drivers/net/ieee802154/atusb.c

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This source file includes following definitions.
atusb_control_msg
atusb_command
atusb_write_reg
atusb_read_reg
atusb_write_subreg
atusb_read_subreg
atusb_get_and_clear_error
atusb_submit_rx_urb
atusb_work_urbs
atusb_tx_done
atusb_in_good
atusb_in
atusb_free_urbs
atusb_alloc_urbs
atusb_xmit_complete
atusb_xmit
atusb_ed
atusb_set_hw_addr_filt
atusb_start
atusb_stop
atusb_txpower
atusb_set_txpower
hulusb_set_txpower
atusb_set_cca_mode
hulusb_set_cca_ed_level
atusb_set_cca_ed_level
atusb_channel
atusb_set_channel
hulusb_set_channel
atusb_set_csma_params
hulusb_set_lbt
atusb_set_frame_retries
atusb_set_promiscuous_mode
atusb_get_and_show_revision
atusb_get_and_show_build
atusb_get_and_conf_chip
atusb_set_extended_addr
atusb_probe
atusb_disconnect
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * atusb.c - Driver for the ATUSB IEEE 802.15.4 dongle
   4  *
   5  * Written 2013 by Werner Almesberger <werner@almesberger.net>
   6  *
   7  * Copyright (c) 2015 - 2016 Stefan Schmidt <stefan@datenfreihafen.org>
   8  *
   9  * Based on at86rf230.c and spi_atusb.c.
  10  * at86rf230.c is
  11  * Copyright (C) 2009 Siemens AG
  12  * Written by: Dmitry Eremin-Solenikov <dmitry.baryshkov@siemens.com>
  13  *
  14  * spi_atusb.c is
  15  * Copyright (c) 2011 Richard Sharpe <realrichardsharpe@gmail.com>
  16  * Copyright (c) 2011 Stefan Schmidt <stefan@datenfreihafen.org>
  17  * Copyright (c) 2011 Werner Almesberger <werner@almesberger.net>
  18  *
  19  * USB initialization is
  20  * Copyright (c) 2013 Alexander Aring <alex.aring@gmail.com>
  21  *
  22  * Busware HUL support is
  23  * Copyright (c) 2017 Josef Filzmaier <j.filzmaier@gmx.at>
  24  */
  25 
  26 #include <linux/kernel.h>
  27 #include <linux/slab.h>
  28 #include <linux/module.h>
  29 #include <linux/jiffies.h>
  30 #include <linux/usb.h>
  31 #include <linux/skbuff.h>
  32 
  33 #include <net/cfg802154.h>
  34 #include <net/mac802154.h>
  35 
  36 #include "at86rf230.h"
  37 #include "atusb.h"
  38 
  39 #define ATUSB_JEDEC_ATMEL       0x1f    /* JEDEC manufacturer ID */
  40 
  41 #define ATUSB_NUM_RX_URBS       4       /* allow for a bit of local latency */
  42 #define ATUSB_ALLOC_DELAY_MS    100     /* delay after failed allocation */
  43 #define ATUSB_TX_TIMEOUT_MS     200     /* on the air timeout */
  44 
  45 struct atusb {
  46         struct ieee802154_hw *hw;
  47         struct usb_device *usb_dev;
  48         struct atusb_chip_data *data;
  49         int shutdown;                   /* non-zero if shutting down */
  50         int err;                        /* set by first error */
  51 
  52         /* RX variables */
  53         struct delayed_work work;       /* memory allocations */
  54         struct usb_anchor idle_urbs;    /* URBs waiting to be submitted */
  55         struct usb_anchor rx_urbs;      /* URBs waiting for reception */
  56 
  57         /* TX variables */
  58         struct usb_ctrlrequest tx_dr;
  59         struct urb *tx_urb;
  60         struct sk_buff *tx_skb;
  61         u8 tx_ack_seq;          /* current TX ACK sequence number */
  62 
  63         /* Firmware variable */
  64         unsigned char fw_ver_maj;       /* Firmware major version number */
  65         unsigned char fw_ver_min;       /* Firmware minor version number */
  66         unsigned char fw_hw_type;       /* Firmware hardware type */
  67 };
  68 
  69 struct atusb_chip_data {
  70         u16 t_channel_switch;
  71         int rssi_base_val;
  72 
  73         int (*set_channel)(struct ieee802154_hw*, u8, u8);
  74         int (*set_txpower)(struct ieee802154_hw*, s32);
  75 };
  76 
  77 /* ----- USB commands without data ----------------------------------------- */
  78 
  79 /* To reduce the number of error checks in the code, we record the first error
  80  * in atusb->err and reject all subsequent requests until the error is cleared.
  81  */
  82 
  83 static int atusb_control_msg(struct atusb *atusb, unsigned int pipe,
  84                              __u8 request, __u8 requesttype,
  85                              __u16 value, __u16 index,
  86                              void *data, __u16 size, int timeout)
  87 {
  88         struct usb_device *usb_dev = atusb->usb_dev;
  89         int ret;
  90 
  91         if (atusb->err)
  92                 return atusb->err;
  93 
  94         ret = usb_control_msg(usb_dev, pipe, request, requesttype,
  95                               value, index, data, size, timeout);
  96         if (ret < 0) {
  97                 atusb->err = ret;
  98                 dev_err(&usb_dev->dev,
  99                         "%s: req 0x%02x val 0x%x idx 0x%x, error %d\n",
 100                         __func__, request, value, index, ret);
 101         }
 102         return ret;
 103 }
 104 
 105 static int atusb_command(struct atusb *atusb, u8 cmd, u8 arg)
 106 {
 107         struct usb_device *usb_dev = atusb->usb_dev;
 108 
 109         dev_dbg(&usb_dev->dev, "%s: cmd = 0x%x\n", __func__, cmd);
 110         return atusb_control_msg(atusb, usb_sndctrlpipe(usb_dev, 0),
 111                                  cmd, ATUSB_REQ_TO_DEV, arg, 0, NULL, 0, 1000);
 112 }
 113 
 114 static int atusb_write_reg(struct atusb *atusb, u8 reg, u8 value)
 115 {
 116         struct usb_device *usb_dev = atusb->usb_dev;
 117 
 118         dev_dbg(&usb_dev->dev, "%s: 0x%02x <- 0x%02x\n", __func__, reg, value);
 119         return atusb_control_msg(atusb, usb_sndctrlpipe(usb_dev, 0),
 120                                  ATUSB_REG_WRITE, ATUSB_REQ_TO_DEV,
 121                                  value, reg, NULL, 0, 1000);
 122 }
 123 
 124 static int atusb_read_reg(struct atusb *atusb, u8 reg)
 125 {
 126         struct usb_device *usb_dev = atusb->usb_dev;
 127         int ret;
 128         u8 *buffer;
 129         u8 value;
 130 
 131         buffer = kmalloc(1, GFP_KERNEL);
 132         if (!buffer)
 133                 return -ENOMEM;
 134 
 135         dev_dbg(&usb_dev->dev, "%s: reg = 0x%x\n", __func__, reg);
 136         ret = atusb_control_msg(atusb, usb_rcvctrlpipe(usb_dev, 0),
 137                                 ATUSB_REG_READ, ATUSB_REQ_FROM_DEV,
 138                                 0, reg, buffer, 1, 1000);
 139 
 140         if (ret >= 0) {
 141                 value = buffer[0];
 142                 kfree(buffer);
 143                 return value;
 144         } else {
 145                 kfree(buffer);
 146                 return ret;
 147         }
 148 }
 149 
 150 static int atusb_write_subreg(struct atusb *atusb, u8 reg, u8 mask,
 151                               u8 shift, u8 value)
 152 {
 153         struct usb_device *usb_dev = atusb->usb_dev;
 154         u8 orig, tmp;
 155         int ret = 0;
 156 
 157         dev_dbg(&usb_dev->dev, "%s: 0x%02x <- 0x%02x\n", __func__, reg, value);
 158 
 159         orig = atusb_read_reg(atusb, reg);
 160 
 161         /* Write the value only into that part of the register which is allowed
 162          * by the mask. All other bits stay as before.
