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2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e 
 kernel/drivers/platform/x86/hp-wmi.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * HP WMI hotkeys
34  *
....@@ -8,20 +9,6 @@
89  * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
910  * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
1011  * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
11
- *
12
- *  This program is free software; you can redistribute it and/or modify
13
- *  it under the terms of the GNU General Public License as published by
14
- *  the Free Software Foundation; either version 2 of the License, or
15
- *  (at your option) any later version.
16
- *
17
- *  This program is distributed in the hope that it will be useful,
18
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
19
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20
- *  GNU General Public License for more details.
21
- *
22
- *  You should have received a copy of the GNU General Public License
23
- *  along with this program; if not, write to the Free Software
24
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
2512  */
2613 
2714 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
....@@ -75,6 +62,8 @@
7562 	HPWMI_BACKLIT_KB_BRIGHTNESS	= 0x0D,
7663 	HPWMI_PEAKSHIFT_PERIOD		= 0x0F,
7764 	HPWMI_BATTERY_CHARGE_PERIOD	= 0x10,
65
+	HPWMI_SANITIZATION_MODE		= 0x17,
66
+	HPWMI_SMART_EXPERIENCE_APP	= 0x21,
7867 };
7968 
8069 struct bios_args {
....@@ -98,6 +87,7 @@
9887 	HPWMI_FEATURE2_QUERY		= 0x0d,
9988 	HPWMI_WIRELESS2_QUERY		= 0x1b,
10089 	HPWMI_POSTCODEERROR_QUERY	= 0x2a,
90
+	HPWMI_THERMAL_POLICY_QUERY	= 0x4c,
10191 };
10292 
10393 enum hp_wmi_command {
....@@ -128,10 +118,10 @@
128118 	HPWMI_POWER_SOFT	= 0x02,
129119 	HPWMI_POWER_BIOS	= 0x04,
130120 	HPWMI_POWER_HARD	= 0x08,
121
+	HPWMI_POWER_FW_OR_HW	= HPWMI_POWER_BIOS | HPWMI_POWER_HARD,
131122 };
132123 
133
-#define IS_HWBLOCKED(x) ((x & (HPWMI_POWER_BIOS | HPWMI_POWER_HARD)) \
134
-			 != (HPWMI_POWER_BIOS | HPWMI_POWER_HARD))
124
+#define IS_HWBLOCKED(x) ((x & HPWMI_POWER_FW_OR_HW) != HPWMI_POWER_FW_OR_HW)
135125 #define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
136126 
137127 struct bios_rfkill2_device_state {
....@@ -263,7 +253,8 @@
263253 	ret = bios_return->return_code;
264254 
265255 	if (ret) {
266
-		if (ret != HPWMI_RET_UNKNOWN_CMDTYPE)
256
+		if (ret != HPWMI_RET_UNKNOWN_COMMAND &&
257
+		    ret != HPWMI_RET_UNKNOWN_CMDTYPE)
267258 			pr_warn("query 0x%x returned error 0x%x\n", query, ret);
268259 		goto out_free;
269260 	}
....@@ -496,22 +487,20 @@
496487 static ssize_t postcode_store(struct device *dev, struct device_attribute *attr,
497488 			      const char *buf, size_t count)
498489 {
499
-	long unsigned int tmp2;
490
+	u32 tmp = 1;
491
+	bool clear;
500492 	int ret;
501
-	u32 tmp;
502493 
503
-	ret = kstrtoul(buf, 10, &tmp2);
504
-	if (!ret && tmp2 != 1)
505
-		ret = -EINVAL;
494
+	ret = kstrtobool(buf, &clear);
506495 	if (ret)
507
-		goto out;
496
+		return ret;
497
+
498
+	if (clear == false)
499
+		return -EINVAL;
508500 
509501 	/* Clear the POST error code. It is kept until until cleared. */
510
-	tmp = (u32) tmp2;
511502 	ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, HPWMI_WRITE, &tmp,
512503 				       sizeof(tmp), sizeof(tmp));
513
-
514
-out:
515504 	if (ret)
516505 		return ret < 0 ? ret : -EINVAL;
517506 
....@@ -524,6 +513,17 @@
524513 static DEVICE_ATTR_RO(dock);
525514 static DEVICE_ATTR_RO(tablet);
526515 static DEVICE_ATTR_RW(postcode);
516
+
517
+static struct attribute *hp_wmi_attrs[] = {
518
+	&dev_attr_display.attr,
519
+	&dev_attr_hddtemp.attr,
520
+	&dev_attr_als.attr,
521
+	&dev_attr_dock.attr,
