Commit | Line | Data |
---|---|---|
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 | 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 | ||
1da177e4 | 279 | #define show_in(offset) \ |
c6370dbe GR |
280 | static ssize_t show_in##offset##_input(struct device *dev, \ |
281 | struct device_attribute *attr, \ | |
282 | char *buf) \ | |
1da177e4 LT |
283 | { \ |
284 | struct lm87_data *data = lm87_update_device(dev); \ | |
285 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \ | |
286 | data->in_scale[offset])); \ | |
287 | } \ | |
c6370dbe GR |
288 | static ssize_t show_in##offset##_min(struct device *dev, \ |
289 | struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
290 | { \ |
291 | struct lm87_data *data = lm87_update_device(dev); \ | |
292 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \ | |
293 | data->in_scale[offset])); \ | |
294 | } \ | |
c6370dbe GR |
295 | static ssize_t show_in##offset##_max(struct device *dev, \ |
296 | struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
297 | { \ |
298 | struct lm87_data *data = lm87_update_device(dev); \ | |
299 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \ | |
300 | data->in_scale[offset])); \ | |
301 | } \ | |
302 | static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ | |
303 | show_in##offset##_input, NULL); | |
304 | show_in(0); | |
305 | show_in(1); | |
306 | show_in(2); | |
307 | show_in(3); | |
308 | show_in(4); | |
309 | show_in(5); | |
310 | show_in(6); | |
311 | show_in(7); | |
312 | ||
c6370dbe GR |
313 | static ssize_t set_in_min(struct device *dev, const char *buf, int nr, |
314 | size_t count) | |
1da177e4 LT |
315 | { |
316 | struct i2c_client *client = to_i2c_client(dev); | |
317 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
318 | long val; |
319 | int err; | |
320 | ||
321 | err = kstrtol(buf, 10, &val); | |
322 | if (err) | |
323 | return err; | |
1da177e4 | 324 | |
9a61bf63 | 325 | mutex_lock(&data->update_lock); |
1da177e4 | 326 | data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); |
c6370dbe GR |
327 | lm87_write_value(client, nr < 6 ? LM87_REG_IN_MIN(nr) : |
328 | LM87_REG_AIN_MIN(nr - 6), data->in_min[nr]); | |
9a61bf63 | 329 | mutex_unlock(&data->update_lock); |
c6370dbe | 330 | return count; |
1da177e4 LT |
331 | } |
332 | ||
c6370dbe GR |
333 | static ssize_t set_in_max(struct device *dev, const char *buf, int nr, |
334 | size_t count) | |
1da177e4 LT |
335 | { |
336 | struct i2c_client *client = to_i2c_client(dev); | |
337 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
338 | long val; |
339 | int err; | |
340 | ||
341 | err = kstrtol(buf, 10, &val); | |
342 | if (err) | |
343 | return err; | |
1da177e4 | 344 | |
9a61bf63 | 345 | mutex_lock(&data->update_lock); |
1da177e4 | 346 | data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); |
c6370dbe GR |
347 | lm87_write_value(client, nr < 6 ? LM87_REG_IN_MAX(nr) : |
348 | LM87_REG_AIN_MAX(nr - 6), data->in_max[nr]); | |
9a61bf63 | 349 | mutex_unlock(&data->update_lock); |
c6370dbe | 350 | return count; |
1da177e4 LT |
351 | } |
352 | ||
353 | #define set_in(offset) \ | |
c6370dbe GR |
354 | static ssize_t set_in##offset##_min(struct device *dev, \ |
355 | struct device_attribute *attr, \ | |
356 | const char *buf, size_t count) \ | |
1da177e4 | 357 | { \ |
c6370dbe | 358 | return set_in_min(dev, buf, offset, count); \ |
1da177e4 | 359 | } \ |
c6370dbe GR |
360 | static ssize_t set_in##offset##_max(struct device *dev, \ |
361 | struct device_attribute *attr, \ | |
362 | const char *buf, size_t count) \ | |
1da177e4 | 363 | { \ |
c6370dbe | 364 | return set_in_max(dev, buf, offset, count); \ |
1da177e4 LT |
365 | } \ |
366 | static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
367 | show_in##offset##_min, set_in##offset##_min); \ | |
368 | static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
