include/linux/reset.h

   1 #ifndef _LINUX_RESET_H_
   2 #define _LINUX_RESET_H_
   3
   4 struct device;
   5 struct device_node;
   6 struct reset_control;
   7
   8 #ifdef CONFIG_RESET_CONTROLLER
   9
  10 int reset_control_reset(struct reset_control *rstc);
  11 int reset_control_assert(struct reset_control *rstc);
  12 int reset_control_deassert(struct reset_control *rstc);
  13
  14 struct reset_control *reset_control_get(struct device *dev, const char *id);
  15 void reset_control_put(struct reset_control *rstc);
  16 struct reset_control *devm_reset_control_get(struct device *dev, const char *id);
  17
  18 int __must_check device_reset(struct device *dev);
  19
  20 static inline int device_reset_optional(struct device *dev)
  21 {
  22         return device_reset(dev);
  23 }
  24
  25 static inline struct reset_control *reset_control_get_optional(
  26                                         struct device *dev, const char *id)
  27 {
  28         return reset_control_get(dev, id);
  29 }
  30
  31 static inline struct reset_control *devm_reset_control_get_optional(
  32                                         struct device *dev, const char *id)
  33 {
  34         return devm_reset_control_get(dev, id);
  35 }
  36
  37 struct reset_control *of_reset_control_get(struct device_node *node,
  38                                            const char *id);
  39
  40 #else
  41
  42 static inline int reset_control_reset(struct reset_control *rstc)
  43 {
  44         WARN_ON(1);
  45         return 0;
  46 }
  47
  48 static inline int reset_control_assert(struct reset_control *rstc)
  49 {
  50         WARN_ON(1);
  51         return 0;
  52 }
  53
  54 static inline int reset_control_deassert(struct reset_control *rstc)
  55 {
  56         WARN_ON(1);
  57         return 0;
  58 }
  59
  60 static inline void reset_control_put(struct reset_control *rstc)
  61 {
  62         WARN_ON(1);
  63 }
  64
  65 static inline int device_reset_optional(struct device *dev)
  66 {
  67         return -ENOSYS;
  68 }
  69
  70 static inline struct reset_control *reset_control_get_optional(
  71                                         struct device *dev, const char *id)
  72 {
  73         return ERR_PTR(-ENOSYS);
  74 }
  75
  76 static inline struct reset_control *devm_reset_control_get_optional(
  77                                         struct device *dev, const char *id)
  78 {
  79         return ERR_PTR(-ENOSYS);
  80 }
  81
  82 static inline struct reset_control *of_reset_control_get(
  83                                 struct device_node *node, const char *id)
  84 {
  85         return ERR_PTR(-ENOSYS);
  86 }
  87
  88 #endif /* CONFIG_RESET_CONTROLLER */
  89
  90 #endif