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
  23 #include <net/bluetooth/bluetooth.h>
  24 #include <net/bluetooth/hci_core.h>
  25
  26 #include "btmrvl_drv.h"
  27
  28 struct btmrvl_debugfs_data {
  29         struct dentry *config_dir;
  30         struct dentry *status_dir;
  31
  32         /* config */
  33         struct dentry *psmode;
  34         struct dentry *pscmd;
  35         struct dentry *hsmode;
  36         struct dentry *hscmd;
  37         struct dentry *gpiogap;
  38         struct dentry *hscfgcmd;
  39
  40         /* status */
  41         struct dentry *curpsmode;
  42         struct dentry *hsstate;
  43         struct dentry *psstate;
  44         struct dentry *txdnldready;
  45 };
  46
  47 static int btmrvl_open_generic(struct inode *inode, struct file *file)
  48 {
  49         file->private_data = inode->i_private;
  50         return 0;
  51 }
  52
  53 static ssize_t btmrvl_hscfgcmd_write(struct file *file,
  54                         const char __user *ubuf, size_t count, loff_t *ppos)
  55 {
  56         struct btmrvl_private *priv = file->private_data;
  57         char buf[16];
  58         long result, ret;
  59
  60         memset(buf, 0, sizeof(buf));
  61
  62         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
  63                 return -EFAULT;
  64
  65         ret = strict_strtol(buf, 10, &result);
  66
  67         priv->btmrvl_dev.hscfgcmd = result;
  68
  69         if (priv->btmrvl_dev.hscfgcmd) {
  70                 btmrvl_prepare_command(priv);
  71                 wake_up_interruptible(&priv->main_thread.wait_q);
  72         }
  73
  74         return count;
  75 }
  76
  77 static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
  78                                                 size_t count, loff_t *ppos)
  79 {
  80         struct btmrvl_private *priv = file->private_data;
  81         char buf[16];
  82         int ret;
  83
  84         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
  85                                                 priv->btmrvl_dev.hscfgcmd);
  86
  87         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
  88 }
  89
  90 static const struct file_operations btmrvl_hscfgcmd_fops = {
  91         .read   = btmrvl_hscfgcmd_read,
  92         .write  = btmrvl_hscfgcmd_write,
  93         .open   = btmrvl_open_generic,
  94 };
  95
  96 static ssize_t btmrvl_psmode_write(struct file *file, const char __user *ubuf,
  97                                                 size_t count, loff_t *ppos)
  98 {
  99         struct btmrvl_private *priv = file->private_data;
 100         char buf[16];
 101         long result, ret;
 102
 103         memset(buf, 0, sizeof(buf));
 104
 105         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 106                 return -EFAULT;
 107
 108         ret = strict_strtol(buf, 10, &result);
 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   = btmrvl_open_generic,
 132 };
 133
 134 static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
 135                                                 size_t count, loff_t *ppos)
 136 {
 137         struct btmrvl_private *priv = file->private_data;
 138         char buf[16];
 139         long result, ret;
 140
 141         memset(buf, 0, sizeof(buf));
 142
 143         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 144                 return -EFAULT;
 145
 146         ret = strict_strtol(buf, 10, &result);
 147
 148         priv->btmrvl_dev.pscmd = result;
 149
 150         if (priv->btmrvl_dev.pscmd) {
 151                 btmrvl_prepare_command(priv);
 152                 wake_up_interruptible(&priv->main_thread.wait_q);
 153         }
 154
 155         return count;
 156
 157 }
 158
 159 static ssize_t btmrvl_pscmd_read(struct file *file, char __user *userbuf,
 160                                                 size_t count, loff_t *ppos)
 161 {
 162         struct btmrvl_private *priv = file->private_data;
 163         char buf[16];
 164         int ret;
 165
 166         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);
 167
 168         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 169 }
 170
 171 static const struct file_operations btmrvl_pscmd_fops = {
 172         .read = btmrvl_pscmd_read,
 173         .write = btmrvl_pscmd_write,
 174         .open = btmrvl_open_generic,
 175 };
 176
 177 static ssize_t btmrvl_gpiogap_write(struct file *file, const char __user *ubuf,
 178                                                 size_t count, loff_t *ppos)
 179 {
 180         struct btmrvl_private *priv = file->private_data;
 181         char buf[16];
