1 /* ==========================================================================
2 * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd_linux.c $
7 * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
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32 * ========================================================================== */
36 * This file implements the Peripheral Controller Driver.
38 * The Peripheral Controller Driver (PCD) is responsible for
39 * translating requests from the Function Driver into the appropriate
40 * actions on the DWC_otg controller. It isolates the Function Driver
41 * from the specifics of the controller by providing an API to the
44 * The Peripheral Controller Driver for Linux will implement the
45 * Gadget API, so that the existing Gadget drivers can be used.
46 * (Gadget Driver is the Linux terminology for a Function Driver.)
48 * The Linux Gadget API is defined in the header file
49 * <code><linux/usb_gadget.h></code>. The USB EP operations API is
50 * defined in the structure <code>usb_ep_ops</code> and the USB
51 * Controller API is defined in the structure
52 * <code>usb_gadget_ops</code>.
56 #include "dwc_otg_os_dep.h"
57 #include "dwc_otg_pcd_if.h"
58 #include "dwc_otg_pcd.h"
59 #include "dwc_otg_driver.h"
60 #include "dwc_otg_dbg.h"
61 #include "dwc_otg_attr.h"
63 #include "usbdev_rk.h"
64 static struct gadget_wrapper {
67 struct usb_gadget gadget;
68 struct usb_gadget_driver *driver;
71 struct usb_ep in_ep[16];
72 struct usb_ep out_ep[16];
76 /* Display the contents of the buffer */
77 extern void dump_msg(const u8 * buf, unsigned int length);
80 * Get the dwc_otg_pcd_ep_t* from usb_ep* pointer - NULL in case
81 * if the endpoint is not found
83 static struct dwc_otg_pcd_ep *ep_from_handle(dwc_otg_pcd_t * pcd, void *handle)
86 if (pcd->ep0.priv == handle) {
90 for (i = 0; i < MAX_EPS_CHANNELS - 1; i++) {
91 if (pcd->in_ep[i].priv == handle)
92 return &pcd->in_ep[i];
93 if (pcd->out_ep[i].priv == handle)
94 return &pcd->out_ep[i];
100 /* USB Endpoint Operations */
102 * The following sections briefly describe the behavior of the Gadget
103 * API endpoint operations implemented in the DWC_otg driver
104 * software. Detailed descriptions of the generic behavior of each of
105 * these functions can be found in the Linux header file
106 * include/linux/usb_gadget.h.
108 * The Gadget API provides wrapper functions for each of the function
109 * pointers defined in usb_ep_ops. The Gadget Driver calls the wrapper
110 * function, which then calls the underlying PCD function. The
111 * following sections are named according to the wrapper
112 * functions. Within each section, the corresponding DWC_otg PCD
113 * function name is specified.
118 * This function is called by the Gadget Driver for each EP to be
119 * configured for the current configuration (SET_CONFIGURATION).
121 * This function initializes the dwc_otg_ep_t data structure, and then
122 * calls dwc_otg_ep_activate.
124 static int ep_enable(struct usb_ep *usb_ep,
125 const struct usb_endpoint_descriptor *ep_desc)
129 DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, usb_ep, ep_desc);
131 if (!usb_ep || !ep_desc || ep_desc->bDescriptorType != USB_DT_ENDPOINT) {
132 DWC_WARN("%s, bad ep or descriptor\n", __func__);
135 if (usb_ep == &gadget_wrapper->ep0) {
136 DWC_WARN("%s, bad ep(0)\n", __func__);
140 /* Check FIFO size? */
141 if (!ep_desc->wMaxPacketSize) {
142 DWC_WARN("%s, bad %s maxpacket\n", __func__, usb_ep->name);
146 if (!gadget_wrapper->driver ||
147 gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
148 DWC_WARN("%s, bogus device state\n", __func__);
152 /* Delete after check - MAS */
154 nat = (uint32_t) ep_desc->wMaxPacketSize;
155 printk(KERN_ALERT "%s: nat (before) =%d\n", __func__, nat);
156 nat = (nat >> 11) & 0x03;
157 printk(KERN_ALERT "%s: nat (after) =%d\n", __func__, nat);
159 retval = dwc_otg_pcd_ep_enable(gadget_wrapper->pcd,
160 (const uint8_t *)ep_desc,
163 DWC_WARN("dwc_otg_pcd_ep_enable failed\n");
167 usb_ep->maxpacket = le16_to_cpu(ep_desc->wMaxPacketSize);
173 * This function is called when an EP is disabled due to disconnect or
174 * change in configuration. Any pending requests will terminate with a
175 * status of -ESHUTDOWN.
177 * This function modifies the dwc_otg_ep_t data structure for this EP,
178 * and then calls dwc_otg_ep_deactivate.
180 static int ep_disable(struct usb_ep *usb_ep)
184 DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, usb_ep);
186 DWC_DEBUGPL(DBG_PCD, "%s, %s not enabled\n", __func__,
187 usb_ep ? usb_ep->name : NULL);
191 retval = dwc_otg_pcd_ep_disable(gadget_wrapper->pcd, usb_ep);
200 * This function allocates a request object to use with the specified
203 * @param ep The endpoint to be used with with the request
204 * @param gfp_flags the GFP_* flags to use.
206 static struct usb_request *dwc_otg_pcd_alloc_request(struct usb_ep *ep,
209 struct usb_request *usb_req;
211 DWC_DEBUGPL(DBG_PCDV, "%s(%p,%d)\n", __func__, ep, gfp_flags);
213 DWC_WARN("%s() %s\n", __func__, "Invalid EP!\n");
216 usb_req = kmalloc(sizeof(*usb_req), gfp_flags);
218 DWC_WARN("%s() %s\n", __func__, "request allocation failed!\n");
221 memset(usb_req, 0, sizeof(*usb_req));
222 usb_req->dma = DWC_DMA_ADDR_INVALID;
228 * This function frees a request object.
