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ASoC: wm8994: Allow debounce before MICDET identification 

For systems which do not have a jack detection feature allow some debounce
to be specified before we perform accessory identification, improving
robustness without impacting button detection responsiveness.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2013-05-30 13:42:29 +01:00 committed by Mark Brown
parent 2d01e39b90
commit 2da1c4bf76
3 changed files with 40 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/linux/mfd/wm8994/pdata.h
View File

@ -182,6 +182,11 @@ struct wm8994_pdata {
*/
int micdet_delay;
/* Delay between microphone detect completing and reporting on
* insert (specified in ms)
*/
int mic_id_delay;
/* IRQ for microphone detection if brought out directly as a
* signal.
*/

35
sound/soc/codecs/wm8994.c
View File

@ -3660,6 +3660,8 @@ static irqreturn_t wm1811_jackdet_irq(int irq, void *data)
pm_runtime_get_sync(codec->dev);
cancel_delayed_work_sync(&wm8994->mic_complete_work);
mutex_lock(&wm8994->accdet_lock);
reg = snd_soc_read(codec, WM1811_JACKDET_CTRL);
@ -3842,11 +3844,33 @@ int wm8958_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack,
}
EXPORT_SYMBOL_GPL(wm8958_mic_detect);
static void wm8958_mic_work(struct work_struct *work)
{
struct wm8994_priv *wm8994 = container_of(work,
struct wm8994_priv,
mic_complete_work.work);
struct snd_soc_codec *codec = wm8994->hubs.codec;
dev_crit(codec->dev, "MIC WORK %x\n", wm8994->mic_status);
pm_runtime_get_sync(codec->dev);
mutex_lock(&wm8994->accdet_lock);
wm8994->mic_id_cb(wm8994->mic_id_cb_data, wm8994->mic_status);
mutex_unlock(&wm8994->accdet_lock);
pm_runtime_put(codec->dev);
dev_crit(codec->dev, "MIC WORK %x DONE\n", wm8994->mic_status);
}
static irqreturn_t wm8958_mic_irq(int irq, void *data)
{
struct wm8994_priv *wm8994 = data;
struct snd_soc_codec *codec = wm8994->hubs.codec;
int reg, count, ret;
int reg, count, ret, id_delay;
/*
* Jack detection may have detected a removal simulataneously
@ -3856,6 +3880,7 @@ static irqreturn_t wm8958_mic_irq(int irq, void *data)
if (!(snd_soc_read(codec, WM8958_MIC_DETECT_1) & WM8958_MICD_ENA))
return IRQ_HANDLED;
cancel_delayed_work_sync(&wm8994->mic_complete_work);
cancel_delayed_work_sync(&wm8994->open_circuit_work);
pm_runtime_get_sync(codec->dev);
@ -3904,8 +3929,12 @@ static irqreturn_t wm8958_mic_irq(int irq, void *data)
}
}
wm8994->mic_status = reg;
id_delay = wm8994->wm8994->pdata.mic_id_delay;
if (wm8994->mic_detecting)
wm8994->mic_id_cb(wm8994->mic_id_cb_data, reg);
schedule_delayed_work(&wm8994->mic_complete_work,
msecs_to_jiffies(id_delay));
else
wm8958_button_det(codec, reg);
@ -3971,6 +4000,8 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
break;
}
INIT_DELAYED_WORK(&wm8994->mic_complete_work, wm8958_mic_work);
for (i = 0; i < ARRAY_SIZE(wm8994->fll_locked); i++)
init_completion(&wm8994->fll_locked[i]);

2
sound/soc/codecs/wm8994.h
View File

@ -135,6 +135,8 @@ struct wm8994_priv {
struct wm8994_micdet micdet[2];
struct delayed_work mic_work;
struct delayed_work open_circuit_work;
struct delayed_work mic_complete_work;
u16 mic_status;
bool mic_detecting;
bool jack_mic;
int btn_mask;