linux-kernel - Re: [PATCH v2 3/3] ASoC: rk3399_gru_sound: Wire up DP jack detection

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Date:   Mon, 17 Jan 2022 17:01:52 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     Brian Norris <briannorris@...omium.org>
Cc:     Heiko Stuebner <heiko@...ech.de>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        linux-rockchip@...ts.infradead.org, Lin Huang <hl@...k-chips.com>,
        linux-arm-kernel@...ts.infradead.org,
        dri-devel@...ts.freedesktop.org, Rob Herring <robh+dt@...nel.org>,
        Sandy Huang <hjc@...k-chips.com>, linux-kernel@...r.kernel.org,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v2 3/3] ASoC: rk3399_gru_sound: Wire up DP jack detection

Hi,

On Sat, Jan 15, 2022 at 7:03 AM Brian Norris <briannorris@...omium.org> wrote:
>
> Now that the cdn-dp driver supports plug-change callbacks, let's wire it
> up.
>
> Signed-off-by: Brian Norris <briannorris@...omium.org>
> ---
>
> (no changes since v1)
>
>  sound/soc/rockchip/rk3399_gru_sound.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
>
> diff --git a/sound/soc/rockchip/rk3399_gru_sound.c b/sound/soc/rockchip/rk3399_gru_sound.c
> index e2d52d8d0ff9..eeef3ed70037 100644
> --- a/sound/soc/rockchip/rk3399_gru_sound.c
> +++ b/sound/soc/rockchip/rk3399_gru_sound.c
> @@ -164,6 +164,25 @@ static int rockchip_sound_da7219_hw_params(struct snd_pcm_substream *substream,
>         return 0;
>  }
>
> +static struct snd_soc_jack cdn_dp_card_jack;
> +
> +static int rockchip_sound_cdndp_init(struct snd_soc_pcm_runtime *rtd)
> +{
> +       struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;

Using snd_soc_card_get_codec_dai() might be a better choice throughout this
driver. While it will work for the cdn_dp case, because it is the first DAI
in |rockchip_dais[]|, all the invocations for the other codecs are likely
returning the wrong DAI.

For this particular patch it works either way, so

Reviewed-by: Chen-Yu Tsai <wenst@...omium.org>

> +       struct snd_soc_card *card = rtd->card;
> +       int ret;
> +
> +       /* Enable jack detection. */
> +       ret = snd_soc_card_jack_new(card, "DP Jack", SND_JACK_LINEOUT,
> +                                   &cdn_dp_card_jack, NULL, 0);
> +       if (ret) {
> +               dev_err(card->dev, "Can't create DP Jack %d\n", ret);
> +               return ret;
> +       }
> +
> +       return snd_soc_component_set_jack(component, &cdn_dp_card_jack, NULL);
> +}
> +
>  static int rockchip_sound_da7219_init(struct snd_soc_pcm_runtime *rtd)
>  {
>         struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
> @@ -315,6 +334,7 @@ static const struct snd_soc_dai_link rockchip_dais[] = {
>         [DAILINK_CDNDP] = {
>                 .name = "DP",
>                 .stream_name = "DP PCM",
> +               .init = rockchip_sound_cdndp_init,
>                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
>                         SND_SOC_DAIFMT_CBS_CFS,
>                 SND_SOC_DAILINK_REG(cdndp),
> --
> 2.34.1.703.g22d0c6ccf7-goog
>
>
> _______________________________________________
> Linux-rockchip mailing list
> Linux-rockchip@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-rockchip

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