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 | |
d93ab780 JD |
54 | * Address is fully defined internally and cannot be changed except for |
55 | * LM64 which has one pin dedicated to address selection. | |
56 | * LM63 and LM96163 have address 0x4c. | |
57 | * LM64 can have address 0x18 or 0x4e. | |
1da177e4 LT |
58 | */ |
59 | ||
10f2ed31 | 60 | static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END }; |
1da177e4 | 61 | |
1da177e4 LT |
62 | /* |
63 | * The LM63 registers | |
64 | */ | |
65 | ||
66 | #define LM63_REG_CONFIG1 0x03 | |
04738b2b | 67 | #define LM63_REG_CONVRATE 0x04 |
1da177e4 LT |
68 | #define LM63_REG_CONFIG2 0xBF |
69 | #define LM63_REG_CONFIG_FAN 0x4A | |
70 | ||
71 | #define LM63_REG_TACH_COUNT_MSB 0x47 | |
72 | #define LM63_REG_TACH_COUNT_LSB 0x46 | |
73 | #define LM63_REG_TACH_LIMIT_MSB 0x49 | |
74 | #define LM63_REG_TACH_LIMIT_LSB 0x48 | |
75 | ||
76 | #define LM63_REG_PWM_VALUE 0x4C | |
77 | #define LM63_REG_PWM_FREQ 0x4D | |
d216f680 JD |
78 | #define LM63_REG_LUT_TEMP_HYST 0x4F |
79 | #define LM63_REG_LUT_TEMP(nr) (0x50 + 2 * (nr)) | |
80 | #define LM63_REG_LUT_PWM(nr) (0x51 + 2 * (nr)) | |
1da177e4 LT |
81 | |
82 | #define LM63_REG_LOCAL_TEMP 0x00 | |
83 | #define LM63_REG_LOCAL_HIGH 0x05 | |
84 | ||
85 | #define LM63_REG_REMOTE_TEMP_MSB 0x01 | |
86 | #define LM63_REG_REMOTE_TEMP_LSB 0x10 | |
87 | #define LM63_REG_REMOTE_OFFSET_MSB 0x11 | |
88 | #define LM63_REG_REMOTE_OFFSET_LSB 0x12 | |
89 | #define LM63_REG_REMOTE_HIGH_MSB 0x07 | |
90 | #define LM63_REG_REMOTE_HIGH_LSB 0x13 | |
91 | #define LM63_REG_REMOTE_LOW_MSB 0x08 | |
92 | #define LM63_REG_REMOTE_LOW_LSB 0x14 | |
93 | #define LM63_REG_REMOTE_TCRIT 0x19 | |
94 | #define LM63_REG_REMOTE_TCRIT_HYST 0x21 | |
95 | ||
96 | #define LM63_REG_ALERT_STATUS 0x02 | |
97 | #define LM63_REG_ALERT_MASK 0x16 | |
98 | ||
99 | #define LM63_REG_MAN_ID 0xFE | |
100 | #define LM63_REG_CHIP_ID 0xFF | |
101 | ||
f496b2d4 | 102 | #define LM96163_REG_TRUTHERM 0x30 |
e872c91e GR |
103 | #define LM96163_REG_REMOTE_TEMP_U_MSB 0x31 |
104 | #define LM96163_REG_REMOTE_TEMP_U_LSB 0x32 | |
210961c4 GR |
105 | #define LM96163_REG_CONFIG_ENHANCED 0x45 |
106 | ||
04738b2b GR |
107 | #define LM63_MAX_CONVRATE 9 |
108 | ||
109 | #define LM63_MAX_CONVRATE_HZ 32 | |
110 | #define LM96163_MAX_CONVRATE_HZ 26 | |
111 | ||
1da177e4 LT |
112 | /* |
113 | * Conversions and various macros | |
114 | * For tachometer counts, the LM63 uses 16-bit values. | |
115 | * For local temperature and high limit, remote critical limit and hysteresis | |
44bbe87e | 116 | * value, it uses signed 8-bit values with LSB = 1 degree Celsius. |
1da177e4 | 117 | * For remote temperature, low and high limits, it uses signed 11-bit values |
44bbe87e | 118 | * with LSB = 0.125 degree Celsius, left-justified in 16-bit registers. |
2778fb13 DE |
119 | * For LM64 the actual remote diode temperature is 16 degree Celsius higher |
120 | * than the register reading. Remote temperature setpoints have to be | |
121 | * adapted accordingly. | |
1da177e4 LT |
122 | */ |
123 | ||
124 | #define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \ | |
125 | 5400000 / (reg)) | |
126 | #define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \ | |
127 | (5400000 / (val)) & 0xFFFC) | |
128 | #define TEMP8_FROM_REG(reg) ((reg) * 1000) | |
129 | #define TEMP8_TO_REG(val) ((val) <= -128000 ? -128 : \ | |
130 | (val) >= 127000 ? 127 : \ | |
131 | (val) < 0 ? ((val) - 500) / 1000 : \ | |
132 | ((val) + 500) / 1000) | |
94e55df4 GR |
133 | #define TEMP8U_TO_REG(val) ((val) <= 0 ? 0 : \ |
134 | (val) >= 255000 ? 255 : \ | |
135 | ((val) + 500) / 1000) | |
1da177e4 LT |
136 | #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) |
137 | #define TEMP11_TO_REG(val) ((val) <= -128000 ? 0x8000 : \ | |
138 | (val) >= 127875 ? 0x7FE0 : \ | |
139 | (val) < 0 ? ((val) - 62) / 125 * 32 : \ | |
140 | ((val) + 62) / 125 * 32) | |
e872c91e GR |
141 | #define TEMP11U_TO_REG(val) ((val) <= 0 ? 0 : \ |
142 | (val) >= 255875 ? 0xFFE0 : \ | |
143 | ((val) + 62) / 125 * 32) | |
1da177e4 LT |
144 | #define HYST_TO_REG(val) ((val) <= 0 ? 0 : \ |
145 | (val) >= 127000 ? 127 : \ | |
146 | ((val) + 500) / 1000) | |
147 | ||
04738b2b GR |
148 | #define UPDATE_INTERVAL(max, rate) \ |
149 | ((1000 << (LM63_MAX_CONVRATE - (rate))) / (max)) | |
150 | ||
210961c4 | 151 | enum chips { lm63, lm64, lm96163 }; |
10f2ed31 | 152 | |
1da177e4 LT |
153 | /* |
154 | * Client data (each client gets its own) | |
155 | */ | |
156 | ||
157 | struct lm63_data { | |
1beeffe4 | 158 | struct device *hwmon_dev; |
9a61bf63 | 159 | struct mutex update_lock; |
1da177e4 | 160 | char valid; /* zero until following fields are valid */ |
d216f680 | 161 | char lut_valid; /* zero until lut fields are valid */ |
1da177e4 | 162 | unsigned long last_updated; /* in jiffies */ |
d216f680 | 163 | unsigned long lut_last_updated; /* in jiffies */ |
04738b2b | 164 | enum chips kind; |
2778fb13 | 165 | int temp2_offset; |
1da177e4 | 166 | |
04738b2b GR |
167 | int update_interval; /* in milliseconds */ |
168 | int max_convrate_hz; | |
2fe28ab5 | 169 | int lut_size; /* 8 or 12 */ |
04738b2b | 170 | |
1da177e4 LT |
171 | /* registers values */ |
172 | u8 config, config_fan; | |
bc51ae11 JD |
173 | u16 fan[2]; /* 0: input |
174 | 1: low limit */ | |
1da177e4 | 175 | u8 pwm1_freq; |
2fe28ab5 JD |
176 | u8 pwm1[13]; /* 0: current output |
177 | 1-12: lookup table */ | |
178 | s8 temp8[15]; /* 0: local input | |
bc51ae11 | 179 | 1: local high limit |
d216f680 | 180 | 2: remote critical limit |
2fe28ab5 | 181 | 3-14: lookup table */ |
786375f7 | 182 | s16 temp11[4]; /* 0: remote input |
bc51ae11 | 183 | 1: remote low limit |
786375f7 GR |
184 | 2: remote high limit |
185 | 3: remote offset */ | |
e872c91e | 186 | u16 temp11u; /* remote input (unsigned) */ |
1da177e4 | 187 | u8 temp2_crit_hyst; |
d216f680 | 188 | u8 lut_temp_hyst; |
1da177e4 | 189 | u8 alarms; |
210961c4 | 190 | bool pwm_highres; |
