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2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87 
 kernel/drivers/platform/x86/dell-wmi.c
....@@ -1,27 +1,14 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * Dell WMI hotkeys
34  *
45  * Copyright (C) 2008 Red Hat <mjg@redhat.com>
5
- * Copyright (C) 2014-2015 Pali Rohár <pali.rohar@gmail.com>
6
+ * Copyright (C) 2014-2015 Pali Rohár <pali@kernel.org>
67  *
78  * Portions based on wistron_btns.c:
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
....@@ -42,15 +29,13 @@
4229 #include "dell-wmi-descriptor.h"
4330 
4431 MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
45
-MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
32
+MODULE_AUTHOR("Pali Rohár <pali@kernel.org>");
4633 MODULE_DESCRIPTION("Dell laptop WMI hotkeys driver");
4734 MODULE_LICENSE("GPL");
4835 
4936 #define DELL_EVENT_GUID "9DBB5994-A997-11DA-B012-B622A1EF5492"
5037 
5138 static bool wmi_requires_smbios_request;
52
-
53
-MODULE_ALIAS("wmi:"DELL_EVENT_GUID);
5439 
5540 struct dell_wmi_priv {
5641 	struct input_dev *input_dev;
....@@ -267,6 +252,13 @@
267252 	/* Fn-lock switched to multimedia keys */
268253 	{ KE_IGNORE, 0x1, { KEY_RESERVED } },
269254 
255
+	/* Keyboard backlight change notification */
256
+	{ KE_IGNORE, 0x3f, { KEY_RESERVED } },
257
+
258
+	/* Backlight brightness level */
259
+	{ KE_KEY,    0x57, { KEY_BRIGHTNESSDOWN } },
260
+	{ KE_KEY,    0x58, { KEY_BRIGHTNESSUP } },
261
+
270262 	/* Mic mute */
271263 	{ KE_KEY, 0x150, { KEY_MICMUTE } },
272264 
....@@ -322,12 +314,33 @@
322314 	/* Battery inserted */
323315 	{ KE_IGNORE, 0xfff1, { KEY_RESERVED } },
324316 
317
+	/*
318
+	 * Detachable keyboard detached / undocked
319
+	 * Note SW_TABLET_MODE is already reported through the intel_vbtn
320
+	 * driver for this, so we ignore it.
321
+	 */
322
+	{ KE_IGNORE, 0xfff2, { KEY_RESERVED } },
323
+
324
+	/* Detachable keyboard attached / docked */
325
+	{ KE_IGNORE, 0xfff3, { KEY_RESERVED } },
326
+
325327 	/* Keyboard backlight level changed */
326
-	{ KE_IGNORE, 0x01e1, { KEY_RESERVED } },
327
-	{ KE_IGNORE, 0x02ea, { KEY_RESERVED } },
328
-	{ KE_IGNORE, 0x02eb, { KEY_RESERVED } },
329
-	{ KE_IGNORE, 0x02ec, { KEY_RESERVED } },
330
-	{ KE_IGNORE, 0x02f6, { KEY_RESERVED } },
328
+	{ KE_IGNORE, KBD_LED_OFF_TOKEN,      { KEY_RESERVED } },
329
+	{ KE_IGNORE, KBD_LED_ON_TOKEN,       { KEY_RESERVED } },
330
+	{ KE_IGNORE, KBD_LED_AUTO_TOKEN,     { KEY_RESERVED } },
331
+	{ KE_IGNORE, KBD_LED_AUTO_25_TOKEN,  { KEY_RESERVED } },
332
+	{ KE_IGNORE, KBD_LED_AUTO_50_TOKEN,  { KEY_RESERVED } },
333
+	{ KE_IGNORE, KBD_LED_AUTO_75_TOKEN,  { KEY_RESERVED } },
334
+	{ KE_IGNORE, KBD_LED_AUTO_100_TOKEN, { KEY_RESERVED } },
335
+};
336
+
337
+/*
338
+ * Keymap for WMI events of type 0x0012
339
+ * They are events with extended data
340
+ */
341
+static const struct key_entry dell_wmi_keymap_type_0012[] = {
342
+	/* Fn-lock button pressed */
343
+	{ KE_IGNORE, 0xe035, { KEY_RESERVED } },
331344 };
332345 
333346 static void dell_wmi_process_key(struct wmi_device *wdev, int type, int code)
....@@ -414,10 +427,11 @@
414427 
415428 		switch (buffer_entry[1]) {
416429 		case 0x0000: /* One key pressed or event occurred */
430
+		case 0x0012: /* Event with extended data occurred */
417431 			if (len > 2)
418
-				dell_wmi_process_key(wdev, 0x0000,
432
+				dell_wmi_process_key(wdev, buffer_entry[1],
419433 						     buffer_entry[2]);
420
-			/* Other entries could contain additional information */
434
+			/* Extended data is currently ignored */
421435 			break;
422436 		case 0x0010: /* Sequence of keys pressed */
423437 		case 0x0011: /* Sequence of events occurred */
....@@ -492,7 +506,7 @@
492506 		u16 keycode = (bios_entry->keycode <
493507 			       ARRAY_SIZE(bios_to_linux_keycode)) ?
494508 			bios_to_linux_keycode[bios_entry->keycode] :
495
-			KEY_RESERVED;
509
+			(bios_entry->keycode == 0xffff ? KEY_UNKNOWN : KEY_RESERVED);
496510 
497511 		/*
498512 		 * Log if we find an entry in the DMI table that we don't
....@@ -552,6 +566,7 @@
552566 			 ARRAY_SIZE(dell_wmi_keymap_type_0000) +
553567 			 ARRAY_SIZE(dell_wmi_keymap_type_0010) +
554568 			 ARRAY_SIZE(dell_wmi_keymap_type_0011) +
569
+			 ARRAY_SIZE(dell_wmi_keymap_type_0012) +
555570 			 1,
556571 			 sizeof(struct key_entry), GFP_KERNEL);
557572 	if (!keymap) {
....@@ -593,6 +608,13 @@
593608 	for (i = 0; i < ARRAY_SIZE(dell_wmi_keymap_type_0011); i++) {
594609 		keymap[pos] = dell_wmi_keymap_type_0011[i];
595610 		keymap[pos].code |= (0x0011 << 16);
611
+		pos++;
612
+	}
613
+
614
+	/* Append table with events of type 0x0012 */
615
+	for (i = 0; i < ARRAY_SIZE(dell_wmi_keymap_type_0012); i++) {
616
+		keymap[pos] = dell_wmi_keymap_type_0012[i];
617
+		keymap[pos].code |= (0x0012 << 16);
596618 		pos++;
597619 	}
598620 
....@@ -671,7 +693,7 @@
671693 	return dell_smbios_error(ret);
672694 }
673695 
674
-static int dell_wmi_probe(struct wmi_device *wdev)
696
+static int dell_wmi_probe(struct wmi_device *wdev, const void *context)
675697 {
676698 	struct dell_wmi_priv *priv;
677699 	int ret;
....@@ -738,3 +760,5 @@
738760 	wmi_driver_unregister(&dell_wmi_driver);
739761 }
740762 module_exit(dell_wmi_exit);
763
+
764
+MODULE_DEVICE_TABLE(wmi, dell_wmi_id_table);