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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> |
67043d18 | 69 | #include <linux/regulator/consumer.h> |
1da177e4 LT |
70 | |
71 | /* | |
72 | * Addresses to scan | |
73 | * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e. | |
74 | */ | |
75 | ||
25e9c86d | 76 | static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; |
1da177e4 | 77 | |
1da177e4 LT |
78 | /* |
79 | * The LM87 registers | |
80 | */ | |
81 | ||
82 | /* nr in 0..5 */ | |
83 | #define LM87_REG_IN(nr) (0x20 + (nr)) | |
84 | #define LM87_REG_IN_MAX(nr) (0x2B + (nr) * 2) | |
85 | #define LM87_REG_IN_MIN(nr) (0x2C + (nr) * 2) | |
86 | /* nr in 0..1 */ | |
87 | #define LM87_REG_AIN(nr) (0x28 + (nr)) | |
88 | #define LM87_REG_AIN_MIN(nr) (0x1A + (nr)) | |
89 | #define LM87_REG_AIN_MAX(nr) (0x3B + (nr)) | |
90 | ||
91 | static u8 LM87_REG_TEMP[3] = { 0x27, 0x26, 0x20 }; | |
92 | static u8 LM87_REG_TEMP_HIGH[3] = { 0x39, 0x37, 0x2B }; | |
93 | static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C }; | |
94 | ||
95 | #define LM87_REG_TEMP_HW_INT_LOCK 0x13 | |
96 | #define LM87_REG_TEMP_HW_EXT_LOCK 0x14 | |
97 | #define LM87_REG_TEMP_HW_INT 0x17 | |
98 | #define LM87_REG_TEMP_HW_EXT 0x18 | |
99 | ||
100 | /* nr in 0..1 */ | |
101 | #define LM87_REG_FAN(nr) (0x28 + (nr)) | |
102 | #define LM87_REG_FAN_MIN(nr) (0x3B + (nr)) | |
103 | #define LM87_REG_AOUT 0x19 | |
104 | ||
105 | #define LM87_REG_CONFIG 0x40 | |
106 | #define LM87_REG_CHANNEL_MODE 0x16 | |
107 | #define LM87_REG_VID_FAN_DIV 0x47 | |
108 | #define LM87_REG_VID4 0x49 | |
109 | ||
110 | #define LM87_REG_ALARMS1 0x41 | |
111 | #define LM87_REG_ALARMS2 0x42 | |
112 | ||
113 | #define LM87_REG_COMPANY_ID 0x3E | |
114 | #define LM87_REG_REVISION 0x3F | |
115 | ||
116 | /* | |
117 | * Conversions and various macros | |
118 | * The LM87 uses signed 8-bit values for temperatures. | |
119 | */ | |
120 | ||
c6370dbe GR |
121 | #define IN_FROM_REG(reg, scale) (((reg) * (scale) + 96) / 192) |
122 | #define IN_TO_REG(val, scale) ((val) <= 0 ? 0 : \ | |
12fa55cc | 123 | (val) >= (scale) * 255 / 192 ? 255 : \ |
c6370dbe | 124 | ((val) * 192 + (scale) / 2) / (scale)) |
1da177e4 LT |
125 | |
126 | #define TEMP_FROM_REG(reg) ((reg) * 1000) | |
127 | #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ | |
128 | (val) >= 126500 ? 127 : \ | |
c6370dbe GR |
129 | (((val) < 0 ? (val) - 500 : \ |
130 | (val) + 500) / 1000)) | |
1da177e4 | 131 | |
c6370dbe GR |
132 | #define FAN_FROM_REG(reg, div) ((reg) == 255 || (reg) == 0 ? 0 : \ |
133 | (1350000 + (reg)*(div) / 2) / ((reg) * (div))) | |
134 | #define FAN_TO_REG(val, div) ((val) * (div) * 255 <= 1350000 ? 255 : \ | |
135 | (1350000 + (val)*(div) / 2) / ((val) * (div))) | |
1da177e4 LT |
136 | |
137 | #define FAN_DIV_FROM_REG(reg) (1 << (reg)) | |
138 | ||
139 | /* analog out is 9.80mV/LSB */ | |
140 | #define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10) | |
141 | #define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \ | |
142 | (val) >= 2500 ? 255 : \ | |
143 | ((val) * 10 + 49) / 98) | |
144 | ||
145 | /* nr in 0..1 */ | |
146 | #define CHAN_NO_FAN(nr) (1 << (nr)) | |
147 | #define CHAN_TEMP3 (1 << 2) | |
148 | #define CHAN_VCC_5V (1 << 3) | |
889af3d5 | 149 | #define CHAN_NO_VID (1 << 7) |
1da177e4 | 150 | |
1da177e4 LT |
151 | /* |
152 | * Client data (each client gets its own) | |
153 | */ | |
154 | ||
155 | struct lm87_data { | |
9a61bf63 | 156 | struct mutex update_lock; |
1da177e4 LT |
157 | char valid; /* zero until following fields are valid */ |
158 | unsigned long last_updated; /* In jiffies */ | |
159 | ||
160 | u8 channel; /* register value */ | |
d2cac802 | 161 | u8 config; /* original register value */ |
1da177e4 LT |
162 | |
163 | u8 in[8]; /* register value */ | |
164 | u8 in_max[8]; /* register value */ | |
