diff options
| author | Alexander Usyskin <alexander.usyskin@intel.com> | 2021-11-12 08:28:09 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2021-11-26 18:31:46 +0200 |
| commit | 2cca3465147d650be3de04927a99784b30251ade (patch) | |
| tree | 6c2345c0c6179550e5f88e610a5ce6d86aed9c74 /include/linux/mei_cl_bus.h | |
| parent | 84d94e16efa268e4f2887d858cd67ee37b870f25 (diff) | |
mei: bus: add client dma interface
Expose the client dma mapping via mei client bus interface.
The client dma has to be mapped before the device is enabled,
therefore we need to create device linking already during mapping
and we need to unmap after the client is disable hence we need to
postpone the unlink and flush till unmapping or when
destroying the device.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Co-developed-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20210420172755.12178-1-emmanuel.grumbach@intel.com
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211112062814.7502-1-emmanuel.grumbach@intel.com
Diffstat (limited to 'include/linux/mei_cl_bus.h')
| -rw-r--r-- | include/linux/mei_cl_bus.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mei_cl_bus.h b/include/linux/mei_cl_bus.h index c6786c12b207..df1fab44ea5c 100644 --- a/include/linux/mei_cl_bus.h +++ b/include/linux/mei_cl_bus.h @@ -117,4 +117,7 @@ int mei_cldev_enable(struct mei_cl_device *cldev); int mei_cldev_disable(struct mei_cl_device *cldev); bool mei_cldev_enabled(const struct mei_cl_device *cldev); +void *mei_cldev_dma_map(struct mei_cl_device *cldev, u8 buffer_id, size_t size); +int mei_cldev_dma_unmap(struct mei_cl_device *cldev); + #endif /* _LINUX_MEI_CL_BUS_H */ |