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ARM: 7989/1: Delete asm/system.h
[linux/fpc-iii.git] / drivers / hwmon / it87.c
blob70749fc15a4f4fdf07155a995513b7872b3bc4e6
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: IT8603E Super I/O chip w/LPC interface
14 * IT8705F Super I/O chip w/LPC interface
15 * IT8712F Super I/O chip w/LPC interface
16 * IT8716F Super I/O chip w/LPC interface
17 * IT8718F Super I/O chip w/LPC interface
18 * IT8720F Super I/O chip w/LPC interface
19 * IT8721F Super I/O chip w/LPC interface
20 * IT8726F Super I/O chip w/LPC interface
21 * IT8728F Super I/O chip w/LPC interface
22 * IT8758E Super I/O chip w/LPC interface
23 * IT8771E Super I/O chip w/LPC interface
24 * IT8772E Super I/O chip w/LPC interface
25 * IT8782F Super I/O chip w/LPC interface
26 * IT8783E/F Super I/O chip w/LPC interface
27 * Sis950 A clone of the IT8705F
28 *
29 * Copyright (C) 2001 Chris Gauthron
30 * Copyright (C) 2005-2010 Jean Delvare <jdelvare@suse.de>
31 *
32 * This program is free software; you can redistribute it and/or modify
33 * it under the terms of the GNU General Public License as published by
34 * the Free Software Foundation; either version 2 of the License, or
35 * (at your option) any later version.
36 *
37 * This program is distributed in the hope that it will be useful,
38 * but WITHOUT ANY WARRANTY; without even the implied warranty of
39 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
40 * GNU General Public License for more details.
41 *
42 * You should have received a copy of the GNU General Public License
43 * along with this program; if not, write to the Free Software
44 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
45 */
46
47 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
48
49 #include <linux/module.h>
50 #include <linux/init.h>
51 #include <linux/slab.h>
52 #include <linux/jiffies.h>
53 #include <linux/platform_device.h>
54 #include <linux/hwmon.h>
55 #include <linux/hwmon-sysfs.h>
56 #include <linux/hwmon-vid.h>
57 #include <linux/err.h>
58 #include <linux/mutex.h>
59 #include <linux/sysfs.h>
60 #include <linux/string.h>
61 #include <linux/dmi.h>
62 #include <linux/acpi.h>
63 #include <linux/io.h>
64
65 #define DRVNAME "it87"
66
67 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8771,
68 it8772, it8782, it8783, it8603 };
69
70 static unsigned short force_id;
71 module_param(force_id, ushort, 0);
72 MODULE_PARM_DESC(force_id, "Override the detected device ID");
73
74 static struct platform_device *pdev;
75
76 #define REG 0x2e /* The register to read/write */
77 #define DEV 0x07 /* Register: Logical device select */
78 #define VAL 0x2f /* The value to read/write */
79 #define PME 0x04 /* The device with the fan registers in it */
80
81 /* The device with the IT8718F/IT8720F VID value in it */
82 #define GPIO 0x07
83
84 #define DEVID 0x20 /* Register: Device ID */
85 #define DEVREV 0x22 /* Register: Device Revision */
86
87 static inline int superio_inb(int reg)
88 {
89 outb(reg, REG);
90 return inb(VAL);
91 }
92
93 static inline void superio_outb(int reg, int val)
94 {
95 outb(reg, REG);
96 outb(val, VAL);
97 }
98
99 static int superio_inw(int reg)
100 {
101 int val;
102 outb(reg++, REG);
103 val = inb(VAL) << 8;
104 outb(reg, REG);
105 val |= inb(VAL);
106 return val;
107 }
108
109 static inline void superio_select(int ldn)
110 {
111 outb(DEV, REG);
112 outb(ldn, VAL);
113 }
114
115 static inline int superio_enter(void)
116 {
117 /*
118 * Try to reserve REG and REG + 1 for exclusive access.
119 */
120 if (!request_muxed_region(REG, 2, DRVNAME))
121 return -EBUSY;
122
123 outb(0x87, REG);
124 outb(0x01, REG);
125 outb(0x55, REG);
126 outb(0x55, REG);
127 return 0;
128 }
129
130 static inline void superio_exit(void)
131 {
132 outb(0x02, REG);
133 outb(0x02, VAL);
134 release_region(REG, 2);
135 }
136
137 /* Logical device 4 registers */
138 #define IT8712F_DEVID 0x8712
139 #define IT8705F_DEVID 0x8705
140 #define IT8716F_DEVID 0x8716
141 #define IT8718F_DEVID 0x8718
142 #define IT8720F_DEVID 0x8720
143 #define IT8721F_DEVID 0x8721
144 #define IT8726F_DEVID 0x8726
145 #define IT8728F_DEVID 0x8728
146 #define IT8771E_DEVID 0x8771
147 #define IT8772E_DEVID 0x8772
148 #define IT8782F_DEVID 0x8782
149 #define IT8783E_DEVID 0x8783
150 #define IT8306E_DEVID 0x8603
151 #define IT87_ACT_REG 0x30
152 #define IT87_BASE_REG 0x60
153
154 /* Logical device 7 registers (IT8712F and later) */
155 #define IT87_SIO_GPIO1_REG 0x25
156 #define IT87_SIO_GPIO3_REG 0x27
157 #define IT87_SIO_GPIO5_REG 0x29
158 #define IT87_SIO_PINX1_REG 0x2a /* Pin selection */
159 #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
160 #define IT87_SIO_SPI_REG 0xef /* SPI function pin select */
161 #define IT87_SIO_VID_REG 0xfc /* VID value */
162 #define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */
163
164 /* Update battery voltage after every reading if true */
165 static bool update_vbat;
166
167 /* Not all BIOSes properly configure the PWM registers */
168 static bool fix_pwm_polarity;
169
170 /* Many IT87 constants specified below */
171
172 /* Length of ISA address segment */
173 #define IT87_EXTENT 8
174
175 /* Length of ISA address segment for Environmental Controller */
176 #define IT87_EC_EXTENT 2
177
178 /* Offset of EC registers from ISA base address */
179 #define IT87_EC_OFFSET 5
180
181 /* Where are the ISA address/data registers relative to the EC base address */
182 #define IT87_ADDR_REG_OFFSET 0
183 #define IT87_DATA_REG_OFFSET 1
184
185 /*----- The IT87 registers -----*/
186
187 #define IT87_REG_CONFIG 0x00
188
189 #define IT87_REG_ALARM1 0x01
190 #define IT87_REG_ALARM2 0x02
191 #define IT87_REG_ALARM3 0x03
192
193 /*
194 * The IT8718F and IT8720F have the VID value in a different register, in
195 * Super-I/O configuration space.
196 */
197 #define IT87_REG_VID 0x0a
198 /*
199 * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
200 * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
201 * mode.
202 */
203 #define IT87_REG_FAN_DIV 0x0b
204 #define IT87_REG_FAN_16BIT 0x0c
205
206 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
207
208 static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
209 static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 };
210 static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
211 static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
212 static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 };
213
214 #define IT87_REG_FAN_MAIN_CTRL 0x13
215 #define IT87_REG_FAN_CTL 0x14
216 #define IT87_REG_PWM(nr) (0x15 + (nr))
217 #define IT87_REG_PWM_DUTY(nr) (0x63 + (nr) * 8)
218
219 #define IT87_REG_VIN(nr) (0x20 + (nr))
220 #define IT87_REG_TEMP(nr) (0x29 + (nr))
221
222 #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
223 #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
224 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
225 #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
226
227 #define IT87_REG_VIN_ENABLE 0x50
228 #define IT87_REG_TEMP_ENABLE 0x51
229 #define IT87_REG_TEMP_EXTRA 0x55
230 #define IT87_REG_BEEP_ENABLE 0x5c
231
232 #define IT87_REG_CHIPID 0x58
233
234 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
235 #define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i))
236
237 struct it87_devices {
238 const char *name;
239 u16 features;
240 u8 peci_mask;
241 u8 old_peci_mask;
242 };
243
244 #define FEAT_12MV_ADC (1 << 0)
245 #define FEAT_NEWER_AUTOPWM (1 << 1)
246 #define FEAT_OLD_AUTOPWM (1 << 2)
247 #define FEAT_16BIT_FANS (1 << 3)
248 #define FEAT_TEMP_OFFSET (1 << 4)
249 #define FEAT_TEMP_PECI (1 << 5)
250 #define FEAT_TEMP_OLD_PECI (1 << 6)
251
252 static const struct it87_devices it87_devices[] = {
253 [it87] = {
254 .name = "it87",
255 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */
256 },
257 [it8712] = {
258 .name = "it8712",
259 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */
260 },
261 [it8716] = {
262 .name = "it8716",
263 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
264 },
265 [it8718] = {
266 .name = "it8718",
267 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
268 | FEAT_TEMP_OLD_PECI,
269 .old_peci_mask = 0x4,
270 },
271 [it8720] = {
272 .name = "it8720",
273 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
274 | FEAT_TEMP_OLD_PECI,
275 .old_peci_mask = 0x4,
276 },
277 [it8721] = {
278 .name = "it8721",
279 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
280 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI,
281 .peci_mask = 0x05,
282 .old_peci_mask = 0x02, /* Actually reports PCH */
283 },
284 [it8728] = {
285 .name = "it8728",
286 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
287 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
288 .peci_mask = 0x07,
289 },
290 [it8771] = {
291 .name = "it8771",
292 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
293 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
294 /* PECI: guesswork */
295 /* 12mV ADC (OHM) */
296 /* 16 bit fans (OHM) */
297 .peci_mask = 0x07,
298 },
299 [it8772] = {
300 .name = "it8772",
301 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
302 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
303 /* PECI (coreboot) */
304 /* 12mV ADC (HWSensors4, OHM) */
305 /* 16 bit fans (HWSensors4, OHM) */
306 .peci_mask = 0x07,
307 },
308 [it8782] = {
309 .name = "it8782",
310 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
311 | FEAT_TEMP_OLD_PECI,
312 .old_peci_mask = 0x4,
313 },
314 [it8783] = {
315 .name = "it8783",
316 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
317 | FEAT_TEMP_OLD_PECI,
318 .old_peci_mask = 0x4,
319 },
320 [it8603] = {
321 .name = "it8603",
322 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
323 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
324 .peci_mask = 0x07,
325 },
326 };
327
328 #define has_16bit_fans(data) ((data)->features & FEAT_16BIT_FANS)
329 #define has_12mv_adc(data) ((data)->features & FEAT_12MV_ADC)
330 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
331 #define has_old_autopwm(data) ((data)->features & FEAT_OLD_AUTOPWM)
332 #define has_temp_offset(data) ((data)->features & FEAT_TEMP_OFFSET)
333 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
334 ((data)->peci_mask & (1 << nr)))
335 #define has_temp_old_peci(data, nr) \
336 (((data)->features & FEAT_TEMP_OLD_PECI) && \
337 ((data)->old_peci_mask & (1 << nr)))
338
339 struct it87_sio_data {
340 enum chips type;
341 /* Values read from Super-I/O config space */
342 u8 revision;
343 u8 vid_value;
344 u8 beep_pin;
345 u8 internal; /* Internal sensors can be labeled */
346 /* Features skipped based on config or DMI */
347 u16 skip_in;
348 u8 skip_vid;
349 u8 skip_fan;
350 u8 skip_pwm;
351 u8 skip_temp;
352 };
353
354 /*
355 * For each registered chip, we need to keep some data in memory.
