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 |
b4da93e4 | 17 | IT8720F Super I/O chip w/LPC interface |
08a8f6e9 | 18 | IT8726F Super I/O chip w/LPC interface |
1da177e4 LT |
19 | Sis950 A clone of the IT8705F |
20 | ||
f1d8e332 | 21 | Copyright (C) 2001 Chris Gauthron |
0124dd78 | 22 | Copyright (C) 2005-2007 Jean Delvare <khali@linux-fr.org> |
1da177e4 LT |
23 | |
24 | This program is free software; you can redistribute it and/or modify | |
25 | it under the terms of the GNU General Public License as published by | |
26 | the Free Software Foundation; either version 2 of the License, or | |
27 | (at your option) any later version. | |
28 | ||
29 | This program is distributed in the hope that it will be useful, | |
30 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
31 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
32 | GNU General Public License for more details. | |
33 | ||
34 | You should have received a copy of the GNU General Public License | |
35 | along with this program; if not, write to the Free Software | |
36 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
37 | */ | |
38 | ||
1da177e4 LT |
39 | #include <linux/module.h> |
40 | #include <linux/init.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/jiffies.h> | |
b74f3fdd | 43 | #include <linux/platform_device.h> |
943b0830 | 44 | #include <linux/hwmon.h> |
303760b4 JD |
45 | #include <linux/hwmon-sysfs.h> |
46 | #include <linux/hwmon-vid.h> | |
943b0830 | 47 | #include <linux/err.h> |
9a61bf63 | 48 | #include <linux/mutex.h> |
87808be4 | 49 | #include <linux/sysfs.h> |
98dd22c3 JD |
50 | #include <linux/string.h> |
51 | #include <linux/dmi.h> | |
b9acb64a | 52 | #include <linux/acpi.h> |
6055fae8 | 53 | #include <linux/io.h> |
1da177e4 | 54 | |
b74f3fdd | 55 | #define DRVNAME "it87" |
1da177e4 | 56 | |
b4da93e4 | 57 | enum chips { it87, it8712, it8716, it8718, it8720 }; |
1da177e4 | 58 | |
67b671bc JD |
59 | static unsigned short force_id; |
60 | module_param(force_id, ushort, 0); | |
61 | MODULE_PARM_DESC(force_id, "Override the detected device ID"); | |
62 | ||
b74f3fdd | 63 | static struct platform_device *pdev; |
64 | ||
1da177e4 LT |
65 | #define REG 0x2e /* The register to read/write */ |
66 | #define DEV 0x07 /* Register: Logical device select */ | |
67 | #define VAL 0x2f /* The value to read/write */ | |
68 | #define PME 0x04 /* The device with the fan registers in it */ | |
b4da93e4 JMS |
69 | |
70 | /* The device with the IT8718F/IT8720F VID value in it */ | |
71 | #define GPIO 0x07 | |
72 | ||
1da177e4 LT |
73 | #define DEVID 0x20 /* Register: Device ID */ |
74 | #define DEVREV 0x22 /* Register: Device Revision */ | |
75 | ||
76 | static inline int | |
77 | superio_inb(int reg) | |
78 | { | |
79 | outb(reg, REG); | |
80 | return inb(VAL); | |
81 | } | |
82 | ||
83 | static int superio_inw(int reg) | |
84 | { | |
85 | int val; | |
86 | outb(reg++, REG); | |
87 | val = inb(VAL) << 8; | |
88 | outb(reg, REG); | |
89 | val |= inb(VAL); | |
90 | return val; | |
91 | } | |
92 | ||
93 | static inline void | |
87673dd7 | 94 | superio_select(int ldn) |
1da177e4 LT |
95 | { |
96 | outb(DEV, REG); | |
87673dd7 | 97 | outb(ldn, VAL); |
1da177e4 LT |
98 | } |
99 | ||
100 | static inline void | |
101 | superio_enter(void) | |
102 | { | |
103 | outb(0x87, REG); | |
104 | outb(0x01, REG); | |
105 | outb(0x55, REG); | |
106 | outb(0x55, REG); | |
107 | } | |
108 | ||
109 | static inline void | |
110 | superio_exit(void) | |
111 | { | |
112 | outb(0x02, REG); | |
113 | outb(0x02, VAL); | |
114 | } | |
115 | ||
87673dd7 | 116 | /* Logical device 4 registers */ |
1da177e4 LT |
117 | #define IT8712F_DEVID 0x8712 |
118 | #define IT8705F_DEVID 0x8705 | |
17d648bf | 119 | #define IT8716F_DEVID 0x8716 |
87673dd7 | 120 | #define IT8718F_DEVID 0x8718 |
b4da93e4 | 121 | #define IT8720F_DEVID 0x8720 |
08a8f6e9 | 122 | #define IT8726F_DEVID 0x8726 |
1da177e4 LT |
123 | #define IT87_ACT_REG 0x30 |
124 | #define IT87_BASE_REG 0x60 | |
125 | ||
87673dd7 | 126 | /* Logical device 7 registers (IT8712F and later) */ |
895ff267 | 127 | #define IT87_SIO_GPIO3_REG 0x27 |
87673dd7 JD |
128 | #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ |
129 | #define IT87_SIO_VID_REG 0xfc /* VID value */ | |
130 | ||
1da177e4 LT |
131 | /* Update battery voltage after every reading if true */ |
132 | static int update_vbat; | |
133 | ||
134 | /* Not all BIOSes properly configure the PWM registers */ | |
135 | static int fix_pwm_polarity; | |
136 | ||
1da177e4 LT |
137 | /* Many IT87 constants specified below */ |
138 | ||
139 | /* Length of ISA address segment */ | |
140 | #define IT87_EXTENT 8 | |
141 | ||
87b4b663 BH |
142 | /* Length of ISA address segment for Environmental Controller */ |
143 | #define IT87_EC_EXTENT 2 | |
144 | ||
145 | /* Offset of EC registers from ISA base address */ | |
146 | #define IT87_EC_OFFSET 5 | |
147 | ||
148 | /* Where are the ISA address/data registers relative to the EC base address */ | |
149 | #define IT87_ADDR_REG_OFFSET 0 | |
150 | #define IT87_DATA_REG_OFFSET 1 | |
1da177e4 LT |
151 | |
152 | /*----- The IT87 registers -----*/ | |
153 | ||
154 | #define IT87_REG_CONFIG 0x00 | |
155 | ||
156 | #define IT87_REG_ALARM1 0x01 | |
157 | #define IT87_REG_ALARM2 0x02 | |
158 | #define IT87_REG_ALARM3 0x03 | |
159 | ||
b4da93e4 JMS |
160 | /* The IT8718F and IT8720F have the VID value in a different register, in |
161 | Super-I/O configuration space. */ | |
1da177e4 | 162 | #define IT87_REG_VID 0x0a |
0475169c AP |
163 | /* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b |
164 | for fan divisors. Later IT8712F revisions must use 16-bit tachometer | |
165 | mode. */ | |
1da177e4 | 166 | #define IT87_REG_FAN_DIV 0x0b |
17d648bf | 167 | #define IT87_REG_FAN_16BIT 0x0c |
1da177e4 LT |
168 | |
169 | /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ | |
170 | ||
c7f1f716 JD |
171 | static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 }; |
172 | static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 }; | |
173 | static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 }; | |
174 | static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 }; | |
1da177e4 LT |
175 | #define IT87_REG_FAN_MAIN_CTRL 0x13 |
176 | #define IT87_REG_FAN_CTL 0x14 | |
177 | #define IT87_REG_PWM(nr) (0x15 + (nr)) | |
178 | ||
179 | #define IT87_REG_VIN(nr) (0x20 + (nr)) | |
180 | #define IT87_REG_TEMP(nr) (0x29 + (nr)) | |
181 | ||
182 | #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) | |
183 | #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) | |
184 | #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) | |
185 | #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) | |
186 | ||
1da177e4 LT |
187 | #define IT87_REG_VIN_ENABLE 0x50 |
188 | #define IT87_REG_TEMP_ENABLE 0x51 | |
189 | ||
190 | #define IT87_REG_CHIPID 0x58 | |
191 | ||
192 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255)) | |
193 | #define IN_FROM_REG(val) ((val) * 16) | |
194 | ||
195 | static inline u8 FAN_TO_REG(long rpm, int div) | |
196 | { | |
197 | if (rpm == 0) | |
198 | return 255; | |
199 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
200 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, | |
201 | 254); | |
202 | } | |
203 | ||
17d648bf JD |
204 | static inline u16 FAN16_TO_REG(long rpm) |
205 | { | |
206 | if (rpm == 0) | |
207 | return 0xffff; | |
208 | return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); | |
209 | } | |
210 | ||
1da177e4 | 211 | #define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div))) |
17d648bf JD |
212 | /* The divider is fixed to 2 in 16-bit mode */ |
213 | #define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2)) | |
1da177e4 LT |
214 | |
215 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\ | |
216 | ((val)+500)/1000),-128,127)) | |
e267d250 | 217 | #define TEMP_FROM_REG(val) ((val) * 1000) |
1da177e4 | 218 | |
1da177e4 LT |
219 | #define PWM_TO_REG(val) ((val) >> 1) |
220 | #define PWM_FROM_REG(val) (((val)&0x7f) << 1) | |
221 | ||
222 | static int DIV_TO_REG(int val) | |
223 | { | |
224 | int answer = 0; | |
b9e349f7 | 225 | while (answer < 7 && (val >>= 1)) |
1da177e4 LT |
226 | answer++; |
227 | return answer; | |
228 | } | |
229 | #define DIV_FROM_REG(val) (1 << (val)) | |
230 | ||
f8d0c19a JD |
231 | static const unsigned int pwm_freq[8] = { |
232 | 48000000 / 128, | |
233 | 24000000 / 128, | |
234 | 12000000 / 128, | |
235 | 8000000 / 128, | |
236 | 6000000 / 128, | |
237 | 3000000 / 128, | |
238 | 1500000 / 128, | |
239 | 750000 / 128, | |
240 | }; | |
