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| author | Takashi Iwai <tiwai@suse.de> | 2021-09-29 11:08:36 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-09-30 14:55:18 +0300 |
| commit | 4e7cf1fbb34ecb472c073980458cbe413afd4d64 (patch) | |
| tree | 058c5de079f8c9a3e2e1619c6550740d4b59508c /sound/usb/endpoint.h | |
| parent | c4ca3871e21fa085096316f5f8d9975cf3dfde1d (diff) | |
| download | linux-4e7cf1fbb34ecb472c073980458cbe413afd4d64.tar.xz | |
ALSA: usb-audio: Restrict rates for the shared clocks
When a single clock source is shared among several endpoints, we have
to keep the same rate on all active endpoints as long as the clock is
being used. For dealing with such a case, this patch adds one more
check in the hw params constraint for the rate to take the shared
clocks into account. The current rate is evaluated from the endpoint
list that applies the same clock source.
BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1190418
Link: https://lore.kernel.org/r/20210929080844.11583-2-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 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/usb/endpoint.h b/sound/usb/endpoint.h index a668f675b52b..a1099ec37e1c 100644 --- a/sound/usb/endpoint.h +++ b/sound/usb/endpoint.h @@ -19,6 +19,7 @@ void snd_usb_endpoint_close(struct snd_usb_audio *chip, struct snd_usb_endpoint *ep); int snd_usb_endpoint_configure(struct snd_usb_audio *chip, struct snd_usb_endpoint *ep); +int snd_usb_endpoint_get_clock_rate(struct snd_usb_audio *chip, int clock); bool snd_usb_endpoint_compatible(struct snd_usb_audio *chip, struct snd_usb_endpoint *ep, |