rt2x00: Disable link tuning in rt2500usb
[linux-2.6.git] / drivers / net / wireless / rt2x00 / rt2500usb.c
1 /*
2         Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
3         <http://rt2x00.serialmonkey.com>
4
5         This program is free software; you can redistribute it and/or modify
6         it under the terms of the GNU General Public License as published by
7         the Free Software Foundation; either version 2 of the License, or
8         (at your option) any later version.
9
10         This program is distributed in the hope that it will be useful,
11         but WITHOUT ANY WARRANTY; without even the implied warranty of
12         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13         GNU General Public License for more details.
14
15         You should have received a copy of the GNU General Public License
16         along with this program; if not, write to the
17         Free Software Foundation, Inc.,
18         59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19  */
20
21 /*
22         Module: rt2500usb
23         Abstract: rt2500usb device specific routines.
24         Supported chipsets: RT2570.
25  */
26
27 #include <linux/delay.h>
28 #include <linux/etherdevice.h>
29 #include <linux/init.h>
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/usb.h>
33
34 #include "rt2x00.h"
35 #include "rt2x00usb.h"
36 #include "rt2500usb.h"
37
38 /*
39  * Register access.
40  * All access to the CSR registers will go through the methods
41  * rt2500usb_register_read and rt2500usb_register_write.
42  * BBP and RF register require indirect register access,
43  * and use the CSR registers BBPCSR and RFCSR to achieve this.
44  * These indirect registers work with busy bits,
45  * and we will try maximal REGISTER_BUSY_COUNT times to access
46  * the register while taking a REGISTER_BUSY_DELAY us delay
47  * between each attampt. When the busy bit is still set at that time,
48  * the access attempt is considered to have failed,
49  * and we will print an error.
50  * If the usb_cache_mutex is already held then the _lock variants must
51  * be used instead.
52  */
53 static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
54                                            const unsigned int offset,
55                                            u16 *value)
56 {
57         __le16 reg;
58         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
59                                       USB_VENDOR_REQUEST_IN, offset,
60                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
61         *value = le16_to_cpu(reg);
62 }
63
64 static inline void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
65                                                 const unsigned int offset,
66                                                 u16 *value)
67 {
68         __le16 reg;
69         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
70                                        USB_VENDOR_REQUEST_IN, offset,
71                                        &reg, sizeof(u16), REGISTER_TIMEOUT);
72         *value = le16_to_cpu(reg);
73 }
74
75 static inline void rt2500usb_register_multiread(struct rt2x00_dev *rt2x00dev,
76                                                 const unsigned int offset,
77                                                 void *value, const u16 length)
78 {
79         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
80                                       USB_VENDOR_REQUEST_IN, offset,
81                                       value, length,
82                                       REGISTER_TIMEOUT16(length));
83 }
84
85 static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
86                                             const unsigned int offset,
87                                             u16 value)
88 {
89         __le16 reg = cpu_to_le16(value);
90         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
91                                       USB_VENDOR_REQUEST_OUT, offset,
92                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
93 }
94
95 static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
96                                                  const unsigned int offset,
97                                                  u16 value)
98 {
99         __le16 reg = cpu_to_le16(value);
100         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
101                                        USB_VENDOR_REQUEST_OUT, offset,
102                                        &reg, sizeof(u16), REGISTER_TIMEOUT);
103 }
104
105 static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
106                                                  const unsigned int offset,
107                                                  void *value, const u16 length)
108 {
109         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
110                                       USB_VENDOR_REQUEST_OUT, offset,
111                                       value, length,
112                                       REGISTER_TIMEOUT16(length));
113 }
114
115 static u16 rt2500usb_bbp_check(struct rt2x00_dev *rt2x00dev)
116 {
117         u16 reg;
118         unsigned int i;
119
120         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
121                 rt2500usb_register_read_lock(rt2x00dev, PHY_CSR8, &reg);
122                 if (!rt2x00_get_field16(reg, PHY_CSR8_BUSY))
123                         break;
124                 udelay(REGISTER_BUSY_DELAY);
125         }
126
127         return reg;
128 }
129
130 static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
131                                 const unsigned int word, const u8 value)
132 {
133         u16 reg;
134
135         mutex_lock(&rt2x00dev->usb_cache_mutex);
136
137         /*
138          * Wait until the BBP becomes ready.
139          */
140         reg = rt2500usb_bbp_check(rt2x00dev);
141         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY))
142                 goto exit_fail;
143
144         /*
145          * Write the data into the BBP.
146          */
147         reg = 0;
148         rt2x00_set_field16(&reg, PHY_CSR7_DATA, value);
149         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
150         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 0);
151
152         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
153
154         mutex_unlock(&rt2x00dev->usb_cache_mutex);
155
156         return;
157
158 exit_fail:
159         mutex_unlock(&rt2x00dev->usb_cache_mutex);
160
161         ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
162 }
163
164 static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
165                                const unsigned int word, u8 *value)
166 {
167         u16 reg;
168
169         mutex_lock(&rt2x00dev->usb_cache_mutex);
170
171         /*
172          * Wait until the BBP becomes ready.
173          */
174         reg = rt2500usb_bbp_check(rt2x00dev);
175         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY))
176                 goto exit_fail;
177
178         /*
179          * Write the request into the BBP.
180          */
181         reg = 0;
182         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
183         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 1);
184
185         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
186
187         /*
188          * Wait until the BBP becomes ready.
