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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 |
1da177e4 | 6 | IT8712F Super I/O chip w/LPC interface & SMBus |
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> |
1da177e4 LT |
40 | #include <asm/io.h> |
41 | ||
42 | ||
43 | /* Addresses to scan */ | |
c5e3fbf2 | 44 | static unsigned short normal_i2c[] = { 0x2d, I2C_CLIENT_END }; |
91749996 | 45 | static unsigned short isa_address; |
1da177e4 LT |
46 | |
47 | /* Insmod parameters */ | |
87673dd7 | 48 | I2C_CLIENT_INSMOD_4(it87, it8712, it8716, it8718); |
1da177e4 LT |
49 | |
50 | #define REG 0x2e /* The register to read/write */ | |
51 | #define DEV 0x07 /* Register: Logical device select */ | |
52 | #define VAL 0x2f /* The value to read/write */ | |
53 | #define PME 0x04 /* The device with the fan registers in it */ | |
87673dd7 | 54 | #define GPIO 0x07 /* The device with the IT8718F VID value in it */ |
1da177e4 LT |
55 | #define DEVID 0x20 /* Register: Device ID */ |
56 | #define DEVREV 0x22 /* Register: Device Revision */ | |
57 | ||
58 | static inline int | |
59 | superio_inb(int reg) | |
60 | { | |
61 | outb(reg, REG); | |
62 | return inb(VAL); | |
63 | } | |
64 | ||
65 | static int superio_inw(int reg) | |
66 | { | |
67 | int val; | |
68 | outb(reg++, REG); | |
69 | val = inb(VAL) << 8; | |
70 | outb(reg, REG); | |
71 | val |= inb(VAL); | |
72 | return val; | |
73 | } | |
74 | ||
75 | static inline void | |
87673dd7 | 76 | superio_select(int ldn) |
1da177e4 LT |
77 | { |
78 | outb(DEV, REG); | |
87673dd7 | 79 | outb(ldn, VAL); |
1da177e4 LT |
80 | } |
81 | ||
82 | static inline void | |
83 | superio_enter(void) | |
84 | { | |
85 | outb(0x87, REG); | |
86 | outb(0x01, REG); | |
87 | outb(0x55, REG); | |
88 | outb(0x55, REG); | |
89 | } | |
90 | ||
91 | static inline void | |
92 | superio_exit(void) | |
93 | { | |
94 | outb(0x02, REG); | |
95 | outb(0x02, VAL); | |
96 | } | |
97 | ||
87673dd7 | 98 | /* Logical device 4 registers */ |
1da177e4 LT |
99 | #define IT8712F_DEVID 0x8712 |
100 | #define IT8705F_DEVID 0x8705 | |
17d648bf | 101 | #define IT8716F_DEVID 0x8716 |
87673dd7 | 102 | #define IT8718F_DEVID 0x8718 |
1da177e4 LT |
103 | #define IT87_ACT_REG 0x30 |
104 | #define IT87_BASE_REG 0x60 | |
105 | ||
87673dd7 JD |
106 | /* Logical device 7 registers (IT8712F and later) */ |
107 | #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ | |
108 | #define IT87_SIO_VID_REG 0xfc /* VID value */ | |
109 | ||
1da177e4 LT |
110 | /* Update battery voltage after every reading if true */ |
111 | static int update_vbat; | |
112 | ||
113 | /* Not all BIOSes properly configure the PWM registers */ | |
114 | static int fix_pwm_polarity; | |
115 | ||
87673dd7 | 116 | /* Values read from Super-I/O config space */ |
1da177e4 | 117 | static u16 chip_type; |
87673dd7 | 118 | static u8 vid_value; |
1da177e4 LT |
119 | |
120 | /* Many IT87 constants specified below */ | |
121 | ||
122 | /* Length of ISA address segment */ | |
123 | #define IT87_EXTENT 8 | |
124 | ||
125 | /* Where are the ISA address/data registers relative to the base address */ | |
126 | #define IT87_ADDR_REG_OFFSET 5 | |
127 | #define IT87_DATA_REG_OFFSET 6 | |
128 | ||
129 | /*----- The IT87 registers -----*/ | |
130 | ||
131 | #define IT87_REG_CONFIG 0x00 | |
132 | ||
133 | #define IT87_REG_ALARM1 0x01 | |
134 | #define IT87_REG_ALARM2 0x02 | |
135 | #define IT87_REG_ALARM3 0x03 | |
136 | ||
87673dd7 JD |
137 | /* The IT8718F has the VID value in a different register, in Super-I/O |
138 | configuration space. */ | |
1da177e4 | 139 | #define IT87_REG_VID 0x0a |
17d648bf JD |
140 | /* Warning: register 0x0b is used for something completely different in |
141 | new chips/revisions. I suspect only 16-bit tachometer mode will work | |
142 | for these. */ | |
1da177e4 | 143 | #define IT87_REG_FAN_DIV 0x0b |
17d648bf | 144 | #define IT87_REG_FAN_16BIT 0x0c |
1da177e4 LT |
145 | |
146 | /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ | |
147 | ||
148 | #define IT87_REG_FAN(nr) (0x0d + (nr)) | |
149 | #define IT87_REG_FAN_MIN(nr) (0x10 + (nr)) | |
17d648bf JD |
150 | #define IT87_REG_FANX(nr) (0x18 + (nr)) |
151 | #define IT87_REG_FANX_MIN(nr) (0x1b + (nr)) | |
1da177e4 LT |
152 | #define IT87_REG_FAN_MAIN_CTRL 0x13 |
153 | #define IT87_REG_FAN_CTL 0x14 | |
154 | #define IT87_REG_PWM(nr) (0x15 + (nr)) | |
155 | ||
156 | #define IT87_REG_VIN(nr) (0x20 + (nr)) | |
157 | #define IT87_REG_TEMP(nr) (0x29 + (nr)) | |
158 | ||
159 | #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) | |
160 | #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) | |
161 | #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) | |
162 | #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) | |
163 | ||
164 | #define IT87_REG_I2C_ADDR 0x48 | |
165 | ||
166 | #define IT87_REG_VIN_ENABLE 0x50 | |
167 | #define IT87_REG_TEMP_ENABLE 0x51 | |
168 | ||
169 | #define IT87_REG_CHIPID 0x58 | |
170 | ||
171 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255)) | |
172 | #define IN_FROM_REG(val) ((val) * 16) | |
173 | ||
174 | static inline u8 FAN_TO_REG(long rpm, int div) | |
175 | { | |
176 | if (rpm == 0) | |
177 | return 255; | |
178 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
179 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, | |
180 | 254); | |
181 | } | |
182 | ||
17d648bf JD |
183 | static inline u16 FAN16_TO_REG(long rpm) |
184 | { | |
185 | if (rpm == 0) | |
186 | return 0xffff; | |
187 | return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); | |
188 | } | |
189 | ||
1da177e4 | 190 | #define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div))) |
17d648bf JD |
191 | /* The divider is fixed to 2 in 16-bit mode */ |
192 | #define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2)) | |
1da177e4 LT |
193 | |
194 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\ | |
195 | ((val)+500)/1000),-128,127)) | |
196 | #define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000) | |
197 | ||
1da177e4 LT |
198 | #define PWM_TO_REG(val) ((val) >> 1) |
199 | #define PWM_FROM_REG(val) (((val)&0x7f) << 1) | |
200 | ||
201 | static int DIV_TO_REG(int val) | |
202 | { | |
203 | int answer = 0; | |
b9e349f7 | 204 | while (answer < 7 && (val >>= 1)) |
1da177e4 LT |
205 | answer++; |
206 | return answer; | |
207 | } | |
208 | #define DIV_FROM_REG(val) (1 << (val)) | |
209 | ||
210 | ||
211 | /* For each registered IT87, we need to keep some data in memory. That | |
212 | data is pointed to by it87_list[NR]->data. The structure itself is | |
213 | dynamically allocated, at the same time when a new it87 client is | |
214 | allocated. */ | |
215 | struct it87_data { | |
216 | struct i2c_client client; | |
943b0830 | 217 | struct class_device *class_dev; |
9a61bf63 | 218 | struct mutex lock; |
1da177e4 LT |
219 | enum chips type; |
220 | ||
9a61bf63 | 221 | struct mutex update_lock; |
1da177e4 LT |
222 | char valid; /* !=0 if following fields are valid */ |
