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
* SPDX-License-Identifier: GPL-2.0+
22
#include <asm/errno.h>
23
#include <linux/list.h>
26
#include <linux/usb/ch9.h>
27
#include <linux/usb/gadget.h>
29
#include <asm/byteorder.h>
30
#include <asm/unaligned.h>
33
#include <asm/mach-types.h>
34
#include <asm/arch/gpio.h>
37
#include <usb/lin_gadget_compat.h>
39
/***********************************************************/
41
#define OTG_DMA_MODE 1
46
#define DEBUG_OUT_EP 0
49
#include <usb/s3c_udc.h>
54
static char *state_names[] = {
57
"DATA_STATE_NEED_ZLP",
58
"WAIT_FOR_OUT_STATUS",
61
"WAIT_FOR_OUT_COMPLETE",
62
"WAIT_FOR_IN_COMPLETE",
63
"WAIT_FOR_NULL_COMPLETE",
66
#define DRIVER_DESC "S3C HS USB OTG Device Driver, (c) Samsung Electronics"
67
#define DRIVER_VERSION "15 March 2009"
69
struct s3c_udc *the_controller;
71
static const char driver_name[] = "s3c-udc";
72
static const char driver_desc[] = DRIVER_DESC;
73
static const char ep0name[] = "ep0-control";
76
static unsigned int ep0_fifo_size = 64;
77
static unsigned int ep_fifo_size = 512;
78
static unsigned int ep_fifo_size2 = 1024;
79
static int reset_available = 1;
81
static struct usb_ctrlrequest *usb_ctrl;
82
static dma_addr_t usb_ctrl_dma_addr;
87
static int s3c_ep_enable(struct usb_ep *ep,
88
const struct usb_endpoint_descriptor *);
89
static int s3c_ep_disable(struct usb_ep *ep);
90
static struct usb_request *s3c_alloc_request(struct usb_ep *ep,
92
static void s3c_free_request(struct usb_ep *ep, struct usb_request *);
94
static int s3c_queue(struct usb_ep *ep, struct usb_request *, gfp_t gfp_flags);
95
static int s3c_dequeue(struct usb_ep *ep, struct usb_request *);
96
static int s3c_fifo_status(struct usb_ep *ep);
97
static void s3c_fifo_flush(struct usb_ep *ep);
98
static void s3c_ep0_read(struct s3c_udc *dev);
99
static void s3c_ep0_kick(struct s3c_udc *dev, struct s3c_ep *ep);
100
static void s3c_handle_ep0(struct s3c_udc *dev);
101
static int s3c_ep0_write(struct s3c_udc *dev);
102
static int write_fifo_ep0(struct s3c_ep *ep, struct s3c_request *req);
103
static void done(struct s3c_ep *ep, struct s3c_request *req, int status);
104
static void stop_activity(struct s3c_udc *dev,
105
struct usb_gadget_driver *driver);
106
static int udc_enable(struct s3c_udc *dev);
107
static void udc_set_address(struct s3c_udc *dev, unsigned char address);
108
static void reconfig_usbd(void);
109
static void set_max_pktsize(struct s3c_udc *dev, enum usb_device_speed speed);
110
static void nuke(struct s3c_ep *ep, int status);
111
static int s3c_udc_set_halt(struct usb_ep *_ep, int value);
112
static void s3c_udc_set_nak(struct s3c_ep *ep);
114
void set_udc_gadget_private_data(void *p)
116
debug_cond(DEBUG_SETUP != 0,
117
"%s: the_controller: 0x%p, p: 0x%p\n", __func__,
119
the_controller->gadget.dev.device_data = p;
122
void *get_udc_gadget_private_data(struct usb_gadget *gadget)
124
return gadget->dev.device_data;
127
static struct usb_ep_ops s3c_ep_ops = {
128
.enable = s3c_ep_enable,
129
.disable = s3c_ep_disable,
131
.alloc_request = s3c_alloc_request,
132
.free_request = s3c_free_request,
135
.dequeue = s3c_dequeue,
137
.set_halt = s3c_udc_set_halt,
138
.fifo_status = s3c_fifo_status,
139
