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74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * lm87.c | |
4 | * | |
5 | * Copyright (C) 2000 Frodo Looijaard <frodol@dds.nl> | |
6 | * Philip Edelbrock <phil@netroedge.com> | |
7 | * Stephen Rousset <stephen.rousset@rocketlogix.com> | |
8 | * Dan Eaton <dan.eaton@rocketlogix.com> | |
7c81c60f | 9 | * Copyright (C) 2004-2008 Jean Delvare <jdelvare@suse.de> |
1da177e4 LT |
10 | * |
11 | * Original port to Linux 2.6 by Jeff Oliver. | |
12 | * | |
13 | * The LM87 is a sensor chip made by National Semiconductor. It monitors up | |
14 | * to 8 voltages (including its own power source), up to three temperatures | |
15 | * (its own plus up to two external ones) and up to two fans. The default | |
16 | * configuration is 6 voltages, two temperatures and two fans (see below). | |
17 | * Voltages are scaled internally with ratios such that the nominal value of | |
18 | * each voltage correspond to a register value of 192 (which means a | |
19 | * resolution of about 0.5% of the nominal value). Temperature values are | |
20 | * reported with a 1 deg resolution and a 3-4 deg accuracy. Complete | |
21 | * datasheet can be obtained from National's website at: | |
22 | * http://www.national.com/pf/LM/LM87.html | |
23 | * | |
24 | * Some functions share pins, so not all functions are available at the same | |
47064d64 BH |
25 | * time. Which are depends on the hardware setup. This driver normally |
26 | * assumes that firmware configured the chip correctly. Where this is not | |
27 | * the case, platform code must set the I2C client's platform_data to point | |
28 | * to a u8 value to be written to the channel register. | |
1da177e4 LT |
29 | * For reference, here is the list of exclusive functions: |
30 | * - in0+in5 (default) or temp3 | |
31 | * - fan1 (default) or in6 | |
32 | * - fan2 (default) or in7 | |
33 | * - VID lines (default) or IRQ lines (not handled by this driver) | |
34 | * | |
35 | * The LM87 additionally features an analog output, supposedly usable to | |
36 | * control the speed of a fan. All new chips use pulse width modulation | |
37 | * instead. The LM87 is the only hardware monitoring chipset I know of | |
38 | * which uses amplitude modulation. Be careful when using this feature. | |
39 | * | |
c7fa3737 JD |
40 | * This driver also supports the ADM1024, a sensor chip made by Analog |
41 | * Devices. That chip is fully compatible with the LM87. Complete | |
42 | * datasheet can be obtained from Analog's website at: | |
43 | * http://www.analog.com/en/prod/0,2877,ADM1024,00.html | |
1da177e4 LT |
44 | */ |
45 | ||
1da177e4 LT |
46 | #include <linux/module.h> |
47 | #include <linux/init.h> | |
48 | #include <linux/slab.h> | |
49 | #include <linux/jiffies.h> | |
50 | #include <linux/i2c.h> | |
943b0830 | 51 | #include <linux/hwmon.h> |
c2803b98 | 52 | #include <linux/hwmon-sysfs.h> |
303760b4 | 53 | #include <linux/hwmon-vid.h> |
943b0830 | 54 | #include <linux/err.h> |
9a61bf63 | 55 | #include <linux/mutex.h> |
67043d18 | 56 | #include <linux/regulator/consumer.h> |
1da177e4 LT |
57 | |
58 | /* | |
59 | * Addresses to scan | |
60 | * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e. | |
61 | */ | |
62 | ||
25e9c86d | 63 | static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; |
1da177e4 | 64 | |
1da177e4 LT |
65 | /* |
66 | * The LM87 registers | |
67 | */ | |
68 | ||
69 | /* nr in 0..5 */ | |
70 | #define LM87_REG_IN(nr) (0x20 + (nr)) | |
71 | #define LM87_REG_IN_MAX(nr) (0x2B + (nr) * 2) | |
72 | #define LM87_REG_IN_MIN(nr) (0x2C + (nr) * 2) | |
73 | /* nr in 0..1 */ | |
74 | #define LM87_REG_AIN(nr) (0x28 + (nr)) | |
75 | #define LM87_REG_AIN_MIN(nr) (0x1A + (nr)) | |
76 | #define LM87_REG_AIN_MAX(nr) (0x3B + (nr)) | |
77 | ||
78 | static u8 LM87_REG_TEMP[3] = { 0x27, 0x26, 0x20 }; | |
79 | static u8 LM87_REG_TEMP_HIGH[3] = { 0x39, 0x37, 0x2B }; | |
80 | static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C }; | |
81 | ||
82 | #define LM87_REG_TEMP_HW_INT_LOCK 0x13 | |
83 | #define LM87_REG_TEMP_HW_EXT_LOCK 0x14 | |
84 | #define LM87_REG_TEMP_HW_INT 0x17 | |
85 | #define LM87_REG_TEMP_HW_EXT 0x18 | |
86 | ||
87 | /* nr in 0..1 */ | |
88 | #define LM87_REG_FAN(nr) (0x28 + (nr)) | |
89 | #define LM87_REG_FAN_MIN(nr) (0x3B + (nr)) | |
90 | #define LM87_REG_AOUT 0x19 | |
91 | ||
92 | #define LM87_REG_CONFIG 0x40 | |
93 | #define LM87_REG_CHANNEL_MODE 0x16 | |
94 | #define LM87_REG_VID_FAN_DIV 0x47 | |
95 | #define LM87_REG_VID4 0x49 | |
96 | ||
97 | #define LM87_REG_ALARMS1 0x41 | |
98 | #define LM87_REG_ALARMS2 0x42 | |
99 | ||
100 | #define LM87_REG_COMPANY_ID 0x3E | |
101 | #define LM87_REG_REVISION 0x3F | |
102 | ||
103 | /* | |
104 | * Conversions and various macros | |
105 | * The LM87 uses signed 8-bit values for temperatures. | |
106 | */ | |
107 | ||
c6370dbe GR |
108 | #define IN_FROM_REG(reg, scale) (((reg) * (scale) + 96) / 192) |
109 | #define IN_TO_REG(val, scale) ((val) <= 0 ? 0 : \ | |
12fa55cc | 110 | (val) >= (scale) * 255 / 192 ? 255 : \ |
c6370dbe | 111 | ((val) * 192 + (scale) / 2) / (scale)) |
1da177e4 LT |
112 | |
113 | #define TEMP_FROM_REG(reg) ((reg) * 1000) | |
114 | #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ | |
