1 files changed, 60 insertions, 0 deletions
diff --git a/arch/mips/jazz/jazz-platform.c b/arch/mips/jazz/jazz-platform.c
new file mode 100644
index 00000000000..fd736703eef
--- /dev/null
+++ b/arch/mips/jazz/jazz-platform.c
@@ -0,0 +1,60 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/serial_8250.h>
+
+#include <asm/jazz.h>
+
+/*
+ * Confusion ...  It seems the original Microsoft Jazz machine used to have a
+ * 4.096MHz clock for its UART while the MIPS Magnum and Millenium systems
+ * had 8MHz.  The Olivetti M700-10 and the Acer PICA have 1.8432MHz like PCs.
+ */
+#ifdef CONFIG_OLIVETTI_M700
+#define JAZZ_BASE_BAUD 1843200
+#else
+#define JAZZ_BASE_BAUD	8000000	/* 3072000 */
+#endif
+
+#define JAZZ_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
+
+#define JAZZ_PORT(base, int)						\
+{									\
+	.mapbase	= base,						\
+	.irq		= int,						\
+	.uartclk	= JAZZ_BASE_BAUD,				\
+	.iotype		= UPIO_MEM,					\
+	.flags		= JAZZ_UART_FLAGS,				\
+	.regshift	= 0,						\
+}
+
+static struct plat_serial8250_port uart8250_data[] = {
+	JAZZ_PORT(JAZZ_SERIAL1_BASE, JAZZ_SERIAL1_IRQ),
+	JAZZ_PORT(JAZZ_SERIAL2_BASE, JAZZ_SERIAL2_IRQ),
+	{ },
+};
+
+static struct platform_device uart8250_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM,
+	.dev			= {
+		.platform_data	= uart8250_data,
+	},
+};
+
+static int __init uart8250_init(void)
+{
+	return platform_device_register(&uart8250_device);
+}
+
+module_init(uart8250_init);
+
+MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("8250 UART probe driver for the Jazz family");