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 |
8e9afcbb | 6 | IT8712F Super I/O chip w/LPC interface |
17d648bf | 7 | IT8716F Super I/O chip w/LPC interface |
87673dd7 | 8 | IT8718F Super I/O chip w/LPC interface |
08a8f6e9 | 9 | IT8726F Super I/O chip w/LPC interface |
1da177e4 LT |
10 | Sis950 A clone of the IT8705F |
11 | ||
12 | Copyright (C) 2001 Chris Gauthron <chrisg@0-in.com> | |
b19367c6 | 13 | Copyright (C) 2005-2006 Jean Delvare <khali@linux-fr.org> |
1da177e4 LT |
14 | |
15 | This program is free software; you can redistribute it and/or modify | |
16 | it under the terms of the GNU General Public License as published by | |
17 | the Free Software Foundation; either version 2 of the License, or | |
18 | (at your option) any later version. | |
19 | ||
20 | This program is distributed in the hope that it will be useful, | |
21 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | GNU General Public License for more details. | |
24 | ||
25 | You should have received a copy of the GNU General Public License | |
26 | along with this program; if not, write to the Free Software | |
27 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
28 | */ | |
29 | ||
1da177e4 LT |
30 | #include <linux/module.h> |
31 | #include <linux/init.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/jiffies.h> | |
b74f3fdd | 34 | #include <linux/platform_device.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 | ||
b74f3fdd | 43 | #define DRVNAME "it87" |
1da177e4 | 44 | |
8e9afcbb | 45 | enum chips { it87, it8712, it8716, it8718 }; |
1da177e4 | 46 | |
b74f3fdd | 47 | static struct platform_device *pdev; |
48 | ||
1da177e4 LT |
49 | #define REG 0x2e /* The register to read/write */ |
50 | #define DEV 0x07 /* Register: Logical device select */ | |
51 | #define VAL 0x2f /* The value to read/write */ | |
52 | #define PME 0x04 /* The device with the fan registers in it */ | |
87673dd7 | 53 | #define GPIO 0x07 /* The device with the IT8718F VID value in it */ |
1da177e4 LT |
54 | #define DEVID 0x20 /* Register: Device ID */ |
55 | #define DEVREV 0x22 /* Register: Device Revision */ | |
56 | ||
57 | static inline int | |
58 | superio_inb(int reg) | |
59 | { | |
60 | outb(reg, REG); | |
61 | return inb(VAL); | |
62 | } | |
63 | ||
64 | static int superio_inw(int reg) | |
65 | { | |
66 | int val; | |
67 | outb(reg++, REG); | |
68 | val = inb(VAL) << 8; | |
69 | outb(reg, REG); | |
70 | val |= inb(VAL); | |
71 | return val; | |
72 | } | |
73 | ||
74 | static inline void | |
87673dd7 | 75 | superio_select(int ldn) |
1da177e4 LT |
76 | { |
77 | outb(DEV, REG); | |
87673dd7 | 78 | outb(ldn, VAL); |
1da177e4 LT |
79 | } |
80 | ||
81 | static inline void | |
82 | superio_enter(void) | |
83 | { | |
84 | outb(0x87, REG); | |
85 | outb(0x01, REG); | |
86 | outb(0x55, REG); | |
87 | outb(0x55, REG); | |
88 | } | |
89 | ||
90 | static inline void | |
91 | superio_exit(void) | |
92 | { | |
93 | outb(0x02, REG); | |
94 | outb(0x02, VAL); | |
95 | } | |
96 | ||
87673dd7 | 97 | /* Logical device 4 registers */ |
1da177e4 LT |
98 | #define IT8712F_DEVID 0x8712 |
99 | #define IT8705F_DEVID 0x8705 | |
17d648bf | 100 | #define IT8716F_DEVID 0x8716 |
87673dd7 | 101 | #define IT8718F_DEVID 0x8718 |
08a8f6e9 | 102 | #define IT8726F_DEVID 0x8726 |
1da177e4 LT |
103 | #define IT87_ACT_REG 0x30 |
104 | #define IT87_BASE_REG 0x60 | |
105 | ||
87673dd7 JD |
106 | /* Logical device 7 registers (IT8712F and later) */ |
107 | #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ | |
108 | #define IT87_SIO_VID_REG 0xfc /* VID value */ | |
109 | ||
1da177e4 LT |
110 | /* Update battery voltage after every reading if true */ |
111 | static int update_vbat; | |
112 | ||
113 | /* Not all BIOSes properly configure the PWM registers */ | |
114 | static int fix_pwm_polarity; | |
115 | ||
1da177e4 LT |
116 | /* Many IT87 constants specified below */ |
117 | ||
118 | /* Length of ISA address segment */ | |
119 | #define IT87_EXTENT 8 | |
120 | ||
121 | /* Where are the ISA address/data registers relative to the base address */ | |
122 | #define IT87_ADDR_REG_OFFSET 5 | |
123 | #define IT87_DATA_REG_OFFSET 6 | |
124 | ||
125 | /*----- The IT87 registers -----*/ | |
126 | ||
127 | #define IT87_REG_CONFIG 0x00 | |
128 | ||
129 | #define IT87_REG_ALARM1 0x01 | |
130 | #define IT87_REG_ALARM2 0x02 | |
131 | #define IT87_REG_ALARM3 0x03 | |
132 | ||
87673dd7 JD |
133 | /* The IT8718F has the VID value in a different register, in Super-I/O |
134 | configuration space. */ | |
1da177e4 | 135 | #define IT87_REG_VID 0x0a |
17d648bf JD |
136 | /* Warning: register 0x0b is used for something completely different in |
137 | new chips/revisions. I suspect only 16-bit tachometer mode will work | |
138 | for these. */ | |
1da177e4 | 139 | #define IT87_REG_FAN_DIV 0x0b |
17d648bf | 140 | #define IT87_REG_FAN_16BIT 0x0c |
1da177e4 LT |
141 | |
142 | /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ | |
143 | ||
144 | #define IT87_REG_FAN(nr) (0x0d + (nr)) | |
145 | #define IT87_REG_FAN_MIN(nr) (0x10 + (nr)) | |
17d648bf JD |
146 | #define IT87_REG_FANX(nr) (0x18 + (nr)) |
147 | #define IT87_REG_FANX_MIN(nr) (0x1b + (nr)) | |
1da177e4 LT |
148 | #define IT87_REG_FAN_MAIN_CTRL 0x13 |
149 | #define IT87_REG_FAN_CTL 0x14 | |
150 | #define IT87_REG_PWM(nr) (0x15 + (nr)) | |
151 | ||
152 | #define IT87_REG_VIN(nr) (0x20 + (nr)) | |
153 | #define IT87_REG_TEMP(nr) (0x29 + (nr)) | |
154 | ||
155 | #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) | |
156 | #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) | |
157 | #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) | |
158 | #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) | |
159 | ||
1da177e4 LT |
160 | #define IT87_REG_VIN_ENABLE 0x50 |
161 | #define IT87_REG_TEMP_ENABLE 0x51 | |
162 | ||
163 | #define IT87_REG_CHIPID 0x58 | |
164 | ||
165 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255)) | |
166 | #define IN_FROM_REG(val) ((val) * 16) | |
167 | ||
168 | static inline u8 FAN_TO_REG(long rpm, int div) | |
169 | { | |
170 | if (rpm == 0) | |
171 | return 255; | |
172 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
173 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, | |
174 | 254); | |
175 | } | |
176 | ||
17d648bf JD |
177 | static inline u16 FAN16_TO_REG(long rpm) |
178 | { | |
179 | if (rpm == 0) | |
180 | return 0xffff; | |
181 | return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); | |
182 | } | |
183 | ||
1da177e4 | 184 | #define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div))) |
17d648bf JD |
185 | /* The divider is fixed to 2 in 16-bit mode */ |
186 | #define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2)) | |
1da177e4 LT |
187 | |
188 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\ | |
189 | ((val)+500)/1000),-128,127)) | |
190 | #define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000) | |
191 | ||
1da177e4 LT |
192 | #define PWM_TO_REG(val) ((val) >> 1) |
193 | #define PWM_FROM_REG(val) (((val)&0x7f) << 1) | |
194 | ||
195 | static int DIV_TO_REG(int val) | |
196 | { | |
197 | int answer = 0; | |
b9e349f7 | 198 | while (answer < 7 && (val >>= 1)) |
1da177e4 LT |
199 | answer++; |
200 | return answer; | |
201 | } | |
202 | #define DIV_FROM_REG(val) (1 << (val)) | |
203 | ||
f8d0c19a JD |
204 | static const unsigned int pwm_freq[8] = { |
205 | 48000000 / 128, | |