115 | (val) >= 126500 ? 127 : \ | |
c6370dbe GR |
116 | (((val) < 0 ? (val) - 500 : \ |
117 | (val) + 500) / 1000)) | |
1da177e4 | 118 | |
c6370dbe GR |
119 | #define FAN_FROM_REG(reg, div) ((reg) == 255 || (reg) == 0 ? 0 : \ |
120 | (1350000 + (reg)*(div) / 2) / ((reg) * (div))) | |
121 | #define FAN_TO_REG(val, div) ((val) * (div) * 255 <= 1350000 ? 255 : \ | |
122 | (1350000 + (val)*(div) / 2) / ((val) * (div))) | |
1da177e4 LT |
123 | |
124 | #define FAN_DIV_FROM_REG(reg) (1 << (reg)) | |
125 | ||
126 | /* analog out is 9.80mV/LSB */ | |
127 | #define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10) | |
128 | #define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \ | |
129 | (val) >= 2500 ? 255 : \ | |
130 | ((val) * 10 + 49) / 98) | |
131 | ||
132 | /* nr in 0..1 */ | |
133 | #define CHAN_NO_FAN(nr) (1 << (nr)) | |
134 | #define CHAN_TEMP3 (1 << 2) | |
135 | #define CHAN_VCC_5V (1 << 3) | |
889af3d5 | 136 | #define CHAN_NO_VID (1 << 7) |
1da177e4 | 137 | |
1da177e4 LT |
138 | /* |
139 | * Client data (each client gets its own) | |
140 | */ | |
141 | ||
142 | struct lm87_data { | |
9a61bf63 | 143 | struct mutex update_lock; |
1da177e4 LT |
144 | char valid; /* zero until following fields are valid */ |
145 | unsigned long last_updated; /* In jiffies */ | |
146 | ||
147 | u8 channel; /* register value */ | |
d2cac802 | 148 | u8 config; /* original register value */ |
1da177e4 LT |
149 | |
150 | u8 in[8]; /* register value */ | |
151 | u8 in_max[8]; /* register value */ | |
152 | u8 in_min[8]; /* register value */ | |
153 | u16 in_scale[8]; | |
154 | ||
155 | s8 temp[3]; /* register value */ | |
156 | s8 temp_high[3]; /* register value */ | |
157 | s8 temp_low[3]; /* register value */ | |
158 | s8 temp_crit_int; /* min of two register values */ | |
159 | s8 temp_crit_ext; /* min of two register values */ | |
160 | ||
161 | u8 fan[2]; /* register value */ | |
162 | u8 fan_min[2]; /* register value */ | |
163 | u8 fan_div[2]; /* register value, shifted right */ | |
164 | u8 aout; /* register value */ | |
165 | ||
166 | u16 alarms; /* register values, combined */ | |
167 | u8 vid; /* register values, combined */ | |
168 | u8 vrm; | |
00a0c905 JG |
169 | |
170 | const struct attribute_group *attr_groups[6]; | |
1da177e4 LT |
171 | }; |
172 | ||
1da177e4 LT |
173 | static inline int lm87_read_value(struct i2c_client *client, u8 reg) |
174 | { | |
175 | return i2c_smbus_read_byte_data(client, reg); | |
176 | } | |
177 | ||
178 | static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) | |
179 | { | |
180 | return i2c_smbus_write_byte_data(client, reg, value); | |
181 | } | |
182 | ||
8652a264 JD |
183 | static struct lm87_data *lm87_update_device(struct device *dev) |
184 | { | |
00a0c905 | 185 | struct i2c_client *client = dev_get_drvdata(dev); |
8652a264 JD |
186 | struct lm87_data *data = i2c_get_clientdata(client); |
187 | ||
188 | mutex_lock(&data->update_lock); | |
189 | ||
190 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { | |
191 | int i, j; | |
192 | ||
193 | dev_dbg(&client->dev, "Updating data.\n"); | |
194 | ||
195 | i = (data->channel & CHAN_TEMP3) ? 1 : 0; | |
196 | j = (data->channel & CHAN_TEMP3) ? 5 : 6; | |
197 | for (; i < j; i++) { | |
198 | data->in[i] = lm87_read_value(client, | |
199 | LM87_REG_IN(i)); | |
200 | data->in_min[i] = lm87_read_value(client, | |
201 | LM87_REG_IN_MIN(i)); | |
202 | data->in_max[i] = lm87_read_value(client, | |
203 | LM87_REG_IN_MAX(i)); | |
204 | } | |
205 | ||
206 | for (i = 0; i < 2; i++) { | |
207 | if (data->channel & CHAN_NO_FAN(i)) { | |
208 | data->in[6+i] = lm87_read_value(client, | |
209 | LM87_REG_AIN(i)); | |
210 | data->in_max[6+i] = lm87_read_value(client, | |
211 | LM87_REG_AIN_MAX(i)); | |
212 | data->in_min[6+i] = lm87_read_value(client, | |
213 | LM87_REG_AIN_MIN(i)); | |
214 | ||
215 | } else { | |
216 | data->fan[i] = lm87_read_value(client, | |
217 | LM87_REG_FAN(i)); | |
218 | data->fan_min[i] = lm87_read_value(client, | |
219 | LM87_REG_FAN_MIN(i)); | |
220 | } | |
221 | } | |
222 | ||
223 | j = (data->channel & CHAN_TEMP3) ? 3 : 2; | |
224 | for (i = 0 ; i < j; i++) { | |
225 | data->temp[i] = lm87_read_value(client, | |
226 | LM87_REG_TEMP[i]); | |
227 | data->temp_high[i] = lm87_read_value(client, | |
228 | LM87_REG_TEMP_HIGH[i]); | |
229 | data->temp_low[i] = lm87_read_value(client, | |
230 | LM87_REG_TEMP_LOW[i]); | |
231 | } | |
232 | ||
233 | i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); | |
234 | j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); | |
235 | data->temp_crit_int = min(i, j); | |
236 | ||
237 | i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); | |
238 | j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); | |
239 | data->temp_crit_ext = min(i, j); | |
240 | ||
241 | i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); | |
242 | data->fan_div[0] = (i >> 4) & 0x03; | |
243 | data->fan_div[1] = (i >> 6) & 0x03; | |
244 | data->vid = (i & 0x0F) | |
245 | | (lm87_read_value(client, LM87_REG_VID4) & 0x01) | |
246 | << 4; | |
247 | ||
248 | data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) | |
249 | | (lm87_read_value(client, LM87_REG_ALARMS2) | |
250 | << 8); | |
251 | data->aout = lm87_read_value(client, LM87_REG_AOUT); | |
