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cc58b2d0f5
Add a delay timer driver for the ARM SP804 dual timer. This driver only uses the first timer, called timer 1 in the SP804 Technical Reference Manual (ARM DDI 0271D). To use this driver, the BSP must provide three constants: * The base address of the SP804 dual timer * The clock multiplier * The clock divider The BSP is responsible for calling sp804_timer_init(). The SP804 driver instantiates a constant timer_ops_t and calls the generic timer_init(). Change-Id: I49ba0a52bdf6072f403d1d0a20e305151d4bc086 Co-authored-by: Dan Handley <dan.handley@arm.com>
48 lines
1.9 KiB
C
48 lines
1.9 KiB
C
/*
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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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#ifndef __SP804_DELAY_TIMER_H__
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#define __SP804_DELAY_TIMER_H__
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#include <delay_timer.h>
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#include <stdint.h>
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uint32_t sp804_get_timer_value(void);
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void sp804_timer_ops_init(uintptr_t base_addr, const timer_ops_t *ops);
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#define sp804_timer_init(base_addr, clk_mult, clk_div) \
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sp804_timer_ops_init((base_addr), &(const timer_ops_t) \
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{ sp804_get_timer_value, (clk_mult), (clk_div) })
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#endif /* __SP804_DELAY_TIMER_H__ */
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