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1da177e4 LT |
1 | /* |
2 | * lm90.c - Part of lm_sensors, Linux kernel modules for hardware | |
3 | * monitoring | |
95238364 | 4 | * Copyright (C) 2003-2010 Jean Delvare <khali@linux-fr.org> |
1da177e4 LT |
5 | * |
6 | * Based on the lm83 driver. The LM90 is a sensor chip made by National | |
7 | * Semiconductor. It reports up to two temperatures (its own plus up to | |
8 | * one external one) with a 0.125 deg resolution (1 deg for local | |
a874a10c | 9 | * temperature) and a 3-4 deg accuracy. |
1da177e4 LT |
10 | * |
11 | * This driver also supports the LM89 and LM99, two other sensor chips | |
12 | * made by National Semiconductor. Both have an increased remote | |
13 | * temperature measurement accuracy (1 degree), and the LM99 | |
14 | * additionally shifts remote temperatures (measured and limits) by 16 | |
97ae60bb | 15 | * degrees, which allows for higher temperatures measurement. |
44bbe87e | 16 | * Note that there is no way to differentiate between both chips. |
97ae60bb | 17 | * When device is auto-detected, the driver will assume an LM99. |
1da177e4 LT |
18 | * |
19 | * This driver also supports the LM86, another sensor chip made by | |
20 | * National Semiconductor. It is exactly similar to the LM90 except it | |
21 | * has a higher accuracy. | |
1da177e4 LT |
22 | * |
23 | * This driver also supports the ADM1032, a sensor chip made by Analog | |
24 | * Devices. That chip is similar to the LM90, with a few differences | |
a874a10c JD |
25 | * that are not handled by this driver. Among others, it has a higher |
26 | * accuracy than the LM90, much like the LM86 does. | |
1da177e4 LT |
27 | * |
28 | * This driver also supports the MAX6657, MAX6658 and MAX6659 sensor | |
a874a10c | 29 | * chips made by Maxim. These chips are similar to the LM86. |
44bbe87e | 30 | * Note that there is no easy way to differentiate between the three |
6948708d GR |
31 | * variants. We use the device address to detect MAX6659, which will result |
32 | * in a detection as max6657 if it is on address 0x4c. The extra address | |
33 | * and features of the MAX6659 are only supported if the chip is configured | |
34 | * explicitly as max6659, or if its address is not 0x4c. | |
35 | * These chips lack the remote temperature offset feature. | |
1da177e4 | 36 | * |
1a51e068 DW |
37 | * This driver also supports the MAX6646, MAX6647, MAX6648, MAX6649 and |
38 | * MAX6692 chips made by Maxim. These are again similar to the LM86, | |
39 | * but they use unsigned temperature values and can report temperatures | |
40 | * from 0 to 145 degrees. | |
271dabf5 | 41 | * |
32c82a93 RB |
42 | * This driver also supports the MAX6680 and MAX6681, two other sensor |
43 | * chips made by Maxim. These are quite similar to the other Maxim | |
a874a10c JD |
44 | * chips. The MAX6680 and MAX6681 only differ in the pinout so they can |
45 | * be treated identically. | |
32c82a93 | 46 | * |
06e1c0a2 GR |
47 | * This driver also supports the MAX6695 and MAX6696, two other sensor |
48 | * chips made by Maxim. These are also quite similar to other Maxim | |
49 | * chips, but support three temperature sensors instead of two. MAX6695 | |
50 | * and MAX6696 only differ in the pinout so they can be treated identically. | |
51 | * | |
23b2d477 NC |
52 | * This driver also supports the ADT7461 chip from Analog Devices. |
53 | * It's supported in both compatibility and extended mode. It is mostly | |
54 | * compatible with LM90 except for a data format difference for the | |
55 | * temperature value registers. | |
1da177e4 LT |
56 | * |
57 | * Since the LM90 was the first chipset supported by this driver, most | |
58 | * comments will refer to this chipset, but are actually general and | |
59 | * concern all supported chipsets, unless mentioned otherwise. | |
60 | * | |
61 | * This program is free software; you can redistribute it and/or modify | |
62 | * it under the terms of the GNU General Public License as published by | |
63 | * the Free Software Foundation; either version 2 of the License, or | |
64 | * (at your option) any later version. | |
65 | * | |
66 | * This program is distributed in the hope that it will be useful, | |
67 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
68 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
69 | * GNU General Public License for more details. | |
70 | * | |
71 | * You should have received a copy of the GNU General Public License | |
72 | * along with this program; if not, write to the Free Software | |
73 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
74 | */ | |
75 | ||
1da177e4 LT |
76 | #include <linux/module.h> |
77 | #include <linux/init.h> | |
78 | #include <linux/slab.h> | |
79 | #include <linux/jiffies.h> | |
80 | #include <linux/i2c.h> | |
10c08f81 | 81 | #include <linux/hwmon-sysfs.h> |
943b0830 MH |
82 | #include <linux/hwmon.h> |
83 | #include <linux/err.h> | |
9a61bf63 | 84 | #include <linux/mutex.h> |
0e39e01c | 85 | #include <linux/sysfs.h> |
1da177e4 LT |
86 | |
87 | /* | |
88 | * Addresses to scan | |
89 | * Address is fully defined internally and cannot be changed except for | |
32c82a93 | 90 | * MAX6659, MAX6680 and MAX6681. |
271dabf5 BH |
91 | * LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6649, MAX6657 |
92 | * and MAX6658 have address 0x4c. | |
93 | * ADM1032-2, ADT7461-2, LM89-1, LM99-1 and MAX6646 have address 0x4d. | |
94 | * MAX6647 has address 0x4e. | |
13c84951 | 95 | * MAX6659 can have address 0x4c, 0x4d or 0x4e. |
32c82a93 RB |
96 | * MAX6680 and MAX6681 can have address 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, |
97 | * 0x4c, 0x4d or 0x4e. | |
1da177e4 LT |
98 | */ |
99 | ||
25e9c86d MH |
100 | static const unsigned short normal_i2c[] = { |
101 | 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e, I2C_CLIENT_END }; | |
1da177e4 | 102 | |
13c84951 | 103 | enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680, |
06e1c0a2 | 104 | max6646, w83l771, max6696 }; |
1da177e4 LT |
105 | |
106 | /* | |
107 | * The LM90 registers | |
108 | */ | |
109 | ||
110 | #define LM90_REG_R_MAN_ID 0xFE | |
111 | #define LM90_REG_R_CHIP_ID 0xFF | |
112 | #define LM90_REG_R_CONFIG1 0x03 | |
113 | #define LM90_REG_W_CONFIG1 0x09 | |
114 | #define LM90_REG_R_CONFIG2 0xBF | |
115 | #define LM90_REG_W_CONFIG2 0xBF | |
116 | #define LM90_REG_R_CONVRATE 0x04 | |
117 | #define LM90_REG_W_CONVRATE 0x0A | |
118 | #define LM90_REG_R_STATUS 0x02 | |
119 | #define LM90_REG_R_LOCAL_TEMP 0x00 | |
120 | #define LM90_REG_R_LOCAL_HIGH 0x05 | |
121 | #define LM90_REG_W_LOCAL_HIGH 0x0B | |
122 | #define LM90_REG_R_LOCAL_LOW 0x06 | |
123 | #define LM90_REG_W_LOCAL_LOW 0x0C | |
124 | #define LM90_REG_R_LOCAL_CRIT 0x20 | |
125 | #define LM90_REG_W_LOCAL_CRIT 0x20 | |
126 | #define LM90_REG_R_REMOTE_TEMPH 0x01 | |
127 | #define LM90_REG_R_REMOTE_TEMPL 0x10 | |
128 | #define LM90_REG_R_REMOTE_OFFSH 0x11 | |
129 | #define LM90_REG_W_REMOTE_OFFSH 0x11 | |
130 | #define LM90_REG_R_REMOTE_OFFSL 0x12 | |
131 | #define LM90_REG_W_REMOTE_OFFSL 0x12 | |
132 | #define LM90_REG_R_REMOTE_HIGHH 0x07 | |
133 | #define LM90_REG_W_REMOTE_HIGHH 0x0D | |
134 | #define LM90_REG_R_REMOTE_HIGHL 0x13 | |
135 | #define LM90_REG_W_REMOTE_HIGHL 0x13 | |
