3  *  button.c - ACPI Button Driver
9 #define pr_fmt(fmt) "ACPI: button: " fmt
22 #include <acpi/button.h>
24 #define ACPI_BUTTON_CLASS		"button"
30 #define ACPI_BUTTON_DEVICE_NAME_POWER	"Power Button"
34 #define ACPI_BUTTON_DEVICE_NAME_SLEEP	"Sleep Button"
56 MODULE_DESCRIPTION("ACPI Button Driver");
141 	.name = "button",
188 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_notify_state()  local
200 	    button->last_state != !!state)  in acpi_lid_notify_state()
205 	next_report = ktime_add(button->last_time,  in acpi_lid_notify_state()
207 	if (button->last_state == !!state &&  in acpi_lid_notify_state()
249 				input_report_switch(button->input,  in acpi_lid_notify_state()
251 				input_sync(button->input);  in acpi_lid_notify_state()
259 		input_report_switch(button->input, SW_LID, !state);  in acpi_lid_notify_state()
260 		input_sync(button->input);  in acpi_lid_notify_state()
261 		button->last_state = !!state;  in acpi_lid_notify_state()
262 		button->last_time = ktime_get();  in acpi_lid_notify_state()
282 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_add_fs()  local
287 	if (button->type != ACPI_BUTTON_TYPE_LID)  in acpi_button_add_fs()
295 	/* create /proc/acpi/button */  in acpi_button_add_fs()
300 	/* create /proc/acpi/button/lid */  in acpi_button_add_fs()
307 	/* create /proc/acpi/button/lid/LID/ */  in acpi_button_add_fs()
314 	/* create /proc/acpi/button/lid/LID/state */  in acpi_button_add_fs()
341 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_remove_fs()  local
343 	if (button->type != ACPI_BUTTON_TYPE_LID)  in acpi_button_remove_fs()
386 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_initialize_state()  local
400 	button->lid_state_initialized = true;  in acpi_lid_initialize_state()
405 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_notify()  local
413 		input = button->input;  in acpi_button_notify()
414 		if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_notify()
415 			if (button->lid_state_initialized)  in acpi_button_notify()
421 			if (button->suspended)  in acpi_button_notify()
434 					event, ++button->pushed);  in acpi_button_notify()
448 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_suspend()  local
450 	button->suspended = true;  in acpi_button_suspend()
457 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_resume()  local
459 	button->suspended = false;  in acpi_button_resume()
460 	if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_resume()
461 		button->last_state = !!acpi_lid_evaluate_state(device);  in acpi_button_resume()
462 		button->last_time = ktime_get();  in acpi_button_resume()
472 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_input_open()  local
474 	button->last_state = !!acpi_lid_evaluate_state(device);  in acpi_lid_input_open()
475 	button->last_time = ktime_get();  in acpi_lid_input_open()
483 	struct acpi_button *button;  in acpi_button_add()  local
493 	button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);  in acpi_button_add()
494 	if (!button)  in acpi_button_add()
497 	device->driver_data = button;  in acpi_button_add()
499 	button->input = input = input_allocate_device();  in acpi_button_add()
510 		button->type = ACPI_BUTTON_TYPE_POWER;  in acpi_button_add()
516 		button->type = ACPI_BUTTON_TYPE_SLEEP;  in acpi_button_add()
521 		button->type = ACPI_BUTTON_TYPE_LID;  in acpi_button_add()
536 	snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid);  in acpi_button_add()
539 	input->phys = button->phys;  in acpi_button_add()
541 	input->id.product = button->type;  in acpi_button_add()
544 	switch (button->type) {  in acpi_button_add()
562 	if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_add()
579 	kfree(button);  in acpi_button_add()
585 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_remove()  local
588 	input_unregister_device(button->input);  in acpi_button_remove()
589 	kfree(button);  in acpi_button_remove()