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Merge remote-tracking branch 'asoc/fix/atmel' into asoc-linus
[linux/fpc-iii.git] / drivers / hwmon / it87.c
blob72b21d5b1c621ece4f8059ba48ae6afe26642c21
1 /*
2 * it87.c - Part of lm_sensors, Linux kernel modules for hardware
3 * monitoring.
4 *
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 *
13 * Supports: IT8705F Super I/O chip w/LPC interface
14 * IT8712F Super I/O chip w/LPC interface
15 * IT8716F Super I/O chip w/LPC interface
16 * IT8718F Super I/O chip w/LPC interface
17 * IT8720F Super I/O chip w/LPC interface
18 * IT8721F Super I/O chip w/LPC interface
19 * IT8726F Super I/O chip w/LPC interface
20 * IT8728F Super I/O chip w/LPC interface
21 * IT8758E Super I/O chip w/LPC interface
22 * IT8771E Super I/O chip w/LPC interface
23 * IT8772E Super I/O chip w/LPC interface
24 * IT8782F Super I/O chip w/LPC interface
25 * IT8783E/F Super I/O chip w/LPC interface
26 * Sis950 A clone of the IT8705F
27 *
28 * Copyright (C) 2001 Chris Gauthron
29 * Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org>
30 *
31 * This program is free software; you can redistribute it and/or modify
32 * it under the terms of the GNU General Public License as published by
33 * the Free Software Foundation; either version 2 of the License, or
34 * (at your option) any later version.
35 *
36 * This program is distributed in the hope that it will be useful,
37 * but WITHOUT ANY WARRANTY; without even the implied warranty of
38 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
39 * GNU General Public License for more details.
40 *
41 * You should have received a copy of the GNU General Public License
42 * along with this program; if not, write to the Free Software
43 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
44 */
45
46 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
47
48 #include <linux/module.h>
49 #include <linux/init.h>
50 #include <linux/slab.h>
51 #include <linux/jiffies.h>
52 #include <linux/platform_device.h>
53 #include <linux/hwmon.h>
54 #include <linux/hwmon-sysfs.h>
55 #include <linux/hwmon-vid.h>
56 #include <linux/err.h>
57 #include <linux/mutex.h>
58 #include <linux/sysfs.h>
59 #include <linux/string.h>
60 #include <linux/dmi.h>
61 #include <linux/acpi.h>
62 #include <linux/io.h>
63
64 #define DRVNAME "it87"
65
66 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8771,
67 it8772, it8782, it8783 };
68
69 static unsigned short force_id;
70 module_param(force_id, ushort, 0);
71 MODULE_PARM_DESC(force_id, "Override the detected device ID");
72
73 static struct platform_device *pdev;
74
75 #define REG 0x2e /* The register to read/write */
76 #define DEV 0x07 /* Register: Logical device select */
77 #define VAL 0x2f /* The value to read/write */
78 #define PME 0x04 /* The device with the fan registers in it */
79
80 /* The device with the IT8718F/IT8720F VID value in it */
81 #define GPIO 0x07
82
83 #define DEVID 0x20 /* Register: Device ID */
84 #define DEVREV 0x22 /* Register: Device Revision */
85
86 static inline int superio_inb(int reg)
87 {
88 outb(reg, REG);
89 return inb(VAL);
90 }
91
92 static inline void superio_outb(int reg, int val)
93 {
94 outb(reg, REG);
95 outb(val, VAL);
96 }
97
98 static int superio_inw(int reg)
99 {
100 int val;
101 outb(reg++, REG);
102 val = inb(VAL) << 8;
103 outb(reg, REG);
104 val |= inb(VAL);
105 return val;
106 }
107
108 static inline void superio_select(int ldn)
109 {
110 outb(DEV, REG);
111 outb(ldn, VAL);
112 }
113
114 static inline int superio_enter(void)
115 {
116 /*
117 * Try to reserve REG and REG + 1 for exclusive access.
118 */
119 if (!request_muxed_region(REG, 2, DRVNAME))
120 return -EBUSY;
121
122 outb(0x87, REG);
123 outb(0x01, REG);
124 outb(0x55, REG);
125 outb(0x55, REG);
126 return 0;
127 }
128
129 static inline void superio_exit(void)
130 {
131 outb(0x02, REG);
132 outb(0x02, VAL);
133 release_region(REG, 2);
134 }
135
136 /* Logical device 4 registers */
137 #define IT8712F_DEVID 0x8712
138 #define IT8705F_DEVID 0x8705
139 #define IT8716F_DEVID 0x8716
140 #define IT8718F_DEVID 0x8718
141 #define IT8720F_DEVID 0x8720
142 #define IT8721F_DEVID 0x8721
143 #define IT8726F_DEVID 0x8726
144 #define IT8728F_DEVID 0x8728
145 #define IT8771E_DEVID 0x8771
146 #define IT8772E_DEVID 0x8772
147 #define IT8782F_DEVID 0x8782
148 #define IT8783E_DEVID 0x8783
149 #define IT87_ACT_REG 0x30
150 #define IT87_BASE_REG 0x60
151
152 /* Logical device 7 registers (IT8712F and later) */
153 #define IT87_SIO_GPIO1_REG 0x25
154 #define IT87_SIO_GPIO3_REG 0x27
155 #define IT87_SIO_GPIO5_REG 0x29
156 #define IT87_SIO_PINX1_REG 0x2a /* Pin selection */
157 #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
158 #define IT87_SIO_SPI_REG 0xef /* SPI function pin select */
159 #define IT87_SIO_VID_REG 0xfc /* VID value */
160 #define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */
161
162 /* Update battery voltage after every reading if true */
163 static bool update_vbat;
164
165 /* Not all BIOSes properly configure the PWM registers */
166 static bool fix_pwm_polarity;
167
168 /* Many IT87 constants specified below */
169
170 /* Length of ISA address segment */
171 #define IT87_EXTENT 8
172
173 /* Length of ISA address segment for Environmental Controller */
174 #define IT87_EC_EXTENT 2
175
176 /* Offset of EC registers from ISA base address */
177 #define IT87_EC_OFFSET 5
178
179 /* Where are the ISA address/data registers relative to the EC base address */
180 #define IT87_ADDR_REG_OFFSET 0
181 #define IT87_DATA_REG_OFFSET 1
182
183 /*----- The IT87 registers -----*/
184
185 #define IT87_REG_CONFIG 0x00
186
187 #define IT87_REG_ALARM1 0x01
188 #define IT87_REG_ALARM2 0x02
189 #define IT87_REG_ALARM3 0x03
190
191 /*
192 * The IT8718F and IT8720F have the VID value in a different register, in
193 * Super-I/O configuration space.
194 */
195 #define IT87_REG_VID 0x0a
196 /*
197 * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
198 * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
199 * mode.
200 */
201 #define IT87_REG_FAN_DIV 0x0b
202 #define IT87_REG_FAN_16BIT 0x0c
203
204 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
205
206 static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
207 static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 };
208 static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
209 static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
210 static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 };
211
212 #define IT87_REG_FAN_MAIN_CTRL 0x13
213 #define IT87_REG_FAN_CTL 0x14
214 #define IT87_REG_PWM(nr) (0x15 + (nr))
215 #define IT87_REG_PWM_DUTY(nr) (0x63 + (nr) * 8)
216
217 #define IT87_REG_VIN(nr) (0x20 + (nr))
218 #define IT87_REG_TEMP(nr) (0x29 + (nr))
219
220 #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
221 #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
222 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
223 #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
224
225 #define IT87_REG_VIN_ENABLE 0x50
226 #define IT87_REG_TEMP_ENABLE 0x51
227 #define IT87_REG_TEMP_EXTRA 0x55
228 #define IT87_REG_BEEP_ENABLE 0x5c
229
230 #define IT87_REG_CHIPID 0x58
231
232 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
233 #define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i))
234
235 struct it87_devices {
236 const char *name;
237 u16 features;
238 u8 peci_mask;
239 u8 old_peci_mask;
240 };
241
242 #define FEAT_12MV_ADC (1 << 0)
243 #define FEAT_NEWER_AUTOPWM (1 << 1)
244 #define FEAT_OLD_AUTOPWM (1 << 2)
245 #define FEAT_16BIT_FANS (1 << 3)
246 #define FEAT_TEMP_OFFSET (1 << 4)
247 #define FEAT_TEMP_PECI (1 << 5)
248 #define FEAT_TEMP_OLD_PECI (1 << 6)
249
250 static const struct it87_devices it87_devices[] = {
251 [it87] = {
252 .name = "it87",
253 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */
254 },
255 [it8712] = {
256 .name = "it8712",
257 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */
258 },
259 [it8716] = {
260 .name = "it8716",
261 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
262 },
263 [it8718] = {
264 .name = "it8718",
265 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
266 | FEAT_TEMP_OLD_PECI,
267 .old_peci_mask = 0x4,
268 },
269 [it8720] = {
270 .name = "it8720",
271 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
272 | FEAT_TEMP_OLD_PECI,
273 .old_peci_mask = 0x4,
274 },
275 [it8721] = {
276 .name = "it8721",
277 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
278 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI,
279 .peci_mask = 0x05,
280 .old_peci_mask = 0x02, /* Actually reports PCH */
281 },
282 [it8728] = {
283 .name = "it8728",
284 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
285 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
286 .peci_mask = 0x07,
287 },
288 [it8771] = {
289 .name = "it8771",
290 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
291 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
292 /* PECI: guesswork */
293 /* 12mV ADC (OHM) */
294 /* 16 bit fans (OHM) */
295 .peci_mask = 0x07,
296 },
297 [it8772] = {
298 .name = "it8772",
299 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
300 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
301 /* PECI (coreboot) */
302 /* 12mV ADC (HWSensors4, OHM) */
303 /* 16 bit fans (HWSensors4, OHM) */
304 .peci_mask = 0x07,
305 },
306 [it8782] = {
307 .name = "it8782",
308 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
309 | FEAT_TEMP_OLD_PECI,
310 .old_peci_mask = 0x4,
311 },
312 [it8783] = {
313 .name = "it8783",
314 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
315 | FEAT_TEMP_OLD_PECI,
316 .old_peci_mask = 0x4,
317 },
318 };
319
320 #define has_16bit_fans(data) ((data)->features & FEAT_16BIT_FANS)
321 #define has_12mv_adc(data) ((data)->features & FEAT_12MV_ADC)
322 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
323 #define has_old_autopwm(data) ((data)->features & FEAT_OLD_AUTOPWM)
324 #define has_temp_offset(data) ((data)->features & FEAT_TEMP_OFFSET)
325 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
326 ((data)->peci_mask & (1 << nr)))
327 #define has_temp_old_peci(data, nr) \
328 (((data)->features & FEAT_TEMP_OLD_PECI) && \
329 ((data)->old_peci_mask & (1 << nr)))
330
331 struct it87_sio_data {
332 enum chips type;
333 /* Values read from Super-I/O config space */
334 u8 revision;
335 u8 vid_value;
336 u8 beep_pin;
337 u8 internal; /* Internal sensors can be labeled */
338 /* Features skipped based on config or DMI */
339 u16 skip_in;
340 u8 skip_vid;
341 u8 skip_fan;
342 u8 skip_pwm;
343 u8 skip_temp;
344 };
345
346 /*
347 * For each registered chip, we need to keep some data in memory.