136 | #define LM90_REG_R_REMOTE_LOWH 0x08 | |
137 | #define LM90_REG_W_REMOTE_LOWH 0x0E | |
138 | #define LM90_REG_R_REMOTE_LOWL 0x14 | |
139 | #define LM90_REG_W_REMOTE_LOWL 0x14 | |
140 | #define LM90_REG_R_REMOTE_CRIT 0x19 | |
141 | #define LM90_REG_W_REMOTE_CRIT 0x19 | |
142 | #define LM90_REG_R_TCRIT_HYST 0x21 | |
143 | #define LM90_REG_W_TCRIT_HYST 0x21 | |
144 | ||
06e1c0a2 | 145 | /* MAX6646/6647/6649/6657/6658/6659/6695/6696 registers */ |
f65e1708 JD |
146 | |
147 | #define MAX6657_REG_R_LOCAL_TEMPL 0x11 | |
06e1c0a2 | 148 | #define MAX6696_REG_R_STATUS2 0x12 |
6948708d GR |
149 | #define MAX6659_REG_R_REMOTE_EMERG 0x16 |
150 | #define MAX6659_REG_W_REMOTE_EMERG 0x16 | |
151 | #define MAX6659_REG_R_LOCAL_EMERG 0x17 | |
152 | #define MAX6659_REG_W_LOCAL_EMERG 0x17 | |
f65e1708 | 153 | |
23b2d477 NC |
154 | /* |
155 | * Device flags | |
156 | */ | |
88073bb1 GR |
157 | #define LM90_FLAG_ADT7461_EXT (1 << 0) /* ADT7461 extended mode */ |
158 | /* Device features */ | |
159 | #define LM90_HAVE_OFFSET (1 << 1) /* temperature offset register */ | |
160 | #define LM90_HAVE_LOCAL_EXT (1 << 2) /* extended local temperature */ | |
161 | #define LM90_HAVE_REM_LIMIT_EXT (1 << 3) /* extended remote limit */ | |
6948708d | 162 | #define LM90_HAVE_EMERGENCY (1 << 4) /* 3rd upper (emergency) limit */ |
06e1c0a2 GR |
163 | #define LM90_HAVE_EMERGENCY_ALARM (1 << 5)/* emergency alarm */ |
164 | #define LM90_HAVE_TEMP3 (1 << 6) /* 3rd temperature sensor */ | |
1179324c | 165 | #define LM90_HAVE_BROKEN_ALERT (1 << 7) /* Broken alert */ |
23b2d477 | 166 | |
1da177e4 LT |
167 | /* |
168 | * Driver data (common to all clients) | |
169 | */ | |
170 | ||
9b0e8526 JD |
171 | static const struct i2c_device_id lm90_id[] = { |
172 | { "adm1032", adm1032 }, | |
173 | { "adt7461", adt7461 }, | |
174 | { "lm90", lm90 }, | |
175 | { "lm86", lm86 }, | |
97ae60bb JD |
176 | { "lm89", lm86 }, |
177 | { "lm99", lm99 }, | |
271dabf5 BH |
178 | { "max6646", max6646 }, |
179 | { "max6647", max6646 }, | |
180 | { "max6649", max6646 }, | |
9b0e8526 JD |
181 | { "max6657", max6657 }, |
182 | { "max6658", max6657 }, | |
13c84951 | 183 | { "max6659", max6659 }, |
9b0e8526 JD |
184 | { "max6680", max6680 }, |
185 | { "max6681", max6680 }, | |
06e1c0a2 GR |
186 | { "max6695", max6696 }, |
187 | { "max6696", max6696 }, | |
6771ea1f | 188 | { "w83l771", w83l771 }, |
9b0e8526 JD |
189 | { } |
190 | }; | |
191 | MODULE_DEVICE_TABLE(i2c, lm90_id); | |
192 | ||
4667bcb8 GR |
193 | /* |
194 | * chip type specific parameters | |
195 | */ | |
196 | struct lm90_params { | |
197 | u32 flags; /* Capabilities */ | |
198 | u16 alert_alarms; /* Which alarm bits trigger ALERT# */ | |
199 | /* Upper 8 bits for max6695/96 */ | |
200 | }; | |
201 | ||
202 | static const struct lm90_params lm90_params[] = { | |
203 | [adm1032] = { | |
1179324c GR |
204 | .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT |
205 | | LM90_HAVE_BROKEN_ALERT, | |
4667bcb8 GR |
206 | .alert_alarms = 0x7c, |
207 | }, | |
208 | [adt7461] = { | |
1179324c GR |
209 | .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT |
210 | | LM90_HAVE_BROKEN_ALERT, | |
4667bcb8 GR |
211 | .alert_alarms = 0x7c, |
212 | }, | |
213 | [lm86] = { | |
214 | .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT, | |
215 | .alert_alarms = 0x7b, | |
216 | }, | |
217 | [lm90] = { | |
218 | .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT, | |
219 | .alert_alarms = 0x7b, | |
220 | }, | |
221 | [lm99] = { | |
222 | .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT, | |
223 | .alert_alarms = 0x7b, | |
224 | }, | |
225 | [max6646] = { | |
226 | .flags = LM90_HAVE_LOCAL_EXT, | |
227 | .alert_alarms = 0x7c, | |
228 | }, | |
229 | [max6657] = { | |
230 | .flags = LM90_HAVE_LOCAL_EXT, | |
231 | .alert_alarms = 0x7c, | |
232 | }, | |
233 | [max6659] = { | |
234 | .flags = LM90_HAVE_LOCAL_EXT | LM90_HAVE_EMERGENCY, | |
235 | .alert_alarms = 0x7c, | |
236 | }, | |
237 | [max6680] = { | |
238 | .flags = LM90_HAVE_OFFSET, | |
239 | .alert_alarms = 0x7c, | |
240 | }, | |
241 | [max6696] = { | |
242 | .flags = LM90_HAVE_LOCAL_EXT | LM90_HAVE_EMERGENCY | |
243 | | LM90_HAVE_EMERGENCY_ALARM | LM90_HAVE_TEMP3, | |
244 | .alert_alarms = 0x187c, | |
245 | }, | |
246 | [w83l771] = { | |
247 | .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT, | |
248 | .alert_alarms = 0x7c, | |
249 | }, | |
250 | }; | |
251 | ||
1da177e4 LT |
252 | /* |
253 | * Client data (each client gets its own) | |
254 | */ | |
255 | ||
256 | struct lm90_data { | |
1beeffe4 | 257 | struct device *hwmon_dev; |
9a61bf63 | 258 | struct mutex update_lock; |
1da177e4 LT |
259 | char valid; /* zero until following fields are valid */ |
260 | unsigned long last_updated; /* in jiffies */ | |
261 | int kind; | |
4667bcb8 | 262 | u32 flags; |
1da177e4 | 263 | |
95238364 | 264 | u8 config_orig; /* Original configuration register value */ |
06e1c0a2 GR |
265 | u16 alert_alarms; /* Which alarm bits trigger ALERT# */ |
266 | /* Upper 8 bits for max6695/96 */ | |
95238364 | 267 | |
1da177e4 | 268 | /* registers values */ |
06e1c0a2 | 269 | s8 temp8[8]; /* 0: local low limit |
f65e1708 JD |
270 | 1: local high limit |
271 | 2: local critical limit | |
6948708d | 272 | 3: remote critical limit |
06e1c0a2 GR |
273 | 4: local emergency limit (max6659 and max6695/96) |
274 | 5: remote emergency limit (max6659 and max6695/96) | |
275 | 6: remote 2 critical limit (max6695/96 only) | |
276 | 7: remote 2 emergency limit (max6695/96 only) */ | |
277 | s16 temp11[8]; /* 0: remote input | |
30d7394b | 278 | 1: remote low limit |
69f2f96d | 279 | 2: remote high limit |
06e1c0a2 GR |
280 | 3: remote offset (except max6646, max6657/58/59, |
281 | and max6695/96) | |
282 | 4: local input | |
283 | 5: remote 2 input (max6695/96 only) | |
284 | 6: remote 2 low limit (max6695/96 only) | |
285 | 7: remote 2 high limit (ma6695/96 only) */ | |
1da177e4 | 286 | u8 temp_hyst; |
06e1c0a2 | 287 | u16 alarms; /* bitvector (upper 8 bits for max6695/96) */ |
1da177e4 LT |
288 | }; |
289 | ||
15b66ab6 GR |
290 | /* |
291 | * Support functions | |
292 | */ | |
293 | ||
294 | /* | |
295 | * The ADM1032 supports PEC but not on write byte transactions, so we need | |
296 | * to explicitly ask for a transaction without PEC. | |
297 | */ | |
298 | static inline s32 adm1032_write_byte(struct i2c_client *client, u8 value) | |
299 | { | |
300 | return i2c_smbus_xfer(client->adapter, client->addr, | |
301 | client->flags & ~I2C_CLIENT_PEC, | |
302 | I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL); | |
303 | } | |
304 | ||
305 | /* | |
306 | * It is assumed that client->update_lock is held (unless we are in | |
307 | * detection or initialization steps). This matters when PEC is enabled, | |
308 | * because we don't want the address pointer to change between the write | |
309 | * byte and the read byte transactions. | |
310 | */ | |
311 | static int lm90_read_reg(struct i2c_client *client, u8 reg, u8 *value) | |
312 | { | |
313 | int err; | |
314 | ||
315 | if (client->flags & I2C_CLIENT_PEC) { | |
316 | err = adm1032_write_byte(client, reg); | |
317 | if (err >= 0) | |
318 | err = i2c_smbus_read_byte(client); | |
319 | } else | |
