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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 : \ | |
1da177e4 | 124 | (val) * 192 >= (scale) * 255 ? 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 { | |
1beeffe4 | 157 | struct device *hwmon_dev; |
9a61bf63 | 158 | struct mutex update_lock; |
1da177e4 LT |
159 | char valid; /* zero until following fields are valid */ |
160 | unsigned long last_updated; /* In jiffies */ | |
161 | ||
162 | u8 channel; /* register value */ | |
d2cac802 | 163 | u8 config; /* original register value */ |
1da177e4 LT |
164 | |
165 | u8 in[8]; /* register value */ | |
166 | u8 in_max[8]; /* register value */ | |
167 | u8 in_min[8]; /* register value */ | |
168 | u16 in_scale[8]; | |
169 | ||
170 | s8 temp[3]; /* register value */ | |
171 | s8 temp_high[3]; /* register value */ | |
172 | s8 temp_low[3]; /* register value */ | |
173 | s8 temp_crit_int; /* min of two register values */ | |
174 | s8 temp_crit_ext; /* min of two register values */ | |
175 | ||
176 | u8 fan[2]; /* register value */ | |
177 | u8 fan_min[2]; /* register value */ | |
178 | u8 fan_div[2]; /* register value, shifted right */ | |
179 | u8 aout; /* register value */ | |
180 | ||
181 | u16 alarms; /* register values, combined */ | |
182 | u8 vid; /* register values, combined */ | |
183 | u8 vrm; | |
184 | }; | |
185 | ||
1da177e4 LT |
186 | static inline int lm87_read_value(struct i2c_client *client, u8 reg) |
187 | { | |
188 | return i2c_smbus_read_byte_data(client, reg); | |
189 | } | |
190 | ||
191 | static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) | |
192 | { | |
193 | return i2c_smbus_write_byte_data(client, reg, value); | |
194 | } | |
195 | ||
8652a264 JD |
196 | static struct lm87_data *lm87_update_device(struct device *dev) |
197 | { | |
198 | struct i2c_client *client = to_i2c_client(dev); | |
199 | struct lm87_data *data = i2c_get_clientdata(client); | |
200 | ||
201 | mutex_lock(&data->update_lock); | |
202 | ||
203 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { | |
204 | int i, j; | |
205 | ||
206 | dev_dbg(&client->dev, "Updating data.\n"); | |
207 | ||
208 | i = (data->channel & CHAN_TEMP3) ? 1 : 0; | |
209 | j = (data->channel & CHAN_TEMP3) ? 5 : 6; | |
210 | for (; i < j; i++) { | |
211 | data->in[i] = lm87_read_value(client, | |
212 | LM87_REG_IN(i)); | |
213 | data->in_min[i] = lm87_read_value(client, | |
214 | LM87_REG_IN_MIN(i)); | |
215 | data->in_max[i] = lm87_read_value(client, | |
216 | LM87_REG_IN_MAX(i)); | |
217 | } | |
218 | ||
219 | for (i = 0; i < 2; i++) { | |
220 | if (data->channel & CHAN_NO_FAN(i)) { | |
221 | data->in[6+i] = lm87_read_value(client, | |
222 | LM87_REG_AIN(i)); | |
223 | data->in_max[6+i] = lm87_read_value(client, | |
224 | LM87_REG_AIN_MAX(i)); | |
225 | data->in_min[6+i] = lm87_read_value(client, | |
226 | LM87_REG_AIN_MIN(i)); | |
227 | ||
228 | } else { | |
229 | data->fan[i] = lm87_read_value(client, | |
230 | LM87_REG_FAN(i)); | |
231 | data->fan_min[i] = lm87_read_value(client, | |
232 | LM87_REG_FAN_MIN(i)); | |
233 | } | |
234 | } | |
235 | ||
236 | j = (data->channel & CHAN_TEMP3) ? 3 : 2; | |
237 | for (i = 0 ; i < j; i++) { | |
238 | data->temp[i] = lm87_read_value(client, | |
239 | LM87_REG_TEMP[i]); | |
240 | data->temp_high[i] = lm87_read_value(client, | |
241 | LM87_REG_TEMP_HIGH[i]); | |
242 | data->temp_low[i] = lm87_read_value(client, | |
243 | LM87_REG_TEMP_LOW[i]); | |
244 | } | |
245 | ||
246 | i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); | |
247 | j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); | |
248 | data->temp_crit_int = min(i, j); | |
249 | ||
250 | i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); | |
251 | j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); | |
252 | data->temp_crit_ext = min(i, j); | |
253 | ||
254 | i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); | |
255 | data->fan_div[0] = (i >> 4) & 0x03; | |
256 | data->fan_div[1] = (i >> 6) & 0x03; | |
257 | data->vid = (i & 0x0F) | |
258 | | (lm87_read_value(client, LM87_REG_VID4) & 0x01) | |
259 | << 4; | |
260 | ||
261 | data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) | |
262 | | (lm87_read_value(client, LM87_REG_ALARMS2) | |
263 | << 8); | |
