Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | it87.c - Part of lm_sensors, Linux kernel modules for hardware | |
3 | monitoring. | |
4 | ||
87b4b663 BH |
5 | The IT8705F is an LPC-based Super I/O part that contains UARTs, a |
6 | parallel port, an IR port, a MIDI port, a floppy controller, etc., in | |
7 | addition to an Environment Controller (Enhanced Hardware Monitor and | |
8 | Fan Controller) | |
9 | ||
10 | This driver supports only the Environment Controller in the IT8705F and | |
11 | similar parts. The other devices are supported by different drivers. | |
12 | ||
91749996 | 13 | Supports: IT8705F Super I/O chip w/LPC interface |
8e9afcbb | 14 | IT8712F Super I/O chip w/LPC interface |
17d648bf | 15 | IT8716F Super I/O chip w/LPC interface |
87673dd7 | 16 | IT8718F Super I/O chip w/LPC interface |
08a8f6e9 | 17 | IT8726F Super I/O chip w/LPC interface |
1da177e4 LT |
18 | Sis950 A clone of the IT8705F |
19 | ||
20 | Copyright (C) 2001 Chris Gauthron <chrisg@0-in.com> | |
b19367c6 | 21 | Copyright (C) 2005-2006 Jean Delvare <khali@linux-fr.org> |
1da177e4 LT |
22 | |
23 | This program is free software; you can redistribute it and/or modify | |
24 | it under the terms of the GNU General Public License as published by | |
25 | the Free Software Foundation; either version 2 of the License, or | |
26 | (at your option) any later version. | |
27 | ||
28 | This program is distributed in the hope that it will be useful, | |
29 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
30 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
31 | GNU General Public License for more details. | |
32 | ||
33 | You should have received a copy of the GNU General Public License | |
34 | along with this program; if not, write to the Free Software | |
35 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
36 | */ | |
37 | ||
1da177e4 LT |
38 | #include <linux/module.h> |
39 | #include <linux/init.h> | |
40 | #include <linux/slab.h> | |
41 | #include <linux/jiffies.h> | |
b74f3fdd | 42 | #include <linux/platform_device.h> |
943b0830 | 43 | #include <linux/hwmon.h> |
303760b4 JD |
44 | #include <linux/hwmon-sysfs.h> |
45 | #include <linux/hwmon-vid.h> | |
943b0830 | 46 | #include <linux/err.h> |
9a61bf63 | 47 | #include <linux/mutex.h> |
87808be4 | 48 | #include <linux/sysfs.h> |
1da177e4 LT |
49 | #include <asm/io.h> |
50 | ||
b74f3fdd | 51 | #define DRVNAME "it87" |
1da177e4 | 52 | |
8e9afcbb | 53 | enum chips { it87, it8712, it8716, it8718 }; |
1da177e4 | 54 | |
b74f3fdd | 55 | static struct platform_device *pdev; |
56 | ||
1da177e4 LT |
57 | #define REG 0x2e /* The register to read/write */ |
58 | #define DEV 0x07 /* Register: Logical device select */ | |
59 | #define VAL 0x2f /* The value to read/write */ | |
60 | #define PME 0x04 /* The device with the fan registers in it */ | |
87673dd7 | 61 | #define GPIO 0x07 /* The device with the IT8718F VID value in it */ |
1da177e4 LT |
62 | #define DEVID 0x20 /* Register: Device ID */ |
63 | #define DEVREV 0x22 /* Register: Device Revision */ | |
64 | ||
65 | static inline int | |
66 | superio_inb(int reg) | |
67 | { | |
68 | outb(reg, REG); | |
69 | return inb(VAL); | |
70 | } | |
71 | ||
72 | static int superio_inw(int reg) | |
73 | { | |
74 | int val; | |
75 | outb(reg++, REG); | |
76 | val = inb(VAL) << 8; | |
77 | outb(reg, REG); | |
78 | val |= inb(VAL); | |
79 | return val; | |
80 | } | |
81 | ||
82 | static inline void | |
87673dd7 | 83 | superio_select(int ldn) |
1da177e4 LT |
84 | { |
85 | outb(DEV, REG); | |
87673dd7 | 86 | outb(ldn, VAL); |
1da177e4 LT |
87 | } |
88 | ||
89 | static inline void | |
90 | superio_enter(void) | |
91 | { | |
92 | outb(0x87, REG); | |
93 | outb(0x01, REG); | |
94 | outb(0x55, REG); | |
95 | outb(0x55, REG); | |
96 | } | |
97 | ||
98 | static inline void | |
99 | superio_exit(void) | |
100 | { | |
101 | outb(0x02, REG); | |
102 | outb(0x02, VAL); | |
103 | } | |
104 | ||
87673dd7 | 105 | /* Logical device 4 registers */ |
1da177e4 LT |
106 | #define IT8712F_DEVID 0x8712 |
107 | #define IT8705F_DEVID 0x8705 | |
17d648bf | 108 | #define IT8716F_DEVID 0x8716 |
87673dd7 | 109 | #define IT8718F_DEVID 0x8718 |
08a8f6e9 | 110 | #define IT8726F_DEVID 0x8726 |
1da177e4 LT |
111 | #define IT87_ACT_REG 0x30 |
112 | #define IT87_BASE_REG 0x60 | |
113 | ||
87673dd7 JD |
114 | /* Logical device 7 registers (IT8712F and later) */ |
115 | #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ | |
116 | #define IT87_SIO_VID_REG 0xfc /* VID value */ | |
117 | ||
1da177e4 LT |
118 | /* Update battery voltage after every reading if true */ |
119 | static int update_vbat; | |
120 | ||
121 | /* Not all BIOSes properly configure the PWM registers */ | |
122 | static int fix_pwm_polarity; | |
123 | ||
1da177e4 LT |
124 | /* Many IT87 constants specified below */ |
125 | ||
126 | /* Length of ISA address segment */ | |
127 | #define IT87_EXTENT 8 | |
128 | ||
87b4b663 BH |
129 | /* Length of ISA address segment for Environmental Controller */ |
130 | #define IT87_EC_EXTENT 2 | |
131 | ||
132 | /* Offset of EC registers from ISA base address */ | |
133 | #define IT87_EC_OFFSET 5 | |
134 | ||
135 | /* Where are the ISA address/data registers relative to the EC base address */ | |
136 | #define IT87_ADDR_REG_OFFSET 0 | |
137 | #define IT87_DATA_REG_OFFSET 1 | |
1da177e4 LT |
138 | |
139 | /*----- The IT87 registers -----*/ | |
140 | ||
141 | #define IT87_REG_CONFIG 0x00 | |
142 | ||
143 | #define IT87_REG_ALARM1 0x01 | |
144 | #define IT87_REG_ALARM2 0x02 | |
145 | #define IT87_REG_ALARM3 0x03 | |
146 | ||
87673dd7 JD |
147 | /* The IT8718F has the VID value in a different register, in Super-I/O |
148 | configuration space. */ | |
1da177e4 | 149 | #define IT87_REG_VID 0x0a |
17d648bf JD |
150 | /* Warning: register 0x0b is used for something completely different in |
151 | new chips/revisions. I suspect only 16-bit tachometer mode will work | |
152 | for these. */ | |
1da177e4 | 153 | #define IT87_REG_FAN_DIV 0x0b |
17d648bf | 154 | #define IT87_REG_FAN_16BIT 0x0c |
1da177e4 LT |
155 | |
156 | /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ | |
157 | ||
c7f1f716 JD |
158 | static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 }; |
159 | static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 }; | |
160 | static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 }; | |
161 | static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 }; | |
1da177e4 LT |
162 | #define IT87_REG_FAN_MAIN_CTRL 0x13 |
163 | #define IT87_REG_FAN_CTL 0x14 | |
164 | #define IT87_REG_PWM(nr) (0x15 + (nr)) | |
165 | ||
166 | #define IT87_REG_VIN(nr) (0x20 + (nr)) | |
167 | #define IT87_REG_TEMP(nr) (0x29 + (nr)) | |
168 | ||
169 | #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) | |
170 | #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) | |
171 | #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) | |
172 | #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) | |
173 | ||
1da177e4 LT |
174 | #define IT87_REG_VIN_ENABLE 0x50 |
175 | #define IT87_REG_TEMP_ENABLE 0x51 | |
176 | ||
177 | #define IT87_REG_CHIPID 0x58 | |
178 | ||
179 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255)) | |
180 | #define IN_FROM_REG(val) ((val) * 16) | |
181 | ||
182 | static inline u8 FAN_TO_REG(long rpm, int div) | |
183 | { | |
184 | if (rpm == 0) | |
185 | return 255; | |
186 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
187 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, | |
188 | 254); | |
189 | } | |
190 | ||
17d648bf JD |
191 | static inline u16 FAN16_TO_REG(long rpm) |
192 | { | |
193 | if (rpm == 0) | |
194 | return 0xffff; | |
195 | return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); | |
