Commit | Line | Data |
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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> | |
a888420a | 8 | * Copyright (C) 2004-2008 Jean Delvare <khali@linux-fr.org> |
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 LT |
151 | |
152 | /* | |
153 | * Functions declaration | |
154 | */ | |
155 | ||
a888420a JD |
156 | static int lm87_probe(struct i2c_client *client, |
157 | const struct i2c_device_id *id); | |
310ec792 | 158 | static int lm87_detect(struct i2c_client *new_client, |
a888420a | 159 | struct i2c_board_info *info); |
1da177e4 | 160 | static void lm87_init_client(struct i2c_client *client); |
a888420a | 161 | static int lm87_remove(struct i2c_client *client); |
1da177e4 LT |
162 | static struct lm87_data *lm87_update_device(struct device *dev); |
163 | ||
164 | /* | |
165 | * Driver data (common to all clients) | |
166 | */ | |
167 | ||
a888420a JD |
168 | static const struct i2c_device_id lm87_id[] = { |
169 | { "lm87", lm87 }, | |
170 | { "adm1024", adm1024 }, | |
171 | { } | |
172 | }; | |
173 | MODULE_DEVICE_TABLE(i2c, lm87_id); | |
174 | ||
1da177e4 | 175 | static struct i2c_driver lm87_driver = { |
a888420a | 176 | .class = I2C_CLASS_HWMON, |
cdaf7934 | 177 | .driver = { |
cdaf7934 LR |
178 | .name = "lm87", |
179 | }, | |
a888420a JD |
180 | .probe = lm87_probe, |
181 | .remove = lm87_remove, | |
182 | .id_table = lm87_id, | |
183 | .detect = lm87_detect, | |
c3813d6a | 184 | .address_list = normal_i2c, |
1da177e4 LT |
185 | }; |
186 | ||
187 | /* | |
188 | * Client data (each client gets its own) | |
189 | */ | |
190 | ||
191 | struct lm87_data { | |
1beeffe4 | 192 | struct device *hwmon_dev; |
9a61bf63 | 193 | struct mutex update_lock; |
1da177e4 LT |
194 | char valid; /* zero until following fields are valid */ |
195 | unsigned long last_updated; /* In jiffies */ | |
196 | ||
197 | u8 channel; /* register value */ | |
d2cac802 | 198 | u8 config; /* original register value */ |
1da177e4 LT |
199 | |
200 | u8 in[8]; /* register value */ | |
201 | u8 in_max[8]; /* register value */ | |
202 | u8 in_min[8]; /* register value */ | |
203 | u16 in_scale[8]; | |
204 | ||
205 | s8 temp[3]; /* register value */ | |
206 | s8 temp_high[3]; /* register value */ | |
207 | s8 temp_low[3]; /* register value */ | |
208 | s8 temp_crit_int; /* min of two register values */ | |
209 | s8 temp_crit_ext; /* min of two register values */ | |
210 | ||
211 | u8 fan[2]; /* register value */ | |
212 | u8 fan_min[2]; /* register value */ | |
213 | u8 fan_div[2]; /* register value, shifted right */ | |
214 | u8 aout; /* register value */ | |
215 | ||
216 | u16 alarms; /* register values, combined */ | |
217 | u8 vid; /* register values, combined */ | |
218 | u8 vrm; | |
219 | }; | |
220 | ||
221 | /* | |
222 | * Sysfs stuff | |
223 | */ | |
224 | ||
225 | static inline int lm87_read_value(struct i2c_client *client, u8 reg) | |
226 | { | |
227 | return i2c_smbus_read_byte_data(client, reg); | |
228 | } | |
229 | ||
230 | static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) | |
231 | { | |
232 | return i2c_smbus_write_byte_data(client, reg, value); | |
233 | } | |
234 | ||
235 | #define show_in(offset) \ | |
c6370dbe GR |
236 | static ssize_t show_in##offset##_input(struct device *dev, \ |
237 | struct device_attribute *attr, \ | |
238 | char *buf) \ | |
1da177e4 LT |
239 | { \ |
240 | struct lm87_data *data = lm87_update_device(dev); \ | |
241 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \ | |
242 | data->in_scale[offset])); \ | |
243 | } \ | |
c6370dbe GR |
244 | static ssize_t show_in##offset##_min(struct device *dev, \ |
245 | struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
246 | { \ |
247 | struct lm87_data *data = lm87_update_device(dev); \ | |
248 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \ | |
249 | data->in_scale[offset])); \ | |
250 | } \ | |
c6370dbe GR |
251 | static ssize_t show_in##offset##_max(struct device *dev, \ |
252 | struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
253 | { \ |
254 | struct lm87_data *data = lm87_update_device(dev); \ | |
255 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \ | |
256 | data->in_scale[offset])); \ | |
257 | } \ | |
258 | static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ | |
259 | show_in##offset##_input, NULL); | |
260 | show_in(0); | |
261 | show_in(1); | |
262 | show_in(2); | |
263 | show_in(3); | |
264 | show_in(4); | |
265 | show_in(5); | |
266 | show_in(6); | |
267 | show_in(7); | |
268 | ||
c6370dbe GR |
