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");
149 	.name = "button",
195 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_notify_state()  local
207 	    button->last_state != !!state)  in acpi_lid_notify_state()
212 	next_report = ktime_add(button->last_time,  in acpi_lid_notify_state()
214 	if (button->last_state == !!state &&  in acpi_lid_notify_state()
256 				input_report_switch(button->input,  in acpi_lid_notify_state()
258 				input_sync(button->input);  in acpi_lid_notify_state()
266 		input_report_switch(button->input, SW_LID, !state);  in acpi_lid_notify_state()
267 		input_sync(button->input);  in acpi_lid_notify_state()
268 		button->last_state = !!state;  in acpi_lid_notify_state()
269 		button->last_time = ktime_get();  in acpi_lid_notify_state()
289 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_add_fs()  local
294 	if (button->type != ACPI_BUTTON_TYPE_LID)  in acpi_button_add_fs()
302 	/* create /proc/acpi/button */  in acpi_button_add_fs()
307 	/* create /proc/acpi/button/lid */  in acpi_button_add_fs()
314 	/* create /proc/acpi/button/lid/LID/ */  in acpi_button_add_fs()
321 	/* create /proc/acpi/button/lid/LID/state */  in acpi_button_add_fs()
348 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_remove_fs()  local
350 	if (button->type != ACPI_BUTTON_TYPE_LID)  in acpi_button_remove_fs()
393 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_initialize_state()  local
407 	button->lid_state_initialized = true;  in acpi_lid_initialize_state()
413 	struct acpi_button *button;  in acpi_lid_notify()  local
421 	button = acpi_driver_data(device);  in acpi_lid_notify()
422 	if (!button->lid_state_initialized)  in acpi_lid_notify()
431 	struct acpi_button *button;  in acpi_button_notify()  local
443 	button = acpi_driver_data(device);  in acpi_button_notify()
444 	if (button->suspended)  in acpi_button_notify()
447 	input = button->input;  in acpi_button_notify()
457 					event, ++button->pushed);  in acpi_button_notify()
475 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_suspend()  local
477 	button->suspended = true;  in acpi_button_suspend()
485 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_resume()  local
487 	button->suspended = false;  in acpi_button_resume()
488 	if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_resume()
489 		button->last_state = !!acpi_lid_evaluate_state(device);  in acpi_button_resume()
490 		button->last_time = ktime_get();  in acpi_button_resume()
494 	if (button->type == ACPI_BUTTON_TYPE_POWER) {  in acpi_button_resume()
495 		input = button->input;  in acpi_button_resume()
508 	struct acpi_button *button = acpi_driver_data(device);  in acpi_lid_input_open()  local
510 	button->last_state = !!acpi_lid_evaluate_state(device);  in acpi_lid_input_open()
511 	button->last_time = ktime_get();  in acpi_lid_input_open()
520 	struct acpi_button *button;  in acpi_button_add()  local
531 	button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);  in acpi_button_add()
532 	if (!button)  in acpi_button_add()
535 	device->driver_data = button;  in acpi_button_add()
537 	button->input = input = input_allocate_device();  in acpi_button_add()
548 		button->type = ACPI_BUTTON_TYPE_POWER;  in acpi_button_add()
555 		button->type = ACPI_BUTTON_TYPE_SLEEP;  in acpi_button_add()
561 		button->type = ACPI_BUTTON_TYPE_LID;  in acpi_button_add()
580 	snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid);  in acpi_button_add()
583 	input->phys = button->phys;  in acpi_button_add()
585 	input->id.product = button->type;  in acpi_button_add()
588 	switch (button->type) {  in acpi_button_add()
630 	if (button->type == ACPI_BUTTON_TYPE_LID) {  in acpi_button_add()
647 	kfree(button);  in acpi_button_add()
653 	struct acpi_button *button = acpi_driver_data(device);  in acpi_button_remove()  local
666 					   button->type == ACPI_BUTTON_TYPE_LID ?  in acpi_button_remove()
674 	input_unregister_device(button->input);  in acpi_button_remove()
675 	kfree(button);  in acpi_button_remove()