1 files changed, 55 insertions, 0 deletions
diff --git a/post/i2c.c b/post/i2c.c
new file mode 100644
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--- /dev/null
+++ b/post/i2c.c
@@ -0,0 +1,55 @@
+/*
+ * (C) Copyright 2002
+ * 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>
+
+#ifdef CONFIG_POST
+
+/*
+ * I2C test
+ *
+ * For verifying the I2C bus, a full I2C bus scanning is performed.
+ * If any I2C device is found, the test is considered as passed,
+ * otherwise failed.
+ */
+
+#include <post.h>
+#include <i2c.h>
+
+#if CONFIG_POST & CFG_POST_I2C
+
+int i2c_post_test (int flags)
+{
+	unsigned int i;
+	unsigned int chips = 0;
+
+	for (i = 0; i < 128; i++) {
+		if (i2c_probe (i) == 0)
+			chips++;
+	}
+
+	return chips > 0 ? 0 : -1;
+}
+
+#endif /* CONFIG_POST & CFG_POST_I2C */
+#endif /* CONFIG_POST */