1/*
2 *  BRIEF MODULE DESCRIPTION
3 *     Serial port initialisation.
4 *
5 *  Copyright 2004 IDT Inc. (rischelp@idt.com)
6 *
7 *  This program is free software; you can redistribute  it and/or modify it
8 *  under  the terms of  the GNU General  Public License as published by the
9 *  Free Software Foundation;  either version 2 of the  License, or (at your
10 *  option) any later version.
11 *
12 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
13 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
14 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
15 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
16 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
17 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
18 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
19 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
20 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
21 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
22 *
23 *  You should have received a copy of the  GNU General Public License along
24 *  with this program; if not, write  to the Free Software Foundation, Inc.,
25 *  675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28#include <linux/init.h>
29#include <linux/tty.h>
30#include <linux/serial_core.h>
31#include <linux/serial_8250.h>
32#include <linux/irq.h>
33
34#include <asm/serial.h>
35#include <asm/mach-rc32434/rb.h>
36
37extern unsigned int idt_cpu_freq;
38
39static struct uart_port rb532_uart = {
40	.flags = UPF_BOOT_AUTOCONF,
41	.line = 0,
42	.irq = UART0_IRQ,
43	.iotype = UPIO_MEM,
44	.membase = (char *)KSEG1ADDR(REGBASE + UART0BASE),
45	.regshift = 2
46};
47
48int __init setup_serial_port(void)
49{
50	rb532_uart.uartclk = idt_cpu_freq;
51
52	return early_serial_setup(&rb532_uart);
53}
54arch_initcall(setup_serial_port);
55