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         if (ret)
  68                 return ret;
  69
  70         priv->btmrvl_dev.hscfgcmd = result;
  71
  72         if (priv->btmrvl_dev.hscfgcmd) {
  73                 btmrvl_prepare_command(priv);
  74                 wake_up_interruptible(&priv->main_thread.wait_q);
  75         }
  76
  77         return count;
  78 }
  79
  80 static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
  81                                                 size_t count, loff_t *ppos)
  82 {
  83         struct btmrvl_private *priv = file->private_data;
  84         char buf[16];
  85         int ret;
  86
  87         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
  88                                                 priv->btmrvl_dev.hscfgcmd);
  89
  90         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
  91 }
  92
  93 static const struct file_operations btmrvl_hscfgcmd_fops = {
  94         .read   = btmrvl_hscfgcmd_read,
  95         .write  = btmrvl_hscfgcmd_write,
  96         .open   = btmrvl_open_generic,
  97         .llseek = default_llseek,
  98 };
  99
 100 static ssize_t btmrvl_psmode_write(struct file *file, const char __user *ubuf,
 101                                                 size_t count, loff_t *ppos)
 102 {
 103         struct btmrvl_private *priv = file->private_data;
 104         char buf[16];
 105         long result, ret;
 106
 107         memset(buf, 0, sizeof(buf));
 108
 109         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 110                 return -EFAULT;
 111
 112         ret = strict_strtol(buf, 10, &result);
 113         if (ret)
 114                 return ret;
 115
 116         priv->btmrvl_dev.psmode = result;
 117
 118         return count;
 119 }
 120
 121 static ssize_t btmrvl_psmode_read(struct file *file, char __user *userbuf,
 122                                                 size_t count, loff_t *ppos)
 123 {
 124         struct btmrvl_private *priv = file->private_data;
 125         char buf[16];
 126         int ret;
 127
 128         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
 129                                                 priv->btmrvl_dev.psmode);
 130
 131         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 132 }
 133
 134 static const struct file_operations btmrvl_psmode_fops = {
 135         .read   = btmrvl_psmode_read,
 136         .write  = btmrvl_psmode_write,
 137         .open   = btmrvl_open_generic,
 138         .llseek = default_llseek,
 139 };
 140
 141 static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
 142                                                 size_t count, loff_t *ppos)
 143 {
 144         struct btmrvl_private *priv = file->private_data;
 145         char buf[16];
 146         long result, ret;
 147
 148         memset(buf, 0, sizeof(buf));
 149
 150         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 151                 return -EFAULT;
 152
 153         ret = strict_strtol(buf, 10, &result);
 154         if (ret)
 155                 return ret;
 156
 157         priv->btmrvl_dev.pscmd = result;
 158
 159         if (priv->btmrvl_dev.pscmd) {
 160                 btmrvl_prepare_command(priv);
 161                 wake_up_interruptible(&priv->main_thread.wait_q);
 162         }
 163
 164         return count;
 165
 166 }
 167
 168 static ssize_t btmrvl_pscmd_read(struct file *file, char __user *userbuf,
 169                                                 size_t count, loff_t *ppos)
 170 {
 171         struct btmrvl_private *priv = file->private_data;
 172         char buf[16];
 173         int ret;
 174
 175         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);
 176
 177         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 178 }
 179
 180 static const struct file_operations btmrvl_pscmd_fops = {
 181         .read = btmrvl_pscmd_read,
 182         .write = btmrvl_pscmd_write,
 183         .open = btmrvl_open_generic,
 184         .llseek = default_llseek,
 185 };
 186
 187 static ssize_t btmrvl_gpiogap_write(struct file *file, const char __user *ubuf,
 188                                                 size_t count, loff_t *ppos)
 189 {
 190         struct btmrvl_private *priv = file->private_data;
 191         char buf[16];
 192         long result, ret;
 193
 194         memset(buf, 0, sizeof(buf));
 195
 196         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 197                 return -EFAULT;
 198
 199         ret = strict_strtol(buf, 16, &result);
 200         if (ret)
 201                 return ret;
 202
 203         priv->btmrvl_dev.gpio_gap = result;
 204
 205         return count;
 206 }
 207
 208 static ssize_t btmrvl_gpiogap_read(struct file *file, char __user *userbuf,
