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9cc83378 SM |
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 | { | |
6d0f6bcf | 36 | nios_pio_t *pio = (nios_pio_t *)CONFIG_SYS_LEDPIO_ADDR; |
9cc83378 SM |
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 | { | |
6d0f6bcf | 47 | nios_pio_t *pio = (nios_pio_t *)CONFIG_SYS_LEDPIO_ADDR; |
9cc83378 SM |
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 | { | |
6d0f6bcf | 58 | nios_pio_t *pio = (nios_pio_t *)CONFIG_SYS_LEDPIO_ADDR; |
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59 | |
60 | val ^= mask; | |
61 | writel (&pio->data, val); | |
62 | } |