1 /*
2 * PXA27x USB device driver for u-boot.
3 *
4 * Copyright (C) 2007 Rodolfo Giometti <giometti@linux.it>
5 * Copyright (C) 2007 Eurotech S.p.A. <info@eurotech.it>
6 * Copyright (C) 2008 Vivek Kutal <vivek.kutal@azingo.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (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,
21 * MA 02111-1307 USA
22 *
23 */
24
25
26 #include <common.h>
27 #include <config.h>
28 #include <asm/byteorder.h>
29 #include <usbdcore.h>
30 #include <usbdcore_ep0.h>
31 #include <asm/arch/hardware.h>
32 #include <usb/pxa27x_udc.h>
33
34 /* number of endpoints on this UDC */
35 #define UDC_MAX_ENDPOINTS 24
36
37 static struct urb *ep0_urb;
38 static struct usb_device_instance *udc_device;
39 static int ep0state = EP0_IDLE;
40
41 #ifdef USBDDBG
udc_dump_buffer(char * name,u8 * buf,int len)42 static void udc_dump_buffer(char *name, u8 *buf, int len)
43 {
44 usbdbg("%s - buf %p, len %d", name, buf, len);
45 print_buffer(0, buf, 1, len, 0);
46 }
47 #else
48 #define udc_dump_buffer(name, buf, len) /* void */
49 #endif
50
udc_ack_int_UDCCR(int mask)51 static inline void udc_ack_int_UDCCR(int mask)
52 {
53 USIR1 = mask | USIR1;
54 }
55
56 /*
57 * If the endpoint has an active tx_urb, then the next packet of data from the
58 * URB is written to the tx FIFO.
59 * The total amount of data in the urb is given by urb->actual_length.
60 * The maximum amount of data that can be sent in any one packet is given by
61 * endpoint->tx_packetSize.
62 * The number of data bytes from this URB that have already been transmitted
63 * is given by endpoint->sent.
64 * endpoint->last is updated by this routine with the number of data bytes
65 * transmitted in this packet.
66 */
udc_write_urb(struct usb_endpoint_instance * endpoint)67 static int udc_write_urb(struct usb_endpoint_instance *endpoint)
68 {
69 struct urb *urb = endpoint->tx_urb;
70 int ep_num = endpoint->endpoint_address & USB_ENDPOINT_NUMBER_MASK;
71 u32 *addr32 = (u32 *) &UDCDN(ep_num);
72 u32 *data32 = (u32 *) urb->buffer;
73 u8 *addr8 = (u8 *) &UDCDN(ep_num);
74 u8 *data8 = (u8 *) urb->buffer;
75 unsigned int i, n, w, b, is_short;
76 int timeout = 2000; /* 2ms */
77
78 if (!urb || !urb->actual_length)
79 return -1;
80
81 n = MIN(urb->actual_length - endpoint->sent, endpoint->tx_packetSize);
82 if (n <= 0)
83 return -1;
84
85 usbdbg("write urb on ep %d", ep_num);
86 #if defined(USBDDBG) && defined(USBDPARANOIA)
87 usbdbg("urb: buf %p, buf_len %d, actual_len %d",
88 urb->buffer, urb->buffer_length, urb->actual_length);
89 usbdbg("endpoint: sent %d, tx_packetSize %d, last %d",
90 endpoint->sent, endpoint->tx_packetSize, endpoint->last);
91 #endif
92
93 is_short = n != endpoint->tx_packetSize;
94 w = n / 4;
95 b = n % 4;
96 usbdbg("n %d%s w %d b %d", n, is_short ? "-s" : "", w, b);
97 udc_dump_buffer("urb write", data8 + endpoint->sent, n);
98
99 /* Prepare for data send */
100 if (ep_num)
101 UDCCSN(ep_num) = UDCCSR_PC;
102
103 for (i = 0; i < w; i++)
104 *addr32 = data32[endpoint->sent/4 + i];
105 for (i = 0; i < b; i++)
106 *addr8 = data8[endpoint->sent + w*4 + i];
107
108 /* Set "Packet Complete" if less data then tx_packetSize */
109 if (is_short)
110 UDCCSN(ep_num) = ep_num ? UDCCSR_SP : UDCCSR0_IPR;
111
112 /* Wait for data sent */
