linux-kernel - Re: [PATCH v4 14/15] ASoC: rockchip/rockchip-hdmi-audio: add sound driver for hdmi audio

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Date:	Fri, 27 Mar 2015 09:16:17 +0800
From:	yakir <ykk@...k-chips.com>
To:	Mark Brown <broonie@...nel.org>
CC:	Liam Girdwood <lgirdwood@...il.com>, djkurtz@...omium.org,
	dianders@...omium.org, linux-rockchip@...ts.infradead.org,
	David Airlie <airlied@...ux.ie>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Andy Yan <andy.yan@...k-chips.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Fabio Estevam <fabio.estevam@...escale.com>,
	dri-devel@...ts.freedesktop.org, Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.de>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Brian Austin <brian.austin@...rus.com>,
	Bard Liao <bardliao@...ltek.com>,
	Oder Chiou <oder_chiou@...ltek.com>,
	Max Filippov <jcmvbkbc@...il.com>,
	Axel Lin <axel.lin@...ics.com>, Arnd Bergmann <arnd@...db.de>,
	Jyri Sarha <jsarha@...com>, Sean Cross <xobs@...agi.com>,
	Ben Zhang <benzh@...omium.org>, linux-kernel@...r.kernel.org,
	alsa-devel@...a-project.org, mmind00@...glemail.com,
	marcheu@...omium.org, mark.yao@...k-chips.com
Subject: Re: [PATCH v4 14/15] ASoC: rockchip/rockchip-hdmi-audio: add sound
 driver for hdmi audio

Hi Mark,

On 2015年03月27日 02:16, Mark Brown wrote:
> On Sat, Feb 28, 2015 at 10:04:30PM -0500, Yakir Yang wrote:
>
>> +	ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
>> +	if (ret < 0) {
>> +		dev_err(cpu_dai->dev, "failed to set cpu_dai fmt.\n");
>> +		return ret;
>> +	}
> You've already set this in the dai_link, no need to do it again.

Okay, correct it in next v5.


> +	dev_info(&pdev->dev, "hdmi audio init success.\n");
> Please remove noisy prints like this.

Okay, turn it to dev_debug(...)

>> +free_cpu_of_node:
>> +	hdmi_audio_dai.cpu_of_node = NULL;
>> +	hdmi_audio_dai.platform_of_node = NULL;
>> +free_priv_data:
>> +	snd_soc_card_set_drvdata(card, NULL);
>> +	platform_set_drvdata(pdev, NULL);
>> +	card->dev = NULL;
> If any of these assignments is doing anything there's a problem with the
> code.
>
Yes, when probe failed, program will goto this code.
>> +{
>> +	struct snd_soc_card *card = platform_get_drvdata(pdev);
>> +
>> +	snd_soc_unregister_card(card);
> devm_snd_soc_register_card() and you can remove this function entirely.
do you mean that when I take devm_snd_soc_register_card() to register card,
then I do not need unregister card any more(destroy with device) ?
>
>> +static const struct of_device_id rockchip_hdmi_audio_of_match[] = {
>> +	{ .compatible = "rockchip,rk3288-hdmi-audio", },
>> +	{},
>> +};
> There is no documentation for this binding, binding documentation is
> mandatory.  Based on the compatible string this looks like it's specific
> to the SoC rather than a design for a board - is the whole card part of
> the SoC?
It's my fault, cause the dts patch have not CC you, I will correct it in 
next v5

Thanks :)
Yakir

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