356 * The structure is dynamically allocated.
357 */
358 struct it87_data {
359 struct device *hwmon_dev;
360 enum chips type;
361 u16 features;
362 u8 peci_mask;
363 u8 old_peci_mask;
364
365 unsigned short addr;
366 const char *name;
367 struct mutex update_lock;
368 char valid; /* !=0 if following fields are valid */
369 unsigned long last_updated; /* In jiffies */
370
371 u16 in_scaled; /* Internal voltage sensors are scaled */
372 u8 in[10][3]; /* [nr][0]=in, [1]=min, [2]=max */
373 u8 has_fan; /* Bitfield, fans enabled */
374 u16 fan[5][2]; /* Register values, [nr][0]=fan, [1]=min */
375 u8 has_temp; /* Bitfield, temp sensors enabled */
376 s8 temp[3][4]; /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
377 u8 sensor; /* Register value (IT87_REG_TEMP_ENABLE) */
378 u8 extra; /* Register value (IT87_REG_TEMP_EXTRA) */
379 u8 fan_div[3]; /* Register encoding, shifted right */
380 u8 vid; /* Register encoding, combined */
381 u8 vrm;
382 u32 alarms; /* Register encoding, combined */
383 u8 beeps; /* Register encoding */
384 u8 fan_main_ctrl; /* Register value */
385 u8 fan_ctl; /* Register value */
386
387 /*
388 * The following 3 arrays correspond to the same registers up to
389 * the IT8720F. The meaning of bits 6-0 depends on the value of bit
390 * 7, and we want to preserve settings on mode changes, so we have
391 * to track all values separately.
392 * Starting with the IT8721F, the manual PWM duty cycles are stored
393 * in separate registers (8-bit values), so the separate tracking
394 * is no longer needed, but it is still done to keep the driver
395 * simple.
396 */
397 u8 pwm_ctrl[3]; /* Register value */
398 u8 pwm_duty[3]; /* Manual PWM value set by user */
399 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */
400
401 /* Automatic fan speed control registers */
402 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */
403 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */
404 };
405
406 static int adc_lsb(const struct it87_data *data, int nr)
407 {
408 int lsb = has_12mv_adc(data) ? 12 : 16;
409 if (data->in_scaled & (1 << nr))
410 lsb <<= 1;
411 return lsb;
412 }
413
414 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
415 {
416 val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
417 return clamp_val(val, 0, 255);
418 }
419
420 static int in_from_reg(const struct it87_data *data, int nr, int val)
421 {
422 return val * adc_lsb(data, nr);
423 }
424
425 static inline u8 FAN_TO_REG(long rpm, int div)
426 {
427 if (rpm == 0)
428 return 255;
429 rpm = clamp_val(rpm, 1, 1000000);
430 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
431 }
432
433 static inline u16 FAN16_TO_REG(long rpm)
434 {
435 if (rpm == 0)
436 return 0xffff;
437 return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
438 }
439
440 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
441 1350000 / ((val) * (div)))
442 /* The divider is fixed to 2 in 16-bit mode */
443 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
444 1350000 / ((val) * 2))
445
446 #define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \
447 ((val) + 500) / 1000), -128, 127))
448 #define TEMP_FROM_REG(val) ((val) * 1000)
449
450 static u8 pwm_to_reg(const struct it87_data *data, long val)
451 {
452 if (has_newer_autopwm(data))
453 return val;
454 else
455 return val >> 1;
456 }
457
458 static int pwm_from_reg(const struct it87_data *data, u8 reg)
459 {
460 if (has_newer_autopwm(data))
461 return reg;
462 else
463 return (reg & 0x7f) << 1;
464 }
465
466
467 static int DIV_TO_REG(int val)
468 {
469 int answer = 0;
470 while (answer < 7 && (val >>= 1))
471 answer++;
472 return answer;
473 }
474 #define DIV_FROM_REG(val) (1 << (val))
475
476 static const unsigned int pwm_freq[8] = {
477 48000000 / 128,
478 24000000 / 128,
479 12000000 / 128,
480 8000000 / 128,
481 6000000 / 128,
482 3000000 / 128,
483 1500000 / 128,
484 750000 / 128,
485 };
486
487 static int it87_probe(struct platform_device *pdev);
488 static int it87_remove(struct platform_device *pdev);
489
490 static int it87_read_value(struct it87_data *data, u8 reg);
491 static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
492 static struct it87_data *it87_update_device(struct device *dev);
493 static int it87_check_pwm(struct device *dev);
494 static void it87_init_device(struct platform_device *pdev);
495
496
497 static struct platform_driver it87_driver = {
498 .driver = {
499 .owner = THIS_MODULE,
500 .name = DRVNAME,
501 },
502 .probe = it87_probe,
503 .remove = it87_remove,
504 };
505
506 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
507 char *buf)
508 {
509 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
510 int nr = sattr->nr;
511 int index = sattr->index;
512
513 struct it87_data *data = it87_update_device(dev);
514 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
515 }
516
517 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
518 const char *buf, size_t count)
519 {
520 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
521 int nr = sattr->nr;
522 int index = sattr->index;
523
524 struct it87_data *data = dev_get_drvdata(dev);
525 unsigned long val;
526
527 if (kstrtoul(buf, 10, &val) < 0)
528 return -EINVAL;
529
530 mutex_lock(&data->update_lock);
531 data->in[nr][index] = in_to_reg(data, nr, val);
532 it87_write_value(data,
533 index == 1 ? IT87_REG_VIN_MIN(nr)
534 : IT87_REG_VIN_MAX(nr),
535 data->in[nr][index]);
536 mutex_unlock(&data->update_lock);
537 return count;
538 }
539
540 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
541 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
542 0, 1);
543 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
544 0, 2);
545
546 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
547 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
548 1, 1);
549 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
550 1, 2);
551
552 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
553 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
554 2, 1);
555 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
556 2, 2);
557
558 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
559 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
560 3, 1);
561 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
562 3, 2);
563
564 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
565 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
566 4, 1);
567 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
568 4, 2);
569
570 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
571 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
572 5, 1);
573 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
574 5, 2);
575
576 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
577 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
578 6, 1);
579 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
580 6, 2);
581
582 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
583 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
584 7, 1);
585 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
586 7, 2);
587
588 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
589 static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 9, 0);
590
591 /* 3 temperatures */
592 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
593 char *buf)
594 {
595 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
596 int nr = sattr->nr;
597 int index = sattr->index;
598 struct it87_data *data = it87_update_device(dev);
599
600 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
601 }
602
603 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
604 const char *buf, size_t count)
605 {
606 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
607 int nr = sattr->nr;
608 int index = sattr->index;
609 struct it87_data *data = dev_get_drvdata(dev);
610 long val;
611 u8 reg, regval;
612
613 if (kstrtol(buf, 10, &val) < 0)
614 return -EINVAL;
615
616 mutex_lock(&data->update_lock);
617
618 switch (index) {
619 default:
620 case 1:
621 reg = IT87_REG_TEMP_LOW(nr);
622 break;
623 case 2:
624 reg = IT87_REG_TEMP_HIGH(nr);
625 break;
626 case 3:
627 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
628 if (!(regval & 0x80)) {
629 regval |= 0x80;
630 it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
631 }
632 data->valid = 0;
633 reg = IT87_REG_TEMP_OFFSET[nr];
634 break;
635 }
636
637 data->temp[nr][index] = TEMP_TO_REG(val);
638 it87_write_value(data, reg, data->temp[nr][index]);
639 mutex_unlock(&data->update_lock);
640 return count;
641 }
642
643 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
644 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
645 0, 1);
646 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
647 0, 2);
648 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
649 set_temp, 0, 3);
650 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
651 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
652 1, 1);
653 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
654 1, 2);
655 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
656 set_temp, 1, 3);
657 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
658 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
659 2, 1);
660 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
661 2, 2);
662 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
663 set_temp, 2, 3);
664
665 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
666 char *buf)
667 {
668 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
669 int nr = sensor_attr->index;
670 struct it87_data *data = it87_update_device(dev);
671 u8 reg = data->sensor; /* In case value is updated while used */
672 u8 extra = data->extra;
673
674 if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1))
675 || (has_temp_old_peci(data, nr) && (extra & 0x80)))
676 return sprintf(buf, "6\n"); /* Intel PECI */
677 if (reg & (1 << nr))
678 return sprintf(buf, "3\n"); /* thermal diode */
679 if (reg & (8 << nr))
680 return sprintf(buf, "4\n"); /* thermistor */
681 return sprintf(buf, "0\n"); /* disabled */
682 }
683
684 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
685 const char *buf, size_t count)
686 {
687 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
688 int nr = sensor_attr->index;
689
690 struct it87_data *data = dev_get_drvdata(dev);
691 long val;
692 u8 reg, extra;
693
694 if (kstrtol(buf, 10, &val) < 0)
695 return -EINVAL;
696
697 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
698 reg &= ~(1 << nr);
699 reg &= ~(8 << nr);
700 if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
701 reg &= 0x3f;
702 extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
703 if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
704 extra &= 0x7f;
705 if (val == 2) { /* backwards compatibility */
706 dev_warn(dev,
707 "Sensor type 2 is deprecated, please use 4 instead\n");
708 val = 4;
709 }
710 /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
711 if (val == 3)
712 reg |= 1 << nr;
713 else if (val == 4)
714 reg |= 8 << nr;
715 else if (has_temp_peci(data, nr) && val == 6)
716 reg |= (nr + 1) << 6;
717 else if (has_temp_old_peci(data, nr) && val == 6)
718 extra |= 0x80;
719 else if (val != 0)
720 return -EINVAL;
721
722 mutex_lock(&data->update_lock);
723 data->sensor = reg;
724 data->extra = extra;
725 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
726 if (has_temp_old_peci(data, nr))
727 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
728 data->valid = 0; /* Force cache refresh */
729 mutex_unlock(&data->update_lock);
730 return count;
731 }
732
733 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
734 set_temp_type, 0);
735 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
736 set_temp_type, 1);
737 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
738 set_temp_type, 2);
739
740 /* 3 Fans */
741
742 static int pwm_mode(const struct it87_data *data, int nr)
743 {
744 int ctrl = data->fan_main_ctrl & (1 << nr);
745
746 if (ctrl == 0 && data->type != it8603) /* Full speed */
747 return 0;
748 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
749 return 2;
750 else /* Manual mode */
751 return 1;
752 }
753
754 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
755 char *buf)
756 {
757 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
758 int nr = sattr->nr;
759 int index = sattr->index;
760 int speed;
761 struct it87_data *data = it87_update_device(dev);
762
763 speed = has_16bit_fans(data) ?
