| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _GPIO_KEYS_H |
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| 3 | #define _GPIO_KEYS_H |
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| 4 | |
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| 5 | #include <linux/types.h> |
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| 6 | |
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| 7 | struct device; |
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| 8 | |
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| 9 | /** |
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| 10 | * struct gpio_keys_button - configuration parameters |
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| 11 | * @code: input event code (KEY_*, SW_*) |
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| 12 | * @gpio: %-1 if this key does not support gpio |
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| 13 | * @active_low: %true indicates that button is considered |
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| 14 | * depressed when gpio is low |
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| 15 | * @desc: label that will be attached to button's gpio |
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| 16 | * @type: input event type (%EV_KEY, %EV_SW, %EV_ABS) |
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| 17 | * @wakeup: configure the button as a wake-up source |
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| 18 | * @wakeup_event_action: event action to trigger wakeup |
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| 19 | * @debounce_interval: debounce ticks interval in msecs |
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| 20 | * @can_disable: %true indicates that userspace is allowed to |
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| 21 | * disable button via sysfs |
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| 22 | * @value: axis value for %EV_ABS |
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| 23 | * @irq: Irq number in case of interrupt keys |
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| 24 | */ |
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| 25 | struct gpio_keys_button { |
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| 26 | unsigned int code; |
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| 27 | int gpio; |
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| 28 | int active_low; |
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| 29 | const char *desc; |
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| 30 | unsigned int type; |
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| 31 | int wakeup; |
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| 32 | int wakeup_event_action; |
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| 33 | int debounce_interval; |
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| 34 | bool can_disable; |
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| 35 | int value; |
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| 36 | unsigned int irq; |
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| 37 | }; |
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| 38 | |
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| 39 | /** |
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| 40 | * struct gpio_keys_platform_data - platform data for gpio_keys driver |
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| 41 | * @buttons: pointer to array of &gpio_keys_button structures |
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| 42 | * describing buttons attached to the device |
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| 43 | * @nbuttons: number of elements in @buttons array |
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| 44 | * @poll_interval: polling interval in msecs - for polling driver only |
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| 45 | * @rep: enable input subsystem auto repeat |
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| 46 | * @enable: platform hook for enabling the device |
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| 47 | * @disable: platform hook for disabling the device |
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| 48 | * @name: input device name |
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| 49 | */ |
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| 50 | struct gpio_keys_platform_data { |
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| 51 | const struct gpio_keys_button *buttons; |
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| 52 | int nbuttons; |
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| 53 | unsigned int poll_interval; |
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| 54 | unsigned int rep:1; |
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| 55 | int (*enable)(struct device *dev); |
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| 56 | void (*disable)(struct device *dev); |
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| 57 | const char *name; |
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| 58 | }; |
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| 59 | |
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| 60 | #endif |
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| 61 | |
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