113 while (!(UDCCSN(ep_num) & (ep_num ? UDCCSR_PC : UDCCSR0_IPR))) {
114 if (ep_num) {
115 if (timeout-- == 0)
116 return -1;
117 else
118 udelay(1);
119 };
120 }
121 endpoint->last = n;
122
123 if (ep_num) {
124 usbd_tx_complete(endpoint);
125 } else {
126 endpoint->sent += n;
127 endpoint->last -= n;
128 }
129
130 if ((endpoint->tx_urb->actual_length - endpoint->sent) <= 0) {
131 urb->actual_length = 0;
132 endpoint->sent = 0;
133 endpoint->last = 0;
134 }
135
136 if ((endpoint->sent >= urb->actual_length) && (!ep_num)) {
137 usbdbg("ep0 IN stage done");
138 if (is_short)
139 ep0state = EP0_IDLE;
140 else
141 ep0state = EP0_XFER_COMPLETE;
142 }
143
144 return 0;
145 }
146
udc_read_urb(struct usb_endpoint_instance * endpoint)147 static int udc_read_urb(struct usb_endpoint_instance *endpoint)
148 {
149 struct urb *urb = endpoint->rcv_urb;
150 int ep_num = endpoint->endpoint_address & USB_ENDPOINT_NUMBER_MASK;
151 u32 *addr32 = (u32 *) &UDCDN(ep_num);
152 u32 *data32 = (u32 *) urb->buffer;
153 unsigned int i, n, is_short ;
154
155 usbdbg("read urb on ep %d", ep_num);
156 #if defined(USBDDBG) && defined(USBDPARANOIA)
157 usbdbg("urb: buf %p, buf_len %d, actual_len %d",
158 urb->buffer, urb->buffer_length, urb->actual_length);
159 usbdbg("endpoint: rcv_packetSize %d",
160 endpoint->rcv_packetSize);
161 #endif
162
163 if (UDCCSN(ep_num) & UDCCSR_BNE)
164 n = UDCBCN(ep_num) & 0x3ff;
165 else /* zlp */
166 n = 0;
167 is_short = n != endpoint->rcv_packetSize;
168
169 usbdbg("n %d%s", n, is_short ? "-s" : "");
170 for (i = 0; i < n; i += 4)
171 data32[urb->actual_length/4 + i/4] = *addr32;
172
173 udc_dump_buffer("urb read", (u8 *) data32, urb->actual_length + n);
174 usbd_rcv_complete(endpoint, n, 0);
175
176 return 0;
177 }
178
udc_read_urb_ep0(void)179 static int udc_read_urb_ep0(void)
180 {
181 u32 *addr32 = (u32 *) &UDCDN(0);
182 u32 *data32 = (u32 *) ep0_urb->buffer;
183 u8 *addr8 = (u8 *) &UDCDN(0);
184 u8 *data8 = (u8 *) ep0_urb->buffer;
185 unsigned int i, n, w, b;
186
187 n = UDCBCR0;
188 w = n / 4;
189 b = n % 4;
190
191 for (i = 0; i < w; i++) {
192 data32[ep0_urb->actual_length/4 + i] = *addr32;
193 ep0_urb->actual_length += 4;
194 }
195
196 for (i = 0; i < b; i++) {
197 data8[ep0_urb->actual_length + w*4 + i] = *addr8;
198 ep0_urb->actual_length++;
199 }
200
201 UDCCSR0 = UDCCSR0_OPC | UDCCSR0_IPR;
202 if (ep0_urb->actual_length == ep0_urb->device_request.wLength)
203 return 1;
204
205 return 0;
206 }
207
udc_handle_ep0(struct usb_endpoint_instance * endpoint)208 static void udc_handle_ep0(struct usb_endpoint_instance *endpoint)
209 {
210 u32 udccsr0 = UDCCSR0;
211 u32 *data = (u32 *) &ep0_urb->device_request;
212 int i;
213
214 usbdbg("udccsr0 %x", udccsr0);
215
216 /* Clear stall status */
217 if (udccsr0 & UDCCSR0_SST) {
218 usberr("clear stall status");
219 UDCCSR0 = UDCCSR0_SST;
220 ep0state = EP0_IDLE;
221 }
222
223 /* previous request unfinished? non-error iff back-to-back ... */
224 if ((udccsr0 & UDCCSR0_SA) != 0 && ep0state != EP0_IDLE)
225 ep0state = EP0_IDLE;
226
227 switch (ep0state) {
228
229 case EP0_IDLE:
230
231 udccsr0 = UDCCSR0;
232 /* Start control request? */
233 if ((udccsr0 & (UDCCSR0_OPC | UDCCSR0_SA | UDCCSR0_RNE))
234 == (UDCCSR0_OPC | UDCCSR0_SA | UDCCSR0_RNE)) {
235
236 /* Read SETUP packet.