223 | unsigned long last_updated; /* In jiffies */ | |
224 | ||
225 | u8 in[9]; /* Register value */ | |
3543a53f JD |
226 | u8 in_max[8]; /* Register value */ |
227 | u8 in_min[8]; /* Register value */ | |
9060f8bd | 228 | u8 has_fan; /* Bitfield, fans enabled */ |
17d648bf JD |
229 | u16 fan[3]; /* Register values, possibly combined */ |
230 | u16 fan_min[3]; /* Register values, possibly combined */ | |
1da177e4 LT |
231 | u8 temp[3]; /* Register value */ |
232 | u8 temp_high[3]; /* Register value */ | |
233 | u8 temp_low[3]; /* Register value */ | |
234 | u8 sensor; /* Register value */ | |
235 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
236 | u8 vid; /* Register encoding, combined */ | |
a7be58a1 | 237 | u8 vrm; |
1da177e4 LT |
238 | u32 alarms; /* Register encoding, combined */ |
239 | u8 fan_main_ctrl; /* Register value */ | |
240 | u8 manual_pwm_ctl[3]; /* manual PWM value set by user */ | |
241 | }; | |
242 | ||
243 | ||
244 | static int it87_attach_adapter(struct i2c_adapter *adapter); | |
2d8672c5 | 245 | static int it87_isa_attach_adapter(struct i2c_adapter *adapter); |
1da177e4 LT |
246 | static int it87_detect(struct i2c_adapter *adapter, int address, int kind); |
247 | static int it87_detach_client(struct i2c_client *client); | |
248 | ||
f6c27fc1 DJ |
249 | static int it87_read_value(struct i2c_client *client, u8 reg); |
250 | static int it87_write_value(struct i2c_client *client, u8 reg, u8 value); | |
1da177e4 LT |
251 | static struct it87_data *it87_update_device(struct device *dev); |
252 | static int it87_check_pwm(struct i2c_client *client); | |
253 | static void it87_init_client(struct i2c_client *client, struct it87_data *data); | |
254 | ||
255 | ||
256 | static struct i2c_driver it87_driver = { | |
cdaf7934 | 257 | .driver = { |
cdaf7934 LR |
258 | .name = "it87", |
259 | }, | |
1da177e4 | 260 | .id = I2C_DRIVERID_IT87, |
1da177e4 LT |
261 | .attach_adapter = it87_attach_adapter, |
262 | .detach_client = it87_detach_client, | |
263 | }; | |
264 | ||
fde09509 | 265 | static struct i2c_driver it87_isa_driver = { |
cdaf7934 | 266 | .driver = { |
87218842 | 267 | .owner = THIS_MODULE, |
cdaf7934 LR |
268 | .name = "it87-isa", |
269 | }, | |
2d8672c5 | 270 | .attach_adapter = it87_isa_attach_adapter, |
fde09509 JD |
271 | .detach_client = it87_detach_client, |
272 | }; | |
273 | ||
274 | ||
20ad93d4 JD |
275 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
276 | char *buf) | |
1da177e4 | 277 | { |
20ad93d4 JD |
278 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
279 | int nr = sensor_attr->index; | |
280 | ||
1da177e4 LT |
281 | struct it87_data *data = it87_update_device(dev); |
282 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); | |
283 | } | |
284 | ||
20ad93d4 JD |
285 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, |
286 | char *buf) | |
1da177e4 | 287 | { |
20ad93d4 JD |
288 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
289 | int nr = sensor_attr->index; | |
290 | ||
1da177e4 LT |
291 | struct it87_data *data = it87_update_device(dev); |
292 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); | |
293 | } | |
294 | ||
20ad93d4 JD |
295 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, |
296 | char *buf) | |
1da177e4 | 297 | { |
20ad93d4 JD |
298 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
299 | int nr = sensor_attr->index; | |
300 | ||
1da177e4 LT |
301 | struct it87_data *data = it87_update_device(dev); |
302 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); | |
303 | } | |
304 | ||
20ad93d4 JD |
305 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
306 | const char *buf, size_t count) | |
1da177e4 | 307 | { |
20ad93d4 JD |
308 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
309 | int nr = sensor_attr->index; | |
310 | ||
1da177e4 LT |
311 | struct i2c_client *client = to_i2c_client(dev); |
312 | struct it87_data *data = i2c_get_clientdata(client); | |
313 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
314 | ||
9a61bf63 | 315 | mutex_lock(&data->update_lock); |
1da177e4 LT |
316 | data->in_min[nr] = IN_TO_REG(val); |
317 | it87_write_value(client, IT87_REG_VIN_MIN(nr), | |
318 | data->in_min[nr]); | |
9a61bf63 | 319 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
320 | return count; |
321 | } | |
20ad93d4 JD |
322 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
323 | const char *buf, size_t count) | |
1da177e4 | 324 | { |
20ad93d4 JD |
325 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
326 | int nr = sensor_attr->index; | |
327 | ||
1da177e4 LT |
328 | struct i2c_client *client = to_i2c_client(dev); |
329 | struct it87_data *data = i2c_get_clientdata(client); | |
330 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
331 | ||
9a61bf63 | 332 | mutex_lock(&data->update_lock); |
1da177e4 LT |
333 | data->in_max[nr] = IN_TO_REG(val); |
334 | it87_write_value(client, IT87_REG_VIN_MAX(nr), | |
335 | data->in_max[nr]); | |
9a61bf63 | 336 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
337 | return count; |
338 | } | |
339 | ||
340 | #define show_in_offset(offset) \ | |
20ad93d4 JD |
341 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
342 | show_in, NULL, offset); | |
1da177e4 LT |
343 | |
344 | #define limit_in_offset(offset) \ | |
20ad93d4 JD |
345 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
346 | show_in_min, set_in_min, offset); \ | |
347 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
348 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
349 | |
350 | show_in_offset(0); | |
351 | limit_in_offset(0); | |
352 | show_in_offset(1); | |
353 | limit_in_offset(1); | |
354 | show_in_offset(2); | |
355 | limit_in_offset(2); | |
356 | show_in_offset(3); | |
357 | limit_in_offset(3); | |
358 | show_in_offset(4); | |
359 | limit_in_offset(4); | |
360 | show_in_offset(5); | |
361 | limit_in_offset(5); | |
362 | show_in_offset(6); | |
363 | limit_in_offset(6); | |
364 | show_in_offset(7); | |
365 | limit_in_offset(7); | |
366 | show_in_offset(8); | |
367 | ||
368 | /* 3 temperatures */ | |
20ad93d4 JD |
369 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
370 | char *buf) | |
1da177e4 | 371 | { |
20ad93d4 JD |
372 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
373 | int nr = sensor_attr->index; | |
374 | ||
1da177e4 LT |
375 | struct it87_data *data = it87_update_device(dev); |
376 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
377 | } | |
20ad93d4 JD |
378 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, |
379 | char *buf) | |
1da177e4 | 380 | { |
20ad93d4 JD |
381 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
382 | int nr = sensor_attr->index; | |
383 | ||
1da177e4 LT |
384 | struct it87_data *data = it87_update_device(dev); |
385 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); | |
386 | } | |
20ad93d4 JD |
387 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
388 | char *buf) | |
1da177e4 | 389 | { |
20ad93d4 JD |
390 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