 209                                                 size_t count, loff_t *ppos)
 210 {
 211         struct btmrvl_private *priv = file->private_data;
 212         char buf[16];
 213         int ret;
 214
 215         ret = snprintf(buf, sizeof(buf) - 1, "0x%x\n",
 216                                                 priv->btmrvl_dev.gpio_gap);
 217
 218         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 219 }
 220
 221 static const struct file_operations btmrvl_gpiogap_fops = {
 222         .read   = btmrvl_gpiogap_read,
 223         .write  = btmrvl_gpiogap_write,
 224         .open   = btmrvl_open_generic,
 225         .llseek = default_llseek,
 226 };
 227
 228 static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
 229                                                 size_t count, loff_t *ppos)
 230 {
 231         struct btmrvl_private *priv = file->private_data;
 232         char buf[16];
 233         long result, ret;
 234
 235         memset(buf, 0, sizeof(buf));
 236
 237         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 238                 return -EFAULT;
 239
 240         ret = strict_strtol(buf, 10, &result);
 241         if (ret)
 242                 return ret;
 243
 244         priv->btmrvl_dev.hscmd = result;
 245         if (priv->btmrvl_dev.hscmd) {
 246                 btmrvl_prepare_command(priv);
 247                 wake_up_interruptible(&priv->main_thread.wait_q);
 248         }
 249
 250         return count;
 251 }
 252
 253 static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
 254                                                 size_t count, loff_t *ppos)
 255 {
 256         struct btmrvl_private *priv = file->private_data;
 257         char buf[16];
 258         int ret;
 259
 260         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);
 261
 262         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 263 }
 264
 265 static const struct file_operations btmrvl_hscmd_fops = {
 266         .read   = btmrvl_hscmd_read,
 267         .write  = btmrvl_hscmd_write,
 268         .open   = btmrvl_open_generic,
 269         .llseek = default_llseek,
 270 };
 271
 272 static ssize_t btmrvl_hsmode_write(struct file *file, const char __user *ubuf,
 273                                                 size_t count, loff_t *ppos)
 274 {
 275         struct btmrvl_private *priv = file->private_data;
 276         char buf[16];
 277         long result, ret;
 278
 279         memset(buf, 0, sizeof(buf));
 280
 281         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 282                 return -EFAULT;
 283
 284         ret = strict_strtol(buf, 10, &result);
 285         if (ret)
 286                 return ret;
 287
 288         priv->btmrvl_dev.hsmode = result;
 289
 290         return count;
 291 }
 292
 293 static ssize_t btmrvl_hsmode_read(struct file *file, char __user * userbuf,
 294                                                 size_t count, loff_t *ppos)
 295 {
 296         struct btmrvl_private *priv = file->private_data;
 297         char buf[16];
 298         int ret;
 299
 300         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hsmode);
 301
 302         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 303 }
 304
 305 static const struct file_operations btmrvl_hsmode_fops = {
 306         .read   = btmrvl_hsmode_read,
 307         .write  = btmrvl_hsmode_write,
 308         .open   = btmrvl_open_generic,
 309         .llseek = default_llseek,
 310 };
 311
 312 static ssize_t btmrvl_curpsmode_read(struct file *file, char __user *userbuf,
 313                                                 size_t count, loff_t *ppos)
 314 {
 315         struct btmrvl_private *priv = file->private_data;
 316         char buf[16];
 317         int ret;
 318
 319         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->psmode);
 320
 321         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 322 }
 323
 324 static const struct file_operations btmrvl_curpsmode_fops = {
 325         .read   = btmrvl_curpsmode_read,
 326         .open   = btmrvl_open_generic,
 327         .llseek = default_llseek,
 328 };
 329
 330 static ssize_t btmrvl_psstate_read(struct file *file, char __user * userbuf,
 331                                                 size_t count, loff_t *ppos)
 332 {
 333         struct btmrvl_private *priv = file->private_data;
 334         char buf[16];
 335         int ret;
 336
 337         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->ps_state);
 338
 339         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 340 }
 341
 342 static const struct file_operations btmrvl_psstate_fops = {
 343         .read   = btmrvl_psstate_read,
 344         .open   = btmrvl_open_generic,