206 | 24000000 / 128, | |
207 | 12000000 / 128, | |
208 | 8000000 / 128, | |
209 | 6000000 / 128, | |
210 | 3000000 / 128, | |
211 | 1500000 / 128, | |
212 | 750000 / 128, | |
213 | }; | |
214 | ||
1da177e4 | 215 | |
b74f3fdd | 216 | struct it87_sio_data { |
217 | enum chips type; | |
218 | /* Values read from Super-I/O config space */ | |
219 | u8 vid_value; | |
220 | }; | |
221 | ||
ed6bafbf JD |
222 | /* For each registered chip, we need to keep some data in memory. |
223 | The structure is dynamically allocated. */ | |
1da177e4 | 224 | struct it87_data { |
943b0830 | 225 | struct class_device *class_dev; |
1da177e4 LT |
226 | enum chips type; |
227 | ||
b74f3fdd | 228 | unsigned short addr; |
229 | const char *name; | |
9a61bf63 | 230 | struct mutex update_lock; |
1da177e4 LT |
231 | char valid; /* !=0 if following fields are valid */ |
232 | unsigned long last_updated; /* In jiffies */ | |
233 | ||
234 | u8 in[9]; /* Register value */ | |
3543a53f JD |
235 | u8 in_max[8]; /* Register value */ |
236 | u8 in_min[8]; /* Register value */ | |
9060f8bd | 237 | u8 has_fan; /* Bitfield, fans enabled */ |
17d648bf JD |
238 | u16 fan[3]; /* Register values, possibly combined */ |
239 | u16 fan_min[3]; /* Register values, possibly combined */ | |
1da177e4 LT |
240 | u8 temp[3]; /* Register value */ |
241 | u8 temp_high[3]; /* Register value */ | |
242 | u8 temp_low[3]; /* Register value */ | |
243 | u8 sensor; /* Register value */ | |
244 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
245 | u8 vid; /* Register encoding, combined */ | |
a7be58a1 | 246 | u8 vrm; |
1da177e4 LT |
247 | u32 alarms; /* Register encoding, combined */ |
248 | u8 fan_main_ctrl; /* Register value */ | |
f8d0c19a | 249 | u8 fan_ctl; /* Register value */ |
1da177e4 LT |
250 | u8 manual_pwm_ctl[3]; /* manual PWM value set by user */ |
251 | }; | |
252 | ||
253 | ||
b74f3fdd | 254 | static int it87_probe(struct platform_device *pdev); |
255 | static int it87_remove(struct platform_device *pdev); | |
1da177e4 | 256 | |
b74f3fdd | 257 | static int it87_read_value(struct it87_data *data, u8 reg); |
258 | static void it87_write_value(struct it87_data *data, u8 reg, u8 value); | |
1da177e4 | 259 | static struct it87_data *it87_update_device(struct device *dev); |
b74f3fdd | 260 | static int it87_check_pwm(struct device *dev); |
261 | static void it87_init_device(struct platform_device *pdev); | |
1da177e4 LT |
262 | |
263 | ||
b74f3fdd | 264 | static struct platform_driver it87_driver = { |
cdaf7934 | 265 | .driver = { |
87218842 | 266 | .owner = THIS_MODULE, |
b74f3fdd | 267 | .name = DRVNAME, |
cdaf7934 | 268 | }, |
b74f3fdd | 269 | .probe = it87_probe, |
270 | .remove = __devexit_p(it87_remove), | |
fde09509 JD |
271 | }; |
272 | ||
20ad93d4 JD |
273 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
274 | char *buf) | |
1da177e4 | 275 | { |
20ad93d4 JD |
276 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
277 | int nr = sensor_attr->index; | |
278 | ||
1da177e4 LT |
279 | struct it87_data *data = it87_update_device(dev); |
280 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); | |
281 | } | |
282 | ||
20ad93d4 JD |
283 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, |
284 | char *buf) | |
1da177e4 | 285 | { |
20ad93d4 JD |
286 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
287 | int nr = sensor_attr->index; | |
288 | ||
1da177e4 LT |
289 | struct it87_data *data = it87_update_device(dev); |
290 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); | |
291 | } | |
292 | ||
20ad93d4 JD |
293 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, |
294 | char *buf) | |
1da177e4 | 295 | { |
20ad93d4 JD |
296 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
297 | int nr = sensor_attr->index; | |
298 | ||
1da177e4 LT |
299 | struct it87_data *data = it87_update_device(dev); |
300 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); | |
301 | } | |
302 | ||
20ad93d4 JD |
303 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
304 | const char *buf, size_t count) | |
1da177e4 | 305 | { |
20ad93d4 JD |
306 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
307 | int nr = sensor_attr->index; | |
308 | ||
b74f3fdd | 309 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
310 | unsigned long val = simple_strtoul(buf, NULL, 10); |
311 | ||
9a61bf63 | 312 | mutex_lock(&data->update_lock); |
1da177e4 | 313 | data->in_min[nr] = IN_TO_REG(val); |
b74f3fdd | 314 | it87_write_value(data, IT87_REG_VIN_MIN(nr), |
1da177e4 | 315 | data->in_min[nr]); |
9a61bf63 | 316 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
317 | return count; |
318 | } | |
20ad93d4 JD |
319 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
320 | const char *buf, size_t count) | |
1da177e4 | 321 | { |
20ad93d4 JD |
322 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
323 | int nr = sensor_attr->index; | |
324 | ||
b74f3fdd | 325 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
326 | unsigned long val = simple_strtoul(buf, NULL, 10); |
327 | ||
9a61bf63 | 328 | mutex_lock(&data->update_lock); |
1da177e4 | 329 | data->in_max[nr] = IN_TO_REG(val); |
b74f3fdd | 330 | it87_write_value(data, IT87_REG_VIN_MAX(nr), |
1da177e4 | 331 | data->in_max[nr]); |
9a61bf63 | 332 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
333 | return count; |
334 | } | |
335 | ||
336 | #define show_in_offset(offset) \ | |
20ad93d4 JD |
337 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
338 | show_in, NULL, offset); | |
1da177e4 LT |
339 | |
340 | #define limit_in_offset(offset) \ | |
20ad93d4 JD |
341 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
342 | show_in_min, set_in_min, offset); \ | |
343 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
344 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
345 | |
346 | show_in_offset(0); | |
347 | limit_in_offset(0); | |
348 | show_in_offset(1); | |
349 | limit_in_offset(1); | |
350 | show_in_offset(2); | |
351 | limit_in_offset(2); | |
352 | show_in_offset(3); | |
353 | limit_in_offset(3); | |
354 | show_in_offset(4); | |
355 | limit_in_offset(4); | |
356 | show_in_offset(5); | |
357 | limit_in_offset(5); | |
358 | show_in_offset(6); | |
359 | limit_in_offset(6); | |
360 | show_in_offset(7); | |
361 | limit_in_offset(7); | |
362 | show_in_offset(8); | |
363 | ||
364 | /* 3 temperatures */ | |
20ad93d4 JD |
365 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
366 | char *buf) | |
1da177e4 | 367 | { |
20ad93d4 JD |
368 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
369 | int nr = sensor_attr->index; | |
370 | ||
1da177e4 LT |
371 | struct it87_data *data = it87_update_device(dev); |
372 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
373 | } | |
20ad93d4 JD |
374 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, |
375 | char *buf) | |
1da177e4 | 376 | { |
20ad93d4 JD |
377 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
378 | int nr = sensor_attr->index; | |
379 | ||
1da177e4 LT |
380 | struct it87_data *data = it87_update_device(dev); |
381 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); | |
382 | } | |
20ad93d4 JD |
383 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
384 | char *buf) | |
1da177e4 | 385 | { |
20ad93d4 JD |
386 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
387 | int nr = sensor_attr->index; | |
388 | ||
1da177e4 LT |
