?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
USB: lh7a40x_udc remove double declaration
[firewire-audio.git] / drivers / usb / gadget / lh7a40x_udc.c
blob4a991564a03ee5758515f99e01683a64116ddeeb
1 /*
2 * linux/drivers/usb/gadget/lh7a40x_udc.c
3 * Sharp LH7A40x on-chip full speed USB device controllers
4 *
5 * Copyright (C) 2004 Mikko Lahteenmaki, Nordic ID
6 * Copyright (C) 2004 Bo Henriksen, Nordic ID
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 #include <linux/platform_device.h>
25
26 #include "lh7a40x_udc.h"
27
28 //#define DEBUG printk
29 //#define DEBUG_EP0 printk
30 //#define DEBUG_SETUP printk
31
32 #ifndef DEBUG_EP0
33 # define DEBUG_EP0(fmt,args...)
34 #endif
35 #ifndef DEBUG_SETUP
36 # define DEBUG_SETUP(fmt,args...)
37 #endif
38 #ifndef DEBUG
39 # define NO_STATES
40 # define DEBUG(fmt,args...)
41 #endif
42
43 #define DRIVER_DESC "LH7A40x USB Device Controller"
44 #define DRIVER_VERSION __DATE__
45
46 #ifndef _BIT /* FIXME - what happended to _BIT in 2.6.7bk18? */
47 #define _BIT(x) (1<<(x))
48 #endif
49
50 struct lh7a40x_udc *the_controller;
51
52 static const char driver_name[] = "lh7a40x_udc";
53 static const char driver_desc[] = DRIVER_DESC;
54 static const char ep0name[] = "ep0-control";
55
56 /*
57 Local definintions.
58 */
59
60 #ifndef NO_STATES
61 static char *state_names[] = {
62 "WAIT_FOR_SETUP",
63 "DATA_STATE_XMIT",
64 "DATA_STATE_NEED_ZLP",
65 "WAIT_FOR_OUT_STATUS",
66 "DATA_STATE_RECV"
67 };
68 #endif
69
70 /*
71 Local declarations.
72 */
73 static int lh7a40x_ep_enable(struct usb_ep *ep,
74 const struct usb_endpoint_descriptor *);
75 static int lh7a40x_ep_disable(struct usb_ep *ep);
76 static struct usb_request *lh7a40x_alloc_request(struct usb_ep *ep, gfp_t);
77 static void lh7a40x_free_request(struct usb_ep *ep, struct usb_request *);
78 static void *lh7a40x_alloc_buffer(struct usb_ep *ep, unsigned, dma_addr_t *,
79 gfp_t);
80 static void lh7a40x_free_buffer(struct usb_ep *ep, void *, dma_addr_t,
81 unsigned);
82 static int lh7a40x_queue(struct usb_ep *ep, struct usb_request *, gfp_t);
83 static int lh7a40x_dequeue(struct usb_ep *ep, struct usb_request *);
84 static int lh7a40x_set_halt(struct usb_ep *ep, int);
85 static int lh7a40x_fifo_status(struct usb_ep *ep);
86 static void lh7a40x_fifo_flush(struct usb_ep *ep);
87 static void lh7a40x_ep0_kick(struct lh7a40x_udc *dev, struct lh7a40x_ep *ep);
88 static void lh7a40x_handle_ep0(struct lh7a40x_udc *dev, u32 intr);
89
90 static void done(struct lh7a40x_ep *ep, struct lh7a40x_request *req,
91 int status);
92 static void pio_irq_enable(int bEndpointAddress);
93 static void pio_irq_disable(int bEndpointAddress);
94 static void stop_activity(struct lh7a40x_udc *dev,
95 struct usb_gadget_driver *driver);
96 static void flush(struct lh7a40x_ep *ep);
97 static void udc_enable(struct lh7a40x_udc *dev);
98 static void udc_set_address(struct lh7a40x_udc *dev, unsigned char address);
99
100 static struct usb_ep_ops lh7a40x_ep_ops = {
101 .enable = lh7a40x_ep_enable,
102 .disable = lh7a40x_ep_disable,
103
104 .alloc_request = lh7a40x_alloc_request,
105 .free_request = lh7a40x_free_request,
106
107 .alloc_buffer = lh7a40x_alloc_buffer,
108 .free_buffer = lh7a40x_free_buffer,
109
110 .queue = lh7a40x_queue,
111 .dequeue = lh7a40x_dequeue,
112
113 .set_halt = lh7a40x_set_halt,
114 .fifo_status = lh7a40x_fifo_status,
115 .fifo_flush = lh7a40x_fifo_flush,
116 };
117
118 /* Inline code */
119
120 static __inline__ int write_packet(struct lh7a40x_ep *ep,
121 struct lh7a40x_request *req, int max)
122 {
123 u8 *buf;
124 int length, count;
125 volatile u32 *fifo = (volatile u32 *)ep->fifo;
126
127 buf = req->req.buf + req->req.actual;
128 prefetch(buf);
129
130 length = req->req.length - req->req.actual;
131 length = min(length, max);
132 req->req.actual += length;
133
134 DEBUG("Write %d (max %d), fifo %p\n", length, max, fifo);
135
136 count = length;
137 while (count--) {
138 *fifo = *buf++;
139 }
140
141 return length;
142 }
143
144 static __inline__ void usb_set_index(u32 ep)
145 {
146 *(volatile u32 *)io_p2v(USB_INDEX) = ep;
147 }
148
149 static __inline__ u32 usb_read(u32 port)
150 {
151 return *(volatile u32 *)io_p2v(port);
152 }
153
154 static __inline__ void usb_write(u32 val, u32 port)
155 {
156 *(volatile u32 *)io_p2v(port) = val;
157 }
158
159 static __inline__ void usb_set(u32 val, u32 port)
160 {
161 volatile u32 *ioport = (volatile u32 *)io_p2v(port);
162 u32 after = (*ioport) | val;
163 *ioport = after;
164 }
165
166 static __inline__ void usb_clear(u32 val, u32 port)
167 {
168 volatile u32 *ioport = (volatile u32 *)io_p2v(port);
169 u32 after = (*ioport) & ~val;
170 *ioport = after;
171 }
172
173 /*-------------------------------------------------------------------------*/
174
175 #define GPIO_PORTC_DR (0x80000E08)
176 #define GPIO_PORTC_DDR (0x80000E18)
177 #define GPIO_PORTC_PDR (0x80000E70)
178
179 /* get port C pin data register */
180 #define get_portc_pdr(bit) ((usb_read(GPIO_PORTC_PDR) & _BIT(bit)) != 0)
181 /* get port C data direction register */
182 #define get_portc_ddr(bit) ((usb_read(GPIO_PORTC_DDR) & _BIT(bit)) != 0)
183 /* set port C data register */
184 #define set_portc_dr(bit, val) (val ? usb_set(_BIT(bit), GPIO_PORTC_DR) : usb_clear(_BIT(bit), GPIO_PORTC_DR))
185 /* set port C data direction register */
186 #define set_portc_ddr(bit, val) (val ? usb_set(_BIT(bit), GPIO_PORTC_DDR) : usb_clear(_BIT(bit), GPIO_PORTC_DDR))
187
188 /*
189 * LPD7A404 GPIO's:
190 * Port C bit 1 = USB Port 1 Power Enable
191 * Port C bit 2 = USB Port 1 Data Carrier Detect
192 */
193 #define is_usb_connected() get_portc_pdr(2)
194
195 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
196
197 static const char proc_node_name[] = "driver/udc";
198
199 static int
200 udc_proc_read(char *page, char **start, off_t off, int count,
201 int *eof, void *_dev)
202 {
203 char *buf = page;
204 struct lh7a40x_udc *dev = _dev;
205 char *next = buf;
206 unsigned size = count;
207 unsigned long flags;
208 int t;
209
210 if (off != 0)
211 return 0;
212
213 local_irq_save(flags);
214
215 /* basic device status */
216 t = scnprintf(next, size,
217 DRIVER_DESC "\n"
218 "%s version: %s\n"
219 "Gadget driver: %s\n"
220 "Host: %s\n\n",
221 driver_name, DRIVER_VERSION,
222 dev->driver ? dev->driver->driver.name : "(none)",
223 is_usb_connected()? "full speed" : "disconnected");
224 size -= t;
225 next += t;
226
227 t = scnprintf(next, size,
228 "GPIO:\n"
229 " Port C bit 1: %d, dir %d\n"
230 " Port C bit 2: %d, dir %d\n\n",
231 get_portc_pdr(1), get_portc_ddr(1),
232 get_portc_pdr(2), get_portc_ddr(2)
233 );
234 size -= t;
235 next += t;
236
237 t = scnprintf(next, size,
238 "DCP pullup: %d\n\n",
239 (usb_read(USB_PM) & PM_USB_DCP) != 0);
240 size -= t;
241 next += t;
242
243 local_irq_restore(flags);
244 *eof = 1;
245 return count - size;
246 }
247
248 #define create_proc_files() create_proc_read_entry(proc_node_name, 0, NULL, udc_proc_read, dev)
249 #define remove_proc_files() remove_proc_entry(proc_node_name, NULL)
250
251 #else /* !CONFIG_USB_GADGET_DEBUG_FILES */
252
253 #define create_proc_files() do {} while (0)
254 #define remove_proc_files() do {} while (0)
255
256 #endif /* CONFIG_USB_GADGET_DEBUG_FILES */
257
258 /*
259 * udc_disable - disable USB device controller
260 */
261 static void udc_disable(struct lh7a40x_udc *dev)
262 {
263 DEBUG("%s, %p\n", __FUNCTION__, dev);
264
265 udc_set_address(dev, 0);
266
267 /* Disable interrupts */
268 usb_write(0, USB_IN_INT_EN);
269 usb_write(0, USB_OUT_INT_EN);
270 usb_write(0, USB_INT_EN);
271
272 /* Disable the USB */
273 usb_write(0, USB_PM);
274
275 #ifdef CONFIG_ARCH_LH7A404
276 /* Disable USB power */
277 set_portc_dr(1, 0);
278 #endif
279
280 /* if hardware supports it, disconnect from usb */
281 /* make_usb_disappear(); */
282
283 dev->ep0state = WAIT_FOR_SETUP;
284 dev->gadget.speed = USB_SPEED_UNKNOWN;
285 dev->usb_address = 0;
286 }
287
288 /*
289 * udc_reinit - initialize software state
290 */
291 static void udc_reinit(struct lh7a40x_udc *dev)
292 {
293 u32 i;
294
295 DEBUG("%s, %p\n", __FUNCTION__, dev);
296
297 /* device/ep0 records init */
298 INIT_LIST_HEAD(&dev->gadget.ep_list);
299 INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
300 dev->ep0state = WAIT_FOR_SETUP;
301
302 /* basic endpoint records init */
303 for (i = 0; i < UDC_MAX_ENDPOINTS; i++) {
304 struct lh7a40x_ep *ep = &dev->ep[i];
305
306 if (i != 0)
307 list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
308
309 ep->desc = 0;
310 ep->stopped = 0;
311 INIT_LIST_HEAD(&ep->queue);
312 ep->pio_irqs = 0;
313 }
314
315 /* the rest was statically initialized, and is read-only */
316 }
317
318 #define BYTES2MAXP(x) (x / 8)
319 #define MAXP2BYTES(x) (x * 8)
320
321 /* until it's enabled, this UDC should be completely invisible
322 * to any USB host.
