2 * drivers/usb/gadget/s3c_udc_otg.c
3 * Samsung S3C on-chip full/high speed USB OTG 2.0 device controllers
5 * Copyright (C) 2008 for Samsung Electronics
7 * BSP Support for Samsung's UDC driver
9 * git://git.kernel.org/pub/scm/linux/kernel/git/kki_ap/linux-2.6-samsung.git
11 * State machine bugfixes:
12 * Marek Szyprowski <m.szyprowski@samsung.com>
15 * Marek Szyprowski <m.szyprowski@samsung.com>
16 * Lukasz Majewski <l.majewski@samsumg.com>
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2 of the License, or
21 * (at your option) any later version.
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
35 #include <asm/errno.h>
36 #include <linux/list.h>
39 #include <linux/usb/ch9.h>
40 #include <usbdescriptors.h>
41 #include <linux/usb/gadget.h>
43 #include <asm/byteorder.h>
44 #include <asm/unaligned.h>
47 #include <asm/mach-types.h>
48 #include <asm/arch/gpio.h>
51 #include <usb/lin_gadget_compat.h>
53 /***********************************************************/
55 #define OTG_DMA_MODE 1
57 #undef DEBUG_S3C_UDC_SETUP
58 #undef DEBUG_S3C_UDC_EP0
59 #undef DEBUG_S3C_UDC_ISR
60 #undef DEBUG_S3C_UDC_OUT_EP
61 #undef DEBUG_S3C_UDC_IN_EP
64 /* #define DEBUG_S3C_UDC_SETUP */
65 /* #define DEBUG_S3C_UDC_EP0 */
66 /* #define DEBUG_S3C_UDC_ISR */
67 /* #define DEBUG_S3C_UDC_OUT_EP */
68 /* #define DEBUG_S3C_UDC_IN_EP */
69 /* #define DEBUG_S3C_UDC */
71 #include <usb/s3c_udc.h>
76 static char *state_names[] = {
79 "DATA_STATE_NEED_ZLP",
80 "WAIT_FOR_OUT_STATUS",
83 "WAIT_FOR_OUT_COMPLETE",
84 "WAIT_FOR_IN_COMPLETE",
85 "WAIT_FOR_NULL_COMPLETE",
88 #define DRIVER_DESC "S3C HS USB OTG Device Driver, (c) Samsung Electronics"
89 #define DRIVER_VERSION "15 March 2009"
91 struct s3c_udc *the_controller;
93 static const char driver_name[] = "s3c-udc";
94 static const char driver_desc[] = DRIVER_DESC;
95 static const char ep0name[] = "ep0-control";
98 static unsigned int ep0_fifo_size = 64;
99 static unsigned int ep_fifo_size = 512;
100 static unsigned int ep_fifo_size2 = 1024;
101 static int reset_available = 1;
103 static struct usb_ctrlrequest *usb_ctrl;
104 static dma_addr_t usb_ctrl_dma_addr;
109 static int s3c_ep_enable(struct usb_ep *ep,
110 const struct usb_endpoint_descriptor *);
111 static int s3c_ep_disable(struct usb_ep *ep);
112 static struct usb_request *s3c_alloc_request(struct usb_ep *ep,
114 static void s3c_free_request(struct usb_ep *ep, struct usb_request *);
116 static int s3c_queue(struct usb_ep *ep, struct usb_request *, gfp_t gfp_flags);
117 static int s3c_dequeue(struct usb_ep *ep, struct usb_request *);
118 static int s3c_fifo_status(struct usb_ep *ep);
119 static void s3c_fifo_flush(struct usb_ep *ep);
120 static void s3c_ep0_read(struct s3c_udc *dev);
121 static void s3c_ep0_kick(struct s3c_udc *dev, struct s3c_ep *ep);
122 static void s3c_handle_ep0(struct s3c_udc *dev);
123 static int s3c_ep0_write(struct s3c_udc *dev);
124 static int write_fifo_ep0(struct s3c_ep *ep, struct s3c_request *req);
125 static void done(struct s3c_ep *ep, struct s3c_request *req, int status);
126 static void stop_activity(struct s3c_udc *dev,
127 struct usb_gadget_driver *driver);
128 static int udc_enable(struct s3c_udc *dev);
129 static void udc_set_address(struct s3c_udc *dev, unsigned char address);
130 static void reconfig_usbd(void);
131 static void set_max_pktsize(struct s3c_udc *dev, enum usb_device_speed speed);
