Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | lm78.c - Part of lm_sensors, Linux kernel modules for hardware | |
3 | monitoring | |
4 | Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> | |
c40769fe | 5 | Copyright (c) 2007 Jean Delvare <khali@linux-fr.org> |
1da177e4 LT |
6 | |
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
1da177e4 LT |
22 | #include <linux/module.h> |
23 | #include <linux/init.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/jiffies.h> | |
26 | #include <linux/i2c.h> | |
c40769fe JD |
27 | #include <linux/platform_device.h> |
28 | #include <linux/ioport.h> | |
943b0830 | 29 | #include <linux/hwmon.h> |
19f673ed | 30 | #include <linux/hwmon-vid.h> |
943b0830 | 31 | #include <linux/err.h> |
9a61bf63 | 32 | #include <linux/mutex.h> |
1da177e4 LT |
33 | #include <asm/io.h> |
34 | ||
c40769fe JD |
35 | /* ISA device, if found */ |
36 | static struct platform_device *pdev; | |
37 | ||
1da177e4 LT |
38 | /* Addresses to scan */ |
39 | static unsigned short normal_i2c[] = { 0x20, 0x21, 0x22, 0x23, 0x24, | |
40 | 0x25, 0x26, 0x27, 0x28, 0x29, | |
41 | 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, | |
42 | 0x2f, I2C_CLIENT_END }; | |
2d8672c5 | 43 | static unsigned short isa_address = 0x290; |
1da177e4 LT |
44 | |
45 | /* Insmod parameters */ | |
f4b50261 | 46 | I2C_CLIENT_INSMOD_2(lm78, lm79); |
1da177e4 LT |
47 | |
48 | /* Many LM78 constants specified below */ | |
49 | ||
50 | /* Length of ISA address segment */ | |
51 | #define LM78_EXTENT 8 | |
52 | ||
53 | /* Where are the ISA address/data registers relative to the base address */ | |
54 | #define LM78_ADDR_REG_OFFSET 5 | |
55 | #define LM78_DATA_REG_OFFSET 6 | |
56 | ||
57 | /* The LM78 registers */ | |
58 | #define LM78_REG_IN_MAX(nr) (0x2b + (nr) * 2) | |
59 | #define LM78_REG_IN_MIN(nr) (0x2c + (nr) * 2) | |
60 | #define LM78_REG_IN(nr) (0x20 + (nr)) | |
61 | ||
62 | #define LM78_REG_FAN_MIN(nr) (0x3b + (nr)) | |
63 | #define LM78_REG_FAN(nr) (0x28 + (nr)) | |
64 | ||
65 | #define LM78_REG_TEMP 0x27 | |
66 | #define LM78_REG_TEMP_OVER 0x39 | |
67 | #define LM78_REG_TEMP_HYST 0x3a | |
68 | ||
69 | #define LM78_REG_ALARM1 0x41 | |
70 | #define LM78_REG_ALARM2 0x42 | |
71 | ||
72 | #define LM78_REG_VID_FANDIV 0x47 | |
73 | ||
74 | #define LM78_REG_CONFIG 0x40 | |
75 | #define LM78_REG_CHIPID 0x49 | |
76 | #define LM78_REG_I2C_ADDR 0x48 | |
77 | ||
78 | ||
79 | /* Conversions. Rounding and limit checking is only done on the TO_REG | |
80 | variants. */ | |
81 | ||
82 | /* IN: mV, (0V to 4.08V) | |
83 | REG: 16mV/bit */ | |
84 | static inline u8 IN_TO_REG(unsigned long val) | |
85 | { | |
86 | unsigned long nval = SENSORS_LIMIT(val, 0, 4080); | |
87 | return (nval + 8) / 16; | |
88 | } | |
89 | #define IN_FROM_REG(val) ((val) * 16) | |
90 | ||
91 | static inline u8 FAN_TO_REG(long rpm, int div) | |
92 | { | |
93 | if (rpm <= 0) | |
94 | return 255; | |
95 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); | |
96 | } | |
97 | ||
98 | static inline int FAN_FROM_REG(u8 val, int div) | |
99 | { | |
100 | return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div); | |
101 | } | |
102 | ||
103 | /* TEMP: mC (-128C to +127C) | |
104 | REG: 1C/bit, two's complement */ | |
105 | static inline s8 TEMP_TO_REG(int val) | |
106 | { | |
107 | int nval = SENSORS_LIMIT(val, -128000, 127000) ; | |
108 | return nval<0 ? (nval-500)/1000 : (nval+500)/1000; | |
109 | } | |
110 | ||
111 | static inline int TEMP_FROM_REG(s8 val) | |
112 | { | |
113 | return val * 1000; | |
114 | } | |
115 | ||
1da177e4 LT |
116 | #define DIV_FROM_REG(val) (1 << (val)) |
117 | ||
118 | /* There are some complications in a module like this. First off, LM78 chips | |
119 | may be both present on the SMBus and the ISA bus, and we have to handle | |
120 | those cases separately at some places. Second, there might be several | |
121 | LM78 chips available (well, actually, that is probably never done; but | |
122 | it is a clean illustration of how to handle a case like that). Finally, | |
123 | a specific chip may be attached to *both* ISA and SMBus, and we would | |
124 | not like to detect it double. Fortunately, in the case of the LM78 at | |
125 | least, a register tells us what SMBus address we are on, so that helps | |
126 | a bit - except if there could be more than one SMBus. Groan. No solution | |
127 | for this yet. */ | |
128 | ||
c40769fe JD |
129 | /* For ISA chips, we abuse the i2c_client addr and name fields. We also use |
130 | the driver field to differentiate between I2C and ISA chips. */ | |
1da177e4 LT |
131 | struct lm78_data { |
132 | struct i2c_client client; | |
943b0830 | 133 | struct class_device *class_dev; |
