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 |
87673dd7 | 8 | IT8718F Super I/O chip w/LPC interface |
1da177e4 LT |
9 | Sis950 A clone of the IT8705F |
10 | ||
11 | Copyright (C) 2001 Chris Gauthron <chrisg@0-in.com> | |
b19367c6 | 12 | Copyright (C) 2005-2006 Jean Delvare <khali@linux-fr.org> |
1da177e4 LT |
13 | |
14 | This program is free software; you can redistribute it and/or modify | |
15 | it under the terms of the GNU General Public License as published by | |
16 | the Free Software Foundation; either version 2 of the License, or | |
17 | (at your option) any later version. | |
18 | ||
19 | This program is distributed in the hope that it will be useful, | |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
23 | ||
24 | You should have received a copy of the GNU General Public License | |
25 | along with this program; if not, write to the Free Software | |
26 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | */ | |
28 | ||
1da177e4 LT |
29 | #include <linux/module.h> |
30 | #include <linux/init.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/jiffies.h> | |
33 | #include <linux/i2c.h> | |
fde09509 | 34 | #include <linux/i2c-isa.h> |
943b0830 | 35 | #include <linux/hwmon.h> |
303760b4 JD |
36 | #include <linux/hwmon-sysfs.h> |
37 | #include <linux/hwmon-vid.h> | |
943b0830 | 38 | #include <linux/err.h> |
9a61bf63 | 39 | #include <linux/mutex.h> |
87808be4 | 40 | #include <linux/sysfs.h> |
1da177e4 LT |
41 | #include <asm/io.h> |
42 | ||
43 | ||
44 | /* Addresses to scan */ | |
c5e3fbf2 | 45 | static unsigned short normal_i2c[] = { 0x2d, I2C_CLIENT_END }; |
91749996 | 46 | static unsigned short isa_address; |
1da177e4 LT |
47 | |
48 | /* Insmod parameters */ | |
87673dd7 | 49 | I2C_CLIENT_INSMOD_4(it87, it8712, it8716, it8718); |
1da177e4 LT |
50 | |
51 | #define REG 0x2e /* The register to read/write */ | |
52 | #define DEV 0x07 /* Register: Logical device select */ | |
53 | #define VAL 0x2f /* The value to read/write */ | |
54 | #define PME 0x04 /* The device with the fan registers in it */ | |
87673dd7 | 55 | #define GPIO 0x07 /* The device with the IT8718F VID value in it */ |
1da177e4 LT |
56 | #define DEVID 0x20 /* Register: Device ID */ |
57 | #define DEVREV 0x22 /* Register: Device Revision */ | |
58 | ||
59 | static inline int | |
60 | superio_inb(int reg) | |
61 | { | |
62 | outb(reg, REG); | |
63 | return inb(VAL); | |
64 | } | |
65 | ||
66 | static int superio_inw(int reg) | |
67 | { | |
68 | int val; | |
69 | outb(reg++, REG); | |
70 | val = inb(VAL) << 8; | |
71 | outb(reg, REG); | |
72 | val |= inb(VAL); | |
73 | return val; | |
74 | } | |
75 | ||
76 | static inline void | |
87673dd7 | 77 | superio_select(int ldn) |
1da177e4 LT |
78 | { |
79 | outb(DEV, REG); | |
87673dd7 | 80 | outb(ldn, VAL); |
1da177e4 LT |
81 | } |
82 | ||
83 | static inline void | |
84 | superio_enter(void) | |
85 | { | |
86 | outb(0x87, REG); | |
87 | outb(0x01, REG); | |
88 | outb(0x55, REG); | |
89 | outb(0x55, REG); | |
90 | } | |
91 | ||
92 | static inline void | |
93 | superio_exit(void) | |
94 | { | |
95 | outb(0x02, REG); | |
96 | outb(0x02, VAL); | |
97 | } | |
98 | ||
87673dd7 | 99 | /* Logical device 4 registers */ |
1da177e4 LT |
100 | #define IT8712F_DEVID 0x8712 |
101 | #define IT8705F_DEVID 0x8705 | |
17d648bf | 102 | #define IT8716F_DEVID 0x8716 |
87673dd7 | 103 | #define IT8718F_DEVID 0x8718 |
1da177e4 LT |
104 | #define IT87_ACT_REG 0x30 |
105 | #define IT87_BASE_REG 0x60 | |
106 | ||
87673dd7 JD |
107 | /* Logical device 7 registers (IT8712F and later) */ |
108 | #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ | |
109 | #define IT87_SIO_VID_REG 0xfc /* VID value */ | |
110 | ||
1da177e4 LT |
111 | /* Update battery voltage after every reading if true */ |
112 | static int update_vbat; | |
113 | ||
114 | /* Not all BIOSes properly configure the PWM registers */ | |
115 | static int fix_pwm_polarity; | |
116 | ||
87673dd7 | 117 | /* Values read from Super-I/O config space */ |
1da177e4 | 118 | static u16 chip_type; |
87673dd7 | 119 | static u8 vid_value; |
1da177e4 LT |
120 | |
121 | /* Many IT87 constants specified below */ | |
122 | ||
123 | /* Length of ISA address segment */ | |
124 | #define IT87_EXTENT 8 | |
125 | ||
126 | /* Where are the ISA address/data registers relative to the base address */ | |
127 | #define IT87_ADDR_REG_OFFSET 5 | |
128 | #define IT87_DATA_REG_OFFSET 6 | |
129 | ||
130 | /*----- The IT87 registers -----*/ | |
131 | ||
132 | #define IT87_REG_CONFIG 0x00 | |
133 | ||
134 | #define IT87_REG_ALARM1 0x01 | |
135 | #define IT87_REG_ALARM2 0x02 | |
136 | #define IT87_REG_ALARM3 0x03 | |
137 | ||
87673dd7 JD |
138 | /* The IT8718F has the VID value in a different register, in Super-I/O |
139 | configuration space. */ | |
1da177e4 | 140 | #define IT87_REG_VID 0x0a |
17d648bf JD |
141 | /* Warning: register 0x0b is used for something completely different in |
142 | new chips/revisions. I suspect only 16-bit tachometer mode will work | |
143 | for these. */ | |
1da177e4 | 144 | #define IT87_REG_FAN_DIV 0x0b |
17d648bf | 145 | #define IT87_REG_FAN_16BIT 0x0c |
1da177e4 LT |
146 | |
147 | /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ | |
148 | ||
149 | #define IT87_REG_FAN(nr) (0x0d + (nr)) | |
150 | #define IT87_REG_FAN_MIN(nr) (0x10 + (nr)) | |
17d648bf JD |
151 | #define IT87_REG_FANX(nr) (0x18 + (nr)) |
152 | #define IT87_REG_FANX_MIN(nr) (0x1b + (nr)) | |
1da177e4 LT |
153 | #define IT87_REG_FAN_MAIN_CTRL 0x13 |
154 | #define IT87_REG_FAN_CTL 0x14 | |
155 | #define IT87_REG_PWM(nr) (0x15 + (nr)) | |
156 | ||
157 | #define IT87_REG_VIN(nr) (0x20 + (nr)) | |
158 | #define IT87_REG_TEMP(nr) (0x29 + (nr)) | |
159 | ||
160 | #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) | |
161 | #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) | |
162 | #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) | |
163 | #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) | |
164 | ||
165 | #define IT87_REG_I2C_ADDR 0x48 | |
166 | ||
167 | #define IT87_REG_VIN_ENABLE 0x50 | |
168 | #define IT87_REG_TEMP_ENABLE 0x51 | |
169 | ||
170 | #define IT87_REG_CHIPID 0x58 | |
171 | ||
172 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255)) | |
173 | #define IN_FROM_REG(val) ((val) * 16) | |
174 | ||
175 | static inline u8 FAN_TO_REG(long rpm, int div) | |
176 | { | |
177 | if (rpm == 0) | |
178 | return 255; | |
179 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
180 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, | |
181 | 254); | |
182 | } | |
183 | ||
17d648bf JD |
184 | static inline u16 FAN16_TO_REG(long rpm) |
185 | { | |
186 | if (rpm == 0) | |
187 | return 0xffff; | |
188 | return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); | |
189 | } | |
190 | ||
1da177e4 | 191 | #define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div))) |
17d648bf JD |
192 | /* The divider is fixed to 2 in 16-bit mode */ |
193 | #define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2)) | |
1da177e4 LT |
194 | |
195 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\ | |
196 | ((val)+500)/1000),-128,127)) | |
197 | #define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000) | |
198 | ||
1da177e4 LT |
199 | #define PWM_TO_REG(val) ((val) >> 1) |
200 | #define PWM_FROM_REG(val) (((val)&0x7f) << 1) | |
201 | ||
202 | static int DIV_TO_REG(int val) | |
203 | { | |
204 | int answer = 0; | |
