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Merge branch 'adm8668'
[openwrt/openwrt.git] / target / linux / adm8668 / files / arch / mips / adm8668 / net_core.c
1 /*
2 * originally drivers/net/tulip_core.c
3 * Copyright 2000,2001 The Linux Kernel Team
4 * Written/copyright 1994-2001 by Donald Becker.
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10
11 #define DRV_NAME "tulip"
12 #define DRV_VERSION "1.1.15-NAPI" /* Keep at least for test */
13 #define DRV_RELDATE "Feb 27, 2007"
14
15 #include "net.h"
16
17 static char version[] __devinitdata =
18 "ADM8668net driver version " DRV_VERSION " (" DRV_RELDATE ")\n";
19
20 #define MAX_UNITS 2
21
22 /*
23 Set the bus performance register.
24 Typical: Set 16 longword cache alignment, no burst limit.
25 Cache alignment bits 15:14 Burst length 13:8
26 0000 No alignment 0x00000000 unlimited 0800 8 longwords
27 4000 8 longwords 0100 1 longword 1000 16 longwords
28 8000 16 longwords 0200 2 longwords 2000 32 longwords
29 C000 32 longwords 0400 4 longwords
30 Warning: many older 486 systems are broken and require setting 0x00A04800
31 8 longword cache alignment, 8 longword burst.
32 ToDo: Non-Intel setting could be better.
33 */
34
35 //static int csr0 = 0x00200000 | 0x4000;
36 static int csr0 = 0;
37
38 /* Operational parameters that usually are not changed. */
39 /* Time in jiffies before concluding the transmitter is hung. */
40 #define TX_TIMEOUT (4*HZ)
41
42 MODULE_AUTHOR("Scott Nicholas <neutronscott@scottn.us>");
43 MODULE_DESCRIPTION("ADM8668 new ethernet driver.");
44 MODULE_LICENSE("GPL");
45 MODULE_VERSION(DRV_VERSION);
46
47 #ifdef TULIP_DEBUG
48 int tulip_debug = TULIP_DEBUG;
49 #else
50 int tulip_debug = 1;
51 #endif
52
53 static void tulip_tx_timeout(struct net_device *dev);
54 static void tulip_init_ring(struct net_device *dev);
55 static void tulip_free_ring(struct net_device *dev);
56 static netdev_tx_t tulip_start_xmit(struct sk_buff *skb,
57 struct net_device *dev);
58 static int tulip_open(struct net_device *dev);
59 static int tulip_close(struct net_device *dev);
60 static void tulip_up(struct net_device *dev);
61 static void tulip_down(struct net_device *dev);
62 static struct net_device_stats *tulip_get_stats(struct net_device *dev);
63 //static int private_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
64 static void set_rx_mode(struct net_device *dev);
65 #ifdef CONFIG_NET_POLL_CONTROLLER
66 static void poll_tulip(struct net_device *dev);
67 #endif
68
69 static void tulip_up(struct net_device *dev)
70 {
71 struct tulip_private *tp = netdev_priv(dev);
72 void __iomem *ioaddr = tp->base_addr;
73
74 napi_enable(&tp->napi);
75
76 /* Reset the chip, holding bit 0 set at least 50 PCI cycles. */
77 iowrite32(0x00000001, ioaddr + CSR0);
78
79 /* Deassert reset.
