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FROMLIST: scsi: ufs: export hibern8 entry and exit

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

Bug: 143136976
Link: https://lore.kernel.org/lkml/1571849351-819-1-git-send-email-asutoshd@codeaurora.org/
Change-Id: Ie7dc3b953790642e6d2893de6e6cc8c9cfb8be6d
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
This commit is contained in:
Asutosh Das
2019-10-22 18:03:02 -07:00
committed by Todd Kjos
parent ecdebfe423
commit 38c1605e75
2 changed files with 6 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/scsi/ufs/ufshcd.c
View File

@@ -248,8 +248,6 @@ static int ufshcd_probe_hba(struct ufs_hba *hba);
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_exit(struct ufs_hba *hba);
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);
@@ -3929,7 +3927,7 @@ 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;
@@ -3941,8 +3939,9 @@ static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
out:
return ret;
}
EXPORT_SYMBOL_GPL(ufshcd_uic_hibern8_enter);
static int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)
int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)
{
struct uic_command uic_cmd = {0};
int ret;
@@ -3968,6 +3967,7 @@ static int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)
return ret;
}
EXPORT_SYMBOL_GPL(ufshcd_uic_hibern8_exit);
static void ufshcd_auto_hibern8_enable(struct ufs_hba *hba)
{

3
drivers/scsi/ufs/ufshcd.h
View File

@@ -1145,5 +1145,6 @@ static inline u8 ufshcd_scsi_to_upiu_lun(unsigned int scsi_lun)
int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
const char *prefix);
int ufshcd_uic_hibern8_enter(struct ufs_hba *hba);
int ufshcd_uic_hibern8_exit(struct ufs_hba *hba);
#endif /* End of Header */