danh-arm
9 years ago
10 changed files with 106 additions and 13 deletions
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/*
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* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* Redistributions of source code must retain the above copyright notice, this |
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* list of conditions and the following disclaimer. |
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* |
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* Redistributions in binary form must reproduce the above copyright notice, |
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* this list of conditions and the following disclaimer in the documentation |
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* and/or other materials provided with the distribution. |
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* |
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* Neither the name of ARM nor the names of its contributors may be used |
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* to endorse or promote products derived from this software without specific |
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* prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <delay_timer.h> |
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#include <mmio.h> |
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#include <tegra_def.h> |
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static uint32_t tegra_timerus_get_value(void) |
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{ |
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return mmio_read_32(TEGRA_TMRUS_BASE); |
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} |
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static const timer_ops_t tegra_timer_ops = { |
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.get_timer_value = tegra_timerus_get_value, |
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.clk_mult = 1, |
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.clk_div = 1, |
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}; |
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/*
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* Initialise the on-chip free rolling us counter as the delay |
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* timer. |
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*/ |
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void tegra_delay_timer_init(void) |
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{ |
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timer_init(&tegra_timer_ops); |
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} |
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