237 * SETUP packet size is 8 bytes (aka 2 words)
238 */
239 usbdbg("try reading SETUP packet");
240 for (i = 0; i < 2; i++) {
241 if ((UDCCSR0 & UDCCSR0_RNE) == 0) {
242 usberr("setup packet too short:%d", i);
243 goto stall;
244 }
245 data[i] = UDCDR0;
246 }
247
248 UDCCSR0 |= (UDCCSR0_OPC | UDCCSR0_SA);
249 if ((UDCCSR0 & UDCCSR0_RNE) != 0) {
250 usberr("setup packet too long");
251 goto stall;
252 }
253
254 udc_dump_buffer("ep0 setup read", (u8 *) data, 8);
255
256 if (ep0_urb->device_request.wLength == 0) {
257 usbdbg("Zero Data control Packet\n");
258 if (ep0_recv_setup(ep0_urb)) {
259 usberr("Invalid Setup Packet\n");
260 udc_dump_buffer("ep0 setup read",
261 (u8 *)data, 8);
262 goto stall;
263 }
264 UDCCSR0 = UDCCSR0_IPR;
265 ep0state = EP0_IDLE;
266 } else {
267 /* Check direction */
268 if ((ep0_urb->device_request.bmRequestType &
269 USB_REQ_DIRECTION_MASK)
270 == USB_REQ_HOST2DEVICE) {
271 ep0state = EP0_OUT_DATA;
272 ep0_urb->buffer =
273 (u8 *)ep0_urb->buffer_data;
274 ep0_urb->buffer_length =
275 sizeof(ep0_urb->buffer_data);
276 ep0_urb->actual_length = 0;
277 UDCCSR0 = UDCCSR0_IPR;
278 } else {
279 /* The ep0_recv_setup function has
280 * already placed our response packet
281 * data in ep0_urb->buffer and the
282 * packet length in
283 * ep0_urb->actual_length.
284 */
285 if (ep0_recv_setup(ep0_urb)) {
286 stall:
287 usberr("Invalid setup packet");
288 udc_dump_buffer("ep0 setup read"
289 , (u8 *) data, 8);
290 ep0state = EP0_IDLE;
291
292 UDCCSR0 = UDCCSR0_SA |
293 UDCCSR0_OPC | UDCCSR0_FST |
294 UDCCS0_FTF;
295
296 return;
297 }
298
299 endpoint->tx_urb = ep0_urb;
300 endpoint->sent = 0;
301 usbdbg("EP0_IN_DATA");
302 ep0state = EP0_IN_DATA;
303 if (udc_write_urb(endpoint) < 0)
304 goto stall;
305
306 }
307 }
308 return;
309 } else if ((udccsr0 & (UDCCSR0_OPC | UDCCSR0_SA))
310 == (UDCCSR0_OPC|UDCCSR0_SA)) {
311 usberr("Setup Active but no data. Stalling ....\n");
312 goto stall;
313 } else {
314 usbdbg("random early IRQs");
315 /* Some random early IRQs:
316 * - we acked FST
317 * - IPR cleared
318 * - OPC got set, without SA (likely status stage)
319 */
320 UDCCSR0 = udccsr0 & (UDCCSR0_SA | UDCCSR0_OPC);
321 }
322 break;
323
324 case EP0_OUT_DATA:
325
326 if ((udccsr0 & UDCCSR0_OPC) && !(udccsr0 & UDCCSR0_SA)) {
327 if (udc_read_urb_ep0()) {
328 read_complete:
329 ep0state = EP0_IDLE;
330 if (ep0_recv_setup(ep0_urb)) {
331 /* Not a setup packet, stall next
332 * EP0 transaction
333 */
334 udc_dump_buffer("ep0 setup read",
335 (u8 *) data, 8);
336 usberr("can't parse setup packet\n");
337 goto stall;
338 }
339 }
340 } else if (!(udccsr0 & UDCCSR0_OPC) &&
341 !(udccsr0 & UDCCSR0_IPR)) {
342 if (ep0_urb->device_request.wLength ==
343 ep0_urb->actual_length)
344 goto read_complete;
345
346 usberr("Premature Status\n");
347 ep0state = EP0_IDLE;
348 }
349 break;
350
351 case EP0_IN_DATA:
352 /* GET_DESCRIPTOR etc */
353 if (udccsr0 & UDCCSR0_OPC) {
354 UDCCSR0 = UDCCSR0_OPC | UDCCSR0_FTF;
355 usberr("ep0in premature status");
356 ep0state = EP0_IDLE;
