1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  button.c - ACPI Button Driver
54 	[ACPI_BUTTON_LID_INIT_METHOD]		= "method",
75 		/* GP-electronic T701, _LID method points to a floating GPIO */
143 			DMI_MATCH(DMI_PRODUCT_NAME, "Blade Pro 17 (Early 2020) - RZ09-0329"),
177 		.name = "acpi-button",
198 static long lid_init_state = -1;
215 		return -ENODEV;  in acpi_lid_evaluate_state()
222 	struct acpi_device *device = button->adev;  in acpi_lid_notify_state()
234 			button->last_state != state;  in acpi_lid_notify_state()
235 	next_report = ktime_add(button->last_time,  in acpi_lid_notify_state()
237 	if (button->last_state == state &&  in acpi_lid_notify_state()
279 				input_report_switch(button->input,  in acpi_lid_notify_state()
281 				input_sync(button->input);  in acpi_lid_notify_state()
287 		acpi_handle_debug(device->handle, "ACPI LID %s\n",  in acpi_lid_notify_state()
289 		input_report_switch(button->input, SW_LID, !state);  in acpi_lid_notify_state()
290 		input_sync(button->input);  in acpi_lid_notify_state()
291 		button->last_state = state;  in acpi_lid_notify_state()
292 		button->last_time = ktime_get();  in acpi_lid_notify_state()
299 	struct acpi_button *button = seq->private;  in acpi_button_state_seq_show()
302 	state = acpi_lid_evaluate_state(button->adev->handle);  in acpi_button_state_seq_show()
310 	struct acpi_device *device = button->adev;  in acpi_lid_add_fs()
315 		return -EEXIST;  in acpi_lid_add_fs()
321 		return -ENODEV;  in acpi_lid_add_fs()
351 	return -ENODEV;  in acpi_lid_add_fs()
357 	struct acpi_device *device = button->adev;  in acpi_lid_remove_fs()
388 	saved_lid_handle = adev->handle;  in acpi_lid_save()
395 	if (saved_lid_handle == adev->handle)  in acpi_lid_forget()
405 		return -ENODEV;  in acpi_lid_open()
415 	state = acpi_lid_evaluate_state(button->adev->handle);  in acpi_lid_update_state()
420 		acpi_pm_wakeup_event(button->dev);  in acpi_lid_update_state()
439 	button->lid_state_initialized = true;  in acpi_lid_initialize_state()
445 	struct acpi_device *device = button->adev;  in acpi_lid_notify()
448 		acpi_handle_debug(device->handle, "Unsupported event [0x%x]\n",  in acpi_lid_notify()
453 	if (!button->lid_state_initialized)  in acpi_lid_notify()
462 	struct acpi_device *device = button->adev;  in acpi_button_notify()
472 		acpi_handle_debug(device->handle, "Unsupported event [0x%x]\n",  in acpi_button_notify()
477 	acpi_pm_wakeup_event(button->dev);  in acpi_button_notify()
479 	if (button->suspended || event == ACPI_BUTTON_NOTIFY_WAKE)  in acpi_button_notify()
482 	input = button->input;  in acpi_button_notify()
483 	keycode = test_bit(KEY_SLEEP, input->keybit) ? KEY_SLEEP : KEY_POWER;  in acpi_button_notify()
490 	acpi_bus_generate_netlink_event(button->class, dev_name(&device->dev),  in acpi_button_notify()
491 					event, ++button->pushed);  in acpi_button_notify()
510 	button->suspended = true;  in acpi_button_suspend()
519 	button->suspended = false;  in acpi_button_resume()
520 	if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_resume()
521 		button->last_state = !!acpi_lid_evaluate_state(ACPI_HANDLE(dev));  in acpi_button_resume()
522 		button->last_time = ktime_get();  in acpi_button_resume()
526 	if (button->type == ACPI_BUTTON_TYPE_POWER) {  in acpi_button_resume()
527 		input = button->input;  in acpi_button_resume()
541 	button->last_state = !!acpi_lid_evaluate_state(button->adev->handle);  in acpi_lid_input_open()
542 	button->last_time = ktime_get();  in acpi_lid_input_open()
550 	if (button->type == ACPI_BUTTON_TYPE_LID)  in acpi_button_notify_handler()
570 	struct acpi_device *adev = button->adev;  in acpi_button_remove_event_handler()
572 	switch (adev->device_type) {  in acpi_button_remove_event_handler()
