1 files changed, 64 insertions, 0 deletions

diff --git a/arch/mips/mti-malta/malta-display.c b/arch/mips/mti-malta/malta-display.c
new file mode 100644
index 000000000000..7c8828fcb0ad
--- /dev/null
+++ b/arch/mips/mti-malta/malta-display.c
@@ -0,0 +1,64 @@
+/*
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope it will be useful, but WITHOUT
+ *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ *  for more details.
+ *
+ *  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.,
+ *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Display routines for display messages in MIPS boards ascii display.
+ */
+
+#include <linux/compiler.h>
+#include <linux/timer.h>
+#include <asm/io.h>
+#include <asm/mips-boards/generic.h>
+#include <asm/mips-boards/prom.h>
+
+extern const char display_string[];
+static unsigned int display_count;
+static unsigned int max_display_count;
+
+void mips_display_message(const char *str)
+{
+        static unsigned int __iomem *display = NULL;
+        int i;
+
+        if (unlikely(display == NULL))
+                display = ioremap(ASCII_DISPLAY_POS_BASE, 16*sizeof(int));
+
+        for (i = 0; i <= 14; i=i+2) {
+                 if (*str)
+                         __raw_writel(*str++, display + i);
+                 else
+                         __raw_writel(' ', display + i);
+        }
+}
+
+static void scroll_display_message(unsigned long data);
+static DEFINE_TIMER(mips_scroll_timer, scroll_display_message, HZ, 0);
+
+static void scroll_display_message(unsigned long data)
+{
+        mips_display_message(&display_string[display_count++]);
+        if (display_count == max_display_count)
+                display_count = 0;
+
+        mod_timer(&mips_scroll_timer, jiffies + HZ);
+}
+
+void mips_scroll_message(void)
+{
+        del_timer_sync(&mips_scroll_timer);
+        max_display_count = strlen(display_string) + 1 - 8;
+        mod_timer(&mips_scroll_timer, jiffies + 1);
+}