357 } else {
358 /* irq was IPR clearing */
359 if (udc_write_urb(endpoint) < 0) {
360 usberr("ep0_write_error\n");
361 goto stall;
362 }
363 }
364 break;
365
366 case EP0_XFER_COMPLETE:
367 UDCCSR0 = UDCCSR0_IPR;
368 ep0state = EP0_IDLE;
369 break;
370
371 default:
372 usbdbg("Default\n");
373 }
374 USIR0 = USIR0_IR0;
375 }
376
udc_handle_ep(struct usb_endpoint_instance * endpoint)377 static void udc_handle_ep(struct usb_endpoint_instance *endpoint)
378 {
379 int ep_addr = endpoint->endpoint_address;
380 int ep_num = ep_addr & USB_ENDPOINT_NUMBER_MASK;
381 int ep_isout = (ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT;
382
383 u32 flags = UDCCSN(ep_num) & (UDCCSR_SST | UDCCSR_TRN);
384 if (flags)
385 UDCCSN(ep_num) = flags;
386
387 if (ep_isout)
388 udc_read_urb(endpoint);
389 else
390 udc_write_urb(endpoint);
391
392 UDCCSN(ep_num) = UDCCSR_PC;
393 }
394
udc_state_changed(void)395 static void udc_state_changed(void)
396 {
397 int config, interface, alternate;
398
399 UDCCR |= UDCCR_SMAC;
400
401 config = (UDCCR & UDCCR_ACN) >> UDCCR_ACN_S;
402 interface = (UDCCR & UDCCR_AIN) >> UDCCR_AIN_S;
403 alternate = (UDCCR & UDCCR_AAISN) >> UDCCR_AAISN_S;
404
405 usbdbg("New UDC settings are: conf %d - inter %d - alter %d",
406 config, interface, alternate);
407
408 usbd_device_event_irq(udc_device, DEVICE_CONFIGURED, 0);
409 UDCISR1 = UDCISR1_IRCC;
410 }
411
udc_irq(void)412 void udc_irq(void)
413 {
414 int handled;
415 struct usb_endpoint_instance *endpoint;
416 int ep_num, i;
417 u32 udcisr0;
418
419 do {
420 handled = 0;
421 /* Suspend Interrupt Request */
422 if (USIR1 & UDCCR_SUSIR) {
423 usbdbg("Suspend\n");
424 udc_ack_int_UDCCR(UDCCR_SUSIR);
425 handled = 1;
426 ep0state = EP0_IDLE;
427 }
428
429 /* Resume Interrupt Request */
430 if (USIR1 & UDCCR_RESIR) {
431 udc_ack_int_UDCCR(UDCCR_RESIR);
432 handled = 1;
433 usbdbg("USB resume\n");
434 }
435
436 if (USIR1 & (1<<31)) {
437 handled = 1;
438 udc_state_changed();
439 }
440
441 /* Reset Interrupt Request */
442 if (USIR1 & UDCCR_RSTIR) {
443 udc_ack_int_UDCCR(UDCCR_RSTIR);
444 handled = 1;
445 usbdbg("Reset\n");
446 usbd_device_event_irq(udc_device, DEVICE_RESET, 0);
447 } else {
448 if (USIR0)
449 usbdbg("UISR0: %x \n", USIR0);
450
451 if (USIR0 & 0x2)
452 USIR0 = 0x2;
453
454 /* Control traffic */
455 if (USIR0 & USIR0_IR0) {
456 handled = 1;
457 udc_handle_ep0(udc_device->bus->endpoint_array);
458 USIR0 = USIR0_IR0;
459 }
460
461 endpoint = udc_device->bus->endpoint_array;
462 for (i = 0; i < udc_device->bus->max_endpoints; i++) {
463 ep_num = (endpoint[i].endpoint_address) &
464 USB_ENDPOINT_NUMBER_MASK;
465 if (!ep_num)
466 continue;
467 udcisr0 = UDCISR0;
468 if (udcisr0 &
469 UDCISR_INT(ep_num, UDC_INT_PACKETCMP)) {
470 UDCISR0 = UDCISR_INT(ep_num,
471 UDC_INT_PACKETCMP);
472 udc_handle_ep(&endpoint[i]);
473 }
474 }
475 }
476
477 } while (handled);
478 }
479
480 /* The UDCCR reg contains mask and interrupt status bits,
481 * so using '|=' isn't safe as it may ack an interrupt.
