Re: [PATCH v3 2/2] iio: tsl2772: Use regulator_bulk_() APIs

[Chuhong Yuan]

Brian Masney  于2019年7月31日周三 下午5:40写道：
>
> Hi Chuhong,
>
> On Wed, Jul 31, 2019 at 11:04:23AM +0800, Chuhong Yuan wrote:
> > Use regulator_bulk_() APIs to shrink driver size.
> >
> > Signed-off-by: Chuhong Yuan 
>
> Just a few minor nitpicks below. Overall, this is looking nice.
>
> > ---
> > Changes in v3:
> >   - Split v2 into two patches.
> >   - Add dev_err to log error messages.
> >   - Add a check for EPROBE_DEFER.
> >
> >  drivers/iio/light/tsl2772.c | 82 +++--
> >  1 file changed, 24 insertions(+), 58 deletions(-)
> >
> > diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
> > index f1134f183be7..fd6d44297dba 100644
> > --- a/drivers/iio/light/tsl2772.c
> > +++ b/drivers/iio/light/tsl2772.c
> > @@ -134,6 +134,12 @@ enum {
> >   TSL2772_CHIP_SUSPENDED = 2
> >  };
> >
> > +enum {
> > + TSL2772_SUPPLY_VDD = 0,
> > + TSL2772_SUPPLY_VDDIO = 1,
> > + TSL2772_NUM_SUPPLIES = 2
> > +};
> > +
> >  /* Per-device data */
> >  struct tsl2772_als_info {
> >   u16 als_ch0;
> > @@ -161,8 +167,7 @@ struct tsl2772_chip {
> >   struct mutex prox_mutex;
> >   struct mutex als_mutex;
> >   struct i2c_client *client;
> > - struct regulator *vdd_supply;
> > - struct regulator *vddio_supply;
> > + struct regulator_bulk_data reg[TSL2772_NUM_SUPPLIES];
>
> I prefer that this was named something other than 'reg'. Maybe
> 'supplies'? I know that there are a few other drivers in IIO that use
> this name.
>

I have used grep "regulator_bulk_data" in drivers/iio but find no variable
is named "supplies"...

> >   u16 prox_data;
> >   struct tsl2772_als_info als_cur_info;
> >   struct tsl2772_settings settings;
> > @@ -697,46 +702,7 @@ static void tsl2772_disable_regulators_action(void 
> > *_data)
> >  {
> >   struct tsl2772_chip *chip = _data;
> >
> > - regulator_disable(chip->vdd_supply);
> > - regulator_disable(chip->vddio_supply);
> > -}
> > -
> > -static int tsl2772_enable_regulator(struct tsl2772_chip *chip,
> > - struct regulator *regulator)
> > -{
> > - int ret;
> > -
> > - ret = regulator_enable(regulator);
> > - if (ret < 0) {
> > - dev_err(&chip->client->dev, "Failed to enable regulator: 
> > %d\n",
> > - ret);
> > - return ret;
> > - }
> > -
> > - return 0;
> > -}
> > -
> > -static struct regulator *tsl2772_get_regulator(struct tsl2772_chip *chip,
> > -char *name)
> > -{
> > - struct regulator *regulator;
> > - int ret;
> > -
> > - regulator = devm_regulator_get(&chip->client->dev, name);
> > - if (IS_ERR(regulator)) {
> > - if (PTR_ERR(regulator) != -EPROBE_DEFER)
> > - dev_err(&chip->client->dev,
> > - "Failed to get %s regulator %d\n",
> > - name, (int)PTR_ERR(regulator));
> > -
> > - return regulator;
> > - }
> > -
> > - ret = tsl2772_enable_regulator(chip, regulator);
> > - if (ret < 0)
> > - return ERR_PTR(ret);
> > -
> > - return regulator;
> > + regulator_bulk_disable(ARRAY_SIZE(chip->reg), chip->reg);
> >  }
> >
> >  static int tsl2772_chip_on(struct iio_dev *indio_dev)
> > @@ -1804,14 +1770,21 @@ static int tsl2772_probe(struct i2c_client *clientp,
> >   chip->client = clientp;
> >   i2c_set_clientdata(clientp, indio_dev);
> >
> > - chip->vddio_supply = tsl2772_get_regulator(chip, "vddio");
> > - if (IS_ERR(chip->vddio_supply))
> > - return PTR_ERR(chip->vddio_supply);
> > + chip->reg[TSL2772_SUPPLY_VDD].supply = "vdd";
> > + chip->reg[TSL2772_SUPPLY_VDDIO].supply = "vddio";
> >
> > - chip->vdd_supply = tsl2772_get_regulator(chip, "vdd");
> > - if (IS_ERR(chip->vdd_supply)) {
> > - regulator_disable(chip->vddio_supply);
> > - return PTR_ERR(chip->vdd_supply);
> > + ret = devm_regulator_bulk_get(&clientp->dev, ARRAY_SIZE(chip->reg),
> > + chip->reg);
>
> This needs to be aligned with devm_regulator_bulk_get, not ARRAY_SIZE.
>
> > + if (ret < 0) {
> > + if (ret != -EPROBE_DEFER)
> > + dev_err(&clientp->dev, "Failed to get regulators: 
> > %d\n", ret);
>
> Add newline.
>
> Brian

