linux-kernel - Re: [PATCH v2 2/2] ASoC: da7219: Convert driver to use generic device/fwnode functions

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Date:	Thu, 19 May 2016 16:27:31 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	Adam Thomson <Adam.Thomson.Opensource@...semi.com>,
	Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Robert Moore <robert.moore@...el.com>,
	Lv Zheng <lv.zheng@...el.com>,
	"Rafael J.Wysocki" <rafael.j.wysocki@...el.com>,
	Len Brown <lenb@...nel.org>
Cc:	alsa-devel@...a-project.org, linux-acpi@...r.kernel.org,
	devel@...ica.org, linux-kernel@...r.kernel.org,
	Support Opensource <support.opensource@...semi.com>,
	Sathyanarayana Nujella <sathyanarayana.nujella@...el.com>,
	Suthikulpanit@...semi.com, Suravee <Suravee.Suthikulpanit@....com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Hanjun Guo <hanjun.guo@...aro.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Subject: Re: [PATCH v2 2/2] ASoC: da7219: Convert driver to use generic
 device/fwnode functions

On Tue, 2016-05-17 at 11:28 +0100, Adam Thomson wrote:
> This change converts the driver from using the of_* functions to using
> the device_* and fwnode_* functions for accssing FW related data.
> 
> Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@...semi.com>
> Tested-by: Sathyanarayana Nujella <sathyanarayana.nujella@...el.com>

@@ -538,97 +538,96 @@ static enum da7219_aad_adc_1bit_rpt
>  	}
>  }
> 
> -static struct da7219_aad_pdata *da7219_aad_of_to_pdata(struct
> snd_soc_codec *codec)
> +static struct da7219_aad_pdata *da7219_aad_fw_to_pdata(struct
> snd_soc_codec *codec)
>  {
> -	struct device_node *np = codec->dev->of_node;
> -	struct device_node *aad_np = of_find_node_by_name(np,
> "da7219_aad");
> +	struct device *dev = codec->dev;
> +	struct i2c_client *i2c = to_i2c_client(dev);
> +	struct fwnode_handle *aad_np =
> +		device_get_named_child_node(dev, "da7219_aad");

I would suggest to do an assignment below...

>  	struct da7219_aad_pdata *aad_pdata;
> -	const char *of_str;
> -	u32 of_val32;
> +	const char *fw_str;
> +	u32 fw_val32;
> 


...right here.
Same amount of LOC, but less difficult to see from where aad_np comes.

>  	if (!aad_np)
>  		return NULL;
> 

> @@ -769,9 +768,9 @@ int da7219_aad_init(struct snd_soc_codec *codec)
>  	da7219->aad = da7219_aad;
>  	da7219_aad->codec = codec;
> 
> -	/* Handle any DT/platform data */
> -	if ((codec->dev->of_node) && (da7219->pdata))
> -		da7219->pdata->aad_pdata =
> da7219_aad_of_to_pdata(codec);
> +	/* Handle any DT/ACPI/platform data */
> +     if ((da7219->pdata) && (!da7219->pdata->aad_pdata))

Redundant parens, twice.

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy