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 <linux/usb/gadget.h>
42 #include <asm/byteorder.h>
43 #include <asm/unaligned.h>
46 #include <asm/mach-types.h>
47 #include <asm/arch/gpio.h>
50 #include <usb/lin_gadget_compat.h>
52 /***********************************************************/
54 #define OTG_DMA_MODE 1
59 #define DEBUG_OUT_EP 0
62 #include <usb/s3c_udc.h>
67 static char *state_names[] = {
70 "DATA_STATE_NEED_ZLP",
71 "WAIT_FOR_OUT_STATUS",
74 "WAIT_FOR_OUT_COMPLETE",
75 "WAIT_FOR_IN_COMPLETE",
76 "WAIT_FOR_NULL_COMPLETE",
79 #define DRIVER_DESC "S3C HS USB OTG Device Driver, (c) Samsung Electronics"
80 #define DRIVER_VERSION "15 March 2009"
82 struct s3c_udc *the_controller;
84 static const char driver_name[] = "s3c-udc";
85 static const char driver_desc[] = DRIVER_DESC;
86 static const char ep0name[] = "ep0-control";
89 static unsigned int ep0_fifo_size = 64;
90 static unsigned int ep_fifo_size = 512;
91 static unsigned int ep_fifo_size2 = 1024;
92 static int reset_available = 1;
94 static struct usb_ctrlrequest *usb_ctrl;
95 static dma_addr_t usb_ctrl_dma_addr;
100 static int s3c_ep_enable(struct usb_ep *ep,
101 const struct usb_endpoint_descriptor *);
102 static int s3c_ep_disable(struct usb_ep *ep);
103 static struct usb_request *s3c_alloc_request(struct usb_ep *ep,
105 static void s3c_free_request(struct usb_ep *ep, struct usb_request *);
107 static int s3c_queue(struct usb_ep *ep, struct usb_request *, gfp_t gfp_flags);
108 static int s3c_dequeue(struct usb_ep *ep, struct usb_request *);
109 static int s3c_fifo_status(struct usb_ep *ep);
110 static void s3c_fifo_flush(struct usb_ep *ep);
111 static void s3c_ep0_read(struct s3c_udc *dev);
112 static void s3c_ep0_kick(struct s3c_udc *dev, struct s3c_ep *ep);
113 static void s3c_handle_ep0(struct s3c_udc *dev);
114 static int s3c_ep0_write(struct s3c_udc *dev);
115 static int write_fifo_ep0(struct s3c_ep *ep, struct s3c_request *req);
116 static void done(struct s3c_ep *ep, struct s3c_request *req, int status);
117 static void stop_activity(struct s3c_udc *dev,
118 struct usb_gadget_driver *driver);
119 static int udc_enable(struct s3c_udc *dev);
120 static void udc_set_address(struct s3c_udc *dev, unsigned char address);
121 static void reconfig_usbd(void);
122 static void set_max_pktsize(struct s3c_udc *dev, enum usb_device_speed speed);
123 static void nuke(struct s3c_ep *ep, int status);
124 static int s3c_udc_set_halt(struct usb_ep *_ep, int value);
125 static void s3c_udc_set_nak(struct s3c_ep *ep);
127 void set_udc_gadget_private_data(void *p)
129 debug_cond(DEBUG_SETUP != 0,
130 "%s: the_controller: 0x%p, p: 0x%p\n", __func__,
132 the_controller->gadget.dev.device_data = p;
135 void *get_udc_gadget_private_data(struct usb_gadget *gadget)
137 return gadget->dev.device_data;
140 static struct usb_ep_ops s3c_ep_ops = {
141 .enable = s3c_ep_enable,
142 .disable = s3c_ep_disable,
144 .alloc_request = s3c_alloc_request,
145 .free_request = s3c_free_request,
148 .dequeue = s3c_dequeue,