Re: [PATCH v3 2/2] iio: tsl2772: Use regulator_bulk_() APIs

[Brian Masney]

Hi Chuhong,

On Wed, Jul 31, 2019 at 11:04:23AM +0800, Chuhong Yuan wrote:
> Use regulator_bulk_() APIs to shrink driver size.
> 
> Signed-off-by: Chuhong Yuan 

Just a few minor nitpicks below. Overall, this is looking nice.

> ---
> Changes in v3:
>   - Split v2 into two patches.
>   - Add dev_err to log error messages.
>   - Add a check for EPROBE_DEFER.
> 
>  drivers/iio/light/tsl2772.c | 82 +++--
>  1 file changed, 24 insertions(+), 58 deletions(-)
> 
> diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
> index f1134f183be7..fd6d44297dba 100644
> --- a/drivers/iio/light/tsl2772.c
> +++ b/drivers/iio/light/tsl2772.c
> @@ -134,6 +134,12 @@ enum {
>   TSL2772_CHIP_SUSPENDED = 2
>  };
>  
> +enum {
> + TSL2772_SUPPLY_VDD = 0,
> + TSL2772_SUPPLY_VDDIO = 1,
> + TSL2772_NUM_SUPPLIES = 2
> +};
> +
>  /* Per-device data */
>  struct tsl2772_als_info {
>   u16 als_ch0;
> @@ -161,8 +167,7 @@ struct tsl2772_chip {
>   struct mutex prox_mutex;
>   struct mutex als_mutex;
>   struct i2c_client *client;
> - struct regulator *vdd_supply;
> - struct regulator *vddio_supply;
> + struct regulator_bulk_data reg[TSL2772_NUM_SUPPLIES];

I prefer that this was named something other than 'reg'. Maybe
'supplies'? I know that there are a few other drivers in IIO that use
this name.