369 | show_in##offset##_max, set_in##offset##_max); | |
370 | set_in(0); | |
371 | set_in(1); | |
372 | set_in(2); | |
373 | set_in(3); | |
374 | set_in(4); | |
375 | set_in(5); | |
376 | set_in(6); | |
377 | set_in(7); | |
378 | ||
379 | #define show_temp(offset) \ | |
c6370dbe GR |
380 | static ssize_t show_temp##offset##_input(struct device *dev, \ |
381 | struct device_attribute *attr, \ | |
382 | char *buf) \ | |
1da177e4 LT |
383 | { \ |
384 | struct lm87_data *data = lm87_update_device(dev); \ | |
c6370dbe | 385 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset - 1])); \ |
1da177e4 | 386 | } \ |
c6370dbe GR |
387 | static ssize_t show_temp##offset##_low(struct device *dev, \ |
388 | struct device_attribute *attr, \ | |
389 | char *buf) \ | |
1da177e4 LT |
390 | { \ |
391 | struct lm87_data *data = lm87_update_device(dev); \ | |
c6370dbe GR |
392 | return sprintf(buf, "%d\n", \ |
393 | TEMP_FROM_REG(data->temp_low[offset - 1])); \ | |
1da177e4 | 394 | } \ |
c6370dbe GR |
395 | static ssize_t show_temp##offset##_high(struct device *dev, \ |
396 | struct device_attribute *attr, \ | |
397 | char *buf) \ | |
1da177e4 LT |
398 | { \ |
399 | struct lm87_data *data = lm87_update_device(dev); \ | |
c6370dbe GR |
400 | return sprintf(buf, "%d\n", \ |
401 | TEMP_FROM_REG(data->temp_high[offset - 1])); \ | |
402 | } \ | |
1da177e4 LT |
403 | static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
404 | show_temp##offset##_input, NULL); | |
405 | show_temp(1); | |
406 | show_temp(2); | |
407 | show_temp(3); | |
408 | ||
c6370dbe GR |
409 | static ssize_t set_temp_low(struct device *dev, const char *buf, int nr, |
410 | size_t count) | |
1da177e4 LT |
411 | { |
412 | struct i2c_client *client = to_i2c_client(dev); | |
413 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
414 | long val; |
415 | int err; | |
416 | ||
417 | err = kstrtol(buf, 10, &val); | |
418 | if (err) | |
419 | return err; | |
1da177e4 | 420 | |
9a61bf63 | 421 | mutex_lock(&data->update_lock); |
1da177e4 LT |
422 | data->temp_low[nr] = TEMP_TO_REG(val); |
423 | lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); | |
9a61bf63 | 424 | mutex_unlock(&data->update_lock); |
c6370dbe | 425 | return count; |
1da177e4 LT |
426 | } |
427 | ||
c6370dbe GR |
428 | static ssize_t set_temp_high(struct device *dev, const char *buf, int nr, |
429 | size_t count) | |
1da177e4 LT |
430 | { |
431 | struct i2c_client *client = to_i2c_client(dev); | |
432 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
433 | long val; |
434 | int err; | |
435 | ||
436 | err = kstrtol(buf, 10, &val); | |
437 | if (err) | |
438 | return err; | |
1da177e4 | 439 | |
9a61bf63 | 440 | mutex_lock(&data->update_lock); |
1da177e4 LT |
441 | data->temp_high[nr] = TEMP_TO_REG(val); |
442 | lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); | |
9a61bf63 | 443 | mutex_unlock(&data->update_lock); |
c6370dbe | 444 | return count; |
1da177e4 LT |
445 | } |
446 | ||
447 | #define set_temp(offset) \ | |
c6370dbe GR |
448 | static ssize_t set_temp##offset##_low(struct device *dev, \ |
449 | struct device_attribute *attr, \ | |
450 | const char *buf, size_t count) \ | |
1da177e4 | 451 | { \ |
c6370dbe | 452 | return set_temp_low(dev, buf, offset - 1, count); \ |
1da177e4 | 453 | } \ |
c6370dbe GR |
454 | static ssize_t set_temp##offset##_high(struct device *dev, \ |
455 | struct device_attribute *attr, \ | |
456 | const char *buf, size_t count) \ | |
1da177e4 | 457 | { \ |
c6370dbe | 458 | return set_temp_high(dev, buf, offset - 1, count); \ |
1da177e4 LT |
459 | } \ |
460 | static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
461 | show_temp##offset##_high, set_temp##offset##_high); \ | |
462 | static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
463 | show_temp##offset##_low, set_temp##offset##_low); | |