391 | int nr = sensor_attr->index; | |
392 | ||
1da177e4 LT |
393 | struct it87_data *data = it87_update_device(dev); |
394 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); | |
395 | } | |
20ad93d4 JD |
396 | static ssize_t set_temp_max(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_high[nr] = TEMP_TO_REG(val); |
408 | it87_write_value(client, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); | |
9a61bf63 | 409 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
410 | return count; |
411 | } | |
20ad93d4 JD |
412 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
413 | const char *buf, size_t count) | |
1da177e4 | 414 | { |
20ad93d4 JD |
415 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
416 | int nr = sensor_attr->index; | |
417 | ||
1da177e4 LT |
418 | struct i2c_client *client = to_i2c_client(dev); |
419 | struct it87_data *data = i2c_get_clientdata(client); | |
420 | int val = simple_strtol(buf, NULL, 10); | |
421 | ||
9a61bf63 | 422 | mutex_lock(&data->update_lock); |
1da177e4 LT |
423 | data->temp_low[nr] = TEMP_TO_REG(val); |
424 | it87_write_value(client, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); | |
9a61bf63 | 425 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
426 | return count; |
427 | } | |
428 | #define show_temp_offset(offset) \ | |
20ad93d4 JD |
429 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
430 | show_temp, NULL, offset - 1); \ | |
431 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
432 | show_temp_max, set_temp_max, offset - 1); \ | |
433 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
434 | show_temp_min, set_temp_min, offset - 1); | |
1da177e4 LT |
435 | |
436 | show_temp_offset(1); | |
437 | show_temp_offset(2); | |
438 | show_temp_offset(3); | |
439 | ||
20ad93d4 JD |
440 | static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, |
441 | char *buf) | |
1da177e4 | 442 | { |
20ad93d4 JD |
443 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
444 | int nr = sensor_attr->index; | |
445 | ||
1da177e4 LT |
446 | struct it87_data *data = it87_update_device(dev); |
447 | u8 reg = data->sensor; /* In case the value is updated while we use it */ | |
448 | ||
449 | if (reg & (1 << nr)) | |
450 | return sprintf(buf, "3\n"); /* thermal diode */ | |
451 | if (reg & (8 << nr)) | |
452 | return sprintf(buf, "2\n"); /* thermistor */ | |
453 | return sprintf(buf, "0\n"); /* disabled */ | |
454 | } | |
20ad93d4 JD |
455 | static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, |
456 | const char *buf, size_t count) | |
1da177e4 | 457 | { |
20ad93d4 JD |
458 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
459 | int nr = sensor_attr->index; | |
460 | ||
1da177e4 LT |
461 | struct i2c_client *client = to_i2c_client(dev); |
462 | struct it87_data *data = i2c_get_clientdata(client); | |
463 | int val = simple_strtol(buf, NULL, 10); | |
464 | ||
9a61bf63 | 465 | mutex_lock(&data->update_lock); |
1da177e4 LT |
466 | |
467 | data->sensor &= ~(1 << nr); | |
468 | data->sensor &= ~(8 << nr); | |
469 | /* 3 = thermal diode; 2 = thermistor; 0 = disabled */ | |
470 | if (val == 3) | |
471 | data->sensor |= 1 << nr; | |
472 | else if (val == 2) | |
473 | data->sensor |= 8 << nr; | |
474 | else if (val != 0) { | |
9a61bf63 | 475 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
476 | return -EINVAL; |
477 | } | |
478 | it87_write_value(client, IT87_REG_TEMP_ENABLE, data->sensor); | |
9a61bf63 | 479 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
480 | return count; |
481 | } | |
482 | #define show_sensor_offset(offset) \ | |
20ad93d4 JD |
483 | static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ |
484 | show_sensor, set_sensor, offset - 1); | |
1da177e4 LT |
485 | |
486 | show_sensor_offset(1); | |
487 | show_sensor_offset(2); | |
488 | show_sensor_offset(3); | |
489 | ||
490 | /* 3 Fans */ | |
20ad93d4 JD |
491 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
492 | char *buf) | |
1da177e4 | 493 | { |
20ad93d4 JD |
494 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
495 | int nr = sensor_attr->index; | |
496 | ||
1da177e4 LT |
497 | struct it87_data *data = it87_update_device(dev); |
498 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr], | |
499 | DIV_FROM_REG(data->fan_div[nr]))); | |
500 | } | |
20ad93d4 JD |
501 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
502 | char *buf) | |
1da177e4 | 503 | { |
20ad93d4 JD |
504 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
505 | int nr = sensor_attr->index; | |
506 | ||
1da177e4 LT |
507 | struct it87_data *data = it87_update_device(dev); |
508 | return sprintf(buf,"%d\n", | |
509 | FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); | |
510 | } | |
20ad93d4 JD |
511 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
512 | char *buf) | |
1da177e4 | 513 | { |
20ad93d4 JD |
514 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
515 | int nr = sensor_attr->index; | |
516 | ||
1da177e4 LT |
517 | struct it87_data *data = it87_update_device(dev); |
518 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
519 | } | |
20ad93d4 JD |
520 | static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, |
521 | char *buf) | |
1da177e4 | 522 | { |
20ad93d4 JD |
523 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
524 | int nr = sensor_attr->index; | |
525 | ||
1da177e4 LT |
526 | struct it87_data *data = it87_update_device(dev); |
527 | return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0); | |
528 | } | |
20ad93d4 JD |
529 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
530 | char *buf) | |
1da177e4 | 531 | { |
20ad93d4 JD |
532 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
533 | int nr = sensor_attr->index; | |
534 | ||
1da177e4 LT |
535 | struct it87_data *data = it87_update_device(dev); |
536 | return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]); | |
537 | } | |
20ad93d4 JD |
538 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
539 | const char *buf, size_t count) | |
1da177e4 | 540 | { |
20ad93d4 JD |
541 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
542 | int nr = sensor_attr->index; | |
543 | ||
1da177e4 LT |
544 | struct i2c_client *client = to_i2c_client(dev); |
545 | struct it87_data *data = i2c_get_clientdata(client); | |
546 | int val = simple_strtol(buf, NULL, 10); | |
07eab46d | 547 | u8 reg = it87_read_value(client, IT87_REG_FAN_DIV); |
1da177e4 | 548 | |
9a61bf63 | 549 | mutex_lock(&data->update_lock); |
07eab46d JD |
550 | switch (nr) { |
551 | case 0: data->fan_div[nr] = reg & 0x07; break; | |
552 | case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break; | |
553 | case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break; | |
554 | } | |
555 | ||
1da177e4 LT |
556 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
557 | it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 558 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
559 | return count; |
560 | } | |
20ad93d4 JD |
561 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
