2 * driver/usb/gadget/fsl_qe_udc.c
4 * Copyright (c) 2006-2008 Freescale Semiconductor, Inc. All rights reserved.
6 * Xie Xiaobo <X.Xie@freescale.com>
7 * Li Yang <leoli@freescale.com>
8 * Based on bareboard code from Shlomi Gridish.
11 * Freescle QE/CPM USB Pheripheral Controller Driver
12 * The controller can be found on MPC8360, MPC8272, and etc.
13 * MPC8360 Rev 1.1 may need QE mircocode update
15 * This program is free software; you can redistribute it and/or modify it
16 * under the terms of the GNU General Public License as published by the
17 * Free Software Foundation; either version 2 of the License, or (at your
18 * option) any later version.
23 #include <linux/module.h>
24 #include <linux/kernel.h>
25 #include <linux/init.h>
26 #include <linux/ioport.h>
27 #include <linux/types.h>
28 #include <linux/errno.h>
29 #include <linux/err.h>
30 #include <linux/slab.h>
31 #include <linux/list.h>
32 #include <linux/interrupt.h>
34 #include <linux/moduleparam.h>
35 #include <linux/of_address.h>
36 #include <linux/of_platform.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/usb/ch9.h>
39 #include <linux/usb/gadget.h>
40 #include <linux/usb/otg.h>
45 #include "fsl_qe_udc.h"
47 #define DRIVER_DESC "Freescale QE/CPM USB Device Controller driver"
48 #define DRIVER_AUTHOR "Xie XiaoBo"
49 #define DRIVER_VERSION "1.0"
51 #define DMA_ADDR_INVALID (~(dma_addr_t)0)
53 static const char driver_name[] = "fsl_qe_udc";
54 static const char driver_desc[] = DRIVER_DESC;
56 /*ep name is important in gadget, it should obey the convention of ep_match()*/
57 static const char *const ep_name[] = {
58 "ep0-control", /* everyone has ep0 */
59 /* 3 configurable endpoints */
65 static struct usb_endpoint_descriptor qe_ep0_desc = {
66 .bLength = USB_DT_ENDPOINT_SIZE,
67 .bDescriptorType = USB_DT_ENDPOINT,
69 .bEndpointAddress = 0,
70 .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
71 .wMaxPacketSize = USB_MAX_CTRL_PAYLOAD,
74 /* it is initialized in probe() */
75 static struct qe_udc *udc_controller;
77 /********************************************************************
78 * Internal Used Function Start
79 ********************************************************************/
80 /*-----------------------------------------------------------------
81 * done() - retire a request; caller blocked irqs
82 *--------------------------------------------------------------*/
83 static void done(struct qe_ep *ep, struct qe_req *req, int status)
85 struct qe_udc *udc = ep->udc;
86 unsigned char stopped = ep->stopped;
88 /* the req->queue pointer is used by ep_queue() func, in which
89 * the request will be added into a udc_ep->queue 'd tail
90 * so here the req will be dropped from the ep->queue
92 list_del_init(&req->queue);
94 /* req.status should be set as -EINPROGRESS in ep_queue() */
95 if (req->req.status == -EINPROGRESS)
96 req->req.status = status;
98 status = req->req.status;
101 dma_unmap_single(udc->gadget.dev.parent,
102 req->req.dma, req->req.length,
106 req->req.dma = DMA_ADDR_INVALID;
109 dma_sync_single_for_cpu(udc->gadget.dev.parent,
110 req->req.dma, req->req.length,
115 if (status && (status != -ESHUTDOWN))
116 dev_vdbg(udc->dev, "complete %s req %p stat %d len %u/%u\n",
117 ep->ep.name, &req->req, status,
118 req->req.actual, req->req.length);
120 /* don't modify queue heads during completion callback */
122 spin_unlock(&udc->lock);
124 /* this complete() should a func implemented by gadget layer,
125 * eg fsg->bulk_in_complete() */
126 if (req->req.complete)
127 req->req.complete(&ep->ep, &req->req);
129 spin_lock(&udc->lock);
131 ep->stopped = stopped;
134 /*-----------------------------------------------------------------
135 * nuke(): delete all requests related to this ep
136 *--------------------------------------------------------------*/
137 static void nuke(struct qe_ep *ep, int status)
139 /* Whether this eq has request linked */
140 while (!list_empty(&ep->queue)) {
141 struct qe_req *req = NULL;
142 req = list_entry(ep->queue.next, struct qe_req, queue);
144 done(ep, req, status);
148 /*---------------------------------------------------------------------------*
149 * USB and Endpoint manipulate process, include parameter and register *
150 *---------------------------------------------------------------------------*/
151 /* @value: 1--set stall 0--clean stall */
152 static int qe_eprx_stall_change(struct qe_ep *ep, int value)
155 u8 epnum = ep->epnum;
156 struct qe_udc *udc = ep->udc;
158 tem_usep = in_be16(&udc->usb_regs->usb_usep[epnum]);
159 tem_usep = tem_usep & ~USB_RHS_MASK;
161 tem_usep |= USB_RHS_STALL;
162 else if (ep->dir == USB_DIR_IN)
163 tem_usep |= USB_RHS_IGNORE_OUT;
165 out_be16(&udc->usb_regs->usb_usep[epnum], tem_usep);
169 static int qe_eptx_stall_change(struct qe_ep *ep, int value)
172 u8 epnum = ep->epnum;
173 struct qe_udc *udc = ep->udc;
175 tem_usep = in_be16(&udc->usb_regs->usb_usep[epnum]);
176 tem_usep = tem_usep & ~USB_THS_MASK;
178 tem_usep |= USB_THS_STALL;
179 else if (ep->dir == USB_DIR_OUT)
180 tem_usep |= USB_THS_IGNORE_IN;
182 out_be16(&udc->usb_regs->usb_usep[epnum], tem_usep);
187 static int qe_ep0_stall(struct qe_udc *udc)
189 qe_eptx_stall_change(&udc->eps[0], 1);
190 qe_eprx_stall_change(&udc->eps[0], 1);
191 udc_controller->ep0_state = WAIT_FOR_SETUP;
192 udc_controller->ep0_dir = 0;
196 static int qe_eprx_nack(struct qe_ep *ep)
198 u8 epnum = ep->epnum;
199 struct qe_udc *udc = ep->udc;
201 if (ep->state == EP_STATE_IDLE) {
202 /* Set the ep's nack */
203 clrsetbits_be16(&udc->usb_regs->usb_usep[epnum],
204 USB_RHS_MASK, USB_RHS_NACK);
206 /* Mask Rx and Busy interrupts */
207 clrbits16(&udc->usb_regs->usb_usbmr,
208 (USB_E_RXB_MASK | USB_E_BSY_MASK));
210 ep->state = EP_STATE_NACK;
215 static int qe_eprx_normal(struct qe_ep *ep)
217 struct qe_udc *udc = ep->udc;
219 if (ep->state == EP_STATE_NACK) {
220 clrsetbits_be16(&udc->usb_regs->usb_usep[ep->epnum],
221 USB_RTHS_MASK, USB_THS_IGNORE_IN);
223 /* Unmask RX interrupts */
224 out_be16(&udc->usb_regs->usb_usber,
225 USB_E_BSY_MASK | USB_E_RXB_MASK);
226 setbits16(&udc->usb_regs->usb_usbmr,
227 (USB_E_RXB_MASK | USB_E_BSY_MASK));
229 ep->state = EP_STATE_IDLE;
236 static int qe_ep_cmd_stoptx(struct qe_ep *ep)
238 if (ep->udc->soc_type == PORT_CPM)
239 cpm_command(CPM_USB_STOP_TX | (ep->epnum << CPM_USB_EP_SHIFT),
240 CPM_USB_STOP_TX_OPCODE);
242 qe_issue_cmd(QE_USB_STOP_TX, QE_CR_SUBBLOCK_USB,
248 static int qe_ep_cmd_restarttx(struct qe_ep *ep)
250 if (ep->udc->soc_type == PORT_CPM)
251 cpm_command(CPM_USB_RESTART_TX | (ep->epnum <<
252 CPM_USB_EP_SHIFT), CPM_USB_RESTART_TX_OPCODE);
254 qe_issue_cmd(QE_USB_RESTART_TX, QE_CR_SUBBLOCK_USB,
260 static int qe_ep_flushtxfifo(struct qe_ep *ep)
262 struct qe_udc *udc = ep->udc;
267 qe_ep_cmd_stoptx(ep);
268 out_8(&udc->usb_regs->usb_uscom,
269 USB_CMD_FLUSH_FIFO | (USB_CMD_EP_MASK & (ep->epnum)));
270 out_be16(&udc->ep_param[i]->tbptr, in_be16(&udc->ep_param[i]->tbase));
271 out_be32(&udc->ep_param[i]->tstate, 0);
272 out_be16(&udc->ep_param[i]->tbcnt, 0);
274 ep->c_txbd = ep->txbase;
275 ep->n_txbd = ep->txbase;
