Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 1 | /* |
| 2 | * atusb.c - Driver for the ATUSB IEEE 802.15.4 dongle |
| 3 | * |
| 4 | * Written 2013 by Werner Almesberger <werner@almesberger.net> |
| 5 | * |
Stefan Schmidt | 151c37b | 2016-04-19 16:28:55 +0200 | [diff] [blame] | 6 | * Copyright (c) 2015 - 2016 Stefan Schmidt <stefan@datenfreihafen.org> |
| 7 | * |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation, version 2 |
| 11 | * |
| 12 | * Based on at86rf230.c and spi_atusb.c. |
| 13 | * at86rf230.c is |
| 14 | * Copyright (C) 2009 Siemens AG |
| 15 | * Written by: Dmitry Eremin-Solenikov <dmitry.baryshkov@siemens.com> |
| 16 | * |
| 17 | * spi_atusb.c is |
| 18 | * Copyright (c) 2011 Richard Sharpe <realrichardsharpe@gmail.com> |
| 19 | * Copyright (c) 2011 Stefan Schmidt <stefan@datenfreihafen.org> |
| 20 | * Copyright (c) 2011 Werner Almesberger <werner@almesberger.net> |
| 21 | * |
| 22 | * USB initialization is |
| 23 | * Copyright (c) 2013 Alexander Aring <alex.aring@gmail.com> |
| 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 | int shutdown; /* non-zero if shutting down */ |
| 49 | int err; /* set by first error */ |
| 50 | |
| 51 | /* RX variables */ |
| 52 | struct delayed_work work; /* memory allocations */ |
| 53 | struct usb_anchor idle_urbs; /* URBs waiting to be submitted */ |
| 54 | struct usb_anchor rx_urbs; /* URBs waiting for reception */ |
| 55 | |
| 56 | /* TX variables */ |
| 57 | struct usb_ctrlrequest tx_dr; |
| 58 | struct urb *tx_urb; |
| 59 | struct sk_buff *tx_skb; |
| 60 | uint8_t tx_ack_seq; /* current TX ACK sequence number */ |
| 61 | }; |
| 62 | |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 63 | /* ----- USB commands without data ----------------------------------------- */ |
| 64 | |
| 65 | /* To reduce the number of error checks in the code, we record the first error |
| 66 | * in atusb->err and reject all subsequent requests until the error is cleared. |
| 67 | */ |
| 68 | |
| 69 | static int atusb_control_msg(struct atusb *atusb, unsigned int pipe, |
| 70 | __u8 request, __u8 requesttype, |
| 71 | __u16 value, __u16 index, |
| 72 | void *data, __u16 size, int timeout) |
| 73 | { |
| 74 | struct usb_device *usb_dev = atusb->usb_dev; |
| 75 | int ret; |
| 76 | |
| 77 | if (atusb->err) |
| 78 | return atusb->err; |
| 79 | |
| 80 | ret = usb_control_msg(usb_dev, pipe, request, requesttype, |
| 81 | value, index, data, size, timeout); |
| 82 | if (ret < 0) { |
| 83 | atusb->err = ret; |
| 84 | dev_err(&usb_dev->dev, |
| 85 | "atusb_control_msg: req 0x%02x val 0x%x idx 0x%x, error %d\n", |
| 86 | request, value, index, ret); |
| 87 | } |
| 88 | return ret; |
| 89 | } |
| 90 | |
| 91 | static int atusb_command(struct atusb *atusb, uint8_t cmd, uint8_t arg) |
| 92 | { |
| 93 | struct usb_device *usb_dev = atusb->usb_dev; |
| 94 | |
| 95 | dev_dbg(&usb_dev->dev, "atusb_command: cmd = 0x%x\n", cmd); |
| 96 | return atusb_control_msg(atusb, usb_sndctrlpipe(usb_dev, 0), |
| 97 | cmd, ATUSB_REQ_TO_DEV, arg, 0, NULL, 0, 1000); |
| 98 | } |
| 99 | |
| 100 | static int atusb_write_reg(struct atusb *atusb, uint8_t reg, uint8_t value) |
| 101 | { |
| 102 | struct usb_device *usb_dev = atusb->usb_dev; |
| 103 | |
| 104 | dev_dbg(&usb_dev->dev, "atusb_write_reg: 0x%02x <- 0x%02x\n", |
| 105 | reg, value); |
| 106 | return atusb_control_msg(atusb, usb_sndctrlpipe(usb_dev, 0), |
| 107 | ATUSB_REG_WRITE, ATUSB_REQ_TO_DEV, |
| 108 | value, reg, NULL, 0, 1000); |
| 109 | } |
| 110 | |
| 111 | static int atusb_read_reg(struct atusb *atusb, uint8_t reg) |
| 112 | { |
| 113 | struct usb_device *usb_dev = atusb->usb_dev; |
| 114 | int ret; |
Stefan Schmidt | 86249ae | 2016-12-15 18:40:14 +0100 | [diff] [blame] | 115 | uint8_t *buffer; |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 116 | uint8_t value; |
| 117 | |
Stefan Schmidt | 86249ae | 2016-12-15 18:40:14 +0100 | [diff] [blame] | 118 | buffer = kmalloc(1, GFP_KERNEL); |
| 119 | if (!buffer) |
| 120 | return -ENOMEM; |
| 121 | |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 122 | dev_dbg(&usb_dev->dev, "atusb: reg = 0x%x\n", reg); |
| 123 | ret = atusb_control_msg(atusb, usb_rcvctrlpipe(usb_dev, 0), |
| 124 | ATUSB_REG_READ, ATUSB_REQ_FROM_DEV, |
