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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | /* |
3 | * linux/arch/sh/boards/renesas/rts7751r2d/irq.c | |
4 | * | |
2eeec856 | 5 | * Copyright (C) 2007 Magnus Damm |
1da177e4 LT |
6 | * Copyright (C) 2000 Kazumoto Kojima |
7 | * | |
2eeec856 | 8 | * Renesas Technology Sales RTS7751R2D Support, R2D-PLUS and R2D-1. |
1da177e4 LT |
9 | * |
10 | * Modified for RTS7751R2D by | |
11 | * Atom Create Engineering Co., Ltd. 2002. | |
12 | */ | |
1da177e4 LT |
13 | #include <linux/init.h> |
14 | #include <linux/irq.h> | |
9c57548f | 15 | #include <linux/interrupt.h> |
082c44d2 | 16 | #include <linux/io.h> |
7639a454 | 17 | #include <mach/r2d.h> |
1da177e4 | 18 | |
2eeec856 | 19 | #define R2D_NR_IRL 13 |
1da177e4 | 20 | |
2eeec856 MD |
21 | enum { |
22 | UNUSED = 0, | |
1da177e4 | 23 | |
2eeec856 MD |
24 | /* board specific interrupt sources (R2D-1 and R2D-PLUS) */ |
25 | EXT, /* EXT_INT0-3 */ | |
26 | RTC_T, RTC_A, /* Real Time Clock */ | |
27 | AX88796, /* Ethernet controller (R2D-1 board) */ | |
28 | KEY, /* Key input (R2D-PLUS board) */ | |
29 | SDCARD, /* SD Card */ | |
30 | CF_CD, CF_IDE, /* CF Card Detect + CF IDE */ | |
31 | SM501, /* SM501 aka Voyager */ | |
32 | PCI_INTD_RTL8139, /* Ethernet controller */ | |
33 | PCI_INTC_PCI1520, /* Cardbus/PCMCIA bridge */ | |
34 | PCI_INTB_RTL8139, /* Ethernet controller with HUB (R2D-PLUS board) */ | |
35 | PCI_INTB_SLOT, /* PCI Slot 3.3v (R2D-1 board) */ | |
36 | PCI_INTA_SLOT, /* PCI Slot 3.3v */ | |
37 | TP, /* Touch Panel */ | |
38 | }; | |
39 | ||
40 | #ifdef CONFIG_RTS7751R2D_1 | |
41 | ||
42 | /* Vectors for R2D-1 */ | |
43 | static struct intc_vect vectors_r2d_1[] __initdata = { | |
44 | INTC_IRQ(EXT, IRQ_EXT), | |
45 | INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A), | |
46 | INTC_IRQ(AX88796, IRQ_AX88796), INTC_IRQ(SDCARD, IRQ_SDCARD), | |
47 | INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE), /* ng */ | |
48 | INTC_IRQ(SM501, IRQ_VOYAGER), | |
49 | INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD), | |
50 | INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC), | |
51 | INTC_IRQ(PCI_INTB_SLOT, IRQ_PCI_INTB), | |
52 | INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA), | |
53 | INTC_IRQ(TP, IRQ_TP), | |
54 | }; | |
55 | ||
56 | /* IRLMSK mask register layout for R2D-1 */ | |
57 | static struct intc_mask_reg mask_registers_r2d_1[] __initdata = { | |
58 | { 0xa4000000, 0, 16, /* IRLMSK */ | |
59 | { TP, PCI_INTA_SLOT, PCI_INTB_SLOT, | |
60 | PCI_INTC_PCI1520, PCI_INTD_RTL8139, | |
61 | SM501, CF_IDE, CF_CD, SDCARD, AX88796, | |
62 | RTC_A, RTC_T, 0, 0, 0, EXT } }, | |
63 | }; | |
64 | ||
65 | /* IRLn to IRQ table for R2D-1 */ | |
66 | static unsigned char irl2irq_r2d_1[R2D_NR_IRL] __initdata = { | |
67 | IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC, | |
68 | IRQ_VOYAGER, IRQ_AX88796, IRQ_RTC_A, IRQ_RTC_T, | |
69 | IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT, | |
70 | IRQ_TP, | |
71 | }; | |
72 | ||
5c37e025 | 73 | static DECLARE_INTC_DESC(intc_desc_r2d_1, "r2d-1", vectors_r2d_1, |
7f3edee8 | 74 | NULL, mask_registers_r2d_1, NULL, NULL); |
2eeec856 MD |
75 | |
