2 * drivers/usb/gadget/emxx_udc.c
3 * EMXX FCD (Function Controller Driver) for USB.
5 * Copyright (C) 2010 Renesas Electronics Corporation
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2
9 * as published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/platform_device.h>
20 #include <linux/delay.h>
21 #include <linux/ioport.h>
22 #include <linux/slab.h>
23 #include <linux/errno.h>
24 #include <linux/list.h>
25 #include <linux/interrupt.h>
26 #include <linux/proc_fs.h>
27 #include <linux/clk.h>
28 #include <linux/ctype.h>
29 #include <linux/string.h>
30 #include <linux/dma-mapping.h>
31 #include <linux/workqueue.h>
32 #include <linux/device.h>
34 #include <linux/usb/ch9.h>
35 #include <linux/usb/gadget.h>
37 #include <linux/irq.h>
38 #include <linux/gpio.h>
42 #define DMA_ADDR_INVALID (~(dma_addr_t)0)
44 static const char driver_name[] = "emxx_udc";
46 /*===========================================================================*/
48 static void _nbu2ss_ep_dma_abort(struct nbu2ss_udc *, struct nbu2ss_ep *);
49 static void _nbu2ss_ep0_enable(struct nbu2ss_udc *);
50 /*static void _nbu2ss_ep0_disable(struct nbu2ss_udc *);*/
51 static void _nbu2ss_ep_done(struct nbu2ss_ep *, struct nbu2ss_req *, int);
52 static void _nbu2ss_set_test_mode(struct nbu2ss_udc *, u32 mode);
53 static void _nbu2ss_endpoint_toggle_reset(struct nbu2ss_udc *udc, u8 ep_adrs);
55 static int _nbu2ss_pullup(struct nbu2ss_udc *, int);
56 static void _nbu2ss_fifo_flush(struct nbu2ss_udc *, struct nbu2ss_ep *);
58 /*===========================================================================*/
60 #define _nbu2ss_zero_len_pkt(udc, epnum) \
61 _nbu2ss_ep_in_end(udc, epnum, 0, 0)
63 /*===========================================================================*/
65 struct nbu2ss_udc udc_controller;
67 /*-------------------------------------------------------------------------*/
69 static inline u32 _nbu2ss_readl(void *address)
71 return __raw_readl(address);
74 /*-------------------------------------------------------------------------*/
76 static inline void _nbu2ss_writel(void *address, u32 udata)
78 __raw_writel(udata, address);
81 /*-------------------------------------------------------------------------*/
83 static inline void _nbu2ss_bitset(void *address, u32 udata)
85 u32 reg_dt = __raw_readl(address) | (udata);
87 __raw_writel(reg_dt, address);
90 /*-------------------------------------------------------------------------*/
92 static inline void _nbu2ss_bitclr(void *address, u32 udata)
94 u32 reg_dt = __raw_readl(address) & ~(udata);
96 __raw_writel(reg_dt, address);
100 /*-------------------------------------------------------------------------*/
101 static void _nbu2ss_dump_register(struct nbu2ss_udc *udc)
106 pr_info("=== %s()\n", __func__);
109 pr_err("%s udc == NULL\n", __func__);
113 spin_unlock(&udc->lock);
115 dev_dbg(&udc->dev, "\n-USB REG-\n");
116 for (i = 0x0 ; i < USB_BASE_SIZE ; i += 16) {
117 reg_data = _nbu2ss_readl(
118 (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i));
119 dev_dbg(&udc->dev, "USB%04x =%08x", i, (int)reg_data);
121 reg_data = _nbu2ss_readl(
122 (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i + 4));
123 dev_dbg(&udc->dev, " %08x", (int)reg_data);
125 reg_data = _nbu2ss_readl(
126 (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i + 8));
127 dev_dbg(&udc->dev, " %08x", (int)reg_data);
129 reg_data = _nbu2ss_readl(
130 (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i + 12));
131 dev_dbg(&udc->dev, " %08x\n", (int)reg_data);
135 spin_lock(&udc->lock);
137 #endif /* UDC_DEBUG_DUMP */
139 /*-------------------------------------------------------------------------*/
140 /* Endpoint 0 Callback (Complete) */
141 static void _nbu2ss_ep0_complete(struct usb_ep *_ep, struct usb_request *_req)
146 struct usb_ctrlrequest *p_ctrl;
147 struct nbu2ss_udc *udc;
149 if ((!_ep) || (!_req))
152 udc = (struct nbu2ss_udc *)_req->context;
154 if ((p_ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
156 if (p_ctrl->bRequest == USB_REQ_SET_FEATURE) {
157 /*-------------------------------------------------*/
159 recipient = (u8)(p_ctrl->bRequestType & USB_RECIP_MASK);
160 selector = p_ctrl->wValue;
161 if ((recipient == USB_RECIP_DEVICE) &&
162 (selector == USB_DEVICE_TEST_MODE)) {
163 test_mode = (u32)(p_ctrl->wIndex >> 8);
164 _nbu2ss_set_test_mode(udc, test_mode);
170 /*-------------------------------------------------------------------------*/
171 /* Initialization usb_request */
172 static void _nbu2ss_create_ep0_packet(
173 struct nbu2ss_udc *udc,
178 udc->ep0_req.req.buf = p_buf;
179 udc->ep0_req.req.length = length;
180 udc->ep0_req.req.dma = 0;
181 udc->ep0_req.req.zero = TRUE;
182 udc->ep0_req.req.complete = _nbu2ss_ep0_complete;
183 udc->ep0_req.req.status = -EINPROGRESS;
184 udc->ep0_req.req.context = udc;
185 udc->ep0_req.req.actual = 0;
188 /*-------------------------------------------------------------------------*/
189 /* Acquisition of the first address of RAM(FIFO) */
190 static u32 _nbu2ss_get_begin_ram_address(struct nbu2ss_udc *udc)
193 u32 data, last_ram_adr, use_ram_size;
195 struct ep_regs *p_ep_regs;
197 last_ram_adr = (D_RAM_SIZE_CTRL / sizeof(u32)) * 2;
200 for (num = 0; num < NUM_ENDPOINTS - 1; num++) {
201 p_ep_regs = &udc->p_regs->EP_REGS[num];
202 data = _nbu2ss_readl(&p_ep_regs->EP_PCKT_ADRS);
203 buf_type = _nbu2ss_readl(&p_ep_regs->EP_CONTROL) & EPn_BUF_TYPE;
206 use_ram_size += (data & EPn_MPKT) / sizeof(u32);
209 use_ram_size += ((data & EPn_MPKT) / sizeof(u32)) * 2;
212 if ((data >> 16) > last_ram_adr)
213 last_ram_adr = data >> 16;
216 return last_ram_adr + use_ram_size;
219 /*-------------------------------------------------------------------------*/
220 /* Construction of Endpoint */
221 static int _nbu2ss_ep_init(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep)
232 /*-------------------------------------------------------------*/
233 /* RAM Transfer Address */
234 begin_adrs = _nbu2ss_get_begin_ram_address(udc);
235 data = (begin_adrs << 16) | ep->ep.maxpacket;
236 _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_PCKT_ADRS, data);
238 /*-------------------------------------------------------------*/
239 /* Interrupt Enable */
240 data = 1 << (ep->epnum + 8);
241 _nbu2ss_bitset(&udc->p_regs->USB_INT_ENA, data);
243 /*-------------------------------------------------------------*/
244 /* Endpoint Type(Mode) */
245 /* Bulk, Interrupt, ISO */
246 switch (ep->ep_type) {
247 case USB_ENDPOINT_XFER_BULK:
251 case USB_ENDPOINT_XFER_INT:
252 data = EPn_BUF_SINGLE | EPn_INTERRUPT;
255 case USB_ENDPOINT_XFER_ISOC:
264 _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data);
265 _nbu2ss_endpoint_toggle_reset(udc, (ep->epnum|ep->direct));
267 if (ep->direct == USB_DIR_OUT) {
268 /*---------------------------------------------------------*/
270 data = EPn_EN | EPn_BCLR | EPn_DIR0;
271 _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data);
273 data = EPn_ONAK | EPn_OSTL_EN | EPn_OSTL;
274 _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data);
276 data = EPn_OUT_EN | EPn_OUT_END_EN;
277 _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data);
279 /*---------------------------------------------------------*/
281 data = EPn_EN | EPn_BCLR | EPn_AUTO;
282 _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data);
285 _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data);
287 data = EPn_IN_EN | EPn_IN_END_EN;
288 _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data);
294 /*-------------------------------------------------------------------------*/
295 /* Release of Endpoint */
296 static int _nbu2ss_epn_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep)
301 if ((ep->epnum == 0) || (udc->vbus_active == 0))
306 /*-------------------------------------------------------------*/
307 /* RAM Transfer Address */
308 _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_PCKT_ADRS, 0);
310 /*-------------------------------------------------------------*/
311 /* Interrupt Disable */
312 data = 1 << (ep->epnum + 8);
313 _nbu2ss_bitclr(&udc->p_regs->USB_INT_ENA, data);
315 if (ep->direct == USB_DIR_OUT) {
316 /*---------------------------------------------------------*/
318 data = EPn_ONAK | EPn_BCLR;
319 _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data);
321 data = EPn_EN | EPn_DIR0;
322 _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data);
324 data = EPn_OUT_EN | EPn_OUT_END_EN;
325 _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data);
327 /*---------------------------------------------------------*/
330 _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data);
332 data = EPn_EN | EPn_AUTO;
333 _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data);
