Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
85a0c0d1 GR |
2 | * smsc47m1.c - Part of lm_sensors, Linux kernel modules |
3 | * for hardware monitoring | |
4 | * | |
5 | * Supports the SMSC LPC47B27x, LPC47M10x, LPC47M112, LPC47M13x, | |
6 | * LPC47M14x, LPC47M15x, LPC47M192, LPC47M292 and LPC47M997 | |
7 | * Super-I/O chips. | |
8 | * | |
9 | * Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com> | |
7c81c60f | 10 | * Copyright (C) 2004-2007 Jean Delvare <jdelvare@suse.de> |
85a0c0d1 GR |
11 | * Ported to Linux 2.6 by Gabriele Gorla <gorlik@yahoo.com> |
12 | * and Jean Delvare | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | */ | |
1da177e4 | 28 | |
512504e9 JP |
29 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
30 | ||
1da177e4 LT |
31 | #include <linux/module.h> |
32 | #include <linux/slab.h> | |
33 | #include <linux/ioport.h> | |
34 | #include <linux/jiffies.h> | |
51f2cca1 | 35 | #include <linux/platform_device.h> |
943b0830 | 36 | #include <linux/hwmon.h> |
e84cfbcb | 37 | #include <linux/hwmon-sysfs.h> |
943b0830 | 38 | #include <linux/err.h> |
1da177e4 | 39 | #include <linux/init.h> |
9a61bf63 | 40 | #include <linux/mutex.h> |
ce8c6ce1 | 41 | #include <linux/sysfs.h> |
b9acb64a | 42 | #include <linux/acpi.h> |
6055fae8 | 43 | #include <linux/io.h> |
1da177e4 | 44 | |
67b671bc JD |
45 | static unsigned short force_id; |
46 | module_param(force_id, ushort, 0); | |
47 | MODULE_PARM_DESC(force_id, "Override the detected device ID"); | |
48 | ||
51f2cca1 JD |
49 | static struct platform_device *pdev; |
50 | ||
51 | #define DRVNAME "smsc47m1" | |
8eccbb6f | 52 | enum chips { smsc47m1, smsc47m2 }; |
1da177e4 LT |
53 | |
54 | /* Super-I/0 registers and commands */ | |
55 | ||
85a0c0d1 GR |
56 | #define REG 0x2e /* The register to read/write */ |
57 | #define VAL 0x2f /* The value to read/write */ | |
1da177e4 LT |
58 | |
59 | static inline void | |
60 | superio_outb(int reg, int val) | |
61 | { | |
62 | outb(reg, REG); | |
63 | outb(val, VAL); | |
64 | } | |
65 | ||
66 | static inline int | |
67 | superio_inb(int reg) | |
68 | { | |
69 | outb(reg, REG); | |
70 | return inb(VAL); | |
71 | } | |
72 | ||
73 | /* logical device for fans is 0x0A */ | |
74 | #define superio_select() superio_outb(0x07, 0x0A) | |
75 | ||
76 | static inline void | |
77 | superio_enter(void) | |
78 | { | |
79 | outb(0x55, REG); | |
80 | } | |
81 | ||
82 | static inline void | |
83 | superio_exit(void) | |
84 | { | |
85 | outb(0xAA, REG); | |
86 | } | |
87 | ||
88 | #define SUPERIO_REG_ACT 0x30 | |
89 | #define SUPERIO_REG_BASE 0x60 | |
90 | #define SUPERIO_REG_DEVID 0x20 | |
1b54ab45 | 91 | #define SUPERIO_REG_DEVREV 0x21 |
1da177e4 LT |
92 | |
93 | /* Logical device registers */ | |
94 | ||
95 | #define SMSC_EXTENT 0x80 | |
96 | ||
97 | /* nr is 0 or 1 in the macros below */ | |
98 | #define SMSC47M1_REG_ALARM 0x04 | |
99 | #define SMSC47M1_REG_TPIN(nr) (0x34 - (nr)) | |
100 | #define SMSC47M1_REG_PPIN(nr) (0x36 - (nr)) | |
1da177e4 | 101 | #define SMSC47M1_REG_FANDIV 0x58 |
8eccbb6f JD |
102 | |
103 | static const u8 SMSC47M1_REG_FAN[3] = { 0x59, 0x5a, 0x6b }; | |
104 | static const u8 SMSC47M1_REG_FAN_PRELOAD[3] = { 0x5b, 0x5c, 0x6c }; | |
105 | static const u8 SMSC47M1_REG_PWM[3] = { 0x56, 0x57, 0x69 }; | |
106 | ||
107 | #define SMSC47M2_REG_ALARM6 0x09 | |
108 | #define SMSC47M2_REG_TPIN1 0x38 | |
109 | #define SMSC47M2_REG_TPIN2 0x37 | |
110 | #define SMSC47M2_REG_TPIN3 0x2d | |
111 | #define SMSC47M2_REG_PPIN3 0x2c | |
112 | #define SMSC47M2_REG_FANDIV3 0x6a | |
1da177e4 | 113 | |
85a0c0d1 GR |
114 | #define MIN_FROM_REG(reg, div) ((reg) >= 192 ? 0 : \ |
115 | 983040 / ((192 - (reg)) * (div))) | |
116 | #define FAN_FROM_REG(reg, div, preload) ((reg) <= (preload) || (reg) == 255 ? \ | |
117 | 0 : \ | |
118 | 983040 / (((reg) - (preload)) * (div))) | |
1da177e4 LT |
119 | #define DIV_FROM_REG(reg) (1 << (reg)) |
120 | #define PWM_FROM_REG(reg) (((reg) & 0x7E) << 1) | |
121 | #define PWM_EN_FROM_REG(reg) ((~(reg)) & 0x01) | |
122 | #define PWM_TO_REG(reg) (((reg) >> 1) & 0x7E) | |
123 | ||
124 | struct smsc47m1_data { | |
51f2cca1 JD |
125 | unsigned short addr; |
126 | const char *name; | |
8eccbb6f | 127 | enum chips type; |
1beeffe4 | 128 | struct device *hwmon_dev; |
1da177e4 | 129 | |
9a61bf63 | 130 | struct mutex update_lock; |
1da177e4 LT |
131 | unsigned long last_updated; /* In jiffies */ |
132 | ||
8eccbb6f JD |
133 | u8 fan[3]; /* Register value */ |
