linux-kernel - [PATCH 0/5] ASoC: Map BTN_0 for Android Headsets to KEY

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Message-Id: <20171122205643.99783-1-bleung@chromium.org>
Date:   Wed, 22 Nov 2017 12:56:38 -0800
From:   Benson Leung <bleung@...omium.org>
To:     broonie@...nel.org, linux-kernel@...r.kernel.org
Cc:     harshapriya.n@...el.com, naveen.m@...el.com,
        srinivas.kandagatla@...aro.org, cychiang@...omium.org,
        dgreid@...omium.org, anatol.pomozov@...il.com, bleung@...omium.org,
        bleung@...gle.com
Subject: [PATCH 0/5] ASoC: Map BTN_0 for Android Headsets to KEY_PLAYPAUSE

The Android 3.5mm Headset jack specification mentions that BTN_0 should         
be mapped to KEY_MEDIA, but this is less logical than KEY_PLAYPAUSE,            
which has much broader userspace support.                                       

For example, the Chrome OS userspace now supports KEY_PLAYPAUSE to toggle       
play/pause of videos and audio, but does not handle KEY_MEDIA.                  

Furthermore, Android itself now supports KEY_PLAYPAUSE equivalently, as the     
new USB headset spec requires KEY_PLAYPAUSE for BTN_0.                          
https://source.android.com/devices/accessories/headset/usb-headset-spec

 [PATCH 1/5] ASoC: Intel: kbl_rt5663_rt5514_max98927: Map BTN_0 to
 [PATCH 2/5] ASoC: Intel: kbl_rt5663_max98927: Map BTN_0 to
 [PATCH 3/5] ASoC: ts3a227e: Map BTN_0 to KEY_PLAYPAUSE
 [PATCH 4/5] ASoC: rk3399_gru_sound: Map BTN_0 to KEY_PLAYPAUSE
 [PATCH 5/5] ASoC: qcom: apq8016-sbc: Map BTN_0 to KEY_PLAYPAUSE