diff options
Diffstat (limited to 'Documentation/sound')
| -rw-r--r-- | Documentation/sound/alsa/HD-Audio-Models.txt | 14 | ||||
| -rw-r--r-- | Documentation/sound/alsa/Jack-Controls.txt | 43 | ||||
| -rw-r--r-- | Documentation/sound/oss/PSS-updates | 2 | ||||
| -rw-r--r-- | Documentation/sound/oss/README.OSS | 2 | ||||
| -rw-r--r-- | Documentation/sound/oss/btaudio | 2 |
5 files changed, 58 insertions, 5 deletions
diff --git a/Documentation/sound/alsa/HD-Audio-Models.txt b/Documentation/sound/alsa/HD-Audio-Models.txt index 5a3163cac6c3..ec099d4343f2 100644 --- a/Documentation/sound/alsa/HD-Audio-Models.txt +++ b/Documentation/sound/alsa/HD-Audio-Models.txt @@ -11,7 +11,10 @@ ALC880 ALC260 ====== - N/A + gpio1 Enable GPIO1 + coef Enable EAPD via COEF table + fujitsu Quirk for FSC S7020 + fujitsu-jwse Quirk for FSC S7020 with jack modes and HP mic support ALC262 ====== @@ -20,8 +23,9 @@ ALC262 ALC267/268 ========== inv-dmic Inverted internal mic workaround + hp-eapd Disable HP EAPD on NID 0x15 -ALC269/270/275/276/28x/29x +ALC22x/23x/25x/269/27x/28x/29x (and vendor-specific ALC3xxx models) ====== laptop-amic Laptops with analog-mic input laptop-dmic Laptops with digital-mic input @@ -29,9 +33,15 @@ ALC269/270/275/276/28x/29x alc271-dmic Enable ALC271X digital mic workaround inv-dmic Inverted internal mic workaround headset-mic Indicates a combined headset (headphone+mic) jack + headset-mode More comprehensive headset support for ALC269 & co + headset-mode-no-hp-mic Headset mode support without headphone mic lenovo-dock Enables docking station I/O for some Lenovos + hp-gpio-led GPIO LED support on HP laptops dell-headset-multi Headset jack, which can also be used as mic-in dell-headset-dock Headset jack (without mic-in), and also dock I/O + alc283-dac-wcaps Fixups for Chromebook with ALC283 + alc283-sense-combo Combo jack sensing on ALC283 + tpt440-dock Pin configs for Lenovo Thinkpad Dock support ALC66x/67x/892 ============== diff --git a/Documentation/sound/alsa/Jack-Controls.txt b/Documentation/sound/alsa/Jack-Controls.txt new file mode 100644 index 000000000000..fe1c5e0c8555 --- /dev/null +++ b/Documentation/sound/alsa/Jack-Controls.txt @@ -0,0 +1,43 @@ +Why we need Jack kcontrols +========================== + +ALSA uses kcontrols to export audio controls(switch, volume, Mux, ...) +to user space. This means userspace applications like pulseaudio can +switch off headphones and switch on speakers when no headphones are +pluged in. + +The old ALSA jack code only created input devices for each registered +jack. These jack input devices are not readable by userspace devices +that run as non root. + +The new jack code creates embedded jack kcontrols for each jack that +can be read by any process. + +This can be combined with UCM to allow userspace to route audio more +intelligently based on jack insertion or removal events. + +Jack Kcontrol Internals +======================= + +Each jack will have a kcontrol list, so that we can create a kcontrol +and attach it to the jack, at jack creation stage. We can also add a +kcontrol to an existing jack, at anytime when required. + +Those kcontrols will be freed automatically when the Jack is freed. + +How to use jack kcontrols +========================= + +In order to keep compatibility, snd_jack_new() has been modified by +adding two params :- + + - @initial_kctl: if true, create a kcontrol and add it to the jack + list. + - @phantom_jack: Don't create a input device for phantom jacks. + +HDA jacks can set phantom_jack to true in order to create a phantom +jack and set initial_kctl to true to create an initial kcontrol with +the correct id. + +ASoC jacks should set initial_kctl as false. The pin name will be +assigned as the jack kcontrol name. diff --git a/Documentation/sound/oss/PSS-updates b/Documentation/sound/oss/PSS-updates index c84dd7597e64..11914a1dc7e7 100644 --- a/Documentation/sound/oss/PSS-updates +++ b/Documentation/sound/oss/PSS-updates @@ -41,7 +41,7 @@ pss_no_sound This module parameter is a flag that can be used to tell the driver to just configure non-sound components. 0 configures all components, a non-0 -value will only attept to configure the CDROM and joystick ports. This +value will only attempt to configure the CDROM and joystick ports. This parameter can be used by a user who only wished to use the builtin joystick and/or CDROM port(s) of his PSS sound card. If this driver is loaded with this parameter and with the parameter below set to true then a user can safely unload diff --git a/Documentation/sound/oss/README.OSS b/Documentation/sound/oss/README.OSS index 4be259428a1c..a085ea3611a1 100644 --- a/Documentation/sound/oss/README.OSS +++ b/Documentation/sound/oss/README.OSS @@ -1346,7 +1346,7 @@ implement nice real-time signal processing audio effect software and network telephones. The ACI mixer has to be switched into the "solo" mode for duplex operation in order to avoid feedback caused by the mixer (input hears output signal). You can de-/activate this mode -through toggleing the record button for the wave controller with an +through toggling the record button for the wave controller with an OSS-mixer. The PCM20 contains a radio tuner, which is also controlled by diff --git a/Documentation/sound/oss/btaudio b/Documentation/sound/oss/btaudio index 1a693e69d44b..effdb9a3f898 100644 --- a/Documentation/sound/oss/btaudio +++ b/Documentation/sound/oss/btaudio @@ -29,7 +29,7 @@ Driver Status Still somewhat experimental. The driver should work stable, i.e. it should'nt crash your box. It might not work as expected, have bugs, -not being fully OSS API compilant, ... +not being fully OSS API compliant, ... Latest versions are available from http://bytesex.org/bttv/, the driver is in the bttv tarball. Kernel patches might be available too, |