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 000000000000..fd736703eef2
--- /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");