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Commit | Line | Data |
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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> | |
12 | Largely inspired by lm78.c of the same package | |
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 | ||
29 | /* | |
30 | djg@pdp8.net David Gesswein 7/18/01 | |
31 | Modified to fix bug with not all alarms enabled. | |
32 | Added ability to read battery voltage and select temperature sensor | |
33 | type at module load time. | |
34 | */ | |
35 | ||
1da177e4 LT |
36 | #include <linux/module.h> |
37 | #include <linux/init.h> | |
38 | #include <linux/slab.h> | |
39 | #include <linux/jiffies.h> | |
40 | #include <linux/i2c.h> | |
fde09509 | 41 | #include <linux/i2c-isa.h> |
943b0830 | 42 | #include <linux/hwmon.h> |
303760b4 JD |
43 | #include <linux/hwmon-sysfs.h> |
44 | #include <linux/hwmon-vid.h> | |
943b0830 | 45 | #include <linux/err.h> |
9a61bf63 | 46 | #include <linux/mutex.h> |
1da177e4 LT |
47 | #include <asm/io.h> |
48 | ||
49 | ||
50 | /* Addresses to scan */ | |
c5e3fbf2 | 51 | static unsigned short normal_i2c[] = { 0x2d, I2C_CLIENT_END }; |
91749996 | 52 | static unsigned short isa_address; |
1da177e4 LT |
53 | |
54 | /* Insmod parameters */ | |
87673dd7 | 55 | I2C_CLIENT_INSMOD_4(it87, it8712, it8716, it8718); |
1da177e4 LT |
56 | |
57 | #define REG 0x2e /* The register to read/write */ | |
58 | #define DEV 0x07 /* Register: Logical device select */ | |
59 | #define VAL 0x2f /* The value to read/write */ | |
60 | #define PME 0x04 /* The device with the fan registers in it */ | |
87673dd7 | 61 | #define GPIO 0x07 /* The device with the IT8718F VID value in it */ |
1da177e4 LT |
62 | #define DEVID 0x20 /* Register: Device ID */ |
63 | #define DEVREV 0x22 /* Register: Device Revision */ | |
64 | ||
65 | static inline int | |
66 | superio_inb(int reg) | |
67 | { | |
68 | outb(reg, REG); | |
69 | return inb(VAL); | |
70 | } | |
71 | ||
72 | static int superio_inw(int reg) | |
73 | { | |
74 | int val; | |
75 | outb(reg++, REG); | |
76 | val = inb(VAL) << 8; | |
77 | outb(reg, REG); | |
78 | val |= inb(VAL); | |
79 | return val; | |
80 | } | |
81 | ||
82 | static inline void | |
87673dd7 | 83 | superio_select(int ldn) |
1da177e4 LT |
84 | { |
85 | outb(DEV, REG); | |
87673dd7 | 86 | outb(ldn, VAL); |
1da177e4 LT |
87 | } |
88 | ||
89 | static inline void | |
90 | superio_enter(void) | |
91 | { | |
92 | outb(0x87, REG); | |
93 | outb(0x01, REG); | |
94 | outb(0x55, REG); | |
95 | outb(0x55, REG); | |
96 | } | |
97 | ||
98 | static inline void | |
99 | superio_exit(void) | |
100 | { | |
101 | outb(0x02, REG); | |
102 | outb(0x02, VAL); | |
103 | } | |
104 | ||
87673dd7 | 105 | /* Logical device 4 registers */ |
1da177e4 LT |
106 | #define IT8712F_DEVID 0x8712 |
107 | #define IT8705F_DEVID 0x8705 | |
17d648bf | 108 | #define IT8716F_DEVID 0x8716 |
87673dd7 | 109 | #define IT8718F_DEVID 0x8718 |
1da177e4 LT |
110 | #define IT87_ACT_REG 0x30 |
111 | #define IT87_BASE_REG 0x60 | |
112 | ||
87673dd7 JD |
113 | /* Logical device 7 registers (IT8712F and later) */ |
114 | #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ | |
115 | #define IT87_SIO_VID_REG 0xfc /* VID value */ | |
116 | ||
1da177e4 LT |
117 | /* Update battery voltage after every reading if true */ |
118 | static int update_vbat; | |
119 | ||
120 | /* Not all BIOSes properly configure the PWM registers */ | |
121 | static int fix_pwm_polarity; | |
122 | ||
87673dd7 | 123 | /* Values read from Super-I/O config space */ |
1da177e4 | 124 | static u16 chip_type; |
87673dd7 | 125 | static u8 vid_value; |
1da177e4 LT |
126 | |
127 | /* Many IT87 constants specified below */ | |
128 | ||
129 | /* Length of ISA address segment */ | |
130 | #define IT87_EXTENT 8 | |
131 | ||
132 | /* Where are the ISA address/data registers relative to the base address */ | |
133 | #define IT87_ADDR_REG_OFFSET 5 | |
134 | #define IT87_DATA_REG_OFFSET 6 | |
135 | ||
136 | /*----- The IT87 registers -----*/ | |
137 | ||
138 | #define IT87_REG_CONFIG 0x00 | |
139 | ||
140 | #define IT87_REG_ALARM1 0x01 | |
141 | #define IT87_REG_ALARM2 0x02 | |
142 | #define IT87_REG_ALARM3 0x03 | |
143 | ||
87673dd7 JD |
144 | /* The IT8718F has the VID value in a different register, in Super-I/O |
145 | configuration space. */ | |
1da177e4 | 146 | #define IT87_REG_VID 0x0a |
17d648bf JD |
147 | /* Warning: register 0x0b is used for something completely different in |
148 | new chips/revisions. I suspect only 16-bit tachometer mode will work | |
149 | for these. */ | |
1da177e4 | 150 | #define IT87_REG_FAN_DIV 0x0b |
17d648bf | 151 | #define IT87_REG_FAN_16BIT 0x0c |
1da177e4 LT |
152 | |
153 | /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ | |
154 | ||
155 | #define IT87_REG_FAN(nr) (0x0d + (nr)) | |
156 | #define IT87_REG_FAN_MIN(nr) (0x10 + (nr)) | |
17d648bf JD |
157 | #define IT87_REG_FANX(nr) (0x18 + (nr)) |
158 | #define IT87_REG_FANX_MIN(nr) (0x1b + (nr)) | |
1da177e4 LT |
159 | #define IT87_REG_FAN_MAIN_CTRL 0x13 |
160 | #define IT87_REG_FAN_CTL 0x14 | |
161 | #define IT87_REG_PWM(nr) (0x15 + (nr)) | |
162 | ||
163 | #define IT87_REG_VIN(nr) (0x20 + (nr)) | |
164 | #define IT87_REG_TEMP(nr) (0x29 + (nr)) | |
165 | ||
166 | #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) | |
167 | #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) | |
168 | #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) | |
169 | #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) | |
170 | ||
171 | #define IT87_REG_I2C_ADDR 0x48 | |
172 | ||
173 | #define IT87_REG_VIN_ENABLE 0x50 | |
174 | #define IT87_REG_TEMP_ENABLE 0x51 | |
175 | ||
176 | #define IT87_REG_CHIPID 0x58 | |
177 | ||
178 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255)) | |
179 | #define IN_FROM_REG(val) ((val) * 16) | |
180 | ||
181 | static inline u8 FAN_TO_REG(long rpm, int div) | |
182 | { | |
183 | if (rpm == 0) | |
184 | return 255; | |
185 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
186 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, | |
187 | 254); | |
188 | } | |
189 | ||
17d648bf JD |
190 | static inline u16 FAN16_TO_REG(long rpm) |
191 | { | |
192 | if (rpm == 0) | |
193 | return 0xffff; | |
194 | return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); | |
195 | } | |
196 | ||
1da177e4 | 197 | #define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div))) |
17d648bf JD |
198 | /* The divider is fixed to 2 in 16-bit mode */ |
199 | #define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2)) | |
1da177e4 LT |
200 | |
201 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\ | |
202 | ((val)+500)/1000),-128,127)) | |
203 | #define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000) | |
204 | ||
1da177e4 LT |
205 | #define PWM_TO_REG(val) ((val) >> 1) |
206 | #define PWM_FROM_REG(val) (((val)&0x7f) << 1) | |
207 | ||
208 | static int DIV_TO_REG(int val) | |
209 | { | |
210 | int answer = 0; | |
b9e349f7 | 211 | while (answer < 7 && (val >>= 1)) |
1da177e4 LT |
212 | answer++; |
213 | return answer; | |
214 | } | |
