Hi Ricardo, On 3-Mar-25 20:13, Ricardo Ribalda wrote: > Right now we power-up the device when a user open() the device and we > power it off when the last user close() the first video node. > > This behaviour affects the power consumption of the device is multiple > use cases, such as: > - Polling the privacy gpio > - udev probing the device > > This patchset introduces a more granular power saving behaviour where > the camera is only awaken when needed. It is compatible with > asynchronous controls. > > While developing this patchset, two bugs were found. The patchset has > been developed so these fixes can be taken independently. > > Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx> > --- > Changes in v5: > - Improve "media: uvcvideo: Make power management granular" commit > message. > - Link to v4: https://lore.kernel.org/r/20250226-uvc-granpower-ng-v4-0-3ec9be906048@xxxxxxxxxxxx Thank you for the new version. I've merge the entire series into: https://gitlab.freedesktop.org/linux-media/users/uvc/ -next now. Regards, Hans > Changes in v4: > - CodeStyle > - Create uvc_pm_ functions > - Link to v3: https://lore.kernel.org/r/20250206-uvc-granpower-ng-v3-0-32d0d7b0c5d8@xxxxxxxxxxxx > > Changes in v3: > - Fix build error on sh4. > - Link to v2: https://lore.kernel.org/r/20250203-uvc-granpower-ng-v2-0-bef4b55e7b67@xxxxxxxxxxxx > > Changes in v2: > - Add missing semicolon. > - Rebase on top of media-committers/next > - Link to v1: https://lore.kernel.org/r/20241126-uvc-granpower-ng-v1-0-6312bf26549c@xxxxxxxxxxxx > > --- > Ricardo Ribalda (5): > media: uvcvideo: Keep streaming state in the file handle > media: uvcvideo: Create uvc_pm_(get|put) functions > media: uvcvideo: Increase/decrease the PM counter per IOCTL > media: uvcvideo: Make power management granular > media: uvcvideo: Do not turn on the camera for some ioctls > > drivers/media/usb/uvc/uvc_ctrl.c | 13 +++++- > drivers/media/usb/uvc/uvc_v4l2.c | 99 ++++++++++++++++++++++++++++++---------- > drivers/media/usb/uvc/uvcvideo.h | 6 +++ > 3 files changed, 92 insertions(+), 26 deletions(-) > --- > base-commit: d98e9213a768a3cc3a99f5e1abe09ad3baff2104 > change-id: 20241126-uvc-granpower-ng-069185a6d474 > > Best regards,
