Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | it87.c - Part of lm_sensors, Linux kernel modules for hardware | |
3 | monitoring. | |
4 | ||
91749996 | 5 | Supports: IT8705F Super I/O chip w/LPC interface |
1da177e4 | 6 | IT8712F Super I/O chip w/LPC interface & SMBus |
17d648bf | 7 | IT8716F Super I/O chip w/LPC interface |
1da177e4 LT |
8 | Sis950 A clone of the IT8705F |
9 | ||
10 | Copyright (C) 2001 Chris Gauthron <chrisg@0-in.com> | |
11 | Largely inspired by lm78.c of the same package | |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
26 | */ | |
27 | ||
28 | /* | |
29 | djg@pdp8.net David Gesswein 7/18/01 | |
30 | Modified to fix bug with not all alarms enabled. | |
31 | Added ability to read battery voltage and select temperature sensor | |
32 | type at module load time. | |
33 | */ | |
34 | ||
1da177e4 LT |
35 | #include <linux/module.h> |
36 | #include <linux/init.h> | |
37 | #include <linux/slab.h> | |
38 | #include <linux/jiffies.h> | |
39 | #include <linux/i2c.h> | |
fde09509 | 40 | #include <linux/i2c-isa.h> |
943b0830 | 41 | #include <linux/hwmon.h> |
303760b4 JD |
42 | #include <linux/hwmon-sysfs.h> |
43 | #include <linux/hwmon-vid.h> | |
943b0830 | 44 | #include <linux/err.h> |
9a61bf63 | 45 | #include <linux/mutex.h> |
1da177e4 LT |
46 | #include <asm/io.h> |
47 | ||
48 | ||
49 | /* Addresses to scan */ | |
c5e3fbf2 | 50 | static unsigned short normal_i2c[] = { 0x2d, I2C_CLIENT_END }; |
91749996 | 51 | static unsigned short isa_address; |
1da177e4 LT |
52 | |
53 | /* Insmod parameters */ | |
17d648bf | 54 | I2C_CLIENT_INSMOD_3(it87, it8712, it8716); |
1da177e4 LT |
55 | |
56 | #define REG 0x2e /* The register to read/write */ | |
57 | #define DEV 0x07 /* Register: Logical device select */ | |
58 | #define VAL 0x2f /* The value to read/write */ | |
59 | #define PME 0x04 /* The device with the fan registers in it */ | |
60 | #define DEVID 0x20 /* Register: Device ID */ | |
61 | #define DEVREV 0x22 /* Register: Device Revision */ | |
62 | ||
63 | static inline int | |
64 | superio_inb(int reg) | |
65 | { | |
66 | outb(reg, REG); | |
67 | return inb(VAL); | |
68 | } | |
69 | ||
70 | static int superio_inw(int reg) | |
71 | { | |
72 | int val; | |
73 | outb(reg++, REG); | |
74 | val = inb(VAL) << 8; | |
75 | outb(reg, REG); | |
76 | val |= inb(VAL); | |
77 | return val; | |
78 | } | |
79 | ||
80 | static inline void | |
81 | superio_select(void) | |
82 | { | |
83 | outb(DEV, REG); | |
84 | outb(PME, VAL); | |
85 | } | |
86 | ||
87 | static inline void | |
88 | superio_enter(void) | |
89 | { | |
90 | outb(0x87, REG); | |
91 | outb(0x01, REG); | |
92 | outb(0x55, REG); | |
93 | outb(0x55, REG); | |
94 | } | |
95 | ||
96 | static inline void | |
97 | superio_exit(void) | |
98 | { | |
99 | outb(0x02, REG); | |
100 | outb(0x02, VAL); | |
101 | } | |
102 | ||
103 | #define IT8712F_DEVID 0x8712 | |
104 | #define IT8705F_DEVID 0x8705 | |
17d648bf | 105 | #define IT8716F_DEVID 0x8716 |
1da177e4 LT |
106 | #define IT87_ACT_REG 0x30 |
107 | #define IT87_BASE_REG 0x60 | |
108 | ||
109 | /* Update battery voltage after every reading if true */ | |
110 | static int update_vbat; | |
111 | ||
112 | /* Not all BIOSes properly configure the PWM registers */ | |
113 | static int fix_pwm_polarity; | |
114 | ||
115 | /* Chip Type */ | |
116 | ||
117 | static u16 chip_type; | |
118 | ||
119 | /* Many IT87 constants specified below */ | |
120 | ||
121 | /* Length of ISA address segment */ | |
122 | #define IT87_EXTENT 8 | |
123 | ||
124 | /* Where are the ISA address/data registers relative to the base address */ | |
125 | #define IT87_ADDR_REG_OFFSET 5 | |
126 | #define IT87_DATA_REG_OFFSET 6 | |
127 | ||
128 | /*----- The IT87 registers -----*/ | |
129 | ||
130 | #define IT87_REG_CONFIG 0x00 | |
131 | ||
132 | #define IT87_REG_ALARM1 0x01 | |
133 | #define IT87_REG_ALARM2 0x02 | |
134 | #define IT87_REG_ALARM3 0x03 | |
135 | ||
136 | #define IT87_REG_VID 0x0a | |
17d648bf JD |
137 | /* Warning: register 0x0b is used for something completely different in |
138 | new chips/revisions. I suspect only 16-bit tachometer mode will work | |
139 | for these. */ | |
1da177e4 | 140 | #define IT87_REG_FAN_DIV 0x0b |
17d648bf | 141 | #define IT87_REG_FAN_16BIT 0x0c |
1da177e4 LT |
142 | |
143 | /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ | |
144 | ||
145 | #define IT87_REG_FAN(nr) (0x0d + (nr)) | |
146 | #define IT87_REG_FAN_MIN(nr) (0x10 + (nr)) | |
17d648bf JD |
147 | #define IT87_REG_FANX(nr) (0x18 + (nr)) |
148 | #define IT87_REG_FANX_MIN(nr) (0x1b + (nr)) | |
1da177e4 LT |
149 | #define IT87_REG_FAN_MAIN_CTRL 0x13 |
150 | #define IT87_REG_FAN_CTL 0x14 | |
151 | #define IT87_REG_PWM(nr) (0x15 + (nr)) | |
152 | ||
153 | #define IT87_REG_VIN(nr) (0x20 + (nr)) | |
154 | #define IT87_REG_TEMP(nr) (0x29 + (nr)) | |
155 | ||
156 | #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) | |
157 | #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) | |
158 | #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) | |
159 | #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) | |
160 | ||
161 | #define IT87_REG_I2C_ADDR 0x48 | |
162 | ||
163 | #define IT87_REG_VIN_ENABLE 0x50 | |
164 | #define IT87_REG_TEMP_ENABLE 0x51 | |
165 | ||
166 | #define IT87_REG_CHIPID 0x58 | |
167 | ||
168 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255)) | |
169 | #define IN_FROM_REG(val) ((val) * 16) | |
170 | ||
171 | static inline u8 FAN_TO_REG(long rpm, int div) | |
172 | { | |
173 | if (rpm == 0) | |
174 | return 255; | |
175 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
176 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, | |
177 | 254); | |
178 | } | |
179 | ||
17d648bf JD |
180 | static inline u16 FAN16_TO_REG(long rpm) |
181 | { | |
182 | if (rpm == 0) | |
183 | return 0xffff; | |
184 | return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); | |
185 | } | |
186 | ||
1da177e4 | 187 | #define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div))) |
17d648bf JD |
188 | /* The divider is fixed to 2 in 16-bit mode */ |
189 | #define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2)) | |
1da177e4 LT |
190 | |
191 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\ | |
192 | ((val)+500)/1000),-128,127)) | |
193 | #define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000) | |
194 | ||
1da177e4 LT |
195 | #define PWM_TO_REG(val) ((val) >> 1) |
196 | #define PWM_FROM_REG(val) (((val)&0x7f) << 1) | |
197 | ||
198 | static int DIV_TO_REG(int val) | |
199 | { | |
200 | int answer = 0; | |
b9e349f7 | 201 | while (answer < 7 && (val >>= 1)) |
1da177e4 LT |
202 | answer++; |
203 | return answer; | |
204 | } | |
205 | #define DIV_FROM_REG(val) (1 << (val)) | |
