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