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| author | Jonathan Woithe <jwoithe@physics.adelaide.edu.au> | 2006-02-09 11:53:48 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-03-22 10:28:42 +0100 |
| commit | 4c5186ed6b25278df595edf2d355ee87b00c4426 (patch) | |
| tree | 1114da4875d4925213e9c99d59dadf7673693900 /sound/pci/cmipci.c | |
| parent | ba22429d3ea3b9945735b88d4dde74711171ffab (diff) | |
| download | linux-4c5186ed6b25278df595edf2d355ee87b00c4426.tar.bz2 | |
[ALSA] hda: add PCM for 2nd ADC on ALC260
Modules: HDA Codec driver
The following patch against alsa 1.0.11rc3 creates a PCM device (pcm1c) for
the second ADC present on the ALC260 codec used by the hda driver. It also
defines a new mixer control allowing the mode of retasking pins to be set;
this means a user can (for example) designate the headphone jack to be a
second input. With this patch in place it is possible to do 4 channel
recording on laptops equipped with an ALC260 codec assuming both a stereo
line-in jack is provided in addition to a headphone jack.
Mixer controls are provided to allow the headphone jack to be switched as
an input. In addition, an (input only) mode control is configured for
the line-in jack to allow a bias voltage to be requested (VREF80 or VREF50)
so headsets based on condensor microphones have a chance of working.
This patch has been tested on a Fujitsu S7020 laptop and as such these
features are currently only configured for the 'fujitsu' model.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/cmipci.c')
0 files changed, 0 insertions, 0 deletions