9a61bf63 | 134 | struct mutex lock; |
1da177e4 LT |
135 | enum chips type; |
136 | ||
9a61bf63 | 137 | struct mutex update_lock; |
1da177e4 LT |
138 | char valid; /* !=0 if following fields are valid */ |
139 | unsigned long last_updated; /* In jiffies */ | |
140 | ||
141 | u8 in[7]; /* Register value */ | |
142 | u8 in_max[7]; /* Register value */ | |
143 | u8 in_min[7]; /* Register value */ | |
144 | u8 fan[3]; /* Register value */ | |
145 | u8 fan_min[3]; /* Register value */ | |
146 | s8 temp; /* Register value */ | |
147 | s8 temp_over; /* Register value */ | |
148 | s8 temp_hyst; /* Register value */ | |
149 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
150 | u8 vid; /* Register encoding, combined */ | |
151 | u16 alarms; /* Register encoding, combined */ | |
152 | }; | |
153 | ||
154 | ||
155 | static int lm78_attach_adapter(struct i2c_adapter *adapter); | |
156 | static int lm78_detect(struct i2c_adapter *adapter, int address, int kind); | |
157 | static int lm78_detach_client(struct i2c_client *client); | |
158 | ||
c40769fe JD |
159 | static int __devinit lm78_isa_probe(struct platform_device *pdev); |
160 | static int __devexit lm78_isa_remove(struct platform_device *pdev); | |
161 | ||
c59cc301 JD |
162 | static int lm78_read_value(struct lm78_data *data, u8 reg); |
163 | static int lm78_write_value(struct lm78_data *data, u8 reg, u8 value); | |
1da177e4 | 164 | static struct lm78_data *lm78_update_device(struct device *dev); |
c59cc301 | 165 | static void lm78_init_device(struct lm78_data *data); |
1da177e4 LT |
166 | |
167 | ||
168 | static struct i2c_driver lm78_driver = { | |
cdaf7934 | 169 | .driver = { |
cdaf7934 LR |
170 | .name = "lm78", |
171 | }, | |
1da177e4 | 172 | .id = I2C_DRIVERID_LM78, |
1da177e4 LT |
173 | .attach_adapter = lm78_attach_adapter, |
174 | .detach_client = lm78_detach_client, | |
175 | }; | |
176 | ||
c40769fe | 177 | static struct platform_driver lm78_isa_driver = { |
cdaf7934 | 178 | .driver = { |
87218842 | 179 | .owner = THIS_MODULE, |
c40769fe | 180 | .name = "lm78", |
cdaf7934 | 181 | }, |
c40769fe JD |
182 | .probe = lm78_isa_probe, |
183 | .remove = lm78_isa_remove, | |
fde09509 JD |
184 | }; |
185 | ||
186 | ||
1da177e4 LT |
187 | /* 7 Voltages */ |
188 | static ssize_t show_in(struct device *dev, char *buf, int nr) | |
189 | { | |
190 | struct lm78_data *data = lm78_update_device(dev); | |
191 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); | |
192 | } | |
193 | ||
194 | static ssize_t show_in_min(struct device *dev, char *buf, int nr) | |
195 | { | |
196 | struct lm78_data *data = lm78_update_device(dev); | |
197 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); | |
198 | } | |
199 | ||
200 | static ssize_t show_in_max(struct device *dev, char *buf, int nr) | |
201 | { | |
202 | struct lm78_data *data = lm78_update_device(dev); | |
203 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); | |
204 | } | |
205 | ||
206 | static ssize_t set_in_min(struct device *dev, const char *buf, | |
207 | size_t count, int nr) | |
208 | { | |
c40769fe | 209 | struct lm78_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
210 | unsigned long val = simple_strtoul(buf, NULL, 10); |
211 | ||
9a61bf63 | 212 | mutex_lock(&data->update_lock); |
1da177e4 | 213 | data->in_min[nr] = IN_TO_REG(val); |
c59cc301 | 214 | lm78_write_value(data, LM78_REG_IN_MIN(nr), data->in_min[nr]); |
9a61bf63 | 215 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
216 | return count; |
217 | } | |
218 | ||
219 | static ssize_t set_in_max(struct device *dev, const char *buf, | |
220 | size_t count, int nr) | |
221 | { | |
c40769fe | 222 | struct lm78_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
223 | unsigned long val = simple_strtoul(buf, NULL, 10); |
224 | ||
9a61bf63 | 225 | mutex_lock(&data->update_lock); |
1da177e4 | 226 | data->in_max[nr] = IN_TO_REG(val); |
c59cc301 | 227 | lm78_write_value(data, LM78_REG_IN_MAX(nr), data->in_max[nr]); |
9a61bf63 | 228 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
229 | return count; |
230 | } | |
231 | ||
232 | #define show_in_offset(offset) \ | |
233 | static ssize_t \ | |
8627f9ba | 234 | show_in##offset (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
235 | { \ |
236 | return show_in(dev, buf, offset); \ | |
237 | } \ | |
238 | static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ | |
239 | show_in##offset, NULL); \ | |
240 | static ssize_t \ | |
8627f9ba | 241 | show_in##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
242 | { \ |
243 | return show_in_min(dev, buf, offset); \ | |
244 | } \ | |
245 | static ssize_t \ | |
8627f9ba | 246 | show_in##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