482 */
483 #define UDCCR_OEN (1 << 31) /* On-the-Go Enable */
484 #define UDCCR_MASK_BITS (UDCCR_OEN | UDCCR_UDE)
485
udc_set_mask_UDCCR(int mask)486 static inline void udc_set_mask_UDCCR(int mask)
487 {
488 UDCCR = (UDCCR & UDCCR_MASK_BITS) | (mask & UDCCR_MASK_BITS);
489 }
490
udc_clear_mask_UDCCR(int mask)491 static inline void udc_clear_mask_UDCCR(int mask)
492 {
493 UDCCR = (UDCCR & UDCCR_MASK_BITS) & ~(mask & UDCCR_MASK_BITS);
494 }
495
pio_irq_enable(int ep_num)496 static void pio_irq_enable(int ep_num)
497 {
498 if (ep_num < 16)
499 UDCICR0 |= 3 << (ep_num * 2);
500 else {
501 ep_num -= 16;
502 UDCICR1 |= 3 << (ep_num * 2);
503 }
504 }
505
506 /*
507 * udc_set_nak
508 *
509 * Allow upper layers to signal lower layers should not accept more RX data
510 */
udc_set_nak(int ep_num)511 void udc_set_nak(int ep_num)
512 {
513 /* TODO */
514 }
515
516 /*
517 * udc_unset_nak
518 *
519 * Suspend sending of NAK tokens for DATA OUT tokens on a given endpoint.
520 * Switch off NAKing on this endpoint to accept more data output from host.
521 */
udc_unset_nak(int ep_num)522 void udc_unset_nak(int ep_num)
523 {
524 /* TODO */
525 }
526
udc_endpoint_write(struct usb_endpoint_instance * endpoint)527 int udc_endpoint_write(struct usb_endpoint_instance *endpoint)
528 {
529 return udc_write_urb(endpoint);
530 }
531
532 /* Associate a physical endpoint with endpoint instance */
udc_setup_ep(struct usb_device_instance * device,unsigned int id,struct usb_endpoint_instance * endpoint)533 void udc_setup_ep(struct usb_device_instance *device, unsigned int id,
534 struct usb_endpoint_instance *endpoint)
535 {
536 int ep_num, ep_addr, ep_isout, ep_type, ep_size;
537 int config, interface, alternate;
538 u32 tmp;
539
540 usbdbg("setting up endpoint id %d", id);
541
542 if (!endpoint) {
543 usberr("endpoint void!");
544 return;
545 }
546
547 ep_num = endpoint->endpoint_address & USB_ENDPOINT_NUMBER_MASK;
548 if (ep_num >= UDC_MAX_ENDPOINTS) {
549 usberr("unable to setup ep %d!", ep_num);
550 return;
551 }
552
553 pio_irq_enable(ep_num);
554 if (ep_num == 0) {
555 /* Done for ep0 */
556 return;
557 }
558
559 config = 1;
560 interface = 0;
561 alternate = 0;
562
563 usbdbg("config %d - interface %d - alternate %d",
564 config, interface, alternate);
565
566 ep_addr = endpoint->endpoint_address;
567 ep_num = ep_addr & USB_ENDPOINT_NUMBER_MASK;
568 ep_isout = (ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT;
569 ep_type = ep_isout ? endpoint->rcv_attributes : endpoint->tx_attributes;
570 ep_size = ep_isout ? endpoint->rcv_packetSize : endpoint->tx_packetSize;
571
572 usbdbg("addr %x, num %d, dir %s, type %s, packet size %d",
573 ep_addr, ep_num,
574 ep_isout ? "out" : "in",
575 ep_type == USB_ENDPOINT_XFER_ISOC ? "isoc" :
576 ep_type == USB_ENDPOINT_XFER_BULK ? "bulk" :
577 ep_type == USB_ENDPOINT_XFER_INT ? "int" : "???",
578 ep_size
579 );
580
581 /* Configure UDCCRx */
582 tmp = 0;
583 tmp |= (config << UDCCONR_CN_S) & UDCCONR_CN;
584 tmp |= (interface << UDCCONR_IN_S) & UDCCONR_IN;
585 tmp |= (alternate << UDCCONR_AISN_S) & UDCCONR_AISN;
586 tmp |= (ep_num << UDCCONR_EN_S) & UDCCONR_EN;
587 tmp |= (ep_type << UDCCONR_ET_S) & UDCCONR_ET;