 345         .llseek = default_llseek,
 346 };
 347
 348 static ssize_t btmrvl_hsstate_read(struct file *file, char __user *userbuf,
 349                                                 size_t count, loff_t *ppos)
 350 {
 351         struct btmrvl_private *priv = file->private_data;
 352         char buf[16];
 353         int ret;
 354
 355         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->hs_state);
 356
 357         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 358 }
 359
 360 static const struct file_operations btmrvl_hsstate_fops = {
 361         .read   = btmrvl_hsstate_read,
 362         .open   = btmrvl_open_generic,
 363         .llseek = default_llseek,
 364 };
 365
 366 static ssize_t btmrvl_txdnldready_read(struct file *file, char __user *userbuf,
 367                                                 size_t count, loff_t *ppos)
 368 {
 369         struct btmrvl_private *priv = file->private_data;
 370         char buf[16];
 371         int ret;
 372
 373         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
 374                                         priv->btmrvl_dev.tx_dnld_rdy);
 375
 376         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 377 }
 378
 379 static const struct file_operations btmrvl_txdnldready_fops = {
 380         .read   = btmrvl_txdnldready_read,
 381         .open   = btmrvl_open_generic,
 382         .llseek = default_llseek,
 383 };
 384
 385 void btmrvl_debugfs_init(struct hci_dev *hdev)
 386 {
 387         struct btmrvl_private *priv = hdev->driver_data;
 388         struct btmrvl_debugfs_data *dbg;
 389
 390         if (!hdev->debugfs)
 391                 return;
 392
 393         dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
 394         priv->debugfs_data = dbg;
 395
 396         if (!dbg) {
 397                 BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
 398                 return;
 399         }
 400
 401         dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);
 402
 403         dbg->psmode = debugfs_create_file("psmode", 0644, dbg->config_dir,
 404                                 hdev->driver_data, &btmrvl_psmode_fops);
 405         dbg->pscmd = debugfs_create_file("pscmd", 0644, dbg->config_dir,
 406                                 hdev->driver_data, &btmrvl_pscmd_fops);
 407         dbg->gpiogap = debugfs_create_file("gpiogap", 0644, dbg->config_dir,
 408                                 hdev->driver_data, &btmrvl_gpiogap_fops);
 409         dbg->hsmode =  debugfs_create_file("hsmode", 0644, dbg->config_dir,
 410                                 hdev->driver_data, &btmrvl_hsmode_fops);
 411         dbg->hscmd = debugfs_create_file("hscmd", 0644, dbg->config_dir,
 412                                 hdev->driver_data, &btmrvl_hscmd_fops);
 413         dbg->hscfgcmd = debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
 414                                 hdev->driver_data, &btmrvl_hscfgcmd_fops);
 415
 416         dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
 417         dbg->curpsmode = debugfs_create_file("curpsmode", 0444,
 418                                                 dbg->status_dir,
 419                                                 hdev->driver_data,
 420                                                 &btmrvl_curpsmode_fops);
 421         dbg->psstate = debugfs_create_file("psstate", 0444, dbg->status_dir,
 422                                 hdev->driver_data, &btmrvl_psstate_fops);
 423         dbg->hsstate = debugfs_create_file("hsstate", 0444, dbg->status_dir,
 424                                 hdev->driver_data, &btmrvl_hsstate_fops);
 425         dbg->txdnldready = debugfs_create_file("txdnldready", 0444,
 426                                                 dbg->status_dir,
 427                                                 hdev->driver_data,
 428                                                 &btmrvl_txdnldready_fops);
 429 }
 430
 431 void btmrvl_debugfs_remove(struct hci_dev *hdev)
 432 {
 433         struct btmrvl_private *priv = hdev->driver_data;
 434         struct btmrvl_debugfs_data *dbg = priv->debugfs_data;
 435
 436         if (!dbg)
 437                 return;
 438
 439         debugfs_remove(dbg->psmode);
 440         debugfs_remove(dbg->pscmd);
 441         debugfs_remove(dbg->gpiogap);
 442         debugfs_remove(dbg->hsmode);
 443         debugfs_remove(dbg->hscmd);
 444         debugfs_remove(dbg->hscfgcmd);
 445         debugfs_remove(dbg->config_dir);
 446
 447         debugfs_remove(dbg->curpsmode);
 448         debugfs_remove(dbg->psstate);
 449         debugfs_remove(dbg->hsstate);
 450         debugfs_remove(dbg->txdnldready);
 451         debugfs_remove(dbg->status_dir);
 452
 453         kfree(dbg);
 454 }