b9e349f7 | 205 | while (answer < 7 && (val >>= 1)) |
1da177e4 LT |
206 | answer++; |
207 | return answer; | |
208 | } | |
209 | #define DIV_FROM_REG(val) (1 << (val)) | |
210 | ||
211 | ||
212 | /* For each registered IT87, we need to keep some data in memory. That | |
213 | data is pointed to by it87_list[NR]->data. The structure itself is | |
214 | dynamically allocated, at the same time when a new it87 client is | |
215 | allocated. */ | |
216 | struct it87_data { | |
217 | struct i2c_client client; | |
943b0830 | 218 | struct class_device *class_dev; |
9a61bf63 | 219 | struct mutex lock; |
1da177e4 LT |
220 | enum chips type; |
221 | ||
9a61bf63 | 222 | struct mutex update_lock; |
1da177e4 LT |
223 | char valid; /* !=0 if following fields are valid */ |
224 | unsigned long last_updated; /* In jiffies */ | |
225 | ||
226 | u8 in[9]; /* Register value */ | |
3543a53f JD |
227 | u8 in_max[8]; /* Register value */ |
228 | u8 in_min[8]; /* Register value */ | |
9060f8bd | 229 | u8 has_fan; /* Bitfield, fans enabled */ |
17d648bf JD |
230 | u16 fan[3]; /* Register values, possibly combined */ |
231 | u16 fan_min[3]; /* Register values, possibly combined */ | |
1da177e4 LT |
232 | u8 temp[3]; /* Register value */ |
233 | u8 temp_high[3]; /* Register value */ | |
234 | u8 temp_low[3]; /* Register value */ | |
235 | u8 sensor; /* Register value */ | |
236 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
237 | u8 vid; /* Register encoding, combined */ | |
a7be58a1 | 238 | u8 vrm; |
1da177e4 LT |
239 | u32 alarms; /* Register encoding, combined */ |
240 | u8 fan_main_ctrl; /* Register value */ | |
241 | u8 manual_pwm_ctl[3]; /* manual PWM value set by user */ | |
242 | }; | |
243 | ||
244 | ||
245 | static int it87_attach_adapter(struct i2c_adapter *adapter); | |
2d8672c5 | 246 | static int it87_isa_attach_adapter(struct i2c_adapter *adapter); |
1da177e4 LT |
247 | static int it87_detect(struct i2c_adapter *adapter, int address, int kind); |
248 | static int it87_detach_client(struct i2c_client *client); | |
249 | ||
f6c27fc1 DJ |
250 | static int it87_read_value(struct i2c_client *client, u8 reg); |
251 | static int it87_write_value(struct i2c_client *client, u8 reg, u8 value); | |
1da177e4 LT |
252 | static struct it87_data *it87_update_device(struct device *dev); |
253 | static int it87_check_pwm(struct i2c_client *client); | |
254 | static void it87_init_client(struct i2c_client *client, struct it87_data *data); | |
255 | ||
256 | ||
257 | static struct i2c_driver it87_driver = { | |
cdaf7934 | 258 | .driver = { |
cdaf7934 LR |
259 | .name = "it87", |
260 | }, | |
1da177e4 | 261 | .id = I2C_DRIVERID_IT87, |
1da177e4 LT |
262 | .attach_adapter = it87_attach_adapter, |
263 | .detach_client = it87_detach_client, | |
264 | }; | |
265 | ||
fde09509 | 266 | static struct i2c_driver it87_isa_driver = { |
cdaf7934 | 267 | .driver = { |
87218842 | 268 | .owner = THIS_MODULE, |
cdaf7934 LR |
269 | .name = "it87-isa", |
270 | }, | |
2d8672c5 | 271 | .attach_adapter = it87_isa_attach_adapter, |
fde09509 JD |
272 | .detach_client = it87_detach_client, |
273 | }; | |
274 | ||
275 | ||
20ad93d4 JD |
276 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
277 | char *buf) | |
1da177e4 | 278 | { |
20ad93d4 JD |
279 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
280 | int nr = sensor_attr->index; | |
281 | ||
1da177e4 LT |
282 | struct it87_data *data = it87_update_device(dev); |
283 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); | |
284 | } | |
285 | ||
20ad93d4 JD |
286 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, |
287 | char *buf) | |
1da177e4 | 288 | { |
20ad93d4 JD |
289 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
290 | int nr = sensor_attr->index; | |
291 | ||
1da177e4 LT |
292 | struct it87_data *data = it87_update_device(dev); |
293 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); | |
294 | } | |
295 | ||
20ad93d4 JD |
296 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, |
297 | char *buf) | |
1da177e4 | 298 | { |
20ad93d4 JD |
299 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
300 | int nr = sensor_attr->index; | |
301 | ||
1da177e4 LT |
302 | struct it87_data *data = it87_update_device(dev); |
303 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); | |
304 | } | |
305 | ||
20ad93d4 JD |
306 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
307 | const char *buf, size_t count) | |
1da177e4 | 308 | { |
20ad93d4 JD |
309 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
310 | int nr = sensor_attr->index; | |
311 | ||
1da177e4 LT |
312 | struct i2c_client *client = to_i2c_client(dev); |
313 | struct it87_data *data = i2c_get_clientdata(client); | |
314 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
315 | ||
9a61bf63 | 316 | mutex_lock(&data->update_lock); |
1da177e4 LT |
317 | data->in_min[nr] = IN_TO_REG(val); |
318 | it87_write_value(client, IT87_REG_VIN_MIN(nr), | |
319 | data->in_min[nr]); | |
9a61bf63 | 320 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
321 | return count; |
322 | } | |
20ad93d4 JD |
323 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
324 | const char *buf, size_t count) | |
1da177e4 | 325 | { |
20ad93d4 JD |
326 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
327 | int nr = sensor_attr->index; | |
328 | ||
1da177e4 LT |
329 | struct i2c_client *client = to_i2c_client(dev); |
330 | struct it87_data *data = i2c_get_clientdata(client); | |
331 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
332 | ||
9a61bf63 | 333 | mutex_lock(&data->update_lock); |
1da177e4 LT |
334 | data->in_max[nr] = IN_TO_REG(val); |
335 | it87_write_value(client, IT87_REG_VIN_MAX(nr), | |
336 | data->in_max[nr]); | |
9a61bf63 | 337 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
338 | return count; |
339 | } | |
340 | ||
341 | #define show_in_offset(offset) \ | |
20ad93d4 JD |
342 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
343 | show_in, NULL, offset); | |
1da177e4 LT |
344 | |
345 | #define limit_in_offset(offset) \ | |
20ad93d4 JD |
346 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
347 | show_in_min, set_in_min, offset); \ | |
348 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
349 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
350 | |
351 | show_in_offset(0); | |
352 | limit_in_offset(0); | |
353 | show_in_offset(1); | |
354 | limit_in_offset(1); | |
355 | show_in_offset(2); | |
356 | limit_in_offset(2); | |
357 | show_in_offset(3); | |
358 | limit_in_offset(3); | |
359 | show_in_offset(4); | |
360 | limit_in_offset(4); | |
361 | show_in_offset(5); | |
362 | limit_in_offset(5); | |
363 | show_in_offset(6); | |
364 | limit_in_offset(6); | |
365 | show_in_offset(7); | |
366 | limit_in_offset(7); | |
367 | show_in_offset(8); | |
368 | ||
369 | /* 3 temperatures */ | |
20ad93d4 JD |
370 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
371 | char *buf) | |
1da177e4 | 372 | { |
20ad93d4 JD |
373 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
374 | int nr = sensor_attr->index; | |
375 | ||
1da177e4 LT |
376 | struct it87_data *data = it87_update_device(dev); |
377 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
378 | } | |
20ad93d4 JD |
379 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, |
380 | char *buf) | |
1da177e4 | 381 | { |
20ad93d4 JD |
382 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
383 | int nr = sensor_attr->index; | |