189          */
190         reg = rt2500usb_bbp_check(rt2x00dev);
191         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY))
192                 goto exit_fail;
193
194         rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, &reg);
195         *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
196
197         mutex_unlock(&rt2x00dev->usb_cache_mutex);
198
199         return;
200
201 exit_fail:
202         mutex_unlock(&rt2x00dev->usb_cache_mutex);
203
204         ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
205         *value = 0xff;
206 }
207
208 static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev,
209                                const unsigned int word, const u32 value)
210 {
211         u16 reg;
212         unsigned int i;
213
214         if (!word)
215                 return;
216
217         mutex_lock(&rt2x00dev->usb_cache_mutex);
218
219         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
220                 rt2500usb_register_read_lock(rt2x00dev, PHY_CSR10, &reg);
221                 if (!rt2x00_get_field16(reg, PHY_CSR10_RF_BUSY))
222                         goto rf_write;
223                 udelay(REGISTER_BUSY_DELAY);
224         }
225
226         mutex_unlock(&rt2x00dev->usb_cache_mutex);
227         ERROR(rt2x00dev, "PHY_CSR10 register busy. Write failed.\n");
228         return;
229
230 rf_write:
231         reg = 0;
232         rt2x00_set_field16(&reg, PHY_CSR9_RF_VALUE, value);
233         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR9, reg);
234
235         reg = 0;
236         rt2x00_set_field16(&reg, PHY_CSR10_RF_VALUE, value >> 16);
237         rt2x00_set_field16(&reg, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
238         rt2x00_set_field16(&reg, PHY_CSR10_RF_IF_SELECT, 0);
239         rt2x00_set_field16(&reg, PHY_CSR10_RF_BUSY, 1);
240
241         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR10, reg);
242         rt2x00_rf_write(rt2x00dev, word, value);
243
244         mutex_unlock(&rt2x00dev->usb_cache_mutex);
245 }
246
247 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
248 #define CSR_OFFSET(__word)      ( CSR_REG_BASE + ((__word) * sizeof(u16)) )
249
250 static void rt2500usb_read_csr(struct rt2x00_dev *rt2x00dev,
251                                const unsigned int word, u32 *data)
252 {
253         rt2500usb_register_read(rt2x00dev, CSR_OFFSET(word), (u16 *) data);
254 }
255
256 static void rt2500usb_write_csr(struct rt2x00_dev *rt2x00dev,
257                                 const unsigned int word, u32 data)
258 {
259         rt2500usb_register_write(rt2x00dev, CSR_OFFSET(word), data);
260 }
261
262 static const struct rt2x00debug rt2500usb_rt2x00debug = {
263         .owner  = THIS_MODULE,
264         .csr    = {
265                 .read           = rt2500usb_read_csr,
266                 .write          = rt2500usb_write_csr,
267                 .word_size      = sizeof(u16),
268                 .word_count     = CSR_REG_SIZE / sizeof(u16),
269         },
270         .eeprom = {
271                 .read           = rt2x00_eeprom_read,
272                 .write          = rt2x00_eeprom_write,
273                 .word_size      = sizeof(u16),
274                 .word_count     = EEPROM_SIZE / sizeof(u16),
275         },
276         .bbp    = {
277                 .read           = rt2500usb_bbp_read,
278                 .write          = rt2500usb_bbp_write,
279                 .word_size      = sizeof(u8),
280                 .word_count     = BBP_SIZE / sizeof(u8),
281         },
282         .rf     = {
283                 .read           = rt2x00_rf_read,
284                 .write          = rt2500usb_rf_write,
285                 .word_size      = sizeof(u32),
286                 .word_count     = RF_SIZE / sizeof(u32),
287         },
288 };
289 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
290
291 #ifdef CONFIG_RT2500USB_LEDS
292 static void rt2500usb_brightness_set(struct led_classdev *led_cdev,
293                                      enum led_brightness brightness)
294 {
295         struct rt2x00_led *led =
296             container_of(led_cdev, struct rt2x00_led, led_dev);
297         unsigned int enabled = brightness != LED_OFF;
298         u16 reg;
299
300         rt2500usb_register_read(led->rt2x00dev, MAC_CSR20, &reg);
301
302         if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC)
303                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, enabled);
304         else if (led->type == LED_TYPE_ACTIVITY)
305                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, enabled);
306
307         rt2500usb_register_write(led->rt2x00dev, MAC_CSR20, reg);
308 }
309
310 static int rt2500usb_blink_set(struct led_classdev *led_cdev,
311                                unsigned long *delay_on,
312                                unsigned long *delay_off)
313 {
314         struct rt2x00_led *led =
315             container_of(led_cdev, struct rt2x00_led, led_dev);
316         u16 reg;
317
318         rt2500usb_register_read(led->rt2x00dev, MAC_CSR21, &reg);
319         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, *delay_on);
320         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, *delay_off);
321         rt2500usb_register_write(led->rt2x00dev, MAC_CSR21, reg);
322
323         return 0;
324 }
325
326 static void rt2500usb_init_led(struct rt2x00_dev *rt2x00dev,
327                                struct rt2x00_led *led,
328                                enum led_type type)
329 {
330         led->rt2x00dev = rt2x00dev;
331         led->type = type;
332         led->led_dev.brightness_set = rt2500usb_brightness_set;
333         led->led_dev.blink_set = rt2500usb_blink_set;
334         led->flags = LED_INITIALIZED;
335 }
336 #endif /* CONFIG_RT2500USB_LEDS */
337
338 /*
339  * Configuration handlers.
340  */
341 static void rt2500usb_config_filter(struct rt2x00_dev *rt2x00dev,
342                                     const unsigned int filter_flags)
343 {
344         u16 reg;
345
346         /*
347          * Start configuration steps.
348          * Note that the version error will always be dropped
349          * and broadcast frames will always be accepted since
350          * there is no filter for it at this time.
351          */
352         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
353         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
354                            !(filter_flags & FIF_FCSFAIL));
355         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
356                            !(filter_flags & FIF_PLCPFAIL));
357         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
358                            !(filter_flags & FIF_CONTROL));
359         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
360                            !(filter_flags & FIF_PROMISC_IN_BSS));
361         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
362                            !(filter_flags & FIF_PROMISC_IN_BSS) &&
363                            !rt2x00dev->intf_ap_count);
364         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
365         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
366                            !(filter_flags & FIF_ALLMULTI));
367         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
368         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
369 }
370
371 static void rt2500usb_config_intf(struct rt2x00_dev *rt2x00dev,
372                                   struct rt2x00_intf *intf,
373                                   struct rt2x00intf_conf *conf,
374                                   const unsigned int flags)
375 {
376         unsigned int bcn_preload;
377         u16 reg;
378
379         if (flags & CONFIG_UPDATE_TYPE) {
380                 /*
381                  * Enable beacon config
382                  */
383                 bcn_preload = PREAMBLE + get_duration(IEEE80211_HEADER, 20);
384                 rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
385                 rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET, bcn_preload >> 6);
386                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW,
387                                    2 * (conf->type != IEEE80211_IF_TYPE_STA));
388                 rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
389
390                 /*
391                  * Enable synchronisation.