252 | ||
253 | data->last_updated = jiffies; | |
254 | data->valid = 1; | |
255 | } | |
256 | ||
257 | mutex_unlock(&data->update_lock); | |
258 | ||
259 | return data; | |
260 | } | |
261 | ||
262 | /* | |
263 | * Sysfs stuff | |
264 | */ | |
265 | ||
f6c93aeb GR |
266 | static ssize_t in_input_show(struct device *dev, |
267 | struct device_attribute *attr, char *buf) | |
0e190b7f JD |
268 | { |
269 | struct lm87_data *data = lm87_update_device(dev); | |
270 | int nr = to_sensor_dev_attr(attr)->index; | |
271 | ||
272 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in[nr], | |
273 | data->in_scale[nr])); | |
274 | } | |
275 | ||
f6c93aeb GR |
276 | static ssize_t in_min_show(struct device *dev, struct device_attribute *attr, |
277 | char *buf) | |
0e190b7f JD |
278 | { |
279 | struct lm87_data *data = lm87_update_device(dev); | |
280 | int nr = to_sensor_dev_attr(attr)->index; | |
281 | ||
282 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[nr], | |
283 | data->in_scale[nr])); | |
284 | } | |
285 | ||
f6c93aeb GR |
286 | static ssize_t in_max_show(struct device *dev, struct device_attribute *attr, |
287 | char *buf) | |
0e190b7f JD |
288 | { |
289 | struct lm87_data *data = lm87_update_device(dev); | |
290 | int nr = to_sensor_dev_attr(attr)->index; | |
291 | ||
292 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[nr], | |
293 | data->in_scale[nr])); | |
294 | } | |
295 | ||
f6c93aeb GR |
296 | static ssize_t in_min_store(struct device *dev, struct device_attribute *attr, |
297 | const char *buf, size_t count) | |
1da177e4 | 298 | { |
00a0c905 | 299 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 300 | struct lm87_data *data = i2c_get_clientdata(client); |
0e190b7f | 301 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
302 | long val; |
303 | int err; | |
304 | ||
305 | err = kstrtol(buf, 10, &val); | |
306 | if (err) | |
307 | return err; | |
1da177e4 | 308 | |
9a61bf63 | 309 | mutex_lock(&data->update_lock); |
1da177e4 | 310 | data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); |
c6370dbe GR |
311 | lm87_write_value(client, nr < 6 ? LM87_REG_IN_MIN(nr) : |
312 | LM87_REG_AIN_MIN(nr - 6), data->in_min[nr]); | |
9a61bf63 | 313 | mutex_unlock(&data->update_lock); |
c6370dbe | 314 | return count; |
1da177e4 LT |
315 | } |
316 | ||
f6c93aeb GR |
317 | static ssize_t in_max_store(struct device *dev, struct device_attribute *attr, |
318 | const char *buf, size_t count) | |
1da177e4 | 319 | { |
00a0c905 | 320 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 321 | struct lm87_data *data = i2c_get_clientdata(client); |
0e190b7f | 322 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
323 | long val; |
324 | int err; | |
325 | ||
326 | err = kstrtol(buf, 10, &val); | |
327 | if (err) | |
328 | return err; | |
1da177e4 | 329 | |
9a61bf63 | 330 | mutex_lock(&data->update_lock); |
1da177e4 | 331 | data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); |
c6370dbe GR |
332 | lm87_write_value(client, nr < 6 ? LM87_REG_IN_MAX(nr) : |
333 | LM87_REG_AIN_MAX(nr - 6), data->in_max[nr]); | |
9a61bf63 | 334 | mutex_unlock(&data->update_lock); |
c6370dbe | 335 | return count; |
1da177e4 LT |
336 | } |
337 | ||
f6c93aeb GR |
338 | static SENSOR_DEVICE_ATTR_RO(in0_input, in_input, 0); |
339 | static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); | |
340 | static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); | |
341 | static SENSOR_DEVICE_ATTR_RO(in1_input, in_input, 1); | |
342 | static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); | |
343 | static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); | |
344 | static SENSOR_DEVICE_ATTR_RO(in2_input, in_input, 2); | |
345 | static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); | |
346 | static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); | |
347 | static SENSOR_DEVICE_ATTR_RO(in3_input, in_input, 3); | |
348 | static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); | |
349 | static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); | |
350 | static SENSOR_DEVICE_ATTR_RO(in4_input, in_input, 4); | |
351 | static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); | |
352 | static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); | |
353 | static SENSOR_DEVICE_ATTR_RO(in5_input, in_input, 5); | |
354 | static SENSOR_DEVICE_ATTR_RW(in5_min, in_min, 5); | |
355 | static SENSOR_DEVICE_ATTR_RW(in5_max, in_max, 5); | |
356 | static SENSOR_DEVICE_ATTR_RO(in6_input, in_input, 6); | |
357 | static SENSOR_DEVICE_ATTR_RW(in6_min, in_min, 6); | |
358 | static SENSOR_DEVICE_ATTR_RW(in6_max, in_max, 6); | |
359 | static SENSOR_DEVICE_ATTR_RO(in7_input, in_input, 7); | |
360 | static SENSOR_DEVICE_ATTR_RW(in7_min, in_min, 7); | |
361 | static SENSOR_DEVICE_ATTR_RW(in7_max, in_max, 7); | |
362 | ||
363 | static ssize_t temp_input_show(struct device *dev, | |
0e190b7f JD |
364 | struct device_attribute *attr, char *buf) |
365 | { | |
366 | struct lm87_data *data = lm87_update_device(dev); | |
367 | int nr = to_sensor_dev_attr(attr)->index; | |
368 | ||
369 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
370 | } | |
371 | ||
f6c93aeb | 372 | static ssize_t temp_low_show(struct device *dev, |
0e190b7f JD |
