Lines Matching +full:double +full:- +full:buffering
1 // SPDX-License-Identifier: GPL-2.0
6 * Copyright (C) 2005-2006 by Texas Instruments
7 * Copyright (C) 2006-2007 Nokia Corporation
19 #include <linux/dma-mapping.h>
26 /* ----------------------------------------------------------------------- */
29 (req->map_state != UN_MAPPED))
37 struct dma_controller *dma = musb->dma_controller; in map_dma_buffer()
39 request->map_state = UN_MAPPED; in map_dma_buffer()
41 if (!is_dma_capable() || !musb_ep->dma) in map_dma_buffer()
48 if (dma->is_compatible) in map_dma_buffer()
49 compatible = dma->is_compatible(musb_ep->dma, in map_dma_buffer()
50 musb_ep->packet_sz, request->request.buf, in map_dma_buffer()
51 request->request.length); in map_dma_buffer()
55 if (request->request.dma == DMA_ADDR_INVALID) { in map_dma_buffer()
60 musb->controller, in map_dma_buffer()
61 request->request.buf, in map_dma_buffer()
62 request->request.length, in map_dma_buffer()
63 request->tx in map_dma_buffer()
66 ret = dma_mapping_error(musb->controller, dma_addr); in map_dma_buffer()
70 request->request.dma = dma_addr; in map_dma_buffer()
71 request->map_state = MUSB_MAPPED; in map_dma_buffer()
73 dma_sync_single_for_device(musb->controller, in map_dma_buffer()
74 request->request.dma, in map_dma_buffer()
75 request->request.length, in map_dma_buffer()
76 request->tx in map_dma_buffer()
79 request->map_state = PRE_MAPPED; in map_dma_buffer()
87 struct musb_ep *musb_ep = request->ep; in unmap_dma_buffer()
89 if (!is_buffer_mapped(request) || !musb_ep->dma) in unmap_dma_buffer()
92 if (request->request.dma == DMA_ADDR_INVALID) { in unmap_dma_buffer()
93 dev_vdbg(musb->controller, in unmap_dma_buffer()
97 if (request->map_state == MUSB_MAPPED) { in unmap_dma_buffer()
98 dma_unmap_single(musb->controller, in unmap_dma_buffer()
99 request->request.dma, in unmap_dma_buffer()
100 request->request.length, in unmap_dma_buffer()
101 request->tx in unmap_dma_buffer()
104 request->request.dma = DMA_ADDR_INVALID; in unmap_dma_buffer()
106 dma_sync_single_for_cpu(musb->controller, in unmap_dma_buffer()
107 request->request.dma, in unmap_dma_buffer()
108 request->request.length, in unmap_dma_buffer()
109 request->tx in unmap_dma_buffer()
113 request->map_state = UN_MAPPED; in unmap_dma_buffer()
127 __releases(ep->musb->lock) in musb_g_giveback()
128 __acquires(ep->musb->lock) in musb_g_giveback()
132 int busy = ep->busy; in musb_g_giveback()
136 list_del(&req->list); in musb_g_giveback()
137 if (req->request.status == -EINPROGRESS) in musb_g_giveback()
138 req->request.status = status; in musb_g_giveback()
139 musb = req->musb; in musb_g_giveback()
141 ep->busy = 1; in musb_g_giveback()
142 spin_unlock(&musb->lock); in musb_g_giveback()
144 if (!dma_mapping_error(&musb->g.dev, request->dma)) in musb_g_giveback()
148 usb_gadget_giveback_request(&req->ep->end_point, &req->request); in musb_g_giveback()
149 spin_lock(&musb->lock); in musb_g_giveback()
150 ep->busy = busy; in musb_g_giveback()
153 /* ----------------------------------------------------------------------- */
161 struct musb *musb = ep->musb; in nuke()
163 void __iomem *epio = ep->musb->endpoints[ep->current_epnum].regs; in nuke()
165 ep->busy = 1; in nuke()
167 if (is_dma_capable() && ep->dma) { in nuke()
168 struct dma_controller *c = ep->musb->dma_controller; in nuke()
171 if (ep->is_in) { in nuke()
188 value = c->channel_abort(ep->dma); in nuke()
189 musb_dbg(musb, "%s: abort DMA --> %d", ep->name, value); in nuke()
190 c->channel_release(ep->dma); in nuke()
191 ep->dma = NULL; in nuke()
194 while (!list_empty(&ep->req_list)) { in nuke()
