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> | |
10 | * Copyright (C) 2004-2007 Jean Delvare <khali@linux-fr.org> | |
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 | |
3ecf44b3 | 146 | static int __exit smsc47m1_remove(struct platform_device *pdev); |
1da177e4 LT |
147 | static struct smsc47m1_data *smsc47m1_update_device(struct device *dev, |
148 | int init); | |
149 | ||
51f2cca1 | 150 | static inline int smsc47m1_read_value(struct smsc47m1_data *data, u8 reg) |
94e183fd | 151 | { |
51f2cca1 | 152 | return inb_p(data->addr + reg); |
94e183fd JD |
153 | } |
154 | ||
51f2cca1 | 155 | static inline void smsc47m1_write_value(struct smsc47m1_data *data, u8 reg, |
94e183fd JD |
156 | u8 value) |
157 | { | |
51f2cca1 | 158 | outb_p(value, data->addr + reg); |
94e183fd | 159 | } |
1da177e4 | 160 | |
51f2cca1 | 161 | static struct platform_driver smsc47m1_driver = { |
cdaf7934 | 162 | .driver = { |
87218842 | 163 | .owner = THIS_MODULE, |
51f2cca1 | 164 | .name = DRVNAME, |
cdaf7934 | 165 | }, |
3ecf44b3 | 166 | .remove = __exit_p(smsc47m1_remove), |
1da177e4 LT |
167 | }; |
168 | ||
e84cfbcb JD |
169 | static ssize_t get_fan(struct device *dev, struct device_attribute |
170 | *devattr, char *buf) | |
1da177e4 | 171 | { |
e84cfbcb | 172 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 173 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); |
e84cfbcb | 174 | int nr = attr->index; |
85a0c0d1 GR |
175 | /* |
176 | * This chip (stupidly) stops monitoring fan speed if PWM is | |
177 | * enabled and duty cycle is 0%. This is fine if the monitoring | |
178 | * and control concern the same fan, but troublesome if they are | |
179 | * not (which could as well happen). | |
180 | */ | |
1da177e4 LT |
181 | int rpm = (data->pwm[nr] & 0x7F) == 0x00 ? 0 : |
182 | FAN_FROM_REG(data->fan[nr], | |
183 | DIV_FROM_REG(data->fan_div[nr]), | |
184 | data->fan_preload[nr]); | |
185 | return sprintf(buf, "%d\n", rpm); | |
186 | } | |
187 | ||
e84cfbcb JD |
188 | static ssize_t get_fan_min(struct device *dev, struct device_attribute |
189 | *devattr, char *buf) | |
1da177e4 | 190 | { |
e84cfbcb | 191 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 192 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); |
e84cfbcb | 193 | int nr = attr->index; |
1da177e4 LT |
194 | int rpm = MIN_FROM_REG(data->fan_preload[nr], |
195 | DIV_FROM_REG(data->fan_div[nr])); | |
196 | return sprintf(buf, "%d\n", rpm); | |
197 | } | |
198 | ||
e84cfbcb JD |
199 | static ssize_t get_fan_div(struct device *dev, struct device_attribute |
200 | *devattr, char *buf) | |
1da177e4 | 201 | { |
e84cfbcb | 202 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 203 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); |
e84cfbcb | 204 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[attr->index])); |
1da177e4 LT |
205 | } |
206 | ||
1f08af7e JD |
207 | static ssize_t get_fan_alarm(struct device *dev, struct device_attribute |
208 | *devattr, char *buf) | |
209 | { | |
210 | int bitnr = to_sensor_dev_attr(devattr)->index; | |
211 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); | |
212 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
213 | } | |
214 | ||
e84cfbcb JD |
215 | static ssize_t get_pwm(struct device *dev, struct device_attribute |
216 | *devattr, char *buf) | |
1da177e4 | 217 | { |
e84cfbcb | 218 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 219 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); |
e84cfbcb | 220 | return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[attr->index])); |
1da177e4 LT |
221 | } |
222 | ||
e84cfbcb JD |
223 | static ssize_t get_pwm_en(struct device *dev, struct device_attribute |
224 | *devattr, char *buf) | |
1da177e4 | 225 | { |
e84cfbcb | 226 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 227 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); |
e84cfbcb | 228 | return sprintf(buf, "%d\n", PWM_EN_FROM_REG(data->pwm[attr->index])); |
1da177e4 LT |
229 | } |
230 | ||