Stefan Schmidt | 86249ae | 2016-12-15 18:40:14 +0100 | [diff] [blame] | 125 | 0, reg, buffer, 1, 1000); |
| 126 | |
| 127 | if (ret >= 0) { |
| 128 | value = buffer[0]; |
| 129 | kfree(buffer); |
| 130 | return value; |
| 131 | } else { |
| 132 | kfree(buffer); |
| 133 | return ret; |
| 134 | } |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 135 | } |
| 136 | |
Stefan Schmidt | bdc7873 | 2015-05-29 10:51:25 +0200 | [diff] [blame] | 137 | static int atusb_write_subreg(struct atusb *atusb, uint8_t reg, uint8_t mask, |
| 138 | uint8_t shift, uint8_t value) |
| 139 | { |
| 140 | struct usb_device *usb_dev = atusb->usb_dev; |
| 141 | uint8_t orig, tmp; |
| 142 | int ret = 0; |
| 143 | |
| 144 | dev_dbg(&usb_dev->dev, "atusb_write_subreg: 0x%02x <- 0x%02x\n", |
| 145 | reg, value); |
| 146 | |
| 147 | orig = atusb_read_reg(atusb, reg); |
| 148 | |
| 149 | /* Write the value only into that part of the register which is allowed |
| 150 | * by the mask. All other bits stay as before. |
| 151 | */ |
| 152 | tmp = orig & ~mask; |
| 153 | tmp |= (value << shift) & mask; |
| 154 | |
| 155 | if (tmp != orig) |
| 156 | ret = atusb_write_reg(atusb, reg, tmp); |
| 157 | |
| 158 | return ret; |
| 159 | } |
| 160 | |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 161 | static int atusb_get_and_clear_error(struct atusb *atusb) |
| 162 | { |
| 163 | int err = atusb->err; |
| 164 | |
| 165 | atusb->err = 0; |
| 166 | return err; |
| 167 | } |
| 168 | |
| 169 | /* ----- skb allocation ---------------------------------------------------- */ |
| 170 | |
| 171 | #define MAX_PSDU 127 |
| 172 | #define MAX_RX_XFER (1 + MAX_PSDU + 2 + 1) /* PHR+PSDU+CRC+LQI */ |
| 173 | |
| 174 | #define SKB_ATUSB(skb) (*(struct atusb **)(skb)->cb) |
| 175 | |
| 176 | static void atusb_in(struct urb *urb); |
| 177 | |
| 178 | static int atusb_submit_rx_urb(struct atusb *atusb, struct urb *urb) |
| 179 | { |
| 180 | struct usb_device *usb_dev = atusb->usb_dev; |
| 181 | struct sk_buff *skb = urb->context; |
| 182 | int ret; |
| 183 | |
| 184 | if (!skb) { |
| 185 | skb = alloc_skb(MAX_RX_XFER, GFP_KERNEL); |
| 186 | if (!skb) { |
| 187 | dev_warn_ratelimited(&usb_dev->dev, |
| 188 | "atusb_in: can't allocate skb\n"); |
| 189 | return -ENOMEM; |
| 190 | } |
| 191 | skb_put(skb, MAX_RX_XFER); |
| 192 | SKB_ATUSB(skb) = atusb; |
| 193 | } |
| 194 | |
| 195 | usb_fill_bulk_urb(urb, usb_dev, usb_rcvbulkpipe(usb_dev, 1), |
| 196 | skb->data, MAX_RX_XFER, atusb_in, skb); |
| 197 | usb_anchor_urb(urb, &atusb->rx_urbs); |
| 198 | |
| 199 | ret = usb_submit_urb(urb, GFP_KERNEL); |
| 200 | if (ret) { |
| 201 | usb_unanchor_urb(urb); |
| 202 | kfree_skb(skb); |
| 203 | urb->context = NULL; |
| 204 | } |
| 205 | return ret; |
| 206 | } |
| 207 | |
| 208 | static void atusb_work_urbs(struct work_struct *work) |
| 209 | { |
| 210 | struct atusb *atusb = |
| 211 | container_of(to_delayed_work(work), struct atusb, work); |
| 212 | struct usb_device *usb_dev = atusb->usb_dev; |
| 213 | struct urb *urb; |
| 214 | int ret; |
| 215 | |
| 216 | if (atusb->shutdown) |
| 217 | return; |
| 218 | |
| 219 | do { |
| 220 | urb = usb_get_from_anchor(&atusb->idle_urbs); |
| 221 | if (!urb) |
| 222 | return; |
| 223 | ret = atusb_submit_rx_urb(atusb, urb); |
| 224 | } while (!ret); |
| 225 | |
| 226 | usb_anchor_urb(urb, &atusb->idle_urbs); |
| 227 | dev_warn_ratelimited(&usb_dev->dev, |
| 228 | "atusb_in: can't allocate/submit URB (%d)\n", ret); |
| 229 | schedule_delayed_work(&atusb->work, |
| 230 | msecs_to_jiffies(ATUSB_ALLOC_DELAY_MS) + 1); |
| 231 | } |
| 232 | |
| 233 | /* ----- Asynchronous USB -------------------------------------------------- */ |
| 234 | |
| 235 | static void atusb_tx_done(struct atusb *atusb, uint8_t seq) |
| 236 | { |
| 237 | struct usb_device *usb_dev = atusb->usb_dev; |
| 238 | uint8_t expect = atusb->tx_ack_seq; |
| 239 | |
| 240 | dev_dbg(&usb_dev->dev, "atusb_tx_done (0x%02x/0x%02x)\n", seq, expect); |
| 241 | if (seq == expect) { |
| 242 | /* TODO check for ifs handling in firmware */ |
| 243 | ieee802154_xmit_complete(atusb->hw, atusb->tx_skb, false); |
| 244 | } else { |
| 245 | /* TODO I experience this case when atusb has a tx complete |
| 246 | * irq before probing, we should fix the firmware it's an |
