Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
[linux-2.6.git] / drivers / bluetooth / btmrvl_debugfs.c
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         /* config */
34         struct dentry *psmode;
35         struct dentry *pscmd;
36         struct dentry *hsmode;
37         struct dentry *hscmd;
38         struct dentry *gpiogap;
39         struct dentry *hscfgcmd;
40
41         /* status */
42         struct dentry *curpsmode;
43         struct dentry *hsstate;
44         struct dentry *psstate;
45         struct dentry *txdnldready;
46 };
47
48 static int btmrvl_open_generic(struct inode *inode, struct file *file)
49 {
50         file->private_data = inode->i_private;
51         return 0;
52 }
53
54 static ssize_t btmrvl_hscfgcmd_write(struct file *file,
55                         const char __user *ubuf, size_t count, loff_t *ppos)
56 {
57         struct btmrvl_private *priv = file->private_data;
58         char buf[16];
59         long result, ret;
60
61         memset(buf, 0, sizeof(buf));
62
63         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
64                 return -EFAULT;
65
66         ret = strict_strtol(buf, 10, &result);
67
68         priv->btmrvl_dev.hscfgcmd = result;
69
70         if (priv->btmrvl_dev.hscfgcmd) {
71                 btmrvl_prepare_command(priv);
72                 wake_up_interruptible(&priv->main_thread.wait_q);
73         }
74
75         return count;
76 }
77
78 static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
79                                                 size_t count, loff_t *ppos)
80 {
81         struct btmrvl_private *priv = file->private_data;
82         char buf[16];
83         int ret;
84
85         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
86                                                 priv->btmrvl_dev.hscfgcmd);
87
88         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
89 }
90
91 static const struct file_operations btmrvl_hscfgcmd_fops = {
92         .read   = btmrvl_hscfgcmd_read,
93         .write  = btmrvl_hscfgcmd_write,
94         .open   = btmrvl_open_generic,
95         .llseek = default_llseek,
96 };
97
98 static ssize_t btmrvl_psmode_write(struct file *file, const char __user *ubuf,
99                                                 size_t count, loff_t *ppos)
100 {
101         struct btmrvl_private *priv = file->private_data;
102         char buf[16];
103         long result, ret;
104
105         memset(buf, 0, sizeof(buf));
106
107         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
108                 return -EFAULT;
109
110         ret = strict_strtol(buf, 10, &result);
111
112         priv->btmrvl_dev.psmode = result;
113
114         return count;
115 }
116
117 static ssize_t btmrvl_psmode_read(struct file *file, char __user *userbuf,
118                                                 size_t count, loff_t *ppos)
119 {
120         struct btmrvl_private *priv = file->private_data;
121         char buf[16];
122         int ret;
123
124         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
125                                                 priv->btmrvl_dev.psmode);
126
127         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
128 }
129
130 static const struct file_operations btmrvl_psmode_fops = {
131         .read   = btmrvl_psmode_read,
132         .write  = btmrvl_psmode_write,
133         .open   = btmrvl_open_generic,
134         .llseek = default_llseek,
135 };
136
137 static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
138                                                 size_t count, loff_t *ppos)
139 {
140         struct btmrvl_private *priv = file->private_data;
141         char buf[16];
142         long result, ret;
143
144         memset(buf, 0, sizeof(buf));
145
146         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
147                 return -EFAULT;
148
149         ret = strict_strtol(buf, 10, &result);
150
151         priv->btmrvl_dev.pscmd = result;
152
153         if (priv->btmrvl_dev.pscmd) {
154                 btmrvl_prepare_command(priv);
155                 wake_up_interruptible(&priv->main_thread.wait_q);
156         }
157
158         return count;
159
160 }
161
162 static ssize_t btmrvl_pscmd_read(struct file *file, char __user *userbuf,
163                                                 size_t count, loff_t *ppos)
164 {
165         struct btmrvl_private *priv = file->private_data;
166         char buf[16];
167         int ret;
168
169         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);
170
171         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
172 }
173
174 static const struct file_operations btmrvl_pscmd_fops = {
175         .read = btmrvl_pscmd_read,
176         .write = btmrvl_pscmd_write,
177         .open = btmrvl_open_generic,
178         .llseek = default_llseek,
179 };
180
