39b4da71ca
ENOSYS is reserved to report invalid syscalls to userspace. Consistently return ENOTSUPP to indicate that the driver doesn't support the functionality or the reset framework is not enabled at all. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
121 lines
2.6 KiB
C
121 lines
2.6 KiB
C
#ifndef _LINUX_RESET_H_
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#define _LINUX_RESET_H_
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struct device;
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struct device_node;
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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 *reset_control_get(struct device *dev, const char *id);
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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, const char *id);
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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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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 reset_control_get(dev, id);
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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);
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}
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struct reset_control *of_reset_control_get(struct device_node *node,
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const char *id);
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struct reset_control *of_reset_control_get_by_index(
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struct device_node *node, int index);
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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 *__must_check reset_control_get(
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struct device *dev, const char *id)
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{
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WARN_ON(1);
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return ERR_PTR(-EINVAL);
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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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WARN_ON(1);
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return ERR_PTR(-EINVAL);
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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 ERR_PTR(-ENOTSUPP);
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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 ERR_PTR(-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, const char *id)
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{
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return ERR_PTR(-ENOTSUPP);
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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 ERR_PTR(-ENOTSUPP);
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}
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#endif /* CONFIG_RESET_CONTROLLER */
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#endif
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