diff mbox series

[v8,08/10] mfd: mt6360: Fix flow which is used to check ic exist

Message ID 20210517173314.140912-9-gene.chen.richtek@gmail.com (mailing list archive)
State New, archived
Headers show
Series mfd: mt6360: Merge different sub-devices I2C read/write | expand

Commit Message

Gene Chen May 17, 2021, 5:33 p.m. UTC 
From: Gene Chen <gene_chen@richtek.com>

Fix flow which is used to check ic exist.

Signed-off-by: Gene Chen <gene_chen@richtek.com>
Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
---
 drivers/mfd/mt6360-core.c | 32 +++++++++++++++++++++-----------
 1 file changed, 21 insertions(+), 11 deletions(-)

Comments

Fei Shao June 9, 2021, 10:02 a.m. UTC | #1 
On Tue, May 18, 2021 at 1:36 AM Gene Chen <gene.chen.richtek@gmail.com> wrote:
>
> From: Gene Chen <gene_chen@richtek.com>
>
> Fix flow which is used to check ic exist.
>
> Signed-off-by: Gene Chen <gene_chen@richtek.com>
> Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
> ---
>  drivers/mfd/mt6360-core.c | 32 +++++++++++++++++++++-----------
>  1 file changed, 21 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/mfd/mt6360-core.c b/drivers/mfd/mt6360-core.c
> index 50a170065a98..cdd99770f94a 100644
> --- a/drivers/mfd/mt6360-core.c
> +++ b/drivers/mfd/mt6360-core.c
> @@ -293,6 +293,25 @@ static const struct mfd_cell mt6360_devs[] = {
>                     NULL, 0, 0, "mediatek,mt6360-tcpc"),
>  };
>
> +static int mt6360_check_vendor_info(struct mt6360_ddata *ddata)
> +{
> +       u32 info;
> +       int ret;
> +
> +       ret = regmap_read(ddata->regmap, MT6360_PMU_DEV_INFO, &info);
> +       if (ret < 0)

A dev_err() to indicate the read info error? (it used to be there)

> +               return ret;
> +
> +       if ((info & CHIP_VEN_MASK) != CHIP_VEN_MT6360) {
> +               dev_err(ddata->dev, "Device not supported\n");
> +               return -ENODEV;
> +       }
> +
> +       ddata->chip_rev = info & CHIP_REV_MASK;
> +
> +       return 0;
> +}
> +
>  static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = {
>         MT6360_PMU_SLAVEID,
>         MT6360_PMIC_SLAVEID,
> @@ -303,7 +322,6 @@ static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = {
>  static int mt6360_probe(struct i2c_client *client)
>  {
>         struct mt6360_ddata *ddata;
> -       unsigned int reg_data;
>         int i, ret;
>
>         ddata = devm_kzalloc(&client->dev, sizeof(*ddata), GFP_KERNEL);
> @@ -319,17 +337,9 @@ static int mt6360_probe(struct i2c_client *client)
>                 return PTR_ERR(ddata->regmap);
>         }
>
> -       ret = regmap_read(ddata->regmap, MT6360_PMU_DEV_INFO, &reg_data);
> -       if (ret) {
> -               dev_err(&client->dev, "Device not found\n");
> +       ret = mt6360_check_vendor_info(ddata);
> +       if (ret)
>                 return ret;
> -       }
> -
> -       ddata->chip_rev = reg_data & CHIP_REV_MASK;
> -       if (ddata->chip_rev != CHIP_VEN_MT6360) {
> -               dev_err(&client->dev, "Device not supported\n");
> -               return -ENODEV;
> -       }
>
>         ret = devm_regmap_add_irq_chip(&client->dev, ddata->regmap, client->irq,
>                                        0, 0, &mt6360_irq_chip,
> --
> 2.25.1
>
>
> _______________________________________________
> Linux-mediatek mailing list
> Linux-mediatek@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-mediatek
Fei Shao June 9, 2021, 10:21 a.m. UTC | #2 
On Wed, Jun 9, 2021 at 6:02 PM Fei Shao <fshao@chromium.org> wrote:
>
> On Tue, May 18, 2021 at 1:36 AM Gene Chen <gene.chen.richtek@gmail.com> wrote:
> >
> > From: Gene Chen <gene_chen@richtek.com>
> >
> > Fix flow which is used to check ic exist.
> >
> > Signed-off-by: Gene Chen <gene_chen@richtek.com>
> > Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
> > ---
> >  drivers/mfd/mt6360-core.c | 32 +++++++++++++++++++++-----------
> >  1 file changed, 21 insertions(+), 11 deletions(-)
> >
> > diff --git a/drivers/mfd/mt6360-core.c b/drivers/mfd/mt6360-core.c
> > index 50a170065a98..cdd99770f94a 100644
> > --- a/drivers/mfd/mt6360-core.c
> > +++ b/drivers/mfd/mt6360-core.c
> > @@ -293,6 +293,25 @@ static const struct mfd_cell mt6360_devs[] = {
> >                     NULL, 0, 0, "mediatek,mt6360-tcpc"),
> >  };
> >
> > +static int mt6360_check_vendor_info(struct mt6360_ddata *ddata)
> > +{
> > +       u32 info;
> > +       int ret;
> > +
> > +       ret = regmap_read(ddata->regmap, MT6360_PMU_DEV_INFO, &info);
> > +       if (ret < 0)
>
> A dev_err() to indicate the read info error? (it used to be there)

Oops sorry I didn't realize that the patches are applied. Will send
another one for the minor fixes.


