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) {*/
366 if (usb_req->dma == DWC_DMA_ADDR_INVALID) {
368 dma_map_single(gadget_wrapper->gadget.dev.parent,
369 usb_req->buf, usb_req->length,
371 is_in ? DMA_TO_DEVICE :
373 usb_req->dma = dma_addr;
379 #ifdef DWC_UTE_PER_IO
380 if (is_isoc_ep == 1) {
382 dwc_otg_pcd_xiso_ep_queue(pcd, usb_ep, usb_req->buf,
383 dma_addr, usb_req->length,
384 usb_req->zero, usb_req,
385 gfp_flags == GFP_ATOMIC ? 1 : 0,
393 retval = dwc_otg_pcd_ep_queue(pcd, usb_ep, usb_req->buf, dma_addr,
394 usb_req->length, usb_req->zero, usb_req,
395 gfp_flags == GFP_ATOMIC ? 1 : 0);
404 * This function cancels an I/O request from an EP.
406 static int ep_dequeue(struct usb_ep *usb_ep, struct usb_request *usb_req)
408 DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, usb_ep, usb_req);
410 if (!usb_ep || !usb_req) {
411 DWC_WARN("bad argument\n");
414 if (!gadget_wrapper->driver ||
415 gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
416 DWC_WARN("bogus device state\n");
419 if (dwc_otg_pcd_ep_dequeue(gadget_wrapper->pcd, usb_ep, usb_req)) {
427 * usb_ep_set_halt stalls an endpoint.
429 * usb_ep_clear_halt clears an endpoint halt and resets its data
432 * Both of these functions are implemented with the same underlying
433 * function. The behavior depends on the value argument.
435 * @param[in] usb_ep the Endpoint to halt or clear halt.
437 * - 0 means clear_halt.
438 * - 1 means set_halt,
439 * - 2 means clear stall lock flag.
440 * - 3 means set stall lock flag.
442 static int ep_halt(struct usb_ep *usb_ep, int value)
446 DWC_DEBUGPL(DBG_PCD, "HALT %s %d\n", usb_ep->name, value);
449 DWC_WARN("bad ep\n");
453 retval = dwc_otg_pcd_ep_halt(gadget_wrapper->pcd, usb_ep, value);
454 if (retval == -DWC_E_AGAIN) {
463 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
464 static int ep_wedge(struct usb_ep *usb_ep)
466 DWC_DEBUGPL(DBG_PCD, "WEDGE %s\n", usb_ep->name);
468 return ep_halt(usb_ep, 3);
474 * This function is used to submit an ISOC Transfer Request to an EP.
476 * - Every time a sync period completes the request's completion callback
477 * is called to provide data to the gadget driver.
478 * - Once submitted the request cannot be modified.
479 * - Each request is turned into periodic data packets untill ISO
480 * Transfer is stopped..
482 static int iso_ep_start(struct usb_ep *usb_ep, struct usb_iso_request *req,
487 if (!req || !req->process_buffer || !req->buf0 || !req->buf1) {
488 DWC_WARN("bad params\n");
493 DWC_PRINTF("bad params\n");
497 req->status = -EINPROGRESS;
500 dwc_otg_pcd_iso_ep_start(gadget_wrapper->pcd, usb_ep, req->buf0,
501 req->buf1, req->dma0, req->dma1,
502 req->sync_frame, req->data_pattern_frame,
504 req->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);
670 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)
671 static int test_besl_enabled(struct usb_gadget *gadget)
673 struct gadget_wrapper *d;
675 d = container_of(gadget, struct gadget_wrapper, gadget);
677 return dwc_otg_pcd_is_besl_enabled(d->pcd);
680 static int get_param_baseline_besl(struct usb_gadget *gadget)
682 struct gadget_wrapper *d;
684 d = container_of(gadget, struct gadget_wrapper, gadget);
686 return dwc_otg_pcd_get_param_baseline_besl(d->pcd);
689 static int get_param_deep_besl(struct usb_gadget *gadget)
691 struct gadget_wrapper *d;
693 d = container_of(gadget, struct gadget_wrapper, gadget);
695 return dwc_otg_pcd_get_param_deep_besl(d->pcd);
701 * Initiates Session Request Protocol (SRP) to wakeup the host if no
702 * session is in progress. If a session is already in progress, but
703 * the device is suspended, remote wakeup signaling is started.
