blob: 53b8d0d6da90824ccc2d4447526f205bf36ed506 [file] [log] [blame]
Yoichi Yuasafb82a3a2007-05-11 21:29:59 +09001/*
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>
Yoichi Yuasad5ab1a62007-09-13 23:51:26 +090027#include <irq.h>
Yoichi Yuasafb82a3a2007-05-11 21:29:59 +090028
29static struct resource cobalt_uart_resource[] __initdata = {
30 {
31 .start = 0x1c800000,
32 .end = 0x1c800007,
33 .flags = IORESOURCE_MEM,
34 },
35 {
Yoichi Yuasad5ab1a62007-09-13 23:51:26 +090036 .start = SERIAL_IRQ,
37 .end = SERIAL_IRQ,
Yoichi Yuasafb82a3a2007-05-11 21:29:59 +090038 .flags = IORESOURCE_IRQ,
39 },
40};
41
42static struct plat_serial8250_port cobalt_serial8250_port[] = {
43 {
Yoichi Yuasad5ab1a62007-09-13 23:51:26 +090044 .irq = SERIAL_IRQ,
Yoichi Yuasafb82a3a2007-05-11 21:29:59 +090045 .uartclk = 18432000,
46 .iotype = UPIO_MEM,
47 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
48 .mapbase = 0x1c800000,
49 },
50 {},
51};
52
53static __init int cobalt_uart_add(void)
54{
55 struct platform_device *pdev;
56 int retval;
57
58 /*
Martin Michlmayrac1a2362007-07-29 22:19:02 +020059 * Cobalt Qube1 has no UART.
Yoichi Yuasafb82a3a2007-05-11 21:29:59 +090060 */
Martin Michlmayrac1a2362007-07-29 22:19:02 +020061 if (cobalt_board_id == COBALT_BRD_ID_QUBE1)
Yoichi Yuasafb82a3a2007-05-11 21:29:59 +090062 return 0;
63
64 pdev = platform_device_alloc("serial8250", -1);
65 if (!pdev)
66 return -ENOMEM;
67
68 pdev->id = PLAT8250_DEV_PLATFORM;
69 pdev->dev.platform_data = cobalt_serial8250_port;
70
71 retval = platform_device_add_resources(pdev, cobalt_uart_resource, ARRAY_SIZE(cobalt_uart_resource));
72 if (retval)
73 goto err_free_device;
74
75 retval = platform_device_add(pdev);
76 if (retval)
77 goto err_free_device;
78
79 return 0;
80
81err_free_device:
82 platform_device_put(pdev);
83
84 return retval;
85}
86device_initcall(cobalt_uart_add);