215 | #define DIV_FROM_REG(val) (1 << (val)) | |
216 | ||
217 | ||
218 | /* For each registered IT87, we need to keep some data in memory. That | |
219 | data is pointed to by it87_list[NR]->data. The structure itself is | |
220 | dynamically allocated, at the same time when a new it87 client is | |
221 | allocated. */ | |
222 | struct it87_data { | |
223 | struct i2c_client client; | |
943b0830 | 224 | struct class_device *class_dev; |
9a61bf63 | 225 | struct mutex lock; |
1da177e4 LT |
226 | enum chips type; |
227 | ||
9a61bf63 | 228 | struct mutex update_lock; |
1da177e4 LT |
229 | char valid; /* !=0 if following fields are valid */ |
230 | unsigned long last_updated; /* In jiffies */ | |
231 | ||
232 | u8 in[9]; /* Register value */ | |
3543a53f JD |
233 | u8 in_max[8]; /* Register value */ |
234 | u8 in_min[8]; /* Register value */ | |
9060f8bd | 235 | u8 has_fan; /* Bitfield, fans enabled */ |
17d648bf JD |
236 | u16 fan[3]; /* Register values, possibly combined */ |
237 | u16 fan_min[3]; /* Register values, possibly combined */ | |
1da177e4 LT |
238 | u8 temp[3]; /* Register value */ |
239 | u8 temp_high[3]; /* Register value */ | |
240 | u8 temp_low[3]; /* Register value */ | |
241 | u8 sensor; /* Register value */ | |
242 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
243 | u8 vid; /* Register encoding, combined */ | |
a7be58a1 | 244 | u8 vrm; |
1da177e4 LT |
245 | u32 alarms; /* Register encoding, combined */ |
246 | u8 fan_main_ctrl; /* Register value */ | |
247 | u8 manual_pwm_ctl[3]; /* manual PWM value set by user */ | |
248 | }; | |
249 | ||
250 | ||
251 | static int it87_attach_adapter(struct i2c_adapter *adapter); | |
2d8672c5 | 252 | static int it87_isa_attach_adapter(struct i2c_adapter *adapter); |
1da177e4 LT |
253 | static int it87_detect(struct i2c_adapter *adapter, int address, int kind); |
254 | static int it87_detach_client(struct i2c_client *client); | |
255 | ||
f6c27fc1 DJ |
256 | static int it87_read_value(struct i2c_client *client, u8 reg); |
257 | static int it87_write_value(struct i2c_client *client, u8 reg, u8 value); | |
1da177e4 LT |
258 | static struct it87_data *it87_update_device(struct device *dev); |
259 | static int it87_check_pwm(struct i2c_client *client); | |
260 | static void it87_init_client(struct i2c_client *client, struct it87_data *data); | |
261 | ||
262 | ||
263 | static struct i2c_driver it87_driver = { | |
cdaf7934 | 264 | .driver = { |
cdaf7934 LR |
265 | .name = "it87", |
266 | }, | |
1da177e4 | 267 | .id = I2C_DRIVERID_IT87, |
1da177e4 LT |
268 | .attach_adapter = it87_attach_adapter, |
269 | .detach_client = it87_detach_client, | |
270 | }; | |
271 | ||
fde09509 | 272 | static struct i2c_driver it87_isa_driver = { |
cdaf7934 | 273 | .driver = { |
87218842 | 274 | .owner = THIS_MODULE, |
cdaf7934 LR |
275 | .name = "it87-isa", |
276 | }, | |
2d8672c5 | 277 | .attach_adapter = it87_isa_attach_adapter, |
fde09509 JD |
278 | .detach_client = it87_detach_client, |
279 | }; | |
280 | ||
281 | ||
20ad93d4 JD |
282 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
283 | char *buf) | |
1da177e4 | 284 | { |
20ad93d4 JD |
285 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
286 | int nr = sensor_attr->index; | |
287 | ||
1da177e4 LT |
288 | struct it87_data *data = it87_update_device(dev); |
289 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); | |
290 | } | |
291 | ||
20ad93d4 JD |
292 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, |
293 | char *buf) | |
1da177e4 | 294 | { |
20ad93d4 JD |
295 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
296 | int nr = sensor_attr->index; | |
297 | ||
1da177e4 LT |
298 | struct it87_data *data = it87_update_device(dev); |
299 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); | |
300 | } | |
301 | ||
20ad93d4 JD |
302 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, |
303 | char *buf) | |
1da177e4 | 304 | { |
20ad93d4 JD |
305 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
306 | int nr = sensor_attr->index; | |
307 | ||
1da177e4 LT |
308 | struct it87_data *data = it87_update_device(dev); |
309 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); | |
310 | } | |
311 | ||
20ad93d4 JD |
312 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
313 | const char *buf, size_t count) | |
1da177e4 | 314 | { |
20ad93d4 JD |
315 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
316 | int nr = sensor_attr->index; | |
317 | ||
1da177e4 LT |
318 | struct i2c_client *client = to_i2c_client(dev); |
319 | struct it87_data *data = i2c_get_clientdata(client); | |
320 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
321 | ||
9a61bf63 | 322 | mutex_lock(&data->update_lock); |
1da177e4 LT |
323 | data->in_min[nr] = IN_TO_REG(val); |
324 | it87_write_value(client, IT87_REG_VIN_MIN(nr), | |
325 | data->in_min[nr]); | |
9a61bf63 | 326 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
327 | return count; |
328 | } | |
20ad93d4 JD |
329 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
330 | const char *buf, size_t count) | |
1da177e4 | 331 | { |
20ad93d4 JD |
332 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
333 | int nr = sensor_attr->index; | |
334 | ||
1da177e4 LT |
335 | struct i2c_client *client = to_i2c_client(dev); |
336 | struct it87_data *data = i2c_get_clientdata(client); | |
337 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
338 | ||
9a61bf63 | 339 | mutex_lock(&data->update_lock); |
1da177e4 LT |
340 | data->in_max[nr] = IN_TO_REG(val); |
341 | it87_write_value(client, IT87_REG_VIN_MAX(nr), | |
342 | data->in_max[nr]); | |
9a61bf63 | 343 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
344 | return count; |
345 | } | |
346 | ||
347 | #define show_in_offset(offset) \ | |
20ad93d4 JD |
348 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
349 | show_in, NULL, offset); | |
1da177e4 LT |
350 | |
351 | #define limit_in_offset(offset) \ | |
20ad93d4 JD |
352 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
353 | show_in_min, set_in_min, offset); \ | |
354 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
355 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
356 | |
357 | show_in_offset(0); | |
358 | limit_in_offset(0); | |
359 | show_in_offset(1); | |
360 | limit_in_offset(1); | |
361 | show_in_offset(2); | |
362 | limit_in_offset(2); | |
363 | show_in_offset(3); | |
364 | limit_in_offset(3); | |
365 | show_in_offset(4); | |
366 | limit_in_offset(4); | |
367 | show_in_offset(5); | |
368 | limit_in_offset(5); | |
369 | show_in_offset(6); | |
370 | limit_in_offset(6); | |
371 | show_in_offset(7); | |
372 | limit_in_offset(7); | |
373 | show_in_offset(8); | |
374 | ||
375 | /* 3 temperatures */ | |
20ad93d4 JD |
376 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
377 | char *buf) | |
1da177e4 | 378 | { |
20ad93d4 JD |
379 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
380 | int nr = sensor_attr->index; | |
381 | ||
1da177e4 LT |
382 | struct it87_data *data = it87_update_device(dev); |
383 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
384 | } | |
20ad93d4 JD |
385 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, |
