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(&rb532_uart); 53 } 54 arch_initcall(setup_serial_port); 55