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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * nct6775 - Platform driver for the hardware monitoring
4 * functionality of Nuvoton NCT677x Super-I/O chips
5 *
6 * Copyright (C) 2012 Guenter Roeck <linux@roeck-us.net>
7 */
8
9#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10
11#include <linux/acpi.h>
12#include <linux/dmi.h>
13#include <linux/hwmon-sysfs.h>
14#include <linux/hwmon-vid.h>
15#include <linux/init.h>
16#include <linux/io.h>
17#include <linux/module.h>
18#include <linux/platform_device.h>
19#include <linux/regmap.h>
20
21#include "nct6775.h"
22
23enum sensor_access { access_direct, access_asuswmi };
24
25static const char * const nct6775_sio_names[] __initconst = {
26 [nct6106] = "NCT6106D",
27 [nct6116] = "NCT6116D",
28 [nct6775] = "NCT6775F",
29 [nct6776] = "NCT6776D/F",
30 [nct6779] = "NCT6779D",
31 [nct6791] = "NCT6791D",
32 [nct6792] = "NCT6792D",
33 [nct6793] = "NCT6793D",
34 [nct6795] = "NCT6795D",
35 [nct6796] = "NCT6796D",
36 [nct6797] = "NCT6797D",
37 [nct6798] = "NCT6798D",
38 [nct6799] = "NCT6796D-S/NCT6799D-R",
39};
40
41static unsigned short force_id;
42module_param(force_id, ushort, 0);
43MODULE_PARM_DESC(force_id, "Override the detected device ID");
44
45static unsigned short fan_debounce;
46module_param(fan_debounce, ushort, 0);
47MODULE_PARM_DESC(fan_debounce, "Enable debouncing for fan RPM signal");
48
49#define DRVNAME "nct6775"
50
51#define NCT6775_PORT_CHIPID 0x58
52
53/*
54 * ISA constants
55 */
56
57#define IOREGION_ALIGNMENT (~7)
58#define IOREGION_OFFSET 5
59#define IOREGION_LENGTH 2
60#define ADDR_REG_OFFSET 0
61#define DATA_REG_OFFSET 1
62
63/*
64 * Super-I/O constants and functions
65 */
66
67#define NCT6775_LD_ACPI 0x0a
68#define NCT6775_LD_HWM 0x0b
69#define NCT6775_LD_VID 0x0d
70#define NCT6775_LD_12 0x12
71
72#define SIO_REG_LDSEL 0x07 /* Logical device select */
73#define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
74#define SIO_REG_ENABLE 0x30 /* Logical device enable */
75#define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */
76
77#define SIO_NCT6106_ID 0xc450
78#define SIO_NCT6116_ID 0xd280
79#define SIO_NCT6775_ID 0xb470
80#define SIO_NCT6776_ID 0xc330
81#define SIO_NCT6779_ID 0xc560
82#define SIO_NCT6791_ID 0xc800
83#define SIO_NCT6792_ID 0xc910
84#define SIO_NCT6793_ID 0xd120
85#define SIO_NCT6795_ID 0xd350
86#define SIO_NCT6796_ID 0xd420
87#define SIO_NCT6797_ID 0xd450
88#define SIO_NCT6798_ID 0xd428
89#define SIO_NCT6799_ID 0xd800
90#define SIO_ID_MASK 0xFFF8
91
92/*
93 * Control registers
94 */
95#define NCT6775_REG_CR_FAN_DEBOUNCE 0xf0
96
97struct nct6775_sio_data {
98 int sioreg;
99 int ld;
100 enum kinds kind;
101 enum sensor_access access;
102
103 /* superio_() callbacks */
104 void (*sio_outb)(struct nct6775_sio_data *sio_data, int reg, int val);
105 int (*sio_inb)(struct nct6775_sio_data *sio_data, int reg);
106 void (*sio_select)(struct nct6775_sio_data *sio_data, int ld);
107 int (*sio_enter)(struct nct6775_sio_data *sio_data);
108 void (*sio_exit)(struct nct6775_sio_data *sio_data);
109};
110
111#define ASUSWMI_METHOD "WMBD"
112#define ASUSWMI_METHODID_RSIO 0x5253494F
113#define ASUSWMI_METHODID_WSIO 0x5753494F
114#define ASUSWMI_METHODID_RHWM 0x5248574D
115#define ASUSWMI_METHODID_WHWM 0x5748574D
116#define ASUSWMI_UNSUPPORTED_METHOD 0xFFFFFFFE
117#define ASUSWMI_DEVICE_HID "PNP0C14"
118#define ASUSWMI_DEVICE_UID "ASUSWMI"
119#define ASUSMSI_DEVICE_UID "AsusMbSwInterface"
120
121#if IS_ENABLED(CONFIG_ACPI)
122/*
123 * ASUS boards have only one device with WMI "WMBD" method and have provided
124 * access to only one SuperIO chip at 0x0290.
125 */
126static struct acpi_device *asus_acpi_dev;
127#endif
128
129static int nct6775_asuswmi_evaluate_method(u32 method_id, u8 bank, u8 reg, u8 val, u32 *retval)
130{
131#if IS_ENABLED(CONFIG_ACPI)
132 acpi_handle handle = acpi_device_handle(asus_acpi_dev);
133 u32 args = bank | (reg << 8) | (val << 16);
134 struct acpi_object_list input;
135 union acpi_object params[3];
136 unsigned long long result;
137 acpi_status status;
138
139 params[0].type = ACPI_TYPE_INTEGER;
140 params[0].integer.value = 0;
141 params[1].type = ACPI_TYPE_INTEGER;
142 params[1].integer.value = method_id;
143 params[2].type = ACPI_TYPE_BUFFER;
144 params[2].buffer.length = sizeof(args);
145 params[2].buffer.pointer = (void *)&args;
146 input.count = 3;
147 input.pointer = params;
148
149 status = acpi_evaluate_integer(handle, ASUSWMI_METHOD, &input, &result);
150 if (ACPI_FAILURE(status))
151 return -EIO;
152
153 if (retval)
154 *retval = result;
155
156 return 0;
157#else
158 return -EOPNOTSUPP;
159#endif
160}
161
162static inline int nct6775_asuswmi_write(u8 bank, u8 reg, u8 val)
163{
164 return nct6775_asuswmi_evaluate_method(ASUSWMI_METHODID_WHWM, bank,
165 reg, val, NULL);
166}
167
168static inline int nct6775_asuswmi_read(u8 bank, u8 reg, u8 *val)
169{
170 u32 ret, tmp = 0;
171
172 ret = nct6775_asuswmi_evaluate_method(ASUSWMI_METHODID_RHWM, bank,
173 reg, 0, &tmp);
174 *val = tmp;
175 return ret;
176}
177
178static int superio_wmi_inb(struct nct6775_sio_data *sio_data, int reg)
179{
180 int tmp = 0;
181
182 nct6775_asuswmi_evaluate_method(ASUSWMI_METHODID_RSIO, sio_data->ld,
183 reg, 0, &tmp);
184 return tmp;
185}
186
187static void superio_wmi_outb(struct nct6775_sio_data *sio_data, int reg, int val)
188{
189 nct6775_asuswmi_evaluate_method(ASUSWMI_METHODID_WSIO, sio_data->ld,
190 reg, val, NULL);
191}
192
193static void superio_wmi_select(struct nct6775_sio_data *sio_data, int ld)
194{
195 sio_data->ld = ld;
196}
197
198static int superio_wmi_enter(struct nct6775_sio_data *sio_data)
199{
200 return 0;
201}
202
203static void superio_wmi_exit(struct nct6775_sio_data *sio_data)
204{
205}
206
207static void superio_outb(struct nct6775_sio_data *sio_data, int reg, int val)
208{
209 int ioreg = sio_data->sioreg;
210
211 outb(reg, ioreg);
212 outb(val, ioreg + 1);
213}
214
215static int superio_inb(struct nct6775_sio_data *sio_data, int reg)
216{
217 int ioreg = sio_data->sioreg;
218
219 outb(reg, ioreg);
220 return inb(ioreg + 1);
221}
222
223static void superio_select(struct nct6775_sio_data *sio_data, int ld)
224{
225 int ioreg = sio_data->sioreg;
226
227 outb(SIO_REG_LDSEL, ioreg);
228 outb(ld, ioreg + 1);
229}
230
231static int superio_enter(struct nct6775_sio_data *sio_data)
232{
233 int ioreg = sio_data->sioreg;
234
235 /*
236 * Try to reserve <ioreg> and <ioreg + 1> for exclusive access.