348 * The structure is dynamically allocated.
349 */
350 struct it87_data {
351 struct device *hwmon_dev;
352 enum chips type;
353 u16 features;
354 u8 peci_mask;
355 u8 old_peci_mask;
356
357 unsigned short addr;
358 const char *name;
359 struct mutex update_lock;
360 char valid; /* !=0 if following fields are valid */
361 unsigned long last_updated; /* In jiffies */
362
363 u16 in_scaled; /* Internal voltage sensors are scaled */
364 u8 in[9][3]; /* [nr][0]=in, [1]=min, [2]=max */
365 u8 has_fan; /* Bitfield, fans enabled */
366 u16 fan[5][2]; /* Register values, [nr][0]=fan, [1]=min */
367 u8 has_temp; /* Bitfield, temp sensors enabled */
368 s8 temp[3][4]; /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
369 u8 sensor; /* Register value (IT87_REG_TEMP_ENABLE) */
370 u8 extra; /* Register value (IT87_REG_TEMP_EXTRA) */
371 u8 fan_div[3]; /* Register encoding, shifted right */
372 u8 vid; /* Register encoding, combined */
373 u8 vrm;
374 u32 alarms; /* Register encoding, combined */
375 u8 beeps; /* Register encoding */
376 u8 fan_main_ctrl; /* Register value */
377 u8 fan_ctl; /* Register value */
378
379 /*
380 * The following 3 arrays correspond to the same registers up to
381 * the IT8720F. The meaning of bits 6-0 depends on the value of bit
382 * 7, and we want to preserve settings on mode changes, so we have
383 * to track all values separately.
384 * Starting with the IT8721F, the manual PWM duty cycles are stored
385 * in separate registers (8-bit values), so the separate tracking
386 * is no longer needed, but it is still done to keep the driver
387 * simple.
388 */
389 u8 pwm_ctrl[3]; /* Register value */
390 u8 pwm_duty[3]; /* Manual PWM value set by user */
391 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */
392
393 /* Automatic fan speed control registers */
394 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */
395 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */
396 };
397
398 static int adc_lsb(const struct it87_data *data, int nr)
399 {
400 int lsb = has_12mv_adc(data) ? 12 : 16;
401 if (data->in_scaled & (1 << nr))
402 lsb <<= 1;
403 return lsb;
404 }
405
406 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
407 {
408 val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
409 return clamp_val(val, 0, 255);
410 }
411
412 static int in_from_reg(const struct it87_data *data, int nr, int val)
413 {
414 return val * adc_lsb(data, nr);
415 }
416
417 static inline u8 FAN_TO_REG(long rpm, int div)
418 {
419 if (rpm == 0)
420 return 255;
421 rpm = clamp_val(rpm, 1, 1000000);
422 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
423 }
424
425 static inline u16 FAN16_TO_REG(long rpm)
426 {
427 if (rpm == 0)
428 return 0xffff;
429 return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
430 }
431
432 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
433 1350000 / ((val) * (div)))
434 /* The divider is fixed to 2 in 16-bit mode */
435 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
436 1350000 / ((val) * 2))
437
438 #define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \
439 ((val) + 500) / 1000), -128, 127))
440 #define TEMP_FROM_REG(val) ((val) * 1000)
441
442 static u8 pwm_to_reg(const struct it87_data *data, long val)
443 {
444 if (has_newer_autopwm(data))
445 return val;
446 else
447 return val >> 1;
448 }
449
450 static int pwm_from_reg(const struct it87_data *data, u8 reg)
451 {
452 if (has_newer_autopwm(data))
453 return reg;
454 else
455 return (reg & 0x7f) << 1;
456 }
457
458
459 static int DIV_TO_REG(int val)
460 {
461 int answer = 0;
462 while (answer < 7 && (val >>= 1))
463 answer++;
464 return answer;
465 }
466 #define DIV_FROM_REG(val) (1 << (val))
467
468 static const unsigned int pwm_freq[8] = {
469 48000000 / 128,
470 24000000 / 128,
471 12000000 / 128,
472 8000000 / 128,
473 6000000 / 128,
474 3000000 / 128,
475 1500000 / 128,
476 750000 / 128,
477 };
478
479 static int it87_probe(struct platform_device *pdev);
480 static int it87_remove(struct platform_device *pdev);
481
482 static int it87_read_value(struct it87_data *data, u8 reg);
483 static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
484 static struct it87_data *it87_update_device(struct device *dev);
485 static int it87_check_pwm(struct device *dev);
486 static void it87_init_device(struct platform_device *pdev);
487
488
489 static struct platform_driver it87_driver = {
490 .driver = {
491 .owner = THIS_MODULE,
492 .name = DRVNAME,
493 },
494 .probe = it87_probe,
495 .remove = it87_remove,
496 };
497
498 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
499 char *buf)
500 {
501 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
502 int nr = sattr->nr;
503 int index = sattr->index;
504
505 struct it87_data *data = it87_update_device(dev);
506 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
507 }
508
509 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
510 const char *buf, size_t count)
511 {
512 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
513 int nr = sattr->nr;
514 int index = sattr->index;
515
516 struct it87_data *data = dev_get_drvdata(dev);
517 unsigned long val;
518
519 if (kstrtoul(buf, 10, &val) < 0)
520 return -EINVAL;
521
522 mutex_lock(&data->update_lock);
523 data->in[nr][index] = in_to_reg(data, nr, val);
524 it87_write_value(data,
525 index == 1 ? IT87_REG_VIN_MIN(nr)
526 : IT87_REG_VIN_MAX(nr),
527 data->in[nr][index]);
528 mutex_unlock(&data->update_lock);
529 return count;
530 }
531
532 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
533 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
534 0, 1);
535 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
536 0, 2);
537
538 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
539 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
540 1, 1);
541 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
542 1, 2);
543
544 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
545 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
546 2, 1);
547 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
548 2, 2);
549
550 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
551 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
552 3, 1);
553 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
554 3, 2);
555
556 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
557 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
558 4, 1);
559 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
560 4, 2);
561
562 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
563 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
564 5, 1);
565 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
566 5, 2);
567
568 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
569 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
570 6, 1);
571 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
572 6, 2);
573
574 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
575 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
576 7, 1);
577 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
578 7, 2);
579
580 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
581
582 /* 3 temperatures */
583 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
584 char *buf)
585 {
586 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
587 int nr = sattr->nr;
588 int index = sattr->index;
589 struct it87_data *data = it87_update_device(dev);
590
591 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
592 }
593
594 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
595 const char *buf, size_t count)
596 {
597 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
598 int nr = sattr->nr;
599 int index = sattr->index;
600 struct it87_data *data = dev_get_drvdata(dev);
601 long val;
602 u8 reg, regval;
603
604 if (kstrtol(buf, 10, &val) < 0)
605 return -EINVAL;
606
607 mutex_lock(&data->update_lock);
608
609 switch (index) {
610 default:
611 case 1:
612 reg = IT87_REG_TEMP_LOW(nr);
613 break;
614 case 2:
615 reg = IT87_REG_TEMP_HIGH(nr);
616 break;
617 case 3:
618 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
619 if (!(regval & 0x80)) {
620 regval |= 0x80;
621 it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
622 }
623 data->valid = 0;
624 reg = IT87_REG_TEMP_OFFSET[nr];
625 break;
626 }
627
628 data->temp[nr][index] = TEMP_TO_REG(val);
629 it87_write_value(data, reg, data->temp[nr][index]);
630 mutex_unlock(&data->update_lock);
631 return count;
632 }
633
634 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
635 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
636 0, 1);
637 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
638 0, 2);
639 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
640 set_temp, 0, 3);
641 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
642 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
643 1, 1);
644 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
645 1, 2);
646 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
647 set_temp, 1, 3);
648 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
649 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
650 2, 1);
651 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
652 2, 2);
653 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
654 set_temp, 2, 3);
655
656 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
657 char *buf)
658 {
659 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
660 int nr = sensor_attr->index;
661 struct it87_data *data = it87_update_device(dev);
662 u8 reg = data->sensor; /* In case value is updated while used */
663 u8 extra = data->extra;
664
665 if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1))
666 || (has_temp_old_peci(data, nr) && (extra & 0x80)))
667 return sprintf(buf, "6\n"); /* Intel PECI */
668 if (reg & (1 << nr))
669 return sprintf(buf, "3\n"); /* thermal diode */
670 if (reg & (8 << nr))
671 return sprintf(buf, "4\n"); /* thermistor */
672 return sprintf(buf, "0\n"); /* disabled */
673 }
674
675 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
676 const char *buf, size_t count)
677 {
678 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
679 int nr = sensor_attr->index;
680
681 struct it87_data *data = dev_get_drvdata(dev);
682 long val;
683 u8 reg, extra;
684
685 if (kstrtol(buf, 10, &val) < 0)
686 return -EINVAL;
687
688 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
689 reg &= ~(1 << nr);
690 reg &= ~(8 << nr);
691 if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
692 reg &= 0x3f;
693 extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
694 if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
695 extra &= 0x7f;
696 if (val == 2) { /* backwards compatibility */
697 dev_warn(dev,
698 "Sensor type 2 is deprecated, please use 4 instead\n");
699 val = 4;
700 }
701 /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
702 if (val == 3)
703 reg |= 1 << nr;
704 else if (val == 4)
705 reg |= 8 << nr;
706 else if (has_temp_peci(data, nr) && val == 6)
707 reg |= (nr + 1) << 6;
708 else if (has_temp_old_peci(data, nr) && val == 6)
709 extra |= 0x80;
710 else if (val != 0)
711 return -EINVAL;
712
713 mutex_lock(&data->update_lock);
714 data->sensor = reg;
715 data->extra = extra;
716 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
717 if (has_temp_old_peci(data, nr))
718 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
719 data->valid = 0; /* Force cache refresh */
720 mutex_unlock(&data->update_lock);
721 return count;
722 }
723
724 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
725 set_temp_type, 0);
726 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
727 set_temp_type, 1);
728 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
729 set_temp_type, 2);
730
731 /* 3 Fans */
732
733 static int pwm_mode(const struct it87_data *data, int nr)
734 {
735 int ctrl = data->fan_main_ctrl & (1 << nr);
736
737 if (ctrl == 0) /* Full speed */
738 return 0;
739 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
740 return 2;
741 else /* Manual mode */
742 return 1;
743 }
744
745 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
746 char *buf)
747 {
748 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
749 int nr = sattr->nr;
750 int index = sattr->index;
751 int speed;
752 struct it87_data *data = it87_update_device(dev);
753
754 speed = has_16bit_fans(data) ?
