1 /**
2 * Marvell Bluetooth driver: debugfs related functions
3 *
4 * Copyright (C) 2009, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 *
15 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
17 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
18 * this warranty disclaimer.
19 **/
20
21 #include <linux/debugfs.h>
22 #include <linux/slab.h>
23
24 #include <net/bluetooth/bluetooth.h>
25 #include <net/bluetooth/hci_core.h>
26
27 #include "btmrvl_drv.h"
28
29 struct btmrvl_debugfs_data {
30 struct dentry *config_dir;
31 struct dentry *status_dir;
32 };
33
btmrvl_hscfgcmd_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)34 static ssize_t btmrvl_hscfgcmd_write(struct file *file,
35 const char __user *ubuf, size_t count, loff_t *ppos)
36 {
37 struct btmrvl_private *priv = file->private_data;
38 long result, ret;
39
40 ret = kstrtol_from_user(ubuf, count, 10, &result);
41 if (ret)
42 return ret;
43
44 priv->btmrvl_dev.hscfgcmd = result;
45
46 if (priv->btmrvl_dev.hscfgcmd) {
47 btmrvl_prepare_command(priv);
48 wake_up_interruptible(&priv->main_thread.wait_q);
49 }
50
51 return count;
52 }
53
btmrvl_hscfgcmd_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)54 static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
55 size_t count, loff_t *ppos)
56 {
57 struct btmrvl_private *priv = file->private_data;
58 char buf[16];
59 int ret;
60
61 ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
62 priv->btmrvl_dev.hscfgcmd);
63
64 return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
65 }
66
67 static const struct file_operations btmrvl_hscfgcmd_fops = {
68 .read = btmrvl_hscfgcmd_read,
69 .write = btmrvl_hscfgcmd_write,
70 .open = simple_open,
71 .llseek = default_llseek,
72 };
73
btmrvl_pscmd_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)74 static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
75 size_t count, loff_t *ppos)
76 {
77 struct btmrvl_private *priv = file->private_data;
78 long result, ret;
79
80 ret = kstrtol_from_user(ubuf, count, 10, &result);
81 if (ret)
82 return ret;
83
84 priv->btmrvl_dev.pscmd = result;
85
86 if (priv->btmrvl_dev.pscmd) {
87 btmrvl_prepare_command(priv);
88 wake_up_interruptible(&priv->main_thread.wait_q);
89 }
90
91 return count;
92
93 }
94
btmrvl_pscmd_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)95 static ssize_t btmrvl_pscmd_read(struct file *file, char __user *userbuf,
96 size_t count, loff_t *ppos)
97 {
98 struct btmrvl_private *priv = file->private_data;
99 char buf[16];
100 int ret;
101
102 ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);
103
104 return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
105 }
106
107 static const struct file_operations btmrvl_pscmd_fops = {
108 .read = btmrvl_pscmd_read,
109 .write = btmrvl_pscmd_write,
110 .open = simple_open,
111 .llseek = default_llseek,
112 };
113
btmrvl_hscmd_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)114 static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
115 size_t count, loff_t *ppos)
116 {
117 struct btmrvl_private *priv = file->private_data;
118 long result, ret;
119
120 ret = kstrtol_from_user(ubuf, count, 10, &result);
121 if (ret)
122 return ret;
123
124 priv->btmrvl_dev.hscmd = result;
125 if (priv->btmrvl_dev.hscmd) {
126 btmrvl_prepare_command(priv);
127 wake_up_interruptible(&priv->main_thread.wait_q);
128 }
129
130 return count;
131 }
132
btmrvl_hscmd_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)133 static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
134 size_t count, loff_t *ppos)
135 {
136 struct btmrvl_private *priv = file->private_data;
137 char buf[16];
138 int ret;
139
140 ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);
141
142 return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
143 }
144
145 static const struct file_operations btmrvl_hscmd_fops = {
146 .read = btmrvl_hscmd_read,
147 .write = btmrvl_hscmd_write,
148 .open = simple_open,
149 .llseek = default_llseek,
150 };
151
btmrvl_debugfs_init(struct hci_dev * hdev)152 void btmrvl_debugfs_init(struct hci_dev *hdev)
153 {
154 struct btmrvl_private *priv = hci_get_drvdata(hdev);
155 struct btmrvl_debugfs_data *dbg;
156
157 if (!hdev->debugfs)
158 return;
159
160 dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
161 priv->debugfs_data = dbg;
162
163 if (!dbg) {
164 BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
165 return;
166 }
167
168 dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);
169
170 debugfs_create_u8("psmode", 0644, dbg->config_dir,
171 &priv->btmrvl_dev.psmode);
172 debugfs_create_file("pscmd", 0644, dbg->config_dir,
173 priv, &btmrvl_pscmd_fops);
174 debugfs_create_x16("gpiogap", 0644, dbg->config_dir,
175 &priv->btmrvl_dev.gpio_gap);
176 debugfs_create_u8("hsmode", 0644, dbg->config_dir,
177 &priv->btmrvl_dev.hsmode);
178 debugfs_create_file("hscmd", 0644, dbg->config_dir,
179 priv, &btmrvl_hscmd_fops);
180 debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
181 priv, &btmrvl_hscfgcmd_fops);
182
183 dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
184 debugfs_create_u8("curpsmode", 0444, dbg->status_dir,
185 &priv->adapter->psmode);
186 debugfs_create_u8("psstate", 0444, dbg->status_dir,
187 &priv->adapter->ps_state);
188 debugfs_create_u8("hsstate", 0444, dbg->status_dir,
189 &priv->adapter->hs_state);
190 debugfs_create_u8("txdnldready", 0444, dbg->status_dir,
191 &priv->btmrvl_dev.tx_dnld_rdy);
192 }
193
btmrvl_debugfs_remove(struct hci_dev * hdev)194 void btmrvl_debugfs_remove(struct hci_dev *hdev)
195 {
196 struct btmrvl_private *priv = hci_get_drvdata(hdev);
197 struct btmrvl_debugfs_data *dbg = priv->debugfs_data;
198
199 if (!dbg)
200 return;
201
202 debugfs_remove_recursive(dbg->config_dir);
203 debugfs_remove_recursive(dbg->status_dir);
204
205 kfree(dbg);
206 }
207