150 .set_halt = s3c_udc_set_halt,
151 .fifo_status = s3c_fifo_status,
152 .fifo_flush = s3c_fifo_flush,
155 #define create_proc_files() do {} while (0)
156 #define remove_proc_files() do {} while (0)
158 /***********************************************************/
160 void __iomem *regs_otg;
161 struct s3c_usbotg_reg *reg;
162 struct s3c_usbotg_phy *phy;
163 static unsigned int usb_phy_ctrl;
165 void otg_phy_init(struct s3c_udc *dev)
167 dev->pdata->phy_control(1);
170 printf("USB PHY0 Enable\n");
173 writel(readl(usb_phy_ctrl) | USB_PHY_CTRL_EN0, usb_phy_ctrl);
175 if (dev->pdata->usb_flags == PHY0_SLEEP) /* C210 Universal */
176 writel((readl(&phy->phypwr)
177 &~(PHY_0_SLEEP | OTG_DISABLE_0 | ANALOG_PWRDOWN)
178 &~FORCE_SUSPEND_0), &phy->phypwr);
180 writel((readl(&phy->phypwr) &~(OTG_DISABLE_0 | ANALOG_PWRDOWN)
181 &~FORCE_SUSPEND_0), &phy->phypwr);
183 writel((readl(&phy->phyclk) &~(ID_PULLUP0 | COMMON_ON_N0)) |
184 CLK_SEL_24MHZ, &phy->phyclk); /* PLL 24Mhz */
186 writel((readl(&phy->rstcon) &~(LINK_SW_RST | PHYLNK_SW_RST))
187 | PHY_SW_RST0, &phy->rstcon);
189 writel(readl(&phy->rstcon)
190 &~(PHY_SW_RST0 | LINK_SW_RST | PHYLNK_SW_RST), &phy->rstcon);
194 void otg_phy_off(struct s3c_udc *dev)
196 /* reset controller just in case */
197 writel(PHY_SW_RST0, &phy->rstcon);
199 writel(readl(&phy->phypwr) &~PHY_SW_RST0, &phy->rstcon);
202 writel(readl(&phy->phypwr) | OTG_DISABLE_0 | ANALOG_PWRDOWN
203 | FORCE_SUSPEND_0, &phy->phypwr);
205 writel(readl(usb_phy_ctrl) &~USB_PHY_CTRL_EN0, usb_phy_ctrl);
207 writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)),
212 dev->pdata->phy_control(0);
215 /***********************************************************/
217 #include "s3c_udc_otg_xfer_dma.c"
220 * udc_disable - disable USB device controller
222 static void udc_disable(struct s3c_udc *dev)
224 debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
226 udc_set_address(dev, 0);
228 dev->ep0state = WAIT_FOR_SETUP;
229 dev->gadget.speed = USB_SPEED_UNKNOWN;
230 dev->usb_address = 0;
236 * udc_reinit - initialize software state
238 static void udc_reinit(struct s3c_udc *dev)
242 debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
244 /* device/ep0 records init */
245 INIT_LIST_HEAD(&dev->gadget.ep_list);
246 INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
247 dev->ep0state = WAIT_FOR_SETUP;
249 /* basic endpoint records init */
250 for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
251 struct s3c_ep *ep = &dev->ep[i];
254 list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
258 INIT_LIST_HEAD(&ep->queue);
262 /* the rest was statically initialized, and is read-only */
265 #define BYTES2MAXP(x) (x / 8)
266 #define MAXP2BYTES(x) (x * 8)
268 /* until it's enabled, this UDC should be completely invisible
271 static int udc_enable(struct s3c_udc *dev)
273 debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
278 debug_cond(DEBUG_SETUP != 0,
279 "S3C USB 2.0 OTG Controller Core Initialized : 0x%x\n",
280 readl(®->gintmsk));
282 dev->gadget.speed = USB_SPEED_UNKNOWN;