132 static void nuke(struct s3c_ep *ep, int status);
133 static int s3c_udc_set_halt(struct usb_ep *_ep, int value);
134 static void s3c_udc_set_nak(struct s3c_ep *ep);
136 static struct usb_ep_ops s3c_ep_ops = {
137 .enable = s3c_ep_enable,
138 .disable = s3c_ep_disable,
140 .alloc_request = s3c_alloc_request,
141 .free_request = s3c_free_request,
144 .dequeue = s3c_dequeue,
146 .set_halt = s3c_udc_set_halt,
147 .fifo_status = s3c_fifo_status,
148 .fifo_flush = s3c_fifo_flush,
151 #define create_proc_files() do {} while (0)
152 #define remove_proc_files() do {} while (0)
154 /***********************************************************/
156 void __iomem *regs_otg;
157 struct s3c_usbotg_reg *reg;
158 struct s3c_usbotg_phy *phy;
159 static unsigned int usb_phy_ctrl;
161 void otg_phy_init(struct s3c_udc *dev)
163 dev->pdata->phy_control(1);
166 printf("USB PHY0 Enable\n");
169 writel(readl(usb_phy_ctrl) | USB_PHY_CTRL_EN0, usb_phy_ctrl);
171 if (dev->pdata->usb_flags == PHY0_SLEEP) /* C210 Universal */
172 writel((readl(&phy->phypwr)
173 &~(PHY_0_SLEEP | OTG_DISABLE_0 | ANALOG_PWRDOWN)
174 &~FORCE_SUSPEND_0), &phy->phypwr);
176 writel((readl(&phy->phypwr) &~(OTG_DISABLE_0 | ANALOG_PWRDOWN)
177 &~FORCE_SUSPEND_0), &phy->phypwr);
179 writel((readl(&phy->phyclk) &~(ID_PULLUP0 | COMMON_ON_N0)) |
180 CLK_SEL_24MHZ, &phy->phyclk); /* PLL 24Mhz */
182 writel((readl(&phy->rstcon) &~(LINK_SW_RST | PHYLNK_SW_RST))
183 | PHY_SW_RST0, &phy->rstcon);
185 writel(readl(&phy->rstcon)
186 &~(PHY_SW_RST0 | LINK_SW_RST | PHYLNK_SW_RST), &phy->rstcon);
190 void otg_phy_off(struct s3c_udc *dev)
192 /* reset controller just in case */
193 writel(PHY_SW_RST0, &phy->rstcon);
195 writel(readl(&phy->phypwr) &~PHY_SW_RST0, &phy->rstcon);
198 writel(readl(&phy->phypwr) | OTG_DISABLE_0 | ANALOG_PWRDOWN
199 | FORCE_SUSPEND_0, &phy->phypwr);
201 writel(readl(usb_phy_ctrl) &~USB_PHY_CTRL_EN0, usb_phy_ctrl);
203 writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)),
208 dev->pdata->phy_control(0);
211 /***********************************************************/
213 #include "s3c_udc_otg_xfer_dma.c"
216 * udc_disable - disable USB device controller
218 static void udc_disable(struct s3c_udc *dev)
220 DEBUG_SETUP("%s: %p\n", __func__, dev);
222 udc_set_address(dev, 0);
224 dev->ep0state = WAIT_FOR_SETUP;
225 dev->gadget.speed = USB_SPEED_UNKNOWN;
226 dev->usb_address = 0;
232 * udc_reinit - initialize software state
234 static void udc_reinit(struct s3c_udc *dev)
238 DEBUG_SETUP("%s: %p\n", __func__, dev);
240 /* device/ep0 records init */
241 INIT_LIST_HEAD(&dev->gadget.ep_list);
242 INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
243 dev->ep0state = WAIT_FOR_SETUP;
245 /* basic endpoint records init */
246 for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
247 struct s3c_ep *ep = &dev->ep[i];
250 list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
254 INIT_LIST_HEAD(&ep->queue);
258 /* the rest was statically initialized, and is read-only */
261 #define BYTES2MAXP(x) (x / 8)
262 #define MAXP2BYTES(x) (x * 8)
264 /* until it's enabled, this UDC should be completely invisible
267 static int udc_enable(struct s3c_udc *dev)
269 DEBUG_SETUP("%s: %p\n", __func__, dev);
274 DEBUG_SETUP("S3C USB 2.0 OTG Controller Core Initialized : 0x%x\n",
275 readl(®->gintmsk));
277 dev->gadget.speed = USB_SPEED_UNKNOWN;