 163          */
 164         tmp = orig & ~mask;
 165         tmp |= (value << shift) & mask;
 166 
 167         if (tmp != orig)
 168                 ret = atusb_write_reg(atusb, reg, tmp);
 169 
 170         return ret;
 171 }
 172 
 173 static int atusb_read_subreg(struct atusb *lp,
 174                              unsigned int addr, unsigned int mask,
 175                              unsigned int shift)
 176 {
 177         int rc;
 178 
 179         rc = atusb_read_reg(lp, addr);
 180         rc = (rc & mask) >> shift;
 181 
 182         return rc;
 183 }
 184 
 185 static int atusb_get_and_clear_error(struct atusb *atusb)
 186 {
 187         int err = atusb->err;
 188 
 189         atusb->err = 0;
 190         return err;
 191 }
 192 
 193 /* ----- skb allocation ---------------------------------------------------- */
 194 
 195 #define MAX_PSDU        127
 196 #define MAX_RX_XFER     (1 + MAX_PSDU + 2 + 1)  /* PHR+PSDU+CRC+LQI */
 197 
 198 #define SKB_ATUSB(skb)  (*(struct atusb **)(skb)->cb)
 199 
 200 static void atusb_in(struct urb *urb);
 201 
 202 static int atusb_submit_rx_urb(struct atusb *atusb, struct urb *urb)
 203 {
 204         struct usb_device *usb_dev = atusb->usb_dev;
 205         struct sk_buff *skb = urb->context;
 206         int ret;
 207 
 208         if (!skb) {
 209                 skb = alloc_skb(MAX_RX_XFER, GFP_KERNEL);
 210                 if (!skb) {
 211                         dev_warn_ratelimited(&usb_dev->dev,
 212                                              "atusb_in: can't allocate skb\n");
 213                         return -ENOMEM;
 214                 }
 215                 skb_put(skb, MAX_RX_XFER);
 216                 SKB_ATUSB(skb) = atusb;
 217         }
 218 
 219         usb_fill_bulk_urb(urb, usb_dev, usb_rcvbulkpipe(usb_dev, 1),
 220                           skb->data, MAX_RX_XFER, atusb_in, skb);
 221         usb_anchor_urb(urb, &atusb->rx_urbs);
 222 
 223         ret = usb_submit_urb(urb, GFP_KERNEL);
 224         if (ret) {
 225                 usb_unanchor_urb(urb);
 226                 kfree_skb(skb);
 227                 urb->context = NULL;
 228         }
 229         return ret;
 230 }
 231 
 232 static void atusb_work_urbs(struct work_struct *work)
 233 {
 234         struct atusb *atusb =
 235             container_of(to_delayed_work(work), struct atusb, work);
 236         struct usb_device *usb_dev = atusb->usb_dev;
 237         struct urb *urb;
 238         int ret;
 239 
 240         if (atusb->shutdown)
 241                 return;
 242 
 243         do {
 244                 urb = usb_get_from_anchor(&atusb->idle_urbs);
 245                 if (!urb)
 246                         return;
 247                 ret = atusb_submit_rx_urb(atusb, urb);
 248         } while (!ret);
 249 
 250         usb_anchor_urb(urb, &atusb->idle_urbs);
 251         dev_warn_ratelimited(&usb_dev->dev,
 252                              "atusb_in: can't allocate/submit URB (%d)\n", ret);
 253         schedule_delayed_work(&atusb->work,
 254                               msecs_to_jiffies(ATUSB_ALLOC_DELAY_MS) + 1);
 255 }
 256 
 257 /* ----- Asynchronous USB -------------------------------------------------- */
 258 
 259 static void atusb_tx_done(struct atusb *atusb, u8 seq)
 260 {
 261         struct usb_device *usb_dev = atusb->usb_dev;
 262         u8 expect = atusb->tx_ack_seq;
 263 
 264         dev_dbg(&usb_dev->dev, "%s (0x%02x/0x%02x)\n", __func__, seq, expect);
 265         if (seq == expect) {
 266                 /* TODO check for ifs handling in firmware */
 267                 ieee802154_xmit_complete(atusb->hw, atusb->tx_skb, false);
 268         } else {
 269                 /* TODO I experience this case when atusb has a tx complete
 270                  * irq before probing, we should fix the firmware it's an
 271                  * unlikely case now that seq == expect is then true, but can
 272                  * happen and fail with a tx_skb = NULL;
 273                  */
 274                 ieee802154_wake_queue(atusb->hw);
 275                 if (atusb->tx_skb)
 276                         dev_kfree_skb_irq(atusb->tx_skb);
 277         }
 278 }
 279 
 280 static void atusb_in_good(struct urb *urb)
 281 {
 282         struct usb_device *usb_dev = urb->dev;
 283         struct sk_buff *skb = urb->context;
 284         struct atusb *atusb = SKB_ATUSB(skb);
 285         u8 len, lqi;
 286 
 287         if (!urb->actual_length) {
 288                 dev_dbg(&usb_dev->dev, "atusb_in: zero-sized URB ?\n");
 289                 return;
 290         }
 291 
 292         len = *skb->data;
 293 
 294         if (urb->actual_length == 1) {
 295                 atusb_tx_done(atusb, len);
 296                 return;
 297         }
 298 
 299         if (len + 1 > urb->actual_length - 1) {
 300                 dev_dbg(&usb_dev->dev, "atusb_in: frame len %d+1 > URB %u-1\n",
 301                         len, urb->actual_length);
 302                 return;
 303         }
 304 
 305         if (!ieee802154_is_valid_psdu_len(len)) {
 306                 dev_dbg(&usb_dev->dev, "atusb_in: frame corrupted\n");
 307                 return;
 308         }
 309 
 310         lqi = skb->data[len + 1];
 311         dev_dbg(&usb_dev->dev, "atusb_in: rx len %d lqi 0x%02x\n", len, lqi);
 312         skb_pull(skb, 1);       /* remove PHR */
 313         skb_trim(skb, len);     /* get payload only */
 314         ieee802154_rx_irqsafe(atusb->hw, skb, lqi);
 315         urb->context = NULL;    /* skb is gone */
 316 }
 317 
 318 static void atusb_in(struct urb *urb)
 319 {
 320         struct usb_device *usb_dev = urb->dev;
 321         struct sk_buff *skb = urb->context;
 322         struct atusb *atusb = SKB_ATUSB(skb);
 323 
 324         dev_dbg(&usb_dev->dev, "%s: status %d len %d\n", __func__,
 325                 urb->status, urb->actual_length);
 326         if (urb->status) {
