1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 2da2014a2SPaul Mundt /* 3da2014a2SPaul Mundt * linux/arch/sh/boards/renesas/rts7751r2d/irq.c 4da2014a2SPaul Mundt * 5da2014a2SPaul Mundt * Copyright (C) 2007 Magnus Damm 6da2014a2SPaul Mundt * Copyright (C) 2000 Kazumoto Kojima 7da2014a2SPaul Mundt * 8da2014a2SPaul Mundt * Renesas Technology Sales RTS7751R2D Support, R2D-PLUS and R2D-1. 9da2014a2SPaul Mundt * 10da2014a2SPaul Mundt * Modified for RTS7751R2D by 11da2014a2SPaul Mundt * Atom Create Engineering Co., Ltd. 2002. 12da2014a2SPaul Mundt */ 13da2014a2SPaul Mundt #include <linux/init.h> 14da2014a2SPaul Mundt #include <linux/irq.h> 15da2014a2SPaul Mundt #include <linux/interrupt.h> 16da2014a2SPaul Mundt #include <linux/io.h> 177639a454SPaul Mundt #include <mach/r2d.h> 18da2014a2SPaul Mundt 19da2014a2SPaul Mundt #define R2D_NR_IRL 13 20da2014a2SPaul Mundt 21da2014a2SPaul Mundt enum { 22da2014a2SPaul Mundt UNUSED = 0, 23da2014a2SPaul Mundt 24da2014a2SPaul Mundt /* board specific interrupt sources (R2D-1 and R2D-PLUS) */ 25da2014a2SPaul Mundt EXT, /* EXT_INT0-3 */ 26da2014a2SPaul Mundt RTC_T, RTC_A, /* Real Time Clock */ 27da2014a2SPaul Mundt AX88796, /* Ethernet controller (R2D-1 board) */ 28da2014a2SPaul Mundt KEY, /* Key input (R2D-PLUS board) */ 29da2014a2SPaul Mundt SDCARD, /* SD Card */ 30da2014a2SPaul Mundt CF_CD, CF_IDE, /* CF Card Detect + CF IDE */ 31da2014a2SPaul Mundt SM501, /* SM501 aka Voyager */ 32da2014a2SPaul Mundt PCI_INTD_RTL8139, /* Ethernet controller */ 33da2014a2SPaul Mundt PCI_INTC_PCI1520, /* Cardbus/PCMCIA bridge */ 34da2014a2SPaul Mundt PCI_INTB_RTL8139, /* Ethernet controller with HUB (R2D-PLUS board) */ 35da2014a2SPaul Mundt PCI_INTB_SLOT, /* PCI Slot 3.3v (R2D-1 board) */ 36da2014a2SPaul Mundt PCI_INTA_SLOT, /* PCI Slot 3.3v */ 37da2014a2SPaul Mundt TP, /* Touch Panel */ 38da2014a2SPaul Mundt }; 39da2014a2SPaul Mundt 40da2014a2SPaul Mundt #ifdef CONFIG_RTS7751R2D_1 41da2014a2SPaul Mundt 42da2014a2SPaul Mundt /* Vectors for R2D-1 */ 43da2014a2SPaul Mundt static struct intc_vect vectors_r2d_1[] __initdata = { 44da2014a2SPaul Mundt INTC_IRQ(EXT, IRQ_EXT), 45da2014a2SPaul Mundt INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A), 46da2014a2SPaul Mundt INTC_IRQ(AX88796, IRQ_AX88796), INTC_IRQ(SDCARD, IRQ_SDCARD), 47da2014a2SPaul Mundt INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE), /* ng */ 48da2014a2SPaul Mundt INTC_IRQ(SM501, IRQ_VOYAGER), 49da2014a2SPaul Mundt INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD), 50da2014a2SPaul Mundt INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC), 51da2014a2SPaul Mundt INTC_IRQ(PCI_INTB_SLOT, IRQ_PCI_INTB), 52da2014a2SPaul