48 строки
1.0 KiB
C
48 строки
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2018-2019 Synopsys, Inc. and/or its affiliates.
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* Synopsys DesignWare eDMA core driver
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*
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* Author: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
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*/
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#ifndef _DW_EDMA_H
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#define _DW_EDMA_H
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#include <linux/device.h>
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#include <linux/dmaengine.h>
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struct dw_edma;
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/**
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* struct dw_edma_chip - representation of DesignWare eDMA controller hardware
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* @dev: struct device of the eDMA controller
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* @id: instance ID
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* @irq: irq line
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* @dw: struct dw_edma that is filed by dw_edma_probe()
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*/
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struct dw_edma_chip {
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struct device *dev;
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int id;
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int irq;
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struct dw_edma *dw;
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};
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/* Export to the platform drivers */
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#if IS_ENABLED(CONFIG_DW_EDMA)
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int dw_edma_probe(struct dw_edma_chip *chip);
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int dw_edma_remove(struct dw_edma_chip *chip);
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#else
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static inline int dw_edma_probe(struct dw_edma_chip *chip)
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{
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return -ENODEV;
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}
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static inline int dw_edma_remove(struct dw_edma_chip *chip)
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{
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return 0;
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}
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#endif /* CONFIG_DW_EDMA */
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#endif /* _DW_EDMA_H */
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