.fifo_flush = s3c_fifo_flush,
142
#define create_proc_files() do {} while (0)
143
#define remove_proc_files() do {} while (0)
145
/***********************************************************/
147
void __iomem *regs_otg;
148
struct s3c_usbotg_reg *reg;
149
struct s3c_usbotg_phy *phy;
150
static unsigned int usb_phy_ctrl;
152
void otg_phy_init(struct s3c_udc *dev)
154
dev->pdata->phy_control(1);
157
printf("USB PHY0 Enable\n");
160
writel(readl(usb_phy_ctrl) | USB_PHY_CTRL_EN0, usb_phy_ctrl);
162
if (dev->pdata->usb_flags == PHY0_SLEEP) /* C210 Universal */
163
writel((readl(&phy->phypwr)
164
&~(PHY_0_SLEEP | OTG_DISABLE_0 | ANALOG_PWRDOWN)
165
&~FORCE_SUSPEND_0), &phy->phypwr);
167
writel((readl(&phy->phypwr) &~(OTG_DISABLE_0 | ANALOG_PWRDOWN)
168
&~FORCE_SUSPEND_0), &phy->phypwr);
170
if (s5p_cpu_id == 0x4412)
171
writel((readl(&phy->phyclk) & ~(EXYNOS4X12_ID_PULLUP0 |
172
EXYNOS4X12_COMMON_ON_N0)) | EXYNOS4X12_CLK_SEL_24MHZ,
173
&phy->phyclk); /* PLL 24Mhz */
175
writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)) |
176
CLK_SEL_24MHZ, &phy->phyclk); /* PLL 24Mhz */
178
writel((readl(&phy->rstcon) &~(LINK_SW_RST | PHYLNK_SW_RST))
179
| PHY_SW_RST0, &phy->rstcon);
181
writel(readl(&phy->rstcon)
182
&~(PHY_SW_RST0 | LINK_SW_RST | PHYLNK_SW_RST), &phy->rstcon);
186
void otg_phy_off(struct s3c_udc *dev)
188
/* reset controller just in case */
189
writel(PHY_SW_RST0, &phy->rstcon);
191
writel(readl(&phy->phypwr) &~PHY_SW_RST0, &phy->rstcon);
194
writel(readl(&phy->phypwr) | OTG_DISABLE_0 | ANALOG_PWRDOWN
195
| FORCE_SUSPEND_0, &phy->phypwr);
197
writel(readl(usb_phy_ctrl) &~USB_PHY_CTRL_EN0, usb_phy_ctrl);
199
writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)),
204
dev->pdata->phy_control(0);
207
/***********************************************************/
209
#include "s3c_udc_otg_xfer_dma.c"
212
* udc_disable - disable USB device controller
214
static void udc_disable(struct s3c_udc *dev)
216
debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
218
udc_set_address(dev, 0);
220
dev->ep0state = WAIT_FOR_SETUP;
221
dev->gadget.speed = USB_SPEED_UNKNOWN;
222
dev->usb_address = 0;
228
* udc_reinit - initialize software state
230
static void udc_reinit(struct s3c_udc *dev)
234
debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
236
/* device/ep0 records init */
237
INIT_LIST_HEAD(&dev->gadget.ep_list);
238
INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
239
dev->ep0state = WAIT_FOR_SETUP;
241
/* basic endpoint records init */
242
for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
243
struct s3c_ep *ep = &dev->ep[i];
246
list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
250
INIT_LIST_HEAD(&ep->queue);
254
/* the rest was statically initialized, and is read-only */
257
#define BYTES2MAXP(x) (x / 8)
258
#define MAXP2BYTES(x) (x * 8)
260
/* until it's enabled, this UDC should be completely invisible
263
static int udc_enable(struct s3c_udc *dev)
265
debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
270
debug_cond(DEBUG_SETUP != 0,
271
"S3C USB 2.0 OTG Controller Core Initialized : 0x%x\n",
272
readl(®->gintmsk));
274
dev->gadget.speed = USB_SPEED_UNKNOWN;
280
Register entry point for the peripheral controller driver.
