scsi: ufs: Disable local LCC in .link_startup_notify() in Cadence UFS (e55f24ff) · Commits · 戴 / test

drivers/scsi/ufs/cdns-pltfrm.c

+27 −0

Original line number	Diff line number	Diff line
		@@ -77,6 +77,31 @@ static int cdns_ufs_hce_enable_notify(struct ufs_hba *hba,
		return cdns_ufs_set_hclkdiv(hba);
		}

		/**
		* Called before and after Link startup is carried out.
		* @hba: host controller instance
		* @status: notify stage (pre, post change)
		*
		* Return zero for success and non-zero for failure
		*/
		static int cdns_ufs_link_startup_notify(struct ufs_hba *hba,
		enum ufs_notify_change_status status)
		{
		if (status != PRE_CHANGE)
		return 0;

		/*
		* Some UFS devices have issues if LCC is enabled.
		* So we are setting PA_Local_TX_LCC_Enable to 0
		* before link startup which will make sure that both host
		* and device TX LCC are disabled once link startup is
		* completed.
		*/
		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0);

		return 0;
		}

		/**
		* cdns_ufs_init - performs additional ufs initialization
		* @hba: host controller instance
		@@ -114,12 +139,14 @@ static int cdns_ufs_m31_16nm_phy_initialization(struct ufs_hba *hba)
		static const struct ufs_hba_variant_ops cdns_ufs_pltfm_hba_vops = {
		.name = "cdns-ufs-pltfm",
		.hce_enable_notify = cdns_ufs_hce_enable_notify,
		.link_startup_notify = cdns_ufs_link_startup_notify,
		};

		static const struct ufs_hba_variant_ops cdns_ufs_m31_16nm_pltfm_hba_vops = {
		.name = "cdns-ufs-pltfm",
		.init = cdns_ufs_init,
		.hce_enable_notify = cdns_ufs_hce_enable_notify,
		.link_startup_notify = cdns_ufs_link_startup_notify,
		.phy_initialization = cdns_ufs_m31_16nm_phy_initialization,
		};