165 | u8 in_min[8]; /* register value */ | |
166 | u16 in_scale[8]; | |
167 | ||
168 | s8 temp[3]; /* register value */ | |
169 | s8 temp_high[3]; /* register value */ | |
170 | s8 temp_low[3]; /* register value */ | |
171 | s8 temp_crit_int; /* min of two register values */ | |
172 | s8 temp_crit_ext; /* min of two register values */ | |
173 | ||
174 | u8 fan[2]; /* register value */ | |
175 | u8 fan_min[2]; /* register value */ | |
176 | u8 fan_div[2]; /* register value, shifted right */ | |
177 | u8 aout; /* register value */ | |
178 | ||
179 | u16 alarms; /* register values, combined */ | |
180 | u8 vid; /* register values, combined */ | |
181 | u8 vrm; | |
00a0c905 JG |
182 | |
183 | const struct attribute_group *attr_groups[6]; | |
1da177e4 LT |
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 | { | |
00a0c905 | 198 | struct i2c_client *client = dev_get_drvdata(dev); |
8652a264 JD |
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 | 311 | { |
00a0c905 | 312 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 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 | 332 | { |
00a0c905 | 333 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 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 | 398 | { |
00a0c905 | 399 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 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 | 418 | { |
00a0c905 | 419 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 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 | ||
07a366cc JL |
447 | static ssize_t temp1_crit_show(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 | ||
07a366cc JL |
454 | static ssize_t temp2_crit_show(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 | ||
07a366cc JL |
461 | static DEVICE_ATTR_RO(temp1_crit); |
462 | static DEVICE_ATTR_RO(temp2_crit); | |
463 | static DEVICE_ATTR(temp3_crit, S_IRUGO, temp2_crit_show, NULL); | |
1da177e4 | 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 | 497 | { |
00a0c905 | 498 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 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 | 524 | { |
00a0c905 | 525 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 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 | ||
07a366cc | 588 | static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, |
c6370dbe | 589 | char *buf) |
1da177e4 LT |
590 | { |
591 | struct lm87_data *data = lm87_update_device(dev); | |
592 | return sprintf(buf, "%d\n", data->alarms); | |
593 | } | |
07a366cc | 594 | static DEVICE_ATTR_RO(alarms); |
1da177e4 | 595 | |
07a366cc JL |
596 | static ssize_t cpu0_vid_show(struct device *dev, |
597 | struct device_attribute *attr, 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 | } | |
07a366cc | 602 | static DEVICE_ATTR_RO(cpu0_vid); |
1da177e4 | 603 | |
07a366cc | 604 | static ssize_t vrm_show(struct device *dev, struct device_attribute *attr, |
c6370dbe | 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 | } | |
07a366cc JL |
610 | static ssize_t vrm_store(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 | } | |
07a366cc | 627 | static DEVICE_ATTR_RW(vrm); |
1da177e4 | 628 | |
07a366cc JL |
629 | static ssize_t aout_output_show(struct device *dev, |
630 | struct device_attribute *attr, 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 | } | |
07a366cc JL |
635 | static ssize_t aout_output_store(struct device *dev, |
636 | struct device_attribute *attr, | |
637 | const char *buf, size_t count) | |
1da177e4 | 638 | { |
00a0c905 | 639 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 640 | struct lm87_data *data = i2c_get_clientdata(client); |
c6370dbe GR |
641 | long val; |
642 | int err; | |
643 | ||
644 | err = kstrtol(buf, 10, &val); | |
645 | if (err) | |
646 | return err; | |
1da177e4 | 647 | |
9a61bf63 | 648 | mutex_lock(&data->update_lock); |