 182         long result, ret;
 183
 184         memset(buf, 0, sizeof(buf));
 185
 186         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 187                 return -EFAULT;
 188
 189         ret = strict_strtol(buf, 16, &result);
 190
 191         priv->btmrvl_dev.gpio_gap = result;
 192
 193         return count;
 194 }
 195
 196 static ssize_t btmrvl_gpiogap_read(struct file *file, char __user *userbuf,
 197                                                 size_t count, loff_t *ppos)
 198 {
 199         struct btmrvl_private *priv = file->private_data;
 200         char buf[16];
 201         int ret;
 202
 203         ret = snprintf(buf, sizeof(buf) - 1, "0x%x\n",
 204                                                 priv->btmrvl_dev.gpio_gap);
 205
 206         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 207 }
 208
 209 static const struct file_operations btmrvl_gpiogap_fops = {
 210         .read   = btmrvl_gpiogap_read,
 211         .write  = btmrvl_gpiogap_write,
 212         .open   = btmrvl_open_generic,
 213 };
 214
 215 static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
 216                                                 size_t count, loff_t *ppos)
 217 {
 218         struct btmrvl_private *priv = (struct btmrvl_private *) file->private_data;
 219         char buf[16];
 220         long result, ret;
 221
 222         memset(buf, 0, sizeof(buf));
 223
 224         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 225                 return -EFAULT;
 226
 227         ret = strict_strtol(buf, 10, &result);
 228
 229         priv->btmrvl_dev.hscmd = result;
 230         if (priv->btmrvl_dev.hscmd) {
 231                 btmrvl_prepare_command(priv);
 232                 wake_up_interruptible(&priv->main_thread.wait_q);
 233         }
 234
 235         return count;
 236 }
 237
 238 static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
 239                                                 size_t count, loff_t *ppos)
 240 {
 241         struct btmrvl_private *priv = file->private_data;
 242         char buf[16];
 243         int ret;
 244
 245         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);
 246
 247         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 248 }
 249
 250 static const struct file_operations btmrvl_hscmd_fops = {
 251         .read   = btmrvl_hscmd_read,
 252         .write  = btmrvl_hscmd_write,
 253         .open   = btmrvl_open_generic,
 254 };
 255
 256 static ssize_t btmrvl_hsmode_write(struct file *file, const char __user *ubuf,
 257                                                 size_t count, loff_t *ppos)
 258 {
 259         struct btmrvl_private *priv = file->private_data;
 260         char buf[16];
 261         long result, ret;
 262
 263         memset(buf, 0, sizeof(buf));
 264
 265         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 266                 return -EFAULT;
 267
 268         ret = strict_strtol(buf, 10, &result);
 269
 270         priv->btmrvl_dev.hsmode = result;
 271
 272         return count;
 273 }
 274
 275 static ssize_t btmrvl_hsmode_read(struct file *file, char __user * userbuf,
 276                                                 size_t count, loff_t *ppos)
 277 {
 278         struct btmrvl_private *priv = file->private_data;
 279         char buf[16];
 280         int ret;
 281
 282         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hsmode);
 283
 284         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 285 }
 286
 287 static const struct file_operations btmrvl_hsmode_fops = {
 288         .read   = btmrvl_hsmode_read,
 289         .write  = btmrvl_hsmode_write,
 290         .open   = btmrvl_open_generic,
 291 };
 292
 293 static ssize_t btmrvl_curpsmode_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->adapter->psmode);
 301
 302         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 303 }
 304
 305 static const struct file_operations btmrvl_curpsmode_fops = {
 306         .read   = btmrvl_curpsmode_read,
 307         .open   = btmrvl_open_generic,
 308 };
 309
 310 static ssize_t btmrvl_psstate_read(struct file *file, char __user * userbuf,
 311                                                 size_t count, loff_t *ppos)
 312 {
 313         struct btmrvl_private *priv = file->private_data;
 314         char buf[16];
 315         int ret;
 316
 317         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->ps_state);
 318
 319         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 320 }
 321
 322 static const struct file_operations btmrvl_psstate_fops = {
 323         .read   = btmrvl_psstate_read,
 324         .open   = btmrvl_open_generic,
