3  *  button.c - ACPI Button Driver
9 #define pr_fmt(fmt) "ACPI: button: " fmt
22 #include <acpi/button.h>
26 #define ACPI_BUTTON_CLASS		"button"
32 #define ACPI_BUTTON_DEVICE_NAME_POWER	"Power Button"
36 #define ACPI_BUTTON_DEVICE_NAME_SLEEP	"Sleep Button"
58 ACPI_MODULE_NAME("button");
61 MODULE_DESCRIPTION("ACPI Button Driver");
144 	.name = "button",
194 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_notify_state()  local
206 	    button->last_state != !!state)  in acpi_lid_notify_state()
211 	next_report = ktime_add(button->last_time,  in acpi_lid_notify_state()
213 	if (button->last_state == !!state &&  in acpi_lid_notify_state()
255 				input_report_switch(button->input,  in acpi_lid_notify_state()
257 				input_sync(button->input);  in acpi_lid_notify_state()
265 		input_report_switch(button->input, SW_LID, !state);  in acpi_lid_notify_state()
266 		input_sync(button->input);  in acpi_lid_notify_state()
267 		button->last_state = !!state;  in acpi_lid_notify_state()
268 		button->last_time = ktime_get();  in acpi_lid_notify_state()
288 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_add_fs()  local
293 	if (button->type != ACPI_BUTTON_TYPE_LID)  in acpi_button_add_fs()
301 	/* create /proc/acpi/button */  in acpi_button_add_fs()
306 	/* create /proc/acpi/button/lid */  in acpi_button_add_fs()
313 	/* create /proc/acpi/button/lid/LID/ */  in acpi_button_add_fs()
320 	/* create /proc/acpi/button/lid/LID/state */  in acpi_button_add_fs()
347 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_remove_fs()  local
349 	if (button->type != ACPI_BUTTON_TYPE_LID)  in acpi_button_remove_fs()
394 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_initialize_state()  local
408 	button->lid_state_initialized = true;  in acpi_lid_initialize_state()
413 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_notify()  local
421 		input = button->input;  in acpi_button_notify()
422 		if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_notify()
423 			if (button->lid_state_initialized)  in acpi_button_notify()
429 			if (button->suspended)  in acpi_button_notify()
442 					event, ++button->pushed);  in acpi_button_notify()
456 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_suspend()  local
458 	button->suspended = true;  in acpi_button_suspend()
465 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_resume()  local
467 	button->suspended = false;  in acpi_button_resume()
468 	if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_resume()
469 		button->last_state = !!acpi_lid_evaluate_state(device);  in acpi_button_resume()
470 		button->last_time = ktime_get();  in acpi_button_resume()
480 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_input_open()  local
482 	button->last_state = !!acpi_lid_evaluate_state(device);  in acpi_lid_input_open()
483 	button->last_time = ktime_get();  in acpi_lid_input_open()
491 	struct acpi_button *button;  in acpi_button_add()  local
501 	button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);  in acpi_button_add()
502 	if (!button)  in acpi_button_add()
505 	device->driver_data = button;  in acpi_button_add()
507 	button->input = input = input_allocate_device();  in acpi_button_add()
518 		button->type = ACPI_BUTTON_TYPE_POWER;  in acpi_button_add()
524 		button->type = ACPI_BUTTON_TYPE_SLEEP;  in acpi_button_add()
529 		button->type = ACPI_BUTTON_TYPE_LID;  in acpi_button_add()
544 	snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid);  in acpi_button_add()
547 	input->phys = button->phys;  in acpi_button_add()
549 	input->id.product = button->type;  in acpi_button_add()
552 	switch (button->type) {  in acpi_button_add()
570 	if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_add()
587 	kfree(button);  in acpi_button_add()
593 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_remove()  local
596 	input_unregister_device(button->input);  in acpi_button_remove()
597 	kfree(button);  in acpi_button_remove()