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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 |
8e9afcbb | 6 | IT8712F Super I/O chip w/LPC interface |
17d648bf | 7 | IT8716F Super I/O chip w/LPC interface |
87673dd7 | 8 | IT8718F Super I/O chip w/LPC interface |
08a8f6e9 | 9 | IT8726F Super I/O chip w/LPC interface |
1da177e4 LT |
10 | Sis950 A clone of the IT8705F |
11 | ||
12 | Copyright (C) 2001 Chris Gauthron <chrisg@0-in.com> | |
b19367c6 | 13 | Copyright (C) 2005-2006 Jean Delvare <khali@linux-fr.org> |
1da177e4 LT |
14 | |
15 | This program is free software; you can redistribute it and/or modify | |
16 | it under the terms of the GNU General Public License as published by | |
17 | the Free Software Foundation; either version 2 of the License, or | |
18 | (at your option) any later version. | |
19 | ||
20 | This program is distributed in the hope that it will be useful, | |
21 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | GNU General Public License for more details. | |
24 | ||
25 | You should have received a copy of the GNU General Public License | |
26 | along with this program; if not, write to the Free Software | |
27 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
28 | */ | |
29 | ||
1da177e4 LT |
30 | #include <linux/module.h> |
31 | #include <linux/init.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/jiffies.h> | |
34 | #include <linux/i2c.h> | |
fde09509 | 35 | #include <linux/i2c-isa.h> |
943b0830 | 36 | #include <linux/hwmon.h> |
303760b4 JD |
37 | #include <linux/hwmon-sysfs.h> |
38 | #include <linux/hwmon-vid.h> | |
943b0830 | 39 | #include <linux/err.h> |
9a61bf63 | 40 | #include <linux/mutex.h> |
87808be4 | 41 | #include <linux/sysfs.h> |
1da177e4 LT |
42 | #include <asm/io.h> |
43 | ||
44 | ||
91749996 | 45 | static unsigned short isa_address; |
8e9afcbb | 46 | enum chips { it87, it8712, it8716, it8718 }; |
1da177e4 LT |
47 | |
48 | #define REG 0x2e /* The register to read/write */ | |
49 | #define DEV 0x07 /* Register: Logical device select */ | |
50 | #define VAL 0x2f /* The value to read/write */ | |
51 | #define PME 0x04 /* The device with the fan registers in it */ | |
87673dd7 | 52 | #define GPIO 0x07 /* The device with the IT8718F VID value in it */ |
1da177e4 LT |
53 | #define DEVID 0x20 /* Register: Device ID */ |
54 | #define DEVREV 0x22 /* Register: Device Revision */ | |
55 | ||
56 | static inline int | |
57 | superio_inb(int reg) | |
58 | { | |
59 | outb(reg, REG); | |
60 | return inb(VAL); | |
61 | } | |
62 | ||
63 | static int superio_inw(int reg) | |
64 | { | |
65 | int val; | |
66 | outb(reg++, REG); | |
67 | val = inb(VAL) << 8; | |
68 | outb(reg, REG); | |
69 | val |= inb(VAL); | |
70 | return val; | |
71 | } | |
72 | ||
73 | static inline void | |
87673dd7 | 74 | superio_select(int ldn) |
1da177e4 LT |
75 | { |
76 | outb(DEV, REG); | |
87673dd7 | 77 | outb(ldn, VAL); |
1da177e4 LT |
78 | } |
79 | ||
80 | static inline void | |
81 | superio_enter(void) | |
82 | { | |
83 | outb(0x87, REG); | |
84 | outb(0x01, REG); | |
85 | outb(0x55, REG); | |
86 | outb(0x55, REG); | |
87 | } | |
88 | ||
89 | static inline void | |
90 | superio_exit(void) | |
91 | { | |
92 | outb(0x02, REG); | |
93 | outb(0x02, VAL); | |
94 | } | |
95 | ||
87673dd7 | 96 | /* Logical device 4 registers */ |
1da177e4 LT |
97 | #define IT8712F_DEVID 0x8712 |
98 | #define IT8705F_DEVID 0x8705 | |
17d648bf | 99 | #define IT8716F_DEVID 0x8716 |
87673dd7 | 100 | #define IT8718F_DEVID 0x8718 |
08a8f6e9 | 101 | #define IT8726F_DEVID 0x8726 |
1da177e4 LT |
102 | #define IT87_ACT_REG 0x30 |
103 | #define IT87_BASE_REG 0x60 | |
104 | ||
87673dd7 JD |
105 | /* Logical device 7 registers (IT8712F and later) */ |
106 | #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ | |
107 | #define IT87_SIO_VID_REG 0xfc /* VID value */ | |
108 | ||
1da177e4 LT |
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 | ||
87673dd7 | 115 | /* Values read from Super-I/O config space */ |
1da177e4 | 116 | static u16 chip_type; |
87673dd7 | 117 | static u8 vid_value; |
1da177e4 LT |
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 | ||
87673dd7 JD |
136 | /* The IT8718F has the VID value in a different register, in Super-I/O |
137 | configuration space. */ | |
1da177e4 | 138 | #define IT87_REG_VID 0x0a |
17d648bf JD |
139 | /* Warning: register 0x0b is used for something completely different in |
140 | new chips/revisions. I suspect only 16-bit tachometer mode will work | |
141 | for these. */ | |
1da177e4 | 142 | #define IT87_REG_FAN_DIV 0x0b |
17d648bf | 143 | #define IT87_REG_FAN_16BIT 0x0c |
1da177e4 LT |
144 | |
145 | /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ | |
146 | ||
147 | #define IT87_REG_FAN(nr) (0x0d + (nr)) | |
148 | #define IT87_REG_FAN_MIN(nr) (0x10 + (nr)) | |
17d648bf JD |
149 | #define IT87_REG_FANX(nr) (0x18 + (nr)) |
150 | #define IT87_REG_FANX_MIN(nr) (0x1b + (nr)) | |
1da177e4 LT |
151 | #define IT87_REG_FAN_MAIN_CTRL 0x13 |
152 | #define IT87_REG_FAN_CTL 0x14 | |
153 | #define IT87_REG_PWM(nr) (0x15 + (nr)) | |
154 | ||
155 | #define IT87_REG_VIN(nr) (0x20 + (nr)) | |
156 | #define IT87_REG_TEMP(nr) (0x29 + (nr)) | |
157 | ||
158 | #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) | |
159 | #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) | |
160 | #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) | |
161 | #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) | |
162 | ||
1da177e4 LT |
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 | ||
f8d0c19a JD |
207 | static const unsigned int pwm_freq[8] = { |
208 | 48000000 / 128, | |
209 | 24000000 / 128, | |
210 | 12000000 / 128, | |
211 | 8000000 / 128, | |
212 | 6000000 / 128, | |
213 | 3000000 / 128, | |
214 | 1500000 / 128, | |
215 | 750000 / 128, | |
216 | }; | |
217 | ||
1da177e4 | 218 | |
ed6bafbf JD |
219 | /* For each registered chip, we need to keep some data in memory. |
220 | The structure is dynamically allocated. */ | |
1da177e4 LT |
221 | struct it87_data { |
222 | struct i2c_client client; | |
943b0830 | 223 | struct class_device *class_dev; |
1da177e4 LT |
224 | enum chips type; |
225 | ||
9a61bf63 | 226 | struct mutex update_lock; |
1da177e4 LT |
227 | char valid; /* !=0 if following fields are valid */ |
228 | unsigned long last_updated; /* In jiffies */ | |
229 | ||
230 | u8 in[9]; /* Register value */ | |
3543a53f JD |
231 | u8 in_max[8]; /* Register value */ |
232 | u8 in_min[8]; /* Register value */ | |
9060f8bd | 233 | u8 has_fan; /* Bitfield, fans enabled */ |
17d648bf JD |
234 | u16 fan[3]; /* Register values, possibly combined */ |
235 | u16 fan_min[3]; /* Register values, possibly combined */ | |
1da177e4 LT |
236 | u8 temp[3]; /* Register value */ |
237 | u8 temp_high[3]; /* Register value */ | |
238 | u8 temp_low[3]; /* Register value */ | |
239 | u8 sensor; /* Register value */ | |
240 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
241 | u8 vid; /* Register encoding, combined */ | |
