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Diffstat (limited to 'board/psyent/pk1c20/led.c')
-rw-r--r-- | board/psyent/pk1c20/led.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/board/psyent/pk1c20/led.c b/board/psyent/pk1c20/led.c new file mode 100644 index 0000000..c175c9b --- /dev/null +++ b/board/psyent/pk1c20/led.c @@ -0,0 +1,62 @@ +/* + * (C) Copyright 2004, Psyent Corporation <www.psyent.com> + * Scott McNutt <smcnutt@psyent.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 <common.h> +#include <nios2.h> +#include <nios2-io.h> +#include <status_led.h> + +/* The LED port is configured as output only, so we + * must track the state manually. + */ +static led_id_t val = 0; + +void __led_init (led_id_t mask, int state) +{ + nios_pio_t *pio = (nios_pio_t *)CACHE_BYPASS(CFG_LEDPIO_ADDR); + + if (state == STATUS_LED_ON) + val &= ~mask; + else + val |= mask; + pio->data = val; +} + +void __led_set (led_id_t mask, int state) +{ + nios_pio_t *pio = (nios_pio_t *)CACHE_BYPASS(CFG_LEDPIO_ADDR); + + if (state == STATUS_LED_ON) + val &= ~mask; + else + val |= mask; + pio->data = val; +} + +void __led_toggle (led_id_t mask) +{ + nios_pio_t *pio = (nios_pio_t *)CACHE_BYPASS(CFG_LEDPIO_ADDR); + + val ^= mask; + pio->data = val; +} |