80 Wait the specified 50 PCI cycles after a reset by initializing
81 Tx and Rx queues and the address filter list. */
82 iowrite32(tp->csr0, ioaddr + CSR0);
83
84 if (tulip_debug > 1)
85 printk(KERN_DEBUG "%s: tulip_up(), irq==%d\n",
86 dev->name, dev->irq);
87
88 iowrite32(tp->rx_ring_dma, ioaddr + CSR3);
89 iowrite32(tp->tx_ring_dma, ioaddr + CSR4);
90 tp->cur_rx = tp->cur_tx = 0;
91 tp->dirty_rx = tp->dirty_tx = 0;
92
93 /* set mac address */
94 iowrite32(get_unaligned_le32(dev->dev_addr), ioaddr + 0xA4);
95 iowrite32(get_unaligned_le16(dev->dev_addr + 4), ioaddr + 0xA8);
96 iowrite32(0, ioaddr + CSR27);
97 iowrite32(0, ioaddr + CSR28);
98
99 tp->csr6 = 0;
100
101 /* Enable automatic Tx underrun recovery. */
102 iowrite32(ioread32(ioaddr + CSR18) | 1, ioaddr + CSR18);
103 tp->csr6 = 0x00040000;
104
105 /* Start the chip's Tx to process setup frame. */
106 tulip_stop_rxtx(tp);
107 barrier();
108 udelay(5);
109 iowrite32(tp->csr6 | TxOn, ioaddr + CSR6);
110
111 /* Enable interrupts by setting the interrupt mask. */
112 iowrite32(VALID_INTR, ioaddr + CSR5);
113 iowrite32(VALID_INTR, ioaddr + CSR7);
114 tulip_start_rxtx(tp);
115 iowrite32(0, ioaddr + CSR2); /* Rx poll demand */
116
117 if (tulip_debug > 2) {
118 printk(KERN_DEBUG "%s: Done tulip_up(), CSR0 %08x, CSR5 %08x CSR6 %08x\n",
119 dev->name, ioread32(ioaddr + CSR0),
120 ioread32(ioaddr + CSR5),
121 ioread32(ioaddr + CSR6));
122 }
123
124 init_timer(&tp->oom_timer);
125 tp->oom_timer.data = (unsigned long)dev;
126 tp->oom_timer.function = oom_timer;
127 }
128
129 static int
130 tulip_open(struct net_device *dev)
131 {
132 int retval;
133
134 tulip_init_ring (dev);
135
136 retval = request_irq(dev->irq, tulip_interrupt, IRQF_SHARED, dev->name, dev);
137 if (retval)
138 goto free_ring;
139
140 tulip_up (dev);
141
142 netif_start_queue (dev);
143
144 return 0;
145
146 free_ring:
147 tulip_free_ring (dev);
148 return retval;
149 }
150
151
152 static void tulip_tx_timeout(struct net_device *dev)
153 {
154 struct tulip_private *tp = netdev_priv(dev);
155 void __iomem *ioaddr = tp->base_addr;
156 unsigned long flags;
157
158 spin_lock_irqsave (&tp->lock, flags);
159
160 dev_warn(&dev->dev,
161 "Transmit timed out, status %08x, CSR12 %08x, resetting...\n",
162 ioread32(ioaddr + CSR5), ioread32(ioaddr + CSR12));
163
164 tulip_tx_timeout_complete(tp, ioaddr);
165
166 spin_unlock_irqrestore (&tp->lock, flags);
167 dev->trans_start = jiffies; /* prevent tx timeout */
168 netif_wake_queue (dev);
169 }
170
171
172 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
173 static void tulip_init_ring(struct net_device *dev)
174 {
175 struct tulip_private *tp = netdev_priv(dev);
176 int i;
177
178 tp->nir = 0;
179
180 for (i = 0; i < RX_RING_SIZE; i++) {
181 tp->rx_ring[i].status = 0x00000000;
182 tp->rx_ring[i].length = cpu_to_le32(PKT_BUF_SZ);
183 tp->rx_ring[i].buffer2 = cpu_to_le32(tp->rx_ring_dma + sizeof(struct tulip_rx_desc) * (i + 1));
184 tp->rx_buffers[i].skb = NULL;
185 tp->rx_buffers[i].mapping = 0;
186 }
187 /* Mark the last entry as wrapping the ring. */
188 tp->rx_ring[i-1].length = cpu_to_le32(PKT_BUF_SZ | DESC_RING_WRAP);
189 tp->rx_ring[i-1].buffer2 = cpu_to_le32(tp->rx_ring_dma);
190
191 for (i = 0; i < RX_RING_SIZE; i++) {
192 dma_addr_t mapping;
193 /* Note the receive buffer must be longword aligned.