134 | u8 fan_preload[3]; /* Register value */ | |
135 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
1da177e4 | 136 | u8 alarms; /* Register encoding */ |
8eccbb6f | 137 | u8 pwm[3]; /* Register value (bit 0 is disable) */ |
1da177e4 LT |
138 | }; |
139 | ||
51f2cca1 JD |
140 | struct smsc47m1_sio_data { |
141 | enum chips type; | |
fa0bff02 | 142 | u8 activate; /* Remember initial device state */ |
51f2cca1 | 143 | }; |
1da177e4 | 144 | |
51f2cca1 | 145 | static inline int smsc47m1_read_value(struct smsc47m1_data *data, u8 reg) |
94e183fd | 146 | { |
51f2cca1 | 147 | return inb_p(data->addr + reg); |
94e183fd JD |
148 | } |
149 | ||
51f2cca1 | 150 | static inline void smsc47m1_write_value(struct smsc47m1_data *data, u8 reg, |
94e183fd JD |
151 | u8 value) |
152 | { | |
51f2cca1 | 153 | outb_p(value, data->addr + reg); |
94e183fd | 154 | } |
1da177e4 | 155 | |
e70198ac AL |
156 | static struct smsc47m1_data *smsc47m1_update_device(struct device *dev, |
157 | int init) | |
158 | { | |
159 | struct smsc47m1_data *data = dev_get_drvdata(dev); | |
160 | ||
161 | mutex_lock(&data->update_lock); | |
162 | ||
163 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || init) { | |
164 | int i, fan_nr; | |
165 | fan_nr = data->type == smsc47m2 ? 3 : 2; | |
166 | ||
167 | for (i = 0; i < fan_nr; i++) { | |
168 | data->fan[i] = smsc47m1_read_value(data, | |
169 | SMSC47M1_REG_FAN[i]); | |
170 | data->fan_preload[i] = smsc47m1_read_value(data, | |
171 | SMSC47M1_REG_FAN_PRELOAD[i]); | |
172 | data->pwm[i] = smsc47m1_read_value(data, | |
173 | SMSC47M1_REG_PWM[i]); | |
174 | } | |
175 | ||
176 | i = smsc47m1_read_value(data, SMSC47M1_REG_FANDIV); | |
177 | data->fan_div[0] = (i >> 4) & 0x03; | |
178 | data->fan_div[1] = i >> 6; | |
179 | ||
180 | data->alarms = smsc47m1_read_value(data, | |
181 | SMSC47M1_REG_ALARM) >> 6; | |
182 | /* Clear alarms if needed */ | |
183 | if (data->alarms) | |
184 | smsc47m1_write_value(data, SMSC47M1_REG_ALARM, 0xC0); | |
185 | ||
186 | if (fan_nr >= 3) { | |
187 | data->fan_div[2] = (smsc47m1_read_value(data, | |
188 | SMSC47M2_REG_FANDIV3) >> 4) & 0x03; | |
189 | data->alarms |= (smsc47m1_read_value(data, | |
190 | SMSC47M2_REG_ALARM6) & 0x40) >> 4; | |
191 | /* Clear alarm if needed */ | |
192 | if (data->alarms & 0x04) | |
193 | smsc47m1_write_value(data, | |
194 | SMSC47M2_REG_ALARM6, | |
195 | 0x40); | |
196 | } | |
197 | ||
198 | data->last_updated = jiffies; | |
199 | } | |
200 | ||
201 | mutex_unlock(&data->update_lock); | |
202 | return data; | |
203 | } | |
1da177e4 | 204 | |
e84cfbcb JD |
205 | static ssize_t get_fan(struct device *dev, struct device_attribute |
206 | *devattr, char *buf) | |
1da177e4 | 207 | { |
e84cfbcb | 208 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 209 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); |
e84cfbcb | 210 | int nr = attr->index; |
85a0c0d1 GR |
211 | /* |
212 | * This chip (stupidly) stops monitoring fan speed if PWM is | |
213 | * enabled and duty cycle is 0%. This is fine if the monitoring | |
214 | * and control concern the same fan, but troublesome if they are | |
215 | * not (which could as well happen). | |
216 | */ | |
1da177e4 LT |
217 | int rpm = (data->pwm[nr] & 0x7F) == 0x00 ? 0 : |
218 | FAN_FROM_REG(data->fan[nr], | |
219 | DIV_FROM_REG(data->fan_div[nr]), | |
220 | data->fan_preload[nr]); | |
221 | return sprintf(buf, "%d\n", rpm); | |
222 | } | |
223 | ||
e84cfbcb JD |
224 | static ssize_t get_fan_min(struct device *dev, struct device_attribute |
225 | *devattr, char *buf) | |
1da177e4 | 226 | { |
e84cfbcb | 227 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 228 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); |
e84cfbcb | 229 | int nr = attr->index; |
1da177e4 LT |
230 | int rpm = MIN_FROM_REG(data->fan_preload[nr], |
231 | DIV_FROM_REG(data->fan_div[nr])); | |
232 | return sprintf(buf, "%d\n", rpm); | |
233 | } | |
234 | ||
e84cfbcb JD |
235 | static ssize_t get_fan_div(struct device *dev, struct device_attribute |
236 | *devattr, char *buf) | |
1da177e4 | 237 | { |
e84cfbcb | 238 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 239 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); |
e84cfbcb | 240 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[attr->index])); |
1da177e4 LT |
241 | } |
242 | ||
1f08af7e JD |
243 | static ssize_t get_fan_alarm(struct device *dev, struct device_attribute |
244 | *devattr, char *buf) | |
245 | { | |
