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-rw-r--r--arch/mips/mti-malta/malta-display.c64
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
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index 00000000000..7c8828fcb0a
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+++ 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);
+}