288 Register entry point for the peripheral controller driver.
290 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
292 struct s3c_udc *dev = the_controller;
296 debug_cond(DEBUG_SETUP != 0, "%s: %s\n", __func__, "no name");
299 || (driver->speed != USB_SPEED_FULL
300 && driver->speed != USB_SPEED_HIGH)
301 || !driver->bind || !driver->disconnect || !driver->setup)
308 spin_lock_irqsave(&dev->lock, flags);
309 /* first hook up the driver ... */
310 dev->driver = driver;
311 spin_unlock_irqrestore(&dev->lock, flags);
313 if (retval) { /* TODO */
314 printf("target device_add failed, error %d\n", retval);
318 retval = driver->bind(&dev->gadget);
320 debug_cond(DEBUG_SETUP != 0,
321 "%s: bind to driver --> error %d\n",
322 dev->gadget.name, retval);
329 debug_cond(DEBUG_SETUP != 0,
330 "Registered gadget driver %s\n", dev->gadget.name);
337 * Unregister entry point for the peripheral controller driver.
339 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
341 struct s3c_udc *dev = the_controller;
346 if (!driver || driver != dev->driver)
349 spin_lock_irqsave(&dev->lock, flags);
351 stop_activity(dev, driver);
352 spin_unlock_irqrestore(&dev->lock, flags);
354 driver->unbind(&dev->gadget);
356 disable_irq(IRQ_OTG);
363 * done - retire a request; caller blocked irqs
365 static void done(struct s3c_ep *ep, struct s3c_request *req, int status)
367 unsigned int stopped = ep->stopped;
369 debug("%s: %s %p, req = %p, stopped = %d\n",
370 __func__, ep->ep.name, ep, &req->req, stopped);
372 list_del_init(&req->queue);
374 if (likely(req->req.status == -EINPROGRESS))
375 req->req.status = status;
377 status = req->req.status;
379 if (status && status != -ESHUTDOWN) {
380 debug("complete %s req %p stat %d len %u/%u\n",
381 ep->ep.name, &req->req, status,
382 req->req.actual, req->req.length);
385 /* don't modify queue heads during completion callback */
389 printf("calling complete callback\n");
391 int i, len = req->req.length;
393 printf("pkt[%d] = ", req->req.length);
396 for (i = 0; i < len; i++) {
397 printf("%02x", ((u8 *)req->req.buf)[i]);
404 spin_unlock(&ep->dev->lock);
405 req->req.complete(&ep->ep, &req->req);
406 spin_lock(&ep->dev->lock);
408 debug("callback completed\n");
410 ep->stopped = stopped;
414 * nuke - dequeue ALL requests
416 static void nuke(struct s3c_ep *ep, int status)
418 struct s3c_request *req;
420 debug("%s: %s %p\n", __func__, ep->ep.name, ep);
422 /* called with irqs blocked */
423 while (!list_empty(&ep->queue)) {
424 req = list_entry(ep->queue.next, struct s3c_request, queue);
425 done(ep, req, status);
429 static void stop_activity(struct s3c_udc *dev,
430 struct usb_gadget_driver *driver)
434 /* don't disconnect drivers more than once */
435 if (dev->gadget.speed == USB_SPEED_UNKNOWN)
437 dev->gadget.speed = USB_SPEED_UNKNOWN;
439 /* prevent new request submissions, kill any outstanding requests */
440 for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
441 struct s3c_ep *ep = &dev->ep[i];
443 nuke(ep, -ESHUTDOWN);
446 /* report disconnect; the driver is already quiesced */
448 spin_unlock(&dev->lock);