247 | { \ |
248 | return show_in_max(dev, buf, offset); \ | |
249 | } \ | |
8627f9ba | 250 | static ssize_t set_in##offset##_min (struct device *dev, struct device_attribute *attr, \ |
1da177e4 LT |
251 | const char *buf, size_t count) \ |
252 | { \ | |
253 | return set_in_min(dev, buf, count, offset); \ | |
254 | } \ | |
8627f9ba | 255 | static ssize_t set_in##offset##_max (struct device *dev, struct device_attribute *attr, \ |
1da177e4 LT |
256 | const char *buf, size_t count) \ |
257 | { \ | |
258 | return set_in_max(dev, buf, count, offset); \ | |
259 | } \ | |
260 | static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
261 | show_in##offset##_min, set_in##offset##_min); \ | |
262 | static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
263 | show_in##offset##_max, set_in##offset##_max); | |
264 | ||
265 | show_in_offset(0); | |
266 | show_in_offset(1); | |
267 | show_in_offset(2); | |
268 | show_in_offset(3); | |
269 | show_in_offset(4); | |
270 | show_in_offset(5); | |
271 | show_in_offset(6); | |
272 | ||
273 | /* Temperature */ | |
8627f9ba | 274 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
275 | { |
276 | struct lm78_data *data = lm78_update_device(dev); | |
277 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp)); | |
278 | } | |
279 | ||
8627f9ba | 280 | static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
281 | { |
282 | struct lm78_data *data = lm78_update_device(dev); | |
283 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over)); | |
284 | } | |
285 | ||
8627f9ba | 286 | static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 | 287 | { |
c40769fe | 288 | struct lm78_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
289 | long val = simple_strtol(buf, NULL, 10); |
290 | ||
9a61bf63 | 291 | mutex_lock(&data->update_lock); |
1da177e4 | 292 | data->temp_over = TEMP_TO_REG(val); |
c59cc301 | 293 | lm78_write_value(data, LM78_REG_TEMP_OVER, data->temp_over); |
9a61bf63 | 294 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
295 | return count; |
296 | } | |
297 | ||
8627f9ba | 298 | static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
299 | { |
300 | struct lm78_data *data = lm78_update_device(dev); | |
301 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst)); | |
302 | } | |
303 | ||
8627f9ba | 304 | static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 | 305 | { |
c40769fe | 306 | struct lm78_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
307 | long val = simple_strtol(buf, NULL, 10); |
308 | ||
9a61bf63 | 309 | mutex_lock(&data->update_lock); |
1da177e4 | 310 | data->temp_hyst = TEMP_TO_REG(val); |
c59cc301 | 311 | lm78_write_value(data, LM78_REG_TEMP_HYST, data->temp_hyst); |
9a61bf63 | 312 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
313 | return count; |
314 | } | |
315 | ||
316 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); | |
317 | static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, | |
318 | show_temp_over, set_temp_over); | |
319 | static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, | |
320 | show_temp_hyst, set_temp_hyst); | |
321 | ||
322 | /* 3 Fans */ | |
323 | static ssize_t show_fan(struct device *dev, char *buf, int nr) | |
324 | { | |
325 | struct lm78_data *data = lm78_update_device(dev); | |
326 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], | |
327 | DIV_FROM_REG(data->fan_div[nr])) ); | |
328 | } | |
329 | ||
330 | static ssize_t show_fan_min(struct device *dev, char *buf, int nr) | |
331 | { | |
332 | struct lm78_data *data = lm78_update_device(dev); | |
333 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr], | |
334 | DIV_FROM_REG(data->fan_div[nr])) ); | |
335 | } | |
336 | ||
337 | static ssize_t set_fan_min(struct device *dev, const char *buf, | |
338 | size_t count, int nr) | |
339 | { | |
c40769fe | 340 | struct lm78_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
341 | unsigned long val = simple_strtoul(buf, NULL, 10); |
342 | ||
9a61bf63 | 343 | mutex_lock(&data->update_lock); |
1da177e4 | 344 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
c59cc301 | 345 | lm78_write_value(data, LM78_REG_FAN_MIN(nr), data->fan_min[nr]); |
9a61bf63 | 346 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
347 | return count; |
348 | } | |
349 | ||
350 | static ssize_t show_fan_div(struct device *dev, char *buf, int nr) | |
351 | { | |
352 | struct lm78_data *data = lm78_update_device(dev); | |
353 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) ); | |
354 | } | |
355 | ||
356 | /* Note: we save and restore the fan minimum here, because its value is | |
357 | determined in part by the fan divisor. This follows the principle of | |