323 */
324 static void udc_enable(struct lh7a40x_udc *dev)
325 {
326 int ep;
327
328 DEBUG("%s, %p\n", __FUNCTION__, dev);
329
330 dev->gadget.speed = USB_SPEED_UNKNOWN;
331
332 #ifdef CONFIG_ARCH_LH7A404
333 /* Set Port C bit 1 & 2 as output */
334 set_portc_ddr(1, 1);
335 set_portc_ddr(2, 1);
336
337 /* Enable USB power */
338 set_portc_dr(1, 0);
339 #endif
340
341 /*
342 * C.f Chapter 18.1.3.1 Initializing the USB
343 */
344
345 /* Disable the USB */
346 usb_clear(PM_USB_ENABLE, USB_PM);
347
348 /* Reset APB & I/O sides of the USB */
349 usb_set(USB_RESET_APB | USB_RESET_IO, USB_RESET);
350 mdelay(5);
351 usb_clear(USB_RESET_APB | USB_RESET_IO, USB_RESET);
352
353 /* Set MAXP values for each */
354 for (ep = 0; ep < UDC_MAX_ENDPOINTS; ep++) {
355 struct lh7a40x_ep *ep_reg = &dev->ep[ep];
356 u32 csr;
357
358 usb_set_index(ep);
359
360 switch (ep_reg->ep_type) {
361 case ep_bulk_in:
362 case ep_interrupt:
363 usb_clear(USB_IN_CSR2_USB_DMA_EN | USB_IN_CSR2_AUTO_SET,
364 ep_reg->csr2);
365 /* Fall through */
366 case ep_control:
367 usb_write(BYTES2MAXP(ep_maxpacket(ep_reg)),
368 USB_IN_MAXP);
369 break;
370 case ep_bulk_out:
371 usb_clear(USB_OUT_CSR2_USB_DMA_EN |
372 USB_OUT_CSR2_AUTO_CLR, ep_reg->csr2);
373 usb_write(BYTES2MAXP(ep_maxpacket(ep_reg)),
374 USB_OUT_MAXP);
375 break;
376 }
377
378 /* Read & Write CSR1, just in case */
379 csr = usb_read(ep_reg->csr1);
380 usb_write(csr, ep_reg->csr1);
381
382 flush(ep_reg);
383 }
384
385 /* Disable interrupts */
386 usb_write(0, USB_IN_INT_EN);
387 usb_write(0, USB_OUT_INT_EN);
388 usb_write(0, USB_INT_EN);
389
390 /* Enable interrupts */
391 usb_set(USB_IN_INT_EP0, USB_IN_INT_EN);
392 usb_set(USB_INT_RESET_INT | USB_INT_RESUME_INT, USB_INT_EN);
393 /* Dont enable rest of the interrupts */
394 /* usb_set(USB_IN_INT_EP3 | USB_IN_INT_EP1 | USB_IN_INT_EP0, USB_IN_INT_EN);
395 usb_set(USB_OUT_INT_EP2, USB_OUT_INT_EN); */
396
397 /* Enable SUSPEND */
398 usb_set(PM_ENABLE_SUSPEND, USB_PM);
399
400 /* Enable the USB */
401 usb_set(PM_USB_ENABLE, USB_PM);
402
403 #ifdef CONFIG_ARCH_LH7A404
404 /* NOTE: DOES NOT WORK! */
405 /* Let host detect UDC:
406 * Software must write a 0 to the PMR:DCP_CTRL bit to turn this
407 * transistor on and pull the USBDP pin HIGH.
408 */
409 /* usb_clear(PM_USB_DCP, USB_PM);
410 usb_set(PM_USB_DCP, USB_PM); */
411 #endif
412 }
413
414 /*
415 Register entry point for the peripheral controller driver.
416 */
417 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
418 {
419 struct lh7a40x_udc *dev = the_controller;
420 int retval;
421
422 DEBUG("%s: %s\n", __FUNCTION__, driver->driver.name);
423
424 if (!driver
425 || driver->speed != USB_SPEED_FULL
426 || !driver->bind
427 || !driver->unbind || !driver->disconnect || !driver->setup)
428 return -EINVAL;
429 if (!dev)
430 return -ENODEV;
431 if (dev->driver)
432 return -EBUSY;
433
434 /* first hook up the driver ... */
435 dev->driver = driver;
436 dev->gadget.dev.driver = &driver->driver;
437
438 device_add(&dev->gadget.dev);
439 retval = driver->bind(&dev->gadget);
440 if (retval) {
441 printk("%s: bind to driver %s --> error %d\n", dev->gadget.name,
442 driver->driver.name, retval);
443 device_del(&dev->gadget.dev);
444
445 dev->driver = 0;
446 dev->gadget.dev.driver = 0;
447 return retval;
448 }
449
450 /* ... then enable host detection and ep0; and we're ready
451 * for set_configuration as well as eventual disconnect.
452 * NOTE: this shouldn't power up until later.
453 */
454 printk("%s: registered gadget driver '%s'\n", dev->gadget.name,
455 driver->driver.name);
456
457 udc_enable(dev);
458
459 return 0;
460 }
461
462 EXPORT_SYMBOL(usb_gadget_register_driver);
463
464 /*
465 Unregister entry point for the peripheral controller driver.
466 */
467 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
468 {
469 struct lh7a40x_udc *dev = the_controller;
470 unsigned long flags;
471
472 if (!dev)
473 return -ENODEV;
474 if (!driver || driver != dev->driver)
475 return -EINVAL;
476
477 spin_lock_irqsave(&dev->lock, flags);
478 dev->driver = 0;
479 stop_activity(dev, driver);
480 spin_unlock_irqrestore(&dev->lock, flags);
481
482 driver->unbind(&dev->gadget);
483 device_del(&dev->gadget.dev);
484
485 udc_disable(dev);
486
487 DEBUG("unregistered gadget driver '%s'\n", driver->driver.name);
488 return 0;
489 }
490
491 EXPORT_SYMBOL(usb_gadget_unregister_driver);
492
493 /*-------------------------------------------------------------------------*/
494
495 /** Write request to FIFO (max write == maxp size)
496 * Return: 0 = still running, 1 = completed, negative = errno
497 * NOTE: INDEX register must be set for EP
498 */
499 static int write_fifo(struct lh7a40x_ep *ep, struct lh7a40x_request *req)
500 {
501 u32 max;
502 u32 csr;
503
504 max = le16_to_cpu(ep->desc->wMaxPacketSize);
505
506 csr = usb_read(ep->csr1);
507 DEBUG("CSR: %x %d\n", csr, csr & USB_IN_CSR1_FIFO_NOT_EMPTY);
508
509 if (!(csr & USB_IN_CSR1_FIFO_NOT_EMPTY)) {
510 unsigned count;
511 int is_last, is_short;
512
513 count = write_packet(ep, req, max);
514 usb_set(USB_IN_CSR1_IN_PKT_RDY, ep->csr1);
515
516 /* last packet is usually short (or a zlp) */
517 if (unlikely(count != max))
518 is_last = is_short = 1;
519 else {
520 if (likely(req->req.length != req->req.actual)
521 || req->req.zero)
522 is_last = 0;
523 else
524 is_last = 1;
525 /* interrupt/iso maxpacket may not fill the fifo */
526 is_short = unlikely(max < ep_maxpacket(ep));
527 }
528
529 DEBUG("%s: wrote %s %d bytes%s%s %d left %p\n", __FUNCTION__,
530 ep->ep.name, count,
531 is_last ? "/L" : "", is_short ? "/S" : "",
532 req->req.length - req->req.actual, req);
533
534 /* requests complete when all IN data is in the FIFO */
535 if (is_last) {
536 done(ep, req, 0);
537 if (list_empty(&ep->queue)) {
538 pio_irq_disable(ep_index(ep));
539 }
540 return 1;
541 }
542 } else {
543 DEBUG("Hmm.. %d ep FIFO is not empty!\n", ep_index(ep));
544 }
545
546 return 0;
547 }
548
549 /** Read to request from FIFO (max read == bytes in fifo)
550 * Return: 0 = still running, 1 = completed, negative = errno
551 * NOTE: INDEX register must be set for EP
552 */
553 static int read_fifo(struct lh7a40x_ep *ep, struct lh7a40x_request *req)
554 {
555 u32 csr;
556 u8 *buf;
557 unsigned bufferspace, count, is_short;
558 volatile u32 *fifo = (volatile u32 *)ep->fifo;
559
560 /* make sure there's a packet in the FIFO. */
561 csr = usb_read(ep->csr1);
562 if (!(csr & USB_OUT_CSR1_OUT_PKT_RDY)) {
563 DEBUG("%s: Packet NOT ready!\n", __FUNCTION__);
564 return -EINVAL;
565 }
566
567 buf = req->req.buf + req->req.actual;
568 prefetchw(buf);
569 bufferspace = req->req.length - req->req.actual;
570
571 /* read all bytes from this packet */
572 count = usb_read(USB_OUT_FIFO_WC1);
573 req->req.actual += min(count, bufferspace);
574
575 is_short = (count < ep->ep.maxpacket);
576 DEBUG("read %s %02x, %d bytes%s req %p %d/%d\n",
577 ep->ep.name, csr, count,
578 is_short ? "/S" : "", req, req->req.actual, req->req.length);
579
580 while (likely(count-- != 0)) {
581 u8 byte = (u8) (*fifo & 0xff);
582
583 if (unlikely(bufferspace == 0)) {
584 /* this happens when the driver's buffer
585 * is smaller than what the host sent.