706 static int wakeup(struct usb_gadget *gadget)
708 struct gadget_wrapper *d;
710 DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, gadget);
715 d = container_of(gadget, struct gadget_wrapper, gadget);
717 dwc_otg_pcd_wakeup(d->pcd);
721 static int dwc_otg_pcd_pullup(struct usb_gadget *_gadget, int is_on)
723 struct gadget_wrapper *d;
725 dwc_otg_core_if_t *core_if;
727 printk("pcd_pullup, is_on %d\n", is_on);
731 d = container_of(_gadget, struct gadget_wrapper, gadget);
733 core_if = GET_CORE_IF(d->pcd);
737 /* dwc_otg_pcd_pullup_enable(pcd); */
739 pcd->conn_status = 0;
741 dwc_otg_pcd_pullup_disable(pcd);
742 pcd->conn_status = 2;
749 static int dwc_otg_gadget_start(struct usb_gadget *g,
750 struct usb_gadget_driver *driver)
752 DWC_DEBUGPL(DBG_PCD, "registering gadget driver '%s'\n",
753 driver->driver.name);
754 if (gadget_wrapper == 0) {
755 DWC_ERROR("ENODEV\n");
758 if (gadget_wrapper->driver != 0) {
759 DWC_ERROR("EBUSY (%p)\n", gadget_wrapper->driver);
762 /* hook up the driver */
763 gadget_wrapper->driver = driver;
764 gadget_wrapper->gadget.dev.driver = &driver->driver;
766 DWC_DEBUGPL(DBG_PCD, "bind to driver %s\n", driver->driver.name);
771 static int dwc_otg_gadget_stop(struct usb_gadget *g,
772 struct usb_gadget_driver *driver)
777 static const struct usb_gadget_ops dwc_otg_pcd_ops = {
778 .get_frame = get_frame_number,
780 .pullup = dwc_otg_pcd_pullup,
781 #ifdef CONFIG_USB_DWC_OTG_LPM
782 .lpm_support = test_lpm_enabled,
783 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)
784 .besl_support = test_besl_enabled,
785 .get_baseline_besl = get_param_baseline_besl,
786 .get_deep_besl = get_param_deep_besl,
789 .udc_start = dwc_otg_gadget_start,
790 .udc_stop = dwc_otg_gadget_stop,
792 /* current versions must always be self-powered */
795 static int _setup(dwc_otg_pcd_t *pcd, uint8_t *bytes)
797 int retval = -DWC_E_NOT_SUPPORTED;
798 if (gadget_wrapper->driver && gadget_wrapper->driver->setup) {
799 retval = gadget_wrapper->driver->setup(&gadget_wrapper->gadget,
800 (struct usb_ctrlrequest
804 if (retval == -ENOTSUPP) {
805 retval = -DWC_E_NOT_SUPPORTED;
806 } else if (retval < 0) {
807 retval = -DWC_E_INVALID;
814 static int _isoc_complete(dwc_otg_pcd_t *pcd, void *ep_handle,
815 void *req_handle, int proc_buf_num)
818 struct usb_gadget_iso_packet_descriptor *iso_packet = 0;
819 struct usb_iso_request *iso_req = req_handle;
822 iso_packet = iso_req->iso_packet_desc1;
824 iso_packet = iso_req->iso_packet_desc0;
827 dwc_otg_pcd_get_iso_packet_count(pcd, ep_handle, req_handle);
828 for (i = 0; i < packet_count; ++i) {
832 dwc_otg_pcd_get_iso_packet_params(pcd, ep_handle, req_handle,
833 i, &status, &actual, &offset);
840 DWC_PRINTF("unknown status in isoc packet\n");
844 iso_packet[i].status = status;
845 iso_packet[i].offset = offset;
846 iso_packet[i].actual_length = actual;
850 iso_req->process_buffer(ep_handle, iso_req);
854 #endif /* DWC_EN_ISOC */
856 #ifdef DWC_UTE_PER_IO
858 * Copy the contents of the extended request to the Linux usb_request's
859 * extended part and call the gadget's completion.