d6e05edc | 358 | least surprise; the user doesn't expect the fan minimum to change just |
1da177e4 LT |
359 | because the divisor changed. */ |
360 | static ssize_t set_fan_div(struct device *dev, const char *buf, | |
361 | size_t count, int nr) | |
362 | { | |
c40769fe | 363 | struct lm78_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
364 | unsigned long val = simple_strtoul(buf, NULL, 10); |
365 | unsigned long min; | |
366 | u8 reg; | |
367 | ||
9a61bf63 | 368 | mutex_lock(&data->update_lock); |
1da177e4 LT |
369 | min = FAN_FROM_REG(data->fan_min[nr], |
370 | DIV_FROM_REG(data->fan_div[nr])); | |
371 | ||
372 | switch (val) { | |
373 | case 1: data->fan_div[nr] = 0; break; | |
374 | case 2: data->fan_div[nr] = 1; break; | |
375 | case 4: data->fan_div[nr] = 2; break; | |
376 | case 8: data->fan_div[nr] = 3; break; | |
377 | default: | |
c40769fe | 378 | dev_err(dev, "fan_div value %ld not " |
1da177e4 | 379 | "supported. Choose one of 1, 2, 4 or 8!\n", val); |
9a61bf63 | 380 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
381 | return -EINVAL; |
382 | } | |
383 | ||
c59cc301 | 384 | reg = lm78_read_value(data, LM78_REG_VID_FANDIV); |
1da177e4 LT |
385 | switch (nr) { |
386 | case 0: | |
387 | reg = (reg & 0xcf) | (data->fan_div[nr] << 4); | |
388 | break; | |
389 | case 1: | |
390 | reg = (reg & 0x3f) | (data->fan_div[nr] << 6); | |
391 | break; | |
392 | } | |
c59cc301 | 393 | lm78_write_value(data, LM78_REG_VID_FANDIV, reg); |
1da177e4 LT |
394 | |
395 | data->fan_min[nr] = | |
396 | FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
c59cc301 | 397 | lm78_write_value(data, LM78_REG_FAN_MIN(nr), data->fan_min[nr]); |
9a61bf63 | 398 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
399 | |
400 | return count; | |
401 | } | |
402 | ||
403 | #define show_fan_offset(offset) \ | |
8627f9ba | 404 | static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
405 | { \ |
406 | return show_fan(dev, buf, offset - 1); \ | |
407 | } \ | |
8627f9ba | 408 | static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
409 | { \ |
410 | return show_fan_min(dev, buf, offset - 1); \ | |
411 | } \ | |
8627f9ba | 412 | static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
413 | { \ |
414 | return show_fan_div(dev, buf, offset - 1); \ | |
415 | } \ | |
8627f9ba | 416 | static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \ |
1da177e4 LT |
417 | const char *buf, size_t count) \ |
418 | { \ | |
419 | return set_fan_min(dev, buf, count, offset - 1); \ | |
420 | } \ | |
421 | static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL);\ | |
422 | static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
423 | show_fan_##offset##_min, set_fan_##offset##_min); | |
424 | ||
8627f9ba | 425 | static ssize_t set_fan_1_div(struct device *dev, struct device_attribute *attr, const char *buf, |
1da177e4 LT |
426 | size_t count) |
427 | { | |
428 | return set_fan_div(dev, buf, count, 0) ; | |
429 | } | |
430 | ||
8627f9ba | 431 | static ssize_t set_fan_2_div(struct device *dev, struct device_attribute *attr, const char *buf, |
1da177e4 LT |
432 | size_t count) |
433 | { | |
434 | return set_fan_div(dev, buf, count, 1) ; | |
435 | } | |
436 | ||
437 | show_fan_offset(1); | |
438 | show_fan_offset(2); | |
439 | show_fan_offset(3); | |
440 | ||
441 | /* Fan 3 divisor is locked in H/W */ | |
442 | static DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, | |
443 | show_fan_1_div, set_fan_1_div); | |
444 | static DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, | |
445 | show_fan_2_div, set_fan_2_div); | |
446 | static DEVICE_ATTR(fan3_div, S_IRUGO, show_fan_3_div, NULL); | |
447 | ||
448 | /* VID */ | |
8627f9ba | 449 | static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
450 | { |
451 | struct lm78_data *data = lm78_update_device(dev); | |
d0d3cd69 | 452 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, 82)); |
1da177e4 LT |
453 | } |
454 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); | |
455 | ||
456 | /* Alarms */ | |
8627f9ba | 457 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
458 | { |
459 | struct lm78_data *data = lm78_update_device(dev); | |
460 | return sprintf(buf, "%u\n", data->alarms); | |
461 | } | |
462 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
463 | ||
464 | /* This function is called when: | |
465 | * lm78_driver is inserted (when this module is loaded), for each | |
466 | available adapter | |
467 | * when a new adapter is inserted (and lm78_driver is still present) */ | |
468 | static int lm78_attach_adapter(struct i2c_adapter *adapter) | |
469 | { | |
470 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
471 | return 0; | |