335 data = EPn_IN_EN | EPn_IN_END_EN;
336 _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data);
342 /*-------------------------------------------------------------------------*/
343 /* DMA setting (without Endpoint 0) */
344 static void _nbu2ss_ep_dma_init(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep)
349 data = _nbu2ss_readl(&udc->p_regs->USBSSCONF);
350 if (((ep->epnum == 0) || (data & (1 << ep->epnum)) == 0))
351 return; /* Not Support DMA */
355 if (ep->direct == USB_DIR_OUT) {
356 /*---------------------------------------------------------*/
358 data = ep->ep.maxpacket;
359 _nbu2ss_writel(&udc->p_regs->EP_DCR[num].EP_DCR2, data);
361 /*---------------------------------------------------------*/
362 /* Transfer Direct */
363 data = DCR1_EPn_DIR0;
364 _nbu2ss_bitset(&udc->p_regs->EP_DCR[num].EP_DCR1, data);
366 /*---------------------------------------------------------*/
368 data = EPn_STOP_MODE | EPn_STOP_SET | EPn_DMAMODE0;
369 _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_DMA_CTRL, data);
371 /*---------------------------------------------------------*/
373 _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, EPn_AUTO);
375 /*---------------------------------------------------------*/
377 data = EPn_BURST_SET | EPn_DMAMODE0;
378 _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_DMA_CTRL, data);
382 /*-------------------------------------------------------------------------*/
383 /* DMA setting release */
384 static void _nbu2ss_ep_dma_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep)
388 struct fc_regs *preg = udc->p_regs;
390 if (udc->vbus_active == 0)
391 return; /* VBUS OFF */
393 data = _nbu2ss_readl(&preg->USBSSCONF);
394 if ((ep->epnum == 0) || ((data & (1 << ep->epnum)) == 0))
395 return; /* Not Support DMA */
399 _nbu2ss_ep_dma_abort(udc, ep);
401 if (ep->direct == USB_DIR_OUT) {
402 /*---------------------------------------------------------*/
404 _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR2, 0);
405 _nbu2ss_bitclr(&preg->EP_DCR[num].EP_DCR1, DCR1_EPn_DIR0);
406 _nbu2ss_writel(&preg->EP_REGS[num].EP_DMA_CTRL, 0);
408 /*---------------------------------------------------------*/
410 _nbu2ss_bitclr(&preg->EP_REGS[num].EP_CONTROL, EPn_AUTO);
411 _nbu2ss_writel(&preg->EP_REGS[num].EP_DMA_CTRL, 0);
415 /*-------------------------------------------------------------------------*/
417 static void _nbu2ss_ep_dma_abort(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep)
419 struct fc_regs *preg = udc->p_regs;
421 _nbu2ss_bitclr(&preg->EP_DCR[ep->epnum-1].EP_DCR1, DCR1_EPn_REQEN);
422 mdelay(DMA_DISABLE_TIME); /* DCR1_EPn_REQEN Clear */
423 _nbu2ss_bitclr(&preg->EP_REGS[ep->epnum-1].EP_DMA_CTRL, EPn_DMA_EN);
426 /*-------------------------------------------------------------------------*/
427 /* Start IN Transfer */
428 static void _nbu2ss_ep_in_end(
429 struct nbu2ss_udc *udc,
437 struct fc_regs *preg = udc->p_regs;
439 if (length >= sizeof(u32))
443 _nbu2ss_bitclr(&preg->EP0_CONTROL, EP0_AUTO);
445 /* Writing of 1-4 bytes */
447 _nbu2ss_writel(&preg->EP0_WRITE, data32);
449 data = ((length << 5) & EP0_DW) | EP0_DEND;
450 _nbu2ss_writel(&preg->EP0_CONTROL, data);
452 _nbu2ss_bitset(&preg->EP0_CONTROL, EP0_AUTO);
456 _nbu2ss_bitclr(&preg->EP_REGS[num].EP_CONTROL, EPn_AUTO);
458 /* Writing of 1-4 bytes */
460 _nbu2ss_writel(&preg->EP_REGS[num].EP_WRITE, data32);
462 data = ((((u32)length) << 5) & EPn_DW) | EPn_DEND;
463 _nbu2ss_bitset(&preg->EP_REGS[num].EP_CONTROL, data);
465 _nbu2ss_bitset(&preg->EP_REGS[num].EP_CONTROL, EPn_AUTO);
470 /*-------------------------------------------------------------------------*/
471 static void _nbu2ss_dma_map_single(
472 struct nbu2ss_udc *udc,
473 struct nbu2ss_ep *ep,
474 struct nbu2ss_req *req,
478 if (req->req.dma == DMA_ADDR_INVALID) {
480 req->req.dma = ep->phys_buf;
482 req->req.dma = dma_map_single(
483 udc->gadget.dev.parent,
486 (direct == USB_DIR_IN)
487 ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
492 dma_sync_single_for_device(
493 udc->gadget.dev.parent,
496 (direct == USB_DIR_IN)
497 ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
503 /*-------------------------------------------------------------------------*/
504 static void _nbu2ss_dma_unmap_single(
505 struct nbu2ss_udc *udc,
506 struct nbu2ss_ep *ep,
507 struct nbu2ss_req *req,
515 if (direct == USB_DIR_OUT) {
516 count = req->req.actual % 4;
519 p += (req->req.actual - count);
520 memcpy(data, p, count);
525 if (req->unaligned) {
526 if (direct == USB_DIR_OUT)
527 memcpy(req->req.buf, ep->virt_buf,
528 req->req.actual & 0xfffffffc);
530 dma_unmap_single(udc->gadget.dev.parent,
531 req->req.dma, req->req.length,
532 (direct == USB_DIR_IN)
535 req->req.dma = DMA_ADDR_INVALID;
539 dma_sync_single_for_cpu(udc->gadget.dev.parent,
540 req->req.dma, req->req.length,
541 (direct == USB_DIR_IN)
548 p += (req->req.actual - count);
549 memcpy(p, data, count);
554 /*-------------------------------------------------------------------------*/
555 /* Endpoint 0 OUT Transfer (PIO) */
556 static int EP0_out_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
561 union usb_reg_access *pBuf32 = (union usb_reg_access *)pBuf;
563 /*------------------------------------------------------------*/
565 iWordLength = length / sizeof(u32);
567 /*------------------------------------------------------------*/
570 for (i = 0; i < iWordLength; i++) {
571 pBuf32->dw = _nbu2ss_readl(&udc->p_regs->EP0_READ);
574 nret = iWordLength * sizeof(u32);
580 /*-------------------------------------------------------------------------*/
581 /* Endpoint 0 OUT Transfer (PIO, OverBytes) */
582 static int EP0_out_OverBytes(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
586 union usb_reg_access Temp32;
587 union usb_reg_access *pBuf32 = (union usb_reg_access *)pBuf;
589 if ((length > 0) && (length < sizeof(u32))) {
590 Temp32.dw = _nbu2ss_readl(&udc->p_regs->EP0_READ);
591 for (i = 0 ; i < length ; i++)
592 pBuf32->byte.DATA[i] = Temp32.byte.DATA[i];
599 /*-------------------------------------------------------------------------*/
600 /* Endpoint 0 IN Transfer (PIO) */
601 static int EP0_in_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
604 u32 iMaxLength = EP0_PACKETSIZE;
606 u32 iWriteLength = 0;
607 union usb_reg_access *pBuf32 = (union usb_reg_access *)pBuf;
609 /*------------------------------------------------------------*/
610 /* Transfer Length */
611 if (iMaxLength < length)
612 iWordLength = iMaxLength / sizeof(u32);
614 iWordLength = length / sizeof(u32);
616 /*------------------------------------------------------------*/
618 for (i = 0; i < iWordLength; i++) {
619 _nbu2ss_writel(&udc->p_regs->EP0_WRITE, pBuf32->dw);
621 iWriteLength += sizeof(u32);
627 /*-------------------------------------------------------------------------*/
628 /* Endpoint 0 IN Transfer (PIO, OverBytes) */
629 static int EP0_in_OverBytes(struct nbu2ss_udc *udc, u8 *pBuf, u32 iRemainSize)
632 union usb_reg_access Temp32;
633 union usb_reg_access *pBuf32 = (union usb_reg_access *)pBuf;
635 if ((iRemainSize > 0) && (iRemainSize < sizeof(u32))) {
636 for (i = 0 ; i < iRemainSize ; i++)
637 Temp32.byte.DATA[i] = pBuf32->byte.DATA[i];
638 _nbu2ss_ep_in_end(udc, 0, Temp32.dw, iRemainSize);
646 /*-------------------------------------------------------------------------*/
647 /* Transfer NULL Packet (Epndoint 0) */
648 static int EP0_send_NULL(struct nbu2ss_udc *udc, bool pid_flag)
652 data = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL);
653 data &= ~(u32)EP0_INAK;
656 data |= (EP0_INAK_EN | EP0_PIDCLR | EP0_DEND);
658 data |= (EP0_INAK_EN | EP0_DEND);
660 _nbu2ss_writel(&udc->p_regs->EP0_CONTROL, data);
665 /*-------------------------------------------------------------------------*/
666 /* Receive NULL Packet (Endpoint 0) */
667 static int EP0_receive_NULL(struct nbu2ss_udc *udc, bool pid_flag)
671 data = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL);
672 data &= ~(u32)EP0_ONAK;
677 _nbu2ss_writel(&udc->p_regs->EP0_CONTROL, data);
682 /*-------------------------------------------------------------------------*/
683 static int _nbu2ss_ep0_in_transfer(
684 struct nbu2ss_udc *udc,
685 struct nbu2ss_req *req
688 u8 *pBuffer; /* IN Data Buffer */
693 /*-------------------------------------------------------------*/
694 /* End confirmation */
695 if (req->req.actual == req->req.length) {
696 if ((req->req.actual % EP0_PACKETSIZE) == 0) {
699 EP0_send_NULL(udc, FALSE);
704 return 0; /* Transfer End */
707 /*-------------------------------------------------------------*/
709 data = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL);
711 data &= ~(u32)EP0_INAK;
712 _nbu2ss_writel(&udc->p_regs->EP0_CONTROL, data);
