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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _PXA_DMA_H_
3#define _PXA_DMA_H_
4
5enum pxad_chan_prio {
6 PXAD_PRIO_HIGHEST = 0,
7 PXAD_PRIO_NORMAL,
8 PXAD_PRIO_LOW,
9 PXAD_PRIO_LOWEST,
10};
11
12/**
13 * struct pxad_param - dma channel request parameters
14 * @drcmr: requestor line number
15 * @prio: minimal mandatory priority of the channel
16 *
17 * If a requested channel is granted, its priority will be at least @prio,
18 * ie. if PXAD_PRIO_LOW is required, the requested channel will be either
19 * PXAD_PRIO_LOW, PXAD_PRIO_NORMAL or PXAD_PRIO_HIGHEST.
20 */
21struct pxad_param {
22 unsigned int drcmr;
23 enum pxad_chan_prio prio;
24};
25
26struct dma_chan;
27
28#ifdef CONFIG_PXA_DMA
29bool pxad_filter_fn(struct dma_chan *chan, void *param);
30#else
31static inline bool pxad_filter_fn(struct dma_chan *chan, void *param)
32{
33 return false;
34}
35#endif
36
37#endif /* _PXA_DMA_H_ */