373 | struct device_attribute *attr, char *buf) |
374 | { | |
375 | struct lm87_data *data = lm87_update_device(dev); | |
376 | int nr = to_sensor_dev_attr(attr)->index; | |
377 | ||
378 | return sprintf(buf, "%d\n", | |
379 | TEMP_FROM_REG(data->temp_low[nr])); | |
380 | } | |
381 | ||
f6c93aeb | 382 | static ssize_t temp_high_show(struct device *dev, |
0e190b7f JD |
383 | struct device_attribute *attr, char *buf) |
384 | { | |
385 | struct lm87_data *data = lm87_update_device(dev); | |
386 | int nr = to_sensor_dev_attr(attr)->index; | |
387 | ||
388 | return sprintf(buf, "%d\n", | |
389 | TEMP_FROM_REG(data->temp_high[nr])); | |
390 | } | |
391 | ||
f6c93aeb GR |
392 | static ssize_t temp_low_store(struct device *dev, |
393 | struct device_attribute *attr, const char *buf, | |
394 | size_t count) | |
1da177e4 | 395 | { |
00a0c905 | 396 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 397 | struct lm87_data *data = i2c_get_clientdata(client); |
0e190b7f | 398 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
399 | long val; |
400 | int err; | |
401 | ||
402 | err = kstrtol(buf, 10, &val); | |
403 | if (err) | |
404 | return err; | |
1da177e4 | 405 | |
9a61bf63 | 406 | mutex_lock(&data->update_lock); |
1da177e4 LT |
407 | data->temp_low[nr] = TEMP_TO_REG(val); |
408 | lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); | |
9a61bf63 | 409 | mutex_unlock(&data->update_lock); |
c6370dbe | 410 | return count; |
1da177e4 LT |
411 | } |
412 | ||
f6c93aeb GR |
413 | static ssize_t temp_high_store(struct device *dev, |
414 | struct device_attribute *attr, const char *buf, | |
415 | size_t count) | |
1da177e4 | 416 | { |
00a0c905 | 417 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 418 | struct lm87_data *data = i2c_get_clientdata(client); |
0e190b7f | 419 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
420 | long val; |
421 | int err; | |
422 | ||
423 | err = kstrtol(buf, 10, &val); | |
424 | if (err) | |
425 | return err; | |
1da177e4 | 426 | |
9a61bf63 | 427 | mutex_lock(&data->update_lock); |
1da177e4 LT |
428 | data->temp_high[nr] = TEMP_TO_REG(val); |
429 | lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); | |
9a61bf63 | 430 | mutex_unlock(&data->update_lock); |
c6370dbe | 431 | return count; |
1da177e4 LT |
432 | } |
433 | ||
f6c93aeb GR |
434 | static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0); |
435 | static SENSOR_DEVICE_ATTR_RW(temp1_min, temp_low, 0); | |
436 | static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_high, 0); | |
437 | static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1); | |
438 | static SENSOR_DEVICE_ATTR_RW(temp2_min, temp_low, 1); | |
439 | static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_high, 1); | |
440 | static SENSOR_DEVICE_ATTR_RO(temp3_input, temp_input, 2); | |
441 | static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_low, 2); | |
442 | static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_high, 2); | |
1da177e4 | 443 | |
07a366cc JL |
444 | static ssize_t temp1_crit_show(struct device *dev, |
445 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
446 | { |
447 | struct lm87_data *data = lm87_update_device(dev); | |
448 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); | |
449 | } | |
450 | ||
07a366cc JL |
451 | static ssize_t temp2_crit_show(struct device *dev, |
452 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
453 | { |
454 | struct lm87_data *data = lm87_update_device(dev); | |
455 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); | |
456 | } | |
457 | ||
07a366cc JL |
458 | static DEVICE_ATTR_RO(temp1_crit); |
459 | static DEVICE_ATTR_RO(temp2_crit); | |
f6c93aeb | 460 | static DEVICE_ATTR(temp3_crit, 0444, temp2_crit_show, NULL); |
1da177e4 | 461 | |
f6c93aeb | 462 | static ssize_t fan_input_show(struct device *dev, |
0e190b7f JD |
463 | struct device_attribute *attr, char *buf) |
464 | { | |
465 | struct lm87_data *data = lm87_update_device(dev); | |
466 | int nr = to_sensor_dev_attr(attr)->index; | |
467 | ||
468 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], | |
469 | FAN_DIV_FROM_REG(data->fan_div[nr]))); | |
470 | } | |
471 | ||
f6c93aeb GR |
472 | static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, |
473 | char *buf) | |
0e190b7f JD |
474 | { |
475 | struct lm87_data *data = lm87_update_device(dev); | |
476 | int nr = to_sensor_dev_attr(attr)->index; | |
477 | ||
478 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], | |
479 | FAN_DIV_FROM_REG(data->fan_div[nr]))); | |
480 | } | |
481 | ||
f6c93aeb GR |
482 | static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr, |
483 | char *buf) | |
0e190b7f JD |
484 | { |
485 | struct lm87_data *data = lm87_update_device(dev); | |
486 | int nr = to_sensor_dev_attr(attr)->index; | |
487 | ||
488 | return sprintf(buf, "%d\n", | |
489 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
490 | } | |
491 | ||
f6c93aeb GR |
492 | static ssize_t fan_min_store(struct device *dev, |
493 | struct device_attribute *attr, const char *buf, | |
494 | size_t count) | |
1da177e4 | 495 | { |
00a0c905 | 496 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 497 | struct lm87_data *data = i2c_get_clientdata(client); |