196 | } | |
197 | ||
1da177e4 | 198 | #define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div))) |
17d648bf JD |
199 | /* The divider is fixed to 2 in 16-bit mode */ |
200 | #define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2)) | |
1da177e4 LT |
201 | |
202 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\ | |
203 | ((val)+500)/1000),-128,127)) | |
204 | #define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000) | |
205 | ||
1da177e4 LT |
206 | #define PWM_TO_REG(val) ((val) >> 1) |
207 | #define PWM_FROM_REG(val) (((val)&0x7f) << 1) | |
208 | ||
209 | static int DIV_TO_REG(int val) | |
210 | { | |
211 | int answer = 0; | |
b9e349f7 | 212 | while (answer < 7 && (val >>= 1)) |
1da177e4 LT |
213 | answer++; |
214 | return answer; | |
215 | } | |
216 | #define DIV_FROM_REG(val) (1 << (val)) | |
217 | ||
f8d0c19a JD |
218 | static const unsigned int pwm_freq[8] = { |
219 | 48000000 / 128, | |
220 | 24000000 / 128, | |
221 | 12000000 / 128, | |
222 | 8000000 / 128, | |
223 | 6000000 / 128, | |
224 | 3000000 / 128, | |
225 | 1500000 / 128, | |
226 | 750000 / 128, | |
227 | }; | |
228 | ||
1da177e4 | 229 | |
b74f3fdd | 230 | struct it87_sio_data { |
231 | enum chips type; | |
232 | /* Values read from Super-I/O config space */ | |
233 | u8 vid_value; | |
234 | }; | |
235 | ||
ed6bafbf JD |
236 | /* For each registered chip, we need to keep some data in memory. |
237 | The structure is dynamically allocated. */ | |
1da177e4 | 238 | struct it87_data { |
1beeffe4 | 239 | struct device *hwmon_dev; |
1da177e4 LT |
240 | enum chips type; |
241 | ||
b74f3fdd | 242 | unsigned short addr; |
243 | const char *name; | |
9a61bf63 | 244 | struct mutex update_lock; |
1da177e4 LT |
245 | char valid; /* !=0 if following fields are valid */ |
246 | unsigned long last_updated; /* In jiffies */ | |
247 | ||
248 | u8 in[9]; /* Register value */ | |
3543a53f JD |
249 | u8 in_max[8]; /* Register value */ |
250 | u8 in_min[8]; /* Register value */ | |
9060f8bd | 251 | u8 has_fan; /* Bitfield, fans enabled */ |
c7f1f716 JD |
252 | u16 fan[5]; /* Register values, possibly combined */ |
253 | u16 fan_min[5]; /* Register values, possibly combined */ | |
1da177e4 LT |
254 | u8 temp[3]; /* Register value */ |
255 | u8 temp_high[3]; /* Register value */ | |
256 | u8 temp_low[3]; /* Register value */ | |
257 | u8 sensor; /* Register value */ | |
258 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
259 | u8 vid; /* Register encoding, combined */ | |
a7be58a1 | 260 | u8 vrm; |
1da177e4 LT |
261 | u32 alarms; /* Register encoding, combined */ |
262 | u8 fan_main_ctrl; /* Register value */ | |
f8d0c19a | 263 | u8 fan_ctl; /* Register value */ |
1da177e4 LT |
264 | u8 manual_pwm_ctl[3]; /* manual PWM value set by user */ |
265 | }; | |
266 | ||
267 | ||
b74f3fdd | 268 | static int it87_probe(struct platform_device *pdev); |
d0546128 | 269 | static int __devexit it87_remove(struct platform_device *pdev); |
1da177e4 | 270 | |
b74f3fdd | 271 | static int it87_read_value(struct it87_data *data, u8 reg); |
272 | static void it87_write_value(struct it87_data *data, u8 reg, u8 value); | |
1da177e4 | 273 | static struct it87_data *it87_update_device(struct device *dev); |
b74f3fdd | 274 | static int it87_check_pwm(struct device *dev); |
275 | static void it87_init_device(struct platform_device *pdev); | |
1da177e4 LT |
276 | |
277 | ||
b74f3fdd | 278 | static struct platform_driver it87_driver = { |
cdaf7934 | 279 | .driver = { |
87218842 | 280 | .owner = THIS_MODULE, |
b74f3fdd | 281 | .name = DRVNAME, |
cdaf7934 | 282 | }, |
b74f3fdd | 283 | .probe = it87_probe, |
284 | .remove = __devexit_p(it87_remove), | |
fde09509 JD |
285 | }; |
286 | ||
20ad93d4 JD |
287 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
288 | char *buf) | |
1da177e4 | 289 | { |
20ad93d4 JD |
290 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
291 | int nr = sensor_attr->index; | |
292 | ||
1da177e4 LT |
293 | struct it87_data *data = it87_update_device(dev); |
294 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); | |
295 | } | |
296 | ||
20ad93d4 JD |
297 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, |
298 | char *buf) | |
1da177e4 | 299 | { |
20ad93d4 JD |
300 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
301 | int nr = sensor_attr->index; | |
302 | ||
1da177e4 LT |
303 | struct it87_data *data = it87_update_device(dev); |
304 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); | |
305 | } | |
306 | ||
20ad93d4 JD |
307 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, |
308 | char *buf) | |
1da177e4 | 309 | { |
20ad93d4 JD |
310 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
311 | int nr = sensor_attr->index; | |
312 | ||
1da177e4 LT |
313 | struct it87_data *data = it87_update_device(dev); |
314 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); | |
315 | } | |
316 | ||
20ad93d4 JD |
317 | static ssize_t set_in_min(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 | ||
b74f3fdd | 323 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
324 | unsigned long val = simple_strtoul(buf, NULL, 10); |
325 | ||
9a61bf63 | 326 | mutex_lock(&data->update_lock); |
1da177e4 | 327 | data->in_min[nr] = IN_TO_REG(val); |
b74f3fdd | 328 | it87_write_value(data, IT87_REG_VIN_MIN(nr), |
1da177e4 | 329 | data->in_min[nr]); |
9a61bf63 | 330 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
331 | return count; |
332 | } | |
20ad93d4 JD |
333 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
334 | const char *buf, size_t count) | |
1da177e4 | 335 | { |
20ad93d4 JD |
336 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
337 | int nr = sensor_attr->index; | |
338 | ||
b74f3fdd | 339 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
340 | unsigned long val = simple_strtoul(buf, NULL, 10); |
341 | ||
9a61bf63 | 342 | mutex_lock(&data->update_lock); |
1da177e4 | 343 | data->in_max[nr] = IN_TO_REG(val); |
b74f3fdd | 344 | it87_write_value(data, IT87_REG_VIN_MAX(nr), |
1da177e4 | 345 | data->in_max[nr]); |
9a61bf63 | 346 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
347 | return count; |
348 | } | |
349 | ||
350 | #define show_in_offset(offset) \ | |
20ad93d4 JD |
351 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
352 | show_in, NULL, offset); | |
1da177e4 LT |
353 | |
354 | #define limit_in_offset(offset) \ | |
20ad93d4 JD |
355 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
356 | show_in_min, set_in_min, offset); \ | |
357 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
358 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
359 | |
360 | show_in_offset(0); | |
361 | limit_in_offset(0); | |
362 | show_in_offset(1); | |
363 | limit_in_offset(1); | |
364 | show_in_offset(2); | |
365 | limit_in_offset(2); | |
366 | show_in_offset(3); | |
367 | limit_in_offset(3); | |
368 | show_in_offset(4); | |
369 | limit_in_offset(4); | |
370 | show_in_offset(5); | |
371 | limit_in_offset(5); | |
372 | show_in_offset(6); | |
373 | limit_in_offset(6); | |
374 | show_in_offset(7); | |
375 | limit_in_offset(7); | |
376 | show_in_offset(8); | |
377 | ||
378 | /* 3 temperatures */ | |
20ad93d4 JD |
379 | static ssize_t show_temp(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[nr])); | |
387 | } | |
20ad93d4 JD |
388 | static ssize_t show_temp_max(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_high[nr])); | |
396 | } | |
20ad93d4 JD |
397 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
398 | char *buf) | |
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 it87_data *data = it87_update_device(dev); |
404 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); | |
405 | } | |