861 * @param pcd Pointer to the pcd structure
862 * @param ep_handle Void pointer to the usb_ep structure
863 * @param req_handle Void pointer to the usb_request structure
864 * @param status Request status returned from the portable logic
865 * @param ereq_port Void pointer to the extended request structure
866 * created in the the portable part that contains the
867 * results of the processed iso packets.
869 static int _xisoc_complete(dwc_otg_pcd_t *pcd, void *ep_handle,
870 void *req_handle, int32_t status, void *ereq_port)
872 struct dwc_ute_iso_req_ext *ereqorg = NULL;
873 struct dwc_iso_xreq_port *ereqport = NULL;
874 struct dwc_ute_iso_packet_descriptor *desc_org = NULL;
876 struct usb_request *req;
877 /* struct dwc_ute_iso_packet_descriptor * */
878 /* int status = 0; */
880 req = (struct usb_request *)req_handle;
881 ereqorg = &req->ext_req;
882 ereqport = (struct dwc_iso_xreq_port *)ereq_port;
883 desc_org = ereqorg->per_io_frame_descs;
885 if (req && req->complete) {
886 /* Copy the request data from the portable logic to our request */
887 for (i = 0; i < ereqport->pio_pkt_count; i++) {
888 desc_org[i].actual_length =
889 ereqport->per_io_frame_descs[i].actual_length;
891 ereqport->per_io_frame_descs[i].status;
895 case -DWC_E_SHUTDOWN:
896 req->status = -ESHUTDOWN;
899 req->status = -ECONNRESET;
902 req->status = -EINVAL;
905 req->status = -ETIMEDOUT;
908 req->status = status;
911 /* And call the gadget's completion */
912 req->complete(ep_handle, req);
917 #endif /* DWC_UTE_PER_IO */
919 static int _complete(dwc_otg_pcd_t *pcd, void *ep_handle,
920 void *req_handle, int32_t status, uint32_t actual)
922 struct usb_request *req = (struct usb_request *)req_handle;
923 struct device *dev = NULL;
924 #if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27)
925 struct dwc_otg_pcd_ep *ep = NULL;
928 if (req && req->complete) {
930 case -DWC_E_SHUTDOWN:
931 req->status = -ESHUTDOWN;
934 req->status = -ECONNRESET;
937 req->status = -EINVAL;
940 req->status = -ETIMEDOUT;
943 req->status = status;
947 req->actual = actual;
948 DWC_SPINUNLOCK(pcd->lock);
949 req->complete(ep_handle, req);
950 DWC_SPINLOCK(pcd->lock);
953 dev = &gadget_wrapper->pcd->otg_dev->os_dep.pdev->dev;
954 ep = ep_from_handle(pcd, ep_handle);
956 if (GET_CORE_IF(pcd)->dma_enable) {
957 /* if (req->length != 0) */
958 if (req->dma != DWC_DMA_ADDR_INVALID) {
959 dma_unmap_single(gadget_wrapper->gadget.dev.parent,
960 req->dma, req->length,
962 ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
963 req->dma = DWC_DMA_ADDR_INVALID;
969 static int _connect(dwc_otg_pcd_t *pcd, int speed)
971 gadget_wrapper->gadget.speed = speed;
975 static int _disconnect(dwc_otg_pcd_t *pcd)
977 if (gadget_wrapper->driver && gadget_wrapper->driver->disconnect) {
978 gadget_wrapper->driver->disconnect(&gadget_wrapper->gadget);
983 static int _resume(dwc_otg_pcd_t *pcd)
985 if (gadget_wrapper->driver && gadget_wrapper->driver->resume) {
986 gadget_wrapper->driver->resume(&gadget_wrapper->gadget);
992 static int _suspend(dwc_otg_pcd_t *pcd)
994 if (gadget_wrapper->driver && gadget_wrapper->driver->suspend) {
995 gadget_wrapper->driver->suspend(&gadget_wrapper->gadget);
1001 * This function updates the otg values in the gadget structure.