0e190b7f | 498 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
499 | long val; |
500 | int err; | |
501 | ||
502 | err = kstrtol(buf, 10, &val); | |
503 | if (err) | |
504 | return err; | |
1da177e4 | 505 | |
9a61bf63 | 506 | mutex_lock(&data->update_lock); |
1da177e4 LT |
507 | data->fan_min[nr] = FAN_TO_REG(val, |
508 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
509 | lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 510 | mutex_unlock(&data->update_lock); |
c6370dbe | 511 | return count; |
1da177e4 LT |
512 | } |
513 | ||
c6370dbe GR |
514 | /* |
515 | * Note: we save and restore the fan minimum here, because its value is | |
516 | * determined in part by the fan clock divider. This follows the principle | |
517 | * of least surprise; the user doesn't expect the fan minimum to change just | |
518 | * because the divider changed. | |
519 | */ | |
f6c93aeb GR |
520 | static ssize_t fan_div_store(struct device *dev, |
521 | struct device_attribute *attr, const char *buf, | |
522 | size_t count) | |
1da177e4 | 523 | { |
00a0c905 | 524 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 525 | struct lm87_data *data = i2c_get_clientdata(client); |
0e190b7f | 526 | int nr = to_sensor_dev_attr(attr)->index; |
c6370dbe GR |
527 | long val; |
528 | int err; | |
1da177e4 LT |
529 | unsigned long min; |
530 | u8 reg; | |
531 | ||
c6370dbe GR |
532 | err = kstrtol(buf, 10, &val); |
533 | if (err) | |
534 | return err; | |
535 | ||
9a61bf63 | 536 | mutex_lock(&data->update_lock); |
1da177e4 LT |
537 | min = FAN_FROM_REG(data->fan_min[nr], |
538 | FAN_DIV_FROM_REG(data->fan_div[nr])); | |
539 | ||
540 | switch (val) { | |
c6370dbe GR |
541 | case 1: |
542 | data->fan_div[nr] = 0; | |
543 | break; | |
544 | case 2: | |
545 | data->fan_div[nr] = 1; | |
546 | break; | |
547 | case 4: | |
548 | data->fan_div[nr] = 2; | |
549 | break; | |
550 | case 8: | |
551 | data->fan_div[nr] = 3; | |
552 | break; | |
1da177e4 | 553 | default: |
9a61bf63 | 554 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
555 | return -EINVAL; |
556 | } | |
557 | ||
558 | reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); | |
559 | switch (nr) { | |
560 | case 0: | |
561 | reg = (reg & 0xCF) | (data->fan_div[0] << 4); | |
562 | break; | |
563 | case 1: | |
564 | reg = (reg & 0x3F) | (data->fan_div[1] << 6); | |
565 | break; | |
566 | } | |
567 | lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); | |
568 | ||
569 | data->fan_min[nr] = FAN_TO_REG(min, val); | |
570 | lm87_write_value(client, LM87_REG_FAN_MIN(nr), | |
571 | data->fan_min[nr]); | |
9a61bf63 | 572 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
573 | |
574 | return count; | |
575 | } | |
576 | ||
f6c93aeb GR |
577 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0); |
578 | static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); | |
579 | static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); | |
580 | static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1); | |
581 | static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); | |
582 | static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); | |
1da177e4 | 583 | |
07a366cc | 584 | static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, |
c6370dbe | 585 | char *buf) |
1da177e4 LT |
586 | { |
587 | struct lm87_data *data = lm87_update_device(dev); | |
588 | return sprintf(buf, "%d\n", data->alarms); | |
589 | } | |
07a366cc | 590 | static DEVICE_ATTR_RO(alarms); |
1da177e4 | 591 | |
07a366cc JL |
592 | static ssize_t cpu0_vid_show(struct device *dev, |
593 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
594 | { |
595 | struct lm87_data *data = lm87_update_device(dev); | |
596 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); | |
597 | } | |
07a366cc | 598 | static DEVICE_ATTR_RO(cpu0_vid); |
1da177e4 | 599 | |
07a366cc | 600 | static ssize_t vrm_show(struct device *dev, struct device_attribute *attr, |
c6370dbe | 601 | char *buf) |
1da177e4 | 602 | { |
90d6619a | 603 | struct lm87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
604 | return sprintf(buf, "%d\n", data->vrm); |
605 | } | |
07a366cc JL |
606 | static ssize_t vrm_store(struct device *dev, struct device_attribute *attr, |
607 | const char *buf, size_t count) | |
1da177e4 | 608 | { |
8f74efe8 | 609 | struct lm87_data *data = dev_get_drvdata(dev); |
c6370dbe GR |
610 | unsigned long val; |
611 | int err; | |
612 | ||
613 | err = kstrtoul(buf, 10, &val); | |
614 | if (err) | |
615 | return err; | |
fa642d9d AL |
616 | |
617 | if (val > 255) | |
618 | return -EINVAL; | |
619 | ||
c6370dbe | 620 | data->vrm = val; |
1da177e4 LT |
621 | return count; |
622 | } | |
07a366cc | 623 | static DEVICE_ATTR_RW(vrm); |
1da177e4 | 624 | |
07a366cc JL |
625 | static ssize_t aout_output_show(struct device *dev, |
626 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
627 | { |
628 | struct lm87_data *data = lm87_update_device(dev); | |
629 | return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); | |
630 | } | |
07a366cc JL |
631 | static ssize_t aout_output_store(struct device *dev, |
632 | struct device_attribute *attr, | |
633 | const char *buf, size_t count) | |
1da177e4 | 634 | { |
00a0c905 | 635 | struct i2c_client *client = dev_get_drvdata(dev); |
