Lines Matching +full:5 +full:- +full:button
1 // SPDX-License-Identifier: GPL-2.0-only
31 #include <dt-bindings/input/gpio-keys.h>
34 const struct gpio_keys_button *button; member
41 unsigned int release_delay; /* in msecs, for IRQ-only buttons */
45 unsigned int software_debounce; /* in msecs, for GPIO-driven buttons */
69 * There are 4 attributes under /sys/devices/platform/gpio-keys/
70 * keys [ro] - bitmap of keys (EV_KEY) which can be
72 * switches [ro] - bitmap of switches (EV_SW) which can be
74 * disabled_keys [rw] - bitmap of keys currently disabled
75 * disabled_switches [rw] - bitmap of switches currently disabled
81 * For example, if we have following switches set up as gpio-keys:
82 * SW_DOCK = 5
87 * 11-9,5
88 * Next we want to disable proximity (11) and dock (5), we write:
89 * 11,5
92 * 11,5
94 * 5
101 * get_n_events_by_type() - returns maximum number of events per @type
102 * @type: type of button (%EV_KEY, %EV_SW)
115 * get_bm_events_by_type() - returns bitmap of supported events per @type
117 * @type: type of button (%EV_KEY, %EV_SW)
127 return (type == EV_KEY) ? dev->keybit : dev->swbit; in get_bm_events_by_type()
134 if (!bdata->gpiod) in gpio_keys_quiesce_key()
135 hrtimer_cancel(&bdata->release_timer); in gpio_keys_quiesce_key()
136 else if (bdata->debounce_use_hrtimer) in gpio_keys_quiesce_key()
137 hrtimer_cancel(&bdata->debounce_timer); in gpio_keys_quiesce_key()
139 cancel_delayed_work_sync(&bdata->work); in gpio_keys_quiesce_key()
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
151 * Make sure that @bdata->disable_lock is locked when entering
157 if (!bdata->disabled) { in gpio_keys_disable_button()
161 disable_irq(bdata->irq); in gpio_keys_disable_button()
163 bdata->disabled = true; in gpio_keys_disable_button()
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.
173 * Make sure that @bdata->disable_lock is locked when entering
175 * to enable the same button at the same time.
179 if (bdata->disabled) { in gpio_keys_enable_button()
180 enable_irq(bdata->irq); in gpio_keys_enable_button()
181 bdata->disabled = false; in gpio_keys_enable_button()
186 * gpio_keys_attr_show_helper() - fill in stringified bitmap of buttons
189 * @type: button type (%EV_KEY, %EV_SW)
210 return -ENOMEM; in gpio_keys_attr_show_helper()
212 for (i = 0; i < ddata->pdata->nbuttons; i++) { in gpio_keys_attr_show_helper()
213 struct gpio_button_data *bdata = &ddata->data[i]; in gpio_keys_attr_show_helper()
215 if (bdata->button->type != type) in gpio_keys_attr_show_helper()
218 if (only_disabled && !bdata->disabled) in gpio_keys_attr_show_helper()
221 __set_bit(*bdata->code, bits); in gpio_keys_attr_show_helper()
224 ret = scnprintf(buf, PAGE_SIZE - 1, "%*pbl", n_events, bits); in gpio_keys_attr_show_helper()
234 * gpio_keys_attr_store_helper() - enable/disable buttons based on given bitmap
237 * @type: button type (%EV_KEY, %EV_SW)
247 const unsigned long *bitmap = get_bm_events_by_type(ddata->input, type); in gpio_keys_attr_store_helper()
254 return -ENOMEM; in gpio_keys_attr_store_helper()
262 error = -EINVAL; in gpio_keys_attr_store_helper()
266 for (i = 0; i < ddata->pdata->nbuttons; i++) { in gpio_keys_attr_store_helper()