389 | struct it87_data *data = it87_update_device(dev); |
390 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); | |
391 | } | |
20ad93d4 JD |
392 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
393 | const char *buf, size_t count) | |
1da177e4 | 394 | { |
20ad93d4 JD |
395 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
396 | int nr = sensor_attr->index; | |
397 | ||
b74f3fdd | 398 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
399 | int val = simple_strtol(buf, NULL, 10); |
400 | ||
9a61bf63 | 401 | mutex_lock(&data->update_lock); |
1da177e4 | 402 | data->temp_high[nr] = TEMP_TO_REG(val); |
b74f3fdd | 403 | it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); |
9a61bf63 | 404 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
405 | return count; |
406 | } | |
20ad93d4 JD |
407 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
408 | const char *buf, size_t count) | |
1da177e4 | 409 | { |
20ad93d4 JD |
410 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
411 | int nr = sensor_attr->index; | |
412 | ||
b74f3fdd | 413 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
414 | int val = simple_strtol(buf, NULL, 10); |
415 | ||
9a61bf63 | 416 | mutex_lock(&data->update_lock); |
1da177e4 | 417 | data->temp_low[nr] = TEMP_TO_REG(val); |
b74f3fdd | 418 | it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); |
9a61bf63 | 419 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
420 | return count; |
421 | } | |
422 | #define show_temp_offset(offset) \ | |
20ad93d4 JD |
423 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
424 | show_temp, NULL, offset - 1); \ | |
425 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
426 | show_temp_max, set_temp_max, offset - 1); \ | |
427 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
428 | show_temp_min, set_temp_min, offset - 1); | |
1da177e4 LT |
429 | |
430 | show_temp_offset(1); | |
431 | show_temp_offset(2); | |
432 | show_temp_offset(3); | |
433 | ||
20ad93d4 JD |
434 | static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, |
435 | char *buf) | |
1da177e4 | 436 | { |
20ad93d4 JD |
437 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
438 | int nr = sensor_attr->index; | |
439 | ||
1da177e4 LT |
440 | struct it87_data *data = it87_update_device(dev); |
441 | u8 reg = data->sensor; /* In case the value is updated while we use it */ | |
442 | ||
443 | if (reg & (1 << nr)) | |
444 | return sprintf(buf, "3\n"); /* thermal diode */ | |
445 | if (reg & (8 << nr)) | |
446 | return sprintf(buf, "2\n"); /* thermistor */ | |
447 | return sprintf(buf, "0\n"); /* disabled */ | |
448 | } | |
20ad93d4 JD |
449 | static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, |
450 | const char *buf, size_t count) | |
1da177e4 | 451 | { |
20ad93d4 JD |
452 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
453 | int nr = sensor_attr->index; | |
454 | ||
b74f3fdd | 455 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
456 | int val = simple_strtol(buf, NULL, 10); |
457 | ||
9a61bf63 | 458 | mutex_lock(&data->update_lock); |
1da177e4 LT |
459 | |
460 | data->sensor &= ~(1 << nr); | |
461 | data->sensor &= ~(8 << nr); | |
462 | /* 3 = thermal diode; 2 = thermistor; 0 = disabled */ | |
463 | if (val == 3) | |
464 | data->sensor |= 1 << nr; | |
465 | else if (val == 2) | |
466 | data->sensor |= 8 << nr; | |
467 | else if (val != 0) { | |
9a61bf63 | 468 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
469 | return -EINVAL; |
470 | } | |
b74f3fdd | 471 | it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); |
9a61bf63 | 472 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
473 | return count; |
474 | } | |
475 | #define show_sensor_offset(offset) \ | |
20ad93d4 JD |
476 | static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ |
477 | show_sensor, set_sensor, offset - 1); | |
1da177e4 LT |
478 | |
479 | show_sensor_offset(1); | |
480 | show_sensor_offset(2); | |
481 | show_sensor_offset(3); | |
482 | ||
483 | /* 3 Fans */ | |
20ad93d4 JD |
484 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
485 | char *buf) | |
1da177e4 | 486 | { |
20ad93d4 JD |
487 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
488 | int nr = sensor_attr->index; | |
489 | ||
1da177e4 LT |
490 | struct it87_data *data = it87_update_device(dev); |
491 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr], | |
492 | DIV_FROM_REG(data->fan_div[nr]))); | |
493 | } | |
20ad93d4 JD |
494 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
495 | char *buf) | |
1da177e4 | 496 | { |
20ad93d4 JD |
497 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
498 | int nr = sensor_attr->index; | |
499 | ||
1da177e4 LT |
500 | struct it87_data *data = it87_update_device(dev); |
501 | return sprintf(buf,"%d\n", | |
502 | FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); | |
503 | } | |
20ad93d4 JD |
504 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
505 | char *buf) | |
1da177e4 | 506 | { |
20ad93d4 JD |
507 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
508 | int nr = sensor_attr->index; | |
509 | ||
1da177e4 LT |
510 | struct it87_data *data = it87_update_device(dev); |
511 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
512 | } | |
20ad93d4 JD |
513 | static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, |
514 | char *buf) | |
1da177e4 | 515 | { |
20ad93d4 JD |
516 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
517 | int nr = sensor_attr->index; | |
518 | ||
1da177e4 LT |
519 | struct it87_data *data = it87_update_device(dev); |
520 | return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0); | |
521 | } | |
20ad93d4 JD |
522 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
523 | char *buf) | |
1da177e4 | 524 | { |
20ad93d4 JD |
525 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
526 | int nr = sensor_attr->index; | |
527 | ||
1da177e4 LT |
528 | struct it87_data *data = it87_update_device(dev); |
529 | return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]); | |
530 | } | |
f8d0c19a JD |
531 | static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, |
532 | char *buf) | |
533 | { | |
534 | struct it87_data *data = it87_update_device(dev); | |
535 | int index = (data->fan_ctl >> 4) & 0x07; | |
536 | ||
537 | return sprintf(buf, "%u\n", pwm_freq[index]); | |
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 | ||
b74f3fdd | 545 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 | 546 | int val = simple_strtol(buf, NULL, 10); |
7f999aa7 | 547 | u8 reg; |
1da177e4 | 548 | |
9a61bf63 | 549 | mutex_lock(&data->update_lock); |
b74f3fdd | 550 | reg = it87_read_value(data, IT87_REG_FAN_DIV); |
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 | 557 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
b74f3fdd | 558 | it87_write_value(data, 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 | ||
b74f3fdd | 568 | struct it87_data *data = dev_get_drvdata(dev); |
b9e349f7 | 569 | unsigned long val = simple_strtoul(buf, NULL, 10); |
8ab4ec3e | 570 | int min; |
1da177e4 LT |
571 | u8 old; |
572 | ||
9a61bf63 | 573 | mutex_lock(&data->update_lock); |
b74f3fdd | 574 | old = it87_read_value(data, IT87_REG_FAN_DIV); |
1da177e4 | 575 | |
8ab4ec3e JD |
576 | /* Save fan min limit */ |
577 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); | |
1da177e4 LT |
578 | |
579 | switch (nr) { | |
580 | case 0: | |
581 | case 1: | |