20ad93d4 JD |
406 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
407 | const char *buf, size_t count) | |
1da177e4 | 408 | { |
20ad93d4 JD |
409 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
410 | int nr = sensor_attr->index; | |
411 | ||
b74f3fdd | 412 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
413 | int val = simple_strtol(buf, NULL, 10); |
414 | ||
9a61bf63 | 415 | mutex_lock(&data->update_lock); |
1da177e4 | 416 | data->temp_high[nr] = TEMP_TO_REG(val); |
b74f3fdd | 417 | it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); |
9a61bf63 | 418 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
419 | return count; |
420 | } | |
20ad93d4 JD |
421 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
422 | const char *buf, size_t count) | |
1da177e4 | 423 | { |
20ad93d4 JD |
424 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
425 | int nr = sensor_attr->index; | |
426 | ||
b74f3fdd | 427 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
428 | int val = simple_strtol(buf, NULL, 10); |
429 | ||
9a61bf63 | 430 | mutex_lock(&data->update_lock); |
1da177e4 | 431 | data->temp_low[nr] = TEMP_TO_REG(val); |
b74f3fdd | 432 | it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); |
9a61bf63 | 433 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
434 | return count; |
435 | } | |
436 | #define show_temp_offset(offset) \ | |
20ad93d4 JD |
437 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
438 | show_temp, NULL, offset - 1); \ | |
439 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
440 | show_temp_max, set_temp_max, offset - 1); \ | |
441 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
442 | show_temp_min, set_temp_min, offset - 1); | |
1da177e4 LT |
443 | |
444 | show_temp_offset(1); | |
445 | show_temp_offset(2); | |
446 | show_temp_offset(3); | |
447 | ||
20ad93d4 JD |
448 | static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, |
449 | char *buf) | |
1da177e4 | 450 | { |
20ad93d4 JD |
451 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
452 | int nr = sensor_attr->index; | |
453 | ||
1da177e4 LT |
454 | struct it87_data *data = it87_update_device(dev); |
455 | u8 reg = data->sensor; /* In case the value is updated while we use it */ | |
456 | ||
457 | if (reg & (1 << nr)) | |
458 | return sprintf(buf, "3\n"); /* thermal diode */ | |
459 | if (reg & (8 << nr)) | |
460 | return sprintf(buf, "2\n"); /* thermistor */ | |
461 | return sprintf(buf, "0\n"); /* disabled */ | |
462 | } | |
20ad93d4 JD |
463 | static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, |
464 | const char *buf, size_t count) | |
1da177e4 | 465 | { |
20ad93d4 JD |
466 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
467 | int nr = sensor_attr->index; | |
468 | ||
b74f3fdd | 469 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
470 | int val = simple_strtol(buf, NULL, 10); |
471 | ||
9a61bf63 | 472 | mutex_lock(&data->update_lock); |
1da177e4 LT |
473 | |
474 | data->sensor &= ~(1 << nr); | |
475 | data->sensor &= ~(8 << nr); | |
476 | /* 3 = thermal diode; 2 = thermistor; 0 = disabled */ | |
477 | if (val == 3) | |
478 | data->sensor |= 1 << nr; | |
479 | else if (val == 2) | |
480 | data->sensor |= 8 << nr; | |
481 | else if (val != 0) { | |
9a61bf63 | 482 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
483 | return -EINVAL; |
484 | } | |
b74f3fdd | 485 | it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); |
9a61bf63 | 486 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
487 | return count; |
488 | } | |
489 | #define show_sensor_offset(offset) \ | |
20ad93d4 JD |
490 | static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ |
491 | show_sensor, set_sensor, offset - 1); | |
1da177e4 LT |
492 | |
493 | show_sensor_offset(1); | |
494 | show_sensor_offset(2); | |
495 | show_sensor_offset(3); | |
496 | ||
497 | /* 3 Fans */ | |
20ad93d4 JD |
498 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
499 | char *buf) | |
1da177e4 | 500 | { |
20ad93d4 JD |
501 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
502 | int nr = sensor_attr->index; | |
503 | ||
1da177e4 LT |
504 | struct it87_data *data = it87_update_device(dev); |
505 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr], | |
506 | DIV_FROM_REG(data->fan_div[nr]))); | |
507 | } | |
20ad93d4 JD |
508 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
509 | char *buf) | |
1da177e4 | 510 | { |
20ad93d4 JD |
511 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
512 | int nr = sensor_attr->index; | |
513 | ||
1da177e4 LT |
514 | struct it87_data *data = it87_update_device(dev); |
515 | return sprintf(buf,"%d\n", | |
516 | FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); | |
517 | } | |
20ad93d4 JD |
518 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
519 | char *buf) | |
1da177e4 | 520 | { |
20ad93d4 JD |
521 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
522 | int nr = sensor_attr->index; | |
523 | ||
1da177e4 LT |
524 | struct it87_data *data = it87_update_device(dev); |
525 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
526 | } | |
20ad93d4 JD |
527 | static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, |
528 | char *buf) | |
1da177e4 | 529 | { |
20ad93d4 JD |
530 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
531 | int nr = sensor_attr->index; | |
532 | ||
1da177e4 LT |
533 | struct it87_data *data = it87_update_device(dev); |
534 | return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0); | |
535 | } | |
20ad93d4 JD |
536 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
537 | char *buf) | |
1da177e4 | 538 | { |
20ad93d4 JD |
539 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
540 | int nr = sensor_attr->index; | |
541 | ||
1da177e4 LT |
542 | struct it87_data *data = it87_update_device(dev); |
543 | return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]); | |
544 | } | |
f8d0c19a JD |
545 | static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, |
546 | char *buf) | |
547 | { | |
548 | struct it87_data *data = it87_update_device(dev); | |
549 | int index = (data->fan_ctl >> 4) & 0x07; | |
550 | ||
551 | return sprintf(buf, "%u\n", pwm_freq[index]); | |
552 | } | |
20ad93d4 JD |
553 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
554 | const char *buf, size_t count) | |
1da177e4 | 555 | { |
20ad93d4 JD |
556 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
557 | int nr = sensor_attr->index; | |
558 | ||
b74f3fdd | 559 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 | 560 | int val = simple_strtol(buf, NULL, 10); |
7f999aa7 | 561 | u8 reg; |
1da177e4 | 562 | |
9a61bf63 | 563 | mutex_lock(&data->update_lock); |
b74f3fdd | 564 | reg = it87_read_value(data, IT87_REG_FAN_DIV); |
07eab46d JD |
565 | switch (nr) { |
566 | case 0: data->fan_div[nr] = reg & 0x07; break; | |
567 | case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break; | |
568 | case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break; | |
569 | } | |
570 | ||
1da177e4 | 571 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
c7f1f716 | 572 | it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); |
9a61bf63 | 573 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
574 | return count; |
575 | } | |
20ad93d4 JD |
576 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
577 | const char *buf, size_t count) | |
1da177e4 | 578 | { |
20ad93d4 JD |
579 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
580 | int nr = sensor_attr->index; | |
581 | ||
b74f3fdd | 582 | struct it87_data *data = dev_get_drvdata(dev); |
b9e349f7 | 583 | unsigned long val = simple_strtoul(buf, NULL, 10); |
8ab4ec3e | 584 | int min; |
1da177e4 LT |
585 | u8 old; |