1003 static int _hnp_changed(dwc_otg_pcd_t *pcd)
1006 if (!gadget_wrapper->gadget.is_otg)
1009 gadget_wrapper->gadget.b_hnp_enable = get_b_hnp_enable(pcd);
1010 gadget_wrapper->gadget.a_hnp_support = get_a_hnp_support(pcd);
1011 gadget_wrapper->gadget.a_alt_hnp_support = get_a_alt_hnp_support(pcd);
1015 static int _reset(dwc_otg_pcd_t *pcd)
1021 static int _cfi_setup(dwc_otg_pcd_t *pcd, void *cfi_req)
1023 int retval = -DWC_E_INVALID;
1024 if (gadget_wrapper->driver->cfi_feature_setup) {
1026 gadget_wrapper->driver->cfi_feature_setup(&gadget_wrapper->
1037 static const struct dwc_otg_pcd_function_ops fops = {
1038 .complete = _complete,
1040 .isoc_complete = _isoc_complete,
1043 .disconnect = _disconnect,
1044 .connect = _connect,
1046 .suspend = _suspend,
1047 .hnp_changed = _hnp_changed,
1050 .cfi_setup = _cfi_setup,
1052 #ifdef DWC_UTE_PER_IO
1053 .xisoc_complete = _xisoc_complete,
1058 * This function is the top level PCD interrupt handler.
1060 static irqreturn_t dwc_otg_pcd_irq(int irq, void *dev)
1062 dwc_otg_pcd_t *pcd = dev;
1063 int32_t retval = IRQ_NONE;
1065 retval = dwc_otg_pcd_handle_intr(pcd);
1067 /* S3C2410X_CLEAR_EINTPEND();*/
1069 return IRQ_RETVAL(retval);
1073 * This function initialized the usb_ep structures to there default
1076 * @param d Pointer on gadget_wrapper.
1078 void gadget_add_eps(struct gadget_wrapper *d)
1080 static const char *names[] = {
1117 int8_t dev_endpoints;
1119 DWC_DEBUGPL(DBG_PCDV, "%s\n", __func__);
1121 INIT_LIST_HEAD(&d->gadget.ep_list);
1122 d->gadget.ep0 = &d->ep0;
1123 d->gadget.speed = USB_SPEED_UNKNOWN;
1124 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 3, 0)
1125 d->gadget.max_speed = USB_SPEED_HIGH;
1128 INIT_LIST_HEAD(&d->gadget.ep0->ep_list);
1131 * Initialize the EP0 structure.
1135 /* Init the usb_ep structure. */
1136 ep->name = names[0];
1137 ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
1140 * @todo NGS: What should the max packet size be set to
1141 * here? Before EP type is set?
1143 ep->maxpacket = MAX_PACKET_SIZE;
1144 dwc_otg_pcd_ep_enable(d->pcd, NULL, ep);
1146 list_add_tail(&ep->ep_list, &d->gadget.ep_list);
1149 * Initialize the EP structures.
1151 dev_endpoints = d->pcd->core_if->dev_if->num_in_eps;
1153 for (i = 0; i < dev_endpoints; i++) {
1156 /* Init the usb_ep structure. */
1157 ep->name = names[d->pcd->in_ep[i].dwc_ep.num];
1158 ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
1161 * @todo NGS: What should the max packet size be set to
1162 * here? Before EP type is set?
1164 ep->maxpacket = MAX_PACKET_SIZE;
1165 list_add_tail(&ep->ep_list, &d->gadget.ep_list);
1168 dev_endpoints = d->pcd->core_if->dev_if->num_out_eps;
1170 for (i = 0; i < dev_endpoints; i++) {
1173 /* Init the usb_ep structure. */
1174 ep->name = names[15 + d->pcd->out_ep[i].dwc_ep.num];
1175 ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
1178 * @todo NGS: What should the max packet size be set to
1179 * here? Before EP type is set?
1181 ep->maxpacket = MAX_PACKET_SIZE;
1183 list_add_tail(&ep->ep_list, &d->gadget.ep_list);
1186 /* remove ep0 from the list. There is a ep0 pointer. */
1187 list_del_init(&d->ep0.ep_list);
1189 d->ep0.maxpacket = MAX_EP0_SIZE;
1193 * This function releases the Gadget device.
1194 * required by device_unregister().
1196 * @todo Should this do something? Should it free the PCD?
