Commit 525943a5 authored by Asutosh Das's avatar Asutosh Das Committed by Martin K. Petersen
Browse files

scsi: ufs: core: Export hibern8 entry and exit functions 

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

Link: https://lore.kernel.org/r/a29bfdd0c8f1d1a3e5fb69e43ea277c97a7f0cb6.1632818942.git.nguyenb@codeaurora.org


Reviewed-by: default avatarBart Van Assche <bvanassche@acm.org>
Reviewed-by: default avatarAlim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: default avatarAsutosh Das <asutoshd@codeaurora.org>
Signed-off-by: default avatarBao D. Nguyen <nguyenb@codeaurora.org>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent a5b141a8

drivers/scsi/ufs/ufshcd.c

+2 −2
Original line number Diff line number Diff line
@@ -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) 
}

EXPORT_SYMBOL_GPL(ufshcd_link_recovery);



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;

}

EXPORT_SYMBOL_GPL(ufshcd_uic_hibern8_enter);



int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)

{

drivers/scsi/ufs/ufshcd.h

+1 −0
Original line number Diff line number Diff line
@@ -1011,6 +1011,7 @@ 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,