246 | int bitnr = to_sensor_dev_attr(devattr)->index; | |
247 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); | |
248 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
249 | } | |
250 | ||
e84cfbcb JD |
251 | static ssize_t get_pwm(struct device *dev, struct device_attribute |
252 | *devattr, char *buf) | |
1da177e4 | 253 | { |
e84cfbcb | 254 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 255 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); |
e84cfbcb | 256 | return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[attr->index])); |
1da177e4 LT |
257 | } |
258 | ||
e84cfbcb JD |
259 | static ssize_t get_pwm_en(struct device *dev, struct device_attribute |
260 | *devattr, char *buf) | |
1da177e4 | 261 | { |
e84cfbcb | 262 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 263 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); |
e84cfbcb | 264 | return sprintf(buf, "%d\n", PWM_EN_FROM_REG(data->pwm[attr->index])); |
1da177e4 LT |
265 | } |
266 | ||
e84cfbcb JD |
267 | static ssize_t get_alarms(struct device *dev, struct device_attribute |
268 | *devattr, char *buf) | |
1da177e4 LT |
269 | { |
270 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); | |
271 | return sprintf(buf, "%d\n", data->alarms); | |
272 | } | |
273 | ||
e84cfbcb JD |
274 | static ssize_t set_fan_min(struct device *dev, struct device_attribute |
275 | *devattr, const char *buf, size_t count) | |
1da177e4 | 276 | { |
e84cfbcb | 277 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
51f2cca1 | 278 | struct smsc47m1_data *data = dev_get_drvdata(dev); |
e84cfbcb | 279 | int nr = attr->index; |
85a0c0d1 GR |
280 | long rpmdiv; |
281 | long val; | |
282 | int err; | |
283 | ||
284 | err = kstrtol(buf, 10, &val); | |
285 | if (err) | |
286 | return err; | |
1da177e4 | 287 | |
9a61bf63 | 288 | mutex_lock(&data->update_lock); |
1da177e4 LT |
289 | rpmdiv = val * DIV_FROM_REG(data->fan_div[nr]); |
290 | ||
291 | if (983040 > 192 * rpmdiv || 2 * rpmdiv > 983040) { | |
9a61bf63 | 292 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
293 | return -EINVAL; |
294 | } | |
295 | ||
296 | data->fan_preload[nr] = 192 - ((983040 + rpmdiv / 2) / rpmdiv); | |
51f2cca1 | 297 | smsc47m1_write_value(data, SMSC47M1_REG_FAN_PRELOAD[nr], |
1da177e4 | 298 | data->fan_preload[nr]); |
9a61bf63 | 299 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
300 | |
301 | return count; | |
302 | } | |
303 | ||
85a0c0d1 GR |
304 | /* |
305 | * Note: we save and restore the fan minimum here, because its value is | |
306 | * determined in part by the fan clock divider. This follows the principle | |
307 | * of least surprise; the user doesn't expect the fan minimum to change just | |
308 | * because the divider changed. | |
309 | */ | |
e84cfbcb JD |
310 | static ssize_t set_fan_div(struct device *dev, struct device_attribute |
311 | *devattr, const char *buf, size_t count) | |
1da177e4 | 312 | { |
e84cfbcb | 313 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
51f2cca1 | 314 | struct smsc47m1_data *data = dev_get_drvdata(dev); |
e84cfbcb | 315 | int nr = attr->index; |
85a0c0d1 GR |
316 | long new_div; |
317 | int err; | |
318 | long tmp; | |
1da177e4 LT |
319 | u8 old_div = DIV_FROM_REG(data->fan_div[nr]); |
320 | ||
85a0c0d1 GR |
321 | err = kstrtol(buf, 10, &new_div); |
322 | if (err) | |
323 | return err; | |
324 | ||
1da177e4 LT |
325 | if (new_div == old_div) /* No change */ |
326 | return count; | |
327 | ||
9a61bf63 | 328 | mutex_lock(&data->update_lock); |
1da177e4 | 329 | switch (new_div) { |
85a0c0d1 GR |
330 | case 1: |
331 | data->fan_div[nr] = 0; | |
332 | break; | |
333 | case 2: | |
334 | data->fan_div[nr] = 1; | |
335 | break; | |
336 | case 4: | |
337 | data->fan_div[nr] = 2; | |
338 | break; | |
339 | case 8: | |
340 | data->fan_div[nr] = 3; | |
341 | break; | |
1da177e4 | 342 | default: |
9a61bf63 | 343 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
344 | return -EINVAL; |
345 | } | |
346 | ||
8eccbb6f JD |
347 | switch (nr) { |
348 | case 0: | |
349 | case 1: | |
51f2cca1 | 350 | tmp = smsc47m1_read_value(data, SMSC47M1_REG_FANDIV) |
8eccbb6f JD |
351 | & ~(0x03 << (4 + 2 * nr)); |
352 | tmp |= data->fan_div[nr] << (4 + 2 * nr); | |
51f2cca1 | 353 | smsc47m1_write_value(data, SMSC47M1_REG_FANDIV, tmp); |
8eccbb6f JD |
354 | break; |
355 | case 2: | |
51f2cca1 | 356 | tmp = smsc47m1_read_value(data, SMSC47M2_REG_FANDIV3) & 0xCF; |
8eccbb6f | 357 | tmp |= data->fan_div[2] << 4; |