562 | const char *buf, size_t count) | |
1da177e4 | 563 | { |
20ad93d4 JD |
564 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
565 | int nr = sensor_attr->index; | |
566 | ||
1da177e4 LT |
567 | struct i2c_client *client = to_i2c_client(dev); |
568 | struct it87_data *data = i2c_get_clientdata(client); | |
b9e349f7 | 569 | unsigned long val = simple_strtoul(buf, NULL, 10); |
8ab4ec3e | 570 | int min; |
1da177e4 LT |
571 | u8 old; |
572 | ||
9a61bf63 | 573 | mutex_lock(&data->update_lock); |
1da177e4 LT |
574 | old = it87_read_value(client, IT87_REG_FAN_DIV); |
575 | ||
8ab4ec3e JD |
576 | /* Save fan min limit */ |
577 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); | |
1da177e4 LT |
578 | |
579 | switch (nr) { | |
580 | case 0: | |
581 | case 1: | |
582 | data->fan_div[nr] = DIV_TO_REG(val); | |
583 | break; | |
584 | case 2: | |
585 | if (val < 8) | |
586 | data->fan_div[nr] = 1; | |
587 | else | |
588 | data->fan_div[nr] = 3; | |
589 | } | |
590 | val = old & 0x80; | |
591 | val |= (data->fan_div[0] & 0x07); | |
592 | val |= (data->fan_div[1] & 0x07) << 3; | |
593 | if (data->fan_div[2] == 3) | |
594 | val |= 0x1 << 6; | |
595 | it87_write_value(client, IT87_REG_FAN_DIV, val); | |
596 | ||
8ab4ec3e JD |
597 | /* Restore fan min limit */ |
598 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
599 | it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
600 | ||
9a61bf63 | 601 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
602 | return count; |
603 | } | |
20ad93d4 JD |
604 | static ssize_t set_pwm_enable(struct device *dev, |
605 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 606 | { |
20ad93d4 JD |
607 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
608 | int nr = sensor_attr->index; | |
609 | ||
1da177e4 LT |
610 | struct i2c_client *client = to_i2c_client(dev); |
611 | struct it87_data *data = i2c_get_clientdata(client); | |
612 | int val = simple_strtol(buf, NULL, 10); | |
613 | ||
9a61bf63 | 614 | mutex_lock(&data->update_lock); |
1da177e4 LT |
615 | |
616 | if (val == 0) { | |
617 | int tmp; | |
618 | /* make sure the fan is on when in on/off mode */ | |
619 | tmp = it87_read_value(client, IT87_REG_FAN_CTL); | |
620 | it87_write_value(client, IT87_REG_FAN_CTL, tmp | (1 << nr)); | |
621 | /* set on/off mode */ | |
622 | data->fan_main_ctrl &= ~(1 << nr); | |
623 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
624 | } else if (val == 1) { | |
625 | /* set SmartGuardian mode */ | |
626 | data->fan_main_ctrl |= (1 << nr); | |
627 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
628 | /* set saved pwm value, clear FAN_CTLX PWM mode bit */ | |
629 | it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); | |
630 | } else { | |
9a61bf63 | 631 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
632 | return -EINVAL; |
633 | } | |
634 | ||
9a61bf63 | 635 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
636 | return count; |
637 | } | |
20ad93d4 JD |
638 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
639 | const char *buf, size_t count) | |
1da177e4 | 640 | { |
20ad93d4 JD |
641 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
642 | int nr = sensor_attr->index; | |
643 | ||
1da177e4 LT |
644 | struct i2c_client *client = to_i2c_client(dev); |
645 | struct it87_data *data = i2c_get_clientdata(client); | |
646 | int val = simple_strtol(buf, NULL, 10); | |
647 | ||
648 | if (val < 0 || val > 255) | |
649 | return -EINVAL; | |
650 | ||
9a61bf63 | 651 | mutex_lock(&data->update_lock); |
1da177e4 LT |
652 | data->manual_pwm_ctl[nr] = val; |
653 | if (data->fan_main_ctrl & (1 << nr)) | |
654 | it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); | |
9a61bf63 | 655 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
656 | return count; |
657 | } | |
658 | ||
20ad93d4 JD |
659 | #define show_fan_offset(offset) \ |
660 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
661 | show_fan, NULL, offset - 1); \ | |
662 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
663 | show_fan_min, set_fan_min, offset - 1); \ | |
664 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
665 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
666 | |
667 | show_fan_offset(1); | |
668 | show_fan_offset(2); | |
669 | show_fan_offset(3); | |
670 | ||
671 | #define show_pwm_offset(offset) \ | |
20ad93d4 JD |
672 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
673 | show_pwm_enable, set_pwm_enable, offset - 1); \ | |
674 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ | |
675 | show_pwm, set_pwm, offset - 1); | |
1da177e4 LT |
676 | |
677 | show_pwm_offset(1); | |
678 | show_pwm_offset(2); | |
679 | show_pwm_offset(3); | |
680 | ||
17d648bf JD |
681 | /* A different set of callbacks for 16-bit fans */ |
682 | static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, | |
683 | char *buf) | |
684 | { | |
685 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
686 | int nr = sensor_attr->index; | |
687 | struct it87_data *data = it87_update_device(dev); | |
688 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); | |
689 | } | |
690 | ||
691 | static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, | |
692 | char *buf) | |
693 | { | |
694 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
695 | int nr = sensor_attr->index; | |
696 | struct it87_data *data = it87_update_device(dev); | |
697 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); | |
698 | } | |
699 | ||
700 | static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, | |
701 | const char *buf, size_t count) | |
702 | { | |
703 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
704 | int nr = sensor_attr->index; | |
705 | struct i2c_client *client = to_i2c_client(dev); | |
706 | struct it87_data *data = i2c_get_clientdata(client); | |
707 | int val = simple_strtol(buf, NULL, 10); | |
708 | ||
709 | mutex_lock(&data->update_lock); | |
710 | data->fan_min[nr] = FAN16_TO_REG(val); | |
711 | it87_write_value(client, IT87_REG_FAN_MIN(nr), | |
712 | data->fan_min[nr] & 0xff); | |
713 | it87_write_value(client, IT87_REG_FANX_MIN(nr), | |
714 | data->fan_min[nr] >> 8); | |
715 | mutex_unlock(&data->update_lock); | |
716 | return count; | |
717 | } | |
718 | ||
719 | /* We want to use the same sysfs file names as 8-bit fans, but we need | |
720 | different variable names, so we have to use SENSOR_ATTR instead of | |
721 | SENSOR_DEVICE_ATTR. */ | |
722 | #define show_fan16_offset(offset) \ | |
723 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ | |
724 | = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ | |
725 | show_fan16, NULL, offset - 1); \ | |
726 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ | |
727 | = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
728 | show_fan16_min, set_fan16_min, offset - 1) | |
729 | ||
730 | show_fan16_offset(1); | |
731 | show_fan16_offset(2); | |
732 | show_fan16_offset(3); | |
733 | ||
1da177e4 | 734 | /* Alarms */ |
