]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | it87.c - Part of lm_sensors, Linux kernel modules for hardware | |
3 | monitoring. | |
4 | ||
91749996 | 5 | Supports: IT8705F Super I/O chip w/LPC interface |
8e9afcbb | 6 | IT8712F Super I/O chip w/LPC interface |
17d648bf | 7 | IT8716F Super I/O chip w/LPC interface |
87673dd7 | 8 | IT8718F Super I/O chip w/LPC interface |
1da177e4 LT |
9 | Sis950 A clone of the IT8705F |
10 | ||
11 | Copyright (C) 2001 Chris Gauthron <chrisg@0-in.com> | |
b19367c6 | 12 | Copyright (C) 2005-2006 Jean Delvare <khali@linux-fr.org> |
1da177e4 LT |
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 | */ | |
28 | ||
1da177e4 LT |
29 | #include <linux/module.h> |
30 | #include <linux/init.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/jiffies.h> | |
33 | #include <linux/i2c.h> | |
fde09509 | 34 | #include <linux/i2c-isa.h> |
943b0830 | 35 | #include <linux/hwmon.h> |
303760b4 JD |
36 | #include <linux/hwmon-sysfs.h> |
37 | #include <linux/hwmon-vid.h> | |
943b0830 | 38 | #include <linux/err.h> |
9a61bf63 | 39 | #include <linux/mutex.h> |
87808be4 | 40 | #include <linux/sysfs.h> |
1da177e4 LT |
41 | #include <asm/io.h> |
42 | ||
43 | ||
91749996 | 44 | static unsigned short isa_address; |
8e9afcbb | 45 | enum chips { it87, it8712, it8716, it8718 }; |
1da177e4 LT |
46 | |
47 | #define REG 0x2e /* The register to read/write */ | |
48 | #define DEV 0x07 /* Register: Logical device select */ | |
49 | #define VAL 0x2f /* The value to read/write */ | |
50 | #define PME 0x04 /* The device with the fan registers in it */ | |
87673dd7 | 51 | #define GPIO 0x07 /* The device with the IT8718F VID value in it */ |
1da177e4 LT |
52 | #define DEVID 0x20 /* Register: Device ID */ |
53 | #define DEVREV 0x22 /* Register: Device Revision */ | |
54 | ||
55 | static inline int | |
56 | superio_inb(int reg) | |
57 | { | |
58 | outb(reg, REG); | |
59 | return inb(VAL); | |
60 | } | |
61 | ||
62 | static int superio_inw(int reg) | |
63 | { | |
64 | int val; | |
65 | outb(reg++, REG); | |
66 | val = inb(VAL) << 8; | |
67 | outb(reg, REG); | |
68 | val |= inb(VAL); | |
69 | return val; | |
70 | } | |
71 | ||
72 | static inline void | |
87673dd7 | 73 | superio_select(int ldn) |
1da177e4 LT |
74 | { |
75 | outb(DEV, REG); | |
87673dd7 | 76 | outb(ldn, VAL); |
1da177e4 LT |
77 | } |
78 | ||
79 | static inline void | |
80 | superio_enter(void) | |
81 | { | |
82 | outb(0x87, REG); | |
83 | outb(0x01, REG); | |
84 | outb(0x55, REG); | |
85 | outb(0x55, REG); | |
86 | } | |
87 | ||
88 | static inline void | |
89 | superio_exit(void) | |
90 | { | |
91 | outb(0x02, REG); | |
92 | outb(0x02, VAL); | |
93 | } | |
94 | ||
87673dd7 | 95 | /* Logical device 4 registers */ |
1da177e4 LT |
96 | #define IT8712F_DEVID 0x8712 |
97 | #define IT8705F_DEVID 0x8705 | |
17d648bf | 98 | #define IT8716F_DEVID 0x8716 |
87673dd7 | 99 | #define IT8718F_DEVID 0x8718 |
1da177e4 LT |
100 | #define IT87_ACT_REG 0x30 |
101 | #define IT87_BASE_REG 0x60 | |
102 | ||
87673dd7 JD |
103 | /* Logical device 7 registers (IT8712F and later) */ |
104 | #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ | |
105 | #define IT87_SIO_VID_REG 0xfc /* VID value */ | |
106 | ||
1da177e4 LT |
107 | /* Update battery voltage after every reading if true */ |
108 | static int update_vbat; | |
109 | ||
110 | /* Not all BIOSes properly configure the PWM registers */ | |
111 | static int fix_pwm_polarity; | |
112 | ||
87673dd7 | 113 | /* Values read from Super-I/O config space */ |
1da177e4 | 114 | static u16 chip_type; |
87673dd7 | 115 | static u8 vid_value; |
1da177e4 LT |
116 | |
117 | /* Many IT87 constants specified below */ | |
118 | ||
119 | /* Length of ISA address segment */ | |
120 | #define IT87_EXTENT 8 | |
121 | ||
122 | /* Where are the ISA address/data registers relative to the base address */ | |
123 | #define IT87_ADDR_REG_OFFSET 5 | |
124 | #define IT87_DATA_REG_OFFSET 6 | |
125 | ||
126 | /*----- The IT87 registers -----*/ | |
127 | ||
128 | #define IT87_REG_CONFIG 0x00 | |
129 | ||
130 | #define IT87_REG_ALARM1 0x01 | |
131 | #define IT87_REG_ALARM2 0x02 | |
132 | #define IT87_REG_ALARM3 0x03 | |
133 | ||
87673dd7 JD |
134 | /* The IT8718F has the VID value in a different register, in Super-I/O |
135 | configuration space. */ | |
1da177e4 | 136 | #define IT87_REG_VID 0x0a |
17d648bf JD |
137 | /* Warning: register 0x0b is used for something completely different in |
138 | new chips/revisions. I suspect only 16-bit tachometer mode will work | |
139 | for these. */ | |
1da177e4 | 140 | #define IT87_REG_FAN_DIV 0x0b |
17d648bf | 141 | #define IT87_REG_FAN_16BIT 0x0c |
1da177e4 LT |
142 | |
143 | /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ | |
144 | ||
145 | #define IT87_REG_FAN(nr) (0x0d + (nr)) | |
146 | #define IT87_REG_FAN_MIN(nr) (0x10 + (nr)) | |
17d648bf JD |
147 | #define IT87_REG_FANX(nr) (0x18 + (nr)) |
148 | #define IT87_REG_FANX_MIN(nr) (0x1b + (nr)) | |
1da177e4 LT |
149 | #define IT87_REG_FAN_MAIN_CTRL 0x13 |
150 | #define IT87_REG_FAN_CTL 0x14 | |
151 | #define IT87_REG_PWM(nr) (0x15 + (nr)) | |
152 | ||
153 | #define IT87_REG_VIN(nr) (0x20 + (nr)) | |
154 | #define IT87_REG_TEMP(nr) (0x29 + (nr)) | |
155 | ||
156 | #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) | |
157 | #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) | |
158 | #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) | |
159 | #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) | |
160 | ||
1da177e4 LT |
161 | #define IT87_REG_VIN_ENABLE 0x50 |
162 | #define IT87_REG_TEMP_ENABLE 0x51 | |
163 | ||
164 | #define IT87_REG_CHIPID 0x58 | |
165 | ||
166 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255)) | |
167 | #define IN_FROM_REG(val) ((val) * 16) | |
168 | ||
169 | static inline u8 FAN_TO_REG(long rpm, int div) | |
170 | { | |
171 | if (rpm == 0) | |
172 | return 255; | |
173 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
174 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, | |
175 | 254); | |
176 | } | |
177 | ||
17d648bf JD |
178 | static inline u16 FAN16_TO_REG(long rpm) |
179 | { | |
180 | if (rpm == 0) | |
181 | return 0xffff; | |
182 | return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); | |
183 | } | |
184 | ||
1da177e4 | 185 | #define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div))) |
17d648bf JD |
186 | /* The divider is fixed to 2 in 16-bit mode */ |
187 | #define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2)) | |
1da177e4 LT |
188 | |
189 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\ | |
190 | ((val)+500)/1000),-128,127)) | |
191 | #define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000) | |
192 | ||
1da177e4 LT |
193 | #define PWM_TO_REG(val) ((val) >> 1) |
194 | #define PWM_FROM_REG(val) (((val)&0x7f) << 1) | |
195 | ||
196 | static int DIV_TO_REG(int val) | |
197 | { | |
198 | int answer = 0; | |
