1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Driver for the Synopsys DesignWare DMA Controller
5 * Copyright (C) 2013 Intel Corporation
8 #ifndef _DMA_DW_INTERNAL_H
9 #define _DMA_DW_INTERNAL_H
11 #include <linux/dma/dw.h>
15 int do_dma_probe(struct dw_dma_chip *chip);
16 int do_dma_remove(struct dw_dma_chip *chip);
18 void do_dw_dma_on(struct dw_dma *dw);
19 void do_dw_dma_off(struct dw_dma *dw);
21 int do_dw_dma_disable(struct dw_dma_chip *chip);
22 int do_dw_dma_enable(struct dw_dma_chip *chip);
24 extern bool dw_dma_filter(struct dma_chan *chan, void *param);
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 */
34 struct platform_device;
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);
41 static inline struct dw_dma_platform_data *dw_dma_parse_dt(struct platform_device *pdev)
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) {}
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;
56 static __maybe_unused const struct dw_dma_chip_pdata dw_dma_chip_pdata = {
57 .probe = dw_dma_probe,
58 .remove = dw_dma_remove,
61 static const struct dw_dma_platform_data idma32_pdata = {
63 .chan_allocation_order = CHAN_ALLOCATION_ASCENDING,
64 .chan_priority = CHAN_PRIORITY_ASCENDING,
68 .multi_block = {1, 1, 1, 1, 1, 1, 1, 1},
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,
77 #endif /* _DMA_DW_INTERNAL_H */