From 50a212ec906f7524620675f0c57357691c26c81f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 16 Oct 2024 01:20:19 +0000
Subject: [PATCH] 修改GPIO导出默认初始值
---
kernel/include/linux/debugfs.h | 251 ++++++++++++++++++++++++-------------------------
1 files changed, 123 insertions(+), 128 deletions(-)
diff --git a/kernel/include/linux/debugfs.h b/kernel/include/linux/debugfs.h
index 67e0230..9a87215 100644
--- a/kernel/include/linux/debugfs.h
+++ b/kernel/include/linux/debugfs.h
@@ -35,11 +35,17 @@
const struct debugfs_reg32 *regs;
int nregs;
void __iomem *base;
+ struct device *dev; /* Optional device for Runtime PM */
+};
+
+struct debugfs_u32_array {
+ u32 *array;
+ u32 n_elements;
};
extern struct dentry *arch_debugfs_dir;
-#define DEFINE_DEBUGFS_ATTRIBUTE(__fops, __get, __set, __fmt) \
+#define DEFINE_DEBUGFS_ATTRIBUTE_XSIGNED(__fops, __get, __set, __fmt, __is_signed) \
static int __fops ## _open(struct inode *inode, struct file *file) \
{ \
__simple_attr_check_format(__fmt, 0ull); \
@@ -50,9 +56,15 @@
.open = __fops ## _open, \
.release = simple_attr_release, \
.read = debugfs_attr_read, \
- .write = debugfs_attr_write, \
+ .write = (__is_signed) ? debugfs_attr_write_signed : debugfs_attr_write, \
.llseek = no_llseek, \
}
+
+#define DEFINE_DEBUGFS_ATTRIBUTE(__fops, __get, __set, __fmt) \
+ DEFINE_DEBUGFS_ATTRIBUTE_XSIGNED(__fops, __get, __set, __fmt, false)
+
+#define DEFINE_DEBUGFS_ATTRIBUTE_SIGNED(__fops, __get, __set, __fmt) \
+ DEFINE_DEBUGFS_ATTRIBUTE_XSIGNED(__fops, __get, __set, __fmt, true)
typedef struct vfsmount *(*debugfs_automount_t)(struct dentry *, void *);
@@ -67,10 +79,10 @@
struct dentry *parent, void *data,
const struct file_operations *fops);
-struct dentry *debugfs_create_file_size(const char *name, umode_t mode,
- struct dentry *parent, void *data,
- const struct file_operations *fops,
- loff_t file_size);
+void debugfs_create_file_size(const char *name, umode_t mode,
+ struct dentry *parent, void *data,
+ const struct file_operations *fops,
+ loff_t file_size);
struct dentry *debugfs_create_dir(const char *name, struct dentry *parent);
@@ -83,7 +95,9 @@
void *data);
void debugfs_remove(struct dentry *dentry);
-void debugfs_remove_recursive(struct dentry *dentry);
+#define debugfs_remove_recursive debugfs_remove
+
+void debugfs_lookup_and_remove(const char *name, struct dentry *parent);
const struct file_operations *debugfs_real_fops(const struct file *filp);
@@ -94,32 +108,34 @@
size_t len, loff_t *ppos);
ssize_t debugfs_attr_write(struct file *file, const char __user *buf,
size_t len, loff_t *ppos);
+ssize_t debugfs_attr_write_signed(struct file *file, const char __user *buf,
+ size_t len, loff_t *ppos);
struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
struct dentry *new_dir, const char *new_name);
-struct dentry *debugfs_create_u8(const char *name, umode_t mode,
- struct dentry *parent, u8 *value);
-struct dentry *debugfs_create_u16(const char *name, umode_t mode,
- struct dentry *parent, u16 *value);
-struct dentry *debugfs_create_u32(const char *name, umode_t mode,
- struct dentry *parent, u32 *value);
-struct dentry *debugfs_create_u64(const char *name, umode_t mode,
- struct dentry *parent, u64 *value);
+void debugfs_create_u8(const char *name, umode_t mode, struct dentry *parent,
+ u8 *value);
+void debugfs_create_u16(const char *name, umode_t mode, struct dentry *parent,
+ u16 *value);
+void debugfs_create_u32(const char *name, umode_t mode, struct dentry *parent,
+ u32 *value);
+void debugfs_create_u64(const char *name, umode_t mode, struct dentry *parent,
+ u64 *value);
struct dentry *debugfs_create_ulong(const char *name, umode_t mode,
struct dentry *parent, unsigned long *value);
-struct dentry *debugfs_create_x8(const char *name, umode_t mode,
- struct dentry *parent, u8 *value);
-struct dentry *debugfs_create_x16(const char *name, umode_t mode,
- struct dentry *parent, u16 *value);
-struct dentry *debugfs_create_x32(const char *name, umode_t mode,
- struct dentry *parent, u32 *value);
-struct dentry *debugfs_create_x64(const char *name, umode_t mode,
- struct dentry *parent, u64 *value);
-struct dentry *debugfs_create_size_t(const char *name, umode_t mode,