755 FAN16_FROM_REG(data->fan[nr][index]) :
756 FAN_FROM_REG(data->fan[nr][index],
757 DIV_FROM_REG(data->fan_div[nr]));
758 return sprintf(buf, "%d\n", speed);
759 }
760
761 static ssize_t show_fan_div(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
767 struct it87_data *data = it87_update_device(dev);
768 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
769 }
770 static ssize_t show_pwm_enable(struct device *dev,
771 struct device_attribute *attr, char *buf)
772 {
773 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
774 int nr = sensor_attr->index;
775
776 struct it87_data *data = it87_update_device(dev);
777 return sprintf(buf, "%d\n", pwm_mode(data, nr));
778 }
779 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
780 char *buf)
781 {
782 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
783 int nr = sensor_attr->index;
784
785 struct it87_data *data = it87_update_device(dev);
786 return sprintf(buf, "%d\n",
787 pwm_from_reg(data, data->pwm_duty[nr]));
788 }
789 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
790 char *buf)
791 {
792 struct it87_data *data = it87_update_device(dev);
793 int index = (data->fan_ctl >> 4) & 0x07;
794
795 return sprintf(buf, "%u\n", pwm_freq[index]);
796 }
797
798 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
799 const char *buf, size_t count)
800 {
801 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
802 int nr = sattr->nr;
803 int index = sattr->index;
804
805 struct it87_data *data = dev_get_drvdata(dev);
806 long val;
807 u8 reg;
808
809 if (kstrtol(buf, 10, &val) < 0)
810 return -EINVAL;
811
812 mutex_lock(&data->update_lock);
813
814 if (has_16bit_fans(data)) {
815 data->fan[nr][index] = FAN16_TO_REG(val);
816 it87_write_value(data, IT87_REG_FAN_MIN[nr],
817 data->fan[nr][index] & 0xff);
818 it87_write_value(data, IT87_REG_FANX_MIN[nr],
819 data->fan[nr][index] >> 8);
820 } else {
821 reg = it87_read_value(data, IT87_REG_FAN_DIV);
822 switch (nr) {
823 case 0:
824 data->fan_div[nr] = reg & 0x07;
825 break;
826 case 1:
827 data->fan_div[nr] = (reg >> 3) & 0x07;
828 break;
829 case 2:
830 data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
831 break;
832 }
833 data->fan[nr][index] =
834 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
835 it87_write_value(data, IT87_REG_FAN_MIN[nr],
836 data->fan[nr][index]);
837 }
838
839 mutex_unlock(&data->update_lock);
840 return count;
841 }
842
843 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
844 const char *buf, size_t count)
845 {
846 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
847 int nr = sensor_attr->index;
848
849 struct it87_data *data = dev_get_drvdata(dev);
850 unsigned long val;
851 int min;
852 u8 old;
853
854 if (kstrtoul(buf, 10, &val) < 0)
855 return -EINVAL;
856
857 mutex_lock(&data->update_lock);
858 old = it87_read_value(data, IT87_REG_FAN_DIV);
859
860 /* Save fan min limit */
861 min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
862
863 switch (nr) {
864 case 0:
865 case 1:
866 data->fan_div[nr] = DIV_TO_REG(val);
867 break;
868 case 2:
869 if (val < 8)
870 data->fan_div[nr] = 1;
871 else
872 data->fan_div[nr] = 3;
873 }
874 val = old & 0x80;
875 val |= (data->fan_div[0] & 0x07);
876 val |= (data->fan_div[1] & 0x07) << 3;
877 if (data->fan_div[2] == 3)
878 val |= 0x1 << 6;
879 it87_write_value(data, IT87_REG_FAN_DIV, val);
880
881 /* Restore fan min limit */
882 data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
883 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
884
885 mutex_unlock(&data->update_lock);
886 return count;
887 }
888
889 /* Returns 0 if OK, -EINVAL otherwise */
890 static int check_trip_points(struct device *dev, int nr)
891 {
892 const struct it87_data *data = dev_get_drvdata(dev);
893 int i, err = 0;
894
895 if (has_old_autopwm(data)) {
896 for (i = 0; i < 3; i++) {
897 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
898 err = -EINVAL;
899 }
900 for (i = 0; i < 2; i++) {
901 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
902 err = -EINVAL;
903 }
904 }
905
906 if (err) {
907 dev_err(dev,
908 "Inconsistent trip points, not switching to automatic mode\n");
909 dev_err(dev, "Adjust the trip points and try again\n");
910 }
911 return err;
912 }
913
914 static ssize_t set_pwm_enable(struct device *dev,
915 struct device_attribute *attr, const char *buf, size_t count)
916 {
917 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
918 int nr = sensor_attr->index;
919
920 struct it87_data *data = dev_get_drvdata(dev);
921 long val;
922
923 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
924 return -EINVAL;
925
926 /* Check trip points before switching to automatic mode */
927 if (val == 2) {
928 if (check_trip_points(dev, nr) < 0)
929 return -EINVAL;
930 }
931
932 mutex_lock(&data->update_lock);
933
934 if (val == 0) {
935 int tmp;
936 /* make sure the fan is on when in on/off mode */
937 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
938 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
939 /* set on/off mode */
940 data->fan_main_ctrl &= ~(1 << nr);
941 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
942 data->fan_main_ctrl);
943 } else {
944 if (val == 1) /* Manual mode */
945 data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
946 data->pwm_temp_map[nr] :
947 data->pwm_duty[nr];
948 else /* Automatic mode */
949 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
950 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
951 /* set SmartGuardian mode */
952 data->fan_main_ctrl |= (1 << nr);
953 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
954 data->fan_main_ctrl);
955 }
956
957 mutex_unlock(&data->update_lock);
958 return count;
959 }
960 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
961 const char *buf, size_t count)
962 {
963 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
964 int nr = sensor_attr->index;
965
966 struct it87_data *data = dev_get_drvdata(dev);
967 long val;
968
969 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
970 return -EINVAL;
971
972 mutex_lock(&data->update_lock);
973 if (has_newer_autopwm(data)) {
974 /*
975 * If we are in automatic mode, the PWM duty cycle register
976 * is read-only so we can't write the value.
977 */
978 if (data->pwm_ctrl[nr] & 0x80) {
979 mutex_unlock(&data->update_lock);
980 return -EBUSY;
981 }
982 data->pwm_duty[nr] = pwm_to_reg(data, val);
983 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
984 data->pwm_duty[nr]);
985 } else {
986 data->pwm_duty[nr] = pwm_to_reg(data, val);
987 /*
988 * If we are in manual mode, write the duty cycle immediately;
989 * otherwise, just store it for later use.
990 */
991 if (!(data->pwm_ctrl[nr] & 0x80)) {
992 data->pwm_ctrl[nr] = data->pwm_duty[nr];
993 it87_write_value(data, IT87_REG_PWM(nr),
994 data->pwm_ctrl[nr]);
995 }
996 }
997 mutex_unlock(&data->update_lock);
998 return count;
999 }
1000 static ssize_t set_pwm_freq(struct device *dev,
1001 struct device_attribute *attr, const char *buf, size_t count)
1002 {
1003 struct it87_data *data = dev_get_drvdata(dev);
1004 unsigned long val;
1005 int i;
1006
1007 if (kstrtoul(buf, 10, &val) < 0)
1008 return -EINVAL;
1009
1010 /* Search for the nearest available frequency */
1011 for (i = 0; i < 7; i++) {
1012 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
1013 break;
1014 }
1015
1016 mutex_lock(&data->update_lock);
1017 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
1018 data->fan_ctl |= i << 4;
1019 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
1020 mutex_unlock(&data->update_lock);
1021
1022 return count;
1023 }
1024 static ssize_t show_pwm_temp_map(struct device *dev,
1025 struct device_attribute *attr, char *buf)
1026 {
1027 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1028 int nr = sensor_attr->index;
1029
1030 struct it87_data *data = it87_update_device(dev);
1031 int map;
1032
1033 if (data->pwm_temp_map[nr] < 3)
1034 map = 1 << data->pwm_temp_map[nr];
1035 else
1036 map = 0; /* Should never happen */
1037 return sprintf(buf, "%d\n", map);
1038 }
1039 static ssize_t set_pwm_temp_map(struct device *dev,
1040 struct device_attribute *attr, const char *buf, size_t count)
1041 {
1042 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1043 int nr = sensor_attr->index;
1044
1045 struct it87_data *data = dev_get_drvdata(dev);
1046 long val;
1047 u8 reg;
1048
1049 /*
1050 * This check can go away if we ever support automatic fan speed
1051 * control on newer chips.
1052 */
1053 if (!has_old_autopwm(data)) {
1054 dev_notice(dev, "Mapping change disabled for safety reasons\n");
1055 return -EINVAL;
1056 }
1057
1058 if (kstrtol(buf, 10, &val) < 0)
1059 return -EINVAL;
1060
1061 switch (val) {
1062 case (1 << 0):
1063 reg = 0x00;
1064 break;
1065 case (1 << 1):
1066 reg = 0x01;
1067 break;
1068 case (1 << 2):
1069 reg = 0x02;
1070 break;
1071 default:
1072 return -EINVAL;
1073 }
1074
1075 mutex_lock(&data->update_lock);
1076 data->pwm_temp_map[nr] = reg;
1077 /*
1078 * If we are in automatic mode, write the temp mapping immediately;
1079 * otherwise, just store it for later use.