d216f680 | 191 | bool lut_temp_highres; |
e872c91e | 192 | bool remote_unsigned; /* true if unsigned remote upper limits */ |
f496b2d4 | 193 | bool trutherm; |
1da177e4 LT |
194 | }; |
195 | ||
e872c91e GR |
196 | static inline int temp8_from_reg(struct lm63_data *data, int nr) |
197 | { | |
198 | if (data->remote_unsigned) | |
199 | return TEMP8_FROM_REG((u8)data->temp8[nr]); | |
200 | return TEMP8_FROM_REG(data->temp8[nr]); | |
201 | } | |
202 | ||
d216f680 JD |
203 | static inline int lut_temp_from_reg(struct lm63_data *data, int nr) |
204 | { | |
205 | return data->temp8[nr] * (data->lut_temp_highres ? 500 : 1000); | |
206 | } | |
207 | ||
817c6cc5 JD |
208 | /* |
209 | * Update the lookup table register cache. | |
210 | * client->update_lock must be held when calling this function. | |
211 | */ | |
212 | static void lm63_update_lut(struct i2c_client *client) | |
213 | { | |
214 | struct lm63_data *data = i2c_get_clientdata(client); | |
215 | int i; | |
216 | ||
217 | if (time_after(jiffies, data->lut_last_updated + 5 * HZ) || | |
218 | !data->lut_valid) { | |
219 | for (i = 0; i < data->lut_size; i++) { | |
220 | data->pwm1[1 + i] = i2c_smbus_read_byte_data(client, | |
221 | LM63_REG_LUT_PWM(i)); | |
222 | data->temp8[3 + i] = i2c_smbus_read_byte_data(client, | |
223 | LM63_REG_LUT_TEMP(i)); | |
224 | } | |
225 | data->lut_temp_hyst = i2c_smbus_read_byte_data(client, | |
226 | LM63_REG_LUT_TEMP_HYST); | |
227 | ||
228 | data->lut_last_updated = jiffies; | |
229 | data->lut_valid = 1; | |
230 | } | |
231 | } | |
232 | ||
dac27dce JD |
233 | static struct lm63_data *lm63_update_device(struct device *dev) |
234 | { | |
235 | struct i2c_client *client = to_i2c_client(dev); | |
236 | struct lm63_data *data = i2c_get_clientdata(client); | |
237 | unsigned long next_update; | |
dac27dce JD |
238 | |
239 | mutex_lock(&data->update_lock); | |
240 | ||
241 | next_update = data->last_updated | |
242 | + msecs_to_jiffies(data->update_interval) + 1; | |
243 | ||
244 | if (time_after(jiffies, next_update) || !data->valid) { | |
245 | if (data->config & 0x04) { /* tachometer enabled */ | |
246 | /* order matters for fan1_input */ | |
247 | data->fan[0] = i2c_smbus_read_byte_data(client, | |
248 | LM63_REG_TACH_COUNT_LSB) & 0xFC; | |
249 | data->fan[0] |= i2c_smbus_read_byte_data(client, | |
250 | LM63_REG_TACH_COUNT_MSB) << 8; | |
251 | data->fan[1] = (i2c_smbus_read_byte_data(client, | |
252 | LM63_REG_TACH_LIMIT_LSB) & 0xFC) | |
253 | | (i2c_smbus_read_byte_data(client, | |
254 | LM63_REG_TACH_LIMIT_MSB) << 8); | |
255 | } | |
256 | ||
257 | data->pwm1_freq = i2c_smbus_read_byte_data(client, | |
258 | LM63_REG_PWM_FREQ); | |
259 | if (data->pwm1_freq == 0) | |
260 | data->pwm1_freq = 1; | |
261 | data->pwm1[0] = i2c_smbus_read_byte_data(client, | |
262 | LM63_REG_PWM_VALUE); | |
263 | ||
264 | data->temp8[0] = i2c_smbus_read_byte_data(client, | |
265 | LM63_REG_LOCAL_TEMP); | |
266 | data->temp8[1] = i2c_smbus_read_byte_data(client, | |
267 | LM63_REG_LOCAL_HIGH); | |
268 | ||
269 | /* order matters for temp2_input */ | |
270 | data->temp11[0] = i2c_smbus_read_byte_data(client, | |
271 | LM63_REG_REMOTE_TEMP_MSB) << 8; | |
272 | data->temp11[0] |= i2c_smbus_read_byte_data(client, | |
273 | LM63_REG_REMOTE_TEMP_LSB); | |
274 | data->temp11[1] = (i2c_smbus_read_byte_data(client, | |
275 | LM63_REG_REMOTE_LOW_MSB) << 8) | |
276 | | i2c_smbus_read_byte_data(client, | |
277 | LM63_REG_REMOTE_LOW_LSB); | |
278 | data->temp11[2] = (i2c_smbus_read_byte_data(client, | |
279 | LM63_REG_REMOTE_HIGH_MSB) << 8) | |
280 | | i2c_smbus_read_byte_data(client, | |
281 | LM63_REG_REMOTE_HIGH_LSB); | |
282 | data->temp11[3] = (i2c_smbus_read_byte_data(client, | |
283 | LM63_REG_REMOTE_OFFSET_MSB) << 8) | |
284 | | i2c_smbus_read_byte_data(client, | |
285 | LM63_REG_REMOTE_OFFSET_LSB); | |
286 | ||
287 | if (data->kind == lm96163) | |
288 | data->temp11u = (i2c_smbus_read_byte_data(client, | |
289 | LM96163_REG_REMOTE_TEMP_U_MSB) << 8) | |
290 | | i2c_smbus_read_byte_data(client, | |
291 | LM96163_REG_REMOTE_TEMP_U_LSB); | |
292 | ||
293 | data->temp8[2] = i2c_smbus_read_byte_data(client, | |
294 | LM63_REG_REMOTE_TCRIT); | |
295 | data->temp2_crit_hyst = i2c_smbus_read_byte_data(client, | |
296 | LM63_REG_REMOTE_TCRIT_HYST); | |
297 | ||
298 | data->alarms = i2c_smbus_read_byte_data(client, | |
299 | LM63_REG_ALERT_STATUS) & 0x7F; | |
300 | ||
301 | data->last_updated = jiffies; | |
302 | data->valid = 1; | |
303 | } | |
304 | ||
817c6cc5 | 305 | lm63_update_lut(client); |
dac27dce JD |
306 | |
307 | mutex_unlock(&data->update_lock); | |
308 | ||
309 | return data; | |
310 | } | |
311 | ||
817c6cc5 JD |
312 | /* |
313 | * Trip points in the lookup table should be in ascending order for both | |
314 | * temperatures and PWM output values. | |
315 | */ | |
316 | static int lm63_lut_looks_bad(struct i2c_client *client) | |
317 | { | |
318 | struct lm63_data *data = i2c_get_clientdata(client); | |
319 | int i; | |
320 | ||
321 | mutex_lock(&data->update_lock); | |
322 | lm63_update_lut(client); | |
323 | ||
324 | for (i = 1; i < data->lut_size; i++) { | |
325 | if (data->pwm1[1 + i - 1] > data->pwm1[1 + i] | |
326 | || data->temp8[3 + i - 1] > data->temp8[3 + i]) { | |
327 | dev_warn(&client->dev, | |
328 | "Lookup table doesn't look sane (check entries %d and %d)\n", | |
329 | i, i + 1); | |
330 | break; | |
331 | } | |
332 | } | |
333 | mutex_unlock(&data->update_lock); | |
334 | ||
335 | return i == data->lut_size ? 0 : 1; | |
336 | } | |
337 | ||
1da177e4 LT |
338 | /* |
339 | * Sysfs callback functions and files | |
340 | */ | |
341 | ||
bc51ae11 JD |
342 | static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, |
343 | char *buf) | |
344 | { | |
345 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
346 | struct lm63_data *data = lm63_update_device(dev); | |
347 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index])); | |