b9e349f7 | 199 | while (answer < 7 && (val >>= 1)) |
1da177e4 LT |
200 | answer++; |
201 | return answer; | |
202 | } | |
203 | #define DIV_FROM_REG(val) (1 << (val)) | |
204 | ||
205 | ||
206 | /* For each registered IT87, we need to keep some data in memory. That | |
207 | data is pointed to by it87_list[NR]->data. The structure itself is | |
208 | dynamically allocated, at the same time when a new it87 client is | |
209 | allocated. */ | |
210 | struct it87_data { | |
211 | struct i2c_client client; | |
943b0830 | 212 | struct class_device *class_dev; |
9a61bf63 | 213 | struct mutex lock; |
1da177e4 LT |
214 | enum chips type; |
215 | ||
9a61bf63 | 216 | struct mutex update_lock; |
1da177e4 LT |
217 | char valid; /* !=0 if following fields are valid */ |
218 | unsigned long last_updated; /* In jiffies */ | |
219 | ||
220 | u8 in[9]; /* Register value */ | |
3543a53f JD |
221 | u8 in_max[8]; /* Register value */ |
222 | u8 in_min[8]; /* Register value */ | |
9060f8bd | 223 | u8 has_fan; /* Bitfield, fans enabled */ |
17d648bf JD |
224 | u16 fan[3]; /* Register values, possibly combined */ |
225 | u16 fan_min[3]; /* Register values, possibly combined */ | |
1da177e4 LT |
226 | u8 temp[3]; /* Register value */ |
227 | u8 temp_high[3]; /* Register value */ | |
228 | u8 temp_low[3]; /* Register value */ | |
229 | u8 sensor; /* Register value */ | |
230 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
231 | u8 vid; /* Register encoding, combined */ | |
a7be58a1 | 232 | u8 vrm; |
1da177e4 LT |
233 | u32 alarms; /* Register encoding, combined */ |
234 | u8 fan_main_ctrl; /* Register value */ | |
235 | u8 manual_pwm_ctl[3]; /* manual PWM value set by user */ | |
236 | }; | |
237 | ||
238 | ||
8e9afcbb | 239 | static int it87_detect(struct i2c_adapter *adapter); |
1da177e4 LT |
240 | static int it87_detach_client(struct i2c_client *client); |
241 | ||
f6c27fc1 | 242 | static int it87_read_value(struct i2c_client *client, u8 reg); |
8e9afcbb | 243 | static void it87_write_value(struct i2c_client *client, u8 reg, u8 value); |
1da177e4 LT |
244 | static struct it87_data *it87_update_device(struct device *dev); |
245 | static int it87_check_pwm(struct i2c_client *client); | |
246 | static void it87_init_client(struct i2c_client *client, struct it87_data *data); | |
247 | ||
248 | ||
fde09509 | 249 | static struct i2c_driver it87_isa_driver = { |
cdaf7934 | 250 | .driver = { |
87218842 | 251 | .owner = THIS_MODULE, |
cdaf7934 LR |
252 | .name = "it87-isa", |
253 | }, | |
8e9afcbb | 254 | .attach_adapter = it87_detect, |
fde09509 JD |
255 | .detach_client = it87_detach_client, |
256 | }; | |
257 | ||
258 | ||
20ad93d4 JD |
259 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
260 | char *buf) | |
1da177e4 | 261 | { |
20ad93d4 JD |
262 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
263 | int nr = sensor_attr->index; | |
264 | ||
1da177e4 LT |
265 | struct it87_data *data = it87_update_device(dev); |
266 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); | |
267 | } | |
268 | ||
20ad93d4 JD |
269 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, |
270 | char *buf) | |
1da177e4 | 271 | { |
20ad93d4 JD |
272 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
273 | int nr = sensor_attr->index; | |
274 | ||
1da177e4 LT |
275 | struct it87_data *data = it87_update_device(dev); |
276 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); | |
277 | } | |
278 | ||
20ad93d4 JD |
279 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, |
280 | char *buf) | |
1da177e4 | 281 | { |
20ad93d4 JD |
282 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
283 | int nr = sensor_attr->index; | |
284 | ||
1da177e4 LT |
285 | struct it87_data *data = it87_update_device(dev); |
286 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); | |
287 | } | |
288 | ||
20ad93d4 JD |
289 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
290 | const char *buf, size_t count) | |
1da177e4 | 291 | { |
20ad93d4 JD |
292 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
293 | int nr = sensor_attr->index; | |
294 | ||
1da177e4 LT |
295 | struct i2c_client *client = to_i2c_client(dev); |
296 | struct it87_data *data = i2c_get_clientdata(client); | |
297 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
298 | ||
9a61bf63 | 299 | mutex_lock(&data->update_lock); |
1da177e4 LT |
300 | data->in_min[nr] = IN_TO_REG(val); |
301 | it87_write_value(client, IT87_REG_VIN_MIN(nr), | |
302 | data->in_min[nr]); | |
9a61bf63 | 303 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
304 | return count; |
305 | } | |
20ad93d4 JD |
306 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
307 | const char *buf, size_t count) | |
1da177e4 | 308 | { |
20ad93d4 JD |
309 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
310 | int nr = sensor_attr->index; | |
311 | ||
1da177e4 LT |
312 | struct i2c_client *client = to_i2c_client(dev); |
313 | struct it87_data *data = i2c_get_clientdata(client); | |
314 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
315 | ||
9a61bf63 | 316 | mutex_lock(&data->update_lock); |
1da177e4 LT |
317 | data->in_max[nr] = IN_TO_REG(val); |
318 | it87_write_value(client, IT87_REG_VIN_MAX(nr), | |
319 | data->in_max[nr]); | |
9a61bf63 | 320 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
321 | return count; |
322 | } | |
323 | ||
324 | #define show_in_offset(offset) \ | |
20ad93d4 JD |
325 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
326 | show_in, NULL, offset); | |
1da177e4 LT |
327 | |
328 | #define limit_in_offset(offset) \ | |
20ad93d4 JD |
329 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
330 | show_in_min, set_in_min, offset); \ | |
331 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
332 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
333 | |
334 | show_in_offset(0); | |
335 | limit_in_offset(0); | |
336 | show_in_offset(1); | |
337 | limit_in_offset(1); | |
338 | show_in_offset(2); | |
339 | limit_in_offset(2); | |
340 | show_in_offset(3); | |
341 | limit_in_offset(3); | |
342 | show_in_offset(4); | |
343 | limit_in_offset(4); | |
344 | show_in_offset(5); | |
345 | limit_in_offset(5); | |
346 | show_in_offset(6); | |
347 | limit_in_offset(6); | |
348 | show_in_offset(7); | |
349 | limit_in_offset(7); | |
350 | show_in_offset(8); | |
351 | ||
352 | /* 3 temperatures */ | |
20ad93d4 JD |
353 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
354 | char *buf) | |
1da177e4 | 355 | { |
20ad93d4 JD |
356 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
357 | int nr = sensor_attr->index; | |
358 | ||
1da177e4 LT |
359 | struct it87_data *data = it87_update_device(dev); |
360 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
361 | } | |
20ad93d4 JD |
362 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, |
363 | char *buf) | |
1da177e4 | 364 | { |
20ad93d4 JD |
365 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
366 | int nr = sensor_attr->index; | |