e84cfbcb JD |
231 | static ssize_t get_alarms(struct device *dev, struct device_attribute |
232 | *devattr, char *buf) | |
1da177e4 LT |
233 | { |
234 | struct smsc47m1_data *data = smsc47m1_update_device(dev, 0); | |
235 | return sprintf(buf, "%d\n", data->alarms); | |
236 | } | |
237 | ||
e84cfbcb JD |
238 | static ssize_t set_fan_min(struct device *dev, struct device_attribute |
239 | *devattr, const char *buf, size_t count) | |
1da177e4 | 240 | { |
e84cfbcb | 241 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
51f2cca1 | 242 | struct smsc47m1_data *data = dev_get_drvdata(dev); |
e84cfbcb | 243 | int nr = attr->index; |
85a0c0d1 GR |
244 | long rpmdiv; |
245 | long val; | |
246 | int err; | |
247 | ||
248 | err = kstrtol(buf, 10, &val); | |
249 | if (err) | |
250 | return err; | |
1da177e4 | 251 | |
9a61bf63 | 252 | mutex_lock(&data->update_lock); |
1da177e4 LT |
253 | rpmdiv = val * DIV_FROM_REG(data->fan_div[nr]); |
254 | ||
255 | if (983040 > 192 * rpmdiv || 2 * rpmdiv > 983040) { | |
9a61bf63 | 256 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
257 | return -EINVAL; |
258 | } | |
259 | ||
260 | data->fan_preload[nr] = 192 - ((983040 + rpmdiv / 2) / rpmdiv); | |
51f2cca1 | 261 | smsc47m1_write_value(data, SMSC47M1_REG_FAN_PRELOAD[nr], |
1da177e4 | 262 | data->fan_preload[nr]); |
9a61bf63 | 263 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
264 | |
265 | return count; | |
266 | } | |
267 | ||
85a0c0d1 GR |
268 | /* |
269 | * Note: we save and restore the fan minimum here, because its value is | |
270 | * determined in part by the fan clock divider. This follows the principle | |
271 | * of least surprise; the user doesn't expect the fan minimum to change just | |
272 | * because the divider changed. | |
273 | */ | |
e84cfbcb JD |
274 | static ssize_t set_fan_div(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 new_div; |
281 | int err; | |
282 | long tmp; | |
1da177e4 LT |
283 | u8 old_div = DIV_FROM_REG(data->fan_div[nr]); |
284 | ||
85a0c0d1 GR |
285 | err = kstrtol(buf, 10, &new_div); |
286 | if (err) | |
287 | return err; | |
288 | ||
1da177e4 LT |
289 | if (new_div == old_div) /* No change */ |
290 | return count; | |
291 | ||
9a61bf63 | 292 | mutex_lock(&data->update_lock); |
1da177e4 | 293 | switch (new_div) { |
85a0c0d1 GR |
294 | case 1: |
295 | data->fan_div[nr] = 0; | |
296 | break; | |
297 | case 2: | |
298 | data->fan_div[nr] = 1; | |
299 | break; | |
300 | case 4: | |
301 | data->fan_div[nr] = 2; | |
302 | break; | |
303 | case 8: | |
304 | data->fan_div[nr] = 3; | |
305 | break; | |
1da177e4 | 306 | default: |
9a61bf63 | 307 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
308 | return -EINVAL; |
309 | } | |
310 | ||
8eccbb6f JD |
311 | switch (nr) { |
312 | case 0: | |
313 | case 1: | |
51f2cca1 | 314 | tmp = smsc47m1_read_value(data, SMSC47M1_REG_FANDIV) |
8eccbb6f JD |
315 | & ~(0x03 << (4 + 2 * nr)); |
316 | tmp |= data->fan_div[nr] << (4 + 2 * nr); | |
51f2cca1 | 317 | smsc47m1_write_value(data, SMSC47M1_REG_FANDIV, tmp); |
8eccbb6f JD |
318 | break; |
319 | case 2: | |
51f2cca1 | 320 | tmp = smsc47m1_read_value(data, SMSC47M2_REG_FANDIV3) & 0xCF; |
8eccbb6f | 321 | tmp |= data->fan_div[2] << 4; |
51f2cca1 | 322 | smsc47m1_write_value(data, SMSC47M2_REG_FANDIV3, tmp); |
8eccbb6f JD |
323 | break; |
324 | } | |
1da177e4 LT |
325 | |
326 | /* Preserve fan min */ | |
327 | tmp = 192 - (old_div * (192 - data->fan_preload[nr]) | |
328 | + new_div / 2) / new_div; | |
329 | data->fan_preload[nr] = SENSORS_LIMIT(tmp, 0, 191); | |
51f2cca1 | 330 | smsc47m1_write_value(data, SMSC47M1_REG_FAN_PRELOAD[nr], |
1da177e4 | 331 | data->fan_preload[nr]); |
9a61bf63 | 332 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
333 | |
334 | return count; | |
335 | } | |
336 | ||
e84cfbcb JD |
337 | static ssize_t set_pwm(struct device *dev, struct device_attribute |
338 | *devattr, const char *buf, size_t count) | |
1da177e4 | 339 | { |
e84cfbcb | 340 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