- struct dentry *parent, size_t *value);
-struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode,
- struct dentry *parent, atomic_t *value);
+void debugfs_create_x8(const char *name, umode_t mode, struct dentry *parent,
+ u8 *value);
+void debugfs_create_x16(const char *name, umode_t mode, struct dentry *parent,
+ u16 *value);
+void debugfs_create_x32(const char *name, umode_t mode, struct dentry *parent,
+ u32 *value);
+void debugfs_create_x64(const char *name, umode_t mode, struct dentry *parent,
+ u64 *value);
+void debugfs_create_size_t(const char *name, umode_t mode,
+ struct dentry *parent, size_t *value);
+void debugfs_create_atomic_t(const char *name, umode_t mode,
+ struct dentry *parent, atomic_t *value);
struct dentry *debugfs_create_bool(const char *name, umode_t mode,
struct dentry *parent, bool *value);
@@ -127,25 +143,20 @@
struct dentry *parent,
struct debugfs_blob_wrapper *blob);
-struct dentry *debugfs_create_regset32(const char *name, umode_t mode,
- struct dentry *parent,
- struct debugfs_regset32 *regset);
+void debugfs_create_regset32(const char *name, umode_t mode,
+ struct dentry *parent,
+ struct debugfs_regset32 *regset);
void debugfs_print_regs32(struct seq_file *s, const struct debugfs_reg32 *regs,
int nregs, void __iomem *base, char *prefix);
-struct dentry *debugfs_create_u32_array(const char *name, umode_t mode,
- struct dentry *parent,
- u32 *array, u32 elements);
+void debugfs_create_u32_array(const char *name, umode_t mode,
+ struct dentry *parent,
+ struct debugfs_u32_array *array);
-struct dentry *debugfs_create_u32_array_hex(const char *name, umode_t mode,
- struct dentry *parent,
- u32 *array, u32 elements);
-
-struct dentry *debugfs_create_devm_seqfile(struct device *dev, const char *name,
- struct dentry *parent,
- int (*read_fn)(struct seq_file *s,
- void *data));
+void debugfs_create_devm_seqfile(struct device *dev, const char *name,
+ struct dentry *parent,
+ int (*read_fn)(struct seq_file *s, void *data));
bool debugfs_initialized(void);
@@ -186,13 +197,11 @@
return ERR_PTR(-ENODEV);
}
-static inline struct dentry *debugfs_create_file_size(const char *name, umode_t mode,
- struct dentry *parent, void *data,
- const struct file_operations *fops,
- loff_t file_size)
-{
- return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_file_size(const char *name, umode_t mode,
+ struct dentry *parent, void *data,
+ const struct file_operations *fops,
+ loff_t file_size)
+{ }
static inline struct dentry *debugfs_create_dir(const char *name,
struct dentry *parent)
@@ -221,6 +230,10 @@
static inline void debugfs_remove_recursive(struct dentry *dentry)
{ }
+static inline void debugfs_lookup_and_remove(const char *name,
+ struct dentry *parent)
+{ }
+
const struct file_operations *debugfs_real_fops(const struct file *filp);
static inline int debugfs_file_get(struct dentry *dentry)
@@ -244,39 +257,30 @@
return -ENODEV;
}
+static inline ssize_t debugfs_attr_write_signed(struct file *file,
+ const char __user *buf,
+ size_t len, loff_t *ppos)
+{
+ return -ENODEV;
+}
+
static inline struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
struct dentry *new_dir, char *new_name)
{
return ERR_PTR(-ENODEV);
}
-static inline struct dentry *debugfs_create_u8(const char *name, umode_t mode,
- struct dentry *parent,
- u8 *value)
-{
- return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_u8(const char *name, umode_t mode,
+ struct dentry *parent, u8 *value) { }
-static inline struct dentry *debugfs_create_u16(const char *name, umode_t mode,
- struct dentry *parent,
- u16 *value)
-{
- return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_u16(const char *name, umode_t mode,
+ struct dentry *parent, u16 *value) { }
-static inline struct dentry *debugfs_create_u32(const char *name, umode_t mode,
- struct dentry *parent,
- u32 *value)
-{
- return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_u32(const char *name, umode_t mode,
+ struct dentry *parent, u32 *value) { }
-static inline struct dentry *debugfs_create_u64(const char *name, umode_t mode,
- struct dentry *parent,
- u64 *value)
-{
- return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_u64(const char *name, umode_t mode,
