2 * Intel Wireless WiMAX Connection 2400m
3 * Linux driver model glue for USB device, reset & fw upload
6 * Copyright (C) 2007-2008 Intel Corporation <linux-wimax@intel.com>
7 * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
8 * Yanir Lubetkin <yanirx.lubetkin@intel.com>
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License version
12 * 2 as published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
25 * See i2400m-usb.h for a general description of this driver.
27 * This file implements driver model glue, and hook ups for the
28 * generic driver to implement the bus-specific functions (device
29 * communication setup/tear down, firmware upload and resetting).
35 * i2400mu_netdev_setup()
37 * i2400m_netdev_setup()
45 * i2400m_cmd_enter_powersave()
46 * i2400mu_notification_release()
49 * i2400mu_notification_setup()
51 * i2400mu_bus_dev_start() Called by i2400m_dev_start() [who is
52 * i2400mu_tx_setup() called by i2400m_setup()]
54 * i2400mu_notification_setup()
56 * i2400mu_bus_dev_stop() Called by i2400m_dev_stop() [who is
57 * i2400mu_notification_release() called by i2400m_release()]
58 * i2400mu_rx_release()
59 * i2400mu_tx_release()
61 * i2400mu_bus_reset() Called by i2400m_reset
63 * __i2400mu_send_barker()
66 #include "i2400m-usb.h"
67 #include <linux/wimax/i2400m.h>
68 #include <linux/debugfs.h>
71 #define D_SUBMODULE usb
72 #include "usb-debug-levels.h"
74 static char i2400mu_debug_params
[128];
75 module_param_string(debug
, i2400mu_debug_params
, sizeof(i2400mu_debug_params
),
77 MODULE_PARM_DESC(debug
,
78 "String of space-separated NAME:VALUE pairs, where NAMEs "
79 "are the different debug submodules and VALUE are the "
80 "initial debug value to set.");
82 /* Our firmware file name */
83 static const char *i2400mu_bus_fw_names_5x50
[] = {
84 #define I2400MU_FW_FILE_NAME_v1_4 "i2400m-fw-usb-1.4.sbcf"
85 I2400MU_FW_FILE_NAME_v1_4
,
90 static const char *i2400mu_bus_fw_names_6050
[] = {
91 #define I6050U_FW_FILE_NAME_v1_5 "i6050-fw-usb-1.5.sbcf"
92 I6050U_FW_FILE_NAME_v1_5
,
98 int i2400mu_bus_dev_start(struct i2400m
*i2400m
)
101 struct i2400mu
*i2400mu
= container_of(i2400m
, struct i2400mu
, i2400m
);
102 struct device
*dev
= &i2400mu
->usb_iface
->dev
;
104 d_fnstart(3, dev
, "(i2400m %p)\n", i2400m
);
105 result
= i2400mu_tx_setup(i2400mu
);
107 goto error_usb_tx_setup
;
108 result
= i2400mu_rx_setup(i2400mu
);
110 goto error_usb_rx_setup
;
111 result
= i2400mu_notification_setup(i2400mu
);
113 goto error_notif_setup
;
114 d_fnend(3, dev
, "(i2400m %p) = %d\n", i2400m
, result
);
118 i2400mu_rx_release(i2400mu
);
120 i2400mu_tx_release(i2400mu
);
122 d_fnend(3, dev
, "(i2400m %p) = void\n", i2400m
);
128 void i2400mu_bus_dev_stop(struct i2400m
*i2400m
)
130 struct i2400mu
*i2400mu
= container_of(i2400m
, struct i2400mu
, i2400m
);
131 struct device
*dev
= &i2400mu
->usb_iface
->dev
;
133 d_fnstart(3, dev
, "(i2400m %p)\n", i2400m
);
134 i2400mu_notification_release(i2400mu
);
135 i2400mu_rx_release(i2400mu
);
136 i2400mu_tx_release(i2400mu
);
137 d_fnend(3, dev
, "(i2400m %p) = void\n", i2400m
);
142 * Sends a barker buffer to the device
144 * This helper will allocate a kmalloced buffer and use it to transmit
145 * (then free it). Reason for this is that other arches cannot use
146 * stack/vmalloc/text areas for DMA transfers.
