[PATCH v2] alsa: Add support for sound cards with 4-channel input.

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On Tue, 2012-05-01 at 20:09 +0300, Tanu Kaskinen wrote:
> Changes in v2:
>  - Call the mapping a generic 4-channel input mapping
>    instead of a 4-channel mic array mapping. The mapping
>    will be used also by sound cards that have two stereo
>    input jacks, so in those cases talking about mic arrays
>    is wrong.
>  - Added a comment about using the "hw" device name.
> 
> BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=45813
> ---
>  src/modules/alsa/alsa-mixer.c                    |    1 +
>  src/modules/alsa/mixer/profile-sets/default.conf |    9 +++++++++
>  2 files changed, 10 insertions(+)
> 
> diff --git a/src/modules/alsa/alsa-mixer.c b/src/modules/alsa/alsa-mixer.c
> index abb12ee..8b54f75 100644
> --- a/src/modules/alsa/alsa-mixer.c
> +++ b/src/modules/alsa/alsa-mixer.c
> @@ -3888,6 +3888,7 @@ static int mapping_verify(pa_alsa_mapping *m, const pa_channel_map *bonus) {
>          { "analog-surround-61",     N_("Analog Surround 6.1") },
>          { "analog-surround-70",     N_("Analog Surround 7.0") },
>          { "analog-surround-71",     N_("Analog Surround 7.1") },
> +        { "analog-4-channel-input", N_("Analog 4-channel Input") },

Since this is limited to some specific hardware, shouldn't we set up
udev rules instead of always probing?

-- Arun



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