driver: register bus

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

3 files changed, 39 insertions, 10 deletions

diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index 957ca5ac2a..e1f1c7a0ad 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -1,3 +1,4 @@
+obj-y	+= bus.o
 obj-y	+= driver.o
 obj-y	+= platform.o
 obj-y	+= resource.o
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
new file mode 100644
index 0000000000..f80363d5a7
--- /dev/null
+++ b/drivers/base/bus.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Under GPLv2
+ */
+
+#include <common.h>
+#include <driver.h>
+#include <errno.h>
+
+LIST_HEAD(bus_list);
+EXPORT_SYMBOL(bus_list);
+
+struct bus_type *get_bus_by_name(const char *name)
+{
+	struct bus_type *bus;
+
+	for_each_bus(bus) {
+		if(!strcmp(bus->name, name))
+			return bus;
+	}
+
+	return NULL;
+}
+
+int bus_register(struct bus_type *bus)
+{
+	if (get_bus_by_name(bus->name))
+		return -EEXIST;
+
+	list_add_tail(&bus->list, &bus_list);
+
+	return 0;
+}
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 9b0b1cc673..8c80e8e26d 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -22,6 +22,7 @@
 #include <common.h>
 #include <driver.h>
 #include <errno.h>
+#include <init.h>
 
 static int platform_match(struct device_d *dev, struct driver_d *drv)
 {
@@ -64,15 +65,8 @@ struct bus_type platform_bus = {
 	.remove = platform_remove,
 };
 
-#if 0
-LIST_HEAD(bus_list);
-EXPORT_SYMBOL(bus_list);
-
-int bus_register(struct bus_type *bus)
+static int plarform_init(void)
 {
-	list_add_tail(&bus->list, &bus_list);
-
-	return 0;
+	return bus_register(&platform_bus);
 }
-#endif
-
+pure_initcall(plarform_init);