206 | ||
207 | ||
208 | /* For each registered IT87, we need to keep some data in memory. That | |
209 | data is pointed to by it87_list[NR]->data. The structure itself is | |
210 | dynamically allocated, at the same time when a new it87 client is | |
211 | allocated. */ | |
212 | struct it87_data { | |
213 | struct i2c_client client; | |
943b0830 | 214 | struct class_device *class_dev; |
9a61bf63 | 215 | struct mutex lock; |
1da177e4 LT |
216 | enum chips type; |
217 | ||
9a61bf63 | 218 | struct mutex update_lock; |
1da177e4 LT |
219 | char valid; /* !=0 if following fields are valid */ |
220 | unsigned long last_updated; /* In jiffies */ | |
221 | ||
222 | u8 in[9]; /* Register value */ | |
3543a53f JD |
223 | u8 in_max[8]; /* Register value */ |
224 | u8 in_min[8]; /* Register value */ | |
9060f8bd | 225 | u8 has_fan; /* Bitfield, fans enabled */ |
17d648bf JD |
226 | u16 fan[3]; /* Register values, possibly combined */ |
227 | u16 fan_min[3]; /* Register values, possibly combined */ | |
1da177e4 LT |
228 | u8 temp[3]; /* Register value */ |
229 | u8 temp_high[3]; /* Register value */ | |
230 | u8 temp_low[3]; /* Register value */ | |
231 | u8 sensor; /* Register value */ | |
232 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
233 | u8 vid; /* Register encoding, combined */ | |
a7be58a1 | 234 | u8 vrm; |
1da177e4 LT |
235 | u32 alarms; /* Register encoding, combined */ |
236 | u8 fan_main_ctrl; /* Register value */ | |
237 | u8 manual_pwm_ctl[3]; /* manual PWM value set by user */ | |
238 | }; | |
239 | ||
240 | ||
241 | static int it87_attach_adapter(struct i2c_adapter *adapter); | |
2d8672c5 | 242 | static int it87_isa_attach_adapter(struct i2c_adapter *adapter); |
1da177e4 LT |
243 | static int it87_detect(struct i2c_adapter *adapter, int address, int kind); |
244 | static int it87_detach_client(struct i2c_client *client); | |
245 | ||
f6c27fc1 DJ |
246 | static int it87_read_value(struct i2c_client *client, u8 reg); |
247 | static int it87_write_value(struct i2c_client *client, u8 reg, u8 value); | |
1da177e4 LT |
248 | static struct it87_data *it87_update_device(struct device *dev); |
249 | static int it87_check_pwm(struct i2c_client *client); | |
250 | static void it87_init_client(struct i2c_client *client, struct it87_data *data); | |
251 | ||
252 | ||
253 | static struct i2c_driver it87_driver = { | |
cdaf7934 | 254 | .driver = { |
cdaf7934 LR |
255 | .name = "it87", |
256 | }, | |
1da177e4 | 257 | .id = I2C_DRIVERID_IT87, |
1da177e4 LT |
258 | .attach_adapter = it87_attach_adapter, |
259 | .detach_client = it87_detach_client, | |
260 | }; | |
261 | ||
fde09509 | 262 | static struct i2c_driver it87_isa_driver = { |
cdaf7934 | 263 | .driver = { |
87218842 | 264 | .owner = THIS_MODULE, |
cdaf7934 LR |
265 | .name = "it87-isa", |
266 | }, | |
2d8672c5 | 267 | .attach_adapter = it87_isa_attach_adapter, |
fde09509 JD |
268 | .detach_client = it87_detach_client, |
269 | }; | |
270 | ||
271 | ||
20ad93d4 JD |
272 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
273 | char *buf) | |
1da177e4 | 274 | { |
20ad93d4 JD |
275 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
276 | int nr = sensor_attr->index; | |
277 | ||
1da177e4 LT |
278 | struct it87_data *data = it87_update_device(dev); |
279 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); | |
280 | } | |
281 | ||
20ad93d4 JD |
282 | static ssize_t show_in_min(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_min[nr])); | |
290 | } | |
291 | ||
20ad93d4 JD |
292 | static ssize_t show_in_max(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_max[nr])); | |
300 | } | |
301 | ||
20ad93d4 JD |
302 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
303 | const char *buf, size_t count) | |
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 i2c_client *client = to_i2c_client(dev); |
309 | struct it87_data *data = i2c_get_clientdata(client); | |
310 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
311 | ||
9a61bf63 | 312 | mutex_lock(&data->update_lock); |
1da177e4 LT |
313 | data->in_min[nr] = IN_TO_REG(val); |
314 | it87_write_value(client, IT87_REG_VIN_MIN(nr), | |
315 | data->in_min[nr]); | |
9a61bf63 | 316 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
317 | return count; |
318 | } | |
20ad93d4 JD |
319 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
320 | const char *buf, size_t count) | |
1da177e4 | 321 | { |
20ad93d4 JD |
322 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
323 | int nr = sensor_attr->index; | |
324 | ||
1da177e4 LT |
325 | struct i2c_client *client = to_i2c_client(dev); |
326 | struct it87_data *data = i2c_get_clientdata(client); | |
327 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
328 | ||
9a61bf63 | 329 | mutex_lock(&data->update_lock); |
1da177e4 LT |
330 | data->in_max[nr] = IN_TO_REG(val); |
331 | it87_write_value(client, IT87_REG_VIN_MAX(nr), | |
332 | data->in_max[nr]); | |
9a61bf63 | 333 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
334 | return count; |
335 | } | |
336 | ||
337 | #define show_in_offset(offset) \ | |
20ad93d4 JD |
338 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
339 | show_in, NULL, offset); | |
1da177e4 LT |
340 | |
341 | #define limit_in_offset(offset) \ | |
20ad93d4 JD |
342 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
343 | show_in_min, set_in_min, offset); \ | |
344 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
345 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
346 | |
347 | show_in_offset(0); | |
348 | limit_in_offset(0); | |
349 | show_in_offset(1); | |
350 | limit_in_offset(1); | |
351 | show_in_offset(2); | |
352 | limit_in_offset(2); | |
353 | show_in_offset(3); | |
354 | limit_in_offset(3); | |
355 | show_in_offset(4); | |
356 | limit_in_offset(4); | |
357 | show_in_offset(5); | |
358 | limit_in_offset(5); | |
359 | show_in_offset(6); | |
360 | limit_in_offset(6); | |
361 | show_in_offset(7); | |
362 | limit_in_offset(7); | |
363 | show_in_offset(8); | |
364 | ||
365 | /* 3 temperatures */ | |
20ad93d4 JD |
366 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
367 | char *buf) | |
1da177e4 | 368 | { |
20ad93d4 JD |
369 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
370 | int nr = sensor_attr->index; | |
371 | ||
1da177e4 LT |
372 | struct it87_data *data = it87_update_device(dev); |
373 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
374 | } | |
20ad93d4 JD |
375 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, |
376 | char *buf) | |
1da177e4 | 377 | { |
20ad93d4 JD |
378 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
379 | int nr = sensor_attr->index; | |
380 | ||
1da177e4 LT |
381 | struct it87_data *data = it87_update_device(dev); |