 327                 if (urb->status == -ENOENT) { /* being killed */
 328                         kfree_skb(skb);
 329                         urb->context = NULL;
 330                         return;
 331                 }
 332                 dev_dbg(&usb_dev->dev, "%s: URB error %d\n", __func__, urb->status);
 333         } else {
 334                 atusb_in_good(urb);
 335         }
 336 
 337         usb_anchor_urb(urb, &atusb->idle_urbs);
 338         if (!atusb->shutdown)
 339                 schedule_delayed_work(&atusb->work, 0);
 340 }
 341 
 342 /* ----- URB allocation/deallocation --------------------------------------- */
 343 
 344 static void atusb_free_urbs(struct atusb *atusb)
 345 {
 346         struct urb *urb;
 347 
 348         while (1) {
 349                 urb = usb_get_from_anchor(&atusb->idle_urbs);
 350                 if (!urb)
 351                         break;
 352                 kfree_skb(urb->context);
 353                 usb_free_urb(urb);
 354         }
 355 }
 356 
 357 static int atusb_alloc_urbs(struct atusb *atusb, int n)
 358 {
 359         struct urb *urb;
 360 
 361         while (n) {
 362                 urb = usb_alloc_urb(0, GFP_KERNEL);
 363                 if (!urb) {
 364                         atusb_free_urbs(atusb);
 365                         return -ENOMEM;
 366                 }
 367                 usb_anchor_urb(urb, &atusb->idle_urbs);
 368                 n--;
 369         }
 370         return 0;
 371 }
 372 
 373 /* ----- IEEE 802.15.4 interface operations -------------------------------- */
 374 
 375 static void atusb_xmit_complete(struct urb *urb)
 376 {
 377         dev_dbg(&urb->dev->dev, "atusb_xmit urb completed");
 378 }
 379 
 380 static int atusb_xmit(struct ieee802154_hw *hw, struct sk_buff *skb)
 381 {
 382         struct atusb *atusb = hw->priv;
 383         struct usb_device *usb_dev = atusb->usb_dev;
 384         int ret;
 385 
 386         dev_dbg(&usb_dev->dev, "%s (%d)\n", __func__, skb->len);
 387         atusb->tx_skb = skb;
 388         atusb->tx_ack_seq++;
 389         atusb->tx_dr.wIndex = cpu_to_le16(atusb->tx_ack_seq);
 390         atusb->tx_dr.wLength = cpu_to_le16(skb->len);
 391 
 392         usb_fill_control_urb(atusb->tx_urb, usb_dev,
 393                              usb_sndctrlpipe(usb_dev, 0),
 394                              (unsigned char *)&atusb->tx_dr, skb->data,
 395                              skb->len, atusb_xmit_complete, NULL);
 396         ret = usb_submit_urb(atusb->tx_urb, GFP_ATOMIC);
 397         dev_dbg(&usb_dev->dev, "%s done (%d)\n", __func__, ret);
 398         return ret;
 399 }
 400 
 401 static int atusb_ed(struct ieee802154_hw *hw, u8 *level)
 402 {
 403         WARN_ON(!level);
 404         *level = 0xbe;
 405         return 0;
 406 }
 407 
 408 static int atusb_set_hw_addr_filt(struct ieee802154_hw *hw,
 409                                   struct ieee802154_hw_addr_filt *filt,
 410                                   unsigned long changed)
 411 {
 412         struct atusb *atusb = hw->priv;
 413         struct device *dev = &atusb->usb_dev->dev;
 414 
 415         if (changed & IEEE802154_AFILT_SADDR_CHANGED) {
 416                 u16 addr = le16_to_cpu(filt->short_addr);
 417 
 418                 dev_vdbg(dev, "%s called for saddr\n", __func__);
 419                 atusb_write_reg(atusb, RG_SHORT_ADDR_0, addr);
 420                 atusb_write_reg(atusb, RG_SHORT_ADDR_1, addr >> 8);
 421         }
 422 
 423         if (changed & IEEE802154_AFILT_PANID_CHANGED) {
 424                 u16 pan = le16_to_cpu(filt->pan_id);
 425 
 426                 dev_vdbg(dev, "%s called for pan id\n", __func__);
 427                 atusb_write_reg(atusb, RG_PAN_ID_0, pan);
 428                 atusb_write_reg(atusb, RG_PAN_ID_1, pan >> 8);
 429         }
 430 
 431         if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) {
 432                 u8 i, addr[IEEE802154_EXTENDED_ADDR_LEN];
 433 
 434                 memcpy(addr, &filt->ieee_addr, IEEE802154_EXTENDED_ADDR_LEN);
 435                 dev_vdbg(dev, "%s called for IEEE addr\n", __func__);
 436                 for (i = 0; i < 8; i++)
 437                         atusb_write_reg(atusb, RG_IEEE_ADDR_0 + i, addr[i]);
 438         }
 439 
 440         if (changed & IEEE802154_AFILT_PANC_CHANGED) {
 441                 dev_vdbg(dev, "%s called for panc change\n", __func__);
 442                 if (filt->pan_coord)
 443                         atusb_write_subreg(atusb, SR_AACK_I_AM_COORD, 1);
 444                 else
 445                         atusb_write_subreg(atusb, SR_AACK_I_AM_COORD, 0);
 446         }
 447 
 448         return atusb_get_and_clear_error(atusb);
 449 }
 450 
 451 static int atusb_start(struct ieee802154_hw *hw)
 452 {
 453         struct atusb *atusb = hw->priv;
 454         struct usb_device *usb_dev = atusb->usb_dev;
 455         int ret;
 456 
 457         dev_dbg(&usb_dev->dev, "%s\n", __func__);
 458         schedule_delayed_work(&atusb->work, 0);
 459         atusb_command(atusb, ATUSB_RX_MODE, 1);
 460         ret = atusb_get_and_clear_error(atusb);
 461         if (ret < 0)
 462                 usb_kill_anchored_urbs(&atusb->idle_urbs);
 463         return ret;
 464 }
 465 
 466 static void atusb_stop(struct ieee802154_hw *hw)
 467 {
 468         struct atusb *atusb = hw->priv;
 469         struct usb_device *usb_dev = atusb->usb_dev;
 470 
 471         dev_dbg(&usb_dev->dev, "%s\n", __func__);
 472         usb_kill_anchored_urbs(&atusb->idle_urbs);
 473         atusb_command(atusb, ATUSB_RX_MODE, 0);
 474         atusb_get_and_clear_error(atusb);
 475 }
 476 
 477 #define ATUSB_MAX_TX_POWERS 0xF
 478 static const s32 atusb_powers[ATUSB_MAX_TX_POWERS + 1] = {
 479         300, 280, 230, 180, 130, 70, 0, -100, -200, -300, -400, -500, -700,
 480         -900, -1200, -1700,
 481 };
 482 
 483 static int
