Commit 6c96f05c authored by Hans de Goede's avatar Hans de Goede Committed by Philipp Zabel
Browse files

reset: Make [of_]reset_control_get[_foo] functions wrappers 



With both the regular, _by_index and _optional variants we already have
quite a few variants of [of_]reset_control_get[_foo], the upcoming
addition of shared reset lines support makes this worse.

This commit changes all the variants into wrappers around common core
functions. For completeness sake this commit also adds a new
devm_get_reset_control_by_index wrapper.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent f55532a0

drivers/reset/core.c

+17 −67
Original line number Diff line number Diff line
@@ -136,18 +136,8 @@ int reset_control_status(struct reset_control *rstc) 
}

EXPORT_SYMBOL_GPL(reset_control_status);



/**

 * of_reset_control_get_by_index - Lookup and obtain a reference to a reset

 * controller by index.

 * @node: device to be reset by the controller

 * @index: index of the reset controller

 *

 * This is to be used to perform a list of resets for a device or power domain

 * in whatever order. Returns a struct reset_control or IS_ERR() condition

 * containing errno.

 */

struct reset_control *of_reset_control_get_by_index(struct device_node *node,

					   int index)

struct reset_control *__of_reset_control_get(struct device_node *node,

					     const char *id, int index)

{

	struct reset_control *rstc;

	struct reset_controller_dev *r, *rcdev;
@@ -155,6 +145,16 @@ struct reset_control *of_reset_control_get_by_index(struct device_node *node, 
	int rstc_id;

	int ret;



	if (!node)

		return ERR_PTR(-EINVAL);



	if (id) {

		index = of_property_match_string(node,

						 "reset-names", id);

		if (index < 0)

			return ERR_PTR(-ENOENT);

	}



	ret = of_parse_phandle_with_args(node, "resets", "#reset-cells",

					 index, &args);

	if (ret)
@@ -200,49 +200,7 @@ struct reset_control *of_reset_control_get_by_index(struct device_node *node, 


	return rstc;

}

EXPORT_SYMBOL_GPL(of_reset_control_get_by_index);



/**

 * of_reset_control_get - Lookup and obtain a reference to a reset controller.

 * @node: device to be reset by the controller

 * @id: reset line name

 *

 * Returns a struct reset_control or IS_ERR() condition containing errno.

 *

 * Use of id names is optional.

 */

struct reset_control *of_reset_control_get(struct device_node *node,

					   const char *id)

{

	int index = 0;



	if (id) {

		index = of_property_match_string(node,

						 "reset-names", id);

		if (index < 0)

			return ERR_PTR(-ENOENT);

	}

	return of_reset_control_get_by_index(node, index);

}

EXPORT_SYMBOL_GPL(of_reset_control_get);



/**

 * reset_control_get - Lookup and obtain a reference to a reset controller.

 * @dev: device to be reset by the controller

 * @id: reset line name

 *

 * Returns a struct reset_control or IS_ERR() condition containing errno.

 *

 * Use of id names is optional.

 */

struct reset_control *reset_control_get(struct device *dev, const char *id)

{

	if (!dev)

		return ERR_PTR(-EINVAL);



	return of_reset_control_get(dev->of_node, id);

}

EXPORT_SYMBOL_GPL(reset_control_get);

EXPORT_SYMBOL_GPL(__of_reset_control_get);



/**

 * reset_control_put - free the reset controller
@@ -264,16 +222,8 @@ static void devm_reset_control_release(struct device *dev, void *res) 
	reset_control_put(*(struct reset_control **)res);

}



/**

 * devm_reset_control_get - resource managed reset_control_get()

 * @dev: device to be reset by the controller

 * @id: reset line name

 *

 * Managed reset_control_get(). For reset controllers returned from this

 * function, reset_control_put() is called automatically on driver detach.

 * See reset_control_get() for more information.

 */

struct reset_control *devm_reset_control_get(struct device *dev, const char *id)

struct reset_control *__devm_reset_control_get(struct device *dev,

					       const char *id, int index)

{

	struct reset_control **ptr, *rstc;
@@ -282,7 +232,7 @@ struct reset_control *devm_reset_control_get(struct device *dev, const char *id) 
	if (!ptr)

		return ERR_PTR(-ENOMEM);



	rstc = reset_control_get(dev, id);

	rstc = __of_reset_control_get(dev ? dev->of_node : NULL, id, index);

	if (!IS_ERR(rstc)) {

		*ptr = rstc;

		devres_add(dev, ptr);
@@ -292,7 +242,7 @@ struct reset_control *devm_reset_control_get(struct device *dev, const char *id) 


	return rstc;

}

EXPORT_SYMBOL_GPL(devm_reset_control_get);

EXPORT_SYMBOL_GPL(__devm_reset_control_get);



/**

 * device_reset - find reset controller associated with the device

include/linux/reset.h

+90 −36
Original line number Diff line number Diff line 
#ifndef _LINUX_RESET_H_

#define _LINUX_RESET_H_



struct device;

struct device_node;

#include <linux/device.h>



struct reset_control;