| 247 | * unlikely case now that seq == expect is then true, but can |
| 248 | * happen and fail with a tx_skb = NULL; |
| 249 | */ |
| 250 | ieee802154_wake_queue(atusb->hw); |
| 251 | if (atusb->tx_skb) |
| 252 | dev_kfree_skb_irq(atusb->tx_skb); |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | static void atusb_in_good(struct urb *urb) |
| 257 | { |
| 258 | struct usb_device *usb_dev = urb->dev; |
| 259 | struct sk_buff *skb = urb->context; |
| 260 | struct atusb *atusb = SKB_ATUSB(skb); |
| 261 | uint8_t len, lqi; |
| 262 | |
| 263 | if (!urb->actual_length) { |
| 264 | dev_dbg(&usb_dev->dev, "atusb_in: zero-sized URB ?\n"); |
| 265 | return; |
| 266 | } |
| 267 | |
| 268 | len = *skb->data; |
| 269 | |
| 270 | if (urb->actual_length == 1) { |
| 271 | atusb_tx_done(atusb, len); |
| 272 | return; |
| 273 | } |
| 274 | |
| 275 | if (len + 1 > urb->actual_length - 1) { |
| 276 | dev_dbg(&usb_dev->dev, "atusb_in: frame len %d+1 > URB %u-1\n", |
| 277 | len, urb->actual_length); |
| 278 | return; |
| 279 | } |
| 280 | |
| 281 | if (!ieee802154_is_valid_psdu_len(len)) { |
| 282 | dev_dbg(&usb_dev->dev, "atusb_in: frame corrupted\n"); |
| 283 | return; |
| 284 | } |
| 285 | |
| 286 | lqi = skb->data[len + 1]; |
| 287 | dev_dbg(&usb_dev->dev, "atusb_in: rx len %d lqi 0x%02x\n", len, lqi); |
| 288 | skb_pull(skb, 1); /* remove PHR */ |
| 289 | skb_trim(skb, len); /* get payload only */ |
| 290 | ieee802154_rx_irqsafe(atusb->hw, skb, lqi); |
| 291 | urb->context = NULL; /* skb is gone */ |
| 292 | } |
| 293 | |
| 294 | static void atusb_in(struct urb *urb) |
| 295 | { |
| 296 | struct usb_device *usb_dev = urb->dev; |
| 297 | struct sk_buff *skb = urb->context; |
| 298 | struct atusb *atusb = SKB_ATUSB(skb); |
| 299 | |
| 300 | dev_dbg(&usb_dev->dev, "atusb_in: status %d len %d\n", |
| 301 | urb->status, urb->actual_length); |
| 302 | if (urb->status) { |
| 303 | if (urb->status == -ENOENT) { /* being killed */ |
| 304 | kfree_skb(skb); |
| 305 | urb->context = NULL; |
| 306 | return; |
| 307 | } |
| 308 | dev_dbg(&usb_dev->dev, "atusb_in: URB error %d\n", urb->status); |
| 309 | } else { |
| 310 | atusb_in_good(urb); |
| 311 | } |
| 312 | |
| 313 | usb_anchor_urb(urb, &atusb->idle_urbs); |
| 314 | if (!atusb->shutdown) |
| 315 | schedule_delayed_work(&atusb->work, 0); |
| 316 | } |
| 317 | |
| 318 | /* ----- URB allocation/deallocation --------------------------------------- */ |
| 319 | |
| 320 | static void atusb_free_urbs(struct atusb *atusb) |
| 321 | { |
| 322 | struct urb *urb; |
| 323 | |
| 324 | while (1) { |
| 325 | urb = usb_get_from_anchor(&atusb->idle_urbs); |
| 326 | if (!urb) |
| 327 | break; |
Markus Elfring | 41881465 | 2015-12-10 23:44:34 +0100 | [diff] [blame] | 328 | kfree_skb(urb->context); |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 329 | usb_free_urb(urb); |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | static int atusb_alloc_urbs(struct atusb *atusb, int n) |
| 334 | { |
| 335 | struct urb *urb; |
| 336 | |
| 337 | while (n) { |
| 338 | urb = usb_alloc_urb(0, GFP_KERNEL); |
| 339 | if (!urb) { |
| 340 | atusb_free_urbs(atusb); |
| 341 | return -ENOMEM; |
| 342 | } |
| 343 | usb_anchor_urb(urb, &atusb->idle_urbs); |
| 344 | n--; |
| 345 | } |
| 346 | return 0; |
| 347 | } |
| 348 | |
| 349 | /* ----- IEEE 802.15.4 interface operations -------------------------------- */ |
| 350 | |
| 351 | static void atusb_xmit_complete(struct urb *urb) |
| 352 | { |
| 353 | dev_dbg(&urb->dev->dev, "atusb_xmit urb completed"); |
| 354 | } |
| 355 | |
| 356 | static int atusb_xmit(struct ieee802154_hw *hw, struct sk_buff *skb) |
| 357 | { |
| 358 | struct atusb *atusb = hw->priv; |
| 359 | struct usb_device *usb_dev = atusb->usb_dev; |
| 360 | int ret; |
| 361 | |
| 362 | dev_dbg(&usb_dev->dev, "atusb_xmit (%d)\n", skb->len); |
| 363 | atusb->tx_skb = skb; |
| 364 | atusb->tx_ack_seq++; |
| 365 | atusb->tx_dr.wIndex = cpu_to_le16(atusb->tx_ack_seq); |
| 366 | atusb->tx_dr.wLength = cpu_to_le16(skb->len); |
| 367 | |
| 368 | usb_fill_control_urb(atusb->tx_urb, usb_dev, |
| 369 | usb_sndctrlpipe(usb_dev, 0), |
| 370 | (unsigned char *)&atusb->tx_dr, skb->data, |
| 371 | skb->len, atusb_xmit_complete, NULL); |
| 372 | ret = usb_submit_urb(atusb->tx_urb, GFP_ATOMIC); |
