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1da177e4 LT |
1 | /* |
2 | * lm87.c | |
3 | * | |
4 | * Copyright (C) 2000 Frodo Looijaard <frodol@dds.nl> | |
5 | * Philip Edelbrock <phil@netroedge.com> | |
6 | * Stephen Rousset <stephen.rousset@rocketlogix.com> | |
7 | * Dan Eaton <dan.eaton@rocketlogix.com> | |
7c81c60f | 8 | * Copyright (C) 2004-2008 Jean Delvare <jdelvare@suse.de> |
1da177e4 LT |
9 | * |
10 | * Original port to Linux 2.6 by Jeff Oliver. | |
11 | * | |
12 | * The LM87 is a sensor chip made by National Semiconductor. It monitors up | |
13 | * to 8 voltages (including its own power source), up to three temperatures | |
14 | * (its own plus up to two external ones) and up to two fans. The default | |
15 | * configuration is 6 voltages, two temperatures and two fans (see below). | |
16 | * Voltages are scaled internally with ratios such that the nominal value of | |
17 | * each voltage correspond to a register value of 192 (which means a | |
18 | * resolution of about 0.5% of the nominal value). Temperature values are | |
19 | * reported with a 1 deg resolution and a 3-4 deg accuracy. Complete | |
20 | * datasheet can be obtained from National's website at: | |
21 | * http://www.national.com/pf/LM/LM87.html | |
22 | * | |
23 | * Some functions share pins, so not all functions are available at the same | |
47064d64 BH |
24 | * time. Which are depends on the hardware setup. This driver normally |
25 | * assumes that firmware configured the chip correctly. Where this is not | |
26 | * the case, platform code must set the I2C client's platform_data to point | |
27 | * to a u8 value to be written to the channel register. | |
1da177e4 LT |
28 | * For reference, here is the list of exclusive functions: |
29 | * - in0+in5 (default) or temp3 | |
30 | * - fan1 (default) or in6 | |
31 | * - fan2 (default) or in7 | |
32 | * - VID lines (default) or IRQ lines (not handled by this driver) | |
33 | * | |
34 | * The LM87 additionally features an analog output, supposedly usable to | |
35 | * control the speed of a fan. All new chips use pulse width modulation | |
36 | * instead. The LM87 is the only hardware monitoring chipset I know of | |
37 | * which uses amplitude modulation. Be careful when using this feature. | |
38 | * | |
c7fa3737 JD |
39 | * This driver also supports the ADM1024, a sensor chip made by Analog |
40 | * Devices. That chip is fully compatible with the LM87. Complete | |
41 | * datasheet can be obtained from Analog's website at: | |
42 | * http://www.analog.com/en/prod/0,2877,ADM1024,00.html | |
43 | * | |
1da177e4 LT |
44 | * This program is free software; you can redistribute it and/or modify |
45 | * it under the terms of the GNU General Public License as published by | |
46 | * the Free Software Foundation; either version 2 of the License, or | |
47 | * (at your option) any later version. | |
48 | * | |
49 | * This program is distributed in the hope that it will be useful, | |
50 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
51 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
52 | * GNU General Public License for more details. | |
53 | * | |
54 | * You should have received a copy of the GNU General Public License | |
55 | * along with this program; if not, write to the Free Software | |
56 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
57 | */ | |
58 | ||
1da177e4 LT |
59 | #include <linux/module.h> |
60 | #include <linux/init.h> | |
61 | #include <linux/slab.h> | |
62 | #include <linux/jiffies.h> | |
63 | #include <linux/i2c.h> | |
943b0830 | 64 | #include <linux/hwmon.h> |
c2803b98 | 65 | #include <linux/hwmon-sysfs.h> |
303760b4 | 66 | #include <linux/hwmon-vid.h> |
943b0830 | 67 | #include <linux/err.h> |
9a61bf63 | 68 | #include <linux/mutex.h> |
1da177e4 LT |
69 | |
70 | /* | |
71 | * Addresses to scan | |
72 | * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e. | |
73 | */ | |
74 | ||
25e9c86d | 75 | static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; |
1da177e4 | 76 | |
e5e9f44c | 77 | enum chips { lm87, adm1024 }; |
1da177e4 LT |
78 | |
79 | /* | |
80 | * The LM87 registers | |
81 | */ | |
82 | ||
83 | /* nr in 0..5 */ | |
84 | #define LM87_REG_IN(nr) (0x20 + (nr)) | |
85 | #define LM87_REG_IN_MAX(nr) (0x2B + (nr) * 2) | |
86 | #define LM87_REG_IN_MIN(nr) (0x2C + (nr) * 2) | |
87 | /* nr in 0..1 */ | |
88 | #define LM87_REG_AIN(nr) (0x28 + (nr)) | |
89 | #define LM87_REG_AIN_MIN(nr) (0x1A + (nr)) | |
90 | #define LM87_REG_AIN_MAX(nr) (0x3B + (nr)) | |
91 | ||
92 | static u8 LM87_REG_TEMP[3] = { 0x27, 0x26, 0x20 }; | |
93 | static u8 LM87_REG_TEMP_HIGH[3] = { 0x39, 0x37, 0x2B }; | |
94 | static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C }; | |
95 | ||
96 | #define LM87_REG_TEMP_HW_INT_LOCK 0x13 | |
97 | #define LM87_REG_TEMP_HW_EXT_LOCK 0x14 | |
98 | #define LM87_REG_TEMP_HW_INT 0x17 | |
99 | #define LM87_REG_TEMP_HW_EXT 0x18 | |
100 | ||
101 | /* nr in 0..1 */ | |
102 | #define LM87_REG_FAN(nr) (0x28 + (nr)) | |
