[v6,02/11] firmware: raspberrypi: Introduce devm_rpi_firmware_get()
diff mbox series

Message ID 20201211164801.7838-3-nsaenzjulienne@suse.de
State New, archived
Headers show
Series
  • Raspberry Pi PoE HAT fan support
Related show

Commit Message

Nicolas Saenz Julienne Dec. 11, 2020, 4:47 p.m. UTC
It'll simplify the firmware handling for most consumers.

Suggested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
---

Changes since v4:
 - Rearrange function calls for clarity, same functionality

Changes since v2:
- Create devm_rpi_firmware_get()

 drivers/firmware/raspberrypi.c             | 29 ++++++++++++++++++++++
 include/soc/bcm2835/raspberrypi-firmware.h |  8 ++++++
 2 files changed, 37 insertions(+)

Comments

Bartosz Golaszewski Dec. 16, 2020, 10:35 a.m. UTC | #1
On Fri, Dec 11, 2020 at 5:48 PM Nicolas Saenz Julienne
<nsaenzjulienne@suse.de> wrote:
>
> It'll simplify the firmware handling for most consumers.
>
> Suggested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
> ---
>
> Changes since v4:
>  - Rearrange function calls for clarity, same functionality
>
> Changes since v2:
> - Create devm_rpi_firmware_get()
>
>  drivers/firmware/raspberrypi.c             | 29 ++++++++++++++++++++++
>  include/soc/bcm2835/raspberrypi-firmware.h |  8 ++++++
>  2 files changed, 37 insertions(+)
>
> diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
> index b65e4c495772..250e01680742 100644
> --- a/drivers/firmware/raspberrypi.c
> +++ b/drivers/firmware/raspberrypi.c
> @@ -243,6 +243,13 @@ void rpi_firmware_put(struct rpi_firmware *fw)
>  }
>  EXPORT_SYMBOL_GPL(rpi_firmware_put);
>
> +static void devm_rpi_firmware_put(void *data)
> +{
> +       struct rpi_firmware *fw = data;
> +
> +       rpi_firmware_put(fw);
> +}
> +
>  static int rpi_firmware_probe(struct platform_device *pdev)
>  {
>         struct device *dev = &pdev->dev;
> @@ -331,6 +338,28 @@ struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
>  }
>  EXPORT_SYMBOL_GPL(rpi_firmware_get);
>
> +/**
> + * devm_rpi_firmware_get - Get pointer to rpi_firmware structure.
> + * @firmware_node:    Pointer to the firmware Device Tree node.
> + *
> + * Returns NULL is the firmware device is not ready.
> + */
> +struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
> +                                          struct device_node *firmware_node)
> +{
> +       struct rpi_firmware *fw;
> +
> +       fw = rpi_firmware_get(firmware_node);
> +       if (!fw)
> +               return NULL;
> +
> +       if (devm_add_action_or_reset(dev, devm_rpi_firmware_put, fw))
> +               return NULL;
> +
> +       return fw;
> +}
> +EXPORT_SYMBOL_GPL(devm_rpi_firmware_get);
> +
>  static const struct of_device_id rpi_firmware_of_match[] = {
>         { .compatible = "raspberrypi,bcm2835-firmware", },
>         {},
> diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h
> index fdfef7fe40df..73ad784fca96 100644
> --- a/include/soc/bcm2835/raspberrypi-firmware.h
> +++ b/include/soc/bcm2835/raspberrypi-firmware.h
> @@ -142,6 +142,8 @@ int rpi_firmware_property_list(struct rpi_firmware *fw,
>                                void *data, size_t tag_size);
>  void rpi_firmware_put(struct rpi_firmware *fw);
>  struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node);
> +struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
> +                                          struct device_node *firmware_node);
>  #else
>  static inline int rpi_firmware_property(struct rpi_firmware *fw, u32 tag,
>                                         void *data, size_t len)
> @@ -160,6 +162,12 @@ static inline struct rpi_firmware *rpi_firmware_get(struct device_node *firmware
>  {
>         return NULL;
>  }
> +
> +static inline struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
> +                                       struct device_node *firmware_node)
> +{
> +       return NULL;
> +}
>  #endif
>
>  #endif /* __SOC_RASPBERRY_FIRMWARE_H__ */
> --
> 2.29.2
>

Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Nicolas Saenz Julienne Dec. 16, 2020, 10:37 a.m. UTC | #2
On Wed, 2020-12-16 at 11:35 +0100, Bartosz Golaszewski wrote:
> On Fri, Dec 11, 2020 at 5:48 PM Nicolas Saenz Julienne
> <nsaenzjulienne@suse.de> wrote:
> > 
> > It'll simplify the firmware handling for most consumers.
> > 
> > Suggested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> > Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
> > ---
> > 
> > Changes since v4:
> >  - Rearrange function calls for clarity, same functionality
> > 
> > Changes since v2:
> > - Create devm_rpi_firmware_get()
> > 
> >  drivers/firmware/raspberrypi.c             | 29 ++++++++++++++++++++++
> >  include/soc/bcm2835/raspberrypi-firmware.h |  8 ++++++
> >  2 files changed, 37 insertions(+)
> > 
> > diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
> > index b65e4c495772..250e01680742 100644
> > --- a/drivers/firmware/raspberrypi.c
> > +++ b/drivers/firmware/raspberrypi.c
> > @@ -243,6 +243,13 @@ void rpi_firmware_put(struct rpi_firmware *fw)
> >  }
> >  EXPORT_SYMBOL_GPL(rpi_firmware_put);
> > 
> > +static void devm_rpi_firmware_put(void *data)
> > +{
> > +       struct rpi_firmware *fw = data;
> > +
> > +       rpi_firmware_put(fw);
> > +}
> > +
> >  static int rpi_firmware_probe(struct platform_device *pdev)
> >  {
> >         struct device *dev = &pdev->dev;
> > @@ -331,6 +338,28 @@ struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
> >  }
> >  EXPORT_SYMBOL_GPL(rpi_firmware_get);
> > 
> > +/**
> > + * devm_rpi_firmware_get - Get pointer to rpi_firmware structure.
> > + * @firmware_node:    Pointer to the firmware Device Tree node.
> > + *
> > + * Returns NULL is the firmware device is not ready.
> > + */
> > +struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
> > +                                          struct device_node *firmware_node)
> > +{
> > +       struct rpi_firmware *fw;
> > +
> > +       fw = rpi_firmware_get(firmware_node);
> > +       if (!fw)
> > +               return NULL;
> > +
> > +       if (devm_add_action_or_reset(dev, devm_rpi_firmware_put, fw))
> > +               return NULL;
> > +
> > +       return fw;
> > +}
> > +EXPORT_SYMBOL_GPL(devm_rpi_firmware_get);
> > +
> >  static const struct of_device_id rpi_firmware_of_match[] = {
> >         { .compatible = "raspberrypi,bcm2835-firmware", },
> >         {},
> > diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h
> > index fdfef7fe40df..73ad784fca96 100644
> > --- a/include/soc/bcm2835/raspberrypi-firmware.h
> > +++ b/include/soc/bcm2835/raspberrypi-firmware.h
> > @@ -142,6 +142,8 @@ int rpi_firmware_property_list(struct rpi_firmware *fw,
> >                                void *data, size_t tag_size);
> >  void rpi_firmware_put(struct rpi_firmware *fw);
> >  struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node);
> > +struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
> > +                                          struct device_node *firmware_node);
> >  #else
> >  static inline int rpi_firmware_property(struct rpi_firmware *fw, u32 tag,
> >                                         void *data, size_t len)
> > @@ -160,6 +162,12 @@ static inline struct rpi_firmware *rpi_firmware_get(struct device_node *firmware
> >  {
> >         return NULL;
> >  }
> > +
> > +static inline struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
> > +                                       struct device_node *firmware_node)
> > +{
> > +       return NULL;
> > +}
> >  #endif
> > 
> >  #endif /* __SOC_RASPBERRY_FIRMWARE_H__ */
> > --
> > 2.29.2
> > 
> 
> Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

Thanks for the reviews!

Patch
diff mbox series

diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
index b65e4c495772..250e01680742 100644
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -243,6 +243,13 @@  void rpi_firmware_put(struct rpi_firmware *fw)
 }
 EXPORT_SYMBOL_GPL(rpi_firmware_put);
 
+static void devm_rpi_firmware_put(void *data)
+{
+	struct rpi_firmware *fw = data;
+
+	rpi_firmware_put(fw);
+}
+
 static int rpi_firmware_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -331,6 +338,28 @@  struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
 }
 EXPORT_SYMBOL_GPL(rpi_firmware_get);
 
+/**
+ * devm_rpi_firmware_get - Get pointer to rpi_firmware structure.
+ * @firmware_node:    Pointer to the firmware Device Tree node.
+ *
+ * Returns NULL is the firmware device is not ready.
+ */
+struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
+					   struct device_node *firmware_node)
+{
+	struct rpi_firmware *fw;
+
+	fw = rpi_firmware_get(firmware_node);
+	if (!fw)
+		return NULL;
+
+	if (devm_add_action_or_reset(dev, devm_rpi_firmware_put, fw))
+		return NULL;
+
+	return fw;
+}
+EXPORT_SYMBOL_GPL(devm_rpi_firmware_get);
+
 static const struct of_device_id rpi_firmware_of_match[] = {
 	{ .compatible = "raspberrypi,bcm2835-firmware", },
 	{},
diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h
index fdfef7fe40df..73ad784fca96 100644
--- a/include/soc/bcm2835/raspberrypi-firmware.h
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -142,6 +142,8 @@  int rpi_firmware_property_list(struct rpi_firmware *fw,
 			       void *data, size_t tag_size);
 void rpi_firmware_put(struct rpi_firmware *fw);
 struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node);
+struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
+					   struct device_node *firmware_node);
 #else
 static inline int rpi_firmware_property(struct rpi_firmware *fw, u32 tag,
 					void *data, size_t len)
@@ -160,6 +162,12 @@  static inline struct rpi_firmware *rpi_firmware_get(struct device_node *firmware
 {
 	return NULL;
 }
+
+static inline struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
+					struct device_node *firmware_node)
+{
+	return NULL;
+}
 #endif
 
 #endif /* __SOC_RASPBERRY_FIRMWARE_H__ */