148 * Error recovery here is simpler: anything is considered a hard error
149 * and will move the reset code to use a last-resort bus-based reset.
152 int __i2400mu_send_barker(struct i2400mu
*i2400mu
,
153 const __le32
*barker
,
157 struct usb_endpoint_descriptor
*epd
= NULL
;
158 int pipe
, actual_len
, ret
;
159 struct device
*dev
= &i2400mu
->usb_iface
->dev
;
163 ret
= usb_autopm_get_interface(i2400mu
->usb_iface
);
165 dev_err(dev
, "RESET: can't get autopm: %d\n", ret
);
169 buffer
= kmalloc(barker_size
, GFP_KERNEL
);
172 epd
= usb_get_epd(i2400mu
->usb_iface
, endpoint
);
173 pipe
= usb_sndbulkpipe(i2400mu
->usb_dev
, epd
->bEndpointAddress
);
174 memcpy(buffer
, barker
, barker_size
);
176 ret
= usb_bulk_msg(i2400mu
->usb_dev
, pipe
, buffer
, barker_size
,
180 if (actual_len
!= barker_size
) { /* Too short? drop it */
181 dev_err(dev
, "E: %s: short write (%d B vs %zu "
183 __func__
, actual_len
, barker_size
);
189 * Stall -- maybe the device is choking with our
190 * requests. Clear it and give it some time. If they
191 * happen to often, it might be another symptom, so we
194 * No error handling for usb_clear_halt(0; if it
195 * works, the retry works; if it fails, this switch
196 * does the error handling for us.
198 if (edc_inc(&i2400mu
->urb_edc
,
199 10 * EDC_MAX_ERRORS
, EDC_ERROR_TIMEFRAME
)) {
200 dev_err(dev
, "E: %s: too many stalls in "
201 "URB; resetting device\n", __func__
);
202 usb_queue_reset_device(i2400mu
->usb_iface
);
205 usb_clear_halt(i2400mu
->usb_dev
, pipe
);
206 msleep(10); /* give the device some time */
209 case -EINVAL
: /* while removing driver */
210 case -ENODEV
: /* dev disconnect ... */
211 case -ENOENT
: /* just ignore it */
212 case -ESHUTDOWN
: /* and exit */
216 default: /* Some error? */
217 if (edc_inc(&i2400mu
->urb_edc
,
218 EDC_MAX_ERRORS
, EDC_ERROR_TIMEFRAME
)) {
219 dev_err(dev
, "E: %s: maximum errors in URB "
220 "exceeded; resetting device\n",
222 usb_queue_reset_device(i2400mu
->usb_iface
);
224 dev_warn(dev
, "W: %s: cannot send URB: %d\n",
232 usb_autopm_put_interface(i2400mu
->usb_iface
);
238 * Reset a device at different levels (warm, cold or bus)
240 * @i2400m: device descriptor
241 * @reset_type: soft, warm or bus reset (I2400M_RT_WARM/SOFT/BUS)
243 * Warm and cold resets get a USB reset if they fail.
247 * The device will be fully reset internally, but won't be
248 * disconnected from the USB bus (so no reenumeration will
249 * happen). Firmware upload will be neccessary.
251 * The device will send a reboot barker in the notification endpoint
252 * that will trigger the driver to reinitialize the state
253 * automatically from notif.c:i2400m_notification_grok() into
254 * i2400m_dev_bootstrap_delayed().
256 * Cold and bus (USB) reset:
258 * The device will be fully reset internally, disconnected from the
259 * USB bus an a reenumeration will happen. Firmware upload will be
260 * neccessary. Thus, we don't do any locking or struct
261 * reinitialization, as we are going to be fully disconnected and
264 * Note we need to return -ENODEV if a warm reset was requested and we
265 * had to resort to a bus reset. See i2400m_op_reset(), wimax_reset()
266 * and wimax_dev->op_reset.