194 dev_alloc_skb() provides 16 byte alignment. But do *not*
195 use skb_reserve() to align the IP header! */
196 struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ);
197 tp->rx_buffers[i].skb = skb;
198 if (skb == NULL)
199 break;
200 mapping = dma_map_single(&dev->dev, skb->data,
201 PKT_BUF_SZ, DMA_FROM_DEVICE);
202 tp->rx_buffers[i].mapping = mapping;
203 skb->dev = dev; /* Mark as being used by this device. */
204 tp->rx_ring[i].status = cpu_to_le32(DescOwned); /* Owned by Tulip chip */
205 tp->rx_ring[i].buffer1 = cpu_to_le32(mapping);
206 }
207 tp->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
208
209 /* The Tx buffer descriptor is filled in as needed, but we
210 do need to clear the ownership bit. */
211 for (i = 0; i < TX_RING_SIZE; i++) {
212 tp->tx_buffers[i].skb = NULL;
213 tp->tx_buffers[i].mapping = 0;
214 tp->tx_ring[i].status = 0x00000000;
215 tp->tx_ring[i].buffer2 = cpu_to_le32(tp->tx_ring_dma + sizeof(struct tulip_tx_desc) * (i + 1));
216 }
217 tp->tx_ring[i-1].buffer2 = cpu_to_le32(tp->tx_ring_dma);
218 }
219
220 static netdev_tx_t
221 tulip_start_xmit(struct sk_buff *skb, struct net_device *dev)
222 {
223 struct tulip_private *tp = netdev_priv(dev);
224 int entry;
225 u32 flag;
226 dma_addr_t mapping;
227 unsigned long flags;
228
229 spin_lock_irqsave(&tp->lock, flags);
230
231 /* Calculate the next Tx descriptor entry. */
232 entry = tp->cur_tx % TX_RING_SIZE;
233
234 tp->tx_buffers[entry].skb = skb;
235 mapping = dma_map_single(&tp->pdev->dev, skb->data, skb->len,
236 DMA_TO_DEVICE);
237 tp->tx_buffers[entry].mapping = mapping;
238 tp->tx_ring[entry].buffer1 = cpu_to_le32(mapping);
239
240 if (tp->cur_tx - tp->dirty_tx < TX_RING_SIZE/2) {/* Typical path */
241 flag = 0x60000000; /* No interrupt */
242 } else if (tp->cur_tx - tp->dirty_tx == TX_RING_SIZE/2) {
243 flag = 0xe0000000; /* Tx-done intr. */
244 } else if (tp->cur_tx - tp->dirty_tx < TX_RING_SIZE - 2) {
245 flag = 0x60000000; /* No Tx-done intr. */
246 } else { /* Leave room for set_rx_mode() to fill entries. */
247 flag = 0xe0000000; /* Tx-done intr. */
248 netif_stop_queue(dev);
249 }
250 if (entry == TX_RING_SIZE-1)
251 flag = 0xe0000000 | DESC_RING_WRAP;
252
253 tp->tx_ring[entry].length = cpu_to_le32(skb->len | flag);
254 /* if we were using Transmit Automatic Polling, we would need a
255 * wmb() here. */
256 tp->tx_ring[entry].status = cpu_to_le32(DescOwned);
257 wmb();
258
259 tp->cur_tx++;
260
261 /* Trigger an immediate transmit demand. */
262 iowrite32(0, tp->base_addr + CSR1);
263
264 spin_unlock_irqrestore(&tp->lock, flags);
265
266 return NETDEV_TX_OK;
267 }
268
269 static void tulip_clean_tx_ring(struct tulip_private *tp)
270 {
271 unsigned int dirty_tx;
272
273 for (dirty_tx = tp->dirty_tx ; tp->cur_tx - dirty_tx > 0;
274 dirty_tx++) {
275 int entry = dirty_tx % TX_RING_SIZE;
276 int status = le32_to_cpu(tp->tx_ring[entry].status);
277
278 if (status < 0) {
279 tp->stats.tx_errors++; /* It wasn't Txed */
280 tp->tx_ring[entry].status = 0;
281 }
282
283 dma_unmap_single(&tp->pdev->dev, tp->tx_buffers[entry].mapping,
284 tp->tx_buffers[entry].skb->len,
285 DMA_TO_DEVICE);
286
287 /* Free the original skb. */
