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e74c39573d
Add support for HDMA NATIVE, as long the IP design has set the compatible register map parameter-HDMA_NATIVE, which allows compatibility for native HDMA register configuration. The HDMA Hyper-DMA IP is an enhancement of the eDMA embedded-DMA IP. And the native HDMA registers are different from eDMA, so this patch add support for HDMA NATIVE mode. HDMA write and read channels operate independently to maximize the performance of the HDMA read and write data transfer over the link When you configure the HDMA with multiple read channels, then it uses a round robin (RR) arbitration scheme to select the next read channel to be serviced.The same applies when you have multiple write channels. The native HDMA driver also supports a maximum of 16 independent channels (8 write + 8 read), which can run simultaneously. Both SAR (Source Address Register) and DAR (Destination Address Register) are aligned to byte. Signed-off-by: Cai Huoqing <cai.huoqing@linux.dev> Reviewed-by: Serge Semin <fancer.lancer@gmail.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Tested-by: Serge Semin <fancer.lancer@gmail.com> Link: https://lore.kernel.org/r/20230520050854.73160-4-cai.huoqing@linux.dev Signed-off-by: Vinod Koul <vkoul@kernel.org>
18 lines
360 B
C
18 lines
360 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2023 Cai Huoqing
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* Synopsys DesignWare HDMA v0 core
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*
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* Author: Cai Huoqing <cai.huoqing@linux.dev>
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*/
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#ifndef _DW_HDMA_V0_CORE_H
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#define _DW_HDMA_V0_CORE_H
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#include <linux/dma/edma.h>
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/* HDMA core register */
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void dw_hdma_v0_core_register(struct dw_edma *dw);
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#endif /* _DW_HDMA_V0_CORE_H */
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