268 * WARNING: no driver state saved/fixed
271 int i2400mu_bus_reset(struct i2400m
*i2400m
, enum i2400m_reset_type rt
)
274 struct i2400mu
*i2400mu
=
275 container_of(i2400m
, struct i2400mu
, i2400m
);
276 struct device
*dev
= i2400m_dev(i2400m
);
277 static const __le32 i2400m_WARM_BOOT_BARKER
[4] = {
278 cpu_to_le32(I2400M_WARM_RESET_BARKER
),
279 cpu_to_le32(I2400M_WARM_RESET_BARKER
),
280 cpu_to_le32(I2400M_WARM_RESET_BARKER
),
281 cpu_to_le32(I2400M_WARM_RESET_BARKER
),
283 static const __le32 i2400m_COLD_BOOT_BARKER
[4] = {
284 cpu_to_le32(I2400M_COLD_RESET_BARKER
),
285 cpu_to_le32(I2400M_COLD_RESET_BARKER
),
286 cpu_to_le32(I2400M_COLD_RESET_BARKER
),
287 cpu_to_le32(I2400M_COLD_RESET_BARKER
),
290 d_fnstart(3, dev
, "(i2400m %p rt %u)\n", i2400m
, rt
);
291 if (rt
== I2400M_RT_WARM
)
292 result
= __i2400mu_send_barker(
293 i2400mu
, i2400m_WARM_BOOT_BARKER
,
294 sizeof(i2400m_WARM_BOOT_BARKER
),
295 i2400mu
->endpoint_cfg
.bulk_out
);
296 else if (rt
== I2400M_RT_COLD
)
297 result
= __i2400mu_send_barker(
298 i2400mu
, i2400m_COLD_BOOT_BARKER
,
299 sizeof(i2400m_COLD_BOOT_BARKER
),
300 i2400mu
->endpoint_cfg
.reset_cold
);
301 else if (rt
== I2400M_RT_BUS
) {
302 result
= usb_reset_device(i2400mu
->usb_dev
);
305 case -EINVAL
: /* device is gone */
310 break; /* We assume the device is disconnected */
312 dev_err(dev
, "USB reset failed (%d), giving up!\n",
316 result
= -EINVAL
; /* shut gcc up in certain arches */
320 && result
!= -EINVAL
/* device is gone */
321 && rt
!= I2400M_RT_BUS
) {
323 * Things failed -- resort to lower level reset, that
324 * we queue in another context; the reason for this is
325 * that the pre and post reset functionality requires
326 * the i2400m->init_mutex; RT_WARM and RT_COLD can
327 * come from areas where i2400m->init_mutex is taken.