384 | ||
1da177e4 LT |
385 | struct it87_data *data = it87_update_device(dev); |
386 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); | |
387 | } | |
20ad93d4 JD |
388 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
389 | char *buf) | |
1da177e4 | 390 | { |
20ad93d4 JD |
391 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
392 | int nr = sensor_attr->index; | |
393 | ||
1da177e4 LT |
394 | struct it87_data *data = it87_update_device(dev); |
395 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); | |
396 | } | |
20ad93d4 JD |
397 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
398 | const char *buf, size_t count) | |
1da177e4 | 399 | { |
20ad93d4 JD |
400 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
401 | int nr = sensor_attr->index; | |
402 | ||
1da177e4 LT |
403 | struct i2c_client *client = to_i2c_client(dev); |
404 | struct it87_data *data = i2c_get_clientdata(client); | |
405 | int val = simple_strtol(buf, NULL, 10); | |
406 | ||
9a61bf63 | 407 | mutex_lock(&data->update_lock); |
1da177e4 LT |
408 | data->temp_high[nr] = TEMP_TO_REG(val); |
409 | it87_write_value(client, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); | |
9a61bf63 | 410 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
411 | return count; |
412 | } | |
20ad93d4 JD |
413 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
414 | const char *buf, size_t count) | |
1da177e4 | 415 | { |
20ad93d4 JD |
416 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
417 | int nr = sensor_attr->index; | |
418 | ||
1da177e4 LT |
419 | struct i2c_client *client = to_i2c_client(dev); |
420 | struct it87_data *data = i2c_get_clientdata(client); | |
421 | int val = simple_strtol(buf, NULL, 10); | |
422 | ||
9a61bf63 | 423 | mutex_lock(&data->update_lock); |
1da177e4 LT |
424 | data->temp_low[nr] = TEMP_TO_REG(val); |
425 | it87_write_value(client, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); | |
9a61bf63 | 426 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
427 | return count; |
428 | } | |
429 | #define show_temp_offset(offset) \ | |
20ad93d4 JD |
430 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
431 | show_temp, NULL, offset - 1); \ | |
432 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
433 | show_temp_max, set_temp_max, offset - 1); \ | |
434 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
435 | show_temp_min, set_temp_min, offset - 1); | |
1da177e4 LT |
436 | |
437 | show_temp_offset(1); | |
438 | show_temp_offset(2); | |
439 | show_temp_offset(3); | |
440 | ||
20ad93d4 JD |
441 | static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, |
442 | char *buf) | |
1da177e4 | 443 | { |
20ad93d4 JD |
444 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
445 | int nr = sensor_attr->index; | |
446 | ||
1da177e4 LT |
447 | struct it87_data *data = it87_update_device(dev); |
448 | u8 reg = data->sensor; /* In case the value is updated while we use it */ | |
449 | ||
450 | if (reg & (1 << nr)) | |
451 | return sprintf(buf, "3\n"); /* thermal diode */ | |
452 | if (reg & (8 << nr)) | |
453 | return sprintf(buf, "2\n"); /* thermistor */ | |
454 | return sprintf(buf, "0\n"); /* disabled */ | |
455 | } | |
20ad93d4 JD |
456 | static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, |
457 | const char *buf, size_t count) | |
1da177e4 | 458 | { |
20ad93d4 JD |
459 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
460 | int nr = sensor_attr->index; | |
461 | ||
1da177e4 LT |
462 | struct i2c_client *client = to_i2c_client(dev); |
463 | struct it87_data *data = i2c_get_clientdata(client); | |
464 | int val = simple_strtol(buf, NULL, 10); | |
465 | ||
9a61bf63 | 466 | mutex_lock(&data->update_lock); |
1da177e4 LT |
467 | |
468 | data->sensor &= ~(1 << nr); | |
469 | data->sensor &= ~(8 << nr); | |
470 | /* 3 = thermal diode; 2 = thermistor; 0 = disabled */ | |
471 | if (val == 3) | |
472 | data->sensor |= 1 << nr; | |
473 | else if (val == 2) | |
474 | data->sensor |= 8 << nr; | |
475 | else if (val != 0) { | |
9a61bf63 | 476 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
477 | return -EINVAL; |
478 | } | |
479 | it87_write_value(client, IT87_REG_TEMP_ENABLE, data->sensor); | |
9a61bf63 | 480 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
481 | return count; |
482 | } | |
483 | #define show_sensor_offset(offset) \ | |
20ad93d4 JD |
484 | static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ |
485 | show_sensor, set_sensor, offset - 1); | |
1da177e4 LT |
486 | |
487 | show_sensor_offset(1); | |
488 | show_sensor_offset(2); | |
489 | show_sensor_offset(3); | |
490 | ||
491 | /* 3 Fans */ | |
20ad93d4 JD |
492 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
493 | char *buf) | |
1da177e4 | 494 | { |
20ad93d4 JD |
495 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
496 | int nr = sensor_attr->index; | |
497 | ||
1da177e4 LT |
498 | struct it87_data *data = it87_update_device(dev); |
499 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr], | |
500 | DIV_FROM_REG(data->fan_div[nr]))); | |
501 | } | |
20ad93d4 JD |
502 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
503 | char *buf) | |
1da177e4 | 504 | { |
20ad93d4 JD |
505 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
506 | int nr = sensor_attr->index; | |
507 | ||
1da177e4 LT |
508 | struct it87_data *data = it87_update_device(dev); |
509 | return sprintf(buf,"%d\n", | |
510 | FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); | |
511 | } | |
20ad93d4 JD |
512 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
513 | char *buf) | |
1da177e4 | 514 | { |
20ad93d4 JD |
515 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
516 | int nr = sensor_attr->index; | |
517 | ||
1da177e4 LT |
518 | struct it87_data *data = it87_update_device(dev); |
519 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
520 | } | |
20ad93d4 JD |
521 | static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, |
522 | char *buf) | |
1da177e4 | 523 | { |
20ad93d4 JD |
524 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
525 | int nr = sensor_attr->index; | |
526 | ||
1da177e4 LT |
527 | struct it87_data *data = it87_update_device(dev); |
528 | return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0); | |
529 | } | |
20ad93d4 JD |
530 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
531 | char *buf) | |
1da177e4 | 532 | { |
20ad93d4 JD |
533 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
534 | int nr = sensor_attr->index; | |
535 | ||
1da177e4 LT |
536 | struct it87_data *data = it87_update_device(dev); |
537 | return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]); | |
538 | } | |
20ad93d4 JD |
539 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
540 | const char *buf, size_t count) | |
1da177e4 | 541 | { |
20ad93d4 JD |
542 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
543 | int nr = sensor_attr->index; | |
544 | ||
1da177e4 LT |
545 | struct i2c_client *client = to_i2c_client(dev); |
546 | struct it87_data *data = i2c_get_clientdata(client); | |
547 | int val = simple_strtol(buf, NULL, 10); | |
07eab46d | 548 | u8 reg = it87_read_value(client, IT87_REG_FAN_DIV); |
1da177e4 | 549 | |
9a61bf63 | 550 | mutex_lock(&data->update_lock); |
07eab46d JD |
551 | switch (nr) { |
552 | case 0: data->fan_div[nr] = reg & 0x07; break; | |
553 | case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break; | |