584 		if (button->gpe_enabled) {  in acpi_button_remove_event_handler()
585 			dev_dbg(button->dev, "Disabling ACPI GPE%02llx\n",  in acpi_button_remove_event_handler()
586 				adev->wakeup.gpe_number);  in acpi_button_remove_event_handler()
587 			acpi_disable_gpe(adev->wakeup.gpe_device,  in acpi_button_remove_event_handler()
588 					 adev->wakeup.gpe_number);  in acpi_button_remove_event_handler()
590 		acpi_remove_notify_handler(adev->handle, ACPI_ALL_NOTIFY,  in acpi_button_remove_event_handler()
604 		return -ENODEV;  in acpi_button_add_fixed_event_handler()
611 	struct acpi_device *adev = button->adev;  in acpi_button_add_event_handler()
614 	if (adev->device_type == ACPI_BUS_TYPE_POWER_BUTTON)  in acpi_button_add_event_handler()
618 	if (adev->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON)  in acpi_button_add_event_handler()
622 	status = acpi_install_notify_handler(adev->handle, ACPI_ALL_NOTIFY,  in acpi_button_add_event_handler()
626 		return -ENODEV;  in acpi_button_add_event_handler()
628 	if (!adev->wakeup.flags.valid)  in acpi_button_add_event_handler()
632 	 * If the wakeup GPE has a handler method, enable it in case it is also  in acpi_button_add_event_handler()
635 	status = acpi_enable_gpe_cond(adev->wakeup.gpe_device,  in acpi_button_add_event_handler()
636 				      adev->wakeup.gpe_number,  in acpi_button_add_event_handler()
638 	button->gpe_enabled = ACPI_SUCCESS(status);  in acpi_button_add_event_handler()
639 	if (button->gpe_enabled)  in acpi_button_add_event_handler()
640 		dev_dbg(button->dev, "Enabled ACPI GPE%02llx\n",  in acpi_button_add_event_handler()
641 			adev->wakeup.gpe_number);  in acpi_button_add_event_handler()
661 	struct device *dev = &pdev->dev;  in acpi_button_probe()
670 	if (!id || strcmp(acpi_device_hid(device), id->id))  in acpi_button_probe()
671 		return dev_err_probe(dev, -ENODEV, "Unsupported device\n");  in acpi_button_probe()
673 	button_type = id->driver_data;  in acpi_button_probe()
676 		return -ENODEV;  in acpi_button_probe()
680 		return -ENOMEM;  in acpi_button_probe()
684 	button->dev = dev;  in acpi_button_probe()
685 	button->adev = device;  in acpi_button_probe()
688 		return -ENOMEM;  in acpi_button_probe()
690 	button->input = input;  in acpi_button_probe()
691 	button->type = button_type;  in acpi_button_probe()
695 		button->class = ACPI_BUTTON_CLASS_LID;  in acpi_button_probe()
697 		input->name = ACPI_BUTTON_DEVICE_NAME_LID;  in acpi_button_probe()
699 		input->open = acpi_lid_input_open;  in acpi_button_probe()
708 		button->class = ACPI_BUTTON_CLASS_POWER;  in acpi_button_probe()
710 		input->name = ACPI_BUTTON_DEVICE_NAME_POWER;  in acpi_button_probe()
716 		button->class = ACPI_BUTTON_CLASS_SLEEP;  in acpi_button_probe()
718 		input->name = ACPI_BUTTON_DEVICE_NAME_SLEEP;  in acpi_button_probe()
723 		return dev_err_probe(dev, -ENODEV, "Unrecognized button type\n");  in acpi_button_probe()
726 	snprintf(button->phys, sizeof(button->phys), "%s/button/input0",  in acpi_button_probe()
729 	input->phys = button->phys;  in acpi_button_probe()
730 	input->id.bustype = BUS_HOST;  in acpi_button_probe()
731 	input->id.product = button_type;  in acpi_button_probe()
754 	pr_info("%s [%s]\n", input->name, acpi_device_bid(device));  in acpi_button_probe()
763 	if (button->type == ACPI_BUTTON_TYPE_LID)  in acpi_button_remove()
764 		acpi_lid_forget(button->adev);  in acpi_button_remove()
791 	buf[c - 1] = '\n'; /* Replace the final space with a newline */  in param_get_lid_init_state()
805 	if (lid_init_state == -1) {  in acpi_button_init()
808 			lid_init_state = (long)dmi_id->driver_data;  in acpi_button_init()
816 	 * capable kernels booted in non-ACPI mode if the return value of  in acpi_button_init()