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 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
  74 static 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
  87 static 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
  94 static 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
 115 static 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
 128 static 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
 135 static 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
 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 = simple_open,
 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         if (ret)
 195                 return ret;
 196
 197         priv->btmrvl_dev.gpio_gap = result;
 198
 199         return count;
 200 }
 201
 202 static 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
 215 static 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
 222 static 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
 247 static 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
 259 static 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
 266 static 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
 287 static 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
 299 static 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
 306 static 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
 318 static const struct file_operations btmrvl_curpsmode_fops = {
 319         .read   = btmrvl_curpsmode_read,
 320         .open   = simple_open,
 321         .llseek = default_llseek,
 322 };
 323
 324 static 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
 336 static const struct file_operations btmrvl_psstate_fops = {
 337         .read   = btmrvl_psstate_read,
 338         .open   = simple_open,
 339         .llseek = default_llseek,
 340 };
 341
 342 static 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
 354 static const struct file_operations btmrvl_hsstate_fops = {
 355         .read   = btmrvl_hsstate_read,
 356         .open   = simple_open,
 357         .llseek = default_llseek,
 358 };
 359
 360 static 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
 373 static const struct file_operations btmrvl_txdnldready_fops = {
 374         .read   = btmrvl_txdnldready_read,
 375         .open   = simple_open,
 376         .llseek = default_llseek,
 377 };
 378
 379 void 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
 423 void 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 }