arch/arm7tdmi/mach-lpc21xx/interrupt.c

   1 /* Author: Domen Puncer <domen@cba.si>.  License: WTFPL, see file LICENSE */
   2 #include <interrupt.h>
   3 #include <stdio.h>
   4
   5 // myeah, should be in arch for NVIC
   6 #include <mach/lpc21xx_regs.h>
   7
   8 #warning "TODO"
   9
  10
  11 struct irq_entry {
  12         /* this will be changed to doubly linked list, and irq_request will also have to be fixed */
  13         irqreturn_t (*handler)(int irq, void *dev_id);
  14         void *dev_id;
  15 };
  16
  17 int irq_request(unsigned int irq, irqreturn_t (*handler)(int irq, void *dev_id), unsigned long flags, void *dev_id);
  18 void irq_free(unsigned int irq, void *dev_id);
  19
  20 void irq_enable(int irq)
  21 {
  22         VICIntSelect &= ~(1<<irq);
  23         VICIntEnable |= 1<<irq;
  24 }
  25
  26 void irq_disable(int irq)
  27 {
  28         VICIntEnClr |= 1<<irq;
  29 }
  30
  31 void irq_ack(int irq)
  32 {
  33         VICVectAddr = 0; /* clear interrupt pending (of current executing interrupt) */
  34 }
  35
  36
  37 // XXX install me
  38 static irqreturn_t irq_default_handler(int irq, void *dev_id)
  39 {
  40         printf("%s: unhandled irq %i, disabling\n", __func__, irq);
  41         irq_disable(irq);
  42         return IRQ_HANDLED;
  43 }