kernel/include/linux/dma/k3-event-router.h, branch linux-6.1.yHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-6.1.y2020-12-11T15:50:09Zdmaengine: ti: Add support for k3 event routers2020-12-11T15:50:09ZPeter Ujfalusipeter.ujfalusi@ti.com2020-12-08T09:04:35Zurn:sha1:fc373e47d72605cc3f5012ddda49d2dca430d51f
In k3 architecture a DMA channel (in TR momde) can be triggered by global
events, origination from different modules.
The events for triggers can be sent from any module which is connected to
PSI-L fabric, but the event number to be sent is DMA channel specific, it
is only known after the channel itself is requested.
The router operation needs to be split up:
- route_allocate: configure the dma_spec for the DMA and store the
configuration which is needed for the router's input
- set_event: callback used by the DMA driver to set the event number for
the channel and enable the routing
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20201208090440.31792-16-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>