diff options
Diffstat (limited to 'include/linux/usb.h')
| -rw-r--r-- | include/linux/usb.h | 59 |
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 */ |