forked from len0rd/rockbox
cd630c9e0a
Make PNX0101-specific system.c and crt0.S. Add new register names from LPC2880 user manual. Add support for timer. Enable CPU frequency changing. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12904 a1c6a512-1295-4272-9138-f99709370657
50 lines
1.6 KiB
C
50 lines
1.6 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) 2005 Jens Arnold
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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 __TIMER_H__
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#define __TIMER_H__
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#include <stdbool.h>
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#include "config.h"
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#ifndef SIMULATOR
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#if defined(CPU_PP)
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/* Portalplayer chips use a microsecond timer. */
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#define TIMER_FREQ 1000000
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#elif defined(CPU_COLDFIRE)
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/* timer is based on busclk == cpuclk/2 */
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#define TIMER_FREQ (CPU_FREQ/2)
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#elif CONFIG_CPU == PNX0101
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#define TIMER_FREQ 3000000
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#else
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#define TIMER_FREQ CPU_FREQ
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#endif
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bool timer_register(int reg_prio, void (*unregister_callback)(void),
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long cycles, int int_prio, void (*timer_callback)(void));
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bool timer_set_period(long cycles);
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#ifdef CPU_COLDFIRE
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void timers_adjust_prescale(int multiplier, bool enable_irq);
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#endif
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void timer_unregister(void);
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#endif /* !SIMULATOR */
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#endif /* __TIMER_H__ */
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