264 | data->aout = lm87_read_value(client, LM87_REG_AOUT); | |
265 | ||
266 | data->last_updated = jiffies; | |
267 | data->valid = 1; | |
268 | } | |
269 | ||
270 | mutex_unlock(&data->update_lock); | |
271 | ||
272 | return data; | |
273 | } | |
274 | ||
275 | /* | |
276 | * Sysfs stuff | |
277 | */ | |
278 | ||
0e190b7f JD |
279 | static ssize_t show_in_input(struct device *dev, struct device_attribute *attr, |
280 | char *buf) | |
281 | { | |
282 | struct lm87_data *data = lm87_update_device(dev); | |
283 | int nr = to_sensor_dev_attr(attr)->index; | |
284 | ||
285 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in[nr], | |
286 | data->in_scale[nr])); | |
287 | } | |
288 | ||
289 | static ssize_t show_in_min(struct device *dev, | |
290 | struct device_attribute *attr, char *buf) | |
291 | { | |
292 | struct lm87_data *data = lm87_update_device(dev); | |
293 | int nr = to_sensor_dev_attr(attr)->index; | |
294 | ||
295 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[nr], | |
296 | data->in_scale[nr])); | |
297 | } | |
298 | ||
299 | static ssize_t show_in_max(struct device *dev, | |
300 | struct device_attribute *attr, char *buf) | |
301 | { | |
302 | struct lm87_data *data = lm87_update_device(dev); | |
303 | int nr = to_sensor_dev_attr(attr)->index; | |
304 | ||
305 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[nr], | |
306 | data->in_scale[nr])); | |
307 | } | |
308 | ||
309 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, | |
310 | const char *buf, size_t count) | |
1da177e4 LT |
311 | { |
312 | struct i2c_client *client = to_i2c_client(dev); | |
313 | struct lm87_data *data = i2c_get_clientdata(client); | |
0e190b7f | 314 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
315 | long val; |
316 | int err; | |
317 | ||
318 | err = kstrtol(buf, 10, &val); | |
319 | if (err) | |
320 | return err; | |
1da177e4 | 321 | |
9a61bf63 | 322 | mutex_lock(&data->update_lock); |
1da177e4 | 323 | data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); |
c6370dbe GR |
324 | lm87_write_value(client, nr < 6 ? LM87_REG_IN_MIN(nr) : |
325 | LM87_REG_AIN_MIN(nr - 6), data->in_min[nr]); | |
9a61bf63 | 326 | mutex_unlock(&data->update_lock); |
c6370dbe | 327 | return count; |
1da177e4 LT |
328 | } |
329 | ||
0e190b7f JD |
330 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
331 | const char *buf, size_t count) | |
1da177e4 LT |
332 | { |
333 | struct i2c_client *client = to_i2c_client(dev); | |
334 | struct lm87_data *data = i2c_get_clientdata(client); | |
0e190b7f | 335 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
336 | long val; |
337 | int err; | |
338 | ||
339 | err = kstrtol(buf, 10, &val); | |
340 | if (err) | |
341 | return err; | |
1da177e4 | 342 | |
9a61bf63 | 343 | mutex_lock(&data->update_lock); |
1da177e4 | 344 | data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); |
c6370dbe GR |
345 | lm87_write_value(client, nr < 6 ? LM87_REG_IN_MAX(nr) : |
346 | LM87_REG_AIN_MAX(nr - 6), data->in_max[nr]); | |
9a61bf63 | 347 | mutex_unlock(&data->update_lock); |
c6370dbe | 348 | return count; |
1da177e4 LT |
349 | } |
350 | ||
351 | #define set_in(offset) \ | |
0e190b7f JD |
352 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
353 | show_in_input, NULL, offset); \ | |
354 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
355 | show_in_min, set_in_min, offset); \ | |
356 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
357 | show_in_max, set_in_max, offset) | |
1da177e4 LT |
358 | set_in(0); |
359 | set_in(1); | |
360 | set_in(2); | |
361 | set_in(3); | |
362 | set_in(4); | |
363 | set_in(5); | |
364 | set_in(6); | |
365 | set_in(7); | |
366 | ||
0e190b7f JD |
367 | static ssize_t show_temp_input(struct device *dev, |
368 | struct device_attribute *attr, char *buf) | |
369 | { | |
370 | struct lm87_data *data = lm87_update_device(dev); | |
371 | int nr = to_sensor_dev_attr(attr)->index; | |
372 | ||
373 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
374 | } | |
375 | ||
376 | static ssize_t show_temp_low(struct device *dev, | |
377 | struct device_attribute *attr, char *buf) | |
378 | { | |
379 | struct lm87_data *data = lm87_update_device(dev); | |
380 | int nr = to_sensor_dev_attr(attr)->index; | |
381 | ||
382 | return sprintf(buf, "%d\n", | |
383 | TEMP_FROM_REG(data->temp_low[nr])); | |