464 | set_temp(1); | |
465 | set_temp(2); | |
466 | set_temp(3); | |
467 | ||
c6370dbe GR |
468 | static ssize_t show_temp_crit_int(struct device *dev, |
469 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
470 | { |
471 | struct lm87_data *data = lm87_update_device(dev); | |
472 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); | |
473 | } | |
474 | ||
c6370dbe GR |
475 | static ssize_t show_temp_crit_ext(struct device *dev, |
476 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
477 | { |
478 | struct lm87_data *data = lm87_update_device(dev); | |
479 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); | |
480 | } | |
481 | ||
482 | static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit_int, NULL); | |
483 | static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit_ext, NULL); | |
484 | static DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit_ext, NULL); | |
485 | ||
486 | #define show_fan(offset) \ | |
c6370dbe GR |
487 | static ssize_t show_fan##offset##_input(struct device *dev, \ |
488 | struct device_attribute *attr, \ | |
489 | char *buf) \ | |
1da177e4 LT |
490 | { \ |
491 | struct lm87_data *data = lm87_update_device(dev); \ | |
c6370dbe GR |
492 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[offset - 1], \ |
493 | FAN_DIV_FROM_REG(data->fan_div[offset - 1]))); \ | |
1da177e4 | 494 | } \ |
c6370dbe GR |
495 | static ssize_t show_fan##offset##_min(struct device *dev, \ |
496 | struct device_attribute *attr, \ | |
497 | char *buf) \ | |
1da177e4 LT |
498 | { \ |
499 | struct lm87_data *data = lm87_update_device(dev); \ | |
c6370dbe GR |
500 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[offset - 1], \ |
501 | FAN_DIV_FROM_REG(data->fan_div[offset - 1]))); \ | |
1da177e4 | 502 | } \ |
c6370dbe GR |
503 | static ssize_t show_fan##offset##_div(struct device *dev, \ |
504 | struct device_attribute *attr, \ | |
505 | char *buf) \ | |
1da177e4 LT |
506 | { \ |
507 | struct lm87_data *data = lm87_update_device(dev); \ | |
c6370dbe GR |
508 | return sprintf(buf, "%d\n", \ |
509 | FAN_DIV_FROM_REG(data->fan_div[offset - 1])); \ | |
1da177e4 LT |
510 | } \ |
511 | static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
512 | show_fan##offset##_input, NULL); | |
513 | show_fan(1); | |
514 | show_fan(2); | |
515 | ||
c6370dbe GR |
516 | static ssize_t set_fan_min(struct device *dev, const char *buf, int nr, |
517 | size_t count) | |
1da177e4 LT |
518 | { |
519 | struct i2c_client *client = to_i2c_client(dev); | |
520 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
521 | long val; |
522 | int err; | |
523 | ||
524 | err = kstrtol(buf, 10, &val); | |
525 | if (err) | |
526 | return err; | |
1da177e4 | 527 | |
9a61bf63 | 528 | mutex_lock(&data->update_lock); |
1da177e4 LT |
529 | data->fan_min[nr] = FAN_TO_REG(val, |
530 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
531 | lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 532 | mutex_unlock(&data->update_lock); |
c6370dbe | 533 | return count; |
1da177e4 LT |
534 | } |
535 | ||
c6370dbe GR |
536 | /* |
537 | * Note: we save and restore the fan minimum here, because its value is | |
538 | * determined in part by the fan clock divider. This follows the principle | |
539 | * of least surprise; the user doesn't expect the fan minimum to change just | |
540 | * because the divider changed. | |
541 | */ | |
1da177e4 LT |
542 | static ssize_t set_fan_div(struct device *dev, const char *buf, |
543 | size_t count, int nr) | |
544 | { | |
545 | struct i2c_client *client = to_i2c_client(dev); | |
546 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
547 | long val; |
548 | int err; | |
1da177e4 LT |
549 | unsigned long min; |
550 | u8 reg; | |
551 | ||
c6370dbe GR |
552 | err = kstrtol(buf, 10, &val); |
553 | if (err) | |
554 | return err; | |