51f2cca1 | 358 | smsc47m1_write_value(data, SMSC47M2_REG_FANDIV3, tmp); |
8eccbb6f JD |
359 | break; |
360 | } | |
1da177e4 LT |
361 | |
362 | /* Preserve fan min */ | |
363 | tmp = 192 - (old_div * (192 - data->fan_preload[nr]) | |
364 | + new_div / 2) / new_div; | |
2a844c14 | 365 | data->fan_preload[nr] = clamp_val(tmp, 0, 191); |
51f2cca1 | 366 | smsc47m1_write_value(data, SMSC47M1_REG_FAN_PRELOAD[nr], |
1da177e4 | 367 | data->fan_preload[nr]); |
9a61bf63 | 368 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
369 | |
370 | return count; | |
371 | } | |
372 | ||
e84cfbcb JD |
373 | static ssize_t set_pwm(struct device *dev, struct device_attribute |
374 | *devattr, const char *buf, size_t count) | |
1da177e4 | 375 | { |
e84cfbcb | 376 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
51f2cca1 | 377 | struct smsc47m1_data *data = dev_get_drvdata(dev); |
e84cfbcb | 378 | int nr = attr->index; |
85a0c0d1 GR |
379 | long val; |
380 | int err; | |
381 | ||
382 | err = kstrtol(buf, 10, &val); | |
383 | if (err) | |
384 | return err; | |
1da177e4 LT |
385 | |
386 | if (val < 0 || val > 255) | |
387 | return -EINVAL; | |
388 | ||
9a61bf63 | 389 | mutex_lock(&data->update_lock); |
1da177e4 LT |
390 | data->pwm[nr] &= 0x81; /* Preserve additional bits */ |
391 | data->pwm[nr] |= PWM_TO_REG(val); | |
51f2cca1 | 392 | smsc47m1_write_value(data, SMSC47M1_REG_PWM[nr], |
1da177e4 | 393 | data->pwm[nr]); |
9a61bf63 | 394 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
395 | |
396 | return count; | |
397 | } | |
398 | ||
e84cfbcb JD |
399 | static ssize_t set_pwm_en(struct device *dev, struct device_attribute |
400 | *devattr, const char *buf, size_t count) | |
1da177e4 | 401 | { |
e84cfbcb | 402 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
51f2cca1 | 403 | struct smsc47m1_data *data = dev_get_drvdata(dev); |
e84cfbcb | 404 | int nr = attr->index; |
85a0c0d1 GR |
405 | unsigned long val; |
406 | int err; | |
407 | ||
408 | err = kstrtoul(buf, 10, &val); | |
409 | if (err) | |
410 | return err; | |
411 | ||
412 | if (val > 1) | |
1da177e4 LT |
413 | return -EINVAL; |
414 | ||
9a61bf63 | 415 | mutex_lock(&data->update_lock); |
1da177e4 LT |
416 | data->pwm[nr] &= 0xFE; /* preserve the other bits */ |
417 | data->pwm[nr] |= !val; | |
51f2cca1 | 418 | smsc47m1_write_value(data, SMSC47M1_REG_PWM[nr], |
1da177e4 | 419 | data->pwm[nr]); |
9a61bf63 | 420 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
421 | |
422 | return count; | |
423 | } | |
424 | ||
425 | #define fan_present(offset) \ | |
e84cfbcb JD |
426 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, get_fan, \ |
427 | NULL, offset - 1); \ | |
428 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
429 | get_fan_min, set_fan_min, offset - 1); \ | |
430 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
431 | get_fan_div, set_fan_div, offset - 1); \ | |
1f08af7e JD |
432 | static SENSOR_DEVICE_ATTR(fan##offset##_alarm, S_IRUGO, get_fan_alarm, \ |
433 | NULL, offset - 1); \ | |
e84cfbcb JD |
434 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ |
435 | get_pwm, set_pwm, offset - 1); \ | |
436 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ | |
437 | get_pwm_en, set_pwm_en, offset - 1) | |
1da177e4 LT |
438 | |
439 | fan_present(1); | |
440 | fan_present(2); | |
8eccbb6f | 441 | fan_present(3); |
1da177e4 LT |
442 | |
443 | static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL); | |
444 | ||
51f2cca1 JD |
445 | static ssize_t show_name(struct device *dev, struct device_attribute |
446 | *devattr, char *buf) | |
447 | { | |
448 | struct smsc47m1_data *data = dev_get_drvdata(dev); | |
449 | ||
450 | return sprintf(buf, "%s\n", data->name); | |
451 | } | |
452 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
453 | ||
7e612685 | 454 | static struct attribute *smsc47m1_attributes_fan1[] = { |
e84cfbcb JD |
455 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
456 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
457 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
1f08af7e | 458 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
7e612685 GR |
459 | NULL |
460 | }; | |
461 | ||
462 | static const struct attribute_group smsc47m1_group_fan1 = { | |
463 | .attrs = smsc47m1_attributes_fan1, | |
464 | }; | |
465 | ||
466 | static struct attribute *smsc47m1_attributes_fan2[] = { | |
e84cfbcb JD |
467 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
468 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