329 dev_err(dev
, "%s reset failed (%d); trying USB reset\n",
330 rt
== I2400M_RT_WARM
? "warm" : "cold", result
);
331 usb_queue_reset_device(i2400mu
->usb_iface
);
334 d_fnend(3, dev
, "(i2400m %p rt %u) = %d\n", i2400m
, rt
, result
);
340 void i2400mu_netdev_setup(struct net_device
*net_dev
)
342 struct i2400m
*i2400m
= net_dev_to_i2400m(net_dev
);
343 struct i2400mu
*i2400mu
= container_of(i2400m
, struct i2400mu
, i2400m
);
344 i2400mu_init(i2400mu
);
345 i2400m_netdev_setup(net_dev
);
350 * Debug levels control; see debug.h
352 struct d_level D_LEVEL
[] = {
353 D_SUBMODULE_DEFINE(usb
),
354 D_SUBMODULE_DEFINE(fw
),
355 D_SUBMODULE_DEFINE(notif
),
356 D_SUBMODULE_DEFINE(rx
),
357 D_SUBMODULE_DEFINE(tx
),
359 size_t D_LEVEL_SIZE
= ARRAY_SIZE(D_LEVEL
);
362 #define __debugfs_register(prefix, name, parent) \
364 result = d_level_register_debugfs(prefix, name, parent); \
371 int i2400mu_debugfs_add(struct i2400mu
*i2400mu
)
374 struct device
*dev
= &i2400mu
->usb_iface
->dev
;
375 struct dentry
*dentry
= i2400mu
->i2400m
.wimax_dev
.debugfs_dentry
;
378 dentry
= debugfs_create_dir("i2400m-usb", dentry
);
379 result
= PTR_ERR(dentry
);
380 if (IS_ERR(dentry
)) {
381 if (result
== -ENODEV
)
382 result
= 0; /* No debugfs support */
385 i2400mu
->debugfs_dentry
= dentry
;
386 __debugfs_register("dl_", usb
, dentry
);
387 __debugfs_register("dl_", fw
, dentry
);
388 __debugfs_register("dl_", notif
, dentry
);
389 __debugfs_register("dl_", rx
, dentry
);
390 __debugfs_register("dl_", tx
, dentry
);
392 /* Don't touch these if you don't know what you are doing */
393 fd
= debugfs_create_u8("rx_size_auto_shrink", 0600, dentry
,
394 &i2400mu
->rx_size_auto_shrink
);
395 result
= PTR_ERR(fd
);
396 if (IS_ERR(fd
) && result
!= -ENODEV
) {
397 dev_err(dev
, "Can't create debugfs entry "
398 "rx_size_auto_shrink: %d\n", result
);
402 fd
= debugfs_create_size_t("rx_size", 0600, dentry
,
404 result
= PTR_ERR(fd
);
405 if (IS_ERR(fd
) && result
!= -ENODEV
) {
406 dev_err(dev
, "Can't create debugfs entry "
407 "rx_size: %d\n", result
);
414 debugfs_remove_recursive(i2400mu
->debugfs_dentry
);
419 static struct device_type i2400mu_type
= {
424 * Probe a i2400m interface and register it
426 * @iface: USB interface to link to
427 * @id: USB class/subclass/protocol id
428 * @returns: 0 if ok, < 0 errno code on error.
430 * Alloc a net device, initialize the bus-specific details and then
431 * calls the bus-generic initialization routine. That will register
432 * the wimax and netdev devices, upload the firmware [using
433 * _bus_bm_*()], call _bus_dev_start() to finalize the setup of the
434 * communication with the device and then will start to talk to it to
435 * finnish setting it up.
438 int i2400mu_probe(struct usb_interface
*iface
,
439 const struct usb_device_id
*id
)
442 struct net_device
*net_dev
;
443 struct device
*dev
= &iface
->dev
;
444 struct i2400m
*i2400m
;
445 struct i2400mu
*i2400mu
;
446 struct usb_device
*usb_dev
= interface_to_usbdev(iface
);
448 if (usb_dev
->speed
!= USB_SPEED_HIGH
)
449 dev_err(dev
, "device not connected as high speed\n");
451 /* Allocate instance [calls i2400m_netdev_setup() on it]. */
453 net_dev
