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3 Commits

Author SHA1 Message Date
Sanjay R Mehta
e2fb2e2a33 dmaengine: ptdma: Add debugfs entries for PTDMA 
Expose data about the configuration and operation of the
PTDMA through debugfs entries: device name, capabilities,
configuration, statistics.

Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Link: https://lore.kernel.org/r/1629208559-51964-4-git-send-email-Sanju.Mehta@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 2021-08-29 19:14:20 +05:30
Sanjay R Mehta
b0b4a6b105 dmaengine: ptdma: register PTDMA controller as a DMA resource 
Register ptdma queue to Linux dmaengine framework as general-purpose
DMA channels.

Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Link: https://lore.kernel.org/r/1629208559-51964-3-git-send-email-Sanju.Mehta@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 2021-08-29 19:14:20 +05:30
Sanjay R Mehta
fa5d823b16 dmaengine: ptdma: Initial driver for the AMD PTDMA 
Add support for AMD PTDMA controller. It performs high-bandwidth
memory to memory and IO copy operation. Device commands are managed
via a circular queue of 'descriptors', each of which specifies source
and destination addresses for copying a single buffer of data.

Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Link: https://lore.kernel.org/r/1629208559-51964-2-git-send-email-Sanju.Mehta@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 2021-08-29 19:14:20 +05:30