384 | } | |
385 | ||
386 | static ssize_t show_temp_high(struct device *dev, | |
387 | struct device_attribute *attr, char *buf) | |
388 | { | |
389 | struct lm87_data *data = lm87_update_device(dev); | |
390 | int nr = to_sensor_dev_attr(attr)->index; | |
391 | ||
392 | return sprintf(buf, "%d\n", | |
393 | TEMP_FROM_REG(data->temp_high[nr])); | |
394 | } | |
395 | ||
396 | static ssize_t set_temp_low(struct device *dev, struct device_attribute *attr, | |
397 | const char *buf, size_t count) | |
1da177e4 LT |
398 | { |
399 | struct i2c_client *client = to_i2c_client(dev); | |
400 | struct lm87_data *data = i2c_get_clientdata(client); | |
0e190b7f | 401 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
402 | long val; |
403 | int err; | |
404 | ||
405 | err = kstrtol(buf, 10, &val); | |
406 | if (err) | |
407 | return err; | |
1da177e4 | 408 | |
9a61bf63 | 409 | mutex_lock(&data->update_lock); |
1da177e4 LT |
410 | data->temp_low[nr] = TEMP_TO_REG(val); |
411 | lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); | |
9a61bf63 | 412 | mutex_unlock(&data->update_lock); |
c6370dbe | 413 | return count; |
1da177e4 LT |
414 | } |
415 | ||
0e190b7f JD |
416 | static ssize_t set_temp_high(struct device *dev, struct device_attribute *attr, |
417 | const char *buf, size_t count) | |
1da177e4 LT |
418 | { |
419 | struct i2c_client *client = to_i2c_client(dev); | |
420 | struct lm87_data *data = i2c_get_clientdata(client); | |
0e190b7f | 421 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
422 | long val; |
423 | int err; | |
424 | ||
425 | err = kstrtol(buf, 10, &val); | |
426 | if (err) | |
427 | return err; | |
1da177e4 | 428 | |
9a61bf63 | 429 | mutex_lock(&data->update_lock); |
1da177e4 LT |
430 | data->temp_high[nr] = TEMP_TO_REG(val); |
431 | lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); | |
9a61bf63 | 432 | mutex_unlock(&data->update_lock); |
c6370dbe | 433 | return count; |
1da177e4 LT |
434 | } |
435 | ||
436 | #define set_temp(offset) \ | |
0e190b7f JD |
437 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
438 | show_temp_input, NULL, offset - 1); \ | |
439 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
440 | show_temp_high, set_temp_high, offset - 1); \ | |
441 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
442 | show_temp_low, set_temp_low, offset - 1) | |
1da177e4 LT |
443 | set_temp(1); |
444 | set_temp(2); | |
445 | set_temp(3); | |
446 | ||
c6370dbe GR |
447 | static ssize_t show_temp_crit_int(struct device *dev, |
448 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
449 | { |
450 | struct lm87_data *data = lm87_update_device(dev); | |
451 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); | |
452 | } | |
453 | ||
c6370dbe GR |
454 | static ssize_t show_temp_crit_ext(struct device *dev, |
455 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
456 | { |
457 | struct lm87_data *data = lm87_update_device(dev); | |
458 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); | |
459 | } | |
460 | ||
461 | static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit_int, NULL); | |
462 | static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit_ext, NULL); | |
463 | static DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit_ext, NULL); | |
464 | ||
0e190b7f JD |
465 | static ssize_t show_fan_input(struct device *dev, |
466 | struct device_attribute *attr, char *buf) | |
467 | { | |
468 | struct lm87_data *data = lm87_update_device(dev); | |
469 | int nr = to_sensor_dev_attr(attr)->index; | |
470 | ||
471 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], | |
472 | FAN_DIV_FROM_REG(data->fan_div[nr]))); | |
473 | } | |
474 | ||
475 | static ssize_t show_fan_min(struct device *dev, | |
476 | struct device_attribute *attr, char *buf) | |
477 | { | |
478 | struct lm87_data *data = lm87_update_device(dev); | |
479 | int nr = to_sensor_dev_attr(attr)->index; | |
480 | ||
481 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], | |
482 | FAN_DIV_FROM_REG(data->fan_div[nr]))); | |
483 | } | |
484 | ||
485 | static ssize_t show_fan_div(struct device *dev, | |
486 | struct device_attribute *attr, char *buf) | |
487 | { | |
488 | struct lm87_data *data = lm87_update_device(dev); | |
489 | int nr = to_sensor_dev_attr(attr)->index; | |