386 | char *buf) | |
1da177e4 | 387 | { |
20ad93d4 JD |
388 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
389 | int nr = sensor_attr->index; | |
390 | ||
1da177e4 LT |
391 | struct it87_data *data = it87_update_device(dev); |
392 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); | |
393 | } | |
20ad93d4 JD |
394 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
395 | char *buf) | |
1da177e4 | 396 | { |
20ad93d4 JD |
397 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
398 | int nr = sensor_attr->index; | |
399 | ||
1da177e4 LT |
400 | struct it87_data *data = it87_update_device(dev); |
401 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); | |
402 | } | |
20ad93d4 JD |
403 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
404 | const char *buf, size_t count) | |
1da177e4 | 405 | { |
20ad93d4 JD |
406 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
407 | int nr = sensor_attr->index; | |
408 | ||
1da177e4 LT |
409 | struct i2c_client *client = to_i2c_client(dev); |
410 | struct it87_data *data = i2c_get_clientdata(client); | |
411 | int val = simple_strtol(buf, NULL, 10); | |
412 | ||
9a61bf63 | 413 | mutex_lock(&data->update_lock); |
1da177e4 LT |
414 | data->temp_high[nr] = TEMP_TO_REG(val); |
415 | it87_write_value(client, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); | |
9a61bf63 | 416 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
417 | return count; |
418 | } | |
20ad93d4 JD |
419 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
420 | const char *buf, size_t count) | |
1da177e4 | 421 | { |
20ad93d4 JD |
422 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
423 | int nr = sensor_attr->index; | |
424 | ||
1da177e4 LT |
425 | struct i2c_client *client = to_i2c_client(dev); |
426 | struct it87_data *data = i2c_get_clientdata(client); | |
427 | int val = simple_strtol(buf, NULL, 10); | |
428 | ||
9a61bf63 | 429 | mutex_lock(&data->update_lock); |
1da177e4 LT |
430 | data->temp_low[nr] = TEMP_TO_REG(val); |
431 | it87_write_value(client, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); | |
9a61bf63 | 432 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
433 | return count; |
434 | } | |
435 | #define show_temp_offset(offset) \ | |
20ad93d4 JD |
436 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
437 | show_temp, NULL, offset - 1); \ | |
438 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
439 | show_temp_max, set_temp_max, offset - 1); \ | |
440 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
441 | show_temp_min, set_temp_min, offset - 1); | |
1da177e4 LT |
442 | |
443 | show_temp_offset(1); | |
444 | show_temp_offset(2); | |
445 | show_temp_offset(3); | |
446 | ||
20ad93d4 JD |
447 | static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, |
448 | char *buf) | |
1da177e4 | 449 | { |
20ad93d4 JD |
450 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
451 | int nr = sensor_attr->index; | |
452 | ||
1da177e4 LT |
453 | struct it87_data *data = it87_update_device(dev); |
454 | u8 reg = data->sensor; /* In case the value is updated while we use it */ | |
455 | ||
456 | if (reg & (1 << nr)) | |
457 | return sprintf(buf, "3\n"); /* thermal diode */ | |
458 | if (reg & (8 << nr)) | |
459 | return sprintf(buf, "2\n"); /* thermistor */ | |
460 | return sprintf(buf, "0\n"); /* disabled */ | |
461 | } | |
20ad93d4 JD |
462 | static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, |
463 | const char *buf, size_t count) | |
1da177e4 | 464 | { |
20ad93d4 JD |
465 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
466 | int nr = sensor_attr->index; | |
467 | ||
1da177e4 LT |
468 | struct i2c_client *client = to_i2c_client(dev); |
469 | struct it87_data *data = i2c_get_clientdata(client); | |
470 | int val = simple_strtol(buf, NULL, 10); | |
471 | ||
9a61bf63 | 472 | mutex_lock(&data->update_lock); |
1da177e4 LT |
473 | |
474 | data->sensor &= ~(1 << nr); | |
475 | data->sensor &= ~(8 << nr); | |
476 | /* 3 = thermal diode; 2 = thermistor; 0 = disabled */ | |
477 | if (val == 3) | |
478 | data->sensor |= 1 << nr; | |
479 | else if (val == 2) | |
480 | data->sensor |= 8 << nr; | |
481 | else if (val != 0) { | |
9a61bf63 | 482 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
483 | return -EINVAL; |
484 | } | |
485 | it87_write_value(client, IT87_REG_TEMP_ENABLE, data->sensor); | |
9a61bf63 | 486 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
487 | return count; |
488 | } | |
489 | #define show_sensor_offset(offset) \ | |
20ad93d4 JD |
490 | static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ |
491 | show_sensor, set_sensor, offset - 1); | |
1da177e4 LT |
492 | |
493 | show_sensor_offset(1); | |
494 | show_sensor_offset(2); | |
495 | show_sensor_offset(3); | |
496 | ||
497 | /* 3 Fans */ | |
20ad93d4 JD |
498 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
499 | char *buf) | |
1da177e4 | 500 | { |
20ad93d4 JD |
501 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
502 | int nr = sensor_attr->index; | |
503 | ||
1da177e4 LT |
504 | struct it87_data *data = it87_update_device(dev); |
505 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr], | |
506 | DIV_FROM_REG(data->fan_div[nr]))); | |
507 | } | |
20ad93d4 JD |
508 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
509 | char *buf) | |
1da177e4 | 510 | { |
20ad93d4 JD |
511 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
512 | int nr = sensor_attr->index; | |
513 | ||
1da177e4 LT |
514 | struct it87_data *data = it87_update_device(dev); |
515 | return sprintf(buf,"%d\n", | |
516 | FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); | |
517 | } | |
20ad93d4 JD |
518 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
519 | char *buf) | |
1da177e4 | 520 | { |
20ad93d4 JD |
521 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
522 | int nr = sensor_attr->index; | |
523 | ||
1da177e4 LT |
524 | struct it87_data *data = it87_update_device(dev); |
525 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
526 | } | |
20ad93d4 JD |
527 | static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, |
528 | char *buf) | |
1da177e4 | 529 | { |
20ad93d4 JD |
530 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
531 | int nr = sensor_attr->index; | |
532 | ||
1da177e4 LT |
533 | struct it87_data *data = it87_update_device(dev); |
534 | return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0); | |
535 | } | |
20ad93d4 JD |
536 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
537 | char *buf) | |
1da177e4 | 538 | { |
20ad93d4 JD |
539 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
540 | int nr = sensor_attr->index; | |
541 | ||
1da177e4 LT |
542 | struct it87_data *data = it87_update_device(dev); |
543 | return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]); | |
544 | } | |
20ad93d4 JD |
545 | static ssize_t set_fan_min(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); | |
553 | int val = simple_strtol(buf, NULL, 10); | |
07eab46d | 554 | u8 reg = it87_read_value(client, IT87_REG_FAN_DIV); |
1da177e4 | 555 | |
9a61bf63 | 556 | mutex_lock(&data->update_lock); |