382 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); | |
383 | } | |
20ad93d4 JD |
384 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
385 | char *buf) | |
1da177e4 | 386 | { |
20ad93d4 JD |
387 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
388 | int nr = sensor_attr->index; | |
389 | ||
1da177e4 LT |
390 | struct it87_data *data = it87_update_device(dev); |
391 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); | |
392 | } | |
20ad93d4 JD |
393 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
394 | const char *buf, size_t count) | |
1da177e4 | 395 | { |
20ad93d4 JD |
396 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
397 | int nr = sensor_attr->index; | |
398 | ||
1da177e4 LT |
399 | struct i2c_client *client = to_i2c_client(dev); |
400 | struct it87_data *data = i2c_get_clientdata(client); | |
401 | int val = simple_strtol(buf, NULL, 10); | |
402 | ||
9a61bf63 | 403 | mutex_lock(&data->update_lock); |
1da177e4 LT |
404 | data->temp_high[nr] = TEMP_TO_REG(val); |
405 | it87_write_value(client, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); | |
9a61bf63 | 406 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
407 | return count; |
408 | } | |
20ad93d4 JD |
409 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
410 | const char *buf, size_t count) | |
1da177e4 | 411 | { |
20ad93d4 JD |
412 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
413 | int nr = sensor_attr->index; | |
414 | ||
1da177e4 LT |
415 | struct i2c_client *client = to_i2c_client(dev); |
416 | struct it87_data *data = i2c_get_clientdata(client); | |
417 | int val = simple_strtol(buf, NULL, 10); | |
418 | ||
9a61bf63 | 419 | mutex_lock(&data->update_lock); |
1da177e4 LT |
420 | data->temp_low[nr] = TEMP_TO_REG(val); |
421 | it87_write_value(client, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); | |
9a61bf63 | 422 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
423 | return count; |
424 | } | |
425 | #define show_temp_offset(offset) \ | |
20ad93d4 JD |
426 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
427 | show_temp, NULL, offset - 1); \ | |
428 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
429 | show_temp_max, set_temp_max, offset - 1); \ | |
430 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
431 | show_temp_min, set_temp_min, offset - 1); | |
1da177e4 LT |
432 | |
433 | show_temp_offset(1); | |
434 | show_temp_offset(2); | |
435 | show_temp_offset(3); | |
436 | ||
20ad93d4 JD |
437 | static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, |
438 | char *buf) | |
1da177e4 | 439 | { |
20ad93d4 JD |
440 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
441 | int nr = sensor_attr->index; | |
442 | ||
1da177e4 LT |
443 | struct it87_data *data = it87_update_device(dev); |
444 | u8 reg = data->sensor; /* In case the value is updated while we use it */ | |
445 | ||
446 | if (reg & (1 << nr)) | |
447 | return sprintf(buf, "3\n"); /* thermal diode */ | |
448 | if (reg & (8 << nr)) | |
449 | return sprintf(buf, "2\n"); /* thermistor */ | |
450 | return sprintf(buf, "0\n"); /* disabled */ | |
451 | } | |
20ad93d4 JD |
452 | static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, |
453 | const char *buf, size_t count) | |
1da177e4 | 454 | { |
20ad93d4 JD |
455 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
456 | int nr = sensor_attr->index; | |
457 | ||
1da177e4 LT |
458 | struct i2c_client *client = to_i2c_client(dev); |
459 | struct it87_data *data = i2c_get_clientdata(client); | |
460 | int val = simple_strtol(buf, NULL, 10); | |
461 | ||
9a61bf63 | 462 | mutex_lock(&data->update_lock); |
1da177e4 LT |
463 | |
464 | data->sensor &= ~(1 << nr); | |
465 | data->sensor &= ~(8 << nr); | |
466 | /* 3 = thermal diode; 2 = thermistor; 0 = disabled */ | |
467 | if (val == 3) | |
468 | data->sensor |= 1 << nr; | |
469 | else if (val == 2) | |
470 | data->sensor |= 8 << nr; | |
471 | else if (val != 0) { | |
9a61bf63 | 472 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
473 | return -EINVAL; |
474 | } | |
475 | it87_write_value(client, IT87_REG_TEMP_ENABLE, data->sensor); | |
9a61bf63 | 476 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
477 | return count; |
478 | } | |
479 | #define show_sensor_offset(offset) \ | |
20ad93d4 JD |
480 | static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ |
481 | show_sensor, set_sensor, offset - 1); | |
1da177e4 LT |
482 | |
483 | show_sensor_offset(1); | |
484 | show_sensor_offset(2); | |
485 | show_sensor_offset(3); | |
486 | ||
487 | /* 3 Fans */ | |
20ad93d4 JD |
488 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
489 | char *buf) | |
1da177e4 | 490 | { |
20ad93d4 JD |
491 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
492 | int nr = sensor_attr->index; | |
493 | ||
1da177e4 LT |
494 | struct it87_data *data = it87_update_device(dev); |
495 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr], | |
496 | DIV_FROM_REG(data->fan_div[nr]))); | |
497 | } | |
20ad93d4 JD |
498 | static ssize_t show_fan_min(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", | |
506 | FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); | |
507 | } | |
20ad93d4 JD |
508 | static ssize_t show_fan_div(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", DIV_FROM_REG(data->fan_div[nr])); | |
516 | } | |
20ad93d4 JD |
517 | static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, |
518 | char *buf) | |
1da177e4 | 519 | { |
20ad93d4 JD |
520 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
521 | int nr = sensor_attr->index; | |
522 | ||
1da177e4 LT |
523 | struct it87_data *data = it87_update_device(dev); |
524 | return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0); | |
525 | } | |
20ad93d4 JD |
526 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
527 | char *buf) | |
1da177e4 | 528 | { |
20ad93d4 JD |
529 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
530 | int nr = sensor_attr->index; | |
531 | ||
1da177e4 LT |
532 | struct it87_data *data = it87_update_device(dev); |
533 | return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]); | |
534 | } | |
20ad93d4 JD |
535 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
536 | const char *buf, size_t count) | |
1da177e4 | 537 | { |
20ad93d4 JD |
538 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
539 | int nr = sensor_attr->index; | |
540 | ||
1da177e4 LT |
541 | struct i2c_client *client = to_i2c_client(dev); |
542 | struct it87_data *data = i2c_get_clientdata(client); | |
543 | int val = simple_strtol(buf, NULL, 10); | |
07eab46d | 544 | u8 reg = it87_read_value(client, IT87_REG_FAN_DIV); |
1da177e4 | 545 | |
9a61bf63 | 546 | mutex_lock(&data->update_lock); |
