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 | |
37 | extern unsigned int idt_cpu_freq; |
38 | |
39 | static 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 | |
48 | int __init setup_serial_port(void) |
49 | { |
50 | rb532_uart.uartclk = idt_cpu_freq; |
51 | |
52 | return early_serial_setup(port: &rb532_uart); |
53 | } |
54 | arch_initcall(setup_serial_port); |
55 | |