07eab46d JD |
557 | switch (nr) { |
558 | case 0: data->fan_div[nr] = reg & 0x07; break; | |
559 | case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break; | |
560 | case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break; | |
561 | } | |
562 | ||
1da177e4 LT |
563 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
564 | it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 565 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
566 | return count; |
567 | } | |
20ad93d4 JD |
568 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
569 | const char *buf, size_t count) | |
1da177e4 | 570 | { |
20ad93d4 JD |
571 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
572 | int nr = sensor_attr->index; | |
573 | ||
1da177e4 LT |
574 | struct i2c_client *client = to_i2c_client(dev); |
575 | struct it87_data *data = i2c_get_clientdata(client); | |
b9e349f7 | 576 | unsigned long val = simple_strtoul(buf, NULL, 10); |
8ab4ec3e | 577 | int min; |
1da177e4 LT |
578 | u8 old; |
579 | ||
9a61bf63 | 580 | mutex_lock(&data->update_lock); |
1da177e4 LT |
581 | old = it87_read_value(client, IT87_REG_FAN_DIV); |
582 | ||
8ab4ec3e JD |
583 | /* Save fan min limit */ |
584 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); | |
1da177e4 LT |
585 | |
586 | switch (nr) { | |
587 | case 0: | |
588 | case 1: | |
589 | data->fan_div[nr] = DIV_TO_REG(val); | |
590 | break; | |
591 | case 2: | |
592 | if (val < 8) | |
593 | data->fan_div[nr] = 1; | |
594 | else | |
595 | data->fan_div[nr] = 3; | |
596 | } | |
597 | val = old & 0x80; | |
598 | val |= (data->fan_div[0] & 0x07); | |
599 | val |= (data->fan_div[1] & 0x07) << 3; | |
600 | if (data->fan_div[2] == 3) | |
601 | val |= 0x1 << 6; | |
602 | it87_write_value(client, IT87_REG_FAN_DIV, val); | |
603 | ||
8ab4ec3e JD |
604 | /* Restore fan min limit */ |
605 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
606 | it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
607 | ||
9a61bf63 | 608 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
609 | return count; |
610 | } | |
20ad93d4 JD |
611 | static ssize_t set_pwm_enable(struct device *dev, |
612 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 613 | { |
20ad93d4 JD |
614 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
615 | int nr = sensor_attr->index; | |
616 | ||
1da177e4 LT |
617 | struct i2c_client *client = to_i2c_client(dev); |
618 | struct it87_data *data = i2c_get_clientdata(client); | |
619 | int val = simple_strtol(buf, NULL, 10); | |
620 | ||
9a61bf63 | 621 | mutex_lock(&data->update_lock); |
1da177e4 LT |
622 | |
623 | if (val == 0) { | |
624 | int tmp; | |
625 | /* make sure the fan is on when in on/off mode */ | |
626 | tmp = it87_read_value(client, IT87_REG_FAN_CTL); | |
627 | it87_write_value(client, IT87_REG_FAN_CTL, tmp | (1 << nr)); | |
628 | /* set on/off mode */ | |
629 | data->fan_main_ctrl &= ~(1 << nr); | |
630 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
631 | } else if (val == 1) { | |
632 | /* set SmartGuardian mode */ | |
633 | data->fan_main_ctrl |= (1 << nr); | |
634 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
635 | /* set saved pwm value, clear FAN_CTLX PWM mode bit */ | |
636 | it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); | |
637 | } else { | |
9a61bf63 | 638 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
639 | return -EINVAL; |
640 | } | |
641 | ||
9a61bf63 | 642 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
643 | return count; |
644 | } | |
20ad93d4 JD |
645 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
646 | const char *buf, size_t count) | |
1da177e4 | 647 | { |
20ad93d4 JD |
648 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
649 | int nr = sensor_attr->index; | |
650 | ||
1da177e4 LT |
651 | struct i2c_client *client = to_i2c_client(dev); |
652 | struct it87_data *data = i2c_get_clientdata(client); | |
653 | int val = simple_strtol(buf, NULL, 10); | |
654 | ||
655 | if (val < 0 || val > 255) | |
656 | return -EINVAL; | |
657 | ||
9a61bf63 | 658 | mutex_lock(&data->update_lock); |
1da177e4 LT |
659 | data->manual_pwm_ctl[nr] = val; |
660 | if (data->fan_main_ctrl & (1 << nr)) | |
661 | it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); | |
9a61bf63 | 662 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
663 | return count; |
664 | } | |
665 | ||
20ad93d4 JD |
666 | #define show_fan_offset(offset) \ |
667 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
668 | show_fan, NULL, offset - 1); \ | |
669 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
670 | show_fan_min, set_fan_min, offset - 1); \ | |
671 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
672 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
673 | |
674 | show_fan_offset(1); | |
675 | show_fan_offset(2); | |
676 | show_fan_offset(3); | |
677 | ||
678 | #define show_pwm_offset(offset) \ | |
20ad93d4 JD |
679 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
680 | show_pwm_enable, set_pwm_enable, offset - 1); \ | |
681 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ | |
682 | show_pwm, set_pwm, offset - 1); | |
1da177e4 LT |
683 | |
684 | show_pwm_offset(1); | |
685 | show_pwm_offset(2); | |
686 | show_pwm_offset(3); | |
687 | ||
17d648bf JD |
688 | /* A different set of callbacks for 16-bit fans */ |
689 | static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, | |
690 | char *buf) | |
691 | { | |
692 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
693 | int nr = sensor_attr->index; | |
694 | struct it87_data *data = it87_update_device(dev); | |
695 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); | |
696 | } | |
697 | ||
698 | static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, | |
699 | char *buf) | |
700 | { | |
701 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
702 | int nr = sensor_attr->index; | |
703 | struct it87_data *data = it87_update_device(dev); | |
704 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); | |
705 | } | |
706 | ||
707 | static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, | |
708 | const char *buf, size_t count) | |
709 | { | |
710 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
711 | int nr = sensor_attr->index; | |
712 | struct i2c_client *client = to_i2c_client(dev); | |
713 | struct it87_data *data = i2c_get_clientdata(client); | |
714 | int val = simple_strtol(buf, NULL, 10); | |
715 | ||
716 | mutex_lock(&data->update_lock); | |
717 | data->fan_min[nr] = FAN16_TO_REG(val); | |
718 | it87_write_value(client, IT87_REG_FAN_MIN(nr), | |
719 | data->fan_min[nr] & 0xff); | |
720 | it87_write_value(client, IT87_REG_FANX_MIN(nr), | |
721 | data->fan_min[nr] >> 8); | |
722 | mutex_unlock(&data->update_lock); | |
723 | return count; | |
724 | } | |
725 | ||
726 | /* We want to use the same sysfs file names as 8-bit fans, but we need | |
727 | different variable names, so we have to use SENSOR_ATTR instead of | |
728 | SENSOR_DEVICE_ATTR. */ | |
729 | #define show_fan16_offset(offset) \ | |
730 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ | |
731 | = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ | |
732 | show_fan16, NULL, offset - 1); \ | |
733 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ | |
734 | = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
735 | show_fan16_min, set_fan16_min, offset - 1) | |
736 | ||
737 | show_fan16_offset(1); | |
738 | show_fan16_offset(2); | |
739 | show_fan16_offset(3); | |
740 | ||
1da177e4 | 741 | /* Alarms */ |
30f74292 | 742 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
743 | { |
744 | struct it87_data *data = it87_update_device(dev); | |
68188ba7 | 745 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 | 746 | } |
1d66c64c | 747 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4 LT |
748 | |
749 | static ssize_t | |
30f74292 | 750 | show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
751 | { |
752 | struct it87_data *data = it87_update_device(dev); | |
a7be58a1 | 753 | return sprintf(buf, "%u\n", data->vrm); |
1da177e4 LT |
754 | } |
755 | static ssize_t | |
30f74292 | 756 | store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
757 | { |
758 | struct i2c_client *client = to_i2c_client(dev); | |
759 | struct it87_data *data = i2c_get_clientdata(client); | |
760 | u32 val; | |
761 | ||
762 | val = simple_strtoul(buf, NULL, 10); | |
763 | data->vrm = val; | |
764 | ||
765 | return count; | |
766 | } | |
767 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
768 | #define device_create_file_vrm(client) \ | |
769 | device_create_file(&client->dev, &dev_attr_vrm) | |
770 | ||
771 | static ssize_t | |
30f74292 | 772 | show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
773 | { |
774 | struct it87_data *data = it87_update_device(dev); | |
775 | return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); | |
776 | } | |
777 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
778 | #define device_create_file_vid(client) \ | |
779 | device_create_file(&client->dev, &dev_attr_cpu0_vid) | |
780 | ||
781 | /* This function is called when: | |
782 | * it87_driver is inserted (when this module is loaded), for each | |
783 | available adapter | |
784 | * when a new adapter is inserted (and it87_driver is still present) */ | |
785 | static int it87_attach_adapter(struct i2c_adapter *adapter) | |
786 | { | |
787 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
788 | return 0; | |
2ed2dc3c | 789 | return i2c_probe(adapter, &addr_data, it87_detect); |
1da177e4 LT |
790 | } |
791 | ||
2d8672c5 JD |
792 | static int it87_isa_attach_adapter(struct i2c_adapter *adapter) |
793 | { | |
794 | return it87_detect(adapter, isa_address, -1); | |
795 | } | |
796 | ||
797 | /* SuperIO detection - will change isa_address if a chip is found */ | |
91749996 | 798 | static int __init it87_find(unsigned short *address) |
1da177e4 LT |
799 | { |
800 | int err = -ENODEV; | |
801 | ||
802 | superio_enter(); | |
803 | chip_type = superio_inw(DEVID); | |
804 | if (chip_type != IT8712F_DEVID | |
17d648bf | 805 | && chip_type != IT8716F_DEVID |
87673dd7 | 806 | && chip_type != IT8718F_DEVID |
1da177e4 LT |
807 | && chip_type != IT8705F_DEVID) |
808 | goto exit; | |
809 | ||
87673dd7 | 810 | superio_select(PME); |
1da177e4 LT |
811 | if (!(superio_inb(IT87_ACT_REG) & 0x01)) { |
812 | pr_info("it87: Device not activated, skipping\n"); | |
813 | goto exit; | |
814 | } | |
815 | ||
816 | *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); | |
817 | if (*address == 0) { | |
818 | pr_info("it87: Base address not set, skipping\n"); | |
819 | goto exit; | |
820 | } | |
821 | ||
822 | err = 0; | |
823 | pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", | |
824 | chip_type, *address, superio_inb(DEVREV) & 0x0f); | |
825 | ||
87673dd7 JD |
826 | /* Read GPIO config and VID value from LDN 7 (GPIO) */ |
827 | if (chip_type != IT8705F_DEVID) { | |
828 | int reg; | |
829 | ||
830 | superio_select(GPIO); | |
831 | if (chip_type == it8718) | |
832 | vid_value = superio_inb(IT87_SIO_VID_REG); | |
833 | ||
834 | reg = superio_inb(IT87_SIO_PINX2_REG); | |
835 | if (reg & (1 << 0)) | |
836 | pr_info("it87: in3 is VCC (+5V)\n"); | |
837 | if (reg & (1 << 1)) | |
838 | pr_info("it87: in7 is VCCH (+5V Stand-By)\n"); | |
839 | } | |
840 | ||
1da177e4 LT |
841 | exit: |
842 | superio_exit(); | |
843 | return err; | |
844 | } | |
845 | ||
2ed2dc3c | 846 | /* This function is called by i2c_probe */ |
c49efcef | 847 | static int it87_detect(struct i2c_adapter *adapter, int address, int kind) |
1da177e4 LT |
848 | { |
849 | int i; | |
850 | struct i2c_client *new_client; | |
851 | struct it87_data *data; | |
852 | int err = 0; | |
853 | const char *name = ""; | |
854 | int is_isa = i2c_is_isa_adapter(adapter); | |
855 | int enable_pwm_interface; | |
856 | ||
857 | if (!is_isa && | |
858 | !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
859 | goto ERROR0; | |
860 | ||
861 | /* Reserve the ISA region */ | |
862 | if (is_isa) | |
cdaf7934 LR |
863 | if (!request_region(address, IT87_EXTENT, |
864 | it87_isa_driver.driver.name)) | |
1da177e4 LT |
865 | goto ERROR0; |
866 | ||
91749996 | 867 | /* For now, we presume we have a valid client. We create the |
1da177e4 LT |
868 | client structure, even though we cannot fill it completely yet. |
869 | But it allows us to access it87_{read,write}_value. */ | |
870 | ||
ba9c2e8d | 871 | if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { |
1da177e4 LT |
872 | err = -ENOMEM; |
873 | goto ERROR1; | |
874 | } | |
1da177e4 LT |
875 | |
876 | new_client = &data->client; | |
877 | if (is_isa) | |
9a61bf63 | 878 | mutex_init(&data->lock); |
1da177e4 LT |
879 | i2c_set_clientdata(new_client, data); |
880 | new_client->addr = address; | |
881 | new_client->adapter = adapter; | |
fde09509 | 882 | new_client->driver = is_isa ? &it87_isa_driver : &it87_driver; |
1da177e4 LT |
883 | new_client->flags = 0; |
884 | ||
885 | /* Now, we do the remaining detection. */ | |
886 | ||
887 | if (kind < 0) { | |
888 | if ((it87_read_value(new_client, IT87_REG_CONFIG) & 0x80) | |
889 | || (!is_isa | |
890 | && it87_read_value(new_client, IT87_REG_I2C_ADDR) != address)) { | |
891 | err = -ENODEV; | |
892 | goto ERROR2; | |
893 | } | |
894 | } | |
895 | ||
896 | /* Determine the chip type. */ | |
897 | if (kind <= 0) { | |
898 | i = it87_read_value(new_client, IT87_REG_CHIPID); | |
899 | if (i == 0x90) { | |
900 | kind = it87; | |
17d648bf JD |
901 | if (is_isa) { |
902 | switch (chip_type) { | |
903 | case IT8712F_DEVID: | |
904 | kind = it8712; | |
905 | break; | |
906 | case IT8716F_DEVID: | |
907 | kind = it8716; | |
908 | break; | |
87673dd7 JD |
909 | case IT8718F_DEVID: |
910 | kind = it8718; | |
911 | break; | |
17d648bf JD |
912 | } |
913 | } | |
1da177e4 LT |
914 | } |
915 | else { | |
916 | if (kind == 0) | |
917 | dev_info(&adapter->dev, | |
918 | "Ignoring 'force' parameter for unknown chip at " | |
919 | "adapter %d, address 0x%02x\n", | |
920 | i2c_adapter_id(adapter), address); | |
921 | err = -ENODEV; | |
922 | goto ERROR2; | |
923 | } | |
924 | } | |
925 | ||
926 | if (kind == it87) { | |
927 | name = "it87"; | |
928 | } else if (kind == it8712) { | |
