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| author | Niklas Söderlund <niklas.soderlund@ragnatech.se> | 2020-06-29 18:29:56 +0200 |
|---|---|---|
| committer | Niklas Söderlund <niklas.soderlund@ragnatech.se> | 2020-07-03 00:08:31 +0200 |
| commit | 8e137b08194ea73c63832750af5ad2930688aa8a (patch) | |
| tree | 4e39da5696a0a68999ce7aaf1b0525f9e1f20eb0 /src/libcamera/pipeline/raspberrypi | |
| parent | 8dbd0049e0f96d9af1c37d88cba523b2fef55bbc (diff) | |
libcamera: raspberrypi: Document vc_sm_cma pointer sharing with IPA
Sharing a pointer with the IPA is fragile as it will not work with all
IPC mechanisms. Document that it's a temporary workaround that should be
reworked.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'src/libcamera/pipeline/raspberrypi')
| -rw-r--r-- | src/libcamera/pipeline/raspberrypi/raspberrypi.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp index 9d887b70..f4966f86 100644 --- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp +++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp @@ -1014,6 +1014,11 @@ int PipelineHandlerRPi::configureIPA(Camera *camera) /* * The vcsm allocation will always be in the memory region * < 32-bits to allow Videocore to access the memory. + * + * \todo Sending a pointer to the IPA is a workaround for + * vc_sm_cma not yet supporting dmabuf. This will not work with + * IPA module isolation and should be reworked when vc_sma_cma + * will permit. */ IPAOperationData op; op.operation = RPI_IPA_EVENT_LS_TABLE_ALLOCATION; |