linux-kernel - [PATCH v2 0/6] ASoC: codecs: msm8916-wcd-analog: Add support to MBHC

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Message-Id: <20170802170930.26083-1-srinivas.kandagatla@linaro.org>
Date:   Wed,  2 Aug 2017 19:09:24 +0200
From:   srinivas.kandagatla@...aro.org
To:     Mark Brown <broonie@...nel.org>,
        Banajit Goswami <bgoswami@...eaurora.org>,
        alsa-devel@...a-project.org
Cc:     damien.riegel@...oirfairelinux.com,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Patrick Lai <plai@...eaurora.org>,
        linux-kernel@...r.kernel.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH v2 0/6] ASoC: codecs: msm8916-wcd-analog: Add support to MBHC

From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>

This patchset adds support to MBHC(Multibutton headset control) block in PM8916
analog block. MBHC support comes from2 blocks first mechanical headset detection
and second headset type, 5 button detection.

This patchset adds support to:
1> Support to NC and NO type of headset Jacks.
2> Mechanical insertion and detection of headset jack.
3> Detect a 3 pole Headphone and a 4 pole Headset.
4> Detect 5 buttons.

Damien sent a similar patchset to add support to mechanical detection,
but that patch has issues and will not work on most usecases (for example
after a playback/capture session, multicodec case). So I only picked up
the BIT mask patch from that series.

Tested it on DB410c with Audio Mezz board with 4 pole and 3 pole
and during playback and recording use cases.

Changes since v1(https://www.spinics.net/lists/kernel/msg2565463.html):
	- Micbias left to hardware default value suggested by Mark.
	- Updated commit log to reflect low power state for mbhc
	- cleaned up code spotted by Mark.
	- Moved the button voltage threshold to dt, suggested by Mark
	- Fixed key release issue reported by Damien

Srinivas Kandagatla (6):
  ASoC: jack: fix snd_soc_codec_set_jack return error
  ASoC: codecs: msm8916-wcd-analog: move codec reset to probe
  ASoC: codecs: msm8916-wcd-analog: get micbias voltage from dt
  ASoC: codecs: msm8916-wcd-analog: add MBHC support
  ASoC: qcom: apq8016-sbc: Add support to Headset JACK
  arm64: dts: apq8016-sbc: add mbhc buttons support

 .../bindings/sound/qcom,msm8916-wcd-analog.txt     |  18 +-
 arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi          |   2 +
 sound/soc/codecs/msm8916-wcd-analog.c              | 412 +++++++++++++++++++--
 sound/soc/qcom/apq8016_sbc.c                       |  34 ++
 sound/soc/soc-jack.c                               |   2 +-
 5 files changed, 444 insertions(+), 24 deletions(-)

-- 
2.9.3