 484 atusb_txpower(struct ieee802154_hw *hw, s32 mbm)
 485 {
 486         struct atusb *atusb = hw->priv;
 487 
 488         if (atusb->data)
 489                 return atusb->data->set_txpower(hw, mbm);
 490         else
 491                 return -ENOTSUPP;
 492 }
 493 
 494 static int
 495 atusb_set_txpower(struct ieee802154_hw *hw, s32 mbm)
 496 {
 497         struct atusb *atusb = hw->priv;
 498         u32 i;
 499 
 500         for (i = 0; i < hw->phy->supported.tx_powers_size; i++) {
 501                 if (hw->phy->supported.tx_powers[i] == mbm)
 502                         return atusb_write_subreg(atusb, SR_TX_PWR_23X, i);
 503         }
 504 
 505         return -EINVAL;
 506 }
 507 
 508 static int
 509 hulusb_set_txpower(struct ieee802154_hw *hw, s32 mbm)
 510 {
 511         u32 i;
 512 
 513         for (i = 0; i < hw->phy->supported.tx_powers_size; i++) {
 514                 if (hw->phy->supported.tx_powers[i] == mbm)
 515                         return atusb_write_subreg(hw->priv, SR_TX_PWR_212, i);
 516         }
 517 
 518         return -EINVAL;
 519 }
 520 
 521 #define ATUSB_MAX_ED_LEVELS 0xF
 522 static const s32 atusb_ed_levels[ATUSB_MAX_ED_LEVELS + 1] = {
 523         -9100, -8900, -8700, -8500, -8300, -8100, -7900, -7700, -7500, -7300,
 524         -7100, -6900, -6700, -6500, -6300, -6100,
 525 };
 526 
 527 #define AT86RF212_MAX_TX_POWERS 0x1F
 528 static const s32 at86rf212_powers[AT86RF212_MAX_TX_POWERS + 1] = {
 529         500, 400, 300, 200, 100, 0, -100, -200, -300, -400, -500, -600, -700,
 530         -800, -900, -1000, -1100, -1200, -1300, -1400, -1500, -1600, -1700,
 531         -1800, -1900, -2000, -2100, -2200, -2300, -2400, -2500, -2600,
 532 };
 533 
 534 #define AT86RF2XX_MAX_ED_LEVELS 0xF
 535 static const s32 at86rf212_ed_levels_100[AT86RF2XX_MAX_ED_LEVELS + 1] = {
 536         -10000, -9800, -9600, -9400, -9200, -9000, -8800, -8600, -8400, -8200,
 537         -8000, -7800, -7600, -7400, -7200, -7000,
 538 };
 539 
 540 static const s32 at86rf212_ed_levels_98[AT86RF2XX_MAX_ED_LEVELS + 1] = {
 541         -9800, -9600, -9400, -9200, -9000, -8800, -8600, -8400, -8200, -8000,
 542         -7800, -7600, -7400, -7200, -7000, -6800,
 543 };
 544 
 545 static int
 546 atusb_set_cca_mode(struct ieee802154_hw *hw, const struct wpan_phy_cca *cca)
 547 {
 548         struct atusb *atusb = hw->priv;
 549         u8 val;
 550 
 551         /* mapping 802.15.4 to driver spec */
 552         switch (cca->mode) {
 553         case NL802154_CCA_ENERGY:
 554                 val = 1;
 555                 break;
 556         case NL802154_CCA_CARRIER:
 557                 val = 2;
 558                 break;
 559         case NL802154_CCA_ENERGY_CARRIER:
 560                 switch (cca->opt) {
 561                 case NL802154_CCA_OPT_ENERGY_CARRIER_AND:
 562                         val = 3;
 563                         break;
 564                 case NL802154_CCA_OPT_ENERGY_CARRIER_OR:
 565                         val = 0;
 566                         break;
 567                 default:
 568                         return -EINVAL;
 569                 }
 570                 break;
 571         default:
 572                 return -EINVAL;
 573         }
 574 
 575         return atusb_write_subreg(atusb, SR_CCA_MODE, val);
 576 }
 577 
 578 static int hulusb_set_cca_ed_level(struct atusb *lp, int rssi_base_val)
 579 {
 580         unsigned int cca_ed_thres;
 581 
 582         cca_ed_thres = atusb_read_subreg(lp, SR_CCA_ED_THRES);
 583 
 584         switch (rssi_base_val) {
 585         case -98:
 586                 lp->hw->phy->supported.cca_ed_levels = at86rf212_ed_levels_98;
 587                 lp->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(at86rf212_ed_levels_98);
 588                 lp->hw->phy->cca_ed_level = at86rf212_ed_levels_98[cca_ed_thres];
 589                 break;
 590         case -100:
 591                 lp->hw->phy->supported.cca_ed_levels = at86rf212_ed_levels_100;
 592                 lp->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(at86rf212_ed_levels_100);
 593                 lp->hw->phy->cca_ed_level = at86rf212_ed_levels_100[cca_ed_thres];
 594                 break;
 595         default:
 596                 WARN_ON(1);
 597         }
 598 
 599         return 0;
 600 }
 601 
 602 static int
 603 atusb_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm)
 604 {
 605         struct atusb *atusb = hw->priv;
 606         u32 i;
 607 
 608         for (i = 0; i < hw->phy->supported.cca_ed_levels_size; i++) {
 609                 if (hw->phy->supported.cca_ed_levels[i] == mbm)
 610                         return atusb_write_subreg(atusb, SR_CCA_ED_THRES, i);
 611         }
 612 
 613         return -EINVAL;
 614 }
 615 
 616 static int atusb_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
 617 {
 618         struct atusb *atusb = hw->priv;
 619         int ret = -ENOTSUPP;
 620 
 621         if (atusb->data) {
 622                 ret = atusb->data->set_channel(hw, page, channel);
 623                 /* @@@ ugly synchronization */
 624                 msleep(atusb->data->t_channel_switch);
 625         }
 626 
 627         return ret;
 628 }
 629 
 630 static int atusb_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
 631 {
 632         struct atusb *atusb = hw->priv;
 633         int ret;
 634 
 635         ret = atusb_write_subreg(atusb, SR_CHANNEL, channel);
 636         if (ret < 0)
 637                 return ret;
 638         return 0;
 639 }
 640 
 641 static int hulusb_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
 642 {
 643         int rc;
 644         int rssi_base_val;
 645 
 646         struct atusb *lp = hw->priv;
 647 
 648         if (channel == 0)
 649                 rc = atusb_write_subreg(lp, SR_SUB_MODE, 0);
 650         else
 651                 rc = atusb_write_subreg(lp, SR_SUB_MODE, 1);
