d43b5cb864ef86fcb70fe6aa6e678fa275a196e1
[pandora-kernel.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
23 #include <net/bluetooth/bluetooth.h>
24 #include <net/bluetooth/hci_core.h>
25
26 #include "btmrvl_drv.h"
27
28 struct btmrvl_debugfs_data {
29         struct dentry *root_dir, *config_dir, *status_dir;
30
31         /* config */
32         struct dentry *psmode;
33         struct dentry *pscmd;
34         struct dentry *hsmode;
35         struct dentry *hscmd;
36         struct dentry *gpiogap;
37         struct dentry *hscfgcmd;
38
39         /* status */
40         struct dentry *curpsmode;
41         struct dentry *hsstate;
42         struct dentry *psstate;
43         struct dentry *txdnldready;
44 };
45
46 static int btmrvl_open_generic(struct inode *inode, struct file *file)
47 {
48         file->private_data = inode->i_private;
49         return 0;
50 }
51
52 static ssize_t btmrvl_hscfgcmd_write(struct file *file,
53                         const char __user *ubuf, size_t count, loff_t *ppos)
54 {
55         struct btmrvl_private *priv = file->private_data;
56         char buf[16];
57         long result, ret;
58
59         memset(buf, 0, sizeof(buf));
60
61         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
62                 return -EFAULT;
63
64         ret = strict_strtol(buf, 10, &result);
65
66         priv->btmrvl_dev.hscfgcmd = result;
67
68         if (priv->btmrvl_dev.hscfgcmd) {
69                 btmrvl_prepare_command(priv);
70                 wake_up_interruptible(&priv->main_thread.wait_q);
71         }
72
73         return count;
74 }
75
76 static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
77                                                 size_t count, loff_t *ppos)
78 {
79         struct btmrvl_private *priv = file->private_data;
80         char buf[16];
81         int ret;
82
83         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
84                                                 priv->btmrvl_dev.hscfgcmd);
85
86         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
87 }
88
89 static const struct file_operations btmrvl_hscfgcmd_fops = {
90         .read   = btmrvl_hscfgcmd_read,
91         .write  = btmrvl_hscfgcmd_write,
92         .open   = btmrvl_open_generic,
93 };
94
95 static ssize_t btmrvl_psmode_write(struct file *file, const char __user *ubuf,
96                                                 size_t count, loff_t *ppos)
97 {
98         struct btmrvl_private *priv = file->private_data;
99         char buf[16];
100         long result, ret;
101
102         memset(buf, 0, sizeof(buf));
103
104         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
105                 return -EFAULT;
106
107         ret = strict_strtol(buf, 10, &result);
108
109         priv->btmrvl_dev.psmode = result;
110
111         return count;
112 }
113
114 static ssize_t btmrvl_psmode_read(struct file *file, char __user *userbuf,
115                                                 size_t count, loff_t *ppos)
116 {
117         struct btmrvl_private *priv = file->private_data;
118         char buf[16];
119         int ret;
120
121         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
122                                                 priv->btmrvl_dev.psmode);
123
124         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
125 }
126
127 static const struct file_operations btmrvl_psmode_fops = {
128         .read   = btmrvl_psmode_read,
129         .write  = btmrvl_psmode_write,
130         .open   = btmrvl_open_generic,
131 };
132
133 static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
134                                                 size_t count, loff_t *ppos)
135 {
136         struct btmrvl_private *priv = file->private_data;
137         char buf[16];
138         long result, ret;
139
140         memset(buf, 0, sizeof(buf));
141
142         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
143                 return -EFAULT;
144
145         ret = strict_strtol(buf, 10, &result);
146
147         priv->btmrvl_dev.pscmd = result;
148
149         if (priv->btmrvl_dev.pscmd) {
150                 btmrvl_prepare_command(priv);
151                 wake_up_interruptible(&priv->main_thread.wait_q);
152         }
153
154         return count;
155
156 }
157
158 static ssize_t btmrvl_pscmd_read(struct file *file, char __user *userbuf,
159                                                 size_t count, loff_t *ppos)
160 {
161         struct btmrvl_private *priv = file->private_data;
162         char buf[16];
163         int ret;
164
165         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);
166
167         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
168 }
169
170 static const struct file_operations btmrvl_pscmd_fops = {
171         .read = btmrvl_pscmd_read,
172         .write = btmrvl_pscmd_write,
173         .open = btmrvl_open_generic,
174 };
175
176 static ssize_t btmrvl_gpiogap_write(struct file *file, const char __user *ubuf,
177                                                 size_t count, loff_t *ppos)
178 {
179         struct btmrvl_private *priv = file->private_data;
180         char buf[16];
181         long result, ret;
182
183         memset(buf, 0, sizeof(buf));
184
185         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
186                 return -EFAULT;
187
188         ret = strict_strtol(buf, 16, &result);
189
190         priv->btmrvl_dev.gpio_gap = result;
191
192         return count;
193 }
194
195 static ssize_t btmrvl_gpiogap_read(struct file *file, char __user *userbuf,
196                                                 size_t count, loff_t *ppos)
197 {
198         struct btmrvl_private *priv = file->private_data;
199         char buf[16];
200         int ret;
201
202         ret = snprintf(buf, sizeof(buf) - 1, "0x%x\n",
203                                                 priv->btmrvl_dev.gpio_gap);
204
205         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
206 }
207
208 static const struct file_operations btmrvl_gpiogap_fops = {
209         .read   = btmrvl_gpiogap_read,
210         .write  = btmrvl_gpiogap_write,
211         .open   = btmrvl_open_generic,
212 };
213
214 static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
215                                                 size_t count, loff_t *ppos)
216 {
217         struct btmrvl_private *priv = (struct btmrvl_private *) file->private_data;
218         char buf[16];
219         long result, ret;
220
221         memset(buf, 0, sizeof(buf));
222
223         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
224                 return -EFAULT;
225
226         ret = strict_strtol(buf, 10, &result);
227
228         priv->btmrvl_dev.hscmd = result;
229         if (priv->btmrvl_dev.hscmd) {
230                 btmrvl_prepare_command(priv);
231                 wake_up_interruptible(&priv->main_thread.wait_q);
232         }
233
234         return count;
235 }
236
237 static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
238                                                 size_t count, loff_t *ppos)
239 {
240         struct btmrvl_private *priv = file->private_data;
241         char buf[16];
242         int ret;
243
244         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);
245
246         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
247 }
248
249 static const struct file_operations btmrvl_hscmd_fops = {
250         .read   = btmrvl_hscmd_read,
251         .write  = btmrvl_hscmd_write,
252         .open   = btmrvl_open_generic,
253 };
254
255 static ssize_t btmrvl_hsmode_write(struct file *file, const char __user *ubuf,
256                                                 size_t count, loff_t *ppos)
257 {
258         struct btmrvl_private *priv = file->private_data;
259         char buf[16];
260         long result, ret;
261
262         memset(buf, 0, sizeof(buf));
263
264         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
265                 return -EFAULT;
266
267         ret = strict_strtol(buf, 10, &result);
268
269         priv->btmrvl_dev.hsmode = result;
270
271         return count;
272 }
273
274 static ssize_t btmrvl_hsmode_read(struct file *file, char __user * userbuf,
275                                                 size_t count, loff_t *ppos)
276 {
277         struct btmrvl_private *priv = file->private_data;
278         char buf[16];
279         int ret;
280
281         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hsmode);
282
283         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
284 }
285
286 static const struct file_operations btmrvl_hsmode_fops = {
287         .read   = btmrvl_hsmode_read,
288         .write  = btmrvl_hsmode_write,
289         .open   = btmrvl_open_generic,
290 };
291
292 static ssize_t btmrvl_curpsmode_read(struct file *file, char __user *userbuf,
293                                                 size_t count, loff_t *ppos)
294 {
295         struct btmrvl_private *priv = file->private_data;
296         char buf[16];
297         int ret;
298
299         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->psmode);
300
301         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
302 }
303
304 static const struct file_operations btmrvl_curpsmode_fops = {
305         .read   = btmrvl_curpsmode_read,
306         .open   = btmrvl_open_generic,
307 };
308
309 static ssize_t btmrvl_psstate_read(struct file *file, char __user * userbuf,
310                                                 size_t count, loff_t *ppos)
311 {
312         struct btmrvl_private *priv = file->private_data;
313         char buf[16];
314         int ret;
315
316         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->ps_state);