367 | ||
1da177e4 LT |
368 | struct it87_data *data = it87_update_device(dev); |
369 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); | |
370 | } | |
20ad93d4 JD |
371 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
372 | char *buf) | |
1da177e4 | 373 | { |
20ad93d4 JD |
374 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
375 | int nr = sensor_attr->index; | |
376 | ||
1da177e4 LT |
377 | struct it87_data *data = it87_update_device(dev); |
378 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); | |
379 | } | |
20ad93d4 JD |
380 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
381 | const char *buf, size_t count) | |
1da177e4 | 382 | { |
20ad93d4 JD |
383 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
384 | int nr = sensor_attr->index; | |
385 | ||
1da177e4 LT |
386 | struct i2c_client *client = to_i2c_client(dev); |
387 | struct it87_data *data = i2c_get_clientdata(client); | |
388 | int val = simple_strtol(buf, NULL, 10); | |
389 | ||
9a61bf63 | 390 | mutex_lock(&data->update_lock); |
1da177e4 LT |
391 | data->temp_high[nr] = TEMP_TO_REG(val); |
392 | it87_write_value(client, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); | |
9a61bf63 | 393 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
394 | return count; |
395 | } | |
20ad93d4 JD |
396 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
397 | const char *buf, size_t count) | |
1da177e4 | 398 | { |
20ad93d4 JD |
399 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
400 | int nr = sensor_attr->index; | |
401 | ||
1da177e4 LT |
402 | struct i2c_client *client = to_i2c_client(dev); |
403 | struct it87_data *data = i2c_get_clientdata(client); | |
404 | int val = simple_strtol(buf, NULL, 10); | |
405 | ||
9a61bf63 | 406 | mutex_lock(&data->update_lock); |
1da177e4 LT |
407 | data->temp_low[nr] = TEMP_TO_REG(val); |
408 | it87_write_value(client, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); | |
9a61bf63 | 409 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
410 | return count; |
411 | } | |
412 | #define show_temp_offset(offset) \ | |
20ad93d4 JD |
413 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
414 | show_temp, NULL, offset - 1); \ | |
415 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
416 | show_temp_max, set_temp_max, offset - 1); \ | |
417 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
418 | show_temp_min, set_temp_min, offset - 1); | |
1da177e4 LT |
419 | |
420 | show_temp_offset(1); | |
421 | show_temp_offset(2); | |
422 | show_temp_offset(3); | |
423 | ||
20ad93d4 JD |
424 | static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, |
425 | char *buf) | |
1da177e4 | 426 | { |
20ad93d4 JD |
427 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
428 | int nr = sensor_attr->index; | |
429 | ||
1da177e4 LT |
430 | struct it87_data *data = it87_update_device(dev); |
431 | u8 reg = data->sensor; /* In case the value is updated while we use it */ | |
432 | ||
433 | if (reg & (1 << nr)) | |
434 | return sprintf(buf, "3\n"); /* thermal diode */ | |
435 | if (reg & (8 << nr)) | |
436 | return sprintf(buf, "2\n"); /* thermistor */ | |
437 | return sprintf(buf, "0\n"); /* disabled */ | |
438 | } | |
20ad93d4 JD |
439 | static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, |
440 | const char *buf, size_t count) | |
1da177e4 | 441 | { |
20ad93d4 JD |
442 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
443 | int nr = sensor_attr->index; | |
444 | ||
1da177e4 LT |
445 | struct i2c_client *client = to_i2c_client(dev); |
446 | struct it87_data *data = i2c_get_clientdata(client); | |
447 | int val = simple_strtol(buf, NULL, 10); | |
448 | ||
9a61bf63 | 449 | mutex_lock(&data->update_lock); |
1da177e4 LT |
450 | |
451 | data->sensor &= ~(1 << nr); | |
452 | data->sensor &= ~(8 << nr); | |
453 | /* 3 = thermal diode; 2 = thermistor; 0 = disabled */ | |
454 | if (val == 3) | |
455 | data->sensor |= 1 << nr; | |
456 | else if (val == 2) | |
457 | data->sensor |= 8 << nr; | |
458 | else if (val != 0) { | |
9a61bf63 | 459 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
460 | return -EINVAL; |
461 | } | |
462 | it87_write_value(client, IT87_REG_TEMP_ENABLE, data->sensor); | |
9a61bf63 | 463 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
464 | return count; |
465 | } | |
466 | #define show_sensor_offset(offset) \ | |
20ad93d4 JD |
467 | static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ |
468 | show_sensor, set_sensor, offset - 1); | |
1da177e4 LT |
469 | |
470 | show_sensor_offset(1); | |
471 | show_sensor_offset(2); | |
472 | show_sensor_offset(3); | |
473 | ||
474 | /* 3 Fans */ | |
20ad93d4 JD |
475 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
476 | char *buf) | |
1da177e4 | 477 | { |
20ad93d4 JD |
478 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
479 | int nr = sensor_attr->index; | |
480 | ||
1da177e4 LT |
481 | struct it87_data *data = it87_update_device(dev); |
482 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr], | |
483 | DIV_FROM_REG(data->fan_div[nr]))); | |
484 | } | |
20ad93d4 JD |
485 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
486 | char *buf) | |
1da177e4 | 487 | { |
20ad93d4 JD |
488 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
489 | int nr = sensor_attr->index; | |
490 | ||
1da177e4 LT |
491 | struct it87_data *data = it87_update_device(dev); |
492 | return sprintf(buf,"%d\n", | |
493 | FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); | |
494 | } | |
20ad93d4 JD |
495 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
496 | char *buf) | |
1da177e4 | 497 | { |
20ad93d4 JD |
498 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
499 | int nr = sensor_attr->index; | |
500 | ||
1da177e4 LT |
501 | struct it87_data *data = it87_update_device(dev); |
502 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
503 | } | |
20ad93d4 JD |
504 | static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, |
505 | char *buf) | |
1da177e4 | 506 | { |
20ad93d4 JD |
507 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
508 | int nr = sensor_attr->index; | |
509 | ||
1da177e4 LT |
510 | struct it87_data *data = it87_update_device(dev); |
511 | return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0); | |
512 | } | |
20ad93d4 JD |
513 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
514 | char *buf) | |
1da177e4 | 515 | { |
20ad93d4 JD |
516 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
517 | int nr = sensor_attr->index; | |
518 | ||
1da177e4 LT |
519 | struct it87_data *data = it87_update_device(dev); |
520 | return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]); | |
521 | } | |
20ad93d4 JD |
522 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
523 | const char *buf, size_t count) | |
1da177e4 | 524 | { |
20ad93d4 JD |
525 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
526 | int nr = sensor_attr->index; | |
527 | ||
1da177e4 LT |