181 static ssize_t btmrvl_gpiogap_write(struct file *file, const char __user *ubuf,
182                                                 size_t count, loff_t *ppos)
183 {
184         struct btmrvl_private *priv = file->private_data;
185         char buf[16];
186         long result, ret;
187
188         memset(buf, 0, sizeof(buf));
189
190         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
191                 return -EFAULT;
192
193         ret = strict_strtol(buf, 16, &result);
194
195         priv->btmrvl_dev.gpio_gap = result;
196
197         return count;
198 }
199
200 static ssize_t btmrvl_gpiogap_read(struct file *file, char __user *userbuf,
201                                                 size_t count, loff_t *ppos)
202 {
203         struct btmrvl_private *priv = file->private_data;
204         char buf[16];
205         int ret;
206
207         ret = snprintf(buf, sizeof(buf) - 1, "0x%x\n",
208                                                 priv->btmrvl_dev.gpio_gap);
209
210         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
211 }
212
213 static const struct file_operations btmrvl_gpiogap_fops = {
214         .read   = btmrvl_gpiogap_read,
215         .write  = btmrvl_gpiogap_write,
216         .open   = btmrvl_open_generic,
217         .llseek = default_llseek,
218 };
219
220 static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
221                                                 size_t count, loff_t *ppos)
222 {
223         struct btmrvl_private *priv = file->private_data;
224         char buf[16];
225         long result, ret;
226
227         memset(buf, 0, sizeof(buf));
228
229         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
230                 return -EFAULT;
231
232         ret = strict_strtol(buf, 10, &result);
233
234         priv->btmrvl_dev.hscmd = result;
235         if (priv->btmrvl_dev.hscmd) {
236                 btmrvl_prepare_command(priv);
237                 wake_up_interruptible(&priv->main_thread.wait_q);
238         }
239
240         return count;
241 }
242
243 static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
244                                                 size_t count, loff_t *ppos)
245 {
246         struct btmrvl_private *priv = file->private_data;
247         char buf[16];
248         int ret;
249
250         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);
251
252         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
253 }
254
255 static const struct file_operations btmrvl_hscmd_fops = {
256         .read   = btmrvl_hscmd_read,
257         .write  = btmrvl_hscmd_write,
258         .open   = btmrvl_open_generic,
259         .llseek = default_llseek,
260 };
261
262 static ssize_t btmrvl_hsmode_write(struct file *file, const char __user *ubuf,
263                                                 size_t count, loff_t *ppos)
264 {
265         struct btmrvl_private *priv = file->private_data;
266         char buf[16];
267         long result, ret;
268
269         memset(buf, 0, sizeof(buf));
270
271         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
272                 return -EFAULT;
273
274         ret = strict_strtol(buf, 10, &result);
275
276         priv->btmrvl_dev.hsmode = result;
277
278         return count;
279 }
280
281 static ssize_t btmrvl_hsmode_read(struct file *file, char __user * userbuf,
282                                                 size_t count, loff_t *ppos)
283 {
284         struct btmrvl_private *priv = file->private_data;
285         char buf[16];
286         int ret;
287
288         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hsmode);
289
290         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
291 }
292
293 static const struct file_operations btmrvl_hsmode_fops = {
294         .read   = btmrvl_hsmode_read,
295         .write  = btmrvl_hsmode_write,
296         .open   = btmrvl_open_generic,
297         .llseek = default_llseek,
298 };
299
300 static ssize_t btmrvl_curpsmode_read(struct file *file, char __user *userbuf,
301                                                 size_t count, loff_t *ppos)
302 {
303         struct btmrvl_private *priv = file->private_data;
304         char buf[16];
305         int ret;
306
307         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->psmode);
308
309         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
310 }
311
312 static const struct file_operations btmrvl_curpsmode_fops = {
313         .read   = btmrvl_curpsmode_read,
314         .open   = btmrvl_open_generic,
315         .llseek = default_llseek,
316 };
317
318 static ssize_t btmrvl_psstate_read(struct file *file, char __user * userbuf,
319                                                 size_t count, loff_t *ppos)
320 {
321         struct btmrvl_private *priv = file->private_data;
322         char buf[16];
323         int ret;
324
325         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->ps_state);