320 | err = i2c_smbus_read_byte_data(client, reg); | |
321 | ||
322 | if (err < 0) { | |
323 | dev_warn(&client->dev, "Register %#02x read failed (%d)\n", | |
324 | reg, err); | |
325 | return err; | |
326 | } | |
327 | *value = err; | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
332 | static int lm90_read16(struct i2c_client *client, u8 regh, u8 regl, u16 *value) | |
333 | { | |
334 | int err; | |
335 | u8 oldh, newh, l; | |
336 | ||
337 | /* | |
338 | * There is a trick here. We have to read two registers to have the | |
339 | * sensor temperature, but we have to beware a conversion could occur | |
340 | * inbetween the readings. The datasheet says we should either use | |
341 | * the one-shot conversion register, which we don't want to do | |
342 | * (disables hardware monitoring) or monitor the busy bit, which is | |
343 | * impossible (we can't read the values and monitor that bit at the | |
344 | * exact same time). So the solution used here is to read the high | |
345 | * byte once, then the low byte, then the high byte again. If the new | |
346 | * high byte matches the old one, then we have a valid reading. Else | |
347 | * we have to read the low byte again, and now we believe we have a | |
348 | * correct reading. | |
349 | */ | |
350 | if ((err = lm90_read_reg(client, regh, &oldh)) | |
351 | || (err = lm90_read_reg(client, regl, &l)) | |
352 | || (err = lm90_read_reg(client, regh, &newh))) | |
353 | return err; | |
354 | if (oldh != newh) { | |
355 | err = lm90_read_reg(client, regl, &l); | |
356 | if (err) | |
357 | return err; | |
358 | } | |
359 | *value = (newh << 8) | l; | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
364 | /* | |
365 | * client->update_lock must be held when calling this function (unless we are | |
366 | * in detection or initialization steps), and while a remote channel other | |
367 | * than channel 0 is selected. Also, calling code must make sure to re-select | |
368 | * external channel 0 before releasing the lock. This is necessary because | |
369 | * various registers have different meanings as a result of selecting a | |
370 | * non-default remote channel. | |
371 | */ | |
372 | static inline void lm90_select_remote_channel(struct i2c_client *client, | |
373 | struct lm90_data *data, | |
374 | int channel) | |
375 | { | |
376 | u8 config; | |
377 | ||
378 | if (data->kind == max6696) { | |
379 | lm90_read_reg(client, LM90_REG_R_CONFIG1, &config); | |
380 | config &= ~0x08; | |
381 | if (channel) | |
382 | config |= 0x08; | |
383 | i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1, | |
384 | config); | |
385 | } | |
386 | } | |
387 | ||
388 | static struct lm90_data *lm90_update_device(struct device *dev) | |
389 | { | |
390 | struct i2c_client *client = to_i2c_client(dev); | |
391 | struct lm90_data *data = i2c_get_clientdata(client); | |
392 | ||
393 | mutex_lock(&data->update_lock); | |
394 | ||
395 | if (time_after(jiffies, data->last_updated + HZ / 2 + HZ / 10) | |
396 | || !data->valid) { | |
397 | u8 h, l; | |
398 | u8 alarms; | |
399 | ||
400 | dev_dbg(&client->dev, "Updating lm90 data.\n"); | |
401 | lm90_read_reg(client, LM90_REG_R_LOCAL_LOW, &data->temp8[0]); | |
402 | lm90_read_reg(client, LM90_REG_R_LOCAL_HIGH, &data->temp8[1]); | |
403 | lm90_read_reg(client, LM90_REG_R_LOCAL_CRIT, &data->temp8[2]); | |
404 | lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT, &data->temp8[3]); | |
405 | lm90_read_reg(client, LM90_REG_R_TCRIT_HYST, &data->temp_hyst); | |
406 | ||
407 | if (data->flags & LM90_HAVE_LOCAL_EXT) { | |
408 | lm90_read16(client, LM90_REG_R_LOCAL_TEMP, | |
409 | MAX6657_REG_R_LOCAL_TEMPL, | |
410 | &data->temp11[4]); | |
411 | } else { | |
412 | if (lm90_read_reg(client, LM90_REG_R_LOCAL_TEMP, | |
413 | &h) == 0) | |
414 | data->temp11[4] = h << 8; | |
415 | } | |
416 | lm90_read16(client, LM90_REG_R_REMOTE_TEMPH, | |
417 | LM90_REG_R_REMOTE_TEMPL, &data->temp11[0]); | |
418 | ||
419 | if (lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH, &h) == 0) { | |
420 | data->temp11[1] = h << 8; | |
421 | if ((data->flags & LM90_HAVE_REM_LIMIT_EXT) | |
422 | && lm90_read_reg(client, LM90_REG_R_REMOTE_LOWL, | |
423 | &l) == 0) | |
424 | data->temp11[1] |= l; | |
425 | } | |
426 | if (lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHH, &h) == 0) { | |
427 | data->temp11[2] = h << 8; | |
428 | if ((data->flags & LM90_HAVE_REM_LIMIT_EXT) | |
429 | && lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHL, | |
430 | &l) == 0) | |
431 | data->temp11[2] |= l; | |
432 | } | |
433 | ||
434 | if (data->flags & LM90_HAVE_OFFSET) { | |
435 | if (lm90_read_reg(client, LM90_REG_R_REMOTE_OFFSH, | |
436 | &h) == 0 | |
437 | && lm90_read_reg(client, LM90_REG_R_REMOTE_OFFSL, | |
438 | &l) == 0) | |
439 | data->temp11[3] = (h << 8) | l; | |
440 | } | |
441 | if (data->flags & LM90_HAVE_EMERGENCY) { | |
442 | lm90_read_reg(client, MAX6659_REG_R_LOCAL_EMERG, | |
443 | &data->temp8[4]); | |
444 | lm90_read_reg(client, MAX6659_REG_R_REMOTE_EMERG, | |
445 | &data->temp8[5]); | |
446 | } | |
447 | lm90_read_reg(client, LM90_REG_R_STATUS, &alarms); | |
448 | data->alarms = alarms; /* save as 16 bit value */ | |
449 | ||
450 | if (data->kind == max6696) { | |
451 | lm90_select_remote_channel(client, data, 1); | |
452 | lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT, | |
453 | &data->temp8[6]); | |
454 | lm90_read_reg(client, MAX6659_REG_R_REMOTE_EMERG, | |
455 | &data->temp8[7]); | |
456 | lm90_read16(client, LM90_REG_R_REMOTE_TEMPH, | |
457 | LM90_REG_R_REMOTE_TEMPL, &data->temp11[5]); | |
458 | if (!lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH, &h)) | |
459 | data->temp11[6] = h << 8; | |
460 | if (!lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHH, &h)) | |
461 | data->temp11[7] = h << 8; | |
462 | lm90_select_remote_channel(client, data, 0); | |
463 | ||
464 | if (!lm90_read_reg(client, MAX6696_REG_R_STATUS2, | |
465 | &alarms)) | |
466 | data->alarms |= alarms << 8; | |
467 | } | |
468 | ||
469 | /* Re-enable ALERT# output if it was originally enabled and | |
470 | * relevant alarms are all clear */ | |
471 | if ((data->config_orig & 0x80) == 0 | |
472 | && (data->alarms & data->alert_alarms) == 0) { | |
473 | u8 config; | |
474 | ||
475 | lm90_read_reg(client, LM90_REG_R_CONFIG1, &config); | |
476 | if (config & 0x80) { | |
477 | dev_dbg(&client->dev, "Re-enabling ALERT#\n"); | |
478 | i2c_smbus_write_byte_data(client, | |
479 | LM90_REG_W_CONFIG1, | |
480 | config & ~0x80); | |
481 | } | |
482 | } | |
483 | ||
484 | data->last_updated = jiffies; | |
485 | data->valid = 1; | |
486 | } | |
487 | ||
488 | mutex_unlock(&data->update_lock); | |
489 | ||
490 | return data; | |
491 | } | |
492 | ||
cea50fe2 NC |
493 | /* |
494 | * Conversions | |
495 | * For local temperatures and limits, critical limits and the hysteresis | |
496 | * value, the LM90 uses signed 8-bit values with LSB = 1 degree Celsius. | |
497 | * For remote temperatures and limits, it uses signed 11-bit values with | |
271dabf5 BH |
498 | * LSB = 0.125 degree Celsius, left-justified in 16-bit registers. Some |
499 | * Maxim chips use unsigned values. | |
cea50fe2 NC |
500 | */ |
501 | ||
9d4d3834 | 502 | static inline int temp_from_s8(s8 val) |