195 req = list_first_entry(&ep->req_list, struct musb_request, list); in nuke()
196 musb_g_giveback(ep, &req->request, status); in nuke()
200 /* ----------------------------------------------------------------------- */
202 /* Data transfers - pure PIO, pure DMA, or mixed mode */
211 if (can_bulk_split(musb, ep->type)) in max_ep_writesize()
212 return ep->hw_ep->max_packet_sz_tx; in max_ep_writesize()
214 return ep->packet_sz; in max_ep_writesize()
226 u8 epnum = req->epnum; in txstate()
228 void __iomem *epio = musb->endpoints[epnum].regs; in txstate()
233 musb_ep = req->ep; in txstate()
236 if (!musb_ep->desc) { in txstate()
237 musb_dbg(musb, "ep:%s disabled - ignore request", in txstate()
238 musb_ep->end_point.name); in txstate()
243 if (dma_channel_status(musb_ep->dma) == MUSB_DMA_STATUS_BUSY) { in txstate()
251 request = &req->request; in txstate()
253 (int)(request->length - request->actual)); in txstate()
257 musb_ep->end_point.name, csr); in txstate()
263 musb_ep->end_point.name, csr); in txstate()
268 epnum, musb_ep->packet_sz, fifo_count, in txstate()
273 struct dma_controller *c = musb->dma_controller; in txstate()
277 request_size = min_t(size_t, request->length - request->actual, in txstate()
278 musb_ep->dma->max_len); in txstate()
280 use_dma = (request->dma != DMA_ADDR_INVALID && request_size); in txstate()
285 if (request_size < musb_ep->packet_sz) in txstate()
286 musb_ep->dma->desired_mode = 0; in txstate()
288 musb_ep->dma->desired_mode = 1; in txstate()
290 use_dma = use_dma && c->channel_program( in txstate()
291 musb_ep->dma, musb_ep->packet_sz, in txstate()
292 musb_ep->dma->desired_mode, in txstate()
293 request->dma + request->actual, request_size); in txstate()
295 if (musb_ep->dma->desired_mode == 0) { in txstate()
298 * before the DMAENAB bit -- and the in txstate()
323 if (!musb_ep->hb_mult || in txstate()
325 musb_ep->type)) in txstate()
356 * last-packet-is-already-short case. in txstate()
358 use_dma = use_dma && c->channel_program( in txstate()
359 musb_ep->dma, musb_ep->packet_sz, in txstate()
361 request->dma + request->actual, in txstate()
364 c->channel_release(musb_ep->dma); in txstate()
365 musb_ep->dma = NULL; in txstate()
368 /* invariant: prequest->buf is non-null */ in txstate()
371 use_dma = use_dma && c->channel_program( in txstate()
372 musb_ep->dma, musb_ep->packet_sz, in txstate()
373 request->zero, in txstate()
374 request->dma + request->actual, in txstate()
386 musb_write_fifo(musb_ep->hw_ep, fifo_count, in txstate()
387 (u8 *) (request->buf + request->actual)); in txstate()
388 request->actual += fifo_count; in txstate()
396 musb_ep->end_point.name, use_dma ? "dma" : "pio", in txstate()
397 request->actual, request->length, in txstate()
412 u8 __iomem *mbase = musb->mregs; in musb_g_tx()
413 struct musb_ep *musb_ep = &musb->endpoints[epnum].ep_in; in musb_g_tx()
414 void __iomem *epio = musb->endpoints[epnum].regs; in musb_g_tx()
419 request = &req->request; in musb_g_tx()
422 musb_dbg(musb, "<== %s, txcsr %04x", musb_ep->end_point.name, csr); in musb_g_tx()
424 dma = is_dma_capable() ? musb_ep->dma : NULL; in musb_g_tx()
442 dev_vdbg(musb->controller, "underrun on ep%d, req %p\n", in musb_g_tx()
451 musb_dbg(musb, "%s dma still busy?", musb_ep->end_point.name); in musb_g_tx()
466 request->actual += musb_ep->dma->actual_len; in musb_g_tx()
468 epnum, csr, musb_ep->dma->actual_len, request); in musb_g_tx()
475 if ((request->zero && request->length) in musb_g_tx()
476 && (request->length % musb_ep->packet_sz == 0) in musb_g_tx()
477 && (request->actual == request->length)) { in musb_g_tx()
488 request->zero = 0; in musb_g_tx()
491 if (request->actual == request->length) { in musb_g_tx()
