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path: root/drivers/bluetooth/btmrvl_debugfs.c
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Diffstat (limited to 'drivers/bluetooth/btmrvl_debugfs.c')
-rw-r--r--drivers/bluetooth/btmrvl_debugfs.c193
1 files changed, 193 insertions, 0 deletions
diff --git a/drivers/bluetooth/btmrvl_debugfs.c b/drivers/bluetooth/btmrvl_debugfs.c
new file mode 100644
index 000000000..32329a2e5
--- /dev/null
+++ b/drivers/bluetooth/btmrvl_debugfs.c
@@ -0,0 +1,193 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Marvell Bluetooth driver: debugfs related functions
+ *
+ * Copyright (C) 2009, Marvell International Ltd.
+ **/
+
+#include <linux/debugfs.h>
+#include <linux/slab.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btmrvl_drv.h"
+
+struct btmrvl_debugfs_data {
+ struct dentry *config_dir;
+ struct dentry *status_dir;
+};
+
+static ssize_t btmrvl_hscfgcmd_write(struct file *file,
+ const char __user *ubuf, size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ long result, ret;
+
+ ret = kstrtol_from_user(ubuf, count, 10, &result);
+ if (ret)
+ return ret;
+
+ priv->btmrvl_dev.hscfgcmd = result;
+
+ if (priv->btmrvl_dev.hscfgcmd) {
+ btmrvl_prepare_command(priv);
+ wake_up_interruptible(&priv->main_thread.wait_q);
+ }
+
+ return count;
+}
+
+static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ char buf[16];
+ int ret;
+
+ ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
+ priv->btmrvl_dev.hscfgcmd);
+
+ return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
+}
+
+static const struct file_operations btmrvl_hscfgcmd_fops = {
+ .read = btmrvl_hscfgcmd_read,
+ .write = btmrvl_hscfgcmd_write,
+ .open = simple_open,
+ .llseek = default_llseek,
+};
+
+static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
+ size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ long result, ret;
+
+ ret = kstrtol_from_user(ubuf, count, 10, &result);
+ if (ret)
+ return ret;
+
+ priv->btmrvl_dev.pscmd = result;
+
+ if (priv->btmrvl_dev.pscmd) {
+ btmrvl_prepare_command(priv);
+ wake_up_interruptible(&priv->main_thread.wait_q);
+ }
+
+ return count;
+
+}
+
+static ssize_t btmrvl_pscmd_read(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ char buf[16];
+ int ret;
+
+ ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);
+
+ return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
+}
+
+static const struct file_operations btmrvl_pscmd_fops = {
+ .read = btmrvl_pscmd_read,
+ .write = btmrvl_pscmd_write,
+ .open = simple_open,
+ .llseek = default_llseek,
+};
+
+static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
+ size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ long result, ret;
+
+ ret = kstrtol_from_user(ubuf, count, 10, &result);
+ if (ret)
+ return ret;
+
+ priv->btmrvl_dev.hscmd = result;
+ if (priv->btmrvl_dev.hscmd) {
+ btmrvl_prepare_command(priv);
+ wake_up_interruptible(&priv->main_thread.wait_q);
+ }
+
+ return count;
+}
+
+static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ char buf[16];
+ int ret;
+
+ ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);
+
+ return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
+}
+
+static const struct file_operations btmrvl_hscmd_fops = {
+ .read = btmrvl_hscmd_read,
+ .write = btmrvl_hscmd_write,
+ .open = simple_open,
+ .llseek = default_llseek,
+};
+
+void btmrvl_debugfs_init(struct hci_dev *hdev)
+{
+ struct btmrvl_private *priv = hci_get_drvdata(hdev);
+ struct btmrvl_debugfs_data *dbg;
+
+ if (!hdev->debugfs)
+ return;
+
+ dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
+ priv->debugfs_data = dbg;
+
+ if (!dbg) {
+ BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
+ return;
+ }
+
+ dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);
+
+ debugfs_create_u8("psmode", 0644, dbg->config_dir,
+ &priv->btmrvl_dev.psmode);
+ debugfs_create_file("pscmd", 0644, dbg->config_dir,
+ priv, &btmrvl_pscmd_fops);
+ debugfs_create_x16("gpiogap", 0644, dbg->config_dir,
+ &priv->btmrvl_dev.gpio_gap);
+ debugfs_create_u8("hsmode", 0644, dbg->config_dir,
+ &priv->btmrvl_dev.hsmode);
+ debugfs_create_file("hscmd", 0644, dbg->config_dir,
+ priv, &btmrvl_hscmd_fops);
+ debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
+ priv, &btmrvl_hscfgcmd_fops);
+
+ dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
+ debugfs_create_u8("curpsmode", 0444, dbg->status_dir,
+ &priv->adapter->psmode);
+ debugfs_create_u8("psstate", 0444, dbg->status_dir,
+ &priv->adapter->ps_state);
+ debugfs_create_u8("hsstate", 0444, dbg->status_dir,
+ &priv->adapter->hs_state);
+ debugfs_create_u8("txdnldready", 0444, dbg->status_dir,
+ &priv->btmrvl_dev.tx_dnld_rdy);
+}
+
+void btmrvl_debugfs_remove(struct hci_dev *hdev)
+{
+ struct btmrvl_private *priv = hci_get_drvdata(hdev);
+ struct btmrvl_debugfs_data *dbg = priv->debugfs_data;
+
+ if (!dbg)
+ return;
+
+ debugfs_remove_recursive(dbg->config_dir);
+ debugfs_remove_recursive(dbg->status_dir);
+
+ kfree(dbg);
+}