cea50fe2 NC |
503 | { |
504 | return val * 1000; | |
505 | } | |
506 | ||
271dabf5 BH |
507 | static inline int temp_from_u8(u8 val) |
508 | { | |
509 | return val * 1000; | |
510 | } | |
511 | ||
9d4d3834 | 512 | static inline int temp_from_s16(s16 val) |
cea50fe2 NC |
513 | { |
514 | return val / 32 * 125; | |
515 | } | |
516 | ||
271dabf5 BH |
517 | static inline int temp_from_u16(u16 val) |
518 | { | |
519 | return val / 32 * 125; | |
520 | } | |
521 | ||
9d4d3834 | 522 | static s8 temp_to_s8(long val) |
cea50fe2 NC |
523 | { |
524 | if (val <= -128000) | |
525 | return -128; | |
526 | if (val >= 127000) | |
527 | return 127; | |
528 | if (val < 0) | |
529 | return (val - 500) / 1000; | |
530 | return (val + 500) / 1000; | |
531 | } | |
532 | ||
271dabf5 BH |
533 | static u8 temp_to_u8(long val) |
534 | { | |
535 | if (val <= 0) | |
536 | return 0; | |
537 | if (val >= 255000) | |
538 | return 255; | |
539 | return (val + 500) / 1000; | |
540 | } | |
541 | ||
9d4d3834 | 542 | static s16 temp_to_s16(long val) |
cea50fe2 NC |
543 | { |
544 | if (val <= -128000) | |
545 | return 0x8000; | |
546 | if (val >= 127875) | |
547 | return 0x7FE0; | |
548 | if (val < 0) | |
549 | return (val - 62) / 125 * 32; | |
550 | return (val + 62) / 125 * 32; | |
551 | } | |
552 | ||
553 | static u8 hyst_to_reg(long val) | |
554 | { | |
555 | if (val <= 0) | |
556 | return 0; | |
557 | if (val >= 30500) | |
558 | return 31; | |
559 | return (val + 500) / 1000; | |
560 | } | |
561 | ||
562 | /* | |
23b2d477 NC |
563 | * ADT7461 in compatibility mode is almost identical to LM90 except that |
564 | * attempts to write values that are outside the range 0 < temp < 127 are | |
565 | * treated as the boundary value. | |
566 | * | |
567 | * ADT7461 in "extended mode" operation uses unsigned integers offset by | |
568 | * 64 (e.g., 0 -> -64 degC). The range is restricted to -64..191 degC. | |
cea50fe2 | 569 | */ |
9d4d3834 | 570 | static inline int temp_from_u8_adt7461(struct lm90_data *data, u8 val) |
cea50fe2 | 571 | { |
23b2d477 NC |
572 | if (data->flags & LM90_FLAG_ADT7461_EXT) |
573 | return (val - 64) * 1000; | |
574 | else | |
9d4d3834 | 575 | return temp_from_s8(val); |
cea50fe2 NC |
576 | } |
577 | ||
9d4d3834 | 578 | static inline int temp_from_u16_adt7461(struct lm90_data *data, u16 val) |
cea50fe2 | 579 | { |
23b2d477 NC |
580 | if (data->flags & LM90_FLAG_ADT7461_EXT) |
581 | return (val - 0x4000) / 64 * 250; | |
582 | else | |
9d4d3834 | 583 | return temp_from_s16(val); |
23b2d477 NC |
584 | } |
585 | ||
9d4d3834 | 586 | static u8 temp_to_u8_adt7461(struct lm90_data *data, long val) |
23b2d477 NC |
587 | { |
588 | if (data->flags & LM90_FLAG_ADT7461_EXT) { | |
589 | if (val <= -64000) | |
590 | return 0; | |
591 | if (val >= 191000) | |
592 | return 0xFF; | |
593 | return (val + 500 + 64000) / 1000; | |
594 | } else { | |
595 | if (val <= 0) | |
596 | return 0; | |
597 | if (val >= 127000) | |
598 | return 127; | |
599 | return (val + 500) / 1000; | |
600 | } | |
601 | } | |
602 | ||
9d4d3834 | 603 | static u16 temp_to_u16_adt7461(struct lm90_data *data, long val) |
23b2d477 NC |
604 | { |
605 | if (data->flags & LM90_FLAG_ADT7461_EXT) { | |
606 | if (val <= -64000) | |
607 | return 0; | |
608 | if (val >= 191750) | |
609 | return 0xFFC0; | |
610 | return (val + 64000 + 125) / 250 * 64; | |
611 | } else { | |
612 | if (val <= 0) | |
613 | return 0; | |
614 | if (val >= 127750) | |
615 | return 0x7FC0; | |
616 | return (val + 125) / 250 * 64; | |
617 | } | |
cea50fe2 NC |
618 | } |
619 | ||
1da177e4 LT |
620 | /* |
621 | * Sysfs stuff | |
622 | */ | |
623 | ||
30d7394b JD |
624 | static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr, |
625 | char *buf) | |
626 | { | |
627 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
628 | struct lm90_data *data = lm90_update_device(dev); | |
23b2d477 NC |
629 | int temp; |
630 | ||
631 | if (data->kind == adt7461) | |
9d4d3834 | 632 | temp = temp_from_u8_adt7461(data, data->temp8[attr->index]); |
271dabf5 BH |
633 | else if (data->kind == max6646) |
634 | temp = temp_from_u8(data->temp8[attr->index]); | |
23b2d477 | 635 | else |
9d4d3834 | 636 | temp = temp_from_s8(data->temp8[attr->index]); |
23b2d477 | 637 | |
97ae60bb JD |
638 | /* +16 degrees offset for temp2 for the LM99 */ |
639 | if (data->kind == lm99 && attr->index == 3) | |
640 | temp += 16000; | |
641 | ||
23b2d477 | 642 | return sprintf(buf, "%d\n", temp); |
30d7394b JD |
643 | } |
644 | ||
645 | static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr, | |
646 | const char *buf, size_t count) | |
647 | { | |
06e1c0a2 | 648 | static const u8 reg[8] = { |
30d7394b JD |
649 | LM90_REG_W_LOCAL_LOW, |
650 | LM90_REG_W_LOCAL_HIGH, | |
651 | LM90_REG_W_LOCAL_CRIT, | |
652 | LM90_REG_W_REMOTE_CRIT, | |
6948708d GR |
653 | MAX6659_REG_W_LOCAL_EMERG, |
654 | MAX6659_REG_W_REMOTE_EMERG, | |
06e1c0a2 GR |
655 | LM90_REG_W_REMOTE_CRIT, |
656 | MAX6659_REG_W_REMOTE_EMERG, | |
30d7394b JD |
657 | }; |
658 | ||
659 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
660 | struct i2c_client *client = to_i2c_client(dev); | |
661 | struct lm90_data *data = i2c_get_clientdata(client); | |
30d7394b | 662 | int nr = attr->index; |
11e57812 GR |
663 | long val; |
664 | int err; | |
665 | ||
666 | err = strict_strtol(buf, 10, &val); | |
667 | if (err < 0) | |
668 | return err; | |
30d7394b | 669 | |
97ae60bb JD |
670 | /* +16 degrees offset for temp2 for the LM99 */ |
671 | if (data->kind == lm99 && attr->index == 3) | |
672 | val -= 16000; | |
673 | ||
9a61bf63 | 674 | mutex_lock(&data->update_lock); |
30d7394b | 675 | if (data->kind == adt7461) |
9d4d3834 | 676 | data->temp8[nr] = temp_to_u8_adt7461(data, val); |
271dabf5 BH |
677 | else if (data->kind == max6646) |
678 | data->temp8[nr] = temp_to_u8(val); | |
30d7394b | 679 | else |
9d4d3834 | 680 | data->temp8[nr] = temp_to_s8(val); |
06e1c0a2 GR |
681 | |
682 | lm90_select_remote_channel(client, data, nr >= 6); | |
f65e1708 | 683 | i2c_smbus_write_byte_data(client, reg[nr], data->temp8[nr]); |
06e1c0a2 GR |
684 | lm90_select_remote_channel(client, data, 0); |
685 | ||
9a61bf63 | 686 | mutex_unlock(&data->update_lock); |
30d7394b | 687 | return count; |
1da177e4 | 688 | } |
30d7394b JD |
689 | |
690 | static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, | |
691 | char *buf) | |
692 | { | |
96512861 | 693 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
30d7394b | 694 | struct lm90_data *data = lm90_update_device(dev); |
23b2d477 NC |
695 | int temp; |
696 | ||
697 | if (data->kind == adt7461) | |
9d4d3834 | 698 | temp = temp_from_u16_adt7461(data, data->temp11[attr->index]); |
271dabf5 BH |
699 | else if (data->kind == max6646) |
700 | temp = temp_from_u16(data->temp11[attr->index]); | |
23b2d477 | 701 | else |
9d4d3834 | 702 | temp = temp_from_s16(data->temp11[attr->index]); |
23b2d477 | 703 | |
97ae60bb JD |
704 | /* +16 degrees offset for temp2 for the LM99 */ |
705 | if (data->kind == lm99 && attr->index <= 2) | |
706 | temp += 16000; | |
707 | ||
23b2d477 | 708 | return sprintf(buf, "%d\n", temp); |
1da177e4 | 709 | } |
30d7394b JD |
710 | |
711 | static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, | |
