scsi: ufs: ufs-mediatek: Fix HCI version in some platforms

Some MediaTek SoC platforms with UFSHCI version below 3.0 have incorrect
UFSHCI versions showed in register map.

Fix the version by referring to UniPro version which is always correct.

Link: https://lore.kernel.org/r/[e-mail]
Reviewed-by: Alim Akhtar <[e-mail]>
Signed-off-by: Stanley Chu <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/ufs/ufs-mediatek.c

···
 
 	ret = ufshcd_dme_get(hba, UIC_ARG_MIB(PA_LOCALVERINFO), &ver);
 	if (!ret) {
-		if (ver >= UFS_UNIPRO_VER_1_8)
+		if (ver >= UFS_UNIPRO_VER_1_8) {
 			host->hw_ver.major = 3;
+			/*
+			 * Fix HCI version for some platforms with
+			 * incorrect version
+			 */
+			if (hba->ufs_version < ufshci_version(3, 0))
+				hba->ufs_version = ufshci_version(3, 0);
+		}
 	}
+}
+
+static u32 ufs_mtk_get_ufs_hci_version(struct ufs_hba *hba)
+{
+	return hba->ufs_version;
 }
 
 /**
···
 static const struct ufs_hba_variant_ops ufs_hba_mtk_vops = {
 	.name                = "mediatek.ufshci",
 	.init                = ufs_mtk_init,
+	.get_ufs_hci_version = ufs_mtk_get_ufs_hci_version,
 	.setup_clocks        = ufs_mtk_setup_clocks,
 	.hce_enable_notify   = ufs_mtk_hce_enable_notify,
 	.link_startup_notify = ufs_mtk_link_startup_notify,