1 files changed, 82 insertions, 0 deletions
diff --git a/common/cmd_display.c b/common/cmd_display.c
new file mode 100644
index 0000000..abee844
--- /dev/null
+++ b/common/cmd_display.c
@@ -0,0 +1,82 @@
+/*
+ * (C) Copyright 2005
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that 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
+ */
+
+#include <common.h>
+#include <command.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_DISPLAY)
+
+#undef DEBUG_DISP
+
+#define DISP_SIZE	8
+#define CWORD_CLEAR	0x80
+#define CLEAR_DELAY	(110 * 2)
+
+int do_display (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	int i;
+	int pos;
+
+	/* Clear display */
+	*((volatile char*)(CFG_DISP_CWORD)) = CWORD_CLEAR;
+	udelay(1000 * CLEAR_DELAY);
+
+	if (argc < 2)
+		return (0);
+
+	for (pos = 0, i = 1; i < argc && pos < DISP_SIZE; i++) {
+		char *p = argv[i], c;
+
+		if (i > 1) {
+			*((volatile uchar *) (CFG_DISP_CHR_RAM + pos++)) = ' ';
+#ifdef DEBUG_DISP
+			putc(' ');
+#endif
+		}
+
+		while ((c = *p++) != '\0' && pos < DISP_SIZE) {
+			*((volatile uchar *) (CFG_DISP_CHR_RAM + pos++)) = c;
+#ifdef DEBUG_DISP
+			putc(c);
+#endif
+		}
+	}
+
+#ifdef DEBUG_DISP
+	putc('\n');
+#endif
+
+	return (0);
+}
+
+/***************************************************/
+
+U_BOOT_CMD(
+	display,	CFG_MAXARGS,	1,	do_display,
+	"display- display string on dot matrix display\n",
+	"[<string>]\n"
+	"    - with <string> argument: display <string> on dot matrix display\n"
+	"    - without arguments: clear dot matrix display\n"
+);
+
+#endif	/* CFG_CMD_DISPLAY */