269 | static ssize_t set_in_min(struct device *dev, const char *buf, int nr, |
270 | size_t count) | |
1da177e4 LT |
271 | { |
272 | struct i2c_client *client = to_i2c_client(dev); | |
273 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
274 | long val; |
275 | int err; | |
276 | ||
277 | err = kstrtol(buf, 10, &val); | |
278 | if (err) | |
279 | return err; | |
1da177e4 | 280 | |
9a61bf63 | 281 | mutex_lock(&data->update_lock); |
1da177e4 | 282 | data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); |
c6370dbe GR |
283 | lm87_write_value(client, nr < 6 ? LM87_REG_IN_MIN(nr) : |
284 | LM87_REG_AIN_MIN(nr - 6), data->in_min[nr]); | |
9a61bf63 | 285 | mutex_unlock(&data->update_lock); |
c6370dbe | 286 | return count; |
1da177e4 LT |
287 | } |
288 | ||
c6370dbe GR |
289 | static ssize_t set_in_max(struct device *dev, const char *buf, int nr, |
290 | size_t count) | |
1da177e4 LT |
291 | { |
292 | struct i2c_client *client = to_i2c_client(dev); | |
293 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
294 | long val; |
295 | int err; | |
296 | ||
297 | err = kstrtol(buf, 10, &val); | |
298 | if (err) | |
299 | return err; | |
1da177e4 | 300 | |
9a61bf63 | 301 | mutex_lock(&data->update_lock); |
1da177e4 | 302 | data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); |
c6370dbe GR |
303 | lm87_write_value(client, nr < 6 ? LM87_REG_IN_MAX(nr) : |
304 | LM87_REG_AIN_MAX(nr - 6), data->in_max[nr]); | |
9a61bf63 | 305 | mutex_unlock(&data->update_lock); |
c6370dbe | 306 | return count; |
1da177e4 LT |
307 | } |
308 | ||
309 | #define set_in(offset) \ | |
c6370dbe GR |
310 | static ssize_t set_in##offset##_min(struct device *dev, \ |
311 | struct device_attribute *attr, \ | |
312 | const char *buf, size_t count) \ | |
1da177e4 | 313 | { \ |
c6370dbe | 314 | return set_in_min(dev, buf, offset, count); \ |
1da177e4 | 315 | } \ |
c6370dbe GR |
316 | static ssize_t set_in##offset##_max(struct device *dev, \ |
317 | struct device_attribute *attr, \ | |
318 | const char *buf, size_t count) \ | |
1da177e4 | 319 | { \ |
c6370dbe | 320 | return set_in_max(dev, buf, offset, count); \ |
1da177e4 LT |
321 | } \ |
322 | static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
323 | show_in##offset##_min, set_in##offset##_min); \ | |
324 | static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
325 | show_in##offset##_max, set_in##offset##_max); | |
326 | set_in(0); | |
327 | set_in(1); | |
328 | set_in(2); | |
329 | set_in(3); | |
330 | set_in(4); | |
331 | set_in(5); | |
332 | set_in(6); | |
333 | set_in(7); | |
334 | ||
335 | #define show_temp(offset) \ | |
c6370dbe GR |
336 | static ssize_t show_temp##offset##_input(struct device *dev, \ |
337 | struct device_attribute *attr, \ | |
338 | char *buf) \ | |
1da177e4 LT |
339 | { \ |
340 | struct lm87_data *data = lm87_update_device(dev); \ | |
c6370dbe | 341 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset - 1])); \ |
1da177e4 | 342 | } \ |
c6370dbe GR |
343 | static ssize_t show_temp##offset##_low(struct device *dev, \ |
344 | struct device_attribute *attr, \ | |
345 | char *buf) \ | |
1da177e4 LT |
346 | { \ |
347 | struct lm87_data *data = lm87_update_device(dev); \ | |
c6370dbe GR |
348 | return sprintf(buf, "%d\n", \ |
349 | TEMP_FROM_REG(data->temp_low[offset - 1])); \ | |
1da177e4 | 350 | } \ |
c6370dbe GR |
351 | static ssize_t show_temp##offset##_high(struct device *dev, \ |
352 | struct device_attribute *attr, \ | |
353 | char *buf) \ | |
1da177e4 LT |
354 | { \ |
355 | struct lm87_data *data = lm87_update_device(dev); \ | |
c6370dbe GR |
356 | return sprintf(buf, "%d\n", \ |
357 | TEMP_FROM_REG(data->temp_high[offset - 1])); \ | |
358 | } \ | |
1da177e4 LT |
359 | static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
360 | show_temp##offset##_input, NULL); | |
361 | show_temp(1); | |
362 | show_temp(2); | |
363 | show_temp(3); | |
364 | ||
c6370dbe GR |
365 | static ssize_t set_temp_low(struct device *dev, const char *buf, int nr, |
366 | size_t count) | |
1da177e4 LT |
367 | { |
368 | struct i2c_client *client = to_i2c_client(dev); | |
369 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
370 | long val; |
371 | int err; | |
372 | ||
373 | err = kstrtol(buf, 10, &val); | |
374 | if (err) | |
375 | return err; | |
1da177e4 | 376 | |
9a61bf63 | 377 | mutex_lock(&data->update_lock); |
1da177e4 LT |
378 | data->temp_low[nr] = TEMP_TO_REG(val); |
379 | lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); | |
9a61bf63 | 380 | mutex_unlock(&data->update_lock); |
c6370dbe | 381 | return count; |