1da177e4 | 348 | } |
1da177e4 | 349 | |
bc51ae11 JD |
350 | static ssize_t set_fan(struct device *dev, struct device_attribute *dummy, |
351 | const char *buf, size_t count) | |
1da177e4 LT |
352 | { |
353 | struct i2c_client *client = to_i2c_client(dev); | |
354 | struct lm63_data *data = i2c_get_clientdata(client); | |
662bda28 GR |
355 | unsigned long val; |
356 | int err; | |
357 | ||
358 | err = kstrtoul(buf, 10, &val); | |
359 | if (err) | |
360 | return err; | |
1da177e4 | 361 | |
9a61bf63 | 362 | mutex_lock(&data->update_lock); |
bc51ae11 | 363 | data->fan[1] = FAN_TO_REG(val); |
1da177e4 | 364 | i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB, |
bc51ae11 | 365 | data->fan[1] & 0xFF); |
1da177e4 | 366 | i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB, |
bc51ae11 | 367 | data->fan[1] >> 8); |
9a61bf63 | 368 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
369 | return count; |
370 | } | |
371 | ||
d216f680 | 372 | static ssize_t show_pwm1(struct device *dev, struct device_attribute *devattr, |
bc51ae11 | 373 | char *buf) |
1da177e4 | 374 | { |
d216f680 | 375 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 376 | struct lm63_data *data = lm63_update_device(dev); |
d216f680 | 377 | int nr = attr->index; |
210961c4 GR |
378 | int pwm; |
379 | ||
380 | if (data->pwm_highres) | |
d216f680 | 381 | pwm = data->pwm1[nr]; |
210961c4 | 382 | else |
d216f680 JD |
383 | pwm = data->pwm1[nr] >= 2 * data->pwm1_freq ? |
384 | 255 : (data->pwm1[nr] * 255 + data->pwm1_freq) / | |
210961c4 GR |
385 | (2 * data->pwm1_freq); |
386 | ||
387 | return sprintf(buf, "%d\n", pwm); | |
1da177e4 LT |
388 | } |
389 | ||
bc51ae11 JD |
390 | static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy, |
391 | const char *buf, size_t count) | |
1da177e4 LT |
392 | { |
393 | struct i2c_client *client = to_i2c_client(dev); | |
394 | struct lm63_data *data = i2c_get_clientdata(client); | |
395 | unsigned long val; | |
662bda28 GR |
396 | int err; |
397 | ||
1da177e4 LT |
398 | if (!(data->config_fan & 0x20)) /* register is read-only */ |
399 | return -EPERM; | |
400 | ||
662bda28 GR |
401 | err = kstrtoul(buf, 10, &val); |
402 | if (err) | |
403 | return err; | |
404 | ||
210961c4 | 405 | val = SENSORS_LIMIT(val, 0, 255); |
9a61bf63 | 406 | mutex_lock(&data->update_lock); |
d216f680 JD |
407 | data->pwm1[0] = data->pwm_highres ? val : |
408 | (val * data->pwm1_freq * 2 + 127) / 255; | |
409 | i2c_smbus_write_byte_data(client, LM63_REG_PWM_VALUE, data->pwm1[0]); | |
9a61bf63 | 410 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
411 | return count; |
412 | } | |
413 | ||
662bda28 GR |
414 | static ssize_t show_pwm1_enable(struct device *dev, |
415 | struct device_attribute *dummy, char *buf) | |
1da177e4 LT |
416 | { |
417 | struct lm63_data *data = lm63_update_device(dev); | |
418 | return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2); | |
419 | } | |
420 | ||
817c6cc5 JD |
421 | static ssize_t set_pwm1_enable(struct device *dev, |
422 | struct device_attribute *dummy, | |
423 | const char *buf, size_t count) | |
424 | { | |
425 | struct i2c_client *client = to_i2c_client(dev); | |
426 | struct lm63_data *data = i2c_get_clientdata(client); | |
427 | unsigned long val; | |
428 | int err; | |
429 | ||
430 | err = kstrtoul(buf, 10, &val); | |
431 | if (err) | |
432 | return err; | |
433 | if (val < 1 || val > 2) | |
434 | return -EINVAL; | |
435 | ||
436 | /* | |
437 | * Only let the user switch to automatic mode if the lookup table | |
438 | * looks sane. | |
439 | */ | |
440 | if (val == 2 && lm63_lut_looks_bad(client)) | |
441 | return -EPERM; | |
442 | ||
443 | mutex_lock(&data->update_lock); | |
444 | data->config_fan = i2c_smbus_read_byte_data(client, | |
445 | LM63_REG_CONFIG_FAN); | |
446 | if (val == 1) | |
447 | data->config_fan |= 0x20; | |
448 | else | |
449 | data->config_fan &= ~0x20; | |
450 | i2c_smbus_write_byte_data(client, LM63_REG_CONFIG_FAN, | |
451 | data->config_fan); | |
452 | mutex_unlock(&data->update_lock); | |
453 | return count; | |
454 | } | |
455 | ||
2778fb13 DE |
456 | /* |
457 | * There are 8bit registers for both local(temp1) and remote(temp2) sensor. | |
458 | * For remote sensor registers temp2_offset has to be considered, | |
459 | * for local sensor it must not. | |
460 | * So we need separate 8bit accessors for local and remote sensor. | |
461 | */ | |
462 | static ssize_t show_local_temp8(struct device *dev, | |
463 | struct device_attribute *devattr, | |
464 | char *buf) | |
bc51ae11 JD |
465 | { |
466 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
467 | struct lm63_data *data = lm63_update_device(dev); | |
468 | return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index])); | |
1da177e4 | 469 | } |
bc51ae11 | 470 | |
2778fb13 DE |
471 | static ssize_t show_remote_temp8(struct device *dev, |
472 | struct device_attribute *devattr, | |
473 | char *buf) | |
474 | { | |
475 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
476 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e | 477 | return sprintf(buf, "%d\n", temp8_from_reg(data, attr->index) |
2778fb13 DE |
478 | + data->temp2_offset); |
479 | } | |
480 | ||
d216f680 JD |
481 | static ssize_t show_lut_temp(struct device *dev, |
482 | struct device_attribute *devattr, | |
483 | char *buf) | |
484 | { | |
485 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
486 | struct lm63_data *data = lm63_update_device(dev); | |
487 | return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index) | |
488 | + data->temp2_offset); | |
489 | } | |
490 | ||
94e55df4 GR |
491 | static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr, |
492 | const char *buf, size_t count) | |
bc51ae11 | 493 | { |
94e55df4 | 494 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
bc51ae11 JD |
495 | struct i2c_client *client = to_i2c_client(dev); |
496 | struct lm63_data *data = i2c_get_clientdata(client); | |