317
318         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
319 }
320
321 static const struct file_operations btmrvl_psstate_fops = {
322         .read   = btmrvl_psstate_read,
323         .open   = btmrvl_open_generic,
324 };
325
326 static ssize_t btmrvl_hsstate_read(struct file *file, char __user *userbuf,
327                                                 size_t count, loff_t *ppos)
328 {
329         struct btmrvl_private *priv = file->private_data;
330         char buf[16];
331         int ret;
332
333         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->hs_state);
334
335         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
336 }
337
338 static const struct file_operations btmrvl_hsstate_fops = {
339         .read   = btmrvl_hsstate_read,
340         .open   = btmrvl_open_generic,
341 };
342
343 static ssize_t btmrvl_txdnldready_read(struct file *file, char __user *userbuf,
344                                                 size_t count, loff_t *ppos)
345 {
346         struct btmrvl_private *priv = file->private_data;
347         char buf[16];
348         int ret;
349
350         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
351                                         priv->btmrvl_dev.tx_dnld_rdy);
352
353         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
354 }
355
356 static const struct file_operations btmrvl_txdnldready_fops = {
357         .read   = btmrvl_txdnldready_read,
358         .open   = btmrvl_open_generic,
359 };
360
361 void btmrvl_debugfs_init(struct hci_dev *hdev)
362 {
363         struct btmrvl_private *priv = hdev->driver_data;
364         struct btmrvl_debugfs_data *dbg;
365
366         dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
367         priv->debugfs_data = dbg;
368
369         if (!dbg) {
370                 BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
371                 return;
372         }
373
374         dbg->root_dir = debugfs_create_dir("btmrvl", NULL);
375
376         dbg->config_dir = debugfs_create_dir("config", dbg->root_dir);
377
378         dbg->psmode = debugfs_create_file("psmode", 0644, dbg->config_dir,
379                                 hdev->driver_data, &btmrvl_psmode_fops);
380         dbg->pscmd = debugfs_create_file("pscmd", 0644, dbg->config_dir,
381                                 hdev->driver_data, &btmrvl_pscmd_fops);
382         dbg->gpiogap = debugfs_create_file("gpiogap", 0644, dbg->config_dir,
383                                 hdev->driver_data, &btmrvl_gpiogap_fops);
384         dbg->hsmode =  debugfs_create_file("hsmode", 0644, dbg->config_dir,
385                                 hdev->driver_data, &btmrvl_hsmode_fops);
386         dbg->hscmd = debugfs_create_file("hscmd", 0644, dbg->config_dir,
387                                 hdev->driver_data, &btmrvl_hscmd_fops);
388         dbg->hscfgcmd = debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
389                                 hdev->driver_data, &btmrvl_hscfgcmd_fops);
390
391         dbg->status_dir = debugfs_create_dir("status", dbg->root_dir);
392         dbg->curpsmode = debugfs_create_file("curpsmode", 0444,
393                                                 dbg->status_dir,
394                                                 hdev->driver_data,
395                                                 &btmrvl_curpsmode_fops);
396         dbg->psstate = debugfs_create_file("psstate", 0444, dbg->status_dir,
397                                 hdev->driver_data, &btmrvl_psstate_fops);
398         dbg->hsstate = debugfs_create_file("hsstate", 0444, dbg->status_dir,
399                                 hdev->driver_data, &btmrvl_hsstate_fops);
400         dbg->txdnldready = debugfs_create_file("txdnldready", 0444,
401                                                 dbg->status_dir,
402                                                 hdev->driver_data,
403                                                 &btmrvl_txdnldready_fops);
404 }
405
406 void btmrvl_debugfs_remove(struct hci_dev *hdev)
407 {
408         struct btmrvl_private *priv = hdev->driver_data;
409         struct btmrvl_debugfs_data *dbg = priv->debugfs_data;
410
411         if (!dbg)
412                 return;
413
414         debugfs_remove(dbg->psmode);
415         debugfs_remove(dbg->pscmd);
416         debugfs_remove(dbg->gpiogap);
417         debugfs_remove(dbg->hsmode);
418         debugfs_remove(dbg->hscmd);
419         debugfs_remove(dbg->hscfgcmd);
420         debugfs_remove(dbg->config_dir);
421
422         debugfs_remove(dbg->curpsmode);
423         debugfs_remove(dbg->psstate);
424         debugfs_remove(dbg->hsstate);
425         debugfs_remove(dbg->txdnldready);
426         debugfs_remove(dbg->status_dir);
427
428         debugfs_remove(dbg->root_dir);
429
430         kfree(dbg);
431 }