764 FAN16_FROM_REG(data->fan[nr][index]) :
765 FAN_FROM_REG(data->fan[nr][index],
766 DIV_FROM_REG(data->fan_div[nr]));
767 return sprintf(buf, "%d\n", speed);
768 }
769
770 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
771 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", DIV_FROM_REG(data->fan_div[nr]));
778 }
779 static ssize_t show_pwm_enable(struct device *dev,
780 struct device_attribute *attr, 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", pwm_mode(data, nr));
787 }
788 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
789 char *buf)
790 {
791 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
792 int nr = sensor_attr->index;
793
794 struct it87_data *data = it87_update_device(dev);
795 return sprintf(buf, "%d\n",
796 pwm_from_reg(data, data->pwm_duty[nr]));
797 }
798 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
799 char *buf)
800 {
801 struct it87_data *data = it87_update_device(dev);
802 int index = (data->fan_ctl >> 4) & 0x07;
803
804 return sprintf(buf, "%u\n", pwm_freq[index]);
805 }
806
807 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
808 const char *buf, size_t count)
809 {
810 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
811 int nr = sattr->nr;
812 int index = sattr->index;
813
814 struct it87_data *data = dev_get_drvdata(dev);
815 long val;
816 u8 reg;
817
818 if (kstrtol(buf, 10, &val) < 0)
819 return -EINVAL;
820
821 mutex_lock(&data->update_lock);
822
823 if (has_16bit_fans(data)) {
824 data->fan[nr][index] = FAN16_TO_REG(val);
825 it87_write_value(data, IT87_REG_FAN_MIN[nr],
826 data->fan[nr][index] & 0xff);
827 it87_write_value(data, IT87_REG_FANX_MIN[nr],
828 data->fan[nr][index] >> 8);
829 } else {
830 reg = it87_read_value(data, IT87_REG_FAN_DIV);
831 switch (nr) {
832 case 0:
833 data->fan_div[nr] = reg & 0x07;
834 break;
835 case 1:
836 data->fan_div[nr] = (reg >> 3) & 0x07;
837 break;
838 case 2:
839 data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
840 break;
841 }
842 data->fan[nr][index] =
843 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
844 it87_write_value(data, IT87_REG_FAN_MIN[nr],
845 data->fan[nr][index]);
846 }
847
848 mutex_unlock(&data->update_lock);
849 return count;
850 }
851
852 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
853 const char *buf, size_t count)
854 {
855 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
856 int nr = sensor_attr->index;
857
858 struct it87_data *data = dev_get_drvdata(dev);
859 unsigned long val;
860 int min;
861 u8 old;
862
863 if (kstrtoul(buf, 10, &val) < 0)
864 return -EINVAL;
865
866 mutex_lock(&data->update_lock);
867 old = it87_read_value(data, IT87_REG_FAN_DIV);
868
869 /* Save fan min limit */
870 min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
871
872 switch (nr) {
873 case 0:
874 case 1:
875 data->fan_div[nr] = DIV_TO_REG(val);
876 break;
877 case 2:
878 if (val < 8)
879 data->fan_div[nr] = 1;
880 else
881 data->fan_div[nr] = 3;
882 }
883 val = old & 0x80;
884 val |= (data->fan_div[0] & 0x07);
885 val |= (data->fan_div[1] & 0x07) << 3;
886 if (data->fan_div[2] == 3)
887 val |= 0x1 << 6;
888 it87_write_value(data, IT87_REG_FAN_DIV, val);
889
890 /* Restore fan min limit */
891 data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
892 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
893
894 mutex_unlock(&data->update_lock);
895 return count;
896 }
897
898 /* Returns 0 if OK, -EINVAL otherwise */
899 static int check_trip_points(struct device *dev, int nr)
900 {
901 const struct it87_data *data = dev_get_drvdata(dev);
902 int i, err = 0;
903
904 if (has_old_autopwm(data)) {
905 for (i = 0; i < 3; i++) {
906 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
907 err = -EINVAL;
908 }
909 for (i = 0; i < 2; i++) {
910 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
911 err = -EINVAL;
912 }
913 }
914
915 if (err) {
916 dev_err(dev,
917 "Inconsistent trip points, not switching to automatic mode\n");
918 dev_err(dev, "Adjust the trip points and try again\n");
919 }
920 return err;
921 }
922
923 static ssize_t set_pwm_enable(struct device *dev,
924 struct device_attribute *attr, const char *buf, size_t count)
925 {
926 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
927 int nr = sensor_attr->index;
928
929 struct it87_data *data = dev_get_drvdata(dev);
930 long val;
931
932 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
933 return -EINVAL;
934
935 /* Check trip points before switching to automatic mode */
936 if (val == 2) {
937 if (check_trip_points(dev, nr) < 0)
938 return -EINVAL;
939 }
940
941 /* IT8603E does not have on/off mode */
942 if (val == 0 && data->type == it8603)
943 return -EINVAL;
944
945 mutex_lock(&data->update_lock);
946
947 if (val == 0) {
948 int tmp;
949 /* make sure the fan is on when in on/off mode */
950 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
951 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
952 /* set on/off mode */
953 data->fan_main_ctrl &= ~(1 << nr);
954 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
955 data->fan_main_ctrl);
956 } else {
957 if (val == 1) /* Manual mode */
958 data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
959 data->pwm_temp_map[nr] :
960 data->pwm_duty[nr];
961 else /* Automatic mode */
962 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
963 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
964
965 if (data->type != it8603) {
966 /* set SmartGuardian mode */
967 data->fan_main_ctrl |= (1 << nr);
968 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
969 data->fan_main_ctrl);
970 }
971 }
972
973 mutex_unlock(&data->update_lock);
974 return count;
975 }
976 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
977 const char *buf, size_t count)
978 {
979 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
980 int nr = sensor_attr->index;
981
982 struct it87_data *data = dev_get_drvdata(dev);
983 long val;
984
985 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
986 return -EINVAL;
987
988 mutex_lock(&data->update_lock);
989 if (has_newer_autopwm(data)) {
990 /*
991 * If we are in automatic mode, the PWM duty cycle register
992 * is read-only so we can't write the value.
993 */
994 if (data->pwm_ctrl[nr] & 0x80) {
995 mutex_unlock(&data->update_lock);
996 return -EBUSY;
997 }
998 data->pwm_duty[nr] = pwm_to_reg(data, val);
999 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
1000 data->pwm_duty[nr]);
1001 } else {
1002 data->pwm_duty[nr] = pwm_to_reg(data, val);
1003 /*
1004 * If we are in manual mode, write the duty cycle immediately;
1005 * otherwise, just store it for later use.
1006 */
1007 if (!(data->pwm_ctrl[nr] & 0x80)) {
1008 data->pwm_ctrl[nr] = data->pwm_duty[nr];
1009 it87_write_value(data, IT87_REG_PWM(nr),
1010 data->pwm_ctrl[nr]);
1011 }
1012 }
1013 mutex_unlock(&data->update_lock);
1014 return count;
1015 }
1016 static ssize_t set_pwm_freq(struct device *dev,
1017 struct device_attribute *attr, const char *buf, size_t count)
1018 {
1019 struct it87_data *data = dev_get_drvdata(dev);
1020 unsigned long val;
1021 int i;
1022
1023 if (kstrtoul(buf, 10, &val) < 0)
1024 return -EINVAL;
1025
1026 /* Search for the nearest available frequency */
1027 for (i = 0; i < 7; i++) {
1028 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
1029 break;
1030 }
1031
1032 mutex_lock(&data->update_lock);
1033 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
1034 data->fan_ctl |= i << 4;
1035 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
1036 mutex_unlock(&data->update_lock);
1037
1038 return count;
1039 }
1040 static ssize_t show_pwm_temp_map(struct device *dev,
1041 struct device_attribute *attr, char *buf)
1042 {
1043 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1044 int nr = sensor_attr->index;
1045
1046 struct it87_data *data = it87_update_device(dev);
1047 int map;
1048
1049 if (data->pwm_temp_map[nr] < 3)
1050 map = 1 << data->pwm_temp_map[nr];
1051 else
1052 map = 0; /* Should never happen */
1053 return sprintf(buf, "%d\n", map);
1054 }
1055 static ssize_t set_pwm_temp_map(struct device *dev,
1056 struct device_attribute *attr, const char *buf, size_t count)
1057 {
1058 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1059 int nr = sensor_attr->index;
1060
1061 struct it87_data *data = dev_get_drvdata(dev);
1062 long val;
1063 u8 reg;
1064
1065 /*
1066 * This check can go away if we ever support automatic fan speed
1067 * control on newer chips.
1068 */
1069 if (!has_old_autopwm(data)) {
1070 dev_notice(dev, "Mapping change disabled for safety reasons\n");
1071 return -EINVAL;
1072 }
1073
1074 if (kstrtol(buf, 10, &val) < 0)
1075 return -EINVAL;
1076
1077 switch (val) {
1078 case (1 << 0):
1079 reg = 0x00;
1080 break;
1081 case (1 << 1):
1082 reg = 0x01;
1083 break;
1084 case (1 << 2):
1085 reg = 0x02;
1086 break;
1087 default:
1088 return -EINVAL;
1089 }
1090
1091 mutex_lock(&data->update_lock);
1092 data->pwm_temp_map[nr] = reg;
1093 /*
1094 * If we are in automatic mode, write the temp mapping immediately;
1095 * otherwise, just store it for later use.