94e55df4 GR |
497 | int nr = attr->index; |
498 | int reg = nr == 2 ? LM63_REG_REMOTE_TCRIT : LM63_REG_LOCAL_HIGH; | |
662bda28 GR |
499 | long val; |
500 | int err; | |
94e55df4 | 501 | int temp; |
662bda28 GR |
502 | |
503 | err = kstrtol(buf, 10, &val); | |
504 | if (err) | |
505 | return err; | |
bc51ae11 | 506 | |
9a61bf63 | 507 | mutex_lock(&data->update_lock); |
94e55df4 GR |
508 | if (nr == 2) { |
509 | if (data->remote_unsigned) | |
510 | temp = TEMP8U_TO_REG(val - data->temp2_offset); | |
511 | else | |
512 | temp = TEMP8_TO_REG(val - data->temp2_offset); | |
513 | } else { | |
514 | temp = TEMP8_TO_REG(val); | |
515 | } | |
516 | data->temp8[nr] = temp; | |
517 | i2c_smbus_write_byte_data(client, reg, temp); | |
9a61bf63 | 518 | mutex_unlock(&data->update_lock); |
bc51ae11 | 519 | return count; |
1da177e4 | 520 | } |
bc51ae11 JD |
521 | |
522 | static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, | |
523 | char *buf) | |
524 | { | |
525 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
526 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e GR |
527 | int nr = attr->index; |
528 | int temp; | |
529 | ||
530 | if (!nr) { | |
531 | /* | |
532 | * Use unsigned temperature unless its value is zero. | |
533 | * If it is zero, use signed temperature. | |
534 | */ | |
535 | if (data->temp11u) | |
536 | temp = TEMP11_FROM_REG(data->temp11u); | |
537 | else | |
538 | temp = TEMP11_FROM_REG(data->temp11[nr]); | |
539 | } else { | |
540 | if (data->remote_unsigned && nr == 2) | |
541 | temp = TEMP11_FROM_REG((u16)data->temp11[nr]); | |
542 | else | |
543 | temp = TEMP11_FROM_REG(data->temp11[nr]); | |
544 | } | |
545 | return sprintf(buf, "%d\n", temp + data->temp2_offset); | |
1da177e4 | 546 | } |
bc51ae11 JD |
547 | |
548 | static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, | |
549 | const char *buf, size_t count) | |
550 | { | |
786375f7 | 551 | static const u8 reg[6] = { |
bc51ae11 JD |
552 | LM63_REG_REMOTE_LOW_MSB, |
553 | LM63_REG_REMOTE_LOW_LSB, | |
554 | LM63_REG_REMOTE_HIGH_MSB, | |
555 | LM63_REG_REMOTE_HIGH_LSB, | |
786375f7 GR |
556 | LM63_REG_REMOTE_OFFSET_MSB, |
557 | LM63_REG_REMOTE_OFFSET_LSB, | |
bc51ae11 JD |
558 | }; |
559 | ||
560 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
561 | struct i2c_client *client = to_i2c_client(dev); | |
562 | struct lm63_data *data = i2c_get_clientdata(client); | |
662bda28 GR |
563 | long val; |
564 | int err; | |
bc51ae11 JD |
565 | int nr = attr->index; |
566 | ||
662bda28 GR |
567 | err = kstrtol(buf, 10, &val); |
568 | if (err) | |
569 | return err; | |
570 | ||
9a61bf63 | 571 | mutex_lock(&data->update_lock); |
e872c91e GR |
572 | if (data->remote_unsigned && nr == 2) |
573 | data->temp11[nr] = TEMP11U_TO_REG(val - data->temp2_offset); | |
574 | else | |
575 | data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset); | |
576 | ||
bc51ae11 JD |
577 | i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], |
578 | data->temp11[nr] >> 8); | |
579 | i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], | |
580 | data->temp11[nr] & 0xff); | |
9a61bf63 | 581 | mutex_unlock(&data->update_lock); |
bc51ae11 | 582 | return count; |
1da177e4 | 583 | } |
1da177e4 | 584 | |
662bda28 GR |
585 | /* |
586 | * Hysteresis register holds a relative value, while we want to present | |
587 | * an absolute to user-space | |
588 | */ | |
589 | static ssize_t show_temp2_crit_hyst(struct device *dev, | |
590 | struct device_attribute *dummy, char *buf) | |
1da177e4 LT |
591 | { |
592 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e | 593 | return sprintf(buf, "%d\n", temp8_from_reg(data, 2) |
2778fb13 | 594 | + data->temp2_offset |
1da177e4 LT |
595 | - TEMP8_FROM_REG(data->temp2_crit_hyst)); |
596 | } | |
597 | ||
d216f680 JD |
598 | static ssize_t show_lut_temp_hyst(struct device *dev, |
599 | struct device_attribute *devattr, char *buf) | |
600 | { | |
601 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
602 | struct lm63_data *data = lm63_update_device(dev); | |
603 | ||
604 | return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index) | |
605 | + data->temp2_offset | |
606 | - TEMP8_FROM_REG(data->lut_temp_hyst)); | |
607 | } | |
608 | ||
662bda28 GR |
609 | /* |
610 | * And now the other way around, user-space provides an absolute | |
611 | * hysteresis value and we have to store a relative one | |
612 | */ | |
613 | static ssize_t set_temp2_crit_hyst(struct device *dev, | |
614 | struct device_attribute *dummy, | |
bc51ae11 | 615 | const char *buf, size_t count) |
1da177e4 LT |
616 | { |
617 | struct i2c_client *client = to_i2c_client(dev); | |
618 | struct lm63_data *data = i2c_get_clientdata(client); | |
662bda28 GR |
619 | long val; |
620 | int err; | |
1da177e4 LT |
621 | long hyst; |
622 | ||
662bda28 GR |
623 | err = kstrtol(buf, 10, &val); |
624 | if (err) | |
625 | return err; | |
626 | ||
9a61bf63 | 627 | mutex_lock(&data->update_lock); |
e872c91e | 628 | hyst = temp8_from_reg(data, 2) + data->temp2_offset - val; |
1da177e4 LT |
629 | i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST, |
630 | HYST_TO_REG(hyst)); | |
9a61bf63 | 631 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
632 | return count; |
633 | } | |
634 | ||
04738b2b GR |
635 | /* |
636 | * Set conversion rate. | |
637 | * client->update_lock must be held when calling this function. | |
638 | */ | |
639 | static void lm63_set_convrate(struct i2c_client *client, struct lm63_data *data, | |
640 | unsigned int interval) | |
641 | { | |
642 | int i; | |
643 | unsigned int update_interval; | |
644 | ||
645 | /* Shift calculations to avoid rounding errors */ | |
646 | interval <<= 6; | |
647 | ||
648 | /* find the nearest update rate */ | |
649 | update_interval = (1 << (LM63_MAX_CONVRATE + 6)) * 1000 | |
650 | / data->max_convrate_hz; | |
651 | for (i = 0; i < LM63_MAX_CONVRATE; i++, update_interval >>= 1) | |
652 | if (interval >= update_interval * 3 / 4) | |
