input/keyboard/gpio_keys.c

34 	const struct gpio_keys_button *button;
102  * @type: type of button (%EV_KEY, %EV_SW)
117  * @type: type of button (%EV_KEY, %EV_SW)
143  * gpio_keys_disable_button() - disables given GPIO button
144  * @bdata: button data for button to be disabled
146  * Disables button pointed by @bdata. This is done by masking
147  * IRQ line. After this function is called, button won't generate
168  * gpio_keys_enable_button() - enables given GPIO button
169  * @bdata: button data for button to be disabled
171  * Enables given button pointed by @bdata.
175  * to enable the same button at the same time.
189  * @type: button type (%EV_KEY, %EV_SW)
215 		if (bdata->button->type != type)
237  * @type: button type (%EV_KEY, %EV_SW)
266 		if (bdata->button->type != type)
270 		    !bdata->button->can_disable) {
280 		if (bdata->button->type != type)
362 	const struct gpio_keys_button *button = bdata->button;
364 	unsigned int type = button->type ?: EV_KEY;
378 			input_event(input, type, button->code, button->value);
389 	if (bdata->button->wakeup)
417 	if (bdata->button->wakeup) {
418 		const struct gpio_keys_button *button = bdata->button;
422 		    (button->type == 0 || button->type == EV_KEY)) {
428 			input_report_key(bdata->input, button->code, 1);
473 		if (bdata->button->wakeup)
499 				const struct gpio_keys_button *button,
503 	const char *desc = button->desc ? button->desc : "gpio_keys";
513 	bdata->button = button;
531 	} else if (gpio_is_valid(button->gpio)) {
536 		error = devm_gpio_request_one(dev, button->gpio, GPIOF_IN, desc);
539 				button->gpio, error);
543 		bdata->gpiod = gpio_to_desc(button->gpio);
547 		if (button->active_low ^ gpiod_is_active_low(bdata->gpiod))
554 		if (button->debounce_interval) {
556 					button->debounce_interval * 1000);
560 						button->debounce_interval;
574 		 * interrupt may be used as the main button interrupt for
579 		if (button->irq) {
580 			bdata->irq = button->irq;
587 					      button->gpio);
601 		switch (button->wakeup_event_action) {
619 		if (!button->irq) {
620 			dev_err(dev, "Found button without gpio or irq\n");
624 		bdata->irq = button->irq;
626 		if (button->type && button->type != EV_KEY) {
631 		bdata->release_delay = button->debounce_interval;
645 	*bdata->code = button->code;
646 	input_set_capability(input, button->type ?: EV_KEY, *bdata->code);
660 	 * If platform has specified that the button can be disabled,
663 	if (!button->can_disable)
674 	if (!button->wakeirq)
682 	bdata->wakeirq = button->wakeirq;
700 	 * IRQF_SHARED was set based on !button->can_disable.
758 	struct gpio_keys_button *button;
766 			     sizeof(*pdata) + nbuttons * sizeof(*button),
771 	button = (struct gpio_keys_button *)(pdata + 1);
773 	pdata->buttons = button;
784 				button->irq = irq;
788 				button->wakeirq = irq;
790 			if (!button->irq && !button->wakeirq)
791 				button->irq =
796 					     &button->code)) {
801 		fwnode_property_read_string(child, "label", &button->desc);
804 					     &button->type))
805 			button->type = EV_KEY;
808 					 (u32 *)&button->value);
810 		button->wakeup =
816 					 &button->wakeup_event_action);
818 		button->can_disable =
822 					 &button->debounce_interval))
823 			button->debounce_interval = 5;
825 		button++;
899 		const struct gpio_keys_button *button = &pdata->buttons[i];
912 					    button, i, child);
918 		if (button->wakeup)
1007 		if (bdata->button->wakeup) {
1020 		if (bdata->button->wakeup)