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ASoC: ts3a227e: Remap keys to match Android headset specification
authorAnatol Pomozov <anatol.pomozov@gmail.com>
Thu, 22 Jan 2015 23:47:16 +0000 (15:47 -0800)
committerMark Brown <broonie@kernel.org>
Tue, 27 Jan 2015 18:32:04 +0000 (18:32 +0000)
ts3a227e datasheet says typical key resistance is
  key1 50 Ohm
  key2 135 Ohm
  key3 240 Ohm
  key4 470 Ohm

The android headset specification expect buttons impedance:
  A (MEDIA) 0-70 Ohm
  D (VOICECOMMAND) 110-180 Ohm
  B (VOLUMEUP) 210-290 Ohm
  C (VOLUMEDOWN) 360-680 Ohm

Thus key mapping should be
  key1 - MEDIA
  key2 - VOICECOMMAND
  key3 - VOLUMEUP
  key3 - VOLUMEDOWN

Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Acked-by: Dylan Reid <dgreid@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
sound/soc/codecs/ts3a227e.c patch | blob | blame | history

diff --git a/sound/soc/codecs/ts3a227e.c b/sound/soc/codecs/ts3a227e.c
index 1d1205702d2324bcef0b41d9682a49549bc4f6e0..b55034f63de5fede2c62a537ff421d7a131747f3 100644 (file)
--- a/sound/soc/codecs/ts3a227e.c
+++ b/sound/soc/codecs/ts3a227e.c
@@ -221,9 +221,9 @@ int ts3a227e_enable_jack_detect(struct snd_soc_component *component,
        struct ts3a227e *ts3a227e = snd_soc_component_get_drvdata(component);
 
        snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_MEDIA);
-       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);
+       snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
+       snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
+       snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
 
        ts3a227e->jack = jack;
        ts3a227e_jack_report(ts3a227e);