230 * @param ep The endpoint associated with the request
231 * @param req The request being freed
233 static void dwc_otg_pcd_free_request(struct usb_ep *ep, struct usb_request *req)
235 DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, ep, req);
237 if (0 == ep || 0 == req) {
238 DWC_WARN("%s() %s\n", __func__,
239 "Invalid ep or req argument!\n");
246 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
248 * This function allocates an I/O buffer to be used for a transfer
249 * to/from the specified endpoint.
251 * @param usb_ep The endpoint to be used with with the request
252 * @param bytes The desired number of bytes for the buffer
253 * @param dma Pointer to the buffer's DMA address; must be valid
254 * @param gfp_flags the GFP_* flags to use.
255 * @return address of a new buffer or null is buffer could not be allocated.
257 static void *dwc_otg_pcd_alloc_buffer(struct usb_ep *usb_ep, unsigned bytes,
258 dma_addr_t * dma, gfp_t gfp_flags)
261 dwc_otg_pcd_t *pcd = 0;
263 pcd = gadget_wrapper->pcd;
265 DWC_DEBUGPL(DBG_PCDV, "%s(%p,%d,%p,%0x)\n", __func__, usb_ep, bytes,
268 /* Check dword alignment */
269 if ((bytes & 0x3UL) != 0) {
270 DWC_WARN("%s() Buffer size is not a multiple of"
271 "DWORD size (%d)", __func__, bytes);
274 buf = dma_alloc_coherent(NULL, bytes, dma, gfp_flags);
276 /* Check dword alignment */
277 if (((int)buf & 0x3UL) != 0) {
278 DWC_WARN("%s() Buffer is not DWORD aligned (%p)",
286 * This function frees an I/O buffer that was allocated by alloc_buffer.
288 * @param usb_ep the endpoint associated with the buffer
289 * @param buf address of the buffer
290 * @param dma The buffer's DMA address
291 * @param bytes The number of bytes of the buffer
293 static void dwc_otg_pcd_free_buffer(struct usb_ep *usb_ep, void *buf,
294 dma_addr_t dma, unsigned bytes)
296 dwc_otg_pcd_t *pcd = 0;
298 pcd = gadget_wrapper->pcd;
300 DWC_DEBUGPL(DBG_PCDV, "%s(%p,%0x,%d)\n", __func__, buf, dma, bytes);
302 dma_free_coherent(NULL, bytes, buf, dma);
307 * This function is used to submit an I/O Request to an EP.
309 * - When the request completes the request's completion callback
310 * is called to return the request to the driver.
311 * - An EP, except control EPs, may have multiple requests
313 * - Once submitted the request cannot be examined or modified.
314 * - Each request is turned into one or more packets.
315 * - A BULK EP can queue any amount of data; the transfer is
317 * - Zero length Packets are specified with the request 'zero'
320 static int ep_queue(struct usb_ep *usb_ep, struct usb_request *usb_req,
324 struct dwc_otg_pcd_ep *ep = NULL;
325 int retval = 0, is_isoc_ep = 0;
326 dma_addr_t dma_addr = DWC_DMA_ADDR_INVALID;
328 DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p,%d)\n",
329 __func__, usb_ep, usb_req, gfp_flags);
331 if (!usb_req || !usb_req->complete || !usb_req->buf) {
332 DWC_WARN("bad params\n");
337 DWC_WARN("bad ep\n");
341 pcd = gadget_wrapper->pcd;
342 if (!gadget_wrapper->driver ||
343 gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
344 DWC_DEBUGPL(DBG_PCDV, "gadget.speed=%d\n",
345 gadget_wrapper->gadget.speed);
346 DWC_WARN("bogus device state\n");
350 DWC_DEBUGPL(DBG_PCD, "%s queue req %p, len %d buf %p\n",
351 usb_ep->name, usb_req, usb_req->length, usb_req->buf);
353 usb_req->status = -EINPROGRESS;
356 ep = ep_from_handle(pcd, usb_ep);
360 is_isoc_ep = (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) ? 1 : 0;
361 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
362 dma_addr = usb_req->dma;
364 if (GET_CORE_IF(pcd)->dma_enable) {
365 // if (usb_req->length != 0/* && usb_req->dma == DWC_DMA_ADDR_INVALID*/) {
366 if(usb_req->dma == DWC_DMA_ADDR_INVALID){
367 dma_addr = dma_map_single(gadget_wrapper->gadget.dev.parent,
368 usb_req->buf, usb_req->length,
372 usb_req->dma = dma_addr;
378 #ifdef DWC_UTE_PER_IO
379 if (is_isoc_ep == 1) {
381 dwc_otg_pcd_xiso_ep_queue(pcd, usb_ep, usb_req->buf,
382 dma_addr, usb_req->length,
383 usb_req->zero, usb_req,
384 gfp_flags == GFP_ATOMIC ? 1 : 0,
392 retval = dwc_otg_pcd_ep_queue(pcd, usb_ep, usb_req->buf, dma_addr,
393 usb_req->length, usb_req->zero, usb_req,
394 gfp_flags == GFP_ATOMIC ? 1 : 0);
403 * This function cancels an I/O request from an EP.
405 static int ep_dequeue(struct usb_ep *usb_ep, struct usb_request *usb_req)
407 DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, usb_ep, usb_req);
409 if (!usb_ep || !usb_req) {
410 DWC_WARN("bad argument\n");
413 if (!gadget_wrapper->driver ||
414 gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
415 DWC_WARN("bogus device state\n");
418 if (dwc_otg_pcd_ep_dequeue(gadget_wrapper->pcd, usb_ep, usb_req)) {
426 * usb_ep_set_halt stalls an endpoint.
