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71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2025 Aidan MacDonald
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef __CLOCK_STM32H7_H__
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#define __CLOCK_STM32H7_H__
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#include "system.h"
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#include <stdbool.h>
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#include <stddef.h>
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struct stm32_clock
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{
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uint32_t frequency;
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uint32_t en_reg;
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uint32_t en_bit;
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uint32_t lpen_reg;
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uint32_t lpen_bit;
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};
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/*
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* Enables a clock by setting its enable bits in the RCC.
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*/
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static inline void stm32_clock_enable(const struct stm32_clock *clk)
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{
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if (clk->en_reg)
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*(volatile uint32_t *)clk->en_reg |= clk->en_bit;
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if (clk->lpen_reg)
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*(volatile uint32_t *)clk->lpen_reg |= clk->lpen_bit;
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}
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/*
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* Disables a clock in the RCC.
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*/
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static inline void stm32_clock_disable(const struct stm32_clock *clk)
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{
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if (clk->en_reg)
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*(volatile uint32_t *)clk->en_reg &= ~clk->en_bit;
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if (clk->lpen_reg)
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*(volatile uint32_t *)clk->lpen_reg &= ~clk->lpen_bit;
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}
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/*
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* Get a clock's frequency in Hz.
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*/
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static inline uint32_t stm32_clock_get_frequency(const struct stm32_clock *clk)
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{
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return clk->frequency;
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}
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#endif /* __CLOCK_STM32H7_H__ */
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