 652         if (rc < 0)
 653                 return rc;
 654 
 655         if (page == 0) {
 656                 rc = atusb_write_subreg(lp, SR_BPSK_QPSK, 0);
 657                 rssi_base_val = -100;
 658         } else {
 659                 rc = atusb_write_subreg(lp, SR_BPSK_QPSK, 1);
 660                 rssi_base_val = -98;
 661         }
 662         if (rc < 0)
 663                 return rc;
 664 
 665         rc = hulusb_set_cca_ed_level(lp, rssi_base_val);
 666         if (rc < 0)
 667                 return rc;
 668 
 669         /* This sets the symbol_duration according frequency on the 212.
 670          * TODO move this handling while set channel and page in cfg802154.
 671          * We can do that, this timings are according 802.15.4 standard.
 672          * If we do that in cfg802154, this is a more generic calculation.
 673          *
 674          * This should also protected from ifs_timer. Means cancel timer and
 675          * init with a new value. For now, this is okay.
 676          */
 677         if (channel == 0) {
 678                 if (page == 0) {
 679                         /* SUB:0 and BPSK:0 -> BPSK-20 */
 680                         lp->hw->phy->symbol_duration = 50;
 681                 } else {
 682                         /* SUB:1 and BPSK:0 -> BPSK-40 */
 683                         lp->hw->phy->symbol_duration = 25;
 684                 }
 685         } else {
 686                 if (page == 0)
 687                         /* SUB:0 and BPSK:1 -> OQPSK-100/200/400 */
 688                         lp->hw->phy->symbol_duration = 40;
 689                 else
 690                         /* SUB:1 and BPSK:1 -> OQPSK-250/500/1000 */
 691                         lp->hw->phy->symbol_duration = 16;
 692         }
 693 
 694         lp->hw->phy->lifs_period = IEEE802154_LIFS_PERIOD *
 695                                    lp->hw->phy->symbol_duration;
 696         lp->hw->phy->sifs_period = IEEE802154_SIFS_PERIOD *
 697                                    lp->hw->phy->symbol_duration;
 698 
 699         return atusb_write_subreg(lp, SR_CHANNEL, channel);
 700 }
 701 
 702 static int
 703 atusb_set_csma_params(struct ieee802154_hw *hw, u8 min_be, u8 max_be, u8 retries)
 704 {
 705         struct atusb *atusb = hw->priv;
 706         int ret;
 707 
 708         ret = atusb_write_subreg(atusb, SR_MIN_BE, min_be);
 709         if (ret)
 710                 return ret;
 711 
 712         ret = atusb_write_subreg(atusb, SR_MAX_BE, max_be);
 713         if (ret)
 714                 return ret;
 715 
 716         return atusb_write_subreg(atusb, SR_MAX_CSMA_RETRIES, retries);
 717 }
 718 
 719 static int
 720 hulusb_set_lbt(struct ieee802154_hw *hw, bool on)
 721 {
 722         struct atusb *atusb = hw->priv;
 723 
 724         return atusb_write_subreg(atusb, SR_CSMA_LBT_MODE, on);
 725 }
 726 
 727 static int
 728 atusb_set_frame_retries(struct ieee802154_hw *hw, s8 retries)
 729 {
 730         struct atusb *atusb = hw->priv;
 731 
 732         return atusb_write_subreg(atusb, SR_MAX_FRAME_RETRIES, retries);
 733 }
 734 
 735 static int
 736 atusb_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on)
 737 {
 738         struct atusb *atusb = hw->priv;
 739         int ret;
 740 
 741         if (on) {
 742                 ret = atusb_write_subreg(atusb, SR_AACK_DIS_ACK, 1);
 743                 if (ret < 0)
 744                         return ret;
 745 
 746                 ret = atusb_write_subreg(atusb, SR_AACK_PROM_MODE, 1);
 747                 if (ret < 0)
 748                         return ret;
 749         } else {
 750                 ret = atusb_write_subreg(atusb, SR_AACK_PROM_MODE, 0);
 751                 if (ret < 0)
 752                         return ret;
 753 
 754                 ret = atusb_write_subreg(atusb, SR_AACK_DIS_ACK, 0);
 755                 if (ret < 0)
 756                         return ret;
 757         }
 758 
 759         return 0;
 760 }
 761 
 762 static struct atusb_chip_data atusb_chip_data = {
 763         .t_channel_switch = 1,
 764         .rssi_base_val = -91,
 765         .set_txpower = atusb_set_txpower,
 766         .set_channel = atusb_set_channel,
 767 };
 768 
 769 static struct atusb_chip_data hulusb_chip_data = {
 770         .t_channel_switch = 11,
 771         .rssi_base_val = -100,
 772         .set_txpower = hulusb_set_txpower,
 773         .set_channel = hulusb_set_channel,
 774 };
 775 
 776 static const struct ieee802154_ops atusb_ops = {
 777         .owner                  = THIS_MODULE,
 778         .xmit_async             = atusb_xmit,
 779         .ed                     = atusb_ed,
 780         .set_channel            = atusb_channel,
 781         .start                  = atusb_start,
 782         .stop                   = atusb_stop,
 783         .set_hw_addr_filt       = atusb_set_hw_addr_filt,
 784         .set_txpower            = atusb_txpower,
 785         .set_lbt                = hulusb_set_lbt,
 786         .set_cca_mode           = atusb_set_cca_mode,
 787         .set_cca_ed_level       = atusb_set_cca_ed_level,
 788         .set_csma_params        = atusb_set_csma_params,
 789         .set_frame_retries      = atusb_set_frame_retries,
 790         .set_promiscuous_mode   = atusb_set_promiscuous_mode,
 791 };
 792 
 793 /* ----- Firmware and chip version information ----------------------------- */
 794 
 795 static int atusb_get_and_show_revision(struct atusb *atusb)
 796 {
 797         struct usb_device *usb_dev = atusb->usb_dev;
 798         char *hw_name;
 799         unsigned char *buffer;
 800         int ret;
 801 
 802         buffer = kmalloc(3, GFP_KERNEL);
 803         if (!buffer)
 804                 return -ENOMEM;
 805 
 806         /* Get a couple of the ATMega Firmware values */
 807         ret = atusb_control_msg(atusb, usb_rcvctrlpipe(usb_dev, 0),
 808                                 ATUSB_ID, ATUSB_REQ_FROM_DEV, 0, 0,
 809                                 buffer, 3, 1000);
 810         if (ret >= 0) {
 811                 atusb->fw_ver_maj = buffer[0];
 812                 atusb->fw_ver_min = buffer[1];
 813                 atusb->fw_hw_type = buffer[2];
 814 
 815                 switch (atusb->fw_hw_type) {
 816                 case ATUSB_HW_TYPE_100813:
 817                 case ATUSB_HW_TYPE_101216:
 818                 case ATUSB_HW_TYPE_110131:
 819                         hw_name = "ATUSB";
 820                         atusb->data = &atusb_chip_data;
 821                         break;
 822                 case ATUSB_HW_TYPE_RZUSB:
 823                         hw_name = "RZUSB";
 824                         atusb->data = &atusb_chip_data;
 825                         break;
 826                 case ATUSB_HW_TYPE_HULUSB:
 827                         hw_name = "HULUSB";
 828                         atusb->data = &hulusb_chip_data;
 829                         break;
 830                 default:
 831                         hw_name = "UNKNOWN";
 832                         atusb->err = -ENOTSUPP;
 833                         ret = -ENOTSUPP;
 834                         break;
 835                 }
 836 
 837                 dev_info(&usb_dev->dev,
 838                          "Firmware: major: %u, minor: %u, hardware type: %s (%d)\n",
 839                          atusb->fw_ver_maj, atusb->fw_ver_min, hw_name,
 840                          atusb->fw_hw_type);
 841         }
 842         if (atusb->fw_ver_maj == 0 && atusb->fw_ver_min < 2) {
 843                 dev_info(&usb_dev->dev,
 844                          "Firmware version (%u.%u) predates our first public release.",
 845                          atusb->fw_ver_maj, atusb->fw_ver_min);
 846                 dev_info(&usb_dev->dev, "Please update to version 0.2 or newer");
 847         }
 848 
 849         kfree(buffer);
 850         return ret;
 851 }
 852 
 853 static int atusb_get_and_show_build(struct atusb *atusb)
 854 {
 855         struct usb_device *usb_dev = atusb->usb_dev;
 856         char *build;
 857         int ret;
 858 
 859         build = kmalloc(ATUSB_BUILD_SIZE + 1, GFP_KERNEL);
 860         if (!build)
 861                 return -ENOMEM;
 862 
 863         ret = atusb_control_msg(atusb, usb_rcvctrlpipe(usb_dev, 0),
 864                                 ATUSB_BUILD, ATUSB_REQ_FROM_DEV, 0, 0,
 865                                 build, ATUSB_BUILD_SIZE, 1000);
 866         if (ret >= 0) {
 867                 build[ret] = 0;
 868                 dev_info(&usb_dev->dev, "Firmware: build %s\n", build);
 869         }
 870 
 871         kfree(build);
 872         return ret;
 873 }
 874 
 875 static int atusb_get_and_conf_chip(struct atusb *atusb)
 876 {
 877         struct usb_device *usb_dev = atusb->usb_dev;
 878         u8 man_id_0, man_id_1, part_num, version_num;
 879         const char *chip;
 880         struct ieee802154_hw *hw = atusb->hw;
 881 
 882         man_id_0 = atusb_read_reg(atusb, RG_MAN_ID_0);
 883         man_id_1 = atusb_read_reg(atusb, RG_MAN_ID_1);
 884         part_num = atusb_read_reg(atusb, RG_PART_NUM);
 885         version_num = atusb_read_reg(atusb, RG_VERSION_NUM);
 886 
 887         if (atusb->err)
 888                 return atusb->err;
 889 
 890         hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | IEEE802154_HW_AFILT |
 891                     IEEE802154_HW_PROMISCUOUS | IEEE802154_HW_CSMA_PARAMS;
 892 
 893         hw->phy->flags = WPAN_PHY_FLAG_TXPOWER | WPAN_PHY_FLAG_CCA_ED_LEVEL |
 894                          WPAN_PHY_FLAG_CCA_MODE;
 895 
 896         hw->phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) |
 897                                        BIT(NL802154_CCA_CARRIER) |
 898                                        BIT(NL802154_CCA_ENERGY_CARRIER);
 899         hw->phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND) |
 900                                       BIT(NL802154_CCA_OPT_ENERGY_CARRIER_OR);
 901 
 902         hw->phy->cca.mode = NL802154_CCA_ENERGY;
 903 
 904         hw->phy->current_page = 0;
 905 
 906         if ((man_id_1 << 8 | man_id_0) != ATUSB_JEDEC_ATMEL) {
 907                 dev_err(&usb_dev->dev,
 908                         "non-Atmel transceiver xxxx%02x%02x\n",
 909                         man_id_1, man_id_0);
 910                 goto fail;
 911         }
 912 
 913         switch (part_num) {
 914         case 2:
 915                 chip = "AT86RF230";
 916                 atusb->hw->phy->supported.channels[0] = 0x7FFF800;
 917                 atusb->hw->phy->current_channel = 11;   /* reset default */
 918                 atusb->hw->phy->symbol_duration = 16;
 919                 atusb->hw->phy->supported.tx_powers = atusb_powers;
 920                 atusb->hw->phy->supported.tx_powers_size = ARRAY_SIZE(atusb_powers);
 921                 hw->phy->supported.cca_ed_levels = atusb_ed_levels;
 922                 hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(atusb_ed_levels);
 923                 break;
 924         case 3:
 925                 chip = "AT86RF231";
 926                 atusb->hw->phy->supported.channels[0] = 0x7FFF800;
 927                 atusb->hw->phy->current_channel = 11;   /* reset default */
 928                 atusb->hw->phy->symbol_duration = 16;
 929                 atusb->hw->phy->supported.tx_powers = atusb_powers;
 930                 atusb->hw->phy->supported.tx_powers_size = ARRAY_SIZE(atusb_powers);
 931                 hw->phy->supported.cca_ed_levels = atusb_ed_levels;
 932                 hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(atusb_ed_levels);
 933                 break;
 934         case 7:
 935                 chip = "AT86RF212";
 936                 atusb->hw->flags |= IEEE802154_HW_LBT;
 937                 atusb->hw->phy->supported.channels[0] = 0x00007FF;
 938                 atusb->hw->phy->supported.channels[2] = 0x00007FF;
 939                 atusb->hw->phy->current_channel = 5;
 940                 atusb->hw->phy->symbol_duration = 25;
 941                 atusb->hw->phy->supported.lbt = NL802154_SUPPORTED_BOOL_BOTH;
 942                 atusb->hw->phy->supported.tx_powers = at86rf212_powers;
 943                 atusb->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf212_powers);
 944                 atusb->hw->phy->supported.cca_ed_levels = at86rf212_ed_levels_100;
 945                 atusb->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(at86rf212_ed_levels_100);
 946                 break;
 947         default:
 948                 dev_err(&usb_dev->dev,
 949                         "unexpected transceiver, part 0x%02x version 0x%02x\n",
 950                         part_num, version_num);
 951                 goto fail;
 952         }
 953 
 954         hw->phy->transmit_power = hw->phy->supported.tx_powers[0];
 955         hw->phy->cca_ed_level = hw->phy->supported.cca_ed_levels[7];
 956 
 957         dev_info(&usb_dev->dev, "ATUSB: %s version %d\n", chip, version_num);
 958 
 959         return 0;
 960 
 961 fail:
 962         atusb->err = -ENODEV;
 963         return -ENODEV;
 964 }
 965 
 966 static int atusb_set_extended_addr(struct atusb *atusb)
 967 {
 968         struct usb_device *usb_dev = atusb->usb_dev;
 969         unsigned char *buffer;
 970         __le64 extended_addr;
 971         u64 addr;
 972         int ret;
 973 
 974         /* Firmware versions before 0.3 do not support the EUI64_READ command.
 975          * Just use a random address and be done.
 976          */
 977         if (atusb->fw_ver_maj == 0 && atusb->fw_ver_min < 3) {
 978                 ieee802154_random_extended_addr(&atusb->hw->phy->perm_extended_addr);
 979                 return 0;
 980         }
 981 
 982         buffer = kmalloc(IEEE802154_EXTENDED_ADDR_LEN, GFP_KERNEL);
 983         if (!buffer)
 984                 return -ENOMEM;
 985 
 986         /* Firmware is new enough so we fetch the address from EEPROM */
 987         ret = atusb_control_msg(atusb, usb_rcvctrlpipe(usb_dev, 0),
 988                                 ATUSB_EUI64_READ, ATUSB_REQ_FROM_DEV, 0, 0,
 989                                 buffer, IEEE802154_EXTENDED_ADDR_LEN, 1000);
 990         if (ret < 0) {
 991                 dev_err(&usb_dev->dev, "failed to fetch extended address, random address set\n");
 992                 ieee802154_random_extended_addr(&atusb->hw->phy->perm_extended_addr);
 993                 kfree(buffer);
 994                 return ret;
 995         }
 996 
 997         memcpy(&extended_addr, buffer, IEEE802154_EXTENDED_ADDR_LEN);
 998         /* Check if read address is not empty and the unicast bit is set correctly */
 999         if (!ieee802154_is_valid_extended_unicast_addr(extended_addr)) {
1000                 dev_info(&usb_dev->dev, "no permanent extended address found, random address set\n");
1001                 ieee802154_random_extended_addr(&atusb->hw->phy->perm_extended_addr);
1002         } else {
1003                 atusb->hw->phy->perm_extended_addr = extended_addr;
1004                 addr = swab64((__force u64)atusb->hw->phy->perm_extended_addr);
1005                 dev_info(&usb_dev->dev, "Read permanent extended address %8phC from device\n",
1006                          &addr);
1007         }
1008 
1009         kfree(buffer);
1010         return ret;
1011 }
1012 
1013 /* ----- Setup ------------------------------------------------------------- */
1014 
1015 static int atusb_probe(struct usb_interface *interface,
1016                        const struct usb_device_id *id)
1017 {
1018         struct usb_device *usb_dev = interface_to_usbdev(interface);
1019         struct ieee802154_hw *hw;
1020         struct atusb *atusb = NULL;
1021         int ret = -ENOMEM;
1022 
1023         hw = ieee802154_alloc_hw(sizeof(struct atusb), &atusb_ops);
1024         if (!hw)
1025                 return -ENOMEM;
1026 
1027         atusb = hw->priv;
1028         atusb->hw = hw;
1029         atusb->usb_dev = usb_get_dev(usb_dev);
1030         usb_set_intfdata(interface, atusb);
1031 
1032         atusb->shutdown = 0;
1033         atusb->err = 0;
1034         INIT_DELAYED_WORK(&atusb->work, atusb_work_urbs);
1035         init_usb_anchor(&atusb->idle_urbs);
1036         init_usb_anchor(&atusb->rx_urbs);
1037 
1038         if (atusb_alloc_urbs(atusb, ATUSB_NUM_RX_URBS))
1039                 goto fail;
1040 
1041         atusb->tx_dr.bRequestType = ATUSB_REQ_TO_DEV;
1042         atusb->tx_dr.bRequest = ATUSB_TX;
1043         atusb->tx_dr.wValue = cpu_to_le16(0);
1044 
1045         atusb->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1046         if (!atusb->tx_urb)
1047                 goto fail;
1048 
1049         hw->parent = &usb_dev->dev;
1050 
1051         atusb_command(atusb, ATUSB_RF_RESET, 0);
1052         atusb_get_and_conf_chip(atusb);
1053         atusb_get_and_show_revision(atusb);
1054         atusb_get_and_show_build(atusb);
1055         atusb_set_extended_addr(atusb);
1056 
1057         if ((atusb->fw_ver_maj == 0 && atusb->fw_ver_min >= 3) || atusb->fw_ver_maj > 0)
1058                 hw->flags |= IEEE802154_HW_FRAME_RETRIES;
1059 
1060         ret = atusb_get_and_clear_error(atusb);
1061         if (ret) {
1062                 dev_err(&atusb->usb_dev->dev,
1063                         "%s: initialization failed, error = %d\n",
1064                         __func__, ret);
1065                 goto fail;
1066         }
1067 
1068         ret = ieee802154_register_hw(hw);
1069         if (ret)
1070                 goto fail;
1071 
1072         /* If we just powered on, we're now in P_ON and need to enter TRX_OFF
1073          * explicitly. Any resets after that will send us straight to TRX_OFF,
1074          * making the command below redundant.