237 */
238 if (!request_muxed_region(ioreg, 2, DRVNAME))
239 return -EBUSY;
240
241 outb(0x87, ioreg);
242 outb(0x87, ioreg);
243
244 return 0;
245}
246
247static void superio_exit(struct nct6775_sio_data *sio_data)
248{
249 int ioreg = sio_data->sioreg;
250
251 outb(0xaa, ioreg);
252 outb(0x02, ioreg);
253 outb(0x02, ioreg + 1);
254 release_region(ioreg, 2);
255}
256
257static inline void nct6775_wmi_set_bank(struct nct6775_data *data, u16 reg)
258{
259 u8 bank = reg >> 8;
260
261 data->bank = bank;
262}
263
264static int nct6775_wmi_reg_read(void *ctx, unsigned int reg, unsigned int *val)
265{
266 struct nct6775_data *data = ctx;
267 int err, word_sized = nct6775_reg_is_word_sized(data, reg);
268 u8 tmp = 0;
269 u16 res;
270
271 nct6775_wmi_set_bank(data, reg);
272
273 err = nct6775_asuswmi_read(data->bank, reg & 0xff, &tmp);
274 if (err)
275 return err;
276
277 res = tmp;
278 if (word_sized) {
279 err = nct6775_asuswmi_read(data->bank, (reg & 0xff) + 1, &tmp);
280 if (err)
281 return err;
282
283 res = (res << 8) + tmp;
284 }
285 *val = res;
286 return 0;
287}
288
289static int nct6775_wmi_reg_write(void *ctx, unsigned int reg, unsigned int value)
290{
291 struct nct6775_data *data = ctx;
292 int res, word_sized = nct6775_reg_is_word_sized(data, reg);
293
294 nct6775_wmi_set_bank(data, reg);
295
296 if (word_sized) {
297 res = nct6775_asuswmi_write(data->bank, reg & 0xff, value >> 8);
298 if (res)
299 return res;
300
301 res = nct6775_asuswmi_write(data->bank, (reg & 0xff) + 1, value);
302 } else {
303 res = nct6775_asuswmi_write(data->bank, reg & 0xff, value);
304 }
305
306 return res;
307}
308
309/*
310 * On older chips, only registers 0x50-0x5f are banked.
311 * On more recent chips, all registers are banked.
312 * Assume that is the case and set the bank number for each access.
313 * Cache the bank number so it only needs to be set if it changes.
314 */
315static inline void nct6775_set_bank(struct nct6775_data *data, u16 reg)
316{
317 u8 bank = reg >> 8;
318
319 if (data->bank != bank) {
320 outb_p(NCT6775_REG_BANK, data->addr + ADDR_REG_OFFSET);
321 outb_p(bank, data->addr + DATA_REG_OFFSET);
322 data->bank = bank;
323 }
324}
325
326static int nct6775_reg_read(void *ctx, unsigned int reg, unsigned int *val)
327{
328 struct nct6775_data *data = ctx;
329 int word_sized = nct6775_reg_is_word_sized(data, reg);
330
331 nct6775_set_bank(data, reg);
332 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
333 *val = inb_p(data->addr + DATA_REG_OFFSET);
334 if (word_sized) {
335 outb_p((reg & 0xff) + 1,
336 data->addr + ADDR_REG_OFFSET);
337 *val = (*val << 8) + inb_p(data->addr + DATA_REG_OFFSET);
338 }
339 return 0;
340}
341
342static int nct6775_reg_write(void *ctx, unsigned int reg, unsigned int value)
343{
344 struct nct6775_data *data = ctx;
345 int word_sized = nct6775_reg_is_word_sized(data, reg);
346
347 nct6775_set_bank(data, reg);
348 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
349 if (word_sized) {
350 outb_p(value >> 8, data->addr + DATA_REG_OFFSET);
351 outb_p((reg & 0xff) + 1,
352 data->addr + ADDR_REG_OFFSET);
353 }
354 outb_p(value & 0xff, data->addr + DATA_REG_OFFSET);
355 return 0;
356}
357
358static void nct6791_enable_io_mapping(struct nct6775_sio_data *sio_data)
359{
360 int val;
361
362 val = sio_data->sio_inb(sio_data, NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE);
363 if (val & 0x10) {
364 pr_info("Enabling hardware monitor logical device mappings.\n");
365 sio_data->sio_outb(sio_data, NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE,
366 val & ~0x10);
367 }
368}
369
370static int nct6775_suspend(struct device *dev)
371{
372 int err;
373 u16 tmp;
374 struct nct6775_data *data = nct6775_update_device(dev);
375
376 if (IS_ERR(data))
377 return PTR_ERR(data);
378
379 mutex_lock(&data->update_lock);
380 err = nct6775_read_value(data, data->REG_VBAT, &tmp);
381 if (err)
382 goto out;
383 data->vbat = tmp;
384 if (data->kind == nct6775) {
385 err = nct6775_read_value(data, NCT6775_REG_FANDIV1, &tmp);
386 if (err)
387 goto out;
388 data->fandiv1 = tmp;
389
390 err = nct6775_read_value(data, NCT6775_REG_FANDIV2, &tmp);
391 if (err)
392 goto out;
393 data->fandiv2 = tmp;
394 }
395out:
396 mutex_unlock(&data->update_lock);
397
398 return err;
399}
400
401static int nct6775_resume(struct device *dev)
402{
403 struct nct6775_data *data = dev_get_drvdata(dev);
404 struct nct6775_sio_data *sio_data = dev_get_platdata(dev);
405 int i, j, err = 0;
406 u8 reg;
407
408 mutex_lock(&data->update_lock);
409 data->bank = 0xff; /* Force initial bank selection */
410
411 err = sio_data->sio_enter(sio_data);
412 if (err)
413 goto abort;
414
415 sio_data->sio_select(sio_data, NCT6775_LD_HWM);
416 reg = sio_data->sio_inb(sio_data, SIO_REG_ENABLE);
417 if (reg != data->sio_reg_enable)
418 sio_data->sio_outb(sio_data, SIO_REG_ENABLE, data->sio_reg_enable);
419
420 if (data->kind == nct6791 || data->kind == nct6792 ||
421 data->kind == nct6793 || data->kind == nct6795 ||
422 data->kind == nct6796 || data->kind == nct6797 ||
423 data->kind == nct6798 || data->kind == nct6799)
424 nct6791_enable_io_mapping(sio_data);
425
426 sio_data->sio_exit(sio_data);
427
428 /* Restore limits */
429 for (i = 0; i < data->in_num; i++) {
430 if (!(data->have_in & BIT(i)))
431 continue;
432
433 err = nct6775_write_value(data, data->REG_IN_MINMAX[0][i], data->in[i][1]);
434 if (err)
435 goto abort;
436 err = nct6775_write_value(data, data->REG_IN_MINMAX[1][i], data->in[i][2]);
437 if (err)
438 goto abort;
439 }
440
441 for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) {
442 if (!(data->has_fan_min & BIT(i)))
443 continue;
444
445 err = nct6775_write_value(data, data->REG_FAN_MIN[i], data->fan_min[i]);
446 if (err)
447 goto abort;
448 }
449
450 for (i = 0; i < NUM_TEMP; i++) {
451 if (!(data->have_temp & BIT(i)))
452 continue;
453
454 for (j = 1; j < ARRAY_SIZE(data->reg_temp); j++)
455 if (data->reg_temp[j][i]) {
456 err = nct6775_write_temp(data, data->reg_temp[j][i],
457 data->temp[j][i]);
458 if (err)
459 goto abort;
460 }
461 }
462
463 /* Restore other settings */
464 err = nct6775_write_value(data, data->REG_VBAT, data->vbat);
465 if (err)
466 goto abort;
467 if (data->kind == nct6775) {
468 err = nct6775_write_value(data, NCT6775_REG_FANDIV1, data->fandiv1);
469 if (err)
470 goto abort;
471 err = nct6775_write_value(data, NCT6775_REG_FANDIV2, data->fandiv2);
472 }
473
474abort:
475 /* Force re-reading all values */
476 data->valid = false;
477 mutex_unlock(&data->update_lock);
478
479 return err;
480}
481
482static DEFINE_SIMPLE_DEV_PM_OPS(nct6775_dev_pm_ops, nct6775_suspend, nct6775_resume);
483
484static void
485nct6775_check_fan_inputs(struct nct6775_data *data, struct nct6775_sio_data *sio_data)
486{
487 bool fan3pin = false, fan4pin = false, fan4min = false;
488 bool fan5pin = false, fan6pin = false, fan7pin = false;
489 bool pwm3pin = false, pwm4pin = false, pwm5pin = false;
490 bool pwm6pin = false, pwm7pin = false;
491
492 /* Store SIO_REG_ENABLE for use during resume */
493 sio_data->sio_select(sio_data, NCT6775_LD_HWM);
494 data->sio_reg_enable = sio_data->sio_inb(sio_data, SIO_REG_ENABLE);
495
496 /* fan4 and fan5 share some pins with the GPIO and serial flash */
497 if (data->kind == nct6775) {
498 int cr2c = sio_data->sio_inb(sio_data, 0x2c);
499
500 fan3pin = cr2c & BIT(6);
501 pwm3pin = cr2c & BIT(7);
502
503 /* On NCT6775, fan4 shares pins with the fdc interface */
504 fan4pin = !(sio_data->sio_inb(sio_data, 0x2A) & 0x80);
505 } else if (data->kind == nct6776) {
506 bool gpok = sio_data->sio_inb(sio_data, 0x27) & 0x80;
507 const char *board_vendor, *board_name;
508
509 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
510 board_name = dmi_get_system_info(DMI_BOARD_NAME);
511
512 if (board_name && board_vendor &&
513 !strcmp(board_vendor, "ASRock")) {
514 /*
515 * Auxiliary fan monitoring is not enabled on ASRock
516 * Z77 Pro4-M if booted in UEFI Ultra-FastBoot mode.