276 qe_ep_cmd_restarttx(ep);
280 static int qe_ep_filltxfifo(struct qe_ep *ep)
282 struct qe_udc *udc = ep->udc;
284 out_8(&udc->usb_regs->usb_uscom,
285 USB_CMD_STR_FIFO | (USB_CMD_EP_MASK & (ep->epnum)));
289 static int qe_epbds_reset(struct qe_udc *udc, int pipe_num)
293 struct qe_bd __iomem *bd;
296 ep = &udc->eps[pipe_num];
298 if (ep->dir == USB_DIR_OUT)
299 bdring_len = USB_BDRING_LEN_RX;
301 bdring_len = USB_BDRING_LEN;
304 for (i = 0; i < (bdring_len - 1); i++) {
305 out_be32((u32 __iomem *)bd, R_E | R_I);
308 out_be32((u32 __iomem *)bd, R_E | R_I | R_W);
311 for (i = 0; i < USB_BDRING_LEN_TX - 1; i++) {
312 out_be32(&bd->buf, 0);
313 out_be32((u32 __iomem *)bd, 0);
316 out_be32((u32 __iomem *)bd, T_W);
321 static int qe_ep_reset(struct qe_udc *udc, int pipe_num)
326 ep = &udc->eps[pipe_num];
327 tmpusep = in_be16(&udc->usb_regs->usb_usep[pipe_num]);
328 tmpusep &= ~USB_RTHS_MASK;
332 qe_ep_flushtxfifo(ep);
335 tmpusep |= USB_THS_IGNORE_IN;
338 qe_ep_flushtxfifo(ep);
339 tmpusep |= USB_RHS_IGNORE_OUT;
344 out_be16(&udc->usb_regs->usb_usep[pipe_num], tmpusep);
346 qe_epbds_reset(udc, pipe_num);
351 static int qe_ep_toggledata01(struct qe_ep *ep)
357 static int qe_ep_bd_init(struct qe_udc *udc, unsigned char pipe_num)
359 struct qe_ep *ep = &udc->eps[pipe_num];
360 unsigned long tmp_addr = 0;
361 struct usb_ep_para __iomem *epparam;
363 struct qe_bd __iomem *bd;
366 if (ep->dir == USB_DIR_OUT)
367 bdring_len = USB_BDRING_LEN_RX;
369 bdring_len = USB_BDRING_LEN;
371 epparam = udc->ep_param[pipe_num];
372 /* alloc multi-ram for BD rings and set the ep parameters */
373 tmp_addr = cpm_muram_alloc(sizeof(struct qe_bd) * (bdring_len +
374 USB_BDRING_LEN_TX), QE_ALIGNMENT_OF_BD);
375 if (IS_ERR_VALUE(tmp_addr))
378 out_be16(&epparam->rbase, (u16)tmp_addr);
379 out_be16(&epparam->tbase, (u16)(tmp_addr +
380 (sizeof(struct qe_bd) * bdring_len)));
382 out_be16(&epparam->rbptr, in_be16(&epparam->rbase));
383 out_be16(&epparam->tbptr, in_be16(&epparam->tbase));
385 ep->rxbase = cpm_muram_addr(tmp_addr);
386 ep->txbase = cpm_muram_addr(tmp_addr + (sizeof(struct qe_bd)
388 ep->n_rxbd = ep->rxbase;
389 ep->e_rxbd = ep->rxbase;
390 ep->n_txbd = ep->txbase;
391 ep->c_txbd = ep->txbase;
392 ep->data01 = 0; /* data0 */
394 /* Init TX and RX bds */
396 for (i = 0; i < bdring_len - 1; i++) {
397 out_be32(&bd->buf, 0);
398 out_be32((u32 __iomem *)bd, 0);
401 out_be32(&bd->buf, 0);
402 out_be32((u32 __iomem *)bd, R_W);
405 for (i = 0; i < USB_BDRING_LEN_TX - 1; i++) {
406 out_be32(&bd->buf, 0);
407 out_be32((u32 __iomem *)bd, 0);
410 out_be32(&bd->buf, 0);
411 out_be32((u32 __iomem *)bd, T_W);
416 static int qe_ep_rxbd_update(struct qe_ep *ep)
421 struct qe_bd __iomem *bd;
422 unsigned int bdring_len;
424 if (ep->rxbase == NULL)
429 ep->rxframe = kmalloc(sizeof(*ep->rxframe), GFP_ATOMIC);
430 if (ep->rxframe == NULL) {
431 dev_err(ep->udc->dev, "malloc rxframe failed\n");
435 qe_frame_init(ep->rxframe);
437 if (ep->dir == USB_DIR_OUT)
438 bdring_len = USB_BDRING_LEN_RX;
440 bdring_len = USB_BDRING_LEN;
442 size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (bdring_len + 1);
443 ep->rxbuffer = kzalloc(size, GFP_ATOMIC);
444 if (ep->rxbuffer == NULL) {
445 dev_err(ep->udc->dev, "malloc rxbuffer failed,size=%d\n",
451 ep->rxbuf_d = virt_to_phys((void *)ep->rxbuffer);
452 if (ep->rxbuf_d == DMA_ADDR_INVALID) {
453 ep->rxbuf_d = dma_map_single(udc_controller->gadget.dev.parent,
459 dma_sync_single_for_device(udc_controller->gadget.dev.parent,
465 size = ep->ep.maxpacket + USB_CRC_SIZE + 2;
467 tmp = (u32)(((tmp >> 2) << 2) + 4);
469 for (i = 0; i < bdring_len - 1; i++) {
470 out_be32(&bd->buf, tmp);
471 out_be32((u32 __iomem *)bd, (R_E | R_I));
475 out_be32(&bd->buf, tmp);
476 out_be32((u32 __iomem *)bd, (R_E | R_I | R_W));
481 static int qe_ep_register_init(struct qe_udc *udc, unsigned char pipe_num)
483 struct qe_ep *ep = &udc->eps[pipe_num];
484 struct usb_ep_para __iomem *epparam;
489 epparam = udc->ep_param[pipe_num];
492 logepnum = (ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
493 usep |= (logepnum << USB_EPNUM_SHIFT);
495 switch (ep->desc->bmAttributes & 0x03) {
496 case USB_ENDPOINT_XFER_BULK:
497 usep |= USB_TRANS_BULK;
499 case USB_ENDPOINT_XFER_ISOC:
500 usep |= USB_TRANS_ISO;
502 case USB_ENDPOINT_XFER_INT:
503 usep |= USB_TRANS_INT;
506 usep |= USB_TRANS_CTR;
512 usep |= USB_THS_IGNORE_IN;
515 usep |= USB_RHS_IGNORE_OUT;
520 out_be16(&udc->usb_regs->usb_usep[pipe_num], usep);
523 out_8(&epparam->rbmr, rtfcr);
524 out_8(&epparam->tbmr, rtfcr);
526 tmp = (u16)(ep->ep.maxpacket + USB_CRC_SIZE);
527 /* MRBLR must be divisble by 4 */
528 tmp = (u16)(((tmp >> 2) << 2) + 4);
529 out_be16(&epparam->mrblr, tmp);
534 static int qe_ep_init(struct qe_udc *udc,
535 unsigned char pipe_num,
536 const struct usb_endpoint_descriptor *desc)
538 struct qe_ep *ep = &udc->eps[pipe_num];
543 max = le16_to_cpu(desc->wMaxPacketSize);
545 /* check the max package size validate for this endpoint */
546 /* Refer to USB2.0 spec table 9-13,
549 switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
550 case USB_ENDPOINT_XFER_BULK:
551 if (strstr(ep->ep.name, "-iso")
552 || strstr(ep->ep.name, "-int"))
554 switch (udc->gadget.speed) {
556 if ((max == 128) || (max == 256) || (max == 512))
572 case USB_ENDPOINT_XFER_INT:
573 if (strstr(ep->ep.name, "-iso")) /* bulk is ok */
575 switch (udc->gadget.speed) {
588 case USB_ENDPOINT_XFER_ISOC:
589 if (strstr(ep->ep.name, "-bulk")
590 || strstr(ep->ep.name, "-int"))
592 switch (udc->gadget.speed) {
603 case USB_ENDPOINT_XFER_CONTROL:
604 if (strstr(ep->ep.name, "-iso")
605 || strstr(ep->ep.name, "-int"))
607 switch (udc->gadget.speed) {
642 spin_lock_irqsave(&udc->lock, flags);
644 /* initialize ep structure */
645 ep->ep.maxpacket = max;
646 ep->tm = (u8)(desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
652 ep->dir = USB_DIR_BOTH;
653 udc->ep0_dir = USB_DIR_OUT;
654 udc->ep0_state = WAIT_FOR_SETUP;
656 switch (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
658 ep->dir = USB_DIR_OUT;
661 ep->dir = USB_DIR_IN;
667 /* hardware special operation */
668 qe_ep_bd_init(udc, pipe_num);
669 if ((ep->tm == USBP_TM_CTL) || (ep->dir == USB_DIR_OUT)) {
670 reval = qe_ep_rxbd_update(ep);
675 if ((ep->tm == USBP_TM_CTL) || (ep->dir == USB_DIR_IN)) {
676 ep->txframe = kmalloc(sizeof(*ep->txframe), GFP_ATOMIC);
677 if (ep->txframe == NULL) {
678 dev_err(udc->dev, "malloc txframe failed\n");
681 qe_frame_init(ep->txframe);
684 qe_ep_register_init(udc, pipe_num);
686 /* Now HW will be NAKing transfers to that EP,
687 * until a buffer is queued to it. */
688 spin_unlock_irqrestore(&udc->lock, flags);
695 spin_unlock_irqrestore(&udc->lock, flags);
697 dev_err(udc->dev, "failed to initialize %s\n", ep->ep.name);
701 static inline void qe_usb_enable(void)
703 setbits8(&udc_controller->usb_regs->usb_usmod, USB_MODE_EN);
706 static inline void qe_usb_disable(void)
708 clrbits8(&udc_controller->usb_regs->usb_usmod, USB_MODE_EN);
711 /*----------------------------------------------------------------------------*
712 * USB and EP basic manipulate function end *
