1 // SPDX-License-Identifier: GPL-2.0-or-later
6  * Copyright (C) 2014-2015 Pali Rohár <pali@kernel.org>
22 #include <linux/input/sparse-keymap.h>
28 #include "dell-smbios.h"
29 #include "dell-wmi-descriptor.h"
30 #include "dell-wmi-privacy.h"
37 #define DELL_EVENT_GUID "9DBB5994-A997-11DA-B012-B622A1EF5492"
165 	 * Originally Matthew Garrett created this dell-wmi driver specially for
257 	/* Fn-lock switched to function keys */
260 	/* Fn-lock switched to multimedia keys */
282 	/* Mic mute */
285 	/* Fn-lock */
292 	 * Radio disable (notify only -- there is no model for which the
318 	 * Radio disable (notify only -- there is no model for which the
323 	/* Fn-lock */
375 	/* Ultra-performance mode switch request */
378 	/* Fn-lock button pressed */
394 		__set_bit(EV_SW, (dev)->evbit);  in dell_wmi_switch_event()
395 		__set_bit(switchid, (dev)->swbit);  in dell_wmi_switch_event()
397 		(dev)->name = devname;  in dell_wmi_switch_event()
398 		(dev)->id.bustype = BUS_HOST;  in dell_wmi_switch_event()
413 	struct dell_wmi_priv *priv = dev_get_drvdata(&wdev->dev);  in dell_wmi_process_key()
418 	key = sparse_keymap_entry_from_scancode(priv->input_dev,  in dell_wmi_process_key()
429 	if ((key->keycode == KEY_BRIGHTNESSUP ||  in dell_wmi_process_key()
430 	     key->keycode == KEY_BRIGHTNESSDOWN) &&  in dell_wmi_process_key()
437 	if (key->keycode == KEY_KBDILLUMTOGGLE) {  in dell_wmi_process_key()
441 		dell_wmi_switch_event(&priv->tabletswitch_dev,  in dell_wmi_process_key()
455 	sparse_keymap_report_entry(priv->input_dev, key, value, true);  in dell_wmi_process_key()
463 	struct dell_wmi_priv *priv = dev_get_drvdata(&wdev->dev);  in dell_wmi_notify()
468 	if (obj->type != ACPI_TYPE_BUFFER) {  in dell_wmi_notify()
469 		pr_warn("bad response type %x\n", obj->type);  in dell_wmi_notify()
474 		obj->buffer.length, obj->buffer.pointer);  in dell_wmi_notify()
476 	buffer_entry = (u16 *)obj->buffer.pointer;  in dell_wmi_notify()
477 	buffer_size = obj->buffer.length/2;  in dell_wmi_notify()
492 	if (priv->interface_version == 0 && buffer_entry < buffer_end)  in dell_wmi_notify()
517 						     len - 3);  in dell_wmi_notify()
526 							  len - i - 1);  in dell_wmi_notify()
534 						     buffer_entry + 3, len - 3);  in dell_wmi_notify()
563 	int hotkey_num, i, pos = 0;  in handle_dmi_entry()  local
566 	if (results->err || results->keymap)  in handle_dmi_entry()
570 	if (dm->type != 0xb2)  in handle_dmi_entry()
575 	hotkey_num = (table->header.length -  in handle_dmi_entry()
580 		 * Historically, dell-wmi would ignore a DMI entry of  in handle_dmi_entry()
591 		results->err = -ENOMEM;  in handle_dmi_entry()
597 					&table->keymap[i];  in handle_dmi_entry()
600 		u16 keycode = (bios_entry->keycode <  in handle_dmi_entry()
602 			bios_to_linux_keycode[bios_entry->keycode] :  in handle_dmi_entry()
603 			(bios_entry->keycode == 0xffff ? KEY_UNKNOWN : KEY_RESERVED);  in handle_dmi_entry()
612 				bios_entry->scancode, bios_entry->keycode);  in handle_dmi_entry()
617 			keymap[pos].type = KE_IGNORE;  in handle_dmi_entry()
619 			keymap[pos].type = KE_KEY;  in handle_dmi_entry()
620 		keymap[pos].code = bios_entry->scancode;  in handle_dmi_entry()
621 		keymap[pos].keycode = keycode;  in handle_dmi_entry()
623 		pos++;  in handle_dmi_entry()
