| Andy Shevchenko | 9cade1a | 2013-06-05 15:26:45 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Driver for the Synopsys DesignWare DMA Controller |
| 3 | * |
| 4 | * Copyright (C) 2013 Intel Corporation |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | |
| 11 | #ifndef _DW_DMAC_INTERNAL_H |
| 12 | #define _DW_DMAC_INTERNAL_H |
| 13 | |
| 14 | #include <linux/device.h> |
| 15 | #include <linux/dw_dmac.h> |
| 16 | |
| 17 | #include "regs.h" |
| 18 | |
| 19 | /** |
| 20 | * struct dw_dma_chip - representation of DesignWare DMA controller hardware |
| 21 | * @dev: struct device of the DMA controller |
| 22 | * @irq: irq line |
| 23 | * @regs: memory mapped I/O space |
| 24 | * @dw: struct dw_dma that is filed by dw_dma_probe() |
| 25 | */ |
| 26 | struct dw_dma_chip { |
| 27 | struct device *dev; |
| 28 | int irq; |
| 29 | void __iomem *regs; |
| 30 | struct dw_dma *dw; |
| 31 | }; |
| 32 | |
| 33 | /* Export to the platform drivers */ |
| 34 | int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata); |
| 35 | int dw_dma_remove(struct dw_dma_chip *chip); |
| 36 | |
| 37 | void dw_dma_shutdown(struct dw_dma_chip *chip); |
| 38 | |
| 39 | #ifdef CONFIG_PM_SLEEP |
| 40 | |
| 41 | int dw_dma_suspend(struct dw_dma_chip *chip); |
| 42 | int dw_dma_resume(struct dw_dma_chip *chip); |
| 43 | |
| 44 | #endif /* CONFIG_PM_SLEEP */ |
| 45 | |
| 46 | /** |
| 47 | * dwc_get_dms - get destination master |
| 48 | * @slave: pointer to the custom slave configuration |
| 49 | * |
| 50 | * Returns destination master in the custom slave configuration if defined, or |
| 51 | * default value otherwise. |
| 52 | */ |
| 53 | static inline unsigned int dwc_get_dms(struct dw_dma_slave *slave) |
| 54 | { |
| 55 | return slave ? slave->dst_master : 0; |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * dwc_get_sms - get source master |
| 60 | * @slave: pointer to the custom slave configuration |
| 61 | * |
| 62 | * Returns source master in the custom slave configuration if defined, or |
| 63 | * default value otherwise. |
| 64 | */ |
| 65 | static inline unsigned int dwc_get_sms(struct dw_dma_slave *slave) |
| 66 | { |
| 67 | return slave ? slave->src_master : 1; |
| 68 | } |
| 69 | |
| 70 | #endif /* _DW_DMAC_INTERNAL_H */ |