1096 */
1097 if (data->pwm_ctrl[nr] & 0x80) {
1098 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1099 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1100 }
1101 mutex_unlock(&data->update_lock);
1102 return count;
1103 }
1104
1105 static ssize_t show_auto_pwm(struct device *dev,
1106 struct device_attribute *attr, char *buf)
1107 {
1108 struct it87_data *data = it87_update_device(dev);
1109 struct sensor_device_attribute_2 *sensor_attr =
1110 to_sensor_dev_attr_2(attr);
1111 int nr = sensor_attr->nr;
1112 int point = sensor_attr->index;
1113
1114 return sprintf(buf, "%d\n",
1115 pwm_from_reg(data, data->auto_pwm[nr][point]));
1116 }
1117
1118 static ssize_t set_auto_pwm(struct device *dev,
1119 struct device_attribute *attr, const char *buf, size_t count)
1120 {
1121 struct it87_data *data = dev_get_drvdata(dev);
1122 struct sensor_device_attribute_2 *sensor_attr =
1123 to_sensor_dev_attr_2(attr);
1124 int nr = sensor_attr->nr;
1125 int point = sensor_attr->index;
1126 long val;
1127
1128 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1129 return -EINVAL;
1130
1131 mutex_lock(&data->update_lock);
1132 data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1133 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1134 data->auto_pwm[nr][point]);
1135 mutex_unlock(&data->update_lock);
1136 return count;
1137 }
1138
1139 static ssize_t show_auto_temp(struct device *dev,
1140 struct device_attribute *attr, char *buf)
1141 {
1142 struct it87_data *data = it87_update_device(dev);
1143 struct sensor_device_attribute_2 *sensor_attr =
1144 to_sensor_dev_attr_2(attr);
1145 int nr = sensor_attr->nr;
1146 int point = sensor_attr->index;
1147
1148 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1149 }
1150
1151 static ssize_t set_auto_temp(struct device *dev,
1152 struct device_attribute *attr, const char *buf, size_t count)
1153 {
1154 struct it87_data *data = dev_get_drvdata(dev);
1155 struct sensor_device_attribute_2 *sensor_attr =
1156 to_sensor_dev_attr_2(attr);
1157 int nr = sensor_attr->nr;
1158 int point = sensor_attr->index;
1159 long val;
1160
1161 if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1162 return -EINVAL;
1163
1164 mutex_lock(&data->update_lock);
1165 data->auto_temp[nr][point] = TEMP_TO_REG(val);
1166 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1167 data->auto_temp[nr][point]);
1168 mutex_unlock(&data->update_lock);
1169 return count;
1170 }
1171
1172 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1173 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1174 0, 1);
1175 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1176 set_fan_div, 0);
1177
1178 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1179 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1180 1, 1);
1181 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1182 set_fan_div, 1);
1183
1184 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1185 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1186 2, 1);
1187 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1188 set_fan_div, 2);
1189
1190 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1191 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1192 3, 1);
1193
1194 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1195 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1196 4, 1);
1197
1198 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1199 show_pwm_enable, set_pwm_enable, 0);
1200 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1201 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
1202 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1203 show_pwm_temp_map, set_pwm_temp_map, 0);
1204 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1205 show_auto_pwm, set_auto_pwm, 0, 0);
1206 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1207 show_auto_pwm, set_auto_pwm, 0, 1);
1208 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1209 show_auto_pwm, set_auto_pwm, 0, 2);
1210 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1211 show_auto_pwm, NULL, 0, 3);
1212 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1213 show_auto_temp, set_auto_temp, 0, 1);
1214 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1215 show_auto_temp, set_auto_temp, 0, 0);
1216 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1217 show_auto_temp, set_auto_temp, 0, 2);
1218 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1219 show_auto_temp, set_auto_temp, 0, 3);
1220 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1221 show_auto_temp, set_auto_temp, 0, 4);
1222
1223 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1224 show_pwm_enable, set_pwm_enable, 1);
1225 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1226 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL);
1227 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1228 show_pwm_temp_map, set_pwm_temp_map, 1);
1229 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1230 show_auto_pwm, set_auto_pwm, 1, 0);
1231 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1232 show_auto_pwm, set_auto_pwm, 1, 1);
1233 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1234 show_auto_pwm, set_auto_pwm, 1, 2);
1235 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1236 show_auto_pwm, NULL, 1, 3);
1237 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1238 show_auto_temp, set_auto_temp, 1, 1);
1239 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1240 show_auto_temp, set_auto_temp, 1, 0);
1241 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1242 show_auto_temp, set_auto_temp, 1, 2);
1243 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1244 show_auto_temp, set_auto_temp, 1, 3);
1245 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1246 show_auto_temp, set_auto_temp, 1, 4);
1247
1248 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1249 show_pwm_enable, set_pwm_enable, 2);
1250 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1251 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL);
1252 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1253 show_pwm_temp_map, set_pwm_temp_map, 2);
1254 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1255 show_auto_pwm, set_auto_pwm, 2, 0);
1256 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1257 show_auto_pwm, set_auto_pwm, 2, 1);
1258 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1259 show_auto_pwm, set_auto_pwm, 2, 2);
1260 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1261 show_auto_pwm, NULL, 2, 3);
1262 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1263 show_auto_temp, set_auto_temp, 2, 1);
1264 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1265 show_auto_temp, set_auto_temp, 2, 0);
1266 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1267 show_auto_temp, set_auto_temp, 2, 2);
1268 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1269 show_auto_temp, set_auto_temp, 2, 3);
1270 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1271 show_auto_temp, set_auto_temp, 2, 4);
1272
1273 /* Alarms */
1274 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1275 char *buf)
1276 {
1277 struct it87_data *data = it87_update_device(dev);
1278 return sprintf(buf, "%u\n", data->alarms);
1279 }
1280 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1281
1282 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1283 char *buf)
1284 {
1285 int bitnr = to_sensor_dev_attr(attr)->index;
1286 struct it87_data *data = it87_update_device(dev);
1287 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1288 }
1289
1290 static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1291 *attr, const char *buf, size_t count)
1292 {
1293 struct it87_data *data = dev_get_drvdata(dev);
1294 long val;
1295 int config;
1296
1297 if (kstrtol(buf, 10, &val) < 0 || val != 0)
1298 return -EINVAL;
1299
1300 mutex_lock(&data->update_lock);
1301 config = it87_read_value(data, IT87_REG_CONFIG);
1302 if (config < 0) {
1303 count = config;
1304 } else {
1305 config |= 1 << 5;
1306 it87_write_value(data, IT87_REG_CONFIG, config);
1307 /* Invalidate cache to force re-read */
1308 data->valid = 0;
1309 }
1310 mutex_unlock(&data->update_lock);
1311
1312 return count;
1313 }
1314
1315 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1316 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1317 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1318 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1319 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1320 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1321 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1322 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1323 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1324 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1325 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1326 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1327 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1328 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1329 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1330 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1331 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1332 show_alarm, clear_intrusion, 4);
1333
1334 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1335 char *buf)
1336 {
1337 int bitnr = to_sensor_dev_attr(attr)->index;
1338 struct it87_data *data = it87_update_device(dev);
1339 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1340 }
1341 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1342 const char *buf, size_t count)
1343 {
1344 int bitnr = to_sensor_dev_attr(attr)->index;
1345 struct it87_data *data = dev_get_drvdata(dev);
1346 long val;
1347
1348 if (kstrtol(buf, 10, &val) < 0
1349 || (val != 0 && val != 1))
1350 return -EINVAL;
1351
1352 mutex_lock(&data->update_lock);
1353 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1354 if (val)
1355 data->beeps |= (1 << bitnr);
1356 else
1357 data->beeps &= ~(1 << bitnr);
1358 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1359 mutex_unlock(&data->update_lock);
1360 return count;
1361 }
1362
1363 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1364 show_beep, set_beep, 1);
1365 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1366 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1367 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1368 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1369 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1370 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1371 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1372 /* fanX_beep writability is set later */
1373 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1374 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1375 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1376 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1377 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1378 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1379 show_beep, set_beep, 2);
1380 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1381 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1382
1383 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1384 char *buf)
1385 {
1386 struct it87_data *data = dev_get_drvdata(dev);
1387 return sprintf(buf, "%u\n", data->vrm);
1388 }
1389 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1390 const char *buf, size_t count)
1391 {
1392 struct it87_data *data = dev_get_drvdata(dev);
1393 unsigned long val;
1394
1395 if (kstrtoul(buf, 10, &val) < 0)
1396 return -EINVAL;
1397
1398 data->vrm = val;
1399
1400 return count;
1401 }
1402 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1403
1404 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1405 char *buf)
1406 {
1407 struct it87_data *data = it87_update_device(dev);
1408 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1409 }
1410 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1411
1412 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1413 char *buf)
1414 {
1415 static const char * const labels[] = {
1416 "+5V",
1417 "5VSB",
1418 "Vbat",
1419 };
1420 static const char * const labels_it8721[] = {
1421 "+3.3V",
1422 "3VSB",
1423 "Vbat",
1424 };
1425 struct it87_data *data = dev_get_drvdata(dev);
1426 int nr = to_sensor_dev_attr(attr)->index;
1427
1428 return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1429 : labels[nr]);
1430 }
1431 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1432 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1433 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1434 /* special AVCC3 IT8306E in9 */
1435 static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 0);
1436
1437 static ssize_t show_name(struct device *dev, struct device_attribute
1438 *devattr, char *buf)
1439 {
1440 struct it87_data *data = dev_get_drvdata(dev);
1441 return sprintf(buf, "%s\n", data->name);
1442 }
1443 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1444
1445 static struct attribute *it87_attributes_in[10][5] = {
1446 {
1447 &sensor_dev_attr_in0_input.dev_attr.attr,
1448 &sensor_dev_attr_in0_min.dev_attr.attr,
1449 &sensor_dev_attr_in0_max.dev_attr.attr,
1450 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1451 NULL
1452 }, {
1453 &sensor_dev_attr_in1_input.dev_attr.attr,
1454 &sensor_dev_attr_in1_min.dev_attr.attr,
1455 &sensor_dev_attr_in1_max.dev_attr.attr,
