patch-2.4.19 linux-2.4.19/arch/mips/vr4181/common/serial.c

• Lines: 52
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/vr4181/common/serial.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/mips/vr4181/common/serial.c linux-2.4.19/arch/mips/vr4181/common/serial.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
+ *
+ * arch/mips/vr4181/common/serial.c
+ *     initialize serial port on vr4181.
+ *
+ * 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.
+ *
+ */
+
+/*
+ * [jsun, 010925]
+ * You need to make sure rs_table has at least one element in 
+ * drivers/char/serial.c file.	There is no good way to do it right
+ * now.	 A workaround is to include CONFIG_SERIAL_MANY_PORTS in your
+ * configure file, which would gives you 64 ports and wastes 11K ram.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/serial.h>
+
+#include <asm/vr4181/vr4181.h>
+
+void __init vr4181_init_serial(void)
+{
+	struct serial_struct s;
+
+	/* turn on UART clock */
+	*VR4181_CMUCLKMSK |= VR4181_CMUCLKMSK_MSKSIU;
+
+	/* clear memory */
+	memset(&s, 0, sizeof(s));
+
+	s.line = 0;			/* we set the first one */
+	s.baud_base = 1152000;
+	s.irq = VR4181_IRQ_SIU;
+	s.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST; /* STD_COM_FLAGS */
+	s.iomem_base = (u8*)VR4181_SIURB;
+	s.iomem_reg_shift = 0;
+	s.io_type = SERIAL_IO_MEM;
+	if (early_serial_setup(&s) != 0) {
+		panic("vr4181_init_serial() failed!");
+	}
+}
+