555 | ||
9a61bf63 | 556 | mutex_lock(&data->update_lock); |
1da177e4 LT |
557 | min = FAN_FROM_REG(data->fan_min[nr], |
558 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
559 | ||
560 | switch (val) { | |
c6370dbe GR |
561 | case 1: |
562 | data->fan_div[nr] = 0; | |
563 | break; | |
564 | case 2: | |
565 | data->fan_div[nr] = 1; | |
566 | break; | |
567 | case 4: | |
568 | data->fan_div[nr] = 2; | |
569 | break; | |
570 | case 8: | |
571 | data->fan_div[nr] = 3; | |
572 | break; | |
1da177e4 | 573 | default: |
9a61bf63 | 574 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
575 | return -EINVAL; |
576 | } | |
577 | ||
578 | reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); | |
579 | switch (nr) { | |
580 | case 0: | |
581 | reg = (reg & 0xCF) | (data->fan_div[0] << 4); | |
582 | break; | |
583 | case 1: | |
584 | reg = (reg & 0x3F) | (data->fan_div[1] << 6); | |
585 | break; | |
586 | } | |
587 | lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); | |
588 | ||
589 | data->fan_min[nr] = FAN_TO_REG(min, val); | |
590 | lm87_write_value(client, LM87_REG_FAN_MIN(nr), | |
591 | data->fan_min[nr]); | |
9a61bf63 | 592 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
593 | |
594 | return count; | |
595 | } | |
596 | ||
597 | #define set_fan(offset) \ | |
c6370dbe GR |
598 | static ssize_t set_fan##offset##_min(struct device *dev, \ |
599 | struct device_attribute *attr, \ | |
600 | const char *buf, size_t count) \ | |
1da177e4 | 601 | { \ |
c6370dbe | 602 | return set_fan_min(dev, buf, offset - 1, count); \ |
1da177e4 | 603 | } \ |
c6370dbe GR |
604 | static ssize_t set_fan##offset##_div(struct device *dev, \ |
605 | struct device_attribute *attr, \ | |
606 | const char *buf, size_t count) \ | |
1da177e4 | 607 | { \ |
c6370dbe | 608 | return set_fan_div(dev, buf, count, offset - 1); \ |
1da177e4 LT |
609 | } \ |
610 | static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
611 | show_fan##offset##_min, set_fan##offset##_min); \ | |
612 | static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
613 | show_fan##offset##_div, set_fan##offset##_div); | |
614 | set_fan(1); | |
615 | set_fan(2); | |
616 | ||
c6370dbe GR |
617 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, |
618 | char *buf) | |
1da177e4 LT |
619 | { |
620 | struct lm87_data *data = lm87_update_device(dev); | |
621 | return sprintf(buf, "%d\n", data->alarms); | |
622 | } | |
623 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
624 | ||
c6370dbe GR |
625 | static ssize_t show_vid(struct device *dev, struct device_attribute *attr, |
626 | char *buf) | |
1da177e4 LT |
627 | { |
628 | struct lm87_data *data = lm87_update_device(dev); | |
629 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); | |
630 | } | |
631 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); | |
632 | ||
c6370dbe GR |
633 | static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, |
634 | char *buf) | |
1da177e4 | 635 | { |
90d6619a | 636 | struct lm87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
637 | return sprintf(buf, "%d\n", data->vrm); |
638 | } | |
c6370dbe GR |
639 | static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, |
640 | const char *buf, size_t count) | |
1da177e4 | 641 | { |
8f74efe8 | 642 | struct lm87_data *data = dev_get_drvdata(dev); |
c6370dbe GR |
643 | unsigned long val; |
644 | int err; | |
645 | ||
646 | err = kstrtoul(buf, 10, &val); | |
647 | if (err) | |
648 | return err; | |
649 | data->vrm = val; | |
1da177e4 LT |
650 | return count; |
651 | } | |
652 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); | |
653 | ||
c6370dbe GR |
654 | static ssize_t show_aout(struct device *dev, struct device_attribute *attr, |
655 | char *buf) | |
1da177e4 LT |
656 | { |
657 | struct lm87_data *data = lm87_update_device(dev); | |
