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

source code of linux/sound/usb/usx2y/usbusx2y.h