2 * Copyright (c) 2012 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 #include <linux/debugfs.h>
17 #include <linux/netdevice.h>
18 #include <linux/module.h>
20 #include <brcmu_wifi.h>
21 #include <brcmu_utils.h>
26 static struct dentry
*root_folder
;
28 void brcmf_debugfs_init(void)
30 root_folder
= debugfs_create_dir(KBUILD_MODNAME
, NULL
);
31 if (IS_ERR(root_folder
))
35 void brcmf_debugfs_exit(void)
40 debugfs_remove_recursive(root_folder
);
44 static int brcmf_debugfs_chipinfo_read(struct seq_file
*seq
, void *data
)
46 struct brcmf_bus
*bus
= dev_get_drvdata(seq
->private);
48 seq_printf(seq
, "chip: %x(%u) rev %u\n",
49 bus
->chip
, bus
->chip
, bus
->chiprev
);
53 int brcmf_debugfs_attach(struct brcmf_pub
*drvr
)
55 struct device
*dev
= drvr
->bus_if
->dev
;
60 drvr
->dbgfs_dir
= debugfs_create_dir(dev_name(dev
), root_folder
);
61 brcmf_debugfs_add_entry(drvr
, "chipinfo", brcmf_debugfs_chipinfo_read
);
63 return PTR_ERR_OR_ZERO(drvr
->dbgfs_dir
);
66 void brcmf_debugfs_detach(struct brcmf_pub
*drvr
)
68 if (!IS_ERR_OR_NULL(drvr
->dbgfs_dir
))
69 debugfs_remove_recursive(drvr
->dbgfs_dir
);
72 struct dentry
*brcmf_debugfs_get_devdir(struct brcmf_pub
*drvr
)
74 return drvr
->dbgfs_dir
;
77 struct brcmf_debugfs_entry
{
78 int (*read
)(struct seq_file
*seq
, void *data
);
79 struct brcmf_pub
*drvr
;
82 static int brcmf_debugfs_entry_open(struct inode
*inode
, struct file
*f
)
84 struct brcmf_debugfs_entry
*entry
= inode
->i_private
;
86 return single_open(f
, entry
->read
, entry
->drvr
->bus_if
->dev
);
89 static const struct file_operations brcmf_debugfs_def_ops
= {
91 .open
= brcmf_debugfs_entry_open
,
92 .release
= single_release
,
97 int brcmf_debugfs_add_entry(struct brcmf_pub
*drvr
, const char *fn
,
98 int (*read_fn
)(struct seq_file
*seq
, void *data
))
100 struct dentry
*dentry
= drvr
->dbgfs_dir
;
101 struct brcmf_debugfs_entry
*entry
;
103 if (IS_ERR_OR_NULL(dentry
))
106 entry
= devm_kzalloc(drvr
->bus_if
->dev
, sizeof(*entry
), GFP_KERNEL
);
110 entry
->read
= read_fn
;
113 dentry
= debugfs_create_file(fn
, S_IRUGO
, dentry
, entry
,
114 &brcmf_debugfs_def_ops
);
116 return PTR_ERR_OR_ZERO(dentry
);