469 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
1f08af7e | 470 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
7e612685 GR |
471 | NULL |
472 | }; | |
473 | ||
474 | static const struct attribute_group smsc47m1_group_fan2 = { | |
475 | .attrs = smsc47m1_attributes_fan2, | |
476 | }; | |
477 | ||
478 | static struct attribute *smsc47m1_attributes_fan3[] = { | |
e84cfbcb JD |
479 | &sensor_dev_attr_fan3_input.dev_attr.attr, |
480 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
481 | &sensor_dev_attr_fan3_div.dev_attr.attr, | |
1f08af7e | 482 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, |
7e612685 GR |
483 | NULL |
484 | }; | |
e84cfbcb | 485 | |
7e612685 GR |
486 | static const struct attribute_group smsc47m1_group_fan3 = { |
487 | .attrs = smsc47m1_attributes_fan3, | |
488 | }; | |
489 | ||
490 | static struct attribute *smsc47m1_attributes_pwm1[] = { | |
e84cfbcb JD |
491 | &sensor_dev_attr_pwm1.dev_attr.attr, |
492 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
7e612685 GR |
493 | NULL |
494 | }; | |
495 | ||
496 | static const struct attribute_group smsc47m1_group_pwm1 = { | |
497 | .attrs = smsc47m1_attributes_pwm1, | |
498 | }; | |
499 | ||
500 | static struct attribute *smsc47m1_attributes_pwm2[] = { | |
e84cfbcb JD |
501 | &sensor_dev_attr_pwm2.dev_attr.attr, |
502 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
7e612685 GR |
503 | NULL |
504 | }; | |
505 | ||
506 | static const struct attribute_group smsc47m1_group_pwm2 = { | |
507 | .attrs = smsc47m1_attributes_pwm2, | |
508 | }; | |
509 | ||
510 | static struct attribute *smsc47m1_attributes_pwm3[] = { | |
e84cfbcb JD |
511 | &sensor_dev_attr_pwm3.dev_attr.attr, |
512 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
7e612685 GR |
513 | NULL |
514 | }; | |
ce8c6ce1 | 515 | |
7e612685 GR |
516 | static const struct attribute_group smsc47m1_group_pwm3 = { |
517 | .attrs = smsc47m1_attributes_pwm3, | |
518 | }; | |
519 | ||
520 | static struct attribute *smsc47m1_attributes[] = { | |
ce8c6ce1 | 521 | &dev_attr_alarms.attr, |
51f2cca1 | 522 | &dev_attr_name.attr, |
ce8c6ce1 JD |
523 | NULL |
524 | }; | |
525 | ||
526 | static const struct attribute_group smsc47m1_group = { | |
527 | .attrs = smsc47m1_attributes, | |
528 | }; | |
529 | ||
1d0045ee | 530 | static int __init smsc47m1_find(struct smsc47m1_sio_data *sio_data) |
1da177e4 LT |
531 | { |
532 | u8 val; | |
1d0045ee | 533 | unsigned short addr; |
1da177e4 LT |
534 | |
535 | superio_enter(); | |
67b671bc | 536 | val = force_id ? force_id : superio_inb(SUPERIO_REG_DEVID); |
1da177e4 LT |
537 | |
538 | /* | |
6091780e JD |
539 | * SMSC LPC47M10x/LPC47M112/LPC47M13x (device id 0x59), LPC47M14x |
540 | * (device id 0x5F) and LPC47B27x (device id 0x51) have fan control. | |
1da177e4 | 541 | * The LPC47M15x and LPC47M192 chips "with hardware monitoring block" |
ec5ce552 | 542 | * can do much more besides (device id 0x60). |
b890a07f JD |
543 | * The LPC47M997 is undocumented, but seems to be compatible with |
544 | * the LPC47M192, and has the same device id. | |
8eccbb6f JD |
545 | * The LPC47M292 (device id 0x6B) is somewhat compatible, but it |
546 | * supports a 3rd fan, and the pin configuration registers are | |
547 | * unfortunately different. | |
1b54ab45 JD |
548 | * The LPC47M233 has the same device id (0x6B) but is not compatible. |
549 | * We check the high bit of the device revision register to | |
550 | * differentiate them. | |
1da177e4 | 551 | */ |
51f2cca1 | 552 | switch (val) { |
8eccbb6f | 553 | case 0x51: |
512504e9 | 554 | pr_info("Found SMSC LPC47B27x\n"); |
51f2cca1 | 555 | sio_data->type = smsc47m1; |
8eccbb6f JD |
556 | break; |
557 | case 0x59: | |
512504e9 | 558 | pr_info("Found SMSC LPC47M10x/LPC47M112/LPC47M13x\n"); |
51f2cca1 | 559 | sio_data->type = smsc47m1; |
8eccbb6f JD |
560 | break; |
561 | case 0x5F: | |
512504e9 | 562 | pr_info("Found SMSC LPC47M14x\n"); |
51f2cca1 | 563 | sio_data->type = smsc47m1; |
8eccbb6f JD |
564 | break; |
565 | case 0x60: | |
512504e9 | 566 | pr_info("Found SMSC LPC47M15x/LPC47M192/LPC47M997\n"); |
51f2cca1 | 567 | sio_data->type = smsc47m1; |
8eccbb6f JD |
568 | break; |
569 | case 0x6B: | |
1b54ab45 | 570 | if (superio_inb(SUPERIO_REG_DEVREV) & 0x80) { |
512504e9 | 571 | pr_debug("Found SMSC LPC47M233, unsupported\n"); |
1b54ab45 JD |
572 | superio_exit(); |
573 | return -ENODEV; | |
574 | } | |
575 | ||
512504e9 | 576 | pr_info("Found SMSC LPC47M292\n"); |