241 | ||
1da177e4 | 242 | |
b74f3fdd | 243 | struct it87_sio_data { |
244 | enum chips type; | |
245 | /* Values read from Super-I/O config space */ | |
0475169c | 246 | u8 revision; |
b74f3fdd | 247 | u8 vid_value; |
895ff267 | 248 | u8 skip_vid; |
98dd22c3 JD |
249 | /* Values set based on DMI strings */ |
250 | u8 skip_pwm; | |
b74f3fdd | 251 | }; |
252 | ||
ed6bafbf JD |
253 | /* For each registered chip, we need to keep some data in memory. |
254 | The structure is dynamically allocated. */ | |
1da177e4 | 255 | struct it87_data { |
1beeffe4 | 256 | struct device *hwmon_dev; |
1da177e4 | 257 | enum chips type; |
0475169c | 258 | u8 revision; |
1da177e4 | 259 | |
b74f3fdd | 260 | unsigned short addr; |
261 | const char *name; | |
9a61bf63 | 262 | struct mutex update_lock; |
1da177e4 LT |
263 | char valid; /* !=0 if following fields are valid */ |
264 | unsigned long last_updated; /* In jiffies */ | |
265 | ||
266 | u8 in[9]; /* Register value */ | |
3543a53f JD |
267 | u8 in_max[8]; /* Register value */ |
268 | u8 in_min[8]; /* Register value */ | |
9060f8bd | 269 | u8 has_fan; /* Bitfield, fans enabled */ |
c7f1f716 JD |
270 | u16 fan[5]; /* Register values, possibly combined */ |
271 | u16 fan_min[5]; /* Register values, possibly combined */ | |
e267d250 JD |
272 | s8 temp[3]; /* Register value */ |
273 | s8 temp_high[3]; /* Register value */ | |
274 | s8 temp_low[3]; /* Register value */ | |
1da177e4 LT |
275 | u8 sensor; /* Register value */ |
276 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
277 | u8 vid; /* Register encoding, combined */ | |
a7be58a1 | 278 | u8 vrm; |
1da177e4 LT |
279 | u32 alarms; /* Register encoding, combined */ |
280 | u8 fan_main_ctrl; /* Register value */ | |
f8d0c19a | 281 | u8 fan_ctl; /* Register value */ |
1da177e4 LT |
282 | u8 manual_pwm_ctl[3]; /* manual PWM value set by user */ |
283 | }; | |
284 | ||
0475169c AP |
285 | static inline int has_16bit_fans(const struct it87_data *data) |
286 | { | |
816d8c6a | 287 | /* IT8705F Datasheet 0.4.1, 3h == Version G. |
859b9ef3 | 288 | IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J. |
816d8c6a AP |
289 | These are the first revisions with 16bit tachometer support. */ |
290 | return (data->type == it87 && data->revision >= 0x03) | |
859b9ef3 | 291 | || (data->type == it8712 && data->revision >= 0x08) |
0475169c | 292 | || data->type == it8716 |
b4da93e4 JMS |
293 | || data->type == it8718 |
294 | || data->type == it8720; | |
0475169c | 295 | } |
1da177e4 | 296 | |
b74f3fdd | 297 | static int it87_probe(struct platform_device *pdev); |
d0546128 | 298 | static int __devexit it87_remove(struct platform_device *pdev); |
1da177e4 | 299 | |
b74f3fdd | 300 | static int it87_read_value(struct it87_data *data, u8 reg); |
301 | static void it87_write_value(struct it87_data *data, u8 reg, u8 value); | |
1da177e4 | 302 | static struct it87_data *it87_update_device(struct device *dev); |
b74f3fdd | 303 | static int it87_check_pwm(struct device *dev); |
304 | static void it87_init_device(struct platform_device *pdev); | |
1da177e4 LT |
305 | |
306 | ||
b74f3fdd | 307 | static struct platform_driver it87_driver = { |
cdaf7934 | 308 | .driver = { |
87218842 | 309 | .owner = THIS_MODULE, |
b74f3fdd | 310 | .name = DRVNAME, |
cdaf7934 | 311 | }, |
b74f3fdd | 312 | .probe = it87_probe, |
313 | .remove = __devexit_p(it87_remove), | |
fde09509 JD |
314 | }; |
315 | ||
20ad93d4 JD |
316 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
317 | char *buf) | |
1da177e4 | 318 | { |
20ad93d4 JD |
319 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
320 | int nr = sensor_attr->index; | |
321 | ||
1da177e4 LT |
322 | struct it87_data *data = it87_update_device(dev); |
323 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); | |
324 | } | |
325 | ||
20ad93d4 JD |
326 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, |
327 | char *buf) | |
1da177e4 | 328 | { |
20ad93d4 JD |
329 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
330 | int nr = sensor_attr->index; | |
331 | ||
1da177e4 LT |
332 | struct it87_data *data = it87_update_device(dev); |
333 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); | |
334 | } | |
335 | ||
20ad93d4 JD |
336 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, |
337 | char *buf) | |
1da177e4 | 338 | { |
20ad93d4 JD |
339 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
340 | int nr = sensor_attr->index; | |
341 | ||
1da177e4 LT |
342 | struct it87_data *data = it87_update_device(dev); |
343 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); | |
344 | } | |
345 | ||
20ad93d4 JD |
346 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
347 | const char *buf, size_t count) | |
1da177e4 | 348 | { |
20ad93d4 JD |
349 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
350 | int nr = sensor_attr->index; | |
351 | ||
b74f3fdd | 352 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
353 | unsigned long val = simple_strtoul(buf, NULL, 10); |
354 | ||
9a61bf63 | 355 | mutex_lock(&data->update_lock); |
1da177e4 | 356 | data->in_min[nr] = IN_TO_REG(val); |
b74f3fdd | 357 | it87_write_value(data, IT87_REG_VIN_MIN(nr), |
1da177e4 | 358 | data->in_min[nr]); |
9a61bf63 | 359 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
360 | return count; |
361 | } | |
20ad93d4 JD |
362 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
363 | const char *buf, size_t count) | |
1da177e4 | 364 | { |
20ad93d4 JD |
365 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
366 | int nr = sensor_attr->index; | |
367 | ||
b74f3fdd | 368 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
369 | unsigned long val = simple_strtoul(buf, NULL, 10); |
370 | ||
9a61bf63 | 371 | mutex_lock(&data->update_lock); |
1da177e4 | 372 | data->in_max[nr] = IN_TO_REG(val); |
b74f3fdd | 373 | it87_write_value(data, IT87_REG_VIN_MAX(nr), |
1da177e4 | 374 | data->in_max[nr]); |
9a61bf63 | 375 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
376 | return count; |
377 | } | |
378 | ||
379 | #define show_in_offset(offset) \ | |
20ad93d4 JD |
380 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
381 | show_in, NULL, offset); | |
1da177e4 LT |
382 | |
383 | #define limit_in_offset(offset) \ | |
20ad93d4 JD |
384 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
385 | show_in_min, set_in_min, offset); \ | |
386 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
387 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
388 | |
389 | show_in_offset(0); | |
390 | limit_in_offset(0); | |
391 | show_in_offset(1); | |
392 | limit_in_offset(1); | |
393 | show_in_offset(2); | |
394 | limit_in_offset(2); | |
395 | show_in_offset(3); | |
396 | limit_in_offset(3); | |
397 | show_in_offset(4); | |
398 | limit_in_offset(4); | |
399 | show_in_offset(5); | |
400 | limit_in_offset(5); | |
401 | show_in_offset(6); | |
402 | limit_in_offset(6); | |
403 | show_in_offset(7); | |
404 | limit_in_offset(7); | |
405 | show_in_offset(8); | |
406 | ||
407 | /* 3 temperatures */ | |
20ad93d4 JD |
408 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
409 | char *buf) | |
1da177e4 | 410 | { |
20ad93d4 JD |
411 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
412 | int nr = sensor_attr->index; | |
413 | ||
1da177e4 LT |
414 | struct it87_data *data = it87_update_device(dev); |
415 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
416 | } | |
20ad93d4 JD |
417 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, |
418 | char *buf) | |
1da177e4 | 419 | { |
20ad93d4 JD |
420 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
421 | int nr = sensor_attr->index; | |
422 | ||
1da177e4 LT |
423 | struct it87_data *data = it87_update_device(dev); |
424 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); | |
425 | } | |
20ad93d4 JD |
426 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
427 | char *buf) | |
1da177e4 | 428 | { |
20ad93d4 JD |
429 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
430 | int nr = sensor_attr->index; | |
431 | ||
1da177e4 LT |
432 | struct it87_data *data = it87_update_device(dev); |
433 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); | |
434 | } | |
20ad93d4 JD |
435 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
436 | const char *buf, size_t count) | |
1da177e4 | 437 | { |
20ad93d4 JD |
438 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
439 | int nr = sensor_attr->index; | |
440 | ||
b74f3fdd | 441 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
442 | int val = simple_strtol(buf, NULL, 10); |
443 | ||
9a61bf63 | 444 | mutex_lock(&data->update_lock); |