554 | case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break; | |
555 | } | |
556 | ||
1da177e4 LT |
557 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
558 | it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 559 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
560 | return count; |
561 | } | |
20ad93d4 JD |
562 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
563 | const char *buf, size_t count) | |
1da177e4 | 564 | { |
20ad93d4 JD |
565 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
566 | int nr = sensor_attr->index; | |
567 | ||
1da177e4 LT |
568 | struct i2c_client *client = to_i2c_client(dev); |
569 | struct it87_data *data = i2c_get_clientdata(client); | |
b9e349f7 | 570 | unsigned long val = simple_strtoul(buf, NULL, 10); |
8ab4ec3e | 571 | int min; |
1da177e4 LT |
572 | u8 old; |
573 | ||
9a61bf63 | 574 | mutex_lock(&data->update_lock); |
1da177e4 LT |
575 | old = it87_read_value(client, IT87_REG_FAN_DIV); |
576 | ||
8ab4ec3e JD |
577 | /* Save fan min limit */ |
578 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); | |
1da177e4 LT |
579 | |
580 | switch (nr) { | |
581 | case 0: | |
582 | case 1: | |
583 | data->fan_div[nr] = DIV_TO_REG(val); | |
584 | break; | |
585 | case 2: | |
586 | if (val < 8) | |
587 | data->fan_div[nr] = 1; | |
588 | else | |
589 | data->fan_div[nr] = 3; | |
590 | } | |
591 | val = old & 0x80; | |
592 | val |= (data->fan_div[0] & 0x07); | |
593 | val |= (data->fan_div[1] & 0x07) << 3; | |
594 | if (data->fan_div[2] == 3) | |
595 | val |= 0x1 << 6; | |
596 | it87_write_value(client, IT87_REG_FAN_DIV, val); | |
597 | ||
8ab4ec3e JD |
598 | /* Restore fan min limit */ |
599 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
600 | it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); | |
601 | ||
9a61bf63 | 602 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
603 | return count; |
604 | } | |
20ad93d4 JD |
605 | static ssize_t set_pwm_enable(struct device *dev, |
606 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 607 | { |
20ad93d4 JD |
608 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
609 | int nr = sensor_attr->index; | |
610 | ||
1da177e4 LT |
611 | struct i2c_client *client = to_i2c_client(dev); |
612 | struct it87_data *data = i2c_get_clientdata(client); | |
613 | int val = simple_strtol(buf, NULL, 10); | |
614 | ||
9a61bf63 | 615 | mutex_lock(&data->update_lock); |
1da177e4 LT |
616 | |
617 | if (val == 0) { | |
618 | int tmp; | |
619 | /* make sure the fan is on when in on/off mode */ | |
620 | tmp = it87_read_value(client, IT87_REG_FAN_CTL); | |
621 | it87_write_value(client, IT87_REG_FAN_CTL, tmp | (1 << nr)); | |
622 | /* set on/off mode */ | |
623 | data->fan_main_ctrl &= ~(1 << nr); | |
624 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
625 | } else if (val == 1) { | |
626 | /* set SmartGuardian mode */ | |
627 | data->fan_main_ctrl |= (1 << nr); | |
628 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
629 | /* set saved pwm value, clear FAN_CTLX PWM mode bit */ | |
630 | it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); | |
631 | } else { | |
9a61bf63 | 632 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
633 | return -EINVAL; |
634 | } | |
635 | ||
9a61bf63 | 636 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
637 | return count; |
638 | } | |
20ad93d4 JD |
639 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
640 | const char *buf, size_t count) | |
1da177e4 | 641 | { |
20ad93d4 JD |
642 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
643 | int nr = sensor_attr->index; | |
644 | ||
1da177e4 LT |
645 | struct i2c_client *client = to_i2c_client(dev); |
646 | struct it87_data *data = i2c_get_clientdata(client); | |
647 | int val = simple_strtol(buf, NULL, 10); | |
648 | ||
649 | if (val < 0 || val > 255) | |
650 | return -EINVAL; | |
651 | ||
9a61bf63 | 652 | mutex_lock(&data->update_lock); |
1da177e4 LT |
653 | data->manual_pwm_ctl[nr] = val; |
654 | if (data->fan_main_ctrl & (1 << nr)) | |
655 | it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); | |
9a61bf63 | 656 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
657 | return count; |
658 | } | |
659 | ||
20ad93d4 JD |
660 | #define show_fan_offset(offset) \ |
661 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
662 | show_fan, NULL, offset - 1); \ | |
663 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
664 | show_fan_min, set_fan_min, offset - 1); \ | |
665 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
666 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
667 | |
668 | show_fan_offset(1); | |
669 | show_fan_offset(2); | |
670 | show_fan_offset(3); | |
671 | ||
672 | #define show_pwm_offset(offset) \ | |
20ad93d4 JD |
673 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
674 | show_pwm_enable, set_pwm_enable, offset - 1); \ | |
675 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ | |
676 | show_pwm, set_pwm, offset - 1); | |
1da177e4 LT |
677 | |
678 | show_pwm_offset(1); | |
679 | show_pwm_offset(2); | |
680 | show_pwm_offset(3); | |
681 | ||
17d648bf JD |
682 | /* A different set of callbacks for 16-bit fans */ |
683 | static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, | |
684 | char *buf) | |
685 | { | |
686 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
687 | int nr = sensor_attr->index; | |
688 | struct it87_data *data = it87_update_device(dev); | |
689 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); | |
690 | } | |
691 | ||
692 | static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, | |
693 | char *buf) | |
694 | { | |
695 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
696 | int nr = sensor_attr->index; | |
697 | struct it87_data *data = it87_update_device(dev); | |
698 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); | |
699 | } | |
700 | ||
701 | static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, | |
702 | const char *buf, size_t count) | |
703 | { | |
704 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
705 | int nr = sensor_attr->index; | |
706 | struct i2c_client *client = to_i2c_client(dev); | |
707 | struct it87_data *data = i2c_get_clientdata(client); | |
708 | int val = simple_strtol(buf, NULL, 10); | |
709 | ||
710 | mutex_lock(&data->update_lock); | |
711 | data->fan_min[nr] = FAN16_TO_REG(val); | |
712 | it87_write_value(client, IT87_REG_FAN_MIN(nr), | |
713 | data->fan_min[nr] & 0xff); | |
714 | it87_write_value(client, IT87_REG_FANX_MIN(nr), | |
715 | data->fan_min[nr] >> 8); | |
716 | mutex_unlock(&data->update_lock); | |
717 | return count; | |
718 | } | |
719 | ||
720 | /* We want to use the same sysfs file names as 8-bit fans, but we need | |
721 | different variable names, so we have to use SENSOR_ATTR instead of | |
722 | SENSOR_DEVICE_ATTR. */ | |
723 | #define show_fan16_offset(offset) \ | |
724 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ | |
725 | = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ | |
726 | show_fan16, NULL, offset - 1); \ | |
727 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ | |
728 | = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
729 | show_fan16_min, set_fan16_min, offset - 1) | |
730 | ||
731 | show_fan16_offset(1); | |
732 | show_fan16_offset(2); | |
733 | show_fan16_offset(3); | |
734 | ||
1da177e4 | 735 | /* Alarms */ |
30f74292 | 736 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
737 | { |