712 | const char *buf, size_t count) | |
713 | { | |
96512861 GR |
714 | struct { |
715 | u8 high; | |
716 | u8 low; | |
06e1c0a2 GR |
717 | int channel; |
718 | } reg[5] = { | |
719 | { LM90_REG_W_REMOTE_LOWH, LM90_REG_W_REMOTE_LOWL, 0 }, | |
720 | { LM90_REG_W_REMOTE_HIGHH, LM90_REG_W_REMOTE_HIGHL, 0 }, | |
721 | { LM90_REG_W_REMOTE_OFFSH, LM90_REG_W_REMOTE_OFFSL, 0 }, | |
722 | { LM90_REG_W_REMOTE_LOWH, LM90_REG_W_REMOTE_LOWL, 1 }, | |
723 | { LM90_REG_W_REMOTE_HIGHH, LM90_REG_W_REMOTE_HIGHL, 1 } | |
30d7394b JD |
724 | }; |
725 | ||
96512861 | 726 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
30d7394b JD |
727 | struct i2c_client *client = to_i2c_client(dev); |
728 | struct lm90_data *data = i2c_get_clientdata(client); | |
96512861 GR |
729 | int nr = attr->nr; |
730 | int index = attr->index; | |
11e57812 GR |
731 | long val; |
732 | int err; | |
733 | ||
734 | err = strict_strtol(buf, 10, &val); | |
735 | if (err < 0) | |
736 | return err; | |
30d7394b | 737 | |
97ae60bb | 738 | /* +16 degrees offset for temp2 for the LM99 */ |
96512861 | 739 | if (data->kind == lm99 && index <= 2) |
97ae60bb JD |
740 | val -= 16000; |
741 | ||
9a61bf63 | 742 | mutex_lock(&data->update_lock); |
30d7394b | 743 | if (data->kind == adt7461) |
96512861 | 744 | data->temp11[index] = temp_to_u16_adt7461(data, val); |
271dabf5 | 745 | else if (data->kind == max6646) |
96512861 | 746 | data->temp11[index] = temp_to_u8(val) << 8; |
88073bb1 | 747 | else if (data->flags & LM90_HAVE_REM_LIMIT_EXT) |
96512861 | 748 | data->temp11[index] = temp_to_s16(val); |
88073bb1 | 749 | else |
96512861 | 750 | data->temp11[index] = temp_to_s8(val) << 8; |
5f502a83 | 751 | |
06e1c0a2 | 752 | lm90_select_remote_channel(client, data, reg[nr].channel); |
96512861 GR |
753 | i2c_smbus_write_byte_data(client, reg[nr].high, |
754 | data->temp11[index] >> 8); | |
88073bb1 | 755 | if (data->flags & LM90_HAVE_REM_LIMIT_EXT) |
96512861 GR |
756 | i2c_smbus_write_byte_data(client, reg[nr].low, |
757 | data->temp11[index] & 0xff); | |
06e1c0a2 GR |
758 | lm90_select_remote_channel(client, data, 0); |
759 | ||
9a61bf63 | 760 | mutex_unlock(&data->update_lock); |
30d7394b | 761 | return count; |
1da177e4 | 762 | } |
30d7394b | 763 | |
11e57812 GR |
764 | static ssize_t show_temphyst(struct device *dev, |
765 | struct device_attribute *devattr, | |
30d7394b JD |
766 | char *buf) |
767 | { | |
768 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
769 | struct lm90_data *data = lm90_update_device(dev); | |
23b2d477 NC |
770 | int temp; |
771 | ||
772 | if (data->kind == adt7461) | |
9d4d3834 | 773 | temp = temp_from_u8_adt7461(data, data->temp8[attr->index]); |
ec38fa2b JD |
774 | else if (data->kind == max6646) |
775 | temp = temp_from_u8(data->temp8[attr->index]); | |
23b2d477 | 776 | else |
9d4d3834 | 777 | temp = temp_from_s8(data->temp8[attr->index]); |
23b2d477 | 778 | |
97ae60bb JD |
779 | /* +16 degrees offset for temp2 for the LM99 */ |
780 | if (data->kind == lm99 && attr->index == 3) | |
781 | temp += 16000; | |
782 | ||
9d4d3834 | 783 | return sprintf(buf, "%d\n", temp - temp_from_s8(data->temp_hyst)); |
1da177e4 | 784 | } |
1da177e4 | 785 | |
30d7394b JD |
786 | static ssize_t set_temphyst(struct device *dev, struct device_attribute *dummy, |
787 | const char *buf, size_t count) | |
1da177e4 LT |
788 | { |
789 | struct i2c_client *client = to_i2c_client(dev); | |
790 | struct lm90_data *data = i2c_get_clientdata(client); | |
11e57812 GR |
791 | long val; |
792 | int err; | |
ec38fa2b | 793 | int temp; |
1da177e4 | 794 | |
11e57812 GR |
795 | err = strict_strtol(buf, 10, &val); |
796 | if (err < 0) | |
797 | return err; | |
798 | ||
9a61bf63 | 799 | mutex_lock(&data->update_lock); |
ec38fa2b JD |
800 | if (data->kind == adt7461) |
801 | temp = temp_from_u8_adt7461(data, data->temp8[2]); | |
802 | else if (data->kind == max6646) | |
803 | temp = temp_from_u8(data->temp8[2]); | |
804 | else | |
805 | temp = temp_from_s8(data->temp8[2]); | |
806 | ||
807 | data->temp_hyst = hyst_to_reg(temp - val); | |
1da177e4 | 808 | i2c_smbus_write_byte_data(client, LM90_REG_W_TCRIT_HYST, |
ec38fa2b | 809 | data->temp_hyst); |
9a61bf63 | 810 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
811 | return count; |
812 | } | |
813 | ||
30d7394b JD |
814 | static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy, |
815 | char *buf) | |
1da177e4 LT |
816 | { |
817 | struct lm90_data *data = lm90_update_device(dev); | |
818 | return sprintf(buf, "%d\n", data->alarms); | |
819 | } | |
820 | ||
2d45771e JD |
821 | static ssize_t show_alarm(struct device *dev, struct device_attribute |
822 | *devattr, char *buf) | |
823 | { | |
824 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
825 | struct lm90_data *data = lm90_update_device(dev); | |
826 | int bitnr = attr->index; | |
827 | ||
828 | return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1); | |
829 | } | |
830 | ||
96512861 GR |
831 | static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp11, NULL, 0, 4); |
832 | static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp11, NULL, 0, 0); | |
30d7394b | 833 | static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp8, |
f65e1708 | 834 | set_temp8, 0); |
96512861 GR |
835 | static SENSOR_DEVICE_ATTR_2(temp2_min, S_IWUSR | S_IRUGO, show_temp11, |
836 | set_temp11, 0, 1); | |
30d7394b | 837 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8, |
f65e1708 | 838 | set_temp8, 1); |
96512861 GR |
839 | static SENSOR_DEVICE_ATTR_2(temp2_max, S_IWUSR | S_IRUGO, show_temp11, |
840 | set_temp11, 1, 2); | |
30d7394b | 841 | static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp8, |
f65e1708 | 842 | set_temp8, 2); |
30d7394b | 843 | static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp8, |
f65e1708 | 844 | set_temp8, 3); |
30d7394b | 845 | static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temphyst, |
f65e1708 JD |
846 | set_temphyst, 2); |
847 | static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temphyst, NULL, 3); | |
96512861 GR |
848 | static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IWUSR | S_IRUGO, show_temp11, |
849 | set_temp11, 2, 3); | |
2d45771e JD |
850 | |
851 | /* Individual alarm files */ | |
852 | static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 0); | |
853 | static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1); | |
7817a39e | 854 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2); |
2d45771e JD |
855 | static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3); |
856 | static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4); | |
857 | static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, show_alarm, NULL, 5); | |
858 | static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6); | |
859 | /* Raw alarm file for compatibility */ | |
1da177e4 LT |
860 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
861 | ||
0e39e01c JD |
862 | static struct attribute *lm90_attributes[] = { |
863 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
864 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
865 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
866 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