267 struct gpio_button_data *bdata = &ddata->data[i]; in gpio_keys_attr_store_helper()
269 if (bdata->button->type != type) in gpio_keys_attr_store_helper()
272 if (test_bit(*bdata->code, bits) && in gpio_keys_attr_store_helper()
273 !bdata->button->can_disable) { in gpio_keys_attr_store_helper()
274 error = -EINVAL; in gpio_keys_attr_store_helper()
279 mutex_lock(&ddata->disable_lock); in gpio_keys_attr_store_helper()
281 for (i = 0; i < ddata->pdata->nbuttons; i++) { in gpio_keys_attr_store_helper()
282 struct gpio_button_data *bdata = &ddata->data[i]; in gpio_keys_attr_store_helper()
284 if (bdata->button->type != type) in gpio_keys_attr_store_helper()
287 if (test_bit(*bdata->code, bits)) in gpio_keys_attr_store_helper()
293 mutex_unlock(&ddata->disable_lock); in gpio_keys_attr_store_helper()
320 * /sys/devices/platform/gpio-keys/keys [ro]
321 * /sys/devices/platform/gpio-keys/switches [ro]
349 * /sys/devices/platform/gpio-keys/disabled_keys [rw]
350 * /sys/devices/platform/gpio-keys/disables_switches [rw]
370 const struct gpio_keys_button *button = bdata->button; in gpio_keys_gpio_report_event() local
371 struct input_dev *input = bdata->input; in gpio_keys_gpio_report_event()
372 unsigned int type = button->type ?: EV_KEY; in gpio_keys_gpio_report_event()
375 state = bdata->debounce_use_hrtimer ? in gpio_keys_gpio_report_event()
376 gpiod_get_value(bdata->gpiod) : in gpio_keys_gpio_report_event()
377 gpiod_get_value_cansleep(bdata->gpiod); in gpio_keys_gpio_report_event()
379 dev_err(input->dev.parent, in gpio_keys_gpio_report_event()
386 input_event(input, type, button->code, button->value); in gpio_keys_gpio_report_event()
388 input_event(input, type, *bdata->code, state); in gpio_keys_gpio_report_event()
395 input_sync(bdata->input); in gpio_keys_debounce_event()
397 if (bdata->button->wakeup) in gpio_keys_debounce_event()
398 pm_relax(bdata->input->dev.parent); in gpio_keys_debounce_event()
423 BUG_ON(irq != bdata->irq); in gpio_keys_gpio_isr()
425 if (bdata->button->wakeup) { in gpio_keys_gpio_isr()
426 const struct gpio_keys_button *button = bdata->button; in gpio_keys_gpio_isr() local
428 pm_stay_awake(bdata->input->dev.parent); in gpio_keys_gpio_isr()
429 if (bdata->suspended && in gpio_keys_gpio_isr()
430 (button->type == 0 || button->type == EV_KEY)) { in gpio_keys_gpio_isr()
436 input_report_key(bdata->input, button->code, 1); in gpio_keys_gpio_isr()
440 if (bdata->debounce_use_hrtimer) { in gpio_keys_gpio_isr()
441 hrtimer_start(&bdata->debounce_timer, in gpio_keys_gpio_isr()
442 ms_to_ktime(bdata->software_debounce), in gpio_keys_gpio_isr()
446 &bdata->work, in gpio_keys_gpio_isr()
447 msecs_to_jiffies(bdata->software_debounce)); in gpio_keys_gpio_isr()
458 struct input_dev *input = bdata->input; in gpio_keys_irq_timer()
460 if (bdata->key_pressed) { in gpio_keys_irq_timer()
461 input_report_key(input, *bdata->code, 0); in gpio_keys_irq_timer()
463 bdata->key_pressed = false; in gpio_keys_irq_timer()
472 struct input_dev *input = bdata->input; in gpio_keys_irq_isr()
475 BUG_ON(irq != bdata->irq); in gpio_keys_irq_isr()
477 spin_lock_irqsave(&bdata->lock, flags); in gpio_keys_irq_isr()
479 if (!bdata->key_pressed) { in gpio_keys_irq_isr()