713 *----------------------------------------------------------------------------*/
716 /******************************************************************************
717 UDC transmit and receive process
718 ******************************************************************************/
719 static void recycle_one_rxbd(struct qe_ep *ep)
723 bdstatus = in_be32((u32 __iomem *)ep->e_rxbd);
724 bdstatus = R_I | R_E | (bdstatus & R_W);
725 out_be32((u32 __iomem *)ep->e_rxbd, bdstatus);
728 ep->e_rxbd = ep->rxbase;
733 static void recycle_rxbds(struct qe_ep *ep, unsigned char stopatnext)
736 struct qe_bd __iomem *bd, *nextbd;
737 unsigned char stop = 0;
741 bdstatus = in_be32((u32 __iomem *)bd);
743 while (!(bdstatus & R_E) && !(bdstatus & BD_LENGTH_MASK) && !stop) {
744 bdstatus = R_E | R_I | (bdstatus & R_W);
745 out_be32((u32 __iomem *)bd, bdstatus);
752 bdstatus = in_be32((u32 __iomem *)bd);
753 if (stopatnext && (bd == nextbd))
760 static void ep_recycle_rxbds(struct qe_ep *ep)
762 struct qe_bd __iomem *bd = ep->n_rxbd;
764 u8 epnum = ep->epnum;
765 struct qe_udc *udc = ep->udc;
767 bdstatus = in_be32((u32 __iomem *)bd);
768 if (!(bdstatus & R_E) && !(bdstatus & BD_LENGTH_MASK)) {
770 ((in_be16(&udc->ep_param[epnum]->rbptr) -
771 in_be16(&udc->ep_param[epnum]->rbase))
773 bdstatus = in_be32((u32 __iomem *)bd);
781 recycle_rxbds(ep, 0);
782 ep->e_rxbd = ep->n_rxbd;
784 recycle_rxbds(ep, 1);
786 if (in_be16(&udc->usb_regs->usb_usber) & USB_E_BSY_MASK)
787 out_be16(&udc->usb_regs->usb_usber, USB_E_BSY_MASK);
789 if (ep->has_data <= 0 && (!list_empty(&ep->queue)))
795 static void setup_received_handle(struct qe_udc *udc,
796 struct usb_ctrlrequest *setup);
797 static int qe_ep_rxframe_handle(struct qe_ep *ep);
798 static void ep0_req_complete(struct qe_udc *udc, struct qe_req *req);
799 /* when BD PID is setup, handle the packet */
800 static int ep0_setup_handle(struct qe_udc *udc)
802 struct qe_ep *ep = &udc->eps[0];
803 struct qe_frame *pframe;
807 pframe = ep->rxframe;
808 if ((frame_get_info(pframe) & PID_SETUP)
809 && (udc->ep0_state == WAIT_FOR_SETUP)) {
810 fsize = frame_get_length(pframe);
811 if (unlikely(fsize != 8))
813 cp = (u8 *)&udc->local_setup_buff;
814 memcpy(cp, pframe->data, fsize);
817 /* handle the usb command base on the usb_ctrlrequest */
818 setup_received_handle(udc, &udc->local_setup_buff);
824 static int qe_ep0_rx(struct qe_udc *udc)
826 struct qe_ep *ep = &udc->eps[0];
827 struct qe_frame *pframe;
828 struct qe_bd __iomem *bd;
829 u32 bdstatus, length;
832 pframe = ep->rxframe;
834 if (ep->dir == USB_DIR_IN) {
835 dev_err(udc->dev, "ep0 not a control endpoint\n");
840 bdstatus = in_be32((u32 __iomem *)bd);
841 length = bdstatus & BD_LENGTH_MASK;
843 while (!(bdstatus & R_E) && length) {
844 if ((bdstatus & R_F) && (bdstatus & R_L)
845 && !(bdstatus & R_ERROR)) {
846 if (length == USB_CRC_SIZE) {
847 udc->ep0_state = WAIT_FOR_SETUP;
849 "receive a ZLP in status phase\n");
851 qe_frame_clean(pframe);
852 vaddr = (u32)phys_to_virt(in_be32(&bd->buf));
853 frame_set_data(pframe, (u8 *)vaddr);
854 frame_set_length(pframe,
855 (length - USB_CRC_SIZE));
856 frame_set_status(pframe, FRAME_OK);
857 switch (bdstatus & R_PID) {
859 frame_set_info(pframe, PID_SETUP);
862 frame_set_info(pframe, PID_DATA1);
865 frame_set_info(pframe, PID_DATA0);
869 if ((bdstatus & R_PID) == R_PID_SETUP)
870 ep0_setup_handle(udc);
872 qe_ep_rxframe_handle(ep);
875 dev_err(udc->dev, "The receive frame with error!\n");
878 /* note: don't clear the rxbd's buffer address */
879 recycle_one_rxbd(ep);
887 bdstatus = in_be32((u32 __iomem *)bd);
888 length = bdstatus & BD_LENGTH_MASK;
897 static int qe_ep_rxframe_handle(struct qe_ep *ep)
899 struct qe_frame *pframe;
905 pframe = ep->rxframe;
907 if (frame_get_info(pframe) & PID_DATA1)
910 if (framepid != ep->data01) {
911 dev_err(ep->udc->dev, "the data01 error!\n");
915 fsize = frame_get_length(pframe);
916 if (list_empty(&ep->queue)) {
917 dev_err(ep->udc->dev, "the %s have no requeue!\n", ep->name);
919 req = list_entry(ep->queue.next, struct qe_req, queue);
921 cp = (u8 *)(req->req.buf) + req->req.actual;
923 memcpy(cp, pframe->data, fsize);
924 req->req.actual += fsize;
925 if ((fsize < ep->ep.maxpacket) ||
926 (req->req.actual >= req->req.length)) {
928 ep0_req_complete(ep->udc, req);
931 if (list_empty(&ep->queue) && ep->epnum != 0)
937 qe_ep_toggledata01(ep);
942 static void ep_rx_tasklet(unsigned long data)
944 struct qe_udc *udc = (struct qe_udc *)data;
946 struct qe_frame *pframe;
947 struct qe_bd __iomem *bd;
949 u32 bdstatus, length;
952 spin_lock_irqsave(&udc->lock, flags);
954 for (i = 1; i < USB_MAX_ENDPOINTS; i++) {
957 if (ep->dir == USB_DIR_IN || ep->enable_tasklet == 0) {
959 "This is a transmit ep or disable tasklet!\n");
963 pframe = ep->rxframe;
965 bdstatus = in_be32((u32 __iomem *)bd);
966 length = bdstatus & BD_LENGTH_MASK;
968 while (!(bdstatus & R_E) && length) {
969 if (list_empty(&ep->queue)) {
972 "The rxep have noreq %d\n",
977 if ((bdstatus & R_F) && (bdstatus & R_L)
978 && !(bdstatus & R_ERROR)) {
979 qe_frame_clean(pframe);
980 vaddr = (u32)phys_to_virt(in_be32(&bd->buf));
981 frame_set_data(pframe, (u8 *)vaddr);
982 frame_set_length(pframe,
983 (length - USB_CRC_SIZE));
984 frame_set_status(pframe, FRAME_OK);
985 switch (bdstatus & R_PID) {
987 frame_set_info(pframe, PID_DATA1);
990 frame_set_info(pframe, PID_SETUP);
993 frame_set_info(pframe, PID_DATA0);
996 /* handle the rx frame */
997 qe_ep_rxframe_handle(ep);
1000 "error in received frame\n");
1002 /* note: don't clear the rxbd's buffer address */
1003 /*clear the length */
1004 out_be32((u32 __iomem *)bd, bdstatus & BD_STATUS_MASK);
1006 if (!(ep->localnack))
1007 recycle_one_rxbd(ep);
1015 bdstatus = in_be32((u32 __iomem *)bd);
1016 length = bdstatus & BD_LENGTH_MASK;
1022 ep_recycle_rxbds(ep);
1024 ep->enable_tasklet = 0;
1027 spin_unlock_irqrestore(&udc->lock, flags);
1030 static int qe_ep_rx(struct qe_ep *ep)
1033 struct qe_frame *pframe;
1034 struct qe_bd __iomem *bd;
1035 u16 swoffs, ucoffs, emptybds;
1038 pframe = ep->rxframe;
1040 if (ep->dir == USB_DIR_IN) {
1041 dev_err(udc->dev, "transmit ep in rx function\n");
1047 swoffs = (u16)(bd - ep->rxbase);
1048 ucoffs = (u16)((in_be16(&udc->ep_param[ep->epnum]->rbptr) -
1049 in_be16(&udc->ep_param[ep->epnum]->rbase)) >> 3);
1050 if (swoffs < ucoffs)
1051 emptybds = USB_BDRING_LEN_RX - ucoffs + swoffs;
1053 emptybds = swoffs - ucoffs;
1055 if (emptybds < MIN_EMPTY_BDS) {
1058 dev_vdbg(udc->dev, "%d empty bds, send NACK\n", emptybds);
1060 ep->has_data = USB_BDRING_LEN_RX - emptybds;
1062 if (list_empty(&ep->queue)) {
1064 dev_vdbg(udc->dev, "The rxep have no req queued with %d BDs\n",
1069 tasklet_schedule(&udc->rx_tasklet);
1070 ep->enable_tasklet = 1;
1075 /* send data from a frame, no matter what tx_req */
1076 static int qe_ep_tx(struct qe_ep *ep, struct qe_frame *frame)
1078 struct qe_udc *udc = ep->udc;
1079 struct qe_bd __iomem *bd;
1081 u32 bdstatus, pidmask;
1084 if (ep->dir == USB_DIR_OUT) {
1085 dev_err(udc->dev, "receive ep passed to tx function\n");