103 | #define LM87_REG_FAN_MIN(nr) (0x3B + (nr)) | |
104 | #define LM87_REG_AOUT 0x19 | |
105 | ||
106 | #define LM87_REG_CONFIG 0x40 | |
107 | #define LM87_REG_CHANNEL_MODE 0x16 | |
108 | #define LM87_REG_VID_FAN_DIV 0x47 | |
109 | #define LM87_REG_VID4 0x49 | |
110 | ||
111 | #define LM87_REG_ALARMS1 0x41 | |
112 | #define LM87_REG_ALARMS2 0x42 | |
113 | ||
114 | #define LM87_REG_COMPANY_ID 0x3E | |
115 | #define LM87_REG_REVISION 0x3F | |
116 | ||
117 | /* | |
118 | * Conversions and various macros | |
119 | * The LM87 uses signed 8-bit values for temperatures. | |
120 | */ | |
121 | ||
c6370dbe GR |
122 | #define IN_FROM_REG(reg, scale) (((reg) * (scale) + 96) / 192) |
123 | #define IN_TO_REG(val, scale) ((val) <= 0 ? 0 : \ | |
12fa55cc | 124 | (val) >= (scale) * 255 / 192 ? 255 : \ |
c6370dbe | 125 | ((val) * 192 + (scale) / 2) / (scale)) |
1da177e4 LT |
126 | |
127 | #define TEMP_FROM_REG(reg) ((reg) * 1000) | |
128 | #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ | |
129 | (val) >= 126500 ? 127 : \ | |
c6370dbe GR |
130 | (((val) < 0 ? (val) - 500 : \ |
131 | (val) + 500) / 1000)) | |
1da177e4 | 132 | |
c6370dbe GR |
133 | #define FAN_FROM_REG(reg, div) ((reg) == 255 || (reg) == 0 ? 0 : \ |
134 | (1350000 + (reg)*(div) / 2) / ((reg) * (div))) | |
135 | #define FAN_TO_REG(val, div) ((val) * (div) * 255 <= 1350000 ? 255 : \ | |
136 | (1350000 + (val)*(div) / 2) / ((val) * (div))) | |
1da177e4 LT |
137 | |
138 | #define FAN_DIV_FROM_REG(reg) (1 << (reg)) | |
139 | ||
140 | /* analog out is 9.80mV/LSB */ | |
141 | #define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10) | |
142 | #define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \ | |
143 | (val) >= 2500 ? 255 : \ | |
144 | ((val) * 10 + 49) / 98) | |
145 | ||
146 | /* nr in 0..1 */ | |
147 | #define CHAN_NO_FAN(nr) (1 << (nr)) | |
148 | #define CHAN_TEMP3 (1 << 2) | |
149 | #define CHAN_VCC_5V (1 << 3) | |
889af3d5 | 150 | #define CHAN_NO_VID (1 << 7) |
1da177e4 | 151 | |
1da177e4 LT |
152 | /* |
153 | * Client data (each client gets its own) | |
154 | */ | |
155 | ||
156 | struct lm87_data { | |
9a61bf63 | 157 | struct mutex update_lock; |
1da177e4 LT |
158 | char valid; /* zero until following fields are valid */ |
159 | unsigned long last_updated; /* In jiffies */ | |
160 | ||
161 | u8 channel; /* register value */ | |
d2cac802 | 162 | u8 config; /* original register value */ |
1da177e4 LT |
163 | |
164 | u8 in[8]; /* register value */ | |
165 | u8 in_max[8]; /* register value */ | |
166 | u8 in_min[8]; /* register value */ | |
167 | u16 in_scale[8]; | |
168 | ||
169 | s8 temp[3]; /* register value */ | |
170 | s8 temp_high[3]; /* register value */ | |
171 | s8 temp_low[3]; /* register value */ | |
172 | s8 temp_crit_int; /* min of two register values */ | |
173 | s8 temp_crit_ext; /* min of two register values */ | |
174 | ||
175 | u8 fan[2]; /* register value */ | |
176 | u8 fan_min[2]; /* register value */ | |
177 | u8 fan_div[2]; /* register value, shifted right */ | |
178 | u8 aout; /* register value */ | |
179 | ||
180 | u16 alarms; /* register values, combined */ | |
181 | u8 vid; /* register values, combined */ | |
182 | u8 vrm; | |
00a0c905 JG |
183 | |
184 | const struct attribute_group *attr_groups[6]; | |
1da177e4 LT |
185 | }; |
186 | ||
1da177e4 LT |
187 | static inline int lm87_read_value(struct i2c_client *client, u8 reg) |
188 | { | |
189 | return i2c_smbus_read_byte_data(client, reg); | |
190 | } | |
191 | ||
192 | static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) | |
193 | { | |
194 | return i2c_smbus_write_byte_data(client, reg, value); | |
195 | } | |
196 | ||
8652a264 JD |
197 | static struct lm87_data *lm87_update_device(struct device *dev) |
198 | { | |
00a0c905 | 199 | struct i2c_client *client = dev_get_drvdata(dev); |
8652a264 JD |
200 | struct lm87_data *data = i2c_get_clientdata(client); |
201 | ||
202 | mutex_lock(&data->update_lock); | |
203 | ||
204 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { | |
205 | int i, j; | |
206 | ||
207 | dev_dbg(&client->dev, "Updating data.\n"); | |
208 | ||
209 | i = (data->channel & CHAN_TEMP3) ? 1 : 0; | |
210 | j = (data->channel & CHAN_TEMP3) ? 5 : 6; | |
211 | for (; i < j; i++) { | |
212 | data->in[i] = lm87_read_value(client, | |
213 | LM87_REG_IN(i)); | |
214 | data->in_min[i] = lm87_read_value(client, | |
215 | LM87_REG_IN_MIN(i)); | |
216 | data->in_max[i] = lm87_read_value(client, | |
217 | LM87_REG_IN_MAX(i)); | |
218 | } | |
219 | ||
220 | for (i = 0; i < 2; i++) { | |
221 | if (data->channel & CHAN_NO_FAN(i)) { | |
222 | data->in[6+i] = lm87_read_value(client, | |
223 | LM87_REG_AIN(i)); | |
224 | data->in_max[6+i] = lm87_read_value(client, | |
225 | LM87_REG_AIN_MAX(i)); | |
226 | data->in_min[6+i] = lm87_read_value(client, | |
227 | LM87_REG_AIN_MIN(i)); | |
228 | ||
229 | } else { | |
230 | data->fan[i] = lm87_read_value(client, | |
231 | LM87_REG_FAN(i)); | |
232 | data->fan_min[i] = lm87_read_value(client, | |
