| commit | 8d48c0163d1ab0f56a18ebe9898a34ebcfdfaa1a | |
| author | Takashi Iwai <tiwai@suse.de> | |
| Tue, 7 Feb 2017 07:05:46 +0000 (7 08:05 +0100) | ||
| committer | Takashi Iwai <tiwai@suse.de> | |
| Fri, 10 Feb 2017 09:21:42 +0000 (10 10:21 +0100) | ||
| tree | f58c097b7d324f5a886f774bf394e7cfd28c3373 | treesnapshot (tar.gz zip) |
| parent | a9ebdd0ef261fb9838af2821c09d165f6a14789b | commitdiff |
ALSA: x86: Allow single period PCM operation
This is an implementation of PCM streaming with only 1 period.
Since the hardware requires the refresh of BDs after each BD
processing finishes, we'd need at least two BDs. The trick is that
both BDs point to the same content: the address of the PCM buffer
head, and the whole buffer size. Then it loops over to the whole
buffer again after it finished once.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This is an implementation of PCM streaming with only 1 period.
Since the hardware requires the refresh of BDs after each BD
processing finishes, we'd need at least two BDs. The trick is that
both BDs point to the same content: the address of the PCM buffer
head, and the whole buffer size. Then it loops over to the whole
buffer again after it finished once.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| sound/x86/intel_hdmi_audio.c | diffblobblamehistory | |
| sound/x86/intel_hdmi_lpe_audio.h | diffblobblamehistory |