282
int usb_gadget_register_driver(struct usb_gadget_driver *driver)
284
struct s3c_udc *dev = the_controller;
288
debug_cond(DEBUG_SETUP != 0, "%s: %s\n", __func__, "no name");
291
|| (driver->speed != USB_SPEED_FULL
292
&& driver->speed != USB_SPEED_HIGH)
293
|| !driver->bind || !driver->disconnect || !driver->setup)
300
spin_lock_irqsave(&dev->lock, flags);
301
/* first hook up the driver ... */
302
dev->driver = driver;
303
spin_unlock_irqrestore(&dev->lock, flags);
305
if (retval) { /* TODO */
306
printf("target device_add failed, error %d\n", retval);
310
retval = driver->bind(&dev->gadget);
312
debug_cond(DEBUG_SETUP != 0,
313
"%s: bind to driver --> error %d\n",
314
dev->gadget.name, retval);
321
debug_cond(DEBUG_SETUP != 0,
322
"Registered gadget driver %s\n", dev->gadget.name);
329
* Unregister entry point for the peripheral controller driver.
331
int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
333
struct s3c_udc *dev = the_controller;
338
if (!driver || driver != dev->driver)
341
spin_lock_irqsave(&dev->lock, flags);
343
stop_activity(dev, driver);
344
spin_unlock_irqrestore(&dev->lock, flags);
346
driver->unbind(&dev->gadget);
348
disable_irq(IRQ_OTG);
355
* done - retire a request; caller blocked irqs
357
static void done(struct s3c_ep *ep, struct s3c_request *req, int status)
359
unsigned int stopped = ep->stopped;
361
debug("%s: %s %p, req = %p, stopped = %d\n",
362
__func__, ep->ep.name, ep, &req->req, stopped);
364
list_del_init(&req->queue);
366
if (likely(req->req.status == -EINPROGRESS))
367
req->req.status = status;
369
status = req->req.status;
371
if (status && status != -ESHUTDOWN) {
372
debug("complete %s req %p stat %d len %u/%u\n",
373
ep->ep.name, &req->req, status,
374
req->req.actual, req->req.length);
377
/* don't modify queue heads during completion callback */
381
printf("calling complete callback\n");
383
int i, len = req->req.length;
385
printf("pkt[%d] = ", req->req.length);
388
for (i = 0; i < len; i++) {
389
printf("%02x", ((u8 *)req->req.buf)[i]);
396
spin_unlock(&ep->dev->lock);
397
req->req.complete(&ep->ep, &req->req);
398
spin_lock(&ep->dev->lock);
400
debug("callback completed\n");
402
ep->stopped = stopped;
406
* nuke - dequeue ALL requests
408
static void nuke(struct s3c_ep *ep, int status)
410
struct s3c_request *req;
412
debug("%s: %s %p\n", __func__, ep->ep.name, ep);
414
/* called with irqs blocked */
415
while (!list_empty(&ep->queue)) {
416
req = list_entry(ep->queue.next, struct s3c_request, queue);
417
done(ep, req, status);
421
static void stop_activity(struct s3c_udc *dev,
422
struct usb_gadget_driver *driver)
426
/* don't disconnect drivers more than once */
427
if (dev->gadget.speed == USB_SPEED_UNKNOWN)
429
dev->gadget.speed = USB_SPEED_UNKNOWN;
431
/* prevent new request submissions, kill any outstanding requests */
432
for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
433
struct s3c_ep *ep = &dev->ep[i];
435
nuke(ep, -ESHUTDOWN);
438
/* report disconnect; the driver is already quiesced */
440
spin_unlock(&dev->lock);
441