449 driver->disconnect(&dev->gadget);
450 spin_lock(&dev->lock);
453 /* re-init driver-visible data structures */
457 static void reconfig_usbd(void)
459 /* 2. Soft-reset OTG Core and then unreset again. */
461 unsigned int uTemp = writel(CORE_SOFT_RESET, ®->grstctl);
463 debug("Reseting OTG controller\n");
465 writel(0<<15 /* PHY Low Power Clock sel*/
466 |1<<14 /* Non-Periodic TxFIFO Rewind Enable*/
467 |0x5<<10 /* Turnaround time*/
468 |0<<9 | 0<<8 /* [0:HNP disable,1:HNP enable][ 0:SRP disable*/
469 /* 1:SRP enable] H1= 1,1*/
470 |0<<7 /* Ulpi DDR sel*/
471 |0<<6 /* 0: high speed utmi+, 1: full speed serial*/
472 |0<<4 /* 0: utmi+, 1:ulpi*/
473 |1<<3 /* phy i/f 0:8bit, 1:16bit*/
474 |0x7<<0, /* HS/FS Timeout**/
477 /* 3. Put the OTG device core in the disconnected state.*/
478 uTemp = readl(®->dctl);
479 uTemp |= SOFT_DISCONNECT;
480 writel(uTemp, ®->dctl);
484 /* 4. Make the OTG device core exit from the disconnected state.*/
485 uTemp = readl(®->dctl);
486 uTemp = uTemp & ~SOFT_DISCONNECT;
487 writel(uTemp, ®->dctl);
489 /* 5. Configure OTG Core to initial settings of device mode.*/
490 /* [][1: full speed(30Mhz) 0:high speed]*/
491 writel(EP_MISS_CNT(1) | DEV_SPEED_HIGH_SPEED_20, ®->dcfg);
495 /* 6. Unmask the core interrupts*/
496 writel(GINTMSK_INIT, ®->gintmsk);
498 /* 7. Set NAK bit of EP0, EP1, EP2*/
499 writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->out_endp[EP0_CON].doepctl);
500 writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->in_endp[EP0_CON].diepctl);
502 for (i = 1; i < S3C_MAX_ENDPOINTS; i++) {
503 writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->out_endp[i].doepctl);
504 writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->in_endp[i].diepctl);
507 /* 8. Unmask EPO interrupts*/
508 writel(((1 << EP0_CON) << DAINT_OUT_BIT)
509 | (1 << EP0_CON), ®->daintmsk);
511 /* 9. Unmask device OUT EP common interrupts*/
512 writel(DOEPMSK_INIT, ®->doepmsk);
514 /* 10. Unmask device IN EP common interrupts*/
515 writel(DIEPMSK_INIT, ®->diepmsk);
517 /* 11. Set Rx FIFO Size (in 32-bit words) */
518 writel(RX_FIFO_SIZE >> 2, ®->grxfsiz);
520 /* 12. Set Non Periodic Tx FIFO Size */
521 writel((NPTX_FIFO_SIZE >> 2) << 16 | ((RX_FIFO_SIZE >> 2)) << 0,
524 for (i = 1; i < S3C_MAX_HW_ENDPOINTS; i++)
525 writel((PTX_FIFO_SIZE >> 2) << 16 |
526 ((RX_FIFO_SIZE + NPTX_FIFO_SIZE +
527 PTX_FIFO_SIZE*(i-1)) >> 2) << 0,
530 /* Flush the RX FIFO */
531 writel(RX_FIFO_FLUSH, ®->grstctl);
532 while (readl(®->grstctl) & RX_FIFO_FLUSH)
533 debug("%s: waiting for S3C_UDC_OTG_GRSTCTL\n", __func__);
535 /* Flush all the Tx FIFO's */
536 writel(TX_FIFO_FLUSH_ALL, ®->grstctl);
537 writel(TX_FIFO_FLUSH_ALL | TX_FIFO_FLUSH, ®->grstctl);
538 while (readl(®->grstctl) & TX_FIFO_FLUSH)
539 debug("%s: waiting for S3C_UDC_OTG_GRSTCTL\n", __func__);
541 /* 13. Clear NAK bit of EP0, EP1, EP2*/
543 /* EP0: Control OUT */
544 writel(DEPCTL_EPDIS | DEPCTL_CNAK,
545 ®->out_endp[EP0_CON].doepctl);
547 /* 14. Initialize OTG Link Core.*/
548 writel(GAHBCFG_INIT, ®->gahbcfg);
551 static void set_max_pktsize(struct s3c_udc *dev, enum usb_device_speed speed)
