Message-ID: <fb1aa025-5314-b4c4-25ed-1efbbacbdc3b@microchip.com>
Date:   Tue, 27 Jun 2023 04:43:52 +0000
From:   <Claudiu.Beznea@...rochip.com>
To:     <maso.huang@...iatek.com>, <lgirdwood@...il.com>,
        <broonie@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <matthias.bgg@...il.com>,
        <angelogioacchino.delregno@...labora.com>, <perex@...ex.cz>,
        <tiwai@...e.com>, <trevor.wu@...iatek.com>,
        <jiaxin.yu@...iatek.com>, <renzhijie2@...wei.com>,
        <allen-kh.cheng@...iatek.com>, <alsa-devel@...a-project.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH v2 4/7] ASoC: mediatek: mt7986: add platform driver

On 26.06.2023 05:34, Maso Huang wrote:
> +static int mt7986_afe_pcm_dev_probe(struct platform_device *pdev)
> +{
> +       struct mtk_base_afe *afe;
> +       struct mt7986_afe_private *afe_priv;
> +       struct device *dev;
> +       int i, irq_id, ret;
> +
> +       afe = devm_kzalloc(&pdev->dev, sizeof(*afe), GFP_KERNEL);
> +       if (!afe)
> +               return -ENOMEM;
> +       platform_set_drvdata(pdev, afe);
> +
> +       afe->platform_priv = devm_kzalloc(&pdev->dev, sizeof(*afe_priv),
> +                                         GFP_KERNEL);
> +       if (!afe->platform_priv)
> +               return -ENOMEM;
> +
> +       afe_priv = afe->platform_priv;
> +       afe->dev = &pdev->dev;
> +       dev = afe->dev;
> +
> +       afe->base_addr = devm_platform_ioremap_resource(pdev, 0);
> +       if (IS_ERR(afe->base_addr))
> +               return PTR_ERR(afe->base_addr);
> +
> +       /* initial audio related clock */
> +       ret = mt7986_init_clock(afe);
> +       if (ret)
> +               return dev_err_probe(dev, ret, "Cannot initialize clocks\n");
> +
> +       ret = devm_pm_runtime_enable(dev);
> +       if (ret)
> +               return ret;
> +
> +       /* enable clock for regcache get default value from hw */
> +       afe_priv->pm_runtime_bypass_reg_ctl = true;
> +       pm_runtime_get_sync(&pdev->dev);
> +
> +       afe->regmap = devm_regmap_init_mmio(&pdev->dev, afe->base_addr,
> +                     &mt7986_afe_regmap_config);
> +       if (IS_ERR(afe->regmap)) {
> +               ret = PTR_ERR(afe->regmap);
> +               goto err_pm_disable;
> +       }
> +
> +       pm_runtime_put_sync(&pdev->dev);

You already did here a put thus (see below)

> +       afe_priv->pm_runtime_bypass_reg_ctl = false;
> +
> +       /* init memif */
> +       afe->memif_size = MT7986_MEMIF_NUM;
> +       afe->memif = devm_kcalloc(dev, afe->memif_size, sizeof(*afe->memif),
> +                                 GFP_KERNEL);
> +       if (!afe->memif)
> +               goto err_pm_disable;
> +
> +       for (i = 0; i < afe->memif_size; i++) {
> +               afe->memif[i].data = &memif_data[i];
> +               afe->memif[i].irq_usage = -1;
> +       }
> +
> +       mutex_init(&afe->irq_alloc_lock);
> +
> +       /* irq initialize */
> +       afe->irqs_size = MT7986_IRQ_NUM;
> +       afe->irqs = devm_kcalloc(dev, afe->irqs_size, sizeof(*afe->irqs),
> +                                GFP_KERNEL);
> +       if (!afe->irqs)
> +               goto err_pm_disable;
> +
> +       for (i = 0; i < afe->irqs_size; i++)
> +               afe->irqs[i].irq_data = &irq_data[i];
> +
> +       /* request irq */
> +       irq_id = platform_get_irq(pdev, 0);
> +       if (irq_id < 0) {
> +               dev_err(dev, "%pOFn no irq found\n", dev->of_node);
> +               ret = irq_id;
> +               goto err_pm_disable;
> +       }
> +       ret = devm_request_irq(dev, irq_id, mt7986_afe_irq_handler,
> +                              IRQF_TRIGGER_NONE, "asys-isr", (void *)afe);
> +       if (ret) {
> +               dev_err(dev, "could not request_irq for asys-isr\n");
> +               goto err_pm_disable;
> +       }
> +
> +       /* init sub_dais */
> +       INIT_LIST_HEAD(&afe->sub_dais);
> +
> +       for (i = 0; i < ARRAY_SIZE(dai_register_cbs); i++) {
> +               ret = dai_register_cbs[i](afe);
> +               if (ret) {
> +                       dev_err(afe->dev, "dai register i %d fail, ret %d\n",
> +                                i, ret);
> +                       goto err_pm_disable;
> +               }
> +       }
> +
> +       /* init dai_driver and component_driver */
> +       ret = mtk_afe_combine_sub_dai(afe);
> +       if (ret) {
> +               dev_err(afe->dev, "mtk_afe_combine_sub_dai fail, ret %d\n",
> +                        ret);
> +               goto err_pm_disable;
> +       }
> +
> +       afe->mtk_afe_hardware = &mt7986_afe_hardware;
> +       afe->memif_fs = mt7986_memif_fs;
> +       afe->irq_fs = mt7986_irq_fs;
> +
> +       afe->runtime_resume = mt7986_afe_runtime_resume;
> +       afe->runtime_suspend = mt7986_afe_runtime_suspend;
> +
> +       /* register component */
> +       ret = devm_snd_soc_register_component(&pdev->dev,
> +                                             &mt7986_afe_component,
> +                                             NULL, 0);
> +       if (ret) {
> +               dev_warn(dev, "err_platform\n");
> +               goto err_pm_disable;
> +       }
> +
> +       ret = devm_snd_soc_register_component(afe->dev,
> +                                             &mt7986_afe_pcm_dai_component,
> +                                             afe->dai_drivers,
> +                                             afe->num_dai_drivers);
> +       if (ret) {
> +               dev_warn(dev, "err_dai_component\n");
> +               goto err_pm_disable;
> +       }
> +
> +       return ret;
> +
> +err_pm_disable:
> +       pm_runtime_put_sync(&pdev->dev);

these should be no need for this one here.

> +       pm_runtime_disable(&pdev->dev);

This is also covered by devm_pm_runtime_enable().

> +       return ret;
> +}

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