driver->disconnect(&dev->gadget);
442
spin_lock(&dev->lock);
445
/* re-init driver-visible data structures */
449
static void reconfig_usbd(void)
451
/* 2. Soft-reset OTG Core and then unreset again. */
453
unsigned int uTemp = writel(CORE_SOFT_RESET, ®->grstctl);
455
debug("Reseting OTG controller\n");
457
writel(0<<15 /* PHY Low Power Clock sel*/
458
|1<<14 /* Non-Periodic TxFIFO Rewind Enable*/
459
|0x5<<10 /* Turnaround time*/
460
|0<<9 | 0<<8 /* [0:HNP disable,1:HNP enable][ 0:SRP disable*/
461
/* 1:SRP enable] H1= 1,1*/
462
|0<<7 /* Ulpi DDR sel*/
463
|0<<6 /* 0: high speed utmi+, 1: full speed serial*/
464
|0<<4 /* 0: utmi+, 1:ulpi*/
465
|1<<3 /* phy i/f 0:8bit, 1:16bit*/
466
|0x7<<0, /* HS/FS Timeout**/
469
/* 3. Put the OTG device core in the disconnected state.*/
470
uTemp = readl(®->dctl);
471
uTemp |= SOFT_DISCONNECT;
472
writel(uTemp, ®->dctl);
476
/* 4. Make the OTG device core exit from the disconnected state.*/
477
uTemp = readl(®->dctl);
478
uTemp = uTemp & ~SOFT_DISCONNECT;
479
writel(uTemp, ®->dctl);
481
/* 5. Configure OTG Core to initial settings of device mode.*/
482
/* [][1: full speed(30Mhz) 0:high speed]*/
483
writel(EP_MISS_CNT(1) | DEV_SPEED_HIGH_SPEED_20, ®->dcfg);
487
/* 6. Unmask the core interrupts*/
488
writel(GINTMSK_INIT, ®->gintmsk);
490
/* 7. Set NAK bit of EP0, EP1, EP2*/
491
writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->out_endp[EP0_CON].doepctl);
492
writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->in_endp[EP0_CON].diepctl);
494
for (i = 1; i < S3C_MAX_ENDPOINTS; i++) {
495
writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->out_endp[i].doepctl);
496
writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->in_endp[i].diepctl);
499
/* 8. Unmask EPO interrupts*/
500
writel(((1 << EP0_CON) << DAINT_OUT_BIT)
501
| (1 << EP0_CON), ®->daintmsk);
503
/* 9. Unmask device OUT EP common interrupts*/
504
writel(DOEPMSK_INIT, ®->doepmsk);
506
/* 10. Unmask device IN EP common interrupts*/
507
writel(DIEPMSK_INIT, ®->diepmsk);
509
/* 11. Set Rx FIFO Size (in 32-bit words) */
510
writel(RX_FIFO_SIZE >> 2, ®->grxfsiz);
512
/* 12. Set Non Periodic Tx FIFO Size */
513
writel((NPTX_FIFO_SIZE >> 2) << 16 | ((RX_FIFO_SIZE >> 2)) << 0,
516
for (i = 1; i < S3C_MAX_HW_ENDPOINTS; i++)
517
writel((PTX_FIFO_SIZE >> 2) << 16 |
518
((RX_FIFO_SIZE + NPTX_FIFO_SIZE +
519
PTX_FIFO_SIZE*(i-1)) >> 2) << 0,
522
/* Flush the RX FIFO */
523
writel(RX_FIFO_FLUSH, ®->grstctl);
524
while (readl(®->grstctl) & RX_FIFO_FLUSH)
525
debug("%s: waiting for S3C_UDC_OTG_GRSTCTL\n", __func__);
527
/* Flush all the Tx FIFO's */
528
writel(TX_FIFO_FLUSH_ALL, ®->grstctl);
529
writel(TX_FIFO_FLUSH_ALL | TX_FIFO_FLUSH, ®->grstctl);
530
while (readl(®->grstctl) & TX_FIFO_FLUSH)
531
debug("%s: waiting for S3C_UDC_OTG_GRSTCTL\n", __func__);
533
/* 13. Clear NAK bit of EP0, EP1, EP2*/
535
/* EP0: Control OUT */
536
writel(DEPCTL_EPDIS | DEPCTL_CNAK,
537
®->out_endp[EP0_CON].doepctl);
539
/* 14. Initialize OTG Link Core.*/
540
writel(GAHBCFG_INIT, ®->gahbcfg);
543