582 | data->fan_div[nr] = DIV_TO_REG(val); | |
583 | break; | |
584 | case 2: | |
585 | if (val < 8) | |
586 | data->fan_div[nr] = 1; | |
587 | else | |
588 | data->fan_div[nr] = 3; | |
589 | } | |
590 | val = old & 0x80; | |
591 | val |= (data->fan_div[0] & 0x07); | |
592 | val |= (data->fan_div[1] & 0x07) << 3; | |
593 | if (data->fan_div[2] == 3) | |
594 | val |= 0x1 << 6; | |
b74f3fdd | 595 | it87_write_value(data, IT87_REG_FAN_DIV, val); |
1da177e4 | 596 | |
8ab4ec3e JD |
597 | /* Restore fan min limit */ |
598 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
b74f3fdd | 599 | it87_write_value(data, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); |
8ab4ec3e | 600 | |
9a61bf63 | 601 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
602 | return count; |
603 | } | |
20ad93d4 JD |
604 | static ssize_t set_pwm_enable(struct device *dev, |
605 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 606 | { |
20ad93d4 JD |
607 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
608 | int nr = sensor_attr->index; | |
609 | ||
b74f3fdd | 610 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
611 | int val = simple_strtol(buf, NULL, 10); |
612 | ||
9a61bf63 | 613 | mutex_lock(&data->update_lock); |
1da177e4 LT |
614 | |
615 | if (val == 0) { | |
616 | int tmp; | |
617 | /* make sure the fan is on when in on/off mode */ | |
b74f3fdd | 618 | tmp = it87_read_value(data, IT87_REG_FAN_CTL); |
619 | it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr)); | |
1da177e4 LT |
620 | /* set on/off mode */ |
621 | data->fan_main_ctrl &= ~(1 << nr); | |
b74f3fdd | 622 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 LT |
623 | } else if (val == 1) { |
624 | /* set SmartGuardian mode */ | |
625 | data->fan_main_ctrl |= (1 << nr); | |
b74f3fdd | 626 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 | 627 | /* set saved pwm value, clear FAN_CTLX PWM mode bit */ |
b74f3fdd | 628 | it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); |
1da177e4 | 629 | } else { |
9a61bf63 | 630 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
631 | return -EINVAL; |
632 | } | |
633 | ||
9a61bf63 | 634 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
635 | return count; |
636 | } | |
20ad93d4 JD |
637 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
638 | const char *buf, size_t count) | |
1da177e4 | 639 | { |
20ad93d4 JD |
640 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
641 | int nr = sensor_attr->index; | |
642 | ||
b74f3fdd | 643 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
644 | int val = simple_strtol(buf, NULL, 10); |
645 | ||
646 | if (val < 0 || val > 255) | |
647 | return -EINVAL; | |
648 | ||
9a61bf63 | 649 | mutex_lock(&data->update_lock); |
1da177e4 LT |
650 | data->manual_pwm_ctl[nr] = val; |
651 | if (data->fan_main_ctrl & (1 << nr)) | |
b74f3fdd | 652 | it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); |
9a61bf63 | 653 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
654 | return count; |
655 | } | |
f8d0c19a JD |
656 | static ssize_t set_pwm_freq(struct device *dev, |
657 | struct device_attribute *attr, const char *buf, size_t count) | |
658 | { | |
b74f3fdd | 659 | struct it87_data *data = dev_get_drvdata(dev); |
f8d0c19a JD |
660 | unsigned long val = simple_strtoul(buf, NULL, 10); |
661 | int i; | |
662 | ||
663 | /* Search for the nearest available frequency */ | |
664 | for (i = 0; i < 7; i++) { | |
665 | if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2) | |
666 | break; | |
667 | } | |
668 | ||
669 | mutex_lock(&data->update_lock); | |
b74f3fdd | 670 | data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f; |
f8d0c19a | 671 | data->fan_ctl |= i << 4; |
b74f3fdd | 672 | it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl); |
f8d0c19a JD |
673 | mutex_unlock(&data->update_lock); |
674 | ||
675 | return count; | |
676 | } | |
1da177e4 | 677 | |
20ad93d4 JD |
678 | #define show_fan_offset(offset) \ |
679 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
680 | show_fan, NULL, offset - 1); \ | |
681 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
682 | show_fan_min, set_fan_min, offset - 1); \ | |
683 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
684 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
685 | |
686 | show_fan_offset(1); | |
687 | show_fan_offset(2); | |
688 | show_fan_offset(3); | |
689 | ||
690 | #define show_pwm_offset(offset) \ | |
20ad93d4 JD |
691 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
692 | show_pwm_enable, set_pwm_enable, offset - 1); \ | |
693 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ | |
f8d0c19a JD |
694 | show_pwm, set_pwm, offset - 1); \ |
695 | static DEVICE_ATTR(pwm##offset##_freq, \ | |
696 | (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \ | |
697 | show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); | |
1da177e4 LT |
698 | |
699 | show_pwm_offset(1); | |
700 | show_pwm_offset(2); | |
701 | show_pwm_offset(3); | |
702 | ||
17d648bf JD |
703 | /* A different set of callbacks for 16-bit fans */ |
704 | static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, | |
705 | char *buf) | |
706 | { | |
707 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
708 | int nr = sensor_attr->index; | |
709 | struct it87_data *data = it87_update_device(dev); | |
710 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); | |
711 | } | |
712 | ||
713 | static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, | |
714 | char *buf) | |
715 | { | |
716 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
717 | int nr = sensor_attr->index; | |
718 | struct it87_data *data = it87_update_device(dev); | |
719 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); | |
720 | } | |
721 | ||
722 | static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, | |
723 | const char *buf, size_t count) | |
724 | { | |
725 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
726 | int nr = sensor_attr->index; | |
b74f3fdd | 727 | struct it87_data *data = dev_get_drvdata(dev); |
17d648bf JD |
728 | int val = simple_strtol(buf, NULL, 10); |
729 | ||
730 | mutex_lock(&data->update_lock); | |
731 | data->fan_min[nr] = FAN16_TO_REG(val); | |
b74f3fdd | 732 | it87_write_value(data, IT87_REG_FAN_MIN(nr), |
17d648bf | 733 | data->fan_min[nr] & 0xff); |
b74f3fdd | 734 | it87_write_value(data, IT87_REG_FANX_MIN(nr), |
17d648bf JD |
735 | data->fan_min[nr] >> 8); |
736 | mutex_unlock(&data->update_lock); | |
737 | return count; | |
738 | } | |
739 | ||
740 | /* We want to use the same sysfs file names as 8-bit fans, but we need | |
741 | different variable names, so we have to use SENSOR_ATTR instead of | |
742 | SENSOR_DEVICE_ATTR. */ | |
743 | #define show_fan16_offset(offset) \ | |
744 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ | |
745 | = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ | |
746 | show_fan16, NULL, offset - 1); \ | |
747 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ | |
748 | = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
749 | show_fan16_min, set_fan16_min, offset - 1) | |
750 | ||
751 | show_fan16_offset(1); | |
752 | show_fan16_offset(2); | |
753 | show_fan16_offset(3); | |
754 | ||
1da177e4 | 755 | /* Alarms */ |
30f74292 | 756 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
757 | { |
758 | struct it87_data *data = it87_update_device(dev); | |