586 | ||
9a61bf63 | 587 | mutex_lock(&data->update_lock); |
b74f3fdd | 588 | old = it87_read_value(data, IT87_REG_FAN_DIV); |
1da177e4 | 589 | |
8ab4ec3e JD |
590 | /* Save fan min limit */ |
591 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); | |
1da177e4 LT |
592 | |
593 | switch (nr) { | |
594 | case 0: | |
595 | case 1: | |
596 | data->fan_div[nr] = DIV_TO_REG(val); | |
597 | break; | |
598 | case 2: | |
599 | if (val < 8) | |
600 | data->fan_div[nr] = 1; | |
601 | else | |
602 | data->fan_div[nr] = 3; | |
603 | } | |
604 | val = old & 0x80; | |
605 | val |= (data->fan_div[0] & 0x07); | |
606 | val |= (data->fan_div[1] & 0x07) << 3; | |
607 | if (data->fan_div[2] == 3) | |
608 | val |= 0x1 << 6; | |
b74f3fdd | 609 | it87_write_value(data, IT87_REG_FAN_DIV, val); |
1da177e4 | 610 | |
8ab4ec3e JD |
611 | /* Restore fan min limit */ |
612 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
c7f1f716 | 613 | it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); |
8ab4ec3e | 614 | |
9a61bf63 | 615 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
616 | return count; |
617 | } | |
20ad93d4 JD |
618 | static ssize_t set_pwm_enable(struct device *dev, |
619 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 620 | { |
20ad93d4 JD |
621 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
622 | int nr = sensor_attr->index; | |
623 | ||
b74f3fdd | 624 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
625 | int val = simple_strtol(buf, NULL, 10); |
626 | ||
9a61bf63 | 627 | mutex_lock(&data->update_lock); |
1da177e4 LT |
628 | |
629 | if (val == 0) { | |
630 | int tmp; | |
631 | /* make sure the fan is on when in on/off mode */ | |
b74f3fdd | 632 | tmp = it87_read_value(data, IT87_REG_FAN_CTL); |
633 | it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr)); | |
1da177e4 LT |
634 | /* set on/off mode */ |
635 | data->fan_main_ctrl &= ~(1 << nr); | |
b74f3fdd | 636 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 LT |
637 | } else if (val == 1) { |
638 | /* set SmartGuardian mode */ | |
639 | data->fan_main_ctrl |= (1 << nr); | |
b74f3fdd | 640 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 | 641 | /* set saved pwm value, clear FAN_CTLX PWM mode bit */ |
b74f3fdd | 642 | it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); |
1da177e4 | 643 | } else { |
9a61bf63 | 644 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
645 | return -EINVAL; |
646 | } | |
647 | ||
9a61bf63 | 648 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
649 | return count; |
650 | } | |
20ad93d4 JD |
651 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
652 | const char *buf, size_t count) | |
1da177e4 | 653 | { |
20ad93d4 JD |
654 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
655 | int nr = sensor_attr->index; | |
656 | ||
b74f3fdd | 657 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
658 | int val = simple_strtol(buf, NULL, 10); |
659 | ||
660 | if (val < 0 || val > 255) | |
661 | return -EINVAL; | |
662 | ||
9a61bf63 | 663 | mutex_lock(&data->update_lock); |
1da177e4 LT |
664 | data->manual_pwm_ctl[nr] = val; |
665 | if (data->fan_main_ctrl & (1 << nr)) | |
b74f3fdd | 666 | it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); |
9a61bf63 | 667 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
668 | return count; |
669 | } | |
f8d0c19a JD |
670 | static ssize_t set_pwm_freq(struct device *dev, |
671 | struct device_attribute *attr, const char *buf, size_t count) | |
672 | { | |
b74f3fdd | 673 | struct it87_data *data = dev_get_drvdata(dev); |
f8d0c19a JD |
674 | unsigned long val = simple_strtoul(buf, NULL, 10); |
675 | int i; | |
676 | ||
677 | /* Search for the nearest available frequency */ | |
678 | for (i = 0; i < 7; i++) { | |
679 | if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2) | |
680 | break; | |
681 | } | |
682 | ||
683 | mutex_lock(&data->update_lock); | |
b74f3fdd | 684 | data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f; |
f8d0c19a | 685 | data->fan_ctl |= i << 4; |
b74f3fdd | 686 | it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl); |
f8d0c19a JD |
687 | mutex_unlock(&data->update_lock); |
688 | ||
689 | return count; | |
690 | } | |
1da177e4 | 691 | |
20ad93d4 JD |
692 | #define show_fan_offset(offset) \ |
693 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
694 | show_fan, NULL, offset - 1); \ | |
695 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
696 | show_fan_min, set_fan_min, offset - 1); \ | |
697 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
698 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
699 | |
700 | show_fan_offset(1); | |
701 | show_fan_offset(2); | |
702 | show_fan_offset(3); | |
703 | ||
704 | #define show_pwm_offset(offset) \ | |
20ad93d4 JD |
705 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
706 | show_pwm_enable, set_pwm_enable, offset - 1); \ | |
707 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ | |
f8d0c19a JD |
708 | show_pwm, set_pwm, offset - 1); \ |
709 | static DEVICE_ATTR(pwm##offset##_freq, \ | |
710 | (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \ | |
711 | show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); | |
1da177e4 LT |
712 | |
713 | show_pwm_offset(1); | |
714 | show_pwm_offset(2); | |
715 | show_pwm_offset(3); | |
716 | ||
17d648bf JD |
717 | /* A different set of callbacks for 16-bit fans */ |
718 | static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, | |
719 | char *buf) | |
720 | { | |
721 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
722 | int nr = sensor_attr->index; | |
723 | struct it87_data *data = it87_update_device(dev); | |
724 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); | |
725 | } | |
726 | ||
727 | static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, | |
728 | char *buf) | |
729 | { | |
730 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
731 | int nr = sensor_attr->index; | |
732 | struct it87_data *data = it87_update_device(dev); | |
733 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); | |
734 | } | |
735 | ||
736 | static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, | |
737 | const char *buf, size_t count) | |
738 | { | |
739 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
740 | int nr = sensor_attr->index; | |
b74f3fdd | 741 | struct it87_data *data = dev_get_drvdata(dev); |
17d648bf JD |
742 | int val = simple_strtol(buf, NULL, 10); |
743 | ||
744 | mutex_lock(&data->update_lock); | |
745 | data->fan_min[nr] = FAN16_TO_REG(val); | |
c7f1f716 | 746 | it87_write_value(data, IT87_REG_FAN_MIN[nr], |
17d648bf | 747 | data->fan_min[nr] & 0xff); |
c7f1f716 | 748 | it87_write_value(data, IT87_REG_FANX_MIN[nr], |
17d648bf JD |
749 | data->fan_min[nr] >> 8); |
750 | mutex_unlock(&data->update_lock); | |
751 | return count; | |
752 | } | |
753 | ||
754 | /* We want to use the same sysfs file names as 8-bit fans, but we need | |
755 | different variable names, so we have to use SENSOR_ATTR instead of | |
756 | SENSOR_DEVICE_ATTR. */ | |
757 | #define show_fan16_offset(offset) \ | |
758 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ | |
759 | = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ | |
760 | show_fan16, NULL, offset - 1); \ | |
761 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ | |
762 | = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
763 | show_fan16_min, set_fan16_min, offset - 1) | |
764 | ||
765 | show_fan16_offset(1); | |
766 | show_fan16_offset(2); | |
767 | show_fan16_offset(3); | |
c7f1f716 JD |
768 | show_fan16_offset(4); |
769 | show_fan16_offset(5); | |
17d648bf | 770 | |
1da177e4 | 771 | /* Alarms */ |
30f74292 | 772 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