392                  */
393                 rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
394                 rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
395                 rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
396
397                 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
398                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
399                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, conf->sync);
400                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
401                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
402         }
403
404         if (flags & CONFIG_UPDATE_MAC)
405                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, conf->mac,
406                                               (3 * sizeof(__le16)));
407
408         if (flags & CONFIG_UPDATE_BSSID)
409                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, conf->bssid,
410                                               (3 * sizeof(__le16)));
411 }
412
413 static void rt2500usb_config_erp(struct rt2x00_dev *rt2x00dev,
414                                  struct rt2x00lib_erp *erp)
415 {
416         u16 reg;
417
418         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
419         rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, erp->ack_timeout);
420         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
421
422         rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
423         rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
424                            !!erp->short_preamble);
425         rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
426 }
427
428 static void rt2500usb_config_phymode(struct rt2x00_dev *rt2x00dev,
429                                      const int basic_rate_mask)
430 {
431         rt2500usb_register_write(rt2x00dev, TXRX_CSR11, basic_rate_mask);
432 }
433
434 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
435                                      struct rf_channel *rf, const int txpower)
436 {
437         /*
438          * Set TXpower.
439          */
440         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
441
442         /*
443          * For RT2525E we should first set the channel to half band higher.
444          */
445         if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
446                 static const u32 vals[] = {
447                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
448                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
449                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
450                         0x00000902, 0x00000906
451                 };
452
453                 rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
454                 if (rf->rf4)
455                         rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
456         }
457
458         rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
459         rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
460         rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
461         if (rf->rf4)
462                 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
463 }
464
465 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
466                                      const int txpower)
467 {
468         u32 rf3;
469
470         rt2x00_rf_read(rt2x00dev, 3, &rf3);
471         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
472         rt2500usb_rf_write(rt2x00dev, 3, rf3);
473 }
474
475 static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev,
476                                      struct antenna_setup *ant)
477 {
478         u8 r2;
479         u8 r14;
480         u16 csr5;
481         u16 csr6;
482
483         /*
484          * We should never come here because rt2x00lib is supposed
485          * to catch this and send us the correct antenna explicitely.
486          */
487         BUG_ON(ant->rx == ANTENNA_SW_DIVERSITY ||
488                ant->tx == ANTENNA_SW_DIVERSITY);
489
490         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
491         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
492         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
493         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
494
495         /*
496          * Configure the TX antenna.
497          */
498         switch (ant->tx) {
499         case ANTENNA_HW_DIVERSITY:
500                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
501                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
502                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
503                 break;
504         case ANTENNA_A:
505                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
506                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
507                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
508                 break;
509         case ANTENNA_B:
510         default:
511                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
512                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
513                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
514                 break;
515         }
516
517         /*
518          * Configure the RX antenna.
519          */
520         switch (ant->rx) {
521         case ANTENNA_HW_DIVERSITY:
522                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
523                 break;
524         case ANTENNA_A:
525                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
526                 break;
527         case ANTENNA_B:
528         default:
529                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
530                 break;
531         }
532
533         /*
534          * RT2525E and RT5222 need to flip TX I/Q
535          */
536         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
537             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
538                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
539                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
540                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
541
542                 /*
543                  * RT2525E does not need RX I/Q Flip.
544                  */
545                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
546                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
547         } else {
548                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
549                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
550         }
551
552         rt2500usb_bbp_write(rt2x00dev, 2, r2);
553         rt2500usb_bbp_write(rt2x00dev, 14, r14);
554         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
555         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
556 }
557
558 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
559                                       struct rt2x00lib_conf *libconf)
560 {
561         u16 reg;
562
563         rt2500usb_register_write(rt2x00dev, MAC_CSR10, libconf->slot_time);
564         rt2500usb_register_write(rt2x00dev, MAC_CSR11, libconf->sifs);
565         rt2500usb_register_write(rt2x00dev, MAC_CSR12, libconf->eifs);
566
567         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
568         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
569                            libconf->conf->beacon_int * 4);
570         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
571 }
572
573 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
574                              struct rt2x00lib_conf *libconf,
575                              const unsigned int flags)
576 {
577         if (flags & CONFIG_UPDATE_PHYMODE)
578                 rt2500usb_config_phymode(rt2x00dev, libconf->basic_rates);
579         if (flags & CONFIG_UPDATE_CHANNEL)
580                 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
581                                          libconf->conf->power_level);
582         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
583                 rt2500usb_config_txpower(rt2x00dev,
584                                          libconf->conf->power_level);
585         if (flags & CONFIG_UPDATE_ANTENNA)
586                 rt2500usb_config_antenna(rt2x00dev, &libconf->ant);
587         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
588                 rt2500usb_config_duration(rt2x00dev, libconf);
589 }
590
591 /*
592  * Link tuning
593  */
594 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
595                                  struct link_qual *qual)
596 {
597         u16 reg;
598
599         /*
600          * Update FCS error count from register.
601          */
602         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
603         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
604
605         /*
606          * Update False CCA count from register.
607          */
608         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
609         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
610 }
611
612 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
613 {
614         u16 eeprom;
615         u16 value;
616
617         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
618         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
619         rt2500usb_bbp_write(rt2x00dev, 24, value);
620
621         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
622         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
623         rt2500usb_bbp_write(rt2x00dev, 25, value);
624
625         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
626         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
627         rt2500usb_bbp_write(rt2x00dev, 61, value);
628
629         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
630         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
631         rt2500usb_bbp_write(rt2x00dev, 17, value);
632
633         rt2x00dev->link.vgc_level = value;
634 }
635
636 /*
637  * NOTE: This function is directly ported from legacy driver, but
638  * despite it being declared it was never called. Although link tuning
639  * sounds like a good idea, and usually works well for the other drivers,
640  * it does _not_ work with rt2500usb. Enabling this function will result
641  * in TX capabilities only until association kicks in. Immediately
642  * after the successful association all TX frames will be kept in the
643  * hardware queue and never transmitted.
