diff options
| author | Andrej Krutak <dev@andree.sk> | 2016-09-18 20:59:22 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-09-19 22:58:50 +0200 |
| commit | 79faa2b048b23f28a24a7b232d8933cb53df95b7 (patch) | |
| tree | 0195ebdcd10c70f6e4171fda0aa225c4b6dc7b33 /sound/usb/line6/capture.c | |
| parent | b2233d97a0e64aa1f0557ffb409c957748ae7f3a (diff) | |
ALSA: line6: Add high-speed USB support
This has two parts:
* intervals_per_second setup
(high speed needs 8000, instead of 1000)
* iso_buffers setup (count of iso buffers depends on
USB speed, 2 is not enough for high speed)
Signed-off-by: Andrej Krutak <dev@andree.sk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/line6/capture.c')
| -rw-r--r-- | sound/usb/line6/capture.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sound/usb/line6/capture.c b/sound/usb/line6/capture.c index c2808a0b771a..596bc53d0775 100644 --- a/sound/usb/line6/capture.c +++ b/sound/usb/line6/capture.c @@ -181,7 +181,15 @@ static void audio_in_callback(struct urb *urb) length += fsize; - /* the following assumes LINE6_ISO_PACKETS == 1: */ + BUILD_BUG_ON_MSG(LINE6_ISO_PACKETS != 1, + "The following code assumes LINE6_ISO_PACKETS == 1"); + /* TODO: + * Also, if iso_buffers != 2, the prev frame is almost random at + * playback side. + * This needs to be redesigned. It should be "stable", but we may + * experience sync problems on such high-speed configs. + */ + line6pcm->prev_fbuf = fbuf; line6pcm->prev_fsize = fsize; |