1 files changed, 155 insertions, 0 deletions

diff --git a/arch/sh/boards/mach-r2d/irq.c b/arch/sh/boards/mach-r2d/irq.c
new file mode 100644
index 000000000000..8e49f6e51247
--- /dev/null
+++ b/arch/sh/boards/mach-r2d/irq.c
@@ -0,0 +1,155 @@
+/*
+ * linux/arch/sh/boards/renesas/rts7751r2d/irq.c
+ *
+ * Copyright (C) 2007  Magnus Damm
+ * Copyright (C) 2000  Kazumoto Kojima
+ *
+ * Renesas Technology Sales RTS7751R2D Support, R2D-PLUS and R2D-1.
+ *
+ * Modified for RTS7751R2D by
+ * Atom Create Engineering Co., Ltd. 2002.
+ */
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <asm/rts7751r2d.h>
+
+#define R2D_NR_IRL 13
+
+enum {
+        UNUSED = 0,
+
+        /* board specific interrupt sources (R2D-1 and R2D-PLUS) */
+        EXT,              /* EXT_INT0-3 */
+        RTC_T, RTC_A,     /* Real Time Clock */
+        AX88796,          /* Ethernet controller (R2D-1 board) */
+        KEY,              /* Key input (R2D-PLUS board) */
+        SDCARD,           /* SD Card */
+        CF_CD, CF_IDE,    /* CF Card Detect + CF IDE */
+        SM501,            /* SM501 aka Voyager */
+        PCI_INTD_RTL8139, /* Ethernet controller */
+        PCI_INTC_PCI1520, /* Cardbus/PCMCIA bridge */
+        PCI_INTB_RTL8139, /* Ethernet controller with HUB (R2D-PLUS board) */
+        PCI_INTB_SLOT,    /* PCI Slot 3.3v (R2D-1 board) */
+        PCI_INTA_SLOT,    /* PCI Slot 3.3v */
+        TP,               /* Touch Panel */
+};
+
+#ifdef CONFIG_RTS7751R2D_1
+
+/* Vectors for R2D-1 */
+static struct intc_vect vectors_r2d_1[] __initdata = {
+        INTC_IRQ(EXT, IRQ_EXT),
+        INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A),
+        INTC_IRQ(AX88796, IRQ_AX88796), INTC_IRQ(SDCARD, IRQ_SDCARD),
+        INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE), /* ng */
+        INTC_IRQ(SM501, IRQ_VOYAGER),
+        INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD),
+        INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC),
+        INTC_IRQ(PCI_INTB_SLOT, IRQ_PCI_INTB),
+        INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA),
+        INTC_IRQ(TP, IRQ_TP),
+};
+
+/* IRLMSK mask register layout for R2D-1 */
+static struct intc_mask_reg mask_registers_r2d_1[] __initdata = {
+        { 0xa4000000, 0, 16, /* IRLMSK */
+          { TP, PCI_INTA_SLOT, PCI_INTB_SLOT,
+            PCI_INTC_PCI1520, PCI_INTD_RTL8139,
+            SM501, CF_IDE, CF_CD, SDCARD, AX88796,
+            RTC_A, RTC_T, 0, 0, 0, EXT } },
+};
+
+/* IRLn to IRQ table for R2D-1 */
+static unsigned char irl2irq_r2d_1[R2D_NR_IRL] __initdata = {
+        IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC,
+        IRQ_VOYAGER, IRQ_AX88796, IRQ_RTC_A, IRQ_RTC_T,
+        IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT,
+        IRQ_TP,
+};
+
+static DECLARE_INTC_DESC(intc_desc_r2d_1, "r2d-1", vectors_r2d_1,
+                         NULL, mask_registers_r2d_1, NULL, NULL);
+
+#endif /* CONFIG_RTS7751R2D_1 */
+
+#ifdef CONFIG_RTS7751R2D_PLUS
+
+/* Vectors for R2D-PLUS */
+static struct intc_vect vectors_r2d_plus[] __initdata = {
+        INTC_IRQ(EXT, IRQ_EXT),
+        INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A),
+        INTC_IRQ(KEY, IRQ_KEY), INTC_IRQ(SDCARD, IRQ_SDCARD),
+        INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE),
+        INTC_IRQ(SM501, IRQ_VOYAGER),
+        INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD),
+        INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC),
+        INTC_IRQ(PCI_INTB_RTL8139, IRQ_PCI_INTB),
+        INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA),
+        INTC_IRQ(TP, IRQ_TP),
+};
+
+/* IRLMSK mask register layout for R2D-PLUS */
+static struct intc_mask_reg mask_registers_r2d_plus[] __initdata = {
+        { 0xa4000000, 0, 16, /* IRLMSK */
+          { TP, PCI_INTA_SLOT, PCI_INTB_RTL8139,
+            PCI_INTC_PCI1520, PCI_INTD_RTL8139,
+            SM501, CF_IDE, CF_CD, SDCARD, KEY,
+            RTC_A, RTC_T, 0, 0, 0, EXT } },
+};
+
+/* IRLn to IRQ table for R2D-PLUS */
+static unsigned char irl2irq_r2d_plus[R2D_NR_IRL] __initdata = {
+        IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC,
+        IRQ_VOYAGER, IRQ_KEY, IRQ_RTC_A, IRQ_RTC_T,
+        IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT,
+        IRQ_TP,
+};
+
+static DECLARE_INTC_DESC(intc_desc_r2d_plus, "r2d-plus", vectors_r2d_plus,
+                         NULL, mask_registers_r2d_plus, NULL, NULL);
+
+#endif /* CONFIG_RTS7751R2D_PLUS */
+
+static unsigned char irl2irq[R2D_NR_IRL];
+
+int rts7751r2d_irq_demux(int irq)
+{
+        if (irq >= R2D_NR_IRL || !irl2irq[irq])
+                return irq;
+
+        return irl2irq[irq];
+}
+
+/*
+ * Initialize IRQ setting
+ */
+void __init init_rts7751r2d_IRQ(void)
+{
+        struct intc_desc *d;
+
+        switch (ctrl_inw(PA_VERREG) & 0xf0) {
+#ifdef CONFIG_RTS7751R2D_PLUS
+        case 0x10:
+                printk(KERN_INFO "Using R2D-PLUS interrupt controller.\n");
+                d = &intc_desc_r2d_plus;
+                memcpy(irl2irq, irl2irq_r2d_plus, R2D_NR_IRL);
+                break;
+#endif
+#ifdef CONFIG_RTS7751R2D_1
+        case 0x00: /* according to manual */
+        case 0x30: /* in reality */
+                printk(KERN_INFO "Using R2D-1 interrupt controller.\n");
+                d = &intc_desc_r2d_1;
+                memcpy(irl2irq, irl2irq_r2d_1, R2D_NR_IRL);
+                break;
+#endif
+        default:
+                printk(KERN_INFO "Unknown R2D interrupt controller 0x%04x\n",
+                       ctrl_inw(PA_VERREG));
+                return;
+        }
+
+        register_intc_controller(d);
+}