773 | { |
774 | struct it87_data *data = it87_update_device(dev); | |
68188ba7 | 775 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 | 776 | } |
1d66c64c | 777 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4 LT |
778 | |
779 | static ssize_t | |
30f74292 | 780 | show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 781 | { |
90d6619a | 782 | struct it87_data *data = dev_get_drvdata(dev); |
a7be58a1 | 783 | return sprintf(buf, "%u\n", data->vrm); |
1da177e4 LT |
784 | } |
785 | static ssize_t | |
30f74292 | 786 | store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 | 787 | { |
b74f3fdd | 788 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
789 | u32 val; |
790 | ||
791 | val = simple_strtoul(buf, NULL, 10); | |
792 | data->vrm = val; | |
793 | ||
794 | return count; | |
795 | } | |
796 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
1da177e4 LT |
797 | |
798 | static ssize_t | |
30f74292 | 799 | show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
800 | { |
801 | struct it87_data *data = it87_update_device(dev); | |
802 | return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); | |
803 | } | |
804 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
87808be4 | 805 | |
b74f3fdd | 806 | static ssize_t show_name(struct device *dev, struct device_attribute |
807 | *devattr, char *buf) | |
808 | { | |
809 | struct it87_data *data = dev_get_drvdata(dev); | |
810 | return sprintf(buf, "%s\n", data->name); | |
811 | } | |
812 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
813 | ||
87808be4 JD |
814 | static struct attribute *it87_attributes[] = { |
815 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
816 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
817 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
818 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
819 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
820 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
821 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
822 | &sensor_dev_attr_in7_input.dev_attr.attr, | |
823 | &sensor_dev_attr_in8_input.dev_attr.attr, | |
824 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
825 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
826 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
827 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
828 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
829 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
830 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
831 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
832 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
833 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
834 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
835 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
836 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
837 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
838 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
839 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
840 | ||
841 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
842 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
843 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
844 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
845 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
846 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
847 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
848 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
849 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
850 | &sensor_dev_attr_temp1_type.dev_attr.attr, | |
851 | &sensor_dev_attr_temp2_type.dev_attr.attr, | |
852 | &sensor_dev_attr_temp3_type.dev_attr.attr, | |
853 | ||
854 | &dev_attr_alarms.attr, | |
b74f3fdd | 855 | &dev_attr_name.attr, |
87808be4 JD |
856 | NULL |
857 | }; | |
858 | ||
859 | static const struct attribute_group it87_group = { | |
860 | .attrs = it87_attributes, | |
861 | }; | |
862 | ||
863 | static struct attribute *it87_attributes_opt[] = { | |
864 | &sensor_dev_attr_fan1_input16.dev_attr.attr, | |
865 | &sensor_dev_attr_fan1_min16.dev_attr.attr, | |
866 | &sensor_dev_attr_fan2_input16.dev_attr.attr, | |
867 | &sensor_dev_attr_fan2_min16.dev_attr.attr, | |
868 | &sensor_dev_attr_fan3_input16.dev_attr.attr, | |
869 | &sensor_dev_attr_fan3_min16.dev_attr.attr, | |
c7f1f716 JD |
870 | &sensor_dev_attr_fan4_input16.dev_attr.attr, |
871 | &sensor_dev_attr_fan4_min16.dev_attr.attr, | |
872 | &sensor_dev_attr_fan5_input16.dev_attr.attr, | |
873 | &sensor_dev_attr_fan5_min16.dev_attr.attr, | |
87808be4 JD |
874 | |
875 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
876 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
877 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
878 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
879 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
880 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
881 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
882 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
883 | &sensor_dev_attr_fan3_div.dev_attr.attr, | |
884 | ||
885 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
886 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
887 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
888 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
889 | &sensor_dev_attr_pwm2.dev_attr.attr, | |
890 | &sensor_dev_attr_pwm3.dev_attr.attr, | |
891 | ||
892 | &dev_attr_vrm.attr, | |
893 | &dev_attr_cpu0_vid.attr, | |
894 | NULL | |
895 | }; | |
896 | ||
897 | static const struct attribute_group it87_group_opt = { | |
898 | .attrs = it87_attributes_opt, | |
899 | }; | |
1da177e4 | 900 | |
2d8672c5 | 901 | /* SuperIO detection - will change isa_address if a chip is found */ |
b74f3fdd | 902 | static int __init it87_find(unsigned short *address, |
903 | struct it87_sio_data *sio_data) | |
1da177e4 LT |
904 | { |
905 | int err = -ENODEV; | |
b74f3fdd | 906 | u16 chip_type; |
1da177e4 LT |
907 | |
908 | superio_enter(); | |
909 | chip_type = superio_inw(DEVID); | |
b74f3fdd | 910 | |
911 | switch (chip_type) { | |
912 | case IT8705F_DEVID: | |
913 | sio_data->type = it87; | |
914 | break; | |
915 | case IT8712F_DEVID: | |
916 | sio_data->type = it8712; | |
917 | break; | |
918 | case IT8716F_DEVID: | |
919 | case IT8726F_DEVID: | |
920 | sio_data->type = it8716; | |
921 | break; | |
922 | case IT8718F_DEVID: | |
923 | sio_data->type = it8718; | |
924 | break; | |
925 | case 0xffff: /* No device at all */ | |
926 | goto exit; | |
927 | default: | |
928 | pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n", | |
929 | chip_type); | |
930 | goto exit; | |
931 | } | |
1da177e4 | 932 | |
87673dd7 | 933 | superio_select(PME); |
1da177e4 LT |
934 | if (!(superio_inb(IT87_ACT_REG) & 0x01)) { |
935 | pr_info("it87: Device not activated, skipping\n"); | |
936 | goto exit; | |
937 | } | |
938 | ||
939 | *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); | |
940 | if (*address == 0) { | |
941 | pr_info("it87: Base address not set, skipping\n"); | |
942 | goto exit; | |
943 | } | |
944 | ||
945 | err = 0; | |
946 | pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", | |
947 | chip_type, *address, superio_inb(DEVREV) & 0x0f); | |
948 | ||
87673dd7 JD |
949 | /* Read GPIO config and VID value from LDN 7 (GPIO) */ |
950 | if (chip_type != IT8705F_DEVID) { | |
951 | int reg; | |
952 | ||
953 | superio_select(GPIO); | |
954 | if (chip_type == it8718) | |
b74f3fdd | 955 | sio_data->vid_value = superio_inb(IT87_SIO_VID_REG); |
87673dd7 JD |
956 | |
957 | reg = superio_inb(IT87_SIO_PINX2_REG); | |