586 * discard the extra data.
587 */
588 if (req->req.status != -EOVERFLOW)
589 printk("%s overflow %d\n", ep->ep.name, count);
590 req->req.status = -EOVERFLOW;
591 } else {
592 *buf++ = byte;
593 bufferspace--;
594 }
595 }
596
597 usb_clear(USB_OUT_CSR1_OUT_PKT_RDY, ep->csr1);
598
599 /* completion */
600 if (is_short || req->req.actual == req->req.length) {
601 done(ep, req, 0);
602 usb_set(USB_OUT_CSR1_FIFO_FLUSH, ep->csr1);
603
604 if (list_empty(&ep->queue))
605 pio_irq_disable(ep_index(ep));
606 return 1;
607 }
608
609 /* finished that packet. the next one may be waiting... */
610 return 0;
611 }
612
613 /*
614 * done - retire a request; caller blocked irqs
615 * INDEX register is preserved to keep same
616 */
617 static void done(struct lh7a40x_ep *ep, struct lh7a40x_request *req, int status)
618 {
619 unsigned int stopped = ep->stopped;
620 u32 index;
621
622 DEBUG("%s, %p\n", __FUNCTION__, ep);
623 list_del_init(&req->queue);
624
625 if (likely(req->req.status == -EINPROGRESS))
626 req->req.status = status;
627 else
628 status = req->req.status;
629
630 if (status && status != -ESHUTDOWN)
631 DEBUG("complete %s req %p stat %d len %u/%u\n",
632 ep->ep.name, &req->req, status,
633 req->req.actual, req->req.length);
634
635 /* don't modify queue heads during completion callback */
636 ep->stopped = 1;
637 /* Read current index (completion may modify it) */
638 index = usb_read(USB_INDEX);
639
640 spin_unlock(&ep->dev->lock);
641 req->req.complete(&ep->ep, &req->req);
642 spin_lock(&ep->dev->lock);
643
644 /* Restore index */
645 usb_set_index(index);
646 ep->stopped = stopped;
647 }
648
649 /** Enable EP interrupt */
650 static void pio_irq_enable(int ep)
651 {
652 DEBUG("%s: %d\n", __FUNCTION__, ep);
653
654 switch (ep) {
655 case 1:
656 usb_set(USB_IN_INT_EP1, USB_IN_INT_EN);
657 break;
658 case 2:
659 usb_set(USB_OUT_INT_EP2, USB_OUT_INT_EN);
660 break;
661 case 3:
662 usb_set(USB_IN_INT_EP3, USB_IN_INT_EN);
663 break;
664 default:
665 DEBUG("Unknown endpoint: %d\n", ep);
666 break;
667 }
668 }
669
670 /** Disable EP interrupt */
671 static void pio_irq_disable(int ep)
672 {
673 DEBUG("%s: %d\n", __FUNCTION__, ep);
674
675 switch (ep) {
676 case 1:
677 usb_clear(USB_IN_INT_EP1, USB_IN_INT_EN);
678 break;
679 case 2:
680 usb_clear(USB_OUT_INT_EP2, USB_OUT_INT_EN);
681 break;
682 case 3:
683 usb_clear(USB_IN_INT_EP3, USB_IN_INT_EN);
684 break;
685 default:
686 DEBUG("Unknown endpoint: %d\n", ep);
687 break;
688 }
689 }
690
691 /*
692 * nuke - dequeue ALL requests
693 */
694 void nuke(struct lh7a40x_ep *ep, int status)
695 {
696 struct lh7a40x_request *req;
697
698 DEBUG("%s, %p\n", __FUNCTION__, ep);
699
700 /* Flush FIFO */
701 flush(ep);
702
703 /* called with irqs blocked */
704 while (!list_empty(&ep->queue)) {
705 req = list_entry(ep->queue.next, struct lh7a40x_request, queue);
706 done(ep, req, status);
707 }
708
709 /* Disable IRQ if EP is enabled (has descriptor) */
710 if (ep->desc)
711 pio_irq_disable(ep_index(ep));
712 }
713
714 /*
715 void nuke_all(struct lh7a40x_udc *dev)
716 {
717 int n;
718 for(n=0; n<UDC_MAX_ENDPOINTS; n++) {
719 struct lh7a40x_ep *ep = &dev->ep[n];
720 usb_set_index(n);
721 nuke(ep, 0);
722 }
723 }*/
724
725 /*
726 static void flush_all(struct lh7a40x_udc *dev)
727 {
728 int n;
729 for (n = 0; n < UDC_MAX_ENDPOINTS; n++)
730 {
731 struct lh7a40x_ep *ep = &dev->ep[n];
732 flush(ep);
733 }
734 }
735 */
736
737 /** Flush EP
738 * NOTE: INDEX register must be set before this call
739 */
740 static void flush(struct lh7a40x_ep *ep)
741 {
742 DEBUG("%s, %p\n", __FUNCTION__, ep);
743
744 switch (ep->ep_type) {
745 case ep_control:
746 /* check, by implication c.f. 15.1.2.11 */
747 break;
748
749 case ep_bulk_in:
750 case ep_interrupt:
751 /* if(csr & USB_IN_CSR1_IN_PKT_RDY) */
752 usb_set(USB_IN_CSR1_FIFO_FLUSH, ep->csr1);
753 break;
754
755 case ep_bulk_out:
756 /* if(csr & USB_OUT_CSR1_OUT_PKT_RDY) */
757 usb_set(USB_OUT_CSR1_FIFO_FLUSH, ep->csr1);
758 break;
759 }
760 }
761
762 /**
763 * lh7a40x_in_epn - handle IN interrupt
764 */
765 static void lh7a40x_in_epn(struct lh7a40x_udc *dev, u32 ep_idx, u32 intr)
766 {
767 u32 csr;
768 struct lh7a40x_ep *ep = &dev->ep[ep_idx];
769 struct lh7a40x_request *req;
770
771 usb_set_index(ep_idx);
772
773 csr = usb_read(ep->csr1);
774 DEBUG("%s: %d, csr %x\n", __FUNCTION__, ep_idx, csr);
775
776 if (csr & USB_IN_CSR1_SENT_STALL) {
777 DEBUG("USB_IN_CSR1_SENT_STALL\n");
778 usb_set(USB_IN_CSR1_SENT_STALL /*|USB_IN_CSR1_SEND_STALL */ ,
779 ep->csr1);
780 return;
781 }
782
783 if (!ep->desc) {
784 DEBUG("%s: NO EP DESC\n", __FUNCTION__);
785 return;
786 }
787
788 if (list_empty(&ep->queue))
789 req = 0;
790 else
791 req = list_entry(ep->queue.next, struct lh7a40x_request, queue);
792
793 DEBUG("req: %p\n", req);
794
795 if (!req)
796 return;
797
798 write_fifo(ep, req);
799 }
800
801 /* ********************************************************************************************* */
802 /* Bulk OUT (recv)
803 */
804
805 static void lh7a40x_out_epn(struct lh7a40x_udc *dev, u32 ep_idx, u32 intr)
806 {
807 struct lh7a40x_ep *ep = &dev->ep[ep_idx];
808 struct lh7a40x_request *req;
809
810 DEBUG("%s: %d\n", __FUNCTION__, ep_idx);
811
812 usb_set_index(ep_idx);
813
814 if (ep->desc) {
815 u32 csr;
816 csr = usb_read(ep->csr1);
817
818 while ((csr =
819 usb_read(ep->
820 csr1)) & (USB_OUT_CSR1_OUT_PKT_RDY |
821 USB_OUT_CSR1_SENT_STALL)) {
822 DEBUG("%s: %x\n", __FUNCTION__, csr);
823
824 if (csr & USB_OUT_CSR1_SENT_STALL) {
825 DEBUG("%s: stall sent, flush fifo\n",
826 __FUNCTION__);
827 /* usb_set(USB_OUT_CSR1_FIFO_FLUSH, ep->csr1); */
828 flush(ep);
829 } else if (csr & USB_OUT_CSR1_OUT_PKT_RDY) {
830 if (list_empty(&ep->queue))
831 req = 0;
832 else
833 req =
834 list_entry(ep->queue.next,
835 struct lh7a40x_request,
836 queue);
837
838 if (!req) {
839 printk("%s: NULL REQ %d\n",
840 __FUNCTION__, ep_idx);
841 flush(ep);
842 break;
843 } else {
844 read_fifo(ep, req);
845 }
846 }
847
848 }
849
850 } else {
851 /* Throw packet away.. */
852 printk("%s: No descriptor?!?\n", __FUNCTION__);
853 flush(ep);
854 }
855 }
856
857 static void stop_activity(struct lh7a40x_udc *dev,
858 struct usb_gadget_driver *driver)
859 {
860 int i;
861
862 /* don't disconnect drivers more than once */
863 if (dev->gadget.speed == USB_SPEED_UNKNOWN)
864 driver = 0;
865 dev->gadget.speed = USB_SPEED_UNKNOWN;
866
867 /* prevent new request submissions, kill any outstanding requests */
868 for (i = 0; i < UDC_MAX_ENDPOINTS; i++) {
869 struct lh7a40x_ep *ep = &dev->ep[i];
870 ep->stopped = 1;
871
872 usb_set_index(i);
873 nuke(ep, -ESHUTDOWN);
874 }
875
876 /* report disconnect; the driver is already quiesced */
877 if (driver) {
878 spin_unlock(&dev->lock);
879 driver->disconnect(&dev->gadget);
880 spin_lock(&dev->lock);
881 }
882
883 /* re-init driver-visible data structures */
884 udc_reinit(dev);
885 }
886
887 /** Handle USB RESET interrupt
888 */
889 static void lh7a40x_reset_intr(struct lh7a40x_udc *dev)
890 {
891 #if 0 /* def CONFIG_ARCH_LH7A404 */
892 /* Does not work always... */
893
894 DEBUG("%s: %d\n", __FUNCTION__, dev->usb_address);
895
896 if (!dev->usb_address) {
897 /*usb_set(USB_RESET_IO, USB_RESET);
898 mdelay(5);
899 usb_clear(USB_RESET_IO, USB_RESET); */
900 return;
901 }
902 /* Put the USB controller into reset. */
903 usb_set(USB_RESET_IO, USB_RESET);
904
905 /* Set Device ID to 0 */
906 udc_set_address(dev, 0);
907
908 /* Let PLL2 settle down */
909 mdelay(5);
910
911 /* Release the USB controller from reset */
912 usb_clear(USB_RESET_IO, USB_RESET);
913
914 /* Re-enable UDC */
915 udc_enable(dev);
916
917 #endif
918 dev->gadget.speed = USB_SPEED_FULL;
919 }
920
921 /*
922 * lh7a40x usb client interrupt handler.