929 | name = "it8712"; | |
17d648bf JD |
930 | } else if (kind == it8716) { |
931 | name = "it8716"; | |
87673dd7 JD |
932 | } else if (kind == it8718) { |
933 | name = "it8718"; | |
1da177e4 LT |
934 | } |
935 | ||
936 | /* Fill in the remaining client fields and put it into the global list */ | |
937 | strlcpy(new_client->name, name, I2C_NAME_SIZE); | |
938 | data->type = kind; | |
939 | data->valid = 0; | |
9a61bf63 | 940 | mutex_init(&data->update_lock); |
1da177e4 LT |
941 | |
942 | /* Tell the I2C layer a new client has arrived */ | |
943 | if ((err = i2c_attach_client(new_client))) | |
944 | goto ERROR2; | |
945 | ||
c5e3fbf2 JD |
946 | if (!is_isa) |
947 | dev_info(&new_client->dev, "The I2C interface to IT87xxF " | |
948 | "hardware monitoring chips is deprecated. Please " | |
949 | "report if you still rely on it.\n"); | |
950 | ||
1da177e4 LT |
951 | /* Check PWM configuration */ |
952 | enable_pwm_interface = it87_check_pwm(new_client); | |
953 | ||
954 | /* Initialize the IT87 chip */ | |
955 | it87_init_client(new_client, data); | |
956 | ||
957 | /* Register sysfs hooks */ | |
943b0830 MH |
958 | data->class_dev = hwmon_device_register(&new_client->dev); |
959 | if (IS_ERR(data->class_dev)) { | |
960 | err = PTR_ERR(data->class_dev); | |
961 | goto ERROR3; | |
962 | } | |
963 | ||
20ad93d4 JD |
964 | device_create_file(&new_client->dev, &sensor_dev_attr_in0_input.dev_attr); |
965 | device_create_file(&new_client->dev, &sensor_dev_attr_in1_input.dev_attr); | |
966 | device_create_file(&new_client->dev, &sensor_dev_attr_in2_input.dev_attr); | |
967 | device_create_file(&new_client->dev, &sensor_dev_attr_in3_input.dev_attr); | |
968 | device_create_file(&new_client->dev, &sensor_dev_attr_in4_input.dev_attr); | |
969 | device_create_file(&new_client->dev, &sensor_dev_attr_in5_input.dev_attr); | |
970 | device_create_file(&new_client->dev, &sensor_dev_attr_in6_input.dev_attr); | |
971 | device_create_file(&new_client->dev, &sensor_dev_attr_in7_input.dev_attr); | |
972 | device_create_file(&new_client->dev, &sensor_dev_attr_in8_input.dev_attr); | |
973 | device_create_file(&new_client->dev, &sensor_dev_attr_in0_min.dev_attr); | |
974 | device_create_file(&new_client->dev, &sensor_dev_attr_in1_min.dev_attr); | |
975 | device_create_file(&new_client->dev, &sensor_dev_attr_in2_min.dev_attr); | |
976 | device_create_file(&new_client->dev, &sensor_dev_attr_in3_min.dev_attr); | |
977 | device_create_file(&new_client->dev, &sensor_dev_attr_in4_min.dev_attr); | |
978 | device_create_file(&new_client->dev, &sensor_dev_attr_in5_min.dev_attr); | |
979 | device_create_file(&new_client->dev, &sensor_dev_attr_in6_min.dev_attr); | |
980 | device_create_file(&new_client->dev, &sensor_dev_attr_in7_min.dev_attr); | |
981 | device_create_file(&new_client->dev, &sensor_dev_attr_in0_max.dev_attr); | |
982 | device_create_file(&new_client->dev, &sensor_dev_attr_in1_max.dev_attr); | |
983 | device_create_file(&new_client->dev, &sensor_dev_attr_in2_max.dev_attr); | |
984 | device_create_file(&new_client->dev, &sensor_dev_attr_in3_max.dev_attr); | |
985 | device_create_file(&new_client->dev, &sensor_dev_attr_in4_max.dev_attr); | |
986 | device_create_file(&new_client->dev, &sensor_dev_attr_in5_max.dev_attr); | |
987 | device_create_file(&new_client->dev, &sensor_dev_attr_in6_max.dev_attr); | |
988 | device_create_file(&new_client->dev, &sensor_dev_attr_in7_max.dev_attr); | |
989 | device_create_file(&new_client->dev, &sensor_dev_attr_temp1_input.dev_attr); | |
990 | device_create_file(&new_client->dev, &sensor_dev_attr_temp2_input.dev_attr); | |
991 | device_create_file(&new_client->dev, &sensor_dev_attr_temp3_input.dev_attr); | |
992 | device_create_file(&new_client->dev, &sensor_dev_attr_temp1_max.dev_attr); | |
993 | device_create_file(&new_client->dev, &sensor_dev_attr_temp2_max.dev_attr); | |
994 | device_create_file(&new_client->dev, &sensor_dev_attr_temp3_max.dev_attr); | |
995 | device_create_file(&new_client->dev, &sensor_dev_attr_temp1_min.dev_attr); | |
996 | device_create_file(&new_client->dev, &sensor_dev_attr_temp2_min.dev_attr); | |
997 | device_create_file(&new_client->dev, &sensor_dev_attr_temp3_min.dev_attr); | |
998 | device_create_file(&new_client->dev, &sensor_dev_attr_temp1_type.dev_attr); | |
999 | device_create_file(&new_client->dev, &sensor_dev_attr_temp2_type.dev_attr); | |
1000 | device_create_file(&new_client->dev, &sensor_dev_attr_temp3_type.dev_attr); | |
17d648bf | 1001 | |
9060f8bd | 1002 | /* Do not create fan files for disabled fans */ |
87673dd7 JD |
1003 | if (data->type == it8716 || data->type == it8718) { |
1004 | /* 16-bit tachometers */ | |
9060f8bd JD |
1005 | if (data->has_fan & (1 << 0)) { |
1006 | device_create_file(&new_client->dev, | |
1007 | &sensor_dev_attr_fan1_input16.dev_attr); | |
1008 | device_create_file(&new_client->dev, | |
1009 | &sensor_dev_attr_fan1_min16.dev_attr); | |
1010 | } | |
1011 | if (data->has_fan & (1 << 1)) { | |
1012 | device_create_file(&new_client->dev, | |
1013 | &sensor_dev_attr_fan2_input16.dev_attr); | |
1014 | device_create_file(&new_client->dev, | |
1015 | &sensor_dev_attr_fan2_min16.dev_attr); | |
1016 | } | |
1017 | if (data->has_fan & (1 << 2)) { | |
1018 | device_create_file(&new_client->dev, | |
1019 | &sensor_dev_attr_fan3_input16.dev_attr); | |
1020 | device_create_file(&new_client->dev, | |
1021 | &sensor_dev_attr_fan3_min16.dev_attr); | |
1022 | } | |
17d648bf | 1023 | } else { |
87673dd7 | 1024 | /* 8-bit tachometers with clock divider */ |
9060f8bd JD |
1025 | if (data->has_fan & (1 << 0)) { |
1026 | device_create_file(&new_client->dev, | |
1027 | &sensor_dev_attr_fan1_input.dev_attr); | |
1028 | device_create_file(&new_client->dev, | |
1029 | &sensor_dev_attr_fan1_min.dev_attr); | |
1030 | device_create_file(&new_client->dev, | |
1031 | &sensor_dev_attr_fan1_div.dev_attr); | |
1032 | } | |
1033 | if (data->has_fan & (1 << 1)) { | |
1034 | device_create_file(&new_client->dev, | |
1035 | &sensor_dev_attr_fan2_input.dev_attr); | |
1036 | device_create_file(&new_client->dev, | |
1037 | &sensor_dev_attr_fan2_min.dev_attr); | |
1038 | device_create_file(&new_client->dev, | |
1039 | &sensor_dev_attr_fan2_div.dev_attr); | |
1040 | } | |
1041 | if (data->has_fan & (1 << 2)) { | |
1042 | device_create_file(&new_client->dev, | |
1043 | &sensor_dev_attr_fan3_input.dev_attr); | |
1044 | device_create_file(&new_client->dev, | |
1045 | &sensor_dev_attr_fan3_min.dev_attr); | |
1046 | device_create_file(&new_client->dev, | |
1047 | &sensor_dev_attr_fan3_div.dev_attr); | |
1048 | } | |
17d648bf JD |
1049 | } |
1050 | ||
1da177e4 LT |
1051 | device_create_file(&new_client->dev, &dev_attr_alarms); |
1052 | if (enable_pwm_interface) { | |
20ad93d4 JD |
1053 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm1_enable.dev_attr); |
1054 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm2_enable.dev_attr); | |
1055 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm3_enable.dev_attr); | |
1056 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm1.dev_attr); | |
1057 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm2.dev_attr); | |
