[PATCH v2 4/5] power: supply: core: convert to fwnnode

Sebastian Reichel posted 5 patches 9 months, 2 weeks ago
[PATCH v2 4/5] power: supply: core: convert to fwnnode
Posted by Sebastian Reichel 9 months, 2 weeks ago
Replace any DT specific code with fwnode in the power-supply
core.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
 drivers/power/supply/bq2415x_charger.c   |  2 +-
 drivers/power/supply/power_supply_core.c | 65 ++++++++++++++++----------------
 include/linux/power_supply.h             |  2 +-
 3 files changed, 34 insertions(+), 35 deletions(-)

diff --git a/drivers/power/supply/bq2415x_charger.c b/drivers/power/supply/bq2415x_charger.c
index 9e3b9181ee76a4f473228bba022917677acce256..1ecbca510bba99ee7abcda33a719035adfceeb5f 100644
--- a/drivers/power/supply/bq2415x_charger.c
+++ b/drivers/power/supply/bq2415x_charger.c
@@ -1674,7 +1674,7 @@ static int bq2415x_probe(struct i2c_client *client)
 	/* Query for initial reported_mode and set it */
 	if (bq->nb.notifier_call) {
 		if (np) {
-			notify_psy = power_supply_get_by_phandle(np,
+			notify_psy = power_supply_get_by_phandle(of_fwnode_handle(np),
 						"ti,usb-charger-detection");
 			if (IS_ERR(notify_psy))
 				notify_psy = NULL;
diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c
index a8d1fe66e2486a833ccaa3ed77b861c6e52c5760..1d53ceaa8fd161e7e72b90befabb9380393c99f2 100644
--- a/drivers/power/supply/power_supply_core.c
+++ b/drivers/power/supply/power_supply_core.c
@@ -18,7 +18,6 @@
 #include <linux/device.h>
 #include <linux/notifier.h>
 #include <linux/err.h>
-#include <linux/of.h>
 #include <linux/power_supply.h>
 #include <linux/property.h>
 #include <linux/thermal.h>
@@ -196,24 +195,24 @@ static int __power_supply_populate_supplied_from(struct power_supply *epsy,
 						 void *data)
 {
 	struct power_supply *psy = data;
-	struct device_node *np;
+	struct fwnode_handle *np;
 	int i = 0;
 
 	do {
-		np = of_parse_phandle(psy->dev.of_node, "power-supplies", i++);
-		if (!np)
+		np = fwnode_find_reference(psy->dev.fwnode, "power-supplies", i++);
+		if (IS_ERR(np))
 			break;
 
-		if (np == epsy->dev.of_node) {
+		if (np == epsy->dev.fwnode) {
 			dev_dbg(&psy->dev, "%s: Found supply : %s\n",
 				psy->desc->name, epsy->desc->name);
 			psy->supplied_from[i-1] = (char *)epsy->desc->name;
 			psy->num_supplies++;
-			of_node_put(np);
+			fwnode_handle_put(np);
 			break;
 		}
-		of_node_put(np);
-	} while (np);
+		fwnode_handle_put(np);
+	} while (!IS_ERR(np));
 
 	return 0;
 }
@@ -232,16 +231,16 @@ static int power_supply_populate_supplied_from(struct power_supply *psy)
 static int  __power_supply_find_supply_from_node(struct power_supply *epsy,
 						 void *data)
 {
-	struct device_node *np = data;
+	struct fwnode_handle *fwnode = data;
 
 	/* returning non-zero breaks out of power_supply_for_each_psy loop */
-	if (epsy->dev.of_node == np)
+	if (epsy->dev.fwnode == fwnode)
 		return 1;
 
 	return 0;
 }
 
-static int power_supply_find_supply_from_node(struct device_node *supply_node)
+static int power_supply_find_supply_from_fwnode(struct fwnode_handle *supply_node)
 {
 	int error;
 
@@ -249,7 +248,7 @@ static int power_supply_find_supply_from_node(struct device_node *supply_node)
 	 * power_supply_for_each_psy() either returns its own errors or values
 	 * returned by __power_supply_find_supply_from_node().
 	 *
-	 * __power_supply_find_supply_from_node() will return 0 (no match)
+	 * __power_supply_find_supply_from_fwnode() will return 0 (no match)
 	 * or 1 (match).
 	 *
 	 * We return 0 if power_supply_for_each_psy() returned 1, -EPROBE_DEFER if
@@ -262,7 +261,7 @@ static int power_supply_find_supply_from_node(struct device_node *supply_node)
 
 static int power_supply_check_supplies(struct power_supply *psy)
 {
-	struct device_node *np;
+	struct fwnode_handle *np;
 	int cnt = 0;
 
 	/* If there is already a list honor it */
@@ -270,24 +269,24 @@ static int power_supply_check_supplies(struct power_supply *psy)
 		return 0;
 
