xref: /openbmc/linux/sound/soc/sprd/sprd-pcm-dma.h (revision 27ecad21)
1 // SPDX-License-Identifier: GPL-2.0
2 
3 #ifndef __SPRD_PCM_DMA_H
4 #define __SPRD_PCM_DMA_H
5 
6 #define DRV_NAME		"sprd_pcm_dma"
7 #define SPRD_PCM_CHANNEL_MAX	2
8 
9 extern const struct snd_compress_ops sprd_platform_compress_ops;
10 
11 struct sprd_pcm_dma_params {
12 	dma_addr_t dev_phys[SPRD_PCM_CHANNEL_MAX];
13 	u32 datawidth[SPRD_PCM_CHANNEL_MAX];
14 	u32 fragment_len[SPRD_PCM_CHANNEL_MAX];
15 	const char *chan_name[SPRD_PCM_CHANNEL_MAX];
16 };
17 
18 struct sprd_compr_playinfo {
19 	int total_time;
20 	int current_time;
21 	int total_data_length;
22 	int current_data_offset;
23 };
24 
25 struct sprd_compr_params {
26 	u32 direction;
27 	u32 rate;
28 	u32 sample_rate;
29 	u32 channels;
30 	u32 format;
31 	u32 period;
32 	u32 periods;
33 	u32 info_phys;
34 	u32 info_size;
35 };
36 
37 struct sprd_compr_callback {
38 	void (*drain_notify)(void *data);
39 	void *drain_data;
40 };
41 
42 struct sprd_compr_ops {
43 	int (*open)(int str_id, struct sprd_compr_callback *cb);
44 	int (*close)(int str_id);
45 	int (*start)(int str_id);
46 	int (*stop)(int str_id);
47 	int (*pause)(int str_id);
48 	int (*pause_release)(int str_id);
49 	int (*drain)(int received_total);
50 	int (*set_params)(int str_id, struct sprd_compr_params *params);
51 };
52 
53 struct sprd_compr_data {
54 	struct sprd_compr_ops *ops;
55 	struct sprd_pcm_dma_params *dma_params;
56 };
57 
58 #endif /* __SPRD_PCM_DMA_H */
59