1058 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm3.dev_attr); | |
1da177e4 LT |
1059 | } |
1060 | ||
87673dd7 JD |
1061 | if (data->type == it8712 || data->type == it8716 |
1062 | || data->type == it8718) { | |
303760b4 | 1063 | data->vrm = vid_which_vrm(); |
87673dd7 JD |
1064 | /* VID reading from Super-I/O config space if available */ |
1065 | data->vid = vid_value; | |
1da177e4 LT |
1066 | device_create_file_vrm(new_client); |
1067 | device_create_file_vid(new_client); | |
1068 | } | |
1069 | ||
1070 | return 0; | |
1071 | ||
943b0830 MH |
1072 | ERROR3: |
1073 | i2c_detach_client(new_client); | |
1da177e4 LT |
1074 | ERROR2: |
1075 | kfree(data); | |
1076 | ERROR1: | |
1077 | if (is_isa) | |
1078 | release_region(address, IT87_EXTENT); | |
1079 | ERROR0: | |
1080 | return err; | |
1081 | } | |
1082 | ||
1083 | static int it87_detach_client(struct i2c_client *client) | |
1084 | { | |
943b0830 | 1085 | struct it87_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
1086 | int err; |
1087 | ||
943b0830 MH |
1088 | hwmon_device_unregister(data->class_dev); |
1089 | ||
7bef5594 | 1090 | if ((err = i2c_detach_client(client))) |
1da177e4 | 1091 | return err; |
1da177e4 LT |
1092 | |
1093 | if(i2c_is_isa_client(client)) | |
1094 | release_region(client->addr, IT87_EXTENT); | |
943b0830 | 1095 | kfree(data); |
1da177e4 LT |
1096 | |
1097 | return 0; | |
1098 | } | |
1099 | ||
44bbe87e | 1100 | /* The SMBus locks itself, but ISA access must be locked explicitly! |
1da177e4 LT |
1101 | We don't want to lock the whole ISA bus, so we lock each client |
1102 | separately. | |
1103 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, | |
1104 | would slow down the IT87 access and should not be necessary. */ | |
1105 | static int it87_read_value(struct i2c_client *client, u8 reg) | |
1106 | { | |
1107 | struct it87_data *data = i2c_get_clientdata(client); | |
1108 | ||
1109 | int res; | |
1110 | if (i2c_is_isa_client(client)) { | |
9a61bf63 | 1111 | mutex_lock(&data->lock); |
1da177e4 LT |
1112 | outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); |
1113 | res = inb_p(client->addr + IT87_DATA_REG_OFFSET); | |
9a61bf63 | 1114 | mutex_unlock(&data->lock); |
1da177e4 LT |
1115 | return res; |
1116 | } else | |
1117 | return i2c_smbus_read_byte_data(client, reg); | |
1118 | } | |
1119 | ||
44bbe87e | 1120 | /* The SMBus locks itself, but ISA access muse be locked explicitly! |
1da177e4 LT |
1121 | We don't want to lock the whole ISA bus, so we lock each client |
1122 | separately. | |
1123 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, | |
1124 | would slow down the IT87 access and should not be necessary. */ | |
1125 | static int it87_write_value(struct i2c_client *client, u8 reg, u8 value) | |
1126 | { | |
1127 | struct it87_data *data = i2c_get_clientdata(client); | |
1128 | ||
1129 | if (i2c_is_isa_client(client)) { | |
9a61bf63 | 1130 | mutex_lock(&data->lock); |
1da177e4 LT |
1131 | outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); |
1132 | outb_p(value, client->addr + IT87_DATA_REG_OFFSET); | |
9a61bf63 | 1133 | mutex_unlock(&data->lock); |
1da177e4 LT |
1134 | return 0; |
1135 | } else | |
1136 | return i2c_smbus_write_byte_data(client, reg, value); | |
1137 | } | |
1138 | ||
1139 | /* Return 1 if and only if the PWM interface is safe to use */ | |
1140 | static int it87_check_pwm(struct i2c_client *client) | |
1141 | { | |
1142 | /* Some BIOSes fail to correctly configure the IT87 fans. All fans off | |
1143 | * and polarity set to active low is sign that this is the case so we | |
1144 | * disable pwm control to protect the user. */ | |
1145 | int tmp = it87_read_value(client, IT87_REG_FAN_CTL); | |
1146 | if ((tmp & 0x87) == 0) { | |
1147 | if (fix_pwm_polarity) { | |
1148 | /* The user asks us to attempt a chip reconfiguration. | |
1149 | * This means switching to active high polarity and | |
1150 | * inverting all fan speed values. */ | |
1151 | int i; | |
1152 | u8 pwm[3]; | |
1153 | ||
1154 | for (i = 0; i < 3; i++) | |
1155 | pwm[i] = it87_read_value(client, | |
1156 | IT87_REG_PWM(i)); | |
1157 | ||
1158 | /* If any fan is in automatic pwm mode, the polarity | |
1159 | * might be correct, as suspicious as it seems, so we | |
1160 | * better don't change anything (but still disable the | |
1161 | * PWM interface). */ | |
1162 | if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { | |
1163 | dev_info(&client->dev, "Reconfiguring PWM to " | |
1164 | "active high polarity\n"); | |
1165 | it87_write_value(client, IT87_REG_FAN_CTL, | |
1166 | tmp | 0x87); | |
1167 | for (i = 0; i < 3; i++) | |
1168 | it87_write_value(client, | |
1169 | IT87_REG_PWM(i), | |
1170 | 0x7f & ~pwm[i]); | |
1171 | return 1; | |
1172 | } | |
1173 | ||
1174 | dev_info(&client->dev, "PWM configuration is " | |
1175 | "too broken to be fixed\n"); | |
1176 | } | |
1177 | ||
1178 | dev_info(&client->dev, "Detected broken BIOS " | |
1179 | "defaults, disabling PWM interface\n"); | |
1180 | return 0; | |
1181 | } else if (fix_pwm_polarity) { | |
1182 | dev_info(&client->dev, "PWM configuration looks " | |
1183 | "sane, won't touch\n"); | |
1184 | } | |
1185 | ||
1186 | return 1; | |
1187 | } | |
1188 | ||
1189 | /* Called when we have found a new IT87. */ | |
1190 | static void it87_init_client(struct i2c_client *client, struct it87_data *data) | |
1191 | { | |
1192 | int tmp, i; | |
1193 | ||
1194 | /* initialize to sane defaults: | |
1195 | * - if the chip is in manual pwm mode, this will be overwritten with | |
1196 | * the actual settings on the chip (so in this case, initialization | |
1197 | * is not needed) | |
1198 | * - if in automatic or on/off mode, we could switch to manual mode, | |
1199 | * read the registers and set manual_pwm_ctl accordingly, but currently | |
1200 | * this is not implemented, so we initialize to something sane */ | |
1201 | for (i = 0; i < 3; i++) { | |
1202 | data->manual_pwm_ctl[i] = 0xff; | |
1203 | } | |
1204 | ||
c5df9b7a JD |
1205 | /* Some chips seem to have default value 0xff for all limit |
1206 | * registers. For low voltage limits it makes no sense and triggers | |
1207 | * alarms, so change to 0 instead. For high temperature limits, it | |
1208 | * means -1 degree C, which surprisingly doesn't trigger an alarm, | |
1209 | * but is still confusing, so change to 127 degrees C. */ | |
1210 | for (i = 0; i < 8; i++) { | |
1211 | tmp = it87_read_value(client, IT87_REG_VIN_MIN(i)); | |
1212 | if (tmp == 0xff) | |
1213 | it87_write_value(client, IT87_REG_VIN_MIN(i), 0); | |
1214 | } | |
1215 | for (i = 0; i < 3; i++) { | |
1216 | tmp = it87_read_value(client, IT87_REG_TEMP_HIGH(i)); | |
1217 | if (tmp == 0xff) | |
1218 | it87_write_value(client, IT87_REG_TEMP_HIGH(i), 127); | |
1219 | } | |
1220 | ||
1da177e4 LT |
1221 | /* Check if temperature channnels are reset manually or by some reason */ |
1222 | tmp = it87_read_value(client, IT87_REG_TEMP_ENABLE); | |
1223 | if ((tmp & 0x3f) == 0) { | |
1224 | /* Temp1,Temp3=thermistor; Temp2=thermal diode */ | |
1225 | tmp = (tmp & 0xc0) | 0x2a; | |