738 | struct it87_data *data = it87_update_device(dev); | |
68188ba7 | 739 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 | 740 | } |
1d66c64c | 741 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4 LT |
742 | |
743 | static ssize_t | |
30f74292 | 744 | show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
745 | { |
746 | struct it87_data *data = it87_update_device(dev); | |
a7be58a1 | 747 | return sprintf(buf, "%u\n", data->vrm); |
1da177e4 LT |
748 | } |
749 | static ssize_t | |
30f74292 | 750 | store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
751 | { |
752 | struct i2c_client *client = to_i2c_client(dev); | |
753 | struct it87_data *data = i2c_get_clientdata(client); | |
754 | u32 val; | |
755 | ||
756 | val = simple_strtoul(buf, NULL, 10); | |
757 | data->vrm = val; | |
758 | ||
759 | return count; | |
760 | } | |
761 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
1da177e4 LT |
762 | |
763 | static ssize_t | |
30f74292 | 764 | show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
765 | { |
766 | struct it87_data *data = it87_update_device(dev); | |
767 | return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); | |
768 | } | |
769 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
87808be4 JD |
770 | |
771 | static struct attribute *it87_attributes[] = { | |
772 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
773 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
774 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
775 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
776 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
777 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
778 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
779 | &sensor_dev_attr_in7_input.dev_attr.attr, | |
780 | &sensor_dev_attr_in8_input.dev_attr.attr, | |
781 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
782 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
783 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
784 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
785 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
786 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
787 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
788 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
789 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
790 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
791 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
792 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
793 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
794 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
795 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
796 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
797 | ||
798 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
799 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
800 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
801 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
802 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
803 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
804 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
805 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
806 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
807 | &sensor_dev_attr_temp1_type.dev_attr.attr, | |
808 | &sensor_dev_attr_temp2_type.dev_attr.attr, | |
809 | &sensor_dev_attr_temp3_type.dev_attr.attr, | |
810 | ||
811 | &dev_attr_alarms.attr, | |
812 | NULL | |
813 | }; | |
814 | ||
815 | static const struct attribute_group it87_group = { | |
816 | .attrs = it87_attributes, | |
817 | }; | |
818 | ||
819 | static struct attribute *it87_attributes_opt[] = { | |
820 | &sensor_dev_attr_fan1_input16.dev_attr.attr, | |
821 | &sensor_dev_attr_fan1_min16.dev_attr.attr, | |
822 | &sensor_dev_attr_fan2_input16.dev_attr.attr, | |
823 | &sensor_dev_attr_fan2_min16.dev_attr.attr, | |
824 | &sensor_dev_attr_fan3_input16.dev_attr.attr, | |
825 | &sensor_dev_attr_fan3_min16.dev_attr.attr, | |
826 | ||
827 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
828 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
829 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
830 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
831 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
832 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
833 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
834 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
835 | &sensor_dev_attr_fan3_div.dev_attr.attr, | |
836 | ||
837 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
838 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
839 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
840 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
841 | &sensor_dev_attr_pwm2.dev_attr.attr, | |
842 | &sensor_dev_attr_pwm3.dev_attr.attr, | |
843 | ||
844 | &dev_attr_vrm.attr, | |
845 | &dev_attr_cpu0_vid.attr, | |
846 | NULL | |
847 | }; | |
848 | ||
849 | static const struct attribute_group it87_group_opt = { | |
850 | .attrs = it87_attributes_opt, | |
851 | }; | |
1da177e4 LT |
852 | |
853 | /* This function is called when: | |
854 | * it87_driver is inserted (when this module is loaded), for each | |
855 | available adapter | |
856 | * when a new adapter is inserted (and it87_driver is still present) */ | |
857 | static int it87_attach_adapter(struct i2c_adapter *adapter) | |
858 | { | |
859 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
860 | return 0; | |
2ed2dc3c | 861 | return i2c_probe(adapter, &addr_data, it87_detect); |
1da177e4 LT |
862 | } |
863 | ||
2d8672c5 JD |
864 | static int it87_isa_attach_adapter(struct i2c_adapter *adapter) |
865 | { | |
866 | return it87_detect(adapter, isa_address, -1); | |
867 | } | |
868 | ||
869 | /* SuperIO detection - will change isa_address if a chip is found */ | |
91749996 | 870 | static int __init it87_find(unsigned short *address) |
1da177e4 LT |
871 | { |
872 | int err = -ENODEV; | |
873 | ||
874 | superio_enter(); | |
875 | chip_type = superio_inw(DEVID); | |
876 | if (chip_type != IT8712F_DEVID | |
17d648bf | 877 | && chip_type != IT8716F_DEVID |
87673dd7 | 878 | && chip_type != IT8718F_DEVID |
1da177e4 LT |
879 | && chip_type != IT8705F_DEVID) |
880 | goto exit; | |
881 | ||
87673dd7 | 882 | superio_select(PME); |
1da177e4 LT |
883 | if (!(superio_inb(IT87_ACT_REG) & 0x01)) { |
884 | pr_info("it87: Device not activated, skipping\n"); | |
885 | goto exit; | |
886 | } | |
887 | ||
888 | *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); | |
889 | if (*address == 0) { | |
890 | pr_info("it87: Base address not set, skipping\n"); | |
891 | goto exit; | |
892 | } | |
893 | ||
894 | err = 0; | |
895 | pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", | |
896 | chip_type, *address, superio_inb(DEVREV) & 0x0f); | |
897 | ||
87673dd7 JD |
898 | /* Read GPIO config and VID value from LDN 7 (GPIO) */ |
899 | if (chip_type != IT8705F_DEVID) { | |
900 | int reg; | |
901 | ||
902 | superio_select(GPIO); | |
903 | if (chip_type == it8718) | |
904 | vid_value = superio_inb(IT87_SIO_VID_REG); | |
905 | ||
906 | reg = superio_inb(IT87_SIO_PINX2_REG); | |
907 | if (reg & (1 << 0)) | |
908 | pr_info("it87: in3 is VCC (+5V)\n"); | |
909 | if (reg & (1 << 1)) | |
910 | pr_info("it87: in7 is VCCH (+5V Stand-By)\n"); | |
911 | } | |
912 | ||
1da177e4 LT |
913 | exit: |