428 * usb_ep_clear_halt clears an endpoint halt and resets its data
431 * Both of these functions are implemented with the same underlying
432 * function. The behavior depends on the value argument.
434 * @param[in] usb_ep the Endpoint to halt or clear halt.
436 * - 0 means clear_halt.
437 * - 1 means set_halt,
438 * - 2 means clear stall lock flag.
439 * - 3 means set stall lock flag.
441 static int ep_halt(struct usb_ep *usb_ep, int value)
445 DWC_DEBUGPL(DBG_PCD, "HALT %s %d\n", usb_ep->name, value);
448 DWC_WARN("bad ep\n");
452 retval = dwc_otg_pcd_ep_halt(gadget_wrapper->pcd, usb_ep, value);
453 if (retval == -DWC_E_AGAIN) {
462 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
463 static int ep_wedge(struct usb_ep *usb_ep)
465 DWC_DEBUGPL(DBG_PCD, "WEDGE %s\n", usb_ep->name);
467 return ep_halt(usb_ep, 3);
473 * This function is used to submit an ISOC Transfer Request to an EP.
475 * - Every time a sync period completes the request's completion callback
476 * is called to provide data to the gadget driver.
477 * - Once submitted the request cannot be modified.
478 * - Each request is turned into periodic data packets untill ISO
479 * Transfer is stopped..
481 static int iso_ep_start(struct usb_ep *usb_ep, struct usb_iso_request *req,
486 if (!req || !req->process_buffer || !req->buf0 || !req->buf1) {
487 DWC_WARN("bad params\n");
492 DWC_PRINTF("bad params\n");
496 req->status = -EINPROGRESS;
499 dwc_otg_pcd_iso_ep_start(gadget_wrapper->pcd, usb_ep, req->buf0,
500 req->buf1, req->dma0, req->dma1,
501 req->sync_frame, req->data_pattern_frame,
504 flags & USB_REQ_ISO_ASAP ? -1 :
505 req->start_frame, req->buf_proc_intrvl,
506 req, gfp_flags == GFP_ATOMIC ? 1 : 0);
516 * This function stops ISO EP Periodic Data Transfer.
518 static int iso_ep_stop(struct usb_ep *usb_ep, struct usb_iso_request *req)
522 DWC_WARN("bad ep\n");
525 if (!gadget_wrapper->driver ||
526 gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
527 DWC_DEBUGPL(DBG_PCDV, "gadget.speed=%d\n",
528 gadget_wrapper->gadget.speed);
529 DWC_WARN("bogus device state\n");
532 dwc_otg_pcd_iso_ep_stop(gadget_wrapper->pcd, usb_ep, req);
540 static struct usb_iso_request *alloc_iso_request(struct usb_ep *ep,
541 int packets, gfp_t gfp_flags)
543 struct usb_iso_request *pReq = NULL;
546 req_size = sizeof(struct usb_iso_request);
548 (2 * packets * (sizeof(struct usb_gadget_iso_packet_descriptor)));
550 pReq = kmalloc(req_size, gfp_flags);
552 DWC_WARN("Can't allocate Iso Request\n");
555 pReq->iso_packet_desc0 = (void *)(pReq + 1);
557 pReq->iso_packet_desc1 = pReq->iso_packet_desc0 + packets;
562 static void free_iso_request(struct usb_ep *ep, struct usb_iso_request *req)
567 static struct usb_isoc_ep_ops dwc_otg_pcd_ep_ops = {
570 .disable = ep_disable,
572 .alloc_request = dwc_otg_pcd_alloc_request,
573 .free_request = dwc_otg_pcd_free_request,
575 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
576 .alloc_buffer = dwc_otg_pcd_alloc_buffer,
577 .free_buffer = dwc_otg_pcd_free_buffer,
581 .dequeue = ep_dequeue,
585 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
586 .set_wedge = ep_wedge,
592 .iso_ep_start = iso_ep_start,
593 .iso_ep_stop = iso_ep_stop,
594 .alloc_iso_request = alloc_iso_request,
595 .free_iso_request = free_iso_request,
600 static struct usb_ep_ops dwc_otg_pcd_ep_ops = {
602 .disable = ep_disable,
604 .alloc_request = dwc_otg_pcd_alloc_request,
605 .free_request = dwc_otg_pcd_free_request,
607 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
608 .alloc_buffer = dwc_otg_pcd_alloc_buffer,
609 .free_buffer = dwc_otg_pcd_free_buffer,
613 .dequeue = ep_dequeue,
617 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
618 .set_wedge = ep_wedge,
626 #endif /* _EN_ISOC_ */
627 /* Gadget Operations */
629 * The following gadget operations will be implemented in the DWC_otg
630 * PCD. Functions in the API that are not described below are not
633 * The Gadget API provides wrapper functions for each of the function
634 * pointers defined in usb_gadget_ops. The Gadget Driver calls the
635 * wrapper function, which then calls the underlying PCD function. The
636 * following sections are named according to the wrapper functions
637 * (except for ioctl, which doesn't have a wrapper function). Within
638 * each section, the corresponding DWC_otg PCD function name is
644 *Gets the USB Frame number of the last SOF.