517 * Observed with BIOS version 2.00.
518 */
519 if (!strcmp(board_name, "Z77 Pro4-M")) {
520 if ((data->sio_reg_enable & 0xe0) != 0xe0) {
521 data->sio_reg_enable |= 0xe0;
522 sio_data->sio_outb(sio_data, SIO_REG_ENABLE,
523 data->sio_reg_enable);
524 }
525 }
526 }
527
528 if (data->sio_reg_enable & 0x80)
529 fan3pin = gpok;
530 else
531 fan3pin = !(sio_data->sio_inb(sio_data, 0x24) & 0x40);
532
533 if (data->sio_reg_enable & 0x40)
534 fan4pin = gpok;
535 else
536 fan4pin = sio_data->sio_inb(sio_data, 0x1C) & 0x01;
537
538 if (data->sio_reg_enable & 0x20)
539 fan5pin = gpok;
540 else
541 fan5pin = sio_data->sio_inb(sio_data, 0x1C) & 0x02;
542
543 fan4min = fan4pin;
544 pwm3pin = fan3pin;
545 } else if (data->kind == nct6106) {
546 int cr24 = sio_data->sio_inb(sio_data, 0x24);
547
548 fan3pin = !(cr24 & 0x80);
549 pwm3pin = cr24 & 0x08;
550 } else if (data->kind == nct6116) {
551 int cr1a = sio_data->sio_inb(sio_data, 0x1a);
552 int cr1b = sio_data->sio_inb(sio_data, 0x1b);
553 int cr24 = sio_data->sio_inb(sio_data, 0x24);
554 int cr2a = sio_data->sio_inb(sio_data, 0x2a);
555 int cr2b = sio_data->sio_inb(sio_data, 0x2b);
556 int cr2f = sio_data->sio_inb(sio_data, 0x2f);
557
558 fan3pin = !(cr2b & 0x10);
559 fan4pin = (cr2b & 0x80) || // pin 1(2)
560 (!(cr2f & 0x10) && (cr1a & 0x04)); // pin 65(66)
561 fan5pin = (cr2b & 0x80) || // pin 126(127)
562 (!(cr1b & 0x03) && (cr2a & 0x02)); // pin 94(96)
563
564 pwm3pin = fan3pin && (cr24 & 0x08);
565 pwm4pin = fan4pin;
566 pwm5pin = fan5pin;
567 } else {
568 /*
569 * NCT6779D, NCT6791D, NCT6792D, NCT6793D, NCT6795D, NCT6796D,
570 * NCT6797D, NCT6798D, NCT6799D
571 */
572 int cr1a = sio_data->sio_inb(sio_data, 0x1a);
573 int cr1b = sio_data->sio_inb(sio_data, 0x1b);
574 int cr1c = sio_data->sio_inb(sio_data, 0x1c);
575 int cr1d = sio_data->sio_inb(sio_data, 0x1d);
576 int cr2a = sio_data->sio_inb(sio_data, 0x2a);
577 int cr2b = sio_data->sio_inb(sio_data, 0x2b);
578 int cr2d = sio_data->sio_inb(sio_data, 0x2d);
579 int cr2f = sio_data->sio_inb(sio_data, 0x2f);
580 bool vsb_ctl_en = cr2f & BIT(0);
581 bool dsw_en = cr2f & BIT(3);
582 bool ddr4_en = cr2f & BIT(4);
583 bool as_seq1_en = cr2f & BIT(7);
584 int cre0;
585 int cre6;
586 int creb;
587 int cred;
588
589 cre6 = sio_data->sio_inb(sio_data, 0xe6);
590
591 sio_data->sio_select(sio_data, NCT6775_LD_12);
592 cre0 = sio_data->sio_inb(sio_data, 0xe0);
593 creb = sio_data->sio_inb(sio_data, 0xeb);
594 cred = sio_data->sio_inb(sio_data, 0xed);
595
596 fan3pin = !(cr1c & BIT(5));
597 fan4pin = !(cr1c & BIT(6));
598 fan5pin = !(cr1c & BIT(7));
599
600 pwm3pin = !(cr1c & BIT(0));
601 pwm4pin = !(cr1c & BIT(1));
602 pwm5pin = !(cr1c & BIT(2));
603
604 switch (data->kind) {
605 case nct6791:
606 fan6pin = cr2d & BIT(1);
607 pwm6pin = cr2d & BIT(0);
608 break;
609 case nct6792:
610 fan6pin = !dsw_en && (cr2d & BIT(1));
611 pwm6pin = !dsw_en && (cr2d & BIT(0));
612 break;
613 case nct6793:
614 fan5pin |= cr1b & BIT(5);
615 fan5pin |= creb & BIT(5);
616
617 fan6pin = !dsw_en && (cr2d & BIT(1));
618 fan6pin |= creb & BIT(3);
619
620 pwm5pin |= cr2d & BIT(7);
621 pwm5pin |= (creb & BIT(4)) && !(cr2a & BIT(0));
622
623 pwm6pin = !dsw_en && (cr2d & BIT(0));
624 pwm6pin |= creb & BIT(2);
625 break;
626 case nct6795:
627 fan5pin |= cr1b & BIT(5);
628 fan5pin |= creb & BIT(5);
629
630 fan6pin = (cr2a & BIT(4)) &&
631 (!dsw_en || (cred & BIT(4)));
632 fan6pin |= creb & BIT(3);
633
634 pwm5pin |= cr2d & BIT(7);
635 pwm5pin |= (creb & BIT(4)) && !(cr2a & BIT(0));
636
637 pwm6pin = (cr2a & BIT(3)) && (cred & BIT(2));
638 pwm6pin |= creb & BIT(2);
639 break;
640 case nct6796:
641 fan5pin |= cr1b & BIT(5);
642 fan5pin |= (cre0 & BIT(3)) && !(cr1b & BIT(0));
643 fan5pin |= creb & BIT(5);
644
645 fan6pin = (cr2a & BIT(4)) &&
646 (!dsw_en || (cred & BIT(4)));
647 fan6pin |= creb & BIT(3);
648
649 fan7pin = !(cr2b & BIT(2));
650
651 pwm5pin |= cr2d & BIT(7);
652 pwm5pin |= (cre0 & BIT(4)) && !(cr1b & BIT(0));
653 pwm5pin |= (creb & BIT(4)) && !(cr2a & BIT(0));
654
655 pwm6pin = (cr2a & BIT(3)) && (cred & BIT(2));
656 pwm6pin |= creb & BIT(2);
657
658 pwm7pin = !(cr1d & (BIT(2) | BIT(3)));
659 break;
660 case nct6797:
661 fan5pin |= !ddr4_en && (cr1b & BIT(5));
662 fan5pin |= creb & BIT(5);
663
664 fan6pin = cr2a & BIT(4);
665 fan6pin |= creb & BIT(3);
666
667 fan7pin = cr1a & BIT(1);
668
669 pwm5pin |= (creb & BIT(4)) && !(cr2a & BIT(0));
670 pwm5pin |= !ddr4_en && (cr2d & BIT(7));
671
672 pwm6pin = creb & BIT(2);
673 pwm6pin |= cred & BIT(2);
674
675 pwm7pin = cr1d & BIT(4);
676 break;
677 case nct6798:
678 fan6pin = !(cr1b & BIT(0)) && (cre0 & BIT(3));
679 fan6pin |= cr2a & BIT(4);
