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| author | Pi-Hsun Shih <pihsun@chromium.org> | 2020-08-14 10:11:40 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-08-28 16:20:40 +0300 |
| commit | 911ea8ec42dea0e28083a6e92b1b4a5a0ad5acca (patch) | |
| tree | d69e2ff7234e3dc42c28edac856dbe9ef89880fe /include/media/v4l2-mem2mem.h | |
| parent | 1847f68e39d6d562f339b500f0beb3217282490a (diff) | |
| download | linux-911ea8ec42dea0e28083a6e92b1b4a5a0ad5acca.tar.xz | |
media: v4l2-mem2mem: add v4l2_m2m_suspend, v4l2_m2m_resume
Add two functions that can be used to stop new jobs from being queued /
continue running queued job. This can be used while a driver using m2m
helper is going to suspend / wake up from resume, and can ensure that
there's no job running in suspend process.
Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org>
Signed-off-by: Jerry-ch Chen <jerry-ch.chen@mediatek.corp-partner.google.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'include/media/v4l2-mem2mem.h')
| -rw-r--r-- | include/media/v4l2-mem2mem.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h index 98753f00df7e..5a91b548ecc0 100644 --- a/include/media/v4l2-mem2mem.h +++ b/include/media/v4l2-mem2mem.h @@ -305,6 +305,28 @@ void v4l2_m2m_last_buffer_done(struct v4l2_m2m_ctx *m2m_ctx, struct vb2_v4l2_buffer *vbuf); /** + * v4l2_m2m_suspend() - stop new jobs from being run and wait for current job + * to finish + * + * @m2m_dev: opaque pointer to the internal data to handle M2M context + * + * Called by a driver in the suspend hook. Stop new jobs from being run, and + * wait for current running job to finish. + */ +void v4l2_m2m_suspend(struct v4l2_m2m_dev *m2m_dev); + +/** + * v4l2_m2m_resume() - resume job running and try to run a queued job + * + * @m2m_dev: opaque pointer to the internal data to handle M2M context + * + * Called by a driver in the resume hook. This reverts the operation of + * v4l2_m2m_suspend() and allows job to be run. Also try to run a queued job if + * there is any. + */ +void v4l2_m2m_resume(struct v4l2_m2m_dev *m2m_dev); + +/** * v4l2_m2m_reqbufs() - multi-queue-aware REQBUFS multiplexer * * @file: pointer to struct &file |