| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _PXA_DMA_H_ |
| #define _PXA_DMA_H_ |
| |
| enum pxad_chan_prio { |
| PXAD_PRIO_HIGHEST = 0, |
| PXAD_PRIO_NORMAL, |
| PXAD_PRIO_LOW, |
| PXAD_PRIO_LOWEST, |
| }; |
| |
| /** |
| * struct pxad_param - dma channel request parameters |
| * @drcmr: requestor line number |
| * @prio: minimal mandatory priority of the channel |
| * |
| * If a requested channel is granted, its priority will be at least @prio, |
| * ie. if PXAD_PRIO_LOW is required, the requested channel will be either |
| * PXAD_PRIO_LOW, PXAD_PRIO_NORMAL or PXAD_PRIO_HIGHEST. |
| */ |
| struct pxad_param { |
| unsigned int drcmr; |
| enum pxad_chan_prio prio; |
| }; |
| |
| struct dma_chan; |
| |
| #ifdef CONFIG_PXA_DMA |
| bool pxad_filter_fn(struct dma_chan *chan, void *param); |
| #else |
| static inline bool pxad_filter_fn(struct dma_chan *chan, void *param) |
| { |
| return false; |
| } |
| #endif |
| |
| #endif /* _PXA_DMA_H_ */ |
