1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * linux/arch/arm/mach-footbridge/isa.c
4 *
5 * Copyright (C) 2004 Russell King.
6 */
7 #include <linux/init.h>
8 #include <linux/serial_8250.h>
9
10 #include <asm/irq.h>
11 #include <asm/hardware/dec21285.h>
12
13 #include "common.h"
14
15 static struct resource rtc_resources[] = {
16 [0] = {
17 .start = 0x70,
18 .end = 0x73,
19 .flags = IORESOURCE_IO,
20 },
21 [1] = {
22 .start = IRQ_ISA_RTC_ALARM,
23 .end = IRQ_ISA_RTC_ALARM,
24 .flags = IORESOURCE_IRQ,
25 }
26 };
27
28 static struct platform_device rtc_device = {
29 .name = "rtc_cmos",
30 .id = -1,
31 .resource = rtc_resources,
32 .num_resources = ARRAY_SIZE(rtc_resources),
33 };
34
35 static struct resource serial_resources[] = {
36 [0] = {
37 .start = 0x3f8,
38 .end = 0x3ff,
39 .flags = IORESOURCE_IO,
40 },
41 [1] = {
42 .start = 0x2f8,
43 .end = 0x2ff,
44 .flags = IORESOURCE_IO,
45 },
46 };
47
48 static struct plat_serial8250_port serial_platform_data[] = {
49 {
50 .iobase = 0x3f8,
51 .irq = IRQ_ISA_UART,
52 .uartclk = 1843200,
53 .regshift = 0,
54 .iotype = UPIO_PORT,
55 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
56 },
57 {
58 .iobase = 0x2f8,
59 .irq = IRQ_ISA_UART2,
60 .uartclk = 1843200,
61 .regshift = 0,
62 .iotype = UPIO_PORT,
63 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
64 },
65 { },
66 };
67
68 static struct platform_device serial_device = {
69 .name = "serial8250",
70 .id = PLAT8250_DEV_PLATFORM,
71 .dev = {
72 .platform_data = serial_platform_data,
73 },
74 .resource = serial_resources,
75 .num_resources = ARRAY_SIZE(serial_resources),
76 };
77
footbridge_isa_init(void)78 static int __init footbridge_isa_init(void)
79 {
80 int err = 0;
81
82 if (!footbridge_cfn_mode())
83 return 0;
84
85 /* Personal server doesn't have RTC */
86 if (!machine_is_personal_server()) {
87 isa_rtc_init();
88 err = platform_device_register(&rtc_device);
89 if (err)
90 printk(KERN_ERR "Unable to register RTC device: %d\n", err);
91 }
92 err = platform_device_register(&serial_device);
93 if (err)
94 printk(KERN_ERR "Unable to register serial device: %d\n", err);
95 return 0;
96 }
97
98 arch_initcall(footbridge_isa_init);
99