diff mbox series

[v3,2/7] drivers: regulator: qcom_spmi: Refactor get_mode/set_mode

Message ID 20190613142239.8779-1-jeffrey.l.hugo@gmail.com (mailing list archive)
State Superseded, archived
Headers show
Series PM8005 and PMS405 regulator support | expand

Commit Message

Jeffrey Hugo June 13, 2019, 2:22 p.m. UTC 
spmi_regulator_common_get_mode and spmi_regulator_common_set_mode use
multi-level ifs which mirror a switch statement.  Refactor to use a switch
statement to make the code flow more clear.

Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
---
 drivers/regulator/qcom_spmi-regulator.c | 28 ++++++++++++++++---------
 1 file changed, 18 insertions(+), 10 deletions(-)

Comments

Bjorn Andersson June 13, 2019, 3:12 p.m. UTC | #1 
On Thu 13 Jun 07:22 PDT 2019, Jeffrey Hugo wrote:

> spmi_regulator_common_get_mode and spmi_regulator_common_set_mode use
> multi-level ifs which mirror a switch statement.  Refactor to use a switch
> statement to make the code flow more clear.
> 
> Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
> ---
>  drivers/regulator/qcom_spmi-regulator.c | 28 ++++++++++++++++---------
>  1 file changed, 18 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/regulator/qcom_spmi-regulator.c b/drivers/regulator/qcom_spmi-regulator.c
> index fd55438c25d6..1c18fe5969b5 100644
> --- a/drivers/regulator/qcom_spmi-regulator.c
> +++ b/drivers/regulator/qcom_spmi-regulator.c
> @@ -911,13 +911,14 @@ static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev)
>  
>  	spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
>  
> -	if (reg & SPMI_COMMON_MODE_HPM_MASK)
> +	switch (reg) {
> +	case SPMI_COMMON_MODE_HPM_MASK:
>  		return REGULATOR_MODE_NORMAL;
> -
> -	if (reg & SPMI_COMMON_MODE_AUTO_MASK)
> +	case SPMI_COMMON_MODE_AUTO_MASK:
>  		return REGULATOR_MODE_FAST;
> -
> -	return REGULATOR_MODE_IDLE;
> +	default:
> +		return REGULATOR_MODE_IDLE;
> +	}
>  }
>  
>  static int
> @@ -925,12 +926,19 @@ spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode)
>  {
>  	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
>  	u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
> -	u8 val = 0;
> +	u8 val;
>  
> -	if (mode == REGULATOR_MODE_NORMAL)
> +	switch (mode) {
> +	case REGULATOR_MODE_NORMAL:
>  		val = SPMI_COMMON_MODE_HPM_MASK;
> -	else if (mode == REGULATOR_MODE_FAST)
> +		break;
> +	case REGULATOR_MODE_FAST:
>  		val = SPMI_COMMON_MODE_AUTO_MASK;
> +		break;
> +	default:
> +		val = 0;
> +		break;
> +	}

For this part:
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
>  
>  	return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
>  }
> @@ -1834,9 +1842,9 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev)
>  			}
>  		}
>  
> -		if (vreg->logical_type == SPMI_REGULATOR_LOGICAL_TYPE_HFS430) {

Squash this into patch 1.

Regards,
Bjorn

> +		if (vreg->set_points->count == 1) {
>  			/* since there is only one range */
> -			range = spmi_regulator_find_range(vreg);
> +			range = vreg->set_points->range;
>  			vreg->desc.uV_step = range->step_uV;
>  		}
>  
> -- 
> 2.17.1
>
Bjorn Andersson June 13, 2019, 3:24 p.m. UTC | #2 
On Thu 13 Jun 08:12 PDT 2019, Bjorn Andersson wrote:

