| /* |
| * Driver for the High Speed UART DMA |
| * |
| * Copyright (C) 2015 Intel Corporation |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #ifndef _DMA_HSU_H |
| #define _DMA_HSU_H |
| |
| #include <linux/device.h> |
| #include <linux/interrupt.h> |
| |
| #include <linux/platform_data/dma-hsu.h> |
| |
| struct hsu_dma; |
| |
| /** |
| * struct hsu_dma_chip - representation of HSU DMA hardware |
| * @dev: struct device of the DMA controller |
| * @irq: irq line |
| * @regs: memory mapped I/O space |
| * @length: I/O space length |
| * @offset: offset of the I/O space where registers are located |
| * @hsu: struct hsu_dma that is filed by ->probe() |
| * @pdata: platform data for the DMA controller if provided |
| */ |
| struct hsu_dma_chip { |
| struct device *dev; |
| int irq; |
| void __iomem *regs; |
| unsigned int length; |
| unsigned int offset; |
| struct hsu_dma *hsu; |
| struct hsu_dma_platform_data *pdata; |
| }; |
| |
| /* Export to the internal users */ |
| irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip, unsigned short nr); |
| |
| /* Export to the platform drivers */ |
| int hsu_dma_probe(struct hsu_dma_chip *chip); |
| int hsu_dma_remove(struct hsu_dma_chip *chip); |
| |
| #endif /* _DMA_HSU_H */ |
