Re: [linux-sunxi] [PATCH v2] ASoC: sun4i-codec: Distinguish sun4i from sun7i
From: Chen-Yu Tsai
Date: Fri Sep 09 2016 - 09:56:50 EST
Hi,
On Fri, Sep 9, 2016 at 3:57 AM, Danny Milosavljevic
<dannym@xxxxxxxxxxxxxxx> wrote:
> Introduce mechanism to detect sun7i and provide a different regmap
> and different controls for it - different compared to sun4i Allwinner A10.
>
> The controls will be extended in a forthcoming patch - it is necessary to
> distinguish between sun4i and sun7i controls because the mic gains are in
> different registers.
>
> Renamed SUN4I_CODEC_AC_SYS_VERI to SUN7I_CODEC_AC_DAC_CAL and renamed
> SUN4I_CODEC_AC_MIC_PHONE_CAL to SUN7I_CODEC_AC_MIC_PHONE_CAL because these
> are actually not present on Allwinner A10.
>
> Handle quirks by regmap config and codec and select the correct quirks
> automatically.
>
> Signed-off-by: Danny Milosavljevic <dannym@xxxxxxxxxxxxxxx>
> ---
> sound/soc/sunxi/sun4i-codec.c | 78 ++++++++++++++++++++++++++++++++-----------
> 1 file changed, 58 insertions(+), 20 deletions(-)
>
> diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c
> index 0e19c50..239e330 100644
> --- a/sound/soc/sunxi/sun4i-codec.c
> +++ b/sound/soc/sunxi/sun4i-codec.c
> @@ -96,8 +96,8 @@
> /* 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)
>
> struct sun4i_codec {
> struct device *dev;
> @@ -509,7 +509,7 @@ 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[] = {
> +static const struct snd_kcontrol_new sun4i_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),
> @@ -627,10 +627,60 @@ static const struct snd_soc_dapm_route sun4i_codec_codec_dapm_routes[] = {
> { "Mic1", NULL, "VMIC" },
> };
>
> +static const struct regmap_config sun4i_codec_regmap_config = {
> + .reg_bits = 32,
> + .reg_stride = 4,
> + .val_bits = 32,
> + .max_register = SUN4I_CODEC_ADC_RXCNT,
> +};
> +
> +static const struct regmap_config sun7i_codec_regmap_config = {
> + .reg_bits = 32,
> + .reg_stride = 4,
> + .val_bits = 32,
> + .max_register = SUN7I_CODEC_AC_MIC_PHONE_CAL,
> +};
> +
> +struct sun4i_quirks {
Nit: use the driver name, sun4i_codec, as the prefix.
> + const struct snd_kcontrol_new *controls;
> + unsigned int num_controls;
> + const struct regmap_config *regmap_config;
> +};
> +
> +static const struct sun4i_quirks sun4i_quirks = {
> + .controls = NULL,
> + .num_controls = 0U,
Nit: they default to NULL/0. You don't need to do it.
> + .regmap_config = &sun4i_codec_regmap_config,
> +};
> +
> +static const struct sun4i_quirks sun7i_quirks = {
> + .controls = NULL,
> + .num_controls = 0U,
> + .regmap_config = &sun7i_codec_regmap_config,
> +};
> +
> +static const struct of_device_id sun4i_codec_of_match[] = {
> + { .compatible = "allwinner,sun4i-a10-codec", .data = &sun4i_quirks },
> + { .compatible = "allwinner,sun7i-a20-codec", .data = &sun7i_quirks },
> + {}
> +};
> +MODULE_DEVICE_TABLE(of, sun4i_codec_of_match);
Nit: I would put the above at the very bottom, just above the platform driver
probe function, or where it was originally. Keep the file organized into
codec/card/platform driver sections.
ChenYu
> +
> +static int sun4i_codec_codec_probe(struct snd_soc_codec *scodec)
> +{
> + const struct sun4i_quirks *quirks;
> +
> + quirks = of_device_get_match_data(scodec->dev);
> + return snd_soc_add_codec_controls(scodec,
> + quirks->controls,
> + quirks->num_controls);
> +}
> +
> static struct snd_soc_codec_driver sun4i_codec_codec = {
> + .probe = sun4i_codec_codec_probe,
> .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,
> @@ -678,20 +728,6 @@ static struct snd_soc_dai_driver dummy_cpu_dai = {
> },
> };
>
> -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,
> -};
> -
> -static const struct of_device_id sun4i_codec_of_match[] = {
> - { .compatible = "allwinner,sun4i-a10-codec" },
> - { .compatible = "allwinner,sun7i-a20-codec" },
> - {}
> -};
> -MODULE_DEVICE_TABLE(of, sun4i_codec_of_match);
> -
> static struct snd_soc_dai_link *sun4i_codec_create_link(struct device *dev,
> int *num_links)
> {
> @@ -760,6 +796,7 @@ static int sun4i_codec_probe(struct platform_device *pdev)
> {
> struct snd_soc_card *card;
> struct sun4i_codec *scodec;
> + const struct sun4i_quirks *quirks;
> struct resource *res;
> void __iomem *base;
> int ret;
> @@ -777,8 +814,9 @@ static int sun4i_codec_probe(struct platform_device *pdev)
> return PTR_ERR(base);
> }
>
> + quirks = of_device_get_match_data(&pdev->dev);
> scodec->regmap = devm_regmap_init_mmio(&pdev->dev, base,
> - &sun4i_codec_regmap_config);
> + quirks->regmap_config);
> if (IS_ERR(scodec->regmap)) {
> dev_err(&pdev->dev, "Failed to create our regmap\n");
> return PTR_ERR(scodec->regmap);
> --
> 2.1.4
>
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