> On Thu 13 Jun 07:22 PDT 2019, Jeffrey Hugo wrote:
> 
> > spmi_regulator_common_get_mode and spmi_regulator_common_set_mode use
> > multi-level ifs which mirror a switch statement.  Refactor to use a switch
> > statement to make the code flow more clear.
> > 
> > Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
> > ---
> >  drivers/regulator/qcom_spmi-regulator.c | 28 ++++++++++++++++---------
> >  1 file changed, 18 insertions(+), 10 deletions(-)
> > 
> > diff --git a/drivers/regulator/qcom_spmi-regulator.c b/drivers/regulator/qcom_spmi-regulator.c
> > index fd55438c25d6..1c18fe5969b5 100644
> > --- a/drivers/regulator/qcom_spmi-regulator.c
> > +++ b/drivers/regulator/qcom_spmi-regulator.c
> > @@ -911,13 +911,14 @@ static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev)
> >  
> >  	spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
> >  
> > -	if (reg & SPMI_COMMON_MODE_HPM_MASK)

Sorry, didn't see the & here. Don't you need to mask out the mode bits
before turning this into a switch?

> > +	switch (reg) {
> > +	case SPMI_COMMON_MODE_HPM_MASK:
> >  		return REGULATOR_MODE_NORMAL;
> > -
> > -	if (reg & SPMI_COMMON_MODE_AUTO_MASK)
> > +	case SPMI_COMMON_MODE_AUTO_MASK:
> >  		return REGULATOR_MODE_FAST;
> > -
> > -	return REGULATOR_MODE_IDLE;
> > +	default:
> > +		return REGULATOR_MODE_IDLE;
> > +	}
> >  }
> >  
> >  static int
> > @@ -925,12 +926,19 @@ spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode)
> >  {
> >  	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
> >  	u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
> > -	u8 val = 0;
> > +	u8 val;
> >  
> > -	if (mode == REGULATOR_MODE_NORMAL)
> > +	switch (mode) {
> > +	case REGULATOR_MODE_NORMAL:
> >  		val = SPMI_COMMON_MODE_HPM_MASK;
> > -	else if (mode == REGULATOR_MODE_FAST)
> > +		break;
> > +	case REGULATOR_MODE_FAST:
> >  		val = SPMI_COMMON_MODE_AUTO_MASK;
> > +		break;
> > +	default:
> > +		val = 0;
> > +		break;
> > +	}
> 
> For this part:
> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> >  
> >  	return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
> >  }
> > @@ -1834,9 +1842,9 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev)
> >  			}
> >  		}
> >  
> > -		if (vreg->logical_type == SPMI_REGULATOR_LOGICAL_TYPE_HFS430) {
> 
> Squash this into patch 1.
> 
> Regards,
> Bjorn
> 
> > +		if (vreg->set_points->count == 1) {
> >  			/* since there is only one range */
> > -			range = spmi_regulator_find_range(vreg);
> > +			range = vreg->set_points->range;
> >  			vreg->desc.uV_step = range->step_uV;
> >  		}
> >  
> > -- 
> > 2.17.1
> >
Jeffrey Hugo June 13, 2019, 3:37 p.m. UTC | #3 
On Thu, Jun 13, 2019 at 9:24 AM Bjorn Andersson
<bjorn.andersson@linaro.org> wrote:
>
> On Thu 13 Jun 08:12 PDT 2019, Bjorn Andersson wrote:
>
> > On Thu 13 Jun 07:22 PDT 2019, Jeffrey Hugo wrote:
> >
> > > spmi_regulator_common_get_mode and spmi_regulator_common_set_mode use
> > > multi-level ifs which mirror a switch statement.  Refactor to use a switch
> > > statement to make the code flow more clear.
> > >
> > > Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
> > > ---
> > >  drivers/regulator/qcom_spmi-regulator.c | 28 ++++++++++++++++---------
> > >  1 file changed, 18 insertions(+), 10 deletions(-)
> > >
> > > diff --git a/drivers/regulator/qcom_spmi-regulator.c b/drivers/regulator/qcom_spmi-regulator.c
> > > index fd55438c25d6..1c18fe5969b5 100644
> > > --- a/drivers/regulator/qcom_spmi-regulator.c
> > > +++ b/drivers/regulator/qcom_spmi-regulator.c
> > > @@ -911,13 +911,14 @@ static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev)
> > >
> > >     spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
> > >
> > > -   if (reg & SPMI_COMMON_MODE_HPM_MASK)
>
> Sorry, didn't see the & here. Don't you need to mask out the mode bits
> before turning this into a switch?

Ah.  Yes.  I read the documentation wrong when doing this.  Will fix.