07eab46d JD |
547 | switch (nr) { |
548 | case 0: data->fan_div[nr] = reg & 0x07; break; | |
549 | case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break; | |
550 | case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break; | |
551 | } | |
552 | ||
1da177e4 LT |
553 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
554 | it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 555 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
556 | return count; |
557 | } | |
20ad93d4 JD |
558 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
559 | const char *buf, size_t count) | |
1da177e4 | 560 | { |
20ad93d4 JD |
561 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
562 | int nr = sensor_attr->index; | |
563 | ||
1da177e4 LT |
564 | struct i2c_client *client = to_i2c_client(dev); |
565 | struct it87_data *data = i2c_get_clientdata(client); | |
b9e349f7 | 566 | unsigned long val = simple_strtoul(buf, NULL, 10); |
1da177e4 LT |
567 | int i, min[3]; |
568 | u8 old; | |
569 | ||
9a61bf63 | 570 | mutex_lock(&data->update_lock); |
1da177e4 LT |
571 | old = it87_read_value(client, IT87_REG_FAN_DIV); |
572 | ||
573 | for (i = 0; i < 3; i++) | |
574 | min[i] = FAN_FROM_REG(data->fan_min[i], DIV_FROM_REG(data->fan_div[i])); | |
575 | ||
576 | switch (nr) { | |
577 | case 0: | |
578 | case 1: | |
579 | data->fan_div[nr] = DIV_TO_REG(val); | |
580 | break; | |
581 | case 2: | |
582 | if (val < 8) | |
583 | data->fan_div[nr] = 1; | |
584 | else | |
585 | data->fan_div[nr] = 3; | |
586 | } | |
587 | val = old & 0x80; | |
588 | val |= (data->fan_div[0] & 0x07); | |
589 | val |= (data->fan_div[1] & 0x07) << 3; | |
590 | if (data->fan_div[2] == 3) | |
591 | val |= 0x1 << 6; | |
592 | it87_write_value(client, IT87_REG_FAN_DIV, val); | |
593 | ||
594 | for (i = 0; i < 3; i++) { | |
595 | data->fan_min[i]=FAN_TO_REG(min[i], DIV_FROM_REG(data->fan_div[i])); | |
596 | it87_write_value(client, IT87_REG_FAN_MIN(i), data->fan_min[i]); | |
597 | } | |
9a61bf63 | 598 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
599 | return count; |
600 | } | |
20ad93d4 JD |
601 | static ssize_t set_pwm_enable(struct device *dev, |
602 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 603 | { |
20ad93d4 JD |
604 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
605 | int nr = sensor_attr->index; | |
606 | ||
1da177e4 LT |
607 | struct i2c_client *client = to_i2c_client(dev); |
608 | struct it87_data *data = i2c_get_clientdata(client); | |
609 | int val = simple_strtol(buf, NULL, 10); | |
610 | ||
9a61bf63 | 611 | mutex_lock(&data->update_lock); |
1da177e4 LT |
612 | |
613 | if (val == 0) { | |
614 | int tmp; | |
615 | /* make sure the fan is on when in on/off mode */ | |
616 | tmp = it87_read_value(client, IT87_REG_FAN_CTL); | |
617 | it87_write_value(client, IT87_REG_FAN_CTL, tmp | (1 << nr)); | |
618 | /* set on/off mode */ | |
619 | data->fan_main_ctrl &= ~(1 << nr); | |
620 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
621 | } else if (val == 1) { | |
622 | /* set SmartGuardian mode */ | |
623 | data->fan_main_ctrl |= (1 << nr); | |
624 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
625 | /* set saved pwm value, clear FAN_CTLX PWM mode bit */ | |
626 | it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); | |
627 | } else { | |
9a61bf63 | 628 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
629 | return -EINVAL; |
630 | } | |
631 | ||
9a61bf63 | 632 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
633 | return count; |
634 | } | |
20ad93d4 JD |
635 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
636 | const char *buf, size_t count) | |
1da177e4 | 637 | { |
20ad93d4 JD |
638 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
639 | int nr = sensor_attr->index; | |
640 | ||
1da177e4 LT |
641 | struct i2c_client *client = to_i2c_client(dev); |
642 | struct it87_data *data = i2c_get_clientdata(client); | |
643 | int val = simple_strtol(buf, NULL, 10); | |
644 | ||
645 | if (val < 0 || val > 255) | |
646 | return -EINVAL; | |
647 | ||
9a61bf63 | 648 | mutex_lock(&data->update_lock); |
1da177e4 LT |
649 | data->manual_pwm_ctl[nr] = val; |
650 | if (data->fan_main_ctrl & (1 << nr)) | |
651 | it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); | |
9a61bf63 | 652 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
653 | return count; |
654 | } | |
655 | ||
20ad93d4 JD |
656 | #define show_fan_offset(offset) \ |
657 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
658 | show_fan, NULL, offset - 1); \ | |
659 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
660 | show_fan_min, set_fan_min, offset - 1); \ | |
661 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
662 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
663 | |
664 | show_fan_offset(1); | |
665 | show_fan_offset(2); | |
666 | show_fan_offset(3); | |
667 | ||
668 | #define show_pwm_offset(offset) \ | |
20ad93d4 JD |
669 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
670 | show_pwm_enable, set_pwm_enable, offset - 1); \ | |
671 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ | |
672 | show_pwm, set_pwm, offset - 1); | |
1da177e4 LT |
673 | |
674 | show_pwm_offset(1); | |
675 | show_pwm_offset(2); | |
676 | show_pwm_offset(3); | |
677 | ||
17d648bf JD |
678 | /* A different set of callbacks for 16-bit fans */ |
679 | static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, | |
680 | char *buf) | |
681 | { | |
682 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
683 | int nr = sensor_attr->index; | |
684 | struct it87_data *data = it87_update_device(dev); | |
685 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); | |
686 | } | |
687 | ||
688 | static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, | |
689 | char *buf) | |
690 | { | |
691 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
692 | int nr = sensor_attr->index; | |
693 | struct it87_data *data = it87_update_device(dev); | |
694 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); | |
695 | } | |
696 | ||
697 | static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, | |
698 | const char *buf, size_t count) | |
699 | { | |
700 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
701 | int nr = sensor_attr->index; | |
702 | struct i2c_client *client = to_i2c_client(dev); | |
703 | struct it87_data *data = i2c_get_clientdata(client); | |
704 | int val = simple_strtol(buf, NULL, 10); | |
705 | ||
706 | mutex_lock(&data->update_lock); | |
707 | data->fan_min[nr] = FAN16_TO_REG(val); | |
708 | it87_write_value(client, IT87_REG_FAN_MIN(nr), | |
709 | data->fan_min[nr] & 0xff); | |
710 | it87_write_value(client, IT87_REG_FANX_MIN(nr), | |
711 | data->fan_min[nr] >> 8); | |