a7be58a1 | 242 | u8 vrm; |
1da177e4 LT |
243 | u32 alarms; /* Register encoding, combined */ |
244 | u8 fan_main_ctrl; /* Register value */ | |
f8d0c19a | 245 | u8 fan_ctl; /* Register value */ |
1da177e4 LT |
246 | u8 manual_pwm_ctl[3]; /* manual PWM value set by user */ |
247 | }; | |
248 | ||
249 | ||
8e9afcbb | 250 | static int it87_detect(struct i2c_adapter *adapter); |
1da177e4 LT |
251 | static int it87_detach_client(struct i2c_client *client); |
252 | ||
f6c27fc1 | 253 | static int it87_read_value(struct i2c_client *client, u8 reg); |
8e9afcbb | 254 | static void it87_write_value(struct i2c_client *client, u8 reg, u8 value); |
1da177e4 LT |
255 | static struct it87_data *it87_update_device(struct device *dev); |
256 | static int it87_check_pwm(struct i2c_client *client); | |
257 | static void it87_init_client(struct i2c_client *client, struct it87_data *data); | |
258 | ||
259 | ||
fde09509 | 260 | static struct i2c_driver it87_isa_driver = { |
cdaf7934 | 261 | .driver = { |
87218842 | 262 | .owner = THIS_MODULE, |
cdaf7934 LR |
263 | .name = "it87-isa", |
264 | }, | |
8e9afcbb | 265 | .attach_adapter = it87_detect, |
fde09509 JD |
266 | .detach_client = it87_detach_client, |
267 | }; | |
268 | ||
269 | ||
20ad93d4 JD |
270 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
271 | char *buf) | |
1da177e4 | 272 | { |
20ad93d4 JD |
273 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
274 | int nr = sensor_attr->index; | |
275 | ||
1da177e4 LT |
276 | struct it87_data *data = it87_update_device(dev); |
277 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); | |
278 | } | |
279 | ||
20ad93d4 JD |
280 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, |
281 | char *buf) | |
1da177e4 | 282 | { |
20ad93d4 JD |
283 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
284 | int nr = sensor_attr->index; | |
285 | ||
1da177e4 LT |
286 | struct it87_data *data = it87_update_device(dev); |
287 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); | |
288 | } | |
289 | ||
20ad93d4 JD |
290 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, |
291 | char *buf) | |
1da177e4 | 292 | { |
20ad93d4 JD |
293 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
294 | int nr = sensor_attr->index; | |
295 | ||
1da177e4 LT |
296 | struct it87_data *data = it87_update_device(dev); |
297 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); | |
298 | } | |
299 | ||
20ad93d4 JD |
300 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
301 | const char *buf, size_t count) | |
1da177e4 | 302 | { |
20ad93d4 JD |
303 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
304 | int nr = sensor_attr->index; | |
305 | ||
1da177e4 LT |
306 | struct i2c_client *client = to_i2c_client(dev); |
307 | struct it87_data *data = i2c_get_clientdata(client); | |
308 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
309 | ||
9a61bf63 | 310 | mutex_lock(&data->update_lock); |
1da177e4 LT |
311 | data->in_min[nr] = IN_TO_REG(val); |
312 | it87_write_value(client, IT87_REG_VIN_MIN(nr), | |
313 | data->in_min[nr]); | |
9a61bf63 | 314 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
315 | return count; |
316 | } | |
20ad93d4 JD |
317 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
318 | const char *buf, size_t count) | |
1da177e4 | 319 | { |
20ad93d4 JD |
320 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
321 | int nr = sensor_attr->index; | |
322 | ||
1da177e4 LT |
323 | struct i2c_client *client = to_i2c_client(dev); |
324 | struct it87_data *data = i2c_get_clientdata(client); | |
325 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
326 | ||
9a61bf63 | 327 | mutex_lock(&data->update_lock); |
1da177e4 LT |
328 | data->in_max[nr] = IN_TO_REG(val); |
329 | it87_write_value(client, IT87_REG_VIN_MAX(nr), | |
330 | data->in_max[nr]); | |
9a61bf63 | 331 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
332 | return count; |
333 | } | |
334 | ||
335 | #define show_in_offset(offset) \ | |
20ad93d4 JD |
336 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
337 | show_in, NULL, offset); | |
1da177e4 LT |
338 | |
339 | #define limit_in_offset(offset) \ | |
20ad93d4 JD |
340 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
341 | show_in_min, set_in_min, offset); \ | |
342 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
343 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
344 | |
345 | show_in_offset(0); | |
346 | limit_in_offset(0); | |
347 | show_in_offset(1); | |
348 | limit_in_offset(1); | |
349 | show_in_offset(2); | |
350 | limit_in_offset(2); | |
351 | show_in_offset(3); | |
352 | limit_in_offset(3); | |
353 | show_in_offset(4); | |
354 | limit_in_offset(4); | |
355 | show_in_offset(5); | |
356 | limit_in_offset(5); | |
357 | show_in_offset(6); | |
358 | limit_in_offset(6); | |
359 | show_in_offset(7); | |
360 | limit_in_offset(7); | |
361 | show_in_offset(8); | |
362 | ||
363 | /* 3 temperatures */ | |
20ad93d4 JD |
364 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
365 | char *buf) | |
1da177e4 | 366 | { |
20ad93d4 JD |
367 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
368 | int nr = sensor_attr->index; | |
369 | ||
1da177e4 LT |
370 | struct it87_data *data = it87_update_device(dev); |
371 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
372 | } | |
20ad93d4 JD |
373 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, |
374 | char *buf) | |
1da177e4 | 375 | { |
20ad93d4 JD |
376 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
377 | int nr = sensor_attr->index; | |
378 | ||
1da177e4 LT |
379 | struct it87_data *data = it87_update_device(dev); |
380 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); | |
381 | } | |
20ad93d4 JD |
382 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
383 | char *buf) | |
1da177e4 | 384 | { |
20ad93d4 JD |
385 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
386 | int nr = sensor_attr->index; | |
387 | ||
1da177e4 LT |
388 | struct it87_data *data = it87_update_device(dev); |
389 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); | |
390 | } | |
20ad93d4 JD |
391 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
392 | const char *buf, size_t count) | |
1da177e4 | 393 | { |
20ad93d4 JD |
394 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
395 | int nr = sensor_attr->index; | |
396 | ||
1da177e4 LT |
397 | struct i2c_client *client = to_i2c_client(dev); |
398 | struct it87_data *data = i2c_get_clientdata(client); | |
399 | int val = simple_strtol(buf, NULL, 10); | |
400 | ||
9a61bf63 | 401 | mutex_lock(&data->update_lock); |
1da177e4 LT |
402 | data->temp_high[nr] = TEMP_TO_REG(val); |
403 | it87_write_value(client, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); | |
9a61bf63 | 404 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
405 | return count; |
406 | } | |
20ad93d4 JD |
407 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
408 | const char *buf, size_t count) | |
1da177e4 | 409 | { |