502 req = musb_ep->desc ? next_request(musb_ep) : NULL; in musb_g_tx()
505 musb_ep->end_point.name); in musb_g_tx()
514 /* ------------------------------------------------------------ */
521 const u8 epnum = req->epnum; in rxstate()
522 struct usb_request *request = &req->request; in rxstate()
524 void __iomem *epio = musb->endpoints[epnum].regs; in rxstate()
528 struct musb_hw_ep *hw_ep = &musb->endpoints[epnum]; in rxstate()
531 if (hw_ep->is_shared_fifo) in rxstate()
532 musb_ep = &hw_ep->ep_in; in rxstate()
534 musb_ep = &hw_ep->ep_out; in rxstate()
536 fifo_count = musb_ep->packet_sz; in rxstate()
539 if (!musb_ep->desc) { in rxstate()
540 musb_dbg(musb, "ep:%s disabled - ignore request", in rxstate()
541 musb_ep->end_point.name); in rxstate()
546 if (dma_channel_status(musb_ep->dma) == MUSB_DMA_STATUS_BUSY) { in rxstate()
553 musb_ep->end_point.name, csr); in rxstate()
558 struct dma_controller *c = musb->dma_controller; in rxstate()
559 struct dma_channel *channel = musb_ep->dma; in rxstate()
563 * always going to run as IRQ-per-packet DMA so that in rxstate()
566 if (c->channel_program(channel, in rxstate()
567 musb_ep->packet_sz, in rxstate()
568 !request->short_not_ok, in rxstate()
569 request->dma + request->actual, in rxstate()
570 request->length - request->actual)) { in rxstate()
593 if (request->short_not_ok && fifo_count == musb_ep->packet_sz) in rxstate()
598 if (request->actual < request->length) { in rxstate()
608 c = musb->dma_controller; in rxstate()
609 channel = musb_ep->dma; in rxstate()
616 * in advance. For mass storage class, request->length = what the host in rxstate()
618 * request->length is routinely more than what the host sends. For in rxstate()
628 * REVISIT an updated g_file_storage can set req->short_not_ok, which in rxstate()
649 request->length - in rxstate()
650 request->actual, in rxstate()
651 channel->max_len); in rxstate()
652 musb_ep->dma->desired_mode = 1; in rxstate()
654 if (!musb_ep->hb_mult && in rxstate()
655 musb_ep->hw_ep->rx_double_buffered) in rxstate()
660 transfer_size = min(request->length - request->actual, in rxstate()
662 musb_ep->dma->desired_mode = 0; in rxstate()
665 use_dma = c->channel_program( in rxstate()
667 musb_ep->packet_sz, in rxstate()
668 channel->desired_mode, in rxstate()
669 request->dma in rxstate()
670 + request->actual, in rxstate()
678 (request->actual < request->length)) { in rxstate()
684 c = musb->dma_controller; in rxstate()
685 channel = musb_ep->dma; in rxstate()
688 if (fifo_count < musb_ep->packet_sz) in rxstate()
690 else if (request->short_not_ok) in rxstate()
692 request->length - in rxstate()
693 request->actual, in rxstate()
694 channel->max_len); in rxstate()
697 request->length - in rxstate()
698 request->actual, in rxstate()
707 if (transfer_size <= musb_ep->packet_sz) { in rxstate()
708 musb_ep->dma->desired_mode = 0; in rxstate()
710 musb_ep->dma->desired_mode = 1; in rxstate()
716 if (c->channel_program(channel, in rxstate()
717 musb_ep->packet_sz, in rxstate()
718 channel->desired_mode, in rxstate()
719 request->dma in rxstate()
720 + request->actual, in rxstate()
726 len = request->length - request->actual; in rxstate()
728 musb_ep->end_point.name, in rxstate()
730 musb_ep->packet_sz); in rxstate()
735 struct dma_controller *c = musb->dma_controller; in rxstate()
736 struct dma_channel *channel = musb_ep->dma; in rxstate()
737 u32 dma_addr = request->dma + request->actual; in rxstate()
740 ret = c->channel_program(channel, in rxstate()
741 musb_ep->packet_sz, in rxstate()
742 channel->desired_mode, in rxstate()
765 request->length - request->actual, in rxstate()