1da177e4 LT |
649 | data->aout = AOUT_TO_REG(val); |
650 | lm87_write_value(client, LM87_REG_AOUT, data->aout); | |
9a61bf63 | 651 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
652 | return count; |
653 | } | |
07a366cc | 654 | static DEVICE_ATTR_RW(aout_output); |
1da177e4 | 655 | |
c2803b98 JD |
656 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
657 | char *buf) | |
658 | { | |
659 | struct lm87_data *data = lm87_update_device(dev); | |
660 | int bitnr = to_sensor_dev_attr(attr)->index; | |
661 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
662 | } | |
663 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); | |
664 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); | |
665 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); | |
666 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
667 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); | |
668 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); | |
669 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); | |
670 | static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7); | |
671 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
672 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); | |
673 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5); | |
674 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); | |
675 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); | |
676 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14); | |
677 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); | |
678 | ||
1da177e4 LT |
679 | /* |
680 | * Real code | |
681 | */ | |
682 | ||
0501a381 | 683 | static struct attribute *lm87_attributes[] = { |
0e190b7f JD |
684 | &sensor_dev_attr_in1_input.dev_attr.attr, |
685 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
686 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
c2803b98 | 687 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
0e190b7f JD |
688 | &sensor_dev_attr_in2_input.dev_attr.attr, |
689 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
690 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
c2803b98 | 691 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
0e190b7f JD |
692 | &sensor_dev_attr_in3_input.dev_attr.attr, |
693 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
694 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
c2803b98 | 695 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
0e190b7f JD |
696 | &sensor_dev_attr_in4_input.dev_attr.attr, |
697 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
698 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
c2803b98 | 699 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
0501a381 | 700 | |
0e190b7f JD |
701 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
702 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
703 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
0501a381 | 704 | &dev_attr_temp1_crit.attr, |
c2803b98 | 705 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
0e190b7f JD |
706 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
707 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
708 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
0501a381 | 709 | &dev_attr_temp2_crit.attr, |
c2803b98 JD |
710 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
711 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
0501a381 MH |
712 | |
713 | &dev_attr_alarms.attr, | |
714 | &dev_attr_aout_output.attr, | |
715 | ||
716 | NULL | |
717 | }; | |
718 | ||
719 | static const struct attribute_group lm87_group = { | |
720 | .attrs = lm87_attributes, | |
721 | }; | |
722 | ||
073f1e6c | 723 | static struct attribute *lm87_attributes_in6[] = { |
0e190b7f JD |
724 | &sensor_dev_attr_in6_input.dev_attr.attr, |
725 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