714 iRemainSize = req->req.length - req->req.actual;
715 pBuffer = (u8 *)req->req.buf;
716 pBuffer += req->req.actual;
718 /*-------------------------------------------------------------*/
720 result = EP0_in_PIO(udc, pBuffer, iRemainSize);
722 req->div_len = result;
723 iRemainSize -= result;
725 if (iRemainSize == 0) {
726 EP0_send_NULL(udc, FALSE);
730 if ((iRemainSize < sizeof(u32)) && (result != EP0_PACKETSIZE)) {
732 result += EP0_in_OverBytes(udc, pBuffer, iRemainSize);
733 req->div_len = result;
739 /*-------------------------------------------------------------------------*/
740 static int _nbu2ss_ep0_out_transfer(
741 struct nbu2ss_udc *udc,
742 struct nbu2ss_req *req
751 /*-------------------------------------------------------------*/
752 /* Receive data confirmation */
753 iRecvLength = _nbu2ss_readl(&udc->p_regs->EP0_LENGTH) & EP0_LDATA;
754 if (iRecvLength != 0) {
758 iRemainSize = req->req.length - req->req.actual;
759 pBuffer = (u8 *)req->req.buf;
760 pBuffer += req->req.actual;
762 result = EP0_out_PIO(udc, pBuffer
763 , min(iRemainSize, iRecvLength));
767 req->req.actual += result;
768 iRecvLength -= result;
770 if ((iRecvLength > 0) && (iRecvLength < sizeof(u32))) {
772 iRemainSize -= result;
774 result = EP0_out_OverBytes(udc, pBuffer
775 , min(iRemainSize, iRecvLength));
776 req->req.actual += result;
782 /*-------------------------------------------------------------*/
783 /* End confirmation */
784 if (req->req.actual == req->req.length) {
785 if ((req->req.actual % EP0_PACKETSIZE) == 0) {
788 EP0_receive_NULL(udc, FALSE);
793 return 0; /* Transfer End */
796 if ((req->req.actual % EP0_PACKETSIZE) != 0)
797 return 0; /* Short Packet Transfer End */
799 if (req->req.actual > req->req.length) {
800 dev_err(udc->dev, " *** Overrun Error\n");
805 iRemainSize = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL);
806 if (iRemainSize & EP0_ONAK) {
807 /*---------------------------------------------------*/
809 _nbu2ss_bitclr(&udc->p_regs->EP0_CONTROL, EP0_ONAK);
817 /*-------------------------------------------------------------------------*/
818 static int _nbu2ss_out_dma(
819 struct nbu2ss_udc *udc,
820 struct nbu2ss_req *req,
831 int result = -EINVAL;
832 struct fc_regs *preg = udc->p_regs;
835 return 1; /* DMA is forwarded */
837 req->dma_flag = TRUE;
838 pBuffer = req->req.dma;
839 pBuffer += req->req.actual;
842 _nbu2ss_writel(&preg->EP_DCR[num].EP_TADR, (u32)pBuffer);
844 /* Number of transfer packets */
845 mpkt = _nbu2ss_readl(&preg->EP_REGS[num].EP_PCKT_ADRS) & EPn_MPKT;
846 dmacnt = length / mpkt;
847 lmpkt = (length % mpkt) & ~(u32)0x03;
849 if (dmacnt > DMA_MAX_COUNT) {
850 dmacnt = DMA_MAX_COUNT;
852 } else if (lmpkt != 0) {
854 burst = 0; /* Burst OFF */
858 data = mpkt | (lmpkt << 16);
859 _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR2, data);
861 data = ((dmacnt & 0xff) << 16) | DCR1_EPn_DIR0 | DCR1_EPn_REQEN;
862 _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR1, data);
865 _nbu2ss_writel(&preg->EP_REGS[num].EP_LEN_DCNT, 0);
866 _nbu2ss_bitclr(&preg->EP_REGS[num].EP_DMA_CTRL, EPn_BURST_SET);
868 _nbu2ss_writel(&preg->EP_REGS[num].EP_LEN_DCNT
870 _nbu2ss_bitset(&preg->EP_REGS[num].EP_DMA_CTRL, EPn_BURST_SET);
872 _nbu2ss_bitset(&preg->EP_REGS[num].EP_DMA_CTRL, EPn_DMA_EN);
874 result = length & ~(u32)0x03;
875 req->div_len = result;
880 /*-------------------------------------------------------------------------*/
881 static int _nbu2ss_epn_out_pio(
882 struct nbu2ss_udc *udc,
883 struct nbu2ss_ep *ep,
884 struct nbu2ss_req *req,
892 union usb_reg_access Temp32;
893 union usb_reg_access *pBuf32;
895 struct fc_regs *preg = udc->p_regs;
898 return 1; /* DMA is forwarded */
903 pBuffer = (u8 *)req->req.buf;
904 pBuf32 = (union usb_reg_access *)(pBuffer + req->req.actual);
906 iWordLength = length / sizeof(u32);
907 if (iWordLength > 0) {
908 /*---------------------------------------------------------*/
909 /* Copy of every four bytes */
910 for (i = 0; i < iWordLength; i++) {
912 _nbu2ss_readl(&preg->EP_REGS[ep->epnum-1].EP_READ);
915 result = iWordLength * sizeof(u32);
918 data = length - result;
920 /*---------------------------------------------------------*/
921 /* Copy of fraction byte */
922 Temp32.dw = _nbu2ss_readl(&preg->EP_REGS[ep->epnum-1].EP_READ);
923 for (i = 0 ; i < data ; i++)
924 pBuf32->byte.DATA[i] = Temp32.byte.DATA[i];
928 req->req.actual += result;
930 if ((req->req.actual == req->req.length)
931 || ((req->req.actual % ep->ep.maxpacket) != 0)) {
939 /*-------------------------------------------------------------------------*/
940 static int _nbu2ss_epn_out_data(
941 struct nbu2ss_udc *udc,
942 struct nbu2ss_ep *ep,
943 struct nbu2ss_req *req,
956 iBufSize = min((req->req.length - req->req.actual), data_size);
958 if ((ep->ep_type != USB_ENDPOINT_XFER_INT)
959 && (req->req.dma != 0)
960 && (iBufSize >= sizeof(u32))) {
961 nret = _nbu2ss_out_dma(udc, req, num, iBufSize);
963 iBufSize = min_t(u32, iBufSize, ep->ep.maxpacket);
964 nret = _nbu2ss_epn_out_pio(udc, ep, req, iBufSize);
970 /*-------------------------------------------------------------------------*/
971 static int _nbu2ss_epn_out_transfer(
972 struct nbu2ss_udc *udc,
973 struct nbu2ss_ep *ep,
974 struct nbu2ss_req *req
980 struct fc_regs *preg = udc->p_regs;
987 /*-------------------------------------------------------------*/
990 = _nbu2ss_readl(&preg->EP_REGS[num].EP_LEN_DCNT) & EPn_LDATA;
992 if (iRecvLength != 0) {
993 result = _nbu2ss_epn_out_data(udc, ep, req, iRecvLength);
994 if (iRecvLength < ep->ep.maxpacket) {
995 if (iRecvLength == result) {
996 req->req.actual += result;
1001 if ((req->req.actual == req->req.length)
1002 || ((req->req.actual % ep->ep.maxpacket) != 0)) {
1009 if ((req->req.actual % ep->ep.maxpacket) == 0) {
1017 if (req->req.actual > req->req.length) {
1018 dev_err(udc->dev, " Overrun Error\n");
1019 dev_err(udc->dev, " actual = %d, length = %d\n",
1020 req->req.actual, req->req.length);
1021 result = -EOVERFLOW;
1027 /*-------------------------------------------------------------------------*/
1028 static int _nbu2ss_in_dma(
1029 struct nbu2ss_udc *udc,
1030 struct nbu2ss_ep *ep,
1031 struct nbu2ss_req *req,
1037 u32 mpkt; /* MaxPacketSize */
1038 u32 lmpkt; /* Last Packet Data Size */
1039 u32 dmacnt; /* IN Data Size */
1042 int result = -EINVAL;
1043 struct fc_regs *preg = udc->p_regs;
1046 return 1; /* DMA is forwarded */
1049 if (req->req.actual == 0)
1050 _nbu2ss_dma_map_single(udc, ep, req, USB_DIR_IN);
1052 req->dma_flag = TRUE;
1054 /* MAX Packet Size */
1055 mpkt = _nbu2ss_readl(&preg->EP_REGS[num].EP_PCKT_ADRS) & EPn_MPKT;
1057 if ((DMA_MAX_COUNT * mpkt) < length)
1058 iWriteLength = DMA_MAX_COUNT * mpkt;
1060 iWriteLength = length;
1062 /*------------------------------------------------------------*/
1063 /* Number of transmission packets */
1064 if (mpkt < iWriteLength) {
1065 dmacnt = iWriteLength / mpkt;
1066 lmpkt = (iWriteLength % mpkt) & ~(u32)0x3;
1070 lmpkt = mpkt & ~(u32)0x3;
1074 lmpkt = iWriteLength & ~(u32)0x3;
1077 /* Packet setting */
1078 data = mpkt | (lmpkt << 16);
1079 _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR2, data);
1081 /* Address setting */
1082 pBuffer = req->req.dma;
1083 pBuffer += req->req.actual;
1084 _nbu2ss_writel(&preg->EP_DCR[num].EP_TADR, (u32)pBuffer);
1086 /* Packet and DMA setting */
1087 data = ((dmacnt & 0xff) << 16) | DCR1_EPn_REQEN;
1088 _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR1, data);
1090 /* Packet setting of EPC */
1091 data = dmacnt << 16;
1092 _nbu2ss_writel(&preg->EP_REGS[num].EP_LEN_DCNT, data);
1094 /*DMA setting of EPC */
1095 _nbu2ss_bitset(&preg->EP_REGS[num].EP_DMA_CTRL, EPn_DMA_EN);
1097 result = iWriteLength & ~(u32)0x3;
1098 req->div_len = result;
1103 /*-------------------------------------------------------------------------*/
1104 static int _nbu2ss_epn_in_pio(
1105 struct nbu2ss_udc *udc,
1106 struct nbu2ss_ep *ep,
1107 struct nbu2ss_req *req,
1115 union usb_reg_access Temp32;
1116 union usb_reg_access *pBuf32 = NULL;
1118 struct fc_regs *preg = udc->p_regs;
1121 return 1; /* DMA is forwarded */
1124 pBuffer = (u8 *)req->req.buf;
1125 pBuf32 = (union usb_reg_access *)(pBuffer + req->req.actual);
1127 iWordLength = length / sizeof(u32);
1128 if (iWordLength > 0) {
1129 for (i = 0; i < iWordLength; i++) {
1131 &preg->EP_REGS[ep->epnum-1].EP_WRITE
1137 result = iWordLength * sizeof(u32);
1141 if (result != ep->ep.maxpacket) {
1142 data = length - result;
1144 for (i = 0 ; i < data ; i++)
1145 Temp32.byte.DATA[i] = pBuf32->byte.DATA[i];
1147 _nbu2ss_ep_in_end(udc, ep->epnum, Temp32.dw, data);
1151 req->div_len = result;
1156 /*-------------------------------------------------------------------------*/
