| Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 1 | #ifndef __USBAUDIO_CARD_H |
| 2 | #define __USBAUDIO_CARD_H |
| 3 | |
| 4 | #define MAX_PACKS 20 |
| 5 | #define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */ |
| 6 | #define MAX_URBS 8 |
| 7 | #define SYNC_URBS 4 /* always four urbs for sync */ |
| 8 | #define MAX_QUEUE 24 /* try not to exceed this queue length, in ms */ |
| 9 | |
| 10 | struct audioformat { |
| 11 | struct list_head list; |
| 12 | snd_pcm_format_t format; /* format type */ |
| 13 | unsigned int channels; /* # channels */ |
| 14 | unsigned int fmt_type; /* USB audio format type (1-3) */ |
| 15 | unsigned int frame_size; /* samples per frame for non-audio */ |
| 16 | int iface; /* interface number */ |
| 17 | unsigned char altsetting; /* corresponding alternate setting */ |
| 18 | unsigned char altset_idx; /* array index of altenate setting */ |
| 19 | unsigned char attributes; /* corresponding attributes of cs endpoint */ |
| 20 | unsigned char endpoint; /* endpoint */ |
| 21 | unsigned char ep_attr; /* endpoint attributes */ |
| 22 | unsigned char datainterval; /* log_2 of data packet interval */ |
| 23 | unsigned int maxpacksize; /* max. packet size */ |
| 24 | unsigned int rates; /* rate bitmasks */ |
| 25 | unsigned int rate_min, rate_max; /* min/max rates */ |
| 26 | unsigned int nr_rates; /* number of rate table entries */ |
| 27 | unsigned int *rate_table; /* rate table */ |
| 28 | }; |
| 29 | |
| 30 | struct snd_usb_substream; |
| 31 | |
| 32 | struct snd_urb_ctx { |
| 33 | struct urb *urb; |
| 34 | unsigned int buffer_size; /* size of data buffer, if data URB */ |
| 35 | struct snd_usb_substream *subs; |
| 36 | int index; /* index for urb array */ |
| 37 | int packets; /* number of packets per urb */ |
| 38 | }; |
| 39 | |
| 40 | struct snd_urb_ops { |
| 41 | int (*prepare)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); |
| 42 | int (*retire)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); |
| 43 | int (*prepare_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); |
| 44 | int (*retire_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); |
| 45 | }; |
| 46 | |
| 47 | struct snd_usb_substream { |
| 48 | struct snd_usb_stream *stream; |
| 49 | struct usb_device *dev; |
| 50 | struct snd_pcm_substream *pcm_substream; |
| 51 | int direction; /* playback or capture */ |
| 52 | int interface; /* current interface */ |
| 53 | int endpoint; /* assigned endpoint */ |
| 54 | struct audioformat *cur_audiofmt; /* current audioformat pointer (for hw_params callback) */ |
| 55 | unsigned int cur_rate; /* current rate (for hw_params callback) */ |
| 56 | unsigned int period_bytes; /* current period bytes (for hw_params callback) */ |
| Clemens Ladisch | e11b4e0 | 2010-03-04 19:46:14 +0100 | [diff] [blame^] | 57 | unsigned int altset_idx; /* USB data format: index of alternate setting */ |
| Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 58 | unsigned int datapipe; /* the data i/o pipe */ |
| 59 | unsigned int syncpipe; /* 1 - async out or adaptive in */ |
| 60 | unsigned int datainterval; /* log_2 of data packet interval */ |
| 61 | unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */ |
| 62 | unsigned int freqn; /* nominal sampling rate in fs/fps in Q16.16 format */ |
| 63 | unsigned int freqm; /* momentary sampling rate in fs/fps in Q16.16 format */ |
| 64 | unsigned int freqmax; /* maximum sampling rate, used for buffer management */ |
| 65 | unsigned int phase; /* phase accumulator */ |
| 66 | unsigned int maxpacksize; /* max packet size in bytes */ |
| 67 | unsigned int maxframesize; /* max packet size in frames */ |
| 68 | unsigned int curpacksize; /* current packet size in bytes (for capture) */ |
| 69 | unsigned int curframesize; /* current packet size in frames (for capture) */ |
| 70 | unsigned int fill_max: 1; /* fill max packet size always */ |
| 71 | unsigned int txfr_quirk:1; /* allow sub-frame alignment */ |
| 72 | unsigned int fmt_type; /* USB audio format type (1-3) */ |
| 73 | |
| 74 | unsigned int running: 1; /* running status */ |
| 75 | |
| 76 | unsigned int hwptr_done; /* processed byte position in the buffer */ |
| 77 | unsigned int transfer_done; /* processed frames since last period update */ |
| 78 | unsigned long active_mask; /* bitmask of active urbs */ |
| 79 | unsigned long unlink_mask; /* bitmask of unlinked urbs */ |
| 80 | |
| 81 | unsigned int nurbs; /* # urbs */ |
| 82 | struct snd_urb_ctx dataurb[MAX_URBS]; /* data urb table */ |
| 83 | struct snd_urb_ctx syncurb[SYNC_URBS]; /* sync urb table */ |
| 84 | char *syncbuf; /* sync buffer for all sync URBs */ |
| 85 | dma_addr_t sync_dma; /* DMA address of syncbuf */ |
| 86 | |
| 87 | u64 formats; /* format bitmasks (all or'ed) */ |
| 88 | unsigned int num_formats; /* number of supported audio formats (list) */ |
| 89 | struct list_head fmt_list; /* format list */ |
| 90 | struct snd_pcm_hw_constraint_list rate_list; /* limited rates */ |
| 91 | spinlock_t lock; |
| 92 | |
| 93 | struct snd_urb_ops ops; /* callbacks (must be filled at init) */ |
| 94 | }; |
| 95 | |
| 96 | struct snd_usb_stream { |
| 97 | struct snd_usb_audio *chip; |
| 98 | struct snd_pcm *pcm; |
| 99 | int pcm_index; |
| 100 | unsigned int fmt_type; /* USB audio format type (1-3) */ |
| 101 | struct snd_usb_substream substream[2]; |
| 102 | struct list_head list; |
| 103 | }; |
| 104 | |
| 105 | #endif /* __USBAUDIO_CARD_H */ |