tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
28struct 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
46static int btmrvl_open_generic(struct inode *inode, struct file *file)
47{
48 file->private_data = inode->i_private;
49 return 0;
50}
51
52static 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
76static 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
89static const struct file_operations btmrvl_hscfgcmd_fops = {
90 .read = btmrvl_hscfgcmd_read,
91 .write = btmrvl_hscfgcmd_write,
92 .open = btmrvl_open_generic,
93};
94
95static 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
114static 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
127static const struct file_operations btmrvl_psmode_fops = {
128 .read = btmrvl_psmode_read,
129 .write = btmrvl_psmode_write,
130 .open = btmrvl_open_generic,
131};
132
133static 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
158static 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
170static const struct file_operations btmrvl_pscmd_fops = {
171 .read = btmrvl_pscmd_read,
172 .write = btmrvl_pscmd_write,
173 .open = btmrvl_open_generic,
174};
175
176static 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
195static 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
208static const struct file_operations btmrvl_gpiogap_fops = {
209 .read = btmrvl_gpiogap_read,
210 .write = btmrvl_gpiogap_write,
211 .open = btmrvl_open_generic,
212};
213
214static 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
237static 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
249static const struct file_operations btmrvl_hscmd_fops = {
250 .read = btmrvl_hscmd_read,
251 .write = btmrvl_hscmd_write,
252 .open = btmrvl_open_generic,
253};
254
255static 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
274static 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
286static const struct file_operations btmrvl_hsmode_fops = {
287 .read = btmrvl_hsmode_read,
288 .write = btmrvl_hsmode_write,
289 .open = btmrvl_open_generic,
290};
291
292static 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
304static const struct file_operations btmrvl_curpsmode_fops = {
305 .read = btmrvl_curpsmode_read,
306 .open = btmrvl_open_generic,
307};
308
309static 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
321static const struct file_operations btmrvl_psstate_fops = {
322 .read = btmrvl_psstate_read,
323 .open = btmrvl_open_generic,
324};
325
326static 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
338static const struct file_operations btmrvl_hsstate_fops = {
339 .read = btmrvl_hsstate_read,
340 .open = btmrvl_open_generic,
341};
342
343static 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
356static const struct file_operations btmrvl_txdnldready_fops = {
357 .read = btmrvl_txdnldready_read,
358 .open = btmrvl_open_generic,
359};
360
361void 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
406void 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}