62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/*
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* Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef __UAPI_TEGRA_GTE_H
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#define __UAPI_TEGRA_GTE_H
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#include <linux/ioctl.h>
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#include <linux/types.h>
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/**
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* GPIO event types
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*/
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#define TEGRA_GTE_EVENT_RISING_EDGE 0x1
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#define TEGRA_GTE_EVENT_FALLING_EDGE 0x2
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#define TEGRA_GTE_EVENT_REQ_BOTH_EDGES (TEGRA_GTE_EVENT_RISING_EDGE | \
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TEGRA_GTE_EVENT_FALLING_EDGE)
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/**
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* Information about a GPIO event request
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* @global_gpio_pin: global gpio pin number to monitor event
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* @eventflags: desired flags for the desired GPIO event line, such as
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* EVENT_RISING_EDGE or EVENT_FALLING_EDGE
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* @fd: if successful this field will contain a valid anonymous file handle
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* after a HTS_CREATE_GPIO_EVENT_IOCTL operation, zero or negative value
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* means error
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*/
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struct tegra_gte_hts_event_req {
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__u32 global_gpio_pin;
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__u32 eventflags;
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int fd;
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};
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/**
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* struct hts_event_data - event data
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* @timestamp: hardware timestamp in nanosecond
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* @dir: direction of the event
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*/
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struct tegra_gte_hts_event_data {
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__u64 timestamp;
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int dir;
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};
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/**
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* Event request IOCTL command
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*/
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#define TEGRA_GTE_HTS_CREATE_GPIO_EV_IOCTL \
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_IOWR(0xB5, 0x0, \
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struct tegra_gte_hts_event_req)
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#endif
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