release/src-rt-6.x.4708/linux/linux-2.6.36/arch/sh/boards/mach-se/7721/irq.c

   1 /*
   2  * linux/arch/sh/boards/se/7721/irq.c
   3  *
   4  * Copyright (C) 2008  Renesas Solutions Corp.
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License.  See the file "COPYING" in the main directory of this archive
   8  * for more details.
   9  */
  10 #include <linux/init.h>
  11 #include <linux/irq.h>
  12 #include <linux/interrupt.h>
  13 #include <linux/io.h>
  14 #include <mach-se/mach/se7721.h>
  15
  16 enum {
  17         UNUSED = 0,
  18
  19         /* board specific interrupt sources */
  20         MRSHPC,
  21 };
  22
  23 static struct intc_vect vectors[] __initdata = {
  24         INTC_IRQ(MRSHPC, MRSHPC_IRQ0),
  25 };
  26
  27 static struct intc_prio_reg prio_registers[] __initdata = {
  28         { FPGA_ILSR6, 0, 8, 4, /* IRLMSK */
  29           { 0, MRSHPC } },
  30 };
  31
  32 static DECLARE_INTC_DESC(intc_desc, "SE7721", vectors,
  33                          NULL, NULL, prio_registers, NULL);
  34
  35 /*
  36  * Initialize IRQ setting
  37  */
  38 void __init init_se7721_IRQ(void)
  39 {
  40         /* PPCR */
  41         __raw_writew(__raw_readw(0xa4050118) & ~0x00ff, 0xa4050118);
  42
  43         register_intc_controller(&intc_desc);
  44         intc_set_priority(MRSHPC_IRQ0, 0xf - MRSHPC_IRQ0);
  45 }