658 | return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); | |
659 | } | |
c6370dbe GR |
660 | static ssize_t set_aout(struct device *dev, struct device_attribute *attr, |
661 | const char *buf, size_t count) | |
1da177e4 LT |
662 | { |
663 | struct i2c_client *client = to_i2c_client(dev); | |
664 | struct lm87_data *data = i2c_get_clientdata(client); | |
c6370dbe GR |
665 | long val; |
666 | int err; | |
667 | ||
668 | err = kstrtol(buf, 10, &val); | |
669 | if (err) | |
670 | return err; | |
1da177e4 | 671 | |
9a61bf63 | 672 | mutex_lock(&data->update_lock); |
1da177e4 LT |
673 | data->aout = AOUT_TO_REG(val); |
674 | lm87_write_value(client, LM87_REG_AOUT, data->aout); | |
9a61bf63 | 675 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
676 | return count; |
677 | } | |
678 | static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout); | |
679 | ||
c2803b98 JD |
680 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
681 | char *buf) | |
682 | { | |
683 | struct lm87_data *data = lm87_update_device(dev); | |
684 | int bitnr = to_sensor_dev_attr(attr)->index; | |
685 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
686 | } | |
687 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); | |
688 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); | |
689 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); | |
690 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
691 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); | |
692 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); | |
693 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); | |
694 | static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7); | |
695 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
696 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); | |
697 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5); | |
698 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); | |
699 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); | |
700 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14); | |
701 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); | |
702 | ||
1da177e4 LT |
703 | /* |
704 | * Real code | |
705 | */ | |
706 | ||
0501a381 MH |
707 | static struct attribute *lm87_attributes[] = { |
708 | &dev_attr_in1_input.attr, | |
709 | &dev_attr_in1_min.attr, | |
710 | &dev_attr_in1_max.attr, | |
c2803b98 | 711 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
0501a381 MH |
712 | &dev_attr_in2_input.attr, |
713 | &dev_attr_in2_min.attr, | |
714 | &dev_attr_in2_max.attr, | |
c2803b98 | 715 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
0501a381 MH |
716 | &dev_attr_in3_input.attr, |
717 | &dev_attr_in3_min.attr, | |
718 | &dev_attr_in3_max.attr, | |
c2803b98 | 719 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
0501a381 MH |
720 | &dev_attr_in4_input.attr, |
721 | &dev_attr_in4_min.attr, | |
722 | &dev_attr_in4_max.attr, | |
c2803b98 | 723 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
0501a381 MH |
724 | |
725 | &dev_attr_temp1_input.attr, | |
726 | &dev_attr_temp1_max.attr, | |
727 | &dev_attr_temp1_min.attr, | |
728 | &dev_attr_temp1_crit.attr, | |
c2803b98 | 729 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
0501a381 MH |
730 | &dev_attr_temp2_input.attr, |
731 | &dev_attr_temp2_max.attr, | |
732 | &dev_attr_temp2_min.attr, | |
733 | &dev_attr_temp2_crit.attr, | |
c2803b98 JD |
734 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
735 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
0501a381 MH |
736 | |
737 | &dev_attr_alarms.attr, | |
738 | &dev_attr_aout_output.attr, | |
739 | ||
740 | NULL | |
741 | }; | |
742 | ||
743 | static const struct attribute_group lm87_group = { | |
744 | .attrs = lm87_attributes, | |
745 | }; | |
746 | ||
073f1e6c | 747 | static struct attribute *lm87_attributes_in6[] = { |