>   u16 prox_data;
>   struct tsl2772_als_info als_cur_info;
>   struct tsl2772_settings settings;
> @@ -697,46 +702,7 @@ static void tsl2772_disable_regulators_action(void 
> *_data)
>  {
>   struct tsl2772_chip *chip = _data;
>  
> - regulator_disable(chip->vdd_supply);
> - regulator_disable(chip->vddio_supply);
> -}
> -
> -static int tsl2772_enable_regulator(struct tsl2772_chip *chip,
> - struct regulator *regulator)
> -{
> - int ret;
> -
> - ret = regulator_enable(regulator);
> - if (ret < 0) {
> - dev_err(&chip->client->dev, "Failed to enable regulator: %d\n",
> - ret);
> - return ret;
> - }
> -
> - return 0;
> -}
> -
> -static struct regulator *tsl2772_get_regulator(struct tsl2772_chip *chip,
> -char *name)
> -{
> - struct regulator *regulator;
> - int ret;
> -
> - regulator = devm_regulator_get(&chip->client->dev, name);
> - if (IS_ERR(regulator)) {
> - if (PTR_ERR(regulator) != -EPROBE_DEFER)
> - dev_err(&chip->client->dev,
> - "Failed to get %s regulator %d\n",
> - name, (int)PTR_ERR(regulator));
> -
> - return regulator;
> - }
> -
> - ret = tsl2772_enable_regulator(chip, regulator);
> - if (ret < 0)
> - return ERR_PTR(ret);
> -
> - return regulator;
> + regulator_bulk_disable(ARRAY_SIZE(chip->reg), chip->reg);
>  }
>  
>  static int tsl2772_chip_on(struct iio_dev *indio_dev)
> @@ -1804,14 +1770,21 @@ static int tsl2772_probe(struct i2c_client *clientp,
>   chip->client = clientp;
>   i2c_set_clientdata(clientp, indio_dev);
>  
> - chip->vddio_supply = tsl2772_get_regulator(chip, "vddio");
> - if (IS_ERR(chip->vddio_supply))
> - return PTR_ERR(chip->vddio_supply);
> + chip->reg[TSL2772_SUPPLY_VDD].supply = "vdd";
> + chip->reg[TSL2772_SUPPLY_VDDIO].supply = "vddio";
>  
> - chip->vdd_supply = tsl2772_get_regulator(chip, "vdd");
> - if (IS_ERR(chip->vdd_supply)) {
> - regulator_disable(chip->vddio_supply);
> - return PTR_ERR(chip->vdd_supply);
> + ret = devm_regulator_bulk_get(&clientp->dev, ARRAY_SIZE(chip->reg),
> + chip->reg);

This needs to be aligned with devm_regulator_bulk_get, not ARRAY_SIZE.

> + if (ret < 0) {
> + if (ret != -EPROBE_DEFER)
> + dev_err(&clientp->dev, "Failed to get regulators: 
> %d\n", ret);

Add newline.

Brian

[PATCH v3 2/2] iio: tsl2772: Use regulator_bulk_() APIs

[Chuhong Yuan]

Use regulator_bulk_() APIs to shrink driver size.

Signed-off-by: Chuhong Yuan 
---
Changes in v3:
  - Split v2 into two patches.
  - Add dev_err to log error messages.
  - Add a check for EPROBE_DEFER.

 drivers/iio/light/tsl2772.c | 82 +++--
 1 file changed, 24 insertions(+), 58 deletions(-)

diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
index f1134f183be7..fd6d44297dba 100644
--- a/drivers/iio/light/tsl2772.c
+++ b/drivers/iio/light/tsl2772.c
@@ -134,6 +134,12 @@ enum {
TSL2772_CHIP_SUSPENDED = 2
 };
 
+enum {
+   TSL2772_SUPPLY_VDD = 0,
+   TSL2772_SUPPLY_VDDIO = 1,
+   TSL2772_NUM_SUPPLIES = 2
+};
+
 /* Per-device data */
 struct tsl2772_als_info {
u16 als_ch0;
@@ -161,8 +167,7 @@ struct tsl2772_chip {
struct mutex prox_mutex;
struct mutex als_mutex;
struct i2c_client *client;
-   struct regulator *vdd_supply;
-   struct regulator *vddio_supply;
+   struct regulator_bulk_data reg[TSL2772_NUM_SUPPLIES];
u16 prox_data;
struct tsl2772_als_info als_cur_info;
struct tsl2772_settings settings;
@@ -697,46 +702,7 @@ static void tsl2772_disable_regulators_action(void *_data)
 {
struct tsl2772_chip *chip = _data;
 