490 | ||
491 | return sprintf(buf, "%d\n", | |
492 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
493 | } | |
494 | ||
495 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, | |
496 | const char *buf, size_t count) | |
1da177e4 LT |
497 | { |
498 | struct i2c_client *client = to_i2c_client(dev); | |
499 | struct lm87_data *data = i2c_get_clientdata(client); | |
0e190b7f | 500 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
501 | long val; |
502 | int err; | |
503 | ||
504 | err = kstrtol(buf, 10, &val); | |
505 | if (err) | |
506 | return err; | |
1da177e4 | 507 | |
9a61bf63 | 508 | mutex_lock(&data->update_lock); |
1da177e4 LT |
509 | data->fan_min[nr] = FAN_TO_REG(val, |
510 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
511 | lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 512 | mutex_unlock(&data->update_lock); |
c6370dbe | 513 | return count; |
1da177e4 LT |
514 | } |
515 | ||
c6370dbe GR |
516 | /* |
517 | * Note: we save and restore the fan minimum here, because its value is | |
518 | * determined in part by the fan clock divider. This follows the principle | |
519 | * of least surprise; the user doesn't expect the fan minimum to change just | |
520 | * because the divider changed. | |
521 | */ | |
0e190b7f JD |
522 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
523 | const char *buf, size_t count) | |
1da177e4 LT |
524 | { |
525 | struct i2c_client *client = to_i2c_client(dev); | |
526 | struct lm87_data *data = i2c_get_clientdata(client); | |
0e190b7f | 527 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
528 | long val; |
529 | int err; | |
1da177e4 LT |
530 | unsigned long min; |
531 | u8 reg; | |
532 | ||
c6370dbe GR |
533 | err = kstrtol(buf, 10, &val); |
534 | if (err) | |
535 | return err; | |
536 | ||
9a61bf63 | 537 | mutex_lock(&data->update_lock); |
1da177e4 LT |
538 | min = FAN_FROM_REG(data->fan_min[nr], |
539 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
540 | ||
541 | switch (val) { | |
c6370dbe GR |
542 | case 1: |
543 | data->fan_div[nr] = 0; | |
544 | break; | |
545 | case 2: | |
546 | data->fan_div[nr] = 1; | |
547 | break; | |
548 | case 4: | |
549 | data->fan_div[nr] = 2; | |
550 | break; | |
551 | case 8: | |
552 | data->fan_div[nr] = 3; | |
553 | break; | |
1da177e4 | 554 | default: |
9a61bf63 | 555 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
556 | return -EINVAL; |
557 | } | |
558 | ||
559 | reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); | |
560 | switch (nr) { | |
561 | case 0: | |
562 | reg = (reg & 0xCF) | (data->fan_div[0] << 4); | |
563 | break; | |
564 | case 1: | |
565 | reg = (reg & 0x3F) | (data->fan_div[1] << 6); | |
566 | break; | |
567 | } | |
568 | lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); | |
569 | ||
570 | data->fan_min[nr] = FAN_TO_REG(min, val); | |
571 | lm87_write_value(client, LM87_REG_FAN_MIN(nr), | |
572 | data->fan_min[nr]); | |
9a61bf63 | 573 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
574 | |
575 | return count; | |
576 | } | |
577 | ||
578 | #define set_fan(offset) \ | |
0e190b7f JD |
579 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
580 | show_fan_input, NULL, offset - 1); \ | |
581 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
582 | show_fan_min, set_fan_min, offset - 1); \ | |
583 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
584 | show_fan_div, set_fan_div, offset - 1) | |
1da177e4 LT |
585 | set_fan(1); |
586 | set_fan(2); | |
587 | ||
c6370dbe GR |
588 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, |
589 | char *buf) | |
1da177e4 LT |
590 | { |
591 | struct lm87_data *data = lm87_update_device(dev); | |
592 | return sprintf(buf, "%d\n", data->alarms); | |
593 | } | |
594 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
595 | ||
c6370dbe GR |
596 | static ssize_t show_vid(struct device *dev, struct device_attribute *attr, |
597 | char *buf) | |
1da177e4 LT |
598 | { |
599 | struct lm87_data *data = lm87_update_device(dev); | |
600 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); | |
601 | } | |
602 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); | |
603 | ||
c6370dbe GR |
604 | static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, |
605 | char *buf) | |
1da177e4 | 606 | { |
