linux-kernel - [PATCH RFC 0/2] Make headphone work on Huawei Matebook D15

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Date:   Sun,  3 Apr 2022 10:59:23 +0200
From:   Mauro Carvalho Chehab <mchehab@...nel.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Péter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
        Bard Liao <yung-chuan.liao@...ux.intel.com>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Jie Yang <yang.jie@...ux.intel.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH RFC 0/2] Make headphone work on Huawei Matebook D15

The headphone output at Huawei Matebook D15 is controlled by a separate
GPIO than the speaker. So, the es8336 boards logic need to handle two events:
one for the speaker switch and another one for the headphone.

Please notice that this is my first real incursion at SOC/SOF. While this is working
fine, I'm still struggling with some troubles with pipewire, which I believe are
due to UCM support, as, sometimes when pavucontrol starts, the playback stucks.
Also, sometimes the mixers won't change when jack plug/unplug is detected.

So, more debug is needed, and probably the UCM will also need to be closer to
the definitions that are used at ucm2/codecs/es8316/, as es8336 is a variant of
it.

Anyway, let me submit this as as RFC, in order to get some feedback if this is
going at the right way to support the headphone switch event.

Mauro Carvalho Chehab (2):
  ASoC: Intel: sof_es8336: support a separate gpio to control headphone
  ASoC: Intel: sof_es8336: Huawei Matebook D15 uses a headphone gpio

 sound/soc/intel/boards/sof_es8336.c | 84 ++++++++++++++++++++++-------
 1 file changed, 65 insertions(+), 19 deletions(-)

-- 
2.35.1