arch/sh/boards/mach-highlander/irq-r7780mp.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Renesas Solutions Highlander R7780MP Support.
   4  *
   5  * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
   6  * Copyright (C) 2006  Paul Mundt
   7  * Copyright (C) 2007  Magnus Damm
   8  */
   9 #include <linux/init.h>
  10 #include <linux/irq.h>
  11 #include <linux/io.h>
  12 #include <mach/highlander.h>
  13
  14 enum {
  15         UNUSED = 0,
  16
  17         /* board specific interrupt sources */
  18         CF,             /* Compact Flash */
  19         TP,             /* Touch panel */
  20         SCIF1,          /* FPGA SCIF1 */
  21         SCIF0,          /* FPGA SCIF0 */
  22         SMBUS,          /* SMBUS */
  23         RTC,            /* RTC Alarm */
  24         AX88796,        /* Ethernet controller */
  25         PSW,            /* Push Switch */
  26
  27         /* external bus connector */
  28         EXT1, EXT2, EXT4, EXT5, EXT6,
  29 };
  30
  31 static struct intc_vect vectors[] __initdata = {
  32         INTC_IRQ(CF, IRQ_CF),
  33         INTC_IRQ(TP, IRQ_TP),
  34         INTC_IRQ(SCIF1, IRQ_SCIF1),
  35         INTC_IRQ(SCIF0, IRQ_SCIF0),
  36         INTC_IRQ(SMBUS, IRQ_SMBUS),
  37         INTC_IRQ(RTC, IRQ_RTC),
  38         INTC_IRQ(AX88796, IRQ_AX88796),
  39         INTC_IRQ(PSW, IRQ_PSW),
  40
  41         INTC_IRQ(EXT1, IRQ_EXT1), INTC_IRQ(EXT2, IRQ_EXT2),
  42         INTC_IRQ(EXT4, IRQ_EXT4), INTC_IRQ(EXT5, IRQ_EXT5),
  43         INTC_IRQ(EXT6, IRQ_EXT6),
  44 };
  45
  46 static struct intc_mask_reg mask_registers[] __initdata = {
  47         { 0xa4000000, 0, 16, /* IRLMSK */
  48           { SCIF0, SCIF1, RTC, 0, CF, 0, TP, SMBUS,
  49             0, EXT6, EXT5, EXT4, EXT2, EXT1, PSW, AX88796 } },
  50 };
  51
  52 static unsigned char irl2irq[HL_NR_IRL] __initdata = {
  53         0, IRQ_CF, IRQ_TP, IRQ_SCIF1,
  54         IRQ_SCIF0, IRQ_SMBUS, IRQ_RTC, IRQ_EXT6,
  55         IRQ_EXT5, IRQ_EXT4, IRQ_EXT2, IRQ_EXT1,
  56         0, IRQ_AX88796, IRQ_PSW,
  57 };
  58
  59 static DECLARE_INTC_DESC(intc_desc, "r7780mp", vectors,
  60                          NULL, mask_registers, NULL, NULL);
  61
  62 unsigned char * __init highlander_plat_irq_setup(void)
  63 {
  64         if ((__raw_readw(0xa4000700) & 0xf000) == 0x2000) {
  65                 printk(KERN_INFO "Using r7780mp interrupt controller.\n");
  66                 register_intc_controller(&intc_desc);
  67                 return irl2irq;
  68         }
  69
  70         return NULL;
  71 }