| 373 | dev_dbg(&usb_dev->dev, "atusb_xmit done (%d)\n", ret); |
| 374 | return ret; |
| 375 | } |
| 376 | |
| 377 | static int atusb_channel(struct ieee802154_hw *hw, u8 page, u8 channel) |
| 378 | { |
| 379 | struct atusb *atusb = hw->priv; |
| 380 | int ret; |
| 381 | |
Alexander Aring | 3896129 | 2016-07-06 23:32:29 +0200 | [diff] [blame] | 382 | ret = atusb_write_subreg(atusb, SR_CHANNEL, channel); |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 383 | if (ret < 0) |
| 384 | return ret; |
| 385 | msleep(1); /* @@@ ugly synchronization */ |
| 386 | return 0; |
| 387 | } |
| 388 | |
| 389 | static int atusb_ed(struct ieee802154_hw *hw, u8 *level) |
| 390 | { |
Stefan Schmidt | 2d8cbd3 | 2015-05-21 16:51:37 +0200 | [diff] [blame] | 391 | BUG_ON(!level); |
| 392 | *level = 0xbe; |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 393 | return 0; |
| 394 | } |
| 395 | |
| 396 | static int atusb_set_hw_addr_filt(struct ieee802154_hw *hw, |
| 397 | struct ieee802154_hw_addr_filt *filt, |
| 398 | unsigned long changed) |
| 399 | { |
| 400 | struct atusb *atusb = hw->priv; |
| 401 | struct device *dev = &atusb->usb_dev->dev; |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 402 | |
| 403 | if (changed & IEEE802154_AFILT_SADDR_CHANGED) { |
| 404 | u16 addr = le16_to_cpu(filt->short_addr); |
| 405 | |
| 406 | dev_vdbg(dev, "atusb_set_hw_addr_filt called for saddr\n"); |
| 407 | atusb_write_reg(atusb, RG_SHORT_ADDR_0, addr); |
| 408 | atusb_write_reg(atusb, RG_SHORT_ADDR_1, addr >> 8); |
| 409 | } |
| 410 | |
| 411 | if (changed & IEEE802154_AFILT_PANID_CHANGED) { |
| 412 | u16 pan = le16_to_cpu(filt->pan_id); |
| 413 | |
| 414 | dev_vdbg(dev, "atusb_set_hw_addr_filt called for pan id\n"); |
| 415 | atusb_write_reg(atusb, RG_PAN_ID_0, pan); |
| 416 | atusb_write_reg(atusb, RG_PAN_ID_1, pan >> 8); |
| 417 | } |
| 418 | |
| 419 | if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) { |
| 420 | u8 i, addr[IEEE802154_EXTENDED_ADDR_LEN]; |
| 421 | |
| 422 | memcpy(addr, &filt->ieee_addr, IEEE802154_EXTENDED_ADDR_LEN); |
| 423 | dev_vdbg(dev, "atusb_set_hw_addr_filt called for IEEE addr\n"); |
| 424 | for (i = 0; i < 8; i++) |
| 425 | atusb_write_reg(atusb, RG_IEEE_ADDR_0 + i, addr[i]); |
| 426 | } |
| 427 | |
| 428 | if (changed & IEEE802154_AFILT_PANC_CHANGED) { |
| 429 | dev_vdbg(dev, |
| 430 | "atusb_set_hw_addr_filt called for panc change\n"); |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 431 | if (filt->pan_coord) |
Stefan Schmidt | bdc7873 | 2015-05-29 10:51:25 +0200 | [diff] [blame] | 432 | atusb_write_subreg(atusb, SR_AACK_I_AM_COORD, 1); |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 433 | else |
Stefan Schmidt | bdc7873 | 2015-05-29 10:51:25 +0200 | [diff] [blame] | 434 | atusb_write_subreg(atusb, SR_AACK_I_AM_COORD, 0); |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 435 | } |
| 436 | |
| 437 | return atusb_get_and_clear_error(atusb); |
| 438 | } |
| 439 | |
| 440 | static int atusb_start(struct ieee802154_hw *hw) |
| 441 | { |
| 442 | struct atusb *atusb = hw->priv; |
| 443 | struct usb_device *usb_dev = atusb->usb_dev; |
| 444 | int ret; |
| 445 | |
| 446 | dev_dbg(&usb_dev->dev, "atusb_start\n"); |
| 447 | schedule_delayed_work(&atusb->work, 0); |
| 448 | atusb_command(atusb, ATUSB_RX_MODE, 1); |
| 449 | ret = atusb_get_and_clear_error(atusb); |
| 450 | if (ret < 0) |
| 451 | usb_kill_anchored_urbs(&atusb->idle_urbs); |
| 452 | return ret; |
| 453 | } |
| 454 | |
| 455 | static void atusb_stop(struct ieee802154_hw *hw) |
| 456 | { |
| 457 | struct atusb *atusb = hw->priv; |
| 458 | struct usb_device *usb_dev = atusb->usb_dev; |
| 459 | |
| 460 | dev_dbg(&usb_dev->dev, "atusb_stop\n"); |
| 461 | usb_kill_anchored_urbs(&atusb->idle_urbs); |
| 462 | atusb_command(atusb, ATUSB_RX_MODE, 0); |
| 463 | atusb_get_and_clear_error(atusb); |
| 464 | } |
| 465 | |
Stefan Schmidt | 8702cb0 | 2015-05-29 10:51:26 +0200 | [diff] [blame] | 466 | #define ATUSB_MAX_TX_POWERS 0xF |
| 467 | static const s32 atusb_powers[ATUSB_MAX_TX_POWERS + 1] = { |
| 468 | 300, 280, 230, 180, 130, 70, 0, -100, -200, -300, -400, -500, -700, |
| 469 | -900, -1200, -1700, |
| 470 | }; |
| 471 | |
| 472 | static int |
| 473 | atusb_set_txpower(struct ieee802154_hw *hw, s32 mbm) |
| 474 | { |