923 */
924 static irqreturn_t lh7a40x_udc_irq(int irq, void *_dev)
925 {
926 struct lh7a40x_udc *dev = _dev;
927
928 DEBUG("\n\n");
929
930 spin_lock(&dev->lock);
931
932 for (;;) {
933 u32 intr_in = usb_read(USB_IN_INT);
934 u32 intr_out = usb_read(USB_OUT_INT);
935 u32 intr_int = usb_read(USB_INT);
936
937 /* Test also against enable bits.. (lh7a40x errata).. Sigh.. */
938 u32 in_en = usb_read(USB_IN_INT_EN);
939 u32 out_en = usb_read(USB_OUT_INT_EN);
940
941 if (!intr_out && !intr_in && !intr_int)
942 break;
943
944 DEBUG("%s (on state %s)\n", __FUNCTION__,
945 state_names[dev->ep0state]);
946 DEBUG("intr_out = %x\n", intr_out);
947 DEBUG("intr_in = %x\n", intr_in);
948 DEBUG("intr_int = %x\n", intr_int);
949
950 if (intr_in) {
951 usb_write(intr_in, USB_IN_INT);
952
953 if ((intr_in & USB_IN_INT_EP1)
954 && (in_en & USB_IN_INT_EP1)) {
955 DEBUG("USB_IN_INT_EP1\n");
956 lh7a40x_in_epn(dev, 1, intr_in);
957 }
958 if ((intr_in & USB_IN_INT_EP3)
959 && (in_en & USB_IN_INT_EP3)) {
960 DEBUG("USB_IN_INT_EP3\n");
961 lh7a40x_in_epn(dev, 3, intr_in);
962 }
963 if (intr_in & USB_IN_INT_EP0) {
964 DEBUG("USB_IN_INT_EP0 (control)\n");
965 lh7a40x_handle_ep0(dev, intr_in);
966 }
967 }
968
969 if (intr_out) {
970 usb_write(intr_out, USB_OUT_INT);
971
972 if ((intr_out & USB_OUT_INT_EP2)
973 && (out_en & USB_OUT_INT_EP2)) {
974 DEBUG("USB_OUT_INT_EP2\n");
975 lh7a40x_out_epn(dev, 2, intr_out);
976 }
977 }
978
979 if (intr_int) {
980 usb_write(intr_int, USB_INT);
981
982 if (intr_int & USB_INT_RESET_INT) {
983 lh7a40x_reset_intr(dev);
984 }
985
986 if (intr_int & USB_INT_RESUME_INT) {
987 DEBUG("USB resume\n");
988
989 if (dev->gadget.speed != USB_SPEED_UNKNOWN
990 && dev->driver
991 && dev->driver->resume
992 && is_usb_connected()) {
993 dev->driver->resume(&dev->gadget);
994 }
995 }
996
997 if (intr_int & USB_INT_SUSPEND_INT) {
998 DEBUG("USB suspend%s\n",
999 is_usb_connected()? "" : "+disconnect");
1000 if (!is_usb_connected()) {
1001 stop_activity(dev, dev->driver);
1002 } else if (dev->gadget.speed !=
1003 USB_SPEED_UNKNOWN && dev->driver
1004 && dev->driver->suspend) {
1005 dev->driver->suspend(&dev->gadget);
1006 }
1007 }
1008
1009 }
1010 }
1011
1012 spin_unlock(&dev->lock);
1013
1014 return IRQ_HANDLED;
1015 }
1016
1017 static int lh7a40x_ep_enable(struct usb_ep *_ep,
1018 const struct usb_endpoint_descriptor *desc)
1019 {
1020 struct lh7a40x_ep *ep;
1021 struct lh7a40x_udc *dev;
1022 unsigned long flags;
1023
1024 DEBUG("%s, %p\n", __FUNCTION__, _ep);
1025
1026 ep = container_of(_ep, struct lh7a40x_ep, ep);
1027 if (!_ep || !desc || ep->desc || _ep->name == ep0name
1028 || desc->bDescriptorType != USB_DT_ENDPOINT
1029 || ep->bEndpointAddress != desc->bEndpointAddress
1030 || ep_maxpacket(ep) < le16_to_cpu(desc->wMaxPacketSize)) {
1031 DEBUG("%s, bad ep or descriptor\n", __FUNCTION__);
1032 return -EINVAL;
1033 }
1034
1035 /* xfer types must match, except that interrupt ~= bulk */
1036 if (ep->bmAttributes != desc->bmAttributes
1037 && ep->bmAttributes != USB_ENDPOINT_XFER_BULK
1038 && desc->bmAttributes != USB_ENDPOINT_XFER_INT) {
1039 DEBUG("%s, %s type mismatch\n", __FUNCTION__, _ep->name);
1040 return -EINVAL;
1041 }
1042
1043 /* hardware _could_ do smaller, but driver doesn't */
1044 if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
1045 && le16_to_cpu(desc->wMaxPacketSize) != ep_maxpacket(ep))
1046 || !desc->wMaxPacketSize) {
1047 DEBUG("%s, bad %s maxpacket\n", __FUNCTION__, _ep->name);
1048 return -ERANGE;
1049 }
1050
1051 dev = ep->dev;
1052 if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
1053 DEBUG("%s, bogus device state\n", __FUNCTION__);
1054 return -ESHUTDOWN;
1055 }
1056
1057 spin_lock_irqsave(&ep->dev->lock, flags);
1058
1059 ep->stopped = 0;
1060 ep->desc = desc;
1061 ep->pio_irqs = 0;
1062 ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
1063
1064 spin_unlock_irqrestore(&ep->dev->lock, flags);
1065
1066 /* Reset halt state (does flush) */
1067 lh7a40x_set_halt(_ep, 0);
1068
1069 DEBUG("%s: enabled %s\n", __FUNCTION__, _ep->name);
1070 return 0;
1071 }
1072
1073 /** Disable EP
1074 * NOTE: Sets INDEX register
1075 */
1076 static int lh7a40x_ep_disable(struct usb_ep *_ep)
1077 {
1078 struct lh7a40x_ep *ep;
1079 unsigned long flags;
1080
1081 DEBUG("%s, %p\n", __FUNCTION__, _ep);
1082
1083 ep = container_of(_ep, struct lh7a40x_ep, ep);
1084 if (!_ep || !ep->desc) {
1085 DEBUG("%s, %s not enabled\n", __FUNCTION__,
1086 _ep ? ep->ep.name : NULL);
1087 return -EINVAL;
1088 }
1089
1090 spin_lock_irqsave(&ep->dev->lock, flags);
1091
1092 usb_set_index(ep_index(ep));
1093
1094 /* Nuke all pending requests (does flush) */
1095 nuke(ep, -ESHUTDOWN);
1096
1097 /* Disable ep IRQ */
1098 pio_irq_disable(ep_index(ep));
1099
1100 ep->desc = 0;
1101 ep->stopped = 1;
1102
1103 spin_unlock_irqrestore(&ep->dev->lock, flags);
1104
1105 DEBUG("%s: disabled %s\n", __FUNCTION__, _ep->name);
1106 return 0;
1107 }
1108
1109 static struct usb_request *lh7a40x_alloc_request(struct usb_ep *ep,
1110 gfp_t gfp_flags)
1111 {
1112 struct lh7a40x_request *req;
1113
1114 DEBUG("%s, %p\n", __FUNCTION__, ep);
1115
1116 req = kzalloc(sizeof(*req), gfp_flags);
1117 if (!req)
1118 return 0;
1119
1120 INIT_LIST_HEAD(&req->queue);
1121
1122 return &req->req;
1123 }
1124
1125 static void lh7a40x_free_request(struct usb_ep *ep, struct usb_request *_req)
1126 {
1127 struct lh7a40x_request *req;
1128
1129 DEBUG("%s, %p\n", __FUNCTION__, ep);
1130
1131 req = container_of(_req, struct lh7a40x_request, req);
1132 WARN_ON(!list_empty(&req->queue));
1133 kfree(req);
1134 }
1135
1136 static void *lh7a40x_alloc_buffer(struct usb_ep *ep, unsigned bytes,
1137 dma_addr_t * dma, gfp_t gfp_flags)
1138 {
1139 char *retval;
1140
1141 DEBUG("%s (%p, %d, %d)\n", __FUNCTION__, ep, bytes, gfp_flags);
1142
1143 retval = kmalloc(bytes, gfp_flags & ~(__GFP_DMA | __GFP_HIGHMEM));
1144 if (retval)
1145 *dma = virt_to_bus(retval);
1146 return retval;
1147 }
1148
1149 static void lh7a40x_free_buffer(struct usb_ep *ep, void *buf, dma_addr_t dma,
1150 unsigned bytes)
1151 {
1152 DEBUG("%s, %p\n", __FUNCTION__, ep);
1153 kfree(buf);
1154 }
1155
1156 /** Queue one request
1157 * Kickstart transfer if needed
1158 * NOTE: Sets INDEX register
1159 */
1160 static int lh7a40x_queue(struct usb_ep *_ep, struct usb_request *_req,
1161 gfp_t gfp_flags)
1162 {
1163 struct lh7a40x_request *req;
1164 struct lh7a40x_ep *ep;
1165 struct lh7a40x_udc *dev;
1166 unsigned long flags;