1089 /* Disable the Tx interrupt */
1090 saveusbmr = in_be16(&udc->usb_regs->usb_usbmr);
1091 out_be16(&udc->usb_regs->usb_usbmr,
1092 saveusbmr & ~(USB_E_TXB_MASK | USB_E_TXE_MASK));
1095 bdstatus = in_be32((u32 __iomem *)bd);
1097 if (!(bdstatus & (T_R | BD_LENGTH_MASK))) {
1098 if (frame_get_length(frame) == 0) {
1099 frame_set_data(frame, udc->nullbuf);
1100 frame_set_length(frame, 2);
1101 frame->info |= (ZLP | NO_CRC);
1102 dev_vdbg(udc->dev, "the frame size = 0\n");
1104 paddr = virt_to_phys((void *)frame->data);
1105 out_be32(&bd->buf, paddr);
1106 bdstatus = (bdstatus&T_W);
1107 if (!(frame_get_info(frame) & NO_CRC))
1108 bdstatus |= T_R | T_I | T_L | T_TC
1109 | frame_get_length(frame);
1111 bdstatus |= T_R | T_I | T_L | frame_get_length(frame);
1113 /* if the packet is a ZLP in status phase */
1114 if ((ep->epnum == 0) && (udc->ep0_state == DATA_STATE_NEED_ZLP))
1118 pidmask = T_PID_DATA1;
1119 frame->info |= PID_DATA1;
1121 pidmask = T_PID_DATA0;
1122 frame->info |= PID_DATA0;
1125 bdstatus |= pidmask;
1126 out_be32((u32 __iomem *)bd, bdstatus);
1127 qe_ep_filltxfifo(ep);
1129 /* enable the TX interrupt */
1130 out_be16(&udc->usb_regs->usb_usbmr, saveusbmr);
1132 qe_ep_toggledata01(ep);
1134 ep->n_txbd = ep->txbase;
1140 out_be16(&udc->usb_regs->usb_usbmr, saveusbmr);
1141 dev_vdbg(udc->dev, "The tx bd is not ready!\n");
1146 /* when a bd was transmitted, the function can
1147 * handle the tx_req, not include ep0 */
1148 static int txcomplete(struct qe_ep *ep, unsigned char restart)
1150 if (ep->tx_req != NULL) {
1152 int asent = ep->last;
1159 /* a request already were transmitted completely */
1160 if ((ep->tx_req->req.length - ep->sent) <= 0) {
1161 ep->tx_req->req.actual = (unsigned int)ep->sent;
1162 done(ep, ep->tx_req, 0);
1169 /* we should gain a new tx_req fot this endpoint */
1170 if (ep->tx_req == NULL) {
1171 if (!list_empty(&ep->queue)) {
1172 ep->tx_req = list_entry(ep->queue.next, struct qe_req,
1182 /* give a frame and a tx_req, send some data */
1183 static int qe_usb_senddata(struct qe_ep *ep, struct qe_frame *frame)
1188 qe_frame_clean(frame);
1189 size = min_t(u32, (ep->tx_req->req.length - ep->sent),
1191 buf = (u8 *)ep->tx_req->req.buf + ep->sent;
1194 frame_set_data(frame, buf);
1195 frame_set_length(frame, size);
1196 frame_set_status(frame, FRAME_OK);
1197 frame_set_info(frame, 0);
1198 return qe_ep_tx(ep, frame);
1203 /* give a frame struct,send a ZLP */
1204 static int sendnulldata(struct qe_ep *ep, struct qe_frame *frame, uint infor)
1206 struct qe_udc *udc = ep->udc;
1211 qe_frame_clean(frame);
1212 frame_set_data(frame, (u8 *)udc->nullbuf);
1213 frame_set_length(frame, 2);
1214 frame_set_status(frame, FRAME_OK);
1215 frame_set_info(frame, (ZLP | NO_CRC | infor));
1217 return qe_ep_tx(ep, frame);
1220 static int frame_create_tx(struct qe_ep *ep, struct qe_frame *frame)
1222 struct qe_req *req = ep->tx_req;
1228 if ((req->req.length - ep->sent) > 0)
1229 reval = qe_usb_senddata(ep, frame);
1231 reval = sendnulldata(ep, frame, 0);
1236 /* if direction is DIR_IN, the status is Device->Host
1237 * if direction is DIR_OUT, the status transaction is Device<-Host
1238 * in status phase, udc create a request and gain status */
1239 static int ep0_prime_status(struct qe_udc *udc, int direction)
1242 struct qe_ep *ep = &udc->eps[0];
1244 if (direction == USB_DIR_IN) {
1245 udc->ep0_state = DATA_STATE_NEED_ZLP;
1246 udc->ep0_dir = USB_DIR_IN;
1247 sendnulldata(ep, ep->txframe, SETUP_STATUS | NO_REQ);
1249 udc->ep0_dir = USB_DIR_OUT;
1250 udc->ep0_state = WAIT_FOR_OUT_STATUS;
1256 /* a request complete in ep0, whether gadget request or udc request */
1257 static void ep0_req_complete(struct qe_udc *udc, struct qe_req *req)
1259 struct qe_ep *ep = &udc->eps[0];
1260 /* because usb and ep's status already been set in ch9setaddress() */
1262 switch (udc->ep0_state) {
1263 case DATA_STATE_XMIT:
1265 /* receive status phase */
1266 if (ep0_prime_status(udc, USB_DIR_OUT))
1270 case DATA_STATE_NEED_ZLP:
1272 udc->ep0_state = WAIT_FOR_SETUP;
1275 case DATA_STATE_RECV:
1277 /* send status phase */
1278 if (ep0_prime_status(udc, USB_DIR_IN))
1282 case WAIT_FOR_OUT_STATUS:
1284 udc->ep0_state = WAIT_FOR_SETUP;
1287 case WAIT_FOR_SETUP:
1288 dev_vdbg(udc->dev, "Unexpected interrupt\n");
1297 static int ep0_txcomplete(struct qe_ep *ep, unsigned char restart)
1299 struct qe_req *tx_req = NULL;
1300 struct qe_frame *frame = ep->txframe;
1302 if ((frame_get_info(frame) & (ZLP | NO_REQ)) == (ZLP | NO_REQ)) {
1304 ep->udc->ep0_state = WAIT_FOR_SETUP;
1306 sendnulldata(ep, ep->txframe, SETUP_STATUS | NO_REQ);
1310 tx_req = ep->tx_req;
1311 if (tx_req != NULL) {
1313 int asent = ep->last;
1320 /* a request already were transmitted completely */
1321 if ((ep->tx_req->req.length - ep->sent) <= 0) {
1322 ep->tx_req->req.actual = (unsigned int)ep->sent;
1323 ep0_req_complete(ep->udc, ep->tx_req);
1329 dev_vdbg(ep->udc->dev, "the ep0_controller have no req\n");
1335 static int ep0_txframe_handle(struct qe_ep *ep)
1337 /* if have error, transmit again */
1338 if (frame_get_status(ep->txframe) & FRAME_ERROR) {
1339 qe_ep_flushtxfifo(ep);
1340 dev_vdbg(ep->udc->dev, "The EP0 transmit data have error!\n");
1341 if (frame_get_info(ep->txframe) & PID_DATA0)
1346 ep0_txcomplete(ep, 1);
1348 ep0_txcomplete(ep, 0);
1350 frame_create_tx(ep, ep->txframe);
1354 static int qe_ep0_txconf(struct qe_ep *ep)
1356 struct qe_bd __iomem *bd;
1357 struct qe_frame *pframe;
1361 bdstatus = in_be32((u32 __iomem *)bd);
1362 while (!(bdstatus & T_R) && (bdstatus & ~T_W)) {
1363 pframe = ep->txframe;
1365 /* clear and recycle the BD */
1366 out_be32((u32 __iomem *)bd, bdstatus & T_W);
1367 out_be32(&bd->buf, 0);
1369 ep->c_txbd = ep->txbase;
1373 if (ep->c_txbd == ep->n_txbd) {
1374 if (bdstatus & DEVICE_T_ERROR) {
1375 frame_set_status(pframe, FRAME_ERROR);
1376 if (bdstatus & T_TO)
1377 pframe->status |= TX_ER_TIMEOUT;
1378 if (bdstatus & T_UN)
1379 pframe->status |= TX_ER_UNDERUN;
1381 ep0_txframe_handle(ep);
1385 bdstatus = in_be32((u32 __iomem *)bd);
1391 static int ep_txframe_handle(struct qe_ep *ep)
1393 if (frame_get_status(ep->txframe) & FRAME_ERROR) {
1394 qe_ep_flushtxfifo(ep);
1395 dev_vdbg(ep->udc->dev, "The EP0 transmit data have error!\n");
1396 if (frame_get_info(ep->txframe) & PID_DATA0)
1405 frame_create_tx(ep, ep->txframe); /* send the data */
1409 /* confirm the already trainsmited bd */
1410 static int qe_ep_txconf(struct qe_ep *ep)
1412 struct qe_bd __iomem *bd;
1413 struct qe_frame *pframe = NULL;
1415 unsigned char breakonrxinterrupt = 0;
1418 bdstatus = in_be32((u32 __iomem *)bd);
1419 while (!(bdstatus & T_R) && (bdstatus & ~T_W)) {
1420 pframe = ep->txframe;
1421 if (bdstatus & DEVICE_T_ERROR) {
1422 frame_set_status(pframe, FRAME_ERROR);
1423 if (bdstatus & T_TO)
1424 pframe->status |= TX_ER_TIMEOUT;
1425 if (bdstatus & T_UN)
1426 pframe->status |= TX_ER_UNDERUN;
1429 /* clear and recycle the BD */
1430 out_be32((u32 __iomem *)bd, bdstatus & T_W);
1431 out_be32(&bd->buf, 0);
1433 ep->c_txbd = ep->txbase;
1437 /* handle the tx frame */
1438 ep_txframe_handle(ep);
