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-rw-r--r--include/linux/usb.h59
1 files changed, 56 insertions, 3 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index dea39dc551d4..30d1ae38eab1 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -77,14 +77,15 @@ struct usb_host_endpoint {
struct usb_host_interface {
struct usb_interface_descriptor desc;
+ int extralen;
+ unsigned char *extra; /* Extra descriptors */
+
/* array of desc.bNumEndpoint endpoints associated with this
* interface setting. these will be in no particular order.
*/
struct usb_host_endpoint *endpoint;
char *string; /* iInterface string, if present */
- unsigned char *extra; /* Extra descriptors */
- int extralen;
};
enum usb_interface_condition {
@@ -331,6 +332,11 @@ struct usb_bus {
u8 otg_port; /* 0, or number of OTG/HNP port */
unsigned is_b_host:1; /* true during some HNP roleswitches */
unsigned b_hnp_enable:1; /* OTG: did A-Host enable HNP? */
+ unsigned no_stop_on_short:1; /*
+ * Quirk: some controllers don't stop
+ * the ep queue on a short transfer
+ * with the URB_SHORT_NOT_OK flag set.
+ */
unsigned sg_tablesize; /* 0 or largest number of sg list entries */
int devnum_next; /* Next open device number in
@@ -556,7 +562,6 @@ struct usb_device {
struct usb3_lpm_parameters u1_params;
struct usb3_lpm_parameters u2_params;
unsigned lpm_disable_count;
- unsigned hub_initiated_lpm_disable_count;
};
#define to_usb_device(d) container_of(d, struct usb_device, dev)
@@ -629,6 +634,17 @@ extern void usb_enable_lpm(struct usb_device *udev);
extern int usb_unlocked_disable_lpm(struct usb_device *udev);
extern void usb_unlocked_enable_lpm(struct usb_device *udev);
+extern int usb_disable_ltm(struct usb_device *udev);
+extern void usb_enable_ltm(struct usb_device *udev);
+
+static inline bool usb_device_supports_ltm(struct usb_device *udev)
+{
+ if (udev->speed != USB_SPEED_SUPER || !udev->bos || !udev->bos->ss_cap)
+ return false;
+ return udev->bos->ss_cap->bmAttributes & USB_LTM_SUPPORT;
+}
+
+
/*-------------------------------------------------------------------------*/
/* for drivers using iso endpoints */
@@ -777,6 +793,22 @@ static inline int usb_make_path(struct usb_device *dev, char *buf, size_t size)
.bInterfaceProtocol = (pr)
/**
+ * USB_DEVICE_INTERFACE_NUMBER - describe a usb device with a specific interface number
+ * @vend: the 16 bit USB Vendor ID
+ * @prod: the 16 bit USB Product ID
+ * @num: bInterfaceNumber value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific interface number of devices.
+ */
+#define USB_DEVICE_INTERFACE_NUMBER(vend, prod, num) \
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
+ USB_DEVICE_ID_MATCH_INT_NUMBER, \
+ .idVendor = (vend), \
+ .idProduct = (prod), \
+ .bInterfaceNumber = (num)
+
+/**
* USB_DEVICE_INFO - macro used to describe a class of usb devices
* @cl: bDeviceClass value
* @sc: bDeviceSubClass value
@@ -829,6 +861,27 @@ static inline int usb_make_path(struct usb_device *dev, char *buf, size_t size)
.bInterfaceSubClass = (sc), \
.bInterfaceProtocol = (pr)
+/**
+ * USB_VENDOR_AND_INTERFACE_INFO - describe a specific usb vendor with a class of usb interfaces
+ * @vend: the 16 bit USB Vendor ID
+ * @cl: bInterfaceClass value
+ * @sc: bInterfaceSubClass value
+ * @pr: bInterfaceProtocol value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific vendor with a specific class of interfaces.
+ *
+ * This is especially useful when explicitly matching devices that have
+ * vendor specific bDeviceClass values, but standards-compliant interfaces.
+ */
+#define USB_VENDOR_AND_INTERFACE_INFO(vend, cl, sc, pr) \
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO \
+ | USB_DEVICE_ID_MATCH_VENDOR, \
+ .idVendor = (vend), \
+ .bInterfaceClass = (cl), \
+ .bInterfaceSubClass = (sc), \
+ .bInterfaceProtocol = (pr)
+
/* ----------------------------------------------------------------------- */
/* Stuff for dynamic usb ids */