diff options
Diffstat (limited to 'Documentation/driver-api')
| -rw-r--r-- | Documentation/driver-api/dmaengine/provider.rst | 28 |
1 files changed, 12 insertions, 16 deletions
diff --git a/Documentation/driver-api/dmaengine/provider.rst b/Documentation/driver-api/dmaengine/provider.rst index 814acb4d2294..a257d9d6bd72 100644 --- a/Documentation/driver-api/dmaengine/provider.rst +++ b/Documentation/driver-api/dmaengine/provider.rst @@ -125,26 +125,22 @@ need to initialize a few fields in there: (i.e. excluding mem2mem transfers) - residue_granularity: + granularity of the transfer residue reported to dma_set_residue. + This can be either: - - Granularity of the transfer residue reported to dma_set_residue. - This can be either: + - Descriptor: + your device doesn't support any kind of residue + reporting. The framework will only know that a particular + transaction descriptor is done. - - Descriptor + - Segment: + your device is able to report which chunks have been transferred - - Your device doesn't support any kind of residue - reporting. The framework will only know that a particular - transaction descriptor is done. + - Burst: + your device is able to report which burst have been transferred - - Segment - - - Your device is able to report which chunks have been transferred - - - Burst - - - Your device is able to report which burst have been transferred - - - dev: should hold the pointer to the ``struct device`` associated - to your current driver instance. +- dev: should hold the pointer to the ``struct device`` associated + to your current driver instance. Supported transaction types --------------------------- |