| Scott McNutt | 2ca0085 | 2006-06-08 13:37:39 -0400 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2004, Psyent Corporation <www.psyent.com> |
| 3 | * Scott McNutt <smcnutt@psyent.com> |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include <common.h> |
| 25 | #include <asm/io.h> |
| 26 | #include <nios2-io.h> |
| 27 | #include <status_led.h> |
| 28 | |
| 29 | /* The LED port is configured as output only, so we |
| 30 | * must track the state manually. |
| 31 | */ |
| 32 | static led_id_t val = 0; |
| 33 | |
| 34 | void __led_init (led_id_t mask, int state) |
| 35 | { |
| 36 | nios_pio_t *pio = (nios_pio_t *)CFG_LEDPIO_ADDR; |
| 37 | |
| 38 | if (state == STATUS_LED_ON) |
| 39 | val &= ~mask; |
| 40 | else |
| 41 | val |= mask; |
| 42 | writel (&pio->data, val); |
| 43 | } |
| 44 | |
| 45 | void __led_set (led_id_t mask, int state) |
| 46 | { |
| 47 | nios_pio_t *pio = (nios_pio_t *)CFG_LEDPIO_ADDR; |
| 48 | |
| 49 | if (state == STATUS_LED_ON) |
| 50 | val &= ~mask; |
| 51 | else |
| 52 | val |= mask; |
| 53 | writel (&pio->data, val); |
| 54 | } |
| 55 | |
| 56 | void __led_toggle (led_id_t mask) |
| 57 | { |
| 58 | nios_pio_t *pio = (nios_pio_t *)CFG_LEDPIO_ADDR; |
| 59 | |
| 60 | val ^= mask; |
| 61 | writel (&pio->data, val); |
| 62 | } |