driver: Add platform_device_id mechanism

It is common for drivers to handle multiple similar devices. On
Linux the driver can distinguish between the devices using the
platform_device_id mechanism. Introduce the same for barebox.

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

1 files changed, 16 insertions, 1 deletions

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index e0dd9ea58e..82d2521a2e 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -24,7 +24,22 @@
 
 static int platform_match(struct device_d *dev, struct driver_d *drv)
 {
-	return strcmp(dev->name, drv->name) ? -1 : 0;
+	if (!strcmp(dev->name, drv->name))
+		return 0;
+
+	if (drv->id_table) {
+		struct platform_device_id *id = drv->id_table;
+
+		while (id->name) {
+			if (!strcmp(id->name, dev->name)) {
+				dev->id_entry = id;
+				return 0;
+			}
+			id++;
+		}
+	}
+
+	return -1;
 }
 
 static int platform_probe(struct device_d *dev)