1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * BRIEF MODULE DESCRIPTION
3*4882a593Smuzhiyun * Serial port initialisation.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2004 IDT Inc. (rischelp@idt.com)
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * This program is free software; you can redistribute it and/or modify it
8*4882a593Smuzhiyun * under the terms of the GNU General Public License as published by the
9*4882a593Smuzhiyun * Free Software Foundation; either version 2 of the License, or (at your
10*4882a593Smuzhiyun * option) any later version.
11*4882a593Smuzhiyun *
12*4882a593Smuzhiyun * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
13*4882a593Smuzhiyun * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
14*4882a593Smuzhiyun * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
15*4882a593Smuzhiyun * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
16*4882a593Smuzhiyun * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
17*4882a593Smuzhiyun * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
18*4882a593Smuzhiyun * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
19*4882a593Smuzhiyun * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
20*4882a593Smuzhiyun * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
21*4882a593Smuzhiyun * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
22*4882a593Smuzhiyun *
23*4882a593Smuzhiyun * You should have received a copy of the GNU General Public License along
24*4882a593Smuzhiyun * with this program; if not, write to the Free Software Foundation, Inc.,
25*4882a593Smuzhiyun * 675 Mass Ave, Cambridge, MA 02139, USA.
26*4882a593Smuzhiyun */
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun #include <linux/init.h>
29*4882a593Smuzhiyun #include <linux/tty.h>
30*4882a593Smuzhiyun #include <linux/serial_core.h>
31*4882a593Smuzhiyun #include <linux/serial_8250.h>
32*4882a593Smuzhiyun #include <linux/irq.h>
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun #include <asm/serial.h>
35*4882a593Smuzhiyun #include <asm/mach-rc32434/rb.h>
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun extern unsigned int idt_cpu_freq;
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun static struct uart_port rb532_uart = {
40*4882a593Smuzhiyun .flags = UPF_BOOT_AUTOCONF,
41*4882a593Smuzhiyun .line = 0,
42*4882a593Smuzhiyun .irq = UART0_IRQ,
43*4882a593Smuzhiyun .iotype = UPIO_MEM,
44*4882a593Smuzhiyun .membase = (char *)KSEG1ADDR(REGBASE + UART0BASE),
45*4882a593Smuzhiyun .regshift = 2
46*4882a593Smuzhiyun };
47*4882a593Smuzhiyun
setup_serial_port(void)48*4882a593Smuzhiyun int __init setup_serial_port(void)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun rb532_uart.uartclk = idt_cpu_freq;
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun return early_serial_setup(&rb532_uart);
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun arch_initcall(setup_serial_port);
55