1167
1168 DEBUG("\n\n\n%s, %p\n", __FUNCTION__, _ep);
1169
1170 req = container_of(_req, struct lh7a40x_request, req);
1171 if (unlikely
1172 (!_req || !_req->complete || !_req->buf
1173 || !list_empty(&req->queue))) {
1174 DEBUG("%s, bad params\n", __FUNCTION__);
1175 return -EINVAL;
1176 }
1177
1178 ep = container_of(_ep, struct lh7a40x_ep, ep);
1179 if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
1180 DEBUG("%s, bad ep\n", __FUNCTION__);
1181 return -EINVAL;
1182 }
1183
1184 dev = ep->dev;
1185 if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) {
1186 DEBUG("%s, bogus device state %p\n", __FUNCTION__, dev->driver);
1187 return -ESHUTDOWN;
1188 }
1189
1190 DEBUG("%s queue req %p, len %d buf %p\n", _ep->name, _req, _req->length,
1191 _req->buf);
1192
1193 spin_lock_irqsave(&dev->lock, flags);
1194
1195 _req->status = -EINPROGRESS;
1196 _req->actual = 0;
1197
1198 /* kickstart this i/o queue? */
1199 DEBUG("Add to %d Q %d %d\n", ep_index(ep), list_empty(&ep->queue),
1200 ep->stopped);
1201 if (list_empty(&ep->queue) && likely(!ep->stopped)) {
1202 u32 csr;
1203
1204 if (unlikely(ep_index(ep) == 0)) {
1205 /* EP0 */
1206 list_add_tail(&req->queue, &ep->queue);
1207 lh7a40x_ep0_kick(dev, ep);
1208 req = 0;
1209 } else if (ep_is_in(ep)) {
1210 /* EP1 & EP3 */
1211 usb_set_index(ep_index(ep));
1212 csr = usb_read(ep->csr1);
1213 pio_irq_enable(ep_index(ep));
1214 if ((csr & USB_IN_CSR1_FIFO_NOT_EMPTY) == 0) {
1215 if (write_fifo(ep, req) == 1)
1216 req = 0;
1217 }
1218 } else {
1219 /* EP2 */
1220 usb_set_index(ep_index(ep));
1221 csr = usb_read(ep->csr1);
1222 pio_irq_enable(ep_index(ep));
1223 if (!(csr & USB_OUT_CSR1_FIFO_FULL)) {
1224 if (read_fifo(ep, req) == 1)
1225 req = 0;
1226 }
1227 }
1228 }
1229
1230 /* pio or dma irq handler advances the queue. */
1231 if (likely(req != 0))
1232 list_add_tail(&req->queue, &ep->queue);
1233
1234 spin_unlock_irqrestore(&dev->lock, flags);
1235
1236 return 0;
1237 }
1238
1239 /* dequeue JUST ONE request */
1240 static int lh7a40x_dequeue(struct usb_ep *_ep, struct usb_request *_req)
1241 {
1242 struct lh7a40x_ep *ep;
1243 struct lh7a40x_request *req;
1244 unsigned long flags;
1245
1246 DEBUG("%s, %p\n", __FUNCTION__, _ep);
1247
1248 ep = container_of(_ep, struct lh7a40x_ep, ep);
1249 if (!_ep || ep->ep.name == ep0name)
1250 return -EINVAL;
1251
1252 spin_lock_irqsave(&ep->dev->lock, flags);
1253
1254 /* make sure it's actually queued on this endpoint */
1255 list_for_each_entry(req, &ep->queue, queue) {
1256 if (&req->req == _req)
1257 break;
1258 }
1259 if (&req->req != _req) {
1260 spin_unlock_irqrestore(&ep->dev->lock, flags);
1261 return -EINVAL;
1262 }
1263
1264 done(ep, req, -ECONNRESET);
1265
1266 spin_unlock_irqrestore(&ep->dev->lock, flags);
1267 return 0;
1268 }
1269
1270 /** Halt specific EP
1271 * Return 0 if success
1272 * NOTE: Sets INDEX register to EP !
1273 */
1274 static int lh7a40x_set_halt(struct usb_ep *_ep, int value)
1275 {
1276 struct lh7a40x_ep *ep;
1277 unsigned long flags;
1278
1279 ep = container_of(_ep, struct lh7a40x_ep, ep);
1280 if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
1281 DEBUG("%s, bad ep\n", __FUNCTION__);
1282 return -EINVAL;
1283 }
1284
1285 usb_set_index(ep_index(ep));
1286
1287 DEBUG("%s, ep %d, val %d\n", __FUNCTION__, ep_index(ep), value);
1288
1289 spin_lock_irqsave(&ep->dev->lock, flags);
1290
1291 if (ep_index(ep) == 0) {
1292 /* EP0 */
1293 usb_set(EP0_SEND_STALL, ep->csr1);
1294 } else if (ep_is_in(ep)) {
1295 u32 csr = usb_read(ep->csr1);
1296 if (value && ((csr & USB_IN_CSR1_FIFO_NOT_EMPTY)
1297 || !list_empty(&ep->queue))) {
1298 /*
1299 * Attempts to halt IN endpoints will fail (returning -EAGAIN)
1300 * if any transfer requests are still queued, or if the controller
1301 * FIFO still holds bytes that the host hasn’t collected.
1302 */
1303 spin_unlock_irqrestore(&ep->dev->lock, flags);
1304 DEBUG
1305 ("Attempt to halt IN endpoint failed (returning -EAGAIN) %d %d\n",
1306 (csr & USB_IN_CSR1_FIFO_NOT_EMPTY),
1307 !list_empty(&ep->queue));
1308 return -EAGAIN;
1309 }
1310 flush(ep);
1311 if (value)
1312 usb_set(USB_IN_CSR1_SEND_STALL, ep->csr1);
1313 else {
1314 usb_clear(USB_IN_CSR1_SEND_STALL, ep->csr1);
1315 usb_set(USB_IN_CSR1_CLR_DATA_TOGGLE, ep->csr1);
1316 }
1317
1318 } else {
1319
1320 flush(ep);
1321 if (value)
1322 usb_set(USB_OUT_CSR1_SEND_STALL, ep->csr1);
1323 else {
1324 usb_clear(USB_OUT_CSR1_SEND_STALL, ep->csr1);
1325 usb_set(USB_OUT_CSR1_CLR_DATA_REG, ep->csr1);
1326 }
1327 }
1328
1329 if (value) {
1330 ep->stopped = 1;
1331 } else {
1332 ep->stopped = 0;
1333 }
1334
1335 spin_unlock_irqrestore(&ep->dev->lock, flags);
1336
1337 DEBUG("%s %s halted\n", _ep->name, value == 0 ? "NOT" : "IS");
1338
1339 return 0;
1340 }
1341
1342 /** Return bytes in EP FIFO
1343 * NOTE: Sets INDEX register to EP
1344 */
1345 static int lh7a40x_fifo_status(struct usb_ep *_ep)
1346 {
1347 u32 csr;
1348 int count = 0;
1349 struct lh7a40x_ep *ep;
1350
1351 ep = container_of(_ep, struct lh7a40x_ep, ep);
1352 if (!_ep) {
1353 DEBUG("%s, bad ep\n", __FUNCTION__);
1354 return -ENODEV;
1355 }
1356
1357 DEBUG("%s, %d\n", __FUNCTION__, ep_index(ep));
1358
1359 /* LPD can't report unclaimed bytes from IN fifos */
1360 if (ep_is_in(ep))
1361 return -EOPNOTSUPP;
1362
1363 usb_set_index(ep_index(ep));
1364
1365 csr = usb_read(ep->csr1);
1366 if (ep->dev->gadget.speed != USB_SPEED_UNKNOWN ||
1367 csr & USB_OUT_CSR1_OUT_PKT_RDY) {
1368 count = usb_read(USB_OUT_FIFO_WC1);
1369 }
1370
1371 return count;
1372 }
1373
1374 /** Flush EP FIFO
1375 * NOTE: Sets INDEX register to EP
1376 */
1377 static void lh7a40x_fifo_flush(struct usb_ep *_ep)
1378 {
1379 struct lh7a40x_ep *ep;
1380
1381 ep = container_of(_ep, struct lh7a40x_ep, ep);
1382 if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
1383 DEBUG("%s, bad ep\n", __FUNCTION__);
1384 return;
1385 }
1386
1387 usb_set_index(ep_index(ep));
1388 flush(ep);
1389 }
1390
1391 /****************************************************************/
1392 /* End Point 0 related functions */
1393 /****************************************************************/
1394
1395 /* return: 0 = still running, 1 = completed, negative = errno */
1396 static int write_fifo_ep0(struct lh7a40x_ep *ep, struct lh7a40x_request *req)
1397 {
1398 u32 max;
1399 unsigned count;
1400 int is_last;
1401
1402 max = ep_maxpacket(ep);
1403
1404 DEBUG_EP0("%s\n", __FUNCTION__);
1405
1406 count = write_packet(ep, req, max);