1080 */
1081 if (data->pwm_ctrl[nr] & 0x80) {
1082 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1083 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1084 }
1085 mutex_unlock(&data->update_lock);
1086 return count;
1087 }
1088
1089 static ssize_t show_auto_pwm(struct device *dev,
1090 struct device_attribute *attr, char *buf)
1091 {
1092 struct it87_data *data = it87_update_device(dev);
1093 struct sensor_device_attribute_2 *sensor_attr =
1094 to_sensor_dev_attr_2(attr);
1095 int nr = sensor_attr->nr;
1096 int point = sensor_attr->index;
1097
1098 return sprintf(buf, "%d\n",
1099 pwm_from_reg(data, data->auto_pwm[nr][point]));
1100 }
1101
1102 static ssize_t set_auto_pwm(struct device *dev,
1103 struct device_attribute *attr, const char *buf, size_t count)
1104 {
1105 struct it87_data *data = dev_get_drvdata(dev);
1106 struct sensor_device_attribute_2 *sensor_attr =
1107 to_sensor_dev_attr_2(attr);
1108 int nr = sensor_attr->nr;
1109 int point = sensor_attr->index;
1110 long val;
1111
1112 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1113 return -EINVAL;
1114
1115 mutex_lock(&data->update_lock);
1116 data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1117 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1118 data->auto_pwm[nr][point]);
1119 mutex_unlock(&data->update_lock);
1120 return count;
1121 }
1122
1123 static ssize_t show_auto_temp(struct device *dev,
1124 struct device_attribute *attr, char *buf)
1125 {
1126 struct it87_data *data = it87_update_device(dev);
1127 struct sensor_device_attribute_2 *sensor_attr =
1128 to_sensor_dev_attr_2(attr);
1129 int nr = sensor_attr->nr;
1130 int point = sensor_attr->index;
1131
1132 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1133 }
1134
1135 static ssize_t set_auto_temp(struct device *dev,
1136 struct device_attribute *attr, const char *buf, size_t count)
1137 {
1138 struct it87_data *data = dev_get_drvdata(dev);
1139 struct sensor_device_attribute_2 *sensor_attr =
1140 to_sensor_dev_attr_2(attr);
1141 int nr = sensor_attr->nr;
1142 int point = sensor_attr->index;
1143 long val;
1144
1145 if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1146 return -EINVAL;
1147
1148 mutex_lock(&data->update_lock);
1149 data->auto_temp[nr][point] = TEMP_TO_REG(val);
1150 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1151 data->auto_temp[nr][point]);
1152 mutex_unlock(&data->update_lock);
1153 return count;
1154 }
1155
1156 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1157 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1158 0, 1);
1159 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1160 set_fan_div, 0);
1161
1162 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1163 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1164 1, 1);
1165 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1166 set_fan_div, 1);
1167
1168 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1169 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1170 2, 1);
1171 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1172 set_fan_div, 2);
1173
1174 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1175 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1176 3, 1);
1177
1178 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1179 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1180 4, 1);
1181
1182 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1183 show_pwm_enable, set_pwm_enable, 0);
1184 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1185 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
1186 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1187 show_pwm_temp_map, set_pwm_temp_map, 0);
1188 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1189 show_auto_pwm, set_auto_pwm, 0, 0);
1190 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1191 show_auto_pwm, set_auto_pwm, 0, 1);
1192 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1193 show_auto_pwm, set_auto_pwm, 0, 2);
1194 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1195 show_auto_pwm, NULL, 0, 3);
1196 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1197 show_auto_temp, set_auto_temp, 0, 1);
1198 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1199 show_auto_temp, set_auto_temp, 0, 0);
1200 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1201 show_auto_temp, set_auto_temp, 0, 2);
1202 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1203 show_auto_temp, set_auto_temp, 0, 3);
1204 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1205 show_auto_temp, set_auto_temp, 0, 4);
1206
1207 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1208 show_pwm_enable, set_pwm_enable, 1);
1209 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1210 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL);
1211 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1212 show_pwm_temp_map, set_pwm_temp_map, 1);
1213 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1214 show_auto_pwm, set_auto_pwm, 1, 0);
1215 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1216 show_auto_pwm, set_auto_pwm, 1, 1);
1217 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1218 show_auto_pwm, set_auto_pwm, 1, 2);
1219 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1220 show_auto_pwm, NULL, 1, 3);
1221 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1222 show_auto_temp, set_auto_temp, 1, 1);
1223 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1224 show_auto_temp, set_auto_temp, 1, 0);
1225 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1226 show_auto_temp, set_auto_temp, 1, 2);
1227 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1228 show_auto_temp, set_auto_temp, 1, 3);
1229 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1230 show_auto_temp, set_auto_temp, 1, 4);
1231
1232 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1233 show_pwm_enable, set_pwm_enable, 2);
1234 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1235 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL);
1236 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1237 show_pwm_temp_map, set_pwm_temp_map, 2);
1238 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1239 show_auto_pwm, set_auto_pwm, 2, 0);
1240 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1241 show_auto_pwm, set_auto_pwm, 2, 1);
1242 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1243 show_auto_pwm, set_auto_pwm, 2, 2);
1244 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1245 show_auto_pwm, NULL, 2, 3);
1246 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1247 show_auto_temp, set_auto_temp, 2, 1);
1248 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1249 show_auto_temp, set_auto_temp, 2, 0);
1250 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1251 show_auto_temp, set_auto_temp, 2, 2);
1252 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1253 show_auto_temp, set_auto_temp, 2, 3);
1254 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1255 show_auto_temp, set_auto_temp, 2, 4);
1256
1257 /* Alarms */
1258 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1259 char *buf)
1260 {
1261 struct it87_data *data = it87_update_device(dev);
1262 return sprintf(buf, "%u\n", data->alarms);
1263 }
1264 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1265
1266 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1267 char *buf)
1268 {
1269 int bitnr = to_sensor_dev_attr(attr)->index;
1270 struct it87_data *data = it87_update_device(dev);
1271 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1272 }
1273
1274 static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1275 *attr, const char *buf, size_t count)
1276 {
1277 struct it87_data *data = dev_get_drvdata(dev);
1278 long val;
1279 int config;
1280
1281 if (kstrtol(buf, 10, &val) < 0 || val != 0)
1282 return -EINVAL;
1283
1284 mutex_lock(&data->update_lock);
1285 config = it87_read_value(data, IT87_REG_CONFIG);
1286 if (config < 0) {
1287 count = config;
1288 } else {
1289 config |= 1 << 5;
1290 it87_write_value(data, IT87_REG_CONFIG, config);
1291 /* Invalidate cache to force re-read */
1292 data->valid = 0;
1293 }
1294 mutex_unlock(&data->update_lock);
1295
1296 return count;
1297 }
1298
1299 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1300 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1301 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1302 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1303 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1304 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1305 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1306 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1307 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1308 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1309 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1310 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1311 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1312 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1313 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1314 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1315 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1316 show_alarm, clear_intrusion, 4);
1317
1318 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1319 char *buf)
1320 {
1321 int bitnr = to_sensor_dev_attr(attr)->index;
1322 struct it87_data *data = it87_update_device(dev);
1323 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1324 }
1325 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1326 const char *buf, size_t count)
1327 {
1328 int bitnr = to_sensor_dev_attr(attr)->index;
1329 struct it87_data *data = dev_get_drvdata(dev);
1330 long val;
1331
1332 if (kstrtol(buf, 10, &val) < 0
1333 || (val != 0 && val != 1))
1334 return -EINVAL;
1335
1336 mutex_lock(&data->update_lock);
1337 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1338 if (val)
1339 data->beeps |= (1 << bitnr);
1340 else
1341 data->beeps &= ~(1 << bitnr);
1342 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1343 mutex_unlock(&data->update_lock);
1344 return count;
1345 }
1346
1347 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1348 show_beep, set_beep, 1);
1349 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1350 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1351 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1352 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1353 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1354 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1355 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1356 /* fanX_beep writability is set later */
1357 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1358 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1359 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1360 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1361 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1362 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1363 show_beep, set_beep, 2);
1364 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1365 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1366
1367 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1368 char *buf)
1369 {