528 | struct i2c_client *client = to_i2c_client(dev); |
529 | struct it87_data *data = i2c_get_clientdata(client); | |
530 | int val = simple_strtol(buf, NULL, 10); | |
07eab46d | 531 | u8 reg = it87_read_value(client, IT87_REG_FAN_DIV); |
1da177e4 | 532 | |
9a61bf63 | 533 | mutex_lock(&data->update_lock); |
07eab46d JD |
534 | switch (nr) { |
535 | case 0: data->fan_div[nr] = reg & 0x07; break; | |
536 | case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break; | |
537 | case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break; | |
538 | } | |
539 | ||
1da177e4 LT |
540 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
541 | it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 542 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
543 | return count; |
544 | } | |
20ad93d4 JD |
545 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
546 | const char *buf, size_t count) | |
1da177e4 | 547 | { |
20ad93d4 JD |
548 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
549 | int nr = sensor_attr->index; | |
550 | ||
1da177e4 LT |
551 | struct i2c_client *client = to_i2c_client(dev); |
552 | struct it87_data *data = i2c_get_clientdata(client); | |
b9e349f7 | 553 | unsigned long val = simple_strtoul(buf, NULL, 10); |
8ab4ec3e | 554 | int min; |
1da177e4 LT |
555 | u8 old; |
556 | ||
9a61bf63 | 557 | mutex_lock(&data->update_lock); |
1da177e4 LT |
558 | old = it87_read_value(client, IT87_REG_FAN_DIV); |
559 | ||
8ab4ec3e JD |
560 | /* Save fan min limit */ |
561 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); | |
1da177e4 LT |
562 | |
563 | switch (nr) { | |
564 | case 0: | |
565 | case 1: | |
566 | data->fan_div[nr] = DIV_TO_REG(val); | |
567 | break; | |
568 | case 2: | |
569 | if (val < 8) | |
570 | data->fan_div[nr] = 1; | |
571 | else | |
572 | data->fan_div[nr] = 3; | |
573 | } | |
574 | val = old & 0x80; | |
575 | val |= (data->fan_div[0] & 0x07); | |
576 | val |= (data->fan_div[1] & 0x07) << 3; | |
577 | if (data->fan_div[2] == 3) | |
578 | val |= 0x1 << 6; | |
579 | it87_write_value(client, IT87_REG_FAN_DIV, val); | |
580 | ||
8ab4ec3e JD |
581 | /* Restore fan min limit */ |
582 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
583 | it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
584 | ||
9a61bf63 | 585 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
586 | return count; |
587 | } | |
20ad93d4 JD |
588 | static ssize_t set_pwm_enable(struct device *dev, |
589 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 590 | { |
20ad93d4 JD |
591 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
592 | int nr = sensor_attr->index; | |
593 | ||
1da177e4 LT |
594 | struct i2c_client *client = to_i2c_client(dev); |
595 | struct it87_data *data = i2c_get_clientdata(client); | |
596 | int val = simple_strtol(buf, NULL, 10); | |
597 | ||
9a61bf63 | 598 | mutex_lock(&data->update_lock); |
1da177e4 LT |
599 | |
600 | if (val == 0) { | |
601 | int tmp; | |
602 | /* make sure the fan is on when in on/off mode */ | |
603 | tmp = it87_read_value(client, IT87_REG_FAN_CTL); | |
604 | it87_write_value(client, IT87_REG_FAN_CTL, tmp | (1 << nr)); | |
605 | /* set on/off mode */ | |
606 | data->fan_main_ctrl &= ~(1 << nr); | |
607 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
608 | } else if (val == 1) { | |
609 | /* set SmartGuardian mode */ | |
610 | data->fan_main_ctrl |= (1 << nr); | |
611 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
612 | /* set saved pwm value, clear FAN_CTLX PWM mode bit */ | |
613 | it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); | |
614 | } else { | |
9a61bf63 | 615 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
616 | return -EINVAL; |
617 | } | |
618 | ||
9a61bf63 | 619 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
620 | return count; |
621 | } | |
20ad93d4 JD |
622 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
623 | const char *buf, size_t count) | |
1da177e4 | 624 | { |
20ad93d4 JD |
625 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
626 | int nr = sensor_attr->index; | |
627 | ||
1da177e4 LT |
628 | struct i2c_client *client = to_i2c_client(dev); |
629 | struct it87_data *data = i2c_get_clientdata(client); | |
630 | int val = simple_strtol(buf, NULL, 10); | |
631 | ||
632 | if (val < 0 || val > 255) | |
633 | return -EINVAL; | |
634 | ||
9a61bf63 | 635 | mutex_lock(&data->update_lock); |
1da177e4 LT |
636 | data->manual_pwm_ctl[nr] = val; |
637 | if (data->fan_main_ctrl & (1 << nr)) | |
638 | it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); | |
9a61bf63 | 639 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
640 | return count; |
641 | } | |
642 | ||
20ad93d4 JD |
643 | #define show_fan_offset(offset) \ |
644 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
645 | show_fan, NULL, offset - 1); \ | |
646 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
647 | show_fan_min, set_fan_min, offset - 1); \ | |
648 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
649 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
650 | |
651 | show_fan_offset(1); | |
652 | show_fan_offset(2); | |
653 | show_fan_offset(3); | |
654 | ||
655 | #define show_pwm_offset(offset) \ | |
20ad93d4 JD |
656 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
657 | show_pwm_enable, set_pwm_enable, offset - 1); \ | |
658 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ | |
659 | show_pwm, set_pwm, offset - 1); | |
1da177e4 LT |
660 | |
661 | show_pwm_offset(1); | |
662 | show_pwm_offset(2); | |
663 | show_pwm_offset(3); | |
664 | ||
17d648bf JD |
665 | /* A different set of callbacks for 16-bit fans */ |
666 | static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, | |
667 | char *buf) | |
668 | { | |
669 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
670 | int nr = sensor_attr->index; | |
671 | struct it87_data *data = it87_update_device(dev); | |
672 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); | |
673 | } | |
674 | ||
675 | static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, | |
676 | char *buf) | |
677 | { | |
678 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
679 | int nr = sensor_attr->index; | |
680 | struct it87_data *data = it87_update_device(dev); | |
681 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); | |
682 | } | |
683 | ||
684 | static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, | |
685 | const char *buf, size_t count) | |
686 | { | |
687 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
688 | int nr = sensor_attr->index; | |
689 | struct i2c_client *client = to_i2c_client(dev); | |
690 | struct it87_data *data = i2c_get_clientdata(client); | |
691 | int val = simple_strtol(buf, NULL, 10); | |
692 | ||
693 | mutex_lock(&data->update_lock); | |
694 | data->fan_min[nr] = FAN16_TO_REG(val); | |
695 | it87_write_value(client, IT87_REG_FAN_MIN(nr), | |
696 | data->fan_min[nr] & 0xff); | |