0501a381 MH |
748 | &dev_attr_in6_input.attr, |
749 | &dev_attr_in6_min.attr, | |
750 | &dev_attr_in6_max.attr, | |
c2803b98 | 751 | &sensor_dev_attr_in6_alarm.dev_attr.attr, |
073f1e6c GR |
752 | NULL |
753 | }; | |
754 | ||
755 | static const struct attribute_group lm87_group_in6 = { | |
756 | .attrs = lm87_attributes_in6, | |
757 | }; | |
0501a381 | 758 | |
073f1e6c | 759 | static struct attribute *lm87_attributes_fan1[] = { |
0501a381 MH |
760 | &dev_attr_fan1_input.attr, |
761 | &dev_attr_fan1_min.attr, | |
762 | &dev_attr_fan1_div.attr, | |
c2803b98 | 763 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
073f1e6c GR |
764 | NULL |
765 | }; | |
766 | ||
767 | static const struct attribute_group lm87_group_fan1 = { | |
768 | .attrs = lm87_attributes_fan1, | |
769 | }; | |
0501a381 | 770 | |
073f1e6c | 771 | static struct attribute *lm87_attributes_in7[] = { |
0501a381 MH |
772 | &dev_attr_in7_input.attr, |
773 | &dev_attr_in7_min.attr, | |
774 | &dev_attr_in7_max.attr, | |
c2803b98 | 775 | &sensor_dev_attr_in7_alarm.dev_attr.attr, |
073f1e6c GR |
776 | NULL |
777 | }; | |
0501a381 | 778 | |
073f1e6c GR |
779 | static const struct attribute_group lm87_group_in7 = { |
780 | .attrs = lm87_attributes_in7, | |
781 | }; | |
782 | ||
783 | static struct attribute *lm87_attributes_fan2[] = { | |
0501a381 MH |
784 | &dev_attr_fan2_input.attr, |
785 | &dev_attr_fan2_min.attr, | |
786 | &dev_attr_fan2_div.attr, | |
c2803b98 | 787 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
073f1e6c GR |
788 | NULL |
789 | }; | |
0501a381 | 790 | |
073f1e6c GR |
791 | static const struct attribute_group lm87_group_fan2 = { |
792 | .attrs = lm87_attributes_fan2, | |
793 | }; | |
794 | ||
795 | static struct attribute *lm87_attributes_temp3[] = { | |
0501a381 MH |
796 | &dev_attr_temp3_input.attr, |
797 | &dev_attr_temp3_max.attr, | |
798 | &dev_attr_temp3_min.attr, | |
799 | &dev_attr_temp3_crit.attr, | |
c2803b98 JD |
800 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
801 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
073f1e6c GR |
802 | NULL |
803 | }; | |
0501a381 | 804 | |
073f1e6c GR |
805 | static const struct attribute_group lm87_group_temp3 = { |
806 | .attrs = lm87_attributes_temp3, | |
807 | }; | |
808 | ||
809 | static struct attribute *lm87_attributes_in0_5[] = { | |
0501a381 MH |
810 | &dev_attr_in0_input.attr, |
811 | &dev_attr_in0_min.attr, | |
812 | &dev_attr_in0_max.attr, | |
c2803b98 | 813 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
0501a381 MH |
814 | &dev_attr_in5_input.attr, |
815 | &dev_attr_in5_min.attr, | |
816 | &dev_attr_in5_max.attr, | |
c2803b98 | 817 | &sensor_dev_attr_in5_alarm.dev_attr.attr, |
073f1e6c GR |
818 | NULL |
819 | }; | |
820 | ||
821 | static const struct attribute_group lm87_group_in0_5 = { | |
822 | .attrs = lm87_attributes_in0_5, | |
823 | }; | |
0501a381 | 824 | |
073f1e6c | 825 | static struct attribute *lm87_attributes_vid[] = { |
0501a381 MH |
826 | &dev_attr_cpu0_vid.attr, |
827 | &dev_attr_vrm.attr, | |
0501a381 MH |
828 | NULL |
829 | }; | |
830 | ||
073f1e6c GR |
831 | static const struct attribute_group lm87_group_vid = { |
832 | .attrs = lm87_attributes_vid, | |
0501a381 MH |
833 | }; |
834 | ||
a888420a | 835 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
8652a264 | 836 | static int lm87_detect(struct i2c_client *client, struct i2c_board_info *info) |
1da177e4 | 837 | { |
8652a264 | 838 | struct i2c_adapter *adapter = client->adapter; |
52df6440 JD |
839 | const char *name; |
840 | u8 cid, rev; | |
1da177e4 LT |
841 | |
842 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
a888420a | 843 | return -ENODEV; |
1da177e4 | 844 | |
8652a264 | 845 | if (lm87_read_value(client, LM87_REG_CONFIG) & 0x80) |
52df6440 | 846 | return -ENODEV; |
1da177e4 LT |
847 | |
848 | /* Now, we do the remaining detection. */ | |