>
> > > +   switch (reg) {
> > > +   case SPMI_COMMON_MODE_HPM_MASK:
> > >             return REGULATOR_MODE_NORMAL;
> > > -
> > > -   if (reg & SPMI_COMMON_MODE_AUTO_MASK)
> > > +   case SPMI_COMMON_MODE_AUTO_MASK:
> > >             return REGULATOR_MODE_FAST;
> > > -
> > > -   return REGULATOR_MODE_IDLE;
> > > +   default:
> > > +           return REGULATOR_MODE_IDLE;
> > > +   }
> > >  }
> > >
> > >  static int
> > > @@ -925,12 +926,19 @@ spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode)
> > >  {
> > >     struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
> > >     u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
> > > -   u8 val = 0;
> > > +   u8 val;
> > >
> > > -   if (mode == REGULATOR_MODE_NORMAL)
> > > +   switch (mode) {
> > > +   case REGULATOR_MODE_NORMAL:
> > >             val = SPMI_COMMON_MODE_HPM_MASK;
> > > -   else if (mode == REGULATOR_MODE_FAST)
> > > +           break;
> > > +   case REGULATOR_MODE_FAST:
> > >             val = SPMI_COMMON_MODE_AUTO_MASK;
> > > +           break;
> > > +   default:
> > > +           val = 0;
> > > +           break;
> > > +   }
> >
> > For this part:
> > Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> > >
> > >     return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
> > >  }
> > > @@ -1834,9 +1842,9 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev)
> > >                     }
> > >             }
> > >
> > > -           if (vreg->logical_type == SPMI_REGULATOR_LOGICAL_TYPE_HFS430) {
> >
> > Squash this into patch 1.
> >
> > Regards,
> > Bjorn
> >
> > > +           if (vreg->set_points->count == 1) {
> > >                     /* since there is only one range */
> > > -                   range = spmi_regulator_find_range(vreg);
> > > +                   range = vreg->set_points->range;
> > >                     vreg->desc.uV_step = range->step_uV;
> > >             }
> > >
> > > --
> > > 2.17.1
> > >
diff mbox series

Patch

diff --git a/drivers/regulator/qcom_spmi-regulator.c b/drivers/regulator/qcom_spmi-regulator.c
index fd55438c25d6..1c18fe5969b5 100644
--- a/drivers/regulator/qcom_spmi-regulator.c
+++ b/drivers/regulator/qcom_spmi-regulator.c
@@ -911,13 +911,14 @@  static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev)
 
 	spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
 
-	if (reg & SPMI_COMMON_MODE_HPM_MASK)
+	switch (reg) {
+	case SPMI_COMMON_MODE_HPM_MASK:
 		return REGULATOR_MODE_NORMAL;
-
-	if (reg & SPMI_COMMON_MODE_AUTO_MASK)
+	case SPMI_COMMON_MODE_AUTO_MASK:
 		return REGULATOR_MODE_FAST;
-
-	return REGULATOR_MODE_IDLE;
+	default:
+		return REGULATOR_MODE_IDLE;
+	}
 }
 
 static int
@@ -925,12 +926,19 @@  spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode)
 {
 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
 	u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
-	u8 val = 0;
+	u8 val;
 
-	if (mode == REGULATOR_MODE_NORMAL)
+	switch (mode) {
+	case REGULATOR_MODE_NORMAL:
 		val = SPMI_COMMON_MODE_HPM_MASK;
-	else if (mode == REGULATOR_MODE_FAST)
+		break;
+	case REGULATOR_MODE_FAST:
 		val = SPMI_COMMON_MODE_AUTO_MASK;
+		break;
+	default:
+		val = 0;
+		break;
+	}
 
 	return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
 }
@@ -1834,9 +1842,9 @@  static int qcom_spmi_regulator_probe(struct platform_device *pdev)
 			}
 		}
 
-		if (vreg->logical_type == SPMI_REGULATOR_LOGICAL_TYPE_HFS430) {
+		if (vreg->set_points->count == 1) {
 			/* since there is only one range */
-			range = spmi_regulator_find_range(vreg);
+			range = vreg->set_points->range;
 			vreg->desc.uV_step = range->step_uV;
 		}