1da177e4 | 445 | data->temp_high[nr] = TEMP_TO_REG(val); |
b74f3fdd | 446 | it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); |
9a61bf63 | 447 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
448 | return count; |
449 | } | |
20ad93d4 JD |
450 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
451 | const char *buf, size_t count) | |
1da177e4 | 452 | { |
20ad93d4 JD |
453 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
454 | int nr = sensor_attr->index; | |
455 | ||
b74f3fdd | 456 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
457 | int val = simple_strtol(buf, NULL, 10); |
458 | ||
9a61bf63 | 459 | mutex_lock(&data->update_lock); |
1da177e4 | 460 | data->temp_low[nr] = TEMP_TO_REG(val); |
b74f3fdd | 461 | it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); |
9a61bf63 | 462 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
463 | return count; |
464 | } | |
465 | #define show_temp_offset(offset) \ | |
20ad93d4 JD |
466 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
467 | show_temp, NULL, offset - 1); \ | |
468 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
469 | show_temp_max, set_temp_max, offset - 1); \ | |
470 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
471 | show_temp_min, set_temp_min, offset - 1); | |
1da177e4 LT |
472 | |
473 | show_temp_offset(1); | |
474 | show_temp_offset(2); | |
475 | show_temp_offset(3); | |
476 | ||
20ad93d4 JD |
477 | static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, |
478 | char *buf) | |
1da177e4 | 479 | { |
20ad93d4 JD |
480 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
481 | int nr = sensor_attr->index; | |
482 | ||
1da177e4 LT |
483 | struct it87_data *data = it87_update_device(dev); |
484 | u8 reg = data->sensor; /* In case the value is updated while we use it */ | |
485 | ||
486 | if (reg & (1 << nr)) | |
487 | return sprintf(buf, "3\n"); /* thermal diode */ | |
488 | if (reg & (8 << nr)) | |
4ed10779 | 489 | return sprintf(buf, "4\n"); /* thermistor */ |
1da177e4 LT |
490 | return sprintf(buf, "0\n"); /* disabled */ |
491 | } | |
20ad93d4 JD |
492 | static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, |
493 | const char *buf, size_t count) | |
1da177e4 | 494 | { |
20ad93d4 JD |
495 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
496 | int nr = sensor_attr->index; | |
497 | ||
b74f3fdd | 498 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
499 | int val = simple_strtol(buf, NULL, 10); |
500 | ||
9a61bf63 | 501 | mutex_lock(&data->update_lock); |
1da177e4 LT |
502 | |
503 | data->sensor &= ~(1 << nr); | |
504 | data->sensor &= ~(8 << nr); | |
4ed10779 JD |
505 | if (val == 2) { /* backwards compatibility */ |
506 | dev_warn(dev, "Sensor type 2 is deprecated, please use 4 " | |
507 | "instead\n"); | |
508 | val = 4; | |
509 | } | |
510 | /* 3 = thermal diode; 4 = thermistor; 0 = disabled */ | |
1da177e4 LT |
511 | if (val == 3) |
512 | data->sensor |= 1 << nr; | |
4ed10779 | 513 | else if (val == 4) |
1da177e4 LT |
514 | data->sensor |= 8 << nr; |
515 | else if (val != 0) { | |
9a61bf63 | 516 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
517 | return -EINVAL; |
518 | } | |
b74f3fdd | 519 | it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); |
9a61bf63 | 520 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
521 | return count; |
522 | } | |
523 | #define show_sensor_offset(offset) \ | |
20ad93d4 JD |
524 | static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ |
525 | show_sensor, set_sensor, offset - 1); | |
1da177e4 LT |
526 | |
527 | show_sensor_offset(1); | |
528 | show_sensor_offset(2); | |
529 | show_sensor_offset(3); | |
530 | ||
531 | /* 3 Fans */ | |
20ad93d4 JD |
532 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
533 | char *buf) | |
1da177e4 | 534 | { |
20ad93d4 JD |
535 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
536 | int nr = sensor_attr->index; | |
537 | ||
1da177e4 LT |
538 | struct it87_data *data = it87_update_device(dev); |
539 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr], | |
540 | DIV_FROM_REG(data->fan_div[nr]))); | |
541 | } | |
20ad93d4 JD |
542 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
543 | char *buf) | |
1da177e4 | 544 | { |
20ad93d4 JD |
545 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
546 | int nr = sensor_attr->index; | |
547 | ||
1da177e4 LT |
548 | struct it87_data *data = it87_update_device(dev); |
549 | return sprintf(buf,"%d\n", | |
550 | FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); | |
551 | } | |
20ad93d4 JD |
552 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
553 | char *buf) | |
1da177e4 | 554 | { |
20ad93d4 JD |
555 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
556 | int nr = sensor_attr->index; | |
557 | ||
1da177e4 LT |
558 | struct it87_data *data = it87_update_device(dev); |
559 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
560 | } | |
20ad93d4 JD |
561 | static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, |
562 | char *buf) | |
1da177e4 | 563 | { |
20ad93d4 JD |
564 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
565 | int nr = sensor_attr->index; | |
566 | ||
1da177e4 LT |
567 | struct it87_data *data = it87_update_device(dev); |
568 | return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0); | |
569 | } | |
20ad93d4 JD |
570 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
571 | char *buf) | |
1da177e4 | 572 | { |
20ad93d4 JD |
573 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
574 | int nr = sensor_attr->index; | |
575 | ||
1da177e4 LT |
576 | struct it87_data *data = it87_update_device(dev); |
577 | return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]); | |
578 | } | |
f8d0c19a JD |
579 | static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, |
580 | char *buf) | |
581 | { | |
582 | struct it87_data *data = it87_update_device(dev); | |
583 | int index = (data->fan_ctl >> 4) & 0x07; | |
584 | ||
585 | return sprintf(buf, "%u\n", pwm_freq[index]); | |
586 | } | |
20ad93d4 JD |
587 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
588 | const char *buf, size_t count) | |
1da177e4 | 589 | { |
20ad93d4 JD |
590 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
591 | int nr = sensor_attr->index; | |
592 | ||
b74f3fdd | 593 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 | 594 | int val = simple_strtol(buf, NULL, 10); |
7f999aa7 | 595 | u8 reg; |
1da177e4 | 596 | |
9a61bf63 | 597 | mutex_lock(&data->update_lock); |
b74f3fdd | 598 | reg = it87_read_value(data, IT87_REG_FAN_DIV); |
07eab46d JD |
599 | switch (nr) { |
600 | case 0: data->fan_div[nr] = reg & 0x07; break; | |
601 | case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break; | |
602 | case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break; | |
603 | } | |
604 | ||
1da177e4 | 605 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
c7f1f716 | 606 | it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); |
9a61bf63 | 607 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
608 | return count; |
609 | } | |
20ad93d4 JD |
610 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
611 | const char *buf, size_t count) | |
1da177e4 | 612 | { |
20ad93d4 JD |
613 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
614 | int nr = sensor_attr->index; | |
615 | ||
b74f3fdd | 616 | struct it87_data *data = dev_get_drvdata(dev); |
b9e349f7 | 617 | unsigned long val = simple_strtoul(buf, NULL, 10); |
8ab4ec3e | 618 | int min; |
1da177e4 LT |
619 | u8 old; |
620 | ||
9a61bf63 | 621 | mutex_lock(&data->update_lock); |
b74f3fdd | 622 | old = it87_read_value(data, IT87_REG_FAN_DIV); |
1da177e4 | 623 | |
8ab4ec3e JD |
624 | /* Save fan min limit */ |
625 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); | |
1da177e4 LT |
626 | |
627 | switch (nr) { | |
628 | case 0: | |
629 | case 1: | |
630 | data->fan_div[nr] = DIV_TO_REG(val); | |
631 | break; | |
632 | case 2: | |
633 | if (val < 8) | |
634 | data->fan_div[nr] = 1; | |
635 | else | |
636 | data->fan_div[nr] = 3; | |
637 | } | |
638 | val = old & 0x80; | |
639 | val |= (data->fan_div[0] & 0x07); | |
640 | val |= (data->fan_div[1] & 0x07) << 3; | |
641 | if (data->fan_div[2] == 3) | |
642 | val |= 0x1 << 6; | |
b74f3fdd | 643 | it87_write_value(data, IT87_REG_FAN_DIV, val); |
1da177e4 | 644 | |
8ab4ec3e JD |
645 | /* Restore fan min limit */ |
646 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
c7f1f716 | 647 | it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); |
8ab4ec3e | 648 | |
9a61bf63 | 649 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