644  */
645 #if 0
646 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
647 {
648         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
649         u16 bbp_thresh;
650         u16 vgc_bound;
651         u16 sens;
652         u16 r24;
653         u16 r25;
654         u16 r61;
655         u16 r17_sens;
656         u8 r17;
657         u8 up_bound;
658         u8 low_bound;
659
660         /*
661          * Read current r17 value, as well as the sensitivity values
662          * for the r17 register.
663          */
664         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
665         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
666
667         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
668         up_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
669         low_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCLOWER);
670
671         /*
672          * If we are not associated, we should go straight to the
673          * dynamic CCA tuning.
674          */
675         if (!rt2x00dev->intf_associated)
676                 goto dynamic_cca_tune;
677
678         /*
679          * Determine the BBP tuning threshold and correctly
680          * set BBP 24, 25 and 61.
681          */
682         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
683         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
684
685         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
686         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
687         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
688
689         if ((rssi + bbp_thresh) > 0) {
690                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
691                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
692                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
693         } else {
694                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
695                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
696                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
697         }
698
699         rt2500usb_bbp_write(rt2x00dev, 24, r24);
700         rt2500usb_bbp_write(rt2x00dev, 25, r25);
701         rt2500usb_bbp_write(rt2x00dev, 61, r61);
702
703         /*
704          * A too low RSSI will cause too much false CCA which will
705          * then corrupt the R17 tuning. To remidy this the tuning should
706          * be stopped (While making sure the R17 value will not exceed limits)
707          */
708         if (rssi >= -40) {
709                 if (r17 != 0x60)
710                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
711                 return;
712         }
713
714         /*
715          * Special big-R17 for short distance
716          */
717         if (rssi >= -58) {
718                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
719                 if (r17 != sens)
720                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
721                 return;
722         }
723
724         /*
725          * Special mid-R17 for middle distance
726          */
727         if (rssi >= -74) {
728                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
729                 if (r17 != sens)
730                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
731                 return;
732         }
733
734         /*
735          * Leave short or middle distance condition, restore r17
736          * to the dynamic tuning range.
737          */
738         low_bound = 0x32;
739         if (rssi < -77)
740                 up_bound -= (-77 - rssi);
741
742         if (up_bound < low_bound)
743                 up_bound = low_bound;
744
745         if (r17 > up_bound) {
746                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
747                 rt2x00dev->link.vgc_level = up_bound;
748                 return;
749         }
750
751 dynamic_cca_tune:
752
753         /*
754          * R17 is inside the dynamic tuning range,
755          * start tuning the link based on the false cca counter.
756          */
757         if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
758                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
759                 rt2x00dev->link.vgc_level = r17;
760         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
761                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
762                 rt2x00dev->link.vgc_level = r17;
763         }
764 }
765 #else
766 #define rt2500usb_link_tuner    NULL
767 #endif
768
769 /*
770  * Initialization functions.
771  */
772 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
773 {
774         u16 reg;
775
776         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
777                                     USB_MODE_TEST, REGISTER_TIMEOUT);
778         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
779                                     0x00f0, REGISTER_TIMEOUT);
780
781         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
782         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
783         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
784
785         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
786         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
787
788         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
789         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
790         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
791         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
792         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
793
794         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
795         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
796         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
797         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
798         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
799
800         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
801         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
802         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
803         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
804         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
805         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
806
807         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
808         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
809         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
810         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
811         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
812         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
813
814         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
815         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
816         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
817         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
818         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
819         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
820
821         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
822         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
823         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
824         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
825         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
826         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
827
828         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
829         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
830         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, 0);
831         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
832         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
833         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
834
835         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
836         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
837
838         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
839                 return -EBUSY;
840
841         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
842         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
843         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
844         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
845         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
846
847         if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
848                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
849                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 0);
850         } else {
851                 reg = 0;
852                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 1);
853                 rt2x00_set_field16(&reg, PHY_CSR2_LNA_MODE, 3);
854         }
855         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
856
857         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
858         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
859         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
860         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
861
862         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
863         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
864                            rt2x00dev->rx->data_size);
865         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
866
867         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
868         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
869         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
870         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
871
872         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
873         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
874         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
875
876         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
877         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
878         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
879
880         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
881         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
882         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
883
884         return 0;
885 }
886
887 static int rt2500usb_wait_bbp_ready(struct rt2x00_dev *rt2x00dev)
888 {
889         unsigned int i;
890         u8 value;
891
892         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
893                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
894                 if ((value != 0xff) && (value != 0x00))
895                         return 0;
896                 udelay(REGISTER_BUSY_DELAY);
897         }
898
899         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
900         return -EACCES;
901 }
902
903 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
904 {
905         unsigned int i;
906         u16 eeprom;
907         u8 value;
908         u8 reg_id;
909
910         if (unlikely(rt2500usb_wait_bbp_ready(rt2x00dev)))
911                 return -EACCES;
912
913         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
914         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
915         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
916         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
917         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
918         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
919         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
920         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
921         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
922         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
923         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
924         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
925         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
926         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
927         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
928         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
929         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
930         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
931         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
932         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
933         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
934         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
935         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
936         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
937         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
938         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
939         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
940         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
941         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
942         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
943         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
944
945         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
946                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
947
948                 if (eeprom != 0xffff && eeprom != 0x0000) {
949                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
950                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
951                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
952                 }
953         }
954
955         return 0;
956 }
957
958 /*
959  * Device state switch handlers.
960  */
961 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
962                                 enum dev_state state)
963 {
964         u16 reg;
965
966         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
967         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
968                            (state == STATE_RADIO_RX_OFF) ||
969                            (state == STATE_RADIO_RX_OFF_LINK));
970         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
971 }
972
973 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
974 {
975         /*
976          * Initialize all registers.
977          */
978         if (unlikely(rt2500usb_init_registers(rt2x00dev) ||
979                      rt2500usb_init_bbp(rt2x00dev)))
980                 return -EIO;
981
982         return 0;
983 }
984
985 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
986 {
987         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
988         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
989
990         /*
991          * Disable synchronisation.