 	/* No device node found, nothing to do */
-	if (!psy->dev.of_node)
+	if (!psy->dev.fwnode)
 		return 0;
 
 	do {
 		int ret;
 
-		np = of_parse_phandle(psy->dev.of_node, "power-supplies", cnt++);
-		if (!np)
+		np = fwnode_find_reference(psy->dev.fwnode, "power-supplies", cnt++);
+		if (IS_ERR(np))
 			break;
 
-		ret = power_supply_find_supply_from_node(np);
-		of_node_put(np);
+		ret = power_supply_find_supply_from_fwnode(np);
+		fwnode_handle_put(np);
 
 		if (ret) {
 			dev_dbg(&psy->dev, "Failed to find supply!\n");
 			return ret;
 		}
-	} while (np);
+	} while (!IS_ERR(np));
 
 	/* Missing valid "power-supplies" entries */
 	if (cnt == 1)
@@ -498,14 +497,14 @@ void power_supply_put(struct power_supply *psy)
 EXPORT_SYMBOL_GPL(power_supply_put);
 
 #ifdef CONFIG_OF
-static int power_supply_match_device_node(struct device *dev, const void *data)
+static int power_supply_match_device_fwnode(struct device *dev, const void *data)
 {
-	return dev->parent && dev->parent->of_node == data;
+	return dev->parent && dev_fwnode(dev->parent) == data;
 }
 
 /**
  * power_supply_get_by_phandle() - Search for a power supply and returns its ref
- * @np: Pointer to device node holding phandle property
+ * @fwnode: Pointer to fwnode holding phandle property
  * @property: Name of property holding a power supply name
  *
  * If power supply was found, it increases reference count for the
@@ -515,21 +514,21 @@ static int power_supply_match_device_node(struct device *dev, const void *data)
  * Return: On success returns a reference to a power supply with
  * matching name equals to value under @property, NULL or ERR_PTR otherwise.
  */
-struct power_supply *power_supply_get_by_phandle(struct device_node *np,
-							const char *property)
+struct power_supply *power_supply_get_by_phandle(struct fwnode_handle *fwnode,
+						 const char *property)
 {
-	struct device_node *power_supply_np;
+	struct fwnode_handle *power_supply_fwnode;
 	struct power_supply *psy = NULL;
 	struct device *dev;
 
-	power_supply_np = of_parse_phandle(np, property, 0);
-	if (!power_supply_np)
-		return ERR_PTR(-ENODEV);
+	power_supply_fwnode = fwnode_find_reference(fwnode, property, 0);
+	if (IS_ERR(power_supply_fwnode))
+		return ERR_CAST(power_supply_fwnode);
 
-	dev = class_find_device(&power_supply_class, NULL, power_supply_np,
-				power_supply_match_device_node);
+	dev = class_find_device(&power_supply_class, NULL, power_supply_fwnode,
+				power_supply_match_device_fwnode);
 
-	of_node_put(power_supply_np);
+	fwnode_handle_put(power_supply_fwnode);
 
 	if (dev) {
 		psy = dev_to_psy(dev);
@@ -561,14 +560,14 @@ struct power_supply *devm_power_supply_get_by_phandle(struct device *dev,
 {
 	struct power_supply **ptr, *psy;
 
-	if (!dev->of_node)
+	if (!dev_fwnode(dev))
 		return ERR_PTR(-ENODEV);
 
 	ptr = devres_alloc(devm_power_supply_put, sizeof(*ptr), GFP_KERNEL);
 	if (!ptr)
 		return ERR_PTR(-ENOMEM);
 
-	psy = power_supply_get_by_phandle(dev->of_node, property);
+	psy = power_supply_get_by_phandle(dev_fwnode(dev), property);
 	if (IS_ERR_OR_NULL(psy)) {
 		devres_free(ptr);
 	} else {
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index b6eb31a23c878aa9ed8ad7bcb02a13721354e1cb..c95f098374cbdeafe8cddb52da3903f4f0e0f0fc 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -805,7 +805,7 @@ static inline struct power_supply *power_supply_get_by_name(const char *name)
 { return NULL; }
 #endif
 #ifdef CONFIG_OF
-extern struct power_supply *power_supply_get_by_phandle(struct device_node *np,
+extern struct power_supply *power_supply_get_by_phandle(struct fwnode_handle *fwnode,
 							const char *property);
 extern struct power_supply *devm_power_supply_get_by_phandle(
 				    struct device *dev, const char *property);

-- 
2.47.2
Re: [PATCH v2 4/5] power: supply: core: convert to fwnnode
Posted by Hans de Goede 8 months ago
Hi, 

On 30-Apr-25 12:54 AM, Sebastian Reichel wrote:
> Replace any DT specific code with fwnode in the power-supply
> core.
> 
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hansg@kernel.org>

