[v4,1/2] scsi: ufs: export hibern8 entry

Commit Message

Asutosh Das (asd) May 20, 2020, 5:53 p.m. UTC

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

Signed-off-by: Asutosh Das <[e-mail]>
---
 drivers/scsi/ufs/ufshcd.c | 4 ++--
 drivers/scsi/ufs/ufshcd.h | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

Patch

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index c3389c9..aaf4adf 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -243,7 +243,6 @@  static int ufshcd_probe_hba(struct ufs_hba *hba, bool async);
 static int __ufshcd_setup_clocks(struct ufs_hba *hba, bool on,
 				 bool skip_ref_clk);
 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);
@@ -3877,7 +3876,7 @@  static int __ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
 	return ret;
 }
 
-static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
+int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
 {
 	int ret = 0, retries;
 
@@ -3889,6 +3888,7 @@  static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
 out:
 	return ret;
 }
+EXPORT_SYMBOL_GPL(ufshcd_uic_hibern8_enter);
 
 int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)
 {
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 88d4202..defc12c 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -835,6 +835,7 @@  int ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask,
 void ufshcd_parse_dev_ref_clk_freq(struct ufs_hba *hba, struct clk *refclk);
 void ufshcd_update_reg_hist(struct ufs_err_reg_hist *reg_hist,
 			    u32 reg);
+int ufshcd_uic_hibern8_enter(struct ufs_hba *hba);
 
 static inline void check_upiu_size(void)
 {