1407
1408 /* last packet is usually short (or a zlp) */
1409 if (unlikely(count != max))
1410 is_last = 1;
1411 else {
1412 if (likely(req->req.length != req->req.actual) || req->req.zero)
1413 is_last = 0;
1414 else
1415 is_last = 1;
1416 }
1417
1418 DEBUG_EP0("%s: wrote %s %d bytes%s %d left %p\n", __FUNCTION__,
1419 ep->ep.name, count,
1420 is_last ? "/L" : "", req->req.length - req->req.actual, req);
1421
1422 /* requests complete when all IN data is in the FIFO */
1423 if (is_last) {
1424 done(ep, req, 0);
1425 return 1;
1426 }
1427
1428 return 0;
1429 }
1430
1431 static __inline__ int lh7a40x_fifo_read(struct lh7a40x_ep *ep,
1432 unsigned char *cp, int max)
1433 {
1434 int bytes;
1435 int count = usb_read(USB_OUT_FIFO_WC1);
1436 volatile u32 *fifo = (volatile u32 *)ep->fifo;
1437
1438 if (count > max)
1439 count = max;
1440 bytes = count;
1441 while (count--)
1442 *cp++ = *fifo & 0xFF;
1443 return bytes;
1444 }
1445
1446 static __inline__ void lh7a40x_fifo_write(struct lh7a40x_ep *ep,
1447 unsigned char *cp, int count)
1448 {
1449 volatile u32 *fifo = (volatile u32 *)ep->fifo;
1450 DEBUG_EP0("fifo_write: %d %d\n", ep_index(ep), count);
1451 while (count--)
1452 *fifo = *cp++;
1453 }
1454
1455 static int read_fifo_ep0(struct lh7a40x_ep *ep, struct lh7a40x_request *req)
1456 {
1457 u32 csr;
1458 u8 *buf;
1459 unsigned bufferspace, count, is_short;
1460 volatile u32 *fifo = (volatile u32 *)ep->fifo;
1461
1462 DEBUG_EP0("%s\n", __FUNCTION__);
1463
1464 csr = usb_read(USB_EP0_CSR);
1465 if (!(csr & USB_OUT_CSR1_OUT_PKT_RDY))
1466 return 0;
1467
1468 buf = req->req.buf + req->req.actual;
1469 prefetchw(buf);
1470 bufferspace = req->req.length - req->req.actual;
1471
1472 /* read all bytes from this packet */
1473 if (likely(csr & EP0_OUT_PKT_RDY)) {
1474 count = usb_read(USB_OUT_FIFO_WC1);
1475 req->req.actual += min(count, bufferspace);
1476 } else /* zlp */
1477 count = 0;
1478
1479 is_short = (count < ep->ep.maxpacket);
1480 DEBUG_EP0("read %s %02x, %d bytes%s req %p %d/%d\n",
1481 ep->ep.name, csr, count,
1482 is_short ? "/S" : "", req, req->req.actual, req->req.length);
1483
1484 while (likely(count-- != 0)) {
1485 u8 byte = (u8) (*fifo & 0xff);
1486
1487 if (unlikely(bufferspace == 0)) {
1488 /* this happens when the driver's buffer
1489 * is smaller than what the host sent.
1490 * discard the extra data.
1491 */
1492 if (req->req.status != -EOVERFLOW)
1493 DEBUG_EP0("%s overflow %d\n", ep->ep.name,
1494 count);
1495 req->req.status = -EOVERFLOW;
1496 } else {
1497 *buf++ = byte;
1498 bufferspace--;
1499 }
1500 }
1501
1502 /* completion */
1503 if (is_short || req->req.actual == req->req.length) {
1504 done(ep, req, 0);
1505 return 1;
1506 }
1507
1508 /* finished that packet. the next one may be waiting... */
1509 return 0;
1510 }
1511
1512 /**
1513 * udc_set_address - set the USB address for this device
1514 * @address:
1515 *
1516 * Called from control endpoint function after it decodes a set address setup packet.
1517 */
1518 static void udc_set_address(struct lh7a40x_udc *dev, unsigned char address)
1519 {
1520 DEBUG_EP0("%s: %d\n", __FUNCTION__, address);
1521 /* c.f. 15.1.2.2 Table 15-4 address will be used after DATA_END is set */
1522 dev->usb_address = address;
1523 usb_set((address & USB_FA_FUNCTION_ADDR), USB_FA);
1524 usb_set(USB_FA_ADDR_UPDATE | (address & USB_FA_FUNCTION_ADDR), USB_FA);
1525 /* usb_read(USB_FA); */
1526 }
1527
1528 /*
1529 * DATA_STATE_RECV (OUT_PKT_RDY)
1530 * - if error
1531 * set EP0_CLR_OUT | EP0_DATA_END | EP0_SEND_STALL bits
1532 * - else
1533 * set EP0_CLR_OUT bit
1534 if last set EP0_DATA_END bit
1535 */
1536 static void lh7a40x_ep0_out(struct lh7a40x_udc *dev, u32 csr)
1537 {
1538 struct lh7a40x_request *req;
1539 struct lh7a40x_ep *ep = &dev->ep[0];
1540 int ret;
1541
1542 DEBUG_EP0("%s: %x\n", __FUNCTION__, csr);
1543
1544 if (list_empty(&ep->queue))
1545 req = 0;
1546 else
1547 req = list_entry(ep->queue.next, struct lh7a40x_request, queue);
1548
1549 if (req) {
1550
1551 if (req->req.length == 0) {
1552 DEBUG_EP0("ZERO LENGTH OUT!\n");
1553 usb_set((EP0_CLR_OUT | EP0_DATA_END), USB_EP0_CSR);
1554 dev->ep0state = WAIT_FOR_SETUP;
1555 return;
1556 }
1557 ret = read_fifo_ep0(ep, req);
1558 if (ret) {
1559 /* Done! */
1560 DEBUG_EP0("%s: finished, waiting for status\n",
1561 __FUNCTION__);
1562
1563 usb_set((EP0_CLR_OUT | EP0_DATA_END), USB_EP0_CSR);
1564 dev->ep0state = WAIT_FOR_SETUP;
1565 } else {
1566 /* Not done yet.. */
1567 DEBUG_EP0("%s: not finished\n", __FUNCTION__);
1568 usb_set(EP0_CLR_OUT, USB_EP0_CSR);
1569 }
1570 } else {
1571 DEBUG_EP0("NO REQ??!\n");
1572 }
1573 }
1574
1575 /*
1576 * DATA_STATE_XMIT
1577 */
1578 static int lh7a40x_ep0_in(struct lh7a40x_udc *dev, u32 csr)
1579 {
1580 struct lh7a40x_request *req;
1581 struct lh7a40x_ep *ep = &dev->ep[0];
1582 int ret, need_zlp = 0;
1583
1584 DEBUG_EP0("%s: %x\n", __FUNCTION__, csr);
1585
1586 if (list_empty(&ep->queue))
1587 req = 0;
1588 else
1589 req = list_entry(ep->queue.next, struct lh7a40x_request, queue);
1590
1591 if (!req) {
1592 DEBUG_EP0("%s: NULL REQ\n", __FUNCTION__);
1593 return 0;
1594 }
1595
1596 if (req->req.length == 0) {
1597
1598 usb_set((EP0_IN_PKT_RDY | EP0_DATA_END), USB_EP0_CSR);
1599 dev->ep0state = WAIT_FOR_SETUP;
1600 return 1;
1601 }
1602
1603 if (req->req.length - req->req.actual == EP0_PACKETSIZE) {
1604 /* Next write will end with the packet size, */
1605 /* so we need Zero-length-packet */
1606 need_zlp = 1;
1607 }
1608
1609 ret = write_fifo_ep0(ep, req);
1610
1611 if (ret == 1 && !need_zlp) {
1612 /* Last packet */
1613 DEBUG_EP0("%s: finished, waiting for status\n", __FUNCTION__);
1614
1615 usb_set((EP0_IN_PKT_RDY | EP0_DATA_END), USB_EP0_CSR);
1616 dev->ep0state = WAIT_FOR_SETUP;
1617 } else {
1618 DEBUG_EP0("%s: not finished\n", __FUNCTION__);
1619 usb_set(EP0_IN_PKT_RDY, USB_EP0_CSR);
1620 }
1621
1622 if (need_zlp) {
1623 DEBUG_EP0("%s: Need ZLP!\n", __FUNCTION__);
1624 usb_set(EP0_IN_PKT_RDY, USB_EP0_CSR);
1625 dev->ep0state = DATA_STATE_NEED_ZLP;
1626 }
1627
1628 return 1;
1629 }
1630
1631 static int lh7a40x_handle_get_status(struct lh7a40x_udc *dev,
1632 struct usb_ctrlrequest *ctrl)
1633 {
1634 struct lh7a40x_ep *ep0 = &dev->ep[0];
1635 struct lh7a40x_ep *qep;
1636 int reqtype = (ctrl->bRequestType & USB_RECIP_MASK);
1637 u16 val = 0;
1638
1639 if (reqtype == USB_RECIP_INTERFACE) {
1640 /* This is not supported.
1641 * And according to the USB spec, this one does nothing..