767 musb_read_fifo(musb_ep->hw_ep, fifo_count, (u8 *) in rxstate()
768 (request->buf + request->actual)); in rxstate()
769 request->actual += fifo_count; in rxstate()
772 * it and report -EOVERFLOW in rxstate()
783 if (request->actual == request->length || in rxstate()
784 fifo_count < musb_ep->packet_sz) in rxstate()
796 void __iomem *mbase = musb->mregs; in musb_g_rx()
798 void __iomem *epio = musb->endpoints[epnum].regs; in musb_g_rx()
800 struct musb_hw_ep *hw_ep = &musb->endpoints[epnum]; in musb_g_rx()
802 if (hw_ep->is_shared_fifo) in musb_g_rx()
803 musb_ep = &hw_ep->ep_in; in musb_g_rx()
805 musb_ep = &hw_ep->ep_out; in musb_g_rx()
814 request = &req->request; in musb_g_rx()
817 dma = is_dma_capable() ? musb_ep->dma : NULL; in musb_g_rx()
819 musb_dbg(musb, "<== %s, rxcsr %04x%s %p", musb_ep->end_point.name, in musb_g_rx()
834 musb_dbg(musb, "%s iso overrun on %p", musb_ep->name, request); in musb_g_rx()
835 if (request->status == -EINPROGRESS) in musb_g_rx()
836 request->status = -EOVERFLOW; in musb_g_rx()
840 musb_dbg(musb, "%s, incomprx", musb_ep->end_point.name); in musb_g_rx()
846 musb_ep->end_point.name, csr); in musb_g_rx()
857 request->actual += musb_ep->dma->actual_len; in musb_g_rx()
862 if ((dma->desired_mode == 0 && !hw_ep->rx_double_buffered) in musb_g_rx()
863 || (dma->actual_len in musb_g_rx()
864 & (musb_ep->packet_sz - 1))) { in musb_g_rx()
871 if ((request->actual < request->length) in musb_g_rx()
872 && (musb_ep->dma->actual_len in musb_g_rx()
873 == musb_ep->packet_sz)) { in musb_g_rx()
874 /* In double buffer case, continue to unload fifo if in musb_g_rx()
879 hw_ep->rx_double_buffered) in musb_g_rx()
907 /* ------------------------------------------------------------ */
921 int status = -EINVAL; in musb_gadget_enable()
924 return -EINVAL; in musb_gadget_enable()
927 hw_ep = musb_ep->hw_ep; in musb_gadget_enable()
928 regs = hw_ep->regs; in musb_gadget_enable()
929 musb = musb_ep->musb; in musb_gadget_enable()
930 mbase = musb->mregs; in musb_gadget_enable()
931 epnum = musb_ep->current_epnum; in musb_gadget_enable()
933 spin_lock_irqsave(&musb->lock, flags); in musb_gadget_enable()
935 if (musb_ep->desc) { in musb_gadget_enable()
936 status = -EBUSY; in musb_gadget_enable()
939 musb_ep->type = usb_endpoint_type(desc); in musb_gadget_enable()
946 tmp = usb_endpoint_maxp_mult(desc) - 1; in musb_gadget_enable()
951 ok = musb->hb_iso_tx; in musb_gadget_enable()
953 ok = musb->hb_iso_rx; in musb_gadget_enable()
959 musb_ep->hb_mult = tmp; in musb_gadget_enable()
961 musb_ep->hb_mult = 0; in musb_gadget_enable()
964 musb_ep->packet_sz = usb_endpoint_maxp(desc); in musb_gadget_enable()
965 tmp = musb_ep->packet_sz * (musb_ep->hb_mult + 1); in musb_gadget_enable()
973 if (hw_ep->is_shared_fifo) in musb_gadget_enable()
974 musb_ep->is_in = 1; in musb_gadget_enable()
975 if (!musb_ep->is_in) in musb_gadget_enable()
978 if (tmp > hw_ep->max_packet_sz_tx) { in musb_gadget_enable()
983 musb->intrtxe |= (1 << epnum); in musb_gadget_enable()
984 musb_writew(mbase, MUSB_INTRTXE, musb->intrtxe); in musb_gadget_enable()
990 * to disable double buffering mode. in musb_gadget_enable()
992 if (can_bulk_split(musb, musb_ep->type)) in musb_gadget_enable()
993 musb_ep->hb_mult = (hw_ep->max_packet_sz_tx / in musb_gadget_enable()
994 musb_ep->packet_sz) - 1; in musb_gadget_enable()
995 musb_writew(regs, MUSB_TXMAXP, musb_ep->packet_sz in musb_gadget_enable()
996 | (musb_ep->hb_mult << 11)); in musb_gadget_enable()
1002 if (musb_ep->type == USB_ENDPOINT_XFER_ISOC) in musb_gadget_enable()
1005 /* set twice in case of double buffering */ in musb_gadget_enable()
1012 if (hw_ep->is_shared_fifo) in musb_gadget_enable()