646 static int get_frame_number(struct usb_gadget *gadget)
648 struct gadget_wrapper *d;
650 DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, gadget);
656 d = container_of(gadget, struct gadget_wrapper, gadget);
657 return dwc_otg_pcd_get_frame_number(d->pcd);
660 #ifdef CONFIG_USB_DWC_OTG_LPM
661 static int test_lpm_enabled(struct usb_gadget *gadget)
663 struct gadget_wrapper *d;
665 d = container_of(gadget, struct gadget_wrapper, gadget);
667 return dwc_otg_pcd_is_lpm_enabled(d->pcd);
669 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0)
670 static int test_besl_enabled(struct usb_gadget *gadget)
672 struct gadget_wrapper *d;
674 d = container_of(gadget, struct gadget_wrapper, gadget);
676 return dwc_otg_pcd_is_besl_enabled(d->pcd);
678 static int get_param_baseline_besl(struct usb_gadget *gadget)
680 struct gadget_wrapper *d;
682 d = container_of(gadget, struct gadget_wrapper, gadget);
684 return dwc_otg_pcd_get_param_baseline_besl(d->pcd);
686 static int get_param_deep_besl(struct usb_gadget *gadget)
688 struct gadget_wrapper *d;
690 d = container_of(gadget, struct gadget_wrapper, gadget);
692 return dwc_otg_pcd_get_param_deep_besl(d->pcd);
698 * Initiates Session Request Protocol (SRP) to wakeup the host if no
699 * session is in progress. If a session is already in progress, but
700 * the device is suspended, remote wakeup signaling is started.
703 static int wakeup(struct usb_gadget *gadget)
705 struct gadget_wrapper *d;
707 DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, gadget);
712 d = container_of(gadget, struct gadget_wrapper, gadget);
714 dwc_otg_pcd_wakeup(d->pcd);
717 static int dwc_otg_pcd_pullup(struct usb_gadget *_gadget, int is_on)
719 struct gadget_wrapper *d;
721 dwc_otg_core_if_t *core_if;
723 printk( "pcd_pullup, is_on %d\n",is_on);
727 d = container_of(_gadget, struct gadget_wrapper, gadget);
729 core_if = GET_CORE_IF(d->pcd);
733 //dwc_otg_pcd_pullup_enable(pcd);
735 pcd->conn_status = 0;
737 dwc_otg_pcd_pullup_disable(pcd);
738 pcd->conn_status = 2;
745 static int dwc_otg_gadget_start(struct usb_gadget *g,
746 struct usb_gadget_driver *driver)
748 DWC_DEBUGPL(DBG_PCD, "registering gadget driver '%s'\n", driver->driver.name);
749 if (gadget_wrapper == 0){
750 DWC_ERROR("ENODEV\n");
753 if (gadget_wrapper->driver != 0){
754 DWC_ERROR("EBUSY (%p)\n", gadget_wrapper->driver);
757 /* hook up the driver */
758 gadget_wrapper->driver = driver;
759 gadget_wrapper->gadget.dev.driver = &driver->driver;
761 DWC_DEBUGPL(DBG_PCD, "bind to driver %s\n", driver->driver.name);
766 static int dwc_otg_gadget_stop(struct usb_gadget *g,
767 struct usb_gadget_driver *driver)
772 static const struct usb_gadget_ops dwc_otg_pcd_ops = {
773 .get_frame = get_frame_number,
775 .pullup = dwc_otg_pcd_pullup,
776 #ifdef CONFIG_USB_DWC_OTG_LPM
777 .lpm_support = test_lpm_enabled,
778 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0)
779 .besl_support = test_besl_enabled,
780 .get_baseline_besl = get_param_baseline_besl,
781 .get_deep_besl = get_param_deep_besl,
784 .udc_start = dwc_otg_gadget_start,
785 .udc_stop = dwc_otg_gadget_stop,
787 // current versions must always be self-powered
792 static int _setup(dwc_otg_pcd_t * pcd, uint8_t * bytes)
794 int retval = -DWC_E_NOT_SUPPORTED;
795 if (gadget_wrapper->driver && gadget_wrapper->driver->setup) {
796 retval = gadget_wrapper->driver->setup(&gadget_wrapper->gadget,
797 (struct usb_ctrlrequest
801 if (retval == -ENOTSUPP) {
802 retval = -DWC_E_NOT_SUPPORTED;
803 } else if (retval < 0) {
804 retval = -DWC_E_INVALID;
811 static int _isoc_complete(dwc_otg_pcd_t * pcd, void *ep_handle,
812 void *req_handle, int proc_buf_num)
815 struct usb_gadget_iso_packet_descriptor *iso_packet = 0;
816 struct usb_iso_request *iso_req = req_handle;
819 iso_packet = iso_req->iso_packet_desc1;
821 iso_packet = iso_req->iso_packet_desc0;
824 dwc_otg_pcd_get_iso_packet_count(pcd, ep_handle, req_handle);
825 for (i = 0; i < packet_count; ++i) {
829 dwc_otg_pcd_get_iso_packet_params(pcd, ep_handle, req_handle,
830 i, &status, &actual, &offset);
837 DWC_PRINTF("unknown status in isoc packet\n");
841 iso_packet[i].status = status;
842 iso_packet[i].offset = offset;
843 iso_packet[i].actual_length = actual;
847 iso_req->process_buffer(ep_handle, iso_req);
851 #endif /* DWC_EN_ISOC */
853 #ifdef DWC_UTE_PER_IO
855 * Copy the contents of the extended request to the Linux usb_request's
856 * extended part and call the gadget's completion.
858 * @param pcd Pointer to the pcd structure
859 * @param ep_handle Void pointer to the usb_ep structure
860 * @param req_handle Void pointer to the usb_request structure
861 * @param status Request status returned from the portable logic
862 * @param ereq_port Void pointer to the extended request structure
863 * created in the the portable part that contains the
864 * results of the processed iso packets.