697 | it87_write_value(client, IT87_REG_FANX_MIN(nr), | |
698 | data->fan_min[nr] >> 8); | |
699 | mutex_unlock(&data->update_lock); | |
700 | return count; | |
701 | } | |
702 | ||
703 | /* We want to use the same sysfs file names as 8-bit fans, but we need | |
704 | different variable names, so we have to use SENSOR_ATTR instead of | |
705 | SENSOR_DEVICE_ATTR. */ | |
706 | #define show_fan16_offset(offset) \ | |
707 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ | |
708 | = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ | |
709 | show_fan16, NULL, offset - 1); \ | |
710 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ | |
711 | = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
712 | show_fan16_min, set_fan16_min, offset - 1) | |
713 | ||
714 | show_fan16_offset(1); | |
715 | show_fan16_offset(2); | |
716 | show_fan16_offset(3); | |
717 | ||
1da177e4 | 718 | /* Alarms */ |
30f74292 | 719 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
720 | { |
721 | struct it87_data *data = it87_update_device(dev); | |
68188ba7 | 722 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 | 723 | } |
1d66c64c | 724 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4 LT |
725 | |
726 | static ssize_t | |
30f74292 | 727 | show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
728 | { |
729 | struct it87_data *data = it87_update_device(dev); | |
a7be58a1 | 730 | return sprintf(buf, "%u\n", data->vrm); |
1da177e4 LT |
731 | } |
732 | static ssize_t | |
30f74292 | 733 | store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
734 | { |
735 | struct i2c_client *client = to_i2c_client(dev); | |
736 | struct it87_data *data = i2c_get_clientdata(client); | |
737 | u32 val; | |
738 | ||
739 | val = simple_strtoul(buf, NULL, 10); | |
740 | data->vrm = val; | |
741 | ||
742 | return count; | |
743 | } | |
744 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
1da177e4 LT |
745 | |
746 | static ssize_t | |
30f74292 | 747 | show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
748 | { |
749 | struct it87_data *data = it87_update_device(dev); | |
750 | return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); | |
751 | } | |
752 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
87808be4 JD |
753 | |
754 | static struct attribute *it87_attributes[] = { | |
755 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
756 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
757 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
758 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
759 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
760 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
761 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
762 | &sensor_dev_attr_in7_input.dev_attr.attr, | |
763 | &sensor_dev_attr_in8_input.dev_attr.attr, | |
764 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
765 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
766 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
767 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
768 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
769 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
770 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
771 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
772 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
773 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
774 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
775 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
776 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
777 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
778 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
779 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
780 | ||
781 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
782 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
783 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
784 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
785 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
786 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
787 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
788 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
789 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
790 | &sensor_dev_attr_temp1_type.dev_attr.attr, | |
791 | &sensor_dev_attr_temp2_type.dev_attr.attr, | |
792 | &sensor_dev_attr_temp3_type.dev_attr.attr, | |
793 | ||
794 | &dev_attr_alarms.attr, | |
795 | NULL | |
796 | }; | |
797 | ||
798 | static const struct attribute_group it87_group = { | |
799 | .attrs = it87_attributes, | |
800 | }; | |
801 | ||
802 | static struct attribute *it87_attributes_opt[] = { | |
803 | &sensor_dev_attr_fan1_input16.dev_attr.attr, | |
804 | &sensor_dev_attr_fan1_min16.dev_attr.attr, | |
805 | &sensor_dev_attr_fan2_input16.dev_attr.attr, | |
806 | &sensor_dev_attr_fan2_min16.dev_attr.attr, | |
807 | &sensor_dev_attr_fan3_input16.dev_attr.attr, | |
808 | &sensor_dev_attr_fan3_min16.dev_attr.attr, | |
809 | ||
810 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
811 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
812 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
813 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
814 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
815 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
816 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
817 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
818 | &sensor_dev_attr_fan3_div.dev_attr.attr, | |
819 | ||
820 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
821 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
822 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
823 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
824 | &sensor_dev_attr_pwm2.dev_attr.attr, | |
825 | &sensor_dev_attr_pwm3.dev_attr.attr, | |
826 | ||
827 | &dev_attr_vrm.attr, | |
828 | &dev_attr_cpu0_vid.attr, | |
829 | NULL | |
830 | }; | |
831 | ||
832 | static const struct attribute_group it87_group_opt = { | |
833 | .attrs = it87_attributes_opt, | |
834 | }; | |
1da177e4 | 835 | |
2d8672c5 | 836 | /* SuperIO detection - will change isa_address if a chip is found */ |
91749996 | 837 | static int __init it87_find(unsigned short *address) |
1da177e4 LT |
838 | { |
839 | int err = -ENODEV; | |
840 | ||
841 | superio_enter(); | |
842 | chip_type = superio_inw(DEVID); | |
843 | if (chip_type != IT8712F_DEVID | |
17d648bf | 844 | && chip_type != IT8716F_DEVID |
87673dd7 | 845 | && chip_type != IT8718F_DEVID |
1da177e4 LT |
846 | && chip_type != IT8705F_DEVID) |
847 | goto exit; | |
848 | ||
87673dd7 | 849 | superio_select(PME); |
1da177e4 LT |
850 | if (!(superio_inb(IT87_ACT_REG) & 0x01)) { |
851 | pr_info("it87: Device not activated, skipping\n"); | |
852 | goto exit; | |
853 | } | |
854 | ||
855 | *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); | |
856 | if (*address == 0) { | |
