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 int reset_control_status(struct reset_control *rstc);
  14
  15 struct reset_control *reset_control_get(struct device *dev, const char *id);
  16 void reset_control_put(struct reset_control *rstc);
  17 struct reset_control *devm_reset_control_get(struct device *dev, const char *id);
  18
  19 int __must_check device_reset(struct device *dev);
  20
  21 static inline int device_reset_optional(struct device *dev)
  22 {
  23         return device_reset(dev);
  24 }
  25
  26 static inline struct reset_control *reset_control_get_optional(
  27                                         struct device *dev, const char *id)
  28 {
  29         return reset_control_get(dev, id);
  30 }
  31
  32 static inline struct reset_control *devm_reset_control_get_optional(
  33                                         struct device *dev, const char *id)
  34 {
  35         return devm_reset_control_get(dev, id);
  36 }
  37
  38 struct reset_control *of_reset_control_get(struct device_node *node,
  39                                            const char *id);
  40
  41 #else
  42
  43 static inline int reset_control_reset(struct reset_control *rstc)
  44 {
  45         WARN_ON(1);
  46         return 0;
  47 }
  48
  49 static inline int reset_control_assert(struct reset_control *rstc)
  50 {
  51         WARN_ON(1);
  52         return 0;
  53 }
  54
  55 static inline int reset_control_deassert(struct reset_control *rstc)
  56 {
  57         WARN_ON(1);
  58         return 0;
  59 }
  60
  61 static inline int reset_control_status(struct reset_control *rstc)
  62 {
  63         WARN_ON(1);
  64         return 0;
  65 }
  66
  67 static inline void reset_control_put(struct reset_control *rstc)
  68 {
  69         WARN_ON(1);
  70 }
  71
  72 static inline int device_reset_optional(struct device *dev)
  73 {
  74         return -ENOSYS;
  75 }
  76
  77 static inline struct reset_control *reset_control_get_optional(
  78                                         struct device *dev, const char *id)
  79 {
  80         return ERR_PTR(-ENOSYS);
  81 }
  82
  83 static inline struct reset_control *devm_reset_control_get_optional(
  84                                         struct device *dev, const char *id)
  85 {
  86         return ERR_PTR(-ENOSYS);
  87 }
  88
  89 static inline struct reset_control *of_reset_control_get(
  90                                 struct device_node *node, const char *id)
  91 {
  92         return ERR_PTR(-ENOSYS);
  93 }
  94
  95 #endif /* CONFIG_RESET_CONTROLLER */
  96
  97 #endif