diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2020-12-08 11:04:35 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-12-11 21:20:09 +0530 |
| commit | fc373e47d72605cc3f5012ddda49d2dca430d51f (patch) | |
| tree | b8c5134bd919b321e09c1d4ff8e6ce8ebbe54a1c /include/linux/dma | |
| parent | 2329725d1a228fb0d6424ee8d499f266020cc113 (diff) | |
dmaengine: ti: Add support for k3 event routers
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>
Diffstat (limited to 'include/linux/dma')
| -rw-r--r-- | include/linux/dma/k3-event-router.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/dma/k3-event-router.h b/include/linux/dma/k3-event-router.h new file mode 100644 index 000000000000..e3f88b2f87be --- /dev/null +++ b/include/linux/dma/k3-event-router.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com + */ + +#ifndef K3_EVENT_ROUTER_ +#define K3_EVENT_ROUTER_ + +#include <linux/types.h> + +struct k3_event_route_data { + void *priv; + int (*set_event)(void *priv, u32 event); +}; + +#endif /* K3_EVENT_ROUTER_ */ |