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/*
* Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 __UAPI_TEGRA_GTE_H
#define __UAPI_TEGRA_GTE_H
#include <linux/ioctl.h>
#include <linux/types.h>
/**
* GPIO event types
*/
#define TEGRA_GTE_EVENT_RISING_EDGE 0x1
#define TEGRA_GTE_EVENT_FALLING_EDGE 0x2
#define TEGRA_GTE_EVENT_REQ_BOTH_EDGES (TEGRA_GTE_EVENT_RISING_EDGE | \
TEGRA_GTE_EVENT_FALLING_EDGE)
/**
* Information about a GPIO event request
* @global_gpio_pin: global gpio pin number to monitor event
* @eventflags: desired flags for the desired GPIO event line, such as
* EVENT_RISING_EDGE or EVENT_FALLING_EDGE
* @fd: if successful this field will contain a valid anonymous file handle
* after a HTS_CREATE_GPIO_EVENT_IOCTL operation, zero or negative value
* means error
*/
struct tegra_gte_hts_event_req {
__u32 global_gpio_pin;
__u32 eventflags;
int fd;
};
/**
* struct hts_event_data - event data
* @timestamp: hardware timestamp in nanosecond
* @dir: direction of the event
*/
struct tegra_gte_hts_event_data {
__u64 timestamp;
int dir;
};
/**
* Event request IOCTL command
*/
#define TEGRA_GTE_HTS_CREATE_GPIO_EV_IOCTL \
_IOWR(0xB5, 0x0, \
struct tegra_gte_hts_event_req)
#endif
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