root/sound/usb/usx2y/usbusx2y.h

INCLUDED FROM

   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_AsyncSeq 10
  12 #define URB_DataLen_AsyncSeq 32
  13 struct snd_usX2Y_AsyncSeq {
  14         struct urb      *urb[URBS_AsyncSeq];
  15         char            *buffer;
  16 };
  17 
  18 struct snd_usX2Y_urbSeq {
  19         int     submitted;
  20         int     len;
  21         struct urb      *urb[0];
  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              *In04urb;
  31         void                    *In04Buf;
  32         char                    In04Last[24];
  33         unsigned                In04IntCalls;
  34         struct snd_usX2Y_urbSeq *US04;
  35         wait_queue_head_t       In04WaitQueue;
  36         struct snd_usX2Y_AsyncSeq       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         struct list_head        pcm_list;
  50         int                     pcm_devs;
  51 };
  52 
  53 
  54 struct snd_usX2Y_substream {
  55         struct usX2Ydev *usX2Y;
  56         struct snd_pcm_substream *pcm_substream;
  57 
  58         int                     endpoint;               
  59         unsigned int            maxpacksize;            /* max packet size in bytes */
  60 
  61         atomic_t                state;
  62 #define state_STOPPED   0
  63 #define state_STARTING1 1
  64 #define state_STARTING2 2
  65 #define state_STARTING3 3
  66 #define state_PREPARED  4
  67 #define state_PRERUNNING  6
  68 #define state_RUNNING   8
  69 
  70         int                     hwptr;                  /* free frame position in the buffer (only for playback) */
  71         int                     hwptr_done;             /* processed frame position in the buffer */
  72         int                     transfer_done;          /* processed frames since last period update */
  73 
  74         struct urb              *urb[NRURBS];   /* data urb table */
  75         struct urb              *completed_urb;
  76         char                    *tmpbuf;                        /* temporary buffer for playback */
  77 };
  78 
  79 
  80 #define usX2Y(c) ((struct usX2Ydev *)(c)->private_data)
  81 
  82 int usX2Y_audio_create(struct snd_card *card);
  83 
  84 int usX2Y_AsyncSeq04_init(struct usX2Ydev *usX2Y);
  85 int usX2Y_In04_init(struct usX2Ydev *usX2Y);
  86 
  87 #define NAME_ALLCAPS "US-X2Y"
  88 
  89 #endif