1157 static int _nbu2ss_epn_in_data(
1158 struct nbu2ss_udc *udc,
1159 struct nbu2ss_ep *ep,
1160 struct nbu2ss_req *req,
1170 num = ep->epnum - 1;
1172 if ((ep->ep_type != USB_ENDPOINT_XFER_INT)
1173 && (req->req.dma != 0)
1174 && (data_size >= sizeof(u32))) {
1175 nret = _nbu2ss_in_dma(udc, ep, req, num, data_size);
1177 data_size = min_t(u32, data_size, ep->ep.maxpacket);
1178 nret = _nbu2ss_epn_in_pio(udc, ep, req, data_size);
1184 /*-------------------------------------------------------------------------*/
1185 static int _nbu2ss_epn_in_transfer(
1186 struct nbu2ss_udc *udc,
1187 struct nbu2ss_ep *ep,
1188 struct nbu2ss_req *req
1199 num = ep->epnum - 1;
1201 status = _nbu2ss_readl(&udc->p_regs->EP_REGS[num].EP_STATUS);
1203 /*-------------------------------------------------------------*/
1204 /* State confirmation of FIFO */
1205 if (req->req.actual == 0) {
1206 if ((status & EPn_IN_EMPTY) == 0)
1207 return 1; /* Not Empty */
1210 if ((status & EPn_IN_FULL) != 0)
1211 return 1; /* Not Empty */
1214 /*-------------------------------------------------------------*/
1215 /* Start transfer */
1216 iBufSize = req->req.length - req->req.actual;
1218 result = _nbu2ss_epn_in_data(udc, ep, req, iBufSize);
1219 else if (req->req.length == 0)
1220 _nbu2ss_zero_len_pkt(udc, ep->epnum);
1225 /*-------------------------------------------------------------------------*/
1226 static int _nbu2ss_start_transfer(
1227 struct nbu2ss_udc *udc,
1228 struct nbu2ss_ep *ep,
1229 struct nbu2ss_req *req,
1234 req->dma_flag = FALSE;
1237 if (req->req.length == 0)
1240 if ((req->req.length % ep->ep.maxpacket) == 0)
1241 req->zero = req->req.zero;
1246 if (ep->epnum == 0) {
1248 switch (udc->ep0state) {
1249 case EP0_IN_DATA_PHASE:
1250 nret = _nbu2ss_ep0_in_transfer(udc, req);
1253 case EP0_OUT_DATA_PHASE:
1254 nret = _nbu2ss_ep0_out_transfer(udc, req);
1257 case EP0_IN_STATUS_PHASE:
1258 nret = EP0_send_NULL(udc, TRUE);
1267 if (ep->direct == USB_DIR_OUT) {
1270 nret = _nbu2ss_epn_out_transfer(udc, ep, req);
1273 nret = _nbu2ss_epn_in_transfer(udc, ep, req);
1280 /*-------------------------------------------------------------------------*/
1281 static void _nbu2ss_restert_transfer(struct nbu2ss_ep *ep)
1285 struct nbu2ss_req *req;
1287 req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue);
1291 if (ep->epnum > 0) {
1292 length = _nbu2ss_readl(
1293 &ep->udc->p_regs->EP_REGS[ep->epnum-1].EP_LEN_DCNT);
1295 length &= EPn_LDATA;
1296 if (length < ep->ep.maxpacket)
1300 _nbu2ss_start_transfer(ep->udc, ep, req, bflag);
1303 /*-------------------------------------------------------------------------*/
1304 /* Endpoint Toggle Reset */
1305 static void _nbu2ss_endpoint_toggle_reset(
1306 struct nbu2ss_udc *udc,
1312 if ((ep_adrs == 0) || (ep_adrs == 0x80))
1315 num = (ep_adrs & 0x7F) - 1;
1317 if (ep_adrs & USB_DIR_IN)
1320 data = EPn_BCLR | EPn_OPIDCLR;
1322 _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data);
1325 /*-------------------------------------------------------------------------*/
1326 /* Endpoint STALL set */
1327 static void _nbu2ss_set_endpoint_stall(
1328 struct nbu2ss_udc *udc,
1334 struct nbu2ss_ep *ep;
1335 struct fc_regs *preg = udc->p_regs;
1337 if ((ep_adrs == 0) || (ep_adrs == 0x80)) {
1340 _nbu2ss_bitset(&preg->EP0_CONTROL, EP0_STL);
1343 _nbu2ss_bitclr(&preg->EP0_CONTROL, EP0_STL);
1346 epnum = ep_adrs & USB_ENDPOINT_NUMBER_MASK;
1348 ep = &udc->ep[epnum];
1354 if (ep_adrs & USB_DIR_IN)
1355 data = EPn_BCLR | EPn_ISTL;
1357 data = EPn_OSTL_EN | EPn_OSTL;
1359 _nbu2ss_bitset(&preg->EP_REGS[num].EP_CONTROL, data);
1362 ep->stalled = FALSE;
1363 if (ep_adrs & USB_DIR_IN) {
1364 _nbu2ss_bitclr(&preg->EP_REGS[num].EP_CONTROL
1368 _nbu2ss_readl(&preg->EP_REGS[num].EP_CONTROL);
1371 data |= EPn_OSTL_EN;
1373 _nbu2ss_writel(&preg->EP_REGS[num].EP_CONTROL
1377 ep->stalled = FALSE;
1380 _nbu2ss_restert_transfer(ep);
1386 /*-------------------------------------------------------------------------*/
1387 /* Device Descriptor */
1388 static struct usb_device_descriptor device_desc = {
1389 .bLength = sizeof(device_desc),
1390 .bDescriptorType = USB_DT_DEVICE,
1391 .bcdUSB = cpu_to_le16(0x0200),
1392 .bDeviceClass = USB_CLASS_VENDOR_SPEC,
1393 .bDeviceSubClass = 0x00,
1394 .bDeviceProtocol = 0x00,
1395 .bMaxPacketSize0 = 64,
1396 .idVendor = cpu_to_le16(0x0409),
1397 .idProduct = cpu_to_le16(0xfff0),
1398 .bcdDevice = 0xffff,
1399 .iManufacturer = 0x00,
1401 .iSerialNumber = 0x00,
1402 .bNumConfigurations = 0x01,
1405 /*-------------------------------------------------------------------------*/
1406 static void _nbu2ss_set_test_mode(struct nbu2ss_udc *udc, u32 mode)
1410 if (mode > MAX_TEST_MODE_NUM)
1413 dev_info(udc->dev, "SET FEATURE : test mode = %d\n", mode);
1415 data = _nbu2ss_readl(&udc->p_regs->USB_CONTROL);
1416 data &= ~TEST_FORCE_ENABLE;
1417 data |= mode << TEST_MODE_SHIFT;
1419 _nbu2ss_writel(&udc->p_regs->USB_CONTROL, data);
1420 _nbu2ss_bitset(&udc->p_regs->TEST_CONTROL, CS_TESTMODEEN);
1423 /*-------------------------------------------------------------------------*/
1424 static int _nbu2ss_set_feature_device(
1425 struct nbu2ss_udc *udc,
1430 int result = -EOPNOTSUPP;
1433 case USB_DEVICE_REMOTE_WAKEUP:
1434 if (wIndex == 0x0000) {
1435 udc->remote_wakeup = U2F_ENABLE;
1440 case USB_DEVICE_TEST_MODE:
1442 if (wIndex <= MAX_TEST_MODE_NUM)
1453 /*-------------------------------------------------------------------------*/
1454 static int _nbu2ss_get_ep_stall(struct nbu2ss_udc *udc, u8 ep_adrs)
1457 u32 data = 0, bit_data;
1458 struct fc_regs *preg = udc->p_regs;
1460 epnum = ep_adrs & ~USB_ENDPOINT_DIR_MASK;
1462 data = _nbu2ss_readl(&preg->EP0_CONTROL);
1466 data = _nbu2ss_readl(&preg->EP_REGS[epnum-1].EP_CONTROL);
1467 if ((data & EPn_EN) == 0)
1470 if (ep_adrs & USB_ENDPOINT_DIR_MASK)
1471 bit_data = EPn_ISTL;
1473 bit_data = EPn_OSTL;
1476 if ((data & bit_data) == 0)
1481 /*-------------------------------------------------------------------------*/
1482 static inline int _nbu2ss_req_feature(struct nbu2ss_udc *udc, bool bset)
1484 u8 recipient = (u8)(udc->ctrl.bRequestType & USB_RECIP_MASK);
1485 u8 direction = (u8)(udc->ctrl.bRequestType & USB_DIR_IN);
1486 u16 selector = udc->ctrl.wValue;
1487 u16 wIndex = udc->ctrl.wIndex;
1489 int result = -EOPNOTSUPP;
1491 if ((udc->ctrl.wLength != 0x0000) ||
1492 (direction != USB_DIR_OUT)) {
1496 switch (recipient) {
1497 case USB_RECIP_DEVICE:
1500 _nbu2ss_set_feature_device(udc, selector, wIndex);
1503 case USB_RECIP_ENDPOINT:
1504 if (0x0000 == (wIndex & 0xFF70)) {
1505 if (selector == USB_ENDPOINT_HALT) {
1506 ep_adrs = wIndex & 0xFF;
1508 _nbu2ss_endpoint_toggle_reset(
1512 _nbu2ss_set_endpoint_stall(
1513 udc, ep_adrs, bset);
1525 _nbu2ss_create_ep0_packet(udc, udc->ep0_buf, 0);
1530 /*-------------------------------------------------------------------------*/
1531 static inline enum usb_device_speed _nbu2ss_get_speed(struct nbu2ss_udc *udc)
1534 enum usb_device_speed speed = USB_SPEED_FULL;
1536 data = _nbu2ss_readl(&udc->p_regs->USB_STATUS);
1537 if (data & HIGH_SPEED)
1538 speed = USB_SPEED_HIGH;
1543 /*-------------------------------------------------------------------------*/
1544 static void _nbu2ss_epn_set_stall(
1545 struct nbu2ss_udc *udc,
1546 struct nbu2ss_ep *ep
1553 struct fc_regs *preg = udc->p_regs;
1555 if (ep->direct == USB_DIR_IN) {
1557 ; limit_cnt < IN_DATA_EMPTY_COUNT
1560 regdata = _nbu2ss_readl(
1561 &preg->EP_REGS[ep->epnum-1].EP_STATUS);
1563 if ((regdata & EPn_IN_DATA) == 0)
1570 ep_adrs = ep->epnum | ep->direct;
1571 _nbu2ss_set_endpoint_stall(udc, ep_adrs, 1);
1574 /*-------------------------------------------------------------------------*/
1575 static int std_req_get_status(struct nbu2ss_udc *udc)
1578 u16 status_data = 0;
1579 u8 recipient = (u8)(udc->ctrl.bRequestType & USB_RECIP_MASK);
1580 u8 direction = (u8)(udc->ctrl.bRequestType & USB_DIR_IN);
1582 int result = -EINVAL;
1584 if ((udc->ctrl.wValue != 0x0000)
1585 || (direction != USB_DIR_IN)) {
1590 length = min_t(u16, udc->ctrl.wLength, sizeof(status_data));
1592 switch (recipient) {
1593 case USB_RECIP_DEVICE:
1594 if (udc->ctrl.wIndex == 0x0000) {
1595 if (udc->gadget.is_selfpowered)
1596 status_data |= (1 << USB_DEVICE_SELF_POWERED);
1598 if (udc->remote_wakeup)
1599 status_data |= (1 << USB_DEVICE_REMOTE_WAKEUP);
1605 case USB_RECIP_ENDPOINT:
1606 if (0x0000 == (udc->ctrl.wIndex & 0xFF70)) {
1607 ep_adrs = (u8)(udc->ctrl.wIndex & 0xFF);
1608 result = _nbu2ss_get_ep_stall(udc, ep_adrs);
1611 status_data |= (1 << USB_ENDPOINT_HALT);
1620 memcpy(udc->ep0_buf, &status_data, length);
1621 _nbu2ss_create_ep0_packet(udc, udc->ep0_buf, length);
1622 _nbu2ss_ep0_in_transfer(udc, &udc->ep0_req);
1625 dev_err(udc->dev, " Error GET_STATUS\n");