20ad93d4 JD |
410 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
411 | int nr = sensor_attr->index; | |
412 | ||
1da177e4 LT |
413 | struct i2c_client *client = to_i2c_client(dev); |
414 | struct it87_data *data = i2c_get_clientdata(client); | |
415 | int val = simple_strtol(buf, NULL, 10); | |
416 | ||
9a61bf63 | 417 | mutex_lock(&data->update_lock); |
1da177e4 LT |
418 | data->temp_low[nr] = TEMP_TO_REG(val); |
419 | it87_write_value(client, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); | |
9a61bf63 | 420 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
421 | return count; |
422 | } | |
423 | #define show_temp_offset(offset) \ | |
20ad93d4 JD |
424 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
425 | show_temp, NULL, offset - 1); \ | |
426 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
427 | show_temp_max, set_temp_max, offset - 1); \ | |
428 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
429 | show_temp_min, set_temp_min, offset - 1); | |
1da177e4 LT |
430 | |
431 | show_temp_offset(1); | |
432 | show_temp_offset(2); | |
433 | show_temp_offset(3); | |
434 | ||
20ad93d4 JD |
435 | static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, |
436 | char *buf) | |
1da177e4 | 437 | { |
20ad93d4 JD |
438 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
439 | int nr = sensor_attr->index; | |
440 | ||
1da177e4 LT |
441 | struct it87_data *data = it87_update_device(dev); |
442 | u8 reg = data->sensor; /* In case the value is updated while we use it */ | |
443 | ||
444 | if (reg & (1 << nr)) | |
445 | return sprintf(buf, "3\n"); /* thermal diode */ | |
446 | if (reg & (8 << nr)) | |
447 | return sprintf(buf, "2\n"); /* thermistor */ | |
448 | return sprintf(buf, "0\n"); /* disabled */ | |
449 | } | |
20ad93d4 JD |
450 | static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, |
451 | const char *buf, size_t count) | |
1da177e4 | 452 | { |
20ad93d4 JD |
453 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
454 | int nr = sensor_attr->index; | |
455 | ||
1da177e4 LT |
456 | struct i2c_client *client = to_i2c_client(dev); |
457 | struct it87_data *data = i2c_get_clientdata(client); | |
458 | int val = simple_strtol(buf, NULL, 10); | |
459 | ||
9a61bf63 | 460 | mutex_lock(&data->update_lock); |
1da177e4 LT |
461 | |
462 | data->sensor &= ~(1 << nr); | |
463 | data->sensor &= ~(8 << nr); | |
464 | /* 3 = thermal diode; 2 = thermistor; 0 = disabled */ | |
465 | if (val == 3) | |
466 | data->sensor |= 1 << nr; | |
467 | else if (val == 2) | |
468 | data->sensor |= 8 << nr; | |
469 | else if (val != 0) { | |
9a61bf63 | 470 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
471 | return -EINVAL; |
472 | } | |
473 | it87_write_value(client, IT87_REG_TEMP_ENABLE, data->sensor); | |
9a61bf63 | 474 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
475 | return count; |
476 | } | |
477 | #define show_sensor_offset(offset) \ | |
20ad93d4 JD |
478 | static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ |
479 | show_sensor, set_sensor, offset - 1); | |
1da177e4 LT |
480 | |
481 | show_sensor_offset(1); | |
482 | show_sensor_offset(2); | |
483 | show_sensor_offset(3); | |
484 | ||
485 | /* 3 Fans */ | |
20ad93d4 JD |
486 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
487 | char *buf) | |
1da177e4 | 488 | { |
20ad93d4 JD |
489 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
490 | int nr = sensor_attr->index; | |
491 | ||
1da177e4 LT |
492 | struct it87_data *data = it87_update_device(dev); |
493 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr], | |
494 | DIV_FROM_REG(data->fan_div[nr]))); | |
495 | } | |
20ad93d4 JD |
496 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
497 | char *buf) | |
1da177e4 | 498 | { |
20ad93d4 JD |
499 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
500 | int nr = sensor_attr->index; | |
501 | ||
1da177e4 LT |
502 | struct it87_data *data = it87_update_device(dev); |
503 | return sprintf(buf,"%d\n", | |
504 | FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); | |
505 | } | |
20ad93d4 JD |
506 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
507 | char *buf) | |
1da177e4 | 508 | { |
20ad93d4 JD |
509 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
510 | int nr = sensor_attr->index; | |
511 | ||
1da177e4 LT |
512 | struct it87_data *data = it87_update_device(dev); |
513 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
514 | } | |
20ad93d4 JD |
515 | static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, |
516 | char *buf) | |
1da177e4 | 517 | { |
20ad93d4 JD |
518 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
519 | int nr = sensor_attr->index; | |
520 | ||
1da177e4 LT |
521 | struct it87_data *data = it87_update_device(dev); |
522 | return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0); | |
523 | } | |
20ad93d4 JD |
524 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
525 | char *buf) | |
1da177e4 | 526 | { |
20ad93d4 JD |
527 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
528 | int nr = sensor_attr->index; | |
529 | ||
1da177e4 LT |
530 | struct it87_data *data = it87_update_device(dev); |
531 | return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]); | |
532 | } | |
f8d0c19a JD |
533 | static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, |
534 | char *buf) | |
535 | { | |
536 | struct it87_data *data = it87_update_device(dev); | |
537 | int index = (data->fan_ctl >> 4) & 0x07; | |
538 | ||
539 | return sprintf(buf, "%u\n", pwm_freq[index]); | |
540 | } | |
20ad93d4 JD |
541 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
542 | const char *buf, size_t count) | |
1da177e4 | 543 | { |
20ad93d4 JD |
544 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
545 | int nr = sensor_attr->index; | |
546 | ||
1da177e4 LT |
547 | struct i2c_client *client = to_i2c_client(dev); |
548 | struct it87_data *data = i2c_get_clientdata(client); | |
549 | int val = simple_strtol(buf, NULL, 10); | |
7f999aa7 | 550 | u8 reg; |
1da177e4 | 551 | |
9a61bf63 | 552 | mutex_lock(&data->update_lock); |
7f999aa7 | 553 | reg = it87_read_value(client, IT87_REG_FAN_DIV); |
07eab46d JD |
554 | switch (nr) { |
555 | case 0: data->fan_div[nr] = reg & 0x07; break; | |
556 | case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break; | |
557 | case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break; | |
558 | } | |
559 | ||
1da177e4 LT |
560 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
561 | it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 562 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
563 | return count; |
564 | } | |
20ad93d4 JD |
565 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
566 | const char *buf, size_t count) | |
1da177e4 | 567 | { |
20ad93d4 JD |
568 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
569 | int nr = sensor_attr->index; | |
570 | ||
1da177e4 LT |
571 | struct i2c_client *client = to_i2c_client(dev); |
