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

[Neil Armstrong <neil.armstrong@linaro.org>]

On 11/12/2024 18:40, Manivannan Sadhasivam via B4 Relay wrote:
> 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>
> ---
>   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;
> +};
> +
>   static inline u32
>   ufs_qcom_get_debug_reg_offset(struct ufs_qcom_host *host, u32 reg)
>   {
> 

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>