1440 bdstatus = in_be32((u32 __iomem *)bd);
1442 if (breakonrxinterrupt)
1448 /* Add a request in queue, and try to transmit a packet */
1449 static int ep_req_send(struct qe_ep *ep, struct qe_req *req)
1453 if (ep->tx_req == NULL) {
1456 txcomplete(ep, 0); /* can gain a new tx_req */
1457 reval = frame_create_tx(ep, ep->txframe);
1462 /* Maybe this is a good ideal */
1463 static int ep_req_rx(struct qe_ep *ep, struct qe_req *req)
1465 struct qe_udc *udc = ep->udc;
1466 struct qe_frame *pframe = NULL;
1467 struct qe_bd __iomem *bd;
1468 u32 bdstatus, length;
1474 if (list_empty(&ep->queue)) {
1475 dev_vdbg(udc->dev, "the req already finish!\n");
1478 pframe = ep->rxframe;
1481 bdstatus = in_be32((u32 __iomem *)bd);
1482 length = bdstatus & BD_LENGTH_MASK;
1484 while (!(bdstatus & R_E) && length) {
1487 if ((bdstatus & R_F) && (bdstatus & R_L)
1488 && !(bdstatus & R_ERROR)) {
1489 qe_frame_clean(pframe);
1490 vaddr = (u32)phys_to_virt(in_be32(&bd->buf));
1491 frame_set_data(pframe, (u8 *)vaddr);
1492 frame_set_length(pframe, (length - USB_CRC_SIZE));
1493 frame_set_status(pframe, FRAME_OK);
1494 switch (bdstatus & R_PID) {
1496 frame_set_info(pframe, PID_DATA1); break;
1498 frame_set_info(pframe, PID_DATA0); break;
1500 /* handle the rx frame */
1502 if (frame_get_info(pframe) & PID_DATA1)
1507 if (framepid != ep->data01) {
1508 dev_vdbg(udc->dev, "the data01 error!\n");
1510 fsize = frame_get_length(pframe);
1512 cp = (u8 *)(req->req.buf) + req->req.actual;
1514 memcpy(cp, pframe->data, fsize);
1515 req->req.actual += fsize;
1516 if ((fsize < ep->ep.maxpacket)
1517 || (req->req.actual >=
1521 if (list_empty(&ep->queue))
1525 qe_ep_toggledata01(ep);
1528 dev_err(udc->dev, "The receive frame with error!\n");
1531 /* note: don't clear the rxbd's buffer address *
1532 * only Clear the length */
1533 out_be32((u32 __iomem *)bd, (bdstatus & BD_STATUS_MASK));
1542 bdstatus = in_be32((u32 __iomem *)bd);
1543 length = bdstatus & BD_LENGTH_MASK;
1547 ep_recycle_rxbds(ep);
1552 /* only add the request in queue */
1553 static int ep_req_receive(struct qe_ep *ep, struct qe_req *req)
1555 if (ep->state == EP_STATE_NACK) {
1556 if (ep->has_data <= 0) {
1557 /* Enable rx and unmask rx interrupt */
1560 /* Copy the exist BD data */
1568 /********************************************************************
1569 Internal Used Function End
1570 ********************************************************************/
1572 /*-----------------------------------------------------------------------
1573 Endpoint Management Functions For Gadget
1574 -----------------------------------------------------------------------*/
1575 static int qe_ep_enable(struct usb_ep *_ep,
1576 const struct usb_endpoint_descriptor *desc)
1581 unsigned char epnum;
1583 ep = container_of(_ep, struct qe_ep, ep);
1585 /* catch various bogus parameters */
1586 if (!_ep || !desc || ep->desc || _ep->name == ep_name[0] ||
1587 (desc->bDescriptorType != USB_DT_ENDPOINT))
1591 if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN))
1594 epnum = (u8)desc->bEndpointAddress & 0xF;
1596 retval = qe_ep_init(udc, epnum, desc);
1598 cpm_muram_free(cpm_muram_offset(ep->rxbase));
1599 dev_dbg(udc->dev, "enable ep%d failed\n", ep->epnum);
1602 dev_dbg(udc->dev, "enable ep%d successful\n", ep->epnum);
1606 static int qe_ep_disable(struct usb_ep *_ep)
1610 unsigned long flags;
1613 ep = container_of(_ep, struct qe_ep, ep);
1616 if (!_ep || !ep->desc) {
1617 dev_dbg(udc->dev, "%s not enabled\n", _ep ? ep->ep.name : NULL);
1621 spin_lock_irqsave(&udc->lock, flags);
1622 /* Nuke all pending requests (does flush) */
1623 nuke(ep, -ESHUTDOWN);
1627 qe_ep_reset(udc, ep->epnum);
1628 spin_unlock_irqrestore(&udc->lock, flags);
1630 cpm_muram_free(cpm_muram_offset(ep->rxbase));
1632 if (ep->dir == USB_DIR_OUT)
1633 size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) *
1634 (USB_BDRING_LEN_RX + 1);
1636 size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) *
1637 (USB_BDRING_LEN + 1);
1639 if (ep->dir != USB_DIR_IN) {
1642 dma_unmap_single(udc_controller->gadget.dev.parent,
1645 ep->rxbuf_d = DMA_ADDR_INVALID;
1647 dma_sync_single_for_cpu(
1648 udc_controller->gadget.dev.parent,
1652 kfree(ep->rxbuffer);
1655 if (ep->dir != USB_DIR_OUT)
1658 dev_dbg(udc->dev, "disabled %s OK\n", _ep->name);
1662 static struct usb_request *qe_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
1666 req = kzalloc(sizeof(*req), gfp_flags);
1670 req->req.dma = DMA_ADDR_INVALID;
1672 INIT_LIST_HEAD(&req->queue);
1677 static void qe_free_request(struct usb_ep *_ep, struct usb_request *_req)
1681 req = container_of(_req, struct qe_req, req);
1687 static int __qe_ep_queue(struct usb_ep *_ep, struct usb_request *_req)
1689 struct qe_ep *ep = container_of(_ep, struct qe_ep, ep);
1690 struct qe_req *req = container_of(_req, struct qe_req, req);
1695 /* catch various bogus parameters */
1696 if (!_req || !req->req.complete || !req->req.buf
1697 || !list_empty(&req->queue)) {
1698 dev_dbg(udc->dev, "bad params\n");
1701 if (!_ep || (!ep->desc && ep_index(ep))) {
1702 dev_dbg(udc->dev, "bad ep\n");
1706 if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN)
1711 /* map virtual address to hardware */
1712 if (req->req.dma == DMA_ADDR_INVALID) {
1713 req->req.dma = dma_map_single(ep->udc->gadget.dev.parent,
1721 dma_sync_single_for_device(ep->udc->gadget.dev.parent,
1722 req->req.dma, req->req.length,
1729 req->req.status = -EINPROGRESS;
1730 req->req.actual = 0;
1732 list_add_tail(&req->queue, &ep->queue);
1733 dev_vdbg(udc->dev, "gadget have request in %s! %d\n",
1734 ep->name, req->req.length);
1736 /* push the request to device */
1738 reval = ep_req_send(ep, req);
1741 if (ep_index(ep) == 0 && req->req.length > 0) {
1743 udc->ep0_state = DATA_STATE_XMIT;
1745 udc->ep0_state = DATA_STATE_RECV;
1748 if (ep->dir == USB_DIR_OUT)
1749 reval = ep_req_receive(ep, req);
1754 /* queues (submits) an I/O request to an endpoint */
1755 static int qe_ep_queue(struct usb_ep *_ep, struct usb_request *_req,
1758 struct qe_ep *ep = container_of(_ep, struct qe_ep, ep);
1759 struct qe_udc *udc = ep->udc;
1760 unsigned long flags;
1763 spin_lock_irqsave(&udc->lock, flags);
1764 ret = __qe_ep_queue(_ep, _req);
1765 spin_unlock_irqrestore(&udc->lock, flags);
1769 /* dequeues (cancels, unlinks) an I/O request from an endpoint */
1770 static int qe_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
1772 struct qe_ep *ep = container_of(_ep, struct qe_ep, ep);
1774 unsigned long flags;
1779 spin_lock_irqsave(&ep->udc->lock, flags);
1781 /* make sure it's actually queued on this endpoint */
1782 list_for_each_entry(req, &ep->queue, queue) {
1783 if (&req->req == _req)
1787 if (&req->req != _req) {
1788 spin_unlock_irqrestore(&ep->udc->lock, flags);
1792 done(ep, req, -ECONNRESET);
1794 spin_unlock_irqrestore(&ep->udc->lock, flags);
1798 /*-----------------------------------------------------------------
1799 * modify the endpoint halt feature
1800 * @ep: the non-isochronous endpoint being stalled
1801 * @value: 1--set halt 0--clear halt
1802 * Returns zero, or a negative error code.