866 static int _xisoc_complete(dwc_otg_pcd_t * pcd, void *ep_handle,
867 void *req_handle, int32_t status, void *ereq_port)
869 struct dwc_ute_iso_req_ext *ereqorg = NULL;
870 struct dwc_iso_xreq_port *ereqport = NULL;
871 struct dwc_ute_iso_packet_descriptor *desc_org = NULL;
873 struct usb_request *req;
874 //struct dwc_ute_iso_packet_descriptor *
877 req = (struct usb_request *)req_handle;
878 ereqorg = &req->ext_req;
879 ereqport = (struct dwc_iso_xreq_port *)ereq_port;
880 desc_org = ereqorg->per_io_frame_descs;
882 if (req && req->complete) {
883 /* Copy the request data from the portable logic to our request */
884 for (i = 0; i < ereqport->pio_pkt_count; i++) {
885 desc_org[i].actual_length =
886 ereqport->per_io_frame_descs[i].actual_length;
888 ereqport->per_io_frame_descs[i].status;
892 case -DWC_E_SHUTDOWN:
893 req->status = -ESHUTDOWN;
896 req->status = -ECONNRESET;
899 req->status = -EINVAL;
902 req->status = -ETIMEDOUT;
905 req->status = status;
908 /* And call the gadget's completion */
909 req->complete(ep_handle, req);
914 #endif /* DWC_UTE_PER_IO */
916 static int _complete(dwc_otg_pcd_t * pcd, void *ep_handle,
917 void *req_handle, int32_t status, uint32_t actual)
919 struct usb_request *req = (struct usb_request *)req_handle;
920 struct device * dev = NULL;
921 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27)
922 struct dwc_otg_pcd_ep *ep = NULL;
925 if (req && req->complete) {
927 case -DWC_E_SHUTDOWN:
928 req->status = -ESHUTDOWN;
931 req->status = -ECONNRESET;
934 req->status = -EINVAL;
937 req->status = -ETIMEDOUT;
940 req->status = status;
944 req->actual = actual;
945 DWC_SPINUNLOCK(pcd->lock);
946 req->complete(ep_handle, req);
947 DWC_SPINLOCK(pcd->lock);
950 dev = &gadget_wrapper->pcd->otg_dev->os_dep.pdev->dev;
951 ep = ep_from_handle(pcd, ep_handle);
953 if (GET_CORE_IF(pcd)->dma_enable) {
954 // if (req->length != 0)
955 if(req->dma != DWC_DMA_ADDR_INVALID){
956 dma_unmap_single(gadget_wrapper->gadget.dev.parent,
957 req->dma, req->length,
961 req->dma = DWC_DMA_ADDR_INVALID;
967 static int _connect(dwc_otg_pcd_t * pcd, int speed)
969 gadget_wrapper->gadget.speed = speed;
973 static int _disconnect(dwc_otg_pcd_t * pcd)
975 if (gadget_wrapper->driver && gadget_wrapper->driver->disconnect) {
976 gadget_wrapper->driver->disconnect(&gadget_wrapper->gadget);
981 static int _resume(dwc_otg_pcd_t * pcd)
983 if (gadget_wrapper->driver && gadget_wrapper->driver->resume) {
984 gadget_wrapper->driver->resume(&gadget_wrapper->gadget);
990 static int _suspend(dwc_otg_pcd_t * pcd)
992 if (gadget_wrapper->driver && gadget_wrapper->driver->suspend) {
993 gadget_wrapper->driver->suspend(&gadget_wrapper->gadget);
999 * This function updates the otg values in the gadget structure.
1001 static int _hnp_changed(dwc_otg_pcd_t * pcd)
1004 if (!gadget_wrapper->gadget.is_otg)
1007 gadget_wrapper->gadget.b_hnp_enable = get_b_hnp_enable(pcd);
1008 gadget_wrapper->gadget.a_hnp_support = get_a_hnp_support(pcd);
1009 gadget_wrapper->gadget.a_alt_hnp_support = get_a_alt_hnp_support(pcd);
1013 static int _reset(dwc_otg_pcd_t * pcd)
1019 static int _cfi_setup(dwc_otg_pcd_t * pcd, void *cfi_req)
1021 int retval = -DWC_E_INVALID;
1022 if (gadget_wrapper->driver->cfi_feature_setup) {
1024 gadget_wrapper->driver->
1025 cfi_feature_setup(&gadget_wrapper->gadget,
1026 (struct cfi_usb_ctrlrequest *)cfi_req);
1033 static const struct dwc_otg_pcd_function_ops fops = {
1034 .complete = _complete,
1036 .isoc_complete = _isoc_complete,
1039 .disconnect = _disconnect,
1040 .connect = _connect,
1042 .suspend = _suspend,
1043 .hnp_changed = _hnp_changed,
1046 .cfi_setup = _cfi_setup,
1048 #ifdef DWC_UTE_PER_IO
1049 .xisoc_complete = _xisoc_complete,
1054 * This function is the top level PCD interrupt handler.
1056 static irqreturn_t dwc_otg_pcd_irq(int irq, void *dev)
1058 dwc_otg_pcd_t *pcd = dev;
1059 int32_t retval = IRQ_NONE;
1061 retval = dwc_otg_pcd_handle_intr(pcd);
1063 //S3C2410X_CLEAR_EINTPEND();
1065 return IRQ_RETVAL(retval);
1069 * This function initialized the usb_ep structures to there default
1072 * @param d Pointer on gadget_wrapper.
1074 void gadget_add_eps(struct gadget_wrapper *d)
1076 static const char *names[] = {
1113 int8_t dev_endpoints;
1115 DWC_DEBUGPL(DBG_PCDV, "%s\n", __func__);
1117 INIT_LIST_HEAD(&d->gadget.ep_list);
1118 d->gadget.ep0 = &d->ep0;
1119 d->gadget.speed = USB_SPEED_UNKNOWN;
1120 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)
1121 d->gadget.max_speed = USB_SPEED_HIGH;
1124 INIT_LIST_HEAD(&d->gadget.ep0->ep_list);
1127 * Initialize the EP0 structure.
