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debugfs: add tools to printk 32-bit registers

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Some debugfs file I deal with are mostly blocks of registers,
i.e. lines of the form "<name> = 0x<value>". Some files are only
registers, some include registers blocks among other material.  This
patch introduces data structures and functions to deal with both
cases.  I expect more users of this over time.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@st.com>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alessandro Rubini
2011-11-18 14:50:21 +01:00
committed by Greg Kroah-Hartman
parent fe7484834b
commit 1a087c6ad9
3 changed files with 147 additions and 1 deletions
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26
include/linux/debugfs.h
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@@ -16,6 +16,7 @@
#define _DEBUGFS_H_
#include <linux/fs.h>
#include <linux/seq_file.h>
#include <linux/types.h>
@@ -26,6 +27,17 @@ struct debugfs_blob_wrapper {
unsigned long size;
};
struct debugfs_reg32 {
char *name;
unsigned long offset;
};
struct debugfs_regset32 {
struct debugfs_reg32 *regs;
int nregs;
void __iomem *base;
};
extern struct dentry *arch_debugfs_dir;
#if defined(CONFIG_DEBUG_FS)
@@ -74,6 +86,13 @@ struct dentry *debugfs_create_blob(const char *name, mode_t mode,
struct dentry *parent,
struct debugfs_blob_wrapper *blob);
struct dentry *debugfs_create_regset32(const char *name, mode_t mode,
struct dentry *parent,
struct debugfs_regset32 *regset);
int debugfs_print_regs32(struct seq_file *s, struct debugfs_reg32 *regs,
int nregs, void __iomem *base, char *prefix);
bool debugfs_initialized(void);
#else
@@ -188,6 +207,13 @@ static inline struct dentry *debugfs_create_blob(const char *name, mode_t mode,
return ERR_PTR(-ENODEV);
}
static inline struct dentry *debugfs_create_regset32(const char *name,
mode_t mode, struct dentry *parent,
struct debugfs_regset32 *regset)
{
return ERR_PTR(-ENODEV);
}
static inline bool debugfs_initialized(void)
{
return false;