On Thu, 03 Dec 2015 11:45:50 +0100,
Adam Thomson wrote:
>
> This patch adds support to the codec driver to handle mic level
> detect related IRQs, and report these to user-space using a uevent
> variable.
Is the uevent the best way for this?
thanks,
Takashi
>
> Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@xxxxxxxxxxx>
> ---
> sound/soc/codecs/da7218.c | 19 ++++++++++++++-----
> 1 file changed, 14 insertions(+), 5 deletions(-)
>
> diff --git a/sound/soc/codecs/da7218.c b/sound/soc/codecs/da7218.c
> index 4fee7ae..752ed04 100644
> --- a/sound/soc/codecs/da7218.c
> +++ b/sound/soc/codecs/da7218.c
> @@ -2202,6 +2202,16 @@ int da7218_hpldet(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
> }
> EXPORT_SYMBOL_GPL(da7218_hpldet);
>
> +static void da7218_micldet_irq(struct snd_soc_codec *codec)
> +{
> + char *envp[] = {
> + "EVENT=MIC_LEVEL_DETECT",
> + NULL,
> + };
> +
> + kobject_uevent_env(&codec->dev->kobj, KOBJ_CHANGE, envp);
> +}
> +
> static void da7218_hpldet_irq(struct snd_soc_codec *codec)
> {
> struct da7218_priv *da7218 = snd_soc_codec_get_drvdata(codec);
> @@ -2232,6 +2242,10 @@ static irqreturn_t da7218_irq_thread(int irq, void *data)
> if (!status)
> return IRQ_NONE;
>
> + /* Mic level detect */
> + if (status & DA7218_LVL_DET_EVENT_MASK)
> + da7218_micldet_irq(codec);
> +
> /* HP detect */
> if (status & DA7218_HPLDET_JACK_EVENT_MASK)
> da7218_hpldet_irq(codec);
> @@ -2936,11 +2950,6 @@ static int da7218_probe(struct snd_soc_codec *codec)
> }
>
> if (da7218->irq) {
> - /* Mask off mic level events, currently not handled */
> - snd_soc_update_bits(codec, DA7218_EVENT_MASK,
> - DA7218_LVL_DET_EVENT_MSK_MASK,
> - DA7218_LVL_DET_EVENT_MSK_MASK);
> -
> ret = devm_request_threaded_irq(codec->dev, da7218->irq, NULL,
> da7218_irq_thread,
> IRQF_TRIGGER_LOW | IRQF_ONESHOT,
> --
> 1.9.3
>
>
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