[PATCH v6 2/7] ufs: add UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS

[Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>]

Add UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS for a broken host controller
of the 64-bit addressing supported capability.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
 drivers/ufs/core/ufshcd.c | 2 ++
 include/ufs/ufshcd.h      | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 01fb4bad86be..88e567c3ba0b 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -2216,6 +2216,8 @@ static inline int ufshcd_hba_capabilities(struct ufs_hba *hba)
 	int err;
 
 	hba->capabilities = ufshcd_readl(hba, REG_CONTROLLER_CAPABILITIES);
+	if (hba->quirks & UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS)
+		hba->capabilities &= ~MASK_64_ADDRESSING_SUPPORT;
 
 	/* nutrs and nutmrs are 0 based values */
 	hba->nutrs = (hba->capabilities & MASK_TRANSFER_REQUESTS_SLOTS) + 1;
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index a92271421718..795c8951341d 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -577,6 +577,12 @@ enum ufshcd_quirks {
 	 * support physical host configuration.
 	 */
 	UFSHCD_QUIRK_SKIP_PH_CONFIGURATION		= 1 << 16,
+
+	/*
+	 * This quirk needs to be enabled if the host controller has
+	 * 64-bit addressing supported capability but it doesn't work.
+	 */
+	UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS		= 1 << 17,
 };
 
 enum ufshcd_caps {
-- 
2.25.1