| 475 | struct atusb *atusb = hw->priv; |
| 476 | u32 i; |
| 477 | |
| 478 | for (i = 0; i < hw->phy->supported.tx_powers_size; i++) { |
| 479 | if (hw->phy->supported.tx_powers[i] == mbm) |
| 480 | return atusb_write_subreg(atusb, SR_TX_PWR_23X, i); |
| 481 | } |
| 482 | |
| 483 | return -EINVAL; |
| 484 | } |
| 485 | |
Stefan Schmidt | 0f4715c | 2016-04-19 16:28:53 +0200 | [diff] [blame] | 486 | #define ATUSB_MAX_ED_LEVELS 0xF |
| 487 | static const s32 atusb_ed_levels[ATUSB_MAX_ED_LEVELS + 1] = { |
| 488 | -9100, -8900, -8700, -8500, -8300, -8100, -7900, -7700, -7500, -7300, |
| 489 | -7100, -6900, -6700, -6500, -6300, -6100, |
| 490 | }; |
| 491 | |
| 492 | static int |
Stefan Schmidt | 308dbb7 | 2016-04-19 16:28:54 +0200 | [diff] [blame] | 493 | atusb_set_cca_mode(struct ieee802154_hw *hw, const struct wpan_phy_cca *cca) |
| 494 | { |
| 495 | struct atusb *atusb = hw->priv; |
| 496 | u8 val; |
| 497 | |
| 498 | /* mapping 802.15.4 to driver spec */ |
| 499 | switch (cca->mode) { |
| 500 | case NL802154_CCA_ENERGY: |
| 501 | val = 1; |
| 502 | break; |
| 503 | case NL802154_CCA_CARRIER: |
| 504 | val = 2; |
| 505 | break; |
| 506 | case NL802154_CCA_ENERGY_CARRIER: |
| 507 | switch (cca->opt) { |
| 508 | case NL802154_CCA_OPT_ENERGY_CARRIER_AND: |
| 509 | val = 3; |
| 510 | break; |
| 511 | case NL802154_CCA_OPT_ENERGY_CARRIER_OR: |
| 512 | val = 0; |
| 513 | break; |
| 514 | default: |
| 515 | return -EINVAL; |
| 516 | } |
| 517 | break; |
| 518 | default: |
| 519 | return -EINVAL; |
| 520 | } |
| 521 | |
| 522 | return atusb_write_subreg(atusb, SR_CCA_MODE, val); |
| 523 | } |
| 524 | |
| 525 | static int |
Stefan Schmidt | 0f4715c | 2016-04-19 16:28:53 +0200 | [diff] [blame] | 526 | atusb_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm) |
| 527 | { |
| 528 | struct atusb *atusb = hw->priv; |
| 529 | u32 i; |
| 530 | |
| 531 | for (i = 0; i < hw->phy->supported.cca_ed_levels_size; i++) { |
| 532 | if (hw->phy->supported.cca_ed_levels[i] == mbm) |
| 533 | return atusb_write_subreg(atusb, SR_CCA_ED_THRES, i); |
| 534 | } |
| 535 | |
| 536 | return -EINVAL; |
| 537 | } |
| 538 | |
Stefan Schmidt | c61c9bd | 2015-05-29 10:51:27 +0200 | [diff] [blame] | 539 | static int |
Stefan Schmidt | fb7c579 | 2016-04-19 16:28:52 +0200 | [diff] [blame] | 540 | atusb_set_csma_params(struct ieee802154_hw *hw, u8 min_be, u8 max_be, u8 retries) |
| 541 | { |
| 542 | struct atusb *atusb = hw->priv; |
| 543 | int ret; |
| 544 | |
| 545 | ret = atusb_write_subreg(atusb, SR_MIN_BE, min_be); |
| 546 | if (ret) |
| 547 | return ret; |
| 548 | |
| 549 | ret = atusb_write_subreg(atusb, SR_MAX_BE, max_be); |
| 550 | if (ret) |
| 551 | return ret; |
| 552 | |
| 553 | return atusb_write_subreg(atusb, SR_MAX_CSMA_RETRIES, retries); |
| 554 | } |
| 555 | |
| 556 | static int |
Stefan Schmidt | c61c9bd | 2015-05-29 10:51:27 +0200 | [diff] [blame] | 557 | atusb_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on) |
| 558 | { |
| 559 | struct atusb *atusb = hw->priv; |
| 560 | int ret; |
| 561 | |
| 562 | if (on) { |
| 563 | ret = atusb_write_subreg(atusb, SR_AACK_DIS_ACK, 1); |
| 564 | if (ret < 0) |
| 565 | return ret; |
| 566 | |
| 567 | ret = atusb_write_subreg(atusb, SR_AACK_PROM_MODE, 1); |
| 568 | if (ret < 0) |
| 569 | return ret; |
| 570 | } else { |
| 571 | ret = atusb_write_subreg(atusb, SR_AACK_PROM_MODE, 0); |
| 572 | if (ret < 0) |
| 573 | return ret; |
| 574 | |
| 575 | ret = atusb_write_subreg(atusb, SR_AACK_DIS_ACK, 0); |
| 576 | if (ret < 0) |
| 577 | return ret; |
| 578 | } |
| 579 | |
| 580 | return 0; |
| 581 | } |
| 582 | |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 583 | static struct ieee802154_ops atusb_ops = { |
| 584 | .owner = THIS_MODULE, |
| 585 | .xmit_async = atusb_xmit, |
| 586 | .ed = atusb_ed, |
| 587 | .set_channel = atusb_channel, |
| 588 | .start = atusb_start, |
| 589 | .stop = atusb_stop, |
| 590 | .set_hw_addr_filt = atusb_set_hw_addr_filt, |
Stefan Schmidt | 8702cb0 | 2015-05-29 10:51:26 +0200 | [diff] [blame] | 591 | .set_txpower = atusb_set_txpower, |
Stefan Schmidt | 308dbb7 | 2016-04-19 16:28:54 +0200 | [diff] [blame] | 592 | .set_cca_mode = atusb_set_cca_mode, |
Stefan Schmidt | 0f4715c | 2016-04-19 16:28:53 +0200 | [diff] [blame] | 593 | .set_cca_ed_level = atusb_set_cca_ed_level, |
Stefan Schmidt | fb7c579 | 2016-04-19 16:28:52 +0200 | [diff] [blame] | 594 | .set_csma_params = atusb_set_csma_params, |
Stefan Schmidt | c61c9bd | 2015-05-29 10:51:27 +0200 | [diff] [blame] | 595 | .set_promiscuous_mode = atusb_set_promiscuous_mode, |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 596 | }; |
| 597 | |
| 598 | /* ----- Firmware and chip version information ----------------------------- */ |
| 599 | |
| 600 | static int atusb_get_and_show_revision(struct atusb *atusb) |
| 601 | { |
| 602 | struct usb_device *usb_dev = atusb->usb_dev; |
Stefan Schmidt | 86249ae | 2016-12-15 18:40:14 +0100 | [diff] [blame] | 603 | unsigned char *buffer; |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 604 | int ret; |
| 605 | |
Stefan Schmidt | 86249ae | 2016-12-15 18:40:14 +0100 | [diff] [blame] | 606 | buffer = kmalloc(3, GFP_KERNEL); |
| 607 | if (!buffer) |
| 608 | return -ENOMEM; |
| 609 | |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 610 | /* Get a couple of the ATMega Firmware values */ |
| 611 | ret = atusb_control_msg(atusb, usb_rcvctrlpipe(usb_dev, 0), |
| 612 | ATUSB_ID, ATUSB_REQ_FROM_DEV, 0, 0, |
| 613 | buffer, 3, 1000); |
| 614 | if (ret >= 0) |
| 615 | dev_info(&usb_dev->dev, |
| 616 | "Firmware: major: %u, minor: %u, hardware type: %u\n", |
| 617 | buffer[0], buffer[1], buffer[2]); |
Stefan Schmidt | 33a238a | 2015-05-21 16:51:35 +0200 | [diff] [blame] | 618 | if (buffer[0] == 0 && buffer[1] < 2) { |
| 619 | dev_info(&usb_dev->dev, |
| 620 | "Firmware version (%u.%u) is predates our first public release.", |
| 621 | buffer[0], buffer[1]); |
| 622 | dev_info(&usb_dev->dev, "Please update to version 0.2 or newer"); |
| 623 | } |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 624 | |
Stefan Schmidt | 86249ae | 2016-12-15 18:40:14 +0100 | [diff] [blame] | 625 | kfree(buffer); |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 626 | return ret; |
| 627 | } |
| 628 | |
| 629 | static int atusb_get_and_show_build(struct atusb *atusb) |
| 630 | { |
| 631 | struct usb_device *usb_dev = atusb->usb_dev; |
Stefan Schmidt | 86249ae | 2016-12-15 18:40:14 +0100 | [diff] [blame] | 632 | char *build; |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 633 | int ret; |
| 634 | |
Stefan Schmidt | 86249ae | 2016-12-15 18:40:14 +0100 | [diff] [blame] | 635 | build = kmalloc(ATUSB_BUILD_SIZE + 1, GFP_KERNEL); |
| 636 | if (!build) |
| 637 | return -ENOMEM; |
| 638 | |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 639 | ret = atusb_control_msg(atusb, usb_rcvctrlpipe(usb_dev, 0), |
| 640 | ATUSB_BUILD, ATUSB_REQ_FROM_DEV, 0, 0, |
| 641 | build, ATUSB_BUILD_SIZE, 1000); |
| 642 | if (ret >= 0) { |
| 643 | build[ret] = 0; |
| 644 | dev_info(&usb_dev->dev, "Firmware: build %s\n", build); |
| 645 | } |
| 646 | |
Stefan Schmidt | 86249ae | 2016-12-15 18:40:14 +0100 | [diff] [blame] | 647 | kfree(build); |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 648 | return ret; |
| 649 | } |
| 650 | |
| 651 | static int atusb_get_and_show_chip(struct atusb *atusb) |
| 652 | { |
| 653 | struct usb_device *usb_dev = atusb->usb_dev; |
| 654 | uint8_t man_id_0, man_id_1, part_num, version_num; |
Alexander Aring | 9def9af | 2015-09-05 12:27:59 +0200 | [diff] [blame] | 655 | const char *chip; |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 656 | |
| 657 | man_id_0 = atusb_read_reg(atusb, RG_MAN_ID_0); |
| 658 | man_id_1 = atusb_read_reg(atusb, RG_MAN_ID_1); |
| 659 | part_num = atusb_read_reg(atusb, RG_PART_NUM); |
| 660 | version_num = atusb_read_reg(atusb, RG_VERSION_NUM); |
| 661 | |
| 662 | if (atusb->err) |
| 663 | return atusb->err; |
| 664 | |
| 665 | if ((man_id_1 << 8 | man_id_0) != ATUSB_JEDEC_ATMEL) { |
| 666 | dev_err(&usb_dev->dev, |
| 667 | "non-Atmel transceiver xxxx%02x%02x\n", |
| 668 | man_id_1, man_id_0); |
| 669 | goto fail; |
| 670 | } |
Alexander Aring | 9def9af | 2015-09-05 12:27:59 +0200 | [diff] [blame] | 671 | |
| 672 | switch (part_num) { |
| 673 | case 2: |
| 674 | chip = "AT86RF230"; |
| 675 | break; |
| 676 | case 3: |
| 677 | chip = "AT86RF231"; |
| 678 | break; |
| 679 | default: |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 680 | dev_err(&usb_dev->dev, |