712 | mutex_unlock(&data->update_lock); | |
713 | return count; | |
714 | } | |
715 | ||
716 | /* We want to use the same sysfs file names as 8-bit fans, but we need | |
717 | different variable names, so we have to use SENSOR_ATTR instead of | |
718 | SENSOR_DEVICE_ATTR. */ | |
719 | #define show_fan16_offset(offset) \ | |
720 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ | |
721 | = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ | |
722 | show_fan16, NULL, offset - 1); \ | |
723 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ | |
724 | = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
725 | show_fan16_min, set_fan16_min, offset - 1) | |
726 | ||
727 | show_fan16_offset(1); | |
728 | show_fan16_offset(2); | |
729 | show_fan16_offset(3); | |
730 | ||
1da177e4 | 731 | /* Alarms */ |
30f74292 | 732 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
733 | { |
734 | struct it87_data *data = it87_update_device(dev); | |
68188ba7 | 735 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 | 736 | } |
1d66c64c | 737 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4 LT |
738 | |
739 | static ssize_t | |
30f74292 | 740 | show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
741 | { |
742 | struct it87_data *data = it87_update_device(dev); | |
a7be58a1 | 743 | return sprintf(buf, "%u\n", data->vrm); |
1da177e4 LT |
744 | } |
745 | static ssize_t | |
30f74292 | 746 | store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
747 | { |
748 | struct i2c_client *client = to_i2c_client(dev); | |
749 | struct it87_data *data = i2c_get_clientdata(client); | |
750 | u32 val; | |
751 | ||
752 | val = simple_strtoul(buf, NULL, 10); | |
753 | data->vrm = val; | |
754 | ||
755 | return count; | |
756 | } | |
757 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
758 | #define device_create_file_vrm(client) \ | |
759 | device_create_file(&client->dev, &dev_attr_vrm) | |
760 | ||
761 | static ssize_t | |
30f74292 | 762 | show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
763 | { |
764 | struct it87_data *data = it87_update_device(dev); | |
765 | return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); | |
766 | } | |
767 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
768 | #define device_create_file_vid(client) \ | |
769 | device_create_file(&client->dev, &dev_attr_cpu0_vid) | |
770 | ||
771 | /* This function is called when: | |
772 | * it87_driver is inserted (when this module is loaded), for each | |
773 | available adapter | |
774 | * when a new adapter is inserted (and it87_driver is still present) */ | |
775 | static int it87_attach_adapter(struct i2c_adapter *adapter) | |
776 | { | |
777 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
778 | return 0; | |
2ed2dc3c | 779 | return i2c_probe(adapter, &addr_data, it87_detect); |
1da177e4 LT |
780 | } |
781 | ||
2d8672c5 JD |
782 | static int it87_isa_attach_adapter(struct i2c_adapter *adapter) |
783 | { | |
784 | return it87_detect(adapter, isa_address, -1); | |
785 | } | |
786 | ||
787 | /* SuperIO detection - will change isa_address if a chip is found */ | |
91749996 | 788 | static int __init it87_find(unsigned short *address) |
1da177e4 LT |
789 | { |
790 | int err = -ENODEV; | |
791 | ||
792 | superio_enter(); | |
793 | chip_type = superio_inw(DEVID); | |
794 | if (chip_type != IT8712F_DEVID | |
17d648bf | 795 | && chip_type != IT8716F_DEVID |
1da177e4 LT |
796 | && chip_type != IT8705F_DEVID) |
797 | goto exit; | |
798 | ||
799 | superio_select(); | |
800 | if (!(superio_inb(IT87_ACT_REG) & 0x01)) { | |
801 | pr_info("it87: Device not activated, skipping\n"); | |
802 | goto exit; | |
803 | } | |
804 | ||
805 | *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); | |
806 | if (*address == 0) { | |
807 | pr_info("it87: Base address not set, skipping\n"); | |
808 | goto exit; | |
809 | } | |
810 | ||
811 | err = 0; | |
812 | pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", | |
813 | chip_type, *address, superio_inb(DEVREV) & 0x0f); | |
814 | ||
815 | exit: | |
816 | superio_exit(); | |
817 | return err; | |
818 | } | |
819 | ||
2ed2dc3c | 820 | /* This function is called by i2c_probe */ |
c49efcef | 821 | static int it87_detect(struct i2c_adapter *adapter, int address, int kind) |
1da177e4 LT |
822 | { |
823 | int i; | |
824 | struct i2c_client *new_client; | |
825 | struct it87_data *data; | |
826 | int err = 0; | |
827 | const char *name = ""; | |
828 | int is_isa = i2c_is_isa_adapter(adapter); | |
829 | int enable_pwm_interface; | |
830 | ||
831 | if (!is_isa && | |
832 | !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
833 | goto ERROR0; | |
834 | ||
835 | /* Reserve the ISA region */ | |
836 | if (is_isa) | |
cdaf7934 LR |
837 | if (!request_region(address, IT87_EXTENT, |
838 | it87_isa_driver.driver.name)) | |
1da177e4 LT |
839 | goto ERROR0; |
840 | ||
91749996 | 841 | /* For now, we presume we have a valid client. We create the |
1da177e4 LT |
842 | client structure, even though we cannot fill it completely yet. |
843 | But it allows us to access it87_{read,write}_value. */ | |
844 | ||
ba9c2e8d | 845 | if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { |
1da177e4 LT |
846 | err = -ENOMEM; |
847 | goto ERROR1; | |
848 | } | |
1da177e4 LT |
849 | |
850 | new_client = &data->client; | |
851 | if (is_isa) | |
9a61bf63 | 852 | mutex_init(&data->lock); |
1da177e4 LT |
853 | i2c_set_clientdata(new_client, data); |
854 | new_client->addr = address; | |
855 | new_client->adapter = adapter; | |
fde09509 | 856 | new_client->driver = is_isa ? &it87_isa_driver : &it87_driver; |
1da177e4 LT |
857 | new_client->flags = 0; |
858 | ||
859 | /* Now, we do the remaining detection. */ | |
860 | ||
861 | if (kind < 0) { | |
862 | if ((it87_read_value(new_client, IT87_REG_CONFIG) & 0x80) | |
863 | || (!is_isa | |
864 | && it87_read_value(new_client, IT87_REG_I2C_ADDR) != address)) { | |
865 | err = -ENODEV; | |
866 | goto ERROR2; | |
867 | } | |
868 | } | |
869 | ||
870 | /* Determine the chip type. */ | |
871 | if (kind <= 0) { | |
872 | i = it87_read_value(new_client, IT87_REG_CHIPID); | |
873 | if (i == 0x90) { | |
874 | kind = it87; | |
17d648bf JD |
875 | if (is_isa) { |
876 | switch (chip_type) { | |
877 | case IT8712F_DEVID: | |
878 | kind = it8712; | |
879 | break; | |
880 | case IT8716F_DEVID: | |
881 | kind = it8716; | |
882 | break; | |
883 | } | |
884 | } | |
1da177e4 LT |
885 | } |
886 | else { | |
887 | if (kind == 0) | |
888 | dev_info(&adapter->dev, | |
889 | "Ignoring 'force' parameter for unknown chip at " | |
890 | "adapter %d, address 0x%02x\n", | |
891 | i2c_adapter_id(adapter), address); | |
892 | err = -ENODEV; | |
893 | goto ERROR2; | |
894 | } | |