1da177e4 LT |
382 | } |
383 | ||
c6370dbe GR |
384 | static ssize_t set_temp_high(struct device *dev, const char *buf, int nr, |
385 | size_t count) | |
1da177e4 LT |
386 | { |
387 | struct i2c_client *client = to_i2c_client(dev); | |
388 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
389 | long val; |
390 | int err; | |
391 | ||
392 | err = kstrtol(buf, 10, &val); | |
393 | if (err) | |
394 | return err; | |
1da177e4 | 395 | |
9a61bf63 | 396 | mutex_lock(&data->update_lock); |
1da177e4 LT |
397 | data->temp_high[nr] = TEMP_TO_REG(val); |
398 | lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); | |
9a61bf63 | 399 | mutex_unlock(&data->update_lock); |
c6370dbe | 400 | return count; |
1da177e4 LT |
401 | } |
402 | ||
403 | #define set_temp(offset) \ | |
c6370dbe GR |
404 | static ssize_t set_temp##offset##_low(struct device *dev, \ |
405 | struct device_attribute *attr, \ | |
406 | const char *buf, size_t count) \ | |
1da177e4 | 407 | { \ |
c6370dbe | 408 | return set_temp_low(dev, buf, offset - 1, count); \ |
1da177e4 | 409 | } \ |
c6370dbe GR |
410 | static ssize_t set_temp##offset##_high(struct device *dev, \ |
411 | struct device_attribute *attr, \ | |
412 | const char *buf, size_t count) \ | |
1da177e4 | 413 | { \ |
c6370dbe | 414 | return set_temp_high(dev, buf, offset - 1, count); \ |
1da177e4 LT |
415 | } \ |
416 | static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
417 | show_temp##offset##_high, set_temp##offset##_high); \ | |
418 | static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
419 | show_temp##offset##_low, set_temp##offset##_low); | |
420 | set_temp(1); | |
421 | set_temp(2); | |
422 | set_temp(3); | |
423 | ||
c6370dbe GR |
424 | static ssize_t show_temp_crit_int(struct device *dev, |
425 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
426 | { |
427 | struct lm87_data *data = lm87_update_device(dev); | |
428 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); | |
429 | } | |
430 | ||
c6370dbe GR |
431 | static ssize_t show_temp_crit_ext(struct device *dev, |
432 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
433 | { |
434 | struct lm87_data *data = lm87_update_device(dev); | |
435 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); | |
436 | } | |
437 | ||
438 | static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit_int, NULL); | |
439 | static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit_ext, NULL); | |
440 | static DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit_ext, NULL); | |
441 | ||
442 | #define show_fan(offset) \ | |
c6370dbe GR |
443 | static ssize_t show_fan##offset##_input(struct device *dev, \ |
444 | struct device_attribute *attr, \ | |
445 | char *buf) \ | |
1da177e4 LT |
446 | { \ |
447 | struct lm87_data *data = lm87_update_device(dev); \ | |
c6370dbe GR |
448 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[offset - 1], \ |
449 | FAN_DIV_FROM_REG(data->fan_div[offset - 1]))); \ | |
1da177e4 | 450 | } \ |
c6370dbe GR |
451 | static ssize_t show_fan##offset##_min(struct device *dev, \ |
452 | struct device_attribute *attr, \ | |
453 | char *buf) \ | |
1da177e4 LT |
454 | { \ |
455 | struct lm87_data *data = lm87_update_device(dev); \ | |
c6370dbe GR |
456 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[offset - 1], \ |
457 | FAN_DIV_FROM_REG(data->fan_div[offset - 1]))); \ | |
1da177e4 | 458 | } \ |
c6370dbe GR |
459 | static ssize_t show_fan##offset##_div(struct device *dev, \ |
460 | struct device_attribute *attr, \ | |
461 | char *buf) \ | |
1da177e4 LT |
462 | { \ |
463 | struct lm87_data *data = lm87_update_device(dev); \ | |
c6370dbe GR |
464 | return sprintf(buf, "%d\n", \ |
465 | FAN_DIV_FROM_REG(data->fan_div[offset - 1])); \ | |
1da177e4 LT |
466 | } \ |
467 | static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
468 | show_fan##offset##_input, NULL); | |
469 | show_fan(1); | |
470 | show_fan(2); | |
471 | ||
c6370dbe GR |
472 | static ssize_t set_fan_min(struct device *dev, const char *buf, int nr, |
473 | size_t count) | |
1da177e4 LT |
474 | { |
475 | struct i2c_client *client = to_i2c_client(dev); | |
476 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
477 | long val; |
478 | int err; | |
479 | ||
480 | err = kstrtol(buf, 10, &val); | |
481 | if (err) | |
482 | return err; | |
1da177e4 | 483 | |
9a61bf63 | 484 | mutex_lock(&data->update_lock); |
1da177e4 LT |
485 | data->fan_min[nr] = FAN_TO_REG(val, |
486 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