51f2cca1 | 341 | struct smsc47m1_data *data = dev_get_drvdata(dev); |
e84cfbcb | 342 | int nr = attr->index; |
85a0c0d1 GR |
343 | long val; |
344 | int err; | |
345 | ||
346 | err = kstrtol(buf, 10, &val); | |
347 | if (err) | |
348 | return err; | |
1da177e4 LT |
349 | |
350 | if (val < 0 || val > 255) | |
351 | return -EINVAL; | |
352 | ||
9a61bf63 | 353 | mutex_lock(&data->update_lock); |
1da177e4 LT |
354 | data->pwm[nr] &= 0x81; /* Preserve additional bits */ |
355 | data->pwm[nr] |= PWM_TO_REG(val); | |
51f2cca1 | 356 | smsc47m1_write_value(data, SMSC47M1_REG_PWM[nr], |
1da177e4 | 357 | data->pwm[nr]); |
9a61bf63 | 358 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
359 | |
360 | return count; | |
361 | } | |
362 | ||
e84cfbcb JD |
363 | static ssize_t set_pwm_en(struct device *dev, struct device_attribute |
364 | *devattr, const char *buf, size_t count) | |
1da177e4 | 365 | { |
e84cfbcb | 366 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
51f2cca1 | 367 | struct smsc47m1_data *data = dev_get_drvdata(dev); |
e84cfbcb | 368 | int nr = attr->index; |
85a0c0d1 GR |
369 | unsigned long val; |
370 | int err; | |
371 | ||
372 | err = kstrtoul(buf, 10, &val); | |
373 | if (err) | |
374 | return err; | |
375 | ||
376 | if (val > 1) | |
1da177e4 LT |
377 | return -EINVAL; |
378 | ||
9a61bf63 | 379 | mutex_lock(&data->update_lock); |
1da177e4 LT |
380 | data->pwm[nr] &= 0xFE; /* preserve the other bits */ |
381 | data->pwm[nr] |= !val; | |
51f2cca1 | 382 | smsc47m1_write_value(data, SMSC47M1_REG_PWM[nr], |
1da177e4 | 383 | data->pwm[nr]); |
9a61bf63 | 384 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
385 | |
386 | return count; | |
387 | } | |
388 | ||
389 | #define fan_present(offset) \ | |
e84cfbcb JD |
390 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, get_fan, \ |
391 | NULL, offset - 1); \ | |
392 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
393 | get_fan_min, set_fan_min, offset - 1); \ | |
394 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
395 | get_fan_div, set_fan_div, offset - 1); \ | |
1f08af7e JD |
396 | static SENSOR_DEVICE_ATTR(fan##offset##_alarm, S_IRUGO, get_fan_alarm, \ |
397 | NULL, offset - 1); \ | |
e84cfbcb JD |
398 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ |
399 | get_pwm, set_pwm, offset - 1); \ | |
400 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ | |
401 | get_pwm_en, set_pwm_en, offset - 1) | |
1da177e4 LT |
402 | |
403 | fan_present(1); | |
404 | fan_present(2); | |
8eccbb6f | 405 | fan_present(3); |
1da177e4 LT |
406 | |
407 | static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL); | |
408 | ||
51f2cca1 JD |
409 | static ssize_t show_name(struct device *dev, struct device_attribute |
410 | *devattr, char *buf) | |
411 | { | |
412 | struct smsc47m1_data *data = dev_get_drvdata(dev); | |
413 | ||
414 | return sprintf(buf, "%s\n", data->name); | |
415 | } | |
416 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
417 | ||
7e612685 | 418 | static struct attribute *smsc47m1_attributes_fan1[] = { |
e84cfbcb JD |
419 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
420 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
421 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
1f08af7e | 422 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
7e612685 GR |
423 | NULL |
424 | }; | |
425 | ||
426 | static const struct attribute_group smsc47m1_group_fan1 = { | |
427 | .attrs = smsc47m1_attributes_fan1, | |
428 | }; | |
429 | ||
430 | static struct attribute *smsc47m1_attributes_fan2[] = { | |
e84cfbcb JD |
431 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
432 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
433 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
1f08af7e | 434 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
7e612685 GR |
435 | NULL |
436 | }; | |
437 | ||
438 | static const struct attribute_group smsc47m1_group_fan2 = { | |
439 | .attrs = smsc47m1_attributes_fan2, | |