51f2cca1 | 577 | sio_data->type = smsc47m2; |
8eccbb6f JD |
578 | break; |
579 | default: | |
1da177e4 LT |
580 | superio_exit(); |
581 | return -ENODEV; | |
582 | } | |
583 | ||
584 | superio_select(); | |
1d0045ee | 585 | addr = (superio_inb(SUPERIO_REG_BASE) << 8) |
2d8672c5 | 586 | | superio_inb(SUPERIO_REG_BASE + 1); |
1d0045ee | 587 | if (addr == 0) { |
512504e9 | 588 | pr_info("Device address not set, will not use\n"); |
1da177e4 LT |
589 | superio_exit(); |
590 | return -ENODEV; | |
591 | } | |
592 | ||
85a0c0d1 GR |
593 | /* |
594 | * Enable only if address is set (needed at least on the | |
595 | * Compaq Presario S4000NX) | |
596 | */ | |
fa0bff02 JD |
597 | sio_data->activate = superio_inb(SUPERIO_REG_ACT); |
598 | if ((sio_data->activate & 0x01) == 0) { | |
512504e9 | 599 | pr_info("Enabling device\n"); |
fa0bff02 JD |
600 | superio_outb(SUPERIO_REG_ACT, sio_data->activate | 0x01); |
601 | } | |
602 | ||
1da177e4 | 603 | superio_exit(); |
1d0045ee | 604 | return addr; |
1da177e4 LT |
605 | } |
606 | ||
fa0bff02 | 607 | /* Restore device to its initial state */ |
a00d643a | 608 | static void smsc47m1_restore(const struct smsc47m1_sio_data *sio_data) |
fa0bff02 JD |
609 | { |
610 | if ((sio_data->activate & 0x01) == 0) { | |
611 | superio_enter(); | |
612 | superio_select(); | |
613 | ||
512504e9 | 614 | pr_info("Disabling device\n"); |
fa0bff02 JD |
615 | superio_outb(SUPERIO_REG_ACT, sio_data->activate); |
616 | ||
617 | superio_exit(); | |
618 | } | |
619 | } | |
620 | ||
a0e92d70 JD |
621 | #define CHECK 1 |
622 | #define REQUEST 2 | |
a0e92d70 JD |
623 | |
624 | /* | |
625 | * This function can be used to: | |
626 | * - test for resource conflicts with ACPI | |
627 | * - request the resources | |
a0e92d70 JD |
628 | * We only allocate the I/O ports we really need, to minimize the risk of |
629 | * conflicts with ACPI or with other drivers. | |
630 | */ | |
08ad7c95 GR |
631 | static int __init smsc47m1_handle_resources(unsigned short address, |
632 | enum chips type, int action, | |
633 | struct device *dev) | |
a0e92d70 JD |
634 | { |
635 | static const u8 ports_m1[] = { | |
636 | /* register, region length */ | |
637 | 0x04, 1, | |
638 | 0x33, 4, | |
639 | 0x56, 7, | |
640 | }; | |
641 | ||
642 | static const u8 ports_m2[] = { | |
643 | /* register, region length */ | |
644 | 0x04, 1, | |
645 | 0x09, 1, | |
646 | 0x2c, 2, | |
647 | 0x35, 4, | |
648 | 0x56, 7, | |
649 | 0x69, 4, | |
650 | }; | |
651 | ||
652 | int i, ports_size, err; | |
653 | const u8 *ports; | |
654 | ||
655 | switch (type) { | |
656 | case smsc47m1: | |
657 | default: | |
658 | ports = ports_m1; | |
659 | ports_size = ARRAY_SIZE(ports_m1); | |
660 | break; | |
661 | case smsc47m2: | |
662 | ports = ports_m2; | |
663 | ports_size = ARRAY_SIZE(ports_m2); | |
664 | break; | |
665 | } | |
666 | ||
667 | for (i = 0; i + 1 < ports_size; i += 2) { | |
668 | unsigned short start = address + ports[i]; | |
669 | unsigned short len = ports[i + 1]; | |
670 | ||
671 | switch (action) { | |
672 | case CHECK: | |
673 | /* Only check for conflicts */ | |
674 | err = acpi_check_region(start, len, DRVNAME); | |
675 | if (err) | |
676 | return err; | |
677 | break; | |
678 | case REQUEST: | |
679 | /* Request the resources */ | |
08ad7c95 GR |
680 | if (!devm_request_region(dev, start, len, DRVNAME)) { |
681 | dev_err(dev, | |
682 | "Region 0x%hx-0x%hx already in use!\n", | |
683 | start, start + len); | |
a0e92d70 JD |
684 | return -EBUSY; |
685 | } | |
686 | break; | |
a0e92d70 JD |
687 | } |
688 | } | |
689 | ||
690 | return 0; | |
691 | } | |
692 | ||
7e612685 GR |
693 | static void smsc47m1_remove_files(struct device *dev) |
694 | { | |
695 | sysfs_remove_group(&dev->kobj, &smsc47m1_group); | |
696 | sysfs_remove_group(&dev->kobj, &smsc47m1_group_fan1); | |
697 | sysfs_remove_group(&dev->kobj, &smsc47m1_group_fan2); | |
698 | sysfs_remove_group(&dev->kobj, &smsc47m1_group_fan3); | |
699 | sysfs_remove_group(&dev->kobj, &smsc47m1_group_pwm1); | |
700 | sysfs_remove_group(&dev->kobj, &smsc47m1_group_pwm2); | |
701 | sysfs_remove_group(&dev->kobj, &smsc47m1_group_pwm3); | |
702 | } | |
703 | ||
3ecf44b3 | 704 | static int __init smsc47m1_probe(struct platform_device *pdev) |
1da177e4 | 705 | { |
51f2cca1 | 706 | struct device *dev = &pdev->dev; |
a8b3a3a5 | 707 | struct smsc47m1_sio_data *sio_data = dev_get_platdata(dev); |
1da177e4 | 708 | struct smsc47m1_data *data; |
51f2cca1 | 709 | struct resource *res; |