288 dev_kfree_skb_irq(tp->tx_buffers[entry].skb);
289 tp->tx_buffers[entry].skb = NULL;
290 tp->tx_buffers[entry].mapping = 0;
291 }
292 }
293
294 static void tulip_down (struct net_device *dev)
295 {
296 struct tulip_private *tp = netdev_priv(dev);
297 void __iomem *ioaddr = tp->base_addr;
298 unsigned long flags;
299
300 napi_disable(&tp->napi);
301 del_timer_sync (&tp->oom_timer);
302 spin_lock_irqsave (&tp->lock, flags);
303
304 /* Disable interrupts by clearing the interrupt mask. */
305 iowrite32 (0x00000000, ioaddr + CSR7);
306
307 /* Stop the Tx and Rx processes. */
308 tulip_stop_rxtx(tp);
309
310 /* prepare receive buffers */
311 tulip_refill_rx(dev);
312
313 /* release any unconsumed transmit buffers */
314 tulip_clean_tx_ring(tp);
315
316 if (ioread32 (ioaddr + CSR6) != 0xffffffff)
317 tp->stats.rx_missed_errors += ioread32 (ioaddr + CSR8) & 0xffff;
318
319 spin_unlock_irqrestore (&tp->lock, flags);
320 }
321
322 static void tulip_free_ring (struct net_device *dev)
323 {
324 struct tulip_private *tp = netdev_priv(dev);
325 int i;
326
327 /* Free all the skbuffs in the Rx queue. */
328 for (i = 0; i < RX_RING_SIZE; i++) {
329 struct sk_buff *skb = tp->rx_buffers[i].skb;
330 dma_addr_t mapping = tp->rx_buffers[i].mapping;
331
332 tp->rx_buffers[i].skb = NULL;
333 tp->rx_buffers[i].mapping = 0;
334
335 tp->rx_ring[i].status = 0; /* Not owned by Tulip chip. */
336 tp->rx_ring[i].length = 0;
337 /* An invalid address. */
338 tp->rx_ring[i].buffer1 = cpu_to_le32(0xBADF00D0);
339 if (skb) {
340 dma_unmap_single(&tp->pdev->dev, mapping, PKT_BUF_SZ,
341 DMA_FROM_DEVICE);
342 dev_kfree_skb (skb);
343 }
344 }
345
346 for (i = 0; i < TX_RING_SIZE; i++) {
347 struct sk_buff *skb = tp->tx_buffers[i].skb;
348
349 if (skb != NULL) {
350 dma_unmap_single(&tp->pdev->dev,
351 tp->tx_buffers[i].mapping, skb->len, DMA_TO_DEVICE);
352 dev_kfree_skb (skb);
353 }
354 tp->tx_buffers[i].skb = NULL;
355 tp->tx_buffers[i].mapping = 0;
356 }
357 }
358
359 static int tulip_close (struct net_device *dev)
360 {
361 struct tulip_private *tp = netdev_priv(dev);
362 void __iomem *ioaddr = tp->base_addr;
363
364 netif_stop_queue (dev);
365
366 tulip_down (dev);
367
368 if (tulip_debug > 1)
369 dev_printk(KERN_DEBUG, &dev->dev,
370 "Shutting down ethercard, status was %02x\n",
371 ioread32 (ioaddr + CSR5));
372
373 free_irq (dev->irq, dev);
374
375 tulip_free_ring (dev);
376
377 return 0;
378 }
379
380 static struct net_device_stats *tulip_get_stats(struct net_device *dev)
381 {
382 struct tulip_private *tp = netdev_priv(dev);
383 void __iomem *ioaddr = tp->base_addr;
384
385 if (netif_running(dev)) {
386 unsigned long flags;
387
388 spin_lock_irqsave (&tp->lock, flags);
389
390 tp->stats.rx_missed_errors += ioread32(ioaddr + CSR8) & 0xffff;
391
392 spin_unlock_irqrestore(&tp->lock, flags);
393 }
394
395 return &tp->stats;
396 }
397
398
399 static void tulip_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
400 {
401 strcpy(info->driver, DRV_NAME);
402 strcpy(info->version, DRV_VERSION);
403 strcpy(info->bus_info, "mmio");
404 }
405
406 static const struct ethtool_ops ops = {
407 .get_drvinfo = tulip_get_drvinfo
408 };
409