440 | }; | |
441 | ||
442 | static struct attribute *smsc47m1_attributes_fan3[] = { | |
e84cfbcb JD |
443 | &sensor_dev_attr_fan3_input.dev_attr.attr, |
444 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
445 | &sensor_dev_attr_fan3_div.dev_attr.attr, | |
1f08af7e | 446 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, |
7e612685 GR |
447 | NULL |
448 | }; | |
e84cfbcb | 449 | |
7e612685 GR |
450 | static const struct attribute_group smsc47m1_group_fan3 = { |
451 | .attrs = smsc47m1_attributes_fan3, | |
452 | }; | |
453 | ||
454 | static struct attribute *smsc47m1_attributes_pwm1[] = { | |
e84cfbcb JD |
455 | &sensor_dev_attr_pwm1.dev_attr.attr, |
456 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
7e612685 GR |
457 | NULL |
458 | }; | |
459 | ||
460 | static const struct attribute_group smsc47m1_group_pwm1 = { | |
461 | .attrs = smsc47m1_attributes_pwm1, | |
462 | }; | |
463 | ||
464 | static struct attribute *smsc47m1_attributes_pwm2[] = { | |
e84cfbcb JD |
465 | &sensor_dev_attr_pwm2.dev_attr.attr, |
466 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
7e612685 GR |
467 | NULL |
468 | }; | |
469 | ||
470 | static const struct attribute_group smsc47m1_group_pwm2 = { | |
471 | .attrs = smsc47m1_attributes_pwm2, | |
472 | }; | |
473 | ||
474 | static struct attribute *smsc47m1_attributes_pwm3[] = { | |
e84cfbcb JD |
475 | &sensor_dev_attr_pwm3.dev_attr.attr, |
476 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
7e612685 GR |
477 | NULL |
478 | }; | |
ce8c6ce1 | 479 | |
7e612685 GR |
480 | static const struct attribute_group smsc47m1_group_pwm3 = { |
481 | .attrs = smsc47m1_attributes_pwm3, | |
482 | }; | |
483 | ||
484 | static struct attribute *smsc47m1_attributes[] = { | |
ce8c6ce1 | 485 | &dev_attr_alarms.attr, |
51f2cca1 | 486 | &dev_attr_name.attr, |
ce8c6ce1 JD |
487 | NULL |
488 | }; | |
489 | ||
490 | static const struct attribute_group smsc47m1_group = { | |
491 | .attrs = smsc47m1_attributes, | |
492 | }; | |
493 | ||
51f2cca1 JD |
494 | static int __init smsc47m1_find(unsigned short *addr, |
495 | struct smsc47m1_sio_data *sio_data) | |
1da177e4 LT |
496 | { |
497 | u8 val; | |
498 | ||
499 | superio_enter(); | |
67b671bc | 500 | val = force_id ? force_id : superio_inb(SUPERIO_REG_DEVID); |
1da177e4 LT |
501 | |
502 | /* | |
6091780e JD |
503 | * SMSC LPC47M10x/LPC47M112/LPC47M13x (device id 0x59), LPC47M14x |
504 | * (device id 0x5F) and LPC47B27x (device id 0x51) have fan control. | |
1da177e4 | 505 | * The LPC47M15x and LPC47M192 chips "with hardware monitoring block" |
ec5ce552 | 506 | * can do much more besides (device id 0x60). |
b890a07f JD |
507 | * The LPC47M997 is undocumented, but seems to be compatible with |
508 | * the LPC47M192, and has the same device id. | |
8eccbb6f JD |
509 | * The LPC47M292 (device id 0x6B) is somewhat compatible, but it |
510 | * supports a 3rd fan, and the pin configuration registers are | |
511 | * unfortunately different. | |
1b54ab45 JD |
512 | * The LPC47M233 has the same device id (0x6B) but is not compatible. |
513 | * We check the high bit of the device revision register to | |
514 | * differentiate them. | |
1da177e4 | 515 | */ |
51f2cca1 | 516 | switch (val) { |
8eccbb6f | 517 | case 0x51: |
512504e9 | 518 | pr_info("Found SMSC LPC47B27x\n"); |
51f2cca1 | 519 | sio_data->type = smsc47m1; |
8eccbb6f JD |
520 | break; |
521 | case 0x59: | |
512504e9 | 522 | pr_info("Found SMSC LPC47M10x/LPC47M112/LPC47M13x\n"); |
51f2cca1 | 523 | sio_data->type = smsc47m1; |
8eccbb6f JD |
524 | break; |
525 | case 0x5F: | |
512504e9 | 526 | pr_info("Found SMSC LPC47M14x\n"); |
51f2cca1 | 527 | sio_data->type = smsc47m1; |
8eccbb6f JD |
528 | break; |
529 | case 0x60: | |
512504e9 | 530 | pr_info("Found SMSC LPC47M15x/LPC47M192/LPC47M997\n"); |
51f2cca1 | 531 | sio_data->type = smsc47m1; |
8eccbb6f JD |
532 | break; |
533 | case 0x6B: | |
1b54ab45 | 534 | if (superio_inb(SUPERIO_REG_DEVREV) & 0x80) { |
512504e9 | 535 | pr_debug("Found SMSC LPC47M233, unsupported\n"); |