914 | superio_exit(); | |
915 | return err; | |
916 | } | |
917 | ||
2ed2dc3c | 918 | /* This function is called by i2c_probe */ |
c49efcef | 919 | static int it87_detect(struct i2c_adapter *adapter, int address, int kind) |
1da177e4 LT |
920 | { |
921 | int i; | |
922 | struct i2c_client *new_client; | |
923 | struct it87_data *data; | |
924 | int err = 0; | |
925 | const char *name = ""; | |
926 | int is_isa = i2c_is_isa_adapter(adapter); | |
927 | int enable_pwm_interface; | |
928 | ||
929 | if (!is_isa && | |
930 | !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
931 | goto ERROR0; | |
932 | ||
933 | /* Reserve the ISA region */ | |
934 | if (is_isa) | |
cdaf7934 LR |
935 | if (!request_region(address, IT87_EXTENT, |
936 | it87_isa_driver.driver.name)) | |
1da177e4 LT |
937 | goto ERROR0; |
938 | ||
91749996 | 939 | /* For now, we presume we have a valid client. We create the |
1da177e4 LT |
940 | client structure, even though we cannot fill it completely yet. |
941 | But it allows us to access it87_{read,write}_value. */ | |
942 | ||
ba9c2e8d | 943 | if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { |
1da177e4 LT |
944 | err = -ENOMEM; |
945 | goto ERROR1; | |
946 | } | |
1da177e4 LT |
947 | |
948 | new_client = &data->client; | |
949 | if (is_isa) | |
9a61bf63 | 950 | mutex_init(&data->lock); |
1da177e4 LT |
951 | i2c_set_clientdata(new_client, data); |
952 | new_client->addr = address; | |
953 | new_client->adapter = adapter; | |
fde09509 | 954 | new_client->driver = is_isa ? &it87_isa_driver : &it87_driver; |
1da177e4 LT |
955 | new_client->flags = 0; |
956 | ||
957 | /* Now, we do the remaining detection. */ | |
958 | ||
959 | if (kind < 0) { | |
960 | if ((it87_read_value(new_client, IT87_REG_CONFIG) & 0x80) | |
961 | || (!is_isa | |
962 | && it87_read_value(new_client, IT87_REG_I2C_ADDR) != address)) { | |
963 | err = -ENODEV; | |
964 | goto ERROR2; | |
965 | } | |
966 | } | |
967 | ||
968 | /* Determine the chip type. */ | |
969 | if (kind <= 0) { | |
970 | i = it87_read_value(new_client, IT87_REG_CHIPID); | |
971 | if (i == 0x90) { | |
972 | kind = it87; | |
17d648bf JD |
973 | if (is_isa) { |
974 | switch (chip_type) { | |
975 | case IT8712F_DEVID: | |
976 | kind = it8712; | |
977 | break; | |
978 | case IT8716F_DEVID: | |
979 | kind = it8716; | |
980 | break; | |
87673dd7 JD |
981 | case IT8718F_DEVID: |
982 | kind = it8718; | |
983 | break; | |
17d648bf JD |
984 | } |
985 | } | |
1da177e4 LT |
986 | } |
987 | else { | |
988 | if (kind == 0) | |
989 | dev_info(&adapter->dev, | |
990 | "Ignoring 'force' parameter for unknown chip at " | |
991 | "adapter %d, address 0x%02x\n", | |
992 | i2c_adapter_id(adapter), address); | |
993 | err = -ENODEV; | |
994 | goto ERROR2; | |
995 | } | |
996 | } | |
997 | ||
998 | if (kind == it87) { | |
999 | name = "it87"; | |
1000 | } else if (kind == it8712) { | |
1001 | name = "it8712"; | |
17d648bf JD |
1002 | } else if (kind == it8716) { |
1003 | name = "it8716"; | |
87673dd7 JD |
1004 | } else if (kind == it8718) { |
1005 | name = "it8718"; | |
1da177e4 LT |
1006 | } |
1007 | ||
1008 | /* Fill in the remaining client fields and put it into the global list */ | |
1009 | strlcpy(new_client->name, name, I2C_NAME_SIZE); | |
1010 | data->type = kind; | |
1011 | data->valid = 0; | |
9a61bf63 | 1012 | mutex_init(&data->update_lock); |
1da177e4 LT |
1013 | |
1014 | /* Tell the I2C layer a new client has arrived */ | |
1015 | if ((err = i2c_attach_client(new_client))) | |
1016 | goto ERROR2; | |
1017 | ||
c5e3fbf2 JD |
1018 | if (!is_isa) |
1019 | dev_info(&new_client->dev, "The I2C interface to IT87xxF " | |
1020 | "hardware monitoring chips is deprecated. Please " | |
1021 | "report if you still rely on it.\n"); | |
1022 | ||
1da177e4 LT |
1023 | /* Check PWM configuration */ |
1024 | enable_pwm_interface = it87_check_pwm(new_client); | |
1025 | ||
1026 | /* Initialize the IT87 chip */ | |
1027 | it87_init_client(new_client, data); | |
1028 | ||
1029 | /* Register sysfs hooks */ | |
87808be4 | 1030 | if ((err = sysfs_create_group(&new_client->dev.kobj, &it87_group))) |
943b0830 | 1031 | goto ERROR3; |
17d648bf | 1032 | |
9060f8bd | 1033 | /* Do not create fan files for disabled fans */ |
87673dd7 JD |
1034 | if (data->type == it8716 || data->type == it8718) { |
1035 | /* 16-bit tachometers */ | |
9060f8bd | 1036 | if (data->has_fan & (1 << 0)) { |
87808be4 JD |
1037 | if ((err = device_create_file(&new_client->dev, |
1038 | &sensor_dev_attr_fan1_input16.dev_attr)) | |
1039 | || (err = device_create_file(&new_client->dev, | |
1040 | &sensor_dev_attr_fan1_min16.dev_attr))) | |
1041 | goto ERROR4; | |
9060f8bd JD |
1042 | } |
1043 | if (data->has_fan & (1 << 1)) { | |
87808be4 JD |
1044 | if ((err = device_create_file(&new_client->dev, |
1045 | &sensor_dev_attr_fan2_input16.dev_attr)) | |
1046 | || (err = device_create_file(&new_client->dev, | |
1047 | &sensor_dev_attr_fan2_min16.dev_attr))) | |
1048 | goto ERROR4; | |
9060f8bd JD |
1049 | } |
1050 | if (data->has_fan & (1 << 2)) { | |
87808be4 JD |
1051 | if ((err = device_create_file(&new_client->dev, |
1052 | &sensor_dev_attr_fan3_input16.dev_attr)) | |
1053 | || (err = device_create_file(&new_client->dev, | |
1054 | &sensor_dev_attr_fan3_min16.dev_attr))) | |
1055 | goto ERROR4; | |
9060f8bd | 1056 | } |
17d648bf | 1057 | } else { |
87673dd7 | 1058 | /* 8-bit tachometers with clock divider */ |
9060f8bd | 1059 | if (data->has_fan & (1 << 0)) { |
87808be4 JD |
1060 | if ((err = device_create_file(&new_client->dev, |
1061 | &sensor_dev_attr_fan1_input.dev_attr)) | |
1062 | || (err = device_create_file(&new_client->dev, | |
1063 | &sensor_dev_attr_fan1_min.dev_attr)) | |
1064 | || (err = device_create_file(&new_client->dev, | |
1065 | &sensor_dev_attr_fan1_div.dev_attr))) | |
1066 | goto ERROR4; | |
9060f8bd JD |
1067 | } |
1068 | if (data->has_fan & (1 << 1)) { | |
87808be4 JD |
1069 | if ((err = device_create_file(&new_client->dev, |
1070 | &sensor_dev_attr_fan2_input.dev_attr)) | |
1071 | || (err = device_create_file(&new_client->dev, | |
1072 | &sensor_dev_attr_fan2_min.dev_attr)) | |
1073 | || (err = device_create_file(&new_client->dev, | |
1074 | &sensor_dev_attr_fan2_div.dev_attr))) | |
1075 | goto ERROR4; | |
9060f8bd JD |
1076 | } |
1077 | if (data->has_fan & (1 << 2)) { | |
87808be4 JD |
1078 | if ((err = device_create_file(&new_client->dev, |
1079 | &sensor_dev_attr_fan3_input.dev_attr)) | |
1080 | || (err = device_create_file(&new_client->dev, | |
1081 | &sensor_dev_attr_fan3_min.dev_attr)) | |
1082 | || (err = device_create_file(&new_client->dev, | |
1083 | &sensor_dev_attr_fan3_div.dev_attr))) | |
1084 | goto ERROR4; | |
9060f8bd | 1085 | } |
17d648bf JD |
1086 | } |
1087 | ||
1da177e4 | 1088 | if (enable_pwm_interface) { |
87808be4 JD |
1089 | if ((err = device_create_file(&new_client->dev, |
1090 | &sensor_dev_attr_pwm1_enable.dev_attr)) | |
1091 | || (err = device_create_file(&new_client->dev, | |
1092 | &sensor_dev_attr_pwm2_enable.dev_attr)) | |
1093 | || (err = device_create_file(&new_client->dev, | |
1094 | &sensor_dev_attr_pwm3_enable.dev_attr)) | |
1095 | || (err = device_create_file(&new_client->dev, | |
1096 | &sensor_dev_attr_pwm1.dev_attr)) | |
1097 | || (err = device_create_file(&new_client->dev, | |
1098 | &sensor_dev_attr_pwm2.dev_attr)) | |
1099 | || (err = device_create_file(&new_client->dev, | |
1100 | &sensor_dev_attr_pwm3.dev_attr))) | |