726 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
c2803b98 | 727 | &sensor_dev_attr_in6_alarm.dev_attr.attr, |
073f1e6c GR |
728 | NULL |
729 | }; | |
730 | ||
731 | static const struct attribute_group lm87_group_in6 = { | |
732 | .attrs = lm87_attributes_in6, | |
733 | }; | |
0501a381 | 734 | |
073f1e6c | 735 | static struct attribute *lm87_attributes_fan1[] = { |
0e190b7f JD |
736 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
737 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
738 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
c2803b98 | 739 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
073f1e6c GR |
740 | NULL |
741 | }; | |
742 | ||
743 | static const struct attribute_group lm87_group_fan1 = { | |
744 | .attrs = lm87_attributes_fan1, | |
745 | }; | |
0501a381 | 746 | |
073f1e6c | 747 | static struct attribute *lm87_attributes_in7[] = { |
0e190b7f JD |
748 | &sensor_dev_attr_in7_input.dev_attr.attr, |
749 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
750 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
c2803b98 | 751 | &sensor_dev_attr_in7_alarm.dev_attr.attr, |
073f1e6c GR |
752 | NULL |
753 | }; | |
0501a381 | 754 | |
073f1e6c GR |
755 | static const struct attribute_group lm87_group_in7 = { |
756 | .attrs = lm87_attributes_in7, | |
757 | }; | |
758 | ||
759 | static struct attribute *lm87_attributes_fan2[] = { | |
0e190b7f JD |
760 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
761 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
762 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
c2803b98 | 763 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
073f1e6c GR |
764 | NULL |
765 | }; | |
0501a381 | 766 | |
073f1e6c GR |
767 | static const struct attribute_group lm87_group_fan2 = { |
768 | .attrs = lm87_attributes_fan2, | |
769 | }; | |
770 | ||
771 | static struct attribute *lm87_attributes_temp3[] = { | |
0e190b7f JD |
772 | &sensor_dev_attr_temp3_input.dev_attr.attr, |
773 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
774 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
0501a381 | 775 | &dev_attr_temp3_crit.attr, |
c2803b98 JD |
776 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
777 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
073f1e6c GR |
778 | NULL |
779 | }; | |
0501a381 | 780 | |
073f1e6c GR |
781 | static const struct attribute_group lm87_group_temp3 = { |
782 | .attrs = lm87_attributes_temp3, | |
783 | }; | |
784 | ||
785 | static struct attribute *lm87_attributes_in0_5[] = { | |
0e190b7f JD |
786 | &sensor_dev_attr_in0_input.dev_attr.attr, |
787 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
788 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
c2803b98 | 789 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
0e190b7f JD |
790 | &sensor_dev_attr_in5_input.dev_attr.attr, |
791 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
792 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
c2803b98 | 793 | &sensor_dev_attr_in5_alarm.dev_attr.attr, |
073f1e6c GR |
794 | NULL |
795 | }; | |
796 | ||
797 | static const struct attribute_group lm87_group_in0_5 = { | |
798 | .attrs = lm87_attributes_in0_5, | |
799 | }; | |
0501a381 | 800 | |
073f1e6c | 801 | static struct attribute *lm87_attributes_vid[] = { |
0501a381 MH |
802 | &dev_attr_cpu0_vid.attr, |
803 | &dev_attr_vrm.attr, | |
0501a381 MH |
804 | NULL |
805 | }; | |
806 | ||
073f1e6c GR |
807 | static const struct attribute_group lm87_group_vid = { |
808 | .attrs = lm87_attributes_vid, | |
0501a381 MH |
809 | }; |
810 | ||
a888420a | 811 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
8652a264 | 812 | static int lm87_detect(struct i2c_client *client, struct i2c_board_info *info) |
1da177e4 | 813 | { |
8652a264 | 814 | struct i2c_adapter *adapter = client->adapter; |