1b54ab45 JD |
536 | superio_exit(); |
537 | return -ENODEV; | |
538 | } | |
539 | ||
512504e9 | 540 | pr_info("Found SMSC LPC47M292\n"); |
51f2cca1 | 541 | sio_data->type = smsc47m2; |
8eccbb6f JD |
542 | break; |
543 | default: | |
1da177e4 LT |
544 | superio_exit(); |
545 | return -ENODEV; | |
546 | } | |
547 | ||
548 | superio_select(); | |
2d8672c5 JD |
549 | *addr = (superio_inb(SUPERIO_REG_BASE) << 8) |
550 | | superio_inb(SUPERIO_REG_BASE + 1); | |
fa0bff02 | 551 | if (*addr == 0) { |
512504e9 | 552 | pr_info("Device address not set, will not use\n"); |
1da177e4 LT |
553 | superio_exit(); |
554 | return -ENODEV; | |
555 | } | |
556 | ||
85a0c0d1 GR |
557 | /* |
558 | * Enable only if address is set (needed at least on the | |
559 | * Compaq Presario S4000NX) | |
560 | */ | |
fa0bff02 JD |
561 | sio_data->activate = superio_inb(SUPERIO_REG_ACT); |
562 | if ((sio_data->activate & 0x01) == 0) { | |
512504e9 | 563 | pr_info("Enabling device\n"); |
fa0bff02 JD |
564 | superio_outb(SUPERIO_REG_ACT, sio_data->activate | 0x01); |
565 | } | |
566 | ||
1da177e4 LT |
567 | superio_exit(); |
568 | return 0; | |
569 | } | |
570 | ||
fa0bff02 | 571 | /* Restore device to its initial state */ |
a00d643a | 572 | static void smsc47m1_restore(const struct smsc47m1_sio_data *sio_data) |
fa0bff02 JD |
573 | { |
574 | if ((sio_data->activate & 0x01) == 0) { | |
575 | superio_enter(); | |
576 | superio_select(); | |
577 | ||
512504e9 | 578 | pr_info("Disabling device\n"); |
fa0bff02 JD |
579 | superio_outb(SUPERIO_REG_ACT, sio_data->activate); |
580 | ||
581 | superio_exit(); | |
582 | } | |
583 | } | |
584 | ||
a0e92d70 JD |
585 | #define CHECK 1 |
586 | #define REQUEST 2 | |
587 | #define RELEASE 3 | |
588 | ||
589 | /* | |
590 | * This function can be used to: | |
591 | * - test for resource conflicts with ACPI | |
592 | * - request the resources | |
593 | * - release the resources | |
594 | * We only allocate the I/O ports we really need, to minimize the risk of | |
595 | * conflicts with ACPI or with other drivers. | |
596 | */ | |
597 | static int smsc47m1_handle_resources(unsigned short address, enum chips type, | |
598 | int action, struct device *dev) | |
599 | { | |
600 | static const u8 ports_m1[] = { | |
601 | /* register, region length */ | |
602 | 0x04, 1, | |
603 | 0x33, 4, | |
604 | 0x56, 7, | |
605 | }; | |
606 | ||
607 | static const u8 ports_m2[] = { | |
608 | /* register, region length */ | |
609 | 0x04, 1, | |
610 | 0x09, 1, | |
611 | 0x2c, 2, | |
612 | 0x35, 4, | |
613 | 0x56, 7, | |
614 | 0x69, 4, | |
615 | }; | |
616 | ||
617 | int i, ports_size, err; | |
618 | const u8 *ports; | |
619 | ||
620 | switch (type) { | |
621 | case smsc47m1: | |
622 | default: | |
623 | ports = ports_m1; | |
624 | ports_size = ARRAY_SIZE(ports_m1); | |
625 | break; | |
626 | case smsc47m2: | |
627 | ports = ports_m2; | |
628 | ports_size = ARRAY_SIZE(ports_m2); | |
629 | break; | |
630 | } | |
631 | ||
632 | for (i = 0; i + 1 < ports_size; i += 2) { | |
633 | unsigned short start = address + ports[i]; | |
634 | unsigned short len = ports[i + 1]; | |
635 | ||
636 | switch (action) { | |
637 | case CHECK: | |
638 | /* Only check for conflicts */ | |
639 | err = acpi_check_region(start, len, DRVNAME); | |
640 | if (err) | |
641 | return err; | |
642 | break; | |
643 | case REQUEST: | |
644 | /* Request the resources */ | |
645 | if (!request_region(start, len, DRVNAME)) { | |
646 | dev_err(dev, "Region 0x%hx-0x%hx already in " | |
647 | "use!\n", start, start + len); | |
648 | ||
649 | /* Undo all requests */ | |
650 | for (i -= 2; i >= 0; i -= 2) | |
651 | release_region(address + ports[i], | |
652 | ports[i + 1]); | |
653 | return -EBUSY; | |
654 | } | |
655 | break; | |
656 | case RELEASE: | |
657 | /* Release the resources */ | |
658 | release_region(start, len); | |
659 | break; | |
660 | } | |
661 | } | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
7e612685 GR |
666 | static void smsc47m1_remove_files(struct device *dev) |