Regards,

Hans



> ---
>  drivers/power/supply/bq2415x_charger.c   |  2 +-
>  drivers/power/supply/power_supply_core.c | 65 ++++++++++++++++----------------
>  include/linux/power_supply.h             |  2 +-
>  3 files changed, 34 insertions(+), 35 deletions(-)
> 
> diff --git a/drivers/power/supply/bq2415x_charger.c b/drivers/power/supply/bq2415x_charger.c
> index 9e3b9181ee76a4f473228bba022917677acce256..1ecbca510bba99ee7abcda33a719035adfceeb5f 100644
> --- a/drivers/power/supply/bq2415x_charger.c
> +++ b/drivers/power/supply/bq2415x_charger.c
> @@ -1674,7 +1674,7 @@ static int bq2415x_probe(struct i2c_client *client)
>  	/* Query for initial reported_mode and set it */
>  	if (bq->nb.notifier_call) {
>  		if (np) {
> -			notify_psy = power_supply_get_by_phandle(np,
> +			notify_psy = power_supply_get_by_phandle(of_fwnode_handle(np),
>  						"ti,usb-charger-detection");
>  			if (IS_ERR(notify_psy))
>  				notify_psy = NULL;
> diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c
> index a8d1fe66e2486a833ccaa3ed77b861c6e52c5760..1d53ceaa8fd161e7e72b90befabb9380393c99f2 100644
> --- a/drivers/power/supply/power_supply_core.c
> +++ b/drivers/power/supply/power_supply_core.c
> @@ -18,7 +18,6 @@
>  #include <linux/device.h>
>  #include <linux/notifier.h>
>  #include <linux/err.h>
> -#include <linux/of.h>
>  #include <linux/power_supply.h>
>  #include <linux/property.h>
>  #include <linux/thermal.h>
> @@ -196,24 +195,24 @@ static int __power_supply_populate_supplied_from(struct power_supply *epsy,
>  						 void *data)
>  {
>  	struct power_supply *psy = data;
> -	struct device_node *np;
> +	struct fwnode_handle *np;
>  	int i = 0;
>  
>  	do {
> -		np = of_parse_phandle(psy->dev.of_node, "power-supplies", i++);
> -		if (!np)
> +		np = fwnode_find_reference(psy->dev.fwnode, "power-supplies", i++);
> +		if (IS_ERR(np))
>  			break;
>  
> -		if (np == epsy->dev.of_node) {
> +		if (np == epsy->dev.fwnode) {
>  			dev_dbg(&psy->dev, "%s: Found supply : %s\n",
>  				psy->desc->name, epsy->desc->name);
>  			psy->supplied_from[i-1] = (char *)epsy->desc->name;
>  			psy->num_supplies++;
> -			of_node_put(np);
> +			fwnode_handle_put(np);
>  			break;
>  		}
> -		of_node_put(np);
> -	} while (np);
> +		fwnode_handle_put(np);
> +	} while (!IS_ERR(np));
>  
>  	return 0;
>  }
> @@ -232,16 +231,16 @@ static int power_supply_populate_supplied_from(struct power_supply *psy)
>  static int  __power_supply_find_supply_from_node(struct power_supply *epsy,
>  						 void *data)
>  {
> -	struct device_node *np = data;
> +	struct fwnode_handle *fwnode = data;
>  
>  	/* returning non-zero breaks out of power_supply_for_each_psy loop */
> -	if (epsy->dev.of_node == np)
> +	if (epsy->dev.fwnode == fwnode)
>  		return 1;
>  
>  	return 0;
>  }
>  
> -static int power_supply_find_supply_from_node(struct device_node *supply_node)
> +static int power_supply_find_supply_from_fwnode(struct fwnode_handle *supply_node)
>  {
>  	int error;
>  
> @@ -249,7 +248,7 @@ static int power_supply_find_supply_from_node(struct device_node *supply_node)
>  	 * power_supply_for_each_psy() either returns its own errors or values
>  	 * returned by __power_supply_find_supply_from_node().
>  	 *
> -	 * __power_supply_find_supply_from_node() will return 0 (no match)
> +	 * __power_supply_find_supply_from_fwnode() will return 0 (no match)
>  	 * or 1 (match).
>  	 *
>  	 * We return 0 if power_supply_for_each_psy() returned 1, -EPROBE_DEFER if
> @@ -262,7 +261,7 @@ static int power_supply_find_supply_from_node(struct device_node *supply_node)
>  
>  static int power_supply_check_supplies(struct power_supply *psy)
>  {
> -	struct device_node *np;
> +	struct fwnode_handle *np;
>  	int cnt = 0;
>  
>  	/* If there is already a list honor it */
> @@ -270,24 +269,24 @@ static int power_supply_check_supplies(struct power_supply *psy)
>  		return 0;
>  
>  	/* No device node found, nothing to do */
> -	if (!psy->dev.of_node)