 325 };
 326
 327 static ssize_t btmrvl_hsstate_read(struct file *file, char __user *userbuf,
 328                                                 size_t count, loff_t *ppos)
 329 {
 330         struct btmrvl_private *priv = file->private_data;
 331         char buf[16];
 332         int ret;
 333
 334         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->hs_state);
 335
 336         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 337 }
 338
 339 static const struct file_operations btmrvl_hsstate_fops = {
 340         .read   = btmrvl_hsstate_read,
 341         .open   = btmrvl_open_generic,
 342 };
 343
 344 static ssize_t btmrvl_txdnldready_read(struct file *file, char __user *userbuf,
 345                                                 size_t count, loff_t *ppos)
 346 {
 347         struct btmrvl_private *priv = file->private_data;
 348         char buf[16];
 349         int ret;
 350
 351         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
 352                                         priv->btmrvl_dev.tx_dnld_rdy);
 353
 354         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 355 }
 356
 357 static const struct file_operations btmrvl_txdnldready_fops = {
 358         .read   = btmrvl_txdnldready_read,
 359         .open   = btmrvl_open_generic,
 360 };
 361
 362 void btmrvl_debugfs_init(struct hci_dev *hdev)
 363 {
 364         struct btmrvl_private *priv = hdev->driver_data;
 365         struct btmrvl_debugfs_data *dbg;
 366
 367         if (!hdev->debugfs)
 368                 return;
 369
 370         dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
 371         priv->debugfs_data = dbg;
 372
 373         if (!dbg) {
 374                 BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
 375                 return;
 376         }
 377
 378         dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);
 379
 380         dbg->psmode = debugfs_create_file("psmode", 0644, dbg->config_dir,
 381                                 hdev->driver_data, &btmrvl_psmode_fops);
 382         dbg->pscmd = debugfs_create_file("pscmd", 0644, dbg->config_dir,
 383                                 hdev->driver_data, &btmrvl_pscmd_fops);
 384         dbg->gpiogap = debugfs_create_file("gpiogap", 0644, dbg->config_dir,
 385                                 hdev->driver_data, &btmrvl_gpiogap_fops);
 386         dbg->hsmode =  debugfs_create_file("hsmode", 0644, dbg->config_dir,
 387                                 hdev->driver_data, &btmrvl_hsmode_fops);
 388         dbg->hscmd = debugfs_create_file("hscmd", 0644, dbg->config_dir,
 389                                 hdev->driver_data, &btmrvl_hscmd_fops);
 390         dbg->hscfgcmd = debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
 391                                 hdev->driver_data, &btmrvl_hscfgcmd_fops);
 392
 393         dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
 394         dbg->curpsmode = debugfs_create_file("curpsmode", 0444,
 395                                                 dbg->status_dir,
 396                                                 hdev->driver_data,
 397                                                 &btmrvl_curpsmode_fops);
 398         dbg->psstate = debugfs_create_file("psstate", 0444, dbg->status_dir,
 399                                 hdev->driver_data, &btmrvl_psstate_fops);
 400         dbg->hsstate = debugfs_create_file("hsstate", 0444, dbg->status_dir,
 401                                 hdev->driver_data, &btmrvl_hsstate_fops);
 402         dbg->txdnldready = debugfs_create_file("txdnldready", 0444,
 403                                                 dbg->status_dir,
 404                                                 hdev->driver_data,
 405                                                 &btmrvl_txdnldready_fops);
 406 }
 407
 408 void btmrvl_debugfs_remove(struct hci_dev *hdev)
 409 {
 410         struct btmrvl_private *priv = hdev->driver_data;
 411         struct btmrvl_debugfs_data *dbg = priv->debugfs_data;
 412
 413         if (!dbg)
 414                 return;
 415
 416         debugfs_remove(dbg->psmode);
 417         debugfs_remove(dbg->pscmd);
 418         debugfs_remove(dbg->gpiogap);
 419         debugfs_remove(dbg->hsmode);
 420         debugfs_remove(dbg->hscmd);
 421         debugfs_remove(dbg->hscfgcmd);
 422         debugfs_remove(dbg->config_dir);
 423
 424         debugfs_remove(dbg->curpsmode);
 425         debugfs_remove(dbg->psstate);
 426         debugfs_remove(dbg->hsstate);
 427         debugfs_remove(dbg->txdnldready);
 428         debugfs_remove(dbg->status_dir);
 429
 430         kfree(dbg);
 431 }