480 if (bdata->button->wakeup) in gpio_keys_irq_isr()
481 pm_wakeup_event(bdata->input->dev.parent, 0); in gpio_keys_irq_isr()
483 input_report_key(input, *bdata->code, 1); in gpio_keys_irq_isr()
486 if (!bdata->release_delay) { in gpio_keys_irq_isr()
487 input_report_key(input, *bdata->code, 0); in gpio_keys_irq_isr()
492 bdata->key_pressed = true; in gpio_keys_irq_isr()
495 if (bdata->release_delay) in gpio_keys_irq_isr()
496 hrtimer_start(&bdata->release_timer, in gpio_keys_irq_isr()
497 ms_to_ktime(bdata->release_delay), in gpio_keys_irq_isr()
500 spin_unlock_irqrestore(&bdata->lock, flags); in gpio_keys_irq_isr()
507 const struct gpio_keys_button *button, in gpio_keys_setup_key() argument
511 const char *desc = button->desc ? button->desc : "gpio_keys"; in gpio_keys_setup_key()
512 struct device *dev = &pdev->dev; in gpio_keys_setup_key()
513 struct gpio_button_data *bdata = &ddata->data[idx]; in gpio_keys_setup_key()
520 bdata->input = input; in gpio_keys_setup_key()
521 bdata->button = button; in gpio_keys_setup_key()
522 spin_lock_init(&bdata->lock); in gpio_keys_setup_key()
525 bdata->gpiod = devm_fwnode_gpiod_get(dev, child, in gpio_keys_setup_key()
527 if (IS_ERR(bdata->gpiod)) { in gpio_keys_setup_key()
528 error = PTR_ERR(bdata->gpiod); in gpio_keys_setup_key()
529 if (error != -ENOENT) in gpio_keys_setup_key()
535 * purely interrupt-driven setup. in gpio_keys_setup_key()
537 bdata->gpiod = NULL; in gpio_keys_setup_key()
539 } else if (gpio_is_valid(button->gpio)) { in gpio_keys_setup_key()
546 if (button->active_low) in gpio_keys_setup_key()
549 error = devm_gpio_request_one(dev, button->gpio, flags, desc); in gpio_keys_setup_key()
552 button->gpio, error); in gpio_keys_setup_key()
556 bdata->gpiod = gpio_to_desc(button->gpio); in gpio_keys_setup_key()
557 if (!bdata->gpiod) in gpio_keys_setup_key()
558 return -EINVAL; in gpio_keys_setup_key()
561 if (bdata->gpiod) { in gpio_keys_setup_key()
562 bool active_low = gpiod_is_active_low(bdata->gpiod); in gpio_keys_setup_key()
564 if (button->debounce_interval) { in gpio_keys_setup_key()
565 error = gpiod_set_debounce(bdata->gpiod, in gpio_keys_setup_key()
566 button->debounce_interval * 1000); in gpio_keys_setup_key()
569 bdata->software_debounce = in gpio_keys_setup_key()
570 button->debounce_interval; in gpio_keys_setup_key()
577 bdata->debounce_use_hrtimer = in gpio_keys_setup_key()
578 !gpiod_cansleep(bdata->gpiod); in gpio_keys_setup_key()
584 * interrupt may be used as the main button interrupt for in gpio_keys_setup_key()
587 * for bdata->wakeirq setup. in gpio_keys_setup_key()
589 if (button->irq) { in gpio_keys_setup_key()
590 bdata->irq = button->irq; in gpio_keys_setup_key()
592 irq = gpiod_to_irq(bdata->gpiod); in gpio_keys_setup_key()
597 button->gpio); in gpio_keys_setup_key()
600 bdata->irq = irq; in gpio_keys_setup_key()
603 INIT_DELAYED_WORK(&bdata->work, gpio_keys_gpio_work_func); in gpio_keys_setup_key()
605 hrtimer_init(&bdata->debounce_timer, in gpio_keys_setup_key()
607 bdata->debounce_timer.function = gpio_keys_debounce_timer; in gpio_keys_setup_key()
612 switch (button->wakeup_event_action) { in gpio_keys_setup_key()
