1 /* 2 * linux/arch/sh/boards/renesas/rts7751r2d/irq.c 3 * 4 * Copyright (C) 2007 Magnus Damm 5 * Copyright (C) 2000 Kazumoto Kojima 6 * 7 * Renesas Technology Sales RTS7751R2D Support, R2D-PLUS and R2D-1. 8 * 9 * Modified for RTS7751R2D by 10 * Atom Create Engineering Co., Ltd. 2002. 11 */ 12 #include <linux/init.h> 13 #include <linux/irq.h> 14 #include <linux/interrupt.h> 15 #include <linux/io.h> 16 #include <mach/r2d.h> 17 18 #define R2D_NR_IRL 13 19 20 enum { 21 UNUSED = 0, 22 23 /* board specific interrupt sources (R2D-1 and R2D-PLUS) */ 24 EXT, /* EXT_INT0-3 */ 25 RTC_T, RTC_A, /* Real Time Clock */ 26 AX88796, /* Ethernet controller (R2D-1 board) */ 27 KEY, /* Key input (R2D-PLUS board) */ 28 SDCARD, /* SD Card */ 29 CF_CD, CF_IDE, /* CF Card Detect + CF IDE */ 30 SM501, /* SM501 aka Voyager */ 31 PCI_INTD_RTL8139, /* Ethernet controller */ 32 PCI_INTC_PCI1520, /* Cardbus/PCMCIA bridge */ 33 PCI_INTB_RTL8139, /* Ethernet controller with HUB (R2D-PLUS board) */ 34 PCI_INTB_SLOT, /* PCI Slot 3.3v (R2D-1 board) */ 35 PCI_INTA_SLOT, /* PCI Slot 3.3v */ 36 TP, /* Touch Panel */ 37 }; 38 39 #ifdef CONFIG_RTS7751R2D_1 40 41 /* Vectors for R2D-1 */ 42 static struct intc_vect vectors_r2d_1[] __initdata = { 43 INTC_IRQ(EXT, IRQ_EXT), 44 INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A), 45 INTC_IRQ(AX88796, IRQ_AX88796), INTC_IRQ(SDCARD, IRQ_SDCARD), 46 INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE), /* ng */ 47 INTC_IRQ(SM501, IRQ_VOYAGER), 48 INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD), 49 INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC), 50 INTC_IRQ(PCI_INTB_SLOT, IRQ_PCI_INTB), 51 INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA), 52 INTC_IRQ(TP, IRQ_TP), 53 }; 54 55 /* IRLMSK mask register layout for R2D-1 */ 56 static struct intc_mask_reg mask_registers_r2d_1[] __initdata = { 57 { 0xa4000000, 0, 16, /* IRLMSK */ 58 { TP, PCI_INTA_SLOT, PCI_INTB_SLOT, 59 PCI_INTC_PCI1520, PCI_INTD_RTL8139, 60 SM501, CF_IDE, CF_CD, SDCARD, AX88796, 61 RTC_A, RTC_T, 0, 0, 0, EXT } }, 62 }; 63 64 /* IRLn to IRQ table for R2D-1 */ 65 static unsigned char irl2irq_r2d_1[R2D_NR_IRL] __initdata = { 66 IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC, 67 IRQ_VOYAGER, IRQ_AX88796, IRQ_RTC_A, IRQ_RTC_T, 68 IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT, 69 IRQ_TP, 70 }; 71 72 static DECLARE_INTC_DESC(intc_desc_r2d_1, "r2d-1", vectors_r2d_1, 73 NULL, mask_registers_r2d_1, NULL, NULL); 74 75 #endif /* CONFIG_RTS7751R2D_1 */ 76 77 #ifdef CONFIG_RTS7751R2D_PLUS 78 79 /* Vectors for R2D-PLUS */ 80 static struct intc_vect vectors_r2d_plus[] __initdata = { 81 INTC_IRQ(EXT, IRQ_EXT), 82 INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A), 83 INTC_IRQ(KEY, IRQ_KEY), INTC_IRQ(SDCARD, IRQ_SDCARD), 84 INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE), 85 INTC_IRQ(SM501, IRQ_VOYAGER), 86 INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD), 87 INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC), 88 INTC_IRQ(PCI_INTB_RTL8139, IRQ_PCI_INTB), 89 INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA), 90 INTC_IRQ(TP, IRQ_TP), 91 }; 92 93 /* IRLMSK mask register layout for R2D-PLUS */ 94 static struct intc_mask_reg mask_registers_r2d_plus[] __initdata = { 95 { 0xa4000000, 0, 16, /* IRLMSK */ 96 { TP, PCI_INTA_SLOT, PCI_INTB_RTL8139, 97 PCI_INTC_PCI1520, PCI_INTD_RTL8139, 98 SM501, CF_IDE, CF_CD, SDCARD, KEY, 99 RTC_A, RTC_T, 0, 0, 0, EXT } }, 100 }; 101 102 /* IRLn to IRQ table for R2D-PLUS */ 103 static unsigned char irl2irq_r2d_plus[R2D_NR_IRL] __initdata = { 104 IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC, 105 IRQ_VOYAGER, IRQ_KEY, IRQ_RTC_A, IRQ_RTC_T, 106 IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT, 107 IRQ_TP, 108 }; 109 110 static DECLARE_INTC_DESC(intc_desc_r2d_plus, "r2d-plus", vectors_r2d_plus, 111 NULL, mask_registers_r2d_plus, NULL, NULL); 112 113 #endif /* CONFIG_RTS7751R2D_PLUS */ 114 115 static unsigned char irl2irq[R2D_NR_IRL]; 116 117 int rts7751r2d_irq_demux(int irq) 118 { 119 if (irq >= R2D_NR_IRL || irq < 0 || !irl2irq[irq]) 120 return irq; 121 122 return irl2irq[irq]; 123 } 124 125 /* 126 * Initialize IRQ setting 127 */ 128 void __init init_rts7751r2d_IRQ(void) 129 { 130 struct intc_desc *d; 131 132 switch (__raw_readw(PA_VERREG) & 0xf0) { 133 #ifdef CONFIG_RTS7751R2D_PLUS 134 case 0x10: 135 printk(KERN_INFO "Using R2D-PLUS interrupt controller.\n"); 136 d = &intc_desc_r2d_plus; 137 memcpy(irl2irq, irl2irq_r2d_plus, R2D_NR_IRL); 138 break; 139 #endif 140 #ifdef CONFIG_RTS7751R2D_1 141 case 0x00: /* according to manual */ 142 case 0x30: /* in reality */ 143 printk(KERN_INFO "Using R2D-1 interrupt controller.\n"); 144 d = &intc_desc_r2d_1; 145 memcpy(irl2irq, irl2irq_r2d_1, R2D_NR_IRL); 146 break; 147 #endif 148 default: 149 printk(KERN_INFO "Unknown R2D interrupt controller 0x%04x\n", 150 __raw_readw(PA_VERREG)); 151 return; 152 } 153 154 register_intc_controller(d); 155 } 156