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 }