233 | LM87_REG_FAN_MIN(i)); | |
234 | } | |
235 | } | |
236 | ||
237 | j = (data->channel & CHAN_TEMP3) ? 3 : 2; | |
238 | for (i = 0 ; i < j; i++) { | |
239 | data->temp[i] = lm87_read_value(client, | |
240 | LM87_REG_TEMP[i]); | |
241 | data->temp_high[i] = lm87_read_value(client, | |
242 | LM87_REG_TEMP_HIGH[i]); | |
243 | data->temp_low[i] = lm87_read_value(client, | |
244 | LM87_REG_TEMP_LOW[i]); | |
245 | } | |
246 | ||
247 | i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); | |
248 | j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); | |
249 | data->temp_crit_int = min(i, j); | |
250 | ||
251 | i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); | |
252 | j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); | |
253 | data->temp_crit_ext = min(i, j); | |
254 | ||
255 | i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); | |
256 | data->fan_div[0] = (i >> 4) & 0x03; | |
257 | data->fan_div[1] = (i >> 6) & 0x03; | |
258 | data->vid = (i & 0x0F) | |
259 | | (lm87_read_value(client, LM87_REG_VID4) & 0x01) | |
260 | << 4; | |
261 | ||
262 | data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) | |
263 | | (lm87_read_value(client, LM87_REG_ALARMS2) | |
264 | << 8); | |
265 | data->aout = lm87_read_value(client, LM87_REG_AOUT); | |
266 | ||
267 | data->last_updated = jiffies; | |
268 | data->valid = 1; | |
269 | } | |
270 | ||
271 | mutex_unlock(&data->update_lock); | |
272 | ||
273 | return data; | |
274 | } | |
275 | ||
276 | /* | |
277 | * Sysfs stuff | |
278 | */ | |
279 | ||
0e190b7f JD |
280 | static ssize_t show_in_input(struct device *dev, struct device_attribute *attr, |
281 | char *buf) | |
282 | { | |
283 | struct lm87_data *data = lm87_update_device(dev); | |
284 | int nr = to_sensor_dev_attr(attr)->index; | |
285 | ||
286 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in[nr], | |
287 | data->in_scale[nr])); | |
288 | } | |
289 | ||
290 | static ssize_t show_in_min(struct device *dev, | |
291 | struct device_attribute *attr, char *buf) | |
292 | { | |
293 | struct lm87_data *data = lm87_update_device(dev); | |
294 | int nr = to_sensor_dev_attr(attr)->index; | |
295 | ||
296 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[nr], | |
297 | data->in_scale[nr])); | |
298 | } | |
299 | ||
300 | static ssize_t show_in_max(struct device *dev, | |
301 | struct device_attribute *attr, char *buf) | |
302 | { | |
303 | struct lm87_data *data = lm87_update_device(dev); | |
304 | int nr = to_sensor_dev_attr(attr)->index; | |
305 | ||
306 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[nr], | |
307 | data->in_scale[nr])); | |
308 | } | |
309 | ||
310 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, | |
311 | const char *buf, size_t count) | |
1da177e4 | 312 | { |
00a0c905 | 313 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 314 | struct lm87_data *data = i2c_get_clientdata(client); |
0e190b7f | 315 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
316 | long val; |
317 | int err; | |
318 | ||
319 | err = kstrtol(buf, 10, &val); | |
320 | if (err) | |
321 | return err; | |
1da177e4 | 322 | |
9a61bf63 | 323 | mutex_lock(&data->update_lock); |
1da177e4 | 324 | data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); |
c6370dbe GR |
325 | lm87_write_value(client, nr < 6 ? LM87_REG_IN_MIN(nr) : |
326 | LM87_REG_AIN_MIN(nr - 6), data->in_min[nr]); | |
9a61bf63 | 327 | mutex_unlock(&data->update_lock); |
c6370dbe | 328 | return count; |
1da177e4 LT |
329 | } |
330 | ||
0e190b7f JD |
331 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
332 | const char *buf, size_t count) | |
1da177e4 | 333 | { |
00a0c905 | 334 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 335 | struct lm87_data *data = i2c_get_clientdata(client); |
0e190b7f | 336 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
337 | long val; |
338 | int err; | |
339 | ||
340 | err = kstrtol(buf, 10, &val); | |
341 | if (err) | |
342 | return err; | |
1da177e4 | 343 | |
9a61bf63 | 344 | mutex_lock(&data->update_lock); |
1da177e4 | 345 | data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); |
c6370dbe GR |
346 | lm87_write_value(client, nr < 6 ? LM87_REG_IN_MAX(nr) : |
347 | LM87_REG_AIN_MAX(nr - 6), data->in_max[nr]); | |
9a61bf63 | 348 | mutex_unlock(&data->update_lock); |
c6370dbe | 349 | return count; |
1da177e4 LT |
350 | } |
351 | ||
352 | #define set_in(offset) \ | |
0e190b7f JD |
353 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
354 | show_in_input, NULL, offset); \ | |
355 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
356 | show_in_min, set_in_min, offset); \ | |
357 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
358 | show_in_max, set_in_max, offset) | |
1da177e4 LT |
359 | set_in(0); |
360 | set_in(1); | |
361 | set_in(2); | |
362 | set_in(3); | |
363 | set_in(4); | |
364 | set_in(5); | |
365 | set_in(6); | |
366 | set_in(7); | |
367 | ||
0e190b7f JD |
368 | static ssize_t show_temp_input(struct device *dev, |
