1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * SH4-202 Setup
4 *
5 * Copyright (C) 2006 Paul Mundt
6 * Copyright (C) 2009 Magnus Damm
7 */
8 #include <linux/platform_device.h>
9 #include <linux/init.h>
10 #include <linux/serial.h>
11 #include <linux/serial_sci.h>
12 #include <linux/sh_timer.h>
13 #include <linux/sh_intc.h>
14 #include <linux/io.h>
15 #include <asm/platform_early.h>
16
17 static struct plat_sci_port scif0_platform_data = {
18 .scscr = SCSCR_REIE,
19 .type = PORT_SCIF,
20 };
21
22 static struct resource scif0_resources[] = {
23 DEFINE_RES_MEM(0xffe80000, 0x100),
24 DEFINE_RES_IRQ(evt2irq(0x700)),
25 DEFINE_RES_IRQ(evt2irq(0x720)),
26 DEFINE_RES_IRQ(evt2irq(0x760)),
27 DEFINE_RES_IRQ(evt2irq(0x740)),
28 };
29
30 static struct platform_device scif0_device = {
31 .name = "sh-sci",
32 .id = 0,
33 .resource = scif0_resources,
34 .num_resources = ARRAY_SIZE(scif0_resources),
35 .dev = {
36 .platform_data = &scif0_platform_data,
37 },
38 };
39
40 static struct sh_timer_config tmu0_platform_data = {
41 .channels_mask = 7,
42 };
43
44 static struct resource tmu0_resources[] = {
45 DEFINE_RES_MEM(0xffd80000, 0x30),
46 DEFINE_RES_IRQ(evt2irq(0x400)),
47 DEFINE_RES_IRQ(evt2irq(0x420)),
48 DEFINE_RES_IRQ(evt2irq(0x440)),
49 };
50
51 static struct platform_device tmu0_device = {
52 .name = "sh-tmu",
53 .id = 0,
54 .dev = {
55 .platform_data = &tmu0_platform_data,
56 },
57 .resource = tmu0_resources,
58 .num_resources = ARRAY_SIZE(tmu0_resources),
59 };
60
61 static struct platform_device *sh4202_devices[] __initdata = {
62 &scif0_device,
63 &tmu0_device,
64 };
65
sh4202_devices_setup(void)66 static int __init sh4202_devices_setup(void)
67 {
68 return platform_add_devices(sh4202_devices,
69 ARRAY_SIZE(sh4202_devices));
70 }
71 arch_initcall(sh4202_devices_setup);
72
73 static struct platform_device *sh4202_early_devices[] __initdata = {
74 &scif0_device,
75 &tmu0_device,
76 };
77
plat_early_device_setup(void)78 void __init plat_early_device_setup(void)
79 {
80 sh_early_platform_add_devices(sh4202_early_devices,
81 ARRAY_SIZE(sh4202_early_devices));
82 }
83
84 enum {
85 UNUSED = 0,
86
87 /* interrupt sources */
88 IRL0, IRL1, IRL2, IRL3, /* only IRLM mode supported */
89 HUDI, TMU0, TMU1, TMU2, RTC, SCIF, WDT,
90 };
91
92 static struct intc_vect vectors[] __initdata = {
93 INTC_VECT(HUDI, 0x600),
94 INTC_VECT(TMU0, 0x400), INTC_VECT(TMU1, 0x420),
95 INTC_VECT(TMU2, 0x440), INTC_VECT(TMU2, 0x460),
96 INTC_VECT(RTC, 0x480), INTC_VECT(RTC, 0x4a0),
97 INTC_VECT(RTC, 0x4c0),
98 INTC_VECT(SCIF, 0x700), INTC_VECT(SCIF, 0x720),
99 INTC_VECT(SCIF, 0x740), INTC_VECT(SCIF, 0x760),
100 INTC_VECT(WDT, 0x560),
101 };
102
103 static struct intc_prio_reg prio_registers[] __initdata = {
104 { 0xffd00004, 0, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, RTC } },
105 { 0xffd00008, 0, 16, 4, /* IPRB */ { WDT, 0, 0, 0 } },
106 { 0xffd0000c, 0, 16, 4, /* IPRC */ { 0, 0, SCIF, HUDI } },
107 { 0xffd00010, 0, 16, 4, /* IPRD */ { IRL0, IRL1, IRL2, IRL3 } },
108 };
109
110 static DECLARE_INTC_DESC(intc_desc, "sh4-202", vectors, NULL,
111 NULL, prio_registers, NULL);
112
113 static struct intc_vect vectors_irlm[] __initdata = {
114 INTC_VECT(IRL0, 0x240), INTC_VECT(IRL1, 0x2a0),
115 INTC_VECT(IRL2, 0x300), INTC_VECT(IRL3, 0x360),
116 };
117
118 static DECLARE_INTC_DESC(intc_desc_irlm, "sh4-202_irlm", vectors_irlm, NULL,
119 NULL, prio_registers, NULL);
120
plat_irq_setup(void)121 void __init plat_irq_setup(void)
122 {
123 register_intc_controller(&intc_desc);
124 }
125
126 #define INTC_ICR 0xffd00000UL
127 #define INTC_ICR_IRLM (1<<7)
128
plat_irq_setup_pins(int mode)129 void __init plat_irq_setup_pins(int mode)
130 {
131 switch (mode) {
132 case IRQ_MODE_IRQ: /* individual interrupt mode for IRL3-0 */
133 __raw_writew(__raw_readw(INTC_ICR) | INTC_ICR_IRLM, INTC_ICR);
134 register_intc_controller(&intc_desc_irlm);
135 break;
136 default:
137 BUG();
138 }
139 }
140