1013 musb_ep->is_in = 0; in musb_gadget_enable()
1014 if (musb_ep->is_in) in musb_gadget_enable()
1017 if (tmp > hw_ep->max_packet_sz_rx) { in musb_gadget_enable()
1022 musb->intrrxe |= (1 << epnum); in musb_gadget_enable()
1023 musb_writew(mbase, MUSB_INTRRXE, musb->intrrxe); in musb_gadget_enable()
1029 * to disable double buffering mode. in musb_gadget_enable()
1031 musb_writew(regs, MUSB_RXMAXP, musb_ep->packet_sz in musb_gadget_enable()
1032 | (musb_ep->hb_mult << 11)); in musb_gadget_enable()
1034 /* force shared fifo to OUT-only mode */ in musb_gadget_enable()
1035 if (hw_ep->is_shared_fifo) { in musb_gadget_enable()
1042 if (musb_ep->type == USB_ENDPOINT_XFER_ISOC) in musb_gadget_enable()
1044 else if (musb_ep->type == USB_ENDPOINT_XFER_INT) in musb_gadget_enable()
1047 /* set twice in case of double buffering */ in musb_gadget_enable()
1055 if (is_dma_capable() && musb->dma_controller) { in musb_gadget_enable()
1056 struct dma_controller *c = musb->dma_controller; in musb_gadget_enable()
1058 musb_ep->dma = c->channel_alloc(c, hw_ep, in musb_gadget_enable()
1059 (desc->bEndpointAddress & USB_DIR_IN)); in musb_gadget_enable()
1061 musb_ep->dma = NULL; in musb_gadget_enable()
1063 musb_ep->desc = desc; in musb_gadget_enable()
1064 musb_ep->busy = 0; in musb_gadget_enable()
1065 musb_ep->wedged = 0; in musb_gadget_enable()
1069 musb_driver_name, musb_ep->end_point.name, in musb_gadget_enable()
1070 musb_ep_xfertype_string(musb_ep->type), in musb_gadget_enable()
1071 musb_ep->is_in ? "IN" : "OUT", in musb_gadget_enable()
1072 musb_ep->dma ? "dma, " : "", in musb_gadget_enable()
1073 musb_ep->packet_sz); in musb_gadget_enable()
1075 schedule_delayed_work(&musb->irq_work, 0); in musb_gadget_enable()
1078 spin_unlock_irqrestore(&musb->lock, flags); in musb_gadget_enable()
1094 musb = musb_ep->musb; in musb_gadget_disable()
1095 epnum = musb_ep->current_epnum; in musb_gadget_disable()
1096 epio = musb->endpoints[epnum].regs; in musb_gadget_disable()
1098 spin_lock_irqsave(&musb->lock, flags); in musb_gadget_disable()
1099 musb_ep_select(musb->mregs, epnum); in musb_gadget_disable()
1102 if (musb_ep->is_in) { in musb_gadget_disable()
1103 musb->intrtxe &= ~(1 << epnum); in musb_gadget_disable()
1104 musb_writew(musb->mregs, MUSB_INTRTXE, musb->intrtxe); in musb_gadget_disable()
1107 musb->intrrxe &= ~(1 << epnum); in musb_gadget_disable()
1108 musb_writew(musb->mregs, MUSB_INTRRXE, musb->intrrxe); in musb_gadget_disable()
1113 nuke(musb_ep, -ESHUTDOWN); in musb_gadget_disable()
1115 musb_ep->desc = NULL; in musb_gadget_disable()
1116 musb_ep->end_point.desc = NULL; in musb_gadget_disable()
1118 schedule_delayed_work(&musb->irq_work, 0); in musb_gadget_disable()
1120 spin_unlock_irqrestore(&(musb->lock), flags); in musb_gadget_disable()
1122 musb_dbg(musb, "%s", musb_ep->end_point.name); in musb_gadget_disable()
1140 request->request.dma = DMA_ADDR_INVALID; in musb_alloc_request()
1141 request->epnum = musb_ep->current_epnum; in musb_alloc_request()
1142 request->ep = musb_ep; in musb_alloc_request()
1145 return &request->request; in musb_alloc_request()
1166 void __iomem *epio = req->ep->hw_ep->regs; in musb_ep_restart()
1169 musb_ep_select(musb->mregs, req->epnum); in musb_ep_restart()
1170 if (req->tx) { in musb_ep_restart()
1199 return -EINVAL; in musb_gadget_queue()
1200 if (!req->buf) in musb_gadget_queue()
1201 return -ENODATA; in musb_gadget_queue()
1204 musb = musb_ep->musb; in musb_gadget_queue()
1207 request->musb = musb; in musb_gadget_queue()
1209 if (request->ep != musb_ep) in musb_gadget_queue()
1210 return -EINVAL; in musb_gadget_queue()
1212 status = pm_runtime_get(musb->controller); in musb_gadget_queue()