1631 /*-------------------------------------------------------------------------*/
1632 static int std_req_clear_feature(struct nbu2ss_udc *udc)
1634 return _nbu2ss_req_feature(udc, FALSE);
1637 /*-------------------------------------------------------------------------*/
1638 static int std_req_set_feature(struct nbu2ss_udc *udc)
1640 return _nbu2ss_req_feature(udc, TRUE);
1643 /*-------------------------------------------------------------------------*/
1644 static int std_req_set_address(struct nbu2ss_udc *udc)
1647 u32 wValue = udc->ctrl.wValue;
1649 if ((udc->ctrl.bRequestType != 0x00) ||
1650 (udc->ctrl.wIndex != 0x0000) ||
1651 (udc->ctrl.wLength != 0x0000)) {
1655 if (wValue != (wValue & 0x007F))
1658 wValue <<= USB_ADRS_SHIFT;
1660 _nbu2ss_writel(&udc->p_regs->USB_ADDRESS, wValue);
1661 _nbu2ss_create_ep0_packet(udc, udc->ep0_buf, 0);
1666 /*-------------------------------------------------------------------------*/
1667 static int std_req_set_configuration(struct nbu2ss_udc *udc)
1669 u32 ConfigValue = (u32)(udc->ctrl.wValue & 0x00ff);
1671 if ((udc->ctrl.wIndex != 0x0000) ||
1672 (udc->ctrl.wLength != 0x0000) ||
1673 (udc->ctrl.bRequestType != 0x00)) {
1677 udc->curr_config = ConfigValue;
1679 if (ConfigValue > 0) {
1680 _nbu2ss_bitset(&udc->p_regs->USB_CONTROL, CONF);
1681 udc->devstate = USB_STATE_CONFIGURED;
1684 _nbu2ss_bitclr(&udc->p_regs->USB_CONTROL, CONF);
1685 udc->devstate = USB_STATE_ADDRESS;
1691 /*-------------------------------------------------------------------------*/
1692 static inline void _nbu2ss_read_request_data(struct nbu2ss_udc *udc, u32 *pdata)
1694 if ((!udc) && (!pdata))
1697 *pdata = _nbu2ss_readl(&udc->p_regs->SETUP_DATA0);
1699 *pdata = _nbu2ss_readl(&udc->p_regs->SETUP_DATA1);
1702 /*-------------------------------------------------------------------------*/
1703 static inline int _nbu2ss_decode_request(struct nbu2ss_udc *udc)
1705 bool bcall_back = TRUE;
1707 struct usb_ctrlrequest *p_ctrl;
1709 p_ctrl = &udc->ctrl;
1710 _nbu2ss_read_request_data(udc, (u32 *)p_ctrl);
1712 /* ep0 state control */
1713 if (p_ctrl->wLength == 0) {
1714 udc->ep0state = EP0_IN_STATUS_PHASE;
1717 if (p_ctrl->bRequestType & USB_DIR_IN)
1718 udc->ep0state = EP0_IN_DATA_PHASE;
1720 udc->ep0state = EP0_OUT_DATA_PHASE;
1723 if ((p_ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
1724 switch (p_ctrl->bRequest) {
1725 case USB_REQ_GET_STATUS:
1726 nret = std_req_get_status(udc);
1730 case USB_REQ_CLEAR_FEATURE:
1731 nret = std_req_clear_feature(udc);
1735 case USB_REQ_SET_FEATURE:
1736 nret = std_req_set_feature(udc);
1740 case USB_REQ_SET_ADDRESS:
1741 nret = std_req_set_address(udc);
1745 case USB_REQ_SET_CONFIGURATION:
1746 nret = std_req_set_configuration(udc);
1755 if (udc->ep0state == EP0_IN_STATUS_PHASE) {
1757 /*--------------------------------------*/
1759 nret = EP0_send_NULL(udc, TRUE);
1764 spin_unlock(&udc->lock);
1765 nret = udc->driver->setup(&udc->gadget, &udc->ctrl);
1766 spin_lock(&udc->lock);
1770 udc->ep0state = EP0_IDLE;
1775 /*-------------------------------------------------------------------------*/
1776 static inline int _nbu2ss_ep0_in_data_stage(struct nbu2ss_udc *udc)
1779 struct nbu2ss_req *req;
1780 struct nbu2ss_ep *ep = &udc->ep[0];
1782 req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue);
1784 req = &udc->ep0_req;
1786 req->req.actual += req->div_len;
1789 nret = _nbu2ss_ep0_in_transfer(udc, req);
1791 udc->ep0state = EP0_OUT_STATUS_PAHSE;
1792 EP0_receive_NULL(udc, TRUE);
1798 /*-------------------------------------------------------------------------*/
1799 static inline int _nbu2ss_ep0_out_data_stage(struct nbu2ss_udc *udc)
1802 struct nbu2ss_req *req;
1803 struct nbu2ss_ep *ep = &udc->ep[0];
1805 req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue);
1807 req = &udc->ep0_req;
1809 nret = _nbu2ss_ep0_out_transfer(udc, req);
1811 udc->ep0state = EP0_IN_STATUS_PHASE;
1812 EP0_send_NULL(udc, TRUE);
1814 } else if (nret < 0) {
1815 _nbu2ss_bitset(&udc->p_regs->EP0_CONTROL, EP0_BCLR);
1816 req->req.status = nret;
1822 /*-------------------------------------------------------------------------*/
1823 static inline int _nbu2ss_ep0_status_stage(struct nbu2ss_udc *udc)
1825 struct nbu2ss_req *req;
1826 struct nbu2ss_ep *ep = &udc->ep[0];
1828 req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue);
1830 req = &udc->ep0_req;
1831 if (req->req.complete)
1832 req->req.complete(&ep->ep, &req->req);
1835 if (req->req.complete)
1836 _nbu2ss_ep_done(ep, req, 0);
1839 udc->ep0state = EP0_IDLE;
1844 /*-------------------------------------------------------------------------*/
1845 static inline void _nbu2ss_ep0_int(struct nbu2ss_udc *udc)
1852 status = _nbu2ss_readl(&udc->p_regs->EP0_STATUS);
1853 intr = status & EP0_STATUS_RW_BIT;
1854 _nbu2ss_writel(&udc->p_regs->EP0_STATUS, ~(u32)intr);
1856 status &= (SETUP_INT | EP0_IN_INT | EP0_OUT_INT
1857 | STG_END_INT | EP0_OUT_NULL_INT);
1860 dev_info(udc->dev, "%s Not Decode Interrupt\n", __func__);
1861 dev_info(udc->dev, "EP0_STATUS = 0x%08x\n", intr);
1865 if (udc->gadget.speed == USB_SPEED_UNKNOWN)
1866 udc->gadget.speed = _nbu2ss_get_speed(udc);
1868 for (i = 0; i < EP0_END_XFER; i++) {
1869 switch (udc->ep0state) {
1871 if (status & SETUP_INT) {
1873 nret = _nbu2ss_decode_request(udc);
1877 case EP0_IN_DATA_PHASE:
1878 if (status & EP0_IN_INT) {
1879 status &= ~EP0_IN_INT;
1880 nret = _nbu2ss_ep0_in_data_stage(udc);
1884 case EP0_OUT_DATA_PHASE:
1885 if (status & EP0_OUT_INT) {
1886 status &= ~EP0_OUT_INT;
1887 nret = _nbu2ss_ep0_out_data_stage(udc);
1891 case EP0_IN_STATUS_PHASE:
1892 if ((status & STG_END_INT) || (status & SETUP_INT)) {
1893 status &= ~(STG_END_INT | EP0_IN_INT);
1894 nret = _nbu2ss_ep0_status_stage(udc);
1898 case EP0_OUT_STATUS_PAHSE:
1899 if ((status & STG_END_INT)
1900 || (status & SETUP_INT)
1901 || (status & EP0_OUT_NULL_INT)) {
1902 status &= ~(STG_END_INT
1904 | EP0_OUT_NULL_INT);
1906 nret = _nbu2ss_ep0_status_stage(udc);
1922 _nbu2ss_set_endpoint_stall(udc, 0, TRUE);
1926 /*-------------------------------------------------------------------------*/
1927 static void _nbu2ss_ep_done(
1928 struct nbu2ss_ep *ep,
1929 struct nbu2ss_req *req,
1932 struct nbu2ss_udc *udc = ep->udc;
1934 list_del_init(&req->queue);
1936 if (status == -ECONNRESET)
1937 _nbu2ss_fifo_flush(udc, ep);
1939 if (likely(req->req.status == -EINPROGRESS))
1940 req->req.status = status;
1943 _nbu2ss_epn_set_stall(udc, ep);
1945 if (!list_empty(&ep->queue))
1946 _nbu2ss_restert_transfer(ep);
1950 if ((ep->direct == USB_DIR_OUT) && (ep->epnum > 0) &&
1951 (req->req.dma != 0))
1952 _nbu2ss_dma_unmap_single(udc, ep, req, USB_DIR_OUT);
1955 spin_unlock(&udc->lock);
1956 req->req.complete(&ep->ep, &req->req);
1957 spin_lock(&udc->lock);
1960 /*-------------------------------------------------------------------------*/
1961 static inline void _nbu2ss_epn_in_int(
1962 struct nbu2ss_udc *udc,
1963 struct nbu2ss_ep *ep,
1964 struct nbu2ss_req *req)
1969 struct fc_regs *preg = udc->p_regs;
1972 return; /* DMA is forwarded */
1974 req->req.actual += req->div_len;
1977 if (req->req.actual != req->req.length) {
1978 /*---------------------------------------------------------*/
1979 /* remainder of data */
1980 result = _nbu2ss_epn_in_transfer(udc, ep, req);
1983 if (req->zero && ((req->req.actual % ep->ep.maxpacket) == 0)) {
1986 _nbu2ss_readl(&preg->EP_REGS[ep->epnum-1].EP_STATUS);
1988 if ((status & EPn_IN_FULL) == 0) {
1989 /*-----------------------------------------*/
1990 /* 0 Length Packet */
1992 _nbu2ss_zero_len_pkt(udc, ep->epnum);
1999 /*---------------------------------------------------------*/
2001 _nbu2ss_ep_done(ep, req, result);
2005 /*-------------------------------------------------------------------------*/
2006 static inline void _nbu2ss_epn_out_int(
2007 struct nbu2ss_udc *udc,
2008 struct nbu2ss_ep *ep,
2009 struct nbu2ss_req *req)
2013 result = _nbu2ss_epn_out_transfer(udc, ep, req);
2015 _nbu2ss_ep_done(ep, req, result);
2018 /*-------------------------------------------------------------------------*/
2019 static inline void _nbu2ss_epn_in_dma_int(
2020 struct nbu2ss_udc *udc,
2021 struct nbu2ss_ep *ep,
2022 struct nbu2ss_req *req)
2026 struct usb_request *preq;
2033 preq->actual += req->div_len;
2035 req->dma_flag = FALSE;
2038 _nbu2ss_dma_unmap_single(udc, ep, req, USB_DIR_IN);
2041 if (preq->actual != preq->length) {
2042 _nbu2ss_epn_in_transfer(udc, ep, req);
2044 mpkt = ep->ep.maxpacket;
2045 size = preq->actual % mpkt;
2047 if (((preq->actual & 0x03) == 0) && (size < mpkt))
2048 _nbu2ss_ep_in_end(udc, ep->epnum, 0, 0);
2050 _nbu2ss_epn_in_int(udc, ep, req);
2055 /*-------------------------------------------------------------------------*/