1642 * Just return 0
1643 */
1644 DEBUG_SETUP("GET_STATUS: USB_RECIP_INTERFACE\n");
1645 } else if (reqtype == USB_RECIP_DEVICE) {
1646 DEBUG_SETUP("GET_STATUS: USB_RECIP_DEVICE\n");
1647 val |= (1 << 0); /* Self powered */
1648 /*val |= (1<<1); *//* Remote wakeup */
1649 } else if (reqtype == USB_RECIP_ENDPOINT) {
1650 int ep_num = (ctrl->wIndex & ~USB_DIR_IN);
1651
1652 DEBUG_SETUP
1653 ("GET_STATUS: USB_RECIP_ENDPOINT (%d), ctrl->wLength = %d\n",
1654 ep_num, ctrl->wLength);
1655
1656 if (ctrl->wLength > 2 || ep_num > 3)
1657 return -EOPNOTSUPP;
1658
1659 qep = &dev->ep[ep_num];
1660 if (ep_is_in(qep) != ((ctrl->wIndex & USB_DIR_IN) ? 1 : 0)
1661 && ep_index(qep) != 0) {
1662 return -EOPNOTSUPP;
1663 }
1664
1665 usb_set_index(ep_index(qep));
1666
1667 /* Return status on next IN token */
1668 switch (qep->ep_type) {
1669 case ep_control:
1670 val =
1671 (usb_read(qep->csr1) & EP0_SEND_STALL) ==
1672 EP0_SEND_STALL;
1673 break;
1674 case ep_bulk_in:
1675 case ep_interrupt:
1676 val =
1677 (usb_read(qep->csr1) & USB_IN_CSR1_SEND_STALL) ==
1678 USB_IN_CSR1_SEND_STALL;
1679 break;
1680 case ep_bulk_out:
1681 val =
1682 (usb_read(qep->csr1) & USB_OUT_CSR1_SEND_STALL) ==
1683 USB_OUT_CSR1_SEND_STALL;
1684 break;
1685 }
1686
1687 /* Back to EP0 index */
1688 usb_set_index(0);
1689
1690 DEBUG_SETUP("GET_STATUS, ep: %d (%x), val = %d\n", ep_num,
1691 ctrl->wIndex, val);
1692 } else {
1693 DEBUG_SETUP("Unknown REQ TYPE: %d\n", reqtype);
1694 return -EOPNOTSUPP;
1695 }
1696
1697 /* Clear "out packet ready" */
1698 usb_set((EP0_CLR_OUT), USB_EP0_CSR);
1699 /* Put status to FIFO */
1700 lh7a40x_fifo_write(ep0, (u8 *) & val, sizeof(val));
1701 /* Issue "In packet ready" */
1702 usb_set((EP0_IN_PKT_RDY | EP0_DATA_END), USB_EP0_CSR);
1703
1704 return 0;
1705 }
1706
1707 /*
1708 * WAIT_FOR_SETUP (OUT_PKT_RDY)
1709 * - read data packet from EP0 FIFO
1710 * - decode command
1711 * - if error
1712 * set EP0_CLR_OUT | EP0_DATA_END | EP0_SEND_STALL bits
1713 * - else
1714 * set EP0_CLR_OUT | EP0_DATA_END bits
1715 */
1716 static void lh7a40x_ep0_setup(struct lh7a40x_udc *dev, u32 csr)
1717 {
1718 struct lh7a40x_ep *ep = &dev->ep[0];
1719 struct usb_ctrlrequest ctrl;
1720 int i, bytes, is_in;
1721
1722 DEBUG_SETUP("%s: %x\n", __FUNCTION__, csr);
1723
1724 /* Nuke all previous transfers */
1725 nuke(ep, -EPROTO);
1726
1727 /* read control req from fifo (8 bytes) */
1728 bytes = lh7a40x_fifo_read(ep, (unsigned char *)&ctrl, 8);
1729
1730 DEBUG_SETUP("Read CTRL REQ %d bytes\n", bytes);
1731 DEBUG_SETUP("CTRL.bRequestType = %d (is_in %d)\n", ctrl.bRequestType,
1732 ctrl.bRequestType == USB_DIR_IN);
1733 DEBUG_SETUP("CTRL.bRequest = %d\n", ctrl.bRequest);
1734 DEBUG_SETUP("CTRL.wLength = %d\n", ctrl.wLength);
1735 DEBUG_SETUP("CTRL.wValue = %d (%d)\n", ctrl.wValue, ctrl.wValue >> 8);
1736 DEBUG_SETUP("CTRL.wIndex = %d\n", ctrl.wIndex);
1737
1738 /* Set direction of EP0 */
1739 if (likely(ctrl.bRequestType & USB_DIR_IN)) {
1740 ep->bEndpointAddress |= USB_DIR_IN;
1741 is_in = 1;
1742 } else {
1743 ep->bEndpointAddress &= ~USB_DIR_IN;
1744 is_in = 0;
1745 }
1746
1747 dev->req_pending = 1;
1748
1749 /* Handle some SETUP packets ourselves */
1750 switch (ctrl.bRequest) {
1751 case USB_REQ_SET_ADDRESS:
1752 if (ctrl.bRequestType != (USB_TYPE_STANDARD | USB_RECIP_DEVICE))
1753 break;
1754
1755 DEBUG_SETUP("USB_REQ_SET_ADDRESS (%d)\n", ctrl.wValue);
1756 udc_set_address(dev, ctrl.wValue);
1757 usb_set((EP0_CLR_OUT | EP0_DATA_END), USB_EP0_CSR);
1758 return;
1759
1760 case USB_REQ_GET_STATUS:{
1761 if (lh7a40x_handle_get_status(dev, &ctrl) == 0)
1762 return;
1763
1764 case USB_REQ_CLEAR_FEATURE:
1765 case USB_REQ_SET_FEATURE:
1766 if (ctrl.bRequestType == USB_RECIP_ENDPOINT) {
1767 struct lh7a40x_ep *qep;
1768 int ep_num = (ctrl.wIndex & 0x0f);
1769
1770 /* Support only HALT feature */
1771 if (ctrl.wValue != 0 || ctrl.wLength != 0
1772 || ep_num > 3 || ep_num < 1)
1773 break;
1774
1775 qep = &dev->ep[ep_num];
1776 spin_unlock(&dev->lock);
1777 if (ctrl.bRequest == USB_REQ_SET_FEATURE) {
1778 DEBUG_SETUP("SET_FEATURE (%d)\n",
1779 ep_num);
1780 lh7a40x_set_halt(&qep->ep, 1);
1781 } else {
1782 DEBUG_SETUP("CLR_FEATURE (%d)\n",
1783 ep_num);
1784 lh7a40x_set_halt(&qep->ep, 0);
1785 }
1786 spin_lock(&dev->lock);
1787 usb_set_index(0);
1788
1789 /* Reply with a ZLP on next IN token */
1790 usb_set((EP0_CLR_OUT | EP0_DATA_END),
1791 USB_EP0_CSR);
1792 return;
1793 }
1794 break;
1795 }
1796
1797 default:
1798 break;
1799 }
1800
1801 if (likely(dev->driver)) {
1802 /* device-2-host (IN) or no data setup command, process immediately */
1803 spin_unlock(&dev->lock);
1804 i = dev->driver->setup(&dev->gadget, &ctrl);
1805 spin_lock(&dev->lock);
1806
1807 if (i < 0) {
1808 /* setup processing failed, force stall */
1809 DEBUG_SETUP
1810 (" --> ERROR: gadget setup FAILED (stalling), setup returned %d\n",
1811 i);
1812 usb_set_index(0);
1813 usb_set((EP0_CLR_OUT | EP0_DATA_END | EP0_SEND_STALL),
1814 USB_EP0_CSR);
1815
1816 /* ep->stopped = 1; */
1817 dev->ep0state = WAIT_FOR_SETUP;
1818 }
1819 }
1820 }
1821
1822 /*
1823 * DATA_STATE_NEED_ZLP
1824 */
1825 static void lh7a40x_ep0_in_zlp(struct lh7a40x_udc *dev, u32 csr)
1826 {
1827 DEBUG_EP0("%s: %x\n", __FUNCTION__, csr);
1828
1829 /* c.f. Table 15-14 */
1830 usb_set((EP0_IN_PKT_RDY | EP0_DATA_END), USB_EP0_CSR);
1831 dev->ep0state = WAIT_FOR_SETUP;
1832 }
1833
1834 /*
1835 * handle ep0 interrupt
1836 */
1837 static void lh7a40x_handle_ep0(struct lh7a40x_udc *dev, u32 intr)
1838 {
1839 struct lh7a40x_ep *ep = &dev->ep[0];
1840 u32 csr;
1841
1842 /* Set index 0 */
1843 usb_set_index(0);
1844 csr = usb_read(USB_EP0_CSR);
1845
1846 DEBUG_EP0("%s: csr = %x\n", __FUNCTION__, csr);
1847
1848 /*
1849 * For overview of what we should be doing see c.f. Chapter 18.1.2.4
1850 * We will follow that outline here modified by our own global state
1851 * indication which provides hints as to what we think should be
1852 * happening..
