sound/usb/usx2y/usbusx2y.h

   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
  13 struct snd_usx2y_async_seq {
  14         struct urb      *urb[URBS_ASYNC_SEQ];
  15         char            *buffer;
  16 };
  17
  18 struct snd_usx2y_urb_seq {
  19         int     submitted;
  20         int     len;
  21         struct urb      *urb[] __counted_by(len);
  22 };
  23
  24 #include "usx2yhwdeppcm.h"
  25
  26 struct 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
  53 struct 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
  81 int usx2y_audio_create(struct snd_card *card);
  82
  83 int usx2y_async_seq04_init(struct usx2ydev *usx2y);
  84 int usx2y_in04_init(struct usx2ydev *usx2y);
  85
  86 #define NAME_ALLCAPS "US-X2Y"
  87
  88 #endif