1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2006, 07 MIPS Technologies, Inc.
7 *   written by Ralf Baechle (ralf@linux-mips.org)
8 *     written by Ralf Baechle <ralf@linux-mips.org>
9 *
10 * Copyright (C) 2008 Wind River Systems, Inc.
11 *   updated by Tiejun Chen <tiejun.chen@windriver.com>
12 *
13 * 1. Probe driver for the Malta's UART ports:
14 *
15 *   o 2 ports in the SMC SuperIO
16 *   o 1 port in the CBUS UART, a discrete 16550 which normally is only used
17 *     for bringups.
18 *
19 * We don't use 8250_platform.c on Malta as it would result in the CBUS
20 * UART becoming ttyS0.
21 *
22 * 2. Register RTC-CMOS platform device on Malta.
23 */
24#include <linux/init.h>
25#include <linux/serial_8250.h>
26#include <linux/mc146818rtc.h>
27#include <linux/module.h>
28#include <linux/irq.h>
29#include <linux/mtd/partitions.h>
30#include <linux/mtd/physmap.h>
31#include <linux/platform_device.h>
32#include <asm/mips-boards/maltaint.h>
33#include <mtd/mtd-abi.h>
34
35#define SMC_PORT(base, int)						\
36{									\
37	.iobase		= base,						\
38	.irq		= int,						\
39	.uartclk	= 1843200,					\
40	.iotype		= UPIO_PORT,					\
41	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,		\
42	.regshift	= 0,						\
43}
44
45#define CBUS_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
46
47static struct plat_serial8250_port uart8250_data[] = {
48	SMC_PORT(0x3F8, 4),
49	SMC_PORT(0x2F8, 3),
50#ifndef CONFIG_MIPS_CMP
51	{
52		.mapbase	= 0x1f000900,	/* The CBUS UART */
53		.irq		= MIPS_CPU_IRQ_BASE + MIPSCPU_INT_MB2,
54		.uartclk	= 3686400,	/* Twice the usual clk! */
55		.iotype		= UPIO_MEM32,
56		.flags		= CBUS_UART_FLAGS,
57		.regshift	= 3,
58	},
59#endif
60	{ },
61};
62
63static struct platform_device malta_uart8250_device = {
64	.name			= "serial8250",
65	.id			= PLAT8250_DEV_PLATFORM,
66	.dev			= {
67		.platform_data	= uart8250_data,
68	},
69};
70
71struct resource malta_rtc_resources[] = {
72	{
73		.start	= RTC_PORT(0),
74		.end	= RTC_PORT(7),
75		.flags	= IORESOURCE_IO,
76	}, {
77		.start	= RTC_IRQ,
78		.end	= RTC_IRQ,
79		.flags	= IORESOURCE_IRQ,
80	}
81};
82
83static struct platform_device malta_rtc_device = {
84	.name		= "rtc_cmos",
85	.id		= -1,
86	.resource	= malta_rtc_resources,
87	.num_resources	= ARRAY_SIZE(malta_rtc_resources),
88};
89
90static struct mtd_partition malta_mtd_partitions[] = {
91	{
92		.name =		"YAMON",
93		.offset =	0x0,
94		.size =		0x100000,
95		.mask_flags =	MTD_WRITEABLE
96	}, {
97		.name =		"User FS",
98		.offset =	0x100000,
99		.size =		0x2e0000
100	}, {
101		.name =		"Board Config",
102		.offset =	0x3e0000,
103		.size =		0x020000,
104		.mask_flags =	MTD_WRITEABLE
105	}
106};
107
108static struct physmap_flash_data malta_flash_data = {
109	.width		= 4,
110	.nr_parts	= ARRAY_SIZE(malta_mtd_partitions),
111	.parts		= malta_mtd_partitions
112};
113
114static struct resource malta_flash_resource = {
115	.start		= 0x1e000000,
116	.end		= 0x1e3fffff,
117	.flags		= IORESOURCE_MEM
118};
119
120static struct platform_device malta_flash_device = {
121	.name		= "physmap-flash",
122	.id		= 0,
123	.dev		= {
124		.platform_data	= &malta_flash_data,
125	},
126	.num_resources	= 1,
127	.resource	= &malta_flash_resource,
128};
129
130static struct platform_device *malta_devices[] __initdata = {
131	&malta_uart8250_device,
132	&malta_rtc_device,
133	&malta_flash_device,
134};
135
136static int __init malta_add_devices(void)
137{
138	int err;
139
140	err = platform_add_devices(malta_devices, ARRAY_SIZE(malta_devices));
141	if (err)
142		return err;
143
144	return 0;
145}
146
147device_initcall(malta_add_devices);
148