614 bdata->wakeup_trigger_type = active_low ? in gpio_keys_setup_key()
618 bdata->wakeup_trigger_type = active_low ? in gpio_keys_setup_key()
630 if (!button->irq) { in gpio_keys_setup_key()
631 dev_err(dev, "Found button without gpio or irq\n"); in gpio_keys_setup_key()
632 return -EINVAL; in gpio_keys_setup_key()
635 bdata->irq = button->irq; in gpio_keys_setup_key()
637 if (button->type && button->type != EV_KEY) { in gpio_keys_setup_key()
639 return -EINVAL; in gpio_keys_setup_key()
642 bdata->release_delay = button->debounce_interval; in gpio_keys_setup_key()
643 hrtimer_init(&bdata->release_timer, in gpio_keys_setup_key()
645 bdata->release_timer.function = gpio_keys_irq_timer; in gpio_keys_setup_key()
656 bdata->code = &ddata->keymap[idx]; in gpio_keys_setup_key()
657 *bdata->code = button->code; in gpio_keys_setup_key()
658 input_set_capability(input, button->type ?: EV_KEY, *bdata->code); in gpio_keys_setup_key()
672 * If platform has specified that the button can be disabled, in gpio_keys_setup_key()
675 if (!button->can_disable) in gpio_keys_setup_key()
678 error = devm_request_any_context_irq(dev, bdata->irq, isr, irqflags, in gpio_keys_setup_key()
682 bdata->irq, error); in gpio_keys_setup_key()
686 if (!button->wakeirq) in gpio_keys_setup_key()
692 return -ENOMEM; in gpio_keys_setup_key()
694 bdata->wakeirq = button->wakeirq; in gpio_keys_setup_key()
702 error = devm_request_any_context_irq(dev, bdata->wakeirq, isr, in gpio_keys_setup_key()
706 bdata->irq, error); in gpio_keys_setup_key()
712 * IRQF_SHARED was set based on !button->can_disable. in gpio_keys_setup_key()
714 disable_irq(bdata->wakeirq); in gpio_keys_setup_key()
721 struct input_dev *input = ddata->input; in gpio_keys_report_state()
724 for (i = 0; i < ddata->pdata->nbuttons; i++) { in gpio_keys_report_state()
725 struct gpio_button_data *bdata = &ddata->data[i]; in gpio_keys_report_state()
726 if (bdata->gpiod) in gpio_keys_report_state()
735 const struct gpio_keys_platform_data *pdata = ddata->pdata; in gpio_keys_open()
738 if (pdata->enable) { in gpio_keys_open()
739 error = pdata->enable(input->dev.parent); in gpio_keys_open()
753 const struct gpio_keys_platform_data *pdata = ddata->pdata; in gpio_keys_close()
755 if (pdata->disable) in gpio_keys_close()
756 pdata->disable(input->dev.parent); in gpio_keys_close()
770 struct gpio_keys_button *button; in gpio_keys_get_devtree_pdata() local
776 return ERR_PTR(-ENODEV); in gpio_keys_get_devtree_pdata()
779 sizeof(*pdata) + nbuttons * sizeof(*button), in gpio_keys_get_devtree_pdata()
782 return ERR_PTR(-ENOMEM); in gpio_keys_get_devtree_pdata()
784 button = (struct gpio_keys_button *)(pdata + 1); in gpio_keys_get_devtree_pdata()
786 pdata->buttons = button; in gpio_keys_get_devtree_pdata()
787 pdata->nbuttons = nbuttons; in gpio_keys_get_devtree_pdata()
789 pdata->rep = device_property_read_bool(dev, "autorepeat"); in gpio_keys_get_devtree_pdata()
791 device_property_read_string(dev, "label", &pdata->name); in gpio_keys_get_devtree_pdata()
797 button->irq = irq; in gpio_keys_get_devtree_pdata()
801 button->wakeirq = irq; in gpio_keys_get_devtree_pdata()
803 if (!button->irq && !button->wakeirq) in gpio_keys_get_devtree_pdata()