1213 if ((status != -EINPROGRESS) && status < 0) { in musb_gadget_queue()
1214 dev_err(musb->controller, in musb_gadget_queue()
1217 pm_runtime_put_noidle(musb->controller); in musb_gadget_queue()
1226 request->request.actual = 0; in musb_gadget_queue()
1227 request->request.status = -EINPROGRESS; in musb_gadget_queue()
1228 request->epnum = musb_ep->current_epnum; in musb_gadget_queue()
1229 request->tx = musb_ep->is_in; in musb_gadget_queue()
1233 spin_lock_irqsave(&musb->lock, lockflags); in musb_gadget_queue()
1236 if (!musb_ep->desc) { in musb_gadget_queue()
1238 req, ep->name, "disabled"); in musb_gadget_queue()
1239 status = -ESHUTDOWN; in musb_gadget_queue()
1245 list_add_tail(&request->list, &musb_ep->req_list); in musb_gadget_queue()
1248 if (!musb_ep->busy && &request->list == musb_ep->req_list.next) { in musb_gadget_queue()
1253 dev_err(musb->controller, "%s resume work: %i\n", in musb_gadget_queue()
1255 list_del(&request->list); in musb_gadget_queue()
1260 spin_unlock_irqrestore(&musb->lock, lockflags); in musb_gadget_queue()
1261 pm_runtime_mark_last_busy(musb->controller); in musb_gadget_queue()
1262 pm_runtime_put_autosuspend(musb->controller); in musb_gadget_queue()
1274 struct musb *musb = musb_ep->musb; in musb_gadget_dequeue()
1276 if (!ep || !request || req->ep != musb_ep) in musb_gadget_dequeue()
1277 return -EINVAL; in musb_gadget_dequeue()
1281 spin_lock_irqsave(&musb->lock, flags); in musb_gadget_dequeue()
1283 list_for_each_entry(r, &musb_ep->req_list, list) { in musb_gadget_dequeue()
1288 dev_err(musb->controller, "request %p not queued to %s\n", in musb_gadget_dequeue()
1289 request, ep->name); in musb_gadget_dequeue()
1290 status = -EINVAL; in musb_gadget_dequeue()
1295 if (musb_ep->req_list.next != &req->list || musb_ep->busy) in musb_gadget_dequeue()
1296 musb_g_giveback(musb_ep, request, -ECONNRESET); in musb_gadget_dequeue()
1299 else if (is_dma_capable() && musb_ep->dma) { in musb_gadget_dequeue()
1300 struct dma_controller *c = musb->dma_controller; in musb_gadget_dequeue()
1302 musb_ep_select(musb->mregs, musb_ep->current_epnum); in musb_gadget_dequeue()
1303 if (c->channel_abort) in musb_gadget_dequeue()
1304 status = c->channel_abort(musb_ep->dma); in musb_gadget_dequeue()
1306 status = -EBUSY; in musb_gadget_dequeue()
1308 musb_g_giveback(musb_ep, request, -ECONNRESET); in musb_gadget_dequeue()
1311 * we leave counting of in-flight packets imprecise. in musb_gadget_dequeue()
1313 musb_g_giveback(musb_ep, request, -ECONNRESET); in musb_gadget_dequeue()
1317 spin_unlock_irqrestore(&musb->lock, flags); in musb_gadget_dequeue()
1330 u8 epnum = musb_ep->current_epnum; in musb_gadget_set_halt()
1331 struct musb *musb = musb_ep->musb; in musb_gadget_set_halt()
1332 void __iomem *epio = musb->endpoints[epnum].regs; in musb_gadget_set_halt()
1340 return -EINVAL; in musb_gadget_set_halt()
1341 mbase = musb->mregs; in musb_gadget_set_halt()
1343 spin_lock_irqsave(&musb->lock, flags); in musb_gadget_set_halt()
1345 if ((USB_ENDPOINT_XFER_ISOC == musb_ep->type)) { in musb_gadget_set_halt()
1346 status = -EINVAL; in musb_gadget_set_halt()
1356 ep->name); in musb_gadget_set_halt()
1357 status = -EAGAIN; in musb_gadget_set_halt()
1360 /* Cannot portably stall with non-empty FIFO */ in musb_gadget_set_halt()
1361 if (musb_ep->is_in) { in musb_gadget_set_halt()
1365 ep->name); in musb_gadget_set_halt()
1366 status = -EAGAIN; in musb_gadget_set_halt()
1371 musb_ep->wedged = 0; in musb_gadget_set_halt()
1374 musb_dbg(musb, "%s: %s stall", ep->name, value ? "set" : "clear"); in musb_gadget_set_halt()
1375 if (musb_ep->is_in) { in musb_gadget_set_halt()