68188ba7 | 759 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 | 760 | } |
1d66c64c | 761 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4 LT |
762 | |
763 | static ssize_t | |
30f74292 | 764 | show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
765 | { |
766 | struct it87_data *data = it87_update_device(dev); | |
a7be58a1 | 767 | return sprintf(buf, "%u\n", data->vrm); |
1da177e4 LT |
768 | } |
769 | static ssize_t | |
30f74292 | 770 | store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 | 771 | { |
b74f3fdd | 772 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
773 | u32 val; |
774 | ||
775 | val = simple_strtoul(buf, NULL, 10); | |
776 | data->vrm = val; | |
777 | ||
778 | return count; | |
779 | } | |
780 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
1da177e4 LT |
781 | |
782 | static ssize_t | |
30f74292 | 783 | show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
784 | { |
785 | struct it87_data *data = it87_update_device(dev); | |
786 | return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); | |
787 | } | |
788 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
87808be4 | 789 | |
b74f3fdd | 790 | static ssize_t show_name(struct device *dev, struct device_attribute |
791 | *devattr, char *buf) | |
792 | { | |
793 | struct it87_data *data = dev_get_drvdata(dev); | |
794 | return sprintf(buf, "%s\n", data->name); | |
795 | } | |
796 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
797 | ||
87808be4 JD |
798 | static struct attribute *it87_attributes[] = { |
799 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
800 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
801 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
802 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
803 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
804 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
805 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
806 | &sensor_dev_attr_in7_input.dev_attr.attr, | |
807 | &sensor_dev_attr_in8_input.dev_attr.attr, | |
808 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
809 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
810 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
811 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
812 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
813 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
814 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
815 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
816 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
817 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
818 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
819 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
820 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
821 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
822 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
823 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
824 | ||
825 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
826 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
827 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
828 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
829 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
830 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
831 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
832 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
833 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
834 | &sensor_dev_attr_temp1_type.dev_attr.attr, | |
835 | &sensor_dev_attr_temp2_type.dev_attr.attr, | |
836 | &sensor_dev_attr_temp3_type.dev_attr.attr, | |
837 | ||
838 | &dev_attr_alarms.attr, | |
b74f3fdd | 839 | &dev_attr_name.attr, |
87808be4 JD |
840 | NULL |
841 | }; | |
842 | ||
843 | static const struct attribute_group it87_group = { | |
844 | .attrs = it87_attributes, | |
845 | }; | |
846 | ||
847 | static struct attribute *it87_attributes_opt[] = { | |
848 | &sensor_dev_attr_fan1_input16.dev_attr.attr, | |
849 | &sensor_dev_attr_fan1_min16.dev_attr.attr, | |
850 | &sensor_dev_attr_fan2_input16.dev_attr.attr, | |
851 | &sensor_dev_attr_fan2_min16.dev_attr.attr, | |
852 | &sensor_dev_attr_fan3_input16.dev_attr.attr, | |
853 | &sensor_dev_attr_fan3_min16.dev_attr.attr, | |
854 | ||
855 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
856 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
857 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
858 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
859 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
860 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
861 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
862 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
863 | &sensor_dev_attr_fan3_div.dev_attr.attr, | |
864 | ||
865 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
866 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
867 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
868 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
869 | &sensor_dev_attr_pwm2.dev_attr.attr, | |
870 | &sensor_dev_attr_pwm3.dev_attr.attr, | |
871 | ||
872 | &dev_attr_vrm.attr, | |
873 | &dev_attr_cpu0_vid.attr, | |
874 | NULL | |
875 | }; | |
876 | ||
877 | static const struct attribute_group it87_group_opt = { | |
878 | .attrs = it87_attributes_opt, | |
879 | }; | |
1da177e4 | 880 | |
2d8672c5 | 881 | /* SuperIO detection - will change isa_address if a chip is found */ |
b74f3fdd | 882 | static int __init it87_find(unsigned short *address, |
883 | struct it87_sio_data *sio_data) | |
1da177e4 LT |
884 | { |
885 | int err = -ENODEV; | |
b74f3fdd | 886 | u16 chip_type; |
1da177e4 LT |
887 | |
888 | superio_enter(); | |
889 | chip_type = superio_inw(DEVID); | |
b74f3fdd | 890 | |
891 | switch (chip_type) { | |
892 | case IT8705F_DEVID: | |
893 | sio_data->type = it87; | |
894 | break; | |
895 | case IT8712F_DEVID: | |
896 | sio_data->type = it8712; | |
897 | break; | |
898 | case IT8716F_DEVID: | |
899 | case IT8726F_DEVID: | |
900 | sio_data->type = it8716; | |
901 | break; | |
902 | case IT8718F_DEVID: | |
903 | sio_data->type = it8718; | |
904 | break; | |
905 | case 0xffff: /* No device at all */ | |
906 | goto exit; | |
907 | default: | |
908 | pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n", | |
909 | chip_type); | |
910 | goto exit; | |
911 | } | |
1da177e4 | 912 | |
87673dd7 | 913 | superio_select(PME); |
1da177e4 LT |
914 | if (!(superio_inb(IT87_ACT_REG) & 0x01)) { |
915 | pr_info("it87: Device not activated, skipping\n"); | |
916 | goto exit; | |
917 | } | |
918 | ||
919 | *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); | |
920 | if (*address == 0) { | |
921 | pr_info("it87: Base address not set, skipping\n"); | |
922 | goto exit; | |
923 | } | |
924 | ||
925 | err = 0; | |
926 | pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", | |
927 | chip_type, *address, superio_inb(DEVREV) & 0x0f); | |
928 | ||
87673dd7 JD |
929 | /* Read GPIO config and VID value from LDN 7 (GPIO) */ |
930 | if (chip_type != IT8705F_DEVID) { | |
931 | int reg; | |
932 | ||
933 | superio_select(GPIO); | |
934 | if (chip_type == it8718) | |
b74f3fdd | 935 | sio_data->vid_value = superio_inb(IT87_SIO_VID_REG); |
87673dd7 JD |
936 | |
937 | reg = superio_inb(IT87_SIO_PINX2_REG); | |
938 | if (reg & (1 << 0)) | |