895 | } | |
896 | ||
897 | if (kind == it87) { | |
898 | name = "it87"; | |
899 | } else if (kind == it8712) { | |
900 | name = "it8712"; | |
17d648bf JD |
901 | } else if (kind == it8716) { |
902 | name = "it8716"; | |
1da177e4 LT |
903 | } |
904 | ||
905 | /* Fill in the remaining client fields and put it into the global list */ | |
906 | strlcpy(new_client->name, name, I2C_NAME_SIZE); | |
907 | data->type = kind; | |
908 | data->valid = 0; | |
9a61bf63 | 909 | mutex_init(&data->update_lock); |
1da177e4 LT |
910 | |
911 | /* Tell the I2C layer a new client has arrived */ | |
912 | if ((err = i2c_attach_client(new_client))) | |
913 | goto ERROR2; | |
914 | ||
c5e3fbf2 JD |
915 | if (!is_isa) |
916 | dev_info(&new_client->dev, "The I2C interface to IT87xxF " | |
917 | "hardware monitoring chips is deprecated. Please " | |
918 | "report if you still rely on it.\n"); | |
919 | ||
1da177e4 LT |
920 | /* Check PWM configuration */ |
921 | enable_pwm_interface = it87_check_pwm(new_client); | |
922 | ||
923 | /* Initialize the IT87 chip */ | |
924 | it87_init_client(new_client, data); | |
925 | ||
926 | /* Register sysfs hooks */ | |
943b0830 MH |
927 | data->class_dev = hwmon_device_register(&new_client->dev); |
928 | if (IS_ERR(data->class_dev)) { | |
929 | err = PTR_ERR(data->class_dev); | |
930 | goto ERROR3; | |
931 | } | |
932 | ||
20ad93d4 JD |
933 | device_create_file(&new_client->dev, &sensor_dev_attr_in0_input.dev_attr); |
934 | device_create_file(&new_client->dev, &sensor_dev_attr_in1_input.dev_attr); | |
935 | device_create_file(&new_client->dev, &sensor_dev_attr_in2_input.dev_attr); | |
936 | device_create_file(&new_client->dev, &sensor_dev_attr_in3_input.dev_attr); | |
937 | device_create_file(&new_client->dev, &sensor_dev_attr_in4_input.dev_attr); | |
938 | device_create_file(&new_client->dev, &sensor_dev_attr_in5_input.dev_attr); | |
939 | device_create_file(&new_client->dev, &sensor_dev_attr_in6_input.dev_attr); | |
940 | device_create_file(&new_client->dev, &sensor_dev_attr_in7_input.dev_attr); | |
941 | device_create_file(&new_client->dev, &sensor_dev_attr_in8_input.dev_attr); | |
942 | device_create_file(&new_client->dev, &sensor_dev_attr_in0_min.dev_attr); | |
943 | device_create_file(&new_client->dev, &sensor_dev_attr_in1_min.dev_attr); | |
944 | device_create_file(&new_client->dev, &sensor_dev_attr_in2_min.dev_attr); | |
945 | device_create_file(&new_client->dev, &sensor_dev_attr_in3_min.dev_attr); | |
946 | device_create_file(&new_client->dev, &sensor_dev_attr_in4_min.dev_attr); | |
947 | device_create_file(&new_client->dev, &sensor_dev_attr_in5_min.dev_attr); | |
948 | device_create_file(&new_client->dev, &sensor_dev_attr_in6_min.dev_attr); | |
949 | device_create_file(&new_client->dev, &sensor_dev_attr_in7_min.dev_attr); | |
950 | device_create_file(&new_client->dev, &sensor_dev_attr_in0_max.dev_attr); | |
951 | device_create_file(&new_client->dev, &sensor_dev_attr_in1_max.dev_attr); | |
952 | device_create_file(&new_client->dev, &sensor_dev_attr_in2_max.dev_attr); | |
953 | device_create_file(&new_client->dev, &sensor_dev_attr_in3_max.dev_attr); | |
954 | device_create_file(&new_client->dev, &sensor_dev_attr_in4_max.dev_attr); | |
955 | device_create_file(&new_client->dev, &sensor_dev_attr_in5_max.dev_attr); | |
956 | device_create_file(&new_client->dev, &sensor_dev_attr_in6_max.dev_attr); | |
957 | device_create_file(&new_client->dev, &sensor_dev_attr_in7_max.dev_attr); | |
958 | device_create_file(&new_client->dev, &sensor_dev_attr_temp1_input.dev_attr); | |
959 | device_create_file(&new_client->dev, &sensor_dev_attr_temp2_input.dev_attr); | |
960 | device_create_file(&new_client->dev, &sensor_dev_attr_temp3_input.dev_attr); | |
961 | device_create_file(&new_client->dev, &sensor_dev_attr_temp1_max.dev_attr); | |
962 | device_create_file(&new_client->dev, &sensor_dev_attr_temp2_max.dev_attr); | |
963 | device_create_file(&new_client->dev, &sensor_dev_attr_temp3_max.dev_attr); | |
964 | device_create_file(&new_client->dev, &sensor_dev_attr_temp1_min.dev_attr); | |
965 | device_create_file(&new_client->dev, &sensor_dev_attr_temp2_min.dev_attr); | |
966 | device_create_file(&new_client->dev, &sensor_dev_attr_temp3_min.dev_attr); | |
967 | device_create_file(&new_client->dev, &sensor_dev_attr_temp1_type.dev_attr); | |
968 | device_create_file(&new_client->dev, &sensor_dev_attr_temp2_type.dev_attr); | |
969 | device_create_file(&new_client->dev, &sensor_dev_attr_temp3_type.dev_attr); | |
17d648bf | 970 | |
9060f8bd | 971 | /* Do not create fan files for disabled fans */ |
17d648bf | 972 | if (data->type == it8716) { /* 16-bit tachometers */ |
9060f8bd JD |
973 | if (data->has_fan & (1 << 0)) { |
974 | device_create_file(&new_client->dev, | |
975 | &sensor_dev_attr_fan1_input16.dev_attr); | |
976 | device_create_file(&new_client->dev, | |
977 | &sensor_dev_attr_fan1_min16.dev_attr); | |
978 | } | |
979 | if (data->has_fan & (1 << 1)) { | |
980 | device_create_file(&new_client->dev, | |
981 | &sensor_dev_attr_fan2_input16.dev_attr); | |
982 | device_create_file(&new_client->dev, | |
983 | &sensor_dev_attr_fan2_min16.dev_attr); | |
984 | } | |
985 | if (data->has_fan & (1 << 2)) { | |
986 | device_create_file(&new_client->dev, | |
987 | &sensor_dev_attr_fan3_input16.dev_attr); | |
988 | device_create_file(&new_client->dev, | |
989 | &sensor_dev_attr_fan3_min16.dev_attr); | |
990 | } | |
17d648bf | 991 | } else { |
9060f8bd JD |
992 | if (data->has_fan & (1 << 0)) { |
993 | device_create_file(&new_client->dev, | |
994 | &sensor_dev_attr_fan1_input.dev_attr); | |
995 | device_create_file(&new_client->dev, | |
996 | &sensor_dev_attr_fan1_min.dev_attr); | |
997 | device_create_file(&new_client->dev, | |
998 | &sensor_dev_attr_fan1_div.dev_attr); | |
999 | } | |
1000 | if (data->has_fan & (1 << 1)) { | |
1001 | device_create_file(&new_client->dev, | |
1002 | &sensor_dev_attr_fan2_input.dev_attr); | |
1003 | device_create_file(&new_client->dev, | |
1004 | &sensor_dev_attr_fan2_min.dev_attr); | |
1005 | device_create_file(&new_client->dev, | |
1006 | &sensor_dev_attr_fan2_div.dev_attr); | |
1007 | } | |
1008 | if (data->has_fan & (1 << 2)) { | |
1009 | device_create_file(&new_client->dev, | |
1010 | &sensor_dev_attr_fan3_input.dev_attr); | |
1011 | device_create_file(&new_client->dev, | |
1012 | &sensor_dev_attr_fan3_min.dev_attr); | |
1013 | device_create_file(&new_client->dev, | |
1014 | &sensor_dev_attr_fan3_div.dev_attr); | |
1015 | } | |
17d648bf JD |
1016 | } |
1017 | ||
1da177e4 LT |
1018 | device_create_file(&new_client->dev, &dev_attr_alarms); |
1019 | if (enable_pwm_interface) { | |
20ad93d4 JD |
1020 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm1_enable.dev_attr); |