Mundt INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA), 53da2014a2SPaul Mundt INTC_IRQ(TP, IRQ_TP), 54da2014a2SPaul Mundt }; 55da2014a2SPaul Mundt 56da2014a2SPaul Mundt /* IRLMSK mask register layout for R2D-1 */ 57da2014a2SPaul Mundt static struct intc_mask_reg mask_registers_r2d_1[] __initdata = { 58da2014a2SPaul Mundt { 0xa4000000, 0, 16, /* IRLMSK */ 59da2014a2SPaul Mundt { TP, PCI_INTA_SLOT, PCI_INTB_SLOT, 60da2014a2SPaul Mundt PCI_INTC_PCI1520, PCI_INTD_RTL8139, 61da2014a2SPaul Mundt SM501, CF_IDE, CF_CD, SDCARD, AX88796, 62da2014a2SPaul Mundt RTC_A, RTC_T, 0, 0, 0, EXT } }, 63da2014a2SPaul Mundt }; 64da2014a2SPaul Mundt 65da2014a2SPaul Mundt /* IRLn to IRQ table for R2D-1 */ 66da2014a2SPaul Mundt static unsigned char irl2irq_r2d_1[R2D_NR_IRL] __initdata = { 67da2014a2SPaul Mundt IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC, 68da2014a2SPaul Mundt IRQ_VOYAGER, IRQ_AX88796, IRQ_RTC_A, IRQ_RTC_T, 69da2014a2SPaul Mundt IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT, 70da2014a2SPaul Mundt IRQ_TP, 71da2014a2SPaul Mundt }; 72da2014a2SPaul Mundt 73da2014a2SPaul Mundt static DECLARE_INTC_DESC(intc_desc_r2d_1, "r2d-1", vectors_r2d_1, 74da2014a2SPaul Mundt NULL, mask_registers_r2d_1, NULL, NULL); 75da2014a2SPaul Mundt 76da2014a2SPaul Mundt #endif /* CONFIG_RTS7751R2D_1 */ 77da2014a2SPaul Mundt 78da2014a2SPaul Mundt #ifdef CONFIG_RTS7751R2D_PLUS 79da2014a2SPaul Mundt 80da2014a2SPaul Mundt /* Vectors for R2D-PLUS */ 81da2014a2SPaul Mundt static struct intc_vect vectors_r2d_plus[] __initdata = { 82da2014a2SPaul Mundt INTC_IRQ(EXT, IRQ_EXT), 83da2014a2SPaul Mundt INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A), 84da2014a2SPaul Mundt INTC_IRQ(KEY, IRQ_KEY), INTC_IRQ(SDCARD, IRQ_SDCARD), 85da2014a2SPaul Mundt INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE), 86da2014a2SPaul Mundt INTC_IRQ(SM501, IRQ_VOYAGER), 87da2014a2SPaul Mundt INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD), 88da2014a2SPaul Mundt INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC), 89da2014a2SPaul Mundt INTC_IRQ(PCI_INTB_RTL8139, IRQ_PCI_INTB), 90da2014a2SPaul Mundt INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA), 91da2014a2SPaul Mundt INTC_IRQ(TP, IRQ_TP), 92da2014a2SPaul Mundt }; 93da2014a2SPaul Mundt 94da2014a2SPaul Mundt /* IRLMSK mask register layout for R2D-PLUS */ 95da2014a2SPaul Mundt static struct intc_mask_reg mask_registers_r2d_plus[] __initdata = { 96da2014a2SPaul Mundt { 0xa4000000, 0, 16, /* IRLMSK */ 97da2014a2SPaul Mundt { TP, PCI_INTA_SLOT, PCI_INTB_RTL8139, 98da2014a2SPaul Mundt PCI_INTC_PCI1520, PCI_INTD_RTL8139, 99da2014a2SPaul Mundt SM501, CF_IDE, CF_CD, SDCARD, KEY, 