30f74292 | 735 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
736 | { |
737 | struct it87_data *data = it87_update_device(dev); | |
68188ba7 | 738 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 | 739 | } |
1d66c64c | 740 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4 LT |
741 | |
742 | static ssize_t | |
30f74292 | 743 | show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
744 | { |
745 | struct it87_data *data = it87_update_device(dev); | |
a7be58a1 | 746 | return sprintf(buf, "%u\n", data->vrm); |
1da177e4 LT |
747 | } |
748 | static ssize_t | |
30f74292 | 749 | store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
750 | { |
751 | struct i2c_client *client = to_i2c_client(dev); | |
752 | struct it87_data *data = i2c_get_clientdata(client); | |
753 | u32 val; | |
754 | ||
755 | val = simple_strtoul(buf, NULL, 10); | |
756 | data->vrm = val; | |
757 | ||
758 | return count; | |
759 | } | |
760 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
761 | #define device_create_file_vrm(client) \ | |
762 | device_create_file(&client->dev, &dev_attr_vrm) | |
763 | ||
764 | static ssize_t | |
30f74292 | 765 | show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
766 | { |
767 | struct it87_data *data = it87_update_device(dev); | |
768 | return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); | |
769 | } | |
770 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
771 | #define device_create_file_vid(client) \ | |
772 | device_create_file(&client->dev, &dev_attr_cpu0_vid) | |
773 | ||
774 | /* This function is called when: | |
775 | * it87_driver is inserted (when this module is loaded), for each | |
776 | available adapter | |
777 | * when a new adapter is inserted (and it87_driver is still present) */ | |
778 | static int it87_attach_adapter(struct i2c_adapter *adapter) | |
779 | { | |
780 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
781 | return 0; | |
2ed2dc3c | 782 | return i2c_probe(adapter, &addr_data, it87_detect); |
1da177e4 LT |
783 | } |
784 | ||
2d8672c5 JD |
785 | static int it87_isa_attach_adapter(struct i2c_adapter *adapter) |
786 | { | |
787 | return it87_detect(adapter, isa_address, -1); | |
788 | } | |
789 | ||
790 | /* SuperIO detection - will change isa_address if a chip is found */ | |
91749996 | 791 | static int __init it87_find(unsigned short *address) |
1da177e4 LT |
792 | { |
793 | int err = -ENODEV; | |
794 | ||
795 | superio_enter(); | |
796 | chip_type = superio_inw(DEVID); | |
797 | if (chip_type != IT8712F_DEVID | |
17d648bf | 798 | && chip_type != IT8716F_DEVID |
87673dd7 | 799 | && chip_type != IT8718F_DEVID |
1da177e4 LT |
800 | && chip_type != IT8705F_DEVID) |
801 | goto exit; | |
802 | ||
87673dd7 | 803 | superio_select(PME); |
1da177e4 LT |
804 | if (!(superio_inb(IT87_ACT_REG) & 0x01)) { |
805 | pr_info("it87: Device not activated, skipping\n"); | |
806 | goto exit; | |
807 | } | |
808 | ||
809 | *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); | |
810 | if (*address == 0) { | |
811 | pr_info("it87: Base address not set, skipping\n"); | |
812 | goto exit; | |
813 | } | |
814 | ||
815 | err = 0; | |
816 | pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", | |
817 | chip_type, *address, superio_inb(DEVREV) & 0x0f); | |
818 | ||
87673dd7 JD |
819 | /* Read GPIO config and VID value from LDN 7 (GPIO) */ |
820 | if (chip_type != IT8705F_DEVID) { | |
821 | int reg; | |
822 | ||
823 | superio_select(GPIO); | |
824 | if (chip_type == it8718) | |
825 | vid_value = superio_inb(IT87_SIO_VID_REG); | |
826 | ||
827 | reg = superio_inb(IT87_SIO_PINX2_REG); | |
828 | if (reg & (1 << 0)) | |
829 | pr_info("it87: in3 is VCC (+5V)\n"); | |
830 | if (reg & (1 << 1)) | |
831 | pr_info("it87: in7 is VCCH (+5V Stand-By)\n"); | |
832 | } | |
833 | ||
1da177e4 LT |
834 | exit: |
835 | superio_exit(); | |
836 | return err; | |
837 | } | |
838 | ||
2ed2dc3c | 839 | /* This function is called by i2c_probe */ |
c49efcef | 840 | static int it87_detect(struct i2c_adapter *adapter, int address, int kind) |
1da177e4 LT |
841 | { |
842 | int i; | |
843 | struct i2c_client *new_client; | |
844 | struct it87_data *data; | |
845 | int err = 0; | |
846 | const char *name = ""; | |
847 | int is_isa = i2c_is_isa_adapter(adapter); | |
848 | int enable_pwm_interface; | |
849 | ||
850 | if (!is_isa && | |
851 | !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
852 | goto ERROR0; | |
853 | ||
854 | /* Reserve the ISA region */ | |
855 | if (is_isa) | |
cdaf7934 LR |
856 | if (!request_region(address, IT87_EXTENT, |
857 | it87_isa_driver.driver.name)) | |
1da177e4 LT |
858 | goto ERROR0; |
859 | ||
91749996 | 860 | /* For now, we presume we have a valid client. We create the |
1da177e4 LT |
861 | client structure, even though we cannot fill it completely yet. |
862 | But it allows us to access it87_{read,write}_value. */ | |
863 | ||
ba9c2e8d | 864 | if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { |
1da177e4 LT |
865 | err = -ENOMEM; |
866 | goto ERROR1; | |
867 | } | |
1da177e4 LT |
868 | |
869 | new_client = &data->client; | |
870 | if (is_isa) | |
9a61bf63 | 871 | mutex_init(&data->lock); |
1da177e4 LT |
872 | i2c_set_clientdata(new_client, data); |
873 | new_client->addr = address; | |
874 | new_client->adapter = adapter; | |
fde09509 | 875 | new_client->driver = is_isa ? &it87_isa_driver : &it87_driver; |
1da177e4 LT |
876 | new_client->flags = 0; |
877 | ||
878 | /* Now, we do the remaining detection. */ | |
879 | ||
880 | if (kind < 0) { | |
881 | if ((it87_read_value(new_client, IT87_REG_CONFIG) & 0x80) | |
882 | || (!is_isa | |
883 | && it87_read_value(new_client, IT87_REG_I2C_ADDR) != address)) { | |
884 | err = -ENODEV; | |
885 | goto ERROR2; | |
886 | } | |
887 | } | |
888 | ||
889 | /* Determine the chip type. */ | |
890 | if (kind <= 0) { | |
891 | i = it87_read_value(new_client, IT87_REG_CHIPID); | |
892 | if (i == 0x90) { | |
893 | kind = it87; | |
17d648bf JD |
894 | if (is_isa) { |
895 | switch (chip_type) { | |
896 | case IT8712F_DEVID: | |
897 | kind = it8712; | |
898 | break; | |
899 | case IT8716F_DEVID: | |
900 | kind = it8716; | |
901 | break; | |
87673dd7 JD |
902 | case IT8718F_DEVID: |
903 | kind = it8718; | |
904 | break; | |
17d648bf JD |
905 | } |
906 | } | |
1da177e4 LT |
907 | } |
908 | else { | |
909 | if (kind == 0) | |
910 | dev_info(&adapter->dev, | |
911 | "Ignoring 'force' parameter for unknown chip at " | |
912 | "adapter %d, address 0x%02x\n", | |
913 | i2c_adapter_id(adapter), address); | |
914 | err = -ENODEV; | |
915 | goto ERROR2; | |
916 | } | |
917 | } | |
918 | ||
919 | if (kind == it87) { | |
920 | name = "it87"; | |
921 | } else if (kind == it8712) { | |
922 | name = "it8712"; | |
17d648bf JD |
923 | } else if (kind == it8716) { |
924 | name = "it8716"; | |
87673dd7 JD |
925 | } else if (kind == it8718) { |
926 | name = "it8718"; | |
1da177e4 LT |
927 | } |
928 | ||
929 | /* Fill in the remaining client fields and put it into the global list */ | |
