lkml.org 
[lkml]   [2016]   [Sep]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH] ASoC: da7219: make sure the valid event when startup
Date
On 09 September 2016 15:02, Xing Zheng wrote:

> We need to ensure the master bias and jack detection to be enabled
> before reporting event at the da7219_aad_irq_thread. Otherwise, we
> may acquire the incorrect the unplug event when the DUT startup
> with a plugged headphone.

For this device, the master bias is enabled by default at power on and should
also be enabled in the move to bias_level STANDBY. This I believe should all
happen before the machine code calls the 'da7219_aad_jack_det()' function, and
you should certainly not see any IRQs until after you've made that call and
enabled accessory detection in the device.

I'm not really sure how this fixes anything.

>
> Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
> ---
>
> sound/soc/codecs/da7219-aad.c | 7 +++++++
> sound/soc/codecs/da7219-aad.h | 1 +
> 2 files changed, 8 insertions(+)
>
> diff --git a/sound/soc/codecs/da7219-aad.c b/sound/soc/codecs/da7219-aad.c
> index 4e369a1..cef17c0d 100644
> --- a/sound/soc/codecs/da7219-aad.c
> +++ b/sound/soc/codecs/da7219-aad.c
> @@ -38,6 +38,7 @@ void da7219_aad_jack_det(struct snd_soc_codec *codec,
> struct snd_soc_jack *jack)
>
> da7219->aad->jack = jack;
> da7219->aad->jack_inserted = false;
> + da7219->aad->accdet_en = false;
>
> /* Send an initial empty report */
> snd_soc_jack_report(jack, 0, DA7219_AAD_REPORT_ALL_MASK);
> @@ -46,6 +47,8 @@ void da7219_aad_jack_det(struct snd_soc_codec *codec,
> struct snd_soc_jack *jack)
> snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
> DA7219_ACCDET_EN_MASK,
> (jack ? DA7219_ACCDET_EN_MASK : 0));
> +
> + da7219->aad->accdet_en = true;
> }
> EXPORT_SYMBOL_GPL(da7219_aad_jack_det);
>
> @@ -293,6 +296,10 @@ static irqreturn_t da7219_aad_irq_thread(int irq, void
> *data)
> u8 statusa;
> int i, report = 0, mask = 0;
>
> + /* Ensure the master bias to be enabled */
> + if (!da7219_aad->accdet_en)
> + return IRQ_NONE;
> +
> /* Read current IRQ events */
> regmap_bulk_read(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
> events, DA7219_AAD_IRQ_REG_MAX);
> diff --git a/sound/soc/codecs/da7219-aad.h b/sound/soc/codecs/da7219-aad.h
> index 4fccf67..5641965 100644
> --- a/sound/soc/codecs/da7219-aad.h
> +++ b/sound/soc/codecs/da7219-aad.h
> @@ -200,6 +200,7 @@ struct da7219_aad_priv {
>
> struct snd_soc_jack *jack;
> bool jack_inserted;
> + bool accdet_en;
> };
>
> /* AAD control */
> --
> 1.9.1
>

\
 
 \ /
  Last update: 2016-09-17 09:59    [W:0.030 / U:0.448 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site