> +	if (!psy->dev.fwnode)
>  		return 0;
>  
>  	do {
>  		int ret;
>  
> -		np = of_parse_phandle(psy->dev.of_node, "power-supplies", cnt++);
> -		if (!np)
> +		np = fwnode_find_reference(psy->dev.fwnode, "power-supplies", cnt++);
> +		if (IS_ERR(np))
>  			break;
>  
> -		ret = power_supply_find_supply_from_node(np);
> -		of_node_put(np);
> +		ret = power_supply_find_supply_from_fwnode(np);
> +		fwnode_handle_put(np);
>  
>  		if (ret) {
>  			dev_dbg(&psy->dev, "Failed to find supply!\n");
>  			return ret;
>  		}
> -	} while (np);
> +	} while (!IS_ERR(np));
>  
>  	/* Missing valid "power-supplies" entries */
>  	if (cnt == 1)
> @@ -498,14 +497,14 @@ void power_supply_put(struct power_supply *psy)
>  EXPORT_SYMBOL_GPL(power_supply_put);
>  
>  #ifdef CONFIG_OF
> -static int power_supply_match_device_node(struct device *dev, const void *data)
> +static int power_supply_match_device_fwnode(struct device *dev, const void *data)
>  {
> -	return dev->parent && dev->parent->of_node == data;
> +	return dev->parent && dev_fwnode(dev->parent) == data;
>  }
>  
>  /**
>   * power_supply_get_by_phandle() - Search for a power supply and returns its ref
> - * @np: Pointer to device node holding phandle property
> + * @fwnode: Pointer to fwnode holding phandle property
>   * @property: Name of property holding a power supply name
>   *
>   * If power supply was found, it increases reference count for the
> @@ -515,21 +514,21 @@ static int power_supply_match_device_node(struct device *dev, const void *data)
>   * Return: On success returns a reference to a power supply with
>   * matching name equals to value under @property, NULL or ERR_PTR otherwise.
>   */
> -struct power_supply *power_supply_get_by_phandle(struct device_node *np,
> -							const char *property)
> +struct power_supply *power_supply_get_by_phandle(struct fwnode_handle *fwnode,
> +						 const char *property)
>  {
> -	struct device_node *power_supply_np;
> +	struct fwnode_handle *power_supply_fwnode;
>  	struct power_supply *psy = NULL;
>  	struct device *dev;
>  
> -	power_supply_np = of_parse_phandle(np, property, 0);
> -	if (!power_supply_np)
> -		return ERR_PTR(-ENODEV);
> +	power_supply_fwnode = fwnode_find_reference(fwnode, property, 0);
> +	if (IS_ERR(power_supply_fwnode))
> +		return ERR_CAST(power_supply_fwnode);
>  
> -	dev = class_find_device(&power_supply_class, NULL, power_supply_np,
> -				power_supply_match_device_node);
> +	dev = class_find_device(&power_supply_class, NULL, power_supply_fwnode,
> +				power_supply_match_device_fwnode);
>  
> -	of_node_put(power_supply_np);
> +	fwnode_handle_put(power_supply_fwnode);
>  
>  	if (dev) {
>  		psy = dev_to_psy(dev);
> @@ -561,14 +560,14 @@ struct power_supply *devm_power_supply_get_by_phandle(struct device *dev,
>  {
>  	struct power_supply **ptr, *psy;
>  
> -	if (!dev->of_node)
> +	if (!dev_fwnode(dev))
>  		return ERR_PTR(-ENODEV);
>  
>  	ptr = devres_alloc(devm_power_supply_put, sizeof(*ptr), GFP_KERNEL);
>  	if (!ptr)
>  		return ERR_PTR(-ENOMEM);
>  
> -	psy = power_supply_get_by_phandle(dev->of_node, property);
> +	psy = power_supply_get_by_phandle(dev_fwnode(dev), property);
>  	if (IS_ERR_OR_NULL(psy)) {
>  		devres_free(ptr);
>  	} else {
> diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
> index b6eb31a23c878aa9ed8ad7bcb02a13721354e1cb..c95f098374cbdeafe8cddb52da3903f4f0e0f0fc 100644
> --- a/include/linux/power_supply.h
> +++ b/include/linux/power_supply.h
> @@ -805,7 +805,7 @@ static inline struct power_supply *power_supply_get_by_name(const char *name)
>  { return NULL; }
>  #endif
>  #ifdef CONFIG_OF
> -extern struct power_supply *power_supply_get_by_phandle(struct device_node *np,
> +extern struct power_supply *power_supply_get_by_phandle(struct fwnode_handle *fwnode,
>  							const char *property);
>  extern struct power_supply *devm_power_supply_get_by_phandle(
>  				    struct device *dev, const char *property);
>