1131 /* Init the usb_ep structure. */
1132 ep->name = names[0];
1133 ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
1136 * @todo NGS: What should the max packet size be set to
1137 * here? Before EP type is set?
1139 ep->maxpacket = MAX_PACKET_SIZE;
1140 dwc_otg_pcd_ep_enable(d->pcd, NULL, ep);
1142 list_add_tail(&ep->ep_list, &d->gadget.ep_list);
1145 * Initialize the EP structures.
1147 dev_endpoints = d->pcd->core_if->dev_if->num_in_eps;
1149 for (i = 0; i < dev_endpoints; i++) {
1152 /* Init the usb_ep structure. */
1153 ep->name = names[d->pcd->in_ep[i].dwc_ep.num];
1154 ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
1157 * @todo NGS: What should the max packet size be set to
1158 * here? Before EP type is set?
1160 ep->maxpacket = MAX_PACKET_SIZE;
1161 list_add_tail(&ep->ep_list, &d->gadget.ep_list);
1164 dev_endpoints = d->pcd->core_if->dev_if->num_out_eps;
1166 for (i = 0; i < dev_endpoints; i++) {
1169 /* Init the usb_ep structure. */
1170 ep->name = names[15 + d->pcd->out_ep[i].dwc_ep.num];
1171 ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
1174 * @todo NGS: What should the max packet size be set to
1175 * here? Before EP type is set?
1177 ep->maxpacket = MAX_PACKET_SIZE;
1179 list_add_tail(&ep->ep_list, &d->gadget.ep_list);
1182 /* remove ep0 from the list. There is a ep0 pointer. */
1183 list_del_init(&d->ep0.ep_list);
1185 d->ep0.maxpacket = MAX_EP0_SIZE;
1189 * This function releases the Gadget device.
1190 * required by device_unregister().
1192 * @todo Should this do something? Should it free the PCD?
1194 static void dwc_otg_pcd_gadget_release(struct device *dev)
1196 DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, dev);
1199 static struct gadget_wrapper *alloc_wrapper(
1201 struct platform_device *_dev
1204 static char pcd_name[] = "dwc_otg_pcd";
1206 dwc_otg_device_t *otg_dev = dwc_get_device_platform_data(_dev);
1207 struct gadget_wrapper *d;
1210 d = DWC_ALLOC(sizeof(*d));
1215 memset(d, 0, sizeof(*d));
1217 d->gadget.name = pcd_name;
1218 d->pcd = otg_dev->pcd;
1220 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
1221 strcpy(d->gadget.dev.bus_id, "gadget");
1223 dev_set_name(&d->gadget.dev, "%s", "gadget");
1226 d->gadget.dev.parent = &_dev->dev;
1227 d->gadget.dev.release = dwc_otg_pcd_gadget_release;
1228 d->gadget.ops = &dwc_otg_pcd_ops;
1229 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,0,0)
1230 d->gadget.is_dualspeed = dwc_otg_pcd_is_dualspeed(otg_dev->pcd);
1232 d->gadget.is_otg = dwc_otg_pcd_is_otg(otg_dev->pcd);
1234 d->gadget.max_speed = USB_SPEED_HIGH;
1236 d->pcd->conn_en = 0;
1237 /* Register the gadget device */
1238 retval = usb_add_gadget_udc(&_dev->dev, &d->gadget);
1240 DWC_ERROR("device_register failed\n");
1248 static void free_wrapper(struct gadget_wrapper *d)
1251 /* should have been done already by driver model core */
1252 DWC_WARN("driver '%s' is still registered\n",
1253 d->driver->driver.name);
1254 usb_gadget_unregister_driver(d->driver);
1257 usb_del_gadget_udc(&d->gadget);
1261 static void dwc_otg_pcd_work_init(dwc_otg_pcd_t *pcd, struct platform_device *dev);
1264 * This function initialized the PCD portion of the driver.
1267 int pcd_init(struct platform_device *_dev)
1270 dwc_otg_device_t *otg_dev = dwc_get_device_platform_data(_dev);
1274 DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _dev);
1276 otg_dev->pcd = dwc_otg_pcd_init(otg_dev->core_if);
1277 printk("pcd_init otg_dev = %p\n",otg_dev);
1279 if (!otg_dev->pcd) {
1280 DWC_ERROR("dwc_otg_pcd_init failed\n");
1284 otg_dev->pcd->otg_dev = otg_dev;
1285 gadget_wrapper = alloc_wrapper(_dev);
1288 * Initialize EP structures
1290 gadget_add_eps(gadget_wrapper);
1292 * Setup interupt handler
1294 irq = platform_get_irq(_dev,0);
1295 DWC_DEBUGPL(DBG_ANY, "registering handler for irq%d\n", irq);
1296 retval = request_irq(irq, dwc_otg_pcd_irq,
1298 gadget_wrapper->gadget.name, otg_dev->pcd);
1300 DWC_ERROR("request of irq%d failed\n", irq);
1301 free_wrapper(gadget_wrapper);
1305 dwc_otg_pcd_start(gadget_wrapper->pcd, &fops);
1307 dwc_otg_pcd_work_init(otg_dev->pcd, _dev);
1317 struct platform_device *_dev
1321 dwc_otg_device_t *otg_dev = dwc_get_device_platform_data(_dev);
1322 dwc_otg_pcd_t *pcd = otg_dev->pcd;
1325 DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _dev);
1330 irq = platform_get_irq(_dev,0);
1332 free_wrapper(gadget_wrapper);
1333 dwc_otg_pcd_remove(otg_dev->pcd);
1338 * This function registers a gadget driver with the PCD.
1340 * When a driver is successfully registered, it will receive control
1341 * requests including set_configuration(), which enables non-control
1342 * requests. then usb traffic follows until a disconnect is reported.