1da177e4 | 636 | struct lm87_data *data = i2c_get_clientdata(client); |
c6370dbe GR |
637 | long val; |
638 | int err; | |
639 | ||
640 | err = kstrtol(buf, 10, &val); | |
641 | if (err) | |
642 | return err; | |
1da177e4 | 643 | |
9a61bf63 | 644 | mutex_lock(&data->update_lock); |
1da177e4 LT |
645 | data->aout = AOUT_TO_REG(val); |
646 | lm87_write_value(client, LM87_REG_AOUT, data->aout); | |
9a61bf63 | 647 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
648 | return count; |
649 | } | |
07a366cc | 650 | static DEVICE_ATTR_RW(aout_output); |
1da177e4 | 651 | |
f6c93aeb | 652 | static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, |
c2803b98 JD |
653 | char *buf) |
654 | { | |
655 | struct lm87_data *data = lm87_update_device(dev); | |
656 | int bitnr = to_sensor_dev_attr(attr)->index; | |
657 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
658 | } | |
f6c93aeb GR |
659 | static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); |
660 | static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); | |
661 | static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); | |
662 | static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); | |
663 | static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 8); | |
664 | static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 9); | |
665 | static SENSOR_DEVICE_ATTR_RO(in6_alarm, alarm, 6); | |
666 | static SENSOR_DEVICE_ATTR_RO(in7_alarm, alarm, 7); | |
667 | static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4); | |
668 | static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 5); | |
669 | static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, 5); | |
670 | static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 6); | |
671 | static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 7); | |
672 | static SENSOR_DEVICE_ATTR_RO(temp2_fault, alarm, 14); | |
673 | static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, 15); | |
c2803b98 | 674 | |
1da177e4 LT |
675 | /* |
676 | * Real code | |
677 | */ | |
678 | ||
0501a381 | 679 | static struct attribute *lm87_attributes[] = { |
0e190b7f JD |
680 | &sensor_dev_attr_in1_input.dev_attr.attr, |
681 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
682 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
c2803b98 | 683 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
0e190b7f JD |
684 | &sensor_dev_attr_in2_input.dev_attr.attr, |
685 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
686 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
c2803b98 | 687 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
0e190b7f JD |
688 | &sensor_dev_attr_in3_input.dev_attr.attr, |
689 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
690 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
c2803b98 | 691 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
0e190b7f JD |
692 | &sensor_dev_attr_in4_input.dev_attr.attr, |
693 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
694 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
c2803b98 | 695 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
0501a381 | 696 | |
0e190b7f JD |
697 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
698 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
699 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
0501a381 | 700 | &dev_attr_temp1_crit.attr, |
c2803b98 | 701 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
0e190b7f JD |
702 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
703 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
704 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
0501a381 | 705 | &dev_attr_temp2_crit.attr, |
c2803b98 JD |
706 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
707 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
0501a381 MH |
708 | |
709 | &dev_attr_alarms.attr, | |
710 | &dev_attr_aout_output.attr, | |
711 | ||
712 | NULL | |
713 | }; | |
714 | ||
715 | static const struct attribute_group lm87_group = { | |
716 | .attrs = lm87_attributes, | |
717 | }; | |
718 | ||
073f1e6c | 719 | static struct attribute *lm87_attributes_in6[] = { |
0e190b7f JD |
720 | &sensor_dev_attr_in6_input.dev_attr.attr, |
721 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
722 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
c2803b98 | 723 | &sensor_dev_attr_in6_alarm.dev_attr.attr, |
073f1e6c GR |
724 | NULL |
725 | }; | |
726 | ||
727 | static const struct attribute_group lm87_group_in6 = { | |
728 | .attrs = lm87_attributes_in6, | |
729 | }; | |
0501a381 | 730 | |
073f1e6c | 731 | static struct attribute *lm87_attributes_fan1[] = { |
0e190b7f JD |
732 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
733 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
734 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
c2803b98 | 735 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
073f1e6c GR |
736 | NULL |
737 | }; | |
738 | ||
739 | static const struct attribute_group lm87_group_fan1 = { | |
740 | .attrs = lm87_attributes_fan1, | |
741 | }; | |
0501a381 | 742 | |
073f1e6c | 743 | static struct attribute *lm87_attributes_in7[] = { |
0e190b7f JD |
744 | &sensor_dev_attr_in7_input.dev_attr.attr, |
745 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
746 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
c2803b98 | 747 | &sensor_dev_attr_in7_alarm.dev_attr.attr, |
073f1e6c GR |
748 | NULL |
749 | }; | |
0501a381 | 750 | |
073f1e6c GR |
751 | static const struct attribute_group lm87_group_in7 = { |
752 | .attrs = lm87_attributes_in7, | |
753 | }; | |
754 | ||
755 | static struct attribute *lm87_attributes_fan2[] = { | |
0e190b7f JD |
756 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
757 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
758 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
c2803b98 | 759 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
073f1e6c GR |
760 | NULL |
761 | }; | |
0501a381 | 762 | |
073f1e6c GR |
763 | static const struct attribute_group lm87_group_fan2 = { |
764 | .attrs = lm87_attributes_fan2, | |
765 | }; | |
766 | ||
767 | static struct attribute *lm87_attributes_temp3[] = { | |
0e190b7f JD |
768 | &sensor_dev_attr_temp3_input.dev_attr.attr, |
769 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
770 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
0501a381 | 771 | &dev_attr_temp3_crit.attr, |
c2803b98 JD |
772 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
773 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
073f1e6c GR |
774 | NULL |
775 | }; | |
0501a381 | 776 | |
073f1e6c GR |
777 | static const struct attribute_group lm87_group_temp3 = { |
778 | .attrs = lm87_attributes_temp3, | |
779 | }; | |
780 | ||
781 | static struct attribute *lm87_attributes_in0_5[] = { | |
0e190b7f JD |
782 | &sensor_dev_attr_in0_input.dev_attr.attr, |
783 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
784 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
c2803b98 | 785 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
0e190b7f JD |
786 | &sensor_dev_attr_in5_input.dev_attr.attr, |
787 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
788 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
c2803b98 | 789 | &sensor_dev_attr_in5_alarm.dev_attr.attr, |
073f1e6c GR |
790 | NULL |
791 | }; | |
792 | ||
793 | static const struct attribute_group lm87_group_in0_5 = { | |
794 | .attrs = lm87_attributes_in0_5, | |
795 | }; | |
0501a381 | 796 | |
073f1e6c | 797 | static struct attribute *lm87_attributes_vid[] = { |
0501a381 MH |
798 | &dev_attr_cpu0_vid.attr, |
799 | &dev_attr_vrm.attr, | |
0501a381 MH |
800 | NULL |
801 | }; | |
802 | ||
073f1e6c GR |
803 | static const struct attribute_group lm87_group_vid = { |
804 | .attrs = lm87_attributes_vid, | |
0501a381 MH |
805 | }; |
806 | ||
a888420a | 807 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
8652a264 | 808 | static int lm87_detect(struct i2c_client *client, struct i2c_board_info *info) |
1da177e4 | 809 | { |
8652a264 | 810 | struct i2c_adapter *adapter = client->adapter; |
52df6440 JD |
811 | const char *name; |
812 | u8 cid, rev; | |
1da177e4 LT |
813 | |
814 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
a888420a | 815 | return -ENODEV; |
1da177e4 | 816 | |
8652a264 | 817 | if (lm87_read_value(client, LM87_REG_CONFIG) & 0x80) |
52df6440 | 818 | return -ENODEV; |
1da177e4 LT |
819 | |
820 | /* Now, we do the remaining detection. */ | |
8652a264 JD |
821 | cid = lm87_read_value(client, LM87_REG_COMPANY_ID); |
822 | rev = lm87_read_value(client, LM87_REG_REVISION); | |
52df6440 JD |
823 | |
824 | if (cid == 0x02 /* National Semiconductor */ | |
825 | && (rev >= 0x01 && rev <= 0x08)) | |
826 | name = "lm87"; | |
827 | else if (cid == 0x41 /* Analog Devices */ | |
828 | && (rev & 0xf0) == 0x10) | |
829 | name = "adm1024"; | |
830 | else { | |
831 | dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n", | |
8652a264 | 832 | client->addr); |
52df6440 | 833 | return -ENODEV; |
1da177e4 LT |
834 | } |
835 | ||
52df6440 | 836 | strlcpy(info->type, name, I2C_NAME_SIZE); |
a888420a JD |
837 | |
838 | return 0; | |
839 | } | |
840 | ||
00a0c905 | 841 | static void lm87_restore_config(void *arg) |
073f1e6c | 842 | { |
00a0c905 JG |
843 | struct i2c_client *client = arg; |
844 | struct lm87_data *data = i2c_get_clientdata(client); | |
845 | ||
846 | lm87_write_value(client, LM87_REG_CONFIG, data->config); | |
073f1e6c GR |
847 | } |
848 | ||
00a0c905 | 849 | static int lm87_init_client(struct i2c_client *client) |
8652a264 JD |
850 | { |
851 | struct lm87_data *data = i2c_get_clientdata(client); | |
00a0c905 | 852 | int rc; |
67043d18 MR |
853 | struct device_node *of_node = client->dev.of_node; |
854 | u8 val = 0; | |
855 | struct regulator *vcc = NULL; | |
856 | ||
857 | if (of_node) { | |
858 | if (of_property_read_bool(of_node, "has-temp3")) | |
859 | val |= CHAN_TEMP3; | |
860 | if (of_property_read_bool(of_node, "has-in6")) | |
861 | val |= CHAN_NO_FAN(0); | |
862 | if (of_property_read_bool(of_node, "has-in7")) | |
863 | val |= CHAN_NO_FAN(1); | |
864 | vcc = devm_regulator_get_optional(&client->dev, "vcc"); | |
865 | if (!IS_ERR(vcc)) { | |
866 | if (regulator_get_voltage(vcc) == 5000000) | |
867 | val |= CHAN_VCC_5V; | |
868 | } | |
869 | data->channel = val; | |
870 | lm87_write_value(client, | |
871 | LM87_REG_CHANNEL_MODE, data->channel); | |
872 | } else if (dev_get_platdata(&client->dev)) { | |
