LXR uboot/board/psyent/pk1c20/led.c

   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 */
  32static led_id_t val = 0;
  33
  34void __led_init (led_id_t mask, int state)
  35{
  36        nios_pio_t *pio = (nios_pio_t *)CONFIG_SYS_LEDPIO_ADDR;
  37
  38        if (state == STATUS_LED_ON)
  39                val &= ~mask;
  40        else
  41                val |= mask;
  42        writel (val, &pio->data);
  43}
  44
  45void __led_set (led_id_t mask, int state)
  46{
  47        nios_pio_t *pio = (nios_pio_t *)CONFIG_SYS_LEDPIO_ADDR;
  48
  49        if (state == STATUS_LED_ON)
  50                val &= ~mask;
  51        else
  52                val |= mask;
  53        writel (val, &pio->data);
  54}
  55
  56void __led_toggle (led_id_t mask)
  57{
  58        nios_pio_t *pio = (nios_pio_t *)CONFIG_SYS_LEDPIO_ADDR;
  59
  60        val ^= mask;
  61        writel (val, &pio->data);
  62}
  63