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Diffstat (limited to 'board/omap3/zoom2/debug_board.c')
-rw-r--r--board/omap3/zoom2/debug_board.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/board/omap3/zoom2/debug_board.c b/board/omap3/zoom2/debug_board.c
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+++ b/board/omap3/zoom2/debug_board.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2009 Wind River Systems, Inc.
+ * Tom Rix <Tom.Rix@windriver.com>
+ *
+ * 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 <asm/arch/cpu.h>
+#include <asm/io.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/gpio.h>
+
+#define DEBUG_BOARD_CONNECTED 1
+#define DEBUG_BOARD_NOT_CONNECTED 0
+
+static int debug_board_connected = DEBUG_BOARD_CONNECTED;
+
+static void zoom2_debug_board_detect (void)
+{
+ int val = 0;
+
+ if (!omap_request_gpio(158)) {
+ /*
+ * GPIO to query for debug board
+ * 158 db board query
+ */
+ omap_set_gpio_direction(158, 1);
+ val = omap_get_gpio_datain(158);
+ omap_free_gpio(158);
+ }
+
+ if (!val)
+ debug_board_connected = DEBUG_BOARD_NOT_CONNECTED;
+}
+
+int zoom2_debug_board_connected (void)
+{
+ static int first_time = 1;
+
+ if (first_time) {
+ zoom2_debug_board_detect ();
+ first_time = 0;
+ }
+ return debug_board_connected;
+}