939 | pr_info("it87: in3 is VCC (+5V)\n"); | |
940 | if (reg & (1 << 1)) | |
941 | pr_info("it87: in7 is VCCH (+5V Stand-By)\n"); | |
942 | } | |
943 | ||
1da177e4 LT |
944 | exit: |
945 | superio_exit(); | |
946 | return err; | |
947 | } | |
948 | ||
b74f3fdd | 949 | static int __devinit it87_probe(struct platform_device *pdev) |
1da177e4 | 950 | { |
1da177e4 | 951 | struct it87_data *data; |
b74f3fdd | 952 | struct resource *res; |
953 | struct device *dev = &pdev->dev; | |
954 | struct it87_sio_data *sio_data = dev->platform_data; | |
1da177e4 | 955 | int err = 0; |
1da177e4 | 956 | int enable_pwm_interface; |
b74f3fdd | 957 | static const char *names[] = { |
958 | "it87", | |
959 | "it8712", | |
960 | "it8716", | |
961 | "it8718", | |
962 | }; | |
963 | ||
964 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); | |
965 | if (!request_region(res->start, IT87_EXTENT, DRVNAME)) { | |
966 | dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", | |
967 | (unsigned long)res->start, | |
968 | (unsigned long)(res->start + IT87_EXTENT - 1)); | |
8e9afcbb JD |
969 | err = -EBUSY; |
970 | goto ERROR0; | |
971 | } | |
1da177e4 | 972 | |
ba9c2e8d | 973 | if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { |
1da177e4 LT |
974 | err = -ENOMEM; |
975 | goto ERROR1; | |
976 | } | |
1da177e4 | 977 | |
b74f3fdd | 978 | data->addr = res->start; |
979 | data->type = sio_data->type; | |
980 | data->name = names[sio_data->type]; | |
1da177e4 LT |
981 | |
982 | /* Now, we do the remaining detection. */ | |
b74f3fdd | 983 | if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) |
984 | || it87_read_value(data, IT87_REG_CHIPID) != 0x90) { | |
8e9afcbb JD |
985 | err = -ENODEV; |
986 | goto ERROR2; | |
1da177e4 LT |
987 | } |
988 | ||
b74f3fdd | 989 | platform_set_drvdata(pdev, data); |
1da177e4 | 990 | |
9a61bf63 | 991 | mutex_init(&data->update_lock); |
1da177e4 | 992 | |
1da177e4 | 993 | /* Check PWM configuration */ |
b74f3fdd | 994 | enable_pwm_interface = it87_check_pwm(dev); |
1da177e4 LT |
995 | |
996 | /* Initialize the IT87 chip */ | |
b74f3fdd | 997 | it87_init_device(pdev); |
1da177e4 LT |
998 | |
999 | /* Register sysfs hooks */ | |
b74f3fdd | 1000 | if ((err = sysfs_create_group(&dev->kobj, &it87_group))) |
1001 | goto ERROR2; | |
17d648bf | 1002 | |
9060f8bd | 1003 | /* Do not create fan files for disabled fans */ |
87673dd7 JD |
1004 | if (data->type == it8716 || data->type == it8718) { |
1005 | /* 16-bit tachometers */ | |
9060f8bd | 1006 | if (data->has_fan & (1 << 0)) { |
b74f3fdd | 1007 | if ((err = device_create_file(dev, |
87808be4 | 1008 | &sensor_dev_attr_fan1_input16.dev_attr)) |
b74f3fdd | 1009 | || (err = device_create_file(dev, |
87808be4 JD |
1010 | &sensor_dev_attr_fan1_min16.dev_attr))) |
1011 | goto ERROR4; | |
9060f8bd JD |
1012 | } |
1013 | if (data->has_fan & (1 << 1)) { | |
b74f3fdd | 1014 | if ((err = device_create_file(dev, |
87808be4 | 1015 | &sensor_dev_attr_fan2_input16.dev_attr)) |
b74f3fdd | 1016 | || (err = device_create_file(dev, |
87808be4 JD |
1017 | &sensor_dev_attr_fan2_min16.dev_attr))) |
1018 | goto ERROR4; | |
9060f8bd JD |
1019 | } |
1020 | if (data->has_fan & (1 << 2)) { | |
b74f3fdd | 1021 | if ((err = device_create_file(dev, |
87808be4 | 1022 | &sensor_dev_attr_fan3_input16.dev_attr)) |
b74f3fdd | 1023 | || (err = device_create_file(dev, |
87808be4 JD |
1024 | &sensor_dev_attr_fan3_min16.dev_attr))) |
1025 | goto ERROR4; | |
9060f8bd | 1026 | } |
17d648bf | 1027 | } else { |
87673dd7 | 1028 | /* 8-bit tachometers with clock divider */ |
9060f8bd | 1029 | if (data->has_fan & (1 << 0)) { |
b74f3fdd | 1030 | if ((err = device_create_file(dev, |
87808be4 | 1031 | &sensor_dev_attr_fan1_input.dev_attr)) |
b74f3fdd | 1032 | || (err = device_create_file(dev, |
87808be4 | 1033 | &sensor_dev_attr_fan1_min.dev_attr)) |
b74f3fdd | 1034 | || (err = device_create_file(dev, |
87808be4 JD |
1035 | &sensor_dev_attr_fan1_div.dev_attr))) |
1036 | goto ERROR4; | |
9060f8bd JD |
1037 | } |
1038 | if (data->has_fan & (1 << 1)) { | |
b74f3fdd | 1039 | if ((err = device_create_file(dev, |
87808be4 | 1040 | &sensor_dev_attr_fan2_input.dev_attr)) |
b74f3fdd | 1041 | || (err = device_create_file(dev, |
87808be4 | 1042 | &sensor_dev_attr_fan2_min.dev_attr)) |
b74f3fdd | 1043 | || (err = device_create_file(dev, |
87808be4 JD |
1044 | &sensor_dev_attr_fan2_div.dev_attr))) |
1045 | goto ERROR4; | |
9060f8bd JD |
1046 | } |
1047 | if (data->has_fan & (1 << 2)) { | |
b74f3fdd | 1048 | if ((err = device_create_file(dev, |
87808be4 | 1049 | &sensor_dev_attr_fan3_input.dev_attr)) |
b74f3fdd | 1050 | || (err = device_create_file(dev, |
87808be4 | 1051 | &sensor_dev_attr_fan3_min.dev_attr)) |
b74f3fdd | 1052 | || (err = device_create_file(dev, |
87808be4 JD |
1053 | &sensor_dev_attr_fan3_div.dev_attr))) |
1054 | goto ERROR4; | |
9060f8bd | 1055 | } |
17d648bf JD |
1056 | } |
1057 | ||
1da177e4 | 1058 | if (enable_pwm_interface) { |
b74f3fdd | 1059 | if ((err = device_create_file(dev, |
87808be4 | 1060 | &sensor_dev_attr_pwm1_enable.dev_attr)) |
b74f3fdd | 1061 | || (err = device_create_file(dev, |
87808be4 | 1062 | &sensor_dev_attr_pwm2_enable.dev_attr)) |
b74f3fdd | 1063 | || (err = device_create_file(dev, |
87808be4 | 1064 | &sensor_dev_attr_pwm3_enable.dev_attr)) |
b74f3fdd | 1065 | || (err = device_create_file(dev, |
87808be4 | 1066 | &sensor_dev_attr_pwm1.dev_attr)) |
b74f3fdd | 1067 | || (err = device_create_file(dev, |
87808be4 | 1068 | &sensor_dev_attr_pwm2.dev_attr)) |
b74f3fdd | 1069 | || (err = device_create_file(dev, |
f8d0c19a | 1070 | &sensor_dev_attr_pwm3.dev_attr)) |
b74f3fdd | 1071 | || (err = device_create_file(dev, |
f8d0c19a | 1072 | &dev_attr_pwm1_freq)) |
b74f3fdd | 1073 | || (err = device_create_file(dev, |
f8d0c19a | 1074 | &dev_attr_pwm2_freq)) |
b74f3fdd | 1075 | || (err = device_create_file(dev, |
f8d0c19a | 1076 | &dev_attr_pwm3_freq))) |
87808be4 | 1077 | goto ERROR4; |
1da177e4 LT |
1078 | } |
1079 | ||
87673dd7 JD |
1080 | if (data->type == it8712 || data->type == it8716 |
1081 | || data->type == it8718) { | |
303760b4 | 1082 | data->vrm = vid_which_vrm(); |
87673dd7 | 1083 | /* VID reading from Super-I/O config space if available */ |
b74f3fdd | 1084 | data->vid = sio_data->vid_value; |
1085 | if ((err = device_create_file(dev, | |
87808be4 | 1086 | &dev_attr_vrm)) |
b74f3fdd | 1087 | || (err = device_create_file(dev, |
87808be4 JD |
1088 | &dev_attr_cpu0_vid))) |
1089 | goto ERROR4; | |
1090 | } | |
1091 | ||
b74f3fdd | 1092 | data->class_dev = hwmon_device_register(dev); |
87808be4 JD |
1093 | if (IS_ERR(data->class_dev)) { |
1094 | err = PTR_ERR(data->class_dev); | |
1095 | goto ERROR4; | |
1da177e4 LT |
1096 | } |
1097 | ||
1098 | return 0; | |
1099 | ||
87808be4 | 1100 | ERROR4: |
b74f3fdd | 1101 | sysfs_remove_group(&dev->kobj, &it87_group); |
1102 | sysfs_remove_group(&dev->kobj, &it87_group_opt); | |
1da177e4 | 1103 | ERROR2: |
b74f3fdd | 1104 | platform_set_drvdata(pdev, NULL); |
1da177e4 LT |
1105 | kfree(data); |
1106 | ERROR1: | |
b74f3fdd | 1107 | release_region(res->start, IT87_EXTENT); |
1da177e4 LT |
1108 | ERROR0: |
1109 | return err; | |
1110 | } | |
1111 | ||
b74f3fdd | 1112 | static int __devexit it87_remove(struct platform_device *pdev) |
1da177e4 | 1113 | { |
b74f3fdd | 1114 | struct it87_data *data = platform_get_drvdata(pdev); |
1da177e4 | 1115 | |