410 static void set_rx_mode(struct net_device *dev)
411 {
412 struct tulip_private *tp = netdev_priv(dev);
413 void __iomem *ioaddr = tp->base_addr;
414 int csr6;
415
416 csr6 = ioread32(ioaddr + CSR6) & ~0x00D5;
417
418 tp->csr6 &= ~0x00D5;
419 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
420 tp->csr6 |= AcceptAllMulticast | AcceptAllPhys;
421 csr6 |= AcceptAllMulticast | AcceptAllPhys;
422 } else if ((netdev_mc_count(dev) > 1000) ||
423 (dev->flags & IFF_ALLMULTI)) {
424 /* Too many to filter well -- accept all multicasts. */
425 tp->csr6 |= AcceptAllMulticast;
426 csr6 |= AcceptAllMulticast;
427 } else {
428 /* Some work-alikes have only a 64-entry hash filter table. */
429 /* Should verify correctness on big-endian/__powerpc__ */
430 struct netdev_hw_addr *ha;
431 if (netdev_mc_count(dev) > 64) {
432 /* Arbitrary non-effective limit. */
433 tp->csr6 |= AcceptAllMulticast;
434 csr6 |= AcceptAllMulticast;
435 } else {
436 u32 mc_filter[2] = {0, 0}; /* Multicast hash filter */
437 int filterbit;
438 netdev_for_each_mc_addr(ha, dev) {
439 filterbit = ether_crc_le(ETH_ALEN, ha->addr);
440 filterbit &= 0x3f;
441 mc_filter[filterbit >> 5] |= 1 << (filterbit & 31);
442 if (tulip_debug > 2)
443 dev_info(&dev->dev,
444 "Added filter for %pM %08x bit %d\n",
445 ha->addr,
446 ether_crc(ETH_ALEN, ha->addr),
447 filterbit);
448 }
449 if (mc_filter[0] == tp->mc_filter[0] &&
450 mc_filter[1] == tp->mc_filter[1])
451 ; /* No change. */
452 iowrite32(mc_filter[0], ioaddr + CSR27);
453 iowrite32(mc_filter[1], ioaddr + CSR28);
454 tp->mc_filter[0] = mc_filter[0];
455 tp->mc_filter[1] = mc_filter[1];
456 }
457 }
458
459 if (dev->irq == ADM8668_LAN_IRQ)
460 csr6 |= (1 << 9); /* force 100Mbps full duplex */
461 // csr6 |= 1; /* pad 2 bytes. vlan? */
462
463 iowrite32(csr6, ioaddr + CSR6);
464 }
465
466 static const struct net_device_ops tulip_netdev_ops = {
467 .ndo_open = tulip_open,
468 .ndo_start_xmit = tulip_start_xmit,
469 .ndo_tx_timeout = tulip_tx_timeout,
470 .ndo_stop = tulip_close,
471 .ndo_get_stats = tulip_get_stats,
472 .ndo_set_multicast_list = set_rx_mode,
473 .ndo_change_mtu = eth_change_mtu,
474 .ndo_set_mac_address = eth_mac_addr,
475 .ndo_validate_addr = eth_validate_addr,
476 #ifdef CONFIG_NET_POLL_CONTROLLER
477 .ndo_poll_controller = poll_tulip,
478 #endif
479 };
480
481 static int __devinit adm8668net_probe(struct platform_device *pdev)
482 {
483 struct tulip_private *tp;
484 struct net_device *dev;
485 struct resource *res;
486 void __iomem *ioaddr;
487 int irq;
488
489 if (pdev->id < 0 || pdev->id >= MAX_UNITS)
490 return -EINVAL;
491
492 if (!(res = platform_get_resource(pdev, IORESOURCE_IRQ, 0)))
493 return -ENODEV;
494 irq = res->start;
495 if (!(res = platform_get_resource(pdev, IORESOURCE_MEM, 0)))
496 return -ENODEV;
497 if (!(ioaddr = ioremap(res->start, res->end - res->start)))
498 return -ENODEV;
499 if (!(dev = alloc_etherdev(sizeof (*tp))))
500 return -ENOMEM;
501
502 /* setup net dev */
503 dev->base_addr = (unsigned long)res->start;
504 dev->irq = irq;
505 SET_NETDEV_DEV(dev, &pdev->dev);
506
507 /* tulip private struct */
508 tp = netdev_priv(dev);
509 tp->dev = dev;
510 tp->base_addr = ioaddr;
511 tp->csr0 = csr0;