1075          */
1076         atusb_write_reg(atusb, RG_TRX_STATE, STATE_FORCE_TRX_OFF);
1077         msleep(1);      /* reset => TRX_OFF, tTR13 = 37 us */
1078 
1079 #if 0
1080         /* Calculating the maximum time available to empty the frame buffer
1081          * on reception:
1082          *
1083          * According to [1], the inter-frame gap is
1084          * R * 20 * 16 us + 128 us
1085          * where R is a random number from 0 to 7. Furthermore, we have 20 bit
1086          * times (80 us at 250 kbps) of SHR of the next frame before the
1087          * transceiver begins storing data in the frame buffer.
1088          *
1089          * This yields a minimum time of 208 us between the last data of a
1090          * frame and the first data of the next frame. This time is further
1091          * reduced by interrupt latency in the atusb firmware.
1092          *
1093          * atusb currently needs about 500 us to retrieve a maximum-sized
1094          * frame. We therefore have to allow reception of a new frame to begin
1095          * while we retrieve the previous frame.
1096          *
1097          * [1] "JN-AN-1035 Calculating data rates in an IEEE 802.15.4-based
1098          *      network", Jennic 2006.
1099          *     http://www.jennic.com/download_file.php?supportFile=JN-AN-1035%20Calculating%20802-15-4%20Data%20Rates-1v0.pdf
1100          */
1101 
1102         atusb_write_subreg(atusb, SR_RX_SAFE_MODE, 1);
1103 #endif
1104         atusb_write_reg(atusb, RG_IRQ_MASK, 0xff);
1105 
1106         ret = atusb_get_and_clear_error(atusb);
1107         if (!ret)
1108                 return 0;
1109 
1110         dev_err(&atusb->usb_dev->dev,
1111                 "%s: setup failed, error = %d\n",
1112                 __func__, ret);
1113 
1114         ieee802154_unregister_hw(hw);
1115 fail:
1116         atusb_free_urbs(atusb);
1117         usb_kill_urb(atusb->tx_urb);
1118         usb_free_urb(atusb->tx_urb);
1119         usb_put_dev(usb_dev);
1120         ieee802154_free_hw(hw);
1121         return ret;
1122 }
1123 
1124 static void atusb_disconnect(struct usb_interface *interface)
1125 {
1126         struct atusb *atusb = usb_get_intfdata(interface);
1127 
1128         dev_dbg(&atusb->usb_dev->dev, "%s\n", __func__);
1129 
1130         atusb->shutdown = 1;
1131         cancel_delayed_work_sync(&atusb->work);
1132 
1133         usb_kill_anchored_urbs(&atusb->rx_urbs);
1134         atusb_free_urbs(atusb);
1135         usb_kill_urb(atusb->tx_urb);
1136         usb_free_urb(atusb->tx_urb);
1137 
1138         ieee802154_unregister_hw(atusb->hw);
1139 
1140         usb_put_dev(atusb->usb_dev);
1141 
1142         ieee802154_free_hw(atusb->hw);
1143 
1144         usb_set_intfdata(interface, NULL);
1145 
1146         pr_debug("%s done\n", __func__);
1147 }
1148 
1149 /* The devices we work with */
1150 static const struct usb_device_id atusb_device_table[] = {
1151         {
1152                 .match_flags            = USB_DEVICE_ID_MATCH_DEVICE |
1153                                           USB_DEVICE_ID_MATCH_INT_INFO,
1154                 .idVendor               = ATUSB_VENDOR_ID,
1155                 .idProduct              = ATUSB_PRODUCT_ID,
1156                 .bInterfaceClass        = USB_CLASS_VENDOR_SPEC
1157         },
1158         /* end with null element */
1159         {}
1160 };
1161 MODULE_DEVICE_TABLE(usb, atusb_device_table);
1162 
1163 static struct usb_driver atusb_driver = {
1164         .name           = "atusb",
1165         .probe          = atusb_probe,
1166         .disconnect     = atusb_disconnect,
1167         .id_table       = atusb_device_table,
1168 };
1169 module_usb_driver(atusb_driver);
1170 
1171 MODULE_AUTHOR("Alexander Aring <alex.aring@gmail.com>");
1172 MODULE_AUTHOR("Richard Sharpe <realrichardsharpe@gmail.com>");
1173 MODULE_AUTHOR("Stefan Schmidt <stefan@datenfreihafen.org>");
1174 MODULE_AUTHOR("Werner Almesberger <werner@almesberger.net>");
1175 MODULE_AUTHOR("Josef Filzmaier <j.filzmaier@gmx.at>");
1176 MODULE_DESCRIPTION("ATUSB IEEE 802.15.4 Driver");
1177 MODULE_LICENSE("GPL");
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/ieee802154/atusb.c

DEFINITIONS