1370 struct it87_data *data = dev_get_drvdata(dev);
1371 return sprintf(buf, "%u\n", data->vrm);
1372 }
1373 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1374 const char *buf, size_t count)
1375 {
1376 struct it87_data *data = dev_get_drvdata(dev);
1377 unsigned long val;
1378
1379 if (kstrtoul(buf, 10, &val) < 0)
1380 return -EINVAL;
1381
1382 data->vrm = val;
1383
1384 return count;
1385 }
1386 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1387
1388 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1389 char *buf)
1390 {
1391 struct it87_data *data = it87_update_device(dev);
1392 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1393 }
1394 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1395
1396 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1397 char *buf)
1398 {
1399 static const char * const labels[] = {
1400 "+5V",
1401 "5VSB",
1402 "Vbat",
1403 };
1404 static const char * const labels_it8721[] = {
1405 "+3.3V",
1406 "3VSB",
1407 "Vbat",
1408 };
1409 struct it87_data *data = dev_get_drvdata(dev);
1410 int nr = to_sensor_dev_attr(attr)->index;
1411
1412 return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1413 : labels[nr]);
1414 }
1415 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1416 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1417 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1418
1419 static ssize_t show_name(struct device *dev, struct device_attribute
1420 *devattr, char *buf)
1421 {
1422 struct it87_data *data = dev_get_drvdata(dev);
1423 return sprintf(buf, "%s\n", data->name);
1424 }
1425 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1426
1427 static struct attribute *it87_attributes_in[9][5] = {
1428 {
1429 &sensor_dev_attr_in0_input.dev_attr.attr,
1430 &sensor_dev_attr_in0_min.dev_attr.attr,
1431 &sensor_dev_attr_in0_max.dev_attr.attr,
1432 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1433 NULL
1434 }, {
1435 &sensor_dev_attr_in1_input.dev_attr.attr,
1436 &sensor_dev_attr_in1_min.dev_attr.attr,
1437 &sensor_dev_attr_in1_max.dev_attr.attr,
1438 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1439 NULL
1440 }, {
1441 &sensor_dev_attr_in2_input.dev_attr.attr,
1442 &sensor_dev_attr_in2_min.dev_attr.attr,
1443 &sensor_dev_attr_in2_max.dev_attr.attr,
1444 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1445 NULL
1446 }, {
1447 &sensor_dev_attr_in3_input.dev_attr.attr,
1448 &sensor_dev_attr_in3_min.dev_attr.attr,
1449 &sensor_dev_attr_in3_max.dev_attr.attr,
1450 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1451 NULL
1452 }, {
1453 &sensor_dev_attr_in4_input.dev_attr.attr,
1454 &sensor_dev_attr_in4_min.dev_attr.attr,
1455 &sensor_dev_attr_in4_max.dev_attr.attr,
1456 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1457 NULL
1458 }, {
1459 &sensor_dev_attr_in5_input.dev_attr.attr,
1460 &sensor_dev_attr_in5_min.dev_attr.attr,
1461 &sensor_dev_attr_in5_max.dev_attr.attr,
1462 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1463 NULL
1464 }, {
1465 &sensor_dev_attr_in6_input.dev_attr.attr,
1466 &sensor_dev_attr_in6_min.dev_attr.attr,
1467 &sensor_dev_attr_in6_max.dev_attr.attr,
1468 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1469 NULL
1470 }, {
1471 &sensor_dev_attr_in7_input.dev_attr.attr,
1472 &sensor_dev_attr_in7_min.dev_attr.attr,
1473 &sensor_dev_attr_in7_max.dev_attr.attr,
1474 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1475 NULL
1476 }, {
1477 &sensor_dev_attr_in8_input.dev_attr.attr,
1478 NULL
1479 } };
1480
1481 static const struct attribute_group it87_group_in[9] = {
1482 { .attrs = it87_attributes_in[0] },
1483 { .attrs = it87_attributes_in[1] },
1484 { .attrs = it87_attributes_in[2] },
1485 { .attrs = it87_attributes_in[3] },
1486 { .attrs = it87_attributes_in[4] },
1487 { .attrs = it87_attributes_in[5] },
1488 { .attrs = it87_attributes_in[6] },
1489 { .attrs = it87_attributes_in[7] },
1490 { .attrs = it87_attributes_in[8] },
1491 };
1492
1493 static struct attribute *it87_attributes_temp[3][6] = {
1494 {
1495 &sensor_dev_attr_temp1_input.dev_attr.attr,
1496 &sensor_dev_attr_temp1_max.dev_attr.attr,
1497 &sensor_dev_attr_temp1_min.dev_attr.attr,
1498 &sensor_dev_attr_temp1_type.dev_attr.attr,
1499 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1500 NULL
1501 } , {
1502 &sensor_dev_attr_temp2_input.dev_attr.attr,
1503 &sensor_dev_attr_temp2_max.dev_attr.attr,
1504 &sensor_dev_attr_temp2_min.dev_attr.attr,
1505 &sensor_dev_attr_temp2_type.dev_attr.attr,
1506 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1507 NULL
1508 } , {
1509 &sensor_dev_attr_temp3_input.dev_attr.attr,
1510 &sensor_dev_attr_temp3_max.dev_attr.attr,
1511 &sensor_dev_attr_temp3_min.dev_attr.attr,
1512 &sensor_dev_attr_temp3_type.dev_attr.attr,
1513 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1514 NULL
1515 } };
1516
1517 static const struct attribute_group it87_group_temp[3] = {
1518 { .attrs = it87_attributes_temp[0] },
1519 { .attrs = it87_attributes_temp[1] },
1520 { .attrs = it87_attributes_temp[2] },
1521 };
1522
1523 static struct attribute *it87_attributes_temp_offset[] = {
1524 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1525 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1526 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1527 };
1528
1529 static struct attribute *it87_attributes[] = {
1530 &dev_attr_alarms.attr,
1531 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1532 &dev_attr_name.attr,
1533 NULL
1534 };
1535
1536 static const struct attribute_group it87_group = {
1537 .attrs = it87_attributes,
1538 };
1539
1540 static struct attribute *it87_attributes_in_beep[] = {
1541 &sensor_dev_attr_in0_beep.dev_attr.attr,
1542 &sensor_dev_attr_in1_beep.dev_attr.attr,
1543 &sensor_dev_attr_in2_beep.dev_attr.attr,
1544 &sensor_dev_attr_in3_beep.dev_attr.attr,
1545 &sensor_dev_attr_in4_beep.dev_attr.attr,
1546 &sensor_dev_attr_in5_beep.dev_attr.attr,
1547 &sensor_dev_attr_in6_beep.dev_attr.attr,
1548 &sensor_dev_attr_in7_beep.dev_attr.attr,
1549 NULL
1550 };
1551
1552 static struct attribute *it87_attributes_temp_beep[] = {
1553 &sensor_dev_attr_temp1_beep.dev_attr.attr,
1554 &sensor_dev_attr_temp2_beep.dev_attr.attr,
1555 &sensor_dev_attr_temp3_beep.dev_attr.attr,
1556 };
1557
1558 static struct attribute *it87_attributes_fan[5][3+1] = { {
1559 &sensor_dev_attr_fan1_input.dev_attr.attr,
1560 &sensor_dev_attr_fan1_min.dev_attr.attr,
1561 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1562 NULL
1563 }, {
1564 &sensor_dev_attr_fan2_input.dev_attr.attr,
1565 &sensor_dev_attr_fan2_min.dev_attr.attr,
1566 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1567 NULL
1568 }, {
1569 &sensor_dev_attr_fan3_input.dev_attr.attr,
1570 &sensor_dev_attr_fan3_min.dev_attr.attr,
1571 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1572 NULL
1573 }, {
1574 &sensor_dev_attr_fan4_input.dev_attr.attr,
1575 &sensor_dev_attr_fan4_min.dev_attr.attr,
1576 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1577 NULL
1578 }, {
1579 &sensor_dev_attr_fan5_input.dev_attr.attr,
1580 &sensor_dev_attr_fan5_min.dev_attr.attr,
1581 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1582 NULL
1583 } };
1584
1585 static const struct attribute_group it87_group_fan[5] = {
1586 { .attrs = it87_attributes_fan[0] },
1587 { .attrs = it87_attributes_fan[1] },
1588 { .attrs = it87_attributes_fan[2] },
1589 { .attrs = it87_attributes_fan[3] },
1590 { .attrs = it87_attributes_fan[4] },
1591 };
1592
1593 static const struct attribute *it87_attributes_fan_div[] = {
1594 &sensor_dev_attr_fan1_div.dev_attr.attr,
1595 &sensor_dev_attr_fan2_div.dev_attr.attr,
1596 &sensor_dev_attr_fan3_div.dev_attr.attr,
1597 };
1598
1599 static struct attribute *it87_attributes_pwm[3][4+1] = { {
1600 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1601 &sensor_dev_attr_pwm1.dev_attr.attr,
1602 &dev_attr_pwm1_freq.attr,
1603 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1604 NULL
1605 }, {
1606 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1607 &sensor_dev_attr_pwm2.dev_attr.attr,
1608 &dev_attr_pwm2_freq.attr,
1609 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1610 NULL
1611 }, {
1612 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1613 &sensor_dev_attr_pwm3.dev_attr.attr,
1614 &dev_attr_pwm3_freq.attr,
1615 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1616 NULL
1617 } };
1618
1619 static const struct attribute_group it87_group_pwm[3] = {
1620 { .attrs = it87_attributes_pwm[0] },
1621 { .attrs = it87_attributes_pwm[1] },
1622 { .attrs = it87_attributes_pwm[2] },
1623 };
1624
1625 static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1626 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1627 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1628 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1629 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1630 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1631 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1632 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1633 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1634 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1635 NULL
1636 }, {
1637 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1638 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1639 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1640 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1641 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1642 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1643 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1644 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1645 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1646 NULL
1647 }, {
1648 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1649 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1650 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1651 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1652 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1653 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1654 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1655 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1656 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1657 NULL
1658 } };
1659
1660 static const struct attribute_group it87_group_autopwm[3] = {
1661 { .attrs = it87_attributes_autopwm[0] },
1662 { .attrs = it87_attributes_autopwm[1] },
1663 { .attrs = it87_attributes_autopwm[2] },
1664 };
1665
1666 static struct attribute *it87_attributes_fan_beep[] = {
1667 &sensor_dev_attr_fan1_beep.dev_attr.attr,
1668 &sensor_dev_attr_fan2_beep.dev_attr.attr,
1669 &sensor_dev_attr_fan3_beep.dev_attr.attr,
1670 &sensor_dev_attr_fan4_beep.dev_attr.attr,
1671 &sensor_dev_attr_fan5_beep.dev_attr.attr,
1672 };
1673
1674 static struct attribute *it87_attributes_vid[] = {
1675 &dev_attr_vrm.attr,
1676 &dev_attr_cpu0_vid.attr,
1677 NULL
1678 };
1679
1680 static const struct attribute_group it87_group_vid = {
1681 .attrs = it87_attributes_vid,
1682 };
1683
1684 static struct attribute *it87_attributes_label[] = {
1685 &sensor_dev_attr_in3_label.dev_attr.attr,
1686 &sensor_dev_attr_in7_label.dev_attr.attr,
1687 &sensor_dev_attr_in8_label.dev_attr.attr,
