2  *  button.c - ACPI Button Driver
22 #define pr_fmt(fmt) "ACPI: button: " fmt
35 #include <acpi/button.h>
39 #define ACPI_BUTTON_CLASS		"button"
47 #define ACPI_BUTTON_DEVICE_NAME_POWER	"Power Button"
52 #define ACPI_BUTTON_DEVICE_NAME_SLEEP	"Sleep Button"
65 ACPI_MODULE_NAME("button");
68 MODULE_DESCRIPTION("ACPI Button Driver");
133 	.name = "button",
184 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_notify_state()  local
197 	    button->last_state != !!state)  in acpi_lid_notify_state()
202 	next_report = ktime_add(button->last_time,  in acpi_lid_notify_state()
204 	if (button->last_state == !!state &&  in acpi_lid_notify_state()
246 				input_report_switch(button->input,  in acpi_lid_notify_state()
248 				input_sync(button->input);  in acpi_lid_notify_state()
256 		input_report_switch(button->input, SW_LID, !state);  in acpi_lid_notify_state()
257 		input_sync(button->input);  in acpi_lid_notify_state()
258 		button->last_state = !!state;  in acpi_lid_notify_state()
259 		button->last_time = ktime_get();  in acpi_lid_notify_state()
290 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_add_fs()  local
295 	if (button->type != ACPI_BUTTON_TYPE_LID)  in acpi_button_add_fs()
303 	/* create /proc/acpi/button */  in acpi_button_add_fs()
308 	/* create /proc/acpi/button/lid */  in acpi_button_add_fs()
315 	/* create /proc/acpi/button/lid/LID/ */  in acpi_button_add_fs()
322 	/* create /proc/acpi/button/lid/LID/state */  in acpi_button_add_fs()
349 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_remove_fs()  local
351 	if (button->type != ACPI_BUTTON_TYPE_LID)  in acpi_button_remove_fs()
408 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_initialize_state()  local
422 	button->lid_state_initialized = true;  in acpi_lid_initialize_state()
427 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_notify()  local
435 		input = button->input;  in acpi_button_notify()
436 		if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_notify()
437 			if (button->lid_state_initialized)  in acpi_button_notify()
443 			if (button->suspended)  in acpi_button_notify()
456 					event, ++button->pushed);  in acpi_button_notify()
470 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_suspend()  local
472 	button->suspended = true;  in acpi_button_suspend()
479 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_resume()  local
481 	button->suspended = false;  in acpi_button_resume()
482 	if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_resume()
483 		button->last_state = !!acpi_lid_evaluate_state(device);  in acpi_button_resume()
484 		button->last_time = ktime_get();  in acpi_button_resume()
494 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_input_open()  local
496 	button->last_state = !!acpi_lid_evaluate_state(device);  in acpi_lid_input_open()
497 	button->last_time = ktime_get();  in acpi_lid_input_open()
505 	struct acpi_button *button;  in acpi_button_add()  local
514 	button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);  in acpi_button_add()
515 	if (!button)  in acpi_button_add()
518 	device->driver_data = button;  in acpi_button_add()
520 	button->input = input = input_allocate_device();  in acpi_button_add()
531 		button->type = ACPI_BUTTON_TYPE_POWER;  in acpi_button_add()
537 		button->type = ACPI_BUTTON_TYPE_SLEEP;  in acpi_button_add()
542 		button->type = ACPI_BUTTON_TYPE_LID;  in acpi_button_add()
557 	snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid);  in acpi_button_add()
560 	input->phys = button->phys;  in acpi_button_add()
562 	input->id.product = button->type;  in acpi_button_add()
565 	switch (button->type) {  in acpi_button_add()
583 	if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_add()
600 	kfree(button);  in acpi_button_add()
606 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_remove()  local
609 	input_unregister_device(button->input);  in acpi_button_remove()
610 	kfree(button);  in acpi_button_remove()