90d6619a | 607 | struct lm87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
608 | return sprintf(buf, "%d\n", data->vrm); |
609 | } | |
c6370dbe GR |
610 | static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, |
611 | const char *buf, size_t count) | |
1da177e4 | 612 | { |
8f74efe8 | 613 | struct lm87_data *data = dev_get_drvdata(dev); |
c6370dbe GR |
614 | unsigned long val; |
615 | int err; | |
616 | ||
617 | err = kstrtoul(buf, 10, &val); | |
618 | if (err) | |
619 | return err; | |
fa642d9d AL |
620 | |
621 | if (val > 255) | |
622 | return -EINVAL; | |
623 | ||
c6370dbe | 624 | data->vrm = val; |
1da177e4 LT |
625 | return count; |
626 | } | |
627 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); | |
628 | ||
c6370dbe GR |
629 | static ssize_t show_aout(struct device *dev, struct device_attribute *attr, |
630 | char *buf) | |
1da177e4 LT |
631 | { |
632 | struct lm87_data *data = lm87_update_device(dev); | |
633 | return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); | |
634 | } | |
c6370dbe GR |
635 | static ssize_t set_aout(struct device *dev, struct device_attribute *attr, |
636 | const char *buf, size_t count) | |
1da177e4 LT |
637 | { |
638 | struct i2c_client *client = to_i2c_client(dev); | |
639 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
640 | long val; |
641 | int err; | |
642 | ||
643 | err = kstrtol(buf, 10, &val); | |
644 | if (err) | |
645 | return err; | |
1da177e4 | 646 | |
9a61bf63 | 647 | mutex_lock(&data->update_lock); |
1da177e4 LT |
648 | data->aout = AOUT_TO_REG(val); |
649 | lm87_write_value(client, LM87_REG_AOUT, data->aout); | |
9a61bf63 | 650 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
651 | return count; |
652 | } | |
653 | static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout); | |
654 | ||
c2803b98 JD |
655 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
656 | char *buf) | |
657 | { | |
658 | struct lm87_data *data = lm87_update_device(dev); | |
659 | int bitnr = to_sensor_dev_attr(attr)->index; | |
660 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
661 | } | |
662 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); | |
663 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); | |
664 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); | |
665 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
666 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); | |
667 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); | |
668 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); | |
669 | static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7); | |
670 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
671 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); | |
672 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5); | |
673 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); | |
674 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); | |
675 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14); | |
676 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); | |
677 | ||
1da177e4 LT |
678 | /* |
679 | * Real code | |
680 | */ | |
681 | ||
0501a381 | 682 | static struct attribute *lm87_attributes[] = { |
0e190b7f JD |
683 | &sensor_dev_attr_in1_input.dev_attr.attr, |
684 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
685 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
c2803b98 | 686 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
0e190b7f JD |
687 | &sensor_dev_attr_in2_input.dev_attr.attr, |
688 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
689 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
c2803b98 | 690 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
0e190b7f JD |
691 | &sensor_dev_attr_in3_input.dev_attr.attr, |
692 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
693 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
c2803b98 | 694 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
0e190b7f JD |
695 | &sensor_dev_attr_in4_input.dev_attr.attr, |
696 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
697 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
c2803b98 | 698 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
0501a381 | 699 | |
0e190b7f JD |
700 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
