mbox series

[v2,0/5] usb: gadget: uvc: improve uvc gadget performance

Message ID 20210628081600.14525-1-m.grzeschik@pengutronix.de (mailing list archive)
Headers show
Series usb: gadget: uvc: improve uvc gadget performance | expand

Message

Michael Grzeschik June 28, 2021, 8:15 a.m. UTC 
This series improves the performance of the uvc video gadget by adding a
zero copy routine using the scatter list interface of the gadget. The
series also increases the amount of allocated requests depending of the
speed and it also reduces the interrupt load by only trigger on every
16th request in case of super-speed.

Michael Grzeschik (5):
  usb: dwc3: gadget: set gadgets parent to the right controller
  usb: gadget: uvc: make uvc_num_requests depend on gadget speed
  usb: gadget: uvc: set v4l2_dev->dev in f_uvc
  usb: gadget: uvc: add scatter gather support
  usb: gadget: uvc: decrease the interrupt load to a quarter

 drivers/usb/dwc3/gadget.c               |   2 +-
 drivers/usb/gadget/Kconfig              |   1 +
 drivers/usb/gadget/function/f_uvc.c     |   1 +
 drivers/usb/gadget/function/uvc.h       |  15 ++-
 drivers/usb/gadget/function/uvc_queue.c |  28 ++++-
 drivers/usb/gadget/function/uvc_queue.h |   7 +-
 drivers/usb/gadget/function/uvc_video.c | 155 +++++++++++++++++++-----
 drivers/usb/gadget/legacy/Kconfig       |   1 +
 8 files changed, 175 insertions(+), 35 deletions(-)

Comments

Michael Grzeschik June 28, 2021, 8:25 a.m. UTC | #1 
Forget about this series. I just missed to point the queue->dev to
the right device in here. Will send v3 later today.

On Mon, Jun 28, 2021 at 10:15:55AM +0200, Michael Grzeschik wrote:
>This series improves the performance of the uvc video gadget by adding a
>zero copy routine using the scatter list interface of the gadget. The
>series also increases the amount of allocated requests depending of the
>speed and it also reduces the interrupt load by only trigger on every
>16th request in case of super-speed.
>
>Michael Grzeschik (5):
>  usb: dwc3: gadget: set gadgets parent to the right controller
>  usb: gadget: uvc: make uvc_num_requests depend on gadget speed
>  usb: gadget: uvc: set v4l2_dev->dev in f_uvc
>  usb: gadget: uvc: add scatter gather support
>  usb: gadget: uvc: decrease the interrupt load to a quarter
>
> drivers/usb/dwc3/gadget.c               |   2 +-
> drivers/usb/gadget/Kconfig              |   1 +
> drivers/usb/gadget/function/f_uvc.c     |   1 +
> drivers/usb/gadget/function/uvc.h       |  15 ++-
> drivers/usb/gadget/function/uvc_queue.c |  28 ++++-
> drivers/usb/gadget/function/uvc_queue.h |   7 +-
> drivers/usb/gadget/function/uvc_video.c | 155 +++++++++++++++++++-----
> drivers/usb/gadget/legacy/Kconfig       |   1 +
> 8 files changed, 175 insertions(+), 35 deletions(-)
>
>-- 
>2.30.2
>
>
>