2056 static inline void _nbu2ss_epn_out_dma_int(
2057 struct nbu2ss_udc *udc,
2058 struct nbu2ss_ep *ep,
2059 struct nbu2ss_req *req)
2063 u32 dmacnt, ep_dmacnt;
2065 struct fc_regs *preg = udc->p_regs;
2067 num = ep->epnum - 1;
2069 if (req->req.actual == req->req.length) {
2070 if ((req->req.length % ep->ep.maxpacket) && !req->zero) {
2072 req->dma_flag = FALSE;
2073 _nbu2ss_ep_done(ep, req, 0);
2078 ep_dmacnt = _nbu2ss_readl(&preg->EP_REGS[num].EP_LEN_DCNT)
2082 for (i = 0; i < EPC_PLL_LOCK_COUNT; i++) {
2083 dmacnt = _nbu2ss_readl(&preg->EP_DCR[num].EP_DCR1)
2086 if (ep_dmacnt == dmacnt)
2090 _nbu2ss_bitclr(&preg->EP_DCR[num].EP_DCR1, DCR1_EPn_REQEN);
2093 mpkt = ep->ep.maxpacket;
2094 if ((req->div_len % mpkt) == 0)
2095 req->div_len -= mpkt * dmacnt;
2098 if ((req->req.actual % ep->ep.maxpacket) > 0) {
2099 if (req->req.actual == req->div_len) {
2101 req->dma_flag = FALSE;
2102 _nbu2ss_ep_done(ep, req, 0);
2107 req->req.actual += req->div_len;
2109 req->dma_flag = FALSE;
2111 _nbu2ss_epn_out_int(udc, ep, req);
2114 /*-------------------------------------------------------------------------*/
2115 static inline void _nbu2ss_epn_int(struct nbu2ss_udc *udc, u32 epnum)
2120 struct nbu2ss_req *req;
2121 struct nbu2ss_ep *ep = &udc->ep[epnum];
2125 /* Interrupt Status */
2126 status = _nbu2ss_readl(&udc->p_regs->EP_REGS[num].EP_STATUS);
2128 /* Interrupt Clear */
2129 _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_STATUS, ~(u32)status);
2131 req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue);
2133 /* pr_warn("=== %s(%d) req == NULL\n", __func__, epnum); */
2137 if (status & EPn_OUT_END_INT) {
2138 status &= ~EPn_OUT_INT;
2139 _nbu2ss_epn_out_dma_int(udc, ep, req);
2142 if (status & EPn_OUT_INT)
2143 _nbu2ss_epn_out_int(udc, ep, req);
2145 if (status & EPn_IN_END_INT) {
2146 status &= ~EPn_IN_INT;
2147 _nbu2ss_epn_in_dma_int(udc, ep, req);
2150 if (status & EPn_IN_INT)
2151 _nbu2ss_epn_in_int(udc, ep, req);
2154 /*-------------------------------------------------------------------------*/
2155 static inline void _nbu2ss_ep_int(struct nbu2ss_udc *udc, u32 epnum)
2158 _nbu2ss_ep0_int(udc);
2160 _nbu2ss_epn_int(udc, epnum);
2163 /*-------------------------------------------------------------------------*/
2164 static void _nbu2ss_ep0_enable(struct nbu2ss_udc *udc)
2166 _nbu2ss_bitset(&udc->p_regs->EP0_CONTROL, (EP0_AUTO | EP0_BCLR));
2167 _nbu2ss_writel(&udc->p_regs->EP0_INT_ENA, EP0_INT_EN_BIT);
2170 /*-------------------------------------------------------------------------*/
2171 static int _nbu2ss_nuke(struct nbu2ss_udc *udc,
2172 struct nbu2ss_ep *ep,
2175 struct nbu2ss_req *req;
2177 /* Endpoint Disable */
2178 _nbu2ss_epn_exit(udc, ep);
2181 _nbu2ss_ep_dma_exit(udc, ep);
2183 if (list_empty(&ep->queue))
2186 /* called with irqs blocked */
2187 list_for_each_entry(req, &ep->queue, queue) {
2188 _nbu2ss_ep_done(ep, req, status);
2194 /*-------------------------------------------------------------------------*/
2195 static void _nbu2ss_quiesce(struct nbu2ss_udc *udc)
2197 struct nbu2ss_ep *ep;
2199 udc->gadget.speed = USB_SPEED_UNKNOWN;
2201 _nbu2ss_nuke(udc, &udc->ep[0], -ESHUTDOWN);
2204 list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
2205 _nbu2ss_nuke(udc, ep, -ESHUTDOWN);
2209 /*-------------------------------------------------------------------------*/
2210 static int _nbu2ss_pullup(struct nbu2ss_udc *udc, int is_on)
2214 if (udc->vbus_active == 0)
2220 reg_dt = (_nbu2ss_readl(&udc->p_regs->USB_CONTROL)
2221 | PUE2) & ~(u32)CONNECTB;
2223 _nbu2ss_writel(&udc->p_regs->USB_CONTROL, reg_dt);
2228 reg_dt = (_nbu2ss_readl(&udc->p_regs->USB_CONTROL) | CONNECTB)
2231 _nbu2ss_writel(&udc->p_regs->USB_CONTROL, reg_dt);
2232 udc->gadget.speed = USB_SPEED_UNKNOWN;
2238 /*-------------------------------------------------------------------------*/
2239 static void _nbu2ss_fifo_flush(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep)
2241 struct fc_regs *p = udc->p_regs;
2243 if (udc->vbus_active == 0)
2246 if (ep->epnum == 0) {
2248 _nbu2ss_bitset(&p->EP0_CONTROL, EP0_BCLR);
2252 _nbu2ss_ep_dma_abort(udc, ep);
2253 _nbu2ss_bitset(&p->EP_REGS[ep->epnum - 1].EP_CONTROL, EPn_BCLR);
2257 /*-------------------------------------------------------------------------*/
2258 static int _nbu2ss_enable_controller(struct nbu2ss_udc *udc)
2262 if (udc->udc_enabled)
2268 _nbu2ss_bitset(&udc->p_regs->EPCTR, (DIRPD | EPC_RST));
2269 udelay(EPC_RST_DISABLE_TIME); /* 1us wait */
2271 _nbu2ss_bitclr(&udc->p_regs->EPCTR, DIRPD);
2272 mdelay(EPC_DIRPD_DISABLE_TIME); /* 1ms wait */
2274 _nbu2ss_bitclr(&udc->p_regs->EPCTR, EPC_RST);
2276 _nbu2ss_writel(&udc->p_regs->AHBSCTR, WAIT_MODE);
2278 _nbu2ss_writel(&udc->p_regs->AHBMCTR,
2279 HBUSREQ_MODE | HTRANS_MODE | WBURST_TYPE);
2281 while (!(_nbu2ss_readl(&udc->p_regs->EPCTR) & PLL_LOCK)) {
2283 udelay(1); /* 1us wait */
2284 if (waitcnt == EPC_PLL_LOCK_COUNT) {
2285 dev_err(udc->dev, "*** Reset Cancel failed\n");
2290 _nbu2ss_bitset(&udc->p_regs->UTMI_CHARACTER_1, USB_SQUSET);
2292 _nbu2ss_bitset(&udc->p_regs->USB_CONTROL, (INT_SEL | SOF_RCV));
2295 _nbu2ss_ep0_enable(udc);
2297 /* USB Interrupt Enable */
2298 _nbu2ss_bitset(&udc->p_regs->USB_INT_ENA, USB_INT_EN_BIT);
2300 udc->udc_enabled = TRUE;
2305 /*-------------------------------------------------------------------------*/
2306 static void _nbu2ss_reset_controller(struct nbu2ss_udc *udc)
2308 _nbu2ss_bitset(&udc->p_regs->EPCTR, EPC_RST);
2309 _nbu2ss_bitclr(&udc->p_regs->EPCTR, EPC_RST);
2312 /*-------------------------------------------------------------------------*/
2313 static void _nbu2ss_disable_controller(struct nbu2ss_udc *udc)
2315 if (udc->udc_enabled) {
2316 udc->udc_enabled = FALSE;
2317 _nbu2ss_reset_controller(udc);
2318 _nbu2ss_bitset(&udc->p_regs->EPCTR, (DIRPD | EPC_RST));
2322 /*-------------------------------------------------------------------------*/
2323 static inline void _nbu2ss_check_vbus(struct nbu2ss_udc *udc)
2329 mdelay(VBUS_CHATTERING_MDELAY); /* wait (ms) */
2332 reg_dt = gpio_get_value(VBUS_VALUE);
2335 udc->linux_suspended = 0;
2337 _nbu2ss_reset_controller(udc);
2338 dev_info(udc->dev, " ----- VBUS OFF\n");
2340 if (udc->vbus_active == 1) {
2342 udc->vbus_active = 0;
2343 if (udc->usb_suspended) {
2344 udc->usb_suspended = 0;
2345 /* _nbu2ss_reset_controller(udc); */
2347 udc->devstate = USB_STATE_NOTATTACHED;
2349 _nbu2ss_quiesce(udc);
2351 spin_unlock(&udc->lock);
2352 udc->driver->disconnect(&udc->gadget);
2353 spin_lock(&udc->lock);
2356 _nbu2ss_disable_controller(udc);
2359 mdelay(5); /* wait (5ms) */
2360 reg_dt = gpio_get_value(VBUS_VALUE);
2364 dev_info(udc->dev, " ----- VBUS ON\n");
2366 if (udc->linux_suspended)
2369 if (udc->vbus_active == 0) {
2371 udc->vbus_active = 1;
2372 udc->devstate = USB_STATE_POWERED;
2374 nret = _nbu2ss_enable_controller(udc);
2376 _nbu2ss_disable_controller(udc);
2377 udc->vbus_active = 0;
2381 _nbu2ss_pullup(udc, 1);
2383 #ifdef UDC_DEBUG_DUMP
2384 _nbu2ss_dump_register(udc);
2385 #endif /* UDC_DEBUG_DUMP */
2388 if (udc->devstate == USB_STATE_POWERED)
2389 _nbu2ss_pullup(udc, 1);
2394 /*-------------------------------------------------------------------------*/
2395 static inline void _nbu2ss_int_bus_reset(struct nbu2ss_udc *udc)
2397 udc->devstate = USB_STATE_DEFAULT;
2398 udc->remote_wakeup = 0;
2400 _nbu2ss_quiesce(udc);
2402 udc->ep0state = EP0_IDLE;
2405 /*-------------------------------------------------------------------------*/
2406 static inline void _nbu2ss_int_usb_resume(struct nbu2ss_udc *udc)
2408 if (udc->usb_suspended == 1) {
2409 udc->usb_suspended = 0;
2410 if (udc->driver && udc->driver->resume) {
2411 spin_unlock(&udc->lock);
2412 udc->driver->resume(&udc->gadget);
2413 spin_lock(&udc->lock);
2418 /*-------------------------------------------------------------------------*/
2419 static inline void _nbu2ss_int_usb_suspend(struct nbu2ss_udc *udc)
2423 if (udc->usb_suspended == 0) {
2424 reg_dt = gpio_get_value(VBUS_VALUE);
2429 udc->usb_suspended = 1;
2430 if (udc->driver && udc->driver->suspend) {
2431 spin_unlock(&udc->lock);
2432 udc->driver->suspend(&udc->gadget);
2433 spin_lock(&udc->lock);
2436 _nbu2ss_bitset(&udc->p_regs->USB_CONTROL, SUSPEND);
2440 /*-------------------------------------------------------------------------*/
2441 /* VBUS (GPIO153) Interrupt */
2442 static irqreturn_t _nbu2ss_vbus_irq(int irq, void *_udc)
2444 struct nbu2ss_udc *udc = (struct nbu2ss_udc *)_udc;
2446 spin_lock(&udc->lock);
2447 _nbu2ss_check_vbus(udc);
2448 spin_unlock(&udc->lock);
2453 /*-------------------------------------------------------------------------*/
2454 /* Interrupt (udc) */
2455 static irqreturn_t _nbu2ss_udc_irq(int irq, void *_udc)
2457 u8 suspend_flag = 0;
