arch/arm/mach-at91/include/mach/irqs.h

   1 /*
   2  * arch/arm/mach-at91/include/mach/irqs.h
   3  *
   4  *  Copyright (C) 2004 SAN People
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifndef __ASM_ARCH_IRQS_H
  22 #define __ASM_ARCH_IRQS_H
  23
  24 #include <linux/io.h>
  25 #include <mach/at91_aic.h>
  26
  27 #define NR_AIC_IRQS 32
  28
  29
  30 /*
  31  * Acknowledge interrupt with AIC after interrupt has been handled.
  32  *   (by kernel/irq.c)
  33  */
  34 #define irq_finish(irq) do { at91_sys_write(AT91_AIC_EOICR, 0); } while (0)
  35
  36
  37 /*
  38  * IRQ interrupt symbols are the AT91xxx_ID_* symbols
  39  * for IRQs handled directly through the AIC, or else the AT91_PIN_*
  40  * symbols in gpio.h for ones handled indirectly as GPIOs.
  41  * We make provision for 5 banks of GPIO.
  42  */
  43 #define NR_IRQS         (NR_AIC_IRQS + (5 * 32))
  44
  45 /* FIQ is AIC source 0. */
  46 #define FIQ_START AT91_ID_FIQ
  47
  48 #endif