680 fan6pin |= creb & BIT(5);
681
682 fan7pin = cr1b & BIT(5);
683 fan7pin |= !(cr2b & BIT(2));
684 fan7pin |= creb & BIT(3);
685
686 pwm6pin = !(cr1b & BIT(0)) && (cre0 & BIT(4));
687 pwm6pin |= !(cred & BIT(2)) && (cr2a & BIT(3));
688 pwm6pin |= (creb & BIT(4)) && !(cr2a & BIT(0));
689
690 pwm7pin = !(cr1d & (BIT(2) | BIT(3)));
691 pwm7pin |= cr2d & BIT(7);
692 pwm7pin |= creb & BIT(2);
693 break;
694 case nct6799:
695 fan4pin = cr1c & BIT(6);
696 fan5pin = cr1c & BIT(7);
697
698 fan6pin = !(cr1b & BIT(0)) && (cre0 & BIT(3));
699 fan6pin |= cre6 & BIT(5);
700 fan6pin |= creb & BIT(5);
701 fan6pin |= !as_seq1_en && (cr2a & BIT(4));
702
703 fan7pin = cr1b & BIT(5);
704 fan7pin |= !vsb_ctl_en && !(cr2b & BIT(2));
705 fan7pin |= creb & BIT(3);
706
707 pwm6pin = !(cr1b & BIT(0)) && (cre0 & BIT(4));
708 pwm6pin |= !as_seq1_en && !(cred & BIT(2)) && (cr2a & BIT(3));
709 pwm6pin |= (creb & BIT(4)) && !(cr2a & BIT(0));
710 pwm6pin |= cre6 & BIT(3);
711
712 pwm7pin = !vsb_ctl_en && !(cr1d & (BIT(2) | BIT(3)));
713 pwm7pin |= creb & BIT(2);
714 pwm7pin |= cr2d & BIT(7);
715
716 break;
717 default: /* NCT6779D */
718 break;
719 }
720
721 fan4min = fan4pin;
722 }
723
724 /* fan 1 and 2 (0x03) are always present */
725 data->has_fan = 0x03 | (fan3pin << 2) | (fan4pin << 3) |
726 (fan5pin << 4) | (fan6pin << 5) | (fan7pin << 6);
727 data->has_fan_min = 0x03 | (fan3pin << 2) | (fan4min << 3) |
728 (fan5pin << 4) | (fan6pin << 5) | (fan7pin << 6);
729 data->has_pwm = 0x03 | (pwm3pin << 2) | (pwm4pin << 3) |
730 (pwm5pin << 4) | (pwm6pin << 5) | (pwm7pin << 6);
731}
732
733static ssize_t
734cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf)
735{
736 struct nct6775_data *data = dev_get_drvdata(dev);
737
738 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
739}
740
741static DEVICE_ATTR_RO(cpu0_vid);
742
743/* Case open detection */
744
745static const u8 NCT6775_REG_CR_CASEOPEN_CLR[] = { 0xe6, 0xee };
746static const u8 NCT6775_CR_CASEOPEN_CLR_MASK[] = { 0x20, 0x01 };
747
748static ssize_t
749clear_caseopen(struct device *dev, struct device_attribute *attr,
750 const char *buf, size_t count)
751{
752 struct nct6775_data *data = dev_get_drvdata(dev);
753 struct nct6775_sio_data *sio_data = data->driver_data;
754 int nr = to_sensor_dev_attr(attr)->index - INTRUSION_ALARM_BASE;
755 unsigned long val;
756 u8 reg;
757 int ret;
758
759 if (kstrtoul(buf, 10, &val) || val != 0)
760 return -EINVAL;
761
762 mutex_lock(&data->update_lock);
763
764 /*
765 * Use CR registers to clear caseopen status.
766 * The CR registers are the same for all chips, and not all chips
767 * support clearing the caseopen status through "regular" registers.
768 */
769 ret = sio_data->sio_enter(sio_data);
770 if (ret) {
771 count = ret;
772 goto error;
773 }
774
775 sio_data->sio_select(sio_data, NCT6775_LD_ACPI);
776 reg = sio_data->sio_inb(sio_data, NCT6775_REG_CR_CASEOPEN_CLR[nr]);
777 reg |= NCT6775_CR_CASEOPEN_CLR_MASK[nr];
778 sio_data->sio_outb(sio_data, NCT6775_REG_CR_CASEOPEN_CLR[nr], reg);
779 reg &= ~NCT6775_CR_CASEOPEN_CLR_MASK[nr];
780 sio_data->sio_outb(sio_data, NCT6775_REG_CR_CASEOPEN_CLR[nr], reg);
781 sio_data->sio_exit(sio_data);
782
783 data->valid = false; /* Force cache refresh */
784error:
785 mutex_unlock(&data->update_lock);
786 return count;
787}
788
789static SENSOR_DEVICE_ATTR(intrusion0_alarm, 0644, nct6775_show_alarm,
790 clear_caseopen, INTRUSION_ALARM_BASE);
791static SENSOR_DEVICE_ATTR(intrusion1_alarm, 0644, nct6775_show_alarm,
792 clear_caseopen, INTRUSION_ALARM_BASE + 1);
793static SENSOR_DEVICE_ATTR(intrusion0_beep, 0644, nct6775_show_beep,
794 nct6775_store_beep, INTRUSION_ALARM_BASE);
795static SENSOR_DEVICE_ATTR(intrusion1_beep, 0644, nct6775_show_beep,
796 nct6775_store_beep, INTRUSION_ALARM_BASE + 1);
797static SENSOR_DEVICE_ATTR(beep_enable, 0644, nct6775_show_beep,
798 nct6775_store_beep, BEEP_ENABLE_BASE);
799
800static umode_t nct6775_other_is_visible(struct kobject *kobj,
801 struct attribute *attr, int index)
802{
803 struct device *dev = kobj_to_dev(kobj);
804 struct nct6775_data *data = dev_get_drvdata(dev);
805
806 if (index == 0 && !data->have_vid)
807 return 0;
808
809 if (index == 1 || index == 2) {
810 if (data->ALARM_BITS[INTRUSION_ALARM_BASE + index - 1] < 0)
811 return 0;
812 }
813
814 if (index == 3 || index == 4) {
815 if (data->BEEP_BITS[INTRUSION_ALARM_BASE + index - 3] < 0)
816 return 0;
817 }
818
819 return nct6775_attr_mode(data, attr);
820}
821
822/*
823 * nct6775_other_is_visible uses the index into the following array
824 * to determine if attributes should be created or not.
825 * Any change in order or content must be matched.