1198 static void dwc_otg_pcd_gadget_release(struct device *dev)
1200 DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, dev);
1203 static struct gadget_wrapper *alloc_wrapper(struct platform_device *_dev)
1205 static char pcd_name[] = "dwc_otg_pcd";
1207 dwc_otg_device_t *otg_dev = dwc_get_device_platform_data(_dev);
1208 struct gadget_wrapper *d;
1211 d = DWC_ALLOC(sizeof(*d));
1216 memset(d, 0, sizeof(*d));
1218 d->gadget.name = pcd_name;
1219 d->pcd = otg_dev->pcd;
1221 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 30)
1222 strcpy(d->gadget.dev.bus_id, "gadget");
1224 dev_set_name(&d->gadget.dev, "%s", "gadget");
1227 d->gadget.dev.parent = &_dev->dev;
1228 d->gadget.dev.release = dwc_otg_pcd_gadget_release;
1229 d->gadget.ops = &dwc_otg_pcd_ops;
1230 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 0, 0)
1231 d->gadget.is_dualspeed = dwc_otg_pcd_is_dualspeed(otg_dev->pcd);
1233 d->gadget.is_otg = dwc_otg_pcd_is_otg(otg_dev->pcd);
1235 d->gadget.max_speed = USB_SPEED_HIGH;
1237 d->pcd->conn_en = 0;
1238 /* Register the gadget device */
1239 retval = usb_add_gadget_udc(&_dev->dev, &d->gadget);
1241 DWC_ERROR("device_register failed\n");
1249 static void free_wrapper(struct gadget_wrapper *d)
1252 /* should have been done already by driver model core */
1253 DWC_WARN("driver '%s' is still registered\n",
1254 d->driver->driver.name);
1255 usb_gadget_unregister_driver(d->driver);
1258 usb_del_gadget_udc(&d->gadget);
1262 static void dwc_otg_pcd_work_init(dwc_otg_pcd_t *pcd,
1263 struct platform_device *dev);
1266 * This function initialized the PCD portion of the driver.
1269 int pcd_init(struct platform_device *_dev)
1272 dwc_otg_device_t *otg_dev = dwc_get_device_platform_data(_dev);
1276 DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _dev);
1278 otg_dev->pcd = dwc_otg_pcd_init(otg_dev->core_if);
1279 printk("pcd_init otg_dev = %p\n", otg_dev);
1281 if (!otg_dev->pcd) {
1282 DWC_ERROR("dwc_otg_pcd_init failed\n");
1286 otg_dev->pcd->otg_dev = otg_dev;
1287 gadget_wrapper = alloc_wrapper(_dev);
1290 * Initialize EP structures
1292 gadget_add_eps(gadget_wrapper);
1294 * Setup interupt handler
1296 irq = platform_get_irq(_dev, 0);
1297 DWC_DEBUGPL(DBG_ANY, "registering handler for irq%d\n", irq);
1298 retval = request_irq(irq, dwc_otg_pcd_irq,
1300 gadget_wrapper->gadget.name, otg_dev->pcd);
1302 DWC_ERROR("request of irq%d failed\n", irq);
1303 free_wrapper(gadget_wrapper);
1307 dwc_otg_pcd_start(gadget_wrapper->pcd, &fops);
1309 dwc_otg_pcd_work_init(otg_dev->pcd, _dev);
1317 void pcd_remove(struct platform_device *_dev)
1320 dwc_otg_device_t *otg_dev = dwc_get_device_platform_data(_dev);
1321 dwc_otg_pcd_t *pcd = otg_dev->pcd;
1324 DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _dev);
1329 irq = platform_get_irq(_dev, 0);
1331 free_wrapper(gadget_wrapper);
1332 dwc_otg_pcd_remove(otg_dev->pcd);
1337 * This function registers a gadget driver with the PCD.
1339 * When a driver is successfully registered, it will receive control
1340 * requests including set_configuration(), which enables non-control
1341 * requests. then usb traffic follows until a disconnect is reported.
1342 * then a host may connect again, or the driver might get unbound.
