first commit for chrg

2025-08-16 22:58:22 +08:00
commit 52a3ed5862
2306 changed files with 1021208 additions and 0 deletions
@@ -0,0 +1,125 @@
+#ifndef __DTB_FWNODE_H__
+#define __DTB_FWNODE_H__
+
+#include "libfdt_env.h"
+#include <rtthread.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+struct fwnode_operations;
+struct rt_device;
+
+#define FWNODE_FLAG_LINKS_ADDED 0x01
+#define FWNODE_FLAG_NOT_DEVICE 0x02
+#define FWNODE_FLAG_INITIALIZED 0x04
+
+#define NR_FWNODE_REFERENCE_ARGS 8
+
+struct fwnode_handle
+{
+    struct fwnode_handle *secondary;
+    const struct fwnode_operations *ops;
+    struct rt_device *dev;
+    struct rt_list_node suppliers;
+    struct rt_list_node consumers;
+    uint8_t flags;
+};
+
+struct fwnode_link
+{
+    struct fwnode_handle *supplier;
+    struct rt_list_node s_hook;
+    struct fwnode_handle *consumer;
+    struct rt_list_node c_hook;
+};
+
+struct fwnode_endpoint
+{
+    unsigned int port;
+    unsigned int id;
+    const struct fwnode_handle *local_fwnode;
+};
+
+struct fwnode_reference_args
+{
+    struct fwnode_handle *fwnode;
+    unsigned int nargs;
+    uint64_t args[NR_FWNODE_REFERENCE_ARGS];
+};
+
+struct fwnode_operations
+{
+    struct fwnode_handle *(*get)(struct fwnode_handle *fwnode);
+    void (*put)(struct fwnode_handle *fwnode);
+    bool (*device_is_available)(const struct fwnode_handle *fwnode);
+    const void *(*device_get_match_data)(const struct fwnode_handle *fwnode,
+                                         const struct rt_device *dev);
+    bool (*property_present)(const struct fwnode_handle *fwnode,
+                             const char *propname);
+    int (*property_read_int_array)(const struct fwnode_handle *fwnode,
+                                   const char *propname,
+                                   unsigned int elem_size, void *val,
+                                   size_t nval);
+    int (*property_read_string_array)(const struct fwnode_handle *fwnode_handle,
+                                      const char *propname, const char **val,
+                                      size_t nval);
+    const char *(*get_name)(const struct fwnode_handle *fwnode);
+    const char *(*get_name_prefix)(const struct fwnode_handle *fwnode);
+    struct fwnode_handle *(*get_parent)(const struct fwnode_handle *fwnode);
+    struct fwnode_handle *(*get_next_child_node)(const struct fwnode_handle *fwnode,
+                                                 struct fwnode_handle *child);
+    struct fwnode_handle *(*get_named_child_node)(const struct fwnode_handle *fwnode,
+                                                  const char *name);
+    int (*get_reference_args)(const struct fwnode_handle *fwnode,
+                              const char *prop, const char *nargs_prop,
+                              unsigned int nargs, unsigned int index,
+                              struct fwnode_reference_args *args);
+    struct fwnode_handle *(*graph_get_next_endpoint)(const struct fwnode_handle *fwnode,
+                                                     struct fwnode_handle *prev);
+    struct fwnode_handle *(*graph_get_remote_endpoint)(const struct fwnode_handle *fwnode);
+    struct fwnode_handle *(*graph_get_port_parent)(struct fwnode_handle *fwnode);
+    int (*graph_parse_endpoint)(const struct fwnode_handle *fwnode,
+                                struct fwnode_endpoint *endpoint);
+    int (*add_links)(struct fwnode_handle *fwnode);
+};
+
+#define fwnode_has_op(fwnode, op) \
+    ((fwnode) && (fwnode)->ops && (fwnode)->ops->op)
+#define fwnode_call_int_op(fwnode, op, ...) \
+    (fwnode ? (fwnode_has_op(fwnode, op) ? (fwnode)->ops->op(fwnode, ##__VA_ARGS__) : -ENXIO) : -EINVAL)
+
+#define fwnode_call_bool_op(fwnode, op, ...) \
+    (fwnode_has_op(fwnode, op) ? (fwnode)->ops->op(fwnode, ##__VA_ARGS__) : false)
+
+#define fwnode_call_ptr_op(fwnode, op, ...) \
+    (fwnode_has_op(fwnode, op) ? (fwnode)->ops->op(fwnode, ##__VA_ARGS__) : NULL)
+#define fwnode_call_void_op(fwnode, op, ...)          \
+    do                                                \
+    {                                                 \
+        if (fwnode_has_op(fwnode, op))                \
+            (fwnode)->ops->op(fwnode, ##__VA_ARGS__); \
+    } while (false)
+
+#define get_dev_from_fwnode(fwnode) ((fwnode)->dev)
+
+static inline void fwnode_init(struct fwnode_handle *fwnode,
+                               const struct fwnode_operations *ops)
+{
+    fwnode->ops = ops;
+    rt_list_init(&fwnode->consumers);
+    rt_list_init(&fwnode->suppliers);
+}
+
+static inline void fwnode_dev_initialized(struct fwnode_handle *fwnode,
+                                          bool initialized)
+{
+    if (!fwnode)
+        return;
+
+    if (initialized)
+        fwnode->flags |= FWNODE_FLAG_INITIALIZED;
+    else
+        fwnode->flags &= ~FWNODE_FLAG_INITIALIZED;
+}
+
+#endif //__DTB_FWNODE_H__