283 Register entry point for the peripheral controller driver.
285 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
287 struct s3c_udc *dev = the_controller;
291 DEBUG_SETUP("%s: %s\n", __func__, "no name");
294 || (driver->speed != USB_SPEED_FULL
295 && driver->speed != USB_SPEED_HIGH)
296 || !driver->bind || !driver->disconnect || !driver->setup)
303 spin_lock_irqsave(&dev->lock, flags);
304 /* first hook up the driver ... */
305 dev->driver = driver;
306 spin_unlock_irqrestore(&dev->lock, flags);
308 if (retval) { /* TODO */
309 printf("target device_add failed, error %d\n", retval);
313 retval = driver->bind(&dev->gadget);
315 DEBUG_SETUP("%s: bind to driver --> error %d\n",
316 dev->gadget.name, retval);
323 DEBUG_SETUP("Registered gadget driver %s\n", dev->gadget.name);
330 * Unregister entry point for the peripheral controller driver.
332 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
334 struct s3c_udc *dev = the_controller;
339 if (!driver || driver != dev->driver)
342 spin_lock_irqsave(&dev->lock, flags);
344 stop_activity(dev, driver);
345 spin_unlock_irqrestore(&dev->lock, flags);
347 driver->unbind(&dev->gadget);
349 disable_irq(IRQ_OTG);
356 * done - retire a request; caller blocked irqs
358 static void done(struct s3c_ep *ep, struct s3c_request *req, int status)
360 unsigned int stopped = ep->stopped;
362 debug("%s: %s %p, req = %p, stopped = %d\n",
363 __func__, ep->ep.name, ep, &req->req, stopped);
365 list_del_init(&req->queue);
367 if (likely(req->req.status == -EINPROGRESS))
368 req->req.status = status;
370 status = req->req.status;
372 if (status && status != -ESHUTDOWN) {
373 debug("complete %s req %p stat %d len %u/%u\n",
374 ep->ep.name, &req->req, status,
375 req->req.actual, req->req.length);
378 /* don't modify queue heads during completion callback */
382 printf("calling complete callback\n");
384 int i, len = req->req.length;
386 printf("pkt[%d] = ", req->req.length);
389 for (i = 0; i < len; i++) {
390 printf("%02x", ((u8 *)req->req.buf)[i]);
397 spin_unlock(&ep->dev->lock);
398 req->req.complete(&ep->ep, &req->req);
399 spin_lock(&ep->dev->lock);
401 debug("callback completed\n");
403 ep->stopped = stopped;
407 * nuke - dequeue ALL requests
409 static void nuke(struct s3c_ep *ep, int status)
411 struct s3c_request *req;
413 debug("%s: %s %p\n", __func__, ep->ep.name, ep);
415 /* called with irqs blocked */
416 while (!list_empty(&ep->queue)) {
417 req = list_entry(ep->queue.next, struct s3c_request, queue);
418 done(ep, req, status);
422 static void stop_activity(struct s3c_udc *dev,
423 struct usb_gadget_driver *driver)
427 /* don't disconnect drivers more than once */
428 if (dev->gadget.speed == USB_SPEED_UNKNOWN)
430 dev->gadget.speed = USB_SPEED_UNKNOWN;
432 /* prevent new request submissions, kill any outstanding requests */
433 for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
434 struct s3c_ep *ep = &dev->ep[i];
436 nuke(ep, -ESHUTDOWN);
439 /* report disconnect; the driver is already quiesced */
441 spin_unlock(&dev->lock);
442 driver->disconnect(&dev->gadget);
