Root/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
29struct 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
48static ssize_t btmrvl_hscfgcmd_write(struct file *file,
49            const char __user *ubuf, size_t count, loff_t *ppos)
50{
51    struct btmrvl_private *priv = file->private_data;
52    char buf[16];
53    long result, ret;
54
55    memset(buf, 0, sizeof(buf));
56
57    if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
58        return -EFAULT;
59
60    ret = strict_strtol(buf, 10, &result);
61    if (ret)
62        return ret;
63
64    priv->btmrvl_dev.hscfgcmd = result;
65
66    if (priv->btmrvl_dev.hscfgcmd) {
67        btmrvl_prepare_command(priv);
68        wake_up_interruptible(&priv->main_thread.wait_q);
69    }
70
71    return count;
72}
73
74static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
75                        size_t count, loff_t *ppos)
76{
77    struct btmrvl_private *priv = file->private_data;
78    char buf[16];
79    int ret;
80
81    ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
82                        priv->btmrvl_dev.hscfgcmd);
83
84    return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
85}
86
87static const struct file_operations btmrvl_hscfgcmd_fops = {
88    .read = btmrvl_hscfgcmd_read,
89    .write = btmrvl_hscfgcmd_write,
90    .open = simple_open,
91    .llseek = default_llseek,
92};
93
94static ssize_t btmrvl_psmode_write(struct file *file, const char __user *ubuf,
95                        size_t count, loff_t *ppos)
96{
97    struct btmrvl_private *priv = file->private_data;
98    char buf[16];
99    long result, ret;
100
101    memset(buf, 0, sizeof(buf));
102
103    if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
104        return -EFAULT;
105
106    ret = strict_strtol(buf, 10, &result);
107    if (ret)
108        return ret;
109
110    priv->btmrvl_dev.psmode = result;
111
112    return count;
113}
114
115static ssize_t btmrvl_psmode_read(struct file *file, char __user *userbuf,
116                        size_t count, loff_t *ppos)
117{
118    struct btmrvl_private *priv = file->private_data;
119    char buf[16];
120    int ret;
121
122    ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
123                        priv->btmrvl_dev.psmode);
124
125    return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
126}
127
128static const struct file_operations btmrvl_psmode_fops = {
129    .read = btmrvl_psmode_read,
130    .write = btmrvl_psmode_write,
131    .open = simple_open,
132    .llseek = default_llseek,
133};
134
135static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
136                        size_t count, loff_t *ppos)
137{
138    struct btmrvl_private *priv = file->private_data;
139    char buf[16];
140    long result, ret;
141
142    memset(buf, 0, sizeof(buf));
143
144    if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
145        return -EFAULT;
146
147    ret = strict_strtol(buf, 10, &result);
148    if (ret)
149        return ret;
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
162static 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
174static const struct file_operations btmrvl_pscmd_fops = {
175    .read = btmrvl_pscmd_read,
176    .write = btmrvl_pscmd_write,
177    .open = simple_open,
178    .llseek = default_llseek,
179};
180
181static 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    if (ret)
195        return ret;
196
197    priv->btmrvl_dev.gpio_gap = result;
198
199    return count;
200}
201
202static ssize_t btmrvl_gpiogap_read(struct file *file, char __user *userbuf,
203                        size_t count, loff_t *ppos)
204{
205    struct btmrvl_private *priv = file->private_data;
206    char buf[16];
207    int ret;
208
209    ret = snprintf(buf, sizeof(buf) - 1, "0x%x\n",
210                        priv->btmrvl_dev.gpio_gap);
211
212    return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
213}
214
215static const struct file_operations btmrvl_gpiogap_fops = {
216    .read = btmrvl_gpiogap_read,
217    .write = btmrvl_gpiogap_write,
218    .open = simple_open,
219    .llseek = default_llseek,
220};
221
222static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
223                        size_t count, loff_t *ppos)
224{
225    struct btmrvl_private *priv = file->private_data;
226    char buf[16];
227    long result, ret;
228
229    memset(buf, 0, sizeof(buf));
230
231    if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
232        return -EFAULT;
233
234    ret = strict_strtol(buf, 10, &result);
235    if (ret)
236        return ret;
237
238    priv->btmrvl_dev.hscmd = result;
239    if (priv->btmrvl_dev.hscmd) {
240        btmrvl_prepare_command(priv);
241        wake_up_interruptible(&priv->main_thread.wait_q);
242    }
243
244    return count;
245}
246
247static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
248                        size_t count, loff_t *ppos)
249{
250    struct btmrvl_private *priv = file->private_data;
251    char buf[16];
252    int ret;
253
254    ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);
255
256    return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
257}
258
259static const struct file_operations btmrvl_hscmd_fops = {
260    .read = btmrvl_hscmd_read,
261    .write = btmrvl_hscmd_write,
262    .open = simple_open,
263    .llseek = default_llseek,
264};
265
266static ssize_t btmrvl_hsmode_write(struct file *file, const char __user *ubuf,
267                        size_t count, loff_t *ppos)
268{
269    struct btmrvl_private *priv = file->private_data;
270    char buf[16];
271    long result, ret;
272
273    memset(buf, 0, sizeof(buf));
274
275    if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
276        return -EFAULT;
