scsi: ufs: creates wrapper functions for vops

[linux-2.6-block.git] / drivers / scsi / ufs / ufshcd.h

diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index c40a0e78a6c4298cf437dc312f0a136dd78abfa9..ce756266b0af56524d0c2da75cb5f23496b5be0f 100644 (file)
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -594,6 +594,27 @@ static inline void check_upiu_size(void)
                GENERAL_UPIU_REQUEST_SIZE + QUERY_DESC_MAX_SIZE);
 }
 
+/**
+ * ufshcd_set_variant - set variant specific data to the hba
+ * @hba - per adapter instance
+ * @variant - pointer to variant specific data
+ */
+static inline void ufshcd_set_variant(struct ufs_hba *hba, void *variant)
+{
+       BUG_ON(!hba);
+       hba->priv = variant;
+}
+
+/**
+ * ufshcd_get_variant - get variant specific data from the hba
+ * @hba - per adapter instance
+ */
+static inline void *ufshcd_get_variant(struct ufs_hba *hba)
+{
+       BUG_ON(!hba);
+       return hba->priv;
+}
+
 extern int ufshcd_runtime_suspend(struct ufs_hba *hba);
 extern int ufshcd_runtime_resume(struct ufs_hba *hba);
 extern int ufshcd_runtime_idle(struct ufs_hba *hba);
@@ -653,4 +674,102 @@ static inline int ufshcd_dme_peer_get(struct ufs_hba *hba,
 
 int ufshcd_hold(struct ufs_hba *hba, bool async);
 void ufshcd_release(struct ufs_hba *hba);
+
+/* Wrapper functions for safely calling variant operations */
+static inline const char *ufshcd_get_var_name(struct ufs_hba *hba)
+{
+       if (hba->vops)
+               return hba->vops->name;
+       return "";
+}
+
+static inline int ufshcd_vops_init(struct ufs_hba *hba)
+{
+       if (hba->vops && hba->vops->init)
+               return hba->vops->init(hba);
+
+       return 0;
+}
+
+static inline void ufshcd_vops_exit(struct ufs_hba *hba)
+{
+       if (hba->vops && hba->vops->exit)
+               return hba->vops->exit(hba);
+}
+
+static inline u32 ufshcd_vops_get_ufs_hci_version(struct ufs_hba *hba)
+{
+       if (hba->vops && hba->vops->get_ufs_hci_version)
+               return hba->vops->get_ufs_hci_version(hba);
+
+       return ufshcd_readl(hba, REG_UFS_VERSION);
+}
+
+static inline void ufshcd_vops_clk_scale_notify(struct ufs_hba *hba)
+{
+       if (hba->vops && hba->vops->clk_scale_notify)
+               return hba->vops->clk_scale_notify(hba);
+}
+
+static inline int ufshcd_vops_setup_clocks(struct ufs_hba *hba, bool on)
+{
+       if (hba->vops && hba->vops->setup_clocks)
+               return hba->vops->setup_clocks(hba, on);
+
+       return 0;
+}
+
+static inline int ufshcd_vops_setup_regulators(struct ufs_hba *hba, bool status)
+{
+       if (hba->vops && hba->vops->setup_regulators)
+               return hba->vops->setup_regulators(hba, status);
+
+       return 0;
+}
+
+static inline int ufshcd_vops_hce_enable_notify(struct ufs_hba *hba,
+                                               bool status)
+{
+       if (hba->vops && hba->vops->hce_enable_notify)
+               return hba->vops->hce_enable_notify(hba, status);
+
+       return 0;
+}
+static inline int ufshcd_vops_link_startup_notify(struct ufs_hba *hba,
+                                               bool status)
+{
+       if (hba->vops && hba->vops->link_startup_notify)
+               return hba->vops->link_startup_notify(hba, status);
+
+       return 0;
+}
+
+static inline int ufshcd_vops_pwr_change_notify(struct ufs_hba *hba,
+                                 bool status,
+                                 struct ufs_pa_layer_attr *dev_max_params,
+                                 struct ufs_pa_layer_attr *dev_req_params)
+{
+       if (hba->vops && hba->vops->pwr_change_notify)
+               return hba->vops->pwr_change_notify(hba, status,
+                                       dev_max_params, dev_req_params);
+
+       return -ENOTSUPP;
+}
+
+static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum ufs_pm_op op)
+{
+       if (hba->vops && hba->vops->suspend)
+               return hba->vops->suspend(hba, op);
+
+       return 0;
+}
+
+static inline int ufshcd_vops_resume(struct ufs_hba *hba, enum ufs_pm_op op)
+{
+       if (hba->vops && hba->vops->resume)
+               return hba->vops->resume(hba, op);
+
+       return 0;
+}
+
 #endif /* End of Header */