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[PATCH v5 2/3] soc: mediatek: mtk-svs: use common function to disable restore voltages

Roger Lu posted 3 patches 3 years ago
[PATCH v5 2/3] soc: mediatek: mtk-svs: use common function to disable restore voltages
Posted by Roger Lu 3 years ago 
The timing of disabling SVS bank and restore default voltage is more
than one place. Therefore, add a common function to use for removing
the superfluous codes.

Signed-off-by: Roger Lu <roger.lu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/soc/mediatek/mtk-svs.c | 54 ++++++++++++++--------------------
 1 file changed, 22 insertions(+), 32 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
index c9899f5df60a..299f580847bd 100644
--- a/drivers/soc/mediatek/mtk-svs.c
+++ b/drivers/soc/mediatek/mtk-svs.c
@@ -624,6 +624,25 @@ static int svs_adjust_pm_opp_volts(struct svs_bank *svsb)
 	return ret;
 }
 
+static void svs_bank_disable_and_restore_default_volts(struct svs_platform *svsp,
+						       struct svs_bank *svsb)
+{
+	unsigned long flags;
+
+	if (svsb->mode_support == SVSB_MODE_ALL_DISABLE)
+		return;
+
+	spin_lock_irqsave(&svs_lock, flags);
+	svsp->pbank = svsb;
+	svs_switch_bank(svsp);
+	svs_writel_relaxed(svsp, SVSB_PTPEN_OFF, SVSEN);
+	svs_writel_relaxed(svsp, SVSB_INTSTS_VAL_CLEAN, INTSTS);
+	spin_unlock_irqrestore(&svs_lock, flags);
+
+	svsb->phase = SVSB_PHASE_ERROR;
+	svs_adjust_pm_opp_volts(svsb);
+}
+
 #ifdef CONFIG_DEBUG_FS
 static int svs_dump_debug_show(struct seq_file *m, void *p)
 {
@@ -700,7 +719,6 @@ static ssize_t svs_enable_debug_write(struct file *filp,
 {
 	struct svs_bank *svsb = file_inode(filp)->i_private;
 	struct svs_platform *svsp = dev_get_drvdata(svsb->dev);
-	unsigned long flags;
 	int enabled, ret;
 	char *buf = NULL;
 
@@ -716,16 +734,8 @@ static ssize_t svs_enable_debug_write(struct file *filp,
 		return ret;
 
 	if (!enabled) {
-		spin_lock_irqsave(&svs_lock, flags);
-		svsp->pbank = svsb;
+		svs_bank_disable_and_restore_default_volts(svsp, svsb);
 		svsb->mode_support = SVSB_MODE_ALL_DISABLE;
-		svs_switch_bank(svsp);
-		svs_writel_relaxed(svsp, SVSB_PTPEN_OFF, SVSEN);
-		svs_writel_relaxed(svsp, SVSB_INTSTS_VAL_CLEAN, INTSTS);
-		spin_unlock_irqrestore(&svs_lock, flags);
-
-		svsb->phase = SVSB_PHASE_ERROR;
-		svs_adjust_pm_opp_volts(svsb);
 	}
 
 	kfree(buf);
@@ -1508,16 +1518,7 @@ static int svs_init02(struct svs_platform *svsp)
 out_of_init02:
 	for (idx = 0; idx < svsp->bank_max; idx++) {
 		svsb = &svsp->banks[idx];
-
-		spin_lock_irqsave(&svs_lock, flags);
-		svsp->pbank = svsb;
-		svs_switch_bank(svsp);
-		svs_writel_relaxed(svsp, SVSB_PTPEN_OFF, SVSEN);
-		svs_writel_relaxed(svsp, SVSB_INTSTS_VAL_CLEAN, INTSTS);
-		spin_unlock_irqrestore(&svs_lock, flags);
-
-		svsb->phase = SVSB_PHASE_ERROR;
-		svs_adjust_pm_opp_volts(svsb);
+		svs_bank_disable_and_restore_default_volts(svsp, svsb);
 	}
 
 	return ret;
@@ -1563,23 +1564,12 @@ static int svs_suspend(struct device *dev)
 {
 	struct svs_platform *svsp = dev_get_drvdata(dev);
 	struct svs_bank *svsb;
-	unsigned long flags;
 	int ret;
 	u32 idx;
 
 	for (idx = 0; idx < svsp->bank_max; idx++) {
 		svsb = &svsp->banks[idx];
-
-		/* This might wait for svs_isr() process */
-		spin_lock_irqsave(&svs_lock, flags);
-		svsp->pbank = svsb;
-		svs_switch_bank(svsp);
-		svs_writel_relaxed(svsp, SVSB_PTPEN_OFF, SVSEN);
-		svs_writel_relaxed(svsp, SVSB_INTSTS_VAL_CLEAN, INTSTS);
-		spin_unlock_irqrestore(&svs_lock, flags);
-
-		svsb->phase = SVSB_PHASE_ERROR;
-		svs_adjust_pm_opp_volts(svsb);
+		svs_bank_disable_and_restore_default_volts(svsp, svsb);
 	}
 
 	ret = reset_control_assert(svsp->rst);
-- 
2.18.0
Re: [PATCH v5 2/3] soc: mediatek: mtk-svs: use common function to disable restore voltages
Posted by Matthias Brugger 3 years ago 

On 02/02/2023 13:41, Roger Lu wrote:
> The timing of disabling SVS bank and restore default voltage is more
> than one place. Therefore, add a common function to use for removing
> the superfluous codes.
> 
> Signed-off-by: Roger Lu <roger.lu@mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Queued for the next merge window.

