Re: [RESEND PATCH v2 14/15] ASoC: qcom: apq8096: Add db820c machine driver

[Srinivas Kandagatla]

Thanks for the review comments.


On 03/01/18 00:16, Bjorn Andersson wrote:
> On Thu 14 Dec 09:34 PST 2017, srinivas.kandagatla@xxxxxxxxxx wrote:
>
> > From: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
> >
> > uThis patch adds support to DB820c machine driver.
>
> Drop 'u' and expand the message to claim that this is the machine driver
> for 8996, used by the db820c.
>
> [..]
> > +static struct snd_soc_dai_link msm8996_dai_links[] = {
>
> Are there any differences between the DAI links of apq8096 and msm8996?
This driver is more of board specific,
Am not 100% sure about msm8996, on apq8096 in particularly on db820c we 
got hdmi and analog audio connected via slimbus and also I2S on lowspeed 
connector.

> > +	/* FrontEnd DAI Links */
> > +	{
> > +		.name		= "MultiMedia1 Playback",
> > +		.stream_name	= "MultiMedia1",
> > +		.cpu_dai_name	= "MM_DL1",
> > +		.platform_name	= "q6asm_dai",
> > +		.dynamic	= 1,
> > +		.dpcm_playback	= 1,
> > +
> > +		.codec_dai_name	= "snd-soc-dummy-dai",
> > +		.codec_name = "snd-soc-dummy",
> > +	},
> > +	/* Backend DAI Links */
> > +	{
> > +		.name		= "HDMI Playback",
> > +		.stream_name	= "q6afe_dai",
> > +		.cpu_dai_name	= "HDMI",
> > +		.platform_name	= "q6routing",
> > +		.no_pcm		= 1,
> > +		.dpcm_playback	= 1,
> > +		.be_hw_params_fixup = msm8996_be_hw_params_fixup,
> > +		.codec_dai_name	= "i2s-hifi",
> > +		.codec_name = "hdmi-audio-codec.0.auto",
> > +	},
> > +};
> > +
> > +static int apq8096_sbc_parse_of(struct snd_soc_card *card)
>
> msm8996_parse_of()

sure if it helps.

> > +{
> > +	struct device *dev = card->dev;
> > +	int ret;
> > +
> > +	ret = snd_soc_of_parse_card_name(card, "qcom,model");
> > +	if (ret)
> > +		dev_err(dev, "Error parsing card name: %d\n", ret);
> > +
> > +	return ret;
> > +}
> > +
> > +static int msm_snd_apq8096_probe(struct platform_device *pdev)
>
> msm_snd_msm8996_probe()?
sure
> > +{
> > +	int ret;
> > +	struct snd_soc_card *card;
> > +
> > +	card = devm_kzalloc(&pdev->dev, sizeof(*card), GFP_KERNEL);
> > +	if (!card)
> > +		return -ENOMEM;
> > +
> > +	card->dev = &pdev->dev;
> > +
> > +	ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
> > +	if (ret)
> > +		return ret;
> > +
> > +	card->dai_link = msm8996_dai_links;
> > +	card->num_links	= ARRAY_SIZE(msm8996_dai_links);
> > +
> > +	ret = apq8096_sbc_parse_of(card);
> > +	if (ret) {
> > +		dev_err(&pdev->dev, "Error parsing OF data\n");
>
> No need to print in both parse_of() and here.
yep.

> > +		return ret;
> > +	}
> > +
> > +	ret = devm_snd_soc_register_card(&pdev->dev, card);
> > +	if (ret)
> > +		dev_err(&pdev->dev, "sound card register failed (%d)!\n", ret);
> > +	else
> > +		dev_err(&pdev->dev, "sound card register Sucessfull\n");
>
> This isn't an error, skip the print here.
yep.

> > +
> > +	return ret;
> > +}
> > +
> > +static const struct of_device_id msm_snd_apq8096_dt_match[] = {
> > +	{.compatible = "qcom,apq8096-sndcard"},
> > +	{}
> > +};
> > +
> > +static struct platform_driver msm_snd_apq8096_driver = {
> > +	.probe  = msm_snd_apq8096_probe,
> > +	.driver = {
> > +		.name = "msm-snd-apq8096",
> > +		.owner = THIS_MODULE,
>
> Drop the .owner
yep
> Regards,
> Bjorn