On Wed, Jul 15, 2020 at 5:16 AM Nicolin Chen <nicoleotsuka@xxxxxxxxx> wrote:
>
> Hi Shengjiu,
>
> The whole series looks good to me. Just a couple of small
> questions inline:
>
> On Tue, Jul 14, 2020 at 05:05:36PM +0800, Shengjiu Wang wrote:
> > Use asoc_simple_init_jack function from simple card to implement
> > the Headphone and Microphone detection.
> > Register notifier to disable Speaker when Headphone is plugged in
> > and enable Speaker when Headphone is unplugged.
> > Register notifier to disable Digital Microphone when Analog Microphone
> > is plugged in and enable DMIC when Analog Microphone is unplugged.
> >
> > Signed-off-by: Shengjiu Wang <shengjiu.wang@xxxxxxx>
> > ---
> > sound/soc/fsl/Kconfig | 1 +
> > sound/soc/fsl/fsl-asoc-card.c | 69 ++++++++++++++++++++++++++++++++++-
> > 2 files changed, 68 insertions(+), 2 deletions(-)
>
> > static int fsl_asoc_card_late_probe(struct snd_soc_card *card)
> > {
> > struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card);
> > @@ -745,8 +789,29 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
> > snd_soc_card_set_drvdata(&priv->card, priv);
> >
> > ret = devm_snd_soc_register_card(&pdev->dev, &priv->card);
> > - if (ret && ret != -EPROBE_DEFER)
> > - dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
> > + if (ret) {
> > + if (ret != -EPROBE_DEFER)
> > + dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
>
> I think we may move this EPROBE_DEFER to the asrc_fail label.
If we move this to asrc_fail label, then it will be hard to define the
error message.
There are many places that goto asrc_fail.
>
> > + goto asrc_fail;
> > + }
> > +
> > + if (of_property_read_bool(np, "hp-det-gpio")) {
>
> Could we move this check inside asoc_simple_init_jack? There's no
> problem with doing it here though, yet I got a bit confused by it
> as I thought it's a boolean type property, which would be against
> the DT bindings until I saw asoc_simple_init_jack() uses the same
> string to get the GPIO. Just it probably would be a bit tricky as
> we need it to be optional here.
>
> Otherwise, I think we may add a line of comments to indicate that
> the API would use the same string to get the GPIO.
In asoc_simple_init_jack, gpio_is_valid() will be invalid when there is
no "hp-det-gpio" property, and asoc_simple_init_jack will return 0.
The reason why I add a check here is mostly for
snd_soc_jack_notifier_register().
when there is no jack created, there will be a kernel dump.
or I can use this code:
- if (of_property_read_bool(np, "hp-det-gpio")) {
- ret = asoc_simple_init_jack(&priv->card, &priv->hp_jack,
- 1, NULL, "Headphone Jack");
- if (ret)
- goto asrc_fail;
+ ret = asoc_simple_init_jack(&priv->card, &priv->hp_jack,
+ 1, NULL, "Headphone Jack");
+ if (ret)
+ goto asrc_fail;
+ if (priv->hp_jack.jack.jack)
snd_soc_jack_notifier_register(&priv->hp_jack.jack,
&hp_jack_nb);
- }
what do you think?
best regards
wang shengjiu
