diff options
Diffstat (limited to 'openpicc/application/pll.c')
| -rw-r--r-- | openpicc/application/pll.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/openpicc/application/pll.c b/openpicc/application/pll.c new file mode 100644 index 0000000..b9aa495 --- /dev/null +++ b/openpicc/application/pll.c @@ -0,0 +1,58 @@ +/* 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); +} |