443 spin_lock(&dev->lock);
446 /* re-init driver-visible data structures */
450 static void reconfig_usbd(void)
452 /* 2. Soft-reset OTG Core and then unreset again. */
454 unsigned int uTemp = writel(CORE_SOFT_RESET, ®->grstctl);
456 debug("Reseting OTG controller\n");
458 writel(0<<15 /* PHY Low Power Clock sel*/
459 |1<<14 /* Non-Periodic TxFIFO Rewind Enable*/
460 |0x5<<10 /* Turnaround time*/
461 |0<<9 | 0<<8 /* [0:HNP disable,1:HNP enable][ 0:SRP disable*/
462 /* 1:SRP enable] H1= 1,1*/
463 |0<<7 /* Ulpi DDR sel*/
464 |0<<6 /* 0: high speed utmi+, 1: full speed serial*/
465 |0<<4 /* 0: utmi+, 1:ulpi*/
466 |1<<3 /* phy i/f 0:8bit, 1:16bit*/
467 |0x7<<0, /* HS/FS Timeout**/
470 /* 3. Put the OTG device core in the disconnected state.*/
471 uTemp = readl(®->dctl);
472 uTemp |= SOFT_DISCONNECT;
473 writel(uTemp, ®->dctl);
477 /* 4. Make the OTG device core exit from the disconnected state.*/
478 uTemp = readl(®->dctl);
479 uTemp = uTemp & ~SOFT_DISCONNECT;
480 writel(uTemp, ®->dctl);
482 /* 5. Configure OTG Core to initial settings of device mode.*/
483 /* [][1: full speed(30Mhz) 0:high speed]*/
484 writel(EP_MISS_CNT(1) | DEV_SPEED_HIGH_SPEED_20, ®->dcfg);
488 /* 6. Unmask the core interrupts*/
489 writel(GINTMSK_INIT, ®->gintmsk);
491 /* 7. Set NAK bit of EP0, EP1, EP2*/
492 writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->out_endp[EP0_CON].doepctl);
493 writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->in_endp[EP0_CON].diepctl);
495 for (i = 1; i < S3C_MAX_ENDPOINTS; i++) {
496 writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->out_endp[i].doepctl);
497 writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->in_endp[i].diepctl);
500 /* 8. Unmask EPO interrupts*/
501 writel(((1 << EP0_CON) << DAINT_OUT_BIT)
502 | (1 << EP0_CON), ®->daintmsk);
504 /* 9. Unmask device OUT EP common interrupts*/
505 writel(DOEPMSK_INIT, ®->doepmsk);
507 /* 10. Unmask device IN EP common interrupts*/
508 writel(DIEPMSK_INIT, ®->diepmsk);
510 /* 11. Set Rx FIFO Size (in 32-bit words) */
511 writel(RX_FIFO_SIZE >> 2, ®->grxfsiz);
513 /* 12. Set Non Periodic Tx FIFO Size */
514 writel((NPTX_FIFO_SIZE >> 2) << 16 | ((RX_FIFO_SIZE >> 2)) << 0,
517 for (i = 1; i < S3C_MAX_HW_ENDPOINTS; i++)
518 writel((PTX_FIFO_SIZE >> 2) << 16 |
519 ((RX_FIFO_SIZE + NPTX_FIFO_SIZE +
520 PTX_FIFO_SIZE*(i-1)) >> 2) << 0,
523 /* Flush the RX FIFO */
524 writel(RX_FIFO_FLUSH, ®->grstctl);
525 while (readl(®->grstctl) & RX_FIFO_FLUSH)
526 debug("%s: waiting for S3C_UDC_OTG_GRSTCTL\n", __func__);
528 /* Flush all the Tx FIFO's */
529 writel(TX_FIFO_FLUSH_ALL, ®->grstctl);
530 writel(TX_FIFO_FLUSH_ALL | TX_FIFO_FLUSH, ®->grstctl);
531 while (readl(®->grstctl) & TX_FIFO_FLUSH)
532 debug("%s: waiting for S3C_UDC_OTG_GRSTCTL\n", __func__);
534 /* 13. Clear NAK bit of EP0, EP1, EP2*/
536 /* EP0: Control OUT */
537 writel(DEPCTL_EPDIS | DEPCTL_CNAK,
538 ®->out_endp[EP0_CON].doepctl);
540 /* 14. Initialize OTG Link Core.*/
541 writel(GAHBCFG_INIT, ®->gahbcfg);
544 static void set_max_pktsize(struct s3c_udc *dev, enum usb_device_speed speed)
