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| author |   Takashi Iwai <tiwai@suse.de> | 2020-11-23 09:53:11 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2020-11-23 15:11:56 +0100 |
| commit | c7474d09777c3d321f9f7f6a416f276204926c54 (patch) | |
| tree | b9785328f98b046dcdf5c214e513e60fd106e64d /sound/usb/endpoint.h | |
| parent | ALSA: usb-audio: Check implicit feedback EP generically for UAC2 (diff) | |
| download | linux-dev-c7474d09777c3d321f9f7f6a416f276204926c54.tar.xz linux-dev-c7474d09777c3d321f9f7f6a416f276204926c54.zip | |
ALSA: usb-audio: Add snd_usb_get_endpoint() helper
Factor out the code to obtain snd_usb_endpoint object matching with
the given endpoint. It'll be used in the later patch to add the
implicit feedback hw-constraint.
No functional change by this patch itself.
Tested-by: Keith Milner <kamilner@superlative.org>
Tested-by: Dylan Robinson <dylan_robinson@motu.com>
Link: https://lore.kernel.org/r/20201123085347.19667-6-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/endpoint.h')
| -rw-r--r-- | sound/usb/endpoint.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/usb/endpoint.h b/sound/usb/endpoint.h index d23fa0a8c11b..61487095a766 100644 --- a/sound/usb/endpoint.h +++ b/sound/usb/endpoint.h @@ -5,6 +5,10 @@ #define SND_USB_ENDPOINT_TYPE_DATA 0 #define SND_USB_ENDPOINT_TYPE_SYNC 1 +struct snd_usb_endpoint *snd_usb_get_endpoint(struct snd_usb_audio *chip, + int ep_num, int iface, + int altsetting); + struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip, struct usb_host_interface *alts, int ep_num, int direction, int type); |