1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef USBUSX2Y_H
3#define USBUSX2Y_H
4#include "../usbaudio.h"
5#include "../midi.h"
6#include "usbus428ctldefs.h"
7
8#define NRURBS	        2
9
10
11#define URBS_ASYNC_SEQ 10
12#define URB_DATA_LEN_ASYNC_SEQ 32
13struct snd_usx2y_async_seq {
14	struct urb	*urb[URBS_ASYNC_SEQ];
15	char		*buffer;
16};
17
18struct snd_usx2y_urb_seq {
19	int	submitted;
20	int	len;
21	struct urb	*urb[] __counted_by(len);
22};
23
24#include "usx2yhwdeppcm.h"
25
26struct usx2ydev {
27	struct usb_device	*dev;
28	int			card_index;
29	int			stride;
30	struct urb		*in04_urb;
31	void			*in04_buf;
32	char			in04_last[24];
33	unsigned int		in04_int_calls;
34	struct snd_usx2y_urb_seq	*us04;
35	wait_queue_head_t	in04_wait_queue;
36	struct snd_usx2y_async_seq	as04;
37	unsigned int		rate,
38				format;
39	int			chip_status;
40	struct mutex		pcm_mutex;
41	struct us428ctls_sharedmem	*us428ctls_sharedmem;
42	int			wait_iso_frame;
43	wait_queue_head_t	us428ctls_wait_queue_head;
44	struct snd_usx2y_hwdep_pcm_shm	*hwdep_pcm_shm;
45	struct snd_usx2y_substream	*subs[4];
46	struct snd_usx2y_substream	* volatile  prepare_subs;
47	wait_queue_head_t	prepare_wait_queue;
48	struct list_head	midi_list;
49	int			pcm_devs;
50};
51
52
53struct snd_usx2y_substream {
54	struct usx2ydev	*usx2y;
55	struct snd_pcm_substream *pcm_substream;
56
57	int			endpoint;
58	unsigned int		maxpacksize;		/* max packet size in bytes */
59
60	atomic_t		state;
61#define STATE_STOPPED	0
62#define STATE_STARTING1 1
63#define STATE_STARTING2 2
64#define STATE_STARTING3 3
65#define STATE_PREPARED	4
66#define STATE_PRERUNNING  6
67#define STATE_RUNNING	8
68
69	int			hwptr;			/* free frame position in the buffer (only for playback) */
70	int			hwptr_done;		/* processed frame position in the buffer */
71	int			transfer_done;		/* processed frames since last period update */
72
73	struct urb		*urb[NRURBS];	/* data urb table */
74	struct urb		*completed_urb;
75	char			*tmpbuf;			/* temporary buffer for playback */
76};
77
78
79#define usx2y(c) ((struct usx2ydev *)(c)->private_data)
80
81int usx2y_audio_create(struct snd_card *card);
82
83int usx2y_async_seq04_init(struct usx2ydev *usx2y);
84int usx2y_in04_init(struct usx2ydev *usx2y);
85
86#define NAME_ALLCAPS "US-X2Y"
87
88#endif
89