[PATCH v2 1/2] scsi: ufs: export hibern8 entry and exit

From: Bao D. Nguyen
Date: Tue Sep 28 2021 - 05:07:44 EST

From: Asutosh Das <asutoshd@xxxxxxxxxxxxxx>

Qualcomm controllers need to be in hibern8 before scaling up
or down the clocks. Hence, export the hibern8 entry and exit

Signed-off-by: Asutosh Das <asutoshd@xxxxxxxxxxxxxx>
Signed-off-by: Bao D. Nguyen <nguyenb@xxxxxxxxxxxxxx>
drivers/scsi/ufs/ufshcd.c | 4 ++--
drivers/scsi/ufs/ufshcd.h | 1 +
2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 3841ab49..f3aad32 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -227,7 +227,6 @@ static void ufshcd_hba_exit(struct ufs_hba *hba);
static int ufshcd_clear_ua_wluns(struct ufs_hba *hba);
static int ufshcd_probe_hba(struct ufs_hba *hba, bool async);
static int ufshcd_setup_clocks(struct ufs_hba *hba, bool on);
-static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba);
static inline void ufshcd_add_delay_before_dme_cmd(struct ufs_hba *hba);
static int ufshcd_host_reset_and_restore(struct ufs_hba *hba);
static void ufshcd_resume_clkscaling(struct ufs_hba *hba);
@@ -4116,7 +4115,7 @@ int ufshcd_link_recovery(struct ufs_hba *hba)

-static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
+int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
int ret;
struct uic_command uic_cmd = {0};
@@ -4138,6 +4137,7 @@ static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)

return ret;

int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 52ea6f3..124f50b 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -1001,6 +1001,7 @@ int ufshcd_init(struct ufs_hba *, void __iomem *, unsigned int);
int ufshcd_link_recovery(struct ufs_hba *hba);
int ufshcd_make_hba_operational(struct ufs_hba *hba);
void ufshcd_remove(struct ufs_hba *);
+int ufshcd_uic_hibern8_enter(struct ufs_hba *hba);
int ufshcd_uic_hibern8_exit(struct ufs_hba *hba);
void ufshcd_delay_us(unsigned long us, unsigned long tolerance);
int ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask,
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