1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Driver for the Synopsys DesignWare DMA Controller
 4 *
 5 * Copyright (C) 2013 Intel Corporation
 6 */
 7
 8#ifndef _DMA_DW_INTERNAL_H
 9#define _DMA_DW_INTERNAL_H
10
11#include <linux/dma/dw.h>
12
13#include "regs.h"
14
15int do_dma_probe(struct dw_dma_chip *chip);
16int do_dma_remove(struct dw_dma_chip *chip);
17
18void do_dw_dma_on(struct dw_dma *dw);
19void do_dw_dma_off(struct dw_dma *dw);
20
21int do_dw_dma_disable(struct dw_dma_chip *chip);
22int do_dw_dma_enable(struct dw_dma_chip *chip);
23
24extern bool dw_dma_filter(struct dma_chan *chan, void *param);
25
26#ifdef CONFIG_ACPI
27void dw_dma_acpi_controller_register(struct dw_dma *dw);
28void dw_dma_acpi_controller_free(struct dw_dma *dw);
29#else /* !CONFIG_ACPI */
30static inline void dw_dma_acpi_controller_register(struct dw_dma *dw) {}
31static inline void dw_dma_acpi_controller_free(struct dw_dma *dw) {}
32#endif /* !CONFIG_ACPI */
33
34struct platform_device;
35
36#ifdef CONFIG_OF
37struct dw_dma_platform_data *dw_dma_parse_dt(struct platform_device *pdev);
38void dw_dma_of_controller_register(struct dw_dma *dw);
39void dw_dma_of_controller_free(struct dw_dma *dw);
40#else
41static inline struct dw_dma_platform_data *dw_dma_parse_dt(struct platform_device *pdev)
42{
43	return NULL;
44}
45static inline void dw_dma_of_controller_register(struct dw_dma *dw) {}
46static inline void dw_dma_of_controller_free(struct dw_dma *dw) {}
47#endif
48
49struct dw_dma_chip_pdata {
50	const struct dw_dma_platform_data *pdata;
51	int (*probe)(struct dw_dma_chip *chip);
52	int (*remove)(struct dw_dma_chip *chip);
53	struct dw_dma_chip *chip;
54};
55
56static __maybe_unused const struct dw_dma_chip_pdata dw_dma_chip_pdata = {
57	.probe = dw_dma_probe,
58	.remove = dw_dma_remove,
59};
60
61static const struct dw_dma_platform_data idma32_pdata = {
62	.nr_channels = 8,
63	.chan_allocation_order = CHAN_ALLOCATION_ASCENDING,
64	.chan_priority = CHAN_PRIORITY_ASCENDING,
65	.block_size = 131071,
66	.nr_masters = 1,
67	.data_width = {4},
68	.multi_block = {1, 1, 1, 1, 1, 1, 1, 1},
69};
70
71static __maybe_unused const struct dw_dma_chip_pdata idma32_chip_pdata = {
72	.pdata = &idma32_pdata,
73	.probe = idma32_dma_probe,
74	.remove = idma32_dma_remove,
75};
76
77#endif /* _DMA_DW_INTERNAL_H */