1101 | goto ERROR4; | |
1da177e4 LT |
1102 | } |
1103 | ||
87673dd7 JD |
1104 | if (data->type == it8712 || data->type == it8716 |
1105 | || data->type == it8718) { | |
303760b4 | 1106 | data->vrm = vid_which_vrm(); |
87673dd7 JD |
1107 | /* VID reading from Super-I/O config space if available */ |
1108 | data->vid = vid_value; | |
87808be4 JD |
1109 | if ((err = device_create_file(&new_client->dev, |
1110 | &dev_attr_vrm)) | |
1111 | || (err = device_create_file(&new_client->dev, | |
1112 | &dev_attr_cpu0_vid))) | |
1113 | goto ERROR4; | |
1114 | } | |
1115 | ||
1116 | data->class_dev = hwmon_device_register(&new_client->dev); | |
1117 | if (IS_ERR(data->class_dev)) { | |
1118 | err = PTR_ERR(data->class_dev); | |
1119 | goto ERROR4; | |
1da177e4 LT |
1120 | } |
1121 | ||
1122 | return 0; | |
1123 | ||
87808be4 JD |
1124 | ERROR4: |
1125 | sysfs_remove_group(&new_client->dev.kobj, &it87_group); | |
1126 | sysfs_remove_group(&new_client->dev.kobj, &it87_group_opt); | |
943b0830 MH |
1127 | ERROR3: |
1128 | i2c_detach_client(new_client); | |
1da177e4 LT |
1129 | ERROR2: |
1130 | kfree(data); | |
1131 | ERROR1: | |
1132 | if (is_isa) | |
1133 | release_region(address, IT87_EXTENT); | |
1134 | ERROR0: | |
1135 | return err; | |
1136 | } | |
1137 | ||
1138 | static int it87_detach_client(struct i2c_client *client) | |
1139 | { | |
943b0830 | 1140 | struct it87_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
1141 | int err; |
1142 | ||
943b0830 | 1143 | hwmon_device_unregister(data->class_dev); |
87808be4 JD |
1144 | sysfs_remove_group(&client->dev.kobj, &it87_group); |
1145 | sysfs_remove_group(&client->dev.kobj, &it87_group_opt); | |
943b0830 | 1146 | |
7bef5594 | 1147 | if ((err = i2c_detach_client(client))) |
1da177e4 | 1148 | return err; |
1da177e4 LT |
1149 | |
1150 | if(i2c_is_isa_client(client)) | |
1151 | release_region(client->addr, IT87_EXTENT); | |
943b0830 | 1152 | kfree(data); |
1da177e4 LT |
1153 | |
1154 | return 0; | |
1155 | } | |
1156 | ||
44bbe87e | 1157 | /* The SMBus locks itself, but ISA access must be locked explicitly! |
1da177e4 LT |
1158 | We don't want to lock the whole ISA bus, so we lock each client |
1159 | separately. | |
1160 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, | |
1161 | would slow down the IT87 access and should not be necessary. */ | |
1162 | static int it87_read_value(struct i2c_client *client, u8 reg) | |
1163 | { | |
1164 | struct it87_data *data = i2c_get_clientdata(client); | |
1165 | ||
1166 | int res; | |
1167 | if (i2c_is_isa_client(client)) { | |
9a61bf63 | 1168 | mutex_lock(&data->lock); |
1da177e4 LT |
1169 | outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); |
1170 | res = inb_p(client->addr + IT87_DATA_REG_OFFSET); | |
9a61bf63 | 1171 | mutex_unlock(&data->lock); |
1da177e4 LT |
1172 | return res; |
1173 | } else | |
1174 | return i2c_smbus_read_byte_data(client, reg); | |
1175 | } | |
1176 | ||
44bbe87e | 1177 | /* The SMBus locks itself, but ISA access muse be locked explicitly! |
1da177e4 LT |
1178 | We don't want to lock the whole ISA bus, so we lock each client |
1179 | separately. | |
1180 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, | |
1181 | would slow down the IT87 access and should not be necessary. */ | |
1182 | static int it87_write_value(struct i2c_client *client, u8 reg, u8 value) | |
1183 | { | |
1184 | struct it87_data *data = i2c_get_clientdata(client); | |
1185 | ||
1186 | if (i2c_is_isa_client(client)) { | |
9a61bf63 | 1187 | mutex_lock(&data->lock); |
1da177e4 LT |
1188 | outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); |
1189 | outb_p(value, client->addr + IT87_DATA_REG_OFFSET); | |
9a61bf63 | 1190 | mutex_unlock(&data->lock); |
1da177e4 LT |
1191 | return 0; |
1192 | } else | |
1193 | return i2c_smbus_write_byte_data(client, reg, value); | |
1194 | } | |
1195 | ||
1196 | /* Return 1 if and only if the PWM interface is safe to use */ | |
1197 | static int it87_check_pwm(struct i2c_client *client) | |
1198 | { | |
1199 | /* Some BIOSes fail to correctly configure the IT87 fans. All fans off | |
1200 | * and polarity set to active low is sign that this is the case so we | |
1201 | * disable pwm control to protect the user. */ | |
1202 | int tmp = it87_read_value(client, IT87_REG_FAN_CTL); | |
1203 | if ((tmp & 0x87) == 0) { | |
1204 | if (fix_pwm_polarity) { | |
1205 | /* The user asks us to attempt a chip reconfiguration. | |
1206 | * This means switching to active high polarity and | |
1207 | * inverting all fan speed values. */ | |
1208 | int i; | |
1209 | u8 pwm[3]; | |
1210 | ||
1211 | for (i = 0; i < 3; i++) | |
1212 | pwm[i] = it87_read_value(client, | |
1213 | IT87_REG_PWM(i)); | |
1214 | ||
1215 | /* If any fan is in automatic pwm mode, the polarity | |
1216 | * might be correct, as suspicious as it seems, so we | |
1217 | * better don't change anything (but still disable the | |
1218 | * PWM interface). */ | |
1219 | if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { | |
1220 | dev_info(&client->dev, "Reconfiguring PWM to " | |
1221 | "active high polarity\n"); | |
1222 | it87_write_value(client, IT87_REG_FAN_CTL, | |
1223 | tmp | 0x87); | |
1224 | for (i = 0; i < 3; i++) | |
1225 | it87_write_value(client, | |
1226 | IT87_REG_PWM(i), | |
1227 | 0x7f & ~pwm[i]); | |
1228 | return 1; | |
1229 | } | |
1230 | ||
1231 | dev_info(&client->dev, "PWM configuration is " | |
1232 | "too broken to be fixed\n"); | |
1233 | } | |
1234 | ||
1235 | dev_info(&client->dev, "Detected broken BIOS " | |
1236 | "defaults, disabling PWM interface\n"); | |
1237 | return 0; | |
1238 | } else if (fix_pwm_polarity) { | |
1239 | dev_info(&client->dev, "PWM configuration looks " | |
1240 | "sane, won't touch\n"); | |
1241 | } | |
1242 | ||
1243 | return 1; | |
1244 | } | |
1245 | ||
1246 | /* Called when we have found a new IT87. */ | |
1247 | static void it87_init_client(struct i2c_client *client, struct it87_data *data) | |
1248 | { | |
1249 | int tmp, i; | |
1250 | ||
1251 | /* initialize to sane defaults: | |
1252 | * - if the chip is in manual pwm mode, this will be overwritten with | |
1253 | * the actual settings on the chip (so in this case, initialization | |
1254 | * is not needed) | |
1255 | * - if in automatic or on/off mode, we could switch to manual mode, | |
1256 | * read the registers and set manual_pwm_ctl accordingly, but currently | |
1257 | * this is not implemented, so we initialize to something sane */ | |
1258 | for (i = 0; i < 3; i++) { | |
1259 | data->manual_pwm_ctl[i] = 0xff; | |
1260 | } | |
1261 | ||
c5df9b7a JD |
1262 | /* Some chips seem to have default value 0xff for all limit |
1263 | * registers. For low voltage limits it makes no sense and triggers | |
1264 | * alarms, so change to 0 instead. For high temperature limits, it | |
1265 | * means -1 degree C, which surprisingly doesn't trigger an alarm, | |
1266 | * but is still confusing, so change to 127 degrees C. */ | |
1267 | for (i = 0; i < 8; i++) { | |
1268 | tmp = it87_read_value(client, IT87_REG_VIN_MIN(i)); | |
1269 | if (tmp == 0xff) | |
1270 | it87_write_value(client, IT87_REG_VIN_MIN(i), 0); | |
1271 | } | |
1272 | for (i = 0; i < 3; i++) { | |
1273 | tmp = it87_read_value(client, IT87_REG_TEMP_HIGH(i)); | |
1274 | if (tmp == 0xff) | |
1275 | it87_write_value(client, IT87_REG_TEMP_HIGH(i), 127); | |
1276 | } | |
1277 | ||
1da177e4 LT |
1278 | /* Check if temperature channnels are reset manually or by some reason */ |
