[U-Boot] [PATCH 06/11] [U-BOOT][ZOOM3] Initial support - adding board files (debug_board.c)

[Aldo Cedillo]

From: Aldo Brett Cedillo Martinez <aldo.cedillo at ti.com>

Signed-off-by: Aldo Brett Cedillo Martinez <aldo.cedillo at ti.com>
---
 board/logicpd/zoom3/debug_board.c |   66 +++++++++++++++++++++++++++++++++++++
 1 files changed, 66 insertions(+), 0 deletions(-)
 create mode 100644 board/logicpd/zoom3/debug_board.c

diff --git a/board/logicpd/zoom3/debug_board.c b/board/logicpd/zoom3/debug_board.c
new file mode 100644
index 0000000..0520257
--- /dev/null
+++ b/board/logicpd/zoom3/debug_board.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2010 Wind River Systems, Inc.
+ * Tom Rix <Tom.Rix at windriver.com>
+ * Aldo Cedillo <aldo.cedillo at ti.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 zoom3_debug_board_detect(void)
+{
+	int val = 0;
+
+	/*
+	 * TODO gpio 158 is UART1_RX, should we make a macro of this
+	 * instead of the raw number?
+	 */
+	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 zoom3_debug_board_connected(void)
+{
+	static int first_time = 1;
+
+	if (first_time) {
+		zoom3_debug_board_detect();
+		first_time = 0;
+	}
+
+	return debug_board_connected;
+}
-- 
1.6.3.3