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Subject: [PATCH v1 0/3] [RESEND] media: uvcvideo: Implement granular power management
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From:   Ricardo Ribalda <ribalda@chromium.org>
Date:   Tue, 20 Sep 2022 16:09:49 +0200
Message-Id: <20220920-resend-powersave-v1-0-123aa2ba3836@chromium.org>
To:     Mauro Carvalho Chehab <mchehab@kernel.org>
Cc:     linux-kernel@vger.kernel.org, Tomasz Figa <tfiga@chromium.org>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Ricardo Ribalda <ribalda@chromium.org>,
        linux-media@vger.kernel.org
Precedence: bulk

Instead of suspending/resume the USB device at open()/close(), do it
when the device is actually used.

This way we can reduce the power consumption when a service is holding
the video device and leaving it in an idle state.

To: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-media@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>

---
Ricardo Ribalda (3):
      media: uvcvideo: Only create input devs if hw supports it
      media: uvcvideo: Refactor streamon/streamoff
      media: uvcvideo: Do power management granularly

 drivers/media/usb/uvc/uvc_status.c |  23 +++++
 drivers/media/usb/uvc/uvc_v4l2.c   | 193 ++++++++++++++++++++++++++++++-------
 drivers/media/usb/uvc/uvcvideo.h   |   1 +
 3 files changed, 182 insertions(+), 35 deletions(-)
---
base-commit: 521a547ced6477c54b4b0cc206000406c221b4d6
change-id: 20220920-resend-powersave-5981719ed267

Best regards,
-- 
Ricardo Ribalda <ribalda@chromium.org>