1688 NULL
1689 };
1690
1691 static const struct attribute_group it87_group_label = {
1692 .attrs = it87_attributes_label,
1693 };
1694
1695 /* SuperIO detection - will change isa_address if a chip is found */
1696 static int __init it87_find(unsigned short *address,
1697 struct it87_sio_data *sio_data)
1698 {
1699 int err;
1700 u16 chip_type;
1701 const char *board_vendor, *board_name;
1702
1703 err = superio_enter();
1704 if (err)
1705 return err;
1706
1707 err = -ENODEV;
1708 chip_type = force_id ? force_id : superio_inw(DEVID);
1709
1710 switch (chip_type) {
1711 case IT8705F_DEVID:
1712 sio_data->type = it87;
1713 break;
1714 case IT8712F_DEVID:
1715 sio_data->type = it8712;
1716 break;
1717 case IT8716F_DEVID:
1718 case IT8726F_DEVID:
1719 sio_data->type = it8716;
1720 break;
1721 case IT8718F_DEVID:
1722 sio_data->type = it8718;
1723 break;
1724 case IT8720F_DEVID:
1725 sio_data->type = it8720;
1726 break;
1727 case IT8721F_DEVID:
1728 sio_data->type = it8721;
1729 break;
1730 case IT8728F_DEVID:
1731 sio_data->type = it8728;
1732 break;
1733 case IT8771E_DEVID:
1734 sio_data->type = it8771;
1735 break;
1736 case IT8772E_DEVID:
1737 sio_data->type = it8772;
1738 break;
1739 case IT8782F_DEVID:
1740 sio_data->type = it8782;
1741 break;
1742 case IT8783E_DEVID:
1743 sio_data->type = it8783;
1744 break;
1745 case 0xffff: /* No device at all */
1746 goto exit;
1747 default:
1748 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1749 goto exit;
1750 }
1751
1752 superio_select(PME);
1753 if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1754 pr_info("Device not activated, skipping\n");
1755 goto exit;
1756 }
1757
1758 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1759 if (*address == 0) {
1760 pr_info("Base address not set, skipping\n");
1761 goto exit;
1762 }
1763
1764 err = 0;
1765 sio_data->revision = superio_inb(DEVREV) & 0x0f;
1766 pr_info("Found IT%04xF chip at 0x%x, revision %d\n",
1767 chip_type, *address, sio_data->revision);
1768
1769 /* in8 (Vbat) is always internal */
1770 sio_data->internal = (1 << 2);
1771
1772 /* Read GPIO config and VID value from LDN 7 (GPIO) */
1773 if (sio_data->type == it87) {
1774 /* The IT8705F doesn't have VID pins at all */
1775 sio_data->skip_vid = 1;
1776
1777 /* The IT8705F has a different LD number for GPIO */
1778 superio_select(5);
1779 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1780 } else if (sio_data->type == it8783) {
1781 int reg25, reg27, reg2a, reg2c, regef;
1782
1783 sio_data->skip_vid = 1; /* No VID */
1784
1785 superio_select(GPIO);
1786
1787 reg25 = superio_inb(IT87_SIO_GPIO1_REG);
1788 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1789 reg2a = superio_inb(IT87_SIO_PINX1_REG);
1790 reg2c = superio_inb(IT87_SIO_PINX2_REG);
1791 regef = superio_inb(IT87_SIO_SPI_REG);
1792
1793 /* Check if fan3 is there or not */
1794 if ((reg27 & (1 << 0)) || !(reg2c & (1 << 2)))
1795 sio_data->skip_fan |= (1 << 2);
1796 if ((reg25 & (1 << 4))
1797 || (!(reg2a & (1 << 1)) && (regef & (1 << 0))))
1798 sio_data->skip_pwm |= (1 << 2);
1799
1800 /* Check if fan2 is there or not */
1801 if (reg27 & (1 << 7))
1802 sio_data->skip_fan |= (1 << 1);
1803 if (reg27 & (1 << 3))
1804 sio_data->skip_pwm |= (1 << 1);
1805
1806 /* VIN5 */
1807 if ((reg27 & (1 << 0)) || (reg2c & (1 << 2)))
1808 sio_data->skip_in |= (1 << 5); /* No VIN5 */
1809
1810 /* VIN6 */
1811 if (reg27 & (1 << 1))
1812 sio_data->skip_in |= (1 << 6); /* No VIN6 */
1813
1814 /*
1815 * VIN7
1816 * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1817 */
1818 if (reg27 & (1 << 2)) {
1819 /*
1820 * The data sheet is a bit unclear regarding the
1821 * internal voltage divider for VCCH5V. It says
1822 * "This bit enables and switches VIN7 (pin 91) to the
1823 * internal voltage divider for VCCH5V".
1824 * This is different to other chips, where the internal
1825 * voltage divider would connect VIN7 to an internal
1826 * voltage source. Maybe that is the case here as well.
1827 *
1828 * Since we don't know for sure, re-route it if that is
1829 * not the case, and ask the user to report if the
1830 * resulting voltage is sane.
1831 */
1832 if (!(reg2c & (1 << 1))) {
1833 reg2c |= (1 << 1);
1834 superio_outb(IT87_SIO_PINX2_REG, reg2c);
1835 pr_notice("Routing internal VCCH5V to in7.\n");
1836 }
1837 pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1838 pr_notice("Please report if it displays a reasonable voltage.\n");
1839 }
1840
1841 if (reg2c & (1 << 0))
1842 sio_data->internal |= (1 << 0);
1843 if (reg2c & (1 << 1))
1844 sio_data->internal |= (1 << 1);
1845
1846 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1847
1848 } else {
1849 int reg;
1850 bool uart6;
1851
1852 superio_select(GPIO);
1853
1854 reg = superio_inb(IT87_SIO_GPIO3_REG);
1855 if (sio_data->type == it8721 || sio_data->type == it8728 ||
1856 sio_data->type == it8771 || sio_data->type == it8772 ||
1857 sio_data->type == it8782) {
1858 /*
1859 * IT8721F/IT8758E, and IT8782F don't have VID pins
1860 * at all, not sure about the IT8728F and compatibles.
1861 */
1862 sio_data->skip_vid = 1;
1863 } else {
1864 /* We need at least 4 VID pins */
1865 if (reg & 0x0f) {
1866 pr_info("VID is disabled (pins used for GPIO)\n");
1867 sio_data->skip_vid = 1;
1868 }
1869 }
1870
1871 /* Check if fan3 is there or not */
1872 if (reg & (1 << 6))
1873 sio_data->skip_pwm |= (1 << 2);
1874 if (reg & (1 << 7))
1875 sio_data->skip_fan |= (1 << 2);
1876
1877 /* Check if fan2 is there or not */
1878 reg = superio_inb(IT87_SIO_GPIO5_REG);
1879 if (reg & (1 << 1))
1880 sio_data->skip_pwm |= (1 << 1);
1881 if (reg & (1 << 2))
1882 sio_data->skip_fan |= (1 << 1);
1883
1884 if ((sio_data->type == it8718 || sio_data->type == it8720)
1885 && !(sio_data->skip_vid))
1886 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
1887
1888 reg = superio_inb(IT87_SIO_PINX2_REG);
1889
1890 uart6 = sio_data->type == it8782 && (reg & (1 << 2));
1891
1892 /*
1893 * The IT8720F has no VIN7 pin, so VCCH should always be
1894 * routed internally to VIN7 with an internal divider.
1895 * Curiously, there still is a configuration bit to control
1896 * this, which means it can be set incorrectly. And even
1897 * more curiously, many boards out there are improperly
1898 * configured, even though the IT8720F datasheet claims
1899 * that the internal routing of VCCH to VIN7 is the default
1900 * setting. So we force the internal routing in this case.
1901 *
1902 * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
1903 * If UART6 is enabled, re-route VIN7 to the internal divider
1904 * if that is not already the case.
1905 */
1906 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
1907 reg |= (1 << 1);
1908 superio_outb(IT87_SIO_PINX2_REG, reg);
1909 pr_notice("Routing internal VCCH to in7\n");
1910 }
1911 if (reg & (1 << 0))
1912 sio_data->internal |= (1 << 0);
1913 if ((reg & (1 << 1)) || sio_data->type == it8721 ||
1914 sio_data->type == it8728 ||
1915 sio_data->type == it8771 ||
1916 sio_data->type == it8772)
1917 sio_data->internal |= (1 << 1);
1918
1919 /*
1920 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
1921 * While VIN7 can be routed to the internal voltage divider,
1922 * VIN5 and VIN6 are not available if UART6 is enabled.
1923 *
1924 * Also, temp3 is not available if UART6 is enabled and TEMPIN3
1925 * is the temperature source. Since we can not read the
1926 * temperature source here, skip_temp is preliminary.
1927 */
1928 if (uart6) {
1929 sio_data->skip_in |= (1 << 5) | (1 << 6);
1930 sio_data->skip_temp |= (1 << 2);
1931 }
1932
1933 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1934 }
1935 if (sio_data->beep_pin)
1936 pr_info("Beeping is supported\n");
1937
1938 /* Disable specific features based on DMI strings */
1939 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1940 board_name = dmi_get_system_info(DMI_BOARD_NAME);
1941 if (board_vendor && board_name) {
1942 if (strcmp(board_vendor, "nVIDIA") == 0
1943 && strcmp(board_name, "FN68PT") == 0) {
1944 /*
1945 * On the Shuttle SN68PT, FAN_CTL2 is apparently not
1946 * connected to a fan, but to something else. One user
1947 * has reported instant system power-off when changing
1948 * the PWM2 duty cycle, so we disable it.
1949 * I use the board name string as the trigger in case
1950 * the same board is ever used in other systems.
1951 */
1952 pr_info("Disabling pwm2 due to hardware constraints\n");
1953 sio_data->skip_pwm = (1 << 1);
1954 }
1955 }
1956
1957 exit:
1958 superio_exit();
1959 return err;
1960 }
1961
1962 static void it87_remove_files(struct device *dev)
1963 {
1964 struct it87_data *data = platform_get_drvdata(pdev);
1965 struct it87_sio_data *sio_data = dev->platform_data;
1966 int i;
1967
1968 sysfs_remove_group(&dev->kobj, &it87_group);
1969 for (i = 0; i < 9; i++) {
1970 if (sio_data->skip_in & (1 << i))
1971 continue;
1972 sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
1973 if (it87_attributes_in_beep[i])
1974 sysfs_remove_file(&dev->kobj,
1975 it87_attributes_in_beep[i]);
1976 }
1977 for (i = 0; i < 3; i++) {
1978 if (!(data->has_temp & (1 << i)))
1979 continue;
1980 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
1981 if (has_temp_offset(data))
1982 sysfs_remove_file(&dev->kobj,
1983 it87_attributes_temp_offset[i]);
1984 if (sio_data->beep_pin)
1985 sysfs_remove_file(&dev->kobj,
1986 it87_attributes_temp_beep[i]);
1987 }
1988 for (i = 0; i < 5; i++) {
1989 if (!(data->has_fan & (1 << i)))
1990 continue;
1991 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
1992 if (sio_data->beep_pin)
1993 sysfs_remove_file(&dev->kobj,
1994 it87_attributes_fan_beep[i]);
1995 if (i < 3 && !has_16bit_fans(data))
1996 sysfs_remove_file(&dev->kobj,
1997 it87_attributes_fan_div[i]);
1998 }
1999 for (i = 0; i < 3; i++) {
2000 if (sio_data->skip_pwm & (1 << 0))
2001 continue;
2002 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
2003 if (has_old_autopwm(data))
2004 sysfs_remove_group(&dev->kobj,
2005 &it87_group_autopwm[i]);
2006 }
2007 if (!sio_data->skip_vid)
2008 sysfs_remove_group(&dev->kobj, &it87_group_vid);
2009 sysfs_remove_group(&dev->kobj, &it87_group_label);
2010 }
2011
2012 static int it87_probe(struct platform_device *pdev)
2013 {
2014 struct it87_data *data;
2015 struct resource *res;
2016 struct device *dev = &pdev->dev;
2017 struct it87_sio_data *sio_data = dev->platform_data;
2018 int err = 0, i;
2019 int enable_pwm_interface;
2020 int fan_beep_need_rw;
2021
2022 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2023 if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
2024 DRVNAME)) {
2025 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
2026 (unsigned long)res->start,
2027 (unsigned long)(res->start + IT87_EC_EXTENT - 1));
2028 return -EBUSY;
2029 }
2030
2031 data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
2032 if (!data)
2033 return -ENOMEM;
2034
2035 data->addr = res->start;
2036 data->type = sio_data->type;
2037 data->features = it87_devices[sio_data->type].features;
2038 data->peci_mask = it87_devices[sio_data->type].peci_mask;
2039 data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
2040 data->name = it87_devices[sio_data->type].name;
2041 /*
2042 * IT8705F Datasheet 0.4.1, 3h == Version G.