1344 * @param driver The driver being registered
1345 * @param bind The bind function of gadget driver
1348 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 37)
1349 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
1351 int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
1352 int (*bind) (struct usb_gadget *))
1357 DWC_DEBUGPL(DBG_PCD, "registering gadget driver '%s'\n",
1358 driver->driver.name);
1361 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0)
1362 driver->speed == USB_SPEED_UNKNOWN ||
1364 driver->max_speed == USB_SPEED_UNKNOWN ||
1366 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 37)
1371 !driver->unbind || !driver->disconnect || !driver->setup) {
1372 DWC_DEBUGPL(DBG_PCDV, "EINVAL\n");
1375 if (gadget_wrapper == 0) {
1376 DWC_DEBUGPL(DBG_PCDV, "ENODEV\n");
1379 if (gadget_wrapper->driver != 0) {
1380 DWC_DEBUGPL(DBG_PCDV, "EBUSY (%p)\n", gadget_wrapper->driver);
1384 /* hook up the driver */
1385 gadget_wrapper->driver = driver;
1386 gadget_wrapper->gadget.dev.driver = &driver->driver;
1388 DWC_DEBUGPL(DBG_PCD, "bind to driver %s\n", driver->driver.name);
1389 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 37)
1390 retval = driver->bind(&gadget_wrapper->gadget);
1392 retval = bind(&gadget_wrapper->gadget);
1395 DWC_ERROR("bind to driver %s --> error %d\n",
1396 driver->driver.name, retval);
1397 gadget_wrapper->driver = 0;
1398 gadget_wrapper->gadget.dev.driver = 0;
1401 DWC_DEBUGPL(DBG_ANY, "registered gadget driver '%s'\n",
1402 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.
1489 DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
1490 dctl.b.sftdiscon = 0;
1491 DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl,
1494 ("*******************soft connect!!!*******************\n");
1498 static void dwc_otg_pcd_check_vbus_work(struct work_struct *work)
1500 dwc_otg_pcd_t *_pcd =
1501 container_of(work, dwc_otg_pcd_t, check_vbus_work.work);
1502 struct dwc_otg_device *otg_dev = _pcd->otg_dev;
1503 struct dwc_otg_platform_data *pldata = otg_dev->pldata;
1504 unsigned long flags;
1506 local_irq_save(flags);
1508 if (!pldata->get_status(USB_STATUS_ID)) {
1509 /* id low, host mode */
1510 if (pldata->dwc_otg_uart_mode != NULL) {
1511 /* exit phy bypass to uart & enable usb phy */
1512 pldata->dwc_otg_uart_mode(pldata, PHY_USB_MODE);
1514 if (pldata->phy_status) {
1515 pldata->clock_enable(pldata, 1);
1516 pldata->phy_suspend(pldata, USB_PHY_ENABLED);
1518 if (pldata->bc_detect_cb != NULL)
1519 pldata->bc_detect_cb(_pcd->vbus_status =
1520 USB_BC_TYPE_DISCNT);
1522 _pcd->vbus_status = USB_BC_TYPE_DISCNT;
1523 dwc_otg_enable_global_interrupts(otg_dev->core_if);
1525 } else if (pldata->get_status(USB_STATUS_BVABLID)) {
1526 /* if usb not connect before ,then start connect */
1527 if (_pcd->vbus_status == USB_BC_TYPE_DISCNT) {
1528 printk("*****************vbus detect*******************\n");
1529 /* if( pldata->bc_detect_cb != NULL ) */
1530 /* pldata->bc_detect_cb(_pcd->vbus_status */
1531 /* = usb_battery_charger_detect(1)); */
1533 _pcd->vbus_status = USB_BC_TYPE_SDP;
1534 if (_pcd->conn_en) {
1536 } else if (pldata->phy_status == USB_PHY_ENABLED) {
1537 /* do not allow to connect, suspend phy */
1538 pldata->phy_suspend(pldata, USB_PHY_SUSPEND);
1540 pldata->clock_enable(pldata, 0);
1542 } else if ((_pcd->conn_en) && (_pcd->conn_status >= 0)
1543 && (_pcd->conn_status < 2)) {
1544 printk("****************soft reconnect******************\n");
1546 } else if (_pcd->conn_status == 2) {
1547 /* release pcd->wake_lock if fail to connect,
1548 * allow system to enter second sleep.
