diff options
Diffstat (limited to 'kernel/arch/mips/rb532/serial.c')
-rw-r--r-- | kernel/arch/mips/rb532/serial.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/kernel/arch/mips/rb532/serial.c b/kernel/arch/mips/rb532/serial.c new file mode 100644 index 000000000..70482540b --- /dev/null +++ b/kernel/arch/mips/rb532/serial.c @@ -0,0 +1,54 @@ +/* + * 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 <linux/irq.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); |