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"
31 #define ACPI_BUTTON_DEVICE_NAME_POWER	"Power Button"
35 #define ACPI_BUTTON_DEVICE_NAME_SLEEP	"Sleep Button"
57 MODULE_DESCRIPTION("ACPI Button Driver");
161 	.name = "button",
207 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_notify_state()  local
219 	    button->last_state != !!state)  in acpi_lid_notify_state()
224 	next_report = ktime_add(button->last_time,  in acpi_lid_notify_state()
226 	if (button->last_state == !!state &&  in acpi_lid_notify_state()
268 				input_report_switch(button->input,  in acpi_lid_notify_state()
270 				input_sync(button->input);  in acpi_lid_notify_state()
278 		input_report_switch(button->input, SW_LID, !state);  in acpi_lid_notify_state()
279 		input_sync(button->input);  in acpi_lid_notify_state()
280 		button->last_state = !!state;  in acpi_lid_notify_state()
281 		button->last_time = ktime_get();  in acpi_lid_notify_state()
301 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_add_fs()  local
306 	if (button->type != ACPI_BUTTON_TYPE_LID)  in acpi_button_add_fs()
314 	/* create /proc/acpi/button */  in acpi_button_add_fs()
319 	/* create /proc/acpi/button/lid */  in acpi_button_add_fs()
326 	/* create /proc/acpi/button/lid/LID/ */  in acpi_button_add_fs()
333 	/* create /proc/acpi/button/lid/LID/state */  in acpi_button_add_fs()
360 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_remove_fs()  local
362 	if (button->type != ACPI_BUTTON_TYPE_LID)  in acpi_button_remove_fs()
405 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_initialize_state()  local
419 	button->lid_state_initialized = true;  in acpi_lid_initialize_state()
425 	struct acpi_button *button;  in acpi_lid_notify()  local
433 	button = acpi_driver_data(device);  in acpi_lid_notify()
434 	if (!button->lid_state_initialized)  in acpi_lid_notify()
443 	struct acpi_button *button;  in acpi_button_notify()  local
460 	button = acpi_driver_data(device);  in acpi_button_notify()
461 	if (button->suspended || event == ACPI_BUTTON_NOTIFY_WAKE)  in acpi_button_notify()
464 	input = button->input;  in acpi_button_notify()
474 					event, ++button->pushed);  in acpi_button_notify()
492 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_suspend()  local
494 	button->suspended = true;  in acpi_button_suspend()
502 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_resume()  local
504 	button->suspended = false;  in acpi_button_resume()
505 	if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_resume()
506 		button->last_state = !!acpi_lid_evaluate_state(device);  in acpi_button_resume()
507 		button->last_time = ktime_get();  in acpi_button_resume()
511 	if (button->type == ACPI_BUTTON_TYPE_POWER) {  in acpi_button_resume()
512 		input = button->input;  in acpi_button_resume()
525 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_input_open()  local
527 	button->last_state = !!acpi_lid_evaluate_state(device);  in acpi_lid_input_open()
528 	button->last_time = ktime_get();  in acpi_lid_input_open()
537 	struct acpi_button *button;  in acpi_button_add()  local
548 	button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);  in acpi_button_add()
549 	if (!button)  in acpi_button_add()
552 	device->driver_data = button;  in acpi_button_add()
554 	button->input = input = input_allocate_device();  in acpi_button_add()
565 		button->type = ACPI_BUTTON_TYPE_POWER;  in acpi_button_add()
572 		button->type = ACPI_BUTTON_TYPE_SLEEP;  in acpi_button_add()
578 		button->type = ACPI_BUTTON_TYPE_LID;  in acpi_button_add()
597 	snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid);  in acpi_button_add()
600 	input->phys = button->phys;  in acpi_button_add()
602 	input->id.product = button->type;  in acpi_button_add()
605 	switch (button->type) {  in acpi_button_add()
647 	if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_add()
664 	kfree(button);  in acpi_button_add()
670 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_remove()  local
683 					   button->type == ACPI_BUTTON_TYPE_LID ?  in acpi_button_remove()
691 	input_unregister_device(button->input);  in acpi_button_remove()
692 	kfree(button);  in acpi_button_remove()