992          */
993         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
994
995         rt2x00usb_disable_radio(rt2x00dev);
996 }
997
998 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
999                                enum dev_state state)
1000 {
1001         u16 reg;
1002         u16 reg2;
1003         unsigned int i;
1004         char put_to_sleep;
1005         char bbp_state;
1006         char rf_state;
1007
1008         put_to_sleep = (state != STATE_AWAKE);
1009
1010         reg = 0;
1011         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
1012         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
1013         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
1014         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1015         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
1016         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1017
1018         /*
1019          * Device is not guaranteed to be in the requested state yet.
1020          * We must wait until the register indicates that the
1021          * device has entered the correct state.
1022          */
1023         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
1024                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
1025                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
1026                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
1027                 if (bbp_state == state && rf_state == state)
1028                         return 0;
1029                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1030                 msleep(30);
1031         }
1032
1033         return -EBUSY;
1034 }
1035
1036 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
1037                                       enum dev_state state)
1038 {
1039         int retval = 0;
1040
1041         switch (state) {
1042         case STATE_RADIO_ON:
1043                 retval = rt2500usb_enable_radio(rt2x00dev);
1044                 break;
1045         case STATE_RADIO_OFF:
1046                 rt2500usb_disable_radio(rt2x00dev);
1047                 break;
1048         case STATE_RADIO_RX_ON:
1049         case STATE_RADIO_RX_ON_LINK:
1050         case STATE_RADIO_RX_OFF:
1051         case STATE_RADIO_RX_OFF_LINK:
1052                 rt2500usb_toggle_rx(rt2x00dev, state);
1053                 break;
1054         case STATE_RADIO_IRQ_ON:
1055         case STATE_RADIO_IRQ_OFF:
1056                 /* No support, but no error either */
1057                 break;
1058         case STATE_DEEP_SLEEP:
1059         case STATE_SLEEP:
1060         case STATE_STANDBY:
1061         case STATE_AWAKE:
1062                 retval = rt2500usb_set_state(rt2x00dev, state);
1063                 break;
1064         default:
1065                 retval = -ENOTSUPP;
1066                 break;
1067         }
1068
1069         if (unlikely(retval))
1070                 ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n",
1071                       state, retval);
1072
1073         return retval;
1074 }
1075
1076 /*
1077  * TX descriptor initialization
1078  */
1079 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1080                                     struct sk_buff *skb,
1081                                     struct txentry_desc *txdesc)
1082 {
1083         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1084         __le32 *txd = skbdesc->desc;
1085         u32 word;
1086
1087         /*
1088          * Start writing the descriptor words.
1089          */
1090         rt2x00_desc_read(txd, 1, &word);
1091         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1092         rt2x00_set_field32(&word, TXD_W1_AIFS, txdesc->aifs);
1093         rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
1094         rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
1095         rt2x00_desc_write(txd, 1, word);
1096
1097         rt2x00_desc_read(txd, 2, &word);
1098         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
1099         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
1100         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
1101         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
1102         rt2x00_desc_write(txd, 2, word);
1103
1104         rt2x00_desc_read(txd, 0, &word);
1105         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, txdesc->retry_limit);
1106         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1107                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1108         rt2x00_set_field32(&word, TXD_W0_ACK,
1109                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1110         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1111                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1112         rt2x00_set_field32(&word, TXD_W0_OFDM,
1113                            test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
1114         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1115                            test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags));
1116         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1117         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT,
1118                            skb->len - skbdesc->desc_len);
1119         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1120         rt2x00_desc_write(txd, 0, word);
1121 }
1122
1123 /*
1124  * TX data initialization
1125  */
1126 static void rt2500usb_beacondone(struct urb *urb);
1127
1128 static void rt2500usb_write_beacon(struct queue_entry *entry)
1129 {
1130         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
1131         struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev);
1132         struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
1133         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1134         int pipe = usb_sndbulkpipe(usb_dev, 1);
1135         int length;
1136         u16 reg;
1137         u32 word, len;
1138
1139         /*
1140          * Add the descriptor in front of the skb.
1141          */
1142         skb_push(entry->skb, entry->queue->desc_size);
1143         memcpy(entry->skb->data, skbdesc->desc, skbdesc->desc_len);
1144         skbdesc->desc = entry->skb->data;
1145
1146         /*
1147          * Adjust the beacon databyte count. The current number is
1148          * calculated before this function gets called, but falsely
1149          * assumes that the descriptor was already present in the SKB.
1150          */
1151         rt2x00_desc_read(skbdesc->desc, 0, &word);
1152         len  = rt2x00_get_field32(word, TXD_W0_DATABYTE_COUNT);
1153         len += skbdesc->desc_len;
1154         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, len);
1155         rt2x00_desc_write(skbdesc->desc, 0, word);
1156
1157         /*
1158          * Disable beaconing while we are reloading the beacon data,
1159          * otherwise we might be sending out invalid data.
1160          */
1161         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1162         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
1163         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
1164         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
1165         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1166
1167         /*
1168          * USB devices cannot blindly pass the skb->len as the
1169          * length of the data to usb_fill_bulk_urb. Pass the skb
1170          * to the driver to determine what the length should be.
1171          */
1172         length = rt2x00dev->ops->lib->get_tx_data_len(rt2x00dev, entry->skb);
1173
1174         usb_fill_bulk_urb(bcn_priv->urb, usb_dev, pipe,
1175                           entry->skb->data, length, rt2500usb_beacondone,
1176                           entry);
1177
1178         /*
1179          * Second we need to create the guardian byte.
1180          * We only need a single byte, so lets recycle
1181          * the 'flags' field we are not using for beacons.
1182          */
1183         bcn_priv->guardian_data = 0;
1184         usb_fill_bulk_urb(bcn_priv->guardian_urb, usb_dev, pipe,
1185                           &bcn_priv->guardian_data, 1, rt2500usb_beacondone,
1186                           entry);
1187
1188         /*
1189          * Send out the guardian byte.
