On Wed, Jul 15, 2020 at 12:14:01PM +0800, Shengjiu Wang wrote:
On Wed, Jul 15, 2020 at 5:16 AM Nicolin Chen nicoleotsuka@gmail.com 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@nxp.com
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.
Oh...good point...
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,
It's pretty clean but not very obvious for the "optional" part. So I think that it'd be slightly better to go for your previous solution, but with a line of comments to show: these properties are optional and asoc_simple_init_jack() uses the same strings.
Please add to all three changes once the comments being added:
Acked-by: Nicolin Chen nicoleotsuka@gmail.com
Thanks