Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / wireless / brcm80211 / brcmfmac / debug.c

diff --git a/kernel/drivers/net/wireless/brcm80211/brcmfmac/debug.c b/kernel/drivers/net/wireless/brcm80211/brcmfmac/debug.c
new file mode 100644 (file)
index 0000000..9b473d5
--- /dev/null
+++ b/kernel/drivers/net/wireless/brcm80211/brcmfmac/debug.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2012 Broadcom Corporation
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <linux/debugfs.h>
+#include <linux/netdevice.h>
+#include <linux/module.h>
+
+#include <brcmu_wifi.h>
+#include <brcmu_utils.h>
+#include "core.h"
+#include "bus.h"
+#include "debug.h"
+
+static struct dentry *root_folder;
+
+void brcmf_debugfs_init(void)
+{
+       root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL);
+       if (IS_ERR(root_folder))
+               root_folder = NULL;
+}
+
+void brcmf_debugfs_exit(void)
+{
+       if (!root_folder)
+               return;
+
+       debugfs_remove_recursive(root_folder);
+       root_folder = NULL;
+}
+
+static int brcmf_debugfs_chipinfo_read(struct seq_file *seq, void *data)
+{
+       struct brcmf_bus *bus = dev_get_drvdata(seq->private);
+
+       seq_printf(seq, "chip: %x(%u) rev %u\n",
+                  bus->chip, bus->chip, bus->chiprev);
+       return 0;
+}
+
+int brcmf_debugfs_attach(struct brcmf_pub *drvr)
+{
+       struct device *dev = drvr->bus_if->dev;
+
+       if (!root_folder)
+               return -ENODEV;
+
+       drvr->dbgfs_dir = debugfs_create_dir(dev_name(dev), root_folder);
+       brcmf_debugfs_add_entry(drvr, "chipinfo", brcmf_debugfs_chipinfo_read);
+
+       return PTR_ERR_OR_ZERO(drvr->dbgfs_dir);
+}
+
+void brcmf_debugfs_detach(struct brcmf_pub *drvr)
+{
+       if (!IS_ERR_OR_NULL(drvr->dbgfs_dir))
+               debugfs_remove_recursive(drvr->dbgfs_dir);
+}
+
+struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr)
+{
+       return drvr->dbgfs_dir;
+}
+
+struct brcmf_debugfs_entry {
+       int (*read)(struct seq_file *seq, void *data);
+       struct brcmf_pub *drvr;
+};
+
+static int brcmf_debugfs_entry_open(struct inode *inode, struct file *f)
+{
+       struct brcmf_debugfs_entry *entry = inode->i_private;
+
+       return single_open(f, entry->read, entry->drvr->bus_if->dev);
+}
+
+static const struct file_operations brcmf_debugfs_def_ops = {
+       .owner = THIS_MODULE,
+       .open = brcmf_debugfs_entry_open,
+       .release = single_release,
+       .read = seq_read,
+       .llseek = seq_lseek
+};
+
+int brcmf_debugfs_add_entry(struct brcmf_pub *drvr, const char *fn,
+                           int (*read_fn)(struct seq_file *seq, void *data))
+{
+       struct dentry *dentry =  drvr->dbgfs_dir;
+       struct brcmf_debugfs_entry *entry;
+
+       if (IS_ERR_OR_NULL(dentry))
+               return -ENOENT;
+
+       entry = devm_kzalloc(drvr->bus_if->dev, sizeof(*entry), GFP_KERNEL);
+       if (!entry)
+               return -ENOMEM;
+
+       entry->read = read_fn;
+       entry->drvr = drvr;
+
+       dentry = debugfs_create_file(fn, S_IRUGO, dentry, entry,
+                                    &brcmf_debugfs_def_ops);
+
+       return PTR_ERR_OR_ZERO(dentry);
+}