857 | pr_info("it87: Base address not set, skipping\n"); | |
858 | goto exit; | |
859 | } | |
860 | ||
861 | err = 0; | |
862 | pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", | |
863 | chip_type, *address, superio_inb(DEVREV) & 0x0f); | |
864 | ||
87673dd7 JD |
865 | /* Read GPIO config and VID value from LDN 7 (GPIO) */ |
866 | if (chip_type != IT8705F_DEVID) { | |
867 | int reg; | |
868 | ||
869 | superio_select(GPIO); | |
870 | if (chip_type == it8718) | |
871 | vid_value = superio_inb(IT87_SIO_VID_REG); | |
872 | ||
873 | reg = superio_inb(IT87_SIO_PINX2_REG); | |
874 | if (reg & (1 << 0)) | |
875 | pr_info("it87: in3 is VCC (+5V)\n"); | |
876 | if (reg & (1 << 1)) | |
877 | pr_info("it87: in7 is VCCH (+5V Stand-By)\n"); | |
878 | } | |
879 | ||
1da177e4 LT |
880 | exit: |
881 | superio_exit(); | |
882 | return err; | |
883 | } | |
884 | ||
2ed2dc3c | 885 | /* This function is called by i2c_probe */ |
8e9afcbb | 886 | static int it87_detect(struct i2c_adapter *adapter) |
1da177e4 | 887 | { |
1da177e4 LT |
888 | struct i2c_client *new_client; |
889 | struct it87_data *data; | |
890 | int err = 0; | |
8e9afcbb | 891 | const char *name; |
1da177e4 LT |
892 | int enable_pwm_interface; |
893 | ||
1da177e4 | 894 | /* Reserve the ISA region */ |
8e9afcbb JD |
895 | if (!request_region(isa_address, IT87_EXTENT, |
896 | it87_isa_driver.driver.name)){ | |
897 | err = -EBUSY; | |
898 | goto ERROR0; | |
899 | } | |
1da177e4 | 900 | |
ba9c2e8d | 901 | if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { |
1da177e4 LT |
902 | err = -ENOMEM; |
903 | goto ERROR1; | |
904 | } | |
1da177e4 LT |
905 | |
906 | new_client = &data->client; | |
8e9afcbb | 907 | mutex_init(&data->lock); |
1da177e4 | 908 | i2c_set_clientdata(new_client, data); |
8e9afcbb | 909 | new_client->addr = isa_address; |
1da177e4 | 910 | new_client->adapter = adapter; |
8e9afcbb | 911 | new_client->driver = &it87_isa_driver; |
1da177e4 LT |
912 | |
913 | /* Now, we do the remaining detection. */ | |
8e9afcbb JD |
914 | if ((it87_read_value(new_client, IT87_REG_CONFIG) & 0x80) |
915 | || it87_read_value(new_client, IT87_REG_CHIPID) != 0x90) { | |
916 | err = -ENODEV; | |
917 | goto ERROR2; | |
1da177e4 LT |
918 | } |
919 | ||
920 | /* Determine the chip type. */ | |
8e9afcbb JD |
921 | switch (chip_type) { |
922 | case IT8712F_DEVID: | |
923 | data->type = it8712; | |
1da177e4 | 924 | name = "it8712"; |
8e9afcbb JD |
925 | break; |
926 | case IT8716F_DEVID: | |
927 | data->type = it8716; | |
17d648bf | 928 | name = "it8716"; |
8e9afcbb JD |
929 | break; |
930 | case IT8718F_DEVID: | |
931 | data->type = it8718; | |
87673dd7 | 932 | name = "it8718"; |
8e9afcbb JD |
933 | break; |
934 | default: | |
935 | data->type = it87; | |
936 | name = "it87"; | |
1da177e4 LT |
937 | } |
938 | ||
939 | /* Fill in the remaining client fields and put it into the global list */ | |
940 | strlcpy(new_client->name, name, I2C_NAME_SIZE); | |
9a61bf63 | 941 | mutex_init(&data->update_lock); |
1da177e4 LT |
942 | |
943 | /* Tell the I2C layer a new client has arrived */ | |
944 | if ((err = i2c_attach_client(new_client))) | |
945 | goto ERROR2; | |
946 | ||
947 | /* Check PWM configuration */ | |
948 | enable_pwm_interface = it87_check_pwm(new_client); | |
949 | ||
950 | /* Initialize the IT87 chip */ | |
951 | it87_init_client(new_client, data); | |
952 | ||
953 | /* Register sysfs hooks */ | |
87808be4 | 954 | if ((err = sysfs_create_group(&new_client->dev.kobj, &it87_group))) |
943b0830 | 955 | goto ERROR3; |
17d648bf | 956 | |
9060f8bd | 957 | /* Do not create fan files for disabled fans */ |
87673dd7 JD |
958 | if (data->type == it8716 || data->type == it8718) { |
959 | /* 16-bit tachometers */ | |
9060f8bd | 960 | if (data->has_fan & (1 << 0)) { |
87808be4 JD |
961 | if ((err = device_create_file(&new_client->dev, |
962 | &sensor_dev_attr_fan1_input16.dev_attr)) | |
963 | || (err = device_create_file(&new_client->dev, | |
964 | &sensor_dev_attr_fan1_min16.dev_attr))) | |
965 | goto ERROR4; | |
9060f8bd JD |
966 | } |
967 | if (data->has_fan & (1 << 1)) { | |
87808be4 JD |
968 | if ((err = device_create_file(&new_client->dev, |
969 | &sensor_dev_attr_fan2_input16.dev_attr)) | |
970 | || (err = device_create_file(&new_client->dev, | |
971 | &sensor_dev_attr_fan2_min16.dev_attr))) | |
972 | goto ERROR4; | |
9060f8bd JD |
973 | } |
974 | if (data->has_fan & (1 << 2)) { | |
87808be4 JD |
975 | if ((err = device_create_file(&new_client->dev, |
976 | &sensor_dev_attr_fan3_input16.dev_attr)) | |
977 | || (err = device_create_file(&new_client->dev, | |
978 | &sensor_dev_attr_fan3_min16.dev_attr))) | |
979 | goto ERROR4; | |
9060f8bd | 980 | } |
17d648bf | 981 | } else { |
87673dd7 | 982 | /* 8-bit tachometers with clock divider */ |
9060f8bd | 983 | if (data->has_fan & (1 << 0)) { |
87808be4 JD |
984 | if ((err = device_create_file(&new_client->dev, |
985 | &sensor_dev_attr_fan1_input.dev_attr)) | |
986 | || (err = device_create_file(&new_client->dev, | |
987 | &sensor_dev_attr_fan1_min.dev_attr)) | |
988 | || (err = device_create_file(&new_client->dev, | |
989 | &sensor_dev_attr_fan1_div.dev_attr))) | |
990 | goto ERROR4; | |
9060f8bd JD |
991 | } |
992 | if (data->has_fan & (1 << 1)) { | |
87808be4 JD |
993 | if ((err = device_create_file(&new_client->dev, |
994 | &sensor_dev_attr_fan2_input.dev_attr)) | |
995 | || (err = device_create_file(&new_client->dev, | |
996 | &sensor_dev_attr_fan2_min.dev_attr)) | |
997 | || (err = device_create_file(&new_client->dev, | |
998 | &sensor_dev_attr_fan2_div.dev_attr))) | |
999 | goto ERROR4; | |
9060f8bd JD |
1000 | } |
1001 | if (data->has_fan & (1 << 2)) { | |
87808be4 JD |
1002 | if ((err = device_create_file(&new_client->dev, |
1003 | &sensor_dev_attr_fan3_input.dev_attr)) | |
1004 | || (err = device_create_file(&new_client->dev, | |
1005 | &sensor_dev_attr_fan3_min.dev_attr)) | |
1006 | || (err = device_create_file(&new_client->dev, | |
1007 | &sensor_dev_attr_fan3_div.dev_attr))) | |
1008 | goto ERROR4; | |
9060f8bd | 1009 | } |
17d648bf JD |
1010 | } |
1011 | ||
1da177e4 | 1012 | if (enable_pwm_interface) { |
87808be4 JD |
1013 | if ((err = device_create_file(&new_client->dev, |
1014 | &sensor_dev_attr_pwm1_enable.dev_attr)) | |
1015 | || (err = device_create_file(&new_client->dev, | |
1016 | &sensor_dev_attr_pwm2_enable.dev_attr)) | |
1017 | || (err = device_create_file(&new_client->dev, | |
1018 | &sensor_dev_attr_pwm3_enable.dev_attr)) | |
1019 | || (err = device_create_file(&new_client->dev, | |
1020 | &sensor_dev_attr_pwm1.dev_attr)) | |
1021 | || (err = device_create_file(&new_client->dev, | |
1022 | &sensor_dev_attr_pwm2.dev_attr)) | |
1023 | || (err = device_create_file(&new_client->dev, | |
1024 | &sensor_dev_attr_pwm3.dev_attr))) | |
1025 | goto ERROR4; | |
1da177e4 LT |
1026 | } |
1027 | ||
87673dd7 JD |
1028 | if (data->type == it8712 || data->type == it8716 |
1029 | || data->type == it8718) { | |
