diff options
| author | Rai, Amardeep <amardeep.rai@intel.com> | 2025-08-20 17:38:19 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-09-06 15:25:05 +0200 |
| commit | 20f988320d2718ef28b1f0635acc88c12a216d29 (patch) | |
| tree | 9ca695cfe32987f5d63335cef70fd54f3fbb7f62 /include | |
| parent | usb: core: eUSB2 companion descriptor is for isoc IN endpoints only (diff) | |
| download | linux-20f988320d2718ef28b1f0635acc88c12a216d29.tar.gz linux-20f988320d2718ef28b1f0635acc88c12a216d29.zip | |
usb: core: Add a function to get USB version independent periodic payload
Add usb_endpoint_max_periodic_payload() to obtain maximum payload bytes in
a service interval for isochronous and interrupt endpoints in a USB
version independent way.
Signed-off-by: Rai, Amardeep <amardeep.rai@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Co-developed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Hans de Goede <hansg@kernel.org>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250820143824.551777-5-sakari.ailus@linux.intel.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/usb.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h index 9d662c6abb4d..e9cf2786d8bd 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -2039,6 +2039,9 @@ static inline u16 usb_maxpacket(struct usb_device *udev, int pipe) return usb_endpoint_maxp(&ep->desc); } +u32 usb_endpoint_max_periodic_payload(struct usb_device *udev, + const struct usb_host_endpoint *ep); + /* translate USB error codes to codes user space understands */ static inline int usb_translate_errors(int error_code) { |