1400 if (!musb_ep->busy && !value && request) { in musb_gadget_set_halt()
1406 spin_unlock_irqrestore(&musb->lock, flags); in musb_gadget_set_halt()
1418 return -EINVAL; in musb_gadget_set_wedge()
1420 musb_ep->wedged = 1; in musb_gadget_set_wedge()
1428 void __iomem *epio = musb_ep->hw_ep->regs; in musb_gadget_fifo_status()
1429 int retval = -EINVAL; in musb_gadget_fifo_status()
1431 if (musb_ep->desc && !musb_ep->is_in) { in musb_gadget_fifo_status()
1432 struct musb *musb = musb_ep->musb; in musb_gadget_fifo_status()
1433 int epnum = musb_ep->current_epnum; in musb_gadget_fifo_status()
1434 void __iomem *mbase = musb->mregs; in musb_gadget_fifo_status()
1437 spin_lock_irqsave(&musb->lock, flags); in musb_gadget_fifo_status()
1443 spin_unlock_irqrestore(&musb->lock, flags); in musb_gadget_fifo_status()
1451 struct musb *musb = musb_ep->musb; in musb_gadget_fifo_flush()
1452 u8 epnum = musb_ep->current_epnum; in musb_gadget_fifo_flush()
1453 void __iomem *epio = musb->endpoints[epnum].regs; in musb_gadget_fifo_flush()
1458 mbase = musb->mregs; in musb_gadget_fifo_flush()
1460 spin_lock_irqsave(&musb->lock, flags); in musb_gadget_fifo_flush()
1464 musb_writew(mbase, MUSB_INTRTXE, musb->intrtxe & ~(1 << epnum)); in musb_gadget_fifo_flush()
1466 if (musb_ep->is_in) { in musb_gadget_fifo_flush()
1487 /* re-enable interrupt */ in musb_gadget_fifo_flush()
1488 musb_writew(mbase, MUSB_INTRTXE, musb->intrtxe); in musb_gadget_fifo_flush()
1489 spin_unlock_irqrestore(&musb->lock, flags); in musb_gadget_fifo_flush()
1505 /* ----------------------------------------------------------------------- */
1511 return (int)musb_readw(musb->mregs, MUSB_FRAME); in musb_gadget_get_frame()
1517 void __iomem *mregs = musb->mregs; in musb_gadget_wakeup()
1519 int status = -EINVAL; in musb_gadget_wakeup()
1523 spin_lock_irqsave(&musb->lock, flags); in musb_gadget_wakeup()
1531 if (musb->may_wakeup && musb->is_suspended) in musb_gadget_wakeup()
1544 if (retries-- < 1) in musb_gadget_wakeup()
1550 if (retries-- < 1) in musb_gadget_wakeup()
1554 if (musb->xceiv) { in musb_gadget_wakeup()
1555 spin_unlock_irqrestore(&musb->lock, flags); in musb_gadget_wakeup()
1556 otg_start_srp(musb->xceiv->otg); in musb_gadget_wakeup()
1557 spin_lock_irqsave(&musb->lock, flags); in musb_gadget_wakeup()
1586 spin_unlock_irqrestore(&musb->lock, flags); in musb_gadget_wakeup()
1593 gadget->is_selfpowered = !!is_selfpowered; in musb_gadget_set_self_powered()
1601 power = musb_readb(musb->mregs, MUSB_POWER); in musb_pullup()
1611 musb_writeb(musb->mregs, MUSB_POWER, power); in musb_pullup()
1624 return -EINVAL;
1632 return usb_phy_set_power(musb->xceiv, mA); in musb_gadget_vbus_draw()
1641 pm_runtime_get_sync(musb->controller); in musb_gadget_work()
1642 spin_lock_irqsave(&musb->lock, flags); in musb_gadget_work()
1643 musb_pullup(musb, musb->softconnect); in musb_gadget_work()
1644 spin_unlock_irqrestore(&musb->lock, flags); in musb_gadget_work()
1645 pm_runtime_mark_last_busy(musb->controller); in musb_gadget_work()
1646 pm_runtime_put_autosuspend(musb->controller); in musb_gadget_work()
1657 * not pullup unless the B-session is active. in musb_gadget_pullup()
1659 spin_lock_irqsave(&musb->lock, flags); in musb_gadget_pullup()
1660 if (is_on != musb->softconnect) { in musb_gadget_pullup()
1661 musb->softconnect = is_on; in musb_gadget_pullup()
1662 schedule_delayed_work(&musb->gadget_work, 0); in musb_gadget_pullup()
1664 spin_unlock_irqrestore(&musb->lock, flags); in musb_gadget_pullup()
1684 /* ----------------------------------------------------------------------- */
1696 struct musb_hw_ep *hw_ep = musb->endpoints + epnum; in init_peripheral_ep()
