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6c96f05c8b
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: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
175 lines
4.5 KiB
C
175 lines
4.5 KiB
C
#ifndef _LINUX_RESET_H_
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#define _LINUX_RESET_H_
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#include <linux/device.h>
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struct reset_control;
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#ifdef CONFIG_RESET_CONTROLLER
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int reset_control_reset(struct reset_control *rstc);
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int reset_control_assert(struct reset_control *rstc);
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int reset_control_deassert(struct reset_control *rstc);
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int reset_control_status(struct reset_control *rstc);
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struct reset_control *__of_reset_control_get(struct device_node *node,
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const char *id, int index);
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void reset_control_put(struct reset_control *rstc);
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struct reset_control *__devm_reset_control_get(struct device *dev,
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const char *id, int index);
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int __must_check device_reset(struct device *dev);
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static inline int device_reset_optional(struct device *dev)
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{
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return device_reset(dev);
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}
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#else
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static inline int reset_control_reset(struct reset_control *rstc)
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{
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WARN_ON(1);
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return 0;
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}
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static inline int reset_control_assert(struct reset_control *rstc)
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{
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WARN_ON(1);
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return 0;
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}
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static inline int reset_control_deassert(struct reset_control *rstc)
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{
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WARN_ON(1);
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return 0;
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}
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static inline int reset_control_status(struct reset_control *rstc)
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{
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WARN_ON(1);
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return 0;
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}
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static inline void reset_control_put(struct reset_control *rstc)
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{
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WARN_ON(1);
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}
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static inline int device_reset_optional(struct device *dev)
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{
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return -ENOTSUPP;
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}
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static inline struct reset_control *__of_reset_control_get(
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struct device_node *node,
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const char *id, int index)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline struct reset_control *__devm_reset_control_get(
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struct device *dev,
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const char *id, int index)
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{
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return ERR_PTR(-EINVAL);
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}
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#endif /* CONFIG_RESET_CONTROLLER */
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/**
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* reset_control_get - Lookup and obtain a reference to a reset controller.
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* @dev: device to be reset by the controller
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* @id: reset line name
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*
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* Returns a struct reset_control or IS_ERR() condition containing errno.
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*
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* Use of id names is optional.
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*/
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static inline struct reset_control *__must_check reset_control_get(
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struct device *dev, const char *id)
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{
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#ifndef CONFIG_RESET_CONTROLLER
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WARN_ON(1);
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#endif
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return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0);
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}
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static inline struct reset_control *reset_control_get_optional(
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struct device *dev, const char *id)
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{
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return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0);
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}
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/**
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* of_reset_control_get - Lookup and obtain a reference to a reset controller.
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* @node: device to be reset by the controller
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* @id: reset line name
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*
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* Returns a struct reset_control or IS_ERR() condition containing errno.
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*
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* Use of id names is optional.
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*/
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static inline struct reset_control *of_reset_control_get(
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struct device_node *node, const char *id)
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{
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return __of_reset_control_get(node, id, 0);
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}
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/**
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* of_reset_control_get_by_index - Lookup and obtain a reference to a reset
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* controller by index.
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* @node: device to be reset by the controller
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* @index: index of the reset controller
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*
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* This is to be used to perform a list of resets for a device or power domain
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* in whatever order. Returns a struct reset_control or IS_ERR() condition
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* containing errno.
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*/
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static inline struct reset_control *of_reset_control_get_by_index(
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struct device_node *node, int index)
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{
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return __of_reset_control_get(node, NULL, index);
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}
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/**
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* devm_reset_control_get - resource managed reset_control_get()
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* @dev: device to be reset by the controller
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* @id: reset line name
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*
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* Managed reset_control_get(). For reset controllers returned from this
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* function, reset_control_put() is called automatically on driver detach.
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* See reset_control_get() for more information.
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*/
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static inline struct reset_control *__must_check devm_reset_control_get(
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struct device *dev, const char *id)
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{
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#ifndef CONFIG_RESET_CONTROLLER
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WARN_ON(1);
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#endif
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return __devm_reset_control_get(dev, id, 0);
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}
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static inline struct reset_control *devm_reset_control_get_optional(
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struct device *dev, const char *id)
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{
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return __devm_reset_control_get(dev, id, 0);
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}
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/**
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* devm_reset_control_get_by_index - resource managed reset_control_get
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* @dev: device to be reset by the controller
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* @index: index of the reset controller
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*
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* Managed reset_control_get(). For reset controllers returned from this
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* function, reset_control_put() is called automatically on driver detach.
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* See reset_control_get() for more information.
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*/
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static inline struct reset_control *devm_reset_control_get_by_index(
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struct device *dev, int index)
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{
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return __devm_reset_control_get(dev, NULL, index);
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}
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#endif
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