修改GPIO导出默认初始值

hc

2024-10-16 50a212ec906f7524620675f0c57357691c26c81f

 kernel/drivers/acpi/thermal.c
..
..
@@ -1,22 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /*
2
3
  *  acpi_thermal.c - ACPI Thermal Zone Driver ($Revision: 41 $)
3
4
  *
4
5
  *  Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
5
6
  *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
6
- *
7
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8
- *
9
- *  This program is free software; you can redistribute it and/or modify
10
- *  it under the terms of the GNU General Public License as published by
11
- *  the Free Software Foundation; either version 2 of the License, or (at
12
- *  your option) any later version.
13
- *
14
- *  This program is distributed in the hope that it will be useful, but
15
- *  WITHOUT ANY WARRANTY; without even the implied warranty of
16
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17
- *  General Public License for more details.
18
- *
19
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
20
7
  *
21
8
  *  This driver fully implements the ACPI thermal policy as described in the
22
9
  *  ACPI 2.0 Specification.
..
..
@@ -24,7 +11,6 @@
24
11
  *  TBD: 1. Implement passive cooling hysteresis.
25
12
  *       2. Enhance passive cooling (CPU) states/limit interface to support
26
13
  *          concepts of 'multiple limiters', upper/lower limits, etc.
27
- *
28
14
  */
29
15
 
30
16
 #include <linux/kernel.h>
..
..
@@ -41,6 +27,7 @@
41
27
 #include <linux/acpi.h>
42
28
 #include <linux/workqueue.h>
43
29
 #include <linux/uaccess.h>
30
+#include <linux/units.h>
44
31
 
45
32
 #define PREFIX "ACPI: "
46
33
 
..
..
@@ -185,8 +172,7 @@
185
172
 	struct acpi_thermal_trips trips;
186
173
 	struct acpi_handle_list devices;
187
174
 	struct thermal_zone_device *thermal_zone;
188
-	int tz_enabled;
189
-	int kelvin_offset;
175
+	int kelvin_offset;	/* in millidegrees */
190
176
 	struct work_struct thermal_check_work;
191
177
 	struct mutex thermal_check_lock;
192
178
 	refcount_t thermal_check_count;
..
..
@@ -241,13 +227,9 @@
241
227
 	if (!tz)
242
228
 		return -EINVAL;
243
229
 
244
-	if (!acpi_has_method(tz->device->handle, "_SCP")) {
245
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n"));
230
+	if (ACPI_FAILURE(acpi_execute_simple_method(tz->device->handle,
231
+						    "_SCP", mode)))
246
232
 		return -ENODEV;
247
-	} else if (ACPI_FAILURE(acpi_execute_simple_method(tz->device->handle,
248
-							   "_SCP", mode))) {
249
-		return -ENODEV;
250
-	}
251
233
 
252
234
 	return 0;
253
235
 }
..
..
@@ -317,7 +299,8 @@
317
299
 			if (crt == -1) {
318
300
 				tz->trips.critical.flags.valid = 0;
319
301
 			} else if (crt > 0) {
320
-				unsigned long crt_k = CELSIUS_TO_DECI_KELVIN(crt);
302
+				unsigned long crt_k = celsius_to_deci_kelvin(crt);
303
+
321
304
 				/*
322
305
 				 * Allow override critical threshold
323
306
 				 */
..
..
@@ -353,7 +336,7 @@
353
336
 		if (psv == -1) {
354
337
 			status = AE_SUPPORT;
355
338
 		} else if (psv > 0) {
356
-			tmp = CELSIUS_TO_DECI_KELVIN(psv);
339
+			tmp = celsius_to_deci_kelvin(psv);
357
340
 			status = AE_OK;
358
341
 		} else {
359
342
 			status = acpi_evaluate_integer(tz->device->handle,
..
..
@@ -433,7 +416,7 @@
433
416
 					break;
434
417
 				if (i == 1)
435
418
 					tz->trips.active[0].temperature =
436
-						CELSIUS_TO_DECI_KELVIN(act);
419
+						celsius_to_deci_kelvin(act);
437
420
 				else
438
421
 					/*
439
422
 					 * Don't allow override higher than
..
..
@@ -441,9 +424,9 @@
441
424
 					 */
442
425
 					tz->trips.active[i - 1].temperature =
443
426
 						(tz->trips.active[i - 2].temperature <
444
-						CELSIUS_TO_DECI_KELVIN(act) ?
427
+						celsius_to_deci_kelvin(act) ?
445
428
 						tz->trips.active[i - 2].temperature :
446
-						CELSIUS_TO_DECI_KELVIN(act));
429
+						celsius_to_deci_kelvin(act));
447
430
 				break;
448
431
 			} else {
449
432
 				tz->trips.active[i].temperature = tmp;
..
..
@@ -479,8 +462,7 @@
479
462
 			break;
480
463
 	}
481
464
 