653 | break; | |
654 | ||
655 | i2c_smbus_write_byte_data(client, LM63_REG_CONVRATE, i); | |
656 | data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, i); | |
657 | } | |
658 | ||
659 | static ssize_t show_update_interval(struct device *dev, | |
660 | struct device_attribute *attr, char *buf) | |
661 | { | |
662 | struct lm63_data *data = dev_get_drvdata(dev); | |
663 | ||
664 | return sprintf(buf, "%u\n", data->update_interval); | |
665 | } | |
666 | ||
667 | static ssize_t set_update_interval(struct device *dev, | |
668 | struct device_attribute *attr, | |
669 | const char *buf, size_t count) | |
670 | { | |
671 | struct i2c_client *client = to_i2c_client(dev); | |
672 | struct lm63_data *data = i2c_get_clientdata(client); | |
673 | unsigned long val; | |
674 | int err; | |
675 | ||
676 | err = kstrtoul(buf, 10, &val); | |
677 | if (err) | |
678 | return err; | |
679 | ||
680 | mutex_lock(&data->update_lock); | |
681 | lm63_set_convrate(client, data, SENSORS_LIMIT(val, 0, 100000)); | |
682 | mutex_unlock(&data->update_lock); | |
683 | ||
684 | return count; | |
685 | } | |
686 | ||
f496b2d4 GR |
687 | static ssize_t show_type(struct device *dev, struct device_attribute *attr, |
688 | char *buf) | |
689 | { | |
690 | struct i2c_client *client = to_i2c_client(dev); | |
691 | struct lm63_data *data = i2c_get_clientdata(client); | |
692 | ||
693 | return sprintf(buf, data->trutherm ? "1\n" : "2\n"); | |
694 | } | |
695 | ||
696 | static ssize_t set_type(struct device *dev, struct device_attribute *attr, | |
697 | const char *buf, size_t count) | |
698 | { | |
699 | struct i2c_client *client = to_i2c_client(dev); | |
700 | struct lm63_data *data = i2c_get_clientdata(client); | |
701 | unsigned long val; | |
702 | int ret; | |
703 | u8 reg; | |
704 | ||
705 | ret = kstrtoul(buf, 10, &val); | |
706 | if (ret < 0) | |
707 | return ret; | |
708 | if (val != 1 && val != 2) | |
709 | return -EINVAL; | |
710 | ||
711 | mutex_lock(&data->update_lock); | |
712 | data->trutherm = val == 1; | |
713 | reg = i2c_smbus_read_byte_data(client, LM96163_REG_TRUTHERM) & ~0x02; | |
714 | i2c_smbus_write_byte_data(client, LM96163_REG_TRUTHERM, | |
715 | reg | (data->trutherm ? 0x02 : 0x00)); | |
716 | data->valid = 0; | |
717 | mutex_unlock(&data->update_lock); | |
718 | ||
719 | return count; | |
720 | } | |
721 | ||
bc51ae11 JD |
722 | static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy, |
723 | char *buf) | |
1da177e4 LT |
724 | { |
725 | struct lm63_data *data = lm63_update_device(dev); | |
726 | return sprintf(buf, "%u\n", data->alarms); | |
727 | } | |
728 | ||
2d45771e JD |
729 | static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr, |
730 | char *buf) | |
731 | { | |
732 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
733 | struct lm63_data *data = lm63_update_device(dev); | |
734 | int bitnr = attr->index; | |
735 | ||
736 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
737 | } | |
738 | ||
bc51ae11 JD |
739 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); |
740 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan, | |
741 | set_fan, 1); | |
1da177e4 | 742 | |
d216f680 | 743 | static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 0); |
817c6cc5 JD |
744 | static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, |
745 | show_pwm1_enable, set_pwm1_enable); | |
d216f680 JD |
746 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IRUGO, show_pwm1, NULL, 1); |
747 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IRUGO, | |
748 | show_lut_temp, NULL, 3); | |
749 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp_hyst, S_IRUGO, | |
750 | show_lut_temp_hyst, NULL, 3); | |
751 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IRUGO, show_pwm1, NULL, 2); | |
752 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IRUGO, | |
753 | show_lut_temp, NULL, 4); | |
754 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp_hyst, S_IRUGO, | |
755 | show_lut_temp_hyst, NULL, 4); | |
756 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IRUGO, show_pwm1, NULL, 3); | |
757 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp, S_IRUGO, | |
758 | show_lut_temp, NULL, 5); | |
759 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp_hyst, S_IRUGO, | |
760 | show_lut_temp_hyst, NULL, 5); | |
761 | static SENSOR_DEVICE_ATTR(pwm1_auto_point4_pwm, S_IRUGO, show_pwm1, NULL, 4); | |
762 | static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp, S_IRUGO, | |
763 | show_lut_temp, NULL, 6); | |
764 | static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp_hyst, S_IRUGO, | |
765 | show_lut_temp_hyst, NULL, 6); | |
766 | static SENSOR_DEVICE_ATTR(pwm1_auto_point5_pwm, S_IRUGO, show_pwm1, NULL, 5); | |
767 | static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp, S_IRUGO, | |
768 | show_lut_temp, NULL, 7); | |
769 | static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp_hyst, S_IRUGO, | |
770 | show_lut_temp_hyst, NULL, 7); | |
771 | static SENSOR_DEVICE_ATTR(pwm1_auto_point6_pwm, S_IRUGO, show_pwm1, NULL, 6); | |
772 | static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp, S_IRUGO, | |
773 | show_lut_temp, NULL, 8); | |
774 | static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp_hyst, S_IRUGO, | |
775 | show_lut_temp_hyst, NULL, 8); | |
776 | static SENSOR_DEVICE_ATTR(pwm1_auto_point7_pwm, S_IRUGO, show_pwm1, NULL, 7); | |
777 | static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp, S_IRUGO, | |
778 | show_lut_temp, NULL, 9); | |
779 | static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp_hyst, S_IRUGO, | |
780 | show_lut_temp_hyst, NULL, 9); | |
781 | static SENSOR_DEVICE_ATTR(pwm1_auto_point8_pwm, S_IRUGO, show_pwm1, NULL, 8); | |
782 | static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp, S_IRUGO, | |
783 | show_lut_temp, NULL, 10); | |
784 | static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp_hyst, S_IRUGO, | |