867 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
868 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
869 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
870 | &sensor_dev_attr_temp2_crit.dev_attr.attr, | |
871 | &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, | |
872 | &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr, | |
873 | ||
874 | &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, | |
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_min_alarm.dev_attr.attr, | |
880 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, | |
881 | &dev_attr_alarms.attr, | |
882 | NULL | |
883 | }; | |
884 | ||
885 | static const struct attribute_group lm90_group = { | |
886 | .attrs = lm90_attributes, | |
887 | }; | |
888 | ||
6948708d GR |
889 | /* |
890 | * Additional attributes for devices with emergency sensors | |
891 | */ | |
892 | static SENSOR_DEVICE_ATTR(temp1_emergency, S_IWUSR | S_IRUGO, show_temp8, | |
893 | set_temp8, 4); | |
894 | static SENSOR_DEVICE_ATTR(temp2_emergency, S_IWUSR | S_IRUGO, show_temp8, | |
895 | set_temp8, 5); | |
896 | static SENSOR_DEVICE_ATTR(temp1_emergency_hyst, S_IRUGO, show_temphyst, | |
897 | NULL, 4); | |
898 | static SENSOR_DEVICE_ATTR(temp2_emergency_hyst, S_IRUGO, show_temphyst, | |
899 | NULL, 5); | |
900 | ||
901 | static struct attribute *lm90_emergency_attributes[] = { | |
902 | &sensor_dev_attr_temp1_emergency.dev_attr.attr, | |
903 | &sensor_dev_attr_temp2_emergency.dev_attr.attr, | |
904 | &sensor_dev_attr_temp1_emergency_hyst.dev_attr.attr, | |
905 | &sensor_dev_attr_temp2_emergency_hyst.dev_attr.attr, | |
906 | NULL | |
907 | }; | |
908 | ||
909 | static const struct attribute_group lm90_emergency_group = { | |
910 | .attrs = lm90_emergency_attributes, | |
911 | }; | |
912 | ||
06e1c0a2 GR |
913 | static SENSOR_DEVICE_ATTR(temp1_emergency_alarm, S_IRUGO, show_alarm, NULL, 15); |
914 | static SENSOR_DEVICE_ATTR(temp2_emergency_alarm, S_IRUGO, show_alarm, NULL, 13); | |
915 | ||
916 | static struct attribute *lm90_emergency_alarm_attributes[] = { | |
917 | &sensor_dev_attr_temp1_emergency_alarm.dev_attr.attr, | |
918 | &sensor_dev_attr_temp2_emergency_alarm.dev_attr.attr, | |
919 | NULL | |
920 | }; | |
921 | ||
922 | static const struct attribute_group lm90_emergency_alarm_group = { | |
923 | .attrs = lm90_emergency_alarm_attributes, | |
924 | }; | |
925 | ||
926 | /* | |
927 | * Additional attributes for devices with 3 temperature sensors | |
928 | */ | |
929 | static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp11, NULL, 0, 5); | |
930 | static SENSOR_DEVICE_ATTR_2(temp3_min, S_IWUSR | S_IRUGO, show_temp11, | |
931 | set_temp11, 3, 6); | |
932 | static SENSOR_DEVICE_ATTR_2(temp3_max, S_IWUSR | S_IRUGO, show_temp11, | |
933 | set_temp11, 4, 7); | |
934 | static SENSOR_DEVICE_ATTR(temp3_crit, S_IWUSR | S_IRUGO, show_temp8, | |
935 | set_temp8, 6); | |
936 | static SENSOR_DEVICE_ATTR(temp3_crit_hyst, S_IRUGO, show_temphyst, NULL, 6); | |
937 | static SENSOR_DEVICE_ATTR(temp3_emergency, S_IWUSR | S_IRUGO, show_temp8, | |
938 | set_temp8, 7); | |
939 | static SENSOR_DEVICE_ATTR(temp3_emergency_hyst, S_IRUGO, show_temphyst, | |
940 | NULL, 7); | |
941 | ||
942 | static SENSOR_DEVICE_ATTR(temp3_crit_alarm, S_IRUGO, show_alarm, NULL, 9); | |
943 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 10); | |
944 | static SENSOR_DEVICE_ATTR(temp3_min_alarm, S_IRUGO, show_alarm, NULL, 11); | |
945 | static SENSOR_DEVICE_ATTR(temp3_max_alarm, S_IRUGO, show_alarm, NULL, 12); | |
946 | static SENSOR_DEVICE_ATTR(temp3_emergency_alarm, S_IRUGO, show_alarm, NULL, 14); | |
947 | ||
948 | static struct attribute *lm90_temp3_attributes[] = { | |
949 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
950 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
951 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
952 | &sensor_dev_attr_temp3_crit.dev_attr.attr, | |
953 | &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr, | |
954 | &sensor_dev_attr_temp3_emergency.dev_attr.attr, | |
955 | &sensor_dev_attr_temp3_emergency_hyst.dev_attr.attr, | |
956 | ||
957 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
958 | &sensor_dev_attr_temp3_min_alarm.dev_attr.attr, | |
959 | &sensor_dev_attr_temp3_max_alarm.dev_attr.attr, | |
960 | &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr, | |
961 | &sensor_dev_attr_temp3_emergency_alarm.dev_attr.attr, | |
962 | NULL | |
963 | }; | |
964 | ||
965 | static const struct attribute_group lm90_temp3_group = { | |
966 | .attrs = lm90_temp3_attributes, | |
967 | }; | |
968 | ||
c3df5806 JD |
969 | /* pec used for ADM1032 only */ |
970 | static ssize_t show_pec(struct device *dev, struct device_attribute *dummy, | |
971 | char *buf) | |
972 | { | |
973 | struct i2c_client *client = to_i2c_client(dev); | |
974 | return sprintf(buf, "%d\n", !!(client->flags & I2C_CLIENT_PEC)); | |
975 | } | |
976 | ||
977 | static ssize_t set_pec(struct device *dev, struct device_attribute *dummy, | |
978 | const char *buf, size_t count) | |
979 | { | |
980 | struct i2c_client *client = to_i2c_client(dev); | |
11e57812 GR |
981 | long val; |
982 | int err; | |
983 | ||
984 | err = strict_strtol(buf, 10, &val); | |
985 | if (err < 0) | |
986 | return err; | |
c3df5806 JD |
987 | |
988 | switch (val) { | |
989 | case 0: | |
990 | client->flags &= ~I2C_CLIENT_PEC; | |
991 | break; | |
992 | case 1: | |
993 | client->flags |= I2C_CLIENT_PEC; | |
994 | break; | |
995 | default: | |
996 | return -EINVAL; | |
997 | } | |
998 | ||
999 | return count; | |
1000 | } | |
1001 | ||
1002 | static DEVICE_ATTR(pec, S_IWUSR | S_IRUGO, show_pec, set_pec); | |
1003 | ||
1da177e4 LT |
1004 | /* |
1005 | * Real code | |
1006 | */ | |
1007 | ||
15b66ab6 GR |
1008 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
1009 | static int lm90_detect(struct i2c_client *new_client, | |
1010 | struct i2c_board_info *info) | |
8256fe0f | 1011 | { |
15b66ab6 GR |
1012 | struct i2c_adapter *adapter = new_client->adapter; |
1013 | int address = new_client->addr; | |
1014 | const char *name = NULL; | |
1015 | int man_id, chip_id, reg_config1, reg_convrate; | |
8256fe0f | 1016 | |
15b66ab6 GR |
1017 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
1018 | return -ENODEV; | |
1da177e4 | 1019 | |
8f2fa77c JD |
1020 | /* detection and identification */ |
1021 | if ((man_id = i2c_smbus_read_byte_data(new_client, | |
e0ae87a4 | 1022 | LM90_REG_R_MAN_ID)) < 0 |
8f2fa77c | 1023 | || (chip_id = i2c_smbus_read_byte_data(new_client, |
e0ae87a4 | 1024 | LM90_REG_R_CHIP_ID)) < 0 |
8f2fa77c | 1025 | || (reg_config1 = i2c_smbus_read_byte_data(new_client, |
e0ae87a4 | 1026 | LM90_REG_R_CONFIG1)) < 0 |
8f2fa77c | 1027 | || (reg_convrate = i2c_smbus_read_byte_data(new_client, |
e0ae87a4 | 1028 | LM90_REG_R_CONVRATE)) < 0) |
8f2fa77c JD |
1029 | return -ENODEV; |
1030 | ||
1031 | if ((address == 0x4C || address == 0x4D) | |
1032 | && man_id == 0x01) { /* National Semiconductor */ | |
1033 | int reg_config2; | |
1034 | ||
1035 | reg_config2 = i2c_smbus_read_byte_data(new_client, | |
1036 | LM90_REG_R_CONFIG2); | |
1037 | if (reg_config2 < 0) | |
9b0e8526 | 1038 | return -ENODEV; |
8f2fa77c JD |
1039 | |
1040 | if ((reg_config1 & 0x2A) == 0x00 | |