Thanks!

> ---
>   drivers/soc/mediatek/mtk-svs.c | 54 ++++++++++++++--------------------
>   1 file changed, 22 insertions(+), 32 deletions(-)
> 
> diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
> index c9899f5df60a..299f580847bd 100644
> --- a/drivers/soc/mediatek/mtk-svs.c
> +++ b/drivers/soc/mediatek/mtk-svs.c
> @@ -624,6 +624,25 @@ static int svs_adjust_pm_opp_volts(struct svs_bank *svsb)
>   	return ret;
>   }
>   
> +static void svs_bank_disable_and_restore_default_volts(struct svs_platform *svsp,
> +						       struct svs_bank *svsb)
> +{
> +	unsigned long flags;
> +
> +	if (svsb->mode_support == SVSB_MODE_ALL_DISABLE)
> +		return;
> +
> +	spin_lock_irqsave(&svs_lock, flags);
> +	svsp->pbank = svsb;
> +	svs_switch_bank(svsp);
> +	svs_writel_relaxed(svsp, SVSB_PTPEN_OFF, SVSEN);
> +	svs_writel_relaxed(svsp, SVSB_INTSTS_VAL_CLEAN, INTSTS);
> +	spin_unlock_irqrestore(&svs_lock, flags);
> +
> +	svsb->phase = SVSB_PHASE_ERROR;
> +	svs_adjust_pm_opp_volts(svsb);
> +}
> +
>   #ifdef CONFIG_DEBUG_FS
>   static int svs_dump_debug_show(struct seq_file *m, void *p)
>   {
> @@ -700,7 +719,6 @@ static ssize_t svs_enable_debug_write(struct file *filp,
>   {
>   	struct svs_bank *svsb = file_inode(filp)->i_private;
>   	struct svs_platform *svsp = dev_get_drvdata(svsb->dev);
> -	unsigned long flags;
>   	int enabled, ret;
>   	char *buf = NULL;
>   
> @@ -716,16 +734,8 @@ static ssize_t svs_enable_debug_write(struct file *filp,
>   		return ret;
>   
>   	if (!enabled) {
> -		spin_lock_irqsave(&svs_lock, flags);
> -		svsp->pbank = svsb;
> +		svs_bank_disable_and_restore_default_volts(svsp, svsb);
>   		svsb->mode_support = SVSB_MODE_ALL_DISABLE;
> -		svs_switch_bank(svsp);
> -		svs_writel_relaxed(svsp, SVSB_PTPEN_OFF, SVSEN);
> -		svs_writel_relaxed(svsp, SVSB_INTSTS_VAL_CLEAN, INTSTS);
> -		spin_unlock_irqrestore(&svs_lock, flags);
> -
> -		svsb->phase = SVSB_PHASE_ERROR;
> -		svs_adjust_pm_opp_volts(svsb);
>   	}
>   
>   	kfree(buf);
> @@ -1508,16 +1518,7 @@ static int svs_init02(struct svs_platform *svsp)
>   out_of_init02:
>   	for (idx = 0; idx < svsp->bank_max; idx++) {
>   		svsb = &svsp->banks[idx];
> -
> -		spin_lock_irqsave(&svs_lock, flags);
> -		svsp->pbank = svsb;
> -		svs_switch_bank(svsp);
> -		svs_writel_relaxed(svsp, SVSB_PTPEN_OFF, SVSEN);
> -		svs_writel_relaxed(svsp, SVSB_INTSTS_VAL_CLEAN, INTSTS);
> -		spin_unlock_irqrestore(&svs_lock, flags);
> -
> -		svsb->phase = SVSB_PHASE_ERROR;
> -		svs_adjust_pm_opp_volts(svsb);
> +		svs_bank_disable_and_restore_default_volts(svsp, svsb);
>   	}
>   
>   	return ret;
> @@ -1563,23 +1564,12 @@ static int svs_suspend(struct device *dev)
>   {
>   	struct svs_platform *svsp = dev_get_drvdata(dev);
>   	struct svs_bank *svsb;
> -	unsigned long flags;
>   	int ret;
>   	u32 idx;
>   
>   	for (idx = 0; idx < svsp->bank_max; idx++) {
>   		svsb = &svsp->banks[idx];
> -
> -		/* This might wait for svs_isr() process */
> -		spin_lock_irqsave(&svs_lock, flags);
> -		svsp->pbank = svsb;
> -		svs_switch_bank(svsp);
> -		svs_writel_relaxed(svsp, SVSB_PTPEN_OFF, SVSEN);
> -		svs_writel_relaxed(svsp, SVSB_INTSTS_VAL_CLEAN, INTSTS);
> -		spin_unlock_irqrestore(&svs_lock, flags);
> -
> -		svsb->phase = SVSB_PHASE_ERROR;
> -		svs_adjust_pm_opp_volts(svsb);
> +		svs_bank_disable_and_restore_default_volts(svsp, svsb);
>   	}
>   
>   	ret = reset_control_assert(svsp->rst);

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