1853 */
1854
1855 /*
1856 * if SENT_STALL is set
1857 * - clear the SENT_STALL bit
1858 */
1859 if (csr & EP0_SENT_STALL) {
1860 DEBUG_EP0("%s: EP0_SENT_STALL is set: %x\n", __FUNCTION__, csr);
1861 usb_clear((EP0_SENT_STALL | EP0_SEND_STALL), USB_EP0_CSR);
1862 nuke(ep, -ECONNABORTED);
1863 dev->ep0state = WAIT_FOR_SETUP;
1864 return;
1865 }
1866
1867 /*
1868 * if a transfer is in progress && IN_PKT_RDY and OUT_PKT_RDY are clear
1869 * - fill EP0 FIFO
1870 * - if last packet
1871 * - set IN_PKT_RDY | DATA_END
1872 * - else
1873 * set IN_PKT_RDY
1874 */
1875 if (!(csr & (EP0_IN_PKT_RDY | EP0_OUT_PKT_RDY))) {
1876 DEBUG_EP0("%s: IN_PKT_RDY and OUT_PKT_RDY are clear\n",
1877 __FUNCTION__);
1878
1879 switch (dev->ep0state) {
1880 case DATA_STATE_XMIT:
1881 DEBUG_EP0("continue with DATA_STATE_XMIT\n");
1882 lh7a40x_ep0_in(dev, csr);
1883 return;
1884 case DATA_STATE_NEED_ZLP:
1885 DEBUG_EP0("continue with DATA_STATE_NEED_ZLP\n");
1886 lh7a40x_ep0_in_zlp(dev, csr);
1887 return;
1888 default:
1889 /* Stall? */
1890 DEBUG_EP0("Odd state!! state = %s\n",
1891 state_names[dev->ep0state]);
1892 dev->ep0state = WAIT_FOR_SETUP;
1893 /* nuke(ep, 0); */
1894 /* usb_set(EP0_SEND_STALL, ep->csr1); */
1895 break;
1896 }
1897 }
1898
1899 /*
1900 * if SETUP_END is set
1901 * - abort the last transfer
1902 * - set SERVICED_SETUP_END_BIT
1903 */
1904 if (csr & EP0_SETUP_END) {
1905 DEBUG_EP0("%s: EP0_SETUP_END is set: %x\n", __FUNCTION__, csr);
1906
1907 usb_set(EP0_CLR_SETUP_END, USB_EP0_CSR);
1908
1909 nuke(ep, 0);
1910 dev->ep0state = WAIT_FOR_SETUP;
1911 }
1912
1913 /*
1914 * if EP0_OUT_PKT_RDY is set
1915 * - read data packet from EP0 FIFO
1916 * - decode command
1917 * - if error
1918 * set SERVICED_OUT_PKT_RDY | DATA_END bits | SEND_STALL
1919 * - else
1920 * set SERVICED_OUT_PKT_RDY | DATA_END bits
1921 */
1922 if (csr & EP0_OUT_PKT_RDY) {
1923
1924 DEBUG_EP0("%s: EP0_OUT_PKT_RDY is set: %x\n", __FUNCTION__,
1925 csr);
1926
1927 switch (dev->ep0state) {
1928 case WAIT_FOR_SETUP:
1929 DEBUG_EP0("WAIT_FOR_SETUP\n");
1930 lh7a40x_ep0_setup(dev, csr);
1931 break;
1932
1933 case DATA_STATE_RECV:
1934 DEBUG_EP0("DATA_STATE_RECV\n");
1935 lh7a40x_ep0_out(dev, csr);
1936 break;
1937
1938 default:
1939 /* send stall? */
1940 DEBUG_EP0("strange state!! 2. send stall? state = %d\n",
1941 dev->ep0state);
1942 break;
1943 }
1944 }
1945 }
1946
1947 static void lh7a40x_ep0_kick(struct lh7a40x_udc *dev, struct lh7a40x_ep *ep)
1948 {
1949 u32 csr;
1950
1951 usb_set_index(0);
1952 csr = usb_read(USB_EP0_CSR);
1953
1954 DEBUG_EP0("%s: %x\n", __FUNCTION__, csr);
1955
1956 /* Clear "out packet ready" */
1957 usb_set(EP0_CLR_OUT, USB_EP0_CSR);
1958
1959 if (ep_is_in(ep)) {
1960 dev->ep0state = DATA_STATE_XMIT;
1961 lh7a40x_ep0_in(dev, csr);
1962 } else {
1963 dev->ep0state = DATA_STATE_RECV;
1964 lh7a40x_ep0_out(dev, csr);
1965 }
1966 }
1967
1968 /* ---------------------------------------------------------------------------
1969 * device-scoped parts of the api to the usb controller hardware
1970 * ---------------------------------------------------------------------------
1971 */
1972
1973 static int lh7a40x_udc_get_frame(struct usb_gadget *_gadget)
1974 {
1975 u32 frame1 = usb_read(USB_FRM_NUM1); /* Least significant 8 bits */
1976 u32 frame2 = usb_read(USB_FRM_NUM2); /* Most significant 3 bits */
1977 DEBUG("%s, %p\n", __FUNCTION__, _gadget);
1978 return ((frame2 & 0x07) << 8) | (frame1 & 0xff);
1979 }
1980
1981 static int lh7a40x_udc_wakeup(struct usb_gadget *_gadget)
1982 {
1983 /* host may not have enabled remote wakeup */
1984 /*if ((UDCCS0 & UDCCS0_DRWF) == 0)
1985 return -EHOSTUNREACH;
1986 udc_set_mask_UDCCR(UDCCR_RSM); */
1987 return -ENOTSUPP;
1988 }
1989
1990 static const struct usb_gadget_ops lh7a40x_udc_ops = {
1991 .get_frame = lh7a40x_udc_get_frame,
1992 .wakeup = lh7a40x_udc_wakeup,
1993 /* current versions must always be self-powered */
1994 };
1995
1996 static void nop_release(struct device *dev)
1997 {
1998 DEBUG("%s %s\n", __FUNCTION__, dev->bus_id);
1999 }
2000
2001 static struct lh7a40x_udc memory = {
2002 .usb_address = 0,
2003
2004 .gadget = {
2005 .ops = &lh7a40x_udc_ops,
2006 .ep0 = &memory.ep[0].ep,
2007 .name = driver_name,
2008 .dev = {
2009 .bus_id = "gadget",
2010 .release = nop_release,
2011 },
2012 },
2013
2014 /* control endpoint */
2015 .ep[0] = {
2016 .ep = {
2017 .name = ep0name,
2018 .ops = &lh7a40x_ep_ops,
2019 .maxpacket = EP0_PACKETSIZE,
2020 },
2021 .dev = &memory,
2022
2023 .bEndpointAddress = 0,
2024 .bmAttributes = 0,
2025
2026 .ep_type = ep_control,
2027 .fifo = io_p2v(USB_EP0_FIFO),
2028 .csr1 = USB_EP0_CSR,
2029 .csr2 = USB_EP0_CSR,
2030 },
2031
2032 /* first group of endpoints */
2033 .ep[1] = {
2034 .ep = {
2035 .name = "ep1in-bulk",
2036 .ops = &lh7a40x_ep_ops,
2037 .maxpacket = 64,
2038 },
2039 .dev = &memory,
2040
2041 .bEndpointAddress = USB_DIR_IN | 1,
2042 .bmAttributes = USB_ENDPOINT_XFER_BULK,
2043
2044 .ep_type = ep_bulk_in,
2045 .fifo = io_p2v(USB_EP1_FIFO),
2046 .csr1 = USB_IN_CSR1,
2047 .csr2 = USB_IN_CSR2,
2048 },
2049
2050 .ep[2] = {
2051 .ep = {
2052 .name = "ep2out-bulk",
2053 .ops = &lh7a40x_ep_ops,
2054 .maxpacket = 64,
2055 },
2056 .dev = &memory,
2057
2058 .bEndpointAddress = 2,
2059 .bmAttributes = USB_ENDPOINT_XFER_BULK,
2060
2061 .ep_type = ep_bulk_out,
2062 .fifo = io_p2v(USB_EP2_FIFO),
2063 .csr1 = USB_OUT_CSR1,
2064 .csr2 = USB_OUT_CSR2,
2065 },
2066
2067 .ep[3] = {
2068 .ep = {
2069 .name = "ep3in-int",
2070 .ops = &lh7a40x_ep_ops,
2071 .maxpacket = 64,
2072 },
2073 .dev = &memory,
2074
2075 .bEndpointAddress = USB_DIR_IN | 3,
2076 .bmAttributes = USB_ENDPOINT_XFER_INT,
2077
2078 .ep_type = ep_interrupt,
2079 .fifo = io_p2v(USB_EP3_FIFO),
2080 .csr1 = USB_IN_CSR1,
2081 .csr2 = USB_IN_CSR2,
2082 },
2083 };
2084
2085 /*
2086 * probe - binds to the platform device
2087 */
2088 static int lh7a40x_udc_probe(struct platform_device *pdev)
2089 {
2090 struct lh7a40x_udc *dev = &memory;
2091 int retval;
2092
2093 DEBUG("%s: %p\n", __FUNCTION__, pdev);
2094
2095 spin_lock_init(&dev->lock);
2096 dev->dev = &pdev->dev;
2097
2098 device_initialize(&dev->gadget.dev);
2099 dev->gadget.dev.parent = &pdev->dev;
2100
2101 the_controller = dev;
2102 platform_set_drvdata(pdev, dev);
2103
2104 udc_disable(dev);
2105 udc_reinit(dev);
2106
2107 /* irq setup after old hardware state is cleaned up */
2108 retval =
2109 request_irq(IRQ_USBINTR, lh7a40x_udc_irq, IRQF_DISABLED, driver_name,
2110 dev);
2111 if (retval != 0) {
2112 DEBUG(KERN_ERR "%s: can't get irq %i, err %d\n", driver_name,
2113 IRQ_USBINTR, retval);
2114 return -EBUSY;
2115 }
2116
2117 create_proc_files();
2118
2119 return retval;
2120 }
2121
2122 static int lh7a40x_udc_remove(struct platform_device *pdev)
2123 {
2124 struct lh7a40x_udc *dev = platform_get_drvdata(pdev);
2125
2126 DEBUG("%s: %p\n", __FUNCTION__, pdev);
2127
2128 udc_disable(dev);
2129 remove_proc_files();
2130 usb_gadget_unregister_driver(dev->driver);
2131
2132 free_irq(IRQ_USBINTR, dev);
2133
2134 platform_set_drvdata(pdev, 0);
2135
2136 the_controller = 0;
2137
2138 return 0;
2139 }
2140
2141 /*-------------------------------------------------------------------------*/
2142
2143 static struct platform_driver udc_driver = {
2144 .probe = lh7a40x_udc_probe,
2145 .remove = lh7a40x_udc_remove,
2146 /* FIXME power management support */
2147 /* .suspend = ... disable UDC */
2148 /* .resume = ... re-enable UDC */
2149 .driver = {
2150 .name = (char *)driver_name,
2151 .owner = THIS_MODULE,
2152 },
2153 };
2154
2155 static int __init udc_init(void)
2156 {
2157 DEBUG("%s: %s version %s\n", __FUNCTION__, driver_name, DRIVER_VERSION);
2158 return platform_driver_register(&udc_driver);
2159 }
2160
2161 static void __exit udc_exit(void)
2162 {
2163 platform_driver_unregister(&udc_driver);
2164 }
2165
2166 module_init(udc_init);
2167 module_exit(udc_exit);
2168
2169 MODULE_DESCRIPTION(DRIVER_DESC);
2170 MODULE_AUTHOR("Mikko Lahteenmaki, Bo Henriksen");
2171 MODULE_LICENSE("GPL");
AMDTP streaming driver for the Linux FireWire stack (Juju)