930 | strlcpy(new_client->name, name, I2C_NAME_SIZE); | |
931 | data->type = kind; | |
932 | data->valid = 0; | |
9a61bf63 | 933 | mutex_init(&data->update_lock); |
1da177e4 LT |
934 | |
935 | /* Tell the I2C layer a new client has arrived */ | |
936 | if ((err = i2c_attach_client(new_client))) | |
937 | goto ERROR2; | |
938 | ||
c5e3fbf2 JD |
939 | if (!is_isa) |
940 | dev_info(&new_client->dev, "The I2C interface to IT87xxF " | |
941 | "hardware monitoring chips is deprecated. Please " | |
942 | "report if you still rely on it.\n"); | |
943 | ||
1da177e4 LT |
944 | /* Check PWM configuration */ |
945 | enable_pwm_interface = it87_check_pwm(new_client); | |
946 | ||
947 | /* Initialize the IT87 chip */ | |
948 | it87_init_client(new_client, data); | |
949 | ||
950 | /* Register sysfs hooks */ | |
943b0830 MH |
951 | data->class_dev = hwmon_device_register(&new_client->dev); |
952 | if (IS_ERR(data->class_dev)) { | |
953 | err = PTR_ERR(data->class_dev); | |
954 | goto ERROR3; | |
955 | } | |
956 | ||
20ad93d4 JD |
957 | device_create_file(&new_client->dev, &sensor_dev_attr_in0_input.dev_attr); |
958 | device_create_file(&new_client->dev, &sensor_dev_attr_in1_input.dev_attr); | |
959 | device_create_file(&new_client->dev, &sensor_dev_attr_in2_input.dev_attr); | |
960 | device_create_file(&new_client->dev, &sensor_dev_attr_in3_input.dev_attr); | |
961 | device_create_file(&new_client->dev, &sensor_dev_attr_in4_input.dev_attr); | |
962 | device_create_file(&new_client->dev, &sensor_dev_attr_in5_input.dev_attr); | |
963 | device_create_file(&new_client->dev, &sensor_dev_attr_in6_input.dev_attr); | |
964 | device_create_file(&new_client->dev, &sensor_dev_attr_in7_input.dev_attr); | |
965 | device_create_file(&new_client->dev, &sensor_dev_attr_in8_input.dev_attr); | |
966 | device_create_file(&new_client->dev, &sensor_dev_attr_in0_min.dev_attr); | |
967 | device_create_file(&new_client->dev, &sensor_dev_attr_in1_min.dev_attr); | |
968 | device_create_file(&new_client->dev, &sensor_dev_attr_in2_min.dev_attr); | |
969 | device_create_file(&new_client->dev, &sensor_dev_attr_in3_min.dev_attr); | |
970 | device_create_file(&new_client->dev, &sensor_dev_attr_in4_min.dev_attr); | |
971 | device_create_file(&new_client->dev, &sensor_dev_attr_in5_min.dev_attr); | |
972 | device_create_file(&new_client->dev, &sensor_dev_attr_in6_min.dev_attr); | |
973 | device_create_file(&new_client->dev, &sensor_dev_attr_in7_min.dev_attr); | |
974 | device_create_file(&new_client->dev, &sensor_dev_attr_in0_max.dev_attr); | |
975 | device_create_file(&new_client->dev, &sensor_dev_attr_in1_max.dev_attr); | |
976 | device_create_file(&new_client->dev, &sensor_dev_attr_in2_max.dev_attr); | |
977 | device_create_file(&new_client->dev, &sensor_dev_attr_in3_max.dev_attr); | |
978 | device_create_file(&new_client->dev, &sensor_dev_attr_in4_max.dev_attr); | |
979 | device_create_file(&new_client->dev, &sensor_dev_attr_in5_max.dev_attr); | |
980 | device_create_file(&new_client->dev, &sensor_dev_attr_in6_max.dev_attr); | |
981 | device_create_file(&new_client->dev, &sensor_dev_attr_in7_max.dev_attr); | |
982 | device_create_file(&new_client->dev, &sensor_dev_attr_temp1_input.dev_attr); | |
983 | device_create_file(&new_client->dev, &sensor_dev_attr_temp2_input.dev_attr); | |
984 | device_create_file(&new_client->dev, &sensor_dev_attr_temp3_input.dev_attr); | |
985 | device_create_file(&new_client->dev, &sensor_dev_attr_temp1_max.dev_attr); | |
986 | device_create_file(&new_client->dev, &sensor_dev_attr_temp2_max.dev_attr); | |
987 | device_create_file(&new_client->dev, &sensor_dev_attr_temp3_max.dev_attr); | |
988 | device_create_file(&new_client->dev, &sensor_dev_attr_temp1_min.dev_attr); | |
989 | device_create_file(&new_client->dev, &sensor_dev_attr_temp2_min.dev_attr); | |
990 | device_create_file(&new_client->dev, &sensor_dev_attr_temp3_min.dev_attr); | |
991 | device_create_file(&new_client->dev, &sensor_dev_attr_temp1_type.dev_attr); | |
992 | device_create_file(&new_client->dev, &sensor_dev_attr_temp2_type.dev_attr); | |
993 | device_create_file(&new_client->dev, &sensor_dev_attr_temp3_type.dev_attr); | |
17d648bf | 994 | |
9060f8bd | 995 | /* Do not create fan files for disabled fans */ |
87673dd7 JD |
996 | if (data->type == it8716 || data->type == it8718) { |
997 | /* 16-bit tachometers */ | |
9060f8bd JD |
998 | if (data->has_fan & (1 << 0)) { |
999 | device_create_file(&new_client->dev, | |
1000 | &sensor_dev_attr_fan1_input16.dev_attr); | |
1001 | device_create_file(&new_client->dev, | |
1002 | &sensor_dev_attr_fan1_min16.dev_attr); | |
1003 | } | |
1004 | if (data->has_fan & (1 << 1)) { | |
1005 | device_create_file(&new_client->dev, | |
1006 | &sensor_dev_attr_fan2_input16.dev_attr); | |
1007 | device_create_file(&new_client->dev, | |
1008 | &sensor_dev_attr_fan2_min16.dev_attr); | |
1009 | } | |
1010 | if (data->has_fan & (1 << 2)) { | |
1011 | device_create_file(&new_client->dev, | |
1012 | &sensor_dev_attr_fan3_input16.dev_attr); | |
1013 | device_create_file(&new_client->dev, | |
1014 | &sensor_dev_attr_fan3_min16.dev_attr); | |
1015 | } | |
17d648bf | 1016 | } else { |
87673dd7 | 1017 | /* 8-bit tachometers with clock divider */ |
9060f8bd JD |
1018 | if (data->has_fan & (1 << 0)) { |
1019 | device_create_file(&new_client->dev, | |
1020 | &sensor_dev_attr_fan1_input.dev_attr); | |
1021 | device_create_file(&new_client->dev, | |
1022 | &sensor_dev_attr_fan1_min.dev_attr); | |
1023 | device_create_file(&new_client->dev, | |
1024 | &sensor_dev_attr_fan1_div.dev_attr); | |
1025 | } | |
1026 | if (data->has_fan & (1 << 1)) { | |
1027 | device_create_file(&new_client->dev, | |
1028 | &sensor_dev_attr_fan2_input.dev_attr); | |
1029 | device_create_file(&new_client->dev, | |
1030 | &sensor_dev_attr_fan2_min.dev_attr); | |
1031 | device_create_file(&new_client->dev, | |
1032 | &sensor_dev_attr_fan2_div.dev_attr); | |
1033 | } | |
1034 | if (data->has_fan & (1 << 2)) { | |
1035 | device_create_file(&new_client->dev, | |
1036 | &sensor_dev_attr_fan3_input.dev_attr); | |
1037 | device_create_file(&new_client->dev, | |
1038 | &sensor_dev_attr_fan3_min.dev_attr); | |
1039 | device_create_file(&new_client->dev, | |
1040 | &sensor_dev_attr_fan3_div.dev_attr); | |
1041 | } | |
17d648bf JD |
1042 | } |
1043 | ||
1da177e4 LT |
1044 | device_create_file(&new_client->dev, &dev_attr_alarms); |
1045 | if (enable_pwm_interface) { | |
20ad93d4 JD |
1046 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm1_enable.dev_attr); |
1047 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm2_enable.dev_attr); | |
1048 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm3_enable.dev_attr); | |
1049 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm1.dev_attr); | |
1050 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm2.dev_attr); | |
1051 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm3.dev_attr); | |
1da177e4 LT |
1052 | } |
1053 | ||
87673dd7 JD |
1054 | if (data->type == it8712 || data->type == it8716 |