a0e92d70 | 710 | int err; |
8eccbb6f | 711 | int fan1, fan2, fan3, pwm1, pwm2, pwm3; |
1da177e4 | 712 | |
85a0c0d1 | 713 | static const char * const names[] = { |
51f2cca1 JD |
714 | "smsc47m1", |
715 | "smsc47m2", | |
716 | }; | |
717 | ||
718 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); | |
a0e92d70 JD |
719 | err = smsc47m1_handle_resources(res->start, sio_data->type, |
720 | REQUEST, dev); | |
721 | if (err < 0) | |
722 | return err; | |
1da177e4 | 723 | |
08ad7c95 GR |
724 | data = devm_kzalloc(dev, sizeof(struct smsc47m1_data), GFP_KERNEL); |
725 | if (!data) | |
726 | return -ENOMEM; | |
1da177e4 | 727 | |
51f2cca1 JD |
728 | data->addr = res->start; |
729 | data->type = sio_data->type; | |
730 | data->name = names[sio_data->type]; | |
9a61bf63 | 731 | mutex_init(&data->update_lock); |
51f2cca1 | 732 | platform_set_drvdata(pdev, data); |
1da177e4 | 733 | |
85a0c0d1 GR |
734 | /* |
735 | * If no function is properly configured, there's no point in | |
736 | * actually registering the chip. | |
737 | */ | |
51f2cca1 | 738 | pwm1 = (smsc47m1_read_value(data, SMSC47M1_REG_PPIN(0)) & 0x05) |
1da177e4 | 739 | == 0x04; |
51f2cca1 | 740 | pwm2 = (smsc47m1_read_value(data, SMSC47M1_REG_PPIN(1)) & 0x05) |
1da177e4 | 741 | == 0x04; |
8eccbb6f | 742 | if (data->type == smsc47m2) { |
51f2cca1 | 743 | fan1 = (smsc47m1_read_value(data, SMSC47M2_REG_TPIN1) |
8eccbb6f | 744 | & 0x0d) == 0x09; |
51f2cca1 | 745 | fan2 = (smsc47m1_read_value(data, SMSC47M2_REG_TPIN2) |
8eccbb6f | 746 | & 0x0d) == 0x09; |
51f2cca1 | 747 | fan3 = (smsc47m1_read_value(data, SMSC47M2_REG_TPIN3) |
8eccbb6f | 748 | & 0x0d) == 0x0d; |
51f2cca1 | 749 | pwm3 = (smsc47m1_read_value(data, SMSC47M2_REG_PPIN3) |
8eccbb6f JD |
750 | & 0x0d) == 0x08; |
751 | } else { | |
51f2cca1 | 752 | fan1 = (smsc47m1_read_value(data, SMSC47M1_REG_TPIN(0)) |
8eccbb6f | 753 | & 0x05) == 0x05; |
51f2cca1 | 754 | fan2 = (smsc47m1_read_value(data, SMSC47M1_REG_TPIN(1)) |
8eccbb6f JD |
755 | & 0x05) == 0x05; |
756 | fan3 = 0; | |
757 | pwm3 = 0; | |
758 | } | |
759 | if (!(fan1 || fan2 || fan3 || pwm1 || pwm2 || pwm3)) { | |
51f2cca1 | 760 | dev_warn(dev, "Device not configured, will not use\n"); |
08ad7c95 | 761 | return -ENODEV; |
1da177e4 LT |
762 | } |
763 | ||
85a0c0d1 GR |
764 | /* |
765 | * Some values (fan min, clock dividers, pwm registers) may be | |
766 | * needed before any update is triggered, so we better read them | |
767 | * at least once here. We don't usually do it that way, but in | |
768 | * this particular case, manually reading 5 registers out of 8 | |
769 | * doesn't make much sense and we're better using the existing | |
770 | * function. | |
771 | */ | |
51f2cca1 | 772 | smsc47m1_update_device(dev, 1); |
1da177e4 | 773 | |
943b0830 | 774 | /* Register sysfs hooks */ |
1da177e4 | 775 | if (fan1) { |
7e612685 GR |
776 | err = sysfs_create_group(&dev->kobj, |
777 | &smsc47m1_group_fan1); | |
778 | if (err) | |
ce8c6ce1 | 779 | goto error_remove_files; |
1da177e4 | 780 | } else |
51f2cca1 | 781 | dev_dbg(dev, "Fan 1 not enabled by hardware, skipping\n"); |
1da177e4 LT |
782 | |
783 | if (fan2) { | |
7e612685 GR |
784 | err = sysfs_create_group(&dev->kobj, |
785 | &smsc47m1_group_fan2); | |
786 | if (err) | |
ce8c6ce1 | 787 | goto error_remove_files; |
1da177e4 | 788 | } else |
51f2cca1 | 789 | dev_dbg(dev, "Fan 2 not enabled by hardware, skipping\n"); |
1da177e4 | 790 | |
8eccbb6f | 791 | if (fan3) { |
7e612685 GR |
792 | err = sysfs_create_group(&dev->kobj, |
793 | &smsc47m1_group_fan3); | |
794 | if (err) | |
8eccbb6f | 795 | goto error_remove_files; |
8477d026 | 796 | } else if (data->type == smsc47m2) |
51f2cca1 | 797 | dev_dbg(dev, "Fan 3 not enabled by hardware, skipping\n"); |
8eccbb6f | 798 | |
1da177e4 | 799 | if (pwm1) { |
7e612685 GR |
800 | err = sysfs_create_group(&dev->kobj, |
801 | &smsc47m1_group_pwm1); | |
802 | if (err) | |
ce8c6ce1 | 803 | goto error_remove_files; |
1da177e4 | 804 | } else |
51f2cca1 | 805 | dev_dbg(dev, "PWM 1 not enabled by hardware, skipping\n"); |
8eccbb6f | 806 | |
1da177e4 | 807 | if (pwm2) { |
7e612685 GR |
808 | err = sysfs_create_group(&dev->kobj, |
809 | &smsc47m1_group_pwm2); | |
810 | if (err) | |
ce8c6ce1 | 811 | goto error_remove_files; |
1da177e4 | 812 | } else |
51f2cca1 | 813 | dev_dbg(dev, "PWM 2 not enabled by hardware, skipping\n"); |
1da177e4 | 814 | |
8eccbb6f | 815 | if (pwm3) { |
7e612685 GR |
816 | err = sysfs_create_group(&dev->kobj, |