826 */
827static struct attribute *nct6775_attributes_other[] = {
828 &dev_attr_cpu0_vid.attr, /* 0 */
829 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr, /* 1 */
830 &sensor_dev_attr_intrusion1_alarm.dev_attr.attr, /* 2 */
831 &sensor_dev_attr_intrusion0_beep.dev_attr.attr, /* 3 */
832 &sensor_dev_attr_intrusion1_beep.dev_attr.attr, /* 4 */
833 &sensor_dev_attr_beep_enable.dev_attr.attr, /* 5 */
834
835 NULL
836};
837
838static const struct attribute_group nct6775_group_other = {
839 .attrs = nct6775_attributes_other,
840 .is_visible = nct6775_other_is_visible,
841};
842
843static int nct6775_platform_probe_init(struct nct6775_data *data)
844{
845 int err;
846 u8 cr2a;
847 struct nct6775_sio_data *sio_data = data->driver_data;
848
849 err = sio_data->sio_enter(sio_data);
850 if (err)
851 return err;
852
853 cr2a = sio_data->sio_inb(sio_data, 0x2a);
854 switch (data->kind) {
855 case nct6775:
856 data->have_vid = (cr2a & 0x40);
857 break;
858 case nct6776:
859 data->have_vid = (cr2a & 0x60) == 0x40;
860 break;
861 case nct6106:
862 case nct6116:
863 case nct6779:
864 case nct6791:
865 case nct6792:
866 case nct6793:
867 case nct6795:
868 case nct6796:
869 case nct6797:
870 case nct6798:
871 case nct6799:
872 break;
873 }
874
875 /*
876 * Read VID value
877 * We can get the VID input values directly at logical device D 0xe3.
878 */
879 if (data->have_vid) {
880 sio_data->sio_select(sio_data, NCT6775_LD_VID);
881 data->vid = sio_data->sio_inb(sio_data, 0xe3);
882 data->vrm = vid_which_vrm();
883 }
884
885 if (fan_debounce) {
886 u8 tmp;
887
888 sio_data->sio_select(sio_data, NCT6775_LD_HWM);
889 tmp = sio_data->sio_inb(sio_data,
890 NCT6775_REG_CR_FAN_DEBOUNCE);
891 switch (data->kind) {
892 case nct6106:
893 case nct6116:
894 tmp |= 0xe0;
895 break;
896 case nct6775:
897 tmp |= 0x1e;
898 break;
899 case nct6776:
900 case nct6779:
901 tmp |= 0x3e;
902 break;
903 case nct6791:
904 case nct6792:
905 case nct6793:
906 case nct6795:
907 case nct6796:
908 case nct6797:
909 case nct6798:
910 case nct6799:
911 tmp |= 0x7e;
912 break;
913 }
914 sio_data->sio_outb(sio_data, NCT6775_REG_CR_FAN_DEBOUNCE,
915 tmp);
916 pr_info("Enabled fan debounce for chip %s\n", data->name);
917 }
918
919 nct6775_check_fan_inputs(data, sio_data);
920
921 sio_data->sio_exit(sio_data);
922
923 return nct6775_add_attr_group(data, &nct6775_group_other);
924}
925
926static const struct regmap_config nct6775_regmap_config = {
927 .reg_bits = 16,
928 .val_bits = 16,
929 .reg_read = nct6775_reg_read,
930 .reg_write = nct6775_reg_write,
931};
932
933static const struct regmap_config nct6775_wmi_regmap_config = {
934 .reg_bits = 16,
935 .val_bits = 16,
936 .reg_read = nct6775_wmi_reg_read,
937 .reg_write = nct6775_wmi_reg_write,
938};
939
940static int nct6775_platform_probe(struct platform_device *pdev)
941{
942 struct device *dev = &pdev->dev;
943 struct nct6775_sio_data *sio_data = dev_get_platdata(dev);
944 struct nct6775_data *data;
945 struct resource *res;
946 const struct regmap_config *regmapcfg;
947
948 if (sio_data->access == access_direct) {
949 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
950 if (!devm_request_region(&pdev->dev, res->start, IOREGION_LENGTH, DRVNAME))
951 return -EBUSY;
952 }
953
954 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
955 if (!data)
956 return -ENOMEM;
957
958 data->kind = sio_data->kind;
959 data->sioreg = sio_data->sioreg;
960
961 if (sio_data->access == access_direct) {
962 data->addr = res->start;
963 regmapcfg = &nct6775_regmap_config;
964 } else {
965 regmapcfg = &nct6775_wmi_regmap_config;
966 }
967
968 platform_set_drvdata(pdev, data);
969
970 data->driver_data = sio_data;
971 data->driver_init = nct6775_platform_probe_init;
972
973 return nct6775_probe(&pdev->dev, data, regmapcfg);
974}
975
976static struct platform_driver nct6775_driver = {
977 .driver = {
978 .name = DRVNAME,
979 .pm = pm_sleep_ptr(&nct6775_dev_pm_ops),
980 },
981 .probe = nct6775_platform_probe,
982};
983
984/* nct6775_find() looks for a '627 in the Super-I/O config space */
985static int __init nct6775_find(int sioaddr, struct nct6775_sio_data *sio_data)
986{
987 u16 val;
988 int err;
989 int addr;
990
991 sio_data->access = access_direct;
992 sio_data->sioreg = sioaddr;
993
994 err = sio_data->sio_enter(sio_data);
995 if (err)
996 return err;
997
998 val = (sio_data->sio_inb(sio_data, SIO_REG_DEVID) << 8) |
999 sio_data->sio_inb(sio_data, SIO_REG_DEVID + 1);
1000 if (force_id && val != 0xffff)
1001 val = force_id;
1002
1003 switch (val & SIO_ID_MASK) {
1004 case SIO_NCT6106_ID:
1005 sio_data->kind = nct6106;
1006 break;
1007 case SIO_NCT6116_ID:
1008 sio_data->kind = nct6116;
1009 break;
1010 case SIO_NCT6775_ID:
1011 sio_data->kind = nct6775;
1012 break;
1013 case SIO_NCT6776_ID:
1014 sio_data->kind = nct6776;
1015 break;
1016 case SIO_NCT6779_ID:
1017 sio_data->kind = nct6779;
1018 break;
1019 case SIO_NCT6791_ID:
1020 sio_data->kind = nct6791;
1021 break;
1022 case SIO_NCT6792_ID:
1023 sio_data->kind = nct6792;
1024 break;
1025 case SIO_NCT6793_ID:
1026 sio_data->kind = nct6793;
1027 break;
1028 case SIO_NCT6795_ID:
1029 sio_data->kind = nct6795;
1030 break;
1031 case SIO_NCT6796_ID:
1032 sio_data->kind = nct6796;
1033 break;
1034 case SIO_NCT6797_ID:
1035 sio_data->kind = nct6797;
1036 break;
1037 case SIO_NCT6798_ID:
1038 sio_data->kind = nct6798;
1039 break;
1040 case SIO_NCT6799_ID:
1041 sio_data->kind = nct6799;
1042 break;
1043 default:
1044 if (val != 0xffff)
1045 pr_debug("unsupported chip ID: 0x%04x\n", val);
1046 sio_data->sio_exit(sio_data);
1047 return -ENODEV;
1048 }
1049
1050 /* We have a known chip, find the HWM I/O address */