369 | struct device_attribute *attr, char *buf) | |
370 | { | |
371 | struct lm87_data *data = lm87_update_device(dev); | |
372 | int nr = to_sensor_dev_attr(attr)->index; | |
373 | ||
374 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
375 | } | |
376 | ||
377 | static ssize_t show_temp_low(struct device *dev, | |
378 | struct device_attribute *attr, char *buf) | |
379 | { | |
380 | struct lm87_data *data = lm87_update_device(dev); | |
381 | int nr = to_sensor_dev_attr(attr)->index; | |
382 | ||
383 | return sprintf(buf, "%d\n", | |
384 | TEMP_FROM_REG(data->temp_low[nr])); | |
385 | } | |
386 | ||
387 | static ssize_t show_temp_high(struct device *dev, | |
388 | struct device_attribute *attr, char *buf) | |
389 | { | |
390 | struct lm87_data *data = lm87_update_device(dev); | |
391 | int nr = to_sensor_dev_attr(attr)->index; | |
392 | ||
393 | return sprintf(buf, "%d\n", | |
394 | TEMP_FROM_REG(data->temp_high[nr])); | |
395 | } | |
396 | ||
397 | static ssize_t set_temp_low(struct device *dev, struct device_attribute *attr, | |
398 | const char *buf, size_t count) | |
1da177e4 | 399 | { |
00a0c905 | 400 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 401 | struct lm87_data *data = i2c_get_clientdata(client); |
0e190b7f | 402 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
403 | long val; |
404 | int err; | |
405 | ||
406 | err = kstrtol(buf, 10, &val); | |
407 | if (err) | |
408 | return err; | |
1da177e4 | 409 | |
9a61bf63 | 410 | mutex_lock(&data->update_lock); |
1da177e4 LT |
411 | data->temp_low[nr] = TEMP_TO_REG(val); |
412 | lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); | |
9a61bf63 | 413 | mutex_unlock(&data->update_lock); |
c6370dbe | 414 | return count; |
1da177e4 LT |
415 | } |
416 | ||
0e190b7f JD |
417 | static ssize_t set_temp_high(struct device *dev, struct device_attribute *attr, |
418 | const char *buf, size_t count) | |
1da177e4 | 419 | { |
00a0c905 | 420 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 421 | struct lm87_data *data = i2c_get_clientdata(client); |
0e190b7f | 422 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
423 | long val; |
424 | int err; | |
425 | ||
426 | err = kstrtol(buf, 10, &val); | |
427 | if (err) | |
428 | return err; | |
1da177e4 | 429 | |
9a61bf63 | 430 | mutex_lock(&data->update_lock); |
1da177e4 LT |
431 | data->temp_high[nr] = TEMP_TO_REG(val); |
432 | lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); | |
9a61bf63 | 433 | mutex_unlock(&data->update_lock); |
c6370dbe | 434 | return count; |
1da177e4 LT |
435 | } |
436 | ||
437 | #define set_temp(offset) \ | |
0e190b7f JD |
438 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
439 | show_temp_input, NULL, offset - 1); \ | |
440 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
441 | show_temp_high, set_temp_high, offset - 1); \ | |
442 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
443 | show_temp_low, set_temp_low, offset - 1) | |
1da177e4 LT |
444 | set_temp(1); |
445 | set_temp(2); | |
446 | set_temp(3); | |
447 | ||
07a366cc JL |
448 | static ssize_t temp1_crit_show(struct device *dev, |
449 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
450 | { |
451 | struct lm87_data *data = lm87_update_device(dev); | |
452 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); | |
453 | } | |
454 | ||
07a366cc JL |
455 | static ssize_t temp2_crit_show(struct device *dev, |
456 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
457 | { |
458 | struct lm87_data *data = lm87_update_device(dev); | |
459 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); | |
460 | } | |
461 | ||
07a366cc JL |
462 | static DEVICE_ATTR_RO(temp1_crit); |
463 | static DEVICE_ATTR_RO(temp2_crit); | |
464 | static DEVICE_ATTR(temp3_crit, S_IRUGO, temp2_crit_show, NULL); | |
1da177e4 | 465 | |
0e190b7f JD |
466 | static ssize_t show_fan_input(struct device *dev, |
467 | struct device_attribute *attr, char *buf) | |
468 | { | |
469 | struct lm87_data *data = lm87_update_device(dev); | |
470 | int nr = to_sensor_dev_attr(attr)->index; | |
471 | ||
472 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], | |
473 | FAN_DIV_FROM_REG(data->fan_div[nr]))); | |
474 | } | |
475 | ||
476 | static ssize_t show_fan_min(struct device *dev, | |
477 | struct device_attribute *attr, char *buf) | |
478 | { | |
479 | struct lm87_data *data = lm87_update_device(dev); | |
480 | int nr = to_sensor_dev_attr(attr)->index; | |
481 | ||
482 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], | |
483 | FAN_DIV_FROM_REG(data->fan_div[nr]))); | |
484 | } | |
485 | ||
486 | static ssize_t show_fan_div(struct device *dev, | |
487 | struct device_attribute *attr, char *buf) | |
488 | { | |
489 | struct lm87_data *data = lm87_update_device(dev); | |
490 | int nr = to_sensor_dev_attr(attr)->index; | |
491 | ||
492 | return sprintf(buf, "%d\n", | |
493 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
494 | } | |
495 | ||
496 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, | |