667 | { | |
668 | sysfs_remove_group(&dev->kobj, &smsc47m1_group); | |
669 | sysfs_remove_group(&dev->kobj, &smsc47m1_group_fan1); | |
670 | sysfs_remove_group(&dev->kobj, &smsc47m1_group_fan2); | |
671 | sysfs_remove_group(&dev->kobj, &smsc47m1_group_fan3); | |
672 | sysfs_remove_group(&dev->kobj, &smsc47m1_group_pwm1); | |
673 | sysfs_remove_group(&dev->kobj, &smsc47m1_group_pwm2); | |
674 | sysfs_remove_group(&dev->kobj, &smsc47m1_group_pwm3); | |
675 | } | |
676 | ||
3ecf44b3 | 677 | static int __init smsc47m1_probe(struct platform_device *pdev) |
1da177e4 | 678 | { |
51f2cca1 JD |
679 | struct device *dev = &pdev->dev; |
680 | struct smsc47m1_sio_data *sio_data = dev->platform_data; | |
1da177e4 | 681 | struct smsc47m1_data *data; |
51f2cca1 | 682 | struct resource *res; |
a0e92d70 | 683 | int err; |
8eccbb6f | 684 | int fan1, fan2, fan3, pwm1, pwm2, pwm3; |
1da177e4 | 685 | |
85a0c0d1 | 686 | static const char * const names[] = { |
51f2cca1 JD |
687 | "smsc47m1", |
688 | "smsc47m2", | |
689 | }; | |
690 | ||
691 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); | |
a0e92d70 JD |
692 | err = smsc47m1_handle_resources(res->start, sio_data->type, |
693 | REQUEST, dev); | |
694 | if (err < 0) | |
695 | return err; | |
1da177e4 | 696 | |
85a0c0d1 GR |
697 | data = kzalloc(sizeof(struct smsc47m1_data), GFP_KERNEL); |
698 | if (!data) { | |
1da177e4 LT |
699 | err = -ENOMEM; |
700 | goto error_release; | |
701 | } | |
1da177e4 | 702 | |
51f2cca1 JD |
703 | data->addr = res->start; |
704 | data->type = sio_data->type; | |
705 | data->name = names[sio_data->type]; | |
9a61bf63 | 706 | mutex_init(&data->update_lock); |
51f2cca1 | 707 | platform_set_drvdata(pdev, data); |
1da177e4 | 708 | |
85a0c0d1 GR |
709 | /* |
710 | * If no function is properly configured, there's no point in | |
711 | * actually registering the chip. | |
712 | */ | |
51f2cca1 | 713 | pwm1 = (smsc47m1_read_value(data, SMSC47M1_REG_PPIN(0)) & 0x05) |
1da177e4 | 714 | == 0x04; |
51f2cca1 | 715 | pwm2 = (smsc47m1_read_value(data, SMSC47M1_REG_PPIN(1)) & 0x05) |
1da177e4 | 716 | == 0x04; |
8eccbb6f | 717 | if (data->type == smsc47m2) { |
51f2cca1 | 718 | fan1 = (smsc47m1_read_value(data, SMSC47M2_REG_TPIN1) |
8eccbb6f | 719 | & 0x0d) == 0x09; |
51f2cca1 | 720 | fan2 = (smsc47m1_read_value(data, SMSC47M2_REG_TPIN2) |
8eccbb6f | 721 | & 0x0d) == 0x09; |
51f2cca1 | 722 | fan3 = (smsc47m1_read_value(data, SMSC47M2_REG_TPIN3) |
8eccbb6f | 723 | & 0x0d) == 0x0d; |
51f2cca1 | 724 | pwm3 = (smsc47m1_read_value(data, SMSC47M2_REG_PPIN3) |
8eccbb6f JD |
725 | & 0x0d) == 0x08; |
726 | } else { | |
51f2cca1 | 727 | fan1 = (smsc47m1_read_value(data, SMSC47M1_REG_TPIN(0)) |
8eccbb6f | 728 | & 0x05) == 0x05; |
51f2cca1 | 729 | fan2 = (smsc47m1_read_value(data, SMSC47M1_REG_TPIN(1)) |
8eccbb6f JD |
730 | & 0x05) == 0x05; |
731 | fan3 = 0; | |
732 | pwm3 = 0; | |
733 | } | |
734 | if (!(fan1 || fan2 || fan3 || pwm1 || pwm2 || pwm3)) { | |
51f2cca1 | 735 | dev_warn(dev, "Device not configured, will not use\n"); |
1da177e4 LT |
736 | err = -ENODEV; |
737 | goto error_free; | |
738 | } | |
739 | ||
85a0c0d1 GR |
740 | /* |
741 | * Some values (fan min, clock dividers, pwm registers) may be | |
742 | * needed before any update is triggered, so we better read them | |
743 | * at least once here. We don't usually do it that way, but in | |
744 | * this particular case, manually reading 5 registers out of 8 | |
745 | * doesn't make much sense and we're better using the existing | |
746 | * function. | |
747 | */ | |
51f2cca1 | 748 | smsc47m1_update_device(dev, 1); |
1da177e4 | 749 | |
943b0830 | 750 | /* Register sysfs hooks */ |
1da177e4 | 751 | if (fan1) { |
7e612685 GR |
752 | err = sysfs_create_group(&dev->kobj, |
753 | &smsc47m1_group_fan1); | |
754 | if (err) | |
ce8c6ce1 | 755 | goto error_remove_files; |
1da177e4 | 756 | } else |
51f2cca1 | 757 | dev_dbg(dev, "Fan 1 not enabled by hardware, skipping\n"); |
1da177e4 LT |
758 | |
759 | if (fan2) { | |
7e612685 GR |