static void set_max_pktsize(struct s3c_udc *dev, enum usb_device_speed speed)
545
unsigned int ep_ctrl;
548
if (speed == USB_SPEED_HIGH) {
551
ep_fifo_size2 = 1024;
552
dev->gadget.speed = USB_SPEED_HIGH;
557
dev->gadget.speed = USB_SPEED_FULL;
560
dev->ep[0].ep.maxpacket = ep0_fifo_size;
561
for (i = 1; i < S3C_MAX_ENDPOINTS; i++)
562
dev->ep[i].ep.maxpacket = ep_fifo_size;
564
/* EP0 - Control IN (64 bytes)*/
565
ep_ctrl = readl(®->in_endp[EP0_CON].diepctl);
566
writel(ep_ctrl|(0<<0), ®->in_endp[EP0_CON].diepctl);
568
/* EP0 - Control OUT (64 bytes)*/
569
ep_ctrl = readl(®->out_endp[EP0_CON].doepctl);
570
writel(ep_ctrl|(0<<0), ®->out_endp[EP0_CON].doepctl);
573
static int s3c_ep_enable(struct usb_ep *_ep,
574
const struct usb_endpoint_descriptor *desc)
580
debug("%s: %p\n", __func__, _ep);
582
ep = container_of(_ep, struct s3c_ep, ep);
583
if (!_ep || !desc || ep->desc || _ep->name == ep0name
584
|| desc->bDescriptorType != USB_DT_ENDPOINT
585
|| ep->bEndpointAddress != desc->bEndpointAddress
586
|| ep_maxpacket(ep) <
587
le16_to_cpu(get_unaligned(&desc->wMaxPacketSize))) {
589
debug("%s: bad ep or descriptor\n", __func__);
593
/* xfer types must match, except that interrupt ~= bulk */
594
if (ep->bmAttributes != desc->bmAttributes
595
&& ep->bmAttributes != USB_ENDPOINT_XFER_BULK
596
&& desc->bmAttributes != USB_ENDPOINT_XFER_INT) {
598
debug("%s: %s type mismatch\n", __func__, _ep->name);
602
/* hardware _could_ do smaller, but driver doesn't */
603
if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
604
&& le16_to_cpu(get_unaligned(&desc->wMaxPacketSize)) !=
605
ep_maxpacket(ep)) || !get_unaligned(&desc->wMaxPacketSize)) {
607
debug("%s: bad %s maxpacket\n", __func__, _ep->name);
612
if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
614
debug("%s: bogus device state\n", __func__);
621
ep->ep.maxpacket = le16_to_cpu(get_unaligned(&desc->wMaxPacketSize));
623
/* Reset halt state */
625
s3c_udc_set_halt(_ep, 0);
627
spin_lock_irqsave(&ep->dev->lock, flags);
628
s3c_udc_ep_activate(ep);
629
spin_unlock_irqrestore(&ep->dev->lock, flags);
631
debug("%s: enabled %s, stopped = %d, maxpacket = %d\n",
632
__func__, _ep->name, ep->stopped, ep->ep.maxpacket);
639
static int s3c_ep_disable(struct usb_ep *_ep)
644
debug("%s: %p\n", __func__, _ep);
646
ep = container_of(_ep, struct s3c_ep, ep);
647
if (!_ep || !ep->desc) {
648
debug("%s: %s not enabled\n", __func__,
649
_ep ? ep->ep.name : NULL);
653
spin_lock_irqsave(&ep->dev->lock, flags);
655
/* Nuke all pending requests */
656
nuke(ep, -ESHUTDOWN);
661
spin_unlock_irqrestore(&ep->dev->lock, flags);
663
debug("%s: disabled %s\n", __func__, _ep->name);
667
static struct usb_request *s3c_alloc_request(struct usb_ep *ep,
670
struct s3c_request *req;
672
debug("%s: %s %p\n", __func__, ep->name, ep);
674
req = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*req));
678
memset(req, 0, sizeof *req);
679
INIT_LIST_HEAD(&req->queue);
684
static void s3c_free_request(struct usb_ep *ep, struct usb_request *_req)
686
struct s3c_request *req;
688
debug("%s: %p\n", __func__, ep);