804 button->irq = in gpio_keys_get_devtree_pdata()
809 &button->code)) { in gpio_keys_get_devtree_pdata()
810 dev_err(dev, "Button without keycode\n"); in gpio_keys_get_devtree_pdata()
812 return ERR_PTR(-EINVAL); in gpio_keys_get_devtree_pdata()
815 fwnode_property_read_string(child, "label", &button->desc); in gpio_keys_get_devtree_pdata()
817 if (fwnode_property_read_u32(child, "linux,input-type", in gpio_keys_get_devtree_pdata()
818 &button->type)) in gpio_keys_get_devtree_pdata()
819 button->type = EV_KEY; in gpio_keys_get_devtree_pdata()
821 fwnode_property_read_u32(child, "linux,input-value", in gpio_keys_get_devtree_pdata()
822 (u32 *)&button->value); in gpio_keys_get_devtree_pdata()
824 button->wakeup = in gpio_keys_get_devtree_pdata()
825 fwnode_property_read_bool(child, "wakeup-source") || in gpio_keys_get_devtree_pdata()
827 fwnode_property_read_bool(child, "gpio-key,wakeup"); in gpio_keys_get_devtree_pdata()
829 fwnode_property_read_u32(child, "wakeup-event-action", in gpio_keys_get_devtree_pdata()
830 &button->wakeup_event_action); in gpio_keys_get_devtree_pdata()
832 button->can_disable = in gpio_keys_get_devtree_pdata()
833 fwnode_property_read_bool(child, "linux,can-disable"); in gpio_keys_get_devtree_pdata()
835 if (fwnode_property_read_u32(child, "debounce-interval", in gpio_keys_get_devtree_pdata()
836 &button->debounce_interval)) in gpio_keys_get_devtree_pdata()
837 button->debounce_interval = 5; in gpio_keys_get_devtree_pdata()
839 button++; in gpio_keys_get_devtree_pdata()
846 { .compatible = "gpio-keys", },
853 struct device *dev = &pdev->dev; in gpio_keys_probe()
867 ddata = devm_kzalloc(dev, struct_size(ddata, data, pdata->nbuttons), in gpio_keys_probe()
871 return -ENOMEM; in gpio_keys_probe()
874 ddata->keymap = devm_kcalloc(dev, in gpio_keys_probe()
875 pdata->nbuttons, sizeof(ddata->keymap[0]), in gpio_keys_probe()
877 if (!ddata->keymap) in gpio_keys_probe()
878 return -ENOMEM; in gpio_keys_probe()
883 return -ENOMEM; in gpio_keys_probe()
886 ddata->pdata = pdata; in gpio_keys_probe()
887 ddata->input = input; in gpio_keys_probe()
888 mutex_init(&ddata->disable_lock); in gpio_keys_probe()
893 input->name = pdata->name ? : pdev->name; in gpio_keys_probe()
894 input->phys = "gpio-keys/input0"; in gpio_keys_probe()
895 input->dev.parent = dev; in gpio_keys_probe()
896 input->open = gpio_keys_open; in gpio_keys_probe()
897 input->close = gpio_keys_close; in gpio_keys_probe()
899 input->id.bustype = BUS_HOST; in gpio_keys_probe()
900 input->id.vendor = 0x0001; in gpio_keys_probe()
901 input->id.product = 0x0001; in gpio_keys_probe()
902 input->id.version = 0x0100; in gpio_keys_probe()
904 input->keycode = ddata->keymap; in gpio_keys_probe()
905 input->keycodesize = sizeof(ddata->keymap[0]); in gpio_keys_probe()
906 input->keycodemax = pdata->nbuttons; in gpio_keys_probe()
909 if (pdata->rep) in gpio_keys_probe()
910 __set_bit(EV_REP, input->evbit); in gpio_keys_probe()
912 for (i = 0; i < pdata->nbuttons; i++) { in gpio_keys_probe()
913 const struct gpio_keys_button *button = &pdata->buttons[i]; in gpio_keys_probe() local
921 return -EINVAL; in gpio_keys_probe()
926 button, i, child); in gpio_keys_probe()
