linux-kernel - Re: [PATCH v8 3/3] ASoC: qcom: sc7180: Add machine driver for sound card registration

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Date:   Fri, 11 Sep 2020 15:05:41 +0800
From:   Tzung-Bi Shih <tzungbi@...gle.com>
To:     Cheng-Yi Chiang <cychiang@...omium.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Mark Brown <broonie@...nel.org>,
        Taniya Das <tdas@...eaurora.org>,
        Rohit kumar <rohitkr@...eaurora.org>,
        Banajit Goswami <bgoswami@...eaurora.org>,
        Patrick Lai <plai@...eaurora.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Srini Kandagatla <srinivas.kandagatla@...aro.org>,
        Stephan Gerhold <stephan@...hold.net>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Douglas Anderson <dianders@...omium.org>, dgreid@...omium.org,
        Tzung-Bi Shih <tzungbi@...omium.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        ALSA development <alsa-devel@...a-project.org>,
        linux-mediatek@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org,
        Ajit Pandey <ajitp@...eaurora.org>
Subject: Re: [PATCH v8 3/3] ASoC: qcom: sc7180: Add machine driver for sound
 card registration

On Thu, Sep 10, 2020 at 1:24 PM Cheng-Yi Chiang <cychiang@...omium.org> wrote:
> +struct sc7180_snd_data {
> +       u32 pri_mi2s_clk_count;
> +       struct snd_soc_jack hs_jack;
> +       struct device_node *hs_jack_of_node;
> +       struct snd_soc_jack hdmi_jack;
> +       struct device_node *hdmi_jack_of_node;
> +};
hs_jack_of_node and hdmi_jack_of_node are not using.  Remove them.

> +static int sc7180_init(struct snd_soc_pcm_runtime *rtd)
> +{
> +       struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
> +
> +       switch (cpu_dai->id) {
> +       case MI2S_PRIMARY:
> +               return sc7180_headset_init(rtd);
> +       case MI2S_SECONDARY:
> +               return 0;
> +       case HDMI:
I guess this enumeration has not merged yet?  It doesn't sound like a
specific-enough naming.

> +static int sc7180_snd_platform_probe(struct platform_device *pdev)
> +{
> +       struct snd_soc_card *card = &sc7180_card;
> +       struct sc7180_snd_data *data;
> +       struct device *dev = &pdev->dev;
> +       int ret;
> +
> +       /* Allocate the private data */
> +       data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
> +       if (!data)
> +               return -ENOMEM;
> +
> +       card->dev = dev;
> +
> +       ret = qcom_snd_parse_of(card);
> +       if (ret) {
> +               dev_err(dev, "Error parsing OF data\n");
> +               return ret;
> +       }
> +
> +       snd_soc_card_set_drvdata(card, data);
To be neat, move this line immediately before or after "card->dev = dev;".