a8b3a3a5 | 873 | data->channel = *(u8 *)dev_get_platdata(&client->dev); |
8652a264 JD |
874 | lm87_write_value(client, |
875 | LM87_REG_CHANNEL_MODE, data->channel); | |
876 | } else { | |
877 | data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); | |
878 | } | |
879 | data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F; | |
880 | ||
00a0c905 JG |
881 | rc = devm_add_action(&client->dev, lm87_restore_config, client); |
882 | if (rc) | |
883 | return rc; | |
884 | ||
8652a264 JD |
885 | if (!(data->config & 0x01)) { |
886 | int i; | |
887 | ||
888 | /* Limits are left uninitialized after power-up */ | |
889 | for (i = 1; i < 6; i++) { | |
890 | lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); | |
891 | lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); | |
892 | } | |
893 | for (i = 0; i < 2; i++) { | |
894 | lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); | |
895 | lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); | |
896 | lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); | |
897 | lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); | |
898 | } | |
899 | if (data->channel & CHAN_TEMP3) { | |
900 | lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); | |
901 | lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); | |
902 | } else { | |
903 | lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); | |
904 | lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); | |
905 | } | |
906 | } | |
907 | ||
908 | /* Make sure Start is set and INT#_Clear is clear */ | |
909 | if ((data->config & 0x09) != 0x01) | |
910 | lm87_write_value(client, LM87_REG_CONFIG, | |
911 | (data->config & 0x77) | 0x01); | |
00a0c905 | 912 | return 0; |
8652a264 JD |
913 | } |
914 | ||
915 | static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id) | |
a888420a JD |
916 | { |
917 | struct lm87_data *data; | |
00a0c905 | 918 | struct device *hwmon_dev; |
a888420a | 919 | int err; |
00a0c905 | 920 | unsigned int group_tail = 0; |
a888420a | 921 | |
5ff512b4 GR |
922 | data = devm_kzalloc(&client->dev, sizeof(struct lm87_data), GFP_KERNEL); |
923 | if (!data) | |
924 | return -ENOMEM; | |
a888420a | 925 | |
8652a264 | 926 | i2c_set_clientdata(client, data); |
9a61bf63 | 927 | mutex_init(&data->update_lock); |
1da177e4 | 928 | |
1da177e4 | 929 | /* Initialize the LM87 chip */ |
00a0c905 JG |
930 | err = lm87_init_client(client); |
931 | if (err) | |
932 | return err; | |
1da177e4 LT |
933 | |
934 | data->in_scale[0] = 2500; | |
935 | data->in_scale[1] = 2700; | |
936 | data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; | |
937 | data->in_scale[3] = 5000; | |
938 | data->in_scale[4] = 12000; | |
939 | data->in_scale[5] = 2700; | |
940 | data->in_scale[6] = 1875; | |
941 | data->in_scale[7] = 1875; | |
942 | ||
00a0c905 JG |
943 | /* |
944 | * Construct the list of attributes, the list depends on the | |
945 | * configuration of the chip | |
946 | */ | |
947 | data->attr_groups[group_tail++] = &lm87_group; | |
948 | if (data->channel & CHAN_NO_FAN(0)) | |
949 | data->attr_groups[group_tail++] = &lm87_group_in6; | |
950 | else | |
951 | data->attr_groups[group_tail++] = &lm87_group_fan1; | |
952 | ||
953 | if (data->channel & CHAN_NO_FAN(1)) | |
954 | data->attr_groups[group_tail++] = &lm87_group_in7; | |
955 | else | |
956 | data->attr_groups[group_tail++] = &lm87_group_fan2; | |
957 | ||
958 | if (data->channel & CHAN_TEMP3) | |
959 | data->attr_groups[group_tail++] = &lm87_group_temp3; | |
960 | else | |
961 | data->attr_groups[group_tail++] = &lm87_group_in0_5; | |
1da177e4 LT |
962 | |
963 | if (!(data->channel & CHAN_NO_VID)) { | |
8a665a05 | 964 | data->vrm = vid_which_vrm(); |
00a0c905 | 965 | data->attr_groups[group_tail++] = &lm87_group_vid; |
0501a381 | 966 | } |
1da177e4 | 967 | |
00a0c905 JG |
968 | hwmon_dev = devm_hwmon_device_register_with_groups( |
969 | &client->dev, client->name, client, data->attr_groups); | |
970 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
1da177e4 LT |
971 | } |
972 | ||
8652a264 JD |
973 | /* |
974 | * Driver data (common to all clients) | |
975 | */ | |
1da177e4 | 976 | |
8652a264 | 977 | static const struct i2c_device_id lm87_id[] = { |
0439bf71 JMC |
978 | { "lm87", 0 }, |
979 | { "adm1024", 0 }, | |
8652a264 JD |
980 | { } |
981 | }; | |
982 | MODULE_DEVICE_TABLE(i2c, lm87_id); | |
1da177e4 | 983 | |
a02c24a3 JMC |
984 | static const struct of_device_id lm87_of_match[] = { |
985 | { .compatible = "ti,lm87" }, | |
986 | { .compatible = "adi,adm1024" }, | |
987 | { }, | |
988 | }; | |
989 | MODULE_DEVICE_TABLE(of, lm87_of_match); | |
990 | ||
8652a264 JD |
991 | static struct i2c_driver lm87_driver = { |
992 | .class = I2C_CLASS_HWMON, | |
993 | .driver = { | |
994 | .name = "lm87", | |
a02c24a3 | 995 | .of_match_table = lm87_of_match, |
8652a264 JD |
996 | }, |
997 | .probe = lm87_probe, | |
8652a264 JD |
998 | .id_table = lm87_id, |
999 | .detect = lm87_detect, | |
1000 | .address_list = normal_i2c, | |
1001 | }; | |
1da177e4 | 1002 | |
f0967eea | 1003 | module_i2c_driver(lm87_driver); |
1da177e4 | 1004 | |
7c81c60f | 1005 | MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de> and others"); |
1da177e4 LT |
1006 | MODULE_DESCRIPTION("LM87 driver"); |
1007 | MODULE_LICENSE("GPL"); |