+ struct dentry *parent, u64 *value) { }
static inline struct dentry *debugfs_create_ulong(const char *name,
umode_t mode,
@@ -286,46 +290,26 @@
return ERR_PTR(-ENODEV);
}
-static inline struct dentry *debugfs_create_x8(const char *name, umode_t mode,
- struct dentry *parent,
- u8 *value)
-{
- return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_x8(const char *name, umode_t mode,
+ struct dentry *parent, u8 *value) { }
-static inline struct dentry *debugfs_create_x16(const char *name, umode_t mode,
- struct dentry *parent,
- u16 *value)
-{
- return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_x16(const char *name, umode_t mode,
+ struct dentry *parent, u16 *value) { }
-static inline struct dentry *debugfs_create_x32(const char *name, umode_t mode,
- struct dentry *parent,
- u32 *value)
-{
- return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_x32(const char *name, umode_t mode,
+ struct dentry *parent, u32 *value) { }
-static inline struct dentry *debugfs_create_x64(const char *name, umode_t mode,
- struct dentry *parent,
- u64 *value)
-{
- return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_x64(const char *name, umode_t mode,
+ struct dentry *parent, u64 *value) { }
-static inline struct dentry *debugfs_create_size_t(const char *name, umode_t mode,
- struct dentry *parent,
- size_t *value)
-{
- return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_size_t(const char *name, umode_t mode,
+ struct dentry *parent, size_t *value)
+{ }
-static inline struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode,
- struct dentry *parent, atomic_t *value)
-{
- return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_atomic_t(const char *name, umode_t mode,
+ struct dentry *parent,
+ atomic_t *value)
+{ }
static inline struct dentry *debugfs_create_bool(const char *name, umode_t mode,
struct dentry *parent,
@@ -341,11 +325,10 @@
return ERR_PTR(-ENODEV);
}
-static inline struct dentry *debugfs_create_regset32(const char *name,
- umode_t mode, struct dentry *parent,
- struct debugfs_regset32 *regset)
+static inline void debugfs_create_regset32(const char *name, umode_t mode,
+ struct dentry *parent,
+ struct debugfs_regset32 *regset)
{
- return ERR_PTR(-ENODEV);
}
static inline void debugfs_print_regs32(struct seq_file *s, const struct debugfs_reg32 *regs,
@@ -358,27 +341,18 @@
return false;
}
-static inline struct dentry *debugfs_create_u32_array(const char *name, umode_t mode,
- struct dentry *parent,
- u32 *array, u32 elements)
+static inline void debugfs_create_u32_array(const char *name, umode_t mode,
+ struct dentry *parent,
+ struct debugfs_u32_array *array)
{
- return ERR_PTR(-ENODEV);
}
-static inline struct dentry *debugfs_create_u32_array_hex(const char *name, umode_t mode,
- struct dentry *parent,
- u32 *array, u32 elements)
+static inline void debugfs_create_devm_seqfile(struct device *dev,
+ const char *name,
+ struct dentry *parent,
+ int (*read_fn)(struct seq_file *s,
+ void *data))
{
- return ERR_PTR(-ENODEV);
-}
-
-static inline struct dentry *debugfs_create_devm_seqfile(struct device *dev,
- const char *name,
- struct dentry *parent,
- int (*read_fn)(struct seq_file *s,
- void *data))
-{
- return ERR_PTR(-ENODEV);
}
static inline ssize_t debugfs_read_file_bool(struct file *file,
@@ -397,4 +371,25 @@
#endif
+/**
+ * debugfs_create_xul - create a debugfs file that is used to read and write an
+ * unsigned long value, formatted in hexadecimal
+ * @name: a pointer to a string containing the name of the file to create.
+ * @mode: the permission that the file should have
+ * @parent: a pointer to the parent dentry for this file. This should be a
+ * directory dentry if set. If this parameter is %NULL, then the
+ * file will be created in the root of the debugfs filesystem.
+ * @value: a pointer to the variable that the file should read to and write
+ * from.
+ */
+static inline void debugfs_create_xul(const char *name, umode_t mode,
+ struct dentry *parent,
+ unsigned long *value)
+{
+ if (sizeof(*value) == sizeof(u32))
+ debugfs_create_x32(name, mode, parent, (u32 *)value);
+ else
+ debugfs_create_x64(name, mode, parent, (u64 *)value);
+}
+
#endif
--
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