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 | |
15 | int do_dma_probe(struct dw_dma_chip *chip); |
16 | int do_dma_remove(struct dw_dma_chip *chip); |
17 | |
18 | void do_dw_dma_on(struct dw_dma *dw); |
19 | void do_dw_dma_off(struct dw_dma *dw); |
20 | |
21 | int do_dw_dma_disable(struct dw_dma_chip *chip); |
22 | int do_dw_dma_enable(struct dw_dma_chip *chip); |
23 | |
24 | extern bool dw_dma_filter(struct dma_chan *chan, void *param); |
25 | |
26 | #ifdef CONFIG_ACPI |
27 | void dw_dma_acpi_controller_register(struct dw_dma *dw); |
28 | void dw_dma_acpi_controller_free(struct dw_dma *dw); |
29 | #else /* !CONFIG_ACPI */ |
30 | static inline void dw_dma_acpi_controller_register(struct dw_dma *dw) {} |
31 | static inline void dw_dma_acpi_controller_free(struct dw_dma *dw) {} |
32 | #endif /* !CONFIG_ACPI */ |
33 | |
34 | struct platform_device; |
35 | |
36 | #ifdef CONFIG_OF |
37 | struct dw_dma_platform_data *dw_dma_parse_dt(struct platform_device *pdev); |
38 | void dw_dma_of_controller_register(struct dw_dma *dw); |
39 | void dw_dma_of_controller_free(struct dw_dma *dw); |
40 | #else |
41 | static inline struct dw_dma_platform_data *dw_dma_parse_dt(struct platform_device *pdev) |
42 | { |
43 | return NULL; |
44 | } |
45 | static inline void dw_dma_of_controller_register(struct dw_dma *dw) {} |
46 | static inline void dw_dma_of_controller_free(struct dw_dma *dw) {} |
47 | #endif |
48 | |
49 | struct 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 | |
56 | static __maybe_unused const struct dw_dma_chip_pdata dw_dma_chip_pdata = { |
57 | .probe = dw_dma_probe, |
58 | .remove = dw_dma_remove, |
59 | }; |
60 | |
61 | static 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 | |
71 | static __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 | static const struct dw_dma_platform_data xbar_pdata = { |
78 | .nr_channels = 8, |
79 | .chan_allocation_order = CHAN_ALLOCATION_ASCENDING, |
80 | .chan_priority = CHAN_PRIORITY_ASCENDING, |
81 | .block_size = 131071, |
82 | .nr_masters = 1, |
83 | .data_width = {4}, |
84 | .quirks = DW_DMA_QUIRK_XBAR_PRESENT, |
85 | }; |
86 | |
87 | static __maybe_unused const struct dw_dma_chip_pdata xbar_chip_pdata = { |
88 | .pdata = &xbar_pdata, |
89 | .probe = idma32_dma_probe, |
90 | .remove = idma32_dma_remove, |
91 | }; |
92 | |
93 | #endif /* _DMA_DW_INTERNAL_H */ |
94 | |