1/*
2 *  Registration of Cobalt UART platform device.
3 *
4 *  Copyright (C) 2007  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
5 *
6 *  This program is free software; you can redistribute it and/or modify
7 *  it under the terms of the GNU General Public License as published by
8 *  the Free Software Foundation; either version 2 of the License, or
9 *  (at your option) any later version.
10 *
11 *  This program is distributed in the hope that it will be useful,
12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 *  GNU General Public License for more details.
15 *
16 *  You should have received a copy of the GNU General Public License
17 *  along with this program; if not, write to the Free Software
18 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
19 */
20#include <linux/errno.h>
21#include <linux/init.h>
22#include <linux/ioport.h>
23#include <linux/platform_device.h>
24#include <linux/serial_8250.h>
25
26#include <cobalt.h>
27
28static struct resource cobalt_uart_resource[] __initdata = {
29	{
30		.start	= 0x1c800000,
31		.end	= 0x1c800007,
32		.flags	= IORESOURCE_MEM,
33	},
34	{
35		.start	= COBALT_SERIAL_IRQ,
36		.end	= COBALT_SERIAL_IRQ,
37		.flags	= IORESOURCE_IRQ,
38	},
39};
40
41static struct plat_serial8250_port cobalt_serial8250_port[] = {
42	{
43		.irq		= COBALT_SERIAL_IRQ,
44		.uartclk	= 18432000,
45		.iotype		= UPIO_MEM,
46		.flags		= UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
47		.mapbase	= 0x1c800000,
48	},
49	{},
50};
51
52static __init int cobalt_uart_add(void)
53{
54	struct platform_device *pdev;
55	int retval;
56
57	/*
58	 * Cobalt Qube1 and RAQ1 have no UART.
59	 */
60	if (cobalt_board_id <= COBALT_BRD_ID_RAQ1)
61		return 0;
62
63	pdev = platform_device_alloc("serial8250", -1);
64	if (!pdev)
65		return -ENOMEM;
66
67	pdev->id = PLAT8250_DEV_PLATFORM;
68	pdev->dev.platform_data = cobalt_serial8250_port;
69
70	retval = platform_device_add_resources(pdev, cobalt_uart_resource, ARRAY_SIZE(cobalt_uart_resource));
71	if (retval)
72		goto err_free_device;
73
74	retval = platform_device_add(pdev);
75	if (retval)
76		goto err_free_device;
77
78	return 0;
79
80err_free_device:
81	platform_device_put(pdev);
82
83	return retval;
84}
85device_initcall(cobalt_uart_add);
86