943b0830 | 1116 | hwmon_device_unregister(data->class_dev); |
b74f3fdd | 1117 | sysfs_remove_group(&pdev->dev.kobj, &it87_group); |
1118 | sysfs_remove_group(&pdev->dev.kobj, &it87_group_opt); | |
943b0830 | 1119 | |
b74f3fdd | 1120 | release_region(data->addr, IT87_EXTENT); |
1121 | platform_set_drvdata(pdev, NULL); | |
943b0830 | 1122 | kfree(data); |
1da177e4 LT |
1123 | |
1124 | return 0; | |
1125 | } | |
1126 | ||
7f999aa7 | 1127 | /* Must be called with data->update_lock held, except during initialization. |
1da177e4 LT |
1128 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1129 | would slow down the IT87 access and should not be necessary. */ | |
b74f3fdd | 1130 | static int it87_read_value(struct it87_data *data, u8 reg) |
1da177e4 | 1131 | { |
b74f3fdd | 1132 | outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); |
1133 | return inb_p(data->addr + IT87_DATA_REG_OFFSET); | |
1da177e4 LT |
1134 | } |
1135 | ||
7f999aa7 | 1136 | /* Must be called with data->update_lock held, except during initialization. |
1da177e4 LT |
1137 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1138 | would slow down the IT87 access and should not be necessary. */ | |
b74f3fdd | 1139 | static void it87_write_value(struct it87_data *data, u8 reg, u8 value) |
1da177e4 | 1140 | { |
b74f3fdd | 1141 | outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); |
1142 | outb_p(value, data->addr + IT87_DATA_REG_OFFSET); | |
1da177e4 LT |
1143 | } |
1144 | ||
1145 | /* Return 1 if and only if the PWM interface is safe to use */ | |
b74f3fdd | 1146 | static int __devinit it87_check_pwm(struct device *dev) |
1da177e4 | 1147 | { |
b74f3fdd | 1148 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
1149 | /* Some BIOSes fail to correctly configure the IT87 fans. All fans off |
1150 | * and polarity set to active low is sign that this is the case so we | |
1151 | * disable pwm control to protect the user. */ | |
b74f3fdd | 1152 | int tmp = it87_read_value(data, IT87_REG_FAN_CTL); |
1da177e4 LT |
1153 | if ((tmp & 0x87) == 0) { |
1154 | if (fix_pwm_polarity) { | |
1155 | /* The user asks us to attempt a chip reconfiguration. | |
1156 | * This means switching to active high polarity and | |
1157 | * inverting all fan speed values. */ | |
1158 | int i; | |
1159 | u8 pwm[3]; | |
1160 | ||
1161 | for (i = 0; i < 3; i++) | |
b74f3fdd | 1162 | pwm[i] = it87_read_value(data, |
1da177e4 LT |
1163 | IT87_REG_PWM(i)); |
1164 | ||
1165 | /* If any fan is in automatic pwm mode, the polarity | |
1166 | * might be correct, as suspicious as it seems, so we | |
1167 | * better don't change anything (but still disable the | |
1168 | * PWM interface). */ | |
1169 | if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { | |
b74f3fdd | 1170 | dev_info(dev, "Reconfiguring PWM to " |
1da177e4 | 1171 | "active high polarity\n"); |
b74f3fdd | 1172 | it87_write_value(data, IT87_REG_FAN_CTL, |
1da177e4 LT |
1173 | tmp | 0x87); |
1174 | for (i = 0; i < 3; i++) | |
b74f3fdd | 1175 | it87_write_value(data, |
1da177e4 LT |
1176 | IT87_REG_PWM(i), |
1177 | 0x7f & ~pwm[i]); | |
1178 | return 1; | |
1179 | } | |
1180 | ||
b74f3fdd | 1181 | dev_info(dev, "PWM configuration is " |
1da177e4 LT |
1182 | "too broken to be fixed\n"); |
1183 | } | |
1184 | ||
b74f3fdd | 1185 | dev_info(dev, "Detected broken BIOS " |
1da177e4 LT |
1186 | "defaults, disabling PWM interface\n"); |
1187 | return 0; | |
1188 | } else if (fix_pwm_polarity) { | |
b74f3fdd | 1189 | dev_info(dev, "PWM configuration looks " |
1da177e4 LT |
1190 | "sane, won't touch\n"); |
1191 | } | |
1192 | ||
1193 | return 1; | |
1194 | } | |
1195 | ||
1196 | /* Called when we have found a new IT87. */ | |
b74f3fdd | 1197 | static void __devinit it87_init_device(struct platform_device *pdev) |
1da177e4 | 1198 | { |
b74f3fdd | 1199 | struct it87_data *data = platform_get_drvdata(pdev); |
1da177e4 LT |
1200 | int tmp, i; |
1201 | ||
1202 | /* initialize to sane defaults: | |
1203 | * - if the chip is in manual pwm mode, this will be overwritten with | |
1204 | * the actual settings on the chip (so in this case, initialization | |
1205 | * is not needed) | |
1206 | * - if in automatic or on/off mode, we could switch to manual mode, | |
1207 | * read the registers and set manual_pwm_ctl accordingly, but currently | |
1208 | * this is not implemented, so we initialize to something sane */ | |
1209 | for (i = 0; i < 3; i++) { | |
1210 | data->manual_pwm_ctl[i] = 0xff; | |
1211 | } | |
1212 | ||
c5df9b7a JD |
1213 | /* Some chips seem to have default value 0xff for all limit |
1214 | * registers. For low voltage limits it makes no sense and triggers | |
1215 | * alarms, so change to 0 instead. For high temperature limits, it | |
1216 | * means -1 degree C, which surprisingly doesn't trigger an alarm, | |
1217 | * but is still confusing, so change to 127 degrees C. */ | |
1218 | for (i = 0; i < 8; i++) { | |
b74f3fdd | 1219 | tmp = it87_read_value(data, IT87_REG_VIN_MIN(i)); |
c5df9b7a | 1220 | if (tmp == 0xff) |
b74f3fdd | 1221 | it87_write_value(data, IT87_REG_VIN_MIN(i), 0); |
c5df9b7a JD |
1222 | } |
1223 | for (i = 0; i < 3; i++) { | |
b74f3fdd | 1224 | tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i)); |
c5df9b7a | 1225 | if (tmp == 0xff) |
b74f3fdd | 1226 | it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127); |
c5df9b7a JD |
1227 | } |
1228 | ||
1da177e4 | 1229 | /* Check if temperature channnels are reset manually or by some reason */ |
b74f3fdd | 1230 | tmp = it87_read_value(data, IT87_REG_TEMP_ENABLE); |
1da177e4 LT |
1231 | if ((tmp & 0x3f) == 0) { |
1232 | /* Temp1,Temp3=thermistor; Temp2=thermal diode */ | |
1233 | tmp = (tmp & 0xc0) | 0x2a; | |
b74f3fdd | 1234 | it87_write_value(data, IT87_REG_TEMP_ENABLE, tmp); |
1da177e4 LT |
1235 | } |
1236 | data->sensor = tmp; | |
1237 | ||
1238 | /* Check if voltage monitors are reset manually or by some reason */ | |
b74f3fdd | 1239 | tmp = it87_read_value(data, IT87_REG_VIN_ENABLE); |
1da177e4 LT |
1240 | if ((tmp & 0xff) == 0) { |
1241 | /* Enable all voltage monitors */ | |
b74f3fdd | 1242 | it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff); |
1da177e4 LT |
1243 | } |
1244 | ||
1245 | /* Check if tachometers are reset manually or by some reason */ | |
b74f3fdd | 1246 | data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL); |
1da177e4 LT |
1247 | if ((data->fan_main_ctrl & 0x70) == 0) { |
1248 | /* Enable all fan tachometers */ | |
1249 | data->fan_main_ctrl |= 0x70; | |
b74f3fdd | 1250 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 | 1251 | } |
9060f8bd | 1252 | data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; |
1da177e4 | 1253 | |
17d648bf | 1254 | /* Set tachometers to 16-bit mode if needed */ |
87673dd7 | 1255 | if (data->type == it8716 || data->type == it8718) { |
b74f3fdd | 1256 | tmp = it87_read_value(data, IT87_REG_FAN_16BIT); |
9060f8bd | 1257 | if (~tmp & 0x07 & data->has_fan) { |
b74f3fdd | 1258 | dev_dbg(&pdev->dev, |
17d648bf | 1259 | "Setting fan1-3 to 16-bit mode\n"); |
b74f3fdd | 1260 | it87_write_value(data, IT87_REG_FAN_16BIT, |
17d648bf JD |
1261 | tmp | 0x07); |
1262 | } | |
1263 | } | |
1264 | ||
1da177e4 LT |
1265 | /* Set current fan mode registers and the default settings for the |
1266 | * other mode registers */ | |
1267 | for (i = 0; i < 3; i++) { | |
1268 | if (data->fan_main_ctrl & (1 << i)) { | |
1269 | /* pwm mode */ | |
