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// SPDX-License-Identifier: GPL-2.0
/*
* 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 <mach/r2d.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 || irq < 0 || !irl2irq[irq])
return irq;
return irl2irq[irq];
}
/*
* Initialize IRQ setting
*/
void __init init_rts7751r2d_IRQ(void)
{
struct intc_desc *d;
switch (__raw_readw(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",
__raw_readw(PA_VERREG));
return;
}
register_intc_controller(d);
}
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