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8c6bb62f6b
In K3 architecture the DMA operates within threads. One end of the thread is UDMAP, the other is on the peripheral side. The UDMAP channel configuration depends on the needs of the remote endpoint and it can be differ from peripheral to peripheral. This patch adds database for am654 and j721e and small API to fetch the PSI-L endpoint configuration from the database which should only used by the DMA driver(s). Another API is added for native peripherals to give possibility to pass new configuration for the threads they are using, which is needed to be able to handle changes caused by different firmware loaded for the peripheral for example. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Tested-by: Keerthy <j-keerthy@ti.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Link: https://lore.kernel.org/r/20191223110458.30766-9-peter.ujfalusi@ti.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
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*/
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#ifndef K3_PSIL_PRIV_H_
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#define K3_PSIL_PRIV_H_
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#include <linux/dma/k3-psil.h>
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struct psil_ep {
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u32 thread_id;
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struct psil_endpoint_config ep_config;
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};
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/**
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* struct psil_ep_map - PSI-L thread ID configuration maps
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* @name: Name of the map, set it to the name of the SoC
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* @src: Array of source PSI-L thread configurations
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* @src_count: Number of entries in the src array
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* @dst: Array of destination PSI-L thread configurations
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* @dst_count: Number of entries in the dst array
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*
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* In case of symmetric configuration for a matching src/dst thread (for example
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* 0x4400 and 0xc400) only the src configuration can be present. If no dst
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* configuration found the code will look for (dst_thread_id & ~0x8000) to find
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* the symmetric match.
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*/
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struct psil_ep_map {
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char *name;
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struct psil_ep *src;
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int src_count;
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struct psil_ep *dst;
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int dst_count;
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};
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struct psil_endpoint_config *psil_get_ep_config(u32 thread_id);
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#endif /* K3_PSIL_PRIV_H_ */
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