[v1,2/4] scsi: ufs: export ufshcd_auto_hibern8_update for vendor usage
diff mbox series

Message ID 1576224695-22657-3-git-send-email-stanley.chu@mediatek.com
State New
Headers show
Series
  • scsi: ufs-mediatek: provide power management
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Commit Message

Stanley Chu Dec. 13, 2019, 8:11 a.m. UTC
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>
---
 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(-)

Comments

Asutosh Das (asd) Dec. 18, 2019, 11:53 p.m. UTC | #1
On 12/13/2019 12:11 AM, Stanley Chu wrote:
> 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>
> ---
>   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 b5966faf3e98..589f519316aa 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -3956,6 +3956,24 @@ 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 2740f6941ec6..86586a0b9aa5 100644
> --- a/drivers/scsi/ufs/ufshcd.h
> +++ b/drivers/scsi/ufs/ufshcd.h
> @@ -927,6 +927,7 @@ 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
> 

Looks good to me.

Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Alim Akhtar Dec. 19, 2019, 6:32 p.m. UTC | #2
On Fri, Dec 13, 2019 at 2:07 PM Stanley Chu <stanley.chu@mediatek.com> wrote:
>
> 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: 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 b5966faf3e98..589f519316aa 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -3956,6 +3956,24 @@ 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 2740f6941ec6..86586a0b9aa5 100644
> --- a/drivers/scsi/ufs/ufshcd.h
> +++ b/drivers/scsi/ufs/ufshcd.h
> @@ -927,6 +927,7 @@ 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

Patch
diff mbox series

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 b5966faf3e98..589f519316aa 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -3956,6 +3956,24 @@  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 2740f6941ec6..86586a0b9aa5 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -927,6 +927,7 @@  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