118 lines
3.0 KiB
C
118 lines
3.0 KiB
C
/*
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* Copyright (c) 2012 Broadcom Corporation
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/debugfs.h>
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#include <linux/netdevice.h>
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#include <linux/module.h>
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#include <brcmu_wifi.h>
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#include <brcmu_utils.h>
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#include "dhd.h"
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#include "dhd_bus.h"
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#include "dhd_dbg.h"
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static struct dentry *root_folder;
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void brcmf_debugfs_init(void)
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{
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root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL);
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if (IS_ERR(root_folder))
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root_folder = NULL;
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}
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void brcmf_debugfs_exit(void)
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{
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if (!root_folder)
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return;
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debugfs_remove_recursive(root_folder);
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root_folder = NULL;
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}
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static int brcmf_debugfs_chipinfo_read(struct seq_file *seq, void *data)
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{
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struct brcmf_bus *bus = dev_get_drvdata(seq->private);
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seq_printf(seq, "chip: %x(%u) rev %u\n",
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bus->chip, bus->chip, bus->chiprev);
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return 0;
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}
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int brcmf_debugfs_attach(struct brcmf_pub *drvr)
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{
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struct device *dev = drvr->bus_if->dev;
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if (!root_folder)
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return -ENODEV;
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drvr->dbgfs_dir = debugfs_create_dir(dev_name(dev), root_folder);
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brcmf_debugfs_add_entry(drvr, "chipinfo", brcmf_debugfs_chipinfo_read);
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return PTR_ERR_OR_ZERO(drvr->dbgfs_dir);
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}
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void brcmf_debugfs_detach(struct brcmf_pub *drvr)
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{
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if (!IS_ERR_OR_NULL(drvr->dbgfs_dir))
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debugfs_remove_recursive(drvr->dbgfs_dir);
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}
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struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr)
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{
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return drvr->dbgfs_dir;
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}
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struct brcmf_debugfs_entry {
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int (*read)(struct seq_file *seq, void *data);
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struct brcmf_pub *drvr;
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};
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static int brcmf_debugfs_entry_open(struct inode *inode, struct file *f)
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{
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struct brcmf_debugfs_entry *entry = inode->i_private;
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return single_open(f, entry->read, entry->drvr->bus_if->dev);
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}
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static const struct file_operations brcmf_debugfs_def_ops = {
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.owner = THIS_MODULE,
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.open = brcmf_debugfs_entry_open,
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.release = single_release,
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.read = seq_read,
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.llseek = seq_lseek
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};
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int brcmf_debugfs_add_entry(struct brcmf_pub *drvr, const char *fn,
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int (*read_fn)(struct seq_file *seq, void *data))
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{
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struct dentry *dentry = drvr->dbgfs_dir;
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struct brcmf_debugfs_entry *entry;
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if (IS_ERR_OR_NULL(dentry))
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return -ENOENT;
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entry = devm_kzalloc(drvr->bus_if->dev, sizeof(*entry), GFP_KERNEL);
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if (!entry)
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return -ENOMEM;
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entry->read = read_fn;
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entry->drvr = drvr;
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dentry = debugfs_create_file(fn, S_IRUGO, dentry, entry,
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&brcmf_debugfs_def_ops);
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return PTR_ERR_OR_ZERO(dentry);
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}
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