2043 * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
2044 * These are the first revisions with 16-bit tachometer support.
2045 */
2046 switch (data->type) {
2047 case it87:
2048 if (sio_data->revision >= 0x03) {
2049 data->features &= ~FEAT_OLD_AUTOPWM;
2050 data->features |= FEAT_16BIT_FANS;
2051 }
2052 break;
2053 case it8712:
2054 if (sio_data->revision >= 0x08) {
2055 data->features &= ~FEAT_OLD_AUTOPWM;
2056 data->features |= FEAT_16BIT_FANS;
2057 }
2058 break;
2059 default:
2060 break;
2061 }
2062
2063 /* Now, we do the remaining detection. */
2064 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
2065 || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
2066 return -ENODEV;
2067
2068 platform_set_drvdata(pdev, data);
2069
2070 mutex_init(&data->update_lock);
2071
2072 /* Check PWM configuration */
2073 enable_pwm_interface = it87_check_pwm(dev);
2074
2075 /* Starting with IT8721F, we handle scaling of internal voltages */
2076 if (has_12mv_adc(data)) {
2077 if (sio_data->internal & (1 << 0))
2078 data->in_scaled |= (1 << 3); /* in3 is AVCC */
2079 if (sio_data->internal & (1 << 1))
2080 data->in_scaled |= (1 << 7); /* in7 is VSB */
2081 if (sio_data->internal & (1 << 2))
2082 data->in_scaled |= (1 << 8); /* in8 is Vbat */
2083 } else if (sio_data->type == it8782 || sio_data->type == it8783) {
2084 if (sio_data->internal & (1 << 0))
2085 data->in_scaled |= (1 << 3); /* in3 is VCC5V */
2086 if (sio_data->internal & (1 << 1))
2087 data->in_scaled |= (1 << 7); /* in7 is VCCH5V */
2088 }
2089
2090 data->has_temp = 0x07;
2091 if (sio_data->skip_temp & (1 << 2)) {
2092 if (sio_data->type == it8782
2093 && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2094 data->has_temp &= ~(1 << 2);
2095 }
2096
2097 /* Initialize the IT87 chip */
2098 it87_init_device(pdev);
2099
2100 /* Register sysfs hooks */
2101 err = sysfs_create_group(&dev->kobj, &it87_group);
2102 if (err)
2103 return err;
2104
2105 for (i = 0; i < 9; i++) {
2106 if (sio_data->skip_in & (1 << i))
2107 continue;
2108 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2109 if (err)
2110 goto error;
2111 if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2112 err = sysfs_create_file(&dev->kobj,
2113 it87_attributes_in_beep[i]);
2114 if (err)
2115 goto error;
2116 }
2117 }
2118
2119 for (i = 0; i < 3; i++) {
2120 if (!(data->has_temp & (1 << i)))
2121 continue;
2122 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2123 if (err)
2124 goto error;
2125 if (has_temp_offset(data)) {
2126 err = sysfs_create_file(&dev->kobj,
2127 it87_attributes_temp_offset[i]);
2128 if (err)
2129 goto error;
2130 }
2131 if (sio_data->beep_pin) {
2132 err = sysfs_create_file(&dev->kobj,
2133 it87_attributes_temp_beep[i]);
2134 if (err)
2135 goto error;
2136 }
2137 }
2138
2139 /* Do not create fan files for disabled fans */
2140 fan_beep_need_rw = 1;
2141 for (i = 0; i < 5; i++) {
2142 if (!(data->has_fan & (1 << i)))
2143 continue;
2144 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2145 if (err)
2146 goto error;
2147
2148 if (i < 3 && !has_16bit_fans(data)) {
2149 err = sysfs_create_file(&dev->kobj,
2150 it87_attributes_fan_div[i]);
2151 if (err)
2152 goto error;
2153 }
2154
2155 if (sio_data->beep_pin) {
2156 err = sysfs_create_file(&dev->kobj,
2157 it87_attributes_fan_beep[i]);
2158 if (err)
2159 goto error;
2160 if (!fan_beep_need_rw)
2161 continue;
2162
2163 /*
2164 * As we have a single beep enable bit for all fans,
2165 * only the first enabled fan has a writable attribute
2166 * for it.
2167 */
2168 if (sysfs_chmod_file(&dev->kobj,
2169 it87_attributes_fan_beep[i],
2170 S_IRUGO | S_IWUSR))
2171 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2172 i + 1);
2173 fan_beep_need_rw = 0;
2174 }
2175 }
2176
2177 if (enable_pwm_interface) {
2178 for (i = 0; i < 3; i++) {
2179 if (sio_data->skip_pwm & (1 << i))
2180 continue;
2181 err = sysfs_create_group(&dev->kobj,
2182 &it87_group_pwm[i]);
2183 if (err)
2184 goto error;
2185
2186 if (!has_old_autopwm(data))
2187 continue;
2188 err = sysfs_create_group(&dev->kobj,
2189 &it87_group_autopwm[i]);
2190 if (err)
2191 goto error;
2192 }
2193 }
2194
2195 if (!sio_data->skip_vid) {
2196 data->vrm = vid_which_vrm();
2197 /* VID reading from Super-I/O config space if available */
2198 data->vid = sio_data->vid_value;
2199 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2200 if (err)
2201 goto error;
2202 }
2203
2204 /* Export labels for internal sensors */
2205 for (i = 0; i < 3; i++) {
2206 if (!(sio_data->internal & (1 << i)))
2207 continue;
2208 err = sysfs_create_file(&dev->kobj,
2209 it87_attributes_label[i]);
2210 if (err)
2211 goto error;
2212 }
2213
2214 data->hwmon_dev = hwmon_device_register(dev);
2215 if (IS_ERR(data->hwmon_dev)) {
2216 err = PTR_ERR(data->hwmon_dev);
2217 goto error;
2218 }
2219
2220 return 0;
2221
2222 error:
2223 it87_remove_files(dev);
2224 return err;
2225 }
2226
2227 static int it87_remove(struct platform_device *pdev)
2228 {
2229 struct it87_data *data = platform_get_drvdata(pdev);
2230
2231 hwmon_device_unregister(data->hwmon_dev);
2232 it87_remove_files(&pdev->dev);
2233
2234 return 0;
2235 }
2236
2237 /*
2238 * Must be called with data->update_lock held, except during initialization.
2239 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2240 * would slow down the IT87 access and should not be necessary.
2241 */
2242 static int it87_read_value(struct it87_data *data, u8 reg)
2243 {
2244 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2245 return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2246 }
2247
2248 /*
2249 * Must be called with data->update_lock held, except during initialization.
2250 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2251 * would slow down the IT87 access and should not be necessary.
2252 */
2253 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2254 {
2255 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2256 outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2257 }
2258
2259 /* Return 1 if and only if the PWM interface is safe to use */
2260 static int it87_check_pwm(struct device *dev)
2261 {
2262 struct it87_data *data = dev_get_drvdata(dev);
2263 /*
2264 * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2265 * and polarity set to active low is sign that this is the case so we
2266 * disable pwm control to protect the user.
2267 */
2268 int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2269 if ((tmp & 0x87) == 0) {
2270 if (fix_pwm_polarity) {
2271 /*
2272 * The user asks us to attempt a chip reconfiguration.
2273 * This means switching to active high polarity and
2274 * inverting all fan speed values.
2275 */
2276 int i;
2277 u8 pwm[3];
2278
2279 for (i = 0; i < 3; i++)
2280 pwm[i] = it87_read_value(data,
2281 IT87_REG_PWM(i));
2282
2283 /*
2284 * If any fan is in automatic pwm mode, the polarity
2285 * might be correct, as suspicious as it seems, so we
2286 * better don't change anything (but still disable the
2287 * PWM interface).
2288 */
2289 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2290 dev_info(dev,
2291 "Reconfiguring PWM to active high polarity\n");
2292 it87_write_value(data, IT87_REG_FAN_CTL,
2293 tmp | 0x87);
2294 for (i = 0; i < 3; i++)
2295 it87_write_value(data,
2296 IT87_REG_PWM(i),
2297 0x7f & ~pwm[i]);
2298 return 1;
2299 }
2300
2301 dev_info(dev,
2302 "PWM configuration is too broken to be fixed\n");
2303 }
2304
2305 dev_info(dev,
2306 "Detected broken BIOS defaults, disabling PWM interface\n");
2307 return 0;
2308 } else if (fix_pwm_polarity) {
2309 dev_info(dev,
2310 "PWM configuration looks sane, won't touch\n");
2311 }
2312
2313 return 1;
2314 }
2315
2316 /* Called when we have found a new IT87. */
2317 static void it87_init_device(struct platform_device *pdev)
2318 {
2319 struct it87_sio_data *sio_data = pdev->dev.platform_data;
2320 struct it87_data *data = platform_get_drvdata(pdev);
2321 int tmp, i;
2322 u8 mask;
2323
2324 /*
2325 * For each PWM channel:
2326 * - If it is in automatic mode, setting to manual mode should set
2327 * the fan to full speed by default.