1055 | || data->type == it8718) { | |
303760b4 | 1056 | data->vrm = vid_which_vrm(); |
87673dd7 JD |
1057 | /* VID reading from Super-I/O config space if available */ |
1058 | data->vid = vid_value; | |
1da177e4 LT |
1059 | device_create_file_vrm(new_client); |
1060 | device_create_file_vid(new_client); | |
1061 | } | |
1062 | ||
1063 | return 0; | |
1064 | ||
943b0830 MH |
1065 | ERROR3: |
1066 | i2c_detach_client(new_client); | |
1da177e4 LT |
1067 | ERROR2: |
1068 | kfree(data); | |
1069 | ERROR1: | |
1070 | if (is_isa) | |
1071 | release_region(address, IT87_EXTENT); | |
1072 | ERROR0: | |
1073 | return err; | |
1074 | } | |
1075 | ||
1076 | static int it87_detach_client(struct i2c_client *client) | |
1077 | { | |
943b0830 | 1078 | struct it87_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
1079 | int err; |
1080 | ||
943b0830 MH |
1081 | hwmon_device_unregister(data->class_dev); |
1082 | ||
7bef5594 | 1083 | if ((err = i2c_detach_client(client))) |
1da177e4 | 1084 | return err; |
1da177e4 LT |
1085 | |
1086 | if(i2c_is_isa_client(client)) | |
1087 | release_region(client->addr, IT87_EXTENT); | |
943b0830 | 1088 | kfree(data); |
1da177e4 LT |
1089 | |
1090 | return 0; | |
1091 | } | |
1092 | ||
44bbe87e | 1093 | /* The SMBus locks itself, but ISA access must be locked explicitly! |
1da177e4 LT |
1094 | We don't want to lock the whole ISA bus, so we lock each client |
1095 | separately. | |
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. */ | |
1098 | static int it87_read_value(struct i2c_client *client, u8 reg) | |
1099 | { | |
1100 | struct it87_data *data = i2c_get_clientdata(client); | |
1101 | ||
1102 | int res; | |
1103 | if (i2c_is_isa_client(client)) { | |
9a61bf63 | 1104 | mutex_lock(&data->lock); |
1da177e4 LT |
1105 | outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); |
1106 | res = inb_p(client->addr + IT87_DATA_REG_OFFSET); | |
9a61bf63 | 1107 | mutex_unlock(&data->lock); |
1da177e4 LT |
1108 | return res; |
1109 | } else | |
1110 | return i2c_smbus_read_byte_data(client, reg); | |
1111 | } | |
1112 | ||
44bbe87e | 1113 | /* The SMBus locks itself, but ISA access muse be locked explicitly! |
1da177e4 LT |
1114 | We don't want to lock the whole ISA bus, so we lock each client |
1115 | separately. | |
1116 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, | |
1117 | would slow down the IT87 access and should not be necessary. */ | |
1118 | static int it87_write_value(struct i2c_client *client, u8 reg, u8 value) | |
1119 | { | |
1120 | struct it87_data *data = i2c_get_clientdata(client); | |
1121 | ||
1122 | if (i2c_is_isa_client(client)) { | |
9a61bf63 | 1123 | mutex_lock(&data->lock); |
1da177e4 LT |
1124 | outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); |
1125 | outb_p(value, client->addr + IT87_DATA_REG_OFFSET); | |
9a61bf63 | 1126 | mutex_unlock(&data->lock); |
1da177e4 LT |
1127 | return 0; |
1128 | } else | |
1129 | return i2c_smbus_write_byte_data(client, reg, value); | |
1130 | } | |
1131 | ||
1132 | /* Return 1 if and only if the PWM interface is safe to use */ | |
1133 | static int it87_check_pwm(struct i2c_client *client) | |
1134 | { | |
1135 | /* Some BIOSes fail to correctly configure the IT87 fans. All fans off | |
1136 | * and polarity set to active low is sign that this is the case so we | |
1137 | * disable pwm control to protect the user. */ | |
1138 | int tmp = it87_read_value(client, IT87_REG_FAN_CTL); | |
1139 | if ((tmp & 0x87) == 0) { | |
1140 | if (fix_pwm_polarity) { | |
1141 | /* The user asks us to attempt a chip reconfiguration. | |
1142 | * This means switching to active high polarity and | |
1143 | * inverting all fan speed values. */ | |
1144 | int i; | |
1145 | u8 pwm[3]; | |
1146 | ||
1147 | for (i = 0; i < 3; i++) | |
1148 | pwm[i] = it87_read_value(client, | |
1149 | IT87_REG_PWM(i)); | |
1150 | ||
1151 | /* If any fan is in automatic pwm mode, the polarity | |
1152 | * might be correct, as suspicious as it seems, so we | |
1153 | * better don't change anything (but still disable the | |
1154 | * PWM interface). */ | |
1155 | if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { | |
1156 | dev_info(&client->dev, "Reconfiguring PWM to " | |
1157 | "active high polarity\n"); | |
1158 | it87_write_value(client, IT87_REG_FAN_CTL, | |
1159 | tmp | 0x87); | |
1160 | for (i = 0; i < 3; i++) | |
1161 | it87_write_value(client, | |
1162 | IT87_REG_PWM(i), | |
1163 | 0x7f & ~pwm[i]); | |
1164 | return 1; | |
1165 | } | |
1166 | ||
1167 | dev_info(&client->dev, "PWM configuration is " | |
1168 | "too broken to be fixed\n"); | |
1169 | } | |
1170 | ||
1171 | dev_info(&client->dev, "Detected broken BIOS " | |
1172 | "defaults, disabling PWM interface\n"); | |
1173 | return 0; | |
1174 | } else if (fix_pwm_polarity) { | |
1175 | dev_info(&client->dev, "PWM configuration looks " | |
1176 | "sane, won't touch\n"); | |
1177 | } | |
1178 | ||
1179 | return 1; | |
1180 | } | |
1181 | ||
1182 | /* Called when we have found a new IT87. */ | |
1183 | static void it87_init_client(struct i2c_client *client, struct it87_data *data) | |
1184 | { | |
1185 | int tmp, i; | |
1186 | ||
1187 | /* initialize to sane defaults: | |
1188 | * - if the chip is in manual pwm mode, this will be overwritten with | |
1189 | * the actual settings on the chip (so in this case, initialization | |
1190 | * is not needed) | |
1191 | * - if in automatic or on/off mode, we could switch to manual mode, | |
1192 | * read the registers and set manual_pwm_ctl accordingly, but currently | |
1193 | * this is not implemented, so we initialize to something sane */ | |
1194 | for (i = 0; i < 3; i++) { | |
1195 | data->manual_pwm_ctl[i] = 0xff; | |
1196 | } | |
1197 | ||
c5df9b7a JD |
1198 | /* Some chips seem to have default value 0xff for all limit |
1199 | * registers. For low voltage limits it makes no sense and triggers | |
1200 | * alarms, so change to 0 instead. For high temperature limits, it | |
1201 | * means -1 degree C, which surprisingly doesn't trigger an alarm, | |
1202 | * but is still confusing, so change to 127 degrees C. */ | |
1203 | for (i = 0; i < 8; i++) { | |
1204 | tmp = it87_read_value(client, IT87_REG_VIN_MIN(i)); | |
1205 | if (tmp == 0xff) | |
1206 | it87_write_value(client, IT87_REG_VIN_MIN(i), 0); | |
1207 | } | |
1208 | for (i = 0; i < 3; i++) { | |
1209 | tmp = it87_read_value(client, IT87_REG_TEMP_HIGH(i)); | |
1210 | if (tmp == 0xff) | |
1211 | it87_write_value(client, IT87_REG_TEMP_HIGH(i), 127); | |
1212 | } | |
1213 | ||
1da177e4 LT |
1214 | /* Check if temperature channnels are reset manually or by some reason */ |
1215 | tmp = it87_read_value(client, IT87_REG_TEMP_ENABLE); | |
1216 | if ((tmp & 0x3f) == 0) { | |
1217 | /* Temp1,Temp3=thermistor; Temp2=thermal diode */ | |
1218 | tmp = (tmp & 0xc0) | 0x2a; | |
1219 | it87_write_value(client, IT87_REG_TEMP_ENABLE, tmp); | |
1220 | } | |
1221 | data->sensor = tmp; | |
1222 | ||
1223 | /* Check if voltage monitors are reset manually or by some reason */ | |