1051 sio_data->sio_select(sio_data, NCT6775_LD_HWM);
1052 val = (sio_data->sio_inb(sio_data, SIO_REG_ADDR) << 8)
1053 | sio_data->sio_inb(sio_data, SIO_REG_ADDR + 1);
1054 addr = val & IOREGION_ALIGNMENT;
1055 if (addr == 0) {
1056 pr_err("Refusing to enable a Super-I/O device with a base I/O port 0\n");
1057 sio_data->sio_exit(sio_data);
1058 return -ENODEV;
1059 }
1060
1061 /* Activate logical device if needed */
1062 val = sio_data->sio_inb(sio_data, SIO_REG_ENABLE);
1063 if (!(val & 0x01)) {
1064 pr_warn("Forcibly enabling Super-I/O. Sensor is probably unusable.\n");
1065 sio_data->sio_outb(sio_data, SIO_REG_ENABLE, val | 0x01);
1066 }
1067
1068 if (sio_data->kind == nct6791 || sio_data->kind == nct6792 ||
1069 sio_data->kind == nct6793 || sio_data->kind == nct6795 ||
1070 sio_data->kind == nct6796 || sio_data->kind == nct6797 ||
1071 sio_data->kind == nct6798 || sio_data->kind == nct6799)
1072 nct6791_enable_io_mapping(sio_data);
1073
1074 sio_data->sio_exit(sio_data);
1075 pr_info("Found %s or compatible chip at %#x:%#x\n",
1076 nct6775_sio_names[sio_data->kind], sioaddr, addr);
1077
1078 return addr;
1079}
1080
1081/*
1082 * when Super-I/O functions move to a separate file, the Super-I/O
1083 * bus will manage the lifetime of the device and this module will only keep
1084 * track of the nct6775 driver. But since we use platform_device_alloc(), we
1085 * must keep track of the device
1086 */
1087static struct platform_device *pdev[2];
1088
1089static const char * const asus_wmi_boards[] = {
1090 "B360M-BASALT",
1091 "B360M-D3H",
1092 "EX-B360M-V",
1093 "EX-B360M-V3",
1094 "EX-B360M-V5",
1095 "EX-B460M-V5",
1096 "EX-H410M-V3",
1097 "PRIME A520M-A",
1098 "PRIME A520M-A II",
1099 "PRIME A520M-E",
1100 "PRIME A520M-K",
1101 "PRIME B360-PLUS",
1102 "PRIME B360M-A",
1103 "PRIME B360M-C",
1104 "PRIME B360M-D",
1105 "PRIME B360M-K",
1106 "PRIME B460-PLUS",
1107 "PRIME B460I-PLUS",
1108 "PRIME B460M-A",
1109 "PRIME B460M-A R2.0",
1110 "PRIME B460M-K",
1111 "PRIME B550-PLUS",
1112 "PRIME B550-PLUS AC-HES",
1113 "PRIME B550M-A",
1114 "PRIME B550M-A (WI-FI)",
1115 "PRIME B550M-A AC",
1116 "PRIME B550M-A WIFI II",
1117 "PRIME B550M-K",
1118 "PRIME H310-PLUS",
1119 "PRIME H310I-PLUS",
1120 "PRIME H310M-A",
1121 "PRIME H310M-C",
1122 "PRIME H310M-D",
1123 "PRIME H310M-DASH",
1124 "PRIME H310M-E",
1125 "PRIME H310M-E/BR",
1126 "PRIME H310M-F",
1127 "PRIME H310M-K",
1128 "PRIME H310T",
1129 "PRIME H370-A",
1130 "PRIME H370-PLUS",
1131 "PRIME H370M-PLUS",
1132 "PRIME H410I-PLUS",
1133 "PRIME H410M-A",
1134 "PRIME H410M-D",
1135 "PRIME H410M-E",
1136 "PRIME H410M-F",
1137 "PRIME H410M-K",
1138 "PRIME H410M-K R2.0",
1139 "PRIME H410M-R",
1140 "PRIME H470-PLUS",
1141 "PRIME H470M-PLUS",
1142 "PRIME H510M-K R2.0",
1143 "PRIME Q370M-C",
1144 "PRIME X570-P",
1145 "PRIME X570-PRO",
1146 "PRIME Z390-A",
1147 "PRIME Z390-A/H10",
1148 "PRIME Z390-P",
1149 "PRIME Z390M-PLUS",
1150 "PRIME Z490-A",
1151 "PRIME Z490-P",
1152 "PRIME Z490-V",
1153 "PRIME Z490M-PLUS",
1154 "PRO B460M-C",
1155 "PRO H410M-C",
1156 "PRO H410T",
1157 "PRO Q470M-C",
1158 "Pro A520M-C",
1159 "Pro A520M-C II",
1160 "Pro B550M-C",
1161 "Pro WS X570-ACE",
1162 "ProArt B550-CREATOR",
1163 "ProArt X570-CREATOR WIFI",
1164 "ProArt Z490-CREATOR 10G",
1165 "ROG CROSSHAIR VIII DARK HERO",
1166 "ROG CROSSHAIR VIII EXTREME",
1167 "ROG CROSSHAIR VIII FORMULA",
1168 "ROG CROSSHAIR VIII HERO",
1169 "ROG CROSSHAIR VIII HERO (WI-FI)",
1170 "ROG CROSSHAIR VIII IMPACT",
1171 "ROG MAXIMUS XI APEX",
1172 "ROG MAXIMUS XI CODE",
1173 "ROG MAXIMUS XI EXTREME",
1174 "ROG MAXIMUS XI FORMULA",
1175 "ROG MAXIMUS XI GENE",
1176 "ROG MAXIMUS XI HERO",
1177 "ROG MAXIMUS XI HERO (WI-FI)",
1178 "ROG MAXIMUS XII APEX",
1179 "ROG MAXIMUS XII EXTREME",
1180 "ROG MAXIMUS XII FORMULA",
1181 "ROG MAXIMUS XII HERO (WI-FI)",
1182 "ROG STRIX B360-F GAMING",
1183 "ROG STRIX B360-G GAMING",
1184 "ROG STRIX B360-H GAMING",
1185 "ROG STRIX B360-H GAMING/OPTANE",
1186 "ROG STRIX B360-I GAMING",
1187 "ROG STRIX B460-F GAMING",
1188 "ROG STRIX B460-G GAMING",
1189 "ROG STRIX B460-H GAMING",
1190 "ROG STRIX B460-I GAMING",
1191 "ROG STRIX B550-A GAMING",
1192 "ROG STRIX B550-E GAMING",
1193 "ROG STRIX B550-F GAMING",
1194 "ROG STRIX B550-F GAMING (WI-FI)",
1195 "ROG STRIX B550-F GAMING WIFI II",
1196 "ROG STRIX B550-I GAMING",
1197 "ROG STRIX B550-XE GAMING WIFI",
1198 "ROG STRIX H370-F GAMING",
1199 "ROG STRIX H370-I GAMING",
1200 "ROG STRIX H470-I GAMING",
1201 "ROG STRIX X570-E GAMING",
1202 "ROG STRIX X570-E GAMING WIFI II",
1203 "ROG STRIX X570-F GAMING",
1204 "ROG STRIX X570-I GAMING",
1205 "ROG STRIX Z390-E GAMING",
1206 "ROG STRIX Z390-F GAMING",
1207 "ROG STRIX Z390-H GAMING",
1208 "ROG STRIX Z390-I GAMING",
1209 "ROG STRIX Z490-A GAMING",
1210 "ROG STRIX Z490-E GAMING",
1211 "ROG STRIX Z490-F GAMING",
1212 "ROG STRIX Z490-G GAMING",
1213 "ROG STRIX Z490-G GAMING (WI-FI)",
1214 "ROG STRIX Z490-H GAMING",
1215 "ROG STRIX Z490-I GAMING",
1216 "TUF B360-PLUS GAMING",
1217 "TUF B360-PRO GAMING",
1218 "TUF B360-PRO GAMING (WI-FI)",
1219 "TUF B360M-E GAMING",
1220 "TUF B360M-PLUS GAMING",
1221 "TUF B360M-PLUS GAMING S",
1222 "TUF B360M-PLUS GAMING/BR",
1223 "TUF GAMING A520M-PLUS",
1224 "TUF GAMING A520M-PLUS II",
1225 "TUF GAMING A520M-PLUS WIFI",
1226 "TUF GAMING B460-PLUS",
1227 "TUF GAMING B460-PRO (WI-FI)",
1228 "TUF GAMING B460M-PLUS",
1229 "TUF GAMING B460M-PLUS (WI-FI)",
1230 "TUF GAMING B460M-PRO",
1231 "TUF GAMING B550-PLUS",
1232 "TUF GAMING B550-PLUS (WI-FI)",
1233 "TUF GAMING B550-PLUS WIFI II",
1234 "TUF GAMING B550-PRO",
1235 "TUF GAMING B550M ZAKU (WI-FI)",
1236 "TUF GAMING B550M-E",
1237 "TUF GAMING B550M-E WIFI",
1238 "TUF GAMING B550M-PLUS",
1239 "TUF GAMING B550M-PLUS (WI-FI)",