1041 | && (reg_config2 & 0xF8) == 0x00 | |
1042 | && reg_convrate <= 0x09) { | |
1043 | if (address == 0x4C | |
1044 | && (chip_id & 0xF0) == 0x20) { /* LM90 */ | |
1045 | name = "lm90"; | |
32c82a93 | 1046 | } else |
8f2fa77c JD |
1047 | if ((chip_id & 0xF0) == 0x30) { /* LM89/LM99 */ |
1048 | name = "lm99"; | |
1049 | dev_info(&adapter->dev, | |
1050 | "Assuming LM99 chip at 0x%02x\n", | |
1051 | address); | |
1052 | dev_info(&adapter->dev, | |
1053 | "If it is an LM89, instantiate it " | |
1054 | "with the new_device sysfs " | |
1055 | "interface\n"); | |
271dabf5 | 1056 | } else |
8f2fa77c JD |
1057 | if (address == 0x4C |
1058 | && (chip_id & 0xF0) == 0x10) { /* LM86 */ | |
1059 | name = "lm86"; | |
1da177e4 LT |
1060 | } |
1061 | } | |
8f2fa77c JD |
1062 | } else |
1063 | if ((address == 0x4C || address == 0x4D) | |
1064 | && man_id == 0x41) { /* Analog Devices */ | |
1065 | if ((chip_id & 0xF0) == 0x40 /* ADM1032 */ | |
1066 | && (reg_config1 & 0x3F) == 0x00 | |
1067 | && reg_convrate <= 0x0A) { | |
1068 | name = "adm1032"; | |
1069 | /* The ADM1032 supports PEC, but only if combined | |
1070 | transactions are not used. */ | |
1071 | if (i2c_check_functionality(adapter, | |
1072 | I2C_FUNC_SMBUS_BYTE)) | |
1073 | info->flags |= I2C_CLIENT_PEC; | |
1074 | } else | |
1075 | if (chip_id == 0x51 /* ADT7461 */ | |
1076 | && (reg_config1 & 0x1B) == 0x00 | |
1077 | && reg_convrate <= 0x0A) { | |
1078 | name = "adt7461"; | |
1079 | } | |
1080 | } else | |
1081 | if (man_id == 0x4D) { /* Maxim */ | |
06e1c0a2 GR |
1082 | int reg_emerg, reg_emerg2, reg_status2; |
1083 | ||
1084 | /* | |
1085 | * We read MAX6659_REG_R_REMOTE_EMERG twice, and re-read | |
1086 | * LM90_REG_R_MAN_ID in between. If MAX6659_REG_R_REMOTE_EMERG | |
1087 | * exists, both readings will reflect the same value. Otherwise, | |
1088 | * the readings will be different. | |
1089 | */ | |
1090 | if ((reg_emerg = i2c_smbus_read_byte_data(new_client, | |
1091 | MAX6659_REG_R_REMOTE_EMERG)) < 0 | |
1092 | || i2c_smbus_read_byte_data(new_client, LM90_REG_R_MAN_ID) < 0 | |
1093 | || (reg_emerg2 = i2c_smbus_read_byte_data(new_client, | |
1094 | MAX6659_REG_R_REMOTE_EMERG)) < 0 | |
1095 | || (reg_status2 = i2c_smbus_read_byte_data(new_client, | |
1096 | MAX6696_REG_R_STATUS2)) < 0) | |
1097 | return -ENODEV; | |
1098 | ||
8f2fa77c JD |
1099 | /* |
1100 | * The MAX6657, MAX6658 and MAX6659 do NOT have a chip_id | |
1101 | * register. Reading from that address will return the last | |
1102 | * read value, which in our case is those of the man_id | |
1103 | * register. Likewise, the config1 register seems to lack a | |
1104 | * low nibble, so the value will be those of the previous | |
1105 | * read, so in our case those of the man_id register. | |
13c84951 GR |
1106 | * MAX6659 has a third set of upper temperature limit registers. |
1107 | * Those registers also return values on MAX6657 and MAX6658, | |
1108 | * thus the only way to detect MAX6659 is by its address. | |
1109 | * For this reason it will be mis-detected as MAX6657 if its | |
1110 | * address is 0x4C. | |
8f2fa77c JD |
1111 | */ |
1112 | if (chip_id == man_id | |
13c84951 | 1113 | && (address == 0x4C || address == 0x4D || address == 0x4E) |
8f2fa77c JD |
1114 | && (reg_config1 & 0x1F) == (man_id & 0x0F) |
1115 | && reg_convrate <= 0x09) { | |
13c84951 GR |
1116 | if (address == 0x4C) |
1117 | name = "max6657"; | |
1118 | else | |
1119 | name = "max6659"; | |
8f2fa77c | 1120 | } else |
06e1c0a2 GR |
1121 | /* |
1122 | * Even though MAX6695 and MAX6696 do not have a chip ID | |
1123 | * register, reading it returns 0x01. Bit 4 of the config1 | |
1124 | * register is unused and should return zero when read. Bit 0 of | |
1125 | * the status2 register is unused and should return zero when | |
1126 | * read. | |
1127 | * | |
1128 | * MAX6695 and MAX6696 have an additional set of temperature | |
1129 | * limit registers. We can detect those chips by checking if | |
1130 | * one of those registers exists. | |
1131 | */ | |
1132 | if (chip_id == 0x01 | |
1133 | && (reg_config1 & 0x10) == 0x00 | |
1134 | && (reg_status2 & 0x01) == 0x00 | |
1135 | && reg_emerg == reg_emerg2 | |
1136 | && reg_convrate <= 0x07) { | |
1137 | name = "max6696"; | |
1138 | } else | |
8f2fa77c JD |
1139 | /* |
1140 | * The chip_id register of the MAX6680 and MAX6681 holds the | |
1141 | * revision of the chip. The lowest bit of the config1 register | |
1142 | * is unused and should return zero when read, so should the | |
1143 | * second to last bit of config1 (software reset). | |
1144 | */ | |
1145 | if (chip_id == 0x01 | |
1146 | && (reg_config1 & 0x03) == 0x00 | |
1147 | && reg_convrate <= 0x07) { | |
1148 | name = "max6680"; | |
1149 | } else | |
1150 | /* | |
1151 | * The chip_id register of the MAX6646/6647/6649 holds the | |
1152 | * revision of the chip. The lowest 6 bits of the config1 | |
1153 | * register are unused and should return zero when read. | |
1154 | */ | |
1155 | if (chip_id == 0x59 | |
1156 | && (reg_config1 & 0x3f) == 0x00 | |
1157 | && reg_convrate <= 0x07) { | |
1158 | name = "max6646"; | |
1da177e4 | 1159 | } |
6771ea1f JD |
1160 | } else |
1161 | if (address == 0x4C | |
1162 | && man_id == 0x5C) { /* Winbond/Nuvoton */ | |
1163 | if ((chip_id & 0xFE) == 0x10 /* W83L771AWG/ASG */ | |
1164 | && (reg_config1 & 0x2A) == 0x00 | |
1165 | && reg_convrate <= 0x08) { | |
1166 | name = "w83l771"; | |
1167 | } | |
1da177e4 LT |
1168 | } |
1169 | ||
8f2fa77c JD |
1170 | if (!name) { /* identification failed */ |
1171 | dev_dbg(&adapter->dev, | |
1172 | "Unsupported chip at 0x%02x (man_id=0x%02X, " | |
1173 | "chip_id=0x%02X)\n", address, man_id, chip_id); | |
1174 | return -ENODEV; | |
1da177e4 | 1175 | } |
8f2fa77c | 1176 | |
9b0e8526 JD |
1177 | strlcpy(info->type, name, I2C_NAME_SIZE); |
1178 | ||
1179 | return 0; | |
1180 | } | |
1181 | ||
b6fc1bac GR |
1182 | static void lm90_remove_files(struct i2c_client *client, struct lm90_data *data) |
1183 | { | |
06e1c0a2 GR |
1184 | if (data->flags & LM90_HAVE_TEMP3) |
1185 | sysfs_remove_group(&client->dev.kobj, &lm90_temp3_group); | |
1186 | if (data->flags & LM90_HAVE_EMERGENCY_ALARM) | |
1187 | sysfs_remove_group(&client->dev.kobj, | |
1188 | &lm90_emergency_alarm_group); | |
6948708d GR |
1189 | if (data->flags & LM90_HAVE_EMERGENCY) |
1190 | sysfs_remove_group(&client->dev.kobj, | |
1191 | &lm90_emergency_group); | |
b6fc1bac GR |
1192 | if (data->flags & LM90_HAVE_OFFSET) |
1193 | device_remove_file(&client->dev, | |
1194 | &sensor_dev_attr_temp2_offset.dev_attr); | |
1195 | device_remove_file(&client->dev, &dev_attr_pec); | |
1196 | sysfs_remove_group(&client->dev.kobj, &lm90_group); | |
1197 | } | |
1198 | ||
15b66ab6 GR |
1199 | static void lm90_init_client(struct i2c_client *client) |
1200 | { | |
1201 | u8 config; | |
1202 | struct lm90_data *data = i2c_get_clientdata(client); | |
1203 | ||
1204 | /* | |
1205 | * Start the conversions. | |
1206 | */ | |
1207 | i2c_smbus_write_byte_data(client, LM90_REG_W_CONVRATE, | |
1208 | 5); /* 2 Hz */ | |
1209 | if (lm90_read_reg(client, LM90_REG_R_CONFIG1, &config) < 0) { | |
1210 | dev_warn(&client->dev, "Initialization failed!\n"); | |
1211 | return; | |
1212 | } | |