546 unsigned int ep_ctrl;
549 if (speed == USB_SPEED_HIGH) {
552 ep_fifo_size2 = 1024;
553 dev->gadget.speed = USB_SPEED_HIGH;
558 dev->gadget.speed = USB_SPEED_FULL;
561 dev->ep[0].ep.maxpacket = ep0_fifo_size;
562 for (i = 1; i < S3C_MAX_ENDPOINTS; i++)
563 dev->ep[i].ep.maxpacket = ep_fifo_size;
565 /* EP0 - Control IN (64 bytes)*/
566 ep_ctrl = readl(®->in_endp[EP0_CON].diepctl);
567 writel(ep_ctrl|(0<<0), ®->in_endp[EP0_CON].diepctl);
569 /* EP0 - Control OUT (64 bytes)*/
570 ep_ctrl = readl(®->out_endp[EP0_CON].doepctl);
571 writel(ep_ctrl|(0<<0), ®->out_endp[EP0_CON].doepctl);
574 static int s3c_ep_enable(struct usb_ep *_ep,
575 const struct usb_endpoint_descriptor *desc)
581 debug("%s: %p\n", __func__, _ep);
583 ep = container_of(_ep, struct s3c_ep, ep);
584 if (!_ep || !desc || ep->desc || _ep->name == ep0name
585 || desc->bDescriptorType != USB_DT_ENDPOINT
586 || ep->bEndpointAddress != desc->bEndpointAddress
587 || ep_maxpacket(ep) <
588 le16_to_cpu(get_unaligned(&desc->wMaxPacketSize))) {
590 debug("%s: bad ep or descriptor\n", __func__);
594 /* xfer types must match, except that interrupt ~= bulk */
595 if (ep->bmAttributes != desc->bmAttributes
596 && ep->bmAttributes != USB_ENDPOINT_XFER_BULK
597 && desc->bmAttributes != USB_ENDPOINT_XFER_INT) {
599 debug("%s: %s type mismatch\n", __func__, _ep->name);
603 /* hardware _could_ do smaller, but driver doesn't */
604 if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
605 && le16_to_cpu(get_unaligned(&desc->wMaxPacketSize)) !=
606 ep_maxpacket(ep)) || !get_unaligned(&desc->wMaxPacketSize)) {
608 debug("%s: bad %s maxpacket\n", __func__, _ep->name);
613 if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
615 debug("%s: bogus device state\n", __func__);
622 ep->ep.maxpacket = le16_to_cpu(get_unaligned(&desc->wMaxPacketSize));
624 /* Reset halt state */
626 s3c_udc_set_halt(_ep, 0);
628 spin_lock_irqsave(&ep->dev->lock, flags);
629 s3c_udc_ep_activate(ep);
630 spin_unlock_irqrestore(&ep->dev->lock, flags);
632 debug("%s: enabled %s, stopped = %d, maxpacket = %d\n",
633 __func__, _ep->name, ep->stopped, ep->ep.maxpacket);
640 static int s3c_ep_disable(struct usb_ep *_ep)
645 debug("%s: %p\n", __func__, _ep);
647 ep = container_of(_ep, struct s3c_ep, ep);
648 if (!_ep || !ep->desc) {
649 debug("%s: %s not enabled\n", __func__,
650 _ep ? ep->ep.name : NULL);
654 spin_lock_irqsave(&ep->dev->lock, flags);
656 /* Nuke all pending requests */
657 nuke(ep, -ESHUTDOWN);
662 spin_unlock_irqrestore(&ep->dev->lock, flags);
664 debug("%s: disabled %s\n", __func__, _ep->name);
668 static struct usb_request *s3c_alloc_request(struct usb_ep *ep,
671 struct s3c_request *req;
673 debug("%s: %s %p\n", __func__, ep->name, ep);
675 req = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*req));
679 memset(req, 0, sizeof *req);
680 INIT_LIST_HEAD(&req->queue);
685 static void s3c_free_request(struct usb_ep *ep, struct usb_request *_req)
687 struct s3c_request *req;
689 debug("%s: %p\n", __func__, ep);
691 req = container_of(_req, struct s3c_request, req);
692 WARN_ON(!list_empty(&req->queue));