932 if (button->wakeup) in gpio_keys_probe()
955 error = enable_irq_wake(bdata->irq); in gpio_keys_button_enable_wakeup()
957 dev_err(bdata->input->dev.parent, in gpio_keys_button_enable_wakeup()
959 bdata->irq, error); in gpio_keys_button_enable_wakeup()
963 if (bdata->wakeup_trigger_type) { in gpio_keys_button_enable_wakeup()
964 error = irq_set_irq_type(bdata->irq, in gpio_keys_button_enable_wakeup()
965 bdata->wakeup_trigger_type); in gpio_keys_button_enable_wakeup()
967 dev_err(bdata->input->dev.parent, in gpio_keys_button_enable_wakeup()
969 bdata->wakeup_trigger_type, bdata->irq, error); in gpio_keys_button_enable_wakeup()
970 disable_irq_wake(bdata->irq); in gpio_keys_button_enable_wakeup()
975 if (bdata->wakeirq) { in gpio_keys_button_enable_wakeup()
976 enable_irq(bdata->wakeirq); in gpio_keys_button_enable_wakeup()
977 disable_irq(bdata->irq); in gpio_keys_button_enable_wakeup()
988 if (bdata->wakeirq) { in gpio_keys_button_disable_wakeup()
989 enable_irq(bdata->irq); in gpio_keys_button_disable_wakeup()
990 disable_irq(bdata->wakeirq); in gpio_keys_button_disable_wakeup()
994 * The trigger type is always both edges for gpio-based keys and we do in gpio_keys_button_disable_wakeup()
995 * not support changing wakeup trigger for interrupt-based keys. in gpio_keys_button_disable_wakeup()
997 if (bdata->wakeup_trigger_type) { in gpio_keys_button_disable_wakeup()
998 error = irq_set_irq_type(bdata->irq, IRQ_TYPE_EDGE_BOTH); in gpio_keys_button_disable_wakeup()
1000 dev_warn(bdata->input->dev.parent, in gpio_keys_button_disable_wakeup()
1002 bdata->irq, error); in gpio_keys_button_disable_wakeup()
1005 error = disable_irq_wake(bdata->irq); in gpio_keys_button_disable_wakeup()
1007 dev_warn(bdata->input->dev.parent, in gpio_keys_button_disable_wakeup()
1009 bdata->irq, error); in gpio_keys_button_disable_wakeup()
1019 for (i = 0; i < ddata->pdata->nbuttons; i++) { in gpio_keys_enable_wakeup()
1020 bdata = &ddata->data[i]; in gpio_keys_enable_wakeup()
1021 if (bdata->button->wakeup) { in gpio_keys_enable_wakeup()
1026 bdata->suspended = true; in gpio_keys_enable_wakeup()
1032 while (i--) { in gpio_keys_enable_wakeup()
1033 bdata = &ddata->data[i]; in gpio_keys_enable_wakeup()
1034 if (bdata->button->wakeup) in gpio_keys_enable_wakeup()
1036 bdata->suspended = false; in gpio_keys_enable_wakeup()
1048 for (i = 0; i < ddata->pdata->nbuttons; i++) { in gpio_keys_disable_wakeup()
1049 bdata = &ddata->data[i]; in gpio_keys_disable_wakeup()
1050 bdata->suspended = false; in gpio_keys_disable_wakeup()
1051 if (irqd_is_wakeup_set(irq_get_irq_data(bdata->irq))) in gpio_keys_disable_wakeup()
1059 struct input_dev *input = ddata->input; in gpio_keys_suspend()
1067 mutex_lock(&input->mutex); in gpio_keys_suspend()
1070 mutex_unlock(&input->mutex); in gpio_keys_suspend()
1079 struct input_dev *input = ddata->input; in gpio_keys_resume()
1085 mutex_lock(&input->mutex); in gpio_keys_resume()
1088 mutex_unlock(&input->mutex); in gpio_keys_resume()
1104 ret = gpio_keys_suspend(&pdev->dev); in gpio_keys_shutdown()
1106 dev_err(&pdev->dev, "failed to shutdown\n"); in gpio_keys_shutdown()
1113 .name = "gpio-keys",
1136 MODULE_ALIAS("platform:gpio-keys");