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/*
* This file is part of the coreboot project.
*
* Copyright 2018 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __DRIVERS_GENERIC_GPIO_KEYS_H__
#define __DRIVERS_GENERIC_GPIO_KEYS_H__
#include <arch/acpi_device.h>
#include <stdint.h>
/* Linux input type */
enum {
/* Switch event */
EV_SW = 0x5,
};
/* Switch events type (Linux code emitted for EV_SW) */
enum {
SW_PEN_INSERTED = 0xf,
};
/* Trigger for wakeup event action */
enum {
EV_ACT_ANY,
EV_ACT_ASSERTED,
EV_ACT_DEASSERTED,
};
/* Details of the child node defining key */
struct key_info {
/* Device name of the child node - Mandatory */
const char *dev_name;
/* Keycode emitted for this key - Mandatory */
uint32_t linux_code;
/*
* Event type generated for this key
* See EV_* above.
*/
uint32_t linux_input_type;
/* Descriptive name of the key */
const char *label;
/* Wake GPE */
unsigned int wake;
/* Trigger for Wakeup Event Action as defined in EV_ACT_* enum */
unsigned int wakeup_event_action;
/* Can this key be disabled? */
bool can_be_disabled;
/* Debounce interval time in milliseconds */
uint32_t debounce_interval;
};
struct drivers_generic_gpio_keys_config {
/* Device name of the parent gpio-keys node */
const char *name;
/* GPIO line providing the key - Mandatory */
struct acpi_gpio gpio;
/* Is this a polled GPIO button? - Optional */
bool is_polled;
/* Poll inverval - Mandatory only if GPIO is polled. */
uint32_t poll_interval;
/* Details about the key - Mandatory */
struct key_info key;
};
#endif /* __DRIVERS_GENERIC_GPIO_KEYS_H__ */
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