588 tmp |= ep_isout ? 0 : UDCCONR_ED;
589 tmp |= (ep_size << UDCCONR_MPS_S) & UDCCONR_MPS;
590 tmp |= UDCCONR_EE;
591
592 UDCCN(ep_num) = tmp;
593
594 usbdbg("UDCCR%c = %x", 'A' + ep_num-1, UDCCN(ep_num));
595 usbdbg("UDCCSR%c = %x", 'A' + ep_num-1, UDCCSN(ep_num));
596 }
597
598 #define CONFIG_USB_DEV_PULLUP_GPIO 87
599
600 /* Connect the USB device to the bus */
udc_connect(void)601 void udc_connect(void)
602 {
603 usbdbg("UDC connect");
604
605 /* Turn on the USB connection by enabling the pullup resistor */
606 set_GPIO_mode(CONFIG_USB_DEV_PULLUP_GPIO | GPIO_OUT);
607 GPSR(CONFIG_USB_DEV_PULLUP_GPIO) = GPIO_bit(CONFIG_USB_DEV_PULLUP_GPIO);
608 }
609
610 /* Disconnect the USB device to the bus */
udc_disconnect(void)611 void udc_disconnect(void)
612 {
613 usbdbg("UDC disconnect");
614
615 /* Turn off the USB connection by disabling the pullup resistor */
616 GPCR(CONFIG_USB_DEV_PULLUP_GPIO) = GPIO_bit(CONFIG_USB_DEV_PULLUP_GPIO);
617 }
618
619 /* Switch on the UDC */
udc_enable(struct usb_device_instance * device)620 void udc_enable(struct usb_device_instance *device)
621 {
622
623 ep0state = EP0_IDLE;
624 CKEN |= CKEN11_USB;
625
626 /* enable endpoint 0, A, B's Packet Complete Interrupt. */
627 UDCICR0 = 0x0000003f;
628 UDCICR1 = 0xa8000000;
629
630 /* clear the interrupt status/control registers */
631 UDCISR0 = 0xffffffff;
632 UDCISR1 = 0xffffffff;
633
634 /* set UDC-enable */
635 udc_set_mask_UDCCR(UDCCR_UDE);
636
637 udc_device = device;
638 if (!ep0_urb)
639 ep0_urb = usbd_alloc_urb(udc_device,
640 udc_device->bus->endpoint_array);
641 else
642 usbinfo("ep0_urb %p already allocated", ep0_urb);
643
644 usbdbg("UDC Enabled\n");
645 }
646
647 /* Need to check this again */
udc_disable(void)648 void udc_disable(void)
649 {
650 usbdbg("disable UDC");
651
652 udc_clear_mask_UDCCR(UDCCR_UDE);
653
654 /* Disable clock for USB device */
655 CKEN &= ~CKEN11_USB;
656
657 /* Free ep0 URB */
658 if (ep0_urb) {
659 usbd_dealloc_urb(ep0_urb);
660 ep0_urb = NULL;
661 }
662
663 /* Reset device pointer */
664 udc_device = NULL;
665 }
666
667 /* Allow udc code to do any additional startup */
udc_startup_events(struct usb_device_instance * device)668 void udc_startup_events(struct usb_device_instance *device)
669 {
670 /* The DEVICE_INIT event puts the USB device in the state STATE_INIT */
671 usbd_device_event_irq(device, DEVICE_INIT, 0);
672
673 /* The DEVICE_CREATE event puts the USB device in the state
674 * STATE_ATTACHED */
675 usbd_device_event_irq(device, DEVICE_CREATE, 0);
676
677 /* Some USB controller driver implementations signal
678 * DEVICE_HUB_CONFIGURED and DEVICE_RESET events here.
679 * DEVICE_HUB_CONFIGURED causes a transition to the state
680 * STATE_POWERED, and DEVICE_RESET causes a transition to
681 * the state STATE_DEFAULT.
682 */
683 udc_enable(device);
684 }
685
686 /* Initialize h/w stuff */
udc_init(void)687 int udc_init(void)
688 {
689 udc_device = NULL;
690 usbdbg("PXA27x usbd start");
691
692 /* Disable the UDC */
693 udc_clear_mask_UDCCR(UDCCR_UDE);
694
695 /* Disable clock for USB device */
696 CKEN &= ~CKEN11_USB;
697
698 /* Disable IRQs: we don't use them */
699 UDCICR0 = UDCICR1 = 0;
700
701 return 0;
702 }
703