958 | if (reg & (1 << 0)) | |
959 | pr_info("it87: in3 is VCC (+5V)\n"); | |
960 | if (reg & (1 << 1)) | |
961 | pr_info("it87: in7 is VCCH (+5V Stand-By)\n"); | |
962 | } | |
963 | ||
1da177e4 LT |
964 | exit: |
965 | superio_exit(); | |
966 | return err; | |
967 | } | |
968 | ||
b74f3fdd | 969 | static int __devinit it87_probe(struct platform_device *pdev) |
1da177e4 | 970 | { |
1da177e4 | 971 | struct it87_data *data; |
b74f3fdd | 972 | struct resource *res; |
973 | struct device *dev = &pdev->dev; | |
974 | struct it87_sio_data *sio_data = dev->platform_data; | |
1da177e4 | 975 | int err = 0; |
1da177e4 | 976 | int enable_pwm_interface; |
b74f3fdd | 977 | static const char *names[] = { |
978 | "it87", | |
979 | "it8712", | |
980 | "it8716", | |
981 | "it8718", | |
982 | }; | |
983 | ||
984 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); | |
87b4b663 | 985 | if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) { |
b74f3fdd | 986 | dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", |
987 | (unsigned long)res->start, | |
87b4b663 | 988 | (unsigned long)(res->start + IT87_EC_EXTENT - 1)); |
8e9afcbb JD |
989 | err = -EBUSY; |
990 | goto ERROR0; | |
991 | } | |
1da177e4 | 992 | |
ba9c2e8d | 993 | if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { |
1da177e4 LT |
994 | err = -ENOMEM; |
995 | goto ERROR1; | |
996 | } | |
1da177e4 | 997 | |
b74f3fdd | 998 | data->addr = res->start; |
999 | data->type = sio_data->type; | |
1000 | data->name = names[sio_data->type]; | |
1da177e4 LT |
1001 | |
1002 | /* Now, we do the remaining detection. */ | |
b74f3fdd | 1003 | if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) |
1004 | || it87_read_value(data, IT87_REG_CHIPID) != 0x90) { | |
8e9afcbb JD |
1005 | err = -ENODEV; |
1006 | goto ERROR2; | |
1da177e4 LT |
1007 | } |
1008 | ||
b74f3fdd | 1009 | platform_set_drvdata(pdev, data); |
1da177e4 | 1010 | |
9a61bf63 | 1011 | mutex_init(&data->update_lock); |
1da177e4 | 1012 | |
1da177e4 | 1013 | /* Check PWM configuration */ |
b74f3fdd | 1014 | enable_pwm_interface = it87_check_pwm(dev); |
1da177e4 LT |
1015 | |
1016 | /* Initialize the IT87 chip */ | |
b74f3fdd | 1017 | it87_init_device(pdev); |
1da177e4 LT |
1018 | |
1019 | /* Register sysfs hooks */ | |
b74f3fdd | 1020 | if ((err = sysfs_create_group(&dev->kobj, &it87_group))) |
1021 | goto ERROR2; | |
17d648bf | 1022 | |
9060f8bd | 1023 | /* Do not create fan files for disabled fans */ |
87673dd7 JD |
1024 | if (data->type == it8716 || data->type == it8718) { |
1025 | /* 16-bit tachometers */ | |
9060f8bd | 1026 | if (data->has_fan & (1 << 0)) { |
b74f3fdd | 1027 | if ((err = device_create_file(dev, |
87808be4 | 1028 | &sensor_dev_attr_fan1_input16.dev_attr)) |
b74f3fdd | 1029 | || (err = device_create_file(dev, |
87808be4 JD |
1030 | &sensor_dev_attr_fan1_min16.dev_attr))) |
1031 | goto ERROR4; | |
9060f8bd JD |
1032 | } |
1033 | if (data->has_fan & (1 << 1)) { | |
b74f3fdd | 1034 | if ((err = device_create_file(dev, |
87808be4 | 1035 | &sensor_dev_attr_fan2_input16.dev_attr)) |
b74f3fdd | 1036 | || (err = device_create_file(dev, |
87808be4 JD |
1037 | &sensor_dev_attr_fan2_min16.dev_attr))) |
1038 | goto ERROR4; | |
9060f8bd JD |
1039 | } |
1040 | if (data->has_fan & (1 << 2)) { | |
b74f3fdd | 1041 | if ((err = device_create_file(dev, |
87808be4 | 1042 | &sensor_dev_attr_fan3_input16.dev_attr)) |
b74f3fdd | 1043 | || (err = device_create_file(dev, |
87808be4 JD |
1044 | &sensor_dev_attr_fan3_min16.dev_attr))) |
1045 | goto ERROR4; | |
9060f8bd | 1046 | } |
c7f1f716 JD |
1047 | if (data->has_fan & (1 << 3)) { |
1048 | if ((err = device_create_file(dev, | |
1049 | &sensor_dev_attr_fan4_input16.dev_attr)) | |
1050 | || (err = device_create_file(dev, | |
1051 | &sensor_dev_attr_fan4_min16.dev_attr))) | |
1052 | goto ERROR4; | |
1053 | } | |
1054 | if (data->has_fan & (1 << 4)) { | |
1055 | if ((err = device_create_file(dev, | |
1056 | &sensor_dev_attr_fan5_input16.dev_attr)) | |
1057 | || (err = device_create_file(dev, | |
1058 | &sensor_dev_attr_fan5_min16.dev_attr))) | |
1059 | goto ERROR4; | |
1060 | } | |
17d648bf | 1061 | } else { |
87673dd7 | 1062 | /* 8-bit tachometers with clock divider */ |
9060f8bd | 1063 | if (data->has_fan & (1 << 0)) { |
b74f3fdd | 1064 | if ((err = device_create_file(dev, |
87808be4 | 1065 | &sensor_dev_attr_fan1_input.dev_attr)) |
b74f3fdd | 1066 | || (err = device_create_file(dev, |
87808be4 | 1067 | &sensor_dev_attr_fan1_min.dev_attr)) |
b74f3fdd | 1068 | || (err = device_create_file(dev, |
87808be4 JD |
1069 | &sensor_dev_attr_fan1_div.dev_attr))) |
1070 | goto ERROR4; | |
9060f8bd JD |
1071 | } |
1072 | if (data->has_fan & (1 << 1)) { | |
b74f3fdd | 1073 | if ((err = device_create_file(dev, |
87808be4 | 1074 | &sensor_dev_attr_fan2_input.dev_attr)) |
b74f3fdd | 1075 | || (err = device_create_file(dev, |
87808be4 | 1076 | &sensor_dev_attr_fan2_min.dev_attr)) |
b74f3fdd | 1077 | || (err = device_create_file(dev, |
87808be4 JD |
1078 | &sensor_dev_attr_fan2_div.dev_attr))) |
1079 | goto ERROR4; | |
9060f8bd JD |
1080 | } |
1081 | if (data->has_fan & (1 << 2)) { | |
b74f3fdd | 1082 | if ((err = device_create_file(dev, |
87808be4 | 1083 | &sensor_dev_attr_fan3_input.dev_attr)) |
b74f3fdd | 1084 | || (err = device_create_file(dev, |
87808be4 | 1085 | &sensor_dev_attr_fan3_min.dev_attr)) |
b74f3fdd | 1086 | || (err = device_create_file(dev, |
87808be4 JD |
1087 | &sensor_dev_attr_fan3_div.dev_attr))) |
1088 | goto ERROR4; | |
9060f8bd | 1089 | } |
17d648bf JD |
1090 | } |
1091 | ||
1da177e4 | 1092 | if (enable_pwm_interface) { |
b74f3fdd | 1093 | if ((err = device_create_file(dev, |
87808be4 | 1094 | &sensor_dev_attr_pwm1_enable.dev_attr)) |
b74f3fdd | 1095 | || (err = device_create_file(dev, |
87808be4 | 1096 | &sensor_dev_attr_pwm2_enable.dev_attr)) |
b74f3fdd | 1097 | || (err = device_create_file(dev, |
87808be4 | 1098 | &sensor_dev_attr_pwm3_enable.dev_attr)) |
b74f3fdd | 1099 | || (err = device_create_file(dev, |
87808be4 | 1100 | &sensor_dev_attr_pwm1.dev_attr)) |
b74f3fdd | 1101 | || (err = device_create_file(dev, |
87808be4 | 1102 | &sensor_dev_attr_pwm2.dev_attr)) |
b74f3fdd | 1103 | || (err = device_create_file(dev, |
f8d0c19a | 1104 | &sensor_dev_attr_pwm3.dev_attr)) |
b74f3fdd | 1105 | || (err = device_create_file(dev, |
f8d0c19a | 1106 | &dev_attr_pwm1_freq)) |
b74f3fdd | 1107 | || (err = device_create_file(dev, |
f8d0c19a | 1108 | &dev_attr_pwm2_freq)) |
b74f3fdd | 1109 | || (err = device_create_file(dev, |
f8d0c19a | 1110 | &dev_attr_pwm3_freq))) |
87808be4 | 1111 | goto ERROR4; |
1da177e4 LT |
1112 | } |
1113 | ||
87673dd7 JD |
1114 | if (data->type == it8712 || data->type == it8716 |
1115 | || data->type == it8718) { | |
303760b4 | 1116 | data->vrm = vid_which_vrm(); |
87673dd7 | 1117 | /* VID reading from Super-I/O config space if available */ |
b74f3fdd | 1118 | data->vid = sio_data->vid_value; |
1119 | if ((err = device_create_file(dev, | |
87808be4 | 1120 | &dev_attr_vrm)) |
b74f3fdd | 1121 | || (err = device_create_file(dev, |
87808be4 JD |
1122 | &dev_attr_cpu0_vid))) |
1123 | goto ERROR4; | |
1124 | } | |
1125 | ||
1beeffe4 TJ |
1126 | data->hwmon_dev = hwmon_device_register(dev); |
1127 | if (IS_ERR(data->hwmon_dev)) { | |
1128 | err = PTR_ERR(data->hwmon_dev); | |
87808be4 | 1129 | goto ERROR4; |
1da177e4 LT |
1130 | } |
1131 | ||
1132 | return 0; | |
1133 | ||
87808be4 | 1134 | ERROR4: |
b74f3fdd | 1135 | sysfs_remove_group(&dev->kobj, &it87_group); |
1136 | sysfs_remove_group(&dev->kobj, &it87_group_opt); | |
1da177e4 | 1137 | ERROR2: |
b74f3fdd | 1138 | platform_set_drvdata(pdev, NULL); |
1da177e4 LT |
1139 | kfree(data); |
1140 | ERROR1: | |
87b4b663 | 1141 | release_region(res->start, IT87_EC_EXTENT); |
