106 lines
2.5 KiB
C
106 lines
2.5 KiB
C
|
/*
|
||
|
|
* 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 version 2
|
||
|
|
* 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 _LINUX_TEGRA_GTE_ENGINE_H
|
||
|
|
#define _LINUX_TEGRA_GTE_ENGINE_H
|
||
|
|
|
||
|
|
#include <linux/device.h>
|
||
|
|
|
||
|
|
struct tegra_gte_ev_desc {
|
||
|
|
int id;
|
||
|
|
int gid;
|
||
|
|
u32 ev_bit;
|
||
|
|
u32 slice;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* GTE hardware timestamping event details */
|
||
|
|
struct tegra_gte_ev_detail {
|
||
|
|
u64 ts_raw; /* raw counter value */
|
||
|
|
u64 ts_ns; /* counter value converted into nano seconds */
|
||
|
|
int dir; /* direction of the event */
|
||
|
|
};
|
||
|
|
|
||
|
|
#ifdef CONFIG_TEGRA_HTS_GTE
|
||
|
|
/*
|
||
|
|
* GTE event registration function
|
||
|
|
*
|
||
|
|
* Parameters:
|
||
|
|
*
|
||
|
|
* Input:
|
||
|
|
* @np: device node of the interested GTE device
|
||
|
|
* @ev_id: event id
|
||
|
|
*
|
||
|
|
* Returns:
|
||
|
|
* Returns ERR_PTR in case of failure or valid
|
||
|
|
* struct tegra_gte_ev_desc for success.
|
||
|
|
*
|
||
|
|
* Note: API is not stable and subject to change.
|
||
|
|
*/
|
||
|
|
struct tegra_gte_ev_desc *tegra_gte_register_event(struct device_node *np,
|
||
|
|
u32 ev_id);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* GTE event un-registration function
|
||
|
|
*
|
||
|
|
* Parameters:
|
||
|
|
*
|
||
|
|
* Input:
|
||
|
|
* @desc: This parameter should be the same as returned from register
|
||
|
|
*
|
||
|
|
* Returns:
|
||
|
|
* Returns 0 for success and any other value for the failure
|
||
|
|
*
|
||
|
|
* Note: API is not stable and subject to change.
|
||
|
|
*/
|
||
|
|
int tegra_gte_unregister_event(struct tegra_gte_ev_desc *desc);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* GTE event retrieval function
|
||
|
|
*
|
||
|
|
* Parameters:
|
||
|
|
*
|
||
|
|
* Input:
|
||
|
|
* @desc: This parameter should be the same as returned from register
|
||
|
|
*
|
||
|
|
* Output:
|
||
|
|
* @hts: hts event details
|
||
|
|
*
|
||
|
|
* Returns:
|
||
|
|
* Returns 0 for success and any other value for the failure
|
||
|
|
*
|
||
|
|
* Note: API is not stable and subject to change.
|
||
|
|
*/
|
||
|
|
int tegra_gte_retrieve_event(const struct tegra_gte_ev_desc *desc,
|
||
|
|
struct tegra_gte_ev_detail *hts);
|
||
|
|
|
||
|
|
#else /* ! CONFIG_TEGRA_HTS_GTE */
|
||
|
|
static inline struct tegra_gte_ev_desc *tegra_gte_register_event(
|
||
|
|
struct device_node *np, u32 ev_id)
|
||
|
|
{
|
||
|
|
return ERR_PTR(-ENOSYS);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int tegra_gte_unregister_event(struct tegra_gte_ev_desc *desc)
|
||
|
|
{
|
||
|
|
return -ENOSYS;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int tegra_gte_retrieve_event(const struct tegra_gte_ev_desc *desc,
|
||
|
|
struct tegra_gte_ev_detail *hts)
|
||
|
|
{
|
||
|
|
return -ENOSYS;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* ! CONFIG_TEGRA_HTS_GTE */
|
||
|
|
#endif
|