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 u8 m_master;
55 u8 p_master;
56};
57
58static __maybe_unused const struct dw_dma_chip_pdata dw_dma_chip_pdata = {
59 .probe = dw_dma_probe,
60 .remove = dw_dma_remove,
61 .m_master = 0,
62 .p_master = 1,
63};
64
65static const struct dw_dma_platform_data idma32_pdata = {
66 .nr_channels = 8,
67 .chan_allocation_order = CHAN_ALLOCATION_ASCENDING,
68 .chan_priority = CHAN_PRIORITY_ASCENDING,
69 .block_size = 131071,
70 .nr_masters = 1,
71 .data_width = {4},
72 .multi_block = {1, 1, 1, 1, 1, 1, 1, 1},
73};
74
75static __maybe_unused const struct dw_dma_chip_pdata idma32_chip_pdata = {
76 .pdata = &idma32_pdata,
77 .probe = idma32_dma_probe,
78 .remove = idma32_dma_remove,
79 .m_master = 0,
80 .p_master = 0,
81};
82
83static const struct dw_dma_platform_data xbar_pdata = {
84 .nr_channels = 8,
85 .chan_allocation_order = CHAN_ALLOCATION_ASCENDING,
86 .chan_priority = CHAN_PRIORITY_ASCENDING,
87 .block_size = 131071,
88 .nr_masters = 1,
89 .data_width = {4},
90 .quirks = DW_DMA_QUIRK_XBAR_PRESENT,
91};
92
93static __maybe_unused const struct dw_dma_chip_pdata xbar_chip_pdata = {
94 .pdata = &xbar_pdata,
95 .probe = idma32_dma_probe,
96 .remove = idma32_dma_remove,
97 .m_master = 0,
98 .p_master = 0,
99};
100
101#endif /* _DMA_DW_INTERNAL_H */
102