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