1803 *----------------------------------------------------------------*/
1804 static int qe_ep_set_halt(struct usb_ep *_ep, int value)
1807 unsigned long flags;
1808 int status = -EOPNOTSUPP;
1811 ep = container_of(_ep, struct qe_ep, ep);
1812 if (!_ep || !ep->desc) {
1818 /* Attempt to halt IN ep will fail if any transfer requests
1819 * are still queue */
1820 if (value && ep_is_in(ep) && !list_empty(&ep->queue)) {
1826 spin_lock_irqsave(&ep->udc->lock, flags);
1827 qe_eptx_stall_change(ep, value);
1828 qe_eprx_stall_change(ep, value);
1829 spin_unlock_irqrestore(&ep->udc->lock, flags);
1831 if (ep->epnum == 0) {
1832 udc->ep0_state = WAIT_FOR_SETUP;
1836 /* set data toggle to DATA0 on clear halt */
1840 dev_vdbg(udc->dev, "%s %s halt stat %d\n", ep->ep.name,
1841 value ? "set" : "clear", status);
1846 static struct usb_ep_ops qe_ep_ops = {
1847 .enable = qe_ep_enable,
1848 .disable = qe_ep_disable,
1850 .alloc_request = qe_alloc_request,
1851 .free_request = qe_free_request,
1853 .queue = qe_ep_queue,
1854 .dequeue = qe_ep_dequeue,
1856 .set_halt = qe_ep_set_halt,
1859 /*------------------------------------------------------------------------
1860 Gadget Driver Layer Operations
1861 ------------------------------------------------------------------------*/
1863 /* Get the current frame number */
1864 static int qe_get_frame(struct usb_gadget *gadget)
1868 tmp = in_be16(&udc_controller->usb_param->frame_n);
1877 /* Tries to wake up the host connected to this gadget
1879 * Return : 0-success
1880 * Negative-this feature not enabled by host or not supported by device hw
1882 static int qe_wakeup(struct usb_gadget *gadget)
1887 /* Notify controller that VBUS is powered, Called by whatever
1888 detects VBUS sessions */
1889 static int qe_vbus_session(struct usb_gadget *gadget, int is_active)
1894 /* constrain controller's VBUS power usage
1895 * This call is used by gadget drivers during SET_CONFIGURATION calls,
1896 * reporting how much power the device may consume. For example, this
1897 * could affect how quickly batteries are recharged.
1899 * Returns zero on success, else negative errno.
1901 static int qe_vbus_draw(struct usb_gadget *gadget, unsigned mA)
1906 /* Change Data+ pullup status
1907 * this func is used by usb_gadget_connect/disconnect
1909 static int qe_pullup(struct usb_gadget *gadget, int is_on)
1914 /* defined in usb_gadget.h */
1915 static struct usb_gadget_ops qe_gadget_ops = {
1916 .get_frame = qe_get_frame,
1917 .wakeup = qe_wakeup,
1918 /* .set_selfpowered = qe_set_selfpowered,*/ /* always selfpowered */
1919 .vbus_session = qe_vbus_session,
1920 .vbus_draw = qe_vbus_draw,
1921 .pullup = qe_pullup,
1924 /*-------------------------------------------------------------------------
1925 USB ep0 Setup process in BUS Enumeration
1926 -------------------------------------------------------------------------*/
1927 static int udc_reset_ep_queue(struct qe_udc *udc, u8 pipe)
1929 struct qe_ep *ep = &udc->eps[pipe];
1931 nuke(ep, -ECONNRESET);
1936 static int reset_queues(struct qe_udc *udc)
1940 for (pipe = 0; pipe < USB_MAX_ENDPOINTS; pipe++)
1941 udc_reset_ep_queue(udc, pipe);
1943 /* report disconnect; the driver is already quiesced */
1944 spin_unlock(&udc->lock);
1945 udc->driver->disconnect(&udc->gadget);
1946 spin_lock(&udc->lock);
1951 static void ch9setaddress(struct qe_udc *udc, u16 value, u16 index,
1954 /* Save the new address to device struct */
1955 udc->device_address = (u8) value;
1956 /* Update usb state */
1957 udc->usb_state = USB_STATE_ADDRESS;
1959 /* Status phase , send a ZLP */
1960 if (ep0_prime_status(udc, USB_DIR_IN))
1964 static void ownercomplete(struct usb_ep *_ep, struct usb_request *_req)
1966 struct qe_req *req = container_of(_req, struct qe_req, req);
1968 req->req.buf = NULL;
1972 static void ch9getstatus(struct qe_udc *udc, u8 request_type, u16 value,
1973 u16 index, u16 length)
1981 if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
1982 /* Get device status */
1983 usb_status = 1 << USB_DEVICE_SELF_POWERED;
1984 } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) {
1985 /* Get interface status */
1986 /* We don't have interface information in udc driver */
1988 } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) {
1989 /* Get endpoint status */
1990 int pipe = index & USB_ENDPOINT_NUMBER_MASK;
1991 struct qe_ep *target_ep = &udc->eps[pipe];
1994 /* stall if endpoint doesn't exist */
1995 if (!target_ep->desc)
1998 usep = in_be16(&udc->usb_regs->usb_usep[pipe]);
1999 if (index & USB_DIR_IN) {
2000 if (target_ep->dir != USB_DIR_IN)
2002 if ((usep & USB_THS_MASK) == USB_THS_STALL)
2003 usb_status = 1 << USB_ENDPOINT_HALT;
2005 if (target_ep->dir != USB_DIR_OUT)
2007 if ((usep & USB_RHS_MASK) == USB_RHS_STALL)
2008 usb_status = 1 << USB_ENDPOINT_HALT;
2012 req = container_of(qe_alloc_request(&ep->ep, GFP_KERNEL),
2013 struct qe_req, req);
2014 req->req.length = 2;
2015 req->req.buf = udc->statusbuf;
2016 *(u16 *)req->req.buf = cpu_to_le16(usb_status);
2017 req->req.status = -EINPROGRESS;
2018 req->req.actual = 0;
2019 req->req.complete = ownercomplete;
2021 udc->ep0_dir = USB_DIR_IN;
2024 status = __qe_ep_queue(&ep->ep, &req->req);
2029 dev_err(udc->dev, "Can't respond to getstatus request \n");
2033 /* only handle the setup request, suppose the device in normal status */
2034 static void setup_received_handle(struct qe_udc *udc,
2035 struct usb_ctrlrequest *setup)
2037 /* Fix Endian (udc->local_setup_buff is cpu Endian now)*/
2038 u16 wValue = le16_to_cpu(setup->wValue);
2039 u16 wIndex = le16_to_cpu(setup->wIndex);
2040 u16 wLength = le16_to_cpu(setup->wLength);
2042 /* clear the previous request in the ep0 */
2043 udc_reset_ep_queue(udc, 0);
2045 if (setup->bRequestType & USB_DIR_IN)
2046 udc->ep0_dir = USB_DIR_IN;
2048 udc->ep0_dir = USB_DIR_OUT;
2050 switch (setup->bRequest) {
2051 case USB_REQ_GET_STATUS:
2052 /* Data+Status phase form udc */
2053 if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK))
2054 != (USB_DIR_IN | USB_TYPE_STANDARD))
2056 ch9getstatus(udc, setup->bRequestType, wValue, wIndex,
2060 case USB_REQ_SET_ADDRESS:
2061 /* Status phase from udc */
2062 if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD |
2065 ch9setaddress(udc, wValue, wIndex, wLength);
2068 case USB_REQ_CLEAR_FEATURE:
2069 case USB_REQ_SET_FEATURE:
2070 /* Requests with no data phase, status phase from udc */
2071 if ((setup->bRequestType & USB_TYPE_MASK)
2072 != USB_TYPE_STANDARD)
2075 if ((setup->bRequestType & USB_RECIP_MASK)
2076 == USB_RECIP_ENDPOINT) {
2077 int pipe = wIndex & USB_ENDPOINT_NUMBER_MASK;
2080 if (wValue != 0 || wLength != 0
2081 || pipe > USB_MAX_ENDPOINTS)
2083 ep = &udc->eps[pipe];
2085 spin_unlock(&udc->lock);
2086 qe_ep_set_halt(&ep->ep,
2087 (setup->bRequest == USB_REQ_SET_FEATURE)
2089 spin_lock(&udc->lock);
2092 ep0_prime_status(udc, USB_DIR_IN);
2101 /* Data phase from gadget, status phase from udc */
2102 if (setup->bRequestType & USB_DIR_IN) {
2103 udc->ep0_state = DATA_STATE_XMIT;
2104 udc->ep0_dir = USB_DIR_IN;
2106 udc->ep0_state = DATA_STATE_RECV;
2107 udc->ep0_dir = USB_DIR_OUT;
2109 spin_unlock(&udc->lock);
2110 if (udc->driver->setup(&udc->gadget,
2111 &udc->local_setup_buff) < 0)
2113 spin_lock(&udc->lock);
2115 /* No data phase, IN status from gadget */
2116 udc->ep0_dir = USB_DIR_IN;
2117 spin_unlock(&udc->lock);
2118 if (udc->driver->setup(&udc->gadget,
2119 &udc->local_setup_buff) < 0)
2121 spin_lock(&udc->lock);
2122 udc->ep0_state = DATA_STATE_NEED_ZLP;
2126 /*-------------------------------------------------------------------------
2127 USB Interrupt handlers
2128 -------------------------------------------------------------------------*/
2129 static void suspend_irq(struct qe_udc *udc)