512 tp->rx_ring = dma_alloc_coherent(&pdev->dev,
513 sizeof(struct tulip_rx_desc) * RX_RING_SIZE +
514 sizeof(struct tulip_tx_desc) * TX_RING_SIZE,
515 &tp->rx_ring_dma, GFP_KERNEL);
516 if (!tp->rx_ring)
517 return -ENODEV;
518 tp->tx_ring = (struct tulip_tx_desc *)(tp->rx_ring + RX_RING_SIZE);
519 tp->tx_ring_dma = tp->rx_ring_dma + sizeof(struct tulip_rx_desc) * RX_RING_SIZE;
520
521 spin_lock_init(&tp->lock);
522
523 /* Stop the chip's Tx and Rx processes. */
524 tulip_stop_rxtx(tp);
525
526 /* Clear the missed-packet counter. */
527 ioread32(ioaddr + CSR8);
528
529 /* Addresses are stored in BSP area of NOR flash */
530 if (irq == ADM8668_WAN_IRQ)
531 memcpy(dev->dev_addr, (char *)ADM8668_WAN_MACADDR, 6);
532 else
533 memcpy(dev->dev_addr, (char *)ADM8668_LAN_MACADDR, 6);
534
535 /* The Tulip-specific entries in the device structure. */
536 dev->netdev_ops = &tulip_netdev_ops;
537 dev->watchdog_timeo = TX_TIMEOUT;
538 netif_napi_add(dev, &tp->napi, tulip_poll, 16);
539 SET_ETHTOOL_OPS(dev, &ops);
540
541 if (register_netdev(dev))
542 goto err_out_free_ring;
543
544 dev_info(&dev->dev,
545 "ADM8668net at MMIO %#lx %pM, IRQ %d\n",
546 (unsigned long)dev->base_addr, dev->dev_addr, irq);
547
548 platform_set_drvdata(pdev, dev);
549 return 0;
550
551 err_out_free_ring:
552 dma_free_coherent(&pdev->dev,
553 sizeof (struct tulip_rx_desc) * RX_RING_SIZE +
554 sizeof (struct tulip_tx_desc) * TX_RING_SIZE,
555 tp->rx_ring, tp->rx_ring_dma);
556 return -ENODEV;
557 }
558
559 static int __devexit adm8668net_remove(struct platform_device *pdev)
560 {
561 struct net_device *dev = platform_get_drvdata (pdev);
562 struct tulip_private *tp;
563
564 if (!dev)
565 return -ENODEV;
566
567 tp = netdev_priv(dev);
568 unregister_netdev(dev);
569 dma_free_coherent(&pdev->dev,
570 sizeof (struct tulip_rx_desc) * RX_RING_SIZE +
571 sizeof (struct tulip_tx_desc) * TX_RING_SIZE,
572 tp->rx_ring, tp->rx_ring_dma);
573 iounmap(tp->base_addr);
574 free_netdev(dev);
575 platform_set_drvdata(pdev, NULL);
576 return 0;
577 }
578
579 #ifdef CONFIG_NET_POLL_CONTROLLER
580 /*
581 * Polling 'interrupt' - used by things like netconsole to send skbs
582 * without having to re-enable interrupts. It's not called while
583 * the interrupt routine is executing.
584 */
585
586 static void poll_tulip (struct net_device *dev)
587 {
588 /* disable_irq here is not very nice, but with the lockless
589 interrupt handler we have no other choice. */
590 disable_irq(dev->irq);
591 tulip_interrupt(dev->irq, dev);
592 enable_irq(dev->irq);
593 }
594 #endif
595
596 static struct platform_driver adm8668net_platform_driver = {
597 .probe = adm8668net_probe,
598 .remove = __devexit_p(adm8668net_remove),
599 .driver = {
600 .owner = THIS_MODULE,
601 .name = "adm8668_eth"
602 },
603 };
604
605 static int __init adm8668net_init(void)
606 {
607 pr_info("%s", version);
608 return platform_driver_register(&adm8668net_platform_driver);
609 }
610
611 static void __exit adm8668net_exit(void)
612 {
613 platform_driver_unregister(&adm8668net_platform_driver);
614 }
615
616 module_init(adm8668net_init);
617 module_exit(adm8668net_exit);
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