572 | struct it87_data *data = i2c_get_clientdata(client); | |
b9e349f7 | 573 | unsigned long val = simple_strtoul(buf, NULL, 10); |
8ab4ec3e | 574 | int min; |
1da177e4 LT |
575 | u8 old; |
576 | ||
9a61bf63 | 577 | mutex_lock(&data->update_lock); |
1da177e4 LT |
578 | old = it87_read_value(client, IT87_REG_FAN_DIV); |
579 | ||
8ab4ec3e JD |
580 | /* Save fan min limit */ |
581 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); | |
1da177e4 LT |
582 | |
583 | switch (nr) { | |
584 | case 0: | |
585 | case 1: | |
586 | data->fan_div[nr] = DIV_TO_REG(val); | |
587 | break; | |
588 | case 2: | |
589 | if (val < 8) | |
590 | data->fan_div[nr] = 1; | |
591 | else | |
592 | data->fan_div[nr] = 3; | |
593 | } | |
594 | val = old & 0x80; | |
595 | val |= (data->fan_div[0] & 0x07); | |
596 | val |= (data->fan_div[1] & 0x07) << 3; | |
597 | if (data->fan_div[2] == 3) | |
598 | val |= 0x1 << 6; | |
599 | it87_write_value(client, IT87_REG_FAN_DIV, val); | |
600 | ||
8ab4ec3e JD |
601 | /* Restore fan min limit */ |
602 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
603 | it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
604 | ||
9a61bf63 | 605 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
606 | return count; |
607 | } | |
20ad93d4 JD |
608 | static ssize_t set_pwm_enable(struct device *dev, |
609 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 610 | { |
20ad93d4 JD |
611 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
612 | int nr = sensor_attr->index; | |
613 | ||
1da177e4 LT |
614 | struct i2c_client *client = to_i2c_client(dev); |
615 | struct it87_data *data = i2c_get_clientdata(client); | |
616 | int val = simple_strtol(buf, NULL, 10); | |
617 | ||
9a61bf63 | 618 | mutex_lock(&data->update_lock); |
1da177e4 LT |
619 | |
620 | if (val == 0) { | |
621 | int tmp; | |
622 | /* make sure the fan is on when in on/off mode */ | |
623 | tmp = it87_read_value(client, IT87_REG_FAN_CTL); | |
624 | it87_write_value(client, IT87_REG_FAN_CTL, tmp | (1 << nr)); | |
625 | /* set on/off mode */ | |
626 | data->fan_main_ctrl &= ~(1 << nr); | |
627 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
628 | } else if (val == 1) { | |
629 | /* set SmartGuardian mode */ | |
630 | data->fan_main_ctrl |= (1 << nr); | |
631 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
632 | /* set saved pwm value, clear FAN_CTLX PWM mode bit */ | |
633 | it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); | |
634 | } else { | |
9a61bf63 | 635 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
636 | return -EINVAL; |
637 | } | |
638 | ||
9a61bf63 | 639 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
640 | return count; |
641 | } | |
20ad93d4 JD |
642 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
643 | const char *buf, size_t count) | |
1da177e4 | 644 | { |
20ad93d4 JD |
645 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
646 | int nr = sensor_attr->index; | |
647 | ||
1da177e4 LT |
648 | struct i2c_client *client = to_i2c_client(dev); |
649 | struct it87_data *data = i2c_get_clientdata(client); | |
650 | int val = simple_strtol(buf, NULL, 10); | |
651 | ||
652 | if (val < 0 || val > 255) | |
653 | return -EINVAL; | |
654 | ||
9a61bf63 | 655 | mutex_lock(&data->update_lock); |
1da177e4 LT |
656 | data->manual_pwm_ctl[nr] = val; |
657 | if (data->fan_main_ctrl & (1 << nr)) | |
658 | it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); | |
9a61bf63 | 659 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
660 | return count; |
661 | } | |
f8d0c19a JD |
662 | static ssize_t set_pwm_freq(struct device *dev, |
663 | struct device_attribute *attr, const char *buf, size_t count) | |
664 | { | |
665 | struct i2c_client *client = to_i2c_client(dev); | |
666 | struct it87_data *data = i2c_get_clientdata(client); | |
667 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
668 | int i; | |
669 | ||
670 | /* Search for the nearest available frequency */ | |
671 | for (i = 0; i < 7; i++) { | |
672 | if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2) | |
673 | break; | |
674 | } | |
675 | ||
676 | mutex_lock(&data->update_lock); | |
677 | data->fan_ctl = it87_read_value(client, IT87_REG_FAN_CTL) & 0x8f; | |
678 | data->fan_ctl |= i << 4; | |
679 | it87_write_value(client, IT87_REG_FAN_CTL, data->fan_ctl); | |
680 | mutex_unlock(&data->update_lock); | |
681 | ||
682 | return count; | |
683 | } | |
1da177e4 | 684 | |
20ad93d4 JD |
685 | #define show_fan_offset(offset) \ |
686 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
687 | show_fan, NULL, offset - 1); \ | |
688 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
689 | show_fan_min, set_fan_min, offset - 1); \ | |
690 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
691 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
692 | |
693 | show_fan_offset(1); | |
694 | show_fan_offset(2); | |
695 | show_fan_offset(3); | |
696 | ||
697 | #define show_pwm_offset(offset) \ | |
20ad93d4 JD |
698 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
699 | show_pwm_enable, set_pwm_enable, offset - 1); \ | |
700 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ | |
f8d0c19a JD |
701 | show_pwm, set_pwm, offset - 1); \ |
702 | static DEVICE_ATTR(pwm##offset##_freq, \ | |
703 | (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \ | |
704 | show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); | |
1da177e4 LT |
705 | |
706 | show_pwm_offset(1); | |
707 | show_pwm_offset(2); | |
708 | show_pwm_offset(3); | |
709 | ||
17d648bf JD |
710 | /* A different set of callbacks for 16-bit fans */ |
711 | static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, | |
712 | char *buf) | |
713 | { | |
714 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
715 | int nr = sensor_attr->index; | |
716 | struct it87_data *data = it87_update_device(dev); | |
717 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); | |
718 | } | |
719 | ||
720 | static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, | |
721 | char *buf) | |
722 | { | |
723 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
724 | int nr = sensor_attr->index; | |
725 | struct it87_data *data = it87_update_device(dev); | |
726 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); | |
727 | } | |
728 | ||
729 | static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, | |
730 | const char *buf, size_t count) | |
731 | { | |
732 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
733 | int nr = sensor_attr->index; | |
734 | struct i2c_client *client = to_i2c_client(dev); | |
735 | struct it87_data *data = i2c_get_clientdata(client); | |
736 | int val = simple_strtol(buf, NULL, 10); | |
737 | ||
738 | mutex_lock(&data->update_lock); | |
739 | data->fan_min[nr] = FAN16_TO_REG(val); | |
740 | it87_write_value(client, IT87_REG_FAN_MIN(nr), | |
741 | data->fan_min[nr] & 0xff); | |
742 | it87_write_value(client, IT87_REG_FANX_MIN(nr), | |
743 | data->fan_min[nr] >> 8); | |
