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* [PATCH v4 1/2] scsi: ufs: export hibern8 entry
@ 2020-05-20 17:53 Asutosh Das
  2020-05-20 17:53 ` [PATCH v4 2/2] scsi: ufs-qcom: enter and exit hibern8 during clock scaling Asutosh Das
  0 siblings, 1 reply; 5+ messages in thread
From: Asutosh Das @ 2020-05-20 17:53 UTC (permalink / raw)
  To: cang, martin.petersen, PedroM.Sousa, linux-scsi
  Cc: Asutosh Das, linux-arm-msm, Alim Akhtar, Avri Altman,
	James E.J. Bottomley, Stanley Chu, Bean Huo, Bart Van Assche,
	Tomas Winkler, open list

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 <asutoshd@codeaurora.org>
---
 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 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)
 {
-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.


^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2021-05-25 16:44 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2020-05-20 17:53 [PATCH v4 1/2] scsi: ufs: export hibern8 entry Asutosh Das
2020-05-20 17:53 ` [PATCH v4 2/2] scsi: ufs-qcom: enter and exit hibern8 during clock scaling Asutosh Das
2020-05-20 21:33   ` Avri Altman
2020-05-20 21:59     ` Asutosh Das (asd)
     [not found]       ` <CAF2Aj3gpMhPf8dF7cxcW0AhwGmGtf=LbO6HPB0u3FxudWTBcoQ@mail.gmail.com>
2021-05-25 16:44         ` Asutosh Das (asd)

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