3dd4f375c5
Portions of rcc_clk_enable(), rcc_reset_dev(), and rcc_set_prescaler() are portable; break these into static inline helpers in rcc_private.h. These guts of these are portable, but the arrays of registers etc. are not. Also add an extern declaration for rcc_dev_table into rcc_private.h. This lets us put rcc_dev_clk() into a newly resurrected libmaple/rcc.c, since that's portable. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
68 lines
2.4 KiB
C
68 lines
2.4 KiB
C
/******************************************************************************
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* The MIT License
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*
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* Copyright (c) 2011 LeafLabs, LLC.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*****************************************************************************/
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/*
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* RCC private header.
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*/
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#ifndef _LIBMAPLE_PRIVATE_RCC_H_
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#define _LIBMAPLE_PRIVATE_RCC_H_
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#include <libmaple/bitband.h>
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struct rcc_dev_info {
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const rcc_clk_domain clk_domain;
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const uint8 line_num;
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};
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extern const struct rcc_dev_info rcc_dev_table[];
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static inline void rcc_do_clk_enable(__io uint32** enable_regs,
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rcc_clk_id id) {
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__io uint32 *enable_reg = enable_regs[rcc_dev_clk(id)];
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uint8 line_num = rcc_dev_table[id].line_num;
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bb_peri_set_bit(enable_reg, line_num, 1);
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}
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static inline void rcc_do_reset_dev(__io uint32** reset_regs,
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rcc_clk_id id) {
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__io uint32 *reset_reg = reset_regs[rcc_dev_clk(id)];
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uint8 line_num = rcc_dev_table[id].line_num;
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bb_peri_set_bit(reset_reg, line_num, 1);
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bb_peri_set_bit(reset_reg, line_num, 0);
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}
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static inline void rcc_do_set_prescaler(const uint32 *masks,
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rcc_prescaler prescaler,
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uint32 divider) {
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uint32 cfgr = RCC_BASE->CFGR;
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cfgr &= ~masks[prescaler];
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cfgr |= divider;
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RCC_BASE->CFGR = cfgr;
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}
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#endif
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