696 /* dequeue JUST ONE request */
697 static int s3c_dequeue(struct usb_ep *_ep, struct usb_request *_req)
700 struct s3c_request *req;
703 debug("%s: %p\n", __func__, _ep);
705 ep = container_of(_ep, struct s3c_ep, ep);
706 if (!_ep || ep->ep.name == ep0name)
709 spin_lock_irqsave(&ep->dev->lock, flags);
711 /* make sure it's actually queued on this endpoint */
712 list_for_each_entry(req, &ep->queue, queue) {
713 if (&req->req == _req)
716 if (&req->req != _req) {
717 spin_unlock_irqrestore(&ep->dev->lock, flags);
721 done(ep, req, -ECONNRESET);
723 spin_unlock_irqrestore(&ep->dev->lock, flags);
728 * Return bytes in EP FIFO
730 static int s3c_fifo_status(struct usb_ep *_ep)
735 ep = container_of(_ep, struct s3c_ep, ep);
737 debug("%s: bad ep\n", __func__);
741 debug("%s: %d\n", __func__, ep_index(ep));
743 /* LPD can't report unclaimed bytes from IN fifos */
753 static void s3c_fifo_flush(struct usb_ep *_ep)
757 ep = container_of(_ep, struct s3c_ep, ep);
758 if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
759 debug("%s: bad ep\n", __func__);
763 debug("%s: %d\n", __func__, ep_index(ep));
766 static const struct usb_gadget_ops s3c_udc_ops = {
767 /* current versions must always be self-powered */
770 static struct s3c_udc memory = {
774 .ep0 = &memory.ep[0].ep,
778 /* control endpoint */
783 .maxpacket = EP0_FIFO_SIZE,
787 .bEndpointAddress = 0,
790 .ep_type = ep_control,
793 /* first group of endpoints */
796 .name = "ep1in-bulk",
798 .maxpacket = EP_FIFO_SIZE,
802 .bEndpointAddress = USB_DIR_IN | 1,
803 .bmAttributes = USB_ENDPOINT_XFER_BULK,
805 .ep_type = ep_bulk_out,
811 .name = "ep2out-bulk",
813 .maxpacket = EP_FIFO_SIZE,
817 .bEndpointAddress = USB_DIR_OUT | 2,
818 .bmAttributes = USB_ENDPOINT_XFER_BULK,
820 .ep_type = ep_bulk_in,
828 .maxpacket = EP_FIFO_SIZE,
832 .bEndpointAddress = USB_DIR_IN | 3,
833 .bmAttributes = USB_ENDPOINT_XFER_INT,
835 .ep_type = ep_interrupt,
841 * probe - binds to the platform device
844 int s3c_udc_probe(struct s3c_plat_otg_data *pdata)
846 struct s3c_udc *dev = &memory;
849 debug("%s: %p\n", __func__, pdata);
853 phy = (struct s3c_usbotg_phy *)pdata->regs_phy;
854 reg = (struct s3c_usbotg_reg *)pdata->regs_otg;
855 usb_phy_ctrl = pdata->usb_phy_ctrl;
857 /* regs_otg = (void *)pdata->regs_otg; */
859 dev->gadget.is_dualspeed = 1; /* Hack only*/
860 dev->gadget.is_otg = 0;
861 dev->gadget.is_a_peripheral = 0;
862 dev->gadget.b_hnp_enable = 0;
863 dev->gadget.a_hnp_support = 0;
864 dev->gadget.a_alt_hnp_support = 0;
866 the_controller = dev;
868 for (i = 0; i < S3C_MAX_ENDPOINTS+1; i++) {
869 dev->dma_buf[i] = memalign(CONFIG_SYS_CACHELINE_SIZE,
871 dev->dma_addr[i] = (dma_addr_t) dev->dma_buf[i];
872 invalidate_dcache_range((unsigned long) dev->dma_buf[i],
873 (unsigned long) (dev->dma_buf[i]
876 usb_ctrl = dev->dma_buf[0];
877 usb_ctrl_dma_addr = dev->dma_addr[0];
884 int usb_gadget_handle_interrupts()
886 u32 intr_status = readl(®->gintsts);
887 u32 gintmsk = readl(®->gintmsk);
889 if (intr_status & gintmsk)
890 return s3c_udc_irq(1, (void *)the_controller);