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/* PLL routines for OpenPICC
* (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <sys/types.h>
#include <lib_AT91SAM7.h>
#include <os/pio_irq.h>
#include <os/dbgu.h>
#include <os/led.h>
#include "../openpcd.h"
void pll_inhibit(int inhibit)
{
if (inhibit)
AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPICC_PIO_PLL_INHIBIT);
else
AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, OPENPICC_PIO_PLL_INHIBIT);
}
int pll_is_locked(void)
{
return AT91F_PIO_IsInputSet(AT91C_BASE_PIOA, OPENPICC_PIO_PLL_LOCK);
}
static void pll_lock_change_cb(uint32_t pio)
{
DEBUGPCRF("PLL LOCK: %d", pll_is_locked());
#if 1
if (pll_is_locked())
led_switch(2, 1);
else
led_switch(2, 0);
#endif
}
void pll_init(void)
{
AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, OPENPICC_PIO_PLL_INHIBIT);
AT91F_PIO_CfgInput(AT91C_BASE_PIOA, OPENPICC_PIO_PLL_LOCK);
pll_inhibit(0);
pio_irq_register(OPENPICC_PIO_PLL_LOCK, &pll_lock_change_cb);
pio_irq_enable(OPENPICC_PIO_PLL_LOCK);
}
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