2ed2dc3c | 472 | return i2c_probe(adapter, &addr_data, lm78_detect); |
1da177e4 LT |
473 | } |
474 | ||
c1685f61 MH |
475 | static struct attribute *lm78_attributes[] = { |
476 | &dev_attr_in0_input.attr, | |
477 | &dev_attr_in0_min.attr, | |
478 | &dev_attr_in0_max.attr, | |
479 | &dev_attr_in1_input.attr, | |
480 | &dev_attr_in1_min.attr, | |
481 | &dev_attr_in1_max.attr, | |
482 | &dev_attr_in2_input.attr, | |
483 | &dev_attr_in2_min.attr, | |
484 | &dev_attr_in2_max.attr, | |
485 | &dev_attr_in3_input.attr, | |
486 | &dev_attr_in3_min.attr, | |
487 | &dev_attr_in3_max.attr, | |
488 | &dev_attr_in4_input.attr, | |
489 | &dev_attr_in4_min.attr, | |
490 | &dev_attr_in4_max.attr, | |
491 | &dev_attr_in5_input.attr, | |
492 | &dev_attr_in5_min.attr, | |
493 | &dev_attr_in5_max.attr, | |
494 | &dev_attr_in6_input.attr, | |
495 | &dev_attr_in6_min.attr, | |
496 | &dev_attr_in6_max.attr, | |
497 | &dev_attr_temp1_input.attr, | |
498 | &dev_attr_temp1_max.attr, | |
499 | &dev_attr_temp1_max_hyst.attr, | |
500 | &dev_attr_fan1_input.attr, | |
501 | &dev_attr_fan1_min.attr, | |
502 | &dev_attr_fan1_div.attr, | |
503 | &dev_attr_fan2_input.attr, | |
504 | &dev_attr_fan2_min.attr, | |
505 | &dev_attr_fan2_div.attr, | |
506 | &dev_attr_fan3_input.attr, | |
507 | &dev_attr_fan3_min.attr, | |
508 | &dev_attr_fan3_div.attr, | |
509 | &dev_attr_alarms.attr, | |
510 | &dev_attr_cpu0_vid.attr, | |
511 | ||
512 | NULL | |
513 | }; | |
514 | ||
515 | static const struct attribute_group lm78_group = { | |
516 | .attrs = lm78_attributes, | |
517 | }; | |
518 | ||
c40769fe JD |
519 | /* I2C devices get this name attribute automatically, but for ISA devices |
520 | we must create it by ourselves. */ | |
521 | static ssize_t show_name(struct device *dev, struct device_attribute | |
522 | *devattr, char *buf) | |
523 | { | |
524 | struct lm78_data *data = dev_get_drvdata(dev); | |
525 | ||
526 | return sprintf(buf, "%s\n", data->client.name); | |
527 | } | |
528 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
529 | ||
2ed2dc3c | 530 | /* This function is called by i2c_probe */ |
d8d20615 | 531 | static int lm78_detect(struct i2c_adapter *adapter, int address, int kind) |
1da177e4 LT |
532 | { |
533 | int i, err; | |
534 | struct i2c_client *new_client; | |
535 | struct lm78_data *data; | |
536 | const char *client_name = ""; | |
1da177e4 | 537 | |
c40769fe | 538 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { |
1da177e4 | 539 | err = -ENODEV; |
c40769fe | 540 | goto ERROR1; |
1da177e4 LT |
541 | } |
542 | ||
543 | /* OK. For now, we presume we have a valid client. We now create the | |
544 | client structure, even though we cannot fill it completely yet. | |
545 | But it allows us to access lm78_{read,write}_value. */ | |
546 | ||
ba9c2e8d | 547 | if (!(data = kzalloc(sizeof(struct lm78_data), GFP_KERNEL))) { |
1da177e4 LT |
548 | err = -ENOMEM; |
549 | goto ERROR1; | |
550 | } | |
1da177e4 LT |
551 | |
552 | new_client = &data->client; | |
1da177e4 LT |
553 | i2c_set_clientdata(new_client, data); |
554 | new_client->addr = address; | |
555 | new_client->adapter = adapter; | |
c40769fe | 556 | new_client->driver = &lm78_driver; |
1da177e4 LT |
557 | |
558 | /* Now, we do the remaining detection. */ | |
559 | if (kind < 0) { | |
c59cc301 | 560 | if (lm78_read_value(data, LM78_REG_CONFIG) & 0x80) { |
1da177e4 LT |
561 | err = -ENODEV; |
562 | goto ERROR2; | |
563 | } | |
c59cc301 | 564 | if (lm78_read_value(data, LM78_REG_I2C_ADDR) != |
c40769fe | 565 | address) { |
1da177e4 LT |
566 | err = -ENODEV; |
567 | goto ERROR2; | |
568 | } | |
569 | } | |
570 | ||
571 | /* Determine the chip type. */ | |
572 | if (kind <= 0) { | |
c59cc301 | 573 | i = lm78_read_value(data, LM78_REG_CHIPID); |
27fe048e JD |
574 | if (i == 0x00 || i == 0x20 /* LM78 */ |
575 | || i == 0x40) /* LM78-J */ | |
1da177e4 | 576 | kind = lm78; |
1da177e4 LT |
577 | else if ((i & 0xfe) == 0xc0) |
578 | kind = lm79; | |
579 | else { | |
580 | if (kind == 0) | |
581 | dev_warn(&adapter->dev, "Ignoring 'force' " | |
582 | "parameter for unknown chip at " | |
583 | "adapter %d, address 0x%02x\n", | |
584 | i2c_adapter_id(adapter), address); | |
585 | err = -ENODEV; | |
586 | goto ERROR2; | |
587 | } | |
588 | } | |
589 | ||
590 | if (kind == lm78) { | |
591 | client_name = "lm78"; | |
1da177e4 LT |
592 | } else if (kind == lm79) { |
593 | client_name = "lm79"; | |
594 | } | |
595 | ||
596 | /* Fill in the remaining client fields and put into the global list */ | |
597 | strlcpy(new_client->name, client_name, I2C_NAME_SIZE); | |
598 | data->type = kind; | |
599 | ||
1da177e4 LT |
600 | /* Tell the I2C layer a new client has arrived */ |
601 | if ((err = i2c_attach_client(new_client))) | |