2131 udc->resume_state = udc->usb_state;
2132 udc->usb_state = USB_STATE_SUSPENDED;
2134 /* report suspend to the driver ,serial.c not support this*/
2135 if (udc->driver->suspend)
2136 udc->driver->suspend(&udc->gadget);
2139 static void resume_irq(struct qe_udc *udc)
2141 udc->usb_state = udc->resume_state;
2142 udc->resume_state = 0;
2144 /* report resume to the driver , serial.c not support this*/
2145 if (udc->driver->resume)
2146 udc->driver->resume(&udc->gadget);
2149 static void idle_irq(struct qe_udc *udc)
2153 usbs = in_8(&udc->usb_regs->usb_usbs);
2154 if (usbs & USB_IDLE_STATUS_MASK) {
2155 if ((udc->usb_state) != USB_STATE_SUSPENDED)
2158 if (udc->usb_state == USB_STATE_SUSPENDED)
2163 static int reset_irq(struct qe_udc *udc)
2167 if (udc->usb_state == USB_STATE_DEFAULT)
2171 out_8(&udc->usb_regs->usb_usadr, 0);
2173 for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
2174 if (udc->eps[i].init)
2175 qe_ep_reset(udc, i);
2179 udc->usb_state = USB_STATE_DEFAULT;
2180 udc->ep0_state = WAIT_FOR_SETUP;
2181 udc->ep0_dir = USB_DIR_OUT;
2186 static int bsy_irq(struct qe_udc *udc)
2191 static int txe_irq(struct qe_udc *udc)
2196 /* ep0 tx interrupt also in here */
2197 static int tx_irq(struct qe_udc *udc)
2200 struct qe_bd __iomem *bd;
2203 if ((udc->usb_state == USB_STATE_ADDRESS)
2204 && (in_8(&udc->usb_regs->usb_usadr) == 0))
2205 out_8(&udc->usb_regs->usb_usadr, udc->device_address);
2207 for (i = (USB_MAX_ENDPOINTS-1); ((i >= 0) && (res == 0)); i--) {
2209 if (ep && ep->init && (ep->dir != USB_DIR_OUT)) {
2211 if (!(in_be32((u32 __iomem *)bd) & T_R)
2212 && (in_be32(&bd->buf))) {
2213 /* confirm the transmitted bd */
2215 res = qe_ep0_txconf(ep);
2217 res = qe_ep_txconf(ep);
2225 /* setup packect's rx is handle in the function too */
2226 static void rx_irq(struct qe_udc *udc)
2229 struct qe_bd __iomem *bd;
2232 for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
2234 if (ep && ep->init && (ep->dir != USB_DIR_IN)) {
2236 if (!(in_be32((u32 __iomem *)bd) & R_E)
2237 && (in_be32(&bd->buf))) {
2238 if (ep->epnum == 0) {
2241 /*non-setup package receive*/
2249 static irqreturn_t qe_udc_irq(int irq, void *_udc)
2251 struct qe_udc *udc = (struct qe_udc *)_udc;
2253 irqreturn_t status = IRQ_NONE;
2254 unsigned long flags;
2256 spin_lock_irqsave(&udc->lock, flags);
2258 irq_src = in_be16(&udc->usb_regs->usb_usber) &
2259 in_be16(&udc->usb_regs->usb_usbmr);
2260 /* Clear notification bits */
2261 out_be16(&udc->usb_regs->usb_usber, irq_src);
2263 if (irq_src & USB_E_IDLE_MASK) {
2265 irq_src &= ~USB_E_IDLE_MASK;
2266 status = IRQ_HANDLED;
2269 if (irq_src & USB_E_TXB_MASK) {
2271 irq_src &= ~USB_E_TXB_MASK;
2272 status = IRQ_HANDLED;
2275 if (irq_src & USB_E_RXB_MASK) {
2277 irq_src &= ~USB_E_RXB_MASK;
2278 status = IRQ_HANDLED;
2281 if (irq_src & USB_E_RESET_MASK) {
2283 irq_src &= ~USB_E_RESET_MASK;
2284 status = IRQ_HANDLED;
2287 if (irq_src & USB_E_BSY_MASK) {
2289 irq_src &= ~USB_E_BSY_MASK;
2290 status = IRQ_HANDLED;
2293 if (irq_src & USB_E_TXE_MASK) {
2295 irq_src &= ~USB_E_TXE_MASK;
2296 status = IRQ_HANDLED;
2299 spin_unlock_irqrestore(&udc->lock, flags);
2304 /*-------------------------------------------------------------------------
2305 Gadget driver probe and unregister.
2306 --------------------------------------------------------------------------*/
2307 int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
2308 int (*bind)(struct usb_gadget *))
2311 unsigned long flags = 0;
2313 /* standard operations */
2314 if (!udc_controller)
2317 if (!driver || (driver->speed != USB_SPEED_FULL
2318 && driver->speed != USB_SPEED_HIGH)
2319 || !bind || !driver->disconnect || !driver->setup)
2322 if (udc_controller->driver)
2325 /* lock is needed but whether should use this lock or another */
2326 spin_lock_irqsave(&udc_controller->lock, flags);
2328 driver->driver.bus = NULL;
2329 /* hook up the driver */
2330 udc_controller->driver = driver;
2331 udc_controller->gadget.dev.driver = &driver->driver;
2332 udc_controller->gadget.speed = (enum usb_device_speed)(driver->speed);
2333 spin_unlock_irqrestore(&udc_controller->lock, flags);
2335 retval = bind(&udc_controller->gadget);
2337 dev_err(udc_controller->dev, "bind to %s --> %d",
2338 driver->driver.name, retval);
2339 udc_controller->gadget.dev.driver = NULL;
2340 udc_controller->driver = NULL;
2344 /* Enable IRQ reg and Set usbcmd reg EN bit */
2347 out_be16(&udc_controller->usb_regs->usb_usber, 0xffff);
2348 out_be16(&udc_controller->usb_regs->usb_usbmr, USB_E_DEFAULT_DEVICE);
2349 udc_controller->usb_state = USB_STATE_ATTACHED;
2350 udc_controller->ep0_state = WAIT_FOR_SETUP;
2351 udc_controller->ep0_dir = USB_DIR_OUT;
2352 dev_info(udc_controller->dev, "%s bind to driver %s \n",
2353 udc_controller->gadget.name, driver->driver.name);
2356 EXPORT_SYMBOL(usb_gadget_probe_driver);
2358 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
2360 struct qe_ep *loop_ep;
2361 unsigned long flags;
2363 if (!udc_controller)
2366 if (!driver || driver != udc_controller->driver)
2369 /* stop usb controller, disable intr */
2372 /* in fact, no needed */
2373 udc_controller->usb_state = USB_STATE_ATTACHED;
2374 udc_controller->ep0_state = WAIT_FOR_SETUP;
2375 udc_controller->ep0_dir = 0;
2377 /* stand operation */
2378 spin_lock_irqsave(&udc_controller->lock, flags);
2379 udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
2380 nuke(&udc_controller->eps[0], -ESHUTDOWN);
2381 list_for_each_entry(loop_ep, &udc_controller->gadget.ep_list,
2383 nuke(loop_ep, -ESHUTDOWN);
2384 spin_unlock_irqrestore(&udc_controller->lock, flags);
2386 /* report disconnect; the controller is already quiesced */
2387 driver->disconnect(&udc_controller->gadget);
2389 /* unbind gadget and unhook driver. */
2390 driver->unbind(&udc_controller->gadget);
2391 udc_controller->gadget.dev.driver = NULL;
2392 udc_controller->driver = NULL;
2394 dev_info(udc_controller->dev, "unregistered gadget driver '%s'\r\n",
2395 driver->driver.name);
2398 EXPORT_SYMBOL(usb_gadget_unregister_driver);
2400 /* udc structure's alloc and setup, include ep-param alloc */
2401 static struct qe_udc __devinit *qe_udc_config(struct platform_device *ofdev)
2404 struct device_node *np = ofdev->dev.of_node;
2405 unsigned int tmp_addr = 0;
2406 struct usb_device_para __iomem *usbpram;
2411 udc = kzalloc(sizeof(*udc), GFP_KERNEL);
2413 dev_err(&ofdev->dev, "malloc udc failed\n");
2417 udc->dev = &ofdev->dev;
2419 /* get default address of usb parameter in MURAM from device tree */
2420 offset = *of_get_address(np, 1, &size, NULL);
2421 udc->usb_param = cpm_muram_addr(offset);
2422 memset_io(udc->usb_param, 0, size);
2424 usbpram = udc->usb_param;
2425 out_be16(&usbpram->frame_n, 0);
2426 out_be32(&usbpram->rstate, 0);
2428 tmp_addr = cpm_muram_alloc((USB_MAX_ENDPOINTS *
2429 sizeof(struct usb_ep_para)),
2430 USB_EP_PARA_ALIGNMENT);
2431 if (IS_ERR_VALUE(tmp_addr))
2434 for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
2435 out_be16(&usbpram->epptr[i], (u16)tmp_addr);
2436 udc->ep_param[i] = cpm_muram_addr(tmp_addr);
2440 memset_io(udc->ep_param[0], 0,
2441 USB_MAX_ENDPOINTS * sizeof(struct usb_ep_para));
2443 udc->resume_state = USB_STATE_NOTATTACHED;
2444 udc->usb_state = USB_STATE_POWERED;
2447 spin_lock_init(&udc->lock);
2455 /* USB Controller register init */
2456 static int __devinit qe_udc_reg_init(struct qe_udc *udc)
2458 struct usb_ctlr __iomem *qe_usbregs;
2459 qe_usbregs = udc->usb_regs;
2461 /* Spec says that we must enable the USB controller to change mode. */
2462 out_8(&qe_usbregs->usb_usmod, 0x01);
2463 /* Mode changed, now disable it, since muram isn't initialized yet. */
2464 out_8(&qe_usbregs->usb_usmod, 0x00);