1456 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1457 NULL
1458 }, {
1459 &sensor_dev_attr_in2_input.dev_attr.attr,
1460 &sensor_dev_attr_in2_min.dev_attr.attr,
1461 &sensor_dev_attr_in2_max.dev_attr.attr,
1462 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1463 NULL
1464 }, {
1465 &sensor_dev_attr_in3_input.dev_attr.attr,
1466 &sensor_dev_attr_in3_min.dev_attr.attr,
1467 &sensor_dev_attr_in3_max.dev_attr.attr,
1468 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1469 NULL
1470 }, {
1471 &sensor_dev_attr_in4_input.dev_attr.attr,
1472 &sensor_dev_attr_in4_min.dev_attr.attr,
1473 &sensor_dev_attr_in4_max.dev_attr.attr,
1474 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1475 NULL
1476 }, {
1477 &sensor_dev_attr_in5_input.dev_attr.attr,
1478 &sensor_dev_attr_in5_min.dev_attr.attr,
1479 &sensor_dev_attr_in5_max.dev_attr.attr,
1480 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1481 NULL
1482 }, {
1483 &sensor_dev_attr_in6_input.dev_attr.attr,
1484 &sensor_dev_attr_in6_min.dev_attr.attr,
1485 &sensor_dev_attr_in6_max.dev_attr.attr,
1486 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1487 NULL
1488 }, {
1489 &sensor_dev_attr_in7_input.dev_attr.attr,
1490 &sensor_dev_attr_in7_min.dev_attr.attr,
1491 &sensor_dev_attr_in7_max.dev_attr.attr,
1492 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1493 NULL
1494 }, {
1495 &sensor_dev_attr_in8_input.dev_attr.attr,
1496 NULL
1497 }, {
1498 &sensor_dev_attr_in9_input.dev_attr.attr,
1499 NULL
1500 } };
1501
1502 static const struct attribute_group it87_group_in[10] = {
1503 { .attrs = it87_attributes_in[0] },
1504 { .attrs = it87_attributes_in[1] },
1505 { .attrs = it87_attributes_in[2] },
1506 { .attrs = it87_attributes_in[3] },
1507 { .attrs = it87_attributes_in[4] },
1508 { .attrs = it87_attributes_in[5] },
1509 { .attrs = it87_attributes_in[6] },
1510 { .attrs = it87_attributes_in[7] },
1511 { .attrs = it87_attributes_in[8] },
1512 { .attrs = it87_attributes_in[9] },
1513 };
1514
1515 static struct attribute *it87_attributes_temp[3][6] = {
1516 {
1517 &sensor_dev_attr_temp1_input.dev_attr.attr,
1518 &sensor_dev_attr_temp1_max.dev_attr.attr,
1519 &sensor_dev_attr_temp1_min.dev_attr.attr,
1520 &sensor_dev_attr_temp1_type.dev_attr.attr,
1521 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1522 NULL
1523 } , {
1524 &sensor_dev_attr_temp2_input.dev_attr.attr,
1525 &sensor_dev_attr_temp2_max.dev_attr.attr,
1526 &sensor_dev_attr_temp2_min.dev_attr.attr,
1527 &sensor_dev_attr_temp2_type.dev_attr.attr,
1528 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1529 NULL
1530 } , {
1531 &sensor_dev_attr_temp3_input.dev_attr.attr,
1532 &sensor_dev_attr_temp3_max.dev_attr.attr,
1533 &sensor_dev_attr_temp3_min.dev_attr.attr,
1534 &sensor_dev_attr_temp3_type.dev_attr.attr,
1535 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1536 NULL
1537 } };
1538
1539 static const struct attribute_group it87_group_temp[3] = {
1540 { .attrs = it87_attributes_temp[0] },
1541 { .attrs = it87_attributes_temp[1] },
1542 { .attrs = it87_attributes_temp[2] },
1543 };
1544
1545 static struct attribute *it87_attributes_temp_offset[] = {
1546 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1547 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1548 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1549 };
1550
1551 static struct attribute *it87_attributes[] = {
1552 &dev_attr_alarms.attr,
1553 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1554 &dev_attr_name.attr,
1555 NULL
1556 };
1557
1558 static const struct attribute_group it87_group = {
1559 .attrs = it87_attributes,
1560 };
1561
1562 static struct attribute *it87_attributes_in_beep[] = {
1563 &sensor_dev_attr_in0_beep.dev_attr.attr,
1564 &sensor_dev_attr_in1_beep.dev_attr.attr,
1565 &sensor_dev_attr_in2_beep.dev_attr.attr,
1566 &sensor_dev_attr_in3_beep.dev_attr.attr,
1567 &sensor_dev_attr_in4_beep.dev_attr.attr,
1568 &sensor_dev_attr_in5_beep.dev_attr.attr,
1569 &sensor_dev_attr_in6_beep.dev_attr.attr,
1570 &sensor_dev_attr_in7_beep.dev_attr.attr,
1571 NULL,
1572 NULL,
1573 };
1574
1575 static struct attribute *it87_attributes_temp_beep[] = {
1576 &sensor_dev_attr_temp1_beep.dev_attr.attr,
1577 &sensor_dev_attr_temp2_beep.dev_attr.attr,
1578 &sensor_dev_attr_temp3_beep.dev_attr.attr,
1579 };
1580
1581 static struct attribute *it87_attributes_fan[5][3+1] = { {
1582 &sensor_dev_attr_fan1_input.dev_attr.attr,
1583 &sensor_dev_attr_fan1_min.dev_attr.attr,
1584 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1585 NULL
1586 }, {
1587 &sensor_dev_attr_fan2_input.dev_attr.attr,
1588 &sensor_dev_attr_fan2_min.dev_attr.attr,
1589 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1590 NULL
1591 }, {
1592 &sensor_dev_attr_fan3_input.dev_attr.attr,
1593 &sensor_dev_attr_fan3_min.dev_attr.attr,
1594 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1595 NULL
1596 }, {
1597 &sensor_dev_attr_fan4_input.dev_attr.attr,
1598 &sensor_dev_attr_fan4_min.dev_attr.attr,
1599 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1600 NULL
1601 }, {
1602 &sensor_dev_attr_fan5_input.dev_attr.attr,
1603 &sensor_dev_attr_fan5_min.dev_attr.attr,
1604 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1605 NULL
1606 } };
1607
1608 static const struct attribute_group it87_group_fan[5] = {
1609 { .attrs = it87_attributes_fan[0] },
1610 { .attrs = it87_attributes_fan[1] },
1611 { .attrs = it87_attributes_fan[2] },
1612 { .attrs = it87_attributes_fan[3] },
1613 { .attrs = it87_attributes_fan[4] },
1614 };
1615
1616 static const struct attribute *it87_attributes_fan_div[] = {
1617 &sensor_dev_attr_fan1_div.dev_attr.attr,
1618 &sensor_dev_attr_fan2_div.dev_attr.attr,
1619 &sensor_dev_attr_fan3_div.dev_attr.attr,
1620 };
1621
1622 static struct attribute *it87_attributes_pwm[3][4+1] = { {
1623 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1624 &sensor_dev_attr_pwm1.dev_attr.attr,
1625 &dev_attr_pwm1_freq.attr,
1626 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1627 NULL
1628 }, {
1629 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1630 &sensor_dev_attr_pwm2.dev_attr.attr,
1631 &dev_attr_pwm2_freq.attr,
1632 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1633 NULL
1634 }, {
1635 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1636 &sensor_dev_attr_pwm3.dev_attr.attr,
1637 &dev_attr_pwm3_freq.attr,
1638 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1639 NULL
1640 } };
1641
1642 static const struct attribute_group it87_group_pwm[3] = {
1643 { .attrs = it87_attributes_pwm[0] },
1644 { .attrs = it87_attributes_pwm[1] },
1645 { .attrs = it87_attributes_pwm[2] },
1646 };
1647
1648 static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1649 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1650 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1651 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1652 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1653 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1654 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1655 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1656 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1657 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1658 NULL
1659 }, {
1660 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1661 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1662 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1663 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1664 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1665 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1666 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1667 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1668 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1669 NULL
1670 }, {
1671 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1672 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1673 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1674 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1675 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1676 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1677 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1678 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1679 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1680 NULL
1681 } };
1682
1683 static const struct attribute_group it87_group_autopwm[3] = {
1684 { .attrs = it87_attributes_autopwm[0] },
1685 { .attrs = it87_attributes_autopwm[1] },
1686 { .attrs = it87_attributes_autopwm[2] },
1687 };
1688
1689 static struct attribute *it87_attributes_fan_beep[] = {
1690 &sensor_dev_attr_fan1_beep.dev_attr.attr,
1691 &sensor_dev_attr_fan2_beep.dev_attr.attr,
1692 &sensor_dev_attr_fan3_beep.dev_attr.attr,
1693 &sensor_dev_attr_fan4_beep.dev_attr.attr,
1694 &sensor_dev_attr_fan5_beep.dev_attr.attr,
1695 };
1696
1697 static struct attribute *it87_attributes_vid[] = {
1698 &dev_attr_vrm.attr,
1699 &dev_attr_cpu0_vid.attr,
1700 NULL
1701 };
1702
1703 static const struct attribute_group it87_group_vid = {
1704 .attrs = it87_attributes_vid,
1705 };
1706
1707 static struct attribute *it87_attributes_label[] = {
1708 &sensor_dev_attr_in3_label.dev_attr.attr,
1709 &sensor_dev_attr_in7_label.dev_attr.attr,
1710 &sensor_dev_attr_in8_label.dev_attr.attr,
1711 &sensor_dev_attr_in9_label.dev_attr.attr,
1712 NULL
1713 };
1714
1715 static const struct attribute_group it87_group_label = {
1716 .attrs = it87_attributes_label,
1717 };
1718
1719 /* SuperIO detection - will change isa_address if a chip is found */
1720 static int __init it87_find(unsigned short *address,
1721 struct it87_sio_data *sio_data)
1722 {
1723 int err;
1724 u16 chip_type;
1725 const char *board_vendor, *board_name;
1726
1727 err = superio_enter();
1728 if (err)
1729 return err;
1730
1731 err = -ENODEV;
1732 chip_type = force_id ? force_id : superio_inw(DEVID);
1733
1734 switch (chip_type) {
1735 case IT8705F_DEVID:
1736 sio_data->type = it87;
1737 break;
1738 case IT8712F_DEVID:
1739 sio_data->type = it8712;
1740 break;
1741 case IT8716F_DEVID:
1742 case IT8726F_DEVID:
1743 sio_data->type = it8716;
1744 break;
1745 case IT8718F_DEVID:
1746 sio_data->type = it8718;
1747 break;
1748 case IT8720F_DEVID:
1749 sio_data->type = it8720;
1750 break;
1751 case IT8721F_DEVID:
1752 sio_data->type = it8721;
1753 break;
1754 case IT8728F_DEVID:
1755 sio_data->type = it8728;
1756 break;
1757 case IT8771E_DEVID:
1758 sio_data->type = it8771;
1759 break;
1760 case IT8772E_DEVID:
1761 sio_data->type = it8772;
1762 break;
1763 case IT8782F_DEVID:
1764 sio_data->type = it8782;
1765 break;
1766 case IT8783E_DEVID:
1767 sio_data->type = it8783;
1768 break;
1769 case IT8306E_DEVID:
1770 sio_data->type = it8603;
1771 break;
1772 case 0xffff: /* No device at all */
1773 goto exit;
1774 default:
1775 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1776 goto exit;
1777 }
1778
1779 superio_select(PME);
1780 if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1781 pr_info("Device not activated, skipping\n");
1782 goto exit;
1783 }
1784
1785 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1786 if (*address == 0) {
1787 pr_info("Base address not set, skipping\n");
1788 goto exit;
1789 }
1790
1791 err = 0;
1792 sio_data->revision = superio_inb(DEVREV) & 0x0f;
1793 pr_info("Found IT%04x%c chip at 0x%x, revision %d\n", chip_type,
1794 chip_type == 0x8771 || chip_type == 0x8772 ||
1795 chip_type == 0x8603 ? 'E' : 'F', *address,
1796 sio_data->revision);
1797
1798 /* in8 (Vbat) is always internal */
1799 sio_data->internal = (1 << 2);
1800 /* Only the IT8603E has in9 */
1801 if (sio_data->type != it8603)
1802 sio_data->skip_in |= (1 << 9);
1803
1804 /* Read GPIO config and VID value from LDN 7 (GPIO) */
1805 if (sio_data->type == it87) {
1806 /* The IT8705F doesn't have VID pins at all */
1807 sio_data->skip_vid = 1;
1808
1809 /* The IT8705F has a different LD number for GPIO */
1810 superio_select(5);
1811 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1812 } else if (sio_data->type == it8783) {
1813 int reg25, reg27, reg2a, reg2c, regef;
1814
1815 sio_data->skip_vid = 1; /* No VID */
1816
1817 superio_select(GPIO);
1818
1819 reg25 = superio_inb(IT87_SIO_GPIO1_REG);
1820 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1821 reg2a = superio_inb(IT87_SIO_PINX1_REG);
1822 reg2c = superio_inb(IT87_SIO_PINX2_REG);
1823 regef = superio_inb(IT87_SIO_SPI_REG);
1824
1825 /* Check if fan3 is there or not */
1826 if ((reg27 & (1 << 0)) || !(reg2c & (1 << 2)))
1827 sio_data->skip_fan |= (1 << 2);
1828 if ((reg25 & (1 << 4))
1829 || (!(reg2a & (1 << 1)) && (regef & (1 << 0))))
1830 sio_data->skip_pwm |= (1 << 2);
1831
1832 /* Check if fan2 is there or not */
1833 if (reg27 & (1 << 7))
1834 sio_data->skip_fan |= (1 << 1);
1835 if (reg27 & (1 << 3))
1836 sio_data->skip_pwm |= (1 << 1);
1837
1838 /* VIN5 */
1839 if ((reg27 & (1 << 0)) || (reg2c & (1 << 2)))
1840 sio_data->skip_in |= (1 << 5); /* No VIN5 */
1841
1842 /* VIN6 */
1843 if (reg27 & (1 << 1))
1844 sio_data->skip_in |= (1 << 6); /* No VIN6 */
1845
1846 /*
1847 * VIN7
1848 * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1849 */
1850 if (reg27 & (1 << 2)) {
1851 /*
1852 * The data sheet is a bit unclear regarding the
1853 * internal voltage divider for VCCH5V. It says
1854 * "This bit enables and switches VIN7 (pin 91) to the
1855 * internal voltage divider for VCCH5V".