602 | goto ERROR2; | |
603 | ||
604 | /* Initialize the LM78 chip */ | |
c59cc301 | 605 | lm78_init_device(data); |
1da177e4 | 606 | |
1da177e4 | 607 | /* Register sysfs hooks */ |
c1685f61 MH |
608 | if ((err = sysfs_create_group(&new_client->dev.kobj, &lm78_group))) |
609 | goto ERROR3; | |
610 | ||
943b0830 MH |
611 | data->class_dev = hwmon_device_register(&new_client->dev); |
612 | if (IS_ERR(data->class_dev)) { | |
613 | err = PTR_ERR(data->class_dev); | |
c1685f61 | 614 | goto ERROR4; |
943b0830 MH |
615 | } |
616 | ||
1da177e4 LT |
617 | return 0; |
618 | ||
c1685f61 MH |
619 | ERROR4: |
620 | sysfs_remove_group(&new_client->dev.kobj, &lm78_group); | |
943b0830 MH |
621 | ERROR3: |
622 | i2c_detach_client(new_client); | |
1da177e4 LT |
623 | ERROR2: |
624 | kfree(data); | |
625 | ERROR1: | |
1da177e4 LT |
626 | return err; |
627 | } | |
628 | ||
629 | static int lm78_detach_client(struct i2c_client *client) | |
630 | { | |
943b0830 | 631 | struct lm78_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
632 | int err; |
633 | ||
943b0830 | 634 | hwmon_device_unregister(data->class_dev); |
c1685f61 | 635 | sysfs_remove_group(&client->dev.kobj, &lm78_group); |
943b0830 | 636 | |
7bef5594 | 637 | if ((err = i2c_detach_client(client))) |
1da177e4 | 638 | return err; |
1da177e4 | 639 | |
c40769fe JD |
640 | kfree(data); |
641 | ||
642 | return 0; | |
643 | } | |
644 | ||
645 | static int __devinit lm78_isa_probe(struct platform_device *pdev) | |
646 | { | |
647 | int err; | |
648 | struct lm78_data *data; | |
649 | struct resource *res; | |
650 | const char *name; | |
651 | ||
652 | /* Reserve the ISA region */ | |
653 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); | |
654 | if (!request_region(res->start, LM78_EXTENT, "lm78")) { | |
655 | err = -EBUSY; | |
656 | goto exit; | |
657 | } | |
658 | ||
659 | if (!(data = kzalloc(sizeof(struct lm78_data), GFP_KERNEL))) { | |
660 | err = -ENOMEM; | |
661 | goto exit_release_region; | |
662 | } | |
663 | mutex_init(&data->lock); | |
664 | data->client.addr = res->start; | |
665 | i2c_set_clientdata(&data->client, data); | |
666 | platform_set_drvdata(pdev, data); | |
667 | ||
c59cc301 | 668 | if (lm78_read_value(data, LM78_REG_CHIPID) & 0x80) { |
c40769fe JD |
669 | data->type = lm79; |
670 | name = "lm79"; | |
671 | } else { | |
672 | data->type = lm78; | |
673 | name = "lm78"; | |
674 | } | |
675 | strlcpy(data->client.name, name, I2C_NAME_SIZE); | |
676 | ||
677 | /* Initialize the LM78 chip */ | |
c59cc301 | 678 | lm78_init_device(data); |
c40769fe JD |
679 | |
680 | /* Register sysfs hooks */ | |
681 | if ((err = sysfs_create_group(&pdev->dev.kobj, &lm78_group)) | |
682 | || (err = device_create_file(&pdev->dev, &dev_attr_name))) | |
683 | goto exit_remove_files; | |
684 | ||
685 | data->class_dev = hwmon_device_register(&pdev->dev); | |
686 | if (IS_ERR(data->class_dev)) { | |
687 | err = PTR_ERR(data->class_dev); | |
688 | goto exit_remove_files; | |
689 | } | |
690 | ||
691 | return 0; | |
692 | ||
693 | exit_remove_files: | |
694 | sysfs_remove_group(&pdev->dev.kobj, &lm78_group); | |
695 | device_remove_file(&pdev->dev, &dev_attr_name); | |
696 | kfree(data); | |
697 | exit_release_region: | |
698 | release_region(res->start, LM78_EXTENT); | |
699 | exit: | |
700 | return err; | |
701 | } | |
702 | ||
703 | static int __devexit lm78_isa_remove(struct platform_device *pdev) | |
704 | { | |
705 | struct lm78_data *data = platform_get_drvdata(pdev); | |
1da177e4 | 706 | |
c40769fe JD |
707 | hwmon_device_unregister(data->class_dev); |
708 | sysfs_remove_group(&pdev->dev.kobj, &lm78_group); | |
709 | device_remove_file(&pdev->dev, &dev_attr_name); | |
710 | release_region(data->client.addr, LM78_EXTENT); | |
943b0830 | 711 | kfree(data); |
1da177e4 LT |
712 | |
713 | return 0; | |
714 | } | |
715 | ||
44bbe87e | 716 | /* The SMBus locks itself, but ISA access must be locked explicitly! |
1da177e4 LT |
717 | We don't want to lock the whole ISA bus, so we lock each client |
718 | separately. | |
719 | We ignore the LM78 BUSY flag at this moment - it could lead to deadlocks, | |
720 | would slow down the LM78 access and should not be necessary. */ | |
c59cc301 | 721 | static int lm78_read_value(struct lm78_data *data, u8 reg) |
1da177e4 | 722 | { |
c59cc301 JD |
723 | struct i2c_client *client = &data->client; |
724 | ||
c40769fe | 725 | if (!client->driver) { /* ISA device */ |
c59cc301 | 726 | int res; |
9a61bf63 | 727 | mutex_lock(&data->lock); |
1da177e4 LT |
728 | outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET); |
729 | res = inb_p(client->addr + LM78_DATA_REG_OFFSET); | |
9a61bf63 | 730 | mutex_unlock(&data->lock); |