482
-	if ((flag & ACPI_TRIPS_DEVICES)
483
-	    && acpi_has_method(tz->device->handle, "_TZD")) {
465
+	if (flag & ACPI_TRIPS_DEVICES) {
484
466
 		memset(&devices, 0, sizeof(devices));
485
467
 		status = acpi_evaluate_reference(tz->device->handle, "_TZD",
486
468
 						NULL, &devices);
..
..
@@ -529,54 +511,8 @@
529
511
 	if (result)
530
512
 		return result;
531
513
 
532
-	*temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(tz->temperature,
514
+	*temp = deci_kelvin_to_millicelsius_with_offset(tz->temperature,
533
515
 							tz->kelvin_offset);
534
-	return 0;
535
-}
536
-
537
-static int thermal_get_mode(struct thermal_zone_device *thermal,
538
-				enum thermal_device_mode *mode)
539
-{
540
-	struct acpi_thermal *tz = thermal->devdata;
541
-
542
-	if (!tz)
543
-		return -EINVAL;
544
-
545
-	*mode = tz->tz_enabled ? THERMAL_DEVICE_ENABLED :
546
-		THERMAL_DEVICE_DISABLED;
547
-
548
-	return 0;
549
-}
550
-
551
-static void acpi_thermal_check_fn(struct work_struct *work);
552
-
553
-static int thermal_set_mode(struct thermal_zone_device *thermal,
554
-				enum thermal_device_mode mode)
555
-{
556
-	struct acpi_thermal *tz = thermal->devdata;
557
-	int enable;
558
-
559
-	if (!tz)
560
-		return -EINVAL;
561
-
562
-	/*
563
-	 * enable/disable thermal management from ACPI thermal driver
564
-	 */
565
-	if (mode == THERMAL_DEVICE_ENABLED)
566
-		enable = 1;
567
-	else if (mode == THERMAL_DEVICE_DISABLED) {
568
-		enable = 0;
569
-		pr_warn("thermal zone will be disabled\n");
570
-	} else
571
-		return -EINVAL;
572
-
573
-	if (enable != tz->tz_enabled) {
574
-		tz->tz_enabled = enable;
575
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
576
-			"%s kernel ACPI thermal control\n",
577
-			tz->tz_enabled ? "Enable" : "Disable"));
578
-		acpi_thermal_check_fn(&tz->thermal_check_work);
579
-	}
580
516
 	return 0;
581
517
 }
582
518
 
..
..
@@ -636,7 +572,7 @@
636
572
 
637
573
 	if (tz->trips.critical.flags.valid) {
638
574
 		if (!trip) {
639
-			*temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(
575
+			*temp = deci_kelvin_to_millicelsius_with_offset(
640
576
 				tz->trips.critical.temperature,
641
577
 				tz->kelvin_offset);
642
578
 			return 0;
..
..
@@ -646,7 +582,7 @@
646
582
 
647
583
 	if (tz->trips.hot.flags.valid) {
648
584
 		if (!trip) {
649
-			*temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(
585
+			*temp = deci_kelvin_to_millicelsius_with_offset(
650
586
 				tz->trips.hot.temperature,
651
587
 				tz->kelvin_offset);
652
588
 			return 0;
..
..
@@ -656,7 +592,7 @@
656
592
 
657
593
 	if (tz->trips.passive.flags.valid) {
658
594
 		if (!trip) {
659
-			*temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(
595
+			*temp = deci_kelvin_to_millicelsius_with_offset(
660
596
 				tz->trips.passive.temperature,
661
597
 				tz->kelvin_offset);
662
598
 			return 0;
..
..
@@ -667,7 +603,7 @@
667
603
 	for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE &&
668
604
 		tz->trips.active[i].flags.valid; i++) {
669
605
 		if (!trip) {
670
-			*temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(
606
+			*temp = deci_kelvin_to_millicelsius_with_offset(
671
607
 				tz->trips.active[i].temperature,
672
608
 				tz->kelvin_offset);
673
609
 			return 0;
..
..
@@ -684,7 +620,7 @@
684
620
 	struct acpi_thermal *tz = thermal->devdata;
685
621
 
686
622
 	if (tz->trips.critical.flags.valid) {
687
-		*temperature = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(
623
+		*temperature = deci_kelvin_to_millicelsius_with_offset(
688
624
 				tz->trips.critical.temperature,
689
625
 				tz->kelvin_offset);
690
626
 		return 0;
..
..
@@ -704,7 +640,7 @@
704
640
 
