RE: [PATCH 2/3] scsi: ufs: qcom: Allow passing platform specific OF data

[Avri Altman <Avri.Altman@wdc.com>]

> From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> 
> In order to allow platform specific flags and configurations, introduce the
> platform specific OF data and move the existing quirk
> UFSHCD_QUIRK_BROKEN_LSDBS_CAP for SM8550 and SM8650 SoCs.
> 
> Signed-off-by: Manivannan Sadhasivam
> <manivannan.sadhasivam@linaro.org>
A nit below.

Reviewed-by: Avri Altman <avri.altman@wdc.com>

> ---
>  drivers/ufs/host/ufs-qcom.c | 13 +++++++++----  drivers/ufs/host/ufs-qcom.h
> |  4 ++++
>  2 files changed, 13 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index
> 32b0c74437de..35ae8c8fc301 100644
> --- a/drivers/ufs/host/ufs-qcom.c
> +++ b/drivers/ufs/host/ufs-qcom.c
> @@ -871,6 +871,7 @@ static u32 ufs_qcom_get_ufs_hci_version(struct
> ufs_hba *hba)
>   */
>  static void ufs_qcom_advertise_quirks(struct ufs_hba *hba)  {
> +       const struct ufs_qcom_drvdata *drvdata =
> + of_device_get_match_data(hba->dev);
>         struct ufs_qcom_host *host = ufshcd_get_variant(hba);
> 
>         if (host->hw_ver.major == 0x2)
> @@ -879,9 +880,8 @@ static void ufs_qcom_advertise_quirks(struct ufs_hba
> *hba)
>         if (host->hw_ver.major > 0x3)
>                 hba->quirks |= UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH;
> 
> -       if (of_device_is_compatible(hba->dev->of_node, "qcom,sm8550-ufshc")
> ||
> -           of_device_is_compatible(hba->dev->of_node, "qcom,sm8650-ufshc"))
> -               hba->quirks |= UFSHCD_QUIRK_BROKEN_LSDBS_CAP;
> +       if (drvdata && drvdata->quirks)
> +               hba->quirks |= drvdata->quirks;
>  }
> 
>  static void ufs_qcom_set_phy_gear(struct ufs_qcom_host *host) @@ -
> 1864,9 +1864,14 @@ static void ufs_qcom_remove(struct platform_device
> *pdev)
>         platform_device_msi_free_irqs_all(hba->dev);
>  }
> 
> +static const struct ufs_qcom_drvdata ufs_qcom_sm8550_drvdata = {
> +       .quirks = UFSHCD_QUIRK_BROKEN_LSDBS_CAP, };
> +
>  static const struct of_device_id ufs_qcom_of_match[] __maybe_unused = {
>         { .compatible = "qcom,ufshc" },
> -       { .compatible = "qcom,sm8550-ufshc" },
> +       { .compatible = "qcom,sm8550-ufshc", .data =
> &ufs_qcom_sm8550_drvdata },
> +       { .compatible = "qcom,sm8650-ufshc", .data =
> + &ufs_qcom_sm8550_drvdata },
>         {},
>  };
>  MODULE_DEVICE_TABLE(of, ufs_qcom_of_match); diff --git
> a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h index
> b9de170983c9..e85cc6fc072e 100644
> --- a/drivers/ufs/host/ufs-qcom.h
> +++ b/drivers/ufs/host/ufs-qcom.h
> @@ -217,6 +217,10 @@ struct ufs_qcom_host {
>         bool esi_enabled;
>  };
> 
> +struct ufs_qcom_drvdata {
> +       unsigned int quirks;
Maybe enum ufshcd_quirks ?

Thanks,
Avri
> +};
> +
>  static inline u32
>  ufs_qcom_get_debug_reg_offset(struct ufs_qcom_host *host, u32 reg)  {
> 
> --
> 2.25.1
>