1021 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm2_enable.dev_attr); | |
1022 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm3_enable.dev_attr); | |
1023 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm1.dev_attr); | |
1024 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm2.dev_attr); | |
1025 | device_create_file(&new_client->dev, &sensor_dev_attr_pwm3.dev_attr); | |
1da177e4 LT |
1026 | } |
1027 | ||
17d648bf | 1028 | if (data->type == it8712 || data->type == it8716) { |
303760b4 | 1029 | data->vrm = vid_which_vrm(); |
1da177e4 LT |
1030 | device_create_file_vrm(new_client); |
1031 | device_create_file_vid(new_client); | |
1032 | } | |
1033 | ||
1034 | return 0; | |
1035 | ||
943b0830 MH |
1036 | ERROR3: |
1037 | i2c_detach_client(new_client); | |
1da177e4 LT |
1038 | ERROR2: |
1039 | kfree(data); | |
1040 | ERROR1: | |
1041 | if (is_isa) | |
1042 | release_region(address, IT87_EXTENT); | |
1043 | ERROR0: | |
1044 | return err; | |
1045 | } | |
1046 | ||
1047 | static int it87_detach_client(struct i2c_client *client) | |
1048 | { | |
943b0830 | 1049 | struct it87_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
1050 | int err; |
1051 | ||
943b0830 MH |
1052 | hwmon_device_unregister(data->class_dev); |
1053 | ||
7bef5594 | 1054 | if ((err = i2c_detach_client(client))) |
1da177e4 | 1055 | return err; |
1da177e4 LT |
1056 | |
1057 | if(i2c_is_isa_client(client)) | |
1058 | release_region(client->addr, IT87_EXTENT); | |
943b0830 | 1059 | kfree(data); |
1da177e4 LT |
1060 | |
1061 | return 0; | |
1062 | } | |
1063 | ||
44bbe87e | 1064 | /* The SMBus locks itself, but ISA access must be locked explicitly! |
1da177e4 LT |
1065 | We don't want to lock the whole ISA bus, so we lock each client |
1066 | separately. | |
1067 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, | |
1068 | would slow down the IT87 access and should not be necessary. */ | |
1069 | static int it87_read_value(struct i2c_client *client, u8 reg) | |
1070 | { | |
1071 | struct it87_data *data = i2c_get_clientdata(client); | |
1072 | ||
1073 | int res; | |
1074 | if (i2c_is_isa_client(client)) { | |
9a61bf63 | 1075 | mutex_lock(&data->lock); |
1da177e4 LT |
1076 | outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); |
1077 | res = inb_p(client->addr + IT87_DATA_REG_OFFSET); | |
9a61bf63 | 1078 | mutex_unlock(&data->lock); |
1da177e4 LT |
1079 | return res; |
1080 | } else | |
1081 | return i2c_smbus_read_byte_data(client, reg); | |
1082 | } | |
1083 | ||
44bbe87e | 1084 | /* The SMBus locks itself, but ISA access muse be locked explicitly! |
1da177e4 LT |
1085 | We don't want to lock the whole ISA bus, so we lock each client |
1086 | separately. | |
1087 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, | |
1088 | would slow down the IT87 access and should not be necessary. */ | |
1089 | static int it87_write_value(struct i2c_client *client, u8 reg, u8 value) | |
1090 | { | |
1091 | struct it87_data *data = i2c_get_clientdata(client); | |
1092 | ||
1093 | if (i2c_is_isa_client(client)) { | |
9a61bf63 | 1094 | mutex_lock(&data->lock); |
1da177e4 LT |
1095 | outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); |
1096 | outb_p(value, client->addr + IT87_DATA_REG_OFFSET); | |
9a61bf63 | 1097 | mutex_unlock(&data->lock); |
1da177e4 LT |
1098 | return 0; |
1099 | } else | |
1100 | return i2c_smbus_write_byte_data(client, reg, value); | |
1101 | } | |
1102 | ||
1103 | /* Return 1 if and only if the PWM interface is safe to use */ | |
1104 | static int it87_check_pwm(struct i2c_client *client) | |
1105 | { | |
1106 | /* Some BIOSes fail to correctly configure the IT87 fans. All fans off | |
1107 | * and polarity set to active low is sign that this is the case so we | |
1108 | * disable pwm control to protect the user. */ | |
1109 | int tmp = it87_read_value(client, IT87_REG_FAN_CTL); | |
1110 | if ((tmp & 0x87) == 0) { | |
1111 | if (fix_pwm_polarity) { | |
1112 | /* The user asks us to attempt a chip reconfiguration. | |
1113 | * This means switching to active high polarity and | |
1114 | * inverting all fan speed values. */ | |
1115 | int i; | |
1116 | u8 pwm[3]; | |
1117 | ||
1118 | for (i = 0; i < 3; i++) | |
1119 | pwm[i] = it87_read_value(client, | |
1120 | IT87_REG_PWM(i)); | |
1121 | ||
1122 | /* If any fan is in automatic pwm mode, the polarity | |
1123 | * might be correct, as suspicious as it seems, so we | |
1124 | * better don't change anything (but still disable the | |
1125 | * PWM interface). */ | |
1126 | if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { | |
1127 | dev_info(&client->dev, "Reconfiguring PWM to " | |
1128 | "active high polarity\n"); | |
1129 | it87_write_value(client, IT87_REG_FAN_CTL, | |
1130 | tmp | 0x87); | |
1131 | for (i = 0; i < 3; i++) | |
1132 | it87_write_value(client, | |
1133 | IT87_REG_PWM(i), | |
1134 | 0x7f & ~pwm[i]); | |
1135 | return 1; | |
1136 | } | |
1137 | ||
1138 | dev_info(&client->dev, "PWM configuration is " | |
1139 | "too broken to be fixed\n"); | |
1140 | } | |
1141 | ||
1142 | dev_info(&client->dev, "Detected broken BIOS " | |
1143 | "defaults, disabling PWM interface\n"); | |
1144 | return 0; | |
1145 | } else if (fix_pwm_polarity) { | |
1146 | dev_info(&client->dev, "PWM configuration looks " | |
1147 | "sane, won't touch\n"); | |
1148 | } | |
1149 | ||
1150 | return 1; | |
1151 | } | |
1152 | ||
1153 | /* Called when we have found a new IT87. */ | |
1154 | static void it87_init_client(struct i2c_client *client, struct it87_data *data) | |
1155 | { | |
1156 | int tmp, i; | |
1157 | ||
1158 | /* initialize to sane defaults: | |
1159 | * - if the chip is in manual pwm mode, this will be overwritten with | |
1160 | * the actual settings on the chip (so in this case, initialization | |
1161 | * is not needed) | |
1162 | * - if in automatic or on/off mode, we could switch to manual mode, | |
1163 | * read the registers and set manual_pwm_ctl accordingly, but currently | |
1164 | * this is not implemented, so we initialize to something sane */ | |
1165 | for (i = 0; i < 3; i++) { | |
1166 | data->manual_pwm_ctl[i] = 0xff; | |
1167 | } | |
1168 | ||
1169 | /* Check if temperature channnels are reset manually or by some reason */ | |
1170 | tmp = it87_read_value(client, IT87_REG_TEMP_ENABLE); | |
1171 | if ((tmp & 0x3f) == 0) { | |
1172 | /* Temp1,Temp3=thermistor; Temp2=thermal diode */ | |
1173 | tmp = (tmp & 0xc0) | 0x2a; | |
1174 | it87_write_value(client, IT87_REG_TEMP_ENABLE, tmp); | |
1175 | } | |
1176 | data->sensor = tmp; | |
1177 | ||
1178 | /* Check if voltage monitors are reset manually or by some reason */ | |
1179 | tmp = it87_read_value(client, IT87_REG_VIN_ENABLE); | |
