63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
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/*
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* drivers/video/tegra/host/nvhost_ktime.h
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*
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* Tegra Graphics Host Interrupt Management
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*
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* Copyright (c) 2017, 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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* version 2, 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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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __NVHOST_KTIME_H
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#define __NVHOST_KTIME_H
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enum nvhost_clock_id {
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NVHOST_CLOCK_UNKNOWN = 0,
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NVHOST_CLOCK_MONOTONIC,
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NVHOST_CLOCK_PTP
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};
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struct nvhost_timespec {
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struct timespec ts;
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enum nvhost_clock_id clock;
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};
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#ifdef CONFIG_TEGRA_PTP_NOTIFIER
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#include <linux/platform/tegra/ptp-notifier.h>
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#define nvhost_ktime_get_ts(nvts) \
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do { \
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u64 time_ns; \
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int err = get_ptp_hwtime(&time_ns); \
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if (err) { \
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ktime_get_ts(&(nvts)->ts); \
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(nvts)->clock = NVHOST_CLOCK_MONOTONIC; \
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} else { \
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(nvts)->ts = ns_to_timespec(time_ns); \
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(nvts)->clock = NVHOST_CLOCK_PTP; \
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} \
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} while (0)
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#else
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#include <linux/ktime.h>
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#define nvhost_ktime_get_ts(nvts) \
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do { \
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ktime_get_ts(&(nvts)->ts); \
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(nvts)->clock = NVHOST_CLOCK_MONOTONIC; \
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} while (0)
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#endif
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#endif
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