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Subject[PATCH v1 4/6] scsi: ufs: export ufshcd_auto_hibern8_update for vendor usage
Date
Export ufshcd_auto_hibern8_update to allow vendors to use common
interface to customize auto-hibernate timer.

Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
---
drivers/scsi/ufs/ufs-sysfs.c | 20 --------------------
drivers/scsi/ufs/ufshcd.c | 18 ++++++++++++++++++
drivers/scsi/ufs/ufshcd.h | 1 +
3 files changed, 19 insertions(+), 20 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
index ad2abc96c0f1..720be3f64be7 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/scsi/ufs/ufs-sysfs.c
@@ -118,26 +118,6 @@ static ssize_t spm_target_link_state_show(struct device *dev,
ufs_pm_lvl_states[hba->spm_lvl].link_state));
}

-static void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit)
-{
- unsigned long flags;
-
- if (!ufshcd_is_auto_hibern8_supported(hba))
- return;
-
- spin_lock_irqsave(hba->host->host_lock, flags);
- if (hba->ahit != ahit)
- hba->ahit = ahit;
- spin_unlock_irqrestore(hba->host->host_lock, flags);
- if (!pm_runtime_suspended(hba->dev)) {
- pm_runtime_get_sync(hba->dev);
- ufshcd_hold(hba, false);
- ufshcd_auto_hibern8_enable(hba);
- ufshcd_release(hba);
- pm_runtime_put(hba->dev);
- }
-}
-
/* Convert Auto-Hibernate Idle Timer register value to microseconds */
static int ufshcd_ahit_to_us(u32 ahit)
{
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index a6936bebb513..ed02a704c1c2 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -3893,6 +3893,24 @@ static int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)
return ret;
}

+void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit)
+{
+ unsigned long flags;
+
+ if (!(hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT))
+ return;
+
+ spin_lock_irqsave(hba->host->host_lock, flags);
+ if (hba->ahit == ahit)
+ goto out_unlock;
+ hba->ahit = ahit;
+ if (!pm_runtime_suspended(hba->dev))
+ ufshcd_writel(hba, hba->ahit, REG_AUTO_HIBERNATE_IDLE_TIMER);
+out_unlock:
+ spin_unlock_irqrestore(hba->host->host_lock, flags);
+}
+EXPORT_SYMBOL_GPL(ufshcd_auto_hibern8_update);
+
void ufshcd_auto_hibern8_enable(struct ufs_hba *hba)
{
unsigned long flags;
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index b536a26d665e..e05cafddc87b 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -923,6 +923,7 @@ int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
enum flag_idn idn, bool *flag_res);

void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
+void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);

#define SD_ASCII_STD true
#define SD_RAW false
--
2.18.0
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