1343 * then a host may connect again, or the driver might get unbound.
1345 * @param driver The driver being registered
1346 * @param bind The bind function of gadget driver
1349 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
1350 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
1352 int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
1353 int (*bind)(struct usb_gadget *))
1358 DWC_DEBUGPL(DBG_PCD, "registering gadget driver '%s'\n",
1359 driver->driver.name);
1362 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,3,0)
1363 driver->speed == USB_SPEED_UNKNOWN ||
1365 driver->max_speed == USB_SPEED_UNKNOWN ||
1367 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
1372 !driver->unbind || !driver->disconnect || !driver->setup) {
1373 DWC_DEBUGPL(DBG_PCDV, "EINVAL\n");
1376 if (gadget_wrapper == 0) {
1377 DWC_DEBUGPL(DBG_PCDV, "ENODEV\n");
1380 if (gadget_wrapper->driver != 0) {
1381 DWC_DEBUGPL(DBG_PCDV, "EBUSY (%p)\n", gadget_wrapper->driver);
1385 /* hook up the driver */
1386 gadget_wrapper->driver = driver;
1387 gadget_wrapper->gadget.dev.driver = &driver->driver;
1389 DWC_DEBUGPL(DBG_PCD, "bind to driver %s\n", driver->driver.name);
1390 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
1391 retval = driver->bind(&gadget_wrapper->gadget);
1393 retval = bind(&gadget_wrapper->gadget);
1396 DWC_ERROR("bind to driver %s --> error %d\n",
1397 driver->driver.name, retval);
1398 gadget_wrapper->driver = 0;
1399 gadget_wrapper->gadget.dev.driver = 0;
1402 DWC_DEBUGPL(DBG_ANY, "registered gadget driver '%s'\n",
1403 driver->driver.name);
1406 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
1407 EXPORT_SYMBOL(usb_gadget_register_driver);
1409 EXPORT_SYMBOL(usb_gadget_probe_driver);
1413 * This function unregisters a gadget driver
1415 * @param driver The driver being unregistered
1417 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
1419 //DWC_DEBUGPL(DBG_PCDV,"%s(%p)\n", __func__, _driver);
1421 if (gadget_wrapper == 0) {
1422 DWC_DEBUGPL(DBG_ANY, "%s Return(%d): s_pcd==0\n", __func__,
1426 if (driver == 0 || driver != gadget_wrapper->driver) {
1427 DWC_DEBUGPL(DBG_ANY, "%s Return(%d): driver?\n", __func__,
1432 driver->unbind(&gadget_wrapper->gadget);
1433 gadget_wrapper->driver = 0;
1435 DWC_DEBUGPL(DBG_ANY, "unregistered driver '%s'\n", driver->driver.name);
1439 EXPORT_SYMBOL(usb_gadget_unregister_driver);
1443 /************************ for RK platform ************************/
1445 void dwc_otg_msc_lock(dwc_otg_pcd_t *pcd)
1447 unsigned long flags;
1448 local_irq_save(flags);
1449 wake_lock(&pcd->wake_lock);
1450 local_irq_restore(flags);
1453 void dwc_otg_msc_unlock(dwc_otg_pcd_t *pcd)
1455 unsigned long flags;
1456 local_irq_save(flags);
1457 wake_unlock(&pcd->wake_lock);
1458 local_irq_restore(flags);
1461 unsigned int dwc_otg_battery_detect(bool det_type)
1463 printk("%s\n",__func__);
1467 static void dwc_phy_reconnect(struct work_struct *work)
1470 dwc_otg_core_if_t *core_if;
1471 gotgctl_data_t gctrl;
1472 dctl_data_t dctl = {.d32=0};
1473 struct dwc_otg_platform_data *pldata;
1475 pcd = container_of(work, dwc_otg_pcd_t, reconnect.work);
1476 pldata = pcd->otg_dev->pldata;
1477 core_if = GET_CORE_IF(pcd);
1478 gctrl.d32 = DWC_READ_REG32( &core_if->core_global_regs->gotgctl );
1480 if(gctrl.b.bsesvld){
1482 pldata->soft_reset();
1485 * Enable the global interrupt after all the interrupt
1486 * handlers are installed.
1488 dctl.d32 = DWC_READ_REG32( &core_if->dev_if->dev_global_regs->dctl );
1489 dctl.b.sftdiscon = 0;
1490 DWC_WRITE_REG32( &core_if->dev_if->dev_global_regs->dctl, dctl.d32 );
1491 printk("*******************soft connect!!!*******************\n");
1495 static void dwc_otg_pcd_check_vbus_work( struct work_struct *work )
1497 dwc_otg_pcd_t * _pcd = container_of(work, dwc_otg_pcd_t, check_vbus_work.work);
1498 struct dwc_otg_device* otg_dev = _pcd->otg_dev;
1499 struct dwc_otg_platform_data *pldata = otg_dev->pldata;
1500 unsigned long flags;
1502 local_irq_save(flags);
1504 if(!pldata->get_status(USB_STATUS_ID)){
1505 // id low, host mode
1506 if( pldata->dwc_otg_uart_mode != NULL ){
1507 //exit phy bypass to uart & enable usb phy
1508 pldata->dwc_otg_uart_mode( pldata, PHY_USB_MODE);
1510 if( pldata->phy_status){
1511 pldata->clock_enable( pldata, 1);
1512 pldata->phy_suspend(pldata, USB_PHY_ENABLED);
1514 if( pldata->bc_detect_cb != NULL )
1515 pldata->bc_detect_cb( _pcd->vbus_status = USB_BC_TYPE_DISCNT );
1517 _pcd->vbus_status = USB_BC_TYPE_DISCNT;
1518 dwc_otg_enable_global_interrupts(otg_dev->core_if);
1520 }else if(pldata->get_status(USB_STATUS_BVABLID)){
1521 /* if usb not connect before ,then start connect */
1522 if( _pcd->vbus_status == USB_BC_TYPE_DISCNT ) {
1523 printk("*******************vbus detect*********************\n");
1524 // if( pldata->bc_detect_cb != NULL )
1525 // pldata->bc_detect_cb( _pcd->vbus_status = usb_battery_charger_detect(1) );
1527 _pcd->vbus_status = USB_BC_TYPE_SDP;
1531 else if( pldata->phy_status == USB_PHY_ENABLED ){
1532 // do not allow to connect, suspend phy
1533 pldata->phy_suspend(pldata, USB_PHY_SUSPEND);
1535 pldata->clock_enable( pldata, 0);
1537 }else if((_pcd->conn_en)&&(_pcd->conn_status>=0)&&(_pcd->conn_status <2)){
1538 printk("******************soft reconnect********************\n");
1540 }else if(_pcd->conn_status == 2){
1541 /* release pcd->wake_lock if fail to connect,
1542 * allow system to enter second sleep.