52df6440 JD |
815 | const char *name; |
816 | u8 cid, rev; | |
1da177e4 LT |
817 | |
818 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
a888420a | 819 | return -ENODEV; |
1da177e4 | 820 | |
8652a264 | 821 | if (lm87_read_value(client, LM87_REG_CONFIG) & 0x80) |
52df6440 | 822 | return -ENODEV; |
1da177e4 LT |
823 | |
824 | /* Now, we do the remaining detection. */ | |
8652a264 JD |
825 | cid = lm87_read_value(client, LM87_REG_COMPANY_ID); |
826 | rev = lm87_read_value(client, LM87_REG_REVISION); | |
52df6440 JD |
827 | |
828 | if (cid == 0x02 /* National Semiconductor */ | |
829 | && (rev >= 0x01 && rev <= 0x08)) | |
830 | name = "lm87"; | |
831 | else if (cid == 0x41 /* Analog Devices */ | |
832 | && (rev & 0xf0) == 0x10) | |
833 | name = "adm1024"; | |
834 | else { | |
835 | dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n", | |
8652a264 | 836 | client->addr); |
52df6440 | 837 | return -ENODEV; |
1da177e4 LT |
838 | } |
839 | ||
52df6440 | 840 | strlcpy(info->type, name, I2C_NAME_SIZE); |
a888420a JD |
841 | |
842 | return 0; | |
843 | } | |
844 | ||
00a0c905 | 845 | static void lm87_restore_config(void *arg) |
073f1e6c | 846 | { |
00a0c905 JG |
847 | struct i2c_client *client = arg; |
848 | struct lm87_data *data = i2c_get_clientdata(client); | |
849 | ||
850 | lm87_write_value(client, LM87_REG_CONFIG, data->config); | |
073f1e6c GR |
851 | } |
852 | ||
00a0c905 | 853 | static int lm87_init_client(struct i2c_client *client) |
8652a264 JD |
854 | { |
855 | struct lm87_data *data = i2c_get_clientdata(client); | |
00a0c905 | 856 | int rc; |
67043d18 MR |
857 | struct device_node *of_node = client->dev.of_node; |
858 | u8 val = 0; | |
859 | struct regulator *vcc = NULL; | |
860 | ||
861 | if (of_node) { | |
862 | if (of_property_read_bool(of_node, "has-temp3")) | |
863 | val |= CHAN_TEMP3; | |
864 | if (of_property_read_bool(of_node, "has-in6")) | |
865 | val |= CHAN_NO_FAN(0); | |
866 | if (of_property_read_bool(of_node, "has-in7")) | |
867 | val |= CHAN_NO_FAN(1); | |
868 | vcc = devm_regulator_get_optional(&client->dev, "vcc"); | |
869 | if (!IS_ERR(vcc)) { | |
870 | if (regulator_get_voltage(vcc) == 5000000) | |
871 | val |= CHAN_VCC_5V; | |
872 | } | |
873 | data->channel = val; | |
874 | lm87_write_value(client, | |
875 | LM87_REG_CHANNEL_MODE, data->channel); | |
876 | } else if (dev_get_platdata(&client->dev)) { | |
a8b3a3a5 | 877 | data->channel = *(u8 *)dev_get_platdata(&client->dev); |
8652a264 JD |
878 | lm87_write_value(client, |
879 | LM87_REG_CHANNEL_MODE, data->channel); | |
880 | } else { | |
881 | data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); | |
882 | } | |
883 | data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F; | |
884 | ||
00a0c905 JG |
885 | rc = devm_add_action(&client->dev, lm87_restore_config, client); |
886 | if (rc) | |
887 | return rc; | |
888 | ||
8652a264 JD |
889 | if (!(data->config & 0x01)) { |
890 | int i; | |
891 | ||
892 | /* Limits are left uninitialized after power-up */ | |
893 | for (i = 1; i < 6; i++) { | |
894 | lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); | |
895 | lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); | |
896 | } | |
897 | for (i = 0; i < 2; i++) { | |
898 | lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); | |
899 | lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); | |
900 | lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); | |
901 | lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); | |
902 | } | |
903 | if (data->channel & CHAN_TEMP3) { | |
904 | lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); | |
905 | lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); | |
906 | } else { | |
907 | lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); | |
908 | lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); | |