= alloc_netdev(sizeof(*i2400mu
), "wmx%d",
454 i2400mu_netdev_setup
);
455 if (net_dev
== NULL
) {
456 dev_err(dev
, "no memory for network device instance\n");
457 goto error_alloc_netdev
;
459 SET_NETDEV_DEV(net_dev
, dev
);
460 SET_NETDEV_DEVTYPE(net_dev
, &i2400mu_type
);
461 i2400m
= net_dev_to_i2400m(net_dev
);
462 i2400mu
= container_of(i2400m
, struct i2400mu
, i2400m
);
463 i2400m
->wimax_dev
.net_dev
= net_dev
;
464 i2400mu
->usb_dev
= usb_get_dev(usb_dev
);
465 i2400mu
->usb_iface
= iface
;
466 usb_set_intfdata(iface
, i2400mu
);
468 i2400m
->bus_tx_block_size
= I2400MU_BLK_SIZE
;
469 i2400m
->bus_pl_size_max
= I2400MU_PL_SIZE_MAX
;
470 i2400m
->bus_setup
= NULL
;
471 i2400m
->bus_dev_start
= i2400mu_bus_dev_start
;
472 i2400m
->bus_dev_stop
= i2400mu_bus_dev_stop
;
473 i2400m
->bus_release
= NULL
;
474 i2400m
->bus_tx_kick
= i2400mu_bus_tx_kick
;
475 i2400m
->bus_reset
= i2400mu_bus_reset
;
476 i2400m
->bus_bm_retries
= I2400M_USB_BOOT_RETRIES
;
477 i2400m
->bus_bm_cmd_send
= i2400mu_bus_bm_cmd_send
;
478 i2400m
->bus_bm_wait_for_ack
= i2400mu_bus_bm_wait_for_ack
;
479 i2400m
->bus_bm_mac_addr_impaired
= 0;
481 if (id
->idProduct
== USB_DEVICE_ID_I6050
) {
482 i2400m
->bus_fw_names
= i2400mu_bus_fw_names_6050
;
483 i2400mu
->endpoint_cfg
.bulk_out
= 0;
484 i2400mu
->endpoint_cfg
.notification
= 3;
485 i2400mu
->endpoint_cfg
.reset_cold
= 2;
486 i2400mu
->endpoint_cfg
.bulk_in
= 1;
488 i2400m
->bus_fw_names
= i2400mu_bus_fw_names_5x50
;
489 i2400mu
->endpoint_cfg
.bulk_out
= 0;
490 i2400mu
->endpoint_cfg
.notification
= 1;
491 i2400mu
->endpoint_cfg
.reset_cold
= 2;
492 i2400mu
->endpoint_cfg
.bulk_in
= 3;
495 iface
->needs_remote_wakeup
= 1; /* autosuspend (15s delay) */
496 device_init_wakeup(dev
, 1);
497 usb_dev
->autosuspend_delay
= 15 * HZ
;
498 usb_dev
->autosuspend_disabled
= 0;
501 result
= i2400m_setup(i2400m
, I2400M_BRI_MAC_REINIT
);
503 dev_err(dev
, "cannot setup device: %d\n", result
);
506 result
= i2400mu_debugfs_add(i2400mu
);
508 dev_err(dev
, "Can't register i2400mu's debugfs: %d\n", result
);
509 goto error_debugfs_add
;
514 i2400m_release(i2400m
);
516 usb_set_intfdata(iface
, NULL
);
517 usb_put_dev(i2400mu
->usb_dev
);
518 free_netdev(net_dev
);
525 * Disconect a i2400m from the system.
527 * i2400m_stop() has been called before, so al the rx and tx contexts
528 * have been taken down already. Make sure the queue is stopped,
529 * unregister netdev and i2400m, free and kill.
532 void i2400mu_disconnect(struct usb_interface
*iface
)
534 struct i2400mu
*i2400mu
= usb_get_intfdata(iface
);
535 struct i2400m
*i2400m
= &i2400mu
->i2400m
;
536 struct net_device
*net_dev
= i2400m
->wimax_dev
.net_dev
;
537 struct device
*dev
= &iface
->dev
;
539 d_fnstart(3, dev
, "(iface %p i2400m %p)\n", iface
, i2400m
);
541 debugfs_remove_recursive(i2400mu
->debugfs_dentry
);
542 i2400m_release(i2400m
);
543 usb_set_intfdata(iface
, NULL
);
544 usb_put_dev(i2400mu
->usb_dev
);
545 free_netdev(net_dev
);
546 d_fnend(3, dev
, "(iface %p i2400m %p) = void\n", iface
, i2400m
);
551 * Get the device ready for USB port or system standby and hibernation
553 * USB port and system standby are handled the same.