1180 | if ((tmp & 0xff) == 0) { | |
1181 | /* Enable all voltage monitors */ | |
1182 | it87_write_value(client, IT87_REG_VIN_ENABLE, 0xff); | |
1183 | } | |
1184 | ||
1185 | /* Check if tachometers are reset manually or by some reason */ | |
1186 | data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL); | |
1187 | if ((data->fan_main_ctrl & 0x70) == 0) { | |
1188 | /* Enable all fan tachometers */ | |
1189 | data->fan_main_ctrl |= 0x70; | |
1190 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
1191 | } | |
9060f8bd | 1192 | data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; |
1da177e4 | 1193 | |
17d648bf JD |
1194 | /* Set tachometers to 16-bit mode if needed */ |
1195 | if (data->type == it8716) { | |
1196 | tmp = it87_read_value(client, IT87_REG_FAN_16BIT); | |
9060f8bd | 1197 | if (~tmp & 0x07 & data->has_fan) { |
17d648bf JD |
1198 | dev_dbg(&client->dev, |
1199 | "Setting fan1-3 to 16-bit mode\n"); | |
1200 | it87_write_value(client, IT87_REG_FAN_16BIT, | |
1201 | tmp | 0x07); | |
1202 | } | |
1203 | } | |
1204 | ||
1da177e4 LT |
1205 | /* Set current fan mode registers and the default settings for the |
1206 | * other mode registers */ | |
1207 | for (i = 0; i < 3; i++) { | |
1208 | if (data->fan_main_ctrl & (1 << i)) { | |
1209 | /* pwm mode */ | |
1210 | tmp = it87_read_value(client, IT87_REG_PWM(i)); | |
1211 | if (tmp & 0x80) { | |
1212 | /* automatic pwm - not yet implemented, but | |
1213 | * leave the settings made by the BIOS alone | |
1214 | * until a change is requested via the sysfs | |
1215 | * interface */ | |
1216 | } else { | |
1217 | /* manual pwm */ | |
1218 | data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp); | |
1219 | } | |
1220 | } | |
1221 | } | |
1222 | ||
1223 | /* Start monitoring */ | |
1224 | it87_write_value(client, IT87_REG_CONFIG, | |
1225 | (it87_read_value(client, IT87_REG_CONFIG) & 0x36) | |
1226 | | (update_vbat ? 0x41 : 0x01)); | |
1227 | } | |
1228 | ||
1229 | static struct it87_data *it87_update_device(struct device *dev) | |
1230 | { | |
1231 | struct i2c_client *client = to_i2c_client(dev); | |
1232 | struct it87_data *data = i2c_get_clientdata(client); | |
1233 | int i; | |
1234 | ||
9a61bf63 | 1235 | mutex_lock(&data->update_lock); |
1da177e4 LT |
1236 | |
1237 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
1238 | || !data->valid) { | |
1239 | ||
1240 | if (update_vbat) { | |
1241 | /* Cleared after each update, so reenable. Value | |
1242 | returned by this read will be previous value */ | |
1243 | it87_write_value(client, IT87_REG_CONFIG, | |
1244 | it87_read_value(client, IT87_REG_CONFIG) | 0x40); | |
1245 | } | |
1246 | for (i = 0; i <= 7; i++) { | |
1247 | data->in[i] = | |
1248 | it87_read_value(client, IT87_REG_VIN(i)); | |
1249 | data->in_min[i] = | |
1250 | it87_read_value(client, IT87_REG_VIN_MIN(i)); | |
1251 | data->in_max[i] = | |
1252 | it87_read_value(client, IT87_REG_VIN_MAX(i)); | |
1253 | } | |
3543a53f | 1254 | /* in8 (battery) has no limit registers */ |
1da177e4 LT |
1255 | data->in[8] = |
1256 | it87_read_value(client, IT87_REG_VIN(8)); | |
1da177e4 LT |
1257 | |
1258 | for (i = 0; i < 3; i++) { | |
9060f8bd JD |
1259 | /* Skip disabled fans */ |
1260 | if (!(data->has_fan & (1 << i))) | |
1261 | continue; | |
1262 | ||
1da177e4 LT |
1263 | data->fan_min[i] = |
1264 | it87_read_value(client, IT87_REG_FAN_MIN(i)); | |
17d648bf JD |
1265 | data->fan[i] = it87_read_value(client, |
1266 | IT87_REG_FAN(i)); | |
1267 | /* Add high byte if in 16-bit mode */ | |
1268 | if (data->type == it8716) { | |
1269 | data->fan[i] |= it87_read_value(client, | |
1270 | IT87_REG_FANX(i)) << 8; | |
1271 | data->fan_min[i] |= it87_read_value(client, | |
1272 | IT87_REG_FANX_MIN(i)) << 8; | |
1273 | } | |
1da177e4 LT |
1274 | } |
1275 | for (i = 0; i < 3; i++) { | |
1276 | data->temp[i] = | |
1277 | it87_read_value(client, IT87_REG_TEMP(i)); | |
1278 | data->temp_high[i] = | |
1279 | it87_read_value(client, IT87_REG_TEMP_HIGH(i)); | |
1280 | data->temp_low[i] = | |
1281 | it87_read_value(client, IT87_REG_TEMP_LOW(i)); | |
1282 | } | |
1283 | ||
17d648bf | 1284 | /* Newer chips don't have clock dividers */ |
9060f8bd | 1285 | if ((data->has_fan & 0x07) && data->type != it8716) { |
17d648bf JD |
1286 | i = it87_read_value(client, IT87_REG_FAN_DIV); |
1287 | data->fan_div[0] = i & 0x07; | |
1288 | data->fan_div[1] = (i >> 3) & 0x07; | |
1289 | data->fan_div[2] = (i & 0x40) ? 3 : 1; | |
1290 | } | |
1da177e4 LT |
1291 | |
1292 | data->alarms = | |
1293 | it87_read_value(client, IT87_REG_ALARM1) | | |
1294 | (it87_read_value(client, IT87_REG_ALARM2) << 8) | | |
1295 | (it87_read_value(client, IT87_REG_ALARM3) << 16); | |
1296 | data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL); | |
1297 | ||
1298 | data->sensor = it87_read_value(client, IT87_REG_TEMP_ENABLE); | |
1299 | /* The 8705 does not have VID capability */ | |
17d648bf | 1300 | if (data->type == it8712 || data->type == it8716) { |
1da177e4 | 1301 | data->vid = it87_read_value(client, IT87_REG_VID); |
17d648bf JD |
1302 | /* The older IT8712F revisions had only 5 VID pins, |
1303 | but we assume it is always safe to read 6 bits. */ | |
1304 | data->vid &= 0x3f; | |
1da177e4 LT |
1305 | } |
1306 | data->last_updated = jiffies; | |
1307 | data->valid = 1; | |
1308 | } | |
1309 | ||
9a61bf63 | 1310 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1311 | |
1312 | return data; | |
1313 | } | |
1314 | ||
1315 | static int __init sm_it87_init(void) | |
1316 | { | |
91749996 | 1317 | int res; |
fde09509 JD |
1318 | |
1319 | res = i2c_add_driver(&it87_driver); | |
1320 | if (res) | |
1321 | return res; | |
1322 | ||
91749996 JD |
1323 | if (!it87_find(&isa_address)) { |
1324 | res = i2c_isa_add_driver(&it87_isa_driver); | |
1325 | if (res) { | |
1326 | i2c_del_driver(&it87_driver); | |
1327 | return res; | |
1328 | } | |
fde09509 JD |
1329 | } |
1330 | ||
1331 | return 0; | |
1da177e4 LT |
1332 | } |
1333 | ||
1334 | static void __exit sm_it87_exit(void) | |
1335 | { | |
be79c383 JD |
1336 | if (isa_address) |
1337 | i2c_isa_del_driver(&it87_isa_driver); | |
1da177e4 LT |
1338 | i2c_del_driver(&it87_driver); |
1339 | } | |
1340 | ||
1341 | ||
1342 | MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>"); | |
17d648bf | 1343 | MODULE_DESCRIPTION("IT8705F/8712F/8716F, SiS950 driver"); |
1da177e4 LT |
1344 | module_param(update_vbat, bool, 0); |
1345 | MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); | |
1346 | module_param(fix_pwm_polarity, bool, 0); | |
1347 | MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)"); | |
1348 | MODULE_LICENSE("GPL"); | |
1349 | ||
1350 | module_init(sm_it87_init); | |
1351 | module_exit(sm_it87_exit); |