| Message ID | 20220608105748.139922-1-m.grzeschik@pengutronix.de (mailing list archive) |
|---|---|
| Headers | show |
| Series | usb: gadget: uvc: use configfs entries for negotiation and v4l2 VIDIOCS | expand |
Gentle Ping! On Wed, Jun 08, 2022 at 12:57:44PM +0200, Michael Grzeschik wrote: >This series improves the uvc video gadget by parsing the configfs >entries. With the configfs data, the driver now is able to negotiate the >format with the usb host in the kernel and also exports the supported >frames/formats/intervals via the v4l2 VIDIOC interface. > >The uvc userspace stack is also under development. One example is an generic >v4l2uvcsink gstreamer elemnt, which is currently under discussion. [1] > >[1] https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304 > >With the libusbgx library [1] used by the gadget-tool [2] it is now also >possible to fully describe the configfs layout of the uvc gadget with scheme >files. > >[2] https://github.com/linux-usb-gadgets/libusbgx/pull/61/commits/53231c76f9d512f59fdc23b65cd5c46b7fb09eb4 > >[3] https://github.com/linux-usb-gadgets/gt/tree/master/examples/systemd > >The bigger picture of these patches is to provide a more versatile interface to >the uvc gadget. The goal is to simply start a uvc-gadget with the following >commands: > >$ gt load uvc.scheme >$ gst-launch v4l2src ! v4l2uvcsink > >-- > >v1: https://lore.kernel.org/linux-usb/20210530222239.8793-1-m.grzeschik@pengutronix.de/ >v2: https://lore.kernel.org/linux-usb/20211117004432.3763306-1-m.grzeschik@pengutronix.de/ >v3: https://lore.kernel.org/linux-usb/20211117122435.2409362-1-m.grzeschik@pengutronix.de/ >v4: https://lore.kernel.org/linux-usb/20211205225803.268492-1-m.grzeschik@pengutronix.de/ >v5: https://lore.kernel.org/linux-usb/20211209084322.2662616-1-m.grzeschik@pengutronix.de/ >v6: https://lore.kernel.org/linux-usb/20220105115527.3592860-1-m.grzeschik@pengutronix.de/ > >Regards, >Michael > >Michael Grzeschik (4): > media: v4l: move helper functions for fractions from uvc to > v4l2-common > media: uvcvideo: move uvc_format_desc to common header > usb: gadget: uvc: add VIDIOC function > usb: gadget: uvc: add format/frame handling code > > drivers/media/usb/uvc/uvc_ctrl.c | 1 + > drivers/media/usb/uvc/uvc_driver.c | 286 +--------------- > drivers/media/usb/uvc/uvc_v4l2.c | 14 +- > drivers/media/usb/uvc/uvcvideo.h | 147 --------- > drivers/media/v4l2-core/v4l2-common.c | 82 +++++ > drivers/usb/gadget/function/f_uvc.c | 270 +++++++++++++++- > drivers/usb/gadget/function/uvc.h | 39 ++- > drivers/usb/gadget/function/uvc_queue.c | 3 +- > drivers/usb/gadget/function/uvc_v4l2.c | 412 +++++++++++++++++++++--- > drivers/usb/gadget/function/uvc_video.c | 71 +++- > include/media/v4l2-common.h | 4 + > include/media/v4l2-uvc.h | 359 +++++++++++++++++++++ > 12 files changed, 1187 insertions(+), 501 deletions(-) > create mode 100644 include/media/v4l2-uvc.h > >-- >2.30.2 > > >
On Wed, Jun 08, 2022 at 12:57:44PM +0200, Michael Grzeschik wrote: > This series improves the uvc video gadget by parsing the configfs > entries. With the configfs data, the driver now is able to negotiate the > format with the usb host in the kernel and also exports the supported > frames/formats/intervals via the v4l2 VIDIOC interface. > > The uvc userspace stack is also under development. One example is an generic > v4l2uvcsink gstreamer elemnt, which is currently under discussion. [1] > > [1] https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304 > > With the libusbgx library [1] used by the gadget-tool [2] it is now also > possible to fully describe the configfs layout of the uvc gadget with scheme > files. > > [2] https://github.com/linux-usb-gadgets/libusbgx/pull/61/commits/53231c76f9d512f59fdc23b65cd5c46b7fb09eb4 > > [3] https://github.com/linux-usb-gadgets/gt/tree/master/examples/systemd > > The bigger picture of these patches is to provide a more versatile interface to > the uvc gadget. The goal is to simply start a uvc-gadget with the following > commands: > > $ gt load uvc.scheme > $ gst-launch v4l2src ! v4l2uvcsink v4l developers, given a lack of review response to this series, I'm assuming that you all have no objection to this series and I can take it through my usb-next tree. thanks, greg k-h