744 | mutex_unlock(&data->update_lock); | |
745 | return count; | |
746 | } | |
747 | ||
748 | /* We want to use the same sysfs file names as 8-bit fans, but we need | |
749 | different variable names, so we have to use SENSOR_ATTR instead of | |
750 | SENSOR_DEVICE_ATTR. */ | |
751 | #define show_fan16_offset(offset) \ | |
752 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ | |
753 | = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ | |
754 | show_fan16, NULL, offset - 1); \ | |
755 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ | |
756 | = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
757 | show_fan16_min, set_fan16_min, offset - 1) | |
758 | ||
759 | show_fan16_offset(1); | |
760 | show_fan16_offset(2); | |
761 | show_fan16_offset(3); | |
762 | ||
1da177e4 | 763 | /* Alarms */ |
30f74292 | 764 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
765 | { |
766 | struct it87_data *data = it87_update_device(dev); | |
68188ba7 | 767 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 | 768 | } |
1d66c64c | 769 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4 LT |
770 | |
771 | static ssize_t | |
30f74292 | 772 | show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
773 | { |
774 | struct it87_data *data = it87_update_device(dev); | |
a7be58a1 | 775 | return sprintf(buf, "%u\n", data->vrm); |
1da177e4 LT |
776 | } |
777 | static ssize_t | |
30f74292 | 778 | store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
779 | { |
780 | struct i2c_client *client = to_i2c_client(dev); | |
781 | struct it87_data *data = i2c_get_clientdata(client); | |
782 | u32 val; | |
783 | ||
784 | val = simple_strtoul(buf, NULL, 10); | |
785 | data->vrm = val; | |
786 | ||
787 | return count; | |
788 | } | |
789 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
1da177e4 LT |
790 | |
791 | static ssize_t | |
30f74292 | 792 | show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
793 | { |
794 | struct it87_data *data = it87_update_device(dev); | |
795 | return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); | |
796 | } | |
797 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
87808be4 JD |
798 | |
799 | static struct attribute *it87_attributes[] = { | |
800 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
801 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
802 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
803 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
804 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
805 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
806 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
807 | &sensor_dev_attr_in7_input.dev_attr.attr, | |
808 | &sensor_dev_attr_in8_input.dev_attr.attr, | |
809 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
810 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
811 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
812 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
813 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
814 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
815 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
816 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
817 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
818 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
819 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
820 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
821 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
822 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
823 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
824 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
825 | ||
826 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
827 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
828 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
829 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
830 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
831 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
832 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
833 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
834 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
835 | &sensor_dev_attr_temp1_type.dev_attr.attr, | |
836 | &sensor_dev_attr_temp2_type.dev_attr.attr, | |
837 | &sensor_dev_attr_temp3_type.dev_attr.attr, | |
838 | ||
839 | &dev_attr_alarms.attr, | |
840 | NULL | |
841 | }; | |
842 | ||
843 | static const struct attribute_group it87_group = { | |
844 | .attrs = it87_attributes, | |
845 | }; | |
846 | ||
847 | static struct attribute *it87_attributes_opt[] = { | |
848 | &sensor_dev_attr_fan1_input16.dev_attr.attr, | |
849 | &sensor_dev_attr_fan1_min16.dev_attr.attr, | |
850 | &sensor_dev_attr_fan2_input16.dev_attr.attr, | |
851 | &sensor_dev_attr_fan2_min16.dev_attr.attr, | |
852 | &sensor_dev_attr_fan3_input16.dev_attr.attr, | |
853 | &sensor_dev_attr_fan3_min16.dev_attr.attr, | |
854 | ||
855 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
856 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
857 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
858 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
859 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
860 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
861 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
862 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
863 | &sensor_dev_attr_fan3_div.dev_attr.attr, | |
864 | ||
865 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
866 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
867 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
868 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
869 | &sensor_dev_attr_pwm2.dev_attr.attr, | |
870 | &sensor_dev_attr_pwm3.dev_attr.attr, | |
871 | ||
872 | &dev_attr_vrm.attr, | |
873 | &dev_attr_cpu0_vid.attr, | |
874 | NULL | |
875 | }; | |
876 | ||
877 | static const struct attribute_group it87_group_opt = { | |
878 | .attrs = it87_attributes_opt, | |
879 | }; | |
1da177e4 | 880 | |
2d8672c5 | 881 | /* SuperIO detection - will change isa_address if a chip is found */ |
91749996 | 882 | static int __init it87_find(unsigned short *address) |
1da177e4 LT |
883 | { |
884 | int err = -ENODEV; | |
885 | ||
886 | superio_enter(); | |
887 | chip_type = superio_inw(DEVID); | |
888 | if (chip_type != IT8712F_DEVID | |
17d648bf | 889 | && chip_type != IT8716F_DEVID |
08a8f6e9 | 890 | && chip_type != IT8726F_DEVID |
87673dd7 | 891 | && chip_type != IT8718F_DEVID |
1da177e4 LT |
892 | && chip_type != IT8705F_DEVID) |
893 | goto exit; | |
894 | ||
87673dd7 | 895 | superio_select(PME); |
1da177e4 LT |
896 | if (!(superio_inb(IT87_ACT_REG) & 0x01)) { |
897 | pr_info("it87: Device not activated, skipping\n"); | |
898 | goto exit; | |
899 | } | |
900 | ||
901 | *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); | |
902 | if (*address == 0) { | |
903 | pr_info("it87: Base address not set, skipping\n"); | |