8652a264 JD |
849 | cid = lm87_read_value(client, LM87_REG_COMPANY_ID); |
850 | rev = lm87_read_value(client, LM87_REG_REVISION); | |
52df6440 JD |
851 | |
852 | if (cid == 0x02 /* National Semiconductor */ | |
853 | && (rev >= 0x01 && rev <= 0x08)) | |
854 | name = "lm87"; | |
855 | else if (cid == 0x41 /* Analog Devices */ | |
856 | && (rev & 0xf0) == 0x10) | |
857 | name = "adm1024"; | |
858 | else { | |
859 | dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n", | |
8652a264 | 860 | client->addr); |
52df6440 | 861 | return -ENODEV; |
1da177e4 LT |
862 | } |
863 | ||
52df6440 | 864 | strlcpy(info->type, name, I2C_NAME_SIZE); |
a888420a JD |
865 | |
866 | return 0; | |
867 | } | |
868 | ||
073f1e6c GR |
869 | static void lm87_remove_files(struct i2c_client *client) |
870 | { | |
871 | struct device *dev = &client->dev; | |
872 | ||
873 | sysfs_remove_group(&dev->kobj, &lm87_group); | |
874 | sysfs_remove_group(&dev->kobj, &lm87_group_in6); | |
875 | sysfs_remove_group(&dev->kobj, &lm87_group_fan1); | |
876 | sysfs_remove_group(&dev->kobj, &lm87_group_in7); | |
877 | sysfs_remove_group(&dev->kobj, &lm87_group_fan2); | |
878 | sysfs_remove_group(&dev->kobj, &lm87_group_temp3); | |
879 | sysfs_remove_group(&dev->kobj, &lm87_group_in0_5); | |
880 | sysfs_remove_group(&dev->kobj, &lm87_group_vid); | |
881 | } | |
882 | ||
8652a264 JD |
883 | static void lm87_init_client(struct i2c_client *client) |
884 | { | |
885 | struct lm87_data *data = i2c_get_clientdata(client); | |
886 | ||
887 | if (client->dev.platform_data) { | |
888 | data->channel = *(u8 *)client->dev.platform_data; | |
889 | lm87_write_value(client, | |
890 | LM87_REG_CHANNEL_MODE, data->channel); | |
891 | } else { | |
892 | data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); | |
893 | } | |
894 | data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F; | |
895 | ||
896 | if (!(data->config & 0x01)) { | |
897 | int i; | |
898 | ||
899 | /* Limits are left uninitialized after power-up */ | |
900 | for (i = 1; i < 6; i++) { | |
901 | lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); | |
902 | lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); | |
903 | } | |
904 | for (i = 0; i < 2; i++) { | |
905 | lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); | |
906 | lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); | |
907 | lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); | |
908 | lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); | |
909 | } | |
910 | if (data->channel & CHAN_TEMP3) { | |
911 | lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); | |
912 | lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); | |
913 | } else { | |
914 | lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); | |
915 | lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); | |
916 | } | |
917 | } | |
918 | ||
919 | /* Make sure Start is set and INT#_Clear is clear */ | |
920 | if ((data->config & 0x09) != 0x01) | |
921 | lm87_write_value(client, LM87_REG_CONFIG, | |
922 | (data->config & 0x77) | 0x01); | |
923 | } | |
924 | ||
925 | static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id) | |
a888420a JD |
926 | { |
927 | struct lm87_data *data; | |
928 | int err; | |
929 | ||
930 | data = kzalloc(sizeof(struct lm87_data), GFP_KERNEL); | |
931 | if (!data) { | |
932 | err = -ENOMEM; | |
933 | goto exit; | |
934 | } | |
935 | ||
8652a264 | 936 | i2c_set_clientdata(client, data); |
1da177e4 | 937 | data->valid = 0; |
9a61bf63 | 938 | mutex_init(&data->update_lock); |
1da177e4 | 939 | |
1da177e4 | 940 | /* Initialize the LM87 chip */ |
8652a264 | 941 | lm87_init_client(client); |
1da177e4 LT |
942 | |
943 | data->in_scale[0] = 2500; | |
944 | data->in_scale[1] = 2700; | |
945 | data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; | |