497 | const char *buf, size_t count) | |
1da177e4 | 498 | { |
00a0c905 | 499 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 500 | struct lm87_data *data = i2c_get_clientdata(client); |
0e190b7f | 501 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
502 | long val; |
503 | int err; | |
504 | ||
505 | err = kstrtol(buf, 10, &val); | |
506 | if (err) | |
507 | return err; | |
1da177e4 | 508 | |
9a61bf63 | 509 | mutex_lock(&data->update_lock); |
1da177e4 LT |
510 | data->fan_min[nr] = FAN_TO_REG(val, |
511 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
512 | lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 513 | mutex_unlock(&data->update_lock); |
c6370dbe | 514 | return count; |
1da177e4 LT |
515 | } |
516 | ||
c6370dbe GR |
517 | /* |
518 | * Note: we save and restore the fan minimum here, because its value is | |
519 | * determined in part by the fan clock divider. This follows the principle | |
520 | * of least surprise; the user doesn't expect the fan minimum to change just | |
521 | * because the divider changed. | |
522 | */ | |
0e190b7f JD |
523 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
524 | const char *buf, size_t count) | |
1da177e4 | 525 | { |
00a0c905 | 526 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 527 | struct lm87_data *data = i2c_get_clientdata(client); |
0e190b7f | 528 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
529 | long val; |
530 | int err; | |
1da177e4 LT |
531 | unsigned long min; |
532 | u8 reg; | |
533 | ||
c6370dbe GR |
534 | err = kstrtol(buf, 10, &val); |
535 | if (err) | |
536 | return err; | |
537 | ||
9a61bf63 | 538 | mutex_lock(&data->update_lock); |
1da177e4 LT |
539 | min = FAN_FROM_REG(data->fan_min[nr], |
540 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
541 | ||
542 | switch (val) { | |
c6370dbe GR |
543 | case 1: |
544 | data->fan_div[nr] = 0; | |
545 | break; | |
546 | case 2: | |
547 | data->fan_div[nr] = 1; | |
548 | break; | |
549 | case 4: | |
550 | data->fan_div[nr] = 2; | |
551 | break; | |
552 | case 8: | |
553 | data->fan_div[nr] = 3; | |
554 | break; | |
1da177e4 | 555 | default: |
9a61bf63 | 556 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
557 | return -EINVAL; |
558 | } | |
559 | ||
560 | reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); | |
561 | switch (nr) { | |
562 | case 0: | |
563 | reg = (reg & 0xCF) | (data->fan_div[0] << 4); | |
564 | break; | |
565 | case 1: | |
566 | reg = (reg & 0x3F) | (data->fan_div[1] << 6); | |
567 | break; | |
568 | } | |
569 | lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); | |
570 | ||
571 | data->fan_min[nr] = FAN_TO_REG(min, val); | |
572 | lm87_write_value(client, LM87_REG_FAN_MIN(nr), | |
573 | data->fan_min[nr]); | |
9a61bf63 | 574 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
575 | |
576 | return count; | |
577 | } | |
578 | ||
579 | #define set_fan(offset) \ | |
0e190b7f JD |
580 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
581 | show_fan_input, NULL, offset - 1); \ | |
582 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
583 | show_fan_min, set_fan_min, offset - 1); \ | |
584 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
585 | show_fan_div, set_fan_div, offset - 1) | |
1da177e4 LT |
586 | set_fan(1); |
587 | set_fan(2); | |
588 | ||
07a366cc | 589 | static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, |
c6370dbe | 590 | char *buf) |
1da177e4 LT |
591 | { |
592 | struct lm87_data *data = lm87_update_device(dev); | |
593 | return sprintf(buf, "%d\n", data->alarms); | |
594 | } | |
07a366cc | 595 | static DEVICE_ATTR_RO(alarms); |
1da177e4 | 596 | |
07a366cc JL |
597 | static ssize_t cpu0_vid_show(struct device *dev, |
598 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
599 | { |
600 | struct lm87_data *data = lm87_update_device(dev); | |
601 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); | |
602 | } | |
07a366cc | 603 | static DEVICE_ATTR_RO(cpu0_vid); |
1da177e4 | 604 | |
07a366cc | 605 | static ssize_t vrm_show(struct device *dev, struct device_attribute *attr, |
c6370dbe | 606 | char *buf) |
1da177e4 | 607 | { |
90d6619a | 608 | struct lm87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
609 | return sprintf(buf, "%d\n", data->vrm); |
610 | } | |
07a366cc JL |
611 | static ssize_t vrm_store(struct device *dev, struct device_attribute *attr, |
612 | const char *buf, size_t count) | |
1da177e4 | 613 | { |
8f74efe8 | 614 | struct lm87_data *data = dev_get_drvdata(dev); |
c6370dbe GR |
615 | unsigned long val; |
616 | int err; | |
617 | ||
618 | err = kstrtoul(buf, 10, &val); | |
619 | if (err) | |
620 | return err; | |
fa642d9d AL |
621 | |
622 | if (val > 255) | |
623 | return -EINVAL; | |
624 | ||
c6370dbe | 625 | data->vrm = val; |
1da177e4 LT |
626 | return count; |
627 | } | |
07a366cc | 628 | static DEVICE_ATTR_RW(vrm); |
1da177e4 | 629 | |
07a366cc JL |
630 | static ssize_t aout_output_show(struct device *dev, |