76 | #endif /* CONFIG_RTS7751R2D_1 */ | |
77 | ||
78 | #ifdef CONFIG_RTS7751R2D_PLUS | |
79 | ||
80 | /* Vectors for R2D-PLUS */ | |
81 | static struct intc_vect vectors_r2d_plus[] __initdata = { | |
82 | INTC_IRQ(EXT, IRQ_EXT), | |
83 | INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A), | |
84 | INTC_IRQ(KEY, IRQ_KEY), INTC_IRQ(SDCARD, IRQ_SDCARD), | |
85 | INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE), | |
86 | INTC_IRQ(SM501, IRQ_VOYAGER), | |
87 | INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD), | |
88 | INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC), | |
89 | INTC_IRQ(PCI_INTB_RTL8139, IRQ_PCI_INTB), | |
90 | INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA), | |
91 | INTC_IRQ(TP, IRQ_TP), | |
92 | }; | |
93 | ||
94 | /* IRLMSK mask register layout for R2D-PLUS */ | |
95 | static struct intc_mask_reg mask_registers_r2d_plus[] __initdata = { | |
96 | { 0xa4000000, 0, 16, /* IRLMSK */ | |
97 | { TP, PCI_INTA_SLOT, PCI_INTB_RTL8139, | |
98 | PCI_INTC_PCI1520, PCI_INTD_RTL8139, | |
99 | SM501, CF_IDE, CF_CD, SDCARD, KEY, | |
100 | RTC_A, RTC_T, 0, 0, 0, EXT } }, | |
101 | }; | |
102 | ||
103 | /* IRLn to IRQ table for R2D-PLUS */ | |
104 | static unsigned char irl2irq_r2d_plus[R2D_NR_IRL] __initdata = { | |
105 | IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC, | |
106 | IRQ_VOYAGER, IRQ_KEY, IRQ_RTC_A, IRQ_RTC_T, | |
107 | IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT, | |
108 | IRQ_TP, | |
109 | }; | |
110 | ||
5c37e025 | 111 | static DECLARE_INTC_DESC(intc_desc_r2d_plus, "r2d-plus", vectors_r2d_plus, |
7f3edee8 | 112 | NULL, mask_registers_r2d_plus, NULL, NULL); |
2eeec856 MD |
113 | |
114 | #endif /* CONFIG_RTS7751R2D_PLUS */ | |
115 | ||
116 | static unsigned char irl2irq[R2D_NR_IRL]; | |
1da177e4 LT |
117 | |
118 | int rts7751r2d_irq_demux(int irq) | |
119 | { | |
90163320 | 120 | if (irq >= R2D_NR_IRL || irq < 0 || !irl2irq[irq]) |
2eeec856 | 121 | return irq; |
1da177e4 | 122 | |
2eeec856 MD |
123 | return irl2irq[irq]; |
124 | } | |
1da177e4 | 125 | |
1da177e4 LT |
126 | /* |
127 | * Initialize IRQ setting | |
128 | */ | |
129 | void __init init_rts7751r2d_IRQ(void) | |
130 | { | |
2eeec856 MD |
131 | struct intc_desc *d; |
132 | ||
9d56dd3b | 133 | switch (__raw_readw(PA_VERREG) & 0xf0) { |
2eeec856 MD |
134 | #ifdef CONFIG_RTS7751R2D_PLUS |
135 | case 0x10: | |
136 | printk(KERN_INFO "Using R2D-PLUS interrupt controller.\n"); | |
137 | d = &intc_desc_r2d_plus; | |
138 | memcpy(irl2irq, irl2irq_r2d_plus, R2D_NR_IRL); | |
139 | break; | |
140 | #endif | |
141 | #ifdef CONFIG_RTS7751R2D_1 | |
9cbf3be6 MD |
142 | case 0x00: /* according to manual */ |
143 | case 0x30: /* in reality */ | |
2eeec856 MD |
144 | printk(KERN_INFO "Using R2D-1 interrupt controller.\n"); |
145 | d = &intc_desc_r2d_1; | |
146 | memcpy(irl2irq, irl2irq_r2d_1, R2D_NR_IRL); | |
147 | break; | |
148 | #endif | |
149 | default: | |
9cbf3be6 | 150 | printk(KERN_INFO "Unknown R2D interrupt controller 0x%04x\n", |
9d56dd3b | 151 | __raw_readw(PA_VERREG)); |
2eeec856 | 152 | return; |
9c57548f | 153 | } |
1da177e4 | 154 | |
2eeec856 | 155 | register_intc_controller(d); |
1da177e4 | 156 | } |