diff options
| author | Andrej Krutak <dev@andree.sk> | 2016-09-18 21:59:22 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-09-19 23:58:50 +0300 |
| commit | 79faa2b048b23f28a24a7b232d8933cb53df95b7 (patch) | |
| tree | 0195ebdcd10c70f6e4171fda0aa225c4b6dc7b33 /sound/usb/line6/driver.h | |
| parent | b2233d97a0e64aa1f0557ffb409c957748ae7f3a (diff) | |
| download | linux-79faa2b048b23f28a24a7b232d8933cb53df95b7.tar.xz | |
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/driver.h')
| -rw-r--r-- | sound/usb/line6/driver.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/sound/usb/line6/driver.h b/sound/usb/line6/driver.h index 43dd1d06b5fa..a55eb8871b51 100644 --- a/sound/usb/line6/driver.h +++ b/sound/usb/line6/driver.h @@ -18,7 +18,13 @@ #include "midi.h" -#define USB_INTERVALS_PER_SECOND 1000 +/* USB 1.1 speed configuration */ +#define USB_LOW_INTERVALS_PER_SECOND 1000 +#define USB_LOW_ISO_BUFFERS 2 + +/* USB 2.0+ speed configuration */ +#define USB_HIGH_INTERVALS_PER_SECOND 8000 +#define USB_HIGH_ISO_BUFFERS 16 /* Fallback USB interval and max packet size values */ #define LINE6_FALLBACK_INTERVAL 10 @@ -109,12 +115,15 @@ struct usb_line6 { /* Properties */ const struct line6_properties *properties; - /* Interval (ms) */ + /* Interval for data USB packets */ int interval; + /* ...for isochronous transfers framing */ + int intervals_per_second; + /* Number of isochronous URBs used for frame transfers */ int iso_buffers; - /* Maximum size of USB packet */ + /* Maximum size of data USB packet */ int max_packet_size; /* Device representing the USB interface */ |