1226 | it87_write_value(client, IT87_REG_TEMP_ENABLE, tmp); | |
1227 | } | |
1228 | data->sensor = tmp; | |
1229 | ||
1230 | /* Check if voltage monitors are reset manually or by some reason */ | |
1231 | tmp = it87_read_value(client, IT87_REG_VIN_ENABLE); | |
1232 | if ((tmp & 0xff) == 0) { | |
1233 | /* Enable all voltage monitors */ | |
1234 | it87_write_value(client, IT87_REG_VIN_ENABLE, 0xff); | |
1235 | } | |
1236 | ||
1237 | /* Check if tachometers are reset manually or by some reason */ | |
1238 | data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL); | |
1239 | if ((data->fan_main_ctrl & 0x70) == 0) { | |
1240 | /* Enable all fan tachometers */ | |
1241 | data->fan_main_ctrl |= 0x70; | |
1242 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
1243 | } | |
9060f8bd | 1244 | data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; |
1da177e4 | 1245 | |
17d648bf | 1246 | /* Set tachometers to 16-bit mode if needed */ |
87673dd7 | 1247 | if (data->type == it8716 || data->type == it8718) { |
17d648bf | 1248 | tmp = it87_read_value(client, IT87_REG_FAN_16BIT); |
9060f8bd | 1249 | if (~tmp & 0x07 & data->has_fan) { |
17d648bf JD |
1250 | dev_dbg(&client->dev, |
1251 | "Setting fan1-3 to 16-bit mode\n"); | |
1252 | it87_write_value(client, IT87_REG_FAN_16BIT, | |
1253 | tmp | 0x07); | |
1254 | } | |
1255 | } | |
1256 | ||
1da177e4 LT |
1257 | /* Set current fan mode registers and the default settings for the |
1258 | * other mode registers */ | |
1259 | for (i = 0; i < 3; i++) { | |
1260 | if (data->fan_main_ctrl & (1 << i)) { | |
1261 | /* pwm mode */ | |
1262 | tmp = it87_read_value(client, IT87_REG_PWM(i)); | |
1263 | if (tmp & 0x80) { | |
1264 | /* automatic pwm - not yet implemented, but | |
1265 | * leave the settings made by the BIOS alone | |
1266 | * until a change is requested via the sysfs | |
1267 | * interface */ | |
1268 | } else { | |
1269 | /* manual pwm */ | |
1270 | data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp); | |
1271 | } | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | /* Start monitoring */ | |
1276 | it87_write_value(client, IT87_REG_CONFIG, | |
1277 | (it87_read_value(client, IT87_REG_CONFIG) & 0x36) | |
1278 | | (update_vbat ? 0x41 : 0x01)); | |
1279 | } | |
1280 | ||
1281 | static struct it87_data *it87_update_device(struct device *dev) | |
1282 | { | |
1283 | struct i2c_client *client = to_i2c_client(dev); | |
1284 | struct it87_data *data = i2c_get_clientdata(client); | |
1285 | int i; | |
1286 | ||
9a61bf63 | 1287 | mutex_lock(&data->update_lock); |
1da177e4 LT |
1288 | |
1289 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
1290 | || !data->valid) { | |
1291 | ||
1292 | if (update_vbat) { | |
1293 | /* Cleared after each update, so reenable. Value | |
1294 | returned by this read will be previous value */ | |
1295 | it87_write_value(client, IT87_REG_CONFIG, | |
1296 | it87_read_value(client, IT87_REG_CONFIG) | 0x40); | |
1297 | } | |
1298 | for (i = 0; i <= 7; i++) { | |
1299 | data->in[i] = | |
1300 | it87_read_value(client, IT87_REG_VIN(i)); | |
1301 | data->in_min[i] = | |
1302 | it87_read_value(client, IT87_REG_VIN_MIN(i)); | |
1303 | data->in_max[i] = | |
1304 | it87_read_value(client, IT87_REG_VIN_MAX(i)); | |
1305 | } | |
3543a53f | 1306 | /* in8 (battery) has no limit registers */ |
1da177e4 LT |
1307 | data->in[8] = |
1308 | it87_read_value(client, IT87_REG_VIN(8)); | |
1da177e4 LT |
1309 | |
1310 | for (i = 0; i < 3; i++) { | |
9060f8bd JD |
1311 | /* Skip disabled fans */ |
1312 | if (!(data->has_fan & (1 << i))) | |
1313 | continue; | |
1314 | ||
1da177e4 LT |
1315 | data->fan_min[i] = |
1316 | it87_read_value(client, IT87_REG_FAN_MIN(i)); | |
17d648bf JD |
1317 | data->fan[i] = it87_read_value(client, |
1318 | IT87_REG_FAN(i)); | |
1319 | /* Add high byte if in 16-bit mode */ | |
87673dd7 | 1320 | if (data->type == it8716 || data->type == it8718) { |
17d648bf JD |
1321 | data->fan[i] |= it87_read_value(client, |
1322 | IT87_REG_FANX(i)) << 8; | |
1323 | data->fan_min[i] |= it87_read_value(client, | |
1324 | IT87_REG_FANX_MIN(i)) << 8; | |
1325 | } | |
1da177e4 LT |
1326 | } |
1327 | for (i = 0; i < 3; i++) { | |
1328 | data->temp[i] = | |
1329 | it87_read_value(client, IT87_REG_TEMP(i)); | |
1330 | data->temp_high[i] = | |
1331 | it87_read_value(client, IT87_REG_TEMP_HIGH(i)); | |
1332 | data->temp_low[i] = | |
1333 | it87_read_value(client, IT87_REG_TEMP_LOW(i)); | |
1334 | } | |
1335 | ||
17d648bf | 1336 | /* Newer chips don't have clock dividers */ |
87673dd7 JD |
1337 | if ((data->has_fan & 0x07) && data->type != it8716 |
1338 | && data->type != it8718) { | |
17d648bf JD |
1339 | i = it87_read_value(client, IT87_REG_FAN_DIV); |
1340 | data->fan_div[0] = i & 0x07; | |
1341 | data->fan_div[1] = (i >> 3) & 0x07; | |
1342 | data->fan_div[2] = (i & 0x40) ? 3 : 1; | |
1343 | } | |
1da177e4 LT |
1344 | |
1345 | data->alarms = | |
1346 | it87_read_value(client, IT87_REG_ALARM1) | | |
1347 | (it87_read_value(client, IT87_REG_ALARM2) << 8) | | |
1348 | (it87_read_value(client, IT87_REG_ALARM3) << 16); | |
1349 | data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL); | |
1350 | ||
1351 | data->sensor = it87_read_value(client, IT87_REG_TEMP_ENABLE); | |
1352 | /* The 8705 does not have VID capability */ | |
17d648bf | 1353 | if (data->type == it8712 || data->type == it8716) { |
1da177e4 | 1354 | data->vid = it87_read_value(client, IT87_REG_VID); |
17d648bf JD |
1355 | /* The older IT8712F revisions had only 5 VID pins, |
1356 | but we assume it is always safe to read 6 bits. */ | |
1357 | data->vid &= 0x3f; | |
1da177e4 LT |
1358 | } |
1359 | data->last_updated = jiffies; | |
1360 | data->valid = 1; | |
1361 | } | |
1362 | ||
9a61bf63 | 1363 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1364 | |
1365 | return data; | |
1366 | } | |
1367 | ||
1368 | static int __init sm_it87_init(void) | |
1369 | { | |
91749996 | 1370 | int res; |
fde09509 JD |
1371 | |
1372 | res = i2c_add_driver(&it87_driver); | |
1373 | if (res) | |
1374 | return res; | |
1375 | ||
91749996 JD |
1376 | if (!it87_find(&isa_address)) { |
1377 | res = i2c_isa_add_driver(&it87_isa_driver); | |
1378 | if (res) { | |
1379 | i2c_del_driver(&it87_driver); | |
1380 | return res; | |
1381 | } | |
fde09509 JD |
1382 | } |
1383 | ||
1384 | return 0; | |
1da177e4 LT |
1385 | } |
1386 | ||
1387 | static void __exit sm_it87_exit(void) | |
1388 | { | |
be79c383 JD |
1389 | if (isa_address) |
1390 | i2c_isa_del_driver(&it87_isa_driver); | |
1da177e4 LT |
1391 | i2c_del_driver(&it87_driver); |
1392 | } | |
1393 | ||
1394 | ||
1395 | MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>"); | |
87673dd7 | 1396 | MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F, SiS950 driver"); |
1da177e4 LT |
1397 | module_param(update_vbat, bool, 0); |
1398 | MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); | |
1399 | module_param(fix_pwm_polarity, bool, 0); | |
1400 | MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)"); | |
1401 | MODULE_LICENSE("GPL"); | |
1402 | ||
1403 | module_init(sm_it87_init); | |
1404 | module_exit(sm_it87_exit); |