631 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
632 | { |
633 | struct lm87_data *data = lm87_update_device(dev); | |
634 | return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); | |
635 | } | |
07a366cc JL |
636 | static ssize_t aout_output_store(struct device *dev, |
637 | struct device_attribute *attr, | |
638 | const char *buf, size_t count) | |
1da177e4 | 639 | { |
00a0c905 | 640 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 641 | struct lm87_data *data = i2c_get_clientdata(client); |
c6370dbe GR |
642 | long val; |
643 | int err; | |
644 | ||
645 | err = kstrtol(buf, 10, &val); | |
646 | if (err) | |
647 | return err; | |
1da177e4 | 648 | |
9a61bf63 | 649 | mutex_lock(&data->update_lock); |
1da177e4 LT |
650 | data->aout = AOUT_TO_REG(val); |
651 | lm87_write_value(client, LM87_REG_AOUT, data->aout); | |
9a61bf63 | 652 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
653 | return count; |
654 | } | |
07a366cc | 655 | static DEVICE_ATTR_RW(aout_output); |
1da177e4 | 656 | |
c2803b98 JD |
657 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
658 | char *buf) | |
659 | { | |
660 | struct lm87_data *data = lm87_update_device(dev); | |
661 | int bitnr = to_sensor_dev_attr(attr)->index; | |
662 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
663 | } | |
664 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); | |
665 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); | |
666 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); | |
667 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
668 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); | |
669 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); | |
670 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); | |
671 | static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7); | |
672 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
673 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); | |
674 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5); | |
675 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); | |
676 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); | |
677 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14); | |
678 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); | |
679 | ||
1da177e4 LT |
680 | /* |
681 | * Real code | |
682 | */ | |
683 | ||
0501a381 | 684 | static struct attribute *lm87_attributes[] = { |
0e190b7f JD |
685 | &sensor_dev_attr_in1_input.dev_attr.attr, |
686 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
687 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
c2803b98 | 688 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
0e190b7f JD |
689 | &sensor_dev_attr_in2_input.dev_attr.attr, |
690 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
691 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
c2803b98 | 692 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
0e190b7f JD |
693 | &sensor_dev_attr_in3_input.dev_attr.attr, |
694 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
695 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
c2803b98 | 696 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
0e190b7f JD |
697 | &sensor_dev_attr_in4_input.dev_attr.attr, |
698 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
699 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
c2803b98 | 700 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
0501a381 | 701 | |
0e190b7f JD |
702 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
703 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
704 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
0501a381 | 705 | &dev_attr_temp1_crit.attr, |
c2803b98 | 706 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
0e190b7f JD |
707 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
708 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
709 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
0501a381 | 710 | &dev_attr_temp2_crit.attr, |
c2803b98 JD |
711 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
712 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
0501a381 MH |
713 | |
714 | &dev_attr_alarms.attr, | |
715 | &dev_attr_aout_output.attr, | |
716 | ||
717 | NULL | |
718 | }; | |
719 | ||
720 | static const struct attribute_group lm87_group = { | |
721 | .attrs = lm87_attributes, | |
722 | }; | |
723 | ||
073f1e6c | 724 | static struct attribute *lm87_attributes_in6[] = { |
0e190b7f JD |
725 | &sensor_dev_attr_in6_input.dev_attr.attr, |
726 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
727 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
c2803b98 | 728 | &sensor_dev_attr_in6_alarm.dev_attr.attr, |
073f1e6c GR |
729 | NULL |
730 | }; | |
731 | ||
732 | static const struct attribute_group lm87_group_in6 = { | |
733 | .attrs = lm87_attributes_in6, | |
734 | }; | |
0501a381 | 735 | |
073f1e6c | 736 | static struct attribute *lm87_attributes_fan1[] = { |
0e190b7f JD |
737 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