1550 dwc_otg_msc_unlock(_pcd);
1551 _pcd->conn_status++;
1552 if (pldata->bc_detect_cb != NULL) {
1553 rk_usb_charger_status = USB_BC_TYPE_DCP;
1554 pldata->bc_detect_cb(_pcd->vbus_status =
1557 _pcd->vbus_status = USB_BC_TYPE_DCP;
1558 rk_usb_charger_status = USB_BC_TYPE_DCP;
1560 /* fail to connect, suspend usb phy and disable clk */
1561 if (pldata->phy_status == USB_PHY_ENABLED) {
1562 pldata->phy_suspend(pldata, USB_PHY_SUSPEND);
1564 pldata->clock_enable(pldata, 0);
1568 if (pldata->bc_detect_cb != NULL)
1569 pldata->bc_detect_cb(_pcd->vbus_status =
1570 USB_BC_TYPE_DISCNT);
1572 _pcd->vbus_status = USB_BC_TYPE_DISCNT;
1574 if (_pcd->conn_status) {
1575 _pcd->conn_status = 0;
1578 if (pldata->phy_status == USB_PHY_ENABLED) {
1579 /* release wake lock */
1580 dwc_otg_msc_unlock(_pcd);
1581 /* no vbus detect here , close usb phy */
1582 pldata->phy_suspend(pldata, USB_PHY_SUSPEND);
1584 pldata->clock_enable(pldata, 0);
1587 /* usb phy bypass to uart mode */
1588 if (pldata->dwc_otg_uart_mode != NULL)
1589 pldata->dwc_otg_uart_mode(pldata, PHY_UART_MODE);
1592 schedule_delayed_work(&_pcd->check_vbus_work, HZ);
1593 local_irq_restore(flags);
1598 if (pldata->phy_status) {
1599 pldata->clock_enable(pldata, 1);
1600 pldata->phy_suspend(pldata, USB_PHY_ENABLED);
1603 if (_pcd->conn_status == 0)
1604 dwc_otg_msc_lock(_pcd);
1606 schedule_delayed_work(&_pcd->reconnect, 8); /* delay 8 jiffies */
1607 schedule_delayed_work(&_pcd->check_vbus_work, (HZ << 2));
1608 local_irq_restore(flags);
1613 void dwc_otg_pcd_start_check_vbus_work(dwc_otg_pcd_t *pcd)
1616 * when receive reset int,the vbus state may not be update,so
1617 * always start vbus work here.
1619 schedule_delayed_work(&pcd->check_vbus_work, (HZ * 2));
1623 * 20091228,HSL@RK,to get the current vbus status.
1625 int dwc_vbus_status(void)
1627 #ifdef CONFIG_USB20_OTG
1628 dwc_otg_pcd_t *pcd = 0;
1629 if (gadget_wrapper) {
1630 pcd = gadget_wrapper->pcd;
1636 return pcd->vbus_status;
1642 EXPORT_SYMBOL(dwc_vbus_status);
1644 static void dwc_otg_pcd_work_init(dwc_otg_pcd_t *pcd,
1645 struct platform_device *dev)
1648 struct dwc_otg_device *otg_dev = pcd->otg_dev;
1649 pcd->vbus_status = USB_BC_TYPE_DISCNT;
1650 pcd->phy_suspend = USB_PHY_ENABLED;
1651 #ifdef CONFIG_RK_USB_UART
1652 struct dwc_otg_platform_data *pldata = otg_dev->pldata;
1655 INIT_DELAYED_WORK(&pcd->reconnect, dwc_phy_reconnect);
1656 INIT_DELAYED_WORK(&pcd->check_vbus_work, dwc_otg_pcd_check_vbus_work);
1658 wake_lock_init(&pcd->wake_lock, WAKE_LOCK_SUSPEND, "usb_pcd");
1660 if (dwc_otg_is_device_mode(pcd->core_if) &&
1661 (otg_dev->core_if->usb_mode != USB_MODE_FORCE_HOST)) {
1662 #ifdef CONFIG_RK_USB_UART
1663 if (pldata->get_status(USB_STATUS_BVABLID)) {
1664 /* enter usb phy mode */
1665 pldata->dwc_otg_uart_mode(pldata, PHY_USB_MODE);
1667 /* usb phy bypass to uart mode */
1668 pldata->dwc_otg_uart_mode(pldata, PHY_UART_MODE);
1671 schedule_delayed_work(&pcd->check_vbus_work, (HZ << 4));
1673 #ifdef CONFIG_RK_USB_UART
1674 else if (pldata->dwc_otg_uart_mode != NULL)
1675 /* host mode,enter usb phy mode */
1676 pldata->dwc_otg_uart_mode(pldata, PHY_USB_MODE);
1681 #endif /* DWC_HOST_ONLY */