1da177e4 LT |
1142 | ERROR0: |
1143 | return err; | |
1144 | } | |
1145 | ||
b74f3fdd | 1146 | static int __devexit it87_remove(struct platform_device *pdev) |
1da177e4 | 1147 | { |
b74f3fdd | 1148 | struct it87_data *data = platform_get_drvdata(pdev); |
1da177e4 | 1149 | |
1beeffe4 | 1150 | hwmon_device_unregister(data->hwmon_dev); |
b74f3fdd | 1151 | sysfs_remove_group(&pdev->dev.kobj, &it87_group); |
1152 | sysfs_remove_group(&pdev->dev.kobj, &it87_group_opt); | |
943b0830 | 1153 | |
87b4b663 | 1154 | release_region(data->addr, IT87_EC_EXTENT); |
b74f3fdd | 1155 | platform_set_drvdata(pdev, NULL); |
943b0830 | 1156 | kfree(data); |
1da177e4 LT |
1157 | |
1158 | return 0; | |
1159 | } | |
1160 | ||
7f999aa7 | 1161 | /* Must be called with data->update_lock held, except during initialization. |
1da177e4 LT |
1162 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1163 | would slow down the IT87 access and should not be necessary. */ | |
b74f3fdd | 1164 | static int it87_read_value(struct it87_data *data, u8 reg) |
1da177e4 | 1165 | { |
b74f3fdd | 1166 | outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); |
1167 | return inb_p(data->addr + IT87_DATA_REG_OFFSET); | |
1da177e4 LT |
1168 | } |
1169 | ||
7f999aa7 | 1170 | /* Must be called with data->update_lock held, except during initialization. |
1da177e4 LT |
1171 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1172 | would slow down the IT87 access and should not be necessary. */ | |
b74f3fdd | 1173 | static void it87_write_value(struct it87_data *data, u8 reg, u8 value) |
1da177e4 | 1174 | { |
b74f3fdd | 1175 | outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); |
1176 | outb_p(value, data->addr + IT87_DATA_REG_OFFSET); | |
1da177e4 LT |
1177 | } |
1178 | ||
1179 | /* Return 1 if and only if the PWM interface is safe to use */ | |
b74f3fdd | 1180 | static int __devinit it87_check_pwm(struct device *dev) |
1da177e4 | 1181 | { |
b74f3fdd | 1182 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
1183 | /* Some BIOSes fail to correctly configure the IT87 fans. All fans off |
1184 | * and polarity set to active low is sign that this is the case so we | |
1185 | * disable pwm control to protect the user. */ | |
b74f3fdd | 1186 | int tmp = it87_read_value(data, IT87_REG_FAN_CTL); |
1da177e4 LT |
1187 | if ((tmp & 0x87) == 0) { |
1188 | if (fix_pwm_polarity) { | |
1189 | /* The user asks us to attempt a chip reconfiguration. | |
1190 | * This means switching to active high polarity and | |
1191 | * inverting all fan speed values. */ | |
1192 | int i; | |
1193 | u8 pwm[3]; | |
1194 | ||
1195 | for (i = 0; i < 3; i++) | |
b74f3fdd | 1196 | pwm[i] = it87_read_value(data, |
1da177e4 LT |
1197 | IT87_REG_PWM(i)); |
1198 | ||
1199 | /* If any fan is in automatic pwm mode, the polarity | |
1200 | * might be correct, as suspicious as it seems, so we | |
1201 | * better don't change anything (but still disable the | |
1202 | * PWM interface). */ | |
1203 | if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { | |
b74f3fdd | 1204 | dev_info(dev, "Reconfiguring PWM to " |
1da177e4 | 1205 | "active high polarity\n"); |
b74f3fdd | 1206 | it87_write_value(data, IT87_REG_FAN_CTL, |
1da177e4 LT |
1207 | tmp | 0x87); |
1208 | for (i = 0; i < 3; i++) | |
b74f3fdd | 1209 | it87_write_value(data, |
1da177e4 LT |
1210 | IT87_REG_PWM(i), |
1211 | 0x7f & ~pwm[i]); | |
1212 | return 1; | |
1213 | } | |
1214 | ||
b74f3fdd | 1215 | dev_info(dev, "PWM configuration is " |
1da177e4 LT |
1216 | "too broken to be fixed\n"); |
1217 | } | |
1218 | ||
b74f3fdd | 1219 | dev_info(dev, "Detected broken BIOS " |
1da177e4 LT |
1220 | "defaults, disabling PWM interface\n"); |
1221 | return 0; | |
1222 | } else if (fix_pwm_polarity) { | |
b74f3fdd | 1223 | dev_info(dev, "PWM configuration looks " |
1da177e4 LT |
1224 | "sane, won't touch\n"); |
1225 | } | |
1226 | ||
1227 | return 1; | |
1228 | } | |
1229 | ||
1230 | /* Called when we have found a new IT87. */ | |
b74f3fdd | 1231 | static void __devinit it87_init_device(struct platform_device *pdev) |
1da177e4 | 1232 | { |
b74f3fdd | 1233 | struct it87_data *data = platform_get_drvdata(pdev); |
1da177e4 LT |
1234 | int tmp, i; |
1235 | ||
1236 | /* initialize to sane defaults: | |
1237 | * - if the chip is in manual pwm mode, this will be overwritten with | |
1238 | * the actual settings on the chip (so in this case, initialization | |
1239 | * is not needed) | |
1240 | * - if in automatic or on/off mode, we could switch to manual mode, | |
1241 | * read the registers and set manual_pwm_ctl accordingly, but currently | |
1242 | * this is not implemented, so we initialize to something sane */ | |
1243 | for (i = 0; i < 3; i++) { | |
1244 | data->manual_pwm_ctl[i] = 0xff; | |
1245 | } | |
1246 | ||
c5df9b7a JD |
1247 | /* Some chips seem to have default value 0xff for all limit |
1248 | * registers. For low voltage limits it makes no sense and triggers | |
1249 | * alarms, so change to 0 instead. For high temperature limits, it | |
1250 | * means -1 degree C, which surprisingly doesn't trigger an alarm, | |
1251 | * but is still confusing, so change to 127 degrees C. */ | |
1252 | for (i = 0; i < 8; i++) { | |
b74f3fdd | 1253 | tmp = it87_read_value(data, IT87_REG_VIN_MIN(i)); |
c5df9b7a | 1254 | if (tmp == 0xff) |
b74f3fdd | 1255 | it87_write_value(data, IT87_REG_VIN_MIN(i), 0); |
c5df9b7a JD |
1256 | } |
1257 | for (i = 0; i < 3; i++) { | |
b74f3fdd | 1258 | tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i)); |
c5df9b7a | 1259 | if (tmp == 0xff) |
b74f3fdd | 1260 | it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127); |
c5df9b7a JD |
1261 | } |
1262 | ||
1da177e4 | 1263 | /* Check if temperature channnels are reset manually or by some reason */ |
b74f3fdd | 1264 | tmp = it87_read_value(data, IT87_REG_TEMP_ENABLE); |
1da177e4 LT |
1265 | if ((tmp & 0x3f) == 0) { |
1266 | /* Temp1,Temp3=thermistor; Temp2=thermal diode */ | |
1267 | tmp = (tmp & 0xc0) | 0x2a; | |
b74f3fdd | 1268 | it87_write_value(data, IT87_REG_TEMP_ENABLE, tmp); |
1da177e4 LT |
1269 | } |
1270 | data->sensor = tmp; | |
1271 | ||
1272 | /* Check if voltage monitors are reset manually or by some reason */ | |
b74f3fdd | 1273 | tmp = it87_read_value(data, IT87_REG_VIN_ENABLE); |
1da177e4 LT |
1274 | if ((tmp & 0xff) == 0) { |
1275 | /* Enable all voltage monitors */ | |
b74f3fdd | 1276 | it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff); |
1da177e4 LT |
1277 | } |
1278 | ||
1279 | /* Check if tachometers are reset manually or by some reason */ | |
b74f3fdd | 1280 | data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL); |
1da177e4 LT |
1281 | if ((data->fan_main_ctrl & 0x70) == 0) { |
1282 | /* Enable all fan tachometers */ | |
1283 | data->fan_main_ctrl |= 0x70; | |
b74f3fdd | 1284 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 | 1285 | } |
9060f8bd | 1286 | data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; |
1da177e4 | 1287 | |
17d648bf | 1288 | /* Set tachometers to 16-bit mode if needed */ |
87673dd7 | 1289 | if (data->type == it8716 || data->type == it8718) { |
b74f3fdd | 1290 | tmp = it87_read_value(data, IT87_REG_FAN_16BIT); |
9060f8bd | 1291 | if (~tmp & 0x07 & data->has_fan) { |
b74f3fdd | 1292 | dev_dbg(&pdev->dev, |
17d648bf | 1293 | "Setting fan1-3 to 16-bit mode\n"); |
b74f3fdd | 1294 | it87_write_value(data, IT87_REG_FAN_16BIT, |
17d648bf JD |
1295 | tmp | 0x07); |
1296 | } | |
c7f1f716 JD |
1297 | if (tmp & (1 << 4)) |
1298 | data->has_fan |= (1 << 3); /* fan4 enabled */ | |
1299 | if (tmp & (1 << 5)) | |
1300 | data->has_fan |= (1 << 4); /* fan5 enabled */ | |
17d648bf JD |
1301 | } |
1302 | ||
1da177e4 LT |