909 | } | |
910 | } | |
911 | ||
912 | /* Make sure Start is set and INT#_Clear is clear */ | |
913 | if ((data->config & 0x09) != 0x01) | |
914 | lm87_write_value(client, LM87_REG_CONFIG, | |
915 | (data->config & 0x77) | 0x01); | |
00a0c905 | 916 | return 0; |
8652a264 JD |
917 | } |
918 | ||
919 | static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id) | |
a888420a JD |
920 | { |
921 | struct lm87_data *data; | |
00a0c905 | 922 | struct device *hwmon_dev; |
a888420a | 923 | int err; |
00a0c905 | 924 | unsigned int group_tail = 0; |
a888420a | 925 | |
5ff512b4 GR |
926 | data = devm_kzalloc(&client->dev, sizeof(struct lm87_data), GFP_KERNEL); |
927 | if (!data) | |
928 | return -ENOMEM; | |
a888420a | 929 | |
8652a264 | 930 | i2c_set_clientdata(client, data); |
9a61bf63 | 931 | mutex_init(&data->update_lock); |
1da177e4 | 932 | |
1da177e4 | 933 | /* Initialize the LM87 chip */ |
00a0c905 JG |
934 | err = lm87_init_client(client); |
935 | if (err) | |
936 | return err; | |
1da177e4 LT |
937 | |
938 | data->in_scale[0] = 2500; | |
939 | data->in_scale[1] = 2700; | |
940 | data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; | |
941 | data->in_scale[3] = 5000; | |
942 | data->in_scale[4] = 12000; | |
943 | data->in_scale[5] = 2700; | |
944 | data->in_scale[6] = 1875; | |
945 | data->in_scale[7] = 1875; | |
946 | ||
00a0c905 JG |
947 | /* |
948 | * Construct the list of attributes, the list depends on the | |
949 | * configuration of the chip | |
950 | */ | |
951 | data->attr_groups[group_tail++] = &lm87_group; | |
952 | if (data->channel & CHAN_NO_FAN(0)) | |
953 | data->attr_groups[group_tail++] = &lm87_group_in6; | |
954 | else | |
955 | data->attr_groups[group_tail++] = &lm87_group_fan1; | |
956 | ||
957 | if (data->channel & CHAN_NO_FAN(1)) | |
958 | data->attr_groups[group_tail++] = &lm87_group_in7; | |
959 | else | |
960 | data->attr_groups[group_tail++] = &lm87_group_fan2; | |
961 | ||
962 | if (data->channel & CHAN_TEMP3) | |
963 | data->attr_groups[group_tail++] = &lm87_group_temp3; | |
964 | else | |
965 | data->attr_groups[group_tail++] = &lm87_group_in0_5; | |
1da177e4 LT |
966 | |
967 | if (!(data->channel & CHAN_NO_VID)) { | |
8a665a05 | 968 | data->vrm = vid_which_vrm(); |
00a0c905 | 969 | data->attr_groups[group_tail++] = &lm87_group_vid; |
0501a381 | 970 | } |
1da177e4 | 971 | |
00a0c905 JG |
972 | hwmon_dev = devm_hwmon_device_register_with_groups( |
973 | &client->dev, client->name, client, data->attr_groups); | |
974 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
1da177e4 LT |
975 | } |
976 | ||
8652a264 JD |
977 | /* |
978 | * Driver data (common to all clients) | |
979 | */ | |
1da177e4 | 980 | |
8652a264 | 981 | static const struct i2c_device_id lm87_id[] = { |
0439bf71 JMC |
982 | { "lm87", 0 }, |
983 | { "adm1024", 0 }, | |
8652a264 JD |
984 | { } |
985 | }; | |
986 | MODULE_DEVICE_TABLE(i2c, lm87_id); | |
1da177e4 | 987 | |
a02c24a3 JMC |
988 | static const struct of_device_id lm87_of_match[] = { |
989 | { .compatible = "ti,lm87" }, | |
990 | { .compatible = "adi,adm1024" }, | |
991 | { }, | |
992 | }; | |
993 | MODULE_DEVICE_TABLE(of, lm87_of_match); | |
994 | ||
8652a264 JD |
995 | static struct i2c_driver lm87_driver = { |
996 | .class = I2C_CLASS_HWMON, | |
997 | .driver = { | |
998 | .name = "lm87", | |
a02c24a3 | 999 | .of_match_table = lm87_of_match, |
8652a264 JD |
1000 | }, |
1001 | .probe = lm87_probe, | |
8652a264 JD |
1002 | .id_table = lm87_id, |
1003 | .detect = lm87_detect, | |
1004 | .address_list = normal_i2c, | |
1005 | }; | |
1da177e4 | 1006 | |
f0967eea | 1007 | module_i2c_driver(lm87_driver); |
1da177e4 | 1008 | |
7c81c60f | 1009 | MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de> and others"); |
1da177e4 LT |
1010 | MODULE_DESCRIPTION("LM87 driver"); |
1011 | MODULE_LICENSE("GPL"); |