326
327         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
328 }
329
330 static const struct file_operations btmrvl_psstate_fops = {
331         .read   = btmrvl_psstate_read,
332         .open   = btmrvl_open_generic,
333         .llseek = default_llseek,
334 };
335
336 static ssize_t btmrvl_hsstate_read(struct file *file, char __user *userbuf,
337                                                 size_t count, loff_t *ppos)
338 {
339         struct btmrvl_private *priv = file->private_data;
340         char buf[16];
341         int ret;
342
343         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->hs_state);
344
345         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
346 }
347
348 static const struct file_operations btmrvl_hsstate_fops = {
349         .read   = btmrvl_hsstate_read,
350         .open   = btmrvl_open_generic,
351         .llseek = default_llseek,
352 };
353
354 static ssize_t btmrvl_txdnldready_read(struct file *file, char __user *userbuf,
355                                                 size_t count, loff_t *ppos)
356 {
357         struct btmrvl_private *priv = file->private_data;
358         char buf[16];
359         int ret;
360
361         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
362                                         priv->btmrvl_dev.tx_dnld_rdy);
363
364         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
365 }
366
367 static const struct file_operations btmrvl_txdnldready_fops = {
368         .read   = btmrvl_txdnldready_read,
369         .open   = btmrvl_open_generic,
370         .llseek = default_llseek,
371 };
372
373 void btmrvl_debugfs_init(struct hci_dev *hdev)
374 {
375         struct btmrvl_private *priv = hdev->driver_data;
376         struct btmrvl_debugfs_data *dbg;
377
378         if (!hdev->debugfs)
379                 return;
380
381         dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
382         priv->debugfs_data = dbg;
383
384         if (!dbg) {
385                 BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
386                 return;
387         }
388
389         dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);
390
391         dbg->psmode = debugfs_create_file("psmode", 0644, dbg->config_dir,
392                                 hdev->driver_data, &btmrvl_psmode_fops);
393         dbg->pscmd = debugfs_create_file("pscmd", 0644, dbg->config_dir,
394                                 hdev->driver_data, &btmrvl_pscmd_fops);
395         dbg->gpiogap = debugfs_create_file("gpiogap", 0644, dbg->config_dir,
396                                 hdev->driver_data, &btmrvl_gpiogap_fops);
397         dbg->hsmode =  debugfs_create_file("hsmode", 0644, dbg->config_dir,
398                                 hdev->driver_data, &btmrvl_hsmode_fops);
399         dbg->hscmd = debugfs_create_file("hscmd", 0644, dbg->config_dir,
400                                 hdev->driver_data, &btmrvl_hscmd_fops);
401         dbg->hscfgcmd = debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
402                                 hdev->driver_data, &btmrvl_hscfgcmd_fops);
403
404         dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
405         dbg->curpsmode = debugfs_create_file("curpsmode", 0444,
406                                                 dbg->status_dir,
407                                                 hdev->driver_data,
408                                                 &btmrvl_curpsmode_fops);
409         dbg->psstate = debugfs_create_file("psstate", 0444, dbg->status_dir,
410                                 hdev->driver_data, &btmrvl_psstate_fops);
411         dbg->hsstate = debugfs_create_file("hsstate", 0444, dbg->status_dir,
412                                 hdev->driver_data, &btmrvl_hsstate_fops);
413         dbg->txdnldready = debugfs_create_file("txdnldready", 0444,
414                                                 dbg->status_dir,
415                                                 hdev->driver_data,
416                                                 &btmrvl_txdnldready_fops);
417 }
418
419 void btmrvl_debugfs_remove(struct hci_dev *hdev)
420 {
421         struct btmrvl_private *priv = hdev->driver_data;
422         struct btmrvl_debugfs_data *dbg = priv->debugfs_data;
423
424         if (!dbg)
425                 return;
426
427         debugfs_remove(dbg->psmode);
428         debugfs_remove(dbg->pscmd);
429         debugfs_remove(dbg->gpiogap);
430         debugfs_remove(dbg->hsmode);
431         debugfs_remove(dbg->hscmd);
432         debugfs_remove(dbg->hscfgcmd);
433         debugfs_remove(dbg->config_dir);
434
435         debugfs_remove(dbg->curpsmode);
436         debugfs_remove(dbg->psstate);
437         debugfs_remove(dbg->hsstate);
438         debugfs_remove(dbg->txdnldready);
439         debugfs_remove(dbg->status_dir);
440
441         kfree(dbg);
442 }