522
+	&dev_attr_tablet.attr,
523
+	&dev_attr_postcode.attr,
524
+	NULL,
525
+};
526
+ATTRIBUTE_GROUPS(hp_wmi);
527527 
528528 static void hp_wmi_notify(u32 value, void *context)
529529 {
....@@ -631,6 +631,10 @@
631631 		break;
632632 	case HPWMI_BATTERY_CHARGE_PERIOD:
633633 		break;
634
+	case HPWMI_SANITIZATION_MODE:
635
+		break;
636
+	case HPWMI_SMART_EXPERIENCE_APP:
637
+		break;
634638 	default:
635639 		pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
636640 		break;
....@@ -701,16 +705,6 @@
701705 {
702706 	wmi_remove_notify_handler(HPWMI_EVENT_GUID);
703707 	input_unregister_device(hp_wmi_input_dev);
704
-}
705
-
706
-static void cleanup_sysfs(struct platform_device *device)
707
-{
708
-	device_remove_file(&device->dev, &dev_attr_display);
709
-	device_remove_file(&device->dev, &dev_attr_hddtemp);
710
-	device_remove_file(&device->dev, &dev_attr_als);
711
-	device_remove_file(&device->dev, &dev_attr_dock);
712
-	device_remove_file(&device->dev, &dev_attr_tablet);
713
-	device_remove_file(&device->dev, &dev_attr_postcode);
714708 }
715709 
716710 static int __init hp_wmi_rfkill_setup(struct platform_device *device)
....@@ -881,48 +875,53 @@
881875 	return err;
882876 }
883877 
878
+static int thermal_policy_setup(struct platform_device *device)
879
+{
880
+	int err, tp;
881
+
882
+	tp = hp_wmi_read_int(HPWMI_THERMAL_POLICY_QUERY);
883
+	if (tp < 0)
884
+		return tp;
885
+
886
+	/*
887
+	 * call thermal policy write command to ensure that the firmware correctly
888
+	 * sets the OEM variables for the DPTF
889
+	 */
890
+	err = hp_wmi_perform_query(HPWMI_THERMAL_POLICY_QUERY, HPWMI_WRITE, &tp,
891
+							   sizeof(tp), 0);
892
+	if (err)
893
+		return err;
894
+
895
+	return 0;
896
+}
897
+
884898 static int __init hp_wmi_bios_setup(struct platform_device *device)
885899 {
886
-	int err;
887
-
888900 	/* clear detected rfkill devices */
889901 	wifi_rfkill = NULL;
890902 	bluetooth_rfkill = NULL;
891903 	wwan_rfkill = NULL;
892904 	rfkill2_count = 0;
893905 
894
-	if (hp_wmi_rfkill_setup(device))
895
-		hp_wmi_rfkill2_setup(device);
906
+	/*
907
+	 * In pre-2009 BIOS, command 1Bh return 0x4 to indicate that
908
+	 * BIOS no longer controls the power for the wireless
909
+	 * devices. All features supported by this command will no
910
+	 * longer be supported.
911
+	 */
912
+	if (!hp_wmi_bios_2009_later()) {
913
+		if (hp_wmi_rfkill_setup(device))
914
+			hp_wmi_rfkill2_setup(device);
915
+	}
896916 
897
-	err = device_create_file(&device->dev, &dev_attr_display);
898
-	if (err)
899
-		goto add_sysfs_error;
900
-	err = device_create_file(&device->dev, &dev_attr_hddtemp);
901
-	if (err)
902
-		goto add_sysfs_error;
903
-	err = device_create_file(&device->dev, &dev_attr_als);
904
-	if (err)
905
-		goto add_sysfs_error;
906
-	err = device_create_file(&device->dev, &dev_attr_dock);
907
-	if (err)
908
-		goto add_sysfs_error;
909
-	err = device_create_file(&device->dev, &dev_attr_tablet);
910
-	if (err)
911
-		goto add_sysfs_error;
912
-	err = device_create_file(&device->dev, &dev_attr_postcode);
913
-	if (err)
914
-		goto add_sysfs_error;
917
+	thermal_policy_setup(device);
918
+
915919 	return 0;
916
-
917
-add_sysfs_error:
918
-	cleanup_sysfs(device);
919
-	return err;
920920 }
921921 
922922 static int __exit hp_wmi_bios_remove(struct platform_device *device)
923923 {
924924 	int i;
925
-	cleanup_sysfs(device);
926925 
927926 	for (i = 0; i < rfkill2_count; i++) {
928927 		rfkill_unregister(rfkill2[i].rfkill);
....@@ -991,6 +990,7 @@
991990 	.driver = {
992991 		.name = "hp-wmi",
993992 		.pm = &hp_wmi_pm_ops,
993
+		.dev_groups = hp_wmi_groups,
994994 	},
995995 	.remove = __exit_p(hp_wmi_bios_remove),
996996 };