diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
| commit | 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch) | |
| tree | fa581f6dc1c0596391690d1f67eceef3af8246dc /Documentation/sound | |
| parent | d4e493caf788ef44982e131ff9c786546904d934 (diff) | |
Linux-libre 4.5-gnu
Diffstat (limited to 'Documentation/sound')
| -rw-r--r-- | Documentation/sound/alsa/img,spdif-in.txt | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/img,spdif-in.txt b/Documentation/sound/alsa/img,spdif-in.txt new file mode 100644 index 000000000..8b7505785 --- /dev/null +++ b/Documentation/sound/alsa/img,spdif-in.txt @@ -0,0 +1,49 @@ +The Imagination Technologies SPDIF Input controller contains the following +controls: + +name='IEC958 Capture Mask',index=0 + +This control returns a mask that shows which of the IEC958 status bits +can be read using the 'IEC958 Capture Default' control. + +name='IEC958 Capture Default',index=0 + +This control returns the status bits contained within the SPDIF stream that +is being received. The 'IEC958 Capture Mask' shows which bits can be read +from this control. + +name='SPDIF In Multi Frequency Acquire',index=0 +name='SPDIF In Multi Frequency Acquire',index=1 +name='SPDIF In Multi Frequency Acquire',index=2 +name='SPDIF In Multi Frequency Acquire',index=3 + +This control is used to attempt acquisition of up to four different sample +rates. The active rate can be obtained by reading the 'SPDIF In Lock Frequency' +control. + +When the value of this control is set to {0,0,0,0}, the rate given to hw_params +will determine the single rate the block will capture. Else, the rate given to +hw_params will be ignored, and the block will attempt capture for each of the +four sample rates set here. + +If less than four rates are required, the same rate can be specified more than +once + +name='SPDIF In Lock Frequency',index=0 + +This control returns the active capture rate, or 0 if a lock has not been +acquired + +name='SPDIF In Lock TRK',index=0 + +This control is used to modify the locking/jitter rejection characteristics +of the block. Larger values increase the locking range, but reduce jitter +rejection. + +name='SPDIF In Lock Acquire Threshold',index=0 + +This control is used to change the threshold at which a lock is acquired. + +name='SPDIF In Lock Release Threshold',index=0 + +This control is used to change the threshold at which a lock is released. |