arch/sh/boards/mach-sdk7780/irq.c

   1 /*
   2  * linux/arch/sh/boards/renesas/sdk7780/irq.c
   3  *
   4  * Renesas Technology Europe SDK7780 Support.
   5  *
   6  * Copyright (C) 2008  Nicholas Beck <nbeck@mpc-data.co.uk>
   7  *
   8  * This file is subject to the terms and conditions of the GNU General Public
   9  * License.  See the file "COPYING" in the main directory of this archive
  10  * for more details.
  11  */
  12 #include <linux/init.h>
  13 #include <linux/irq.h>
  14 #include <linux/io.h>
  15 #include <mach/sdk7780.h>
  16
  17 enum {
  18         UNUSED = 0,
  19         /* board specific interrupt sources */
  20         SMC91C111,      /* Ethernet controller */
  21 };
  22
  23 static struct intc_vect fpga_vectors[] __initdata = {
  24         INTC_IRQ(SMC91C111, IRQ_ETHERNET),
  25 };
  26
  27 static struct intc_mask_reg fpga_mask_registers[] __initdata = {
  28         { 0, FPGA_IRQ0MR, 16,
  29           { 0, 0, 0, 0, 0, 0, 0, 0,
  30             0, 0, 0, SMC91C111, 0, 0, 0, 0 } },
  31 };
  32
  33 static DECLARE_INTC_DESC(fpga_intc_desc, "sdk7780-irq", fpga_vectors,
  34                          NULL, fpga_mask_registers, NULL, NULL);
  35
  36 void __init init_sdk7780_IRQ(void)
  37 {
  38         printk(KERN_INFO "Using SDK7780 interrupt controller.\n");
  39
  40         __raw_writew(0xFFFF, FPGA_IRQ0MR);
  41         /* Setup IRL 0-3 */
  42         __raw_writew(0x0003, FPGA_IMSR);
  43         plat_irq_setup_pins(IRQ_MODE_IRL3210);
  44
  45         register_intc_controller(&fpga_intc_desc);
  46 }