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authorGrant Likely <grant.likely@secretlab.ca>2010-05-22 02:36:56 -0400
committerGrant Likely <grant.likely@secretlab.ca>2010-05-22 02:36:56 -0400
commitcf9b59e9d3e008591d1f54830f570982bb307a0d (patch)
tree113478ce8fd8c832ba726ffdf59b82cb46356476 /sound/usb/card.h
parent44504b2bebf8b5823c59484e73096a7d6574471d (diff)
parentf4b87dee923342505e1ddba8d34ce9de33e75050 (diff)
Merge remote branch 'origin' into secretlab/next-devicetree
Merging in current state of Linus' tree to deal with merge conflicts and build failures in vio.c after merge. Conflicts: drivers/i2c/busses/i2c-cpm.c drivers/i2c/busses/i2c-mpc.c drivers/net/gianfar.c Also fixed up one line in arch/powerpc/kernel/vio.c to use the correct node pointer. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'sound/usb/card.h')
-rw-r--r--sound/usb/card.h105
1 files changed, 105 insertions, 0 deletions
diff --git a/sound/usb/card.h b/sound/usb/card.h
new file mode 100644
index 000000000000..ed92420c1095
--- /dev/null
+++ b/sound/usb/card.h
@@ -0,0 +1,105 @@
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
10struct audioformat {
11 struct list_head list;
12 u64 formats; /* ALSA format bits */
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
30struct snd_usb_substream;
31
32struct 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
40struct 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
47struct 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) */
57 unsigned int altset_idx; /* USB data format: index of alternate setting */
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
96struct 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 */