| 681 | "unexpected transceiver, part 0x%02x version 0x%02x\n", |
| 682 | part_num, version_num); |
| 683 | goto fail; |
| 684 | } |
| 685 | |
Alexander Aring | 9def9af | 2015-09-05 12:27:59 +0200 | [diff] [blame] | 686 | dev_info(&usb_dev->dev, "ATUSB: %s version %d\n", chip, version_num); |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 687 | |
| 688 | return 0; |
| 689 | |
| 690 | fail: |
| 691 | atusb->err = -ENODEV; |
| 692 | return -ENODEV; |
| 693 | } |
| 694 | |
| 695 | /* ----- Setup ------------------------------------------------------------- */ |
| 696 | |
| 697 | static int atusb_probe(struct usb_interface *interface, |
| 698 | const struct usb_device_id *id) |
| 699 | { |
| 700 | struct usb_device *usb_dev = interface_to_usbdev(interface); |
| 701 | struct ieee802154_hw *hw; |
| 702 | struct atusb *atusb = NULL; |
| 703 | int ret = -ENOMEM; |
| 704 | |
| 705 | hw = ieee802154_alloc_hw(sizeof(struct atusb), &atusb_ops); |
| 706 | if (!hw) |
| 707 | return -ENOMEM; |
| 708 | |
| 709 | atusb = hw->priv; |
| 710 | atusb->hw = hw; |
| 711 | atusb->usb_dev = usb_get_dev(usb_dev); |
| 712 | usb_set_intfdata(interface, atusb); |
| 713 | |
| 714 | atusb->shutdown = 0; |
| 715 | atusb->err = 0; |
| 716 | INIT_DELAYED_WORK(&atusb->work, atusb_work_urbs); |
| 717 | init_usb_anchor(&atusb->idle_urbs); |
| 718 | init_usb_anchor(&atusb->rx_urbs); |
| 719 | |
| 720 | if (atusb_alloc_urbs(atusb, ATUSB_NUM_RX_URBS)) |
| 721 | goto fail; |
| 722 | |
| 723 | atusb->tx_dr.bRequestType = ATUSB_REQ_TO_DEV; |
| 724 | atusb->tx_dr.bRequest = ATUSB_TX; |
| 725 | atusb->tx_dr.wValue = cpu_to_le16(0); |
| 726 | |
| 727 | atusb->tx_urb = usb_alloc_urb(0, GFP_ATOMIC); |
| 728 | if (!atusb->tx_urb) |
| 729 | goto fail; |
| 730 | |
| 731 | hw->parent = &usb_dev->dev; |
Stefan Schmidt | f1a71886 | 2015-05-21 16:51:36 +0200 | [diff] [blame] | 732 | hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | IEEE802154_HW_AFILT | |
Stefan Schmidt | fb7c579 | 2016-04-19 16:28:52 +0200 | [diff] [blame] | 733 | IEEE802154_HW_PROMISCUOUS | IEEE802154_HW_CSMA_PARAMS; |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 734 | |
Stefan Schmidt | 308dbb7 | 2016-04-19 16:28:54 +0200 | [diff] [blame] | 735 | hw->phy->flags = WPAN_PHY_FLAG_TXPOWER | WPAN_PHY_FLAG_CCA_ED_LEVEL | |
| 736 | WPAN_PHY_FLAG_CCA_MODE; |
| 737 | |
| 738 | hw->phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) | |
| 739 | BIT(NL802154_CCA_CARRIER) | BIT(NL802154_CCA_ENERGY_CARRIER); |
| 740 | hw->phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND) | |
| 741 | BIT(NL802154_CCA_OPT_ENERGY_CARRIER_OR); |
Stefan Schmidt | 0f4715c | 2016-04-19 16:28:53 +0200 | [diff] [blame] | 742 | |
| 743 | hw->phy->supported.cca_ed_levels = atusb_ed_levels; |
| 744 | hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(atusb_ed_levels); |
Stefan Schmidt | 8702cb0 | 2015-05-29 10:51:26 +0200 | [diff] [blame] | 745 | |
Stefan Schmidt | 308dbb7 | 2016-04-19 16:28:54 +0200 | [diff] [blame] | 746 | hw->phy->cca.mode = NL802154_CCA_ENERGY; |
| 747 | |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 748 | hw->phy->current_page = 0; |
| 749 | hw->phy->current_channel = 11; /* reset default */ |
| 750 | hw->phy->supported.channels[0] = 0x7FFF800; |
Stefan Schmidt | 8702cb0 | 2015-05-29 10:51:26 +0200 | [diff] [blame] | 751 | hw->phy->supported.tx_powers = atusb_powers; |
| 752 | hw->phy->supported.tx_powers_size = ARRAY_SIZE(atusb_powers); |
| 753 | hw->phy->transmit_power = hw->phy->supported.tx_powers[0]; |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 754 | ieee802154_random_extended_addr(&hw->phy->perm_extended_addr); |
Stefan Schmidt | 0f4715c | 2016-04-19 16:28:53 +0200 | [diff] [blame] | 755 | hw->phy->cca_ed_level = hw->phy->supported.cca_ed_levels[7]; |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 756 | |
| 757 | atusb_command(atusb, ATUSB_RF_RESET, 0); |
| 758 | atusb_get_and_show_chip(atusb); |
| 759 | atusb_get_and_show_revision(atusb); |
| 760 | atusb_get_and_show_build(atusb); |
| 761 | ret = atusb_get_and_clear_error(atusb); |
| 762 | if (ret) { |
| 763 | dev_err(&atusb->usb_dev->dev, |
| 764 | "%s: initialization failed, error = %d\n", |
| 765 | __func__, ret); |
| 766 | goto fail; |
| 767 | } |
| 768 | |
| 769 | ret = ieee802154_register_hw(hw); |