1856 * This is different to other chips, where the internal
1857 * voltage divider would connect VIN7 to an internal
1858 * voltage source. Maybe that is the case here as well.
1859 *
1860 * Since we don't know for sure, re-route it if that is
1861 * not the case, and ask the user to report if the
1862 * resulting voltage is sane.
1863 */
1864 if (!(reg2c & (1 << 1))) {
1865 reg2c |= (1 << 1);
1866 superio_outb(IT87_SIO_PINX2_REG, reg2c);
1867 pr_notice("Routing internal VCCH5V to in7.\n");
1868 }
1869 pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1870 pr_notice("Please report if it displays a reasonable voltage.\n");
1871 }
1872
1873 if (reg2c & (1 << 0))
1874 sio_data->internal |= (1 << 0);
1875 if (reg2c & (1 << 1))
1876 sio_data->internal |= (1 << 1);
1877
1878 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1879 } else if (sio_data->type == it8603) {
1880 int reg27, reg29;
1881
1882 sio_data->skip_vid = 1; /* No VID */
1883 superio_select(GPIO);
1884
1885 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1886
1887 /* Check if fan3 is there or not */
1888 if (reg27 & (1 << 6))
1889 sio_data->skip_pwm |= (1 << 2);
1890 if (reg27 & (1 << 7))
1891 sio_data->skip_fan |= (1 << 2);
1892
1893 /* Check if fan2 is there or not */
1894 reg29 = superio_inb(IT87_SIO_GPIO5_REG);
1895 if (reg29 & (1 << 1))
1896 sio_data->skip_pwm |= (1 << 1);
1897 if (reg29 & (1 << 2))
1898 sio_data->skip_fan |= (1 << 1);
1899
1900 sio_data->skip_in |= (1 << 5); /* No VIN5 */
1901 sio_data->skip_in |= (1 << 6); /* No VIN6 */
1902
1903 /* no fan4 */
1904 sio_data->skip_pwm |= (1 << 3);
1905 sio_data->skip_fan |= (1 << 3);
1906
1907 sio_data->internal |= (1 << 1); /* in7 is VSB */
1908 sio_data->internal |= (1 << 3); /* in9 is AVCC */
1909
1910 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1911 } else {
1912 int reg;
1913 bool uart6;
1914
1915 superio_select(GPIO);
1916
1917 reg = superio_inb(IT87_SIO_GPIO3_REG);
1918 if (sio_data->type == it8721 || sio_data->type == it8728 ||
1919 sio_data->type == it8771 || sio_data->type == it8772 ||
1920 sio_data->type == it8782) {
1921 /*
1922 * IT8721F/IT8758E, and IT8782F don't have VID pins
1923 * at all, not sure about the IT8728F and compatibles.
1924 */
1925 sio_data->skip_vid = 1;
1926 } else {
1927 /* We need at least 4 VID pins */
1928 if (reg & 0x0f) {
1929 pr_info("VID is disabled (pins used for GPIO)\n");
1930 sio_data->skip_vid = 1;
1931 }
1932 }
1933
1934 /* Check if fan3 is there or not */
1935 if (reg & (1 << 6))
1936 sio_data->skip_pwm |= (1 << 2);
1937 if (reg & (1 << 7))
1938 sio_data->skip_fan |= (1 << 2);
1939
1940 /* Check if fan2 is there or not */
1941 reg = superio_inb(IT87_SIO_GPIO5_REG);
1942 if (reg & (1 << 1))
1943 sio_data->skip_pwm |= (1 << 1);
1944 if (reg & (1 << 2))
1945 sio_data->skip_fan |= (1 << 1);
1946
1947 if ((sio_data->type == it8718 || sio_data->type == it8720)
1948 && !(sio_data->skip_vid))
1949 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
1950
1951 reg = superio_inb(IT87_SIO_PINX2_REG);
1952
1953 uart6 = sio_data->type == it8782 && (reg & (1 << 2));
1954
1955 /*
1956 * The IT8720F has no VIN7 pin, so VCCH should always be
1957 * routed internally to VIN7 with an internal divider.
1958 * Curiously, there still is a configuration bit to control
1959 * this, which means it can be set incorrectly. And even
1960 * more curiously, many boards out there are improperly
1961 * configured, even though the IT8720F datasheet claims
1962 * that the internal routing of VCCH to VIN7 is the default
1963 * setting. So we force the internal routing in this case.
1964 *
1965 * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
1966 * If UART6 is enabled, re-route VIN7 to the internal divider
1967 * if that is not already the case.
1968 */
1969 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
1970 reg |= (1 << 1);
1971 superio_outb(IT87_SIO_PINX2_REG, reg);
1972 pr_notice("Routing internal VCCH to in7\n");
1973 }
1974 if (reg & (1 << 0))
1975 sio_data->internal |= (1 << 0);
1976 if ((reg & (1 << 1)) || sio_data->type == it8721 ||
1977 sio_data->type == it8728 ||
1978 sio_data->type == it8771 ||
1979 sio_data->type == it8772)
1980 sio_data->internal |= (1 << 1);
1981
1982 /*
1983 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
1984 * While VIN7 can be routed to the internal voltage divider,
1985 * VIN5 and VIN6 are not available if UART6 is enabled.
1986 *
1987 * Also, temp3 is not available if UART6 is enabled and TEMPIN3
1988 * is the temperature source. Since we can not read the
1989 * temperature source here, skip_temp is preliminary.
1990 */
1991 if (uart6) {
1992 sio_data->skip_in |= (1 << 5) | (1 << 6);
1993 sio_data->skip_temp |= (1 << 2);
1994 }
1995
1996 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1997 }
1998 if (sio_data->beep_pin)
1999 pr_info("Beeping is supported\n");
2000
2001 /* Disable specific features based on DMI strings */
2002 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
2003 board_name = dmi_get_system_info(DMI_BOARD_NAME);
2004 if (board_vendor && board_name) {
2005 if (strcmp(board_vendor, "nVIDIA") == 0
2006 && strcmp(board_name, "FN68PT") == 0) {
2007 /*
2008 * On the Shuttle SN68PT, FAN_CTL2 is apparently not
2009 * connected to a fan, but to something else. One user
2010 * has reported instant system power-off when changing
2011 * the PWM2 duty cycle, so we disable it.
2012 * I use the board name string as the trigger in case
2013 * the same board is ever used in other systems.