760 | err = sysfs_create_group(&dev->kobj, |
761 | &smsc47m1_group_fan2); | |
762 | if (err) | |
ce8c6ce1 | 763 | goto error_remove_files; |
1da177e4 | 764 | } else |
51f2cca1 | 765 | dev_dbg(dev, "Fan 2 not enabled by hardware, skipping\n"); |
1da177e4 | 766 | |
8eccbb6f | 767 | if (fan3) { |
7e612685 GR |
768 | err = sysfs_create_group(&dev->kobj, |
769 | &smsc47m1_group_fan3); | |
770 | if (err) | |
8eccbb6f | 771 | goto error_remove_files; |
8477d026 | 772 | } else if (data->type == smsc47m2) |
51f2cca1 | 773 | dev_dbg(dev, "Fan 3 not enabled by hardware, skipping\n"); |
8eccbb6f | 774 | |
1da177e4 | 775 | if (pwm1) { |
7e612685 GR |
776 | err = sysfs_create_group(&dev->kobj, |
777 | &smsc47m1_group_pwm1); | |
778 | if (err) | |
ce8c6ce1 | 779 | goto error_remove_files; |
1da177e4 | 780 | } else |
51f2cca1 | 781 | dev_dbg(dev, "PWM 1 not enabled by hardware, skipping\n"); |
8eccbb6f | 782 | |
1da177e4 | 783 | if (pwm2) { |
7e612685 GR |
784 | err = sysfs_create_group(&dev->kobj, |
785 | &smsc47m1_group_pwm2); | |
786 | if (err) | |
ce8c6ce1 | 787 | goto error_remove_files; |
1da177e4 | 788 | } else |
51f2cca1 | 789 | dev_dbg(dev, "PWM 2 not enabled by hardware, skipping\n"); |
1da177e4 | 790 | |
8eccbb6f | 791 | if (pwm3) { |
7e612685 GR |
792 | err = sysfs_create_group(&dev->kobj, |
793 | &smsc47m1_group_pwm3); | |
794 | if (err) | |
8eccbb6f | 795 | goto error_remove_files; |
8477d026 | 796 | } else if (data->type == smsc47m2) |
51f2cca1 | 797 | dev_dbg(dev, "PWM 3 not enabled by hardware, skipping\n"); |
8eccbb6f | 798 | |
7e612685 GR |
799 | err = sysfs_create_group(&dev->kobj, &smsc47m1_group); |
800 | if (err) | |
68a50b56 | 801 | goto error_remove_files; |
ce8c6ce1 | 802 | |
1beeffe4 TJ |
803 | data->hwmon_dev = hwmon_device_register(dev); |
804 | if (IS_ERR(data->hwmon_dev)) { | |
805 | err = PTR_ERR(data->hwmon_dev); | |
ce8c6ce1 JD |
806 | goto error_remove_files; |
807 | } | |
1da177e4 LT |
808 | |
809 | return 0; | |
810 | ||
ce8c6ce1 | 811 | error_remove_files: |
7e612685 | 812 | smsc47m1_remove_files(dev); |
1da177e4 | 813 | error_free: |
04a6217d | 814 | platform_set_drvdata(pdev, NULL); |
1f57ff89 | 815 | kfree(data); |
1da177e4 | 816 | error_release: |
a0e92d70 | 817 | smsc47m1_handle_resources(res->start, sio_data->type, RELEASE, dev); |
1da177e4 LT |
818 | return err; |
819 | } | |
820 | ||
3ecf44b3 | 821 | static int __exit smsc47m1_remove(struct platform_device *pdev) |
1da177e4 | 822 | { |
51f2cca1 JD |
823 | struct smsc47m1_data *data = platform_get_drvdata(pdev); |
824 | struct resource *res; | |
1da177e4 | 825 | |
1beeffe4 | 826 | hwmon_device_unregister(data->hwmon_dev); |
7e612685 | 827 | smsc47m1_remove_files(&pdev->dev); |
1da177e4 | 828 | |
51f2cca1 | 829 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
a0e92d70 | 830 | smsc47m1_handle_resources(res->start, data->type, RELEASE, &pdev->dev); |
04a6217d | 831 | platform_set_drvdata(pdev, NULL); |
943b0830 | 832 | kfree(data); |
1da177e4 LT |
833 | |
834 | return 0; | |
835 | } | |
836 | ||
1da177e4 LT |
837 | static struct smsc47m1_data *smsc47m1_update_device(struct device *dev, |
838 | int init) | |
839 | { | |
51f2cca1 | 840 | struct smsc47m1_data *data = dev_get_drvdata(dev); |
1da177e4 | 841 | |
9a61bf63 | 842 | mutex_lock(&data->update_lock); |
1da177e4 LT |
843 | |
844 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || init) { | |
8eccbb6f JD |
845 | int i, fan_nr; |
846 | fan_nr = data->type == smsc47m2 ? 3 : 2; | |
1da177e4 | 847 | |
8eccbb6f | 848 | for (i = 0; i < fan_nr; i++) { |
51f2cca1 | 849 | data->fan[i] = smsc47m1_read_value(data, |
8eccbb6f | 850 | SMSC47M1_REG_FAN[i]); |
51f2cca1 | 851 | data->fan_preload[i] = smsc47m1_read_value(data, |
8eccbb6f | 852 | SMSC47M1_REG_FAN_PRELOAD[i]); |
51f2cca1 | 853 | data->pwm[i] = smsc47m1_read_value(data, |
8eccbb6f | 854 | SMSC47M1_REG_PWM[i]); |
1da177e4 LT |
855 | } |
856 | ||
51f2cca1 | 857 | i = smsc47m1_read_value(data, SMSC47M1_REG_FANDIV); |
1da177e4 LT |
