introduce notion of 'driver'

Change-Id: Ic168e25f2622b397bac2c133ec35f4a0a38f859b

3 files changed, 12 insertions, 0 deletions

diff --git a/src/e1d.h b/src/e1d.h
index 303757f..c1a28ce 100644
--- a/src/e1d.h
+++ b/src/e1d.h
@@ -65,12 +65,19 @@ struct e1_line {
 	struct e1_ts ts[32];
 };
 
+enum e1_driver {
+	E1_DRIVER_USB,
+};
+
+extern const struct value_string e1_driver_names[];
+
 struct e1_intf {
 	struct llist_head list;
 
 	struct e1_daemon *e1d;
 	uint8_t id;
 
+	enum e1_driver drv;
 	void *drv_data;
 
 	struct llist_head lines;
diff --git a/src/intf_line.c b/src/intf_line.c
index c3466e0..f572190 100644
--- a/src/intf_line.c
+++ b/src/intf_line.c
@@ -34,6 +34,10 @@
 #include "e1d.h"
 #include "log.h"
 
+const struct value_string e1_driver_names[] = {
+	{ E1_DRIVER_USB, "usb" },
+	{ 0, NULL }
+};
 
 // ---------------------------------------------------------------------------
 // e1d structures
diff --git a/src/usb.c b/src/usb.c
index 8cf96b4..5d38d32 100644
--- a/src/usb.c
+++ b/src/usb.c
@@ -300,6 +300,7 @@ _e1_usb_open_device(struct e1_daemon *e1d, struct libusb_device *dev)
 	intf_data->devh = devh;
 
 	intf = e1_intf_new(e1d, intf_data);
+	intf->drv = E1_DRIVER_USB;
 
 	ret = libusb_get_active_config_descriptor(dev, &cd);
 	if (ret) {