701 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
702 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
0501a381 | 703 | &dev_attr_temp1_crit.attr, |
c2803b98 | 704 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
0e190b7f JD |
705 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
706 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
707 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
0501a381 | 708 | &dev_attr_temp2_crit.attr, |
c2803b98 JD |
709 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
710 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
0501a381 MH |
711 | |
712 | &dev_attr_alarms.attr, | |
713 | &dev_attr_aout_output.attr, | |
714 | ||
715 | NULL | |
716 | }; | |
717 | ||
718 | static const struct attribute_group lm87_group = { | |
719 | .attrs = lm87_attributes, | |
720 | }; | |
721 | ||
073f1e6c | 722 | static struct attribute *lm87_attributes_in6[] = { |
0e190b7f JD |
723 | &sensor_dev_attr_in6_input.dev_attr.attr, |
724 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
725 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
c2803b98 | 726 | &sensor_dev_attr_in6_alarm.dev_attr.attr, |
073f1e6c GR |
727 | NULL |
728 | }; | |
729 | ||
730 | static const struct attribute_group lm87_group_in6 = { | |
731 | .attrs = lm87_attributes_in6, | |
732 | }; | |
0501a381 | 733 | |
073f1e6c | 734 | static struct attribute *lm87_attributes_fan1[] = { |
0e190b7f JD |
735 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
736 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
737 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
c2803b98 | 738 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
073f1e6c GR |
739 | NULL |
740 | }; | |
741 | ||
742 | static const struct attribute_group lm87_group_fan1 = { | |
743 | .attrs = lm87_attributes_fan1, | |
744 | }; | |
0501a381 | 745 | |
073f1e6c | 746 | static struct attribute *lm87_attributes_in7[] = { |
0e190b7f JD |
747 | &sensor_dev_attr_in7_input.dev_attr.attr, |
748 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
749 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
c2803b98 | 750 | &sensor_dev_attr_in7_alarm.dev_attr.attr, |
073f1e6c GR |
751 | NULL |
752 | }; | |
0501a381 | 753 | |
073f1e6c GR |
754 | static const struct attribute_group lm87_group_in7 = { |
755 | .attrs = lm87_attributes_in7, | |
756 | }; | |
757 | ||
758 | static struct attribute *lm87_attributes_fan2[] = { | |
0e190b7f JD |
759 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
760 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
761 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
c2803b98 | 762 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
073f1e6c GR |
763 | NULL |
764 | }; | |
0501a381 | 765 | |
073f1e6c GR |
766 | static const struct attribute_group lm87_group_fan2 = { |
767 | .attrs = lm87_attributes_fan2, | |
768 | }; | |
769 | ||
770 | static struct attribute *lm87_attributes_temp3[] = { | |
0e190b7f JD |
771 | &sensor_dev_attr_temp3_input.dev_attr.attr, |
772 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
773 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
0501a381 | 774 | &dev_attr_temp3_crit.attr, |
c2803b98 JD |
775 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
776 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
073f1e6c GR |
777 | NULL |
778 | }; | |
0501a381 | 779 | |
073f1e6c GR |
780 | static const struct attribute_group lm87_group_temp3 = { |
781 | .attrs = lm87_attributes_temp3, | |
782 | }; | |
783 | ||
784 | static struct attribute *lm87_attributes_in0_5[] = { | |
0e190b7f JD |
785 | &sensor_dev_attr_in0_input.dev_attr.attr, |
786 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
787 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
c2803b98 | 788 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
0e190b7f JD |
789 | &sensor_dev_attr_in5_input.dev_attr.attr, |
790 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
791 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
c2803b98 | 792 | &sensor_dev_attr_in5_alarm.dev_attr.attr, |
073f1e6c GR |
793 | NULL |
794 | }; | |
795 | ||
796 | static const struct attribute_group lm87_group_in0_5 = { | |
797 | .attrs = lm87_attributes_in0_5, | |
798 | }; | |
0501a381 | 799 | |