1190          */
1191         usb_submit_urb(bcn_priv->guardian_urb, GFP_ATOMIC);
1192 }
1193
1194 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1195                                      struct sk_buff *skb)
1196 {
1197         int length;
1198
1199         /*
1200          * The length _must_ be a multiple of 2,
1201          * but it must _not_ be a multiple of the USB packet size.
1202          */
1203         length = roundup(skb->len, 2);
1204         length += (2 * !(length % rt2x00dev->usb_maxpacket));
1205
1206         return length;
1207 }
1208
1209 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1210                                     const enum data_queue_qid queue)
1211 {
1212         u16 reg;
1213
1214         if (queue != QID_BEACON) {
1215                 rt2x00usb_kick_tx_queue(rt2x00dev, queue);
1216                 return;
1217         }
1218
1219         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1220         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1221                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
1222                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
1223                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1224                 /*
1225                  * Beacon generation will fail initially.
1226                  * To prevent this we need to register the TXRX_CSR19
1227                  * register several times.
1228                  */
1229                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1230                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1231                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1232                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1233                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1234         }
1235 }
1236
1237 /*
1238  * RX control handlers
1239  */
1240 static void rt2500usb_fill_rxdone(struct queue_entry *entry,
1241                                   struct rxdone_entry_desc *rxdesc)
1242 {
1243         struct queue_entry_priv_usb *entry_priv = entry->priv_data;
1244         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1245         __le32 *rxd =
1246             (__le32 *)(entry->skb->data +
1247                        (entry_priv->urb->actual_length -
1248                         entry->queue->desc_size));
1249         u32 word0;
1250         u32 word1;
1251
1252         /*
1253          * Copy descriptor to the skbdesc->desc buffer, making it safe from moving of
1254          * frame data in rt2x00usb.
1255          */
1256         memcpy(skbdesc->desc, rxd, skbdesc->desc_len);
1257         rxd = (__le32 *)skbdesc->desc;
1258
1259         /*
1260          * It is now safe to read the descriptor on all architectures.
1261          */
1262         rt2x00_desc_read(rxd, 0, &word0);
1263         rt2x00_desc_read(rxd, 1, &word1);
1264
1265         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1266                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1267         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1268                 rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1269
1270         /*
1271          * Obtain the status about this packet.
1272          * When frame was received with an OFDM bitrate,
1273          * the signal is the PLCP value. If it was received with
1274          * a CCK bitrate the signal is the rate in 100kbit/s.
1275          */
1276         rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1277         rxdesc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1278             entry->queue->rt2x00dev->rssi_offset;
1279         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1280
1281         if (rt2x00_get_field32(word0, RXD_W0_OFDM))
1282                 rxdesc->dev_flags |= RXDONE_SIGNAL_PLCP;
1283         if (rt2x00_get_field32(word0, RXD_W0_MY_BSS))
1284                 rxdesc->dev_flags |= RXDONE_MY_BSS;
1285
1286         /*
1287          * Adjust the skb memory window to the frame boundaries.
1288          */
1289         skb_trim(entry->skb, rxdesc->size);
1290 }
1291
1292 /*
1293  * Interrupt functions.
1294  */
1295 static void rt2500usb_beacondone(struct urb *urb)
1296 {
1297         struct queue_entry *entry = (struct queue_entry *)urb->context;
1298         struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
1299
1300         if (!test_bit(DEVICE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags))
1301                 return;
1302
1303         /*
1304          * Check if this was the guardian beacon,
1305          * if that was the case we need to send the real beacon now.
1306          * Otherwise we should free the sk_buffer, the device
1307          * should be doing the rest of the work now.
1308          */
1309         if (bcn_priv->guardian_urb == urb) {
1310                 usb_submit_urb(bcn_priv->urb, GFP_ATOMIC);
1311         } else if (bcn_priv->urb == urb) {
1312                 dev_kfree_skb(entry->skb);
1313                 entry->skb = NULL;
1314         }
1315 }
1316
1317 /*
1318  * Device probe functions.
1319  */
1320 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1321 {
1322         u16 word;
1323         u8 *mac;
1324         u8 bbp;
1325
1326         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1327
1328         /*
1329          * Start validation of the data that has been read.
1330          */
1331         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1332         if (!is_valid_ether_addr(mac)) {
1333                 DECLARE_MAC_BUF(macbuf);
1334
1335                 random_ether_addr(mac);
1336                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1337         }
1338
1339         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1340         if (word == 0xffff) {
1341                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1342                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1343                                    ANTENNA_SW_DIVERSITY);
1344                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1345                                    ANTENNA_SW_DIVERSITY);
1346                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1347                                    LED_MODE_DEFAULT);
1348                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1349                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1350                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1351                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1352                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1353         }
1354
1355         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1356         if (word == 0xffff) {
1357                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1358                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1359                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1360                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1361                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1362         }
1363
1364         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1365         if (word == 0xffff) {
1366                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1367                                    DEFAULT_RSSI_OFFSET);
1368                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1369                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1370         }
1371
1372         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1373         if (word == 0xffff) {
1374                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1375                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1376                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1377         }
1378
1379         /*
1380          * Switch lower vgc bound to current BBP R17 value,
1381          * lower the value a bit for better quality.
1382          */
1383         rt2500usb_bbp_read(rt2x00dev, 17, &bbp);
1384         bbp -= 6;
1385
1386         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1387         if (word == 0xffff) {
1388                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1389                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1390                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1391                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1392         } else {
1393                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1394                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1395         }
1396
1397         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1398         if (word == 0xffff) {
1399                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1400                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1401                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1402                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1403         }
1404
1405         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1406         if (word == 0xffff) {
1407                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1408                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1409                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1410                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1411         }
1412
1413         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1414         if (word == 0xffff) {
1415                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1416                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1417                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1418                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1419         }
1420
1421         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1422         if (word == 0xffff) {
1423                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1424                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1425                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1426                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1427         }
1428
1429         return 0;
1430 }
1431
1432 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1433 {
1434         u16 reg;
1435         u16 value;
1436         u16 eeprom;
1437
1438         /*
1439          * Read EEPROM word for configuration.
1440          */
1441         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1442
1443         /*
1444          * Identify RF chipset.
