Hi Danny,

On Tue, Aug 30, 2016 at 07:44:02AM +0200, Danny Milosavljevic wrote:
> This distinguishes sun4i from sun7i. It is necessary because they use
> different registers for the audio mixer.

Your Signed-off-by is missing

> ---
>  sound/soc/sunxi/sun4i-codec.c | 44 +++++++++++++++++++++++++++++++++----------
>  1 file changed, 34 insertions(+), 10 deletions(-)
> 
> diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c
> index 0e19c50..30f4ea2 100644
> --- a/sound/soc/sunxi/sun4i-codec.c
> +++ b/sound/soc/sunxi/sun4i-codec.c
> @@ -96,8 +96,9 @@
>  /* Other various ADC registers */
>  #define SUN4I_CODEC_DAC_TXCNT			(0x30)
>  #define SUN4I_CODEC_ADC_RXCNT			(0x34)
> -#define SUN4I_CODEC_AC_SYS_VERI			(0x38)
> -#define SUN4I_CODEC_AC_MIC_PHONE_CAL		(0x3c)
> +
> +#define SUN7I_CODEC_AC_DAC_CAL			(0x38)
> +#define SUN7I_CODEC_AC_MIC_PHONE_CAL		(0x3c)

That will need at least some mention in the commit log.

>  
>  struct sun4i_codec {
>  	struct device	*dev;
> @@ -509,10 +510,17 @@ static const struct snd_kcontrol_new sun4i_codec_pa_mute =
>  
>  static DECLARE_TLV_DB_SCALE(sun4i_codec_pa_volume_scale, -6300, 100, 1);
>  
> -static const struct snd_kcontrol_new sun4i_codec_widgets[] = {
> -	SOC_SINGLE_TLV("Power Amplifier Volume", SUN4I_CODEC_DAC_ACTL,
> -		       SUN4I_CODEC_DAC_ACTL_PA_VOL, 0x3F, 0,
> -		       sun4i_codec_pa_volume_scale),
> +#define SUN4I_COMMON_CODEC_CONTROLS \
> +	SOC_SINGLE_TLV("Power Amplifier Volume", SUN4I_CODEC_DAC_ACTL,\
> +		       SUN4I_CODEC_DAC_ACTL_PA_VOL, 0x3F, 0,\
> +		       sun4i_codec_pa_volume_scale)
> +
> +static const struct snd_kcontrol_new sun4i_codec_controls[] = {
> +	SUN4I_COMMON_CODEC_CONTROLS,
> +};
> +
> +static const struct snd_kcontrol_new sun7i_codec_controls[] = {
> +	SUN4I_COMMON_CODEC_CONTROLS,
>  };
>  
>  static const struct snd_kcontrol_new sun4i_codec_left_mixer_controls[] = {
> @@ -629,8 +637,18 @@ static const struct snd_soc_dapm_route sun4i_codec_codec_dapm_routes[] = {
>  
>  static struct snd_soc_codec_driver sun4i_codec_codec = {
>  	.component_driver = {
> -		.controls		= sun4i_codec_widgets,
> -		.num_controls		= ARRAY_SIZE(sun4i_codec_widgets),
> +		.controls		= sun4i_codec_controls,
> +		.num_controls		= ARRAY_SIZE(sun4i_codec_controls),
> +		.dapm_widgets           = sun4i_codec_codec_dapm_widgets,
> +		.num_dapm_widgets       = ARRAY_SIZE(sun4i_codec_codec_dapm_widgets),
> +		.dapm_routes            = sun4i_codec_codec_dapm_routes,
> +		.num_dapm_routes        = ARRAY_SIZE(sun4i_codec_codec_dapm_routes),
> +	},
> +};

You need a new line here.

> +static struct snd_soc_codec_driver sun7i_codec_codec = {
> +	.component_driver = {
> +		.controls               = sun7i_codec_controls,
> +		.num_controls           = ARRAY_SIZE(sun7i_codec_controls),
>  		.dapm_widgets		= sun4i_codec_codec_dapm_widgets,
>  		.num_dapm_widgets	= ARRAY_SIZE(sun4i_codec_codec_dapm_widgets),
>  		.dapm_routes		= sun4i_codec_codec_dapm_routes,
> @@ -682,7 +700,7 @@ static const struct regmap_config sun4i_codec_regmap_config = {
>  	.reg_bits	= 32,
>  	.reg_stride	= 4,
>  	.val_bits	= 32,
> -	.max_register	= SUN4I_CODEC_AC_MIC_PHONE_CAL,
> +	.max_register	= SUN7I_CODEC_AC_MIC_PHONE_CAL,
>  };
>  
>  static const struct of_device_id sun4i_codec_of_match[] = {
> @@ -760,6 +778,7 @@ static int sun4i_codec_probe(struct platform_device *pdev)
>  {
>  	struct snd_soc_card *card;
>  	struct sun4i_codec *scodec;
> +	struct snd_soc_codec_driver *codec;
>  	struct resource *res;
>  	void __iomem *base;
>  	int ret;
> @@ -822,7 +841,12 @@ static int sun4i_codec_probe(struct platform_device *pdev)
>  	scodec->capture_dma_data.maxburst = 4;
>  	scodec->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
>  
> -	ret = snd_soc_register_codec(&pdev->dev, &sun4i_codec_codec,
> +	if (of_device_is_compatible(pdev->dev.of_node,
> +				    "allwinner,sun7i-a20-codec"))
> +		codec = &sun7i_codec_codec;
> +	else
> +		codec = &sun4i_codec_codec;

It would be better to add a structure assiocated to the data field of
of_device_id. That way, you'll also be able to have any quirks without
adding more checks (such as a different regmap config, like Chen-Yu
suggested).

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com