650 | return count; |
651 | } | |
20ad93d4 JD |
652 | static ssize_t set_pwm_enable(struct device *dev, |
653 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 654 | { |
20ad93d4 JD |
655 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
656 | int nr = sensor_attr->index; | |
657 | ||
b74f3fdd | 658 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
659 | int val = simple_strtol(buf, NULL, 10); |
660 | ||
9a61bf63 | 661 | mutex_lock(&data->update_lock); |
1da177e4 LT |
662 | |
663 | if (val == 0) { | |
664 | int tmp; | |
665 | /* make sure the fan is on when in on/off mode */ | |
b74f3fdd | 666 | tmp = it87_read_value(data, IT87_REG_FAN_CTL); |
667 | it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr)); | |
1da177e4 LT |
668 | /* set on/off mode */ |
669 | data->fan_main_ctrl &= ~(1 << nr); | |
b74f3fdd | 670 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 LT |
671 | } else if (val == 1) { |
672 | /* set SmartGuardian mode */ | |
673 | data->fan_main_ctrl |= (1 << nr); | |
b74f3fdd | 674 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 | 675 | /* set saved pwm value, clear FAN_CTLX PWM mode bit */ |
b74f3fdd | 676 | it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); |
1da177e4 | 677 | } else { |
9a61bf63 | 678 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
679 | return -EINVAL; |
680 | } | |
681 | ||
9a61bf63 | 682 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
683 | return count; |
684 | } | |
20ad93d4 JD |
685 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
686 | const char *buf, size_t count) | |
1da177e4 | 687 | { |
20ad93d4 JD |
688 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
689 | int nr = sensor_attr->index; | |
690 | ||
b74f3fdd | 691 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
692 | int val = simple_strtol(buf, NULL, 10); |
693 | ||
694 | if (val < 0 || val > 255) | |
695 | return -EINVAL; | |
696 | ||
9a61bf63 | 697 | mutex_lock(&data->update_lock); |
1da177e4 LT |
698 | data->manual_pwm_ctl[nr] = val; |
699 | if (data->fan_main_ctrl & (1 << nr)) | |
b74f3fdd | 700 | it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); |
9a61bf63 | 701 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
702 | return count; |
703 | } | |
f8d0c19a JD |
704 | static ssize_t set_pwm_freq(struct device *dev, |
705 | struct device_attribute *attr, const char *buf, size_t count) | |
706 | { | |
b74f3fdd | 707 | struct it87_data *data = dev_get_drvdata(dev); |
f8d0c19a JD |
708 | unsigned long val = simple_strtoul(buf, NULL, 10); |
709 | int i; | |
710 | ||
711 | /* Search for the nearest available frequency */ | |
712 | for (i = 0; i < 7; i++) { | |
713 | if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2) | |
714 | break; | |
715 | } | |
716 | ||
717 | mutex_lock(&data->update_lock); | |
b74f3fdd | 718 | data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f; |
f8d0c19a | 719 | data->fan_ctl |= i << 4; |
b74f3fdd | 720 | it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl); |
f8d0c19a JD |
721 | mutex_unlock(&data->update_lock); |
722 | ||
723 | return count; | |
724 | } | |
1da177e4 | 725 | |
20ad93d4 JD |
726 | #define show_fan_offset(offset) \ |
727 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
728 | show_fan, NULL, offset - 1); \ | |
729 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
730 | show_fan_min, set_fan_min, offset - 1); \ | |
731 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
732 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
733 | |
734 | show_fan_offset(1); | |
735 | show_fan_offset(2); | |
736 | show_fan_offset(3); | |
737 | ||
738 | #define show_pwm_offset(offset) \ | |
20ad93d4 JD |
739 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
740 | show_pwm_enable, set_pwm_enable, offset - 1); \ | |
741 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ | |
f8d0c19a JD |
742 | show_pwm, set_pwm, offset - 1); \ |
743 | static DEVICE_ATTR(pwm##offset##_freq, \ | |
744 | (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \ | |
745 | show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); | |
1da177e4 LT |
746 | |
747 | show_pwm_offset(1); | |
748 | show_pwm_offset(2); | |
749 | show_pwm_offset(3); | |
750 | ||
17d648bf JD |
751 | /* A different set of callbacks for 16-bit fans */ |
752 | static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, | |
753 | char *buf) | |
754 | { | |
755 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
756 | int nr = sensor_attr->index; | |
757 | struct it87_data *data = it87_update_device(dev); | |
758 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); | |
759 | } | |
760 | ||
761 | static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, | |
762 | char *buf) | |
763 | { | |
764 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
765 | int nr = sensor_attr->index; | |
766 | struct it87_data *data = it87_update_device(dev); | |
767 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); | |
768 | } | |
769 | ||
770 | static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, | |
771 | const char *buf, size_t count) | |
772 | { | |
773 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
774 | int nr = sensor_attr->index; | |
b74f3fdd | 775 | struct it87_data *data = dev_get_drvdata(dev); |
17d648bf JD |
776 | int val = simple_strtol(buf, NULL, 10); |
777 | ||
778 | mutex_lock(&data->update_lock); | |
779 | data->fan_min[nr] = FAN16_TO_REG(val); | |
c7f1f716 | 780 | it87_write_value(data, IT87_REG_FAN_MIN[nr], |
17d648bf | 781 | data->fan_min[nr] & 0xff); |
c7f1f716 | 782 | it87_write_value(data, IT87_REG_FANX_MIN[nr], |
17d648bf JD |
783 | data->fan_min[nr] >> 8); |
784 | mutex_unlock(&data->update_lock); | |
785 | return count; | |
786 | } | |
787 | ||
788 | /* We want to use the same sysfs file names as 8-bit fans, but we need | |
789 | different variable names, so we have to use SENSOR_ATTR instead of | |
790 | SENSOR_DEVICE_ATTR. */ | |
791 | #define show_fan16_offset(offset) \ | |
792 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ | |
793 | = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ | |
794 | show_fan16, NULL, offset - 1); \ | |
795 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ | |
796 | = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
797 | show_fan16_min, set_fan16_min, offset - 1) | |
798 | ||
799 | show_fan16_offset(1); | |
800 | show_fan16_offset(2); | |
801 | show_fan16_offset(3); | |
c7f1f716 JD |
802 | show_fan16_offset(4); |
803 | show_fan16_offset(5); | |
17d648bf | 804 | |
1da177e4 | 805 | /* Alarms */ |
30f74292 | 806 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
807 | { |
808 | struct it87_data *data = it87_update_device(dev); | |
68188ba7 | 809 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 | 810 | } |
1d66c64c | 811 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4 | 812 | |
0124dd78 JD |
813 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
814 | char *buf) | |
815 | { | |
816 | int bitnr = to_sensor_dev_attr(attr)->index; | |
817 | struct it87_data *data = it87_update_device(dev); | |
818 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
819 | } | |
820 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8); | |
821 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9); | |
822 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10); | |
823 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11); | |
824 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12); | |
825 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13); | |
826 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14); | |
827 | static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15); | |
828 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0); | |
829 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1); | |
830 | static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2); | |
831 | static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3); | |
832 | static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6); | |
833 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16); | |
834 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17); | |
835 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18); | |
836 | ||
1da177e4 | 837 | static ssize_t |
30f74292 | 838 | show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 839 | { |
90d6619a | 840 | struct it87_data *data = dev_get_drvdata(dev); |
a7be58a1 | 841 | return sprintf(buf, "%u\n", data->vrm); |
1da177e4 LT |
842 | } |
843 | static ssize_t | |
30f74292 | 844 | store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 | 845 | { |
b74f3fdd | 846 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
847 | u32 val; |
848 | ||
849 | val = simple_strtoul(buf, NULL, 10); | |
850 | data->vrm = val; | |
851 | ||
852 | return count; | |
853 | } | |
854 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
1da177e4 LT |
855 | |
856 | static ssize_t | |
30f74292 | 857 | show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
858 | { |
859 | struct it87_data *data = it87_update_device(dev); | |
860 | return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); | |
861 | } | |
862 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
87808be4 | 863 | |
b74f3fdd | 864 | static ssize_t show_name(struct device *dev, struct device_attribute |
865 | *devattr, char *buf) | |
866 | { | |
867 | struct it87_data *data = dev_get_drvdata(dev); | |
868 | return sprintf(buf, "%s\n", data->name); | |
869 | } | |
870 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
871 | ||
87808be4 JD |
872 | static struct attribute *it87_attributes[] = { |
873 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
874 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
875 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
876 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
877 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
878 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
879 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
880 | &sensor_dev_attr_in7_input.dev_attr.attr, | |
881 | &sensor_dev_attr_in8_input.dev_attr.attr, | |
882 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
883 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
884 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
885 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
886 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
887 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
888 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
889 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
890 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
891 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
892 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
893 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
894 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
895 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
896 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
897 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
0124dd78 JD |
898 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
899 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
900 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
901 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
902 | &sensor_dev_attr_in4_alarm.dev_attr.attr, | |
903 | &sensor_dev_attr_in5_alarm.dev_attr.attr, | |
904 | &sensor_dev_attr_in6_alarm.dev_attr.attr, | |
905 | &sensor_dev_attr_in7_alarm.dev_attr.attr, | |
87808be4 JD |
906 | |
907 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
908 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
909 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
910 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
911 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
912 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
913 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
914 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
915 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
916 | &sensor_dev_attr_temp1_type.dev_attr.attr, | |
917 | &sensor_dev_attr_temp2_type.dev_attr.attr, | |
918 | &sensor_dev_attr_temp3_type.dev_attr.attr, | |
0124dd78 JD |
919 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
920 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
921 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
87808be4 JD |
922 | |
923 | &dev_attr_alarms.attr, | |
b74f3fdd | 924 | &dev_attr_name.attr, |
87808be4 JD |
925 | NULL |
926 | }; | |
927 | ||
928 | static const struct attribute_group it87_group = { | |
929 | .attrs = it87_attributes, | |
930 | }; | |
931 | ||
932 | static struct attribute *it87_attributes_opt[] = { | |
933 | &sensor_dev_attr_fan1_input16.dev_attr.attr, | |
934 | &sensor_dev_attr_fan1_min16.dev_attr.attr, | |
935 | &sensor_dev_attr_fan2_input16.dev_attr.attr, | |
936 | &sensor_dev_attr_fan2_min16.dev_attr.attr, | |
937 | &sensor_dev_attr_fan3_input16.dev_attr.attr, | |
938 | &sensor_dev_attr_fan3_min16.dev_attr.attr, | |
c7f1f716 JD |
939 | &sensor_dev_attr_fan4_input16.dev_attr.attr, |
940 | &sensor_dev_attr_fan4_min16.dev_attr.attr, | |
941 | &sensor_dev_attr_fan5_input16.dev_attr.attr, | |
942 | &sensor_dev_attr_fan5_min16.dev_attr.attr, | |
87808be4 JD |
943 | |
944 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
945 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
946 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
947 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
948 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
949 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
950 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
951 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
952 | &sensor_dev_attr_fan3_div.dev_attr.attr, | |
953 | ||
0124dd78 JD |
954 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
955 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
956 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, | |
957 | &sensor_dev_attr_fan4_alarm.dev_attr.attr, | |
958 | &sensor_dev_attr_fan5_alarm.dev_attr.attr, | |
959 | ||
87808be4 JD |
960 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
961 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
962 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
963 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
964 | &sensor_dev_attr_pwm2.dev_attr.attr, | |
965 | &sensor_dev_attr_pwm3.dev_attr.attr, | |
d5b0b5d6 JD |
966 | &dev_attr_pwm1_freq.attr, |
967 | &dev_attr_pwm2_freq.attr, | |
968 | &dev_attr_pwm3_freq.attr, | |
87808be4 JD |
969 | |
970 | &dev_attr_vrm.attr, | |
971 | &dev_attr_cpu0_vid.attr, | |
972 | NULL | |
973 | }; | |
974 | ||
975 | static const struct attribute_group it87_group_opt = { | |
976 | .attrs = it87_attributes_opt, | |
977 | }; | |
1da177e4 | 978 | |
2d8672c5 | 979 | /* SuperIO detection - will change isa_address if a chip is found */ |
b74f3fdd | 980 | static int __init it87_find(unsigned short *address, |
981 | struct it87_sio_data *sio_data) | |
1da177e4 LT |
982 | { |
983 | int err = -ENODEV; | |
b74f3fdd | 984 | u16 chip_type; |
98dd22c3 | 985 | const char *board_vendor, *board_name; |
1da177e4 LT |
986 | |
987 | superio_enter(); | |
67b671bc | 988 | chip_type = force_id ? force_id : superio_inw(DEVID); |
b74f3fdd | 989 | |
990 | switch (chip_type) { | |
991 | case IT8705F_DEVID: | |
992 | sio_data->type = it87; | |
993 | break; | |
994 | case IT8712F_DEVID: | |
995 | sio_data->type = it8712; | |
996 | break; | |
997 | case IT8716F_DEVID: | |
998 | case IT8726F_DEVID: | |
999 | sio_data->type = it8716; | |
1000 | break; | |
1001 | case IT8718F_DEVID: | |
1002 | sio_data->type = it8718; | |
1003 | break; | |
b4da93e4 JMS |
1004 | case IT8720F_DEVID: |
1005 | sio_data->type = it8720; | |
1006 | break; | |
b74f3fdd | 1007 | case 0xffff: /* No device at all */ |
1008 | goto exit; | |
1009 | default: | |
1010 | pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n", | |
1011 | chip_type); | |
1012 | goto exit; | |
1013 | } | |
1da177e4 | 1014 | |
87673dd7 | 1015 | superio_select(PME); |
1da177e4 LT |
1016 | if (!(superio_inb(IT87_ACT_REG) & 0x01)) { |
1017 | pr_info("it87: Device not activated, skipping\n"); | |
1018 | goto exit; | |
1019 | } | |
1020 | ||
1021 | *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); | |
1022 | if (*address == 0) { | |
1023 | pr_info("it87: Base address not set, skipping\n"); | |
1024 | goto exit; | |
1025 | } | |
1026 | ||
1027 | err = 0; | |
0475169c | 1028 | sio_data->revision = superio_inb(DEVREV) & 0x0f; |
1da177e4 | 1029 | pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", |
0475169c | 1030 | chip_type, *address, sio_data->revision); |
1da177e4 | 1031 | |
87673dd7 | 1032 | /* Read GPIO config and VID value from LDN 7 (GPIO) */ |
895ff267 JD |
1033 | if (sio_data->type == it87) { |
1034 | /* The IT8705F doesn't have VID pins at all */ | |
1035 | sio_data->skip_vid = 1; | |
1036 | } else { | |
87673dd7 JD |
1037 | int reg; |
1038 | ||
1039 | superio_select(GPIO); | |
895ff267 JD |
1040 | /* We need at least 4 VID pins */ |