b74f3fdd | 1270 | tmp = it87_read_value(data, IT87_REG_PWM(i)); |
1da177e4 LT |
1271 | if (tmp & 0x80) { |
1272 | /* automatic pwm - not yet implemented, but | |
1273 | * leave the settings made by the BIOS alone | |
1274 | * until a change is requested via the sysfs | |
1275 | * interface */ | |
1276 | } else { | |
1277 | /* manual pwm */ | |
1278 | data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp); | |
1279 | } | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | /* Start monitoring */ | |
b74f3fdd | 1284 | it87_write_value(data, IT87_REG_CONFIG, |
1285 | (it87_read_value(data, IT87_REG_CONFIG) & 0x36) | |
1da177e4 LT |
1286 | | (update_vbat ? 0x41 : 0x01)); |
1287 | } | |
1288 | ||
1289 | static struct it87_data *it87_update_device(struct device *dev) | |
1290 | { | |
b74f3fdd | 1291 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
1292 | int i; |
1293 | ||
9a61bf63 | 1294 | mutex_lock(&data->update_lock); |
1da177e4 LT |
1295 | |
1296 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
1297 | || !data->valid) { | |
1298 | ||
1299 | if (update_vbat) { | |
1300 | /* Cleared after each update, so reenable. Value | |
1301 | returned by this read will be previous value */ | |
b74f3fdd | 1302 | it87_write_value(data, IT87_REG_CONFIG, |
1303 | it87_read_value(data, IT87_REG_CONFIG) | 0x40); | |
1da177e4 LT |
1304 | } |
1305 | for (i = 0; i <= 7; i++) { | |
1306 | data->in[i] = | |
b74f3fdd | 1307 | it87_read_value(data, IT87_REG_VIN(i)); |
1da177e4 | 1308 | data->in_min[i] = |
b74f3fdd | 1309 | it87_read_value(data, IT87_REG_VIN_MIN(i)); |
1da177e4 | 1310 | data->in_max[i] = |
b74f3fdd | 1311 | it87_read_value(data, IT87_REG_VIN_MAX(i)); |
1da177e4 | 1312 | } |
3543a53f | 1313 | /* in8 (battery) has no limit registers */ |
1da177e4 | 1314 | data->in[8] = |
b74f3fdd | 1315 | it87_read_value(data, IT87_REG_VIN(8)); |
1da177e4 LT |
1316 | |
1317 | for (i = 0; i < 3; i++) { | |
9060f8bd JD |
1318 | /* Skip disabled fans */ |
1319 | if (!(data->has_fan & (1 << i))) | |
1320 | continue; | |
1321 | ||
1da177e4 | 1322 | data->fan_min[i] = |
b74f3fdd | 1323 | it87_read_value(data, IT87_REG_FAN_MIN(i)); |
1324 | data->fan[i] = it87_read_value(data, | |
17d648bf JD |
1325 | IT87_REG_FAN(i)); |
1326 | /* Add high byte if in 16-bit mode */ | |
87673dd7 | 1327 | if (data->type == it8716 || data->type == it8718) { |
b74f3fdd | 1328 | data->fan[i] |= it87_read_value(data, |
17d648bf | 1329 | IT87_REG_FANX(i)) << 8; |
b74f3fdd | 1330 | data->fan_min[i] |= it87_read_value(data, |
17d648bf JD |
1331 | IT87_REG_FANX_MIN(i)) << 8; |
1332 | } | |
1da177e4 LT |
1333 | } |
1334 | for (i = 0; i < 3; i++) { | |
1335 | data->temp[i] = | |
b74f3fdd | 1336 | it87_read_value(data, IT87_REG_TEMP(i)); |
1da177e4 | 1337 | data->temp_high[i] = |
b74f3fdd | 1338 | it87_read_value(data, IT87_REG_TEMP_HIGH(i)); |
1da177e4 | 1339 | data->temp_low[i] = |
b74f3fdd | 1340 | it87_read_value(data, IT87_REG_TEMP_LOW(i)); |
1da177e4 LT |
1341 | } |
1342 | ||
17d648bf | 1343 | /* Newer chips don't have clock dividers */ |
87673dd7 JD |
1344 | if ((data->has_fan & 0x07) && data->type != it8716 |
1345 | && data->type != it8718) { | |
b74f3fdd | 1346 | i = it87_read_value(data, IT87_REG_FAN_DIV); |
17d648bf JD |
1347 | data->fan_div[0] = i & 0x07; |
1348 | data->fan_div[1] = (i >> 3) & 0x07; | |
1349 | data->fan_div[2] = (i & 0x40) ? 3 : 1; | |
1350 | } | |
1da177e4 LT |
1351 | |
1352 | data->alarms = | |
b74f3fdd | 1353 | it87_read_value(data, IT87_REG_ALARM1) | |
1354 | (it87_read_value(data, IT87_REG_ALARM2) << 8) | | |
1355 | (it87_read_value(data, IT87_REG_ALARM3) << 16); | |
1356 | data->fan_main_ctrl = it87_read_value(data, | |
1357 | IT87_REG_FAN_MAIN_CTRL); | |
1358 | data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL); | |
1359 | ||
1360 | data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE); | |
1da177e4 | 1361 | /* The 8705 does not have VID capability */ |
17d648bf | 1362 | if (data->type == it8712 || data->type == it8716) { |
b74f3fdd | 1363 | data->vid = it87_read_value(data, IT87_REG_VID); |
17d648bf JD |
1364 | /* The older IT8712F revisions had only 5 VID pins, |
1365 | but we assume it is always safe to read 6 bits. */ | |
1366 | data->vid &= 0x3f; | |
1da177e4 LT |
1367 | } |
1368 | data->last_updated = jiffies; | |
1369 | data->valid = 1; | |
1370 | } | |
1371 | ||
9a61bf63 | 1372 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1373 | |
1374 | return data; | |
1375 | } | |
1376 | ||
b74f3fdd | 1377 | static int __init it87_device_add(unsigned short address, |
1378 | const struct it87_sio_data *sio_data) | |
1379 | { | |
1380 | struct resource res = { | |
1381 | .start = address , | |
1382 | .end = address + IT87_EXTENT - 1, | |
1383 | .name = DRVNAME, | |
1384 | .flags = IORESOURCE_IO, | |
1385 | }; | |
1386 | int err; | |
1387 | ||
1388 | pdev = platform_device_alloc(DRVNAME, address); | |
1389 | if (!pdev) { | |
1390 | err = -ENOMEM; | |
1391 | printk(KERN_ERR DRVNAME ": Device allocation failed\n"); | |
1392 | goto exit; | |
1393 | } | |
1394 | ||
1395 | err = platform_device_add_resources(pdev, &res, 1); | |
1396 | if (err) { | |
1397 | printk(KERN_ERR DRVNAME ": Device resource addition failed " | |
1398 | "(%d)\n", err); | |
1399 | goto exit_device_put; | |
1400 | } | |
1401 | ||
1402 | err = platform_device_add_data(pdev, sio_data, | |
1403 | sizeof(struct it87_sio_data)); | |
1404 | if (err) { | |
1405 | printk(KERN_ERR DRVNAME ": Platform data allocation failed\n"); | |
1406 | goto exit_device_put; | |
1407 | } | |
1408 | ||
1409 | err = platform_device_add(pdev); | |
1410 | if (err) { | |
1411 | printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", | |
1412 | err); | |
1413 | goto exit_device_put; | |
1414 | } | |
1415 | ||
1416 | return 0; | |
1417 | ||
1418 | exit_device_put: | |
1419 | platform_device_put(pdev); | |
1420 | exit: | |
1421 | return err; | |
1422 | } | |
1423 | ||
1da177e4 LT |
1424 | static int __init sm_it87_init(void) |
1425 | { | |
b74f3fdd | 1426 | int err; |
1427 | unsigned short isa_address=0; | |
1428 | struct it87_sio_data sio_data; | |
1429 | ||
1430 | err = it87_find(&isa_address, &sio_data); | |
1431 | if (err) | |
1432 | return err; | |
1433 | err = platform_driver_register(&it87_driver); | |
1434 | if (err) | |
1435 | return err; | |
fde09509 | 1436 | |
b74f3fdd | 1437 | err = it87_device_add(isa_address, &sio_data); |
1438 | if (err){ | |
1439 | platform_driver_unregister(&it87_driver); | |
1440 | return err; | |
1441 | } | |
1442 | ||
1443 | return 0; | |
1da177e4 LT |
1444 | } |
1445 | ||
1446 | static void __exit sm_it87_exit(void) | |
1447 | { | |
b74f3fdd | 1448 | platform_device_unregister(pdev); |
1449 | platform_driver_unregister(&it87_driver); | |
1da177e4 LT |
1450 | } |
1451 | ||
1452 | ||
b19367c6 JD |
1453 | MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>, " |
1454 | "Jean Delvare <khali@linux-fr.org>"); | |
08a8f6e9 | 1455 | MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8726F, SiS950 driver"); |
1da177e4 LT |
1456 | module_param(update_vbat, bool, 0); |
1457 | MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); | |
1458 | module_param(fix_pwm_polarity, bool, 0); | |
1459 | MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)"); | |
1460 | MODULE_LICENSE("GPL"); | |
1461 | ||
1462 | module_init(sm_it87_init); | |
1463 | module_exit(sm_it87_exit); |