946 | data->in_scale[3] = 5000; | |
947 | data->in_scale[4] = 12000; | |
948 | data->in_scale[5] = 2700; | |
949 | data->in_scale[6] = 1875; | |
950 | data->in_scale[7] = 1875; | |
951 | ||
952 | /* Register sysfs hooks */ | |
8652a264 | 953 | err = sysfs_create_group(&client->dev.kobj, &lm87_group); |
c6370dbe | 954 | if (err) |
a888420a | 955 | goto exit_free; |
1da177e4 LT |
956 | |
957 | if (data->channel & CHAN_NO_FAN(0)) { | |
8652a264 | 958 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_in6); |
073f1e6c | 959 | if (err) |
0501a381 | 960 | goto exit_remove; |
1da177e4 | 961 | } else { |
8652a264 | 962 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_fan1); |
073f1e6c | 963 | if (err) |
0501a381 | 964 | goto exit_remove; |
1da177e4 | 965 | } |
0501a381 | 966 | |
1da177e4 | 967 | if (data->channel & CHAN_NO_FAN(1)) { |
8652a264 | 968 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_in7); |
073f1e6c | 969 | if (err) |
0501a381 | 970 | goto exit_remove; |
1da177e4 | 971 | } else { |
8652a264 | 972 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_fan2); |
073f1e6c | 973 | if (err) |
0501a381 | 974 | goto exit_remove; |
1da177e4 LT |
975 | } |
976 | ||
1da177e4 | 977 | if (data->channel & CHAN_TEMP3) { |
8652a264 | 978 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_temp3); |
073f1e6c | 979 | if (err) |
0501a381 | 980 | goto exit_remove; |
1da177e4 | 981 | } else { |
8652a264 | 982 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_in0_5); |
073f1e6c | 983 | if (err) |
0501a381 | 984 | goto exit_remove; |
1da177e4 LT |
985 | } |
986 | ||
987 | if (!(data->channel & CHAN_NO_VID)) { | |
8a665a05 | 988 | data->vrm = vid_which_vrm(); |
8652a264 | 989 | err = sysfs_create_group(&client->dev.kobj, &lm87_group_vid); |
073f1e6c | 990 | if (err) |
0501a381 | 991 | goto exit_remove; |
1da177e4 LT |
992 | } |
993 | ||
8652a264 | 994 | data->hwmon_dev = hwmon_device_register(&client->dev); |
1beeffe4 TJ |
995 | if (IS_ERR(data->hwmon_dev)) { |
996 | err = PTR_ERR(data->hwmon_dev); | |
0501a381 MH |
997 | goto exit_remove; |
998 | } | |
1da177e4 LT |
999 | |
1000 | return 0; | |
1001 | ||
0501a381 | 1002 | exit_remove: |
8652a264 | 1003 | lm87_remove_files(client); |
1da177e4 | 1004 | exit_free: |
8652a264 | 1005 | lm87_write_value(client, LM87_REG_CONFIG, data->config); |
1da177e4 LT |
1006 | kfree(data); |
1007 | exit: | |
1008 | return err; | |
1009 | } | |
1010 | ||
a888420a | 1011 | static int lm87_remove(struct i2c_client *client) |
1da177e4 | 1012 | { |
943b0830 | 1013 | struct lm87_data *data = i2c_get_clientdata(client); |
1da177e4 | 1014 | |
1beeffe4 | 1015 | hwmon_device_unregister(data->hwmon_dev); |
073f1e6c | 1016 | lm87_remove_files(client); |
943b0830 | 1017 | |
d2cac802 | 1018 | lm87_write_value(client, LM87_REG_CONFIG, data->config); |
943b0830 | 1019 | kfree(data); |
1da177e4 LT |
1020 | return 0; |
1021 | } | |
1022 | ||
8652a264 JD |
1023 | /* |
1024 | * Driver data (common to all clients) | |
1025 | */ | |
1da177e4 | 1026 | |
8652a264 JD |
1027 | static const struct i2c_device_id lm87_id[] = { |
1028 | { "lm87", lm87 }, | |
1029 | { "adm1024", adm1024 }, | |
1030 | { } | |
1031 | }; | |
1032 | MODULE_DEVICE_TABLE(i2c, lm87_id); | |
1da177e4 | 1033 | |
8652a264 JD |
1034 | static struct i2c_driver lm87_driver = { |
1035 | .class = I2C_CLASS_HWMON, | |
1036 | .driver = { | |
1037 | .name = "lm87", | |
1038 | }, | |
1039 | .probe = lm87_probe, | |
1040 | .remove = lm87_remove, | |
1041 | .id_table = lm87_id, | |
1042 | .detect = lm87_detect, | |
1043 | .address_list = normal_i2c, | |
1044 | }; | |
1da177e4 | 1045 | |
f0967eea | 1046 | module_i2c_driver(lm87_driver); |
1da177e4 LT |
1047 | |
1048 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org> and others"); | |
1049 | MODULE_DESCRIPTION("LM87 driver"); | |
1050 | MODULE_LICENSE("GPL"); |