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References: <20230410184526.15990-1-blarson@amd.com> <20230410184526.15990-13-blarson@amd.com>
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From:   Ulf Hansson <ulf.hansson@linaro.org>
Date:   Mon, 17 Apr 2023 16:54:15 +0200
Message-ID: <CAPDyKFrJULviF7+LJZmC89AfyKrcPFtthPY2fb9a=9aqpJcCEA@mail.gmail.com>
Subject: Re: [PATCH v13 12/15] mmc: sdhci-cadence: Support device specific
 init during probe
To:     Brad Larson <blarson@amd.com>
Cc:     linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-mmc@vger.kernel.org, linux-spi@vger.kernel.org,
        adrian.hunter@intel.com, alcooperx@gmail.com,
        andy.shevchenko@gmail.com, arnd@arndb.de,
        brendan.higgins@linux.dev, briannorris@chromium.org,
        brijeshkumar.singh@amd.com, catalin.marinas@arm.com,
        davidgow@google.com, gsomlo@gmail.com, gerg@linux-m68k.org,
        krzk@kernel.org, krzysztof.kozlowski+dt@linaro.org, lee@kernel.org,
        lee.jones@linaro.org, broonie@kernel.org,
        yamada.masahiro@socionext.com, p.zabel@pengutronix.de,
        piotrs@cadence.com, p.yadav@ti.com, rdunlap@infradead.org,
        robh+dt@kernel.org, samuel@sholland.org, fancer.lancer@gmail.com,
        skhan@linuxfoundation.org, suravee.suthikulpanit@amd.com,
        thomas.lendacky@amd.com, tonyhuang.sunplus@gmail.com,
        vaishnav.a@ti.com, will@kernel.org, devicetree@vger.kernel.org
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Precedence: bulk

On Mon, 10 Apr 2023 at 20:47, Brad Larson <blarson@amd.com> wrote:
>
> Move struct sdhci_pltfm_data under new struct sdhci_cdns_drv_data.
> Add an init() into sdhci_cdns_drv_data for platform specific device
> initialization in the device probe which is not used for existing devices.
>
> Signed-off-by: Brad Larson <blarson@amd.com>
> Acked-by: Adrian Hunter <adrian.hunter@intel.com>

Applied for next, thanks!

Kind regards
Uffe


> ---
>
> v10 changes:
> - New patch to provide for platform specific init() with no change
>   to existing designs.
>
> ---
>  drivers/mmc/host/sdhci-cadence.c | 32 +++++++++++++++++++++++---------
>  1 file changed, 23 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-cadence.c b/drivers/mmc/host/sdhci-cadence.c
> index 708d4297f241..c528a25f48b8 100644
> --- a/drivers/mmc/host/sdhci-cadence.c
> +++ b/drivers/mmc/host/sdhci-cadence.c
> @@ -77,6 +77,11 @@ struct sdhci_cdns_phy_cfg {
>         u8 addr;
>  };
>
> +struct sdhci_cdns_drv_data {
> +       int (*init)(struct platform_device *pdev);
> +       const struct sdhci_pltfm_data pltfm_data;
> +};
> +
>  static const struct sdhci_cdns_phy_cfg sdhci_cdns_phy_cfgs[] = {
>         { "cdns,phy-input-delay-sd-highspeed", SDHCI_CDNS_PHY_DLY_SD_HS, },
>         { "cdns,phy-input-delay-legacy", SDHCI_CDNS_PHY_DLY_SD_DEFAULT, },
> @@ -325,13 +330,17 @@ static const struct sdhci_ops sdhci_cdns_ops = {
>         .set_uhs_signaling = sdhci_cdns_set_uhs_signaling,
>  };
>
> -static const struct sdhci_pltfm_data sdhci_cdns_uniphier_pltfm_data = {
> -       .ops = &sdhci_cdns_ops,
> -       .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
> +static const struct sdhci_cdns_drv_data sdhci_cdns_uniphier_drv_data = {
> +       .pltfm_data = {
> +               .ops = &sdhci_cdns_ops,
> +               .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
> +       },
>  };
>
> -static const struct sdhci_pltfm_data sdhci_cdns_pltfm_data = {
> -       .ops = &sdhci_cdns_ops,
> +static const struct sdhci_cdns_drv_data sdhci_cdns_drv_data = {
> +       .pltfm_data = {
> +               .ops = &sdhci_cdns_ops,
> +       },
>  };
>
>  static void sdhci_cdns_hs400_enhanced_strobe(struct mmc_host *mmc,
> @@ -357,7 +366,7 @@ static void sdhci_cdns_hs400_enhanced_strobe(struct mmc_host *mmc,
>  static int sdhci_cdns_probe(struct platform_device *pdev)
>  {
>         struct sdhci_host *host;
> -       const struct sdhci_pltfm_data *data;
> +       const struct sdhci_cdns_drv_data *data;
>         struct sdhci_pltfm_host *pltfm_host;
>         struct sdhci_cdns_priv *priv;
>         struct clk *clk;
> @@ -376,10 +385,10 @@ static int sdhci_cdns_probe(struct platform_device *pdev)
>
>         data = of_device_get_match_data(dev);
>         if (!data)
> -               data = &sdhci_cdns_pltfm_data;
> +               data = &sdhci_cdns_drv_data;
>
>         nr_phy_params = sdhci_cdns_phy_param_count(dev->of_node);
> -       host = sdhci_pltfm_init(pdev, data,
> +       host = sdhci_pltfm_init(pdev, &data->pltfm_data,
>                                 struct_size(priv, phy_params, nr_phy_params));
>         if (IS_ERR(host)) {
>                 ret = PTR_ERR(host);
> @@ -397,6 +406,11 @@ static int sdhci_cdns_probe(struct platform_device *pdev)
>         host->ioaddr += SDHCI_CDNS_SRS_BASE;
>         host->mmc_host_ops.hs400_enhanced_strobe =
>                                 sdhci_cdns_hs400_enhanced_strobe;
> +       if (data->init) {
> +               ret = data->init(pdev);
> +               if (ret)
> +                       goto free;
> +       }
>         sdhci_enable_v4_mode(host);
>         __sdhci_read_caps(host, &version, NULL, NULL);
>
> @@ -461,7 +475,7 @@ static const struct dev_pm_ops sdhci_cdns_pm_ops = {
>  static const struct of_device_id sdhci_cdns_match[] = {
>         {
>                 .compatible = "socionext,uniphier-sd4hc",
> -               .data = &sdhci_cdns_uniphier_pltfm_data,
> +               .data = &sdhci_cdns_uniphier_drv_data,
>         },
>         { .compatible = "cdns,sd4hc" },
>         { /* sentinel */ }
> --
> 2.17.1
>