555 * When the system hibernates, the USB device is powered down and then
556 * up, so we don't really have to do much here, as it will be seen as
557 * a reconnect. Still for simplicity we consider this case the same as
558 * suspend, so that the device has a chance to do notify the base
559 * station (if connected).
561 * So at the end, the three cases require common handling.
563 * If at the time of this call the device's firmware is not loaded,
564 * nothing has to be done. Note we can be "loose" about not reading
565 * i2400m->updown under i2400m->init_mutex. If it happens to change
566 * inmediately, other parts of the call flow will fail and effectively
569 * If the firmware is loaded, we need to:
571 * - tell the device to go into host interface power save mode, wait
574 * This is quite more interesting than it is; we need to execute a
575 * command, but this time, we don't want the code in usb-{tx,rx}.c
576 * to call the usb_autopm_get/put_interface() barriers as it'd
577 * deadlock, so we need to decrement i2400mu->do_autopm, that acts
578 * as a poor man's semaphore. Ugly, but it works.
580 * As well, the device might refuse going to sleep for whichever
581 * reason. In this case we just fail. For system suspend/hibernate,
582 * we *can't* fail. We check PM_EVENT_AUTO to see if the
583 * suspend call comes from the USB stack or from the system and act
586 * - stop the notification endpoint polling
589 int i2400mu_suspend(struct usb_interface
*iface
, pm_message_t pm_msg
)
592 struct device
*dev
= &iface
->dev
;
593 struct i2400mu
*i2400mu
= usb_get_intfdata(iface
);
594 unsigned is_autosuspend
= 0;
595 struct i2400m
*i2400m
= &i2400mu
->i2400m
;
598 if (pm_msg
.event
& PM_EVENT_AUTO
)
602 d_fnstart(3, dev
, "(iface %p pm_msg %u)\n", iface
, pm_msg
.event
);
603 rmb(); /* see i2400m->updown's documentation */
604 if (i2400m
->updown
== 0)
606 if (i2400m
->state
== I2400M_SS_DATA_PATH_CONNECTED
&& is_autosuspend
) {
607 /* ugh -- the device is connected and this suspend
608 * request is an autosuspend one (not a system standby
611 * The only way the device can go to standby is if the
612 * link with the base station is in IDLE mode; that
613 * were the case, we'd be in status
614 * I2400M_SS_CONNECTED_IDLE. But we are not.
616 * If we *tell* him to go power save now, it'll reset
617 * as a precautionary measure, so if this is an
618 * autosuspend thing, say no and it'll come back
619 * later, when the link is IDLE
622 d_printf(1, dev
, "fw up, link up, not-idle, autosuspend: "
623 "not entering powersave\n");
626 d_printf(1, dev
, "fw up: entering powersave\n");
627 atomic_dec(&i2400mu
->do_autopm
);
628 result
= i2400m_cmd_enter_powersave(i2400m
);
629 atomic_inc(&i2400mu
->do_autopm
);
630 if (result
< 0 && !is_autosuspend
) {
631 /* System suspend, can't fail */
632 dev_err(dev
, "failed to suspend, will reset on resume\n");
636 goto error_enter_powersave
;
637 i2400mu_notification_release(i2400mu
);
638 d_printf(1, dev
, "powersave requested\n");
639 error_enter_powersave
:
642 d_fnend(3, dev
, "(iface %p pm_msg %u) = %d\n",
643 iface
, pm_msg
.event
, result
);
649 int i2400mu_resume(struct usb_interface
*iface
)
652 struct device
*dev
= &iface
->dev
;
653 struct i2400mu
*i2400mu
= usb_get_intfdata(iface
);
654 struct i2400m
*i2400m
= &i2400mu
->i2400m
;
656 d_fnstart(3, dev
, "(iface %p)\n", iface
);
657 rmb(); /* see i2400m->updown's documentation */
658 if (i2400m
->updown
== 0) {
659 d_printf(1, dev
, "fw was down, no resume neeed\n");
662 d_printf(1, dev
, "fw was up, resuming\n");
663 i2400mu_notification_setup(i2400mu
);
664 /* USB has flow control, so we don't need to give it time to
665 * come back; otherwise, we'd use something like a get-state
668 d_fnend(3, dev
, "(iface %p) = %d\n", iface
, ret
);
674 int i2400mu_reset_resume(struct usb_interface
*iface
)
677 struct device
*dev
= &iface
->dev
;
678 struct i2400mu
*i2400mu
= usb_get_intfdata(iface
);
679 struct i2400m
*i2400m
= &i2400mu
->i2400m
;
681 d_fnstart(3, dev
, "(iface %p)\n", iface
);
682 result
= i2400m_dev_reset_handle(i2400m
, "device reset on resume");
683 d_fnend(3, dev
, "(iface %p) = %d\n", iface
, result
);
684 return result
< 0 ? result
: 0;
689 * Another driver or user space is triggering a reset on the device
690 * which contains the interface passed as an argument. Cease IO and
691 * save any device state you need to restore.