277
278    ret = strict_strtol(buf, 10, &result);
279    if (ret)
280        return ret;
281
282    priv->btmrvl_dev.hsmode = result;
283
284    return count;
285}
286
287static ssize_t btmrvl_hsmode_read(struct file *file, char __user * userbuf,
288                        size_t count, loff_t *ppos)
289{
290    struct btmrvl_private *priv = file->private_data;
291    char buf[16];
292    int ret;
293
294    ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hsmode);
295
296    return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
297}
298
299static const struct file_operations btmrvl_hsmode_fops = {
300    .read = btmrvl_hsmode_read,
301    .write = btmrvl_hsmode_write,
302    .open = simple_open,
303    .llseek = default_llseek,
304};
305
306static ssize_t btmrvl_curpsmode_read(struct file *file, char __user *userbuf,
307                        size_t count, loff_t *ppos)
308{
309    struct btmrvl_private *priv = file->private_data;
310    char buf[16];
311    int ret;
312
313    ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->psmode);
314
315    return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
316}
317
318static const struct file_operations btmrvl_curpsmode_fops = {
319    .read = btmrvl_curpsmode_read,
320    .open = simple_open,
321    .llseek = default_llseek,
322};
323
324static ssize_t btmrvl_psstate_read(struct file *file, char __user * userbuf,
325                        size_t count, loff_t *ppos)
326{
327    struct btmrvl_private *priv = file->private_data;
328    char buf[16];
329    int ret;
330
331    ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->ps_state);
332
333    return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
334}
335
336static const struct file_operations btmrvl_psstate_fops = {
337    .read = btmrvl_psstate_read,
338    .open = simple_open,
339    .llseek = default_llseek,
340};
341
342static ssize_t btmrvl_hsstate_read(struct file *file, char __user *userbuf,
343                        size_t count, loff_t *ppos)
344{
345    struct btmrvl_private *priv = file->private_data;
346    char buf[16];
347    int ret;
348
349    ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->hs_state);
350
351    return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
352}
353
354static const struct file_operations btmrvl_hsstate_fops = {
355    .read = btmrvl_hsstate_read,
356    .open = simple_open,
357    .llseek = default_llseek,
358};
359
360static ssize_t btmrvl_txdnldready_read(struct file *file, char __user *userbuf,
361                        size_t count, loff_t *ppos)
362{
363    struct btmrvl_private *priv = file->private_data;
364    char buf[16];
365    int ret;
366
367    ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
368                    priv->btmrvl_dev.tx_dnld_rdy);
369
370    return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
371}
372
373static const struct file_operations btmrvl_txdnldready_fops = {
374    .read = btmrvl_txdnldready_read,
375    .open = simple_open,
376    .llseek = default_llseek,
377};
378
379void btmrvl_debugfs_init(struct hci_dev *hdev)
380{
381    struct btmrvl_private *priv = hci_get_drvdata(hdev);
382    struct btmrvl_debugfs_data *dbg;
383
384    if (!hdev->debugfs)
385        return;
386
387    dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
388    priv->debugfs_data = dbg;
389
390    if (!dbg) {
391        BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
392        return;
393    }
394
395    dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);
396
397    dbg->psmode = debugfs_create_file("psmode", 0644, dbg->config_dir,
398                      priv, &btmrvl_psmode_fops);
399    dbg->pscmd = debugfs_create_file("pscmd", 0644, dbg->config_dir,
400                     priv, &btmrvl_pscmd_fops);
401    dbg->gpiogap = debugfs_create_file("gpiogap", 0644, dbg->config_dir,
402                       priv, &btmrvl_gpiogap_fops);
403    dbg->hsmode = debugfs_create_file("hsmode", 0644, dbg->config_dir,
404                       priv, &btmrvl_hsmode_fops);
405    dbg->hscmd = debugfs_create_file("hscmd", 0644, dbg->config_dir,
406                     priv, &btmrvl_hscmd_fops);
407    dbg->hscfgcmd = debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
408                        priv, &btmrvl_hscfgcmd_fops);
409
410    dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
411    dbg->curpsmode = debugfs_create_file("curpsmode", 0444,
412                         dbg->status_dir, priv,
413                         &btmrvl_curpsmode_fops);
414    dbg->psstate = debugfs_create_file("psstate", 0444, dbg->status_dir,
415                       priv, &btmrvl_psstate_fops);
416    dbg->hsstate = debugfs_create_file("hsstate", 0444, dbg->status_dir,
417                       priv, &btmrvl_hsstate_fops);
418    dbg->txdnldready = debugfs_create_file("txdnldready", 0444,
419                           dbg->status_dir, priv,
420                           &btmrvl_txdnldready_fops);
421}
422
423void btmrvl_debugfs_remove(struct hci_dev *hdev)
424{
425    struct btmrvl_private *priv = hci_get_drvdata(hdev);
426    struct btmrvl_debugfs_data *dbg = priv->debugfs_data;
427
428    if (!dbg)
429        return;
430
431    debugfs_remove(dbg->psmode);
432    debugfs_remove(dbg->pscmd);
433    debugfs_remove(dbg->gpiogap);
434    debugfs_remove(dbg->hsmode);
435    debugfs_remove(dbg->hscmd);
436    debugfs_remove(dbg->hscfgcmd);
437    debugfs_remove(dbg->config_dir);
438
439    debugfs_remove(dbg->curpsmode);
440    debugfs_remove(dbg->psstate);
441    debugfs_remove(dbg->hsstate);
442    debugfs_remove(dbg->txdnldready);
443    debugfs_remove(dbg->status_dir);
444
445    kfree(dbg);
446}
447

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