1240 "TUF GAMING B550M-PLUS WIFI II",
1241 "TUF GAMING H470-PRO",
1242 "TUF GAMING H470-PRO (WI-FI)",
1243 "TUF GAMING X570-PLUS",
1244 "TUF GAMING X570-PLUS (WI-FI)",
1245 "TUF GAMING X570-PLUS_BR",
1246 "TUF GAMING X570-PRO (WI-FI)",
1247 "TUF GAMING X570-PRO WIFI II",
1248 "TUF GAMING Z490-PLUS",
1249 "TUF GAMING Z490-PLUS (WI-FI)",
1250 "TUF H310-PLUS GAMING",
1251 "TUF H310M-PLUS GAMING",
1252 "TUF H310M-PLUS GAMING/BR",
1253 "TUF H370-PRO GAMING",
1254 "TUF H370-PRO GAMING (WI-FI)",
1255 "TUF Z390-PLUS GAMING",
1256 "TUF Z390-PLUS GAMING (WI-FI)",
1257 "TUF Z390-PRO GAMING",
1258 "TUF Z390M-PRO GAMING",
1259 "TUF Z390M-PRO GAMING (WI-FI)",
1260 "WS Z390 PRO",
1261 "Z490-GUNDAM (WI-FI)",
1262};
1263
1264static const char * const asus_msi_boards[] = {
1265 "B560M-P",
1266 "EX-B560M-V5",
1267 "EX-B660M-V5 D4",
1268 "EX-B660M-V5 PRO D4",
1269 "EX-B760M-V5 D4",
1270 "EX-H510M-V3",
1271 "EX-H610M-V3 D4",
1272 "PRIME A620M-A",
1273 "PRIME B560-PLUS",
1274 "PRIME B560-PLUS AC-HES",
1275 "PRIME B560M-A",
1276 "PRIME B560M-A AC",
1277 "PRIME B560M-K",
1278 "PRIME B650-PLUS",
1279 "PRIME B650M-A",
1280 "PRIME B650M-A AX",
1281 "PRIME B650M-A AX II",
1282 "PRIME B650M-A II",
1283 "PRIME B650M-A WIFI",
1284 "PRIME B650M-A WIFI II",
1285 "PRIME B660-PLUS D4",
1286 "PRIME B660M-A AC D4",
1287 "PRIME B660M-A D4",
1288 "PRIME B660M-A WIFI D4",
1289 "PRIME B760-PLUS",
1290 "PRIME B760-PLUS D4",
1291 "PRIME B760M-A",
1292 "PRIME B760M-A AX D4",
1293 "PRIME B760M-A D4",
1294 "PRIME B760M-A WIFI",
1295 "PRIME B760M-A WIFI D4",
1296 "PRIME B760M-AJ D4",
1297 "PRIME B760M-K D4",
1298 "PRIME H510M-A",
1299 "PRIME H510M-A WIFI",
1300 "PRIME H510M-D",
1301 "PRIME H510M-E",
1302 "PRIME H510M-F",
1303 "PRIME H510M-K",
1304 "PRIME H510M-R",
1305 "PRIME H510T2/CSM",
1306 "PRIME H570-PLUS",
1307 "PRIME H570M-PLUS",
1308 "PRIME H610I-PLUS D4",
1309 "PRIME H610M-A D4",
1310 "PRIME H610M-A WIFI D4",
1311 "PRIME H610M-D D4",
1312 "PRIME H610M-E D4",
1313 "PRIME H610M-F D4",
1314 "PRIME H610M-K D4",
1315 "PRIME H610M-R D4",
1316 "PRIME H670-PLUS D4",
1317 "PRIME H770-PLUS D4",
1318 "PRIME X670-P",
1319 "PRIME X670-P WIFI",
1320 "PRIME X670E-PRO WIFI",
1321 "PRIME Z590-A",
1322 "PRIME Z590-P",
1323 "PRIME Z590-P WIFI",
1324 "PRIME Z590-V",
1325 "PRIME Z590M-PLUS",
1326 "PRIME Z690-A",
1327 "PRIME Z690-P",
1328 "PRIME Z690-P D4",
1329 "PRIME Z690-P WIFI",
1330 "PRIME Z690-P WIFI D4",
1331 "PRIME Z690M-PLUS D4",
1332 "PRIME Z790-A WIFI",
1333 "PRIME Z790-P",
1334 "PRIME Z790-P D4",
1335 "PRIME Z790-P WIFI",
1336 "PRIME Z790-P WIFI D4",
1337 "PRIME Z790M-PLUS",
1338 "PRIME Z790M-PLUS D4",
1339 "Pro B560M-C",
1340 "Pro B560M-CT",
1341 "Pro B660M-C",
1342 "Pro B660M-C D4",
1343 "Pro B760M-C",
1344 "Pro B760M-CT",
1345 "Pro H510M-C",
1346 "Pro H510M-CT",
1347 "Pro H610M-C",
1348 "Pro H610M-C D4",
1349 "Pro H610M-CT D4",
1350 "Pro H610T D4",
1351 "Pro Q670M-C",
1352 "Pro WS W680-ACE",
1353 "Pro WS W680-ACE IPMI",
1354 "Pro WS W790-ACE",
1355 "Pro WS W790E-SAGE SE",
1356 "ProArt B650-CREATOR",
1357 "ProArt B660-CREATOR D4",
1358 "ProArt B760-CREATOR D4",
1359 "ProArt X670E-CREATOR WIFI",
1360 "ProArt Z690-CREATOR WIFI",
1361 "ProArt Z790-CREATOR WIFI",
1362 "ROG CROSSHAIR X670E EXTREME",
1363 "ROG CROSSHAIR X670E GENE",
1364 "ROG CROSSHAIR X670E HERO",
1365 "ROG MAXIMUS XIII APEX",
1366 "ROG MAXIMUS XIII EXTREME",
1367 "ROG MAXIMUS XIII EXTREME GLACIAL",
1368 "ROG MAXIMUS XIII HERO",
1369 "ROG MAXIMUS Z690 APEX",
1370 "ROG MAXIMUS Z690 EXTREME",
1371 "ROG MAXIMUS Z690 EXTREME GLACIAL",
1372 "ROG MAXIMUS Z690 FORMULA",
1373 "ROG MAXIMUS Z690 HERO",
1374 "ROG MAXIMUS Z690 HERO EVA",
1375 "ROG MAXIMUS Z790 APEX",
1376 "ROG MAXIMUS Z790 EXTREME",
1377 "ROG MAXIMUS Z790 HERO",
1378 "ROG STRIX B560-A GAMING WIFI",
1379 "ROG STRIX B560-E GAMING WIFI",
1380 "ROG STRIX B560-F GAMING WIFI",
1381 "ROG STRIX B560-G GAMING WIFI",
1382 "ROG STRIX B560-I GAMING WIFI",
1383 "ROG STRIX B650-A GAMING WIFI",
1384 "ROG STRIX B650E-E GAMING WIFI",
1385 "ROG STRIX B650E-F GAMING WIFI",
1386 "ROG STRIX B650E-I GAMING WIFI",
1387 "ROG STRIX B660-A GAMING WIFI",
1388 "ROG STRIX B660-A GAMING WIFI D4",
1389 "ROG STRIX B660-F GAMING WIFI",
1390 "ROG STRIX B660-G GAMING WIFI",
1391 "ROG STRIX B660-I GAMING WIFI",
1392 "ROG STRIX B760-A GAMING WIFI",
1393 "ROG STRIX B760-A GAMING WIFI D4",
1394 "ROG STRIX B760-F GAMING WIFI",
1395 "ROG STRIX B760-G GAMING WIFI",
1396 "ROG STRIX B760-G GAMING WIFI D4",
1397 "ROG STRIX B760-I GAMING WIFI",
1398 "ROG STRIX X670E-A GAMING WIFI",
1399 "ROG STRIX X670E-E GAMING WIFI",
1400 "ROG STRIX X670E-F GAMING WIFI",
1401 "ROG STRIX X670E-I GAMING WIFI",
1402 "ROG STRIX Z590-A GAMING WIFI",
1403 "ROG STRIX Z590-A GAMING WIFI II",
1404 "ROG STRIX Z590-E GAMING WIFI",
1405 "ROG STRIX Z590-F GAMING WIFI",
1406 "ROG STRIX Z590-I GAMING WIFI",
1407 "ROG STRIX Z690-A GAMING WIFI",
1408 "ROG STRIX Z690-A GAMING WIFI D4",
1409 "ROG STRIX Z690-E GAMING WIFI",
1410 "ROG STRIX Z690-F GAMING WIFI",
1411 "ROG STRIX Z690-G GAMING WIFI",
1412 "ROG STRIX Z690-I GAMING WIFI",
1413 "ROG STRIX Z790-A GAMING WIFI",
1414 "ROG STRIX Z790-A GAMING WIFI D4",
1415 "ROG STRIX Z790-E GAMING WIFI",
1416 "ROG STRIX Z790-F GAMING WIFI",
1417 "ROG STRIX Z790-H GAMING WIFI",
1418 "ROG STRIX Z790-I GAMING WIFI",
1419 "TUF GAMING A620M-PLUS",
1420 "TUF GAMING A620M-PLUS WIFI",
1421 "TUF GAMING B560-PLUS WIFI",
1422 "TUF GAMING B560M-E",
1423 "TUF GAMING B560M-PLUS",
1424 "TUF GAMING B560M-PLUS WIFI",
1425 "TUF GAMING B650-PLUS",
1426 "TUF GAMING B650-PLUS WIFI",
1427 "TUF GAMING B650M-PLUS",
1428 "TUF GAMING B650M-PLUS WIFI",
1429 "TUF GAMING B660-PLUS WIFI D4",
1430 "TUF GAMING B660M-E D4",
1431 "TUF GAMING B660M-PLUS D4",