785 | show_lut_temp_hyst, NULL, 10); | |
2fe28ab5 JD |
786 | static SENSOR_DEVICE_ATTR(pwm1_auto_point9_pwm, S_IRUGO, show_pwm1, NULL, 9); |
787 | static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp, S_IRUGO, | |
788 | show_lut_temp, NULL, 11); | |
789 | static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp_hyst, S_IRUGO, | |
790 | show_lut_temp_hyst, NULL, 11); | |
791 | static SENSOR_DEVICE_ATTR(pwm1_auto_point10_pwm, S_IRUGO, show_pwm1, NULL, 10); | |
792 | static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp, S_IRUGO, | |
793 | show_lut_temp, NULL, 12); | |
794 | static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp_hyst, S_IRUGO, | |
795 | show_lut_temp_hyst, NULL, 12); | |
796 | static SENSOR_DEVICE_ATTR(pwm1_auto_point11_pwm, S_IRUGO, show_pwm1, NULL, 11); | |
797 | static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp, S_IRUGO, | |
798 | show_lut_temp, NULL, 13); | |
799 | static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp_hyst, S_IRUGO, | |
800 | show_lut_temp_hyst, NULL, 13); | |
801 | static SENSOR_DEVICE_ATTR(pwm1_auto_point12_pwm, S_IRUGO, show_pwm1, NULL, 12); | |
802 | static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp, S_IRUGO, | |
803 | show_lut_temp, NULL, 14); | |
804 | static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp_hyst, S_IRUGO, | |
805 | show_lut_temp_hyst, NULL, 14); | |
1da177e4 | 806 | |
2778fb13 DE |
807 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0); |
808 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8, | |
94e55df4 | 809 | set_temp8, 1); |
1da177e4 | 810 | |
bc51ae11 JD |
811 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0); |
812 | static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, | |
813 | set_temp11, 1); | |
814 | static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11, | |
815 | set_temp11, 2); | |
786375f7 GR |
816 | static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11, |
817 | set_temp11, 3); | |
2778fb13 | 818 | static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8, |
94e55df4 | 819 | set_temp8, 2); |
1da177e4 LT |
820 | static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst, |
821 | set_temp2_crit_hyst); | |
822 | ||
f496b2d4 GR |
823 | static DEVICE_ATTR(temp2_type, S_IWUSR | S_IRUGO, show_type, set_type); |
824 | ||
2d45771e JD |
825 | /* Individual alarm files */ |
826 | static SENSOR_DEVICE_ATTR(fan1_min_alarm, S_IRUGO, show_alarm, NULL, 0); | |
827 | static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1); | |
7817a39e | 828 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2); |
2d45771e JD |
829 | static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3); |
830 | static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4); | |
831 | static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6); | |
832 | /* Raw alarm file for compatibility */ | |
1da177e4 LT |
833 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
834 | ||
04738b2b GR |
835 | static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval, |
836 | set_update_interval); | |
837 | ||
0e39e01c | 838 | static struct attribute *lm63_attributes[] = { |
d216f680 | 839 | &sensor_dev_attr_pwm1.dev_attr.attr, |
0e39e01c | 840 | &dev_attr_pwm1_enable.attr, |
d216f680 JD |
841 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, |
842 | &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, | |
843 | &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr, | |
844 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, | |
845 | &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, | |
846 | &sensor_dev_attr_pwm1_auto_point2_temp_hyst.dev_attr.attr, | |
847 | &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, | |
848 | &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, | |
849 | &sensor_dev_attr_pwm1_auto_point3_temp_hyst.dev_attr.attr, | |
850 | &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, | |
851 | &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, | |
852 | &sensor_dev_attr_pwm1_auto_point4_temp_hyst.dev_attr.attr, | |
853 | &sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr, | |
854 | &sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr, | |
855 | &sensor_dev_attr_pwm1_auto_point5_temp_hyst.dev_attr.attr, | |
856 | &sensor_dev_attr_pwm1_auto_point6_pwm.dev_attr.attr, | |
857 | &sensor_dev_attr_pwm1_auto_point6_temp.dev_attr.attr, | |
858 | &sensor_dev_attr_pwm1_auto_point6_temp_hyst.dev_attr.attr, | |
859 | &sensor_dev_attr_pwm1_auto_point7_pwm.dev_attr.attr, | |
860 | &sensor_dev_attr_pwm1_auto_point7_temp.dev_attr.attr, | |
861 | &sensor_dev_attr_pwm1_auto_point7_temp_hyst.dev_attr.attr, | |
862 | &sensor_dev_attr_pwm1_auto_point8_pwm.dev_attr.attr, | |
863 | &sensor_dev_attr_pwm1_auto_point8_temp.dev_attr.attr, | |
864 | &sensor_dev_attr_pwm1_auto_point8_temp_hyst.dev_attr.attr, | |
865 | ||
0e39e01c JD |
866 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
867 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
868 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
869 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
870 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
786375f7 | 871 | &sensor_dev_attr_temp2_offset.dev_attr.attr, |
0e39e01c JD |
872 | &sensor_dev_attr_temp2_crit.dev_attr.attr, |
873 | &dev_attr_temp2_crit_hyst.attr, | |
874 | ||
875 | &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, | |
7817a39e | 876 | &sensor_dev_attr_temp2_fault.dev_attr.attr, |
0e39e01c JD |
877 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, |
878 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, | |
879 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, | |
880 | &dev_attr_alarms.attr, | |
04738b2b | 881 | &dev_attr_update_interval.attr, |
0e39e01c JD |
882 | NULL |
883 | }; | |
884 | ||
2fe28ab5 JD |
885 | static struct attribute *lm63_attributes_extra_lut[] = { |
886 | &sensor_dev_attr_pwm1_auto_point9_pwm.dev_attr.attr, | |
