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| author | Eldad Zack <eldad@fogrefinery.com> | 2013-04-03 23:18:56 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-04-04 08:31:32 +0200 |
| commit | ef02e29b0180ddbcc1ecf3c362e333c572f27c08 (patch) | |
| tree | 2c645903e9fbff3996c5e32cb8993a86d9a6b0b4 /sound/usb/card.c | |
| parent | ALSA: usb-audio: UAC2: try to find and switch to valid clock (diff) | |
| download | linux-ef02e29b0180ddbcc1ecf3c362e333c572f27c08.tar.xz linux-ef02e29b0180ddbcc1ecf3c362e333c572f27c08.zip | |
ALSA: usb-audio: UAC2: auto clock selection module param
Add a module param to disable auto clock selection.
This is provided for users that expect the audio stream to
fail when the clock source is invalid (e.g., the word clock
was unintentionally disconnected).
Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/card.c')
| -rw-r--r-- | sound/usb/card.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/usb/card.c b/sound/usb/card.c index 314e8a211c9a..5254b18cedcd 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -82,6 +82,7 @@ static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; static int nrpacks = 8; /* max. number of packets per urb */ static int device_setup[SNDRV_CARDS]; /* device parameter for this card */ static bool ignore_ctl_error; +static bool autoclock = true; module_param_array(index, int, NULL, 0444); MODULE_PARM_DESC(index, "Index value for the USB audio adapter."); @@ -100,6 +101,8 @@ MODULE_PARM_DESC(device_setup, "Specific device setup (if needed)."); module_param(ignore_ctl_error, bool, 0444); MODULE_PARM_DESC(ignore_ctl_error, "Ignore errors from USB controller for mixer interfaces."); +module_param(autoclock, bool, 0444); +MODULE_PARM_DESC(autoclock, "Enable auto-clock selection for UAC2 devices (default: yes)."); /* * we keep the snd_usb_audio_t instances by ourselves for merging @@ -354,6 +357,7 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx, chip->card = card; chip->setup = device_setup[idx]; chip->nrpacks = nrpacks; + chip->autoclock = autoclock; chip->probing = 1; chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), |