[PATCH v3 03/46] usb: gadget: add endpoint capabilities helper macros

Robert Baldyga r.baldyga at samsung.com
Tue Jul 14 23:31:50 PDT 2015


Add macros useful while initializing array of endpoint capabilities
structures. These macros makes structure initialization more compact
to decrease number of code lines and increase readability of code.

Signed-off-by: Robert Baldyga <r.baldyga at samsung.com>
---
 include/linux/usb/gadget.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 6f3e0fb..e6cbc25 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -158,6 +158,26 @@ struct usb_ep_caps {
 	unsigned dir_out:1;
 };
 
+#define USB_EP_CAPS_TYPE_CONTROL     0x01
+#define USB_EP_CAPS_TYPE_ISO         0x02
+#define USB_EP_CAPS_TYPE_BULK        0x04
+#define USB_EP_CAPS_TYPE_INT         0x08
+#define USB_EP_CAPS_TYPE_ALL \
+	(USB_EP_CAPS_TYPE_ISO | USB_EP_CAPS_TYPE_BULK | USB_EP_CAPS_TYPE_INT)
+#define USB_EP_CAPS_DIR_IN           0x01
+#define USB_EP_CAPS_DIR_OUT          0x02
+#define USB_EP_CAPS_DIR_ALL  (USB_EP_CAPS_DIR_IN | USB_EP_CAPS_DIR_OUT)
+
+#define USB_EP_CAPS(_type, _dir) \
+	{ \
+		.type_control = !!(_type & USB_EP_CAPS_TYPE_CONTROL), \
+		.type_iso = !!(_type & USB_EP_CAPS_TYPE_ISO), \
+		.type_bulk = !!(_type & USB_EP_CAPS_TYPE_BULK), \
+		.type_int = !!(_type & USB_EP_CAPS_TYPE_INT), \
+		.dir_in = !!(_dir & USB_EP_CAPS_DIR_IN), \
+		.dir_out = !!(_dir & USB_EP_CAPS_DIR_OUT), \
+	}
+
 /**
  * struct usb_ep - device side representation of USB endpoint
  * @name:identifier for the endpoint, such as "ep-a" or "ep9in-bulk"
-- 
1.9.1




More information about the linux-arm-kernel mailing list