1445          */
1446         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1447         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1448         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1449
1450         if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1451                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1452                 return -ENODEV;
1453         }
1454
1455         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1456             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1457             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1458             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1459             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1460             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1461                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1462                 return -ENODEV;
1463         }
1464
1465         /*
1466          * Identify default antenna configuration.
1467          */
1468         rt2x00dev->default_ant.tx =
1469             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1470         rt2x00dev->default_ant.rx =
1471             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1472
1473         /*
1474          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1475          * I am not 100% sure about this, but the legacy drivers do not
1476          * indicate antenna swapping in software is required when
1477          * diversity is enabled.
1478          */
1479         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1480                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1481         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1482                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1483
1484         /*
1485          * Store led mode, for correct led behaviour.
1486          */
1487 #ifdef CONFIG_RT2500USB_LEDS
1488         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1489
1490         rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO);
1491         if (value == LED_MODE_TXRX_ACTIVITY)
1492                 rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_qual,
1493                                    LED_TYPE_ACTIVITY);
1494 #endif /* CONFIG_RT2500USB_LEDS */
1495
1496         /*
1497          * Check if the BBP tuning should be disabled.
1498          */
1499         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1500         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1501                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1502
1503         /*
1504          * Read the RSSI <-> dBm offset information.
1505          */
1506         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1507         rt2x00dev->rssi_offset =
1508             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1509
1510         return 0;
1511 }
1512
1513 /*
1514  * RF value list for RF2522
1515  * Supports: 2.4 GHz
1516  */
1517 static const struct rf_channel rf_vals_bg_2522[] = {
1518         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1519         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1520         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1521         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1522         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1523         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1524         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1525         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1526         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1527         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1528         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1529         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1530         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1531         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1532 };
1533
1534 /*
1535  * RF value list for RF2523
1536  * Supports: 2.4 GHz
1537  */
1538 static const struct rf_channel rf_vals_bg_2523[] = {
1539         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1540         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1541         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1542         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1543         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1544         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1545         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1546         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1547         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1548         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1549         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1550         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1551         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1552         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1553 };
1554
1555 /*
1556  * RF value list for RF2524
1557  * Supports: 2.4 GHz
1558  */
1559 static const struct rf_channel rf_vals_bg_2524[] = {
1560         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1561         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1562         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1563         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1564         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1565         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1566         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1567         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1568         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1569         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1570         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1571         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1572         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1573         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1574 };
1575
1576 /*
1577  * RF value list for RF2525
1578  * Supports: 2.4 GHz
1579  */
1580 static const struct rf_channel rf_vals_bg_2525[] = {
1581         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1582         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1583         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1584         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1585         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1586         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1587         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1588         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1589         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1590         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1591         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1592         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1593         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1594         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1595 };
1596
1597 /*
1598  * RF value list for RF2525e
1599  * Supports: 2.4 GHz
1600  */
1601 static const struct rf_channel rf_vals_bg_2525e[] = {
1602         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1603         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1604         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1605         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1606         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1607         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1608         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1609         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1610         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1611         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1612         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1613         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1614         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1615         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1616 };
1617
1618 /*
1619  * RF value list for RF5222
1620  * Supports: 2.4 GHz & 5.2 GHz
1621  */
1622 static const struct rf_channel rf_vals_5222[] = {
1623         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1624         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1625         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1626         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1627         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1628         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1629         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1630         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1631         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1632         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1633         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1634         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1635         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1636         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1637
1638         /* 802.11 UNI / HyperLan 2 */
1639         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1640         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1641         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1642         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1643         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1644         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1645         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1646         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1647
1648         /* 802.11 HyperLan 2 */
1649         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1650         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1651         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1652         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1653         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1654         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1655         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1656         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1657         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1658         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1659
1660         /* 802.11 UNII */
1661         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1662         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1663         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1664         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1665         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1666 };
1667
1668 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1669 {
1670         struct hw_mode_spec *spec = &rt2x00dev->spec;
1671         u8 *txpower;
1672         unsigned int i;
1673
1674         /*
1675          * Initialize all hw fields.
1676          */
1677         rt2x00dev->hw->flags =
1678             IEEE80211_HW_RX_INCLUDES_FCS |
1679             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1680             IEEE80211_HW_SIGNAL_DBM;
1681
1682         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1683
1684         SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev);
1685         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1686                                 rt2x00_eeprom_addr(rt2x00dev,
1687                                                    EEPROM_MAC_ADDR_0));
1688
1689         /*
1690          * Convert tx_power array in eeprom.
1691          */
1692         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1693         for (i = 0; i < 14; i++)
1694                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1695
1696         /*
1697          * Initialize hw_mode information.
1698          */
1699         spec->supported_bands = SUPPORT_BAND_2GHZ;
1700         spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;
1701         spec->tx_power_a = NULL;
1702         spec->tx_power_bg = txpower;
1703         spec->tx_power_default = DEFAULT_TXPOWER;
1704
1705         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1706                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1707                 spec->channels = rf_vals_bg_2522;
1708         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1709                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1710                 spec->channels = rf_vals_bg_2523;
1711         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1712                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1713                 spec->channels = rf_vals_bg_2524;
1714         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1715                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1716                 spec->channels = rf_vals_bg_2525;
1717         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1718                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1719                 spec->channels = rf_vals_bg_2525e;
1720         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1721                 spec->supported_bands |= SUPPORT_BAND_5GHZ;
1722                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1723                 spec->channels = rf_vals_5222;
1724         }
1725 }
1726
1727 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1728 {
1729         int retval;
1730
1731         /*
1732          * Allocate eeprom data.
1733          */
1734         retval = rt2500usb_validate_eeprom(rt2x00dev);
1735         if (retval)
1736                 return retval;
1737
1738         retval = rt2500usb_init_eeprom(rt2x00dev);
1739         if (retval)
1740                 return retval;
1741
1742         /*
1743          * Initialize hw specifications.
1744          */
1745         rt2500usb_probe_hw_mode(rt2x00dev);
1746
1747         /*
1748          * This device requires the atim queue
1749          */
1750         __set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
1751         __set_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
1752         __set_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags);
1753         __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1754
1755         /*
1756          * Set the rssi offset.