626 	results->keymap = keymap;  in handle_dmi_entry()
627 	results->keymap_size = pos;  in handle_dmi_entry()
632 	struct dell_wmi_priv *priv = dev_get_drvdata(&wdev->dev);  in dell_wmi_input_setup()
635 	int err, i, pos = 0;  in dell_wmi_input_setup()  local
637 	priv->input_dev = input_allocate_device();  in dell_wmi_input_setup()
638 	if (!priv->input_dev)  in dell_wmi_input_setup()
639 		return -ENOMEM;  in dell_wmi_input_setup()
641 	priv->input_dev->name = "Dell WMI hotkeys";  in dell_wmi_input_setup()
642 	priv->input_dev->id.bustype = BUS_HOST;  in dell_wmi_input_setup()
643 	priv->input_dev->dev.parent = &wdev->dev;  in dell_wmi_input_setup()
647 		 * Historically, dell-wmi ignored dmi_walk errors.  A failure  in dell_wmi_input_setup()
651 		pr_warn("no DMI; using the old-style hotkey interface\n");  in dell_wmi_input_setup()
668 		err = -ENOMEM;  in dell_wmi_input_setup()
674 		keymap[pos] = dmi_results.keymap[i];  in dell_wmi_input_setup()
675 		keymap[pos].code |= (0x0010 << 16);  in dell_wmi_input_setup()
676 		pos++;  in dell_wmi_input_setup()
691 		    have_scancode(entry->code | (0x0010 << 16),  in dell_wmi_input_setup()
696 		keymap[pos] = *entry;  in dell_wmi_input_setup()
697 		keymap[pos].code |= (0x0010 << 16);  in dell_wmi_input_setup()
698 		pos++;  in dell_wmi_input_setup()
703 		keymap[pos] = dell_wmi_keymap_type_0011[i];  in dell_wmi_input_setup()
704 		keymap[pos].code |= (0x0011 << 16);  in dell_wmi_input_setup()
705 		pos++;  in dell_wmi_input_setup()
710 		keymap[pos] = dell_wmi_keymap_type_0012[i];  in dell_wmi_input_setup()
711 		keymap[pos].code |= (0x0012 << 16);  in dell_wmi_input_setup()
712 		pos++;  in dell_wmi_input_setup()
720 		keymap[pos] = dell_wmi_keymap_type_0000[i];  in dell_wmi_input_setup()
721 		pos++;  in dell_wmi_input_setup()
724 	keymap[pos].type = KE_END;  in dell_wmi_input_setup()
726 	err = sparse_keymap_setup(priv->input_dev, keymap, NULL);  in dell_wmi_input_setup()
735 	err = input_register_device(priv->input_dev);  in dell_wmi_input_setup()
742 	input_free_device(priv->input_dev);  in dell_wmi_input_setup()
748 	struct dell_wmi_priv *priv = dev_get_drvdata(&wdev->dev);  in dell_wmi_input_destroy()
750 	input_unregister_device(priv->input_dev);  in dell_wmi_input_destroy()
751 	if (priv->tabletswitch_dev)  in dell_wmi_input_destroy()
752 		input_unregister_device(priv->tabletswitch_dev);  in dell_wmi_input_destroy()
768  *     cbRes1 Standard return codes (0, -1, -2)
778 		return -ENOMEM;  in dell_wmi_events_set_enabled()
779 	buffer->cmd_class = CLASS_INFO;  in dell_wmi_events_set_enabled()
780 	buffer->cmd_select = SELECT_APP_REGISTRATION;  in dell_wmi_events_set_enabled()
781 	buffer->input[0] = 0x10000;  in dell_wmi_events_set_enabled()
782 	buffer->input[1] = 0x51534554;  in dell_wmi_events_set_enabled()
783 	buffer->input[3] = enable;  in dell_wmi_events_set_enabled()
786 		ret = buffer->output[0];  in dell_wmi_events_set_enabled()
802 		&wdev->dev, sizeof(struct dell_wmi_priv), GFP_KERNEL);  in dell_wmi_probe()
804 		return -ENOMEM;  in dell_wmi_probe()
805 	dev_set_drvdata(&wdev->dev, priv);  in dell_wmi_probe()
807 	if (!dell_wmi_get_interface_version(&priv->interface_version))  in dell_wmi_probe()
808 		return -EPROBE_DEFER;  in dell_wmi_probe()
824 		.name = "dell-wmi",