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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>
16 lines
317 B
C
16 lines
317 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com
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*/
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#ifndef K3_EVENT_ROUTER_
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#define K3_EVENT_ROUTER_
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#include <linux/types.h>
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struct k3_event_route_data {
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void *priv;
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int (*set_event)(void *priv, u32 event);
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};
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#endif /* K3_EVENT_ROUTER_ */
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