1da177e4 LT |
731 | return res; |
732 | } else | |
733 | return i2c_smbus_read_byte_data(client, reg); | |
734 | } | |
735 | ||
44bbe87e | 736 | /* The SMBus locks itself, but ISA access muse be locked explicitly! |
1da177e4 LT |
737 | We don't want to lock the whole ISA bus, so we lock each client |
738 | separately. | |
739 | We ignore the LM78 BUSY flag at this moment - it could lead to deadlocks, | |
740 | would slow down the LM78 access and should not be necessary. | |
741 | There are some ugly typecasts here, but the good new is - they should | |
742 | nowhere else be necessary! */ | |
c59cc301 | 743 | static int lm78_write_value(struct lm78_data *data, u8 reg, u8 value) |
1da177e4 | 744 | { |
c59cc301 JD |
745 | struct i2c_client *client = &data->client; |
746 | ||
c40769fe | 747 | if (!client->driver) { /* ISA device */ |
9a61bf63 | 748 | mutex_lock(&data->lock); |
1da177e4 LT |
749 | outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET); |
750 | outb_p(value, client->addr + LM78_DATA_REG_OFFSET); | |
9a61bf63 | 751 | mutex_unlock(&data->lock); |
1da177e4 LT |
752 | return 0; |
753 | } else | |
754 | return i2c_smbus_write_byte_data(client, reg, value); | |
755 | } | |
756 | ||
c59cc301 | 757 | static void lm78_init_device(struct lm78_data *data) |
1da177e4 | 758 | { |
c40769fe JD |
759 | u8 config; |
760 | int i; | |
1da177e4 LT |
761 | |
762 | /* Start monitoring */ | |
c59cc301 | 763 | config = lm78_read_value(data, LM78_REG_CONFIG); |
c40769fe | 764 | if ((config & 0x09) != 0x01) |
c59cc301 | 765 | lm78_write_value(data, LM78_REG_CONFIG, |
1da177e4 | 766 | (config & 0xf7) | 0x01); |
c40769fe JD |
767 | |
768 | /* A few vars need to be filled upon startup */ | |
769 | for (i = 0; i < 3; i++) { | |
c59cc301 | 770 | data->fan_min[i] = lm78_read_value(data, |
c40769fe JD |
771 | LM78_REG_FAN_MIN(i)); |
772 | } | |
773 | ||
774 | mutex_init(&data->update_lock); | |
1da177e4 LT |
775 | } |
776 | ||
777 | static struct lm78_data *lm78_update_device(struct device *dev) | |
778 | { | |
c40769fe | 779 | struct lm78_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
780 | int i; |
781 | ||
9a61bf63 | 782 | mutex_lock(&data->update_lock); |
1da177e4 LT |
783 | |
784 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
785 | || !data->valid) { | |
786 | ||
c40769fe | 787 | dev_dbg(dev, "Starting lm78 update\n"); |
1da177e4 LT |
788 | |
789 | for (i = 0; i <= 6; i++) { | |
790 | data->in[i] = | |
c59cc301 | 791 | lm78_read_value(data, LM78_REG_IN(i)); |
1da177e4 | 792 | data->in_min[i] = |
c59cc301 | 793 | lm78_read_value(data, LM78_REG_IN_MIN(i)); |
1da177e4 | 794 | data->in_max[i] = |
c59cc301 | 795 | lm78_read_value(data, LM78_REG_IN_MAX(i)); |
1da177e4 LT |
796 | } |
797 | for (i = 0; i < 3; i++) { | |
798 | data->fan[i] = | |
c59cc301 | 799 | lm78_read_value(data, LM78_REG_FAN(i)); |
1da177e4 | 800 | data->fan_min[i] = |
c59cc301 | 801 | lm78_read_value(data, LM78_REG_FAN_MIN(i)); |
1da177e4 | 802 | } |
c59cc301 | 803 | data->temp = lm78_read_value(data, LM78_REG_TEMP); |
1da177e4 | 804 | data->temp_over = |
c59cc301 | 805 | lm78_read_value(data, LM78_REG_TEMP_OVER); |
1da177e4 | 806 | data->temp_hyst = |
c59cc301 JD |
807 | lm78_read_value(data, LM78_REG_TEMP_HYST); |
808 | i = lm78_read_value(data, LM78_REG_VID_FANDIV); | |
1da177e4 LT |
809 | data->vid = i & 0x0f; |
810 | if (data->type == lm79) | |
811 | data->vid |= | |
c59cc301 | 812 | (lm78_read_value(data, LM78_REG_CHIPID) & |
1da177e4 LT |
813 | 0x01) << 4; |
814 | else | |
815 | data->vid |= 0x10; | |
816 | data->fan_div[0] = (i >> 4) & 0x03; | |
817 | data->fan_div[1] = i >> 6; | |
c59cc301 JD |
818 | data->alarms = lm78_read_value(data, LM78_REG_ALARM1) + |
819 | (lm78_read_value(data, LM78_REG_ALARM2) << 8); | |
1da177e4 LT |
820 | data->last_updated = jiffies; |
821 | data->valid = 1; | |
822 | ||
823 | data->fan_div[2] = 1; | |
824 | } | |
825 | ||
9a61bf63 | 826 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
827 | |
828 | return data; | |
829 | } | |
830 | ||
c40769fe JD |
831 | /* return 1 if a supported chip is found, 0 otherwise */ |
832 | static int __init lm78_isa_found(unsigned short address) | |
833 | { | |
834 | int val, save, found = 0; | |
835 | ||
836 | if (!request_region(address, LM78_EXTENT, "lm78")) | |
837 | return 0; | |
838 | ||
839 | #define REALLY_SLOW_IO | |
840 | /* We need the timeouts for at least some LM78-like | |
841 | chips. But only if we read 'undefined' registers. */ | |
842 | val = inb_p(address + 1); | |
843 | if (inb_p(address + 2) != val | |
844 | || inb_p(address + 3) != val | |
845 | || inb_p(address + 7) != val) | |
846 | goto release; | |
847 | #undef REALLY_SLOW_IO | |
848 | ||