887 | &sensor_dev_attr_pwm1_auto_point9_temp.dev_attr.attr, | |
888 | &sensor_dev_attr_pwm1_auto_point9_temp_hyst.dev_attr.attr, | |
889 | &sensor_dev_attr_pwm1_auto_point10_pwm.dev_attr.attr, | |
890 | &sensor_dev_attr_pwm1_auto_point10_temp.dev_attr.attr, | |
891 | &sensor_dev_attr_pwm1_auto_point10_temp_hyst.dev_attr.attr, | |
892 | &sensor_dev_attr_pwm1_auto_point11_pwm.dev_attr.attr, | |
893 | &sensor_dev_attr_pwm1_auto_point11_temp.dev_attr.attr, | |
894 | &sensor_dev_attr_pwm1_auto_point11_temp_hyst.dev_attr.attr, | |
895 | &sensor_dev_attr_pwm1_auto_point12_pwm.dev_attr.attr, | |
896 | &sensor_dev_attr_pwm1_auto_point12_temp.dev_attr.attr, | |
897 | &sensor_dev_attr_pwm1_auto_point12_temp_hyst.dev_attr.attr, | |
898 | NULL | |
899 | }; | |
900 | ||
901 | static const struct attribute_group lm63_group_extra_lut = { | |
902 | .attrs = lm63_attributes_extra_lut, | |
903 | }; | |
904 | ||
94e55df4 GR |
905 | /* |
906 | * On LM63, temp2_crit can be set only once, which should be job | |
907 | * of the bootloader. | |
908 | * On LM64, temp2_crit can always be set. | |
909 | * On LM96163, temp2_crit can be set if bit 1 of the configuration | |
910 | * register is true. | |
911 | */ | |
912 | static umode_t lm63_attribute_mode(struct kobject *kobj, | |
913 | struct attribute *attr, int index) | |
914 | { | |
915 | struct device *dev = container_of(kobj, struct device, kobj); | |
916 | struct i2c_client *client = to_i2c_client(dev); | |
917 | struct lm63_data *data = i2c_get_clientdata(client); | |
918 | ||
919 | if (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr | |
920 | && (data->kind == lm64 || | |
921 | (data->kind == lm96163 && (data->config & 0x02)))) | |
922 | return attr->mode | S_IWUSR; | |
923 | ||
924 | return attr->mode; | |
925 | } | |
926 | ||
0e39e01c | 927 | static const struct attribute_group lm63_group = { |
94e55df4 | 928 | .is_visible = lm63_attribute_mode, |
0e39e01c JD |
929 | .attrs = lm63_attributes, |
930 | }; | |
931 | ||
932 | static struct attribute *lm63_attributes_fan1[] = { | |
933 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
934 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
935 | ||
936 | &sensor_dev_attr_fan1_min_alarm.dev_attr.attr, | |
937 | NULL | |
938 | }; | |
939 | ||
940 | static const struct attribute_group lm63_group_fan1 = { | |
941 | .attrs = lm63_attributes_fan1, | |
942 | }; | |
943 | ||
1da177e4 LT |
944 | /* |
945 | * Real code | |
946 | */ | |
947 | ||
d5957be2 | 948 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
dac27dce | 949 | static int lm63_detect(struct i2c_client *client, |
d5957be2 | 950 | struct i2c_board_info *info) |
1da177e4 | 951 | { |
dac27dce | 952 | struct i2c_adapter *adapter = client->adapter; |
52df6440 JD |
953 | u8 man_id, chip_id, reg_config1, reg_config2; |
954 | u8 reg_alert_status, reg_alert_mask; | |
dac27dce | 955 | int address = client->addr; |
1da177e4 LT |
956 | |
957 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
d5957be2 | 958 | return -ENODEV; |
1da177e4 | 959 | |
dac27dce JD |
960 | man_id = i2c_smbus_read_byte_data(client, LM63_REG_MAN_ID); |
961 | chip_id = i2c_smbus_read_byte_data(client, LM63_REG_CHIP_ID); | |
52df6440 | 962 | |
dac27dce JD |
963 | reg_config1 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); |
964 | reg_config2 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG2); | |
965 | reg_alert_status = i2c_smbus_read_byte_data(client, | |
52df6440 | 966 | LM63_REG_ALERT_STATUS); |
dac27dce | 967 | reg_alert_mask = i2c_smbus_read_byte_data(client, LM63_REG_ALERT_MASK); |
52df6440 JD |
968 | |
969 | if (man_id != 0x01 /* National Semiconductor */ | |
52df6440 JD |
970 | || (reg_config1 & 0x18) != 0x00 |
971 | || (reg_config2 & 0xF8) != 0x00 | |
972 | || (reg_alert_status & 0x20) != 0x00 | |
973 | || (reg_alert_mask & 0xA4) != 0xA4) { | |
974 | dev_dbg(&adapter->dev, | |
975 | "Unsupported chip (man_id=0x%02X, chip_id=0x%02X)\n", | |
976 | man_id, chip_id); | |
977 | return -ENODEV; | |
1da177e4 LT |
978 | } |
979 | ||
10f2ed31 MG |
980 | if (chip_id == 0x41 && address == 0x4c) |
981 | strlcpy(info->type, "lm63", I2C_NAME_SIZE); | |
982 | else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e)) | |
983 | strlcpy(info->type, "lm64", I2C_NAME_SIZE); | |
210961c4 GR |
984 | else if (chip_id == 0x49 && address == 0x4c) |
985 | strlcpy(info->type, "lm96163", I2C_NAME_SIZE); | |
10f2ed31 MG |
986 | else |
987 | return -ENODEV; | |
d5957be2 JD |
988 | |
989 | return 0; | |
990 | } | |
991 | ||
662bda28 GR |
992 | /* |
993 | * Ideally we shouldn't have to initialize anything, since the BIOS | |
994 | * should have taken care of everything | |
995 | */ | |
1da177e4 LT |
996 | static void lm63_init_client(struct i2c_client *client) |
997 | { | |
998 | struct lm63_data *data = i2c_get_clientdata(client); | |
04738b2b | 999 | u8 convrate; |
1da177e4 LT |
1000 | |
1001 | data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); | |
1002 | data->config_fan = i2c_smbus_read_byte_data(client, | |
1003 | LM63_REG_CONFIG_FAN); | |
1004 | ||
1005 | /* Start converting if needed */ | |
1006 | if (data->config & 0x40) { /* standby */ | |
898eb71c | 1007 | dev_dbg(&client->dev, "Switching to operational mode\n"); |
1da177e4 LT |
1008 | data->config &= 0xA7; |
1009 | i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1, | |
1010 | data->config); | |
1011 | } | |
409c0b5b JD |
1012 | /* Tachometer is always enabled on LM64 */ |
1013 | if (data->kind == lm64) | |
1014 | data->config |= 0x04; | |
1da177e4 LT |
1015 | |
1016 | /* We may need pwm1_freq before ever updating the client data */ | |
1017 | data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ); | |
1018 | if (data->pwm1_freq == 0) | |
1019 | data->pwm1_freq = 1; | |
1020 | ||
04738b2b GR |
1021 | switch (data->kind) { |
1022 | case lm63: | |
1023 | case lm64: | |
1024 | data->max_convrate_hz = LM63_MAX_CONVRATE_HZ; | |