#ifdef CONFIG_RESET_CONTROLLER
@@ -12,9 +12,11 @@ int reset_control_assert(struct reset_control *rstc); 
int reset_control_deassert(struct reset_control *rstc);

int reset_control_status(struct reset_control *rstc);



struct reset_control *reset_control_get(struct device *dev, const char *id);

struct reset_control *__of_reset_control_get(struct device_node *node,

					     const char *id, int index);

void reset_control_put(struct reset_control *rstc);

struct reset_control *devm_reset_control_get(struct device *dev, const char *id);

struct reset_control *__devm_reset_control_get(struct device *dev,

					       const char *id, int index);



int __must_check device_reset(struct device *dev);
@@ -23,24 +25,6 @@ static inline int device_reset_optional(struct device *dev) 
	return device_reset(dev);

}



static inline struct reset_control *reset_control_get_optional(

					struct device *dev, const char *id)

{

	return reset_control_get(dev, id);

}



static inline struct reset_control *devm_reset_control_get_optional(

					struct device *dev, const char *id)

{

	return devm_reset_control_get(dev, id);

}



struct reset_control *of_reset_control_get(struct device_node *node,

					   const char *id);



struct reset_control *of_reset_control_get_by_index(

					struct device_node *node, int index);



#else



static inline int reset_control_reset(struct reset_control *rstc)
@@ -77,44 +61,114 @@ static inline int device_reset_optional(struct device *dev) 
	return -ENOTSUPP;

}



static inline struct reset_control *__must_check reset_control_get(

					struct device *dev, const char *id)

static inline struct reset_control *__of_reset_control_get(

					struct device_node *node,

					const char *id, int index)

{

	WARN_ON(1);

	return ERR_PTR(-EINVAL);

}



static inline struct reset_control *__must_check devm_reset_control_get(

					struct device *dev, const char *id)

static inline struct reset_control *__devm_reset_control_get(

					struct device *dev,

					const char *id, int index)

{

	WARN_ON(1);

	return ERR_PTR(-EINVAL);

}



static inline struct reset_control *reset_control_get_optional(

#endif /* CONFIG_RESET_CONTROLLER */



/**

 * reset_control_get - Lookup and obtain a reference to a reset controller.

 * @dev: device to be reset by the controller

 * @id: reset line name

 *

 * Returns a struct reset_control or IS_ERR() condition containing errno.

 *

 * Use of id names is optional.

 */

static inline struct reset_control *__must_check reset_control_get(

					struct device *dev, const char *id)

{

	return ERR_PTR(-ENOTSUPP);

#ifndef CONFIG_RESET_CONTROLLER

	WARN_ON(1);

#endif

	return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0);

}



static inline struct reset_control *devm_reset_control_get_optional(

static inline struct reset_control *reset_control_get_optional(

					struct device *dev, const char *id)

{

	return ERR_PTR(-ENOTSUPP);

	return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0);

}



/**

 * of_reset_control_get - Lookup and obtain a reference to a reset controller.

 * @node: device to be reset by the controller

 * @id: reset line name

 *

 * Returns a struct reset_control or IS_ERR() condition containing errno.

 *

 * Use of id names is optional.

 */

static inline struct reset_control *of_reset_control_get(

				struct device_node *node, const char *id)

{

	return ERR_PTR(-ENOTSUPP);

	return __of_reset_control_get(node, id, 0);

}



/**

 * of_reset_control_get_by_index - Lookup and obtain a reference to a reset

 * controller by index.

 * @node: device to be reset by the controller

 * @index: index of the reset controller

 *

 * This is to be used to perform a list of resets for a device or power domain

 * in whatever order. Returns a struct reset_control or IS_ERR() condition

 * containing errno.

 */

static inline struct reset_control *of_reset_control_get_by_index(

					struct device_node *node, int index)

{

	return ERR_PTR(-ENOTSUPP);

	return __of_reset_control_get(node, NULL, index);

}



#endif /* CONFIG_RESET_CONTROLLER */

/**

 * devm_reset_control_get - resource managed reset_control_get()

 * @dev: device to be reset by the controller

 * @id: reset line name

 *

 * Managed reset_control_get(). For reset controllers returned from this

 * function, reset_control_put() is called automatically on driver detach.

 * See reset_control_get() for more information.

 */

static inline struct reset_control *__must_check devm_reset_control_get(

					struct device *dev, const char *id)

{

#ifndef CONFIG_RESET_CONTROLLER

	WARN_ON(1);

#endif

	return __devm_reset_control_get(dev, id, 0);

}



static inline struct reset_control *devm_reset_control_get_optional(

					struct device *dev, const char *id)

{

	return __devm_reset_control_get(dev, id, 0);

}



/**

 * devm_reset_control_get_by_index - resource managed reset_control_get

 * @dev: device to be reset by the controller

 * @index: index of the reset controller

 *

 * Managed reset_control_get(). For reset controllers returned from this

 * function, reset_control_put() is called automatically on driver detach.

 * See reset_control_get() for more information.

 */

static inline struct reset_control *devm_reset_control_get_by_index(

					struct device *dev, int index)

{

	return __devm_reset_control_get(dev, NULL, index);

}



#endif

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