linux-kernel - [PATCH v2 0/2] Make headphone work on Huawei Matebook D15

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Date:   Tue,  5 Apr 2022 10:44:11 +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 v2 0/2] Make headphone work on Huawei Matebook D15

At Huawei Matebook D15 two different GPIOs are used to control the output:
	- gpio0 controls the speaker output;
	- gpio1 controls the headphone output.

Changing both at the same time cause spurious events that are mis-interpreted
as input events, causing troubles on apps. So, a delay is needed before turning
on such gpios.

With this patch, plugging a headphone causes a jack event to trigger the speaker
supply, powering down the speaker and powering up the headphone output.
Removing the headphone also triggers the power supply, powering up the speaker
and powering down the headphone.

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 | 68 ++++++++++++++++++++++++-----
 1 file changed, 58 insertions(+), 10 deletions(-)

-- 
2.35.1