1041 | reg = superio_inb(IT87_SIO_GPIO3_REG); | |
1042 | if (reg & 0x0f) { | |
1043 | pr_info("it87: VID is disabled (pins used for GPIO)\n"); | |
1044 | sio_data->skip_vid = 1; | |
1045 | } | |
1046 | ||
1047 | if ((sio_data->type == it8718 || sio_data->type == it8720) | |
1048 | && !(sio_data->skip_vid)) | |
b74f3fdd | 1049 | sio_data->vid_value = superio_inb(IT87_SIO_VID_REG); |
87673dd7 JD |
1050 | |
1051 | reg = superio_inb(IT87_SIO_PINX2_REG); | |
1052 | if (reg & (1 << 0)) | |
1053 | pr_info("it87: in3 is VCC (+5V)\n"); | |
1054 | if (reg & (1 << 1)) | |
1055 | pr_info("it87: in7 is VCCH (+5V Stand-By)\n"); | |
1056 | } | |
1057 | ||
98dd22c3 JD |
1058 | /* Disable specific features based on DMI strings */ |
1059 | board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR); | |
1060 | board_name = dmi_get_system_info(DMI_BOARD_NAME); | |
1061 | if (board_vendor && board_name) { | |
1062 | if (strcmp(board_vendor, "nVIDIA") == 0 | |
1063 | && strcmp(board_name, "FN68PT") == 0) { | |
1064 | /* On the Shuttle SN68PT, FAN_CTL2 is apparently not | |
1065 | connected to a fan, but to something else. One user | |
1066 | has reported instant system power-off when changing | |
1067 | the PWM2 duty cycle, so we disable it. | |
1068 | I use the board name string as the trigger in case | |
1069 | the same board is ever used in other systems. */ | |
1070 | pr_info("it87: Disabling pwm2 due to " | |
1071 | "hardware constraints\n"); | |
1072 | sio_data->skip_pwm = (1 << 1); | |
1073 | } | |
1074 | } | |
1075 | ||
1da177e4 LT |
1076 | exit: |
1077 | superio_exit(); | |
1078 | return err; | |
1079 | } | |
1080 | ||
b74f3fdd | 1081 | static int __devinit it87_probe(struct platform_device *pdev) |
1da177e4 | 1082 | { |
1da177e4 | 1083 | struct it87_data *data; |
b74f3fdd | 1084 | struct resource *res; |
1085 | struct device *dev = &pdev->dev; | |
1086 | struct it87_sio_data *sio_data = dev->platform_data; | |
1da177e4 | 1087 | int err = 0; |
1da177e4 | 1088 | int enable_pwm_interface; |
b74f3fdd | 1089 | static const char *names[] = { |
1090 | "it87", | |
1091 | "it8712", | |
1092 | "it8716", | |
1093 | "it8718", | |
b4da93e4 | 1094 | "it8720", |
b74f3fdd | 1095 | }; |
1096 | ||
1097 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); | |
87b4b663 | 1098 | if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) { |
b74f3fdd | 1099 | dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", |
1100 | (unsigned long)res->start, | |
87b4b663 | 1101 | (unsigned long)(res->start + IT87_EC_EXTENT - 1)); |
8e9afcbb JD |
1102 | err = -EBUSY; |
1103 | goto ERROR0; | |
1104 | } | |
1da177e4 | 1105 | |
ba9c2e8d | 1106 | if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { |
1da177e4 LT |
1107 | err = -ENOMEM; |
1108 | goto ERROR1; | |
1109 | } | |
1da177e4 | 1110 | |
b74f3fdd | 1111 | data->addr = res->start; |
1112 | data->type = sio_data->type; | |
0475169c | 1113 | data->revision = sio_data->revision; |
b74f3fdd | 1114 | data->name = names[sio_data->type]; |
1da177e4 LT |
1115 | |
1116 | /* Now, we do the remaining detection. */ | |
b74f3fdd | 1117 | if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) |
1118 | || it87_read_value(data, IT87_REG_CHIPID) != 0x90) { | |
8e9afcbb JD |
1119 | err = -ENODEV; |
1120 | goto ERROR2; | |
1da177e4 LT |
1121 | } |
1122 | ||
b74f3fdd | 1123 | platform_set_drvdata(pdev, data); |
1da177e4 | 1124 | |
9a61bf63 | 1125 | mutex_init(&data->update_lock); |
1da177e4 | 1126 | |
1da177e4 | 1127 | /* Check PWM configuration */ |
b74f3fdd | 1128 | enable_pwm_interface = it87_check_pwm(dev); |
1da177e4 LT |
1129 | |
1130 | /* Initialize the IT87 chip */ | |
b74f3fdd | 1131 | it87_init_device(pdev); |
1da177e4 LT |
1132 | |
1133 | /* Register sysfs hooks */ | |
b74f3fdd | 1134 | if ((err = sysfs_create_group(&dev->kobj, &it87_group))) |
1135 | goto ERROR2; | |
17d648bf | 1136 | |
9060f8bd | 1137 | /* Do not create fan files for disabled fans */ |
0475169c | 1138 | if (has_16bit_fans(data)) { |
87673dd7 | 1139 | /* 16-bit tachometers */ |
9060f8bd | 1140 | if (data->has_fan & (1 << 0)) { |
b74f3fdd | 1141 | if ((err = device_create_file(dev, |
87808be4 | 1142 | &sensor_dev_attr_fan1_input16.dev_attr)) |
b74f3fdd | 1143 | || (err = device_create_file(dev, |
0124dd78 JD |
1144 | &sensor_dev_attr_fan1_min16.dev_attr)) |
1145 | || (err = device_create_file(dev, | |
1146 | &sensor_dev_attr_fan1_alarm.dev_attr))) | |
87808be4 | 1147 | goto ERROR4; |
9060f8bd JD |
1148 | } |
1149 | if (data->has_fan & (1 << 1)) { | |
b74f3fdd | 1150 | if ((err = device_create_file(dev, |
87808be4 | 1151 | &sensor_dev_attr_fan2_input16.dev_attr)) |
b74f3fdd | 1152 | || (err = device_create_file(dev, |
0124dd78 JD |
1153 | &sensor_dev_attr_fan2_min16.dev_attr)) |
1154 | || (err = device_create_file(dev, | |
1155 | &sensor_dev_attr_fan2_alarm.dev_attr))) | |
87808be4 | 1156 | goto ERROR4; |
9060f8bd JD |
1157 | } |
1158 | if (data->has_fan & (1 << 2)) { | |
b74f3fdd | 1159 | if ((err = device_create_file(dev, |
87808be4 | 1160 | &sensor_dev_attr_fan3_input16.dev_attr)) |
b74f3fdd | 1161 | || (err = device_create_file(dev, |
0124dd78 JD |
1162 | &sensor_dev_attr_fan3_min16.dev_attr)) |
1163 | || (err = device_create_file(dev, | |
1164 | &sensor_dev_attr_fan3_alarm.dev_attr))) | |
87808be4 | 1165 | goto ERROR4; |
9060f8bd | 1166 | } |
c7f1f716 JD |
1167 | if (data->has_fan & (1 << 3)) { |
1168 | if ((err = device_create_file(dev, | |
1169 | &sensor_dev_attr_fan4_input16.dev_attr)) | |
1170 | || (err = device_create_file(dev, | |
0124dd78 JD |
1171 | &sensor_dev_attr_fan4_min16.dev_attr)) |
1172 | || (err = device_create_file(dev, | |
1173 | &sensor_dev_attr_fan4_alarm.dev_attr))) | |
c7f1f716 JD |
1174 | goto ERROR4; |
1175 | } | |
1176 | if (data->has_fan & (1 << 4)) { | |
1177 | if ((err = device_create_file(dev, | |
1178 | &sensor_dev_attr_fan5_input16.dev_attr)) | |
1179 | || (err = device_create_file(dev, | |
0124dd78 JD |
1180 | &sensor_dev_attr_fan5_min16.dev_attr)) |
1181 | || (err = device_create_file(dev, | |
1182 | &sensor_dev_attr_fan5_alarm.dev_attr))) | |
c7f1f716 JD |
1183 | goto ERROR4; |
1184 | } | |
17d648bf | 1185 | } else { |
87673dd7 | 1186 | /* 8-bit tachometers with clock divider */ |
9060f8bd | 1187 | if (data->has_fan & (1 << 0)) { |
b74f3fdd | 1188 | if ((err = device_create_file(dev, |
87808be4 | 1189 | &sensor_dev_attr_fan1_input.dev_attr)) |
b74f3fdd | 1190 | || (err = device_create_file(dev, |
87808be4 | 1191 | &sensor_dev_attr_fan1_min.dev_attr)) |
b74f3fdd | 1192 | || (err = device_create_file(dev, |
0124dd78 JD |
1193 | &sensor_dev_attr_fan1_div.dev_attr)) |
1194 | || (err = device_create_file(dev, | |
1195 | &sensor_dev_attr_fan1_alarm.dev_attr))) | |
87808be4 | 1196 | goto ERROR4; |
9060f8bd JD |
1197 | } |
1198 | if (data->has_fan & (1 << 1)) { | |
b74f3fdd | 1199 | if ((err = device_create_file(dev, |
87808be4 | 1200 | &sensor_dev_attr_fan2_input.dev_attr)) |
b74f3fdd | 1201 | || (err = device_create_file(dev, |
87808be4 | 1202 | &sensor_dev_attr_fan2_min.dev_attr)) |
b74f3fdd | 1203 | || (err = device_create_file(dev, |
0124dd78 JD |
1204 | &sensor_dev_attr_fan2_div.dev_attr)) |
1205 | || (err = device_create_file(dev, | |
1206 | &sensor_dev_attr_fan2_alarm.dev_attr))) | |
87808be4 | 1207 | goto ERROR4; |
9060f8bd JD |
1208 | } |
1209 | if (data->has_fan & (1 << 2)) { | |
b74f3fdd | 1210 | if ((err = device_create_file(dev, |
87808be4 | 1211 | &sensor_dev_attr_fan3_input.dev_attr)) |
b74f3fdd | 1212 | || (err = device_create_file(dev, |
87808be4 | 1213 | &sensor_dev_attr_fan3_min.dev_attr)) |
b74f3fdd | 1214 | || (err = device_create_file(dev, |
0124dd78 JD |
1215 | &sensor_dev_attr_fan3_div.dev_attr)) |
1216 | || (err = device_create_file(dev, | |
1217 | &sensor_dev_attr_fan3_alarm.dev_attr))) | |
87808be4 | 1218 | goto ERROR4; |
9060f8bd | 1219 | } |
17d648bf JD |
1220 | } |
1221 | ||
1da177e4 | 1222 | if (enable_pwm_interface) { |
98dd22c3 JD |
1223 | if (!(sio_data->skip_pwm & (1 << 0))) { |
1224 | if ((err = device_create_file(dev, | |
1225 | &sensor_dev_attr_pwm1_enable.dev_attr)) | |
1226 | || (err = device_create_file(dev, | |
1227 | &sensor_dev_attr_pwm1.dev_attr)) | |
1228 | || (err = device_create_file(dev, | |
1229 | &dev_attr_pwm1_freq))) | |
1230 | goto ERROR4; | |
1231 | } | |
1232 | if (!(sio_data->skip_pwm & (1 << 1))) { | |
1233 | if ((err = device_create_file(dev, | |
1234 | &sensor_dev_attr_pwm2_enable.dev_attr)) | |
1235 | || (err = device_create_file(dev, | |
1236 | &sensor_dev_attr_pwm2.dev_attr)) | |
1237 | || (err = device_create_file(dev, | |
1238 | &dev_attr_pwm2_freq))) | |
