we need different bus types

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

3 files changed, 79 insertions, 7 deletions

diff --git a/lib/Makefile b/lib/Makefile
index 2828fbe114..c52b06facb 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -6,6 +6,7 @@ obj-y			+= vsprintf.o
 obj-y			+= div64.o
 obj-y			+= misc.o
 obj-y			+= driver.o
+obj-y			+= bus.o
 obj-y			+= parameter.o
 obj-y			+= xfuncs.o
 obj-y			+= getopt.o
diff --git a/lib/bus.c b/lib/bus.c
new file mode 100644
index 0000000000..39170fe380
--- /dev/null
+++ b/lib/bus.c
@@ -0,0 +1,58 @@
+/*
+ * bus.c - U-Boot driver model
+ *
+ * Copyright (c) 2009 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ *
+ * 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 version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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 <driver.h>
+
+static int platform_match(struct device_d *dev, struct driver_d *drv)
+{
+	return strcmp(dev->name, drv->name) ? -1 : 0;
+}
+
+static int platform_probe(struct device_d *dev)
+{
+	return dev->driver->probe(dev);
+}
+
+static int platform_remove(struct device_d *dev)
+{
+	return dev->driver->remove(dev);
+}
+
+struct bus_type platform_bus = {
+	.name = "platform",
+	.match = platform_match,
+	.probe = platform_probe,
+	.remove = platform_remove,
+};
+
+#if 0
+LIST_HEAD(bus_list);
+EXPORT_SYMBOL(bus_list);
+
+int bus_register(struct bus_type *bus)
+{
+	list_add_tail(&bus->list, &bus_list);
+
+	return 0;
+}
+#endif
+
diff --git a/lib/driver.c b/lib/driver.c
index 9f0b14945a..6f49ca97d5 100644
--- a/lib/driver.c
+++ b/lib/driver.c
@@ -70,18 +70,21 @@ int get_free_deviceid(char *id, const char *id_template)
 
 static int match(struct driver_d *drv, struct device_d *dev)
 {
-	if (strcmp(dev->name, drv->name))
-		return -1;
-	if (dev->type != drv->type)
-		return -1;
-	if(drv->probe(dev))
-		return -1;
-
 	dev->driver = drv;
 
+	if (dev->bus != drv->bus)
+		goto err_out;
+	if (dev->bus->match(dev, drv))
+		goto err_out;
+	if (dev->bus->probe(dev))
+		goto err_out;
+
 	list_add(&dev->active, &active);
 
 	return 0;
+err_out:
+	dev->driver = NULL;
+	return -1;
 }
 
 int register_device(struct device_d *new_device)
@@ -94,6 +97,11 @@ int register_device(struct device_d *new_device)
 	}
 	debug ("register_device: %s\n",new_device->name);
 
+	if (!new_device->bus) {
+//		dev_err(new_device, "no bus type associated. Needs fixup\n");
+		new_device->bus = &platform_bus;
+	}
+
 	list_add_tail(&new_device->list, &device_list);
 	INIT_LIST_HEAD(&new_device->children);
 
@@ -165,6 +173,11 @@ int register_driver(struct driver_d *drv)
 
 	debug("register_driver: %s\n", drv->name);
 
+	if (!drv->bus) {
+//		pr_err("driver %s has no bus type associated. Needs fixup\n", drv->name);
+		drv->bus = &platform_bus;
+	}
+
 	list_add_tail(&drv->list, &driver_list);
 
 	if (!drv->info)