904 | goto exit; | |
905 | } | |
906 | ||
907 | err = 0; | |
908 | pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", | |
909 | chip_type, *address, superio_inb(DEVREV) & 0x0f); | |
910 | ||
87673dd7 JD |
911 | /* Read GPIO config and VID value from LDN 7 (GPIO) */ |
912 | if (chip_type != IT8705F_DEVID) { | |
913 | int reg; | |
914 | ||
915 | superio_select(GPIO); | |
916 | if (chip_type == it8718) | |
917 | vid_value = superio_inb(IT87_SIO_VID_REG); | |
918 | ||
919 | reg = superio_inb(IT87_SIO_PINX2_REG); | |
920 | if (reg & (1 << 0)) | |
921 | pr_info("it87: in3 is VCC (+5V)\n"); | |
922 | if (reg & (1 << 1)) | |
923 | pr_info("it87: in7 is VCCH (+5V Stand-By)\n"); | |
924 | } | |
925 | ||
1da177e4 LT |
926 | exit: |
927 | superio_exit(); | |
928 | return err; | |
929 | } | |
930 | ||
2ed2dc3c | 931 | /* This function is called by i2c_probe */ |
8e9afcbb | 932 | static int it87_detect(struct i2c_adapter *adapter) |
1da177e4 | 933 | { |
1da177e4 LT |
934 | struct i2c_client *new_client; |
935 | struct it87_data *data; | |
936 | int err = 0; | |
8e9afcbb | 937 | const char *name; |
1da177e4 LT |
938 | int enable_pwm_interface; |
939 | ||
1da177e4 | 940 | /* Reserve the ISA region */ |
8e9afcbb JD |
941 | if (!request_region(isa_address, IT87_EXTENT, |
942 | it87_isa_driver.driver.name)){ | |
943 | err = -EBUSY; | |
944 | goto ERROR0; | |
945 | } | |
1da177e4 | 946 | |
ba9c2e8d | 947 | if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { |
1da177e4 LT |
948 | err = -ENOMEM; |
949 | goto ERROR1; | |
950 | } | |
1da177e4 LT |
951 | |
952 | new_client = &data->client; | |
1da177e4 | 953 | i2c_set_clientdata(new_client, data); |
8e9afcbb | 954 | new_client->addr = isa_address; |
1da177e4 | 955 | new_client->adapter = adapter; |
8e9afcbb | 956 | new_client->driver = &it87_isa_driver; |
1da177e4 LT |
957 | |
958 | /* Now, we do the remaining detection. */ | |
8e9afcbb JD |
959 | if ((it87_read_value(new_client, IT87_REG_CONFIG) & 0x80) |
960 | || it87_read_value(new_client, IT87_REG_CHIPID) != 0x90) { | |
961 | err = -ENODEV; | |
962 | goto ERROR2; | |
1da177e4 LT |
963 | } |
964 | ||
965 | /* Determine the chip type. */ | |
8e9afcbb JD |
966 | switch (chip_type) { |
967 | case IT8712F_DEVID: | |
968 | data->type = it8712; | |
1da177e4 | 969 | name = "it8712"; |
8e9afcbb | 970 | break; |
08a8f6e9 RM |
971 | case IT8726F_DEVID: |
972 | /* fall through */ | |
8e9afcbb JD |
973 | case IT8716F_DEVID: |
974 | data->type = it8716; | |
17d648bf | 975 | name = "it8716"; |
8e9afcbb JD |
976 | break; |
977 | case IT8718F_DEVID: | |
978 | data->type = it8718; | |
87673dd7 | 979 | name = "it8718"; |
8e9afcbb JD |
980 | break; |
981 | default: | |
982 | data->type = it87; | |
983 | name = "it87"; | |
1da177e4 LT |
984 | } |
985 | ||
986 | /* Fill in the remaining client fields and put it into the global list */ | |
987 | strlcpy(new_client->name, name, I2C_NAME_SIZE); | |
9a61bf63 | 988 | mutex_init(&data->update_lock); |
1da177e4 LT |
989 | |
990 | /* Tell the I2C layer a new client has arrived */ | |
991 | if ((err = i2c_attach_client(new_client))) | |
992 | goto ERROR2; | |
993 | ||
994 | /* Check PWM configuration */ | |
995 | enable_pwm_interface = it87_check_pwm(new_client); | |
996 | ||
997 | /* Initialize the IT87 chip */ | |
998 | it87_init_client(new_client, data); | |
999 | ||
1000 | /* Register sysfs hooks */ | |
87808be4 | 1001 | if ((err = sysfs_create_group(&new_client->dev.kobj, &it87_group))) |
943b0830 | 1002 | goto ERROR3; |
17d648bf | 1003 | |
9060f8bd | 1004 | /* Do not create fan files for disabled fans */ |
87673dd7 JD |
1005 | if (data->type == it8716 || data->type == it8718) { |
1006 | /* 16-bit tachometers */ | |
9060f8bd | 1007 | if (data->has_fan & (1 << 0)) { |
87808be4 JD |
1008 | if ((err = device_create_file(&new_client->dev, |
1009 | &sensor_dev_attr_fan1_input16.dev_attr)) | |
1010 | || (err = device_create_file(&new_client->dev, | |
1011 | &sensor_dev_attr_fan1_min16.dev_attr))) | |
1012 | goto ERROR4; | |
9060f8bd JD |
1013 | } |
1014 | if (data->has_fan & (1 << 1)) { | |
87808be4 JD |
1015 | if ((err = device_create_file(&new_client->dev, |
1016 | &sensor_dev_attr_fan2_input16.dev_attr)) | |
1017 | || (err = device_create_file(&new_client->dev, | |
1018 | &sensor_dev_attr_fan2_min16.dev_attr))) | |
1019 | goto ERROR4; | |
9060f8bd JD |
1020 | } |
1021 | if (data->has_fan & (1 << 2)) { | |
87808be4 JD |
1022 | if ((err = device_create_file(&new_client->dev, |
1023 | &sensor_dev_attr_fan3_input16.dev_attr)) | |
1024 | || (err = device_create_file(&new_client->dev, | |
1025 | &sensor_dev_attr_fan3_min16.dev_attr))) | |
1026 | goto ERROR4; | |
9060f8bd | 1027 | } |
17d648bf | 1028 | } else { |
87673dd7 | 1029 | /* 8-bit tachometers with clock divider */ |
9060f8bd | 1030 | if (data->has_fan & (1 << 0)) { |
87808be4 JD |
1031 | if ((err = device_create_file(&new_client->dev, |
1032 | &sensor_dev_attr_fan1_input.dev_attr)) | |
1033 | || (err = device_create_file(&new_client->dev, | |
1034 | &sensor_dev_attr_fan1_min.dev_attr)) | |
1035 | || (err = device_create_file(&new_client->dev, | |
1036 | &sensor_dev_attr_fan1_div.dev_attr))) | |
1037 | goto ERROR4; | |
9060f8bd JD |
1038 | } |
1039 | if (data->has_fan & (1 << 1)) { | |
87808be4 JD |
1040 | if ((err = device_create_file(&new_client->dev, |
1041 | &sensor_dev_attr_fan2_input.dev_attr)) | |
1042 | || (err = device_create_file(&new_client->dev, | |
1043 | &sensor_dev_attr_fan2_min.dev_attr)) | |
1044 | || (err = device_create_file(&new_client->dev, | |
1045 | &sensor_dev_attr_fan2_div.dev_attr))) | |
1046 | goto ERROR4; | |
9060f8bd JD |
1047 | } |
1048 | if (data->has_fan & (1 << 2)) { | |
87808be4 JD |
1049 | if ((err = device_create_file(&new_client->dev, |
1050 | &sensor_dev_attr_fan3_input.dev_attr)) | |
1051 | || (err = device_create_file(&new_client->dev, | |
1052 | &sensor_dev_attr_fan3_min.dev_attr)) | |
1053 | || (err = device_create_file(&new_client->dev, | |
1054 | &sensor_dev_attr_fan3_div.dev_attr))) | |
1055 | goto ERROR4; | |
9060f8bd | 1056 | } |
17d648bf JD |
1057 | } |
1058 | ||
1da177e4 | 1059 | if (enable_pwm_interface) { |
87808be4 JD |
1060 | if ((err = device_create_file(&new_client->dev, |
1061 | &sensor_dev_attr_pwm1_enable.dev_attr)) | |
1062 | || (err = device_create_file(&new_client->dev, | |
1063 | &sensor_dev_attr_pwm2_enable.dev_attr)) | |
1064 | || (err = device_create_file(&new_client->dev, | |
1065 | &sensor_dev_attr_pwm3_enable.dev_attr)) | |
1066 | || (err = device_create_file(&new_client->dev, | |
1067 | &sensor_dev_attr_pwm1.dev_attr)) | |
1068 | || (err = device_create_file(&new_client->dev, | |
1069 | &sensor_dev_attr_pwm2.dev_attr)) | |
1070 | || (err = device_create_file(&new_client->dev, | |
f8d0c19a JD |
1071 | &sensor_dev_attr_pwm3.dev_attr)) |
1072 | || (err = device_create_file(&new_client->dev, | |
1073 | &dev_attr_pwm1_freq)) | |
1074 | || (err = device_create_file(&new_client->dev, | |