-   regulator_disable(chip->vdd_supply);
-   regulator_disable(chip->vddio_supply);
-}
-
-static int tsl2772_enable_regulator(struct tsl2772_chip *chip,
-   struct regulator *regulator)
-{
-   int ret;
-
-   ret = regulator_enable(regulator);
-   if (ret < 0) {
-   dev_err(&chip->client->dev, "Failed to enable regulator: %d\n",
-   ret);
-   return ret;
-   }
-
-   return 0;
-}
-
-static struct regulator *tsl2772_get_regulator(struct tsl2772_chip *chip,
-  char *name)
-{
-   struct regulator *regulator;
-   int ret;
-
-   regulator = devm_regulator_get(&chip->client->dev, name);
-   if (IS_ERR(regulator)) {
-   if (PTR_ERR(regulator) != -EPROBE_DEFER)
-   dev_err(&chip->client->dev,
-   "Failed to get %s regulator %d\n",
-   name, (int)PTR_ERR(regulator));
-
-   return regulator;
-   }
-
-   ret = tsl2772_enable_regulator(chip, regulator);
-   if (ret < 0)
-   return ERR_PTR(ret);
-
-   return regulator;
+   regulator_bulk_disable(ARRAY_SIZE(chip->reg), chip->reg);
 }
 
 static int tsl2772_chip_on(struct iio_dev *indio_dev)
@@ -1804,14 +1770,21 @@ static int tsl2772_probe(struct i2c_client *clientp,
chip->client = clientp;
i2c_set_clientdata(clientp, indio_dev);
 
-   chip->vddio_supply = tsl2772_get_regulator(chip, "vddio");
-   if (IS_ERR(chip->vddio_supply))
-   return PTR_ERR(chip->vddio_supply);
+   chip->reg[TSL2772_SUPPLY_VDD].supply = "vdd";
+   chip->reg[TSL2772_SUPPLY_VDDIO].supply = "vddio";
 
-   chip->vdd_supply = tsl2772_get_regulator(chip, "vdd");
-   if (IS_ERR(chip->vdd_supply)) {
-   regulator_disable(chip->vddio_supply);
-   return PTR_ERR(chip->vdd_supply);
+   ret = devm_regulator_bulk_get(&clientp->dev, ARRAY_SIZE(chip->reg),
+   chip->reg);
+   if (ret < 0) {
+   if (ret != -EPROBE_DEFER)
+   dev_err(&clientp->dev, "Failed to get regulators: 
%d\n", ret);
+   return ret;
+   }
+
+   ret = regulator_bulk_enable(ARRAY_SIZE(chip->reg), chip->reg);
+   if (ret < 0) {
+   dev_err(&clientp->dev, "Failed to enable regulators: %d\n", 
ret);
+   return ret;
}
 
ret = devm_add_action_or_reset(&clientp->dev,
@@ -1901,8 +1874,7 @@ static int tsl2772_suspend(struct device *dev)
int ret;
 
ret = tsl2772_chip_off(indio_dev);
-   regulator_disable(chip->vdd_supply);
-   regulator_disable(chip->vddio_supply);
+   regulator_bulk_disable(ARRAY_SIZE(chip->reg), chip->reg);
 
return ret;
 }
@@ -1913,16 +1885,10 @@ static int tsl2772_resume(struct device *dev)
struct tsl2772_chip *chip = iio_priv(indio_dev);
int ret;
 
-   ret = tsl2772_enable_regulator(chip, chip->vddio_supply);
+   ret = regulator_bulk_enable(ARRAY_SIZE(chip->reg), chip->reg);
if (ret < 0)
return ret;
 
-   ret = tsl2772_enable_regulator(chip, chip->vdd_supply);
-   if (ret < 0) {
-   regulator_disable(chip->vddio_supply);
-   return ret;
-   }
-
usleep_range(TSL2772_BOOT_MIN_SLEEP_TIME, TSL2772_BOOT_MAX_SLEEP_TIME);
 
return tsl2772_chip_on(indio_dev);
-- 
2.20.1