2fe28ab5 | 1025 | data->lut_size = 8; |
04738b2b GR |
1026 | break; |
1027 | case lm96163: | |
1028 | data->max_convrate_hz = LM96163_MAX_CONVRATE_HZ; | |
2fe28ab5 | 1029 | data->lut_size = 12; |
f496b2d4 GR |
1030 | data->trutherm |
1031 | = i2c_smbus_read_byte_data(client, | |
1032 | LM96163_REG_TRUTHERM) & 0x02; | |
04738b2b GR |
1033 | break; |
1034 | } | |
1035 | convrate = i2c_smbus_read_byte_data(client, LM63_REG_CONVRATE); | |
1036 | if (unlikely(convrate > LM63_MAX_CONVRATE)) | |
1037 | convrate = LM63_MAX_CONVRATE; | |
1038 | data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, | |
1039 | convrate); | |
1040 | ||
210961c4 | 1041 | /* |
e872c91e GR |
1042 | * For LM96163, check if high resolution PWM |
1043 | * and unsigned temperature format is enabled. | |
210961c4 GR |
1044 | */ |
1045 | if (data->kind == lm96163) { | |
1046 | u8 config_enhanced | |
1047 | = i2c_smbus_read_byte_data(client, | |
1048 | LM96163_REG_CONFIG_ENHANCED); | |
d216f680 JD |
1049 | if (config_enhanced & 0x20) |
1050 | data->lut_temp_highres = true; | |
210961c4 GR |
1051 | if ((config_enhanced & 0x10) |
1052 | && !(data->config_fan & 0x08) && data->pwm1_freq == 8) | |
1053 | data->pwm_highres = true; | |
1054 | if (config_enhanced & 0x08) | |
e872c91e | 1055 | data->remote_unsigned = true; |
210961c4 GR |
1056 | } |
1057 | ||
1da177e4 | 1058 | /* Show some debug info about the LM63 configuration */ |
409c0b5b JD |
1059 | if (data->kind == lm63) |
1060 | dev_dbg(&client->dev, "Alert/tach pin configured for %s\n", | |
1061 | (data->config & 0x04) ? "tachometer input" : | |
1062 | "alert output"); | |
1da177e4 LT |
1063 | dev_dbg(&client->dev, "PWM clock %s kHz, output frequency %u Hz\n", |
1064 | (data->config_fan & 0x08) ? "1.4" : "360", | |
1065 | ((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq); | |
1066 | dev_dbg(&client->dev, "PWM output active %s, %s mode\n", | |
1067 | (data->config_fan & 0x10) ? "low" : "high", | |
1068 | (data->config_fan & 0x20) ? "manual" : "auto"); | |
1069 | } | |
1070 | ||
dac27dce JD |
1071 | static int lm63_probe(struct i2c_client *client, |
1072 | const struct i2c_device_id *id) | |
1da177e4 | 1073 | { |
dac27dce JD |
1074 | struct lm63_data *data; |
1075 | int err; | |
1da177e4 | 1076 | |
dac27dce JD |
1077 | data = kzalloc(sizeof(struct lm63_data), GFP_KERNEL); |
1078 | if (!data) { | |
1079 | err = -ENOMEM; | |
1080 | goto exit; | |
1081 | } | |
1082 | ||
1083 | i2c_set_clientdata(client, data); | |
1084 | data->valid = 0; | |
1085 | mutex_init(&data->update_lock); | |
1086 | ||
1087 | /* Set the device type */ | |
1088 | data->kind = id->driver_data; | |
1089 | if (data->kind == lm64) | |
1090 | data->temp2_offset = 16000; | |
1091 | ||
1092 | /* Initialize chip */ | |
1093 | lm63_init_client(client); | |
1094 | ||
1095 | /* Register sysfs hooks */ | |
1096 | err = sysfs_create_group(&client->dev.kobj, &lm63_group); | |
1097 | if (err) | |
1098 | goto exit_free; | |
1099 | if (data->config & 0x04) { /* tachometer enabled */ | |
1100 | err = sysfs_create_group(&client->dev.kobj, &lm63_group_fan1); | |
1101 | if (err) | |
1102 | goto exit_remove_files; | |
1103 | } | |
1104 | if (data->kind == lm96163) { | |
1105 | err = device_create_file(&client->dev, &dev_attr_temp2_type); | |
1106 | if (err) | |
1107 | goto exit_remove_files; | |
1108 | ||
1109 | err = sysfs_create_group(&client->dev.kobj, | |
1110 | &lm63_group_extra_lut); | |
1111 | if (err) | |
1112 | goto exit_remove_files; | |
1113 | } | |
1114 | ||
1115 | data->hwmon_dev = hwmon_device_register(&client->dev); | |
1116 | if (IS_ERR(data->hwmon_dev)) { | |
1117 | err = PTR_ERR(data->hwmon_dev); | |
1118 | goto exit_remove_files; | |
1119 | } | |
1120 | ||
1121 | return 0; | |
1122 | ||
1123 | exit_remove_files: | |
0e39e01c JD |
1124 | sysfs_remove_group(&client->dev.kobj, &lm63_group); |
1125 | sysfs_remove_group(&client->dev.kobj, &lm63_group_fan1); | |
2fe28ab5 JD |
1126 | if (data->kind == lm96163) { |
1127 | device_remove_file(&client->dev, &dev_attr_temp2_type); | |
1128 | sysfs_remove_group(&client->dev.kobj, &lm63_group_extra_lut); | |
1129 | } | |
dac27dce | 1130 | exit_free: |
943b0830 | 1131 | kfree(data); |
dac27dce JD |
1132 | exit: |
1133 | return err; | |
1da177e4 LT |
1134 | } |
1135 | ||
dac27dce | 1136 | static int lm63_remove(struct i2c_client *client) |
1da177e4 | 1137 | { |
1da177e4 | 1138 | struct lm63_data *data = i2c_get_clientdata(client); |
1da177e4 | 1139 | |
dac27dce JD |
1140 | hwmon_device_unregister(data->hwmon_dev); |
1141 | sysfs_remove_group(&client->dev.kobj, &lm63_group); | |
1142 | sysfs_remove_group(&client->dev.kobj, &lm63_group_fan1); | |
1143 | if (data->kind == lm96163) { | |
1144 | device_remove_file(&client->dev, &dev_attr_temp2_type); | |
1145 | sysfs_remove_group(&client->dev.kobj, &lm63_group_extra_lut); | |
1da177e4 LT |
1146 | } |
1147 | ||
dac27dce JD |
1148 | kfree(data); |
1149 | return 0; | |
1150 | } | |
d216f680 | 1151 | |
dac27dce JD |
1152 | /* |
1153 | * Driver data (common to all clients) | |
1154 | */ | |
d216f680 | 1155 | |
dac27dce JD |
1156 | static const struct i2c_device_id lm63_id[] = { |
1157 | { "lm63", lm63 }, | |
1158 | { "lm64", lm64 }, | |
1159 | { "lm96163", lm96163 }, | |
1160 | { } | |
1161 | }; | |
1162 | MODULE_DEVICE_TABLE(i2c, lm63_id); | |
1da177e4 | 1163 | |
dac27dce JD |
1164 | static struct i2c_driver lm63_driver = { |
1165 | .class = I2C_CLASS_HWMON, | |
1166 | .driver = { | |
1167 | .name = "lm63", | |
1168 | }, | |
1169 | .probe = lm63_probe, | |
1170 | .remove = lm63_remove, | |
1171 | .id_table = lm63_id, | |
1172 | .detect = lm63_detect, | |
1173 | .address_list = normal_i2c, | |
1174 | }; | |
1da177e4 | 1175 | |
f0967eea | 1176 | module_i2c_driver(lm63_driver); |
1da177e4 LT |
1177 | |
1178 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); | |
1179 | MODULE_DESCRIPTION("LM63 driver"); | |
1180 | MODULE_LICENSE("GPL"); |