Moved from freebios

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@862 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 99 insertions, 0 deletions

diff --git a/src/northbridge/motorola/mpc107/i2c.c b/src/northbridge/motorola/mpc107/i2c.c
new file mode 100644
index 0000000000..4ead02331b
--- /dev/null
+++ b/src/northbridge/motorola/mpc107/i2c.c
@@ -0,0 +1,99 @@
+/* $Id$
+ * (C) Copyright 2002
+ * Humboldt Solutions Ltd, <adrian@humboldt.co.uk>
+ *
+ * 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 <types.h>
+#include <stdlib.h>
+#include <string.h>
+#include "i2c.h"
+
+static i2c_bus *first_i2c = NULL;
+
+#if 0
+int register_i2c_bus(const i2c_fn *fn, char *tag, void *data)
+{
+    i2c_bus *bus = malloc (sizeof (i2c_bus));
+
+    if (bus)
+    {
+	bus->fn = fn;
+	bus->tag = tag;
+	bus->data = data;
+	bus->next = first_i2c;
+	first_i2c = bus;
+	return 0;
+    }
+    return -1;
+}
+#endif
+
+i2c_bus *find_i2c_bus(const char *name)
+{
+    int len;
+
+    if (! name)
+	return first_i2c;
+    
+    if (first_i2c)
+    {
+	i2c_bus *i2c;
+
+	len = strlen(name);
+
+	for (i2c = first_i2c; i2c; i2c = i2c->next)
+	    if (strlen(i2c->tag) == len && memcmp (name, i2c->tag, len) == 0)
+		return i2c;
+    }
+    return NULL;
+}
+
+void i2c_start(struct i2c_bus *bus)
+{
+    if (! bus)
+	bus = first_i2c;
+
+    bus->fn->start(bus);   
+}
+
+void i2c_stop(struct i2c_bus *bus)
+{
+    if (! bus)
+	bus = first_i2c;
+
+    bus->fn->stop(bus);   
+}
+
+int i2c_master_write(struct i2c_bus *bus, int target, int address,
+	    const u8 *data, int length)
+{
+    if (! bus)
+	bus = first_i2c;
+
+    return bus->fn->master_write(bus, target, address, data, length);   
+}
+
+int i2c_master_read(struct i2c_bus *bus, int target, int address,
+	    u8 *data, int length)
+{
+    if (! bus)
+	bus = first_i2c;
+
+    return bus->fn->master_read(bus, target, address, data, length);   
+}
+