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/***************************************************************
*
* OpenPICC - clock switch driver
*
* Copyright 2008 Henryk Plötz <henryk@ploetzli.ch>
*
***************************************************************
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <FreeRTOS.h>
#include <openpicc.h>
#include "clock_switch.h"
static int initialized = 0;
void clock_switch(enum clock_source clock)
{
if(!OPENPICC->features.clock_switching) return;
if(!initialized)
AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, OPENPICC->CLOCK_SWITCH);
switch(clock) {
case CLOCK_SELECT_PLL:
AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, OPENPICC->CLOCK_SWITCH);
break;
case CLOCK_SELECT_CARRIER:
AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPICC->CLOCK_SWITCH);
break;
}
}
void clock_switch_init(void)
{
if(!OPENPICC->features.clock_switching) return;
AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, OPENPICC->CLOCK_SWITCH);
clock_switch(OPENPICC->default_clock);
initialized = 1;
}
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