[alsa-devel] [PATCH] ASoC: Intel: kbl_da7219_max98357a: Map BTN_0 to KEY_PLAYPAUSE

[Naveen M]

On Thu, Jun 28, 2018 at 10:46:58PM -0700, Pierre-Louis Bossart wrote:
> On 6/27/18 11:11 PM, mac.chiang at intel.com wrote:
> >From: Mac Chiang <mac.chiang at intel.com>
> >
> >On kbl_rt5663_max98927, commit 38a5882e4292
> >     ("ASoC: Intel: kbl_rt5663_max98927: Map BTN_0 to KEY_PLAYPAUSE")
> >     This key pair mapping to play/pause when playing Youtube
> >
> >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
> >
> >The same fix is required on Chrome kbl_da7219_max98357a.
> >
> >Signed-off-by: Mac Chiang <mac.chiang at intel.com>
> 
> Acked-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
> 
> this is aligned with a recent patch for the same headset for an AMD
> platform. We'd need the same fix for the bxt_da7219 machine driver btw.
> Naveen, is this something you can look into? Thanks!
> 
> 
Agreed Pierre, earlier I have submitted a patch on this for bxt_da7219 - 
https://patchwork.kernel.org/patch/10335295/
Also I have updated the same for recently ack'd glk_rt5682_max machine.
> >---
> >  sound/soc/intel/boards/kbl_da7219_max98357a.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> >diff --git a/sound/soc/intel/boards/kbl_da7219_max98357a.c b/sound/soc/intel/boards/kbl_da7219_max98357a.c
> >index 7961f1f..edafe23 100644
> >--- a/sound/soc/intel/boards/kbl_da7219_max98357a.c
> >+++ b/sound/soc/intel/boards/kbl_da7219_max98357a.c
> >@@ -188,7 +188,7 @@ static int kabylake_da7219_codec_init(struct snd_soc_pcm_runtime *rtd)
> >  	jack = &ctx->kabylake_headset;
> >-	snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_MEDIA);
> >+	snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
> >  	snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOLUMEUP);
> >  	snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
> >  	snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);
> >
> 

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