553 unsigned int ep_ctrl;
556 if (speed == USB_SPEED_HIGH) {
559 ep_fifo_size2 = 1024;
560 dev->gadget.speed = USB_SPEED_HIGH;
565 dev->gadget.speed = USB_SPEED_FULL;
568 dev->ep[0].ep.maxpacket = ep0_fifo_size;
569 for (i = 1; i < S3C_MAX_ENDPOINTS; i++)
570 dev->ep[i].ep.maxpacket = ep_fifo_size;
572 /* EP0 - Control IN (64 bytes)*/
573 ep_ctrl = readl(®->in_endp[EP0_CON].diepctl);
574 writel(ep_ctrl|(0<<0), ®->in_endp[EP0_CON].diepctl);
576 /* EP0 - Control OUT (64 bytes)*/
577 ep_ctrl = readl(®->out_endp[EP0_CON].doepctl);
578 writel(ep_ctrl|(0<<0), ®->out_endp[EP0_CON].doepctl);
581 static int s3c_ep_enable(struct usb_ep *_ep,
582 const struct usb_endpoint_descriptor *desc)
588 debug("%s: %p\n", __func__, _ep);
590 ep = container_of(_ep, struct s3c_ep, ep);
591 if (!_ep || !desc || ep->desc || _ep->name == ep0name
592 || desc->bDescriptorType != USB_DT_ENDPOINT
593 || ep->bEndpointAddress != desc->bEndpointAddress
594 || ep_maxpacket(ep) <
595 le16_to_cpu(get_unaligned(&desc->wMaxPacketSize))) {
597 debug("%s: bad ep or descriptor\n", __func__);
601 /* xfer types must match, except that interrupt ~= bulk */
602 if (ep->bmAttributes != desc->bmAttributes
603 && ep->bmAttributes != USB_ENDPOINT_XFER_BULK
604 && desc->bmAttributes != USB_ENDPOINT_XFER_INT) {
606 debug("%s: %s type mismatch\n", __func__, _ep->name);
610 /* hardware _could_ do smaller, but driver doesn't */
611 if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
612 && le16_to_cpu(get_unaligned(&desc->wMaxPacketSize)) !=
613 ep_maxpacket(ep)) || !get_unaligned(&desc->wMaxPacketSize)) {
615 debug("%s: bad %s maxpacket\n", __func__, _ep->name);
620 if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
622 debug("%s: bogus device state\n", __func__);
629 ep->ep.maxpacket = le16_to_cpu(get_unaligned(&desc->wMaxPacketSize));
631 /* Reset halt state */
633 s3c_udc_set_halt(_ep, 0);
635 spin_lock_irqsave(&ep->dev->lock, flags);
636 s3c_udc_ep_activate(ep);
637 spin_unlock_irqrestore(&ep->dev->lock, flags);
639 debug("%s: enabled %s, stopped = %d, maxpacket = %d\n",
640 __func__, _ep->name, ep->stopped, ep->ep.maxpacket);
647 static int s3c_ep_disable(struct usb_ep *_ep)
652 debug("%s: %p\n", __func__, _ep);
654 ep = container_of(_ep, struct s3c_ep, ep);
655 if (!_ep || !ep->desc) {
656 debug("%s: %s not enabled\n", __func__,
657 _ep ? ep->ep.name : NULL);
661 spin_lock_irqsave(&ep->dev->lock, flags);
663 /* Nuke all pending requests */
664 nuke(ep, -ESHUTDOWN);
669 spin_unlock_irqrestore(&ep->dev->lock, flags);
671 debug("%s: disabled %s\n", __func__, _ep->name);
675 static struct usb_request *s3c_alloc_request(struct usb_ep *ep,
678 struct s3c_request *req;
680 debug("%s: %s %p\n", __func__, ep->name, ep);
682 req = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*req));
686 memset(req, 0, sizeof *req);
687 INIT_LIST_HEAD(&req->queue);
692 static void s3c_free_request(struct usb_ep *ep, struct usb_request *_req)
694 struct s3c_request *req;
696 debug("%s: %p\n", __func__, ep);
698 req = container_of(_req, struct s3c_request, req);
