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-rw-r--r--openpicc/application/pll.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/openpicc/application/pll.c b/openpicc/application/pll.c
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--- /dev/null
+++ b/openpicc/application/pll.c
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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 "pio_irq.h"
+#include "dbgu.h"
+#include "led.h"
+#include "board.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(u_int32_t pio)
+{
+ (void)pio;
+ DEBUGPCRF("PLL LOCK: %d", pll_is_locked());
+#if 1
+ vLedSetRed(pll_is_locked());
+#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);
+}
personal git repositories of Harald Welte. Your mileage may vary