858 | data->fan_div[0] = (i >> 4) & 0x03; |
859 | data->fan_div[1] = i >> 6; | |
860 | ||
51f2cca1 | 861 | data->alarms = smsc47m1_read_value(data, |
1da177e4 LT |
862 | SMSC47M1_REG_ALARM) >> 6; |
863 | /* Clear alarms if needed */ | |
864 | if (data->alarms) | |
51f2cca1 | 865 | smsc47m1_write_value(data, SMSC47M1_REG_ALARM, 0xC0); |
1da177e4 | 866 | |
8eccbb6f | 867 | if (fan_nr >= 3) { |
51f2cca1 | 868 | data->fan_div[2] = (smsc47m1_read_value(data, |
8eccbb6f | 869 | SMSC47M2_REG_FANDIV3) >> 4) & 0x03; |
51f2cca1 | 870 | data->alarms |= (smsc47m1_read_value(data, |
8eccbb6f JD |
871 | SMSC47M2_REG_ALARM6) & 0x40) >> 4; |
872 | /* Clear alarm if needed */ | |
873 | if (data->alarms & 0x04) | |
51f2cca1 | 874 | smsc47m1_write_value(data, |
8eccbb6f JD |
875 | SMSC47M2_REG_ALARM6, |
876 | 0x40); | |
877 | } | |
878 | ||
1da177e4 LT |
879 | data->last_updated = jiffies; |
880 | } | |
881 | ||
9a61bf63 | 882 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
883 | return data; |
884 | } | |
885 | ||
51f2cca1 JD |
886 | static int __init smsc47m1_device_add(unsigned short address, |
887 | const struct smsc47m1_sio_data *sio_data) | |
888 | { | |
889 | struct resource res = { | |
890 | .start = address, | |
891 | .end = address + SMSC_EXTENT - 1, | |
892 | .name = DRVNAME, | |
893 | .flags = IORESOURCE_IO, | |
894 | }; | |
895 | int err; | |
896 | ||
a0e92d70 | 897 | err = smsc47m1_handle_resources(address, sio_data->type, CHECK, NULL); |
b9acb64a JD |
898 | if (err) |
899 | goto exit; | |
900 | ||
51f2cca1 JD |
901 | pdev = platform_device_alloc(DRVNAME, address); |
902 | if (!pdev) { | |
903 | err = -ENOMEM; | |
512504e9 | 904 | pr_err("Device allocation failed\n"); |
51f2cca1 JD |
905 | goto exit; |
906 | } | |
907 | ||
908 | err = platform_device_add_resources(pdev, &res, 1); | |
909 | if (err) { | |
512504e9 | 910 | pr_err("Device resource addition failed (%d)\n", err); |
51f2cca1 JD |
911 | goto exit_device_put; |
912 | } | |
913 | ||
2df6d811 JD |
914 | err = platform_device_add_data(pdev, sio_data, |
915 | sizeof(struct smsc47m1_sio_data)); | |
916 | if (err) { | |
512504e9 | 917 | pr_err("Platform data allocation failed\n"); |
51f2cca1 JD |
918 | goto exit_device_put; |
919 | } | |
51f2cca1 JD |
920 | |
921 | err = platform_device_add(pdev); | |
922 | if (err) { | |
512504e9 | 923 | pr_err("Device addition failed (%d)\n", err); |
51f2cca1 JD |
924 | goto exit_device_put; |
925 | } | |
926 | ||
927 | return 0; | |
928 | ||
929 | exit_device_put: | |
930 | platform_device_put(pdev); | |
931 | exit: | |
932 | return err; | |
933 | } | |
934 | ||
1da177e4 LT |
935 | static int __init sm_smsc47m1_init(void) |
936 | { | |
51f2cca1 JD |
937 | int err; |
938 | unsigned short address; | |
939 | struct smsc47m1_sio_data sio_data; | |
940 | ||
941 | if (smsc47m1_find(&address, &sio_data)) | |
1da177e4 | 942 | return -ENODEV; |
1da177e4 | 943 | |
3ecf44b3 JD |
944 | /* Sets global pdev as a side effect */ |
945 | err = smsc47m1_device_add(address, &sio_data); | |
51f2cca1 JD |
946 | if (err) |
947 | goto exit; | |
948 | ||
3ecf44b3 | 949 | err = platform_driver_probe(&smsc47m1_driver, smsc47m1_probe); |
51f2cca1 | 950 | if (err) |
3ecf44b3 | 951 | goto exit_device; |
51f2cca1 JD |
952 | |
953 | return 0; | |
954 | ||
3ecf44b3 JD |
955 | exit_device: |
956 | platform_device_unregister(pdev); | |
fa0bff02 | 957 | smsc47m1_restore(&sio_data); |
51f2cca1 JD |
958 | exit: |
959 | return err; | |
1da177e4 LT |
960 | } |
961 | ||
962 | static void __exit sm_smsc47m1_exit(void) | |
963 | { | |
51f2cca1 | 964 | platform_driver_unregister(&smsc47m1_driver); |
fa0bff02 | 965 | smsc47m1_restore(pdev->dev.platform_data); |
3ecf44b3 | 966 | platform_device_unregister(pdev); |
1da177e4 LT |
967 | } |
968 | ||
969 | MODULE_AUTHOR("Mark D. Studebaker <mdsxyz123@yahoo.com>"); | |
970 | MODULE_DESCRIPTION("SMSC LPC47M1xx fan sensors driver"); | |
971 | MODULE_LICENSE("GPL"); | |
972 | ||
973 | module_init(sm_smsc47m1_init); | |
974 | module_exit(sm_smsc47m1_exit); |