>
> > +               return ret;
> > +
> > +       if ((info & CHIP_VEN_MASK) != CHIP_VEN_MT6360) {
> > +               dev_err(ddata->dev, "Device not supported\n");
> > +               return -ENODEV;
> > +       }
> > +
> > +       ddata->chip_rev = info & CHIP_REV_MASK;
> > +
> > +       return 0;
> > +}
> > +
> >  static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = {
> >         MT6360_PMU_SLAVEID,
> >         MT6360_PMIC_SLAVEID,
> > @@ -303,7 +322,6 @@ static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = {
> >  static int mt6360_probe(struct i2c_client *client)
> >  {
> >         struct mt6360_ddata *ddata;
> > -       unsigned int reg_data;
> >         int i, ret;
> >
> >         ddata = devm_kzalloc(&client->dev, sizeof(*ddata), GFP_KERNEL);
> > @@ -319,17 +337,9 @@ static int mt6360_probe(struct i2c_client *client)
> >                 return PTR_ERR(ddata->regmap);
> >         }
> >
> > -       ret = regmap_read(ddata->regmap, MT6360_PMU_DEV_INFO, &reg_data);
> > -       if (ret) {
> > -               dev_err(&client->dev, "Device not found\n");
> > +       ret = mt6360_check_vendor_info(ddata);
> > +       if (ret)
> >                 return ret;
> > -       }
> > -
> > -       ddata->chip_rev = reg_data & CHIP_REV_MASK;
> > -       if (ddata->chip_rev != CHIP_VEN_MT6360) {
> > -               dev_err(&client->dev, "Device not supported\n");
> > -               return -ENODEV;
> > -       }
> >
> >         ret = devm_regmap_add_irq_chip(&client->dev, ddata->regmap, client->irq,
> >                                        0, 0, &mt6360_irq_chip,
> > --
> > 2.25.1
> >
> >
> > _______________________________________________
> > Linux-mediatek mailing list
> > Linux-mediatek@lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-mediatek
diff mbox series

Patch

diff --git a/drivers/mfd/mt6360-core.c b/drivers/mfd/mt6360-core.c
index 50a170065a98..cdd99770f94a 100644
--- a/drivers/mfd/mt6360-core.c
+++ b/drivers/mfd/mt6360-core.c
@@ -293,6 +293,25 @@  static const struct mfd_cell mt6360_devs[] = {
 		    NULL, 0, 0, "mediatek,mt6360-tcpc"),
 };
 
+static int mt6360_check_vendor_info(struct mt6360_ddata *ddata)
+{
+	u32 info;
+	int ret;
+
+	ret = regmap_read(ddata->regmap, MT6360_PMU_DEV_INFO, &info);
+	if (ret < 0)
+		return ret;
+
+	if ((info & CHIP_VEN_MASK) != CHIP_VEN_MT6360) {
+		dev_err(ddata->dev, "Device not supported\n");
+		return -ENODEV;
+	}
+
+	ddata->chip_rev = info & CHIP_REV_MASK;
+
+	return 0;
+}
+
 static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = {
 	MT6360_PMU_SLAVEID,
 	MT6360_PMIC_SLAVEID,
@@ -303,7 +322,6 @@  static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = {
 static int mt6360_probe(struct i2c_client *client)
 {
 	struct mt6360_ddata *ddata;
-	unsigned int reg_data;
 	int i, ret;
 
 	ddata = devm_kzalloc(&client->dev, sizeof(*ddata), GFP_KERNEL);
@@ -319,17 +337,9 @@  static int mt6360_probe(struct i2c_client *client)
 		return PTR_ERR(ddata->regmap);
 	}
 
-	ret = regmap_read(ddata->regmap, MT6360_PMU_DEV_INFO, &reg_data);
-	if (ret) {
-		dev_err(&client->dev, "Device not found\n");
+	ret = mt6360_check_vendor_info(ddata);
+	if (ret)
 		return ret;
-	}
-
-	ddata->chip_rev = reg_data & CHIP_REV_MASK;
-	if (ddata->chip_rev != CHIP_VEN_MT6360) {
-		dev_err(&client->dev, "Device not supported\n");
-		return -ENODEV;
-	}
 
 	ret = devm_regmap_add_irq_chip(&client->dev, ddata->regmap, client->irq,
 				       0, 0, &mt6360_irq_chip,