705
641
 	if (type == THERMAL_TRIP_ACTIVE) {
706
642
 		int trip_temp;
707
-		int temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(
643
+		int temp = deci_kelvin_to_millicelsius_with_offset(
708
644
 					tz->temperature, tz->kelvin_offset);
709
645
 		if (thermal_get_trip_temp(thermal, trip, &trip_temp))
710
646
 			return -EINVAL;
..
..
@@ -866,8 +802,6 @@
866
802
 	.bind = acpi_thermal_bind_cooling_device,
867
803
 	.unbind	= acpi_thermal_unbind_cooling_device,
868
804
 	.get_temp = thermal_get_temp,
869
-	.get_mode = thermal_get_mode,
870
-	.set_mode = thermal_set_mode,
871
805
 	.get_trip_type = thermal_get_trip_type,
872
806
 	.get_trip_temp = thermal_get_trip_temp,
873
807
 	.get_crit_temp = thermal_get_crit_temp,
..
..
@@ -911,23 +845,39 @@
911
845
 	result = sysfs_create_link(&tz->device->dev.kobj,
912
846
 				   &tz->thermal_zone->device.kobj, "thermal_zone");
913
847
 	if (result)
914
-		return result;
848
+		goto unregister_tzd;
915
849
 
916
850
 	result = sysfs_create_link(&tz->thermal_zone->device.kobj,
917
851
 				   &tz->device->dev.kobj, "device");
918
852
 	if (result)
919
-		return result;
853
+		goto remove_tz_link;
920
854
 
921
855
 	status =  acpi_bus_attach_private_data(tz->device->handle,
922
856
 					       tz->thermal_zone);
923
-	if (ACPI_FAILURE(status))
924
-		return -ENODEV;
857
+	if (ACPI_FAILURE(status)) {
858
+		result = -ENODEV;
859
+		goto remove_dev_link;
860
+	}
925
861
 
926
-	tz->tz_enabled = 1;
862
+	result = thermal_zone_device_enable(tz->thermal_zone);
863
+	if (result)
864
+		goto acpi_bus_detach;
927
865
 
928
866
 	dev_info(&tz->device->dev, "registered as thermal_zone%d\n",
929
867
 		 tz->thermal_zone->id);
868
+
930
869
 	return 0;
870
+
871
+acpi_bus_detach:
872
+	acpi_bus_detach_private_data(tz->device->handle);
873
+remove_dev_link:
874
+	sysfs_remove_link(&tz->thermal_zone->device.kobj, "device");
875
+remove_tz_link:
876
+	sysfs_remove_link(&tz->device->dev.kobj, "thermal_zone");
877
+unregister_tzd:
878
+	thermal_zone_device_unregister(tz->thermal_zone);
879
+
880
+	return result;
931
881
 }
932
882
 
933
883
 static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz)
..
..
@@ -1061,9 +1011,9 @@
1061
1011
 {
1062
1012
 	if (tz->trips.critical.flags.valid &&
1063
1013
 	    (tz->trips.critical.temperature % 5) == 1)
1064
-		tz->kelvin_offset = 2731;
1014
+		tz->kelvin_offset = 273100;
1065
1015
 	else
1066
-		tz->kelvin_offset = 2732;
1016
+		tz->kelvin_offset = 273200;
1067
1017
 }
1068
1018
 
1069
1019
 static void acpi_thermal_check_fn(struct work_struct *work)
..
..
@@ -1071,8 +1021,6 @@
1071
1021
 	struct acpi_thermal *tz = container_of(work, struct acpi_thermal,
1072
1022
 					       thermal_check_work);
1073
1023
 
1074
-	if (!tz->tz_enabled)
1075
-		return;
1076
1024
 	/*
1077
1025
 	 * In general, it is not sufficient to check the pending bit, because
1078
1026
 	 * subsequent instances of this function may be queued after one of them
..
..
@@ -1127,7 +1075,7 @@
1127
1075
 	INIT_WORK(&tz->thermal_check_work, acpi_thermal_check_fn);
1128
1076
 
1129
1077
 	pr_info(PREFIX "%s [%s] (%ld C)\n", acpi_device_name(device),
1130
-		acpi_device_bid(device), DECI_KELVIN_TO_CELSIUS(tz->temperature));
1078
+		acpi_device_bid(device), deci_kelvin_to_celsius(tz->temperature));
1131
1079
 	goto end;
1132
1080
 
1133
1081
 free_memory:
..
..
@@ -1172,8 +1120,6 @@
1172
1120
 		return -EINVAL;
1173
1121
 
1174
1122
 	for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
1175
-		if (!(&tz->trips.active[i]))
1176
-			break;
1177
1123
 		if (!tz->trips.active[i].flags.valid)
1178
1124
 			break;
1179
1125
 		tz->trips.active[i].flags.enabled = 1;