1075 | &dev_attr_pwm2_freq)) | |
1076 | || (err = device_create_file(&new_client->dev, | |
1077 | &dev_attr_pwm3_freq))) | |
87808be4 | 1078 | goto ERROR4; |
1da177e4 LT |
1079 | } |
1080 | ||
87673dd7 JD |
1081 | if (data->type == it8712 || data->type == it8716 |
1082 | || data->type == it8718) { | |
303760b4 | 1083 | data->vrm = vid_which_vrm(); |
87673dd7 JD |
1084 | /* VID reading from Super-I/O config space if available */ |
1085 | data->vid = vid_value; | |
87808be4 JD |
1086 | if ((err = device_create_file(&new_client->dev, |
1087 | &dev_attr_vrm)) | |
1088 | || (err = device_create_file(&new_client->dev, | |
1089 | &dev_attr_cpu0_vid))) | |
1090 | goto ERROR4; | |
1091 | } | |
1092 | ||
1093 | data->class_dev = hwmon_device_register(&new_client->dev); | |
1094 | if (IS_ERR(data->class_dev)) { | |
1095 | err = PTR_ERR(data->class_dev); | |
1096 | goto ERROR4; | |
1da177e4 LT |
1097 | } |
1098 | ||
1099 | return 0; | |
1100 | ||
87808be4 JD |
1101 | ERROR4: |
1102 | sysfs_remove_group(&new_client->dev.kobj, &it87_group); | |
1103 | sysfs_remove_group(&new_client->dev.kobj, &it87_group_opt); | |
943b0830 MH |
1104 | ERROR3: |
1105 | i2c_detach_client(new_client); | |
1da177e4 LT |
1106 | ERROR2: |
1107 | kfree(data); | |
1108 | ERROR1: | |
8e9afcbb | 1109 | release_region(isa_address, IT87_EXTENT); |
1da177e4 LT |
1110 | ERROR0: |
1111 | return err; | |
1112 | } | |
1113 | ||
1114 | static int it87_detach_client(struct i2c_client *client) | |
1115 | { | |
943b0830 | 1116 | struct it87_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
1117 | int err; |
1118 | ||
943b0830 | 1119 | hwmon_device_unregister(data->class_dev); |
87808be4 JD |
1120 | sysfs_remove_group(&client->dev.kobj, &it87_group); |
1121 | sysfs_remove_group(&client->dev.kobj, &it87_group_opt); | |
943b0830 | 1122 | |
7bef5594 | 1123 | if ((err = i2c_detach_client(client))) |
1da177e4 | 1124 | return err; |
1da177e4 | 1125 | |
8e9afcbb | 1126 | release_region(client->addr, IT87_EXTENT); |
943b0830 | 1127 | kfree(data); |
1da177e4 LT |
1128 | |
1129 | return 0; | |
1130 | } | |
1131 | ||
7f999aa7 | 1132 | /* Must be called with data->update_lock held, except during initialization. |
1da177e4 LT |
1133 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1134 | would slow down the IT87 access and should not be necessary. */ | |
1135 | static int it87_read_value(struct i2c_client *client, u8 reg) | |
1136 | { | |
8e9afcbb | 1137 | outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); |
7f999aa7 | 1138 | return inb_p(client->addr + IT87_DATA_REG_OFFSET); |
1da177e4 LT |
1139 | } |
1140 | ||
7f999aa7 | 1141 | /* Must be called with data->update_lock held, except during initialization. |
1da177e4 LT |
1142 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1143 | would slow down the IT87 access and should not be necessary. */ | |
8e9afcbb | 1144 | static void it87_write_value(struct i2c_client *client, u8 reg, u8 value) |
1da177e4 | 1145 | { |
8e9afcbb JD |
1146 | outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); |
1147 | outb_p(value, client->addr + IT87_DATA_REG_OFFSET); | |
1da177e4 LT |
1148 | } |
1149 | ||
1150 | /* Return 1 if and only if the PWM interface is safe to use */ | |
1151 | static int it87_check_pwm(struct i2c_client *client) | |
1152 | { | |
1153 | /* Some BIOSes fail to correctly configure the IT87 fans. All fans off | |
1154 | * and polarity set to active low is sign that this is the case so we | |
1155 | * disable pwm control to protect the user. */ | |
1156 | int tmp = it87_read_value(client, IT87_REG_FAN_CTL); | |
1157 | if ((tmp & 0x87) == 0) { | |
1158 | if (fix_pwm_polarity) { | |
1159 | /* The user asks us to attempt a chip reconfiguration. | |
1160 | * This means switching to active high polarity and | |
1161 | * inverting all fan speed values. */ | |
1162 | int i; | |
1163 | u8 pwm[3]; | |
1164 | ||
1165 | for (i = 0; i < 3; i++) | |
1166 | pwm[i] = it87_read_value(client, | |
1167 | IT87_REG_PWM(i)); | |
1168 | ||
1169 | /* If any fan is in automatic pwm mode, the polarity | |
1170 | * might be correct, as suspicious as it seems, so we | |
1171 | * better don't change anything (but still disable the | |
1172 | * PWM interface). */ | |
1173 | if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { | |
1174 | dev_info(&client->dev, "Reconfiguring PWM to " | |
1175 | "active high polarity\n"); | |
1176 | it87_write_value(client, IT87_REG_FAN_CTL, | |
1177 | tmp | 0x87); | |
1178 | for (i = 0; i < 3; i++) | |
1179 | it87_write_value(client, | |
1180 | IT87_REG_PWM(i), | |
1181 | 0x7f & ~pwm[i]); | |
1182 | return 1; | |
1183 | } | |
1184 | ||
1185 | dev_info(&client->dev, "PWM configuration is " | |
1186 | "too broken to be fixed\n"); | |
1187 | } | |
1188 | ||
1189 | dev_info(&client->dev, "Detected broken BIOS " | |
1190 | "defaults, disabling PWM interface\n"); | |
1191 | return 0; | |
1192 | } else if (fix_pwm_polarity) { | |
1193 | dev_info(&client->dev, "PWM configuration looks " | |
1194 | "sane, won't touch\n"); | |
1195 | } | |
1196 | ||
1197 | return 1; | |
1198 | } | |
1199 | ||
1200 | /* Called when we have found a new IT87. */ | |
1201 | static void it87_init_client(struct i2c_client *client, struct it87_data *data) | |
1202 | { | |
1203 | int tmp, i; | |
1204 | ||
1205 | /* initialize to sane defaults: | |
1206 | * - if the chip is in manual pwm mode, this will be overwritten with | |
1207 | * the actual settings on the chip (so in this case, initialization | |
1208 | * is not needed) | |
1209 | * - if in automatic or on/off mode, we could switch to manual mode, | |
1210 | * read the registers and set manual_pwm_ctl accordingly, but currently | |
1211 | * this is not implemented, so we initialize to something sane */ | |
1212 | for (i = 0; i < 3; i++) { | |
1213 | data->manual_pwm_ctl[i] = 0xff; | |
1214 | } | |
1215 | ||
c5df9b7a JD |
1216 | /* Some chips seem to have default value 0xff for all limit |
1217 | * registers. For low voltage limits it makes no sense and triggers | |
1218 | * alarms, so change to 0 instead. For high temperature limits, it | |
1219 | * means -1 degree C, which surprisingly doesn't trigger an alarm, | |
1220 | * but is still confusing, so change to 127 degrees C. */ | |
1221 | for (i = 0; i < 8; i++) { | |
1222 | tmp = it87_read_value(client, IT87_REG_VIN_MIN(i)); | |
1223 | if (tmp == 0xff) | |
1224 | it87_write_value(client, IT87_REG_VIN_MIN(i), 0); | |
1225 | } | |
1226 | for (i = 0; i < 3; i++) { | |
1227 | tmp = it87_read_value(client, IT87_REG_TEMP_HIGH(i)); | |
1228 | if (tmp == 0xff) | |
1229 | it87_write_value(client, IT87_REG_TEMP_HIGH(i), 127); | |
1230 | } | |
1231 | ||
1da177e4 LT |
1232 | /* Check if temperature channnels are reset manually or by some reason */ |
1233 | tmp = it87_read_value(client, IT87_REG_TEMP_ENABLE); | |
1234 | if ((tmp & 0x3f) == 0) { | |
1235 | /* Temp1,Temp3=thermistor; Temp2=thermal diode */ | |
1236 | tmp = (tmp & 0xc0) | 0x2a; | |
