[PATCH 05/10] scsi: ufs: dwc: Export common clock divider and link status helpers

[Frank Li]

On Wed, Aug 26, 2026 at 03:40:43PM +0200, Larisa Grigore wrote:
>
> Make ufshcd_dwc_program_clk_div() and ufshcd_dwc_link_is_up() available to
> DWC-based platform glue drivers. These helpers are needed by platform
> drivers that must program the controller HCLK divider and verify link state
> during their vendor-specific initialization flows.
>
> Signed-off-by: Larisa Grigore <larisa.grigore at oss.nxp.com>
> ---

Reviewed-by: Frank Li <Frank.Li at nxp.com>

>  drivers/ufs/host/ufshcd-dwc.c | 6 ++++--
>  drivers/ufs/host/ufshcd-dwc.h | 2 ++
>  2 files changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/ufs/host/ufshcd-dwc.c b/drivers/ufs/host/ufshcd-dwc.c
> index 45920793d1a8..4a689d211e81 100644
> --- a/drivers/ufs/host/ufshcd-dwc.c
> +++ b/drivers/ufs/host/ufshcd-dwc.c
> @@ -39,10 +39,11 @@ EXPORT_SYMBOL(ufshcd_dwc_dme_set_attrs);
>   * @divider_val: clock divider value to be programmed
>   *
>   */
> -static void ufshcd_dwc_program_clk_div(struct ufs_hba *hba, u32 divider_val)
> +void ufshcd_dwc_program_clk_div(struct ufs_hba *hba, u32 divider_val)
>  {
>         ufshcd_writel(hba, divider_val, DWC_UFS_REG_HCLKDIV);
>  }
> +EXPORT_SYMBOL(ufshcd_dwc_program_clk_div);
>
>  /**
>   * ufshcd_dwc_link_is_up() - check if link is up.
> @@ -50,7 +51,7 @@ static void ufshcd_dwc_program_clk_div(struct ufs_hba *hba, u32 divider_val)
>   *
>   * Return: 0 on success, non-zero value on failure.
>   */
> -static int ufshcd_dwc_link_is_up(struct ufs_hba *hba)
> +int ufshcd_dwc_link_is_up(struct ufs_hba *hba)
>  {
>         int dme_result = 0;
>
> @@ -63,6 +64,7 @@ static int ufshcd_dwc_link_is_up(struct ufs_hba *hba)
>
>         return 1;
>  }
> +EXPORT_SYMBOL(ufshcd_dwc_link_is_up);
>
>  /**
>   * ufshcd_dwc_connection_setup() - configure unipro attributes.
> diff --git a/drivers/ufs/host/ufshcd-dwc.h b/drivers/ufs/host/ufshcd-dwc.h
> index d8673cd54d4c..53b523ef59df 100644
> --- a/drivers/ufs/host/ufshcd-dwc.h
> +++ b/drivers/ufs/host/ufshcd-dwc.h
> @@ -47,4 +47,6 @@ int ufshcd_dwc_dme_set_attrs(struct ufs_hba *hba,
>                                 const struct ufshcd_dme_attr_val *v, int n);
>  int ufshcd_dwc_phy_reg_write(struct ufs_hba *hba, u32 addr, u32 val);
>  int ufshcd_dwc_phy_reg_read(struct ufs_hba *hba, u32 addr, u32 *val);
> +int ufshcd_dwc_link_is_up(struct ufs_hba *hba);
> +void ufshcd_dwc_program_clk_div(struct ufs_hba *hba, u32 divider_val);
>  #endif /* End of Header */
> --
> 2.43.0
>
>