1224 | tmp = it87_read_value(client, IT87_REG_VIN_ENABLE); | |
1225 | if ((tmp & 0xff) == 0) { | |
1226 | /* Enable all voltage monitors */ | |
1227 | it87_write_value(client, IT87_REG_VIN_ENABLE, 0xff); | |
1228 | } | |
1229 | ||
1230 | /* Check if tachometers are reset manually or by some reason */ | |
1231 | data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL); | |
1232 | if ((data->fan_main_ctrl & 0x70) == 0) { | |
1233 | /* Enable all fan tachometers */ | |
1234 | data->fan_main_ctrl |= 0x70; | |
1235 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
1236 | } | |
9060f8bd | 1237 | data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; |
1da177e4 | 1238 | |
17d648bf | 1239 | /* Set tachometers to 16-bit mode if needed */ |
87673dd7 | 1240 | if (data->type == it8716 || data->type == it8718) { |
17d648bf | 1241 | tmp = it87_read_value(client, IT87_REG_FAN_16BIT); |
9060f8bd | 1242 | if (~tmp & 0x07 & data->has_fan) { |
17d648bf JD |
1243 | dev_dbg(&client->dev, |
1244 | "Setting fan1-3 to 16-bit mode\n"); | |
1245 | it87_write_value(client, IT87_REG_FAN_16BIT, | |
1246 | tmp | 0x07); | |
1247 | } | |
1248 | } | |
1249 | ||
1da177e4 LT |
1250 | /* Set current fan mode registers and the default settings for the |
1251 | * other mode registers */ | |
1252 | for (i = 0; i < 3; i++) { | |
1253 | if (data->fan_main_ctrl & (1 << i)) { | |
1254 | /* pwm mode */ | |
1255 | tmp = it87_read_value(client, IT87_REG_PWM(i)); | |
1256 | if (tmp & 0x80) { | |
1257 | /* automatic pwm - not yet implemented, but | |
1258 | * leave the settings made by the BIOS alone | |
1259 | * until a change is requested via the sysfs | |
1260 | * interface */ | |
1261 | } else { | |
1262 | /* manual pwm */ | |
1263 | data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp); | |
1264 | } | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | /* Start monitoring */ | |
1269 | it87_write_value(client, IT87_REG_CONFIG, | |
1270 | (it87_read_value(client, IT87_REG_CONFIG) & 0x36) | |
1271 | | (update_vbat ? 0x41 : 0x01)); | |
1272 | } | |
1273 | ||
1274 | static struct it87_data *it87_update_device(struct device *dev) | |
1275 | { | |
1276 | struct i2c_client *client = to_i2c_client(dev); | |
1277 | struct it87_data *data = i2c_get_clientdata(client); | |
1278 | int i; | |
1279 | ||
9a61bf63 | 1280 | mutex_lock(&data->update_lock); |
1da177e4 LT |
1281 | |
1282 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
1283 | || !data->valid) { | |
1284 | ||
1285 | if (update_vbat) { | |
1286 | /* Cleared after each update, so reenable. Value | |
1287 | returned by this read will be previous value */ | |
1288 | it87_write_value(client, IT87_REG_CONFIG, | |
1289 | it87_read_value(client, IT87_REG_CONFIG) | 0x40); | |
1290 | } | |
1291 | for (i = 0; i <= 7; i++) { | |
1292 | data->in[i] = | |
1293 | it87_read_value(client, IT87_REG_VIN(i)); | |
1294 | data->in_min[i] = | |
1295 | it87_read_value(client, IT87_REG_VIN_MIN(i)); | |
1296 | data->in_max[i] = | |
1297 | it87_read_value(client, IT87_REG_VIN_MAX(i)); | |
1298 | } | |
3543a53f | 1299 | /* in8 (battery) has no limit registers */ |
1da177e4 LT |
1300 | data->in[8] = |
1301 | it87_read_value(client, IT87_REG_VIN(8)); | |
1da177e4 LT |
1302 | |
1303 | for (i = 0; i < 3; i++) { | |
9060f8bd JD |
1304 | /* Skip disabled fans */ |
1305 | if (!(data->has_fan & (1 << i))) | |
1306 | continue; | |
1307 | ||
1da177e4 LT |
1308 | data->fan_min[i] = |
1309 | it87_read_value(client, IT87_REG_FAN_MIN(i)); | |
17d648bf JD |
1310 | data->fan[i] = it87_read_value(client, |
1311 | IT87_REG_FAN(i)); | |
1312 | /* Add high byte if in 16-bit mode */ | |
87673dd7 | 1313 | if (data->type == it8716 || data->type == it8718) { |
17d648bf JD |
1314 | data->fan[i] |= it87_read_value(client, |
1315 | IT87_REG_FANX(i)) << 8; | |
1316 | data->fan_min[i] |= it87_read_value(client, | |
1317 | IT87_REG_FANX_MIN(i)) << 8; | |
1318 | } | |
1da177e4 LT |
1319 | } |
1320 | for (i = 0; i < 3; i++) { | |
1321 | data->temp[i] = | |
1322 | it87_read_value(client, IT87_REG_TEMP(i)); | |
1323 | data->temp_high[i] = | |
1324 | it87_read_value(client, IT87_REG_TEMP_HIGH(i)); | |
1325 | data->temp_low[i] = | |
1326 | it87_read_value(client, IT87_REG_TEMP_LOW(i)); | |
1327 | } | |
1328 | ||
17d648bf | 1329 | /* Newer chips don't have clock dividers */ |
87673dd7 JD |
1330 | if ((data->has_fan & 0x07) && data->type != it8716 |
1331 | && data->type != it8718) { | |
17d648bf JD |
1332 | i = it87_read_value(client, IT87_REG_FAN_DIV); |
1333 | data->fan_div[0] = i & 0x07; | |
1334 | data->fan_div[1] = (i >> 3) & 0x07; | |
1335 | data->fan_div[2] = (i & 0x40) ? 3 : 1; | |
1336 | } | |
1da177e4 LT |
1337 | |
1338 | data->alarms = | |
1339 | it87_read_value(client, IT87_REG_ALARM1) | | |
1340 | (it87_read_value(client, IT87_REG_ALARM2) << 8) | | |
1341 | (it87_read_value(client, IT87_REG_ALARM3) << 16); | |
1342 | data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL); | |
1343 | ||
1344 | data->sensor = it87_read_value(client, IT87_REG_TEMP_ENABLE); | |
1345 | /* The 8705 does not have VID capability */ | |
17d648bf | 1346 | if (data->type == it8712 || data->type == it8716) { |
1da177e4 | 1347 | data->vid = it87_read_value(client, IT87_REG_VID); |
17d648bf JD |
1348 | /* The older IT8712F revisions had only 5 VID pins, |
1349 | but we assume it is always safe to read 6 bits. */ | |
1350 | data->vid &= 0x3f; | |
1da177e4 LT |
1351 | } |
1352 | data->last_updated = jiffies; | |
1353 | data->valid = 1; | |
1354 | } | |
1355 | ||
9a61bf63 | 1356 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1357 | |
1358 | return data; | |
1359 | } | |
1360 | ||
1361 | static int __init sm_it87_init(void) | |
1362 | { | |
91749996 | 1363 | int res; |
fde09509 JD |
1364 | |
1365 | res = i2c_add_driver(&it87_driver); | |
1366 | if (res) | |
1367 | return res; | |
1368 | ||
91749996 JD |
1369 | if (!it87_find(&isa_address)) { |
1370 | res = i2c_isa_add_driver(&it87_isa_driver); | |
1371 | if (res) { | |
1372 | i2c_del_driver(&it87_driver); | |
1373 | return res; | |
1374 | } | |
fde09509 JD |
1375 | } |
1376 | ||
1377 | return 0; | |
1da177e4 LT |
1378 | } |
1379 | ||
1380 | static void __exit sm_it87_exit(void) | |
1381 | { | |
be79c383 JD |
1382 | if (isa_address) |
1383 | i2c_isa_del_driver(&it87_isa_driver); | |
1da177e4 LT |
1384 | i2c_del_driver(&it87_driver); |
1385 | } | |
1386 | ||
1387 | ||
b19367c6 JD |
1388 | MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>, " |
1389 | "Jean Delvare <khali@linux-fr.org>"); | |
87673dd7 | 1390 | MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F, SiS950 driver"); |
1da177e4 LT |
1391 | module_param(update_vbat, bool, 0); |
1392 | MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); | |
1393 | module_param(fix_pwm_polarity, bool, 0); | |
1394 | MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)"); | |
1395 | MODULE_LICENSE("GPL"); | |
1396 | ||
1397 | module_init(sm_it87_init); | |
1398 | module_exit(sm_it87_exit); |