diff options
| author | Libin Yang <libin.yang@linux.intel.com> | 2015-12-16 16:48:15 +0800 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-01-29 07:34:56 +0100 |
| commit | a76056f2e57ec2825d6ae4be016596dd37300750 (patch) | |
| tree | fa6bd2215b738b28d1b593f917668216c1a56552 /include/sound | |
| parent | 2bf3c85a5b167a6c87d9d7d655af85d85d51769b (diff) | |
ALSA: hda - hdmi dynamically bind PCM to pin when monitor hotplug
Dynamically bind/unbind the PCM to pin when HDMI/DP monitor hotplug.
When monitor is connected, find a proper PCM for the monitor.
When monitor is disconnected, unbind the PCM from the pin.
The binding policy (use Intel platform as example) is:
1. Try to use the legacy pin-pcm mapping for the device entry 0
of the pin.
2. If step 1 fails, try to bind pin to the backup PCMs. For example,
on Intel platform, if DP MST is enabled, 5 PCMs will be created.
PCM 3, PCM 7, PCM 8 are supposed to be used by device entry 0 of
pin 5, pin 6 and pin 7. PCM 9 and PCM 10 are the backup PCMs.
3. If step 2 fails, try to find any PCM to bind to the pin.
Signed-off-by: Libin Yang <libin.yang@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound')
0 files changed, 0 insertions, 0 deletions