The default WM8958 jack detection handler implements a full set of buttons and also support for video detection. Support for multi-button jacks is fairly system specific and will usually require some tuning for headsets so simplify the implementation to only report a simple short to ground button, leaving multi-button headsets to be handled by system specific code.
Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com --- sound/soc/codecs/wm8994.c | 38 ++++---------------------------------- 1 files changed, 4 insertions(+), 34 deletions(-)
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c index 5f16870..42e5ebe 100644 --- a/sound/soc/codecs/wm8994.c +++ b/sound/soc/codecs/wm8994.c @@ -102,8 +102,6 @@ struct wm8994_priv {
wm8958_micdet_cb jack_cb; void *jack_cb_data; - bool jack_is_mic; - bool jack_is_video; int micdet_irq;
int revision; @@ -2976,46 +2974,18 @@ static void wm8958_default_micdet(u16 status, void *data) int report = 0;
/* If nothing present then clear our statuses */ - if (!(status & WM8958_MICD_STS)) { - wm8994->jack_is_video = false; - wm8994->jack_is_mic = false; + if (!(status & WM8958_MICD_STS)) goto done; - } - - /* Assume anything over 475 ohms is a microphone and remember - * that we've seen one (since buttons override it) */ - if (status & 0x600) - wm8994->jack_is_mic = true; - if (wm8994->jack_is_mic) - report |= SND_JACK_MICROPHONE;
- /* Video has an impedence of approximately 75 ohms; assume - * this isn't used as a button and remember it since buttons - * override it. */ - if (status & 0x40) - wm8994->jack_is_video = true; - if (wm8994->jack_is_video) - report |= SND_JACK_VIDEOOUT; + report = SND_JACK_MICROPHONE;
/* Everything else is buttons; just assign slots */ - if (status & 0x4) + if (status & 0x1c0) report |= SND_JACK_BTN_0; - if (status & 0x8) - report |= SND_JACK_BTN_1; - if (status & 0x10) - report |= SND_JACK_BTN_2; - if (status & 0x20) - report |= SND_JACK_BTN_3; - if (status & 0x80) - report |= SND_JACK_BTN_4; - if (status & 0x100) - report |= SND_JACK_BTN_5;
done: snd_soc_jack_report(wm8994->micdet[0].jack, report, - SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2 | - SND_JACK_BTN_3 | SND_JACK_BTN_4 | SND_JACK_BTN_5 | - SND_JACK_MICROPHONE | SND_JACK_VIDEOOUT); + SND_JACK_BTN_0 | SND_JACK_MICROPHONE); }
/**