1279 | tmp = it87_read_value(client, IT87_REG_TEMP_ENABLE); | |
1280 | if ((tmp & 0x3f) == 0) { | |
1281 | /* Temp1,Temp3=thermistor; Temp2=thermal diode */ | |
1282 | tmp = (tmp & 0xc0) | 0x2a; | |
1283 | it87_write_value(client, IT87_REG_TEMP_ENABLE, tmp); | |
1284 | } | |
1285 | data->sensor = tmp; | |
1286 | ||
1287 | /* Check if voltage monitors are reset manually or by some reason */ | |
1288 | tmp = it87_read_value(client, IT87_REG_VIN_ENABLE); | |
1289 | if ((tmp & 0xff) == 0) { | |
1290 | /* Enable all voltage monitors */ | |
1291 | it87_write_value(client, IT87_REG_VIN_ENABLE, 0xff); | |
1292 | } | |
1293 | ||
1294 | /* Check if tachometers are reset manually or by some reason */ | |
1295 | data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL); | |
1296 | if ((data->fan_main_ctrl & 0x70) == 0) { | |
1297 | /* Enable all fan tachometers */ | |
1298 | data->fan_main_ctrl |= 0x70; | |
1299 | it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); | |
1300 | } | |
9060f8bd | 1301 | data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; |
1da177e4 | 1302 | |
17d648bf | 1303 | /* Set tachometers to 16-bit mode if needed */ |
87673dd7 | 1304 | if (data->type == it8716 || data->type == it8718) { |
17d648bf | 1305 | tmp = it87_read_value(client, IT87_REG_FAN_16BIT); |
9060f8bd | 1306 | if (~tmp & 0x07 & data->has_fan) { |
17d648bf JD |
1307 | dev_dbg(&client->dev, |
1308 | "Setting fan1-3 to 16-bit mode\n"); | |
1309 | it87_write_value(client, IT87_REG_FAN_16BIT, | |
1310 | tmp | 0x07); | |
1311 | } | |
1312 | } | |
1313 | ||
1da177e4 LT |
1314 | /* Set current fan mode registers and the default settings for the |
1315 | * other mode registers */ | |
1316 | for (i = 0; i < 3; i++) { | |
1317 | if (data->fan_main_ctrl & (1 << i)) { | |
1318 | /* pwm mode */ | |
1319 | tmp = it87_read_value(client, IT87_REG_PWM(i)); | |
1320 | if (tmp & 0x80) { | |
1321 | /* automatic pwm - not yet implemented, but | |
1322 | * leave the settings made by the BIOS alone | |
1323 | * until a change is requested via the sysfs | |
1324 | * interface */ | |
1325 | } else { | |
1326 | /* manual pwm */ | |
1327 | data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp); | |
1328 | } | |
1329 | } | |
1330 | } | |
1331 | ||
1332 | /* Start monitoring */ | |
1333 | it87_write_value(client, IT87_REG_CONFIG, | |
1334 | (it87_read_value(client, IT87_REG_CONFIG) & 0x36) | |
1335 | | (update_vbat ? 0x41 : 0x01)); | |
1336 | } | |
1337 | ||
1338 | static struct it87_data *it87_update_device(struct device *dev) | |
1339 | { | |
1340 | struct i2c_client *client = to_i2c_client(dev); | |
1341 | struct it87_data *data = i2c_get_clientdata(client); | |
1342 | int i; | |
1343 | ||
9a61bf63 | 1344 | mutex_lock(&data->update_lock); |
1da177e4 LT |
1345 | |
1346 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
1347 | || !data->valid) { | |
1348 | ||
1349 | if (update_vbat) { | |
1350 | /* Cleared after each update, so reenable. Value | |
1351 | returned by this read will be previous value */ | |
1352 | it87_write_value(client, IT87_REG_CONFIG, | |
1353 | it87_read_value(client, IT87_REG_CONFIG) | 0x40); | |
1354 | } | |
1355 | for (i = 0; i <= 7; i++) { | |
1356 | data->in[i] = | |
1357 | it87_read_value(client, IT87_REG_VIN(i)); | |
1358 | data->in_min[i] = | |
1359 | it87_read_value(client, IT87_REG_VIN_MIN(i)); | |
1360 | data->in_max[i] = | |
1361 | it87_read_value(client, IT87_REG_VIN_MAX(i)); | |
1362 | } | |
3543a53f | 1363 | /* in8 (battery) has no limit registers */ |
1da177e4 LT |
1364 | data->in[8] = |
1365 | it87_read_value(client, IT87_REG_VIN(8)); | |
1da177e4 LT |
1366 | |
1367 | for (i = 0; i < 3; i++) { | |
9060f8bd JD |
1368 | /* Skip disabled fans */ |
1369 | if (!(data->has_fan & (1 << i))) | |
1370 | continue; | |
1371 | ||
1da177e4 LT |
1372 | data->fan_min[i] = |
1373 | it87_read_value(client, IT87_REG_FAN_MIN(i)); | |
17d648bf JD |
1374 | data->fan[i] = it87_read_value(client, |
1375 | IT87_REG_FAN(i)); | |
1376 | /* Add high byte if in 16-bit mode */ | |
87673dd7 | 1377 | if (data->type == it8716 || data->type == it8718) { |
17d648bf JD |
1378 | data->fan[i] |= it87_read_value(client, |
1379 | IT87_REG_FANX(i)) << 8; | |
1380 | data->fan_min[i] |= it87_read_value(client, | |
1381 | IT87_REG_FANX_MIN(i)) << 8; | |
1382 | } | |
1da177e4 LT |
1383 | } |
1384 | for (i = 0; i < 3; i++) { | |
1385 | data->temp[i] = | |
1386 | it87_read_value(client, IT87_REG_TEMP(i)); | |
1387 | data->temp_high[i] = | |
1388 | it87_read_value(client, IT87_REG_TEMP_HIGH(i)); | |
1389 | data->temp_low[i] = | |
1390 | it87_read_value(client, IT87_REG_TEMP_LOW(i)); | |
1391 | } | |
1392 | ||
17d648bf | 1393 | /* Newer chips don't have clock dividers */ |
87673dd7 JD |
1394 | if ((data->has_fan & 0x07) && data->type != it8716 |
1395 | && data->type != it8718) { | |
17d648bf JD |
1396 | i = it87_read_value(client, IT87_REG_FAN_DIV); |
1397 | data->fan_div[0] = i & 0x07; | |
1398 | data->fan_div[1] = (i >> 3) & 0x07; | |
1399 | data->fan_div[2] = (i & 0x40) ? 3 : 1; | |
1400 | } | |
1da177e4 LT |
1401 | |
1402 | data->alarms = | |
1403 | it87_read_value(client, IT87_REG_ALARM1) | | |
1404 | (it87_read_value(client, IT87_REG_ALARM2) << 8) | | |
1405 | (it87_read_value(client, IT87_REG_ALARM3) << 16); | |
1406 | data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL); | |
1407 | ||
1408 | data->sensor = it87_read_value(client, IT87_REG_TEMP_ENABLE); | |
1409 | /* The 8705 does not have VID capability */ | |
17d648bf | 1410 | if (data->type == it8712 || data->type == it8716) { |
1da177e4 | 1411 | data->vid = it87_read_value(client, IT87_REG_VID); |
17d648bf JD |
1412 | /* The older IT8712F revisions had only 5 VID pins, |
1413 | but we assume it is always safe to read 6 bits. */ | |
1414 | data->vid &= 0x3f; | |
1da177e4 LT |
1415 | } |
1416 | data->last_updated = jiffies; | |
1417 | data->valid = 1; | |
1418 | } | |
1419 | ||
9a61bf63 | 1420 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1421 | |
1422 | return data; | |
1423 | } | |
1424 | ||
1425 | static int __init sm_it87_init(void) | |
1426 | { | |
91749996 | 1427 | int res; |
fde09509 JD |
1428 | |
1429 | res = i2c_add_driver(&it87_driver); | |
1430 | if (res) | |
1431 | return res; | |
1432 | ||
91749996 JD |
1433 | if (!it87_find(&isa_address)) { |
1434 | res = i2c_isa_add_driver(&it87_isa_driver); | |
1435 | if (res) { | |
1436 | i2c_del_driver(&it87_driver); | |
1437 | return res; | |
1438 | } | |
fde09509 JD |
1439 | } |
1440 | ||
1441 | return 0; | |
1da177e4 LT |
1442 | } |
1443 | ||
1444 | static void __exit sm_it87_exit(void) | |
1445 | { | |
be79c383 JD |
1446 | if (isa_address) |
1447 | i2c_isa_del_driver(&it87_isa_driver); | |
1da177e4 LT |
1448 | i2c_del_driver(&it87_driver); |
1449 | } | |
1450 | ||
1451 | ||
b19367c6 JD |
1452 | MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>, " |
1453 | "Jean Delvare <khali@linux-fr.org>"); | |
87673dd7 | 1454 | MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F, SiS950 driver"); |
1da177e4 LT |
1455 | module_param(update_vbat, bool, 0); |
1456 | MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); | |
1457 | module_param(fix_pwm_polarity, bool, 0); | |
1458 | MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)"); | |
1459 | MODULE_LICENSE("GPL"); | |
1460 | ||
1461 | module_init(sm_it87_init); | |
1462 | module_exit(sm_it87_exit); |