1213 | data->config_orig = config; | |
1214 | ||
1215 | /* Check Temperature Range Select */ | |
1216 | if (data->kind == adt7461) { | |
1217 | if (config & 0x04) | |
1218 | data->flags |= LM90_FLAG_ADT7461_EXT; | |
1219 | } | |
1220 | ||
1221 | /* | |
1222 | * Put MAX6680/MAX8881 into extended resolution (bit 0x10, | |
1223 | * 0.125 degree resolution) and range (0x08, extend range | |
1224 | * to -64 degree) mode for the remote temperature sensor. | |
1225 | */ | |
1226 | if (data->kind == max6680) | |
1227 | config |= 0x18; | |
1228 | ||
1229 | /* | |
1230 | * Select external channel 0 for max6695/96 | |
1231 | */ | |
1232 | if (data->kind == max6696) | |
1233 | config &= ~0x08; | |
1234 | ||
1235 | config &= 0xBF; /* run */ | |
1236 | if (config != data->config_orig) /* Only write if changed */ | |
1237 | i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1, config); | |
1238 | } | |
1239 | ||
9b0e8526 JD |
1240 | static int lm90_probe(struct i2c_client *new_client, |
1241 | const struct i2c_device_id *id) | |
1242 | { | |
1243 | struct i2c_adapter *adapter = to_i2c_adapter(new_client->dev.parent); | |
1244 | struct lm90_data *data; | |
1245 | int err; | |
1da177e4 | 1246 | |
9b0e8526 JD |
1247 | data = kzalloc(sizeof(struct lm90_data), GFP_KERNEL); |
1248 | if (!data) { | |
1249 | err = -ENOMEM; | |
1250 | goto exit; | |
1251 | } | |
1252 | i2c_set_clientdata(new_client, data); | |
9a61bf63 | 1253 | mutex_init(&data->update_lock); |
1da177e4 | 1254 | |
9b0e8526 JD |
1255 | /* Set the device type */ |
1256 | data->kind = id->driver_data; | |
1257 | if (data->kind == adm1032) { | |
1258 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE)) | |
1259 | new_client->flags &= ~I2C_CLIENT_PEC; | |
1260 | } | |
1da177e4 | 1261 | |
53de3342 JD |
1262 | /* Different devices have different alarm bits triggering the |
1263 | * ALERT# output */ | |
4667bcb8 | 1264 | data->alert_alarms = lm90_params[data->kind].alert_alarms; |
53de3342 | 1265 | |
88073bb1 | 1266 | /* Set chip capabilities */ |
4667bcb8 | 1267 | data->flags = lm90_params[data->kind].flags; |
06e1c0a2 | 1268 | |
1da177e4 LT |
1269 | /* Initialize the LM90 chip */ |
1270 | lm90_init_client(new_client); | |
1271 | ||
1272 | /* Register sysfs hooks */ | |
11e57812 GR |
1273 | err = sysfs_create_group(&new_client->dev.kobj, &lm90_group); |
1274 | if (err) | |
9b0e8526 | 1275 | goto exit_free; |
0e39e01c | 1276 | if (new_client->flags & I2C_CLIENT_PEC) { |
11e57812 GR |
1277 | err = device_create_file(&new_client->dev, &dev_attr_pec); |
1278 | if (err) | |
0e39e01c JD |
1279 | goto exit_remove_files; |
1280 | } | |
88073bb1 | 1281 | if (data->flags & LM90_HAVE_OFFSET) { |
11e57812 GR |
1282 | err = device_create_file(&new_client->dev, |
1283 | &sensor_dev_attr_temp2_offset.dev_attr); | |
1284 | if (err) | |
69f2f96d JD |
1285 | goto exit_remove_files; |
1286 | } | |
6948708d GR |
1287 | if (data->flags & LM90_HAVE_EMERGENCY) { |
1288 | err = sysfs_create_group(&new_client->dev.kobj, | |
1289 | &lm90_emergency_group); | |
1290 | if (err) | |
1291 | goto exit_remove_files; | |
1292 | } | |
06e1c0a2 GR |
1293 | if (data->flags & LM90_HAVE_EMERGENCY_ALARM) { |
1294 | err = sysfs_create_group(&new_client->dev.kobj, | |
1295 | &lm90_emergency_alarm_group); | |
1296 | if (err) | |
1297 | goto exit_remove_files; | |
1298 | } | |
1299 | if (data->flags & LM90_HAVE_TEMP3) { | |
1300 | err = sysfs_create_group(&new_client->dev.kobj, | |
1301 | &lm90_temp3_group); | |
1302 | if (err) | |
1303 | goto exit_remove_files; | |
1304 | } | |
0e39e01c | 1305 | |
1beeffe4 TJ |
1306 | data->hwmon_dev = hwmon_device_register(&new_client->dev); |
1307 | if (IS_ERR(data->hwmon_dev)) { | |
1308 | err = PTR_ERR(data->hwmon_dev); | |
0e39e01c | 1309 | goto exit_remove_files; |
943b0830 MH |
1310 | } |
1311 | ||
1da177e4 LT |
1312 | return 0; |
1313 | ||
0e39e01c | 1314 | exit_remove_files: |
b6fc1bac | 1315 | lm90_remove_files(new_client, data); |
1da177e4 LT |
1316 | exit_free: |
1317 | kfree(data); | |
1318 | exit: | |
1319 | return err; | |
1320 | } | |
1321 | ||
9b0e8526 | 1322 | static int lm90_remove(struct i2c_client *client) |
1da177e4 | 1323 | { |
943b0830 | 1324 | struct lm90_data *data = i2c_get_clientdata(client); |
1da177e4 | 1325 | |
1beeffe4 | 1326 | hwmon_device_unregister(data->hwmon_dev); |
b6fc1bac | 1327 | lm90_remove_files(client, data); |
943b0830 | 1328 | |
95238364 JD |
1329 | /* Restore initial configuration */ |
1330 | i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1, | |
1331 | data->config_orig); | |
1332 | ||
943b0830 | 1333 | kfree(data); |
1da177e4 LT |
1334 | return 0; |
1335 | } | |
1336 | ||
53de3342 JD |
1337 | static void lm90_alert(struct i2c_client *client, unsigned int flag) |
1338 | { | |
1339 | struct lm90_data *data = i2c_get_clientdata(client); | |
06e1c0a2 | 1340 | u8 config, alarms, alarms2 = 0; |
53de3342 JD |
1341 | |
1342 | lm90_read_reg(client, LM90_REG_R_STATUS, &alarms); | |
06e1c0a2 GR |
1343 | |
1344 | if (data->kind == max6696) | |
1345 | lm90_read_reg(client, MAX6696_REG_R_STATUS2, &alarms2); | |
1346 | ||
1347 | if ((alarms & 0x7f) == 0 && (alarms2 & 0xfe) == 0) { | |
53de3342 JD |
1348 | dev_info(&client->dev, "Everything OK\n"); |
1349 | } else { | |
1350 | if (alarms & 0x61) | |
1351 | dev_warn(&client->dev, | |
1352 | "temp%d out of range, please check!\n", 1); | |
1353 | if (alarms & 0x1a) | |
1354 | dev_warn(&client->dev, | |
1355 | "temp%d out of range, please check!\n", 2); | |
1356 | if (alarms & 0x04) | |
1357 | dev_warn(&client->dev, | |
1358 | "temp%d diode open, please check!\n", 2); | |
1359 | ||
06e1c0a2 GR |
1360 | if (alarms2 & 0x18) |
1361 | dev_warn(&client->dev, | |
1362 | "temp%d out of range, please check!\n", 3); | |
1363 | ||
53de3342 JD |
1364 | /* Disable ALERT# output, because these chips don't implement |
1365 | SMBus alert correctly; they should only hold the alert line | |
1366 | low briefly. */ | |
1179324c | 1367 | if ((data->flags & LM90_HAVE_BROKEN_ALERT) |
53de3342 JD |
1368 | && (alarms & data->alert_alarms)) { |
1369 | dev_dbg(&client->dev, "Disabling ALERT#\n"); | |
1370 | lm90_read_reg(client, LM90_REG_R_CONFIG1, &config); | |
1371 | i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1, | |
1372 | config | 0x80); | |
1373 | } | |
1374 | } | |
1375 | } | |
1376 | ||
15b66ab6 GR |
1377 | static struct i2c_driver lm90_driver = { |
1378 | .class = I2C_CLASS_HWMON, | |
1379 | .driver = { | |
1380 | .name = "lm90", | |
1381 | }, | |
1382 | .probe = lm90_probe, | |
1383 | .remove = lm90_remove, | |
1384 | .alert = lm90_alert, | |
1385 | .id_table = lm90_id, | |
1386 | .detect = lm90_detect, | |
1387 | .address_list = normal_i2c, | |
1388 | }; | |
1da177e4 LT |
1389 | |
1390 | static int __init sensors_lm90_init(void) | |
1391 | { | |
1392 | return i2c_add_driver(&lm90_driver); | |
1393 | } | |
1394 | ||
1395 | static void __exit sensors_lm90_exit(void) | |
1396 | { | |
1397 | i2c_del_driver(&lm90_driver); | |
1398 | } | |
1399 | ||
1400 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); | |
1401 | MODULE_DESCRIPTION("LM90/ADM1032 driver"); | |
1402 | MODULE_LICENSE("GPL"); | |
1403 | ||
1404 | module_init(sensors_lm90_init); | |
1405 | module_exit(sensors_lm90_exit); |