On Wed, Sep 07, 2022 at 03:28:54PM +0200, Greg KH wrote: >On Wed, Jun 08, 2022 at 12:57:44PM +0200, Michael Grzeschik wrote: >> This series improves the uvc video gadget by parsing the configfs >> entries. With the configfs data, the driver now is able to negotiate the >> format with the usb host in the kernel and also exports the supported >> frames/formats/intervals via the v4l2 VIDIOC interface. >> >> The uvc userspace stack is also under development. One example is an generic >> v4l2uvcsink gstreamer elemnt, which is currently under discussion. [1] >> >> [1] https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304 >> >> With the libusbgx library [1] used by the gadget-tool [2] it is now also >> possible to fully describe the configfs layout of the uvc gadget with scheme >> files. >> >> [2] https://github.com/linux-usb-gadgets/libusbgx/pull/61/commits/53231c76f9d512f59fdc23b65cd5c46b7fb09eb4 >> >> [3] https://github.com/linux-usb-gadgets/gt/tree/master/examples/systemd >> >> The bigger picture of these patches is to provide a more versatile interface to >> the uvc gadget. The goal is to simply start a uvc-gadget with the following >> commands: >> >> $ gt load uvc.scheme >> $ gst-launch v4l2src ! v4l2uvcsink > >v4l developers, given a lack of review response to this series, I'm >assuming that you all have no objection to this series and I can take it >through my usb-next tree. Since this will not apply anymore, I just send v8 with some minor changes. Regards, Michael
On Wed, Sep 07, 2022 at 04:03:41PM +0200, Michael Grzeschik wrote: > On Wed, Sep 07, 2022 at 03:28:54PM +0200, Greg KH wrote: > > On Wed, Jun 08, 2022 at 12:57:44PM +0200, Michael Grzeschik wrote: > > > This series improves the uvc video gadget by parsing the configfs > > > entries. With the configfs data, the driver now is able to negotiate the > > > format with the usb host in the kernel and also exports the supported > > > frames/formats/intervals via the v4l2 VIDIOC interface. > > > > > > The uvc userspace stack is also under development. One example is an generic > > > v4l2uvcsink gstreamer elemnt, which is currently under discussion. [1] > > > > > > [1] https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304 > > > > > > With the libusbgx library [1] used by the gadget-tool [2] it is now also > > > possible to fully describe the configfs layout of the uvc gadget with scheme > > > files. > > > > > > [2] https://github.com/linux-usb-gadgets/libusbgx/pull/61/commits/53231c76f9d512f59fdc23b65cd5c46b7fb09eb4 > > > > > > [3] https://github.com/linux-usb-gadgets/gt/tree/master/examples/systemd > > > > > > The bigger picture of these patches is to provide a more versatile interface to > > > the uvc gadget. The goal is to simply start a uvc-gadget with the following > > > commands: > > > > > > $ gt load uvc.scheme > > > $ gst-launch v4l2src ! v4l2uvcsink > > > > v4l developers, given a lack of review response to this series, I'm > > assuming that you all have no objection to this series and I can take it > > through my usb-next tree. > > Since this will not apply anymore, I just send v8 with some minor > changes. Thanks, I'll take that series now. greg k-h