2461 struct nbu2ss_udc *udc = (struct nbu2ss_udc *)_udc;
2462 struct fc_regs *preg = udc->p_regs;
2464 if (gpio_get_value(VBUS_VALUE) == 0) {
2465 _nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW);
2466 _nbu2ss_writel(&preg->USB_INT_ENA, 0);
2470 spin_lock(&udc->lock);
2473 if (gpio_get_value(VBUS_VALUE) == 0) {
2474 _nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW);
2475 _nbu2ss_writel(&preg->USB_INT_ENA, 0);
2478 status = _nbu2ss_readl(&preg->USB_INT_STA);
2483 _nbu2ss_writel(&preg->USB_INT_STA, ~(status & USB_INT_STA_RW));
2485 if (status & USB_RST_INT) {
2487 _nbu2ss_int_bus_reset(udc);
2490 if (status & RSUM_INT) {
2492 _nbu2ss_int_usb_resume(udc);
2495 if (status & SPND_INT) {
2500 if (status & EPn_INT) {
2502 int_bit = status >> 8;
2504 for (epnum = 0; epnum < NUM_ENDPOINTS; epnum++) {
2507 _nbu2ss_ep_int(udc, epnum);
2518 _nbu2ss_int_usb_suspend(udc);
2520 spin_unlock(&udc->lock);
2525 /*-------------------------------------------------------------------------*/
2527 static int nbu2ss_ep_enable(
2529 const struct usb_endpoint_descriptor *desc)
2532 unsigned long flags;
2534 struct nbu2ss_ep *ep;
2535 struct nbu2ss_udc *udc;
2537 if ((!_ep) || (!desc)) {
2538 pr_err(" *** %s, bad param\n", __func__);
2542 ep = container_of(_ep, struct nbu2ss_ep, ep);
2543 if ((!ep) || (!ep->udc)) {
2544 pr_err(" *** %s, ep == NULL !!\n", __func__);
2548 ep_type = usb_endpoint_type(desc);
2549 if ((ep_type == USB_ENDPOINT_XFER_CONTROL)
2550 || (ep_type == USB_ENDPOINT_XFER_ISOC)) {
2552 pr_err(" *** %s, bat bmAttributes\n", __func__);
2557 if (udc->vbus_active == 0)
2561 || (udc->gadget.speed == USB_SPEED_UNKNOWN)) {
2563 dev_err(ep->udc->dev, " *** %s, udc !!\n", __func__);
2567 spin_lock_irqsave(&udc->lock, flags);
2570 ep->epnum = usb_endpoint_num(desc);
2571 ep->direct = desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK;
2572 ep->ep_type = ep_type;
2575 ep->stalled = FALSE;
2577 ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
2580 _nbu2ss_ep_dma_init(udc, ep);
2582 /* Endpoint setting */
2583 _nbu2ss_ep_init(udc, ep);
2585 spin_unlock_irqrestore(&udc->lock, flags);
2590 /*-------------------------------------------------------------------------*/
2591 static int nbu2ss_ep_disable(struct usb_ep *_ep)
2593 struct nbu2ss_ep *ep;
2594 struct nbu2ss_udc *udc;
2595 unsigned long flags;
2598 pr_err(" *** %s, bad param\n", __func__);
2602 ep = container_of(_ep, struct nbu2ss_ep, ep);
2603 if ((!ep) || (!ep->udc)) {
2604 pr_err("udc: *** %s, ep == NULL !!\n", __func__);
2609 if (udc->vbus_active == 0)
2612 spin_lock_irqsave(&udc->lock, flags);
2613 _nbu2ss_nuke(udc, ep, -EINPROGRESS); /* dequeue request */
2614 spin_unlock_irqrestore(&udc->lock, flags);
2619 /*-------------------------------------------------------------------------*/
2620 static struct usb_request *nbu2ss_ep_alloc_request(
2624 struct nbu2ss_req *req;
2626 req = kzalloc(sizeof(*req), gfp_flags);
2631 req->req.dma = DMA_ADDR_INVALID;
2633 INIT_LIST_HEAD(&req->queue);
2638 /*-------------------------------------------------------------------------*/
2639 static void nbu2ss_ep_free_request(
2641 struct usb_request *_req)
2643 struct nbu2ss_req *req;
2646 req = container_of(_req, struct nbu2ss_req, req);
2652 /*-------------------------------------------------------------------------*/
2653 static int nbu2ss_ep_queue(
2655 struct usb_request *_req,
2658 struct nbu2ss_req *req;
2659 struct nbu2ss_ep *ep;
2660 struct nbu2ss_udc *udc;
2661 unsigned long flags;
2663 int result = -EINVAL;
2665 /* catch various bogus parameters */
2666 if ((!_ep) || (!_req)) {
2668 pr_err("udc: %s --- _ep == NULL\n", __func__);
2671 pr_err("udc: %s --- _req == NULL\n", __func__);
2676 req = container_of(_req, struct nbu2ss_req, req);
2678 (!_req->complete || !_req->buf
2679 || !list_empty(&req->queue))) {
2681 if (!_req->complete)
2682 pr_err("udc: %s --- !_req->complete\n", __func__);
2685 pr_err("udc:%s --- !_req->buf\n", __func__);
2687 if (!list_empty(&req->queue))
2688 pr_err("%s --- !list_empty(&req->queue)\n", __func__);
2693 ep = container_of(_ep, struct nbu2ss_ep, ep);
2696 if (udc->vbus_active == 0) {
2697 dev_info(udc->dev, "Can't ep_queue (VBUS OFF)\n");
2701 if (unlikely(!udc->driver)) {
2702 dev_err(udc->dev, "%s, bogus device state %p\n", __func__,
2707 spin_lock_irqsave(&udc->lock, flags);
2710 if ((uintptr_t)req->req.buf & 0x3)
2711 req->unaligned = TRUE;
2713 req->unaligned = FALSE;
2715 if (req->unaligned) {
2717 ep->virt_buf = (u8 *)dma_alloc_coherent(
2719 &ep->phys_buf, GFP_ATOMIC | GFP_DMA);
2720 if (ep->epnum > 0) {
2721 if (ep->direct == USB_DIR_IN)
2722 memcpy(ep->virt_buf, req->req.buf,
2727 if ((ep->epnum > 0) && (ep->direct == USB_DIR_OUT) &&
2728 (req->req.dma != 0))
2729 _nbu2ss_dma_map_single(udc, ep, req, USB_DIR_OUT);
2732 _req->status = -EINPROGRESS;
2735 bflag = list_empty(&ep->queue);
2736 list_add_tail(&req->queue, &ep->queue);
2738 if (bflag && !ep->stalled) {
2740 result = _nbu2ss_start_transfer(udc, ep, req, FALSE);
2742 dev_err(udc->dev, " *** %s, result = %d\n", __func__,
2744 list_del(&req->queue);
2745 } else if ((ep->epnum > 0) && (ep->direct == USB_DIR_OUT)) {
2747 if (req->req.length < 4 &&
2748 req->req.length == req->req.actual)
2750 if (req->req.length == req->req.actual)
2752 _nbu2ss_ep_done(ep, req, result);
2756 spin_unlock_irqrestore(&udc->lock, flags);
2761 /*-------------------------------------------------------------------------*/
2762 static int nbu2ss_ep_dequeue(
2764 struct usb_request *_req)
2766 struct nbu2ss_req *req;
2767 struct nbu2ss_ep *ep;
2768 struct nbu2ss_udc *udc;
2769 unsigned long flags;
2771 /* catch various bogus parameters */
2772 if ((!_ep) || (!_req)) {
2773 /* pr_err("%s, bad param(1)\n", __func__); */
2777 ep = container_of(_ep, struct nbu2ss_ep, ep);
2779 pr_err("%s, ep == NULL !!\n", __func__);
2787 spin_lock_irqsave(&udc->lock, flags);
2789 /* make sure it's actually queued on this endpoint */
2790 list_for_each_entry(req, &ep->queue, queue) {
2791 if (&req->req == _req)
2794 if (&req->req != _req) {
2795 spin_unlock_irqrestore(&udc->lock, flags);
2796 pr_debug("%s no queue(EINVAL)\n", __func__);
2800 _nbu2ss_ep_done(ep, req, -ECONNRESET);
2802 spin_unlock_irqrestore(&udc->lock, flags);
2807 /*-------------------------------------------------------------------------*/
2808 static int nbu2ss_ep_set_halt(struct usb_ep *_ep, int value)
2811 unsigned long flags;
2813 struct nbu2ss_ep *ep;
2814 struct nbu2ss_udc *udc;
2817 pr_err("%s, bad param\n", __func__);
2821 ep = container_of(_ep, struct nbu2ss_ep, ep);
2823 pr_err("%s, bad ep\n", __func__);
2829 dev_err(ep->udc->dev, " *** %s, bad udc\n", __func__);
2833 spin_lock_irqsave(&udc->lock, flags);
2835 ep_adrs = ep->epnum | ep->direct;
2837 _nbu2ss_set_endpoint_stall(udc, ep_adrs, value);
2838 ep->stalled = FALSE;
2840 if (list_empty(&ep->queue))
2841 _nbu2ss_epn_set_stall(udc, ep);
2849 spin_unlock_irqrestore(&udc->lock, flags);
2854 static int nbu2ss_ep_set_wedge(struct usb_ep *_ep)
2856 return nbu2ss_ep_set_halt(_ep, 1);
2859 /*-------------------------------------------------------------------------*/
2860 static int nbu2ss_ep_fifo_status(struct usb_ep *_ep)
2863 struct nbu2ss_ep *ep;
2864 struct nbu2ss_udc *udc;
2865 unsigned long flags;
2866 struct fc_regs *preg;
2869 pr_err("%s, bad param\n", __func__);
2873 ep = container_of(_ep, struct nbu2ss_ep, ep);
2875 pr_err("%s, bad ep\n", __func__);
2881 dev_err(ep->udc->dev, "%s, bad udc\n", __func__);
2887 data = gpio_get_value(VBUS_VALUE);
2891 spin_lock_irqsave(&udc->lock, flags);
2893 if (ep->epnum == 0) {
2894 data = _nbu2ss_readl(&preg->EP0_LENGTH) & EP0_LDATA;
2897 data = _nbu2ss_readl(&preg->EP_REGS[ep->epnum-1].EP_LEN_DCNT)
2901 spin_unlock_irqrestore(&udc->lock, flags);
2906 /*-------------------------------------------------------------------------*/
2907 static void nbu2ss_ep_fifo_flush(struct usb_ep *_ep)
2910 struct nbu2ss_ep *ep;
2911 struct nbu2ss_udc *udc;
2912 unsigned long flags;
2915 pr_err("udc: %s, bad param\n", __func__);
2919 ep = container_of(_ep, struct nbu2ss_ep, ep);
2921 pr_err("udc: %s, bad ep\n", __func__);
2927 dev_err(ep->udc->dev, "%s, bad udc\n", __func__);
2931 data = gpio_get_value(VBUS_VALUE);
2935 spin_lock_irqsave(&udc->lock, flags);
2936 _nbu2ss_fifo_flush(udc, ep);
2937 spin_unlock_irqrestore(&udc->lock, flags);
2940 /*-------------------------------------------------------------------------*/
2941 static struct usb_ep_ops nbu2ss_ep_ops = {
2942 .enable = nbu2ss_ep_enable,
2943 .disable = nbu2ss_ep_disable,
2945 .alloc_request = nbu2ss_ep_alloc_request,
2946 .free_request = nbu2ss_ep_free_request,
2948 .queue = nbu2ss_ep_queue,
2949 .dequeue = nbu2ss_ep_dequeue,
2951 .set_halt = nbu2ss_ep_set_halt,