1303 | /* Set current fan mode registers and the default settings for the |
1304 | * other mode registers */ | |
1305 | for (i = 0; i < 3; i++) { | |
1306 | if (data->fan_main_ctrl & (1 << i)) { | |
1307 | /* pwm mode */ | |
b74f3fdd | 1308 | tmp = it87_read_value(data, IT87_REG_PWM(i)); |
1da177e4 LT |
1309 | if (tmp & 0x80) { |
1310 | /* automatic pwm - not yet implemented, but | |
1311 | * leave the settings made by the BIOS alone | |
1312 | * until a change is requested via the sysfs | |
1313 | * interface */ | |
1314 | } else { | |
1315 | /* manual pwm */ | |
1316 | data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp); | |
1317 | } | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | /* Start monitoring */ | |
b74f3fdd | 1322 | it87_write_value(data, IT87_REG_CONFIG, |
1323 | (it87_read_value(data, IT87_REG_CONFIG) & 0x36) | |
1da177e4 LT |
1324 | | (update_vbat ? 0x41 : 0x01)); |
1325 | } | |
1326 | ||
1327 | static struct it87_data *it87_update_device(struct device *dev) | |
1328 | { | |
b74f3fdd | 1329 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
1330 | int i; |
1331 | ||
9a61bf63 | 1332 | mutex_lock(&data->update_lock); |
1da177e4 LT |
1333 | |
1334 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
1335 | || !data->valid) { | |
1336 | ||
1337 | if (update_vbat) { | |
1338 | /* Cleared after each update, so reenable. Value | |
1339 | returned by this read will be previous value */ | |
b74f3fdd | 1340 | it87_write_value(data, IT87_REG_CONFIG, |
1341 | it87_read_value(data, IT87_REG_CONFIG) | 0x40); | |
1da177e4 LT |
1342 | } |
1343 | for (i = 0; i <= 7; i++) { | |
1344 | data->in[i] = | |
b74f3fdd | 1345 | it87_read_value(data, IT87_REG_VIN(i)); |
1da177e4 | 1346 | data->in_min[i] = |
b74f3fdd | 1347 | it87_read_value(data, IT87_REG_VIN_MIN(i)); |
1da177e4 | 1348 | data->in_max[i] = |
b74f3fdd | 1349 | it87_read_value(data, IT87_REG_VIN_MAX(i)); |
1da177e4 | 1350 | } |
3543a53f | 1351 | /* in8 (battery) has no limit registers */ |
1da177e4 | 1352 | data->in[8] = |
b74f3fdd | 1353 | it87_read_value(data, IT87_REG_VIN(8)); |
1da177e4 | 1354 | |
c7f1f716 | 1355 | for (i = 0; i < 5; i++) { |
9060f8bd JD |
1356 | /* Skip disabled fans */ |
1357 | if (!(data->has_fan & (1 << i))) | |
1358 | continue; | |
1359 | ||
1da177e4 | 1360 | data->fan_min[i] = |
c7f1f716 | 1361 | it87_read_value(data, IT87_REG_FAN_MIN[i]); |
b74f3fdd | 1362 | data->fan[i] = it87_read_value(data, |
c7f1f716 | 1363 | IT87_REG_FAN[i]); |
17d648bf | 1364 | /* Add high byte if in 16-bit mode */ |
87673dd7 | 1365 | if (data->type == it8716 || data->type == it8718) { |
b74f3fdd | 1366 | data->fan[i] |= it87_read_value(data, |
c7f1f716 | 1367 | IT87_REG_FANX[i]) << 8; |
b74f3fdd | 1368 | data->fan_min[i] |= it87_read_value(data, |
c7f1f716 | 1369 | IT87_REG_FANX_MIN[i]) << 8; |
17d648bf | 1370 | } |
1da177e4 LT |
1371 | } |
1372 | for (i = 0; i < 3; i++) { | |
1373 | data->temp[i] = | |
b74f3fdd | 1374 | it87_read_value(data, IT87_REG_TEMP(i)); |
1da177e4 | 1375 | data->temp_high[i] = |
b74f3fdd | 1376 | it87_read_value(data, IT87_REG_TEMP_HIGH(i)); |
1da177e4 | 1377 | data->temp_low[i] = |
b74f3fdd | 1378 | it87_read_value(data, IT87_REG_TEMP_LOW(i)); |
1da177e4 LT |
1379 | } |
1380 | ||
17d648bf | 1381 | /* Newer chips don't have clock dividers */ |
87673dd7 JD |
1382 | if ((data->has_fan & 0x07) && data->type != it8716 |
1383 | && data->type != it8718) { | |
b74f3fdd | 1384 | i = it87_read_value(data, IT87_REG_FAN_DIV); |
17d648bf JD |
1385 | data->fan_div[0] = i & 0x07; |
1386 | data->fan_div[1] = (i >> 3) & 0x07; | |
1387 | data->fan_div[2] = (i & 0x40) ? 3 : 1; | |
1388 | } | |
1da177e4 LT |
1389 | |
1390 | data->alarms = | |
b74f3fdd | 1391 | it87_read_value(data, IT87_REG_ALARM1) | |
1392 | (it87_read_value(data, IT87_REG_ALARM2) << 8) | | |
1393 | (it87_read_value(data, IT87_REG_ALARM3) << 16); | |
1394 | data->fan_main_ctrl = it87_read_value(data, | |
1395 | IT87_REG_FAN_MAIN_CTRL); | |
1396 | data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL); | |
1397 | ||
1398 | data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE); | |
1da177e4 | 1399 | /* The 8705 does not have VID capability */ |
17d648bf | 1400 | if (data->type == it8712 || data->type == it8716) { |
b74f3fdd | 1401 | data->vid = it87_read_value(data, IT87_REG_VID); |
17d648bf JD |
1402 | /* The older IT8712F revisions had only 5 VID pins, |
1403 | but we assume it is always safe to read 6 bits. */ | |
1404 | data->vid &= 0x3f; | |
1da177e4 LT |
1405 | } |
1406 | data->last_updated = jiffies; | |
1407 | data->valid = 1; | |
1408 | } | |
1409 | ||
9a61bf63 | 1410 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1411 | |
1412 | return data; | |
1413 | } | |
1414 | ||
b74f3fdd | 1415 | static int __init it87_device_add(unsigned short address, |
1416 | const struct it87_sio_data *sio_data) | |
1417 | { | |
1418 | struct resource res = { | |
87b4b663 BH |
1419 | .start = address + IT87_EC_OFFSET, |
1420 | .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1, | |
b74f3fdd | 1421 | .name = DRVNAME, |
1422 | .flags = IORESOURCE_IO, | |
1423 | }; | |
1424 | int err; | |
1425 | ||
1426 | pdev = platform_device_alloc(DRVNAME, address); | |
1427 | if (!pdev) { | |
1428 | err = -ENOMEM; | |
1429 | printk(KERN_ERR DRVNAME ": Device allocation failed\n"); | |
1430 | goto exit; | |
1431 | } | |
1432 | ||
1433 | err = platform_device_add_resources(pdev, &res, 1); | |
1434 | if (err) { | |
1435 | printk(KERN_ERR DRVNAME ": Device resource addition failed " | |
1436 | "(%d)\n", err); | |
1437 | goto exit_device_put; | |
1438 | } | |
1439 | ||
1440 | err = platform_device_add_data(pdev, sio_data, | |
1441 | sizeof(struct it87_sio_data)); | |
1442 | if (err) { | |
1443 | printk(KERN_ERR DRVNAME ": Platform data allocation failed\n"); | |
1444 | goto exit_device_put; | |
1445 | } | |
1446 | ||
1447 | err = platform_device_add(pdev); | |
1448 | if (err) { | |
1449 | printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", | |
1450 | err); | |
1451 | goto exit_device_put; | |
1452 | } | |
1453 | ||
1454 | return 0; | |
1455 | ||
1456 | exit_device_put: | |
1457 | platform_device_put(pdev); | |
1458 | exit: | |
1459 | return err; | |
1460 | } | |
1461 | ||
1da177e4 LT |
1462 | static int __init sm_it87_init(void) |
1463 | { | |
b74f3fdd | 1464 | int err; |
1465 | unsigned short isa_address=0; | |
1466 | struct it87_sio_data sio_data; | |
1467 | ||
1468 | err = it87_find(&isa_address, &sio_data); | |
1469 | if (err) | |
1470 | return err; | |
1471 | err = platform_driver_register(&it87_driver); | |
1472 | if (err) | |
1473 | return err; | |
fde09509 | 1474 | |
b74f3fdd | 1475 | err = it87_device_add(isa_address, &sio_data); |
1476 | if (err){ | |
1477 | platform_driver_unregister(&it87_driver); | |
1478 | return err; | |
1479 | } | |
1480 | ||
1481 | return 0; | |
1da177e4 LT |
1482 | } |
1483 | ||
1484 | static void __exit sm_it87_exit(void) | |
1485 | { | |
b74f3fdd | 1486 | platform_device_unregister(pdev); |
1487 | platform_driver_unregister(&it87_driver); | |
1da177e4 LT |
1488 | } |
1489 | ||
1490 | ||
b19367c6 JD |
1491 | MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>, " |
1492 | "Jean Delvare <khali@linux-fr.org>"); | |
08a8f6e9 | 1493 | MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8726F, SiS950 driver"); |
1da177e4 LT |
1494 | module_param(update_vbat, bool, 0); |
1495 | MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); | |
1496 | module_param(fix_pwm_polarity, bool, 0); | |
1497 | MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)"); | |
1498 | MODULE_LICENSE("GPL"); | |
1499 | ||
1500 | module_init(sm_it87_init); | |
1501 | module_exit(sm_it87_exit); |