On Wed, Sep 07, 2022 at 04:09:52PM +0200, Greg KH wrote: >On Wed, Sep 07, 2022 at 04:03:41PM +0200, Michael Grzeschik wrote: >> On Wed, Sep 07, 2022 at 03:28:54PM +0200, Greg KH wrote: >> > On Wed, Jun 08, 2022 at 12:57:44PM +0200, Michael Grzeschik wrote: >> > > This series improves the uvc video gadget by parsing the configfs >> > > entries. With the configfs data, the driver now is able to negotiate the >> > > format with the usb host in the kernel and also exports the supported >> > > frames/formats/intervals via the v4l2 VIDIOC interface. >> > > >> > > The uvc userspace stack is also under development. One example is an generic >> > > v4l2uvcsink gstreamer elemnt, which is currently under discussion. [1] >> > > >> > > [1] https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304 >> > > >> > > With the libusbgx library [1] used by the gadget-tool [2] it is now also >> > > possible to fully describe the configfs layout of the uvc gadget with scheme >> > > files. >> > > >> > > [2] https://github.com/linux-usb-gadgets/libusbgx/pull/61/commits/53231c76f9d512f59fdc23b65cd5c46b7fb09eb4 >> > > >> > > [3] https://github.com/linux-usb-gadgets/gt/tree/master/examples/systemd >> > > >> > > The bigger picture of these patches is to provide a more versatile interface to >> > > the uvc gadget. The goal is to simply start a uvc-gadget with the following >> > > commands: >> > > >> > > $ gt load uvc.scheme >> > > $ gst-launch v4l2src ! v4l2uvcsink >> > >> > v4l developers, given a lack of review response to this series, I'm >> > assuming that you all have no objection to this series and I can take it >> > through my usb-next tree. >> >> Since this will not apply anymore, I just send v8 with some minor >> changes. > >Thanks, I'll take that series now. Skip this v8 please. I will have to fix first.
This series improves the uvc video gadget by parsing the configfs entries. With the configfs data, the driver now is able to negotiate the format with the usb host in the kernel and also exports the supported frames/formats/intervals via the v4l2 VIDIOC interface. The uvc userspace stack is also under development. One example is an generic v4l2uvcsink gstreamer elemnt, which is currently under discussion. [1] [1] https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304 With the libusbgx library [1] used by the gadget-tool [2] it is now also possible to fully describe the configfs layout of the uvc gadget with scheme files. [2] https://github.com/linux-usb-gadgets/libusbgx/pull/61/commits/53231c76f9d512f59fdc23b65cd5c46b7fb09eb4 [3] https://github.com/linux-usb-gadgets/gt/tree/master/examples/systemd The bigger picture of these patches is to provide a more versatile interface to the uvc gadget. The goal is to simply start a uvc-gadget with the following commands: $ gt load uvc.scheme $ gst-launch v4l2src ! v4l2uvcsink -- v1: https://lore.kernel.org/linux-usb/20210530222239.8793-1-m.grzeschik@pengutronix.de/ v2: https://lore.kernel.org/linux-usb/20211117004432.3763306-1-m.grzeschik@pengutronix.de/ v3: https://lore.kernel.org/linux-usb/20211117122435.2409362-1-m.grzeschik@pengutronix.de/ v4: https://lore.kernel.org/linux-usb/20211205225803.268492-1-m.grzeschik@pengutronix.de/ v5: https://lore.kernel.org/linux-usb/20211209084322.2662616-1-m.grzeschik@pengutronix.de/ v6: https://lore.kernel.org/linux-usb/20220105115527.3592860-1-m.grzeschik@pengutronix.de/ Regards, Michael Michael Grzeschik (4): media: v4l: move helper functions for fractions from uvc to v4l2-common media: uvcvideo: move uvc_format_desc to common header usb: gadget: uvc: add VIDIOC function usb: gadget: uvc: add format/frame handling code drivers/media/usb/uvc/uvc_ctrl.c | 1 + drivers/media/usb/uvc/uvc_driver.c | 286 +--------------- drivers/media/usb/uvc/uvc_v4l2.c | 14 +- drivers/media/usb/uvc/uvcvideo.h | 147 --------- drivers/media/v4l2-core/v4l2-common.c | 82 +++++ drivers/usb/gadget/function/f_uvc.c | 270 +++++++++++++++- drivers/usb/gadget/function/uvc.h | 39 ++- drivers/usb/gadget/function/uvc_queue.c | 3 +- drivers/usb/gadget/function/uvc_v4l2.c | 412 +++++++++++++++++++++--- drivers/usb/gadget/function/uvc_video.c | 71 +++- include/media/v4l2-common.h | 4 + include/media/v4l2-uvc.h | 359 +++++++++++++++++++++ 12 files changed, 1187 insertions(+), 501 deletions(-) create mode 100644 include/media/v4l2-uvc.h