1544 dwc_otg_msc_unlock(_pcd);
1545 _pcd->conn_status++;
1546 if( pldata->bc_detect_cb != NULL ){
1547 rk_usb_charger_status = USB_BC_TYPE_DCP;
1548 pldata->bc_detect_cb( _pcd->vbus_status = USB_BC_TYPE_DCP );
1550 _pcd->vbus_status = USB_BC_TYPE_DCP;
1551 rk_usb_charger_status = USB_BC_TYPE_DCP;
1553 /* fail to connect, suspend usb phy and disable clk */
1554 if( pldata->phy_status == USB_PHY_ENABLED ){
1555 pldata->phy_suspend(pldata, USB_PHY_SUSPEND);
1557 pldata->clock_enable( pldata, 0);
1561 if( pldata->bc_detect_cb != NULL )
1562 pldata->bc_detect_cb( _pcd->vbus_status = USB_BC_TYPE_DISCNT );
1564 _pcd->vbus_status = USB_BC_TYPE_DISCNT;
1566 if(_pcd->conn_status){
1567 _pcd->conn_status = 0;
1570 if( pldata->phy_status == USB_PHY_ENABLED ){
1571 /* release wake lock */
1572 dwc_otg_msc_unlock(_pcd);
1573 /* no vbus detect here , close usb phy */
1574 pldata->phy_suspend(pldata, USB_PHY_SUSPEND);
1576 pldata->clock_enable( pldata, 0);
1579 /* usb phy bypass to uart mode */
1580 if( pldata->dwc_otg_uart_mode != NULL )
1581 pldata->dwc_otg_uart_mode( pldata, PHY_UART_MODE);
1584 schedule_delayed_work(&_pcd->check_vbus_work, HZ);
1585 local_irq_restore(flags);
1590 if( pldata->phy_status)
1592 pldata->clock_enable(pldata, 1);
1593 pldata->phy_suspend(pldata, USB_PHY_ENABLED);
1596 if(_pcd->conn_status==0)
1597 dwc_otg_msc_lock(_pcd);
1599 schedule_delayed_work( &_pcd->reconnect , 8 ); /* delay 8 jiffies */
1600 schedule_delayed_work(&_pcd->check_vbus_work, (HZ<<2));
1601 local_irq_restore(flags);
1606 void dwc_otg_pcd_start_check_vbus_work(dwc_otg_pcd_t * pcd)
1609 * when receive reset int,the vbus state may not be update,so
1610 * always start vbus work here.
1612 schedule_delayed_work(&pcd->check_vbus_work, (HZ*2));
1616 * 20091228,HSL@RK,to get the current vbus status.
1618 int dwc_vbus_status( void )
1620 #ifdef CONFIG_USB20_OTG
1621 dwc_otg_pcd_t *pcd = 0;
1623 pcd = gadget_wrapper->pcd;
1629 return pcd->vbus_status ;
1634 EXPORT_SYMBOL(dwc_vbus_status);
1636 static void dwc_otg_pcd_work_init(dwc_otg_pcd_t *pcd, struct platform_device *dev)
1639 struct dwc_otg_device* otg_dev = pcd->otg_dev;
1640 struct dwc_otg_platform_data *pldata = otg_dev->pldata;
1641 pcd->vbus_status = USB_BC_TYPE_DISCNT;
1642 pcd->phy_suspend = USB_PHY_ENABLED;
1644 INIT_DELAYED_WORK(&pcd->reconnect , dwc_phy_reconnect);
1645 INIT_DELAYED_WORK(&pcd->check_vbus_work , dwc_otg_pcd_check_vbus_work);
1647 wake_lock_init(&pcd->wake_lock, WAKE_LOCK_SUSPEND, "usb_pcd");
1649 if(dwc_otg_is_device_mode(pcd->core_if) &&
1650 (otg_dev->core_if->usb_mode != USB_MODE_FORCE_HOST)){
1651 #ifdef CONFIG_RK_USB_UART
1652 if(pldata->get_status(USB_STATUS_BVABLID)){
1653 //enter usb phy mode
1654 pldata->dwc_otg_uart_mode(pldata, PHY_USB_MODE);
1656 //usb phy bypass to uart mode
1657 pldata->dwc_otg_uart_mode(pldata, PHY_UART_MODE);
1660 schedule_delayed_work(&pcd->check_vbus_work, (HZ<<4));
1662 #ifdef CONFIG_RK_USB_UART
1663 else if(pldata->dwc_otg_uart_mode != NULL)
1664 //host mode,enter usb phy mode
1665 pldata->dwc_otg_uart_mode(pldata, PHY_USB_MODE);
1670 #endif /* DWC_HOST_ONLY */