2328 * - If it is in manual mode, we need a mapping to temperature
2329 * channels to use when later setting to automatic mode later.
2330 * Use a 1:1 mapping by default (we are clueless.)
2331 * In both cases, the value can (and should) be changed by the user
2332 * prior to switching to a different mode.
2333 * Note that this is no longer needed for the IT8721F and later, as
2334 * these have separate registers for the temperature mapping and the
2335 * manual duty cycle.
2336 */
2337 for (i = 0; i < 3; i++) {
2338 data->pwm_temp_map[i] = i;
2339 data->pwm_duty[i] = 0x7f; /* Full speed */
2340 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */
2341 }
2342
2343 /*
2344 * Some chips seem to have default value 0xff for all limit
2345 * registers. For low voltage limits it makes no sense and triggers
2346 * alarms, so change to 0 instead. For high temperature limits, it
2347 * means -1 degree C, which surprisingly doesn't trigger an alarm,
2348 * but is still confusing, so change to 127 degrees C.
2349 */
2350 for (i = 0; i < 8; i++) {
2351 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2352 if (tmp == 0xff)
2353 it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2354 }
2355 for (i = 0; i < 3; i++) {
2356 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2357 if (tmp == 0xff)
2358 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2359 }
2360
2361 /*
2362 * Temperature channels are not forcibly enabled, as they can be
2363 * set to two different sensor types and we can't guess which one
2364 * is correct for a given system. These channels can be enabled at
2365 * run-time through the temp{1-3}_type sysfs accessors if needed.
2366 */
2367
2368 /* Check if voltage monitors are reset manually or by some reason */
2369 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2370 if ((tmp & 0xff) == 0) {
2371 /* Enable all voltage monitors */
2372 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2373 }
2374
2375 /* Check if tachometers are reset manually or by some reason */
2376 mask = 0x70 & ~(sio_data->skip_fan << 4);
2377 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2378 if ((data->fan_main_ctrl & mask) == 0) {
2379 /* Enable all fan tachometers */
2380 data->fan_main_ctrl |= mask;
2381 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2382 data->fan_main_ctrl);
2383 }
2384 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2385
2386 /* Set tachometers to 16-bit mode if needed */
2387 if (has_16bit_fans(data)) {
2388 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2389 if (~tmp & 0x07 & data->has_fan) {
2390 dev_dbg(&pdev->dev,
2391 "Setting fan1-3 to 16-bit mode\n");
2392 it87_write_value(data, IT87_REG_FAN_16BIT,
2393 tmp | 0x07);
2394 }
2395 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
2396 if (data->type != it87 && data->type != it8782 &&
2397 data->type != it8783) {
2398 if (tmp & (1 << 4))
2399 data->has_fan |= (1 << 3); /* fan4 enabled */
2400 if (tmp & (1 << 5))
2401 data->has_fan |= (1 << 4); /* fan5 enabled */
2402 }
2403 }
2404
2405 /* Fan input pins may be used for alternative functions */
2406 data->has_fan &= ~sio_data->skip_fan;
2407
2408 /* Start monitoring */
2409 it87_write_value(data, IT87_REG_CONFIG,
2410 (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2411 | (update_vbat ? 0x41 : 0x01));
2412 }
2413
2414 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2415 {
2416 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2417 if (has_newer_autopwm(data)) {
2418 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2419 data->pwm_duty[nr] = it87_read_value(data,
2420 IT87_REG_PWM_DUTY(nr));
2421 } else {
2422 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
2423 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2424 else /* Manual mode */
2425 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2426 }
2427
2428 if (has_old_autopwm(data)) {
2429 int i;
2430
2431 for (i = 0; i < 5 ; i++)
2432 data->auto_temp[nr][i] = it87_read_value(data,
2433 IT87_REG_AUTO_TEMP(nr, i));
2434 for (i = 0; i < 3 ; i++)
2435 data->auto_pwm[nr][i] = it87_read_value(data,
2436 IT87_REG_AUTO_PWM(nr, i));
2437 }
2438 }
2439
2440 static struct it87_data *it87_update_device(struct device *dev)
2441 {
2442 struct it87_data *data = dev_get_drvdata(dev);
2443 int i;
2444
2445 mutex_lock(&data->update_lock);
2446
2447 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2448 || !data->valid) {
2449 if (update_vbat) {
2450 /*
2451 * Cleared after each update, so reenable. Value
2452 * returned by this read will be previous value
2453 */
2454 it87_write_value(data, IT87_REG_CONFIG,
2455 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2456 }
2457 for (i = 0; i <= 7; i++) {
2458 data->in[i][0] =
2459 it87_read_value(data, IT87_REG_VIN(i));
2460 data->in[i][1] =
2461 it87_read_value(data, IT87_REG_VIN_MIN(i));
2462 data->in[i][2] =
2463 it87_read_value(data, IT87_REG_VIN_MAX(i));
2464 }
2465 /* in8 (battery) has no limit registers */
2466 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2467
2468 for (i = 0; i < 5; i++) {
2469 /* Skip disabled fans */
2470 if (!(data->has_fan & (1 << i)))
2471 continue;
2472
2473 data->fan[i][1] =
2474 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2475 data->fan[i][0] = it87_read_value(data,
2476 IT87_REG_FAN[i]);
2477 /* Add high byte if in 16-bit mode */
2478 if (has_16bit_fans(data)) {
2479 data->fan[i][0] |= it87_read_value(data,
2480 IT87_REG_FANX[i]) << 8;
2481 data->fan[i][1] |= it87_read_value(data,
2482 IT87_REG_FANX_MIN[i]) << 8;
2483 }
2484 }
2485 for (i = 0; i < 3; i++) {
2486 if (!(data->has_temp & (1 << i)))
2487 continue;
2488 data->temp[i][0] =
2489 it87_read_value(data, IT87_REG_TEMP(i));
2490 data->temp[i][1] =
2491 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2492 data->temp[i][2] =
2493 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2494 if (has_temp_offset(data))
2495 data->temp[i][3] =
2496 it87_read_value(data,
2497 IT87_REG_TEMP_OFFSET[i]);
2498 }
2499
2500 /* Newer chips don't have clock dividers */
2501 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2502 i = it87_read_value(data, IT87_REG_FAN_DIV);
2503 data->fan_div[0] = i & 0x07;
2504 data->fan_div[1] = (i >> 3) & 0x07;
2505 data->fan_div[2] = (i & 0x40) ? 3 : 1;
2506 }
2507
2508 data->alarms =
2509 it87_read_value(data, IT87_REG_ALARM1) |
2510 (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2511 (it87_read_value(data, IT87_REG_ALARM3) << 16);
2512 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2513
2514 data->fan_main_ctrl = it87_read_value(data,
2515 IT87_REG_FAN_MAIN_CTRL);
2516 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2517 for (i = 0; i < 3; i++)
2518 it87_update_pwm_ctrl(data, i);
2519
2520 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2521 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
2522 /*
2523 * The IT8705F does not have VID capability.
2524 * The IT8718F and later don't use IT87_REG_VID for the
2525 * same purpose.
2526 */
2527 if (data->type == it8712 || data->type == it8716) {
2528 data->vid = it87_read_value(data, IT87_REG_VID);
2529 /*
2530 * The older IT8712F revisions had only 5 VID pins,
2531 * but we assume it is always safe to read 6 bits.
2532 */
2533 data->vid &= 0x3f;
2534 }
2535 data->last_updated = jiffies;
2536 data->valid = 1;
2537 }
2538
2539 mutex_unlock(&data->update_lock);
2540
2541 return data;
2542 }
2543
2544 static int __init it87_device_add(unsigned short address,
2545 const struct it87_sio_data *sio_data)
2546 {
2547 struct resource res = {
2548 .start = address + IT87_EC_OFFSET,
2549 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2550 .name = DRVNAME,
2551 .flags = IORESOURCE_IO,
2552 };
2553 int err;
2554
2555 err = acpi_check_resource_conflict(&res);
2556 if (err)
2557 goto exit;
2558
2559 pdev = platform_device_alloc(DRVNAME, address);
2560 if (!pdev) {
2561 err = -ENOMEM;
2562 pr_err("Device allocation failed\n");
2563 goto exit;
2564 }
2565
2566 err = platform_device_add_resources(pdev, &res, 1);
2567 if (err) {
2568 pr_err("Device resource addition failed (%d)\n", err);
2569 goto exit_device_put;
2570 }
2571
2572 err = platform_device_add_data(pdev, sio_data,
2573 sizeof(struct it87_sio_data));
2574 if (err) {
2575 pr_err("Platform data allocation failed\n");
2576 goto exit_device_put;
2577 }
2578
2579 err = platform_device_add(pdev);
2580 if (err) {
2581 pr_err("Device addition failed (%d)\n", err);
2582 goto exit_device_put;
2583 }
2584
2585 return 0;
2586
2587 exit_device_put:
2588 platform_device_put(pdev);
2589 exit:
2590 return err;
2591 }
2592
2593 static int __init sm_it87_init(void)
2594 {
2595 int err;
2596 unsigned short isa_address = 0;
2597 struct it87_sio_data sio_data;
2598
2599 memset(&sio_data, 0, sizeof(struct it87_sio_data));
2600 err = it87_find(&isa_address, &sio_data);
2601 if (err)
2602 return err;
2603 err = platform_driver_register(&it87_driver);
2604 if (err)
2605 return err;
2606
2607 err = it87_device_add(isa_address, &sio_data);
2608 if (err) {
2609 platform_driver_unregister(&it87_driver);
2610 return err;
2611 }
2612
2613 return 0;
2614 }
2615
2616 static void __exit sm_it87_exit(void)
2617 {
2618 platform_device_unregister(pdev);
2619 platform_driver_unregister(&it87_driver);
2620 }
2621
2622
2623 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <khali@linux-fr.org>");
2624 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2625 module_param(update_vbat, bool, 0);
2626 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2627 module_param(fix_pwm_polarity, bool, 0);
2628 MODULE_PARM_DESC(fix_pwm_polarity,
2629 "Force PWM polarity to active high (DANGEROUS)");
2630 MODULE_LICENSE("GPL");
2631
2632 module_init(sm_it87_init);
2633 module_exit(sm_it87_exit);
Linux with added FPC-III support