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author | Takashi Iwai <tiwai@suse.de> | 2016-11-09 16:56:01 +0100 |
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committer | Takashi Iwai <tiwai@suse.de> | 2016-11-10 17:59:22 +0100 |
commit | fe0abd18e1ef3cb258b0a5e41ba26ed0c4b88dab (patch) | |
tree | d0a65f5fb51046e700b91bc32b073ba827ad7f34 /Documentation/sound/alsa | |
parent | a4caad753f0ccc201482bee4bdaa1875524bf2ab (diff) | |
download | op-kernel-dev-fe0abd18e1ef3cb258b0a5e41ba26ed0c4b88dab.zip op-kernel-dev-fe0abd18e1ef3cb258b0a5e41ba26ed0c4b88dab.tar.gz |
ALSA: doc: ReSTize HD-Audio-Controls document
A conversion from a simple text file.
Put to hd-audio subdirectory with a rename.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'Documentation/sound/alsa')
-rw-r--r-- | Documentation/sound/alsa/HD-Audio-Controls.txt | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/Documentation/sound/alsa/HD-Audio-Controls.txt b/Documentation/sound/alsa/HD-Audio-Controls.txt deleted file mode 100644 index e9621e3..0000000 --- a/Documentation/sound/alsa/HD-Audio-Controls.txt +++ /dev/null @@ -1,116 +0,0 @@ -This file explains the codec-specific mixer controls. - -Realtek codecs --------------- - -* Channel Mode - This is an enum control to change the surround-channel setup, - appears only when the surround channels are available. - It gives the number of channels to be used, "2ch", "4ch", "6ch", - and "8ch". According to the configuration, this also controls the - jack-retasking of multi-I/O jacks. - -* Auto-Mute Mode - This is an enum control to change the auto-mute behavior of the - headphone and line-out jacks. If built-in speakers and headphone - and/or line-out jacks are available on a machine, this controls - appears. - When there are only either headphones or line-out jacks, it gives - "Disabled" and "Enabled" state. When enabled, the speaker is muted - automatically when a jack is plugged. - - When both headphone and line-out jacks are present, it gives - "Disabled", "Speaker Only" and "Line-Out+Speaker". When - speaker-only is chosen, plugging into a headphone or a line-out jack - mutes the speakers, but not line-outs. When line-out+speaker is - selected, plugging to a headphone jack mutes both speakers and - line-outs. - - -IDT/Sigmatel codecs -------------------- - -* Analog Loopback - This control enables/disables the analog-loopback circuit. This - appears only when "loopback" is set to true in a codec hint - (see HD-Audio.txt). Note that on some codecs the analog-loopback - and the normal PCM playback are exclusive, i.e. when this is on, you - won't hear any PCM stream. - -* Swap Center/LFE - Swaps the center and LFE channel order. Normally, the left - corresponds to the center and the right to the LFE. When this is - ON, the left to the LFE and the right to the center. - -* Headphone as Line Out - When this control is ON, treat the headphone jacks as line-out - jacks. That is, the headphone won't auto-mute the other line-outs, - and no HP-amp is set to the pins. - -* Mic Jack Mode, Line Jack Mode, etc - These enum controls the direction and the bias of the input jack - pins. Depending on the jack type, it can set as "Mic In" and "Line - In", for determining the input bias, or it can be set to "Line Out" - when the pin is a multi-I/O jack for surround channels. - - -VIA codecs ----------- - -* Smart 5.1 - An enum control to re-task the multi-I/O jacks for surround outputs. - When it's ON, the corresponding input jacks (usually a line-in and a - mic-in) are switched as the surround and the CLFE output jacks. - -* Independent HP - When this enum control is enabled, the headphone output is routed - from an individual stream (the third PCM such as hw:0,2) instead of - the primary stream. In the case the headphone DAC is shared with a - side or a CLFE-channel DAC, the DAC is switched to the headphone - automatically. - -* Loopback Mixing - An enum control to determine whether the analog-loopback route is - enabled or not. When it's enabled, the analog-loopback is mixed to - the front-channel. Also, the same route is used for the headphone - and speaker outputs. As a side-effect, when this mode is set, the - individual volume controls will be no longer available for - headphones and speakers because there is only one DAC connected to a - mixer widget. - -* Dynamic Power-Control - This control determines whether the dynamic power-control per jack - detection is enabled or not. When enabled, the widgets power state - (D0/D3) are changed dynamically depending on the jack plugging - state for saving power consumptions. However, if your system - doesn't provide a proper jack-detection, this won't work; in such a - case, turn this control OFF. - -* Jack Detect - This control is provided only for VT1708 codec which gives no proper - unsolicited event per jack plug. When this is on, the driver polls - the jack detection so that the headphone auto-mute can work, while - turning this off would reduce the power consumption. - - -Conexant codecs ---------------- - -* Auto-Mute Mode - See Reatek codecs. - - -Analog codecs --------------- - -* Channel Mode - This is an enum control to change the surround-channel setup, - appears only when the surround channels are available. - It gives the number of channels to be used, "2ch", "4ch" and "6ch". - According to the configuration, this also controls the - jack-retasking of multi-I/O jacks. - -* Independent HP - When this enum control is enabled, the headphone output is routed - from an individual stream (the third PCM such as hw:0,2) instead of - the primary stream. |