738 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
739 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
c2803b98 | 740 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
073f1e6c GR |
741 | NULL |
742 | }; | |
743 | ||
744 | static const struct attribute_group lm87_group_fan1 = { | |
745 | .attrs = lm87_attributes_fan1, | |
746 | }; | |
0501a381 | 747 | |
073f1e6c | 748 | static struct attribute *lm87_attributes_in7[] = { |
0e190b7f JD |
749 | &sensor_dev_attr_in7_input.dev_attr.attr, |
750 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
751 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
c2803b98 | 752 | &sensor_dev_attr_in7_alarm.dev_attr.attr, |
073f1e6c GR |
753 | NULL |
754 | }; | |
0501a381 | 755 | |
073f1e6c GR |
756 | static const struct attribute_group lm87_group_in7 = { |
757 | .attrs = lm87_attributes_in7, | |
758 | }; | |
759 | ||
760 | static struct attribute *lm87_attributes_fan2[] = { | |
0e190b7f JD |
761 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
762 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
763 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
c2803b98 | 764 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
073f1e6c GR |
765 | NULL |
766 | }; | |
0501a381 | 767 | |
073f1e6c GR |
768 | static const struct attribute_group lm87_group_fan2 = { |
769 | .attrs = lm87_attributes_fan2, | |
770 | }; | |
771 | ||
772 | static struct attribute *lm87_attributes_temp3[] = { | |
0e190b7f JD |
773 | &sensor_dev_attr_temp3_input.dev_attr.attr, |
774 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
775 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
0501a381 | 776 | &dev_attr_temp3_crit.attr, |
c2803b98 JD |
777 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
778 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
073f1e6c GR |
779 | NULL |
780 | }; | |
0501a381 | 781 | |
073f1e6c GR |
782 | static const struct attribute_group lm87_group_temp3 = { |
783 | .attrs = lm87_attributes_temp3, | |
784 | }; | |
785 | ||
786 | static struct attribute *lm87_attributes_in0_5[] = { | |
0e190b7f JD |
787 | &sensor_dev_attr_in0_input.dev_attr.attr, |
788 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
789 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
c2803b98 | 790 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
0e190b7f JD |
791 | &sensor_dev_attr_in5_input.dev_attr.attr, |
792 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
793 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
c2803b98 | 794 | &sensor_dev_attr_in5_alarm.dev_attr.attr, |
073f1e6c GR |
795 | NULL |
796 | }; | |
797 | ||
798 | static const struct attribute_group lm87_group_in0_5 = { | |
799 | .attrs = lm87_attributes_in0_5, | |
800 | }; | |
0501a381 | 801 | |
073f1e6c | 802 | static struct attribute *lm87_attributes_vid[] = { |
0501a381 MH |
803 | &dev_attr_cpu0_vid.attr, |
804 | &dev_attr_vrm.attr, | |
0501a381 MH |
805 | NULL |
806 | }; | |
807 | ||
073f1e6c GR |
808 | static const struct attribute_group lm87_group_vid = { |
809 | .attrs = lm87_attributes_vid, | |
0501a381 MH |
810 | }; |
811 | ||
a888420a | 812 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
8652a264 | 813 | static int lm87_detect(struct i2c_client *client, struct i2c_board_info *info) |
1da177e4 | 814 | { |
8652a264 | 815 | struct i2c_adapter *adapter = client->adapter; |
52df6440 JD |
816 | const char *name; |
817 | u8 cid, rev; | |
1da177e4 LT |
818 | |
819 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
a888420a | 820 | return -ENODEV; |
1da177e4 | 821 | |
8652a264 | 822 | if (lm87_read_value(client, LM87_REG_CONFIG) & 0x80) |
52df6440 | 823 | return -ENODEV; |
1da177e4 LT |
824 | |
825 | /* Now, we do the remaining detection. */ | |
8652a264 JD |
826 | cid = lm87_read_value(client, LM87_REG_COMPANY_ID); |
827 | rev = lm87_read_value(client, LM87_REG_REVISION); | |
52df6440 JD |
828 | |
829 | if (cid == 0x02 /* National Semiconductor */ | |
830 | && (rev >= 0x01 && rev <= 0x08)) | |
831 | name = "lm87"; | |
832 | else if (cid == 0x41 /* Analog Devices */ | |
833 | && (rev & 0xf0) == 0x10) | |
834 | name = "adm1024"; | |
835 | else { | |
836 | dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n", | |
8652a264 | 837 | client->addr); |
52df6440 | 838 | return -ENODEV; |
1da177e4 LT |
839 | } |
840 | ||
52df6440 | 841 | strlcpy(info->type, name, I2C_NAME_SIZE); |
a888420a JD |
842 | |
843 | return 0; | |
844 | } | |
845 | ||
00a0c905 | 846 | static void lm87_restore_config(void *arg) |
073f1e6c | 847 | { |
00a0c905 JG |
848 | struct i2c_client *client = arg; |
849 | struct lm87_data *data = i2c_get_clientdata(client); | |
850 | ||
851 | lm87_write_value(client, LM87_REG_CONFIG, data->config); | |
073f1e6c GR |
852 | } |
853 | ||
00a0c905 | 854 | static int lm87_init_client(struct i2c_client *client) |
8652a264 JD |
855 | { |
856 | struct lm87_data *data = i2c_get_clientdata(client); | |
00a0c905 | 857 | int rc; |
8652a264 | 858 | |
a8b3a3a5 JH |