073f1e6c | 800 | static struct attribute *lm87_attributes_vid[] = { |
0501a381 MH |
801 | &dev_attr_cpu0_vid.attr, |
802 | &dev_attr_vrm.attr, | |
0501a381 MH |
803 | NULL |
804 | }; | |
805 | ||
073f1e6c GR |
806 | static const struct attribute_group lm87_group_vid = { |
807 | .attrs = lm87_attributes_vid, | |
0501a381 MH |
808 | }; |
809 | ||
a888420a | 810 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
8652a264 | 811 | static int lm87_detect(struct i2c_client *client, struct i2c_board_info *info) |
1da177e4 | 812 | { |
8652a264 | 813 | struct i2c_adapter *adapter = client->adapter; |
52df6440 JD |
814 | const char *name; |
815 | u8 cid, rev; | |
1da177e4 LT |
816 | |
817 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
a888420a | 818 | return -ENODEV; |
1da177e4 | 819 | |
8652a264 | 820 | if (lm87_read_value(client, LM87_REG_CONFIG) & 0x80) |
52df6440 | 821 | return -ENODEV; |
1da177e4 LT |
822 | |
823 | /* Now, we do the remaining detection. */ | |
8652a264 JD |
824 | cid = lm87_read_value(client, LM87_REG_COMPANY_ID); |
825 | rev = lm87_read_value(client, LM87_REG_REVISION); | |
52df6440 JD |
826 | |
827 | if (cid == 0x02 /* National Semiconductor */ | |
828 | && (rev >= 0x01 && rev <= 0x08)) | |
829 | name = "lm87"; | |
830 | else if (cid == 0x41 /* Analog Devices */ | |
831 | && (rev & 0xf0) == 0x10) | |
832 | name = "adm1024"; | |
833 | else { | |
834 | dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n", | |
8652a264 | 835 | client->addr); |
52df6440 | 836 | return -ENODEV; |
1da177e4 LT |
837 | } |
838 | ||
52df6440 | 839 | strlcpy(info->type, name, I2C_NAME_SIZE); |
a888420a JD |
840 | |
841 | return 0; | |
842 | } | |
843 | ||
073f1e6c GR |
844 | static void lm87_remove_files(struct i2c_client *client) |
845 | { | |
846 | struct device *dev = &client->dev; | |
847 | ||
848 | sysfs_remove_group(&dev->kobj, &lm87_group); | |
849 | sysfs_remove_group(&dev->kobj, &lm87_group_in6); | |
850 | sysfs_remove_group(&dev->kobj, &lm87_group_fan1); | |
851 | sysfs_remove_group(&dev->kobj, &lm87_group_in7); | |
852 | sysfs_remove_group(&dev->kobj, &lm87_group_fan2); | |
853 | sysfs_remove_group(&dev->kobj, &lm87_group_temp3); | |
854 | sysfs_remove_group(&dev->kobj, &lm87_group_in0_5); | |
855 | sysfs_remove_group(&dev->kobj, &lm87_group_vid); | |
856 | } | |
857 | ||
8652a264 JD |
858 | static void lm87_init_client(struct i2c_client *client) |
859 | { | |
860 | struct lm87_data *data = i2c_get_clientdata(client); | |
861 | ||
a8b3a3a5 JH |
862 | if (dev_get_platdata(&client->dev)) { |
863 | data->channel = *(u8 *)dev_get_platdata(&client->dev); | |
8652a264 JD |
864 | lm87_write_value(client, |
865 | LM87_REG_CHANNEL_MODE, data->channel); | |
866 | } else { | |
867 | data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); | |
868 | } | |
869 | data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F; | |
870 | ||
871 | if (!(data->config & 0x01)) { | |
872 | int i; | |
873 | ||
874 | /* Limits are left uninitialized after power-up */ | |
875 | for (i = 1; i < 6; i++) { | |
876 | lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); | |
877 | lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); | |
878 | } | |
879 | for (i = 0; i < 2; i++) { | |
880 | lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); | |
881 | lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); | |
882 | lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); | |
883 | lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); | |
884 | } | |
885 | if (data->channel & CHAN_TEMP3) { | |
886 | lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); | |
887 | lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); | |
888 | } else { | |
889 | lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); | |
890 | lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); | |
891 | } | |
892 | } | |
893 | ||
894 | /* Make sure Start is set and INT#_Clear is clear */ | |
895 | if ((data->config & 0x09) != 0x01) | |
896 | lm87_write_value(client, LM87_REG_CONFIG, | |
897 | (data->config & 0x77) | 0x01); | |
898 | } | |
899 | ||
900 | static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id) | |
a888420a JD |
901 | { |
902 | struct lm87_data *data; | |
903 | int err; | |
904 | ||
5ff512b4 GR |