1239 | goto ERROR4; | |
1240 | } | |
1241 | if (!(sio_data->skip_pwm & (1 << 2))) { | |
1242 | if ((err = device_create_file(dev, | |
1243 | &sensor_dev_attr_pwm3_enable.dev_attr)) | |
1244 | || (err = device_create_file(dev, | |
1245 | &sensor_dev_attr_pwm3.dev_attr)) | |
1246 | || (err = device_create_file(dev, | |
1247 | &dev_attr_pwm3_freq))) | |
1248 | goto ERROR4; | |
1249 | } | |
1da177e4 LT |
1250 | } |
1251 | ||
895ff267 | 1252 | if (!sio_data->skip_vid) { |
303760b4 | 1253 | data->vrm = vid_which_vrm(); |
87673dd7 | 1254 | /* VID reading from Super-I/O config space if available */ |
b74f3fdd | 1255 | data->vid = sio_data->vid_value; |
1256 | if ((err = device_create_file(dev, | |
87808be4 | 1257 | &dev_attr_vrm)) |
b74f3fdd | 1258 | || (err = device_create_file(dev, |
87808be4 JD |
1259 | &dev_attr_cpu0_vid))) |
1260 | goto ERROR4; | |
1261 | } | |
1262 | ||
1beeffe4 TJ |
1263 | data->hwmon_dev = hwmon_device_register(dev); |
1264 | if (IS_ERR(data->hwmon_dev)) { | |
1265 | err = PTR_ERR(data->hwmon_dev); | |
87808be4 | 1266 | goto ERROR4; |
1da177e4 LT |
1267 | } |
1268 | ||
1269 | return 0; | |
1270 | ||
87808be4 | 1271 | ERROR4: |
b74f3fdd | 1272 | sysfs_remove_group(&dev->kobj, &it87_group); |
1273 | sysfs_remove_group(&dev->kobj, &it87_group_opt); | |
1da177e4 | 1274 | ERROR2: |
b74f3fdd | 1275 | platform_set_drvdata(pdev, NULL); |
1da177e4 LT |
1276 | kfree(data); |
1277 | ERROR1: | |
87b4b663 | 1278 | release_region(res->start, IT87_EC_EXTENT); |
1da177e4 LT |
1279 | ERROR0: |
1280 | return err; | |
1281 | } | |
1282 | ||
b74f3fdd | 1283 | static int __devexit it87_remove(struct platform_device *pdev) |
1da177e4 | 1284 | { |
b74f3fdd | 1285 | struct it87_data *data = platform_get_drvdata(pdev); |
1da177e4 | 1286 | |
1beeffe4 | 1287 | hwmon_device_unregister(data->hwmon_dev); |
b74f3fdd | 1288 | sysfs_remove_group(&pdev->dev.kobj, &it87_group); |
1289 | sysfs_remove_group(&pdev->dev.kobj, &it87_group_opt); | |
943b0830 | 1290 | |
87b4b663 | 1291 | release_region(data->addr, IT87_EC_EXTENT); |
b74f3fdd | 1292 | platform_set_drvdata(pdev, NULL); |
943b0830 | 1293 | kfree(data); |
1da177e4 LT |
1294 | |
1295 | return 0; | |
1296 | } | |
1297 | ||
7f999aa7 | 1298 | /* Must be called with data->update_lock held, except during initialization. |
1da177e4 LT |
1299 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1300 | would slow down the IT87 access and should not be necessary. */ | |
b74f3fdd | 1301 | static int it87_read_value(struct it87_data *data, u8 reg) |
1da177e4 | 1302 | { |
b74f3fdd | 1303 | outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); |
1304 | return inb_p(data->addr + IT87_DATA_REG_OFFSET); | |
1da177e4 LT |
1305 | } |
1306 | ||
7f999aa7 | 1307 | /* Must be called with data->update_lock held, except during initialization. |
1da177e4 LT |
1308 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1309 | would slow down the IT87 access and should not be necessary. */ | |
b74f3fdd | 1310 | static void it87_write_value(struct it87_data *data, u8 reg, u8 value) |
1da177e4 | 1311 | { |
b74f3fdd | 1312 | outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); |
1313 | outb_p(value, data->addr + IT87_DATA_REG_OFFSET); | |
1da177e4 LT |
1314 | } |
1315 | ||
1316 | /* Return 1 if and only if the PWM interface is safe to use */ | |
b74f3fdd | 1317 | static int __devinit it87_check_pwm(struct device *dev) |
1da177e4 | 1318 | { |
b74f3fdd | 1319 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
1320 | /* Some BIOSes fail to correctly configure the IT87 fans. All fans off |
1321 | * and polarity set to active low is sign that this is the case so we | |
1322 | * disable pwm control to protect the user. */ | |
b74f3fdd | 1323 | int tmp = it87_read_value(data, IT87_REG_FAN_CTL); |
1da177e4 LT |
1324 | if ((tmp & 0x87) == 0) { |
1325 | if (fix_pwm_polarity) { | |
1326 | /* The user asks us to attempt a chip reconfiguration. | |
1327 | * This means switching to active high polarity and | |
1328 | * inverting all fan speed values. */ | |
1329 | int i; | |
1330 | u8 pwm[3]; | |
1331 | ||
1332 | for (i = 0; i < 3; i++) | |
b74f3fdd | 1333 | pwm[i] = it87_read_value(data, |
1da177e4 LT |
1334 | IT87_REG_PWM(i)); |
1335 | ||
1336 | /* If any fan is in automatic pwm mode, the polarity | |
1337 | * might be correct, as suspicious as it seems, so we | |
1338 | * better don't change anything (but still disable the | |
1339 | * PWM interface). */ | |
1340 | if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { | |
b74f3fdd | 1341 | dev_info(dev, "Reconfiguring PWM to " |
1da177e4 | 1342 | "active high polarity\n"); |
b74f3fdd | 1343 | it87_write_value(data, IT87_REG_FAN_CTL, |
1da177e4 LT |
1344 | tmp | 0x87); |
1345 | for (i = 0; i < 3; i++) | |
b74f3fdd | 1346 | it87_write_value(data, |
1da177e4 LT |
1347 | IT87_REG_PWM(i), |
1348 | 0x7f & ~pwm[i]); | |
1349 | return 1; | |
1350 | } | |
1351 | ||
b74f3fdd | 1352 | dev_info(dev, "PWM configuration is " |
1da177e4 LT |
1353 | "too broken to be fixed\n"); |
1354 | } | |
1355 | ||
b74f3fdd | 1356 | dev_info(dev, "Detected broken BIOS " |
1da177e4 LT |
1357 | "defaults, disabling PWM interface\n"); |
1358 | return 0; | |
1359 | } else if (fix_pwm_polarity) { | |
b74f3fdd | 1360 | dev_info(dev, "PWM configuration looks " |
1da177e4 LT |
1361 | "sane, won't touch\n"); |
1362 | } | |
1363 | ||
1364 | return 1; | |
1365 | } | |
1366 | ||
1367 | /* Called when we have found a new IT87. */ | |
b74f3fdd | 1368 | static void __devinit it87_init_device(struct platform_device *pdev) |
1da177e4 | 1369 | { |
b74f3fdd | 1370 | struct it87_data *data = platform_get_drvdata(pdev); |
1da177e4 LT |
1371 | int tmp, i; |
1372 | ||
1373 | /* initialize to sane defaults: | |
1374 | * - if the chip is in manual pwm mode, this will be overwritten with | |
1375 | * the actual settings on the chip (so in this case, initialization | |
1376 | * is not needed) | |
1377 | * - if in automatic or on/off mode, we could switch to manual mode, | |
1378 | * read the registers and set manual_pwm_ctl accordingly, but currently | |
1379 | * this is not implemented, so we initialize to something sane */ | |
1380 | for (i = 0; i < 3; i++) { | |
1381 | data->manual_pwm_ctl[i] = 0xff; | |
1382 | } | |
1383 | ||
c5df9b7a JD |
1384 | /* Some chips seem to have default value 0xff for all limit |
1385 | * registers. For low voltage limits it makes no sense and triggers | |
1386 | * alarms, so change to 0 instead. For high temperature limits, it | |
1387 | * means -1 degree C, which surprisingly doesn't trigger an alarm, | |
1388 | * but is still confusing, so change to 127 degrees C. */ | |
1389 | for (i = 0; i < 8; i++) { | |
b74f3fdd | 1390 | tmp = it87_read_value(data, IT87_REG_VIN_MIN(i)); |
c5df9b7a | 1391 | if (tmp == 0xff) |
b74f3fdd | 1392 | it87_write_value(data, IT87_REG_VIN_MIN(i), 0); |
c5df9b7a JD |
1393 | } |
1394 | for (i = 0; i < 3; i++) { | |
b74f3fdd | 1395 | tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i)); |
c5df9b7a | 1396 | if (tmp == 0xff) |
b74f3fdd | 1397 | it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127); |
c5df9b7a JD |
1398 | } |
1399 | ||
77fa49d9 | 1400 | /* Check if temperature channels are reset manually or by some reason */ |
b74f3fdd | 1401 | tmp = it87_read_value(data, IT87_REG_TEMP_ENABLE); |
1da177e4 LT |
1402 | if ((tmp & 0x3f) == 0) { |
1403 | /* Temp1,Temp3=thermistor; Temp2=thermal diode */ | |
1404 | tmp = (tmp & 0xc0) | 0x2a; | |
b74f3fdd | 1405 | it87_write_value(data, IT87_REG_TEMP_ENABLE, tmp); |
1da177e4 LT |
1406 | } |
1407 | data->sensor = tmp; | |
1408 | ||
1409 | /* Check if voltage monitors are reset manually or by some reason */ | |
b74f3fdd | 1410 | tmp = it87_read_value(data, IT87_REG_VIN_ENABLE); |
1da177e4 LT |
1411 | if ((tmp & 0xff) == 0) { |
1412 | /* Enable all voltage monitors */ | |
b74f3fdd | 1413 | it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff); |
1da177e4 LT |
1414 | } |
1415 | ||
1416 | /* Check if tachometers are reset manually or by some reason */ | |
b74f3fdd | 1417 | data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL); |
1da177e4 LT |
1418 | if ((data->fan_main_ctrl & 0x70) == 0) { |
1419 | /* Enable all fan tachometers */ | |
1420 | data->fan_main_ctrl |= 0x70; | |
b74f3fdd | 1421 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 | 1422 | } |
9060f8bd | 1423 | data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; |
1da177e4 | 1424 | |
17d648bf | 1425 | /* Set tachometers to 16-bit mode if needed */ |
0475169c | 1426 | if (has_16bit_fans(data)) { |
