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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * linux/arch/sh/boards/renesas/rts7751r2d/irq.c
4 *
5 * Copyright (C) 2007 Magnus Damm
6 * Copyright (C) 2000 Kazumoto Kojima
7 *
8 * Renesas Technology Sales RTS7751R2D Support, R2D-PLUS and R2D-1.
9 *
10 * Modified for RTS7751R2D by
11 * Atom Create Engineering Co., Ltd. 2002.
12 */
13#include <linux/init.h>
14#include <linux/irq.h>
15#include <linux/interrupt.h>
16#include <linux/io.h>
17#include <mach/r2d.h>
18
19#define R2D_NR_IRL 13
20
21enum {
22 UNUSED = 0,
23
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 */
43static 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 */
57static 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 */
66static 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
73static DECLARE_INTC_DESC(intc_desc_r2d_1, "r2d-1", vectors_r2d_1,
74 NULL, mask_registers_r2d_1, NULL, NULL);
75
76#endif /* CONFIG_RTS7751R2D_1 */
77
78#ifdef CONFIG_RTS7751R2D_PLUS
79
80/* Vectors for R2D-PLUS */
81static 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 */
95static 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 */
104static 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
111static DECLARE_INTC_DESC(intc_desc_r2d_plus, "r2d-plus", vectors_r2d_plus,
112 NULL, mask_registers_r2d_plus, NULL, NULL);
113
114#endif /* CONFIG_RTS7751R2D_PLUS */
115
116static unsigned char irl2irq[R2D_NR_IRL];
117
118int rts7751r2d_irq_demux(int irq)
119{
120 if (irq >= R2D_NR_IRL || irq < 0 || !irl2irq[irq])
121 return irq;
122
123 return irl2irq[irq];
124}
125
126/*
127 * Initialize IRQ setting
128 */
129void __init init_rts7751r2d_IRQ(void)
130{
131 struct intc_desc *d;
132
133 switch (__raw_readw(PA_VERREG) & 0xf0) {
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
142 case 0x00: /* according to manual */
143 case 0x30: /* in reality */
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:
150 printk(KERN_INFO "Unknown R2D interrupt controller 0x%04x\n",
151 __raw_readw(PA_VERREG));
152 return;
153 }
154
155 register_intc_controller(d);
156}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * linux/arch/sh/boards/renesas/rts7751r2d/irq.c
4 *
5 * Copyright (C) 2007 Magnus Damm
6 * Copyright (C) 2000 Kazumoto Kojima
7 *
8 * Renesas Technology Sales RTS7751R2D Support, R2D-PLUS and R2D-1.
9 *
10 * Modified for RTS7751R2D by
11 * Atom Create Engineering Co., Ltd. 2002.
12 */
13#include <linux/init.h>
14#include <linux/irq.h>
15#include <linux/interrupt.h>
16#include <linux/io.h>
17#include <mach/r2d.h>
18
19#define R2D_NR_IRL 13
20
21enum {
22 UNUSED = 0,
23
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 */
43static 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 */
57static 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 */
66static 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
73static DECLARE_INTC_DESC(intc_desc_r2d_1, "r2d-1", vectors_r2d_1,
74 NULL, mask_registers_r2d_1, NULL, NULL);
75
76#endif /* CONFIG_RTS7751R2D_1 */
77
78#ifdef CONFIG_RTS7751R2D_PLUS
79
80/* Vectors for R2D-PLUS */
81static 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 */
95static 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 */
104static 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
111static DECLARE_INTC_DESC(intc_desc_r2d_plus, "r2d-plus", vectors_r2d_plus,
112 NULL, mask_registers_r2d_plus, NULL, NULL);
113
114#endif /* CONFIG_RTS7751R2D_PLUS */
115
116static unsigned char irl2irq[R2D_NR_IRL];
117
118int rts7751r2d_irq_demux(int irq)
119{
120 if (irq >= R2D_NR_IRL || irq < 0 || !irl2irq[irq])
121 return irq;
122
123 return irl2irq[irq];
124}
125
126/*
127 * Initialize IRQ setting
128 */
129void __init init_rts7751r2d_IRQ(void)
130{
131 struct intc_desc *d;
132
133 switch (__raw_readw(PA_VERREG) & 0xf0) {
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
142 case 0x00: /* according to manual */
143 case 0x30: /* in reality */
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:
150 printk(KERN_INFO "Unknown R2D interrupt controller 0x%04x\n",
151 __raw_readw(PA_VERREG));
152 return;
153 }
154
155 register_intc_controller(d);
156}