2014 */
2015 pr_info("Disabling pwm2 due to hardware constraints\n");
2016 sio_data->skip_pwm = (1 << 1);
2017 }
2018 }
2019
2020 exit:
2021 superio_exit();
2022 return err;
2023 }
2024
2025 static void it87_remove_files(struct device *dev)
2026 {
2027 struct it87_data *data = platform_get_drvdata(pdev);
2028 struct it87_sio_data *sio_data = dev_get_platdata(dev);
2029 int i;
2030
2031 sysfs_remove_group(&dev->kobj, &it87_group);
2032 for (i = 0; i < 10; i++) {
2033 if (sio_data->skip_in & (1 << i))
2034 continue;
2035 sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
2036 if (it87_attributes_in_beep[i])
2037 sysfs_remove_file(&dev->kobj,
2038 it87_attributes_in_beep[i]);
2039 }
2040 for (i = 0; i < 3; i++) {
2041 if (!(data->has_temp & (1 << i)))
2042 continue;
2043 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
2044 if (has_temp_offset(data))
2045 sysfs_remove_file(&dev->kobj,
2046 it87_attributes_temp_offset[i]);
2047 if (sio_data->beep_pin)
2048 sysfs_remove_file(&dev->kobj,
2049 it87_attributes_temp_beep[i]);
2050 }
2051 for (i = 0; i < 5; i++) {
2052 if (!(data->has_fan & (1 << i)))
2053 continue;
2054 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
2055 if (sio_data->beep_pin)
2056 sysfs_remove_file(&dev->kobj,
2057 it87_attributes_fan_beep[i]);
2058 if (i < 3 && !has_16bit_fans(data))
2059 sysfs_remove_file(&dev->kobj,
2060 it87_attributes_fan_div[i]);
2061 }
2062 for (i = 0; i < 3; i++) {
2063 if (sio_data->skip_pwm & (1 << 0))
2064 continue;
2065 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
2066 if (has_old_autopwm(data))
2067 sysfs_remove_group(&dev->kobj,
2068 &it87_group_autopwm[i]);
2069 }
2070 if (!sio_data->skip_vid)
2071 sysfs_remove_group(&dev->kobj, &it87_group_vid);
2072 sysfs_remove_group(&dev->kobj, &it87_group_label);
2073 }
2074
2075 static int it87_probe(struct platform_device *pdev)
2076 {
2077 struct it87_data *data;
2078 struct resource *res;
2079 struct device *dev = &pdev->dev;
2080 struct it87_sio_data *sio_data = dev_get_platdata(dev);
2081 int err = 0, i;
2082 int enable_pwm_interface;
2083 int fan_beep_need_rw;
2084
2085 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2086 if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
2087 DRVNAME)) {
2088 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
2089 (unsigned long)res->start,
2090 (unsigned long)(res->start + IT87_EC_EXTENT - 1));
2091 return -EBUSY;
2092 }
2093
2094 data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
2095 if (!data)
2096 return -ENOMEM;
2097
2098 data->addr = res->start;
2099 data->type = sio_data->type;
2100 data->features = it87_devices[sio_data->type].features;
2101 data->peci_mask = it87_devices[sio_data->type].peci_mask;
2102 data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
2103 data->name = it87_devices[sio_data->type].name;
2104 /*
2105 * IT8705F Datasheet 0.4.1, 3h == Version G.
2106 * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
2107 * These are the first revisions with 16-bit tachometer support.
2108 */
2109 switch (data->type) {
2110 case it87:
2111 if (sio_data->revision >= 0x03) {
2112 data->features &= ~FEAT_OLD_AUTOPWM;
2113 data->features |= FEAT_16BIT_FANS;
2114 }
2115 break;
2116 case it8712:
2117 if (sio_data->revision >= 0x08) {
2118 data->features &= ~FEAT_OLD_AUTOPWM;
2119 data->features |= FEAT_16BIT_FANS;
2120 }
2121 break;
2122 default:
2123 break;
2124 }
2125
2126 /* Now, we do the remaining detection. */
2127 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
2128 || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
2129 return -ENODEV;
2130
2131 platform_set_drvdata(pdev, data);
2132
2133 mutex_init(&data->update_lock);
2134
2135 /* Check PWM configuration */
2136 enable_pwm_interface = it87_check_pwm(dev);
2137
2138 /* Starting with IT8721F, we handle scaling of internal voltages */
2139 if (has_12mv_adc(data)) {
2140 if (sio_data->internal & (1 << 0))
2141 data->in_scaled |= (1 << 3); /* in3 is AVCC */
2142 if (sio_data->internal & (1 << 1))
2143 data->in_scaled |= (1 << 7); /* in7 is VSB */
2144 if (sio_data->internal & (1 << 2))
2145 data->in_scaled |= (1 << 8); /* in8 is Vbat */
2146 if (sio_data->internal & (1 << 3))
2147 data->in_scaled |= (1 << 9); /* in9 is AVCC */
2148 } else if (sio_data->type == it8782 || sio_data->type == it8783) {
2149 if (sio_data->internal & (1 << 0))
2150 data->in_scaled |= (1 << 3); /* in3 is VCC5V */
2151 if (sio_data->internal & (1 << 1))
2152 data->in_scaled |= (1 << 7); /* in7 is VCCH5V */
2153 }
2154
2155 data->has_temp = 0x07;
2156 if (sio_data->skip_temp & (1 << 2)) {
2157 if (sio_data->type == it8782
2158 && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2159 data->has_temp &= ~(1 << 2);
2160 }
2161
2162 /* Initialize the IT87 chip */
2163 it87_init_device(pdev);
2164
2165 /* Register sysfs hooks */
2166 err = sysfs_create_group(&dev->kobj, &it87_group);
2167 if (err)
2168 return err;
2169
2170 for (i = 0; i < 10; i++) {
2171 if (sio_data->skip_in & (1 << i))
2172 continue;
2173 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2174 if (err)
2175 goto error;
2176 if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2177 err = sysfs_create_file(&dev->kobj,
2178 it87_attributes_in_beep[i]);
2179 if (err)
2180 goto error;
2181 }
2182 }
2183
2184 for (i = 0; i < 3; i++) {
2185 if (!(data->has_temp & (1 << i)))
2186 continue;
2187 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2188 if (err)
2189 goto error;
2190 if (has_temp_offset(data)) {
2191 err = sysfs_create_file(&dev->kobj,
2192 it87_attributes_temp_offset[i]);
2193 if (err)
2194 goto error;
2195 }
2196 if (sio_data->beep_pin) {
2197 err = sysfs_create_file(&dev->kobj,
2198 it87_attributes_temp_beep[i]);
2199 if (err)
2200 goto error;
2201 }
2202 }
2203
2204 /* Do not create fan files for disabled fans */
2205 fan_beep_need_rw = 1;
2206 for (i = 0; i < 5; i++) {
2207 if (!(data->has_fan & (1 << i)))
2208 continue;
2209 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2210 if (err)
2211 goto error;
2212
2213 if (i < 3 && !has_16bit_fans(data)) {
2214 err = sysfs_create_file(&dev->kobj,
2215 it87_attributes_fan_div[i]);
2216 if (err)
2217 goto error;
2218 }
2219
2220 if (sio_data->beep_pin) {
2221 err = sysfs_create_file(&dev->kobj,
2222 it87_attributes_fan_beep[i]);
2223 if (err)
2224 goto error;
2225 if (!fan_beep_need_rw)
2226 continue;
2227
2228 /*
2229 * As we have a single beep enable bit for all fans,
2230 * only the first enabled fan has a writable attribute
2231 * for it.
2232 */
2233 if (sysfs_chmod_file(&dev->kobj,
2234 it87_attributes_fan_beep[i],
2235 S_IRUGO | S_IWUSR))
2236 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2237 i + 1);
2238 fan_beep_need_rw = 0;
2239 }
2240 }
2241
2242 if (enable_pwm_interface) {
2243 for (i = 0; i < 3; i++) {
2244 if (sio_data->skip_pwm & (1 << i))
2245 continue;
2246 err = sysfs_create_group(&dev->kobj,
2247 &it87_group_pwm[i]);
2248 if (err)
2249 goto error;
2250
2251 if (!has_old_autopwm(data))
2252 continue;
2253 err = sysfs_create_group(&dev->kobj,
2254 &it87_group_autopwm[i]);
2255 if (err)
2256 goto error;
2257 }
2258 }
2259
2260 if (!sio_data->skip_vid) {
2261 data->vrm = vid_which_vrm();
2262 /* VID reading from Super-I/O config space if available */
2263 data->vid = sio_data->vid_value;
2264 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2265 if (err)
2266 goto error;
2267 }
2268
2269 /* Export labels for internal sensors */
2270 for (i = 0; i < 4; i++) {
2271 if (!(sio_data->internal & (1 << i)))
2272 continue;
2273 err = sysfs_create_file(&dev->kobj,
2274 it87_attributes_label[i]);
2275 if (err)
2276 goto error;
2277 }
2278
2279 data->hwmon_dev = hwmon_device_register(dev);
2280 if (IS_ERR(data->hwmon_dev)) {
2281 err = PTR_ERR(data->hwmon_dev);
2282 goto error;
2283 }
2284
2285 return 0;
2286
2287 error:
2288 it87_remove_files(dev);
2289 return err;
2290 }
2291
2292 static int it87_remove(struct platform_device *pdev)
2293 {
2294 struct it87_data *data = platform_get_drvdata(pdev);
2295
2296 hwmon_device_unregister(data->hwmon_dev);
2297 it87_remove_files(&pdev->dev);
2298
2299 return 0;
2300 }
2301
2302 /*
2303 * Must be called with data->update_lock held, except during initialization.
2304 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2305 * would slow down the IT87 access and should not be necessary.
2306 */
2307 static int it87_read_value(struct it87_data *data, u8 reg)
2308 {
2309 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2310 return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2311 }
2312
2313 /*
2314 * Must be called with data->update_lock held, except during initialization.
2315 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2316 * would slow down the IT87 access and should not be necessary.
2317 */
2318 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2319 {
2320 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2321 outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2322 }
2323
2324 /* Return 1 if and only if the PWM interface is safe to use */
2325 static int it87_check_pwm(struct device *dev)
2326 {
2327 struct it87_data *data = dev_get_drvdata(dev);
2328 /*
2329 * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2330 * and polarity set to active low is sign that this is the case so we
2331 * disable pwm control to protect the user.
2332 */
2333 int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2334 if ((tmp & 0x87) == 0) {
2335 if (fix_pwm_polarity) {
2336 /*
2337 * The user asks us to attempt a chip reconfiguration.
2338 * This means switching to active high polarity and
2339 * inverting all fan speed values.
2340 */
2341 int i;
2342 u8 pwm[3];
2343
2344 for (i = 0; i < 3; i++)
2345 pwm[i] = it87_read_value(data,
2346 IT87_REG_PWM(i));
2347
2348 /*
2349 * If any fan is in automatic pwm mode, the polarity
2350 * might be correct, as suspicious as it seems, so we
2351 * better don't change anything (but still disable the
2352 * PWM interface).
2353 */
2354 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2355 dev_info(dev,
2356 "Reconfiguring PWM to active high polarity\n");
2357 it87_write_value(data, IT87_REG_FAN_CTL,
2358 tmp | 0x87);
2359 for (i = 0; i < 3; i++)
2360 it87_write_value(data,
2361 IT87_REG_PWM(i),
2362 0x7f & ~pwm[i]);
2363 return 1;
2364 }
2365
2366 dev_info(dev,
2367 "PWM configuration is too broken to be fixed\n");
2368 }
2369
2370 dev_info(dev,
2371 "Detected broken BIOS defaults, disabling PWM interface\n");
2372 return 0;
2373 } else if (fix_pwm_polarity) {
2374 dev_info(dev,
2375 "PWM configuration looks sane, won't touch\n");
2376 }
2377
2378 return 1;
2379 }
2380
2381 /* Called when we have found a new IT87. */
2382 static void it87_init_device(struct platform_device *pdev)
2383 {
2384 struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev);
2385 struct it87_data *data = platform_get_drvdata(pdev);
2386 int tmp, i;
2387 u8 mask;
2388
2389 /*
2390 * For each PWM channel:
2391 * - If it is in automatic mode, setting to manual mode should set
2392 * the fan to full speed by default.