690
req = container_of(_req, struct s3c_request, req);
691
WARN_ON(!list_empty(&req->queue));
695
/* dequeue JUST ONE request */
696
static int s3c_dequeue(struct usb_ep *_ep, struct usb_request *_req)
699
struct s3c_request *req;
702
debug("%s: %p\n", __func__, _ep);
704
ep = container_of(_ep, struct s3c_ep, ep);
705
if (!_ep || ep->ep.name == ep0name)
708
spin_lock_irqsave(&ep->dev->lock, flags);
710
/* make sure it's actually queued on this endpoint */
711
list_for_each_entry(req, &ep->queue, queue) {
712
if (&req->req == _req)
715
if (&req->req != _req) {
716
spin_unlock_irqrestore(&ep->dev->lock, flags);
720
done(ep, req, -ECONNRESET);
722
spin_unlock_irqrestore(&ep->dev->lock, flags);
727
* Return bytes in EP FIFO
729
static int s3c_fifo_status(struct usb_ep *_ep)
734
ep = container_of(_ep, struct s3c_ep, ep);
736
debug("%s: bad ep\n", __func__);
740
debug("%s: %d\n", __func__, ep_index(ep));
742
/* LPD can't report unclaimed bytes from IN fifos */
752
static void s3c_fifo_flush(struct usb_ep *_ep)
756
ep = container_of(_ep, struct s3c_ep, ep);
757
if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
758
debug("%s: bad ep\n", __func__);
762
debug("%s: %d\n", __func__, ep_index(ep));
765
static const struct usb_gadget_ops s3c_udc_ops = {
766
/* current versions must always be self-powered */
769
static struct s3c_udc memory = {
773
.ep0 = &memory.ep[0].ep,
777
/* control endpoint */
782
.maxpacket = EP0_FIFO_SIZE,
786
.bEndpointAddress = 0,
789
.ep_type = ep_control,
792
/* first group of endpoints */
795
.name = "ep1in-bulk",
797
.maxpacket = EP_FIFO_SIZE,
801
.bEndpointAddress = USB_DIR_IN | 1,
802
.bmAttributes = USB_ENDPOINT_XFER_BULK,
804
.ep_type = ep_bulk_out,
810
.name = "ep2out-bulk",
812
.maxpacket = EP_FIFO_SIZE,
816
.bEndpointAddress = USB_DIR_OUT | 2,
817
.bmAttributes = USB_ENDPOINT_XFER_BULK,
819
.ep_type = ep_bulk_in,
827
.maxpacket = EP_FIFO_SIZE,
831
.bEndpointAddress = USB_DIR_IN | 3,
832
.bmAttributes = USB_ENDPOINT_XFER_INT,
834
.ep_type = ep_interrupt,
840
* probe - binds to the platform device
843
int s3c_udc_probe(struct s3c_plat_otg_data *pdata)
845
struct s3c_udc *dev = &memory;
848
debug("%s: %p\n", __func__, pdata);
852
phy = (struct s3c_usbotg_phy *)pdata->regs_phy;
853
reg = (struct s3c_usbotg_reg *)pdata->regs_otg;
854
usb_phy_ctrl = pdata->usb_phy_ctrl;
856
/* regs_otg = (void *)pdata->regs_otg; */
858
dev->gadget.is_dualspeed = 1; /* Hack only*/
859
dev->gadget.is_otg = 0;
860
dev->gadget.is_a_peripheral = 0;
861
dev->gadget.b_hnp_enable = 0;
862
dev->gadget.a_hnp_support = 0;
863
dev->gadget.a_alt_hnp_support = 0;
865
the_controller = dev;
867
usb_ctrl = memalign(CONFIG_SYS_CACHELINE_SIZE,
868
ROUND(sizeof(struct usb_ctrlrequest),
869
CONFIG_SYS_CACHELINE_SIZE));
871
error("No memory available for UDC!\n");
875
usb_ctrl_dma_addr = (dma_addr_t) usb_ctrl;
882
int usb_gadget_handle_interrupts()
884
u32 intr_status = readl(®->gintsts);
885
u32 gintmsk = readl(®->gintmsk);
887
if (intr_status & gintmsk)
888
return s3c_udc_irq(1, (void *)the_controller);