849 | /* We should be able to change the 7 LSB of the address port. The | |
850 | MSB (busy flag) should be clear initially, set after the write. */ | |
851 | save = inb_p(address + LM78_ADDR_REG_OFFSET); | |
852 | if (save & 0x80) | |
853 | goto release; | |
854 | val = ~save & 0x7f; | |
855 | outb_p(val, address + LM78_ADDR_REG_OFFSET); | |
856 | if (inb_p(address + LM78_ADDR_REG_OFFSET) != (val | 0x80)) { | |
857 | outb_p(save, address + LM78_ADDR_REG_OFFSET); | |
858 | goto release; | |
859 | } | |
860 | ||
861 | /* We found a device, now see if it could be an LM78 */ | |
862 | outb_p(LM78_REG_CONFIG, address + LM78_ADDR_REG_OFFSET); | |
863 | val = inb_p(address + LM78_DATA_REG_OFFSET); | |
864 | if (val & 0x80) | |
865 | goto release; | |
866 | outb_p(LM78_REG_I2C_ADDR, address + LM78_ADDR_REG_OFFSET); | |
867 | val = inb_p(address + LM78_DATA_REG_OFFSET); | |
868 | if (val < 0x03 || val > 0x77) /* Not a valid I2C address */ | |
869 | goto release; | |
870 | ||
871 | /* The busy flag should be clear again */ | |
872 | if (inb_p(address + LM78_ADDR_REG_OFFSET) & 0x80) | |
873 | goto release; | |
874 | ||
875 | /* Explicitly prevent the misdetection of Winbond chips */ | |
876 | outb_p(0x4f, address + LM78_ADDR_REG_OFFSET); | |
877 | val = inb_p(address + LM78_DATA_REG_OFFSET); | |
878 | if (val == 0xa3 || val == 0x5c) | |
879 | goto release; | |
880 | ||
881 | /* Explicitly prevent the misdetection of ITE chips */ | |
882 | outb_p(0x58, address + LM78_ADDR_REG_OFFSET); | |
883 | val = inb_p(address + LM78_DATA_REG_OFFSET); | |
884 | if (val == 0x90) | |
885 | goto release; | |
886 | ||
887 | /* Determine the chip type */ | |
888 | outb_p(LM78_REG_CHIPID, address + LM78_ADDR_REG_OFFSET); | |
889 | val = inb_p(address + LM78_DATA_REG_OFFSET); | |
890 | if (val == 0x00 /* LM78 */ | |
891 | || val == 0x40 /* LM78-J */ | |
892 | || (val & 0xfe) == 0xc0) /* LM79 */ | |
893 | found = 1; | |
894 | ||
895 | if (found) | |
896 | pr_info("lm78: Found an %s chip at %#x\n", | |
897 | val & 0x80 ? "LM79" : "LM78", (int)address); | |
898 | ||
899 | release: | |
900 | release_region(address, LM78_EXTENT); | |
901 | return found; | |
902 | } | |
903 | ||
904 | static int __init lm78_isa_device_add(unsigned short address) | |
905 | { | |
906 | struct resource res = { | |
907 | .start = address, | |
908 | .end = address + LM78_EXTENT, | |
909 | .name = "lm78", | |
910 | .flags = IORESOURCE_IO, | |
911 | }; | |
912 | int err; | |
913 | ||
914 | pdev = platform_device_alloc("lm78", address); | |
915 | if (!pdev) { | |
916 | err = -ENOMEM; | |
917 | printk(KERN_ERR "lm78: Device allocation failed\n"); | |
918 | goto exit; | |
919 | } | |
920 | ||
921 | err = platform_device_add_resources(pdev, &res, 1); | |
922 | if (err) { | |
923 | printk(KERN_ERR "lm78: Device resource addition failed " | |
924 | "(%d)\n", err); | |
925 | goto exit_device_put; | |
926 | } | |
927 | ||
928 | err = platform_device_add(pdev); | |
929 | if (err) { | |
930 | printk(KERN_ERR "lm78: Device addition failed (%d)\n", | |
931 | err); | |
932 | goto exit_device_put; | |
933 | } | |
934 | ||
935 | return 0; | |
936 | ||
937 | exit_device_put: | |
938 | platform_device_put(pdev); | |
939 | exit: | |
940 | pdev = NULL; | |
941 | return err; | |
942 | } | |
943 | ||
1da177e4 LT |
944 | static int __init sm_lm78_init(void) |
945 | { | |
fde09509 JD |
946 | int res; |
947 | ||
948 | res = i2c_add_driver(&lm78_driver); | |
949 | if (res) | |
c40769fe JD |
950 | goto exit; |
951 | ||
952 | if (lm78_isa_found(isa_address)) { | |
953 | res = platform_driver_register(&lm78_isa_driver); | |
954 | if (res) | |
955 | goto exit_unreg_i2c_driver; | |
fde09509 | 956 | |
c40769fe JD |
957 | /* Sets global pdev as a side effect */ |
958 | res = lm78_isa_device_add(isa_address); | |
959 | if (res) | |
960 | goto exit_unreg_isa_driver; | |
961 | } | |
fde09509 JD |
962 | |
963 | return 0; | |
c40769fe JD |
964 | |
965 | exit_unreg_isa_driver: | |
966 | platform_driver_unregister(&lm78_isa_driver); | |
967 | exit_unreg_i2c_driver: | |
968 | i2c_del_driver(&lm78_driver); | |
969 | exit: | |
970 | return res; | |
1da177e4 LT |
971 | } |
972 | ||
973 | static void __exit sm_lm78_exit(void) | |
974 | { | |
c40769fe JD |
975 | if (pdev) { |
976 | platform_device_unregister(pdev); | |
977 | platform_driver_unregister(&lm78_isa_driver); | |
978 | } | |
1da177e4 LT |
979 | i2c_del_driver(&lm78_driver); |
980 | } | |
981 | ||
982 | ||
983 | ||
984 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>"); | |
27fe048e | 985 | MODULE_DESCRIPTION("LM78/LM79 driver"); |
1da177e4 LT |
986 | MODULE_LICENSE("GPL"); |
987 | ||
988 | module_init(sm_lm78_init); | |
989 | module_exit(sm_lm78_exit); |