699 WARN_ON(!list_empty(&req->queue));
703 /* dequeue JUST ONE request */
704 static int s3c_dequeue(struct usb_ep *_ep, struct usb_request *_req)
707 struct s3c_request *req;
710 debug("%s: %p\n", __func__, _ep);
712 ep = container_of(_ep, struct s3c_ep, ep);
713 if (!_ep || ep->ep.name == ep0name)
716 spin_lock_irqsave(&ep->dev->lock, flags);
718 /* make sure it's actually queued on this endpoint */
719 list_for_each_entry(req, &ep->queue, queue) {
720 if (&req->req == _req)
723 if (&req->req != _req) {
724 spin_unlock_irqrestore(&ep->dev->lock, flags);
728 done(ep, req, -ECONNRESET);
730 spin_unlock_irqrestore(&ep->dev->lock, flags);
735 * Return bytes in EP FIFO
737 static int s3c_fifo_status(struct usb_ep *_ep)
742 ep = container_of(_ep, struct s3c_ep, ep);
744 debug("%s: bad ep\n", __func__);
748 debug("%s: %d\n", __func__, ep_index(ep));
750 /* LPD can't report unclaimed bytes from IN fifos */
760 static void s3c_fifo_flush(struct usb_ep *_ep)
764 ep = container_of(_ep, struct s3c_ep, ep);
765 if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
766 debug("%s: bad ep\n", __func__);
770 debug("%s: %d\n", __func__, ep_index(ep));
773 static const struct usb_gadget_ops s3c_udc_ops = {
774 /* current versions must always be self-powered */
777 static struct s3c_udc memory = {
781 .ep0 = &memory.ep[0].ep,
785 /* control endpoint */
790 .maxpacket = EP0_FIFO_SIZE,
794 .bEndpointAddress = 0,
797 .ep_type = ep_control,
800 /* first group of endpoints */
803 .name = "ep1in-bulk",
805 .maxpacket = EP_FIFO_SIZE,
809 .bEndpointAddress = USB_DIR_IN | 1,
810 .bmAttributes = USB_ENDPOINT_XFER_BULK,
812 .ep_type = ep_bulk_out,
818 .name = "ep2out-bulk",
820 .maxpacket = EP_FIFO_SIZE,
824 .bEndpointAddress = USB_DIR_OUT | 2,
825 .bmAttributes = USB_ENDPOINT_XFER_BULK,
827 .ep_type = ep_bulk_in,
835 .maxpacket = EP_FIFO_SIZE,
839 .bEndpointAddress = USB_DIR_IN | 3,
840 .bmAttributes = USB_ENDPOINT_XFER_INT,
842 .ep_type = ep_interrupt,
848 * probe - binds to the platform device
851 int s3c_udc_probe(struct s3c_plat_otg_data *pdata)
853 struct s3c_udc *dev = &memory;
856 debug("%s: %p\n", __func__, pdata);
860 phy = (struct s3c_usbotg_phy *)pdata->regs_phy;
861 reg = (struct s3c_usbotg_reg *)pdata->regs_otg;
862 usb_phy_ctrl = pdata->usb_phy_ctrl;
864 /* regs_otg = (void *)pdata->regs_otg; */
866 dev->gadget.is_dualspeed = 1; /* Hack only*/
867 dev->gadget.is_otg = 0;
868 dev->gadget.is_a_peripheral = 0;
869 dev->gadget.b_hnp_enable = 0;
870 dev->gadget.a_hnp_support = 0;
871 dev->gadget.a_alt_hnp_support = 0;
873 the_controller = dev;
875 for (i = 0; i < S3C_MAX_ENDPOINTS+1; i++) {
876 dev->dma_buf[i] = memalign(CONFIG_SYS_CACHELINE_SIZE,
878 dev->dma_addr[i] = (dma_addr_t) dev->dma_buf[i];
879 invalidate_dcache_range((unsigned long) dev->dma_buf[i],
880 (unsigned long) (dev->dma_buf[i]
883 usb_ctrl = dev->dma_buf[0];
884 usb_ctrl_dma_addr = dev->dma_addr[0];
891 int usb_gadget_handle_interrupts()
893 u32 intr_status = readl(®->gintsts);
894 u32 gintmsk = readl(®->gintmsk);
896 if (intr_status & gintmsk)
897 return s3c_udc_irq(1, (void *)the_controller);