2393 * - If it is in manual mode, we need a mapping to temperature
2394 * channels to use when later setting to automatic mode later.
2395 * Use a 1:1 mapping by default (we are clueless.)
2396 * In both cases, the value can (and should) be changed by the user
2397 * prior to switching to a different mode.
2398 * Note that this is no longer needed for the IT8721F and later, as
2399 * these have separate registers for the temperature mapping and the
2400 * manual duty cycle.
2401 */
2402 for (i = 0; i < 3; i++) {
2403 data->pwm_temp_map[i] = i;
2404 data->pwm_duty[i] = 0x7f; /* Full speed */
2405 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */
2406 }
2407
2408 /*
2409 * Some chips seem to have default value 0xff for all limit
2410 * registers. For low voltage limits it makes no sense and triggers
2411 * alarms, so change to 0 instead. For high temperature limits, it
2412 * means -1 degree C, which surprisingly doesn't trigger an alarm,
2413 * but is still confusing, so change to 127 degrees C.
2414 */
2415 for (i = 0; i < 8; i++) {
2416 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2417 if (tmp == 0xff)
2418 it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2419 }
2420 for (i = 0; i < 3; i++) {
2421 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2422 if (tmp == 0xff)
2423 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2424 }
2425
2426 /*
2427 * Temperature channels are not forcibly enabled, as they can be
2428 * set to two different sensor types and we can't guess which one
2429 * is correct for a given system. These channels can be enabled at
2430 * run-time through the temp{1-3}_type sysfs accessors if needed.
2431 */
2432
2433 /* Check if voltage monitors are reset manually or by some reason */
2434 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2435 if ((tmp & 0xff) == 0) {
2436 /* Enable all voltage monitors */
2437 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2438 }
2439
2440 /* Check if tachometers are reset manually or by some reason */
2441 mask = 0x70 & ~(sio_data->skip_fan << 4);
2442 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2443 if ((data->fan_main_ctrl & mask) == 0) {
2444 /* Enable all fan tachometers */
2445 data->fan_main_ctrl |= mask;
2446 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2447 data->fan_main_ctrl);
2448 }
2449 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2450
2451 /* Set tachometers to 16-bit mode if needed, IT8603E (and IT8728F?)
2452 * has it by default */
2453 if (has_16bit_fans(data) && data->type != it8603) {
2454 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2455 if (~tmp & 0x07 & data->has_fan) {
2456 dev_dbg(&pdev->dev,
2457 "Setting fan1-3 to 16-bit mode\n");
2458 it87_write_value(data, IT87_REG_FAN_16BIT,
2459 tmp | 0x07);
2460 }
2461 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
2462 if (data->type != it87 && data->type != it8782 &&
2463 data->type != it8783) {
2464 if (tmp & (1 << 4))
2465 data->has_fan |= (1 << 3); /* fan4 enabled */
2466 if (tmp & (1 << 5))
2467 data->has_fan |= (1 << 4); /* fan5 enabled */
2468 }
2469 }
2470
2471 /* Fan input pins may be used for alternative functions */
2472 data->has_fan &= ~sio_data->skip_fan;
2473
2474 /* Start monitoring */
2475 it87_write_value(data, IT87_REG_CONFIG,
2476 (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2477 | (update_vbat ? 0x41 : 0x01));
2478 }
2479
2480 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2481 {
2482 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2483 if (has_newer_autopwm(data)) {
2484 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2485 data->pwm_duty[nr] = it87_read_value(data,
2486 IT87_REG_PWM_DUTY(nr));
2487 } else {
2488 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
2489 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2490 else /* Manual mode */
2491 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2492 }
2493
2494 if (has_old_autopwm(data)) {
2495 int i;
2496
2497 for (i = 0; i < 5 ; i++)
2498 data->auto_temp[nr][i] = it87_read_value(data,
2499 IT87_REG_AUTO_TEMP(nr, i));
2500 for (i = 0; i < 3 ; i++)
2501 data->auto_pwm[nr][i] = it87_read_value(data,
2502 IT87_REG_AUTO_PWM(nr, i));
2503 }
2504 }
2505
2506 static struct it87_data *it87_update_device(struct device *dev)
2507 {
2508 struct it87_data *data = dev_get_drvdata(dev);
2509 int i;
2510
2511 mutex_lock(&data->update_lock);
2512
2513 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2514 || !data->valid) {
2515 if (update_vbat) {
2516 /*
2517 * Cleared after each update, so reenable. Value
2518 * returned by this read will be previous value
2519 */
2520 it87_write_value(data, IT87_REG_CONFIG,
2521 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2522 }
2523 for (i = 0; i <= 7; i++) {
2524 data->in[i][0] =
2525 it87_read_value(data, IT87_REG_VIN(i));
2526 data->in[i][1] =
2527 it87_read_value(data, IT87_REG_VIN_MIN(i));
2528 data->in[i][2] =
2529 it87_read_value(data, IT87_REG_VIN_MAX(i));
2530 }
2531 /* in8 (battery) has no limit registers */
2532 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2533 if (data->type == it8603)
2534 data->in[9][0] = it87_read_value(data, 0x2f);
2535
2536 for (i = 0; i < 5; i++) {
2537 /* Skip disabled fans */
2538 if (!(data->has_fan & (1 << i)))
2539 continue;
2540
2541 data->fan[i][1] =
2542 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2543 data->fan[i][0] = it87_read_value(data,
2544 IT87_REG_FAN[i]);
2545 /* Add high byte if in 16-bit mode */
2546 if (has_16bit_fans(data)) {
2547 data->fan[i][0] |= it87_read_value(data,
2548 IT87_REG_FANX[i]) << 8;
2549 data->fan[i][1] |= it87_read_value(data,
2550 IT87_REG_FANX_MIN[i]) << 8;
2551 }
2552 }
2553 for (i = 0; i < 3; i++) {
2554 if (!(data->has_temp & (1 << i)))
2555 continue;
2556 data->temp[i][0] =
2557 it87_read_value(data, IT87_REG_TEMP(i));
2558 data->temp[i][1] =
2559 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2560 data->temp[i][2] =
2561 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2562 if (has_temp_offset(data))
2563 data->temp[i][3] =
2564 it87_read_value(data,
2565 IT87_REG_TEMP_OFFSET[i]);
2566 }
2567
2568 /* Newer chips don't have clock dividers */
2569 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2570 i = it87_read_value(data, IT87_REG_FAN_DIV);
2571 data->fan_div[0] = i & 0x07;
2572 data->fan_div[1] = (i >> 3) & 0x07;
2573 data->fan_div[2] = (i & 0x40) ? 3 : 1;
2574 }
2575
2576 data->alarms =
2577 it87_read_value(data, IT87_REG_ALARM1) |
2578 (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2579 (it87_read_value(data, IT87_REG_ALARM3) << 16);
2580 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2581
2582 data->fan_main_ctrl = it87_read_value(data,
2583 IT87_REG_FAN_MAIN_CTRL);
2584 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2585 for (i = 0; i < 3; i++)
2586 it87_update_pwm_ctrl(data, i);
2587
2588 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2589 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
2590 /*
2591 * The IT8705F does not have VID capability.
2592 * The IT8718F and later don't use IT87_REG_VID for the
2593 * same purpose.
2594 */
2595 if (data->type == it8712 || data->type == it8716) {
2596 data->vid = it87_read_value(data, IT87_REG_VID);
2597 /*
2598 * The older IT8712F revisions had only 5 VID pins,
2599 * but we assume it is always safe to read 6 bits.
2600 */
2601 data->vid &= 0x3f;
2602 }
2603 data->last_updated = jiffies;
2604 data->valid = 1;
2605 }
2606
2607 mutex_unlock(&data->update_lock);
2608
2609 return data;
2610 }
2611
2612 static int __init it87_device_add(unsigned short address,
2613 const struct it87_sio_data *sio_data)
2614 {
2615 struct resource res = {
2616 .start = address + IT87_EC_OFFSET,
2617 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2618 .name = DRVNAME,
2619 .flags = IORESOURCE_IO,
2620 };
2621 int err;
2622
2623 err = acpi_check_resource_conflict(&res);
2624 if (err)
2625 goto exit;
2626
2627 pdev = platform_device_alloc(DRVNAME, address);
2628 if (!pdev) {
2629 err = -ENOMEM;
2630 pr_err("Device allocation failed\n");
2631 goto exit;
2632 }
2633
2634 err = platform_device_add_resources(pdev, &res, 1);
2635 if (err) {
2636 pr_err("Device resource addition failed (%d)\n", err);
2637 goto exit_device_put;
2638 }
2639
2640 err = platform_device_add_data(pdev, sio_data,
2641 sizeof(struct it87_sio_data));
2642 if (err) {
2643 pr_err("Platform data allocation failed\n");
2644 goto exit_device_put;
2645 }
2646
2647 err = platform_device_add(pdev);
2648 if (err) {
2649 pr_err("Device addition failed (%d)\n", err);
2650 goto exit_device_put;
2651 }
2652
2653 return 0;
2654
2655 exit_device_put:
2656 platform_device_put(pdev);
2657 exit:
2658 return err;
2659 }
2660
2661 static int __init sm_it87_init(void)
2662 {
2663 int err;
2664 unsigned short isa_address = 0;
2665 struct it87_sio_data sio_data;
2666
2667 memset(&sio_data, 0, sizeof(struct it87_sio_data));
2668 err = it87_find(&isa_address, &sio_data);
2669 if (err)
2670 return err;
2671 err = platform_driver_register(&it87_driver);
2672 if (err)
2673 return err;
2674
2675 err = it87_device_add(isa_address, &sio_data);
2676 if (err) {
2677 platform_driver_unregister(&it87_driver);
2678 return err;
2679 }
2680
2681 return 0;
2682 }
2683
2684 static void __exit sm_it87_exit(void)
2685 {
2686 platform_device_unregister(pdev);
2687 platform_driver_unregister(&it87_driver);
2688 }
2689
2690
2691 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <jdelvare@suse.de>");
2692 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2693 module_param(update_vbat, bool, 0);
2694 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2695 module_param(fix_pwm_polarity, bool, 0);
2696 MODULE_PARM_DESC(fix_pwm_polarity,
2697 "Force PWM polarity to active high (DANGEROUS)");
2698 MODULE_LICENSE("GPL");
2699
2700 module_init(sm_it87_init);
2701 module_exit(sm_it87_exit);
Linux with added FPC-III support