1237 | it87_write_value(client, IT87_REG_TEMP_ENABLE, tmp); | |
1238 | } | |
1239 | data->sensor = tmp; | |
1240 | ||
1241 | /* Check if voltage monitors are reset manually or by some reason */ | |
1242 | tmp = it87_read_value(client, IT87_REG_VIN_ENABLE); | |
1243 | if ((tmp & 0xff) == 0) { | |
1244 | /* Enable all voltage monitors */ | |
1245 | it87_write_value(client, IT87_REG_VIN_ENABLE, 0xff); | |
1246 | } | |
1247 | ||
1248 | /* Check if tachometers are reset manually or by some reason */ | |
1249 | data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL); | |
1250 | if ((data->fan_main_ctrl & 0x70) == 0) { | |
1251 | /* Enable all fan tachometers */ | |
1252 | data->fan_main_ctrl |= 0x70; | |
1253 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
1254 | } | |
9060f8bd | 1255 | data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; |
1da177e4 | 1256 | |
17d648bf | 1257 | /* Set tachometers to 16-bit mode if needed */ |
87673dd7 | 1258 | if (data->type == it8716 || data->type == it8718) { |
17d648bf | 1259 | tmp = it87_read_value(client, IT87_REG_FAN_16BIT); |
9060f8bd | 1260 | if (~tmp & 0x07 & data->has_fan) { |
17d648bf JD |
1261 | dev_dbg(&client->dev, |
1262 | "Setting fan1-3 to 16-bit mode\n"); | |
1263 | it87_write_value(client, IT87_REG_FAN_16BIT, | |
1264 | tmp | 0x07); | |
1265 | } | |
1266 | } | |
1267 | ||
1da177e4 LT |
1268 | /* Set current fan mode registers and the default settings for the |
1269 | * other mode registers */ | |
1270 | for (i = 0; i < 3; i++) { | |
1271 | if (data->fan_main_ctrl & (1 << i)) { | |
1272 | /* pwm mode */ | |
1273 | tmp = it87_read_value(client, IT87_REG_PWM(i)); | |
1274 | if (tmp & 0x80) { | |
1275 | /* automatic pwm - not yet implemented, but | |
1276 | * leave the settings made by the BIOS alone | |
1277 | * until a change is requested via the sysfs | |
1278 | * interface */ | |
1279 | } else { | |
1280 | /* manual pwm */ | |
1281 | data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp); | |
1282 | } | |
1283 | } | |
1284 | } | |
1285 | ||
1286 | /* Start monitoring */ | |
1287 | it87_write_value(client, IT87_REG_CONFIG, | |
1288 | (it87_read_value(client, IT87_REG_CONFIG) & 0x36) | |
1289 | | (update_vbat ? 0x41 : 0x01)); | |
1290 | } | |
1291 | ||
1292 | static struct it87_data *it87_update_device(struct device *dev) | |
1293 | { | |
1294 | struct i2c_client *client = to_i2c_client(dev); | |
1295 | struct it87_data *data = i2c_get_clientdata(client); | |
1296 | int i; | |
1297 | ||
9a61bf63 | 1298 | mutex_lock(&data->update_lock); |
1da177e4 LT |
1299 | |
1300 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
1301 | || !data->valid) { | |
1302 | ||
1303 | if (update_vbat) { | |
1304 | /* Cleared after each update, so reenable. Value | |
1305 | returned by this read will be previous value */ | |
1306 | it87_write_value(client, IT87_REG_CONFIG, | |
1307 | it87_read_value(client, IT87_REG_CONFIG) | 0x40); | |
1308 | } | |
1309 | for (i = 0; i <= 7; i++) { | |
1310 | data->in[i] = | |
1311 | it87_read_value(client, IT87_REG_VIN(i)); | |
1312 | data->in_min[i] = | |
1313 | it87_read_value(client, IT87_REG_VIN_MIN(i)); | |
1314 | data->in_max[i] = | |
1315 | it87_read_value(client, IT87_REG_VIN_MAX(i)); | |
1316 | } | |
3543a53f | 1317 | /* in8 (battery) has no limit registers */ |
1da177e4 LT |
1318 | data->in[8] = |
1319 | it87_read_value(client, IT87_REG_VIN(8)); | |
1da177e4 LT |
1320 | |
1321 | for (i = 0; i < 3; i++) { | |
9060f8bd JD |
1322 | /* Skip disabled fans */ |
1323 | if (!(data->has_fan & (1 << i))) | |
1324 | continue; | |
1325 | ||
1da177e4 LT |
1326 | data->fan_min[i] = |
1327 | it87_read_value(client, IT87_REG_FAN_MIN(i)); | |
17d648bf JD |
1328 | data->fan[i] = it87_read_value(client, |
1329 | IT87_REG_FAN(i)); | |
1330 | /* Add high byte if in 16-bit mode */ | |
87673dd7 | 1331 | if (data->type == it8716 || data->type == it8718) { |
17d648bf JD |
1332 | data->fan[i] |= it87_read_value(client, |
1333 | IT87_REG_FANX(i)) << 8; | |
1334 | data->fan_min[i] |= it87_read_value(client, | |
1335 | IT87_REG_FANX_MIN(i)) << 8; | |
1336 | } | |
1da177e4 LT |
1337 | } |
1338 | for (i = 0; i < 3; i++) { | |
1339 | data->temp[i] = | |
1340 | it87_read_value(client, IT87_REG_TEMP(i)); | |
1341 | data->temp_high[i] = | |
1342 | it87_read_value(client, IT87_REG_TEMP_HIGH(i)); | |
1343 | data->temp_low[i] = | |
1344 | it87_read_value(client, IT87_REG_TEMP_LOW(i)); | |
1345 | } | |
1346 | ||
17d648bf | 1347 | /* Newer chips don't have clock dividers */ |
87673dd7 JD |
1348 | if ((data->has_fan & 0x07) && data->type != it8716 |
1349 | && data->type != it8718) { | |
17d648bf JD |
1350 | i = it87_read_value(client, IT87_REG_FAN_DIV); |
1351 | data->fan_div[0] = i & 0x07; | |
1352 | data->fan_div[1] = (i >> 3) & 0x07; | |
1353 | data->fan_div[2] = (i & 0x40) ? 3 : 1; | |
1354 | } | |
1da177e4 LT |
1355 | |
1356 | data->alarms = | |
1357 | it87_read_value(client, IT87_REG_ALARM1) | | |
1358 | (it87_read_value(client, IT87_REG_ALARM2) << 8) | | |
1359 | (it87_read_value(client, IT87_REG_ALARM3) << 16); | |
1360 | data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL); | |
f8d0c19a | 1361 | data->fan_ctl = it87_read_value(client, IT87_REG_FAN_CTL); |
1da177e4 LT |
1362 | |
1363 | data->sensor = it87_read_value(client, IT87_REG_TEMP_ENABLE); | |
1364 | /* The 8705 does not have VID capability */ | |
17d648bf | 1365 | if (data->type == it8712 || data->type == it8716) { |
1da177e4 | 1366 | data->vid = it87_read_value(client, IT87_REG_VID); |
17d648bf JD |
1367 | /* The older IT8712F revisions had only 5 VID pins, |
1368 | but we assume it is always safe to read 6 bits. */ | |
1369 | data->vid &= 0x3f; | |
1da177e4 LT |
1370 | } |
1371 | data->last_updated = jiffies; | |
1372 | data->valid = 1; | |
1373 | } | |
1374 | ||
9a61bf63 | 1375 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1376 | |
1377 | return data; | |
1378 | } | |
1379 | ||
1380 | static int __init sm_it87_init(void) | |
1381 | { | |
91749996 | 1382 | int res; |
fde09509 | 1383 | |
8e9afcbb | 1384 | if ((res = it87_find(&isa_address))) |
fde09509 | 1385 | return res; |
8e9afcbb | 1386 | return i2c_isa_add_driver(&it87_isa_driver); |
1da177e4 LT |
1387 | } |
1388 | ||
1389 | static void __exit sm_it87_exit(void) | |
1390 | { | |
8e9afcbb | 1391 | i2c_isa_del_driver(&it87_isa_driver); |
1da177e4 LT |
1392 | } |
1393 | ||
1394 | ||
b19367c6 JD |
1395 | MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>, " |
1396 | "Jean Delvare <khali@linux-fr.org>"); | |
08a8f6e9 | 1397 | MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8726F, SiS950 driver"); |
1da177e4 LT |
1398 | module_param(update_vbat, bool, 0); |
1399 | MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); | |
1400 | module_param(fix_pwm_polarity, bool, 0); | |
1401 | MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)"); | |
1402 | MODULE_LICENSE("GPL"); | |
1403 | ||
1404 | module_init(sm_it87_init); | |
1405 | module_exit(sm_it87_exit); |