100da2014a2SPaul Mundt RTC_A, RTC_T, 0, 0, 0, EXT } }, 101da2014a2SPaul Mundt }; 102da2014a2SPaul Mundt 103da2014a2SPaul Mundt /* IRLn to IRQ table for R2D-PLUS */ 104da2014a2SPaul Mundt static unsigned char irl2irq_r2d_plus[R2D_NR_IRL] __initdata = { 105da2014a2SPaul Mundt IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC, 106da2014a2SPaul Mundt IRQ_VOYAGER, IRQ_KEY, IRQ_RTC_A, IRQ_RTC_T, 107da2014a2SPaul Mundt IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT, 108da2014a2SPaul Mundt IRQ_TP, 109da2014a2SPaul Mundt }; 110da2014a2SPaul Mundt 111da2014a2SPaul Mundt static DECLARE_INTC_DESC(intc_desc_r2d_plus, "r2d-plus", vectors_r2d_plus, 112da2014a2SPaul Mundt NULL, mask_registers_r2d_plus, NULL, NULL); 113da2014a2SPaul Mundt 114da2014a2SPaul Mundt #endif /* CONFIG_RTS7751R2D_PLUS */ 115da2014a2SPaul Mundt 116da2014a2SPaul Mundt static unsigned char irl2irq[R2D_NR_IRL]; 117da2014a2SPaul Mundt 118da2014a2SPaul Mundt int rts7751r2d_irq_demux(int irq) 119da2014a2SPaul Mundt { 120*ab8aa4f0SGeert Uytterhoeven if (irq >= R2D_NR_IRL + 16 || irq < 16 || !irl2irq[irq - 16]) 121da2014a2SPaul Mundt return irq; 122da2014a2SPaul Mundt 123*ab8aa4f0SGeert Uytterhoeven return irl2irq[irq - 16]; 124da2014a2SPaul Mundt } 125da2014a2SPaul Mundt 126da2014a2SPaul Mundt /* 127da2014a2SPaul Mundt * Initialize IRQ setting 128da2014a2SPaul Mundt */ 129da2014a2SPaul Mundt void __init init_rts7751r2d_IRQ(void) 130da2014a2SPaul Mundt { 131da2014a2SPaul Mundt struct intc_desc *d; 132da2014a2SPaul Mundt 1339d56dd3bSPaul Mundt switch (__raw_readw(PA_VERREG) & 0xf0) { 134da2014a2SPaul Mundt #ifdef CONFIG_RTS7751R2D_PLUS 135da2014a2SPaul Mundt case 0x10: 136da2014a2SPaul Mundt printk(KERN_INFO "Using R2D-PLUS interrupt controller.\n"); 137da2014a2SPaul Mundt d = &intc_desc_r2d_plus; 138da2014a2SPaul Mundt memcpy(irl2irq, irl2irq_r2d_plus, R2D_NR_IRL); 139da2014a2SPaul Mundt break; 140da2014a2SPaul Mundt #endif 141da2014a2SPaul Mundt #ifdef CONFIG_RTS7751R2D_1 142da2014a2SPaul Mundt case 0x00: /* according to manual */ 143da2014a2SPaul Mundt case 0x30: /* in reality */ 144da2014a2SPaul Mundt printk(KERN_INFO "Using R2D-1 interrupt controller.\n"); 145da2014a2SPaul Mundt d = &intc_desc_r2d_1; 146da2014a2SPaul Mundt memcpy(irl2irq, irl2irq_r2d_1, R2D_NR_IRL); 147da2014a2SPaul Mundt break; 148da2014a2SPaul Mundt #endif 149da2014a2SPaul Mundt default: 150da2014a2SPaul Mundt printk(KERN_INFO "Unknown R2D interrupt controller 0x%04x\n", 1519d56dd3bSPaul Mundt __raw_readw(PA_VERREG)); 152da2014a2SPaul Mundt return; 153da2014a2SPaul Mundt } 154da2014a2SPaul Mundt 155da2014a2SPaul Mundt register_intc_controller(d); 156da2014a2SPaul Mundt } 157