[deliverable/linux.git] / arch / mips / rb532 / serial.c

/*
 *  BRIEF MODULE DESCRIPTION
 *     Serial port initialisation.
 *
 *  Copyright 2004 IDT Inc. (rischelp@idt.com)
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/init.h>
#include <linux/tty.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>

#include <asm/serial.h>
#include <asm/mach-rc32434/rb.h>

extern unsigned int idt_cpu_freq;

static struct uart_port rb532_uart = {
	.flags = UPF_BOOT_AUTOCONF,
	.line = 0,
	.irq = UART0_IRQ,
	.iotype = UPIO_MEM,
	.membase = (char *)KSEG1ADDR(REGBASE + UART0BASE),
	.regshift = 2
};

int __init setup_serial_port(void)
{
	rb532_uart.uartclk = idt_cpu_freq;

	return early_serial_setup(&rb532_uart);
}
arch_initcall(setup_serial_port);
Commit	Line	Data
73b4390f RB	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
	33	#include <asm/serial.h>
606a083b	34	#include <asm/mach-rc32434/rb.h>
73b4390f RB	35
	36	extern unsigned int idt_cpu_freq;
	37
	38	static struct uart_port rb532_uart = {
1452fc7d	39	.flags = UPF_BOOT_AUTOCONF,
73b4390f	40	.line = 0,
606a083b	41	.irq = UART0_IRQ,
73b4390f	42	.iotype = UPIO_MEM,
606a083b	43	.membase = (char *)KSEG1ADDR(REGBASE + UART0BASE),
73b4390f RB	44	.regshift = 2
	45	};
	46
	47	int __init setup_serial_port(void)
	48	{
	49	rb532_uart.uartclk = idt_cpu_freq;
	50
	51	return early_serial_setup(&rb532_uart);
	52	}
	53	arch_initcall(setup_serial_port);