303760b4 | 1030 | data->vrm = vid_which_vrm(); |
87673dd7 JD |
1031 | /* VID reading from Super-I/O config space if available */ |
1032 | data->vid = vid_value; | |
87808be4 JD |
1033 | if ((err = device_create_file(&new_client->dev, |
1034 | &dev_attr_vrm)) | |
1035 | || (err = device_create_file(&new_client->dev, | |
1036 | &dev_attr_cpu0_vid))) | |
1037 | goto ERROR4; | |
1038 | } | |
1039 | ||
1040 | data->class_dev = hwmon_device_register(&new_client->dev); | |
1041 | if (IS_ERR(data->class_dev)) { | |
1042 | err = PTR_ERR(data->class_dev); | |
1043 | goto ERROR4; | |
1da177e4 LT |
1044 | } |
1045 | ||
1046 | return 0; | |
1047 | ||
87808be4 JD |
1048 | ERROR4: |
1049 | sysfs_remove_group(&new_client->dev.kobj, &it87_group); | |
1050 | sysfs_remove_group(&new_client->dev.kobj, &it87_group_opt); | |
943b0830 MH |
1051 | ERROR3: |
1052 | i2c_detach_client(new_client); | |
1da177e4 LT |
1053 | ERROR2: |
1054 | kfree(data); | |
1055 | ERROR1: | |
8e9afcbb | 1056 | release_region(isa_address, IT87_EXTENT); |
1da177e4 LT |
1057 | ERROR0: |
1058 | return err; | |
1059 | } | |
1060 | ||
1061 | static int it87_detach_client(struct i2c_client *client) | |
1062 | { | |
943b0830 | 1063 | struct it87_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
1064 | int err; |
1065 | ||
943b0830 | 1066 | hwmon_device_unregister(data->class_dev); |
87808be4 JD |
1067 | sysfs_remove_group(&client->dev.kobj, &it87_group); |
1068 | sysfs_remove_group(&client->dev.kobj, &it87_group_opt); | |
943b0830 | 1069 | |
7bef5594 | 1070 | if ((err = i2c_detach_client(client))) |
1da177e4 | 1071 | return err; |
1da177e4 | 1072 | |
8e9afcbb | 1073 | release_region(client->addr, IT87_EXTENT); |
943b0830 | 1074 | kfree(data); |
1da177e4 LT |
1075 | |
1076 | return 0; | |
1077 | } | |
1078 | ||
8e9afcbb | 1079 | /* ISA access must be locked explicitly! |
1da177e4 LT |
1080 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1081 | would slow down the IT87 access and should not be necessary. */ | |
1082 | static int it87_read_value(struct i2c_client *client, u8 reg) | |
1083 | { | |
1084 | struct it87_data *data = i2c_get_clientdata(client); | |
1da177e4 | 1085 | int res; |
8e9afcbb JD |
1086 | |
1087 | mutex_lock(&data->lock); | |
1088 | outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); | |
1089 | res = inb_p(client->addr + IT87_DATA_REG_OFFSET); | |
1090 | mutex_unlock(&data->lock); | |
1091 | ||
1092 | return res; | |
1da177e4 LT |
1093 | } |
1094 | ||
8e9afcbb | 1095 | /* ISA access must be locked explicitly! |
1da177e4 LT |
1096 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1097 | would slow down the IT87 access and should not be necessary. */ | |
8e9afcbb | 1098 | static void it87_write_value(struct i2c_client *client, u8 reg, u8 value) |
1da177e4 LT |
1099 | { |
1100 | struct it87_data *data = i2c_get_clientdata(client); | |
1101 | ||
8e9afcbb JD |
1102 | mutex_lock(&data->lock); |
1103 | outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); | |
1104 | outb_p(value, client->addr + IT87_DATA_REG_OFFSET); | |
1105 | mutex_unlock(&data->lock); | |
1da177e4 LT |
1106 | } |
1107 | ||
1108 | /* Return 1 if and only if the PWM interface is safe to use */ | |
1109 | static int it87_check_pwm(struct i2c_client *client) | |
1110 | { | |
1111 | /* Some BIOSes fail to correctly configure the IT87 fans. All fans off | |
1112 | * and polarity set to active low is sign that this is the case so we | |
1113 | * disable pwm control to protect the user. */ | |
1114 | int tmp = it87_read_value(client, IT87_REG_FAN_CTL); | |
1115 | if ((tmp & 0x87) == 0) { | |
1116 | if (fix_pwm_polarity) { | |
1117 | /* The user asks us to attempt a chip reconfiguration. | |
1118 | * This means switching to active high polarity and | |
1119 | * inverting all fan speed values. */ | |
1120 | int i; | |
1121 | u8 pwm[3]; | |
1122 | ||
1123 | for (i = 0; i < 3; i++) | |
1124 | pwm[i] = it87_read_value(client, | |
1125 | IT87_REG_PWM(i)); | |
1126 | ||
1127 | /* If any fan is in automatic pwm mode, the polarity | |
1128 | * might be correct, as suspicious as it seems, so we | |
1129 | * better don't change anything (but still disable the | |
1130 | * PWM interface). */ | |
1131 | if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { | |
1132 | dev_info(&client->dev, "Reconfiguring PWM to " | |
1133 | "active high polarity\n"); | |
1134 | it87_write_value(client, IT87_REG_FAN_CTL, | |
1135 | tmp | 0x87); | |
1136 | for (i = 0; i < 3; i++) | |
1137 | it87_write_value(client, | |
1138 | IT87_REG_PWM(i), | |
1139 | 0x7f & ~pwm[i]); | |
1140 | return 1; | |
1141 | } | |
1142 | ||
1143 | dev_info(&client->dev, "PWM configuration is " | |
1144 | "too broken to be fixed\n"); | |
1145 | } | |
1146 | ||
1147 | dev_info(&client->dev, "Detected broken BIOS " | |
1148 | "defaults, disabling PWM interface\n"); | |
1149 | return 0; | |
1150 | } else if (fix_pwm_polarity) { | |
1151 | dev_info(&client->dev, "PWM configuration looks " | |
1152 | "sane, won't touch\n"); | |
1153 | } | |
1154 | ||
1155 | return 1; | |
1156 | } | |
1157 | ||
1158 | /* Called when we have found a new IT87. */ | |
1159 | static void it87_init_client(struct i2c_client *client, struct it87_data *data) | |
1160 | { | |
1161 | int tmp, i; | |
1162 | ||
1163 | /* initialize to sane defaults: | |
1164 | * - if the chip is in manual pwm mode, this will be overwritten with | |
1165 | * the actual settings on the chip (so in this case, initialization | |
1166 | * is not needed) | |
1167 | * - if in automatic or on/off mode, we could switch to manual mode, | |
1168 | * read the registers and set manual_pwm_ctl accordingly, but currently | |
1169 | * this is not implemented, so we initialize to something sane */ | |
1170 | for (i = 0; i < 3; i++) { | |
1171 | data->manual_pwm_ctl[i] = 0xff; | |
1172 | } | |
1173 | ||
c5df9b7a JD |
1174 | /* Some chips seem to have default value 0xff for all limit |
1175 | * registers. For low voltage limits it makes no sense and triggers | |
1176 | * alarms, so change to 0 instead. For high temperature limits, it | |
1177 | * means -1 degree C, which surprisingly doesn't trigger an alarm, | |
1178 | * but is still confusing, so change to 127 degrees C. */ | |
1179 | for (i = 0; i < 8; i++) { | |
1180 | tmp = it87_read_value(client, IT87_REG_VIN_MIN(i)); | |
1181 | if (tmp == 0xff) | |
1182 | it87_write_value(client, IT87_REG_VIN_MIN(i), 0); | |
1183 | } | |
1184 | for (i = 0; i < 3; i++) { | |
1185 | tmp = it87_read_value(client, IT87_REG_TEMP_HIGH(i)); | |
1186 | if (tmp == 0xff) | |
1187 | it87_write_value(client, IT87_REG_TEMP_HIGH(i), 127); | |
1188 | } | |
1189 | ||
1da177e4 LT |
1190 | /* Check if temperature channnels are reset manually or by some reason */ |
1191 | tmp = it87_read_value(client, IT87_REG_TEMP_ENABLE); | |
1192 | if ((tmp & 0x3f) == 0) { | |
1193 | /* Temp1,Temp3=thermistor; Temp2=thermal diode */ | |