693 * If you need to allocate memory here, use GFP_NOIO or GFP_ATOMIC, if
694 * you are in atomic context.
697 int i2400mu_pre_reset(struct usb_interface
*iface
)
699 struct i2400mu
*i2400mu
= usb_get_intfdata(iface
);
700 return i2400m_pre_reset(&i2400mu
->i2400m
);
705 * The reset has completed. Restore any saved device state and begin
706 * using the device again.
708 * If you need to allocate memory here, use GFP_NOIO or GFP_ATOMIC, if
709 * you are in atomic context.
712 int i2400mu_post_reset(struct usb_interface
*iface
)
714 struct i2400mu
*i2400mu
= usb_get_intfdata(iface
);
715 return i2400m_post_reset(&i2400mu
->i2400m
);
720 struct usb_device_id i2400mu_id_table
[] = {
721 { USB_DEVICE(0x8086, USB_DEVICE_ID_I6050
) },
722 { USB_DEVICE(0x8086, 0x0181) },
723 { USB_DEVICE(0x8086, 0x1403) },
724 { USB_DEVICE(0x8086, 0x1405) },
725 { USB_DEVICE(0x8086, 0x0180) },
726 { USB_DEVICE(0x8086, 0x0182) },
727 { USB_DEVICE(0x8086, 0x1406) },
728 { USB_DEVICE(0x8086, 0x1403) },
731 MODULE_DEVICE_TABLE(usb
, i2400mu_id_table
);
735 struct usb_driver i2400mu_driver
= {
736 .name
= KBUILD_MODNAME
,
737 .suspend
= i2400mu_suspend
,
738 .resume
= i2400mu_resume
,
739 .reset_resume
= i2400mu_reset_resume
,
740 .probe
= i2400mu_probe
,
741 .disconnect
= i2400mu_disconnect
,
742 .pre_reset
= i2400mu_pre_reset
,
743 .post_reset
= i2400mu_post_reset
,
744 .id_table
= i2400mu_id_table
,
745 .supports_autosuspend
= 1,
749 int __init
i2400mu_driver_init(void)
751 d_parse_params(D_LEVEL
, D_LEVEL_SIZE
, i2400mu_debug_params
,
753 return usb_register(&i2400mu_driver
);
755 module_init(i2400mu_driver_init
);
759 void __exit
i2400mu_driver_exit(void)
761 flush_scheduled_work(); /* for the stuff we schedule from sysfs.c */
762 usb_deregister(&i2400mu_driver
);
764 module_exit(i2400mu_driver_exit
);
766 MODULE_AUTHOR("Intel Corporation <linux-wimax@intel.com>");
767 MODULE_DESCRIPTION("Driver for USB based Intel Wireless WiMAX Connection 2400M "
769 MODULE_LICENSE("GPL");
770 MODULE_FIRMWARE(I2400MU_FW_FILE_NAME_v1_4
);