487 | lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 488 | mutex_unlock(&data->update_lock); |
c6370dbe | 489 | return count; |
1da177e4 LT |
490 | } |
491 | ||
c6370dbe GR |
492 | /* |
493 | * Note: we save and restore the fan minimum here, because its value is | |
494 | * determined in part by the fan clock divider. This follows the principle | |
495 | * of least surprise; the user doesn't expect the fan minimum to change just | |
496 | * because the divider changed. | |
497 | */ | |
1da177e4 LT |
498 | static ssize_t set_fan_div(struct device *dev, const char *buf, |
499 | size_t count, int nr) | |
500 | { | |
501 | struct i2c_client *client = to_i2c_client(dev); | |
502 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
503 | long val; |
504 | int err; | |
1da177e4 LT |
505 | unsigned long min; |
506 | u8 reg; | |
507 | ||
c6370dbe GR |
508 | err = kstrtol(buf, 10, &val); |
509 | if (err) | |
510 | return err; | |
511 | ||
9a61bf63 | 512 | mutex_lock(&data->update_lock); |
1da177e4 LT |
513 | min = FAN_FROM_REG(data->fan_min[nr], |
514 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
515 | ||
516 | switch (val) { | |
c6370dbe GR |
517 | case 1: |
518 | data->fan_div[nr] = 0; | |
519 | break; | |
520 | case 2: | |
521 | data->fan_div[nr] = 1; | |
522 | break; | |
523 | case 4: | |
524 | data->fan_div[nr] = 2; | |
525 | break; | |
526 | case 8: | |
527 | data->fan_div[nr] = 3; | |
528 | break; | |
1da177e4 | 529 | default: |
9a61bf63 | 530 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
531 | return -EINVAL; |
532 | } | |
533 | ||
534 | reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); | |
535 | switch (nr) { | |
536 | case 0: | |
537 | reg = (reg & 0xCF) | (data->fan_div[0] << 4); | |
538 | break; | |
539 | case 1: | |
540 | reg = (reg & 0x3F) | (data->fan_div[1] << 6); | |
541 | break; | |
542 | } | |
543 | lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); | |
544 | ||
545 | data->fan_min[nr] = FAN_TO_REG(min, val); | |
546 | lm87_write_value(client, LM87_REG_FAN_MIN(nr), | |
547 | data->fan_min[nr]); | |
9a61bf63 | 548 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
549 | |
550 | return count; | |
551 | } | |
552 | ||
553 | #define set_fan(offset) \ | |
c6370dbe GR |
554 | static ssize_t set_fan##offset##_min(struct device *dev, \ |
555 | struct device_attribute *attr, \ | |
556 | const char *buf, size_t count) \ | |
1da177e4 | 557 | { \ |
c6370dbe | 558 | return set_fan_min(dev, buf, offset - 1, count); \ |
1da177e4 | 559 | } \ |
c6370dbe GR |
560 | static ssize_t set_fan##offset##_div(struct device *dev, \ |
561 | struct device_attribute *attr, \ | |
562 | const char *buf, size_t count) \ | |
1da177e4 | 563 | { \ |
c6370dbe | 564 | return set_fan_div(dev, buf, count, offset - 1); \ |
1da177e4 LT |
565 | } \ |
566 | static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
567 | show_fan##offset##_min, set_fan##offset##_min); \ | |
568 | static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
569 | show_fan##offset##_div, set_fan##offset##_div); | |
570 | set_fan(1); | |
571 | set_fan(2); | |
572 | ||
c6370dbe GR |
573 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, |
574 | char *buf) | |
1da177e4 LT |
575 | { |
576 | struct lm87_data *data = lm87_update_device(dev); | |
577 | return sprintf(buf, "%d\n", data->alarms); | |
578 | } | |
579 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
580 | ||
c6370dbe GR |
581 | static ssize_t show_vid(struct device *dev, struct device_attribute *attr, |
582 | char *buf) | |
1da177e4 LT |
583 | { |
584 | struct lm87_data *data = lm87_update_device(dev); | |
585 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); | |
586 | } | |
587 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); | |
588 | ||
c6370dbe GR |
589 | static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, |
590 | char *buf) | |
1da177e4 | 591 | { |
90d6619a | 592 | struct lm87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
593 | return sprintf(buf, "%d\n", data->vrm); |
594 | } | |
c6370dbe GR |
595 | static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, |
596 | const char *buf, size_t count) | |
1da177e4 | 597 | { |
8f74efe8 | 598 | struct lm87_data *data = dev_get_drvdata(dev); |
c6370dbe GR |
599 | unsigned long val; |
600 | int err; | |
601 | ||
602 | err = kstrtoul(buf, 10, &val); | |
603 | if (err) | |
604 | return err; | |
605 | data->vrm = val; | |
1da177e4 LT |
606 | return count; |
607 | } | |
608 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); | |
609 | ||
c6370dbe GR |