859 | if (dev_get_platdata(&client->dev)) { |
860 | data->channel = *(u8 *)dev_get_platdata(&client->dev); | |
8652a264 JD |
861 | lm87_write_value(client, |
862 | LM87_REG_CHANNEL_MODE, data->channel); | |
863 | } else { | |
864 | data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); | |
865 | } | |
866 | data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F; | |
867 | ||
00a0c905 JG |
868 | rc = devm_add_action(&client->dev, lm87_restore_config, client); |
869 | if (rc) | |
870 | return rc; | |
871 | ||
8652a264 JD |
872 | if (!(data->config & 0x01)) { |
873 | int i; | |
874 | ||
875 | /* Limits are left uninitialized after power-up */ | |
876 | for (i = 1; i < 6; i++) { | |
877 | lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); | |
878 | lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); | |
879 | } | |
880 | for (i = 0; i < 2; i++) { | |
881 | lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); | |
882 | lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); | |
883 | lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); | |
884 | lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); | |
885 | } | |
886 | if (data->channel & CHAN_TEMP3) { | |
887 | lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); | |
888 | lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); | |
889 | } else { | |
890 | lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); | |
891 | lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); | |
892 | } | |
893 | } | |
894 | ||
895 | /* Make sure Start is set and INT#_Clear is clear */ | |
896 | if ((data->config & 0x09) != 0x01) | |
897 | lm87_write_value(client, LM87_REG_CONFIG, | |
898 | (data->config & 0x77) | 0x01); | |
00a0c905 | 899 | return 0; |
8652a264 JD |
900 | } |
901 | ||
902 | static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id) | |
a888420a JD |
903 | { |
904 | struct lm87_data *data; | |
00a0c905 | 905 | struct device *hwmon_dev; |
a888420a | 906 | int err; |
00a0c905 | 907 | unsigned int group_tail = 0; |
a888420a | 908 | |
5ff512b4 GR |
909 | data = devm_kzalloc(&client->dev, sizeof(struct lm87_data), GFP_KERNEL); |
910 | if (!data) | |
911 | return -ENOMEM; | |
a888420a | 912 | |
8652a264 | 913 | i2c_set_clientdata(client, data); |
9a61bf63 | 914 | mutex_init(&data->update_lock); |
1da177e4 | 915 | |
1da177e4 | 916 | /* Initialize the LM87 chip */ |
00a0c905 JG |
917 | err = lm87_init_client(client); |
918 | if (err) | |
919 | return err; | |
1da177e4 LT |
920 | |
921 | data->in_scale[0] = 2500; | |
922 | data->in_scale[1] = 2700; | |
923 | data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; | |
924 | data->in_scale[3] = 5000; | |
925 | data->in_scale[4] = 12000; | |
926 | data->in_scale[5] = 2700; | |
927 | data->in_scale[6] = 1875; | |
928 | data->in_scale[7] = 1875; | |
929 | ||
00a0c905 JG |
930 | /* |
931 | * Construct the list of attributes, the list depends on the | |
932 | * configuration of the chip | |
933 | */ | |
934 | data->attr_groups[group_tail++] = &lm87_group; | |
935 | if (data->channel & CHAN_NO_FAN(0)) | |
936 | data->attr_groups[group_tail++] = &lm87_group_in6; | |
937 | else | |
938 | data->attr_groups[group_tail++] = &lm87_group_fan1; | |
939 | ||
940 | if (data->channel & CHAN_NO_FAN(1)) | |
941 | data->attr_groups[group_tail++] = &lm87_group_in7; | |
942 | else | |
943 | data->attr_groups[group_tail++] = &lm87_group_fan2; | |
944 | ||
945 | if (data->channel & CHAN_TEMP3) | |
946 | data->attr_groups[group_tail++] = &lm87_group_temp3; | |
947 | else | |
948 | data->attr_groups[group_tail++] = &lm87_group_in0_5; | |
1da177e4 LT |
949 | |
950 | if (!(data->channel & CHAN_NO_VID)) { | |
8a665a05 | 951 | data->vrm = vid_which_vrm(); |
00a0c905 | 952 | data->attr_groups[group_tail++] = &lm87_group_vid; |
0501a381 | 953 | } |
1da177e4 | 954 | |
00a0c905 JG |
955 | hwmon_dev = devm_hwmon_device_register_with_groups( |
956 | &client->dev, client->name, client, data->attr_groups); | |
957 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
1da177e4 LT |
958 | } |
959 | ||
8652a264 JD |
960 | /* |
961 | * Driver data (common to all clients) | |
962 | */ | |
1da177e4 | 963 | |
8652a264 JD |
964 | static const struct i2c_device_id lm87_id[] = { |
965 | { "lm87", lm87 }, | |
966 | { "adm1024", adm1024 }, | |
967 | { } | |
968 | }; | |
969 | MODULE_DEVICE_TABLE(i2c, lm87_id); | |
1da177e4 | 970 | |
8652a264 JD |
971 | static struct i2c_driver lm87_driver = { |
972 | .class = I2C_CLASS_HWMON, | |
973 | .driver = { | |
974 | .name = "lm87", | |
975 | }, | |
976 | .probe = lm87_probe, | |
8652a264 JD |
977 | .id_table = lm87_id, |
978 | .detect = lm87_detect, | |
979 | .address_list = normal_i2c, | |
980 | }; | |
1da177e4 | 981 | |
f0967eea | 982 | module_i2c_driver(lm87_driver); |
1da177e4 | 983 | |
7c81c60f | 984 | MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de> and others"); |
1da177e4 LT |
985 | MODULE_DESCRIPTION("LM87 driver"); |
986 | MODULE_LICENSE("GPL"); |