1700 ep->current_epnum = epnum; in init_peripheral_ep()
1701 ep->musb = musb; in init_peripheral_ep()
1702 ep->hw_ep = hw_ep; in init_peripheral_ep()
1703 ep->is_in = is_in; in init_peripheral_ep()
1705 INIT_LIST_HEAD(&ep->req_list); in init_peripheral_ep()
1707 sprintf(ep->name, "ep%d%s", epnum, in init_peripheral_ep()
1708 (!epnum || hw_ep->is_shared_fifo) ? "" : ( in init_peripheral_ep()
1710 ep->end_point.name = ep->name; in init_peripheral_ep()
1711 INIT_LIST_HEAD(&ep->end_point.ep_list); in init_peripheral_ep()
1713 usb_ep_set_maxpacket_limit(&ep->end_point, 64); in init_peripheral_ep()
1714 ep->end_point.caps.type_control = true; in init_peripheral_ep()
1715 ep->end_point.ops = &musb_g_ep0_ops; in init_peripheral_ep()
1716 musb->g.ep0 = &ep->end_point; in init_peripheral_ep()
1719 usb_ep_set_maxpacket_limit(&ep->end_point, hw_ep->max_packet_sz_tx); in init_peripheral_ep()
1721 usb_ep_set_maxpacket_limit(&ep->end_point, hw_ep->max_packet_sz_rx); in init_peripheral_ep()
1722 ep->end_point.caps.type_iso = true; in init_peripheral_ep()
1723 ep->end_point.caps.type_bulk = true; in init_peripheral_ep()
1724 ep->end_point.caps.type_int = true; in init_peripheral_ep()
1725 ep->end_point.ops = &musb_ep_ops; in init_peripheral_ep()
1726 list_add_tail(&ep->end_point.ep_list, &musb->g.ep_list); in init_peripheral_ep()
1729 if (!epnum || hw_ep->is_shared_fifo) { in init_peripheral_ep()
1730 ep->end_point.caps.dir_in = true; in init_peripheral_ep()
1731 ep->end_point.caps.dir_out = true; in init_peripheral_ep()
1733 ep->end_point.caps.dir_in = true; in init_peripheral_ep()
1735 ep->end_point.caps.dir_out = true; in init_peripheral_ep()
1748 INIT_LIST_HEAD(&(musb->g.ep_list)); in musb_g_init_endpoints()
1750 for (epnum = 0, hw_ep = musb->endpoints; in musb_g_init_endpoints()
1751 epnum < musb->nr_endpoints; in musb_g_init_endpoints()
1753 if (hw_ep->is_shared_fifo /* || !epnum */) { in musb_g_init_endpoints()
1754 init_peripheral_ep(musb, &hw_ep->ep_in, epnum, 0); in musb_g_init_endpoints()
1756 if (hw_ep->max_packet_sz_tx) { in musb_g_init_endpoints()
1757 init_peripheral_ep(musb, &hw_ep->ep_in, in musb_g_init_endpoints()
1760 if (hw_ep->max_packet_sz_rx) { in musb_g_init_endpoints()
1761 init_peripheral_ep(musb, &hw_ep->ep_out, in musb_g_init_endpoints()
1780 musb->g.ops = &musb_gadget_operations; in musb_gadget_setup()
1781 musb->g.max_speed = USB_SPEED_HIGH; in musb_gadget_setup()
1782 musb->g.speed = USB_SPEED_UNKNOWN; in musb_gadget_setup()
1788 musb->g.name = musb_driver_name; in musb_gadget_setup()
1790 musb->g.is_otg = 0; in musb_gadget_setup()
1791 INIT_DELAYED_WORK(&musb->gadget_work, musb_gadget_work); in musb_gadget_setup()
1794 musb->is_active = 0; in musb_gadget_setup()
1797 status = usb_add_gadget_udc(musb->controller, &musb->g); in musb_gadget_setup()
1803 musb->g.dev.parent = NULL; in musb_gadget_setup()
1804 device_unregister(&musb->g.dev); in musb_gadget_setup()
1810 if (musb->port_mode == MUSB_HOST) in musb_gadget_cleanup()
1813 cancel_delayed_work_sync(&musb->gadget_work); in musb_gadget_cleanup()
1814 usb_del_gadget_udc(&musb->g); in musb_gadget_cleanup()
1821 * -EINVAL something went wrong (not driver)
1822 * -EBUSY another gadget is already using the controller
1823 * -ENOMEM no memory to perform the operation
1835 if (driver->max_speed < USB_SPEED_HIGH) { in musb_gadget_start()
1836 retval = -EINVAL; in musb_gadget_start()
1840 pm_runtime_get_sync(musb->controller); in musb_gadget_start()
1842 musb->softconnect = 0; in musb_gadget_start()
1843 musb->gadget_driver = driver; in musb_gadget_start()
1845 spin_lock_irqsave(&musb->lock, flags); in musb_gadget_start()