2466 /* Initialize the rest. */
2467 out_be16(&qe_usbregs->usb_usbmr, 0);
2468 out_8(&qe_usbregs->usb_uscom, 0);
2469 out_be16(&qe_usbregs->usb_usber, USBER_ALL_CLEAR);
2474 static int __devinit qe_ep_config(struct qe_udc *udc, unsigned char pipe_num)
2476 struct qe_ep *ep = &udc->eps[pipe_num];
2479 strcpy(ep->name, ep_name[pipe_num]);
2480 ep->ep.name = ep_name[pipe_num];
2482 ep->ep.ops = &qe_ep_ops;
2484 ep->ep.maxpacket = (unsigned short) ~0;
2487 ep->epnum = (u8)pipe_num;
2494 ep->state = EP_STATE_IDLE;
2497 /* the queue lists any req for this ep */
2498 INIT_LIST_HEAD(&ep->queue);
2500 /* gagdet.ep_list used for ep_autoconfig so no ep0*/
2502 list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
2504 ep->gadget = &udc->gadget;
2509 /*-----------------------------------------------------------------------
2510 * UDC device Driver operation functions *
2511 *----------------------------------------------------------------------*/
2512 static void qe_udc_release(struct device *dev)
2516 complete(udc_controller->done);
2517 cpm_muram_free(cpm_muram_offset(udc_controller->ep_param[0]));
2518 for (i = 0; i < USB_MAX_ENDPOINTS; i++)
2519 udc_controller->ep_param[i] = NULL;
2521 kfree(udc_controller);
2522 udc_controller = NULL;
2525 /* Driver probe functions */
2526 static int __devinit qe_udc_probe(struct platform_device *ofdev,
2527 const struct of_device_id *match)
2529 struct device_node *np = ofdev->dev.of_node;
2531 unsigned int ret = 0;
2535 prop = of_get_property(np, "mode", NULL);
2536 if (!prop || strcmp(prop, "peripheral"))
2539 /* Initialize the udc structure including QH member and other member */
2540 udc_controller = qe_udc_config(ofdev);
2541 if (!udc_controller) {
2542 dev_err(&ofdev->dev, "failed to initialize\n");
2546 udc_controller->soc_type = (unsigned long)match->data;
2547 udc_controller->usb_regs = of_iomap(np, 0);
2548 if (!udc_controller->usb_regs) {
2553 /* initialize usb hw reg except for regs for EP,
2554 * leave usbintr reg untouched*/
2555 qe_udc_reg_init(udc_controller);
2557 /* here comes the stand operations for probe
2558 * set the qe_udc->gadget.xxx */
2559 udc_controller->gadget.ops = &qe_gadget_ops;
2561 /* gadget.ep0 is a pointer */
2562 udc_controller->gadget.ep0 = &udc_controller->eps[0].ep;
2564 INIT_LIST_HEAD(&udc_controller->gadget.ep_list);
2566 /* modify in register gadget process */
2567 udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
2569 /* name: Identifies the controller hardware type. */
2570 udc_controller->gadget.name = driver_name;
2572 device_initialize(&udc_controller->gadget.dev);
2574 dev_set_name(&udc_controller->gadget.dev, "gadget");
2576 udc_controller->gadget.dev.release = qe_udc_release;
2577 udc_controller->gadget.dev.parent = &ofdev->dev;
2579 /* initialize qe_ep struct */
2580 for (i = 0; i < USB_MAX_ENDPOINTS ; i++) {
2581 /* because the ep type isn't decide here so
2582 * qe_ep_init() should be called in ep_enable() */
2584 /* setup the qe_ep struct and link ep.ep.list
2585 * into gadget.ep_list */
2586 qe_ep_config(udc_controller, (unsigned char)i);
2589 /* ep0 initialization in here */
2590 ret = qe_ep_init(udc_controller, 0, &qe_ep0_desc);
2594 /* create a buf for ZLP send, need to remain zeroed */
2595 udc_controller->nullbuf = kzalloc(256, GFP_KERNEL);
2596 if (udc_controller->nullbuf == NULL) {
2597 dev_err(udc_controller->dev, "cannot alloc nullbuf\n");
2602 /* buffer for data of get_status request */
2603 udc_controller->statusbuf = kzalloc(2, GFP_KERNEL);
2604 if (udc_controller->statusbuf == NULL) {
2609 udc_controller->nullp = virt_to_phys((void *)udc_controller->nullbuf);
2610 if (udc_controller->nullp == DMA_ADDR_INVALID) {
2611 udc_controller->nullp = dma_map_single(
2612 udc_controller->gadget.dev.parent,
2613 udc_controller->nullbuf,
2616 udc_controller->nullmap = 1;
2618 dma_sync_single_for_device(udc_controller->gadget.dev.parent,
2619 udc_controller->nullp, 256,
2623 tasklet_init(&udc_controller->rx_tasklet, ep_rx_tasklet,
2624 (unsigned long)udc_controller);
2625 /* request irq and disable DR */
2626 udc_controller->usb_irq = irq_of_parse_and_map(np, 0);
2627 if (!udc_controller->usb_irq) {
2632 ret = request_irq(udc_controller->usb_irq, qe_udc_irq, 0,
2633 driver_name, udc_controller);
2635 dev_err(udc_controller->dev, "cannot request irq %d err %d \n",
2636 udc_controller->usb_irq, ret);
2640 ret = device_add(&udc_controller->gadget.dev);
2644 dev_info(udc_controller->dev,
2645 "%s USB controller initialized as device\n",
2646 (udc_controller->soc_type == PORT_QE) ? "QE" : "CPM");
2650 free_irq(udc_controller->usb_irq, udc_controller);
2652 irq_dispose_mapping(udc_controller->usb_irq);
2654 if (udc_controller->nullmap) {
2655 dma_unmap_single(udc_controller->gadget.dev.parent,
2656 udc_controller->nullp, 256,
2658 udc_controller->nullp = DMA_ADDR_INVALID;
2660 dma_sync_single_for_cpu(udc_controller->gadget.dev.parent,
2661 udc_controller->nullp, 256,
2664 kfree(udc_controller->statusbuf);
2666 kfree(udc_controller->nullbuf);
2668 ep = &udc_controller->eps[0];
2669 cpm_muram_free(cpm_muram_offset(ep->rxbase));
2671 kfree(ep->rxbuffer);
2674 iounmap(udc_controller->usb_regs);
2676 kfree(udc_controller);
2677 udc_controller = NULL;
2682 static int qe_udc_suspend(struct platform_device *dev, pm_message_t state)
2687 static int qe_udc_resume(struct platform_device *dev)
2693 static int __devexit qe_udc_remove(struct platform_device *ofdev)
2698 DECLARE_COMPLETION(done);
2700 if (!udc_controller)
2703 udc_controller->done = &done;
2704 tasklet_disable(&udc_controller->rx_tasklet);
2706 if (udc_controller->nullmap) {
2707 dma_unmap_single(udc_controller->gadget.dev.parent,
2708 udc_controller->nullp, 256,
2710 udc_controller->nullp = DMA_ADDR_INVALID;
2712 dma_sync_single_for_cpu(udc_controller->gadget.dev.parent,
2713 udc_controller->nullp, 256,
2716 kfree(udc_controller->statusbuf);
2717 kfree(udc_controller->nullbuf);
2719 ep = &udc_controller->eps[0];
2720 cpm_muram_free(cpm_muram_offset(ep->rxbase));
2721 size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (USB_BDRING_LEN + 1);
2725 dma_unmap_single(udc_controller->gadget.dev.parent,
2728 ep->rxbuf_d = DMA_ADDR_INVALID;
2730 dma_sync_single_for_cpu(udc_controller->gadget.dev.parent,
2735 kfree(ep->rxbuffer);
2738 free_irq(udc_controller->usb_irq, udc_controller);
2739 irq_dispose_mapping(udc_controller->usb_irq);
2741 tasklet_kill(&udc_controller->rx_tasklet);
2743 iounmap(udc_controller->usb_regs);
2745 device_unregister(&udc_controller->gadget.dev);
2746 /* wait for release() of gadget.dev to free udc */
2747 wait_for_completion(&done);
2752 /*-------------------------------------------------------------------------*/
2753 static const struct of_device_id qe_udc_match[] __devinitconst = {
2755 .compatible = "fsl,mpc8323-qe-usb",
2756 .data = (void *)PORT_QE,
2759 .compatible = "fsl,mpc8360-qe-usb",
2760 .data = (void *)PORT_QE,
2763 .compatible = "fsl,mpc8272-cpm-usb",
2764 .data = (void *)PORT_CPM,
2769 MODULE_DEVICE_TABLE(of, qe_udc_match);
2771 static struct of_platform_driver udc_driver = {
2773 .name = (char *)driver_name,
2774 .owner = THIS_MODULE,
2775 .of_match_table = qe_udc_match,
2777 .probe = qe_udc_probe,
2778 .remove = __devexit_p(qe_udc_remove),
2780 .suspend = qe_udc_suspend,
2781 .resume = qe_udc_resume,
2785 static int __init qe_udc_init(void)
2787 printk(KERN_INFO "%s: %s, %s\n", driver_name, driver_desc,
2789 return of_register_platform_driver(&udc_driver);
2792 static void __exit qe_udc_exit(void)
2794 of_unregister_platform_driver(&udc_driver);
2797 module_init(qe_udc_init);
2798 module_exit(qe_udc_exit);
2800 MODULE_DESCRIPTION(DRIVER_DESC);
2801 MODULE_AUTHOR(DRIVER_AUTHOR);
2802 MODULE_LICENSE("GPL");