1194 | tmp = (tmp & 0xc0) | 0x2a; | |
1195 | it87_write_value(client, IT87_REG_TEMP_ENABLE, tmp); | |
1196 | } | |
1197 | data->sensor = tmp; | |
1198 | ||
1199 | /* Check if voltage monitors are reset manually or by some reason */ | |
1200 | tmp = it87_read_value(client, IT87_REG_VIN_ENABLE); | |
1201 | if ((tmp & 0xff) == 0) { | |
1202 | /* Enable all voltage monitors */ | |
1203 | it87_write_value(client, IT87_REG_VIN_ENABLE, 0xff); | |
1204 | } | |
1205 | ||
1206 | /* Check if tachometers are reset manually or by some reason */ | |
1207 | data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL); | |
1208 | if ((data->fan_main_ctrl & 0x70) == 0) { | |
1209 | /* Enable all fan tachometers */ | |
1210 | data->fan_main_ctrl |= 0x70; | |
1211 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
1212 | } | |
9060f8bd | 1213 | data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; |
1da177e4 | 1214 | |
17d648bf | 1215 | /* Set tachometers to 16-bit mode if needed */ |
87673dd7 | 1216 | if (data->type == it8716 || data->type == it8718) { |
17d648bf | 1217 | tmp = it87_read_value(client, IT87_REG_FAN_16BIT); |
9060f8bd | 1218 | if (~tmp & 0x07 & data->has_fan) { |
17d648bf JD |
1219 | dev_dbg(&client->dev, |
1220 | "Setting fan1-3 to 16-bit mode\n"); | |
1221 | it87_write_value(client, IT87_REG_FAN_16BIT, | |
1222 | tmp | 0x07); | |
1223 | } | |
1224 | } | |
1225 | ||
1da177e4 LT |
1226 | /* Set current fan mode registers and the default settings for the |
1227 | * other mode registers */ | |
1228 | for (i = 0; i < 3; i++) { | |
1229 | if (data->fan_main_ctrl & (1 << i)) { | |
1230 | /* pwm mode */ | |
1231 | tmp = it87_read_value(client, IT87_REG_PWM(i)); | |
1232 | if (tmp & 0x80) { | |
1233 | /* automatic pwm - not yet implemented, but | |
1234 | * leave the settings made by the BIOS alone | |
1235 | * until a change is requested via the sysfs | |
1236 | * interface */ | |
1237 | } else { | |
1238 | /* manual pwm */ | |
1239 | data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp); | |
1240 | } | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | /* Start monitoring */ | |
1245 | it87_write_value(client, IT87_REG_CONFIG, | |
1246 | (it87_read_value(client, IT87_REG_CONFIG) & 0x36) | |
1247 | | (update_vbat ? 0x41 : 0x01)); | |
1248 | } | |
1249 | ||
1250 | static struct it87_data *it87_update_device(struct device *dev) | |
1251 | { | |
1252 | struct i2c_client *client = to_i2c_client(dev); | |
1253 | struct it87_data *data = i2c_get_clientdata(client); | |
1254 | int i; | |
1255 | ||
9a61bf63 | 1256 | mutex_lock(&data->update_lock); |
1da177e4 LT |
1257 | |
1258 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
1259 | || !data->valid) { | |
1260 | ||
1261 | if (update_vbat) { | |
1262 | /* Cleared after each update, so reenable. Value | |
1263 | returned by this read will be previous value */ | |
1264 | it87_write_value(client, IT87_REG_CONFIG, | |
1265 | it87_read_value(client, IT87_REG_CONFIG) | 0x40); | |
1266 | } | |
1267 | for (i = 0; i <= 7; i++) { | |
1268 | data->in[i] = | |
1269 | it87_read_value(client, IT87_REG_VIN(i)); | |
1270 | data->in_min[i] = | |
1271 | it87_read_value(client, IT87_REG_VIN_MIN(i)); | |
1272 | data->in_max[i] = | |
1273 | it87_read_value(client, IT87_REG_VIN_MAX(i)); | |
1274 | } | |
3543a53f | 1275 | /* in8 (battery) has no limit registers */ |
1da177e4 LT |
1276 | data->in[8] = |
1277 | it87_read_value(client, IT87_REG_VIN(8)); | |
1da177e4 LT |
1278 | |
1279 | for (i = 0; i < 3; i++) { | |
9060f8bd JD |
1280 | /* Skip disabled fans */ |
1281 | if (!(data->has_fan & (1 << i))) | |
1282 | continue; | |
1283 | ||
1da177e4 LT |
1284 | data->fan_min[i] = |
1285 | it87_read_value(client, IT87_REG_FAN_MIN(i)); | |
17d648bf JD |
1286 | data->fan[i] = it87_read_value(client, |
1287 | IT87_REG_FAN(i)); | |
1288 | /* Add high byte if in 16-bit mode */ | |
87673dd7 | 1289 | if (data->type == it8716 || data->type == it8718) { |
17d648bf JD |
1290 | data->fan[i] |= it87_read_value(client, |
1291 | IT87_REG_FANX(i)) << 8; | |
1292 | data->fan_min[i] |= it87_read_value(client, | |
1293 | IT87_REG_FANX_MIN(i)) << 8; | |
1294 | } | |
1da177e4 LT |
1295 | } |
1296 | for (i = 0; i < 3; i++) { | |
1297 | data->temp[i] = | |
1298 | it87_read_value(client, IT87_REG_TEMP(i)); | |
1299 | data->temp_high[i] = | |
1300 | it87_read_value(client, IT87_REG_TEMP_HIGH(i)); | |
1301 | data->temp_low[i] = | |
1302 | it87_read_value(client, IT87_REG_TEMP_LOW(i)); | |
1303 | } | |
1304 | ||
17d648bf | 1305 | /* Newer chips don't have clock dividers */ |
87673dd7 JD |
1306 | if ((data->has_fan & 0x07) && data->type != it8716 |
1307 | && data->type != it8718) { | |
17d648bf JD |
1308 | i = it87_read_value(client, IT87_REG_FAN_DIV); |
1309 | data->fan_div[0] = i & 0x07; | |
1310 | data->fan_div[1] = (i >> 3) & 0x07; | |
1311 | data->fan_div[2] = (i & 0x40) ? 3 : 1; | |
1312 | } | |
1da177e4 LT |
1313 | |
1314 | data->alarms = | |
1315 | it87_read_value(client, IT87_REG_ALARM1) | | |
1316 | (it87_read_value(client, IT87_REG_ALARM2) << 8) | | |
1317 | (it87_read_value(client, IT87_REG_ALARM3) << 16); | |
1318 | data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL); | |
1319 | ||
1320 | data->sensor = it87_read_value(client, IT87_REG_TEMP_ENABLE); | |
1321 | /* The 8705 does not have VID capability */ | |
17d648bf | 1322 | if (data->type == it8712 || data->type == it8716) { |
1da177e4 | 1323 | data->vid = it87_read_value(client, IT87_REG_VID); |
17d648bf JD |
1324 | /* The older IT8712F revisions had only 5 VID pins, |
1325 | but we assume it is always safe to read 6 bits. */ | |
1326 | data->vid &= 0x3f; | |
1da177e4 LT |
1327 | } |
1328 | data->last_updated = jiffies; | |
1329 | data->valid = 1; | |
1330 | } | |
1331 | ||
9a61bf63 | 1332 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1333 | |
1334 | return data; | |
1335 | } | |
1336 | ||
1337 | static int __init sm_it87_init(void) | |
1338 | { | |
91749996 | 1339 | int res; |
fde09509 | 1340 | |
8e9afcbb | 1341 | if ((res = it87_find(&isa_address))) |
fde09509 | 1342 | return res; |
8e9afcbb | 1343 | return i2c_isa_add_driver(&it87_isa_driver); |
1da177e4 LT |
1344 | } |
1345 | ||
1346 | static void __exit sm_it87_exit(void) | |
1347 | { | |
8e9afcbb | 1348 | i2c_isa_del_driver(&it87_isa_driver); |
1da177e4 LT |
1349 | } |
1350 | ||
1351 | ||
b19367c6 JD |
1352 | MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>, " |
1353 | "Jean Delvare <khali@linux-fr.org>"); | |
87673dd7 | 1354 | MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F, SiS950 driver"); |
1da177e4 LT |
1355 | module_param(update_vbat, bool, 0); |
1356 | MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); | |
1357 | module_param(fix_pwm_polarity, bool, 0); | |
1358 | MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)"); | |
1359 | MODULE_LICENSE("GPL"); | |
1360 | ||
1361 | module_init(sm_it87_init); | |
1362 | module_exit(sm_it87_exit); |