| 770 | if (ret) |
| 771 | goto fail; |
| 772 | |
| 773 | /* If we just powered on, we're now in P_ON and need to enter TRX_OFF |
| 774 | * explicitly. Any resets after that will send us straight to TRX_OFF, |
| 775 | * making the command below redundant. |
| 776 | */ |
| 777 | atusb_write_reg(atusb, RG_TRX_STATE, STATE_FORCE_TRX_OFF); |
| 778 | msleep(1); /* reset => TRX_OFF, tTR13 = 37 us */ |
| 779 | |
| 780 | #if 0 |
| 781 | /* Calculating the maximum time available to empty the frame buffer |
| 782 | * on reception: |
| 783 | * |
| 784 | * According to [1], the inter-frame gap is |
| 785 | * R * 20 * 16 us + 128 us |
| 786 | * where R is a random number from 0 to 7. Furthermore, we have 20 bit |
| 787 | * times (80 us at 250 kbps) of SHR of the next frame before the |
| 788 | * transceiver begins storing data in the frame buffer. |
| 789 | * |
| 790 | * This yields a minimum time of 208 us between the last data of a |
| 791 | * frame and the first data of the next frame. This time is further |
| 792 | * reduced by interrupt latency in the atusb firmware. |
| 793 | * |
| 794 | * atusb currently needs about 500 us to retrieve a maximum-sized |
| 795 | * frame. We therefore have to allow reception of a new frame to begin |
| 796 | * while we retrieve the previous frame. |
| 797 | * |
| 798 | * [1] "JN-AN-1035 Calculating data rates in an IEEE 802.15.4-based |
| 799 | * network", Jennic 2006. |
| 800 | * http://www.jennic.com/download_file.php?supportFile=JN-AN-1035%20Calculating%20802-15-4%20Data%20Rates-1v0.pdf |
| 801 | */ |
| 802 | |
Stefan Schmidt | bdc7873 | 2015-05-29 10:51:25 +0200 | [diff] [blame] | 803 | atusb_write_subreg(atusb, SR_RX_SAFE_MODE, 1); |
Alexander Aring | 7490b00 | 2015-05-17 21:44:57 +0200 | [diff] [blame] | 804 | #endif |
| 805 | atusb_write_reg(atusb, RG_IRQ_MASK, 0xff); |
| 806 | |
| 807 | ret = atusb_get_and_clear_error(atusb); |
| 808 | if (!ret) |
| 809 | return 0; |
| 810 | |
| 811 | dev_err(&atusb->usb_dev->dev, |
| 812 | "%s: setup failed, error = %d\n", |
| 813 | __func__, ret); |
| 814 | |
| 815 | ieee802154_unregister_hw(hw); |
| 816 | fail: |
| 817 | atusb_free_urbs(atusb); |
| 818 | usb_kill_urb(atusb->tx_urb); |
| 819 | usb_free_urb(atusb->tx_urb); |
| 820 | usb_put_dev(usb_dev); |
| 821 | ieee802154_free_hw(hw); |
| 822 | return ret; |
| 823 | } |
| 824 | |
| 825 | static void atusb_disconnect(struct usb_interface *interface) |
| 826 | { |
| 827 | struct atusb *atusb = usb_get_intfdata(interface); |
| 828 | |
| 829 | dev_dbg(&atusb->usb_dev->dev, "atusb_disconnect\n"); |
| 830 | |
| 831 | atusb->shutdown = 1; |
| 832 | cancel_delayed_work_sync(&atusb->work); |
| 833 | |
| 834 | usb_kill_anchored_urbs(&atusb->rx_urbs); |
| 835 | atusb_free_urbs(atusb); |
| 836 | usb_kill_urb(atusb->tx_urb); |
| 837 | usb_free_urb(atusb->tx_urb); |
| 838 | |
| 839 | ieee802154_unregister_hw(atusb->hw); |
| 840 | |
| 841 | ieee802154_free_hw(atusb->hw); |
| 842 | |
| 843 | usb_set_intfdata(interface, NULL); |
| 844 | usb_put_dev(atusb->usb_dev); |
| 845 | |
| 846 | pr_debug("atusb_disconnect done\n"); |
| 847 | } |
| 848 | |
| 849 | /* The devices we work with */ |
| 850 | static const struct usb_device_id atusb_device_table[] = { |
| 851 | { |
| 852 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
| 853 | USB_DEVICE_ID_MATCH_INT_INFO, |
| 854 | .idVendor = ATUSB_VENDOR_ID, |
| 855 | .idProduct = ATUSB_PRODUCT_ID, |
| 856 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC |
| 857 | }, |
| 858 | /* end with null element */ |
| 859 | {} |
| 860 | }; |
| 861 | MODULE_DEVICE_TABLE(usb, atusb_device_table); |
| 862 | |
| 863 | static struct usb_driver atusb_driver = { |
| 864 | .name = "atusb", |
| 865 | .probe = atusb_probe, |
| 866 | .disconnect = atusb_disconnect, |
| 867 | .id_table = atusb_device_table, |
| 868 | }; |
| 869 | module_usb_driver(atusb_driver); |
| 870 | |
| 871 | MODULE_AUTHOR("Alexander Aring <alex.aring@gmail.com>"); |
| 872 | MODULE_AUTHOR("Richard Sharpe <realrichardsharpe@gmail.com>"); |
| 873 | MODULE_AUTHOR("Stefan Schmidt <stefan@datenfreihafen.org>"); |
| 874 | MODULE_AUTHOR("Werner Almesberger <werner@almesberger.net>"); |
| 875 | MODULE_DESCRIPTION("ATUSB IEEE 802.15.4 Driver"); |
| 876 | MODULE_LICENSE("GPL"); |