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git://nv-tegra.nvidia.com/linux-nv-oot.git
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e7c8a70f65
The CL adds GTE driver support in OOT. The driver is copied from nvidia directory in dev-main with below changes. - Added removable module support This driver as module is needed as per the oot development requirement. Bug 3583612 Change-Id: I2772078fb96e1b172e45befe643b4c7c569866d9 Signed-off-by: Dipen Patel <dipenp@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2706260 Reviewed-by: Bitan Biswas <bbiswas@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
/*
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* Copyright (c) 2020-2022, NVIDIA CORPORATION & AFFILIATES.All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#ifndef _TEGRA_GTE_H
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#define _TEGRA_GTE_H
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#include <linux/device.h>
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struct tegra_gte_ev_desc {
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int id;
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u32 ev_bit;
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u32 slice;
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};
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/* GTE hardware timestamping event details */
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struct tegra_gte_ev_detail {
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u64 ts_raw; /* raw counter value */
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u64 ts_ns; /* counter value converted into nano seconds */
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int dir; /* direction of the event */
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};
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/*
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* GTE event registration function
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*
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* Parameters:
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*
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* Input:
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* @np: device node of the interested GTE device
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* @ev_id: event id
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*
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* Returns:
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* Returns ERR_PTR in case of failure or valid
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* struct tegra_gte_ev_desc for success.
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*
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* Note: API is not stable and subject to change.
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*/
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struct tegra_gte_ev_desc *tegra_gte_register_event(struct device_node *np,
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u32 ev_id);
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/*
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* GTE event un-registration function
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*
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* Parameters:
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*
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* Input:
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* @desc: This parameter should be the same as returned from register
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*
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* Returns:
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* Returns 0 for success and any other value for the failure
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*
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* Note: API is not stable and subject to change.
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*/
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int tegra_gte_unregister_event(struct tegra_gte_ev_desc *desc);
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/*
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* GTE event retrieval function
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*
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* Parameters:
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*
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* Input:
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* @desc: This parameter should be the same as returned from register
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*
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* Output:
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* @hts: hts event details
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*
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* Returns:
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* Returns 0 for success and any other value for the failure
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*
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* Note: API is not stable and subject to change.
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*/
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int tegra_gte_retrieve_event(const struct tegra_gte_ev_desc *desc,
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struct tegra_gte_ev_detail *hts);
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#endif
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