817 | &smsc47m1_group_pwm3); | |
818 | if (err) | |
8eccbb6f | 819 | goto error_remove_files; |
8477d026 | 820 | } else if (data->type == smsc47m2) |
51f2cca1 | 821 | dev_dbg(dev, "PWM 3 not enabled by hardware, skipping\n"); |
8eccbb6f | 822 | |
7e612685 GR |
823 | err = sysfs_create_group(&dev->kobj, &smsc47m1_group); |
824 | if (err) | |
68a50b56 | 825 | goto error_remove_files; |
ce8c6ce1 | 826 | |
1beeffe4 TJ |
827 | data->hwmon_dev = hwmon_device_register(dev); |
828 | if (IS_ERR(data->hwmon_dev)) { | |
829 | err = PTR_ERR(data->hwmon_dev); | |
ce8c6ce1 JD |
830 | goto error_remove_files; |
831 | } | |
1da177e4 LT |
832 | |
833 | return 0; | |
834 | ||
ce8c6ce1 | 835 | error_remove_files: |
7e612685 | 836 | smsc47m1_remove_files(dev); |
1da177e4 LT |
837 | return err; |
838 | } | |
839 | ||
3ecf44b3 | 840 | static int __exit smsc47m1_remove(struct platform_device *pdev) |
1da177e4 | 841 | { |
51f2cca1 | 842 | struct smsc47m1_data *data = platform_get_drvdata(pdev); |
1da177e4 | 843 | |
1beeffe4 | 844 | hwmon_device_unregister(data->hwmon_dev); |
7e612685 | 845 | smsc47m1_remove_files(&pdev->dev); |
1da177e4 | 846 | |
1da177e4 LT |
847 | return 0; |
848 | } | |
849 | ||
e70198ac AL |
850 | static struct platform_driver smsc47m1_driver = { |
851 | .driver = { | |
e70198ac AL |
852 | .name = DRVNAME, |
853 | }, | |
854 | .remove = __exit_p(smsc47m1_remove), | |
855 | }; | |
1da177e4 | 856 | |
51f2cca1 JD |
857 | static int __init smsc47m1_device_add(unsigned short address, |
858 | const struct smsc47m1_sio_data *sio_data) | |
859 | { | |
860 | struct resource res = { | |
861 | .start = address, | |
862 | .end = address + SMSC_EXTENT - 1, | |
863 | .name = DRVNAME, | |
864 | .flags = IORESOURCE_IO, | |
865 | }; | |
866 | int err; | |
867 | ||
a0e92d70 | 868 | err = smsc47m1_handle_resources(address, sio_data->type, CHECK, NULL); |
b9acb64a JD |
869 | if (err) |
870 | goto exit; | |
871 | ||
51f2cca1 JD |
872 | pdev = platform_device_alloc(DRVNAME, address); |
873 | if (!pdev) { | |
874 | err = -ENOMEM; | |
512504e9 | 875 | pr_err("Device allocation failed\n"); |
51f2cca1 JD |
876 | goto exit; |
877 | } | |
878 | ||
879 | err = platform_device_add_resources(pdev, &res, 1); | |
880 | if (err) { | |
512504e9 | 881 | pr_err("Device resource addition failed (%d)\n", err); |
51f2cca1 JD |
882 | goto exit_device_put; |
883 | } | |
884 | ||
2df6d811 JD |
885 | err = platform_device_add_data(pdev, sio_data, |
886 | sizeof(struct smsc47m1_sio_data)); | |
887 | if (err) { | |
512504e9 | 888 | pr_err("Platform data allocation failed\n"); |
51f2cca1 JD |
889 | goto exit_device_put; |
890 | } | |
51f2cca1 JD |
891 | |
892 | err = platform_device_add(pdev); | |
893 | if (err) { | |
512504e9 | 894 | pr_err("Device addition failed (%d)\n", err); |
51f2cca1 JD |
895 | goto exit_device_put; |
896 | } | |
897 | ||
898 | return 0; | |
899 | ||
900 | exit_device_put: | |
901 | platform_device_put(pdev); | |
902 | exit: | |
903 | return err; | |
904 | } | |
905 | ||
1da177e4 LT |
906 | static int __init sm_smsc47m1_init(void) |
907 | { | |
51f2cca1 JD |
908 | int err; |
909 | unsigned short address; | |
910 | struct smsc47m1_sio_data sio_data; | |
911 | ||
1d0045ee GR |
912 | err = smsc47m1_find(&sio_data); |
913 | if (err < 0) | |
914 | return err; | |
915 | address = err; | |
1da177e4 | 916 | |
3ecf44b3 JD |
917 | /* Sets global pdev as a side effect */ |
918 | err = smsc47m1_device_add(address, &sio_data); | |
51f2cca1 | 919 | if (err) |
1d0045ee | 920 | return err; |
51f2cca1 | 921 | |
3ecf44b3 | 922 | err = platform_driver_probe(&smsc47m1_driver, smsc47m1_probe); |
51f2cca1 | 923 | if (err) |
3ecf44b3 | 924 | goto exit_device; |
51f2cca1 JD |
925 | |
926 | return 0; | |
927 | ||
3ecf44b3 JD |
928 | exit_device: |
929 | platform_device_unregister(pdev); | |
fa0bff02 | 930 | smsc47m1_restore(&sio_data); |
51f2cca1 | 931 | return err; |
1da177e4 LT |
932 | } |
933 | ||
934 | static void __exit sm_smsc47m1_exit(void) | |
935 | { | |
51f2cca1 | 936 | platform_driver_unregister(&smsc47m1_driver); |
a8b3a3a5 | 937 | smsc47m1_restore(dev_get_platdata(&pdev->dev)); |
3ecf44b3 | 938 | platform_device_unregister(pdev); |
1da177e4 LT |
939 | } |
940 | ||
941 | MODULE_AUTHOR("Mark D. Studebaker <mdsxyz123@yahoo.com>"); | |
942 | MODULE_DESCRIPTION("SMSC LPC47M1xx fan sensors driver"); | |
943 | MODULE_LICENSE("GPL"); | |
944 | ||
945 | module_init(sm_smsc47m1_init); | |
946 | module_exit(sm_smsc47m1_exit); |