b74f3fdd | 1427 | tmp = it87_read_value(data, IT87_REG_FAN_16BIT); |
9060f8bd | 1428 | if (~tmp & 0x07 & data->has_fan) { |
b74f3fdd | 1429 | dev_dbg(&pdev->dev, |
17d648bf | 1430 | "Setting fan1-3 to 16-bit mode\n"); |
b74f3fdd | 1431 | it87_write_value(data, IT87_REG_FAN_16BIT, |
17d648bf JD |
1432 | tmp | 0x07); |
1433 | } | |
816d8c6a AP |
1434 | /* IT8705F only supports three fans. */ |
1435 | if (data->type != it87) { | |
1436 | if (tmp & (1 << 4)) | |
1437 | data->has_fan |= (1 << 3); /* fan4 enabled */ | |
1438 | if (tmp & (1 << 5)) | |
1439 | data->has_fan |= (1 << 4); /* fan5 enabled */ | |
1440 | } | |
17d648bf JD |
1441 | } |
1442 | ||
1da177e4 LT |
1443 | /* Set current fan mode registers and the default settings for the |
1444 | * other mode registers */ | |
1445 | for (i = 0; i < 3; i++) { | |
1446 | if (data->fan_main_ctrl & (1 << i)) { | |
1447 | /* pwm mode */ | |
b74f3fdd | 1448 | tmp = it87_read_value(data, IT87_REG_PWM(i)); |
1da177e4 LT |
1449 | if (tmp & 0x80) { |
1450 | /* automatic pwm - not yet implemented, but | |
1451 | * leave the settings made by the BIOS alone | |
1452 | * until a change is requested via the sysfs | |
1453 | * interface */ | |
1454 | } else { | |
1455 | /* manual pwm */ | |
1456 | data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp); | |
1457 | } | |
1458 | } | |
1459 | } | |
1460 | ||
1461 | /* Start monitoring */ | |
b74f3fdd | 1462 | it87_write_value(data, IT87_REG_CONFIG, |
1463 | (it87_read_value(data, IT87_REG_CONFIG) & 0x36) | |
1da177e4 LT |
1464 | | (update_vbat ? 0x41 : 0x01)); |
1465 | } | |
1466 | ||
1467 | static struct it87_data *it87_update_device(struct device *dev) | |
1468 | { | |
b74f3fdd | 1469 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
1470 | int i; |
1471 | ||
9a61bf63 | 1472 | mutex_lock(&data->update_lock); |
1da177e4 LT |
1473 | |
1474 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
1475 | || !data->valid) { | |
1476 | ||
1477 | if (update_vbat) { | |
1478 | /* Cleared after each update, so reenable. Value | |
1479 | returned by this read will be previous value */ | |
b74f3fdd | 1480 | it87_write_value(data, IT87_REG_CONFIG, |
1481 | it87_read_value(data, IT87_REG_CONFIG) | 0x40); | |
1da177e4 LT |
1482 | } |
1483 | for (i = 0; i <= 7; i++) { | |
1484 | data->in[i] = | |
b74f3fdd | 1485 | it87_read_value(data, IT87_REG_VIN(i)); |
1da177e4 | 1486 | data->in_min[i] = |
b74f3fdd | 1487 | it87_read_value(data, IT87_REG_VIN_MIN(i)); |
1da177e4 | 1488 | data->in_max[i] = |
b74f3fdd | 1489 | it87_read_value(data, IT87_REG_VIN_MAX(i)); |
1da177e4 | 1490 | } |
3543a53f | 1491 | /* in8 (battery) has no limit registers */ |
1da177e4 | 1492 | data->in[8] = |
b74f3fdd | 1493 | it87_read_value(data, IT87_REG_VIN(8)); |
1da177e4 | 1494 | |
c7f1f716 | 1495 | for (i = 0; i < 5; i++) { |
9060f8bd JD |
1496 | /* Skip disabled fans */ |
1497 | if (!(data->has_fan & (1 << i))) | |
1498 | continue; | |
1499 | ||
1da177e4 | 1500 | data->fan_min[i] = |
c7f1f716 | 1501 | it87_read_value(data, IT87_REG_FAN_MIN[i]); |
b74f3fdd | 1502 | data->fan[i] = it87_read_value(data, |
c7f1f716 | 1503 | IT87_REG_FAN[i]); |
17d648bf | 1504 | /* Add high byte if in 16-bit mode */ |
0475169c | 1505 | if (has_16bit_fans(data)) { |
b74f3fdd | 1506 | data->fan[i] |= it87_read_value(data, |
c7f1f716 | 1507 | IT87_REG_FANX[i]) << 8; |
b74f3fdd | 1508 | data->fan_min[i] |= it87_read_value(data, |
c7f1f716 | 1509 | IT87_REG_FANX_MIN[i]) << 8; |
17d648bf | 1510 | } |
1da177e4 LT |
1511 | } |
1512 | for (i = 0; i < 3; i++) { | |
1513 | data->temp[i] = | |
b74f3fdd | 1514 | it87_read_value(data, IT87_REG_TEMP(i)); |
1da177e4 | 1515 | data->temp_high[i] = |
b74f3fdd | 1516 | it87_read_value(data, IT87_REG_TEMP_HIGH(i)); |
1da177e4 | 1517 | data->temp_low[i] = |
b74f3fdd | 1518 | it87_read_value(data, IT87_REG_TEMP_LOW(i)); |
1da177e4 LT |
1519 | } |
1520 | ||
17d648bf | 1521 | /* Newer chips don't have clock dividers */ |
0475169c | 1522 | if ((data->has_fan & 0x07) && !has_16bit_fans(data)) { |
b74f3fdd | 1523 | i = it87_read_value(data, IT87_REG_FAN_DIV); |
17d648bf JD |
1524 | data->fan_div[0] = i & 0x07; |
1525 | data->fan_div[1] = (i >> 3) & 0x07; | |
1526 | data->fan_div[2] = (i & 0x40) ? 3 : 1; | |
1527 | } | |
1da177e4 LT |
1528 | |
1529 | data->alarms = | |
b74f3fdd | 1530 | it87_read_value(data, IT87_REG_ALARM1) | |
1531 | (it87_read_value(data, IT87_REG_ALARM2) << 8) | | |
1532 | (it87_read_value(data, IT87_REG_ALARM3) << 16); | |
1533 | data->fan_main_ctrl = it87_read_value(data, | |
1534 | IT87_REG_FAN_MAIN_CTRL); | |
1535 | data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL); | |
1536 | ||
1537 | data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE); | |
0475169c | 1538 | /* The 8705 does not have VID capability. |
b4da93e4 JMS |
1539 | The 8718 and the 8720 don't use IT87_REG_VID for the |
1540 | same purpose. */ | |
17d648bf | 1541 | if (data->type == it8712 || data->type == it8716) { |
b74f3fdd | 1542 | data->vid = it87_read_value(data, IT87_REG_VID); |
17d648bf JD |
1543 | /* The older IT8712F revisions had only 5 VID pins, |
1544 | but we assume it is always safe to read 6 bits. */ | |
1545 | data->vid &= 0x3f; | |
1da177e4 LT |
1546 | } |
1547 | data->last_updated = jiffies; | |
1548 | data->valid = 1; | |
1549 | } | |
1550 | ||
9a61bf63 | 1551 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1552 | |
1553 | return data; | |
1554 | } | |
1555 | ||
b74f3fdd | 1556 | static int __init it87_device_add(unsigned short address, |
1557 | const struct it87_sio_data *sio_data) | |
1558 | { | |
1559 | struct resource res = { | |
87b4b663 BH |
1560 | .start = address + IT87_EC_OFFSET, |
1561 | .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1, | |
b74f3fdd | 1562 | .name = DRVNAME, |
1563 | .flags = IORESOURCE_IO, | |
1564 | }; | |
1565 | int err; | |
1566 | ||
b9acb64a JD |
1567 | err = acpi_check_resource_conflict(&res); |
1568 | if (err) | |
1569 | goto exit; | |
1570 | ||
b74f3fdd | 1571 | pdev = platform_device_alloc(DRVNAME, address); |
1572 | if (!pdev) { | |
1573 | err = -ENOMEM; | |
1574 | printk(KERN_ERR DRVNAME ": Device allocation failed\n"); | |
1575 | goto exit; | |
1576 | } | |
1577 | ||
1578 | err = platform_device_add_resources(pdev, &res, 1); | |
1579 | if (err) { | |
1580 | printk(KERN_ERR DRVNAME ": Device resource addition failed " | |
1581 | "(%d)\n", err); | |
1582 | goto exit_device_put; | |
1583 | } | |
1584 | ||
1585 | err = platform_device_add_data(pdev, sio_data, | |
1586 | sizeof(struct it87_sio_data)); | |
1587 | if (err) { | |
1588 | printk(KERN_ERR DRVNAME ": Platform data allocation failed\n"); | |
1589 | goto exit_device_put; | |
1590 | } | |
1591 | ||
1592 | err = platform_device_add(pdev); | |
1593 | if (err) { | |
1594 | printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", | |
1595 | err); | |
1596 | goto exit_device_put; | |
1597 | } | |
1598 | ||
1599 | return 0; | |
1600 | ||
1601 | exit_device_put: | |
1602 | platform_device_put(pdev); | |
1603 | exit: | |
1604 | return err; | |
1605 | } | |
1606 | ||
1da177e4 LT |
1607 | static int __init sm_it87_init(void) |
1608 | { | |
b74f3fdd | 1609 | int err; |
1610 | unsigned short isa_address=0; | |
1611 | struct it87_sio_data sio_data; | |
1612 | ||
98dd22c3 | 1613 | memset(&sio_data, 0, sizeof(struct it87_sio_data)); |
b74f3fdd | 1614 | err = it87_find(&isa_address, &sio_data); |
1615 | if (err) | |
1616 | return err; | |
1617 | err = platform_driver_register(&it87_driver); | |
1618 | if (err) | |
1619 | return err; | |
fde09509 | 1620 | |
b74f3fdd | 1621 | err = it87_device_add(isa_address, &sio_data); |
1622 | if (err){ | |
1623 | platform_driver_unregister(&it87_driver); | |
1624 | return err; | |
1625 | } | |
1626 | ||
1627 | return 0; | |
1da177e4 LT |
1628 | } |
1629 | ||
1630 | static void __exit sm_it87_exit(void) | |
1631 | { | |
b74f3fdd | 1632 | platform_device_unregister(pdev); |
1633 | platform_driver_unregister(&it87_driver); | |
1da177e4 LT |
1634 | } |
1635 | ||
1636 | ||
f1d8e332 | 1637 | MODULE_AUTHOR("Chris Gauthron, " |
b19367c6 | 1638 | "Jean Delvare <khali@linux-fr.org>"); |
b4da93e4 | 1639 | MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8720F/8726F, SiS950 driver"); |
1da177e4 LT |
1640 | module_param(update_vbat, bool, 0); |
1641 | MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); | |
1642 | module_param(fix_pwm_polarity, bool, 0); | |
1643 | MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)"); | |
1644 | MODULE_LICENSE("GPL"); | |
1645 | ||
1646 | module_init(sm_it87_init); | |
1647 | module_exit(sm_it87_exit); |