1432 "TUF GAMING B660M-PLUS WIFI",
1433 "TUF GAMING B660M-PLUS WIFI D4",
1434 "TUF GAMING B760-PLUS WIFI",
1435 "TUF GAMING B760-PLUS WIFI D4",
1436 "TUF GAMING B760M-BTF WIFI D4",
1437 "TUF GAMING B760M-E D4",
1438 "TUF GAMING B760M-PLUS",
1439 "TUF GAMING B760M-PLUS D4",
1440 "TUF GAMING B760M-PLUS WIFI",
1441 "TUF GAMING B760M-PLUS WIFI D4",
1442 "TUF GAMING H570-PRO",
1443 "TUF GAMING H570-PRO WIFI",
1444 "TUF GAMING H670-PRO WIFI D4",
1445 "TUF GAMING H770-PRO WIFI",
1446 "TUF GAMING X670E-PLUS",
1447 "TUF GAMING X670E-PLUS WIFI",
1448 "TUF GAMING Z590-PLUS",
1449 "TUF GAMING Z590-PLUS WIFI",
1450 "TUF GAMING Z690-PLUS",
1451 "TUF GAMING Z690-PLUS D4",
1452 "TUF GAMING Z690-PLUS WIFI",
1453 "TUF GAMING Z690-PLUS WIFI D4",
1454 "TUF GAMING Z790-PLUS D4",
1455 "TUF GAMING Z790-PLUS WIFI",
1456 "TUF GAMING Z790-PLUS WIFI D4",
1457 "Z590 WIFI GUNDAM EDITION",
1458};
1459
1460#if IS_ENABLED(CONFIG_ACPI)
1461/*
1462 * Callback for acpi_bus_for_each_dev() to find the right device
1463 * by _UID and _HID and return 1 to stop iteration.
1464 */
1465static int nct6775_asuswmi_device_match(struct device *dev, void *data)
1466{
1467 struct acpi_device *adev = to_acpi_device(dev);
1468
1469 if (acpi_dev_hid_uid_match(adev, ASUSWMI_DEVICE_HID, data)) {
1470 asus_acpi_dev = adev;
1471 return 1;
1472 }
1473
1474 return 0;
1475}
1476#endif
1477
1478static enum sensor_access nct6775_determine_access(const char *device_uid)
1479{
1480#if IS_ENABLED(CONFIG_ACPI)
1481 u8 tmp;
1482
1483 acpi_bus_for_each_dev(nct6775_asuswmi_device_match, (void *)device_uid);
1484 if (!asus_acpi_dev)
1485 return access_direct;
1486
1487 /* if reading chip id via ACPI succeeds, use WMI "WMBD" method for access */
1488 if (!nct6775_asuswmi_read(0, NCT6775_PORT_CHIPID, &tmp) && tmp) {
1489 pr_debug("Using Asus WMBD method of %s to access %#x chip.\n", device_uid, tmp);
1490 return access_asuswmi;
1491 }
1492#endif
1493
1494 return access_direct;
1495}
1496
1497static int __init sensors_nct6775_platform_init(void)
1498{
1499 int i, err;
1500 bool found = false;
1501 int address;
1502 struct resource res;
1503 struct nct6775_sio_data sio_data;
1504 int sioaddr[2] = { 0x2e, 0x4e };
1505 enum sensor_access access = access_direct;
1506 const char *board_vendor, *board_name;
1507
1508 err = platform_driver_register(&nct6775_driver);
1509 if (err)
1510 return err;
1511
1512 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1513 board_name = dmi_get_system_info(DMI_BOARD_NAME);
1514
1515 if (board_name && board_vendor &&
1516 !strcmp(board_vendor, "ASUSTeK COMPUTER INC.")) {
1517 err = match_string(asus_wmi_boards, ARRAY_SIZE(asus_wmi_boards),
1518 board_name);
1519 if (err >= 0)
1520 access = nct6775_determine_access(ASUSWMI_DEVICE_UID);
1521
1522 err = match_string(asus_msi_boards, ARRAY_SIZE(asus_msi_boards),
1523 board_name);
1524 if (err >= 0)
1525 access = nct6775_determine_access(ASUSMSI_DEVICE_UID);
1526 }
1527
1528 /*
1529 * initialize sio_data->kind and sio_data->sioreg.
1530 *
1531 * when Super-I/O functions move to a separate file, the Super-I/O
1532 * driver will probe 0x2e and 0x4e and auto-detect the presence of a
1533 * nct6775 hardware monitor, and call probe()
1534 */
1535 for (i = 0; i < ARRAY_SIZE(pdev); i++) {
1536 sio_data.sio_outb = superio_outb;
1537 sio_data.sio_inb = superio_inb;
1538 sio_data.sio_select = superio_select;
1539 sio_data.sio_enter = superio_enter;
1540 sio_data.sio_exit = superio_exit;
1541
1542 address = nct6775_find(sioaddr[i], &sio_data);
1543 if (address <= 0)
1544 continue;
1545
1546 found = true;
1547
1548 sio_data.access = access;
1549
1550 if (access == access_asuswmi) {
1551 sio_data.sio_outb = superio_wmi_outb;
1552 sio_data.sio_inb = superio_wmi_inb;
1553 sio_data.sio_select = superio_wmi_select;
1554 sio_data.sio_enter = superio_wmi_enter;
1555 sio_data.sio_exit = superio_wmi_exit;
1556 }
1557
1558 pdev[i] = platform_device_alloc(DRVNAME, address);
1559 if (!pdev[i]) {
1560 err = -ENOMEM;
1561 goto exit_device_unregister;
1562 }
1563
1564 err = platform_device_add_data(pdev[i], &sio_data,
1565 sizeof(struct nct6775_sio_data));
1566 if (err)
1567 goto exit_device_put;
1568
1569 if (sio_data.access == access_direct) {
1570 memset(&res, 0, sizeof(res));
1571 res.name = DRVNAME;
1572 res.start = address + IOREGION_OFFSET;
1573 res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1;
1574 res.flags = IORESOURCE_IO;
1575
1576 err = acpi_check_resource_conflict(&res);
1577 if (err) {
1578 platform_device_put(pdev[i]);
1579 pdev[i] = NULL;
1580 continue;
1581 }
1582
1583 err = platform_device_add_resources(pdev[i], &res, 1);
1584 if (err)
1585 goto exit_device_put;
1586 }
1587
1588 /* platform_device_add calls probe() */
1589 err = platform_device_add(pdev[i]);
1590 if (err)
1591 goto exit_device_put;
1592 }
1593 if (!found) {
1594 err = -ENODEV;
1595 goto exit_unregister;
1596 }
1597
1598 return 0;
1599
1600exit_device_put:
1601 platform_device_put(pdev[i]);
1602exit_device_unregister:
1603 while (i--)
1604 platform_device_unregister(pdev[i]);
1605exit_unregister:
1606 platform_driver_unregister(&nct6775_driver);
1607 return err;
1608}
1609
1610static void __exit sensors_nct6775_platform_exit(void)
1611{
1612 int i;
1613
1614 for (i = 0; i < ARRAY_SIZE(pdev); i++)
1615 platform_device_unregister(pdev[i]);
1616 platform_driver_unregister(&nct6775_driver);
1617}
1618
1619MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
1620MODULE_DESCRIPTION("Platform driver for NCT6775F and compatible chips");
1621MODULE_LICENSE("GPL");
1622MODULE_IMPORT_NS(HWMON_NCT6775);
1623
1624module_init(sensors_nct6775_platform_init);
1625module_exit(sensors_nct6775_platform_exit);