1757          */
1758         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1759
1760         return 0;
1761 }
1762
1763 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1764         .tx                     = rt2x00mac_tx,
1765         .start                  = rt2x00mac_start,
1766         .stop                   = rt2x00mac_stop,
1767         .add_interface          = rt2x00mac_add_interface,
1768         .remove_interface       = rt2x00mac_remove_interface,
1769         .config                 = rt2x00mac_config,
1770         .config_interface       = rt2x00mac_config_interface,
1771         .configure_filter       = rt2x00mac_configure_filter,
1772         .get_stats              = rt2x00mac_get_stats,
1773         .bss_info_changed       = rt2x00mac_bss_info_changed,
1774         .conf_tx                = rt2x00mac_conf_tx,
1775         .get_tx_stats           = rt2x00mac_get_tx_stats,
1776 };
1777
1778 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1779         .probe_hw               = rt2500usb_probe_hw,
1780         .initialize             = rt2x00usb_initialize,
1781         .uninitialize           = rt2x00usb_uninitialize,
1782         .init_rxentry           = rt2x00usb_init_rxentry,
1783         .init_txentry           = rt2x00usb_init_txentry,
1784         .set_device_state       = rt2500usb_set_device_state,
1785         .link_stats             = rt2500usb_link_stats,
1786         .reset_tuner            = rt2500usb_reset_tuner,
1787         .link_tuner             = rt2500usb_link_tuner,
1788         .write_tx_desc          = rt2500usb_write_tx_desc,
1789         .write_tx_data          = rt2x00usb_write_tx_data,
1790         .write_beacon           = rt2500usb_write_beacon,
1791         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1792         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1793         .fill_rxdone            = rt2500usb_fill_rxdone,
1794         .config_filter          = rt2500usb_config_filter,
1795         .config_intf            = rt2500usb_config_intf,
1796         .config_erp             = rt2500usb_config_erp,
1797         .config                 = rt2500usb_config,
1798 };
1799
1800 static const struct data_queue_desc rt2500usb_queue_rx = {
1801         .entry_num              = RX_ENTRIES,
1802         .data_size              = DATA_FRAME_SIZE,
1803         .desc_size              = RXD_DESC_SIZE,
1804         .priv_size              = sizeof(struct queue_entry_priv_usb),
1805 };
1806
1807 static const struct data_queue_desc rt2500usb_queue_tx = {
1808         .entry_num              = TX_ENTRIES,
1809         .data_size              = DATA_FRAME_SIZE,
1810         .desc_size              = TXD_DESC_SIZE,
1811         .priv_size              = sizeof(struct queue_entry_priv_usb),
1812 };
1813
1814 static const struct data_queue_desc rt2500usb_queue_bcn = {
1815         .entry_num              = BEACON_ENTRIES,
1816         .data_size              = MGMT_FRAME_SIZE,
1817         .desc_size              = TXD_DESC_SIZE,
1818         .priv_size              = sizeof(struct queue_entry_priv_usb_bcn),
1819 };
1820
1821 static const struct data_queue_desc rt2500usb_queue_atim = {
1822         .entry_num              = ATIM_ENTRIES,
1823         .data_size              = DATA_FRAME_SIZE,
1824         .desc_size              = TXD_DESC_SIZE,
1825         .priv_size              = sizeof(struct queue_entry_priv_usb),
1826 };
1827
1828 static const struct rt2x00_ops rt2500usb_ops = {
1829         .name           = KBUILD_MODNAME,
1830         .max_sta_intf   = 1,
1831         .max_ap_intf    = 1,
1832         .eeprom_size    = EEPROM_SIZE,
1833         .rf_size        = RF_SIZE,
1834         .tx_queues      = NUM_TX_QUEUES,
1835         .rx             = &rt2500usb_queue_rx,
1836         .tx             = &rt2500usb_queue_tx,
1837         .bcn            = &rt2500usb_queue_bcn,
1838         .atim           = &rt2500usb_queue_atim,
1839         .lib            = &rt2500usb_rt2x00_ops,
1840         .hw             = &rt2500usb_mac80211_ops,
1841 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1842         .debugfs        = &rt2500usb_rt2x00debug,
1843 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1844 };
1845
1846 /*
1847  * rt2500usb module information.
1848  */
1849 static struct usb_device_id rt2500usb_device_table[] = {
1850         /* ASUS */
1851         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1852         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1853         /* Belkin */
1854         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1855         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1856         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1857         /* Cisco Systems */
1858         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1859         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1860         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1861         /* Conceptronic */
1862         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1863         /* D-LINK */
1864         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1865         /* Gigabyte */
1866         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1867         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1868         /* Hercules */
1869         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1870         /* Melco */
1871         { USB_DEVICE(0x0411, 0x005e), USB_DEVICE_DATA(&rt2500usb_ops) },
1872         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1873         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1874         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1875         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1876         /* MSI */
1877         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1878         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1879         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1880         /* Ralink */
1881         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1882         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1883         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1884         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1885         /* Siemens */
1886         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1887         /* SMC */
1888         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1889         /* Spairon */
1890         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1891         /* Trust */
1892         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1893         /* Zinwell */
1894         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1895         { 0, }
1896 };
1897
1898 MODULE_AUTHOR(DRV_PROJECT);
1899 MODULE_VERSION(DRV_VERSION);
1900 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1901 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1902 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1903 MODULE_LICENSE("GPL");
1904
1905 static struct usb_driver rt2500usb_driver = {
1906         .name           = KBUILD_MODNAME,
1907         .id_table       = rt2500usb_device_table,
1908         .probe          = rt2x00usb_probe,
1909         .disconnect     = rt2x00usb_disconnect,
1910         .suspend        = rt2x00usb_suspend,
1911         .resume         = rt2x00usb_resume,
1912 };
1913
1914 static int __init rt2500usb_init(void)
1915 {
1916         return usb_register(&rt2500usb_driver);
1917 }
1918
1919 static void __exit rt2500usb_exit(void)
1920 {
1921         usb_deregister(&rt2500usb_driver);
1922 }
1923
1924 module_init(rt2500usb_init);
1925 module_exit(rt2500usb_exit);