = (i2c_smbus_read_byte_data(client, |
771 | LM63_REG_REMOTE_HIGH_MSB) << 8) | |
772 | | i2c_smbus_read_byte_data(client, | |
773 | LM63_REG_REMOTE_HIGH_LSB); | |
786375f7 GR |
774 | data->temp11[3] = (i2c_smbus_read_byte_data(client, |
775 | LM63_REG_REMOTE_OFFSET_MSB) << 8) | |
776 | | i2c_smbus_read_byte_data(client, | |
777 | LM63_REG_REMOTE_OFFSET_LSB); | |
e872c91e GR |
778 | |
779 | if (data->kind == lm96163) | |
780 | data->temp11u = (i2c_smbus_read_byte_data(client, | |
781 | LM96163_REG_REMOTE_TEMP_U_MSB) << 8) | |
782 | | i2c_smbus_read_byte_data(client, | |
783 | LM96163_REG_REMOTE_TEMP_U_LSB); | |
784 | ||
bc51ae11 JD |
785 | data->temp8[2] = i2c_smbus_read_byte_data(client, |
786 | LM63_REG_REMOTE_TCRIT); | |
1da177e4 LT |
787 | data->temp2_crit_hyst = i2c_smbus_read_byte_data(client, |
788 | LM63_REG_REMOTE_TCRIT_HYST); | |
789 | ||
790 | data->alarms = i2c_smbus_read_byte_data(client, | |
791 | LM63_REG_ALERT_STATUS) & 0x7F; | |
792 | ||
793 | data->last_updated = jiffies; | |
794 | data->valid = 1; | |
795 | } | |
796 | ||
9a61bf63 | 797 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
798 | |
799 | return data; | |
800 | } | |
801 | ||
802 | static int __init sensors_lm63_init(void) | |
803 | { | |
804 | return i2c_add_driver(&lm63_driver); | |
805 | } | |
806 | ||
807 | static void __exit sensors_lm63_exit(void) | |
808 | { | |
809 | i2c_del_driver(&lm63_driver); | |
810 | } | |
811 | ||
812 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); | |
813 | MODULE_DESCRIPTION("LM63 driver"); | |
814 | MODULE_LICENSE("GPL"); | |
815 | ||
816 | module_init(sensors_lm63_init); | |
817 | module_exit(sensors_lm63_exit); |