905 | data = devm_kzalloc(&client->dev, sizeof(struct lm87_data), GFP_KERNEL); |
906 | if (!data) | |
907 | return -ENOMEM; | |
a888420a | 908 | |
8652a264 | 909 | i2c_set_clientdata(client, data); |
9a61bf63 | 910 | mutex_init(&data->update_lock); |
1da177e4 | 911 | |
1da177e4 | 912 | /* Initialize the LM87 chip */ |
8652a264 | 913 | lm87_init_client(client); |
1da177e4 LT |
914 | |
915 | data->in_scale[0] = 2500; | |
916 | data->in_scale[1] = 2700; | |
917 | data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; | |
918 | data->in_scale[3] = 5000; | |
919 | data->in_scale[4] = 12000; | |
920 | data->in_scale[5] = 2700; | |
921 | data->in_scale[6] = 1875; | |
922 | data->in_scale[7] = 1875; | |
923 | ||
924 | /* Register sysfs hooks */ | |
8652a264 | 925 | err = sysfs_create_group(&client->dev.kobj, &lm87_group); |
c6370dbe | 926 | if (err) |
5ff512b4 | 927 | goto exit_stop; |
1da177e4 LT |
928 | |
929 | if (data->channel & CHAN_NO_FAN(0)) { | |
8652a264 | 930 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_in6); |
073f1e6c | 931 | if (err) |
0501a381 | 932 | goto exit_remove; |
1da177e4 | 933 | } else { |
8652a264 | 934 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_fan1); |
073f1e6c | 935 | if (err) |
0501a381 | 936 | goto exit_remove; |
1da177e4 | 937 | } |
0501a381 | 938 | |
1da177e4 | 939 | if (data->channel & CHAN_NO_FAN(1)) { |
8652a264 | 940 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_in7); |
073f1e6c | 941 | if (err) |
0501a381 | 942 | goto exit_remove; |
1da177e4 | 943 | } else { |
8652a264 | 944 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_fan2); |
073f1e6c | 945 | if (err) |
0501a381 | 946 | goto exit_remove; |
1da177e4 LT |
947 | } |
948 | ||
1da177e4 | 949 | if (data->channel & CHAN_TEMP3) { |
8652a264 | 950 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_temp3); |
073f1e6c | 951 | if (err) |
0501a381 | 952 | goto exit_remove; |
1da177e4 | 953 | } else { |
8652a264 | 954 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_in0_5); |
073f1e6c | 955 | if (err) |
0501a381 | 956 | goto exit_remove; |
1da177e4 LT |
957 | } |
958 | ||
959 | if (!(data->channel & CHAN_NO_VID)) { | |
8a665a05 | 960 | data->vrm = vid_which_vrm(); |
8652a264 | 961 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_vid); |
073f1e6c | 962 | if (err) |
0501a381 | 963 | goto exit_remove; |
1da177e4 LT |
964 | } |
965 | ||
8652a264 | 966 | data->hwmon_dev = hwmon_device_register(&client->dev); |
1beeffe4 TJ |
967 | if (IS_ERR(data->hwmon_dev)) { |
968 | err = PTR_ERR(data->hwmon_dev); | |
0501a381 MH |
969 | goto exit_remove; |
970 | } | |
1da177e4 LT |
971 | |
972 | return 0; | |
973 | ||
0501a381 | 974 | exit_remove: |
8652a264 | 975 | lm87_remove_files(client); |
5ff512b4 | 976 | exit_stop: |
8652a264 | 977 | lm87_write_value(client, LM87_REG_CONFIG, data->config); |
1da177e4 LT |
978 | return err; |
979 | } | |
980 | ||
a888420a | 981 | static int lm87_remove(struct i2c_client *client) |
1da177e4 | 982 | { |
943b0830 | 983 | struct lm87_data *data = i2c_get_clientdata(client); |
1da177e4 | 984 | |
1beeffe4 | 985 | hwmon_device_unregister(data->hwmon_dev); |
073f1e6c | 986 | lm87_remove_files(client); |
943b0830 | 987 | |
d2cac802 | 988 | lm87_write_value(client, LM87_REG_CONFIG, data->config); |
1da177e4 LT |
989 | return 0; |
990 | } | |
991 | ||
8652a264 JD |
992 | /* |
993 | * Driver data (common to all clients) | |
994 | */ | |
1da177e4 | 995 | |
8652a264 JD |
996 | static const struct i2c_device_id lm87_id[] = { |
997 | { "lm87", lm87 }, | |
998 | { "adm1024", adm1024 }, | |
999 | { } | |
1000 | }; | |
1001 | MODULE_DEVICE_TABLE(i2c, lm87_id); | |
1da177e4 | 1002 | |
8652a264 JD |
1003 | static struct i2c_driver lm87_driver = { |
1004 | .class = I2C_CLASS_HWMON, | |
1005 | .driver = { | |
1006 | .name = "lm87", | |
1007 | }, | |
1008 | .probe = lm87_probe, | |
1009 | .remove = lm87_remove, | |
1010 | .id_table = lm87_id, | |
1011 | .detect = lm87_detect, | |
1012 | .address_list = normal_i2c, | |
1013 | }; | |
1da177e4 | 1014 | |
f0967eea | 1015 | module_i2c_driver(lm87_driver); |
1da177e4 | 1016 | |
7c81c60f | 1017 | MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de> and others"); |
1da177e4 LT |
1018 | MODULE_DESCRIPTION("LM87 driver"); |
1019 | MODULE_LICENSE("GPL"); |