2952 .set_wedge = nbu2ss_ep_set_wedge,
2954 .fifo_status = nbu2ss_ep_fifo_status,
2955 .fifo_flush = nbu2ss_ep_fifo_flush,
2958 /*-------------------------------------------------------------------------*/
2959 /* usb_gadget_ops */
2961 /*-------------------------------------------------------------------------*/
2962 static int nbu2ss_gad_get_frame(struct usb_gadget *pgadget)
2965 struct nbu2ss_udc *udc;
2968 pr_err("udc: %s, bad param\n", __func__);
2972 udc = container_of(pgadget, struct nbu2ss_udc, gadget);
2974 dev_err(&pgadget->dev, "%s, udc == NULL\n", __func__);
2978 data = gpio_get_value(VBUS_VALUE);
2982 data = _nbu2ss_readl(&udc->p_regs->USB_ADDRESS) & FRAME;
2987 /*-------------------------------------------------------------------------*/
2988 static int nbu2ss_gad_wakeup(struct usb_gadget *pgadget)
2993 struct nbu2ss_udc *udc;
2996 pr_err("%s, bad param\n", __func__);
3000 udc = container_of(pgadget, struct nbu2ss_udc, gadget);
3002 dev_err(&pgadget->dev, "%s, udc == NULL\n", __func__);
3006 data = gpio_get_value(VBUS_VALUE);
3008 dev_warn(&pgadget->dev, "VBUS LEVEL = %d\n", data);
3012 _nbu2ss_bitset(&udc->p_regs->EPCTR, PLL_RESUME);
3014 for (i = 0; i < EPC_PLL_LOCK_COUNT; i++) {
3015 data = _nbu2ss_readl(&udc->p_regs->EPCTR);
3017 if (data & PLL_LOCK)
3021 _nbu2ss_bitclr(&udc->p_regs->EPCTR, PLL_RESUME);
3026 /*-------------------------------------------------------------------------*/
3027 static int nbu2ss_gad_set_selfpowered(struct usb_gadget *pgadget,
3030 struct nbu2ss_udc *udc;
3031 unsigned long flags;
3034 pr_err("%s, bad param\n", __func__);
3038 udc = container_of(pgadget, struct nbu2ss_udc, gadget);
3040 spin_lock_irqsave(&udc->lock, flags);
3041 pgadget->is_selfpowered = (is_selfpowered != 0);
3042 spin_unlock_irqrestore(&udc->lock, flags);
3047 /*-------------------------------------------------------------------------*/
3048 static int nbu2ss_gad_vbus_session(struct usb_gadget *pgadget, int is_active)
3053 /*-------------------------------------------------------------------------*/
3054 static int nbu2ss_gad_vbus_draw(struct usb_gadget *pgadget, unsigned mA)
3056 struct nbu2ss_udc *udc;
3057 unsigned long flags;
3060 pr_err("%s, bad param\n", __func__);
3064 udc = container_of(pgadget, struct nbu2ss_udc, gadget);
3066 spin_lock_irqsave(&udc->lock, flags);
3068 spin_unlock_irqrestore(&udc->lock, flags);
3073 /*-------------------------------------------------------------------------*/
3074 static int nbu2ss_gad_pullup(struct usb_gadget *pgadget, int is_on)
3076 struct nbu2ss_udc *udc;
3077 unsigned long flags;
3080 pr_err("%s, bad param\n", __func__);
3084 udc = container_of(pgadget, struct nbu2ss_udc, gadget);
3087 pr_warn("%s, Not Regist Driver\n", __func__);
3091 if (udc->vbus_active == 0)
3094 spin_lock_irqsave(&udc->lock, flags);
3095 _nbu2ss_pullup(udc, is_on);
3096 spin_unlock_irqrestore(&udc->lock, flags);
3101 /*-------------------------------------------------------------------------*/
3102 static int nbu2ss_gad_ioctl(
3103 struct usb_gadget *pgadget,
3105 unsigned long param)
3110 static const struct usb_gadget_ops nbu2ss_gadget_ops = {
3111 .get_frame = nbu2ss_gad_get_frame,
3112 .wakeup = nbu2ss_gad_wakeup,
3113 .set_selfpowered = nbu2ss_gad_set_selfpowered,
3114 .vbus_session = nbu2ss_gad_vbus_session,
3115 .vbus_draw = nbu2ss_gad_vbus_draw,
3116 .pullup = nbu2ss_gad_pullup,
3117 .ioctl = nbu2ss_gad_ioctl,
3120 static const struct {
3122 const struct usb_ep_caps caps;
3123 } ep_info[NUM_ENDPOINTS] = {
3124 #define EP_INFO(_name, _caps) \
3131 USB_EP_CAPS(USB_EP_CAPS_TYPE_CONTROL, USB_EP_CAPS_DIR_ALL)),
3133 USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)),
3135 USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)),
3136 EP_INFO("ep3in-int",
3137 USB_EP_CAPS(USB_EP_CAPS_TYPE_INT, USB_EP_CAPS_DIR_IN)),
3139 USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_ALL)),
3141 USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_ALL)),
3143 USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)),
3145 USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)),
3146 EP_INFO("ep8in-int",
3147 USB_EP_CAPS(USB_EP_CAPS_TYPE_INT, USB_EP_CAPS_DIR_IN)),
3149 USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_ALL)),
3151 USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_ALL)),
3153 USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)),
3155 USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)),
3156 EP_INFO("epdin-int",
3157 USB_EP_CAPS(USB_EP_CAPS_TYPE_INT, USB_EP_CAPS_DIR_IN)),
3162 /*-------------------------------------------------------------------------*/
3163 static void __init nbu2ss_drv_ep_init(struct nbu2ss_udc *udc)
3167 INIT_LIST_HEAD(&udc->gadget.ep_list);
3168 udc->gadget.ep0 = &udc->ep[0].ep;
3170 for (i = 0; i < NUM_ENDPOINTS; i++) {
3171 struct nbu2ss_ep *ep = &udc->ep[i];
3176 ep->ep.driver_data = NULL;
3177 ep->ep.name = ep_info[i].name;
3178 ep->ep.caps = ep_info[i].caps;
3179 ep->ep.ops = &nbu2ss_ep_ops;
3181 usb_ep_set_maxpacket_limit(&ep->ep,
3182 i == 0 ? EP0_PACKETSIZE
3185 list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
3186 INIT_LIST_HEAD(&ep->queue);
3189 list_del_init(&udc->ep[0].ep.ep_list);
3192 /*-------------------------------------------------------------------------*/
3193 /* platform_driver */
3194 static int __init nbu2ss_drv_contest_init(
3195 struct platform_device *pdev,
3196 struct nbu2ss_udc *udc)
3198 spin_lock_init(&udc->lock);
3199 udc->dev = &pdev->dev;
3201 udc->gadget.is_selfpowered = 1;
3202 udc->devstate = USB_STATE_NOTATTACHED;
3206 udc->pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
3209 nbu2ss_drv_ep_init(udc);
3212 udc->gadget.ops = &nbu2ss_gadget_ops;
3213 udc->gadget.ep0 = &udc->ep[0].ep;
3214 udc->gadget.speed = USB_SPEED_UNKNOWN;
3215 udc->gadget.name = driver_name;
3216 /* udc->gadget.is_dualspeed = 1; */
3218 device_initialize(&udc->gadget.dev);
3220 dev_set_name(&udc->gadget.dev, "gadget");
3221 udc->gadget.dev.parent = &pdev->dev;
3222 udc->gadget.dev.dma_mask = pdev->dev.dma_mask;
3228 * probe - binds to the platform device
3230 static int nbu2ss_drv_probe(struct platform_device *pdev)
3232 int status = -ENODEV;
3233 struct nbu2ss_udc *udc;
3236 void __iomem *mmio_base;
3238 udc = &udc_controller;
3239 memset(udc, 0, sizeof(struct nbu2ss_udc));
3241 platform_set_drvdata(pdev, udc);
3243 /* require I/O memory and IRQ to be provided as resources */
3244 r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
3245 mmio_base = devm_ioremap_resource(&pdev->dev, r);
3246 if (IS_ERR(mmio_base))
3247 return PTR_ERR(mmio_base);
3249 irq = platform_get_irq(pdev, 0);
3251 dev_err(&pdev->dev, "failed to get IRQ\n");
3254 status = devm_request_irq(&pdev->dev, irq, _nbu2ss_udc_irq,
3255 0, driver_name, udc);
3258 udc->p_regs = (struct fc_regs *)mmio_base;
3260 /* USB Function Controller Interrupt */
3262 dev_err(udc->dev, "request_irq(USB_UDC_IRQ_1) failed\n");
3266 /* Driver Initialization */
3267 status = nbu2ss_drv_contest_init(pdev, udc);
3273 /* VBUS Interrupt */
3274 irq_set_irq_type(INT_VBUS, IRQ_TYPE_EDGE_BOTH);
3275 status = request_irq(INT_VBUS,
3276 _nbu2ss_vbus_irq, IRQF_SHARED, driver_name, udc);
3279 dev_err(udc->dev, "request_irq(INT_VBUS) failed\n");
3286 /*-------------------------------------------------------------------------*/
3287 static void nbu2ss_drv_shutdown(struct platform_device *pdev)
3289 struct nbu2ss_udc *udc;
3291 udc = platform_get_drvdata(pdev);
3295 _nbu2ss_disable_controller(udc);
3298 /*-------------------------------------------------------------------------*/
3299 static int nbu2ss_drv_suspend(struct platform_device *pdev, pm_message_t state)
3301 struct nbu2ss_udc *udc;
3303 udc = platform_get_drvdata(pdev);
3307 if (udc->vbus_active) {
3308 udc->vbus_active = 0;
3309 udc->devstate = USB_STATE_NOTATTACHED;
3310 udc->linux_suspended = 1;
3312 if (udc->usb_suspended) {
3313 udc->usb_suspended = 0;
3314 _nbu2ss_reset_controller(udc);
3317 _nbu2ss_quiesce(udc);
3319 _nbu2ss_disable_controller(udc);
3324 /*-------------------------------------------------------------------------*/
3325 static int nbu2ss_drv_resume(struct platform_device *pdev)
3328 struct nbu2ss_udc *udc;
3330 udc = platform_get_drvdata(pdev);
3334 data = gpio_get_value(VBUS_VALUE);
3336 udc->vbus_active = 1;
3337 udc->devstate = USB_STATE_POWERED;
3338 _nbu2ss_enable_controller(udc);
3339 _nbu2ss_pullup(udc, 1);
3342 udc->linux_suspended = 0;
3347 static struct platform_driver udc_driver = {
3348 .probe = nbu2ss_drv_probe,
3349 .shutdown = nbu2ss_drv_shutdown,
3350 .suspend = nbu2ss_drv_suspend,
3351 .resume = nbu2ss_drv_resume,
3353 .name = driver_name,
3354 .suppress_bind_attrs = true,
3358 builtin_platform_driver(udc_driver);