610 | static ssize_t show_aout(struct device *dev, struct device_attribute *attr, |
611 | char *buf) | |
1da177e4 LT |
612 | { |
613 | struct lm87_data *data = lm87_update_device(dev); | |
614 | return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); | |
615 | } | |
c6370dbe GR |
616 | static ssize_t set_aout(struct device *dev, struct device_attribute *attr, |
617 | const char *buf, size_t count) | |
1da177e4 LT |
618 | { |
619 | struct i2c_client *client = to_i2c_client(dev); | |
620 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
621 | long val; |
622 | int err; | |
623 | ||
624 | err = kstrtol(buf, 10, &val); | |
625 | if (err) | |
626 | return err; | |
1da177e4 | 627 | |
9a61bf63 | 628 | mutex_lock(&data->update_lock); |
1da177e4 LT |
629 | data->aout = AOUT_TO_REG(val); |
630 | lm87_write_value(client, LM87_REG_AOUT, data->aout); | |
9a61bf63 | 631 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
632 | return count; |
633 | } | |
634 | static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout); | |
635 | ||
c2803b98 JD |
636 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
637 | char *buf) | |
638 | { | |
639 | struct lm87_data *data = lm87_update_device(dev); | |
640 | int bitnr = to_sensor_dev_attr(attr)->index; | |
641 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
642 | } | |
643 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); | |
644 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); | |
645 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); | |
646 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
647 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); | |
648 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); | |
649 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); | |
650 | static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7); | |
651 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
652 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); | |
653 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5); | |
654 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); | |
655 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); | |
656 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14); | |
657 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); | |
658 | ||
1da177e4 LT |
659 | /* |
660 | * Real code | |
661 | */ | |
662 | ||
0501a381 MH |
663 | static struct attribute *lm87_attributes[] = { |
664 | &dev_attr_in1_input.attr, | |
665 | &dev_attr_in1_min.attr, | |
666 | &dev_attr_in1_max.attr, | |
c2803b98 | 667 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
0501a381 MH |
668 | &dev_attr_in2_input.attr, |
669 | &dev_attr_in2_min.attr, | |
670 | &dev_attr_in2_max.attr, | |
c2803b98 | 671 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
0501a381 MH |
672 | &dev_attr_in3_input.attr, |
673 | &dev_attr_in3_min.attr, | |
674 | &dev_attr_in3_max.attr, | |
c2803b98 | 675 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
0501a381 MH |
676 | &dev_attr_in4_input.attr, |
677 | &dev_attr_in4_min.attr, | |
678 | &dev_attr_in4_max.attr, | |
c2803b98 | 679 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
0501a381 MH |
680 | |
681 | &dev_attr_temp1_input.attr, | |
682 | &dev_attr_temp1_max.attr, | |
683 | &dev_attr_temp1_min.attr, | |
684 | &dev_attr_temp1_crit.attr, | |
c2803b98 | 685 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
0501a381 MH |
686 | &dev_attr_temp2_input.attr, |
687 | &dev_attr_temp2_max.attr, | |
688 | &dev_attr_temp2_min.attr, | |
689 | &dev_attr_temp2_crit.attr, | |
c2803b98 JD |
690 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
691 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
0501a381 MH |
692 | |
693 | &dev_attr_alarms.attr, | |
694 | &dev_attr_aout_output.attr, | |
695 | ||
696 | NULL | |
697 | }; | |
698 | ||
699 | static const struct attribute_group lm87_group = { | |
700 | .attrs = lm87_attributes, | |
701 | }; | |
702 | ||
703 | static struct attribute *lm87_attributes_opt[] = { | |
704 | &dev_attr_in6_input.attr, | |
705 | &dev_attr_in6_min.attr, | |
706 | &dev_attr_in6_max.attr, | |
c2803b98 | 707 | &sensor_dev_attr_in6_alarm.dev_attr.attr, |
0501a381 MH |
708 | |
709 | &dev_attr_fan1_input.attr, | |
710 | &dev_attr_fan1_min.attr, | |
711 | &dev_attr_fan1_div.attr, | |
c2803b98 | 712 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
0501a381 MH |
713 | |
714 | &dev_attr_in7_input.attr, | |
715 | &dev_attr_in7_min.attr, | |
716 | &dev_attr_in7_max.attr, | |
c2803b98 | 717 | &sensor_dev_attr_in7_alarm.dev_attr.attr, |
0501a381 MH |
718 | |
719 | &dev_attr_fan2_input.attr, | |
720 | &dev_attr_fan2_min.attr, | |
721 | &dev_attr_fan2_div.attr, | |
c2803b98 | 722 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
0501a381 MH |
723 | |
724 | &dev_attr_temp3_input.attr, | |
725 | &dev_attr_temp3_max.attr, | |
726 | &dev_attr_temp3_min.attr, | |
727 | &dev_attr_temp3_crit.attr, | |
c2803b98 JD |
728 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
729 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
0501a381 MH |
730 | |
731 | &dev_attr_in0_input.attr, | |
732 | &dev_attr_in0_min.attr, | |
733 | &dev_attr_in0_max.attr, | |
c2803b98 | 734 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
0501a381 MH |
735 | &dev_attr_in5_input.attr, |
736 | &dev_attr_in5_min.attr, | |
737 | &dev_attr_in5_max.attr, | |
c2803b98 | 738 | &sensor_dev_attr_in5_alarm.dev_attr.attr, |
0501a381 MH |
739 | |
740 | &dev_attr_cpu0_vid.attr, | |
741 | &dev_attr_vrm.attr, | |
742 | ||
743 | NULL | |
744 | }; | |
745 | ||
746 | static const struct attribute_group lm87_group_opt = { | |
747 | .attrs = lm87_attributes_opt, | |
748 | }; | |
749 | ||
a888420a | 750 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 751 | static int lm87_detect(struct i2c_client *new_client, |
a888420a | 752 | struct i2c_board_info *info) |
1da177e4 | 753 | { |
a888420a | 754 | struct i2c_adapter *adapter = new_client->adapter; |
52df6440 JD |
755 | const char *name; |
756 | u8 cid, rev; | |
1da177e4 LT |
757 | |
758 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
a888420a | 759 | return -ENODEV; |
1da177e4 | 760 | |
52df6440 JD |
761 | if (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80) |
762 | return -ENODEV; | |
1da177e4 LT |
763 | |
764 | /* Now, we do the remaining detection. */ | |
52df6440 JD |
765 | cid = lm87_read_value(new_client, LM87_REG_COMPANY_ID); |
766 | rev = lm87_read_value(new_client, LM87_REG_REVISION); | |
767 | ||
768 | if (cid == 0x02 /* National Semiconductor */ | |
769 | && (rev >= 0x01 && rev <= 0x08)) | |
770 | name = "lm87"; | |
771 | else if (cid == 0x41 /* Analog Devices */ | |
772 | && (rev & 0xf0) == 0x10) | |
773 | name = "adm1024"; | |
774 | else { | |
775 | dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n", | |
776 | new_client->addr); | |
777 | return -ENODEV; | |
1da177e4 LT |
778 | } |
779 | ||
52df6440 | 780 | strlcpy(info->type, name, I2C_NAME_SIZE); |
a888420a JD |
781 | |
782 | return 0; | |
783 | } | |
784 | ||
785 | static int lm87_probe(struct i2c_client *new_client, | |
786 | const struct i2c_device_id *id) | |
787 | { | |
788 | struct lm87_data *data; | |
789 | int err; | |
790 | ||
791 | data = kzalloc(sizeof(struct lm87_data), GFP_KERNEL); | |
792 | if (!data) { | |
793 | err = -ENOMEM; | |
794 | goto exit; | |
795 | } | |
796 | ||
797 | i2c_set_clientdata(new_client, data); | |
1da177e4 | 798 | data->valid = 0; |
9a61bf63 | 799 | mutex_init(&data->update_lock); |
1da177e4 | 800 | |
1da177e4 LT |
801 | /* Initialize the LM87 chip */ |
802 | lm87_init_client(new_client); | |
803 | ||
804 | data->in_scale[0] = 2500; | |
805 | data->in_scale[1] = 2700; | |
806 | data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; | |
807 | data->in_scale[3] = 5000; | |
808 | data->in_scale[4] = 12000; | |
809 | data->in_scale[5] = 2700; | |
810 | data->in_scale[6] = 1875; | |
811 | data->in_scale[7] = 1875; | |
812 | ||
813 | /* Register sysfs hooks */ | |
c6370dbe GR |
814 | err = sysfs_create_group(&new_client->dev.kobj, &lm87_group); |
815 | if (err) | |
a888420a | 816 | goto exit_free; |
1da177e4 LT |
817 | |
818 | if (data->channel & CHAN_NO_FAN(0)) { | |
0501a381 MH |
819 | if ((err = device_create_file(&new_client->dev, |
820 | &dev_attr_in6_input)) | |
821 | || (err = device_create_file(&new_client->dev, | |
822 | &dev_attr_in6_min)) | |
823 | || (err = device_create_file(&new_client->dev, | |
c2803b98 JD |
824 | &dev_attr_in6_max)) |
825 | || (err = device_create_file(&new_client->dev, | |
826 | &sensor_dev_attr_in6_alarm.dev_attr))) | |
0501a381 | 827 | goto exit_remove; |
1da177e4 | 828 | } else { |
0501a381 MH |
829 | if ((err = device_create_file(&new_client->dev, |
830 | &dev_attr_fan1_input)) | |
831 | || (err = device_create_file(&new_client->dev, | |
832 | &dev_attr_fan1_min)) | |
833 | || (err = device_create_file(&new_client->dev, | |
c2803b98 JD |
834 | &dev_attr_fan1_div)) |
835 | || (err = device_create_file(&new_client->dev, | |
836 | &sensor_dev_attr_fan1_alarm.dev_attr))) | |
0501a381 | 837 | goto exit_remove; |
1da177e4 | 838 | } |
0501a381 | 839 | |
1da177e4 | 840 | if (data->channel & CHAN_NO_FAN(1)) { |
0501a381 MH |
841 | if ((err = device_create_file(&new_client->dev, |
842 | &dev_attr_in7_input)) | |
843 | || (err = device_create_file(&new_client->dev, | |
844 | &dev_attr_in7_min)) | |
845 | || (err = device_create_file(&new_client->dev, | |
c2803b98 JD |
846 | &dev_attr_in7_max)) |
847 | || (err = device_create_file(&new_client->dev, | |
848 | &sensor_dev_attr_in7_alarm.dev_attr))) | |
0501a381 | 849 | goto exit_remove; |
1da177e4 | 850 | } else { |
0501a381 MH |
851 | if ((err = device_create_file(&new_client->dev, |
852 | &dev_attr_fan2_input)) | |
853 | || (err = device_create_file(&new_client->dev, | |
854 | &dev_attr_fan2_min)) | |
855 | || (err = device_create_file(&new_client->dev, | |
c2803b98 JD |
856 | &dev_attr_fan2_div)) |
857 | || (err = device_create_file(&new_client->dev, | |
858 | &sensor_dev_attr_fan2_alarm.dev_attr))) | |
0501a381 | 859 | goto exit_remove; |
1da177e4 LT |
860 | } |
861 | ||
1da177e4 | 862 | if (data->channel & CHAN_TEMP3) { |
0501a381 MH |
863 | if ((err = device_create_file(&new_client->dev, |
864 | &dev_attr_temp3_input)) | |
865 | || (err = device_create_file(&new_client->dev, | |
866 | &dev_attr_temp3_max)) | |
867 | || (err = device_create_file(&new_client->dev, | |
868 | &dev_attr_temp3_min)) | |
869 | || (err = device_create_file(&new_client->dev, | |
c2803b98 JD |
870 | &dev_attr_temp3_crit)) |
871 | || (err = device_create_file(&new_client->dev, | |
872 | &sensor_dev_attr_temp3_alarm.dev_attr)) | |
873 | || (err = device_create_file(&new_client->dev, | |
874 | &sensor_dev_attr_temp3_fault.dev_attr))) | |
0501a381 | 875 | goto exit_remove; |
1da177e4 | 876 | } else { |
0501a381 MH |
877 | if ((err = device_create_file(&new_client->dev, |
878 | &dev_attr_in0_input)) | |
879 | || (err = device_create_file(&new_client->dev, | |
880 | &dev_attr_in0_min)) | |
881 | || (err = device_create_file(&new_client->dev, | |
882 | &dev_attr_in0_max)) | |
c2803b98 JD |
883 | || (err = device_create_file(&new_client->dev, |
884 | &sensor_dev_attr_in0_alarm.dev_attr)) | |
0501a381 MH |
885 | || (err = device_create_file(&new_client->dev, |
886 | &dev_attr_in5_input)) | |
887 | || (err = device_create_file(&new_client->dev, | |
888 | &dev_attr_in5_min)) | |
889 | || (err = device_create_file(&new_client->dev, | |
c2803b98 JD |
890 | &dev_attr_in5_max)) |
891 | || (err = device_create_file(&new_client->dev, | |
892 | &sensor_dev_attr_in5_alarm.dev_attr))) | |
0501a381 | 893 | goto exit_remove; |
1da177e4 LT |
894 | } |
895 | ||
896 | if (!(data->channel & CHAN_NO_VID)) { | |
8a665a05 | 897 | data->vrm = vid_which_vrm(); |
0501a381 MH |
898 | if ((err = device_create_file(&new_client->dev, |
899 | &dev_attr_cpu0_vid)) | |
900 | || (err = device_create_file(&new_client->dev, | |
901 | &dev_attr_vrm))) | |
902 | goto exit_remove; | |
1da177e4 LT |
903 | } |
904 | ||
1beeffe4 TJ |
905 | data->hwmon_dev = hwmon_device_register(&new_client->dev); |
906 | if (IS_ERR(data->hwmon_dev)) { | |
907 | err = PTR_ERR(data->hwmon_dev); | |
0501a381 MH |
908 | goto exit_remove; |
909 | } | |
1da177e4 LT |
910 | |
911 | return 0; | |
912 | ||
0501a381 MH |
913 | exit_remove: |
914 | sysfs_remove_group(&new_client->dev.kobj, &lm87_group); | |
915 | sysfs_remove_group(&new_client->dev.kobj, &lm87_group_opt); | |
1da177e4 | 916 | exit_free: |
d2cac802 | 917 | lm87_write_value(new_client, LM87_REG_CONFIG, data->config); |
1da177e4 LT |
918 | kfree(data); |
919 | exit: | |
920 | return err; | |
921 | } | |
922 | ||
923 | static void lm87_init_client(struct i2c_client *client) | |
924 | { | |
925 | struct lm87_data *data = i2c_get_clientdata(client); | |
1da177e4 | 926 | |
47064d64 BH |
927 | if (client->dev.platform_data) { |
928 | data->channel = *(u8 *)client->dev.platform_data; | |
929 | lm87_write_value(client, | |
930 | LM87_REG_CHANNEL_MODE, data->channel); | |
931 | } else { | |
932 | data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); | |
933 | } | |
d2cac802 | 934 | data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F; |
1da177e4 | 935 | |
d2cac802 | 936 | if (!(data->config & 0x01)) { |
1da177e4 LT |
937 | int i; |
938 | ||
939 | /* Limits are left uninitialized after power-up */ | |
940 | for (i = 1; i < 6; i++) { | |
941 | lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); | |
942 | lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); | |
943 | } | |
944 | for (i = 0; i < 2; i++) { | |
945 | lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); | |
946 | lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); | |
947 | lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); | |
948 | lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); | |
949 | } | |
950 | if (data->channel & CHAN_TEMP3) { | |
951 | lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); | |
952 | lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); | |
953 | } else { | |
954 | lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); | |
955 | lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); | |
956 | } | |
957 | } | |
49ae6cc8 BH |
958 | |
959 | /* Make sure Start is set and INT#_Clear is clear */ | |
d2cac802 | 960 | if ((data->config & 0x09) != 0x01) |
1da177e4 | 961 | lm87_write_value(client, LM87_REG_CONFIG, |
d2cac802 | 962 | (data->config & 0x77) | 0x01); |
1da177e4 LT |
963 | } |
964 | ||
a888420a | 965 | static int lm87_remove(struct i2c_client *client) |
1da177e4 | 966 | { |
943b0830 | 967 | struct lm87_data *data = i2c_get_clientdata(client); |
1da177e4 | 968 | |
1beeffe4 | 969 | hwmon_device_unregister(data->hwmon_dev); |
0501a381 MH |
970 | sysfs_remove_group(&client->dev.kobj, &lm87_group); |
971 | sysfs_remove_group(&client->dev.kobj, &lm87_group_opt); | |
943b0830 | 972 | |
d2cac802 | 973 | lm87_write_value(client, LM87_REG_CONFIG, data->config); |
943b0830 | 974 | kfree(data); |
1da177e4 LT |
975 | return 0; |
976 | } | |
977 | ||
978 | static struct lm87_data *lm87_update_device(struct device *dev) | |
979 | { | |
980 | struct i2c_client *client = to_i2c_client(dev); | |
981 | struct lm87_data *data = i2c_get_clientdata(client); | |
982 | ||
9a61bf63 | 983 | mutex_lock(&data->update_lock); |
1da177e4 LT |
984 | |
985 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { | |
986 | int i, j; | |
987 | ||
988 | dev_dbg(&client->dev, "Updating data.\n"); | |
989 | ||
990 | i = (data->channel & CHAN_TEMP3) ? 1 : 0; | |
991 | j = (data->channel & CHAN_TEMP3) ? 5 : 6; | |
992 | for (; i < j; i++) { | |
993 | data->in[i] = lm87_read_value(client, | |
994 | LM87_REG_IN(i)); | |
995 | data->in_min[i] = lm87_read_value(client, | |
996 | LM87_REG_IN_MIN(i)); | |
997 | data->in_max[i] = lm87_read_value(client, | |
998 | LM87_REG_IN_MAX(i)); | |
999 | } | |
1000 | ||
1001 | for (i = 0; i < 2; i++) { | |
1002 | if (data->channel & CHAN_NO_FAN(i)) { | |
1003 | data->in[6+i] = lm87_read_value(client, | |
1004 | LM87_REG_AIN(i)); | |
1005 | data->in_max[6+i] = lm87_read_value(client, | |
1006 | LM87_REG_AIN_MAX(i)); | |
1007 | data->in_min[6+i] = lm87_read_value(client, | |
1008 | LM87_REG_AIN_MIN(i)); | |
1009 | ||
1010 | } else { | |
1011 | data->fan[i] = lm87_read_value(client, | |
1012 | LM87_REG_FAN(i)); | |
1013 | data->fan_min[i] = lm87_read_value(client, | |
1014 | LM87_REG_FAN_MIN(i)); | |
1015 | } | |
1016 | } | |
1017 | ||
1018 | j = (data->channel & CHAN_TEMP3) ? 3 : 2; | |
1019 | for (i = 0 ; i < j; i++) { | |
1020 | data->temp[i] = lm87_read_value(client, | |
1021 | LM87_REG_TEMP[i]); | |
1022 | data->temp_high[i] = lm87_read_value(client, | |
1023 | LM87_REG_TEMP_HIGH[i]); | |
1024 | data->temp_low[i] = lm87_read_value(client, | |
1025 | LM87_REG_TEMP_LOW[i]); | |
1026 | } | |
1027 | ||
1028 | i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); | |
1029 | j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); | |
1030 | data->temp_crit_int = min(i, j); | |
1031 | ||
1032 | i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); | |
1033 | j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); | |
1034 | data->temp_crit_ext = min(i, j); | |
1035 | ||
1036 | i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); | |
1037 | data->fan_div[0] = (i >> 4) & 0x03; | |
1038 | data->fan_div[1] = (i >> 6) & 0x03; | |
1039 | data->vid = (i & 0x0F) | |
1040 | | (lm87_read_value(client, LM87_REG_VID4) & 0x01) | |
1041 | << 4; | |
1042 | ||
1043 | data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) | |
1044 | | (lm87_read_value(client, LM87_REG_ALARMS2) | |
1045 | << 8); | |
1046 | data->aout = lm87_read_value(client, LM87_REG_AOUT); | |
1047 | ||
1048 | data->last_updated = jiffies; | |
1049 | data->valid = 1; | |
1050 | } | |
1051 | ||
9a61bf63 | 1052 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1053 | |
1054 | return data; | |
1055 | } | |
1056 | ||
f0967eea | 1057 | module_i2c_driver(lm87_driver); |
1da177e4 LT |
1058 | |
1059 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org> and others"); | |
1060 | MODULE_DESCRIPTION("LM87 driver"); | |
1061 | MODULE_LICENSE("GPL"); |