APPLIED [OEM-5.13] Re: [PATCH 0/2][SRU][U/OEM-5.13/OEM-5.14] Fix headphone microphone function for particular Dell laptops

[Timo Aaltonen]

On 14.10.2021 15.04, Chris Chiu wrote:
> BugLink: https://bugs.launchpad.net/bugs/1947092
> 
> [Impact]
> The Dell Latitude 5430 series with Realtek audio codec ALC3254 fail to detect the headphone microphone and thus unable to do recording.
> 
> [Fix]
> The realtek audio quirk ALC269_FIXUP_DELL4_MIC_NO_PRESENCE is required since the NID used for headphone microphone should be 0x1b instead of 0x1a, which is used for former ALC225/295 variants.
> 
> [Test Case]
> 1. Plug in the headphone microphone on the particular Dell Latitude 5430 laptop
> 2. Make sure it's detected in Audio Settings. (pulseaudio)
> 3. Record the sound via the headphone microphone and check the recorded content.
> 
> [Where problems could occur]
> No. Since the audio quirk only affect the machine with particular subsystem ID.
> 
> Chris Chiu (1):
>    ALSA: hda - Enable headphone mic on Dell Latitude laptops with ALC3254
> 
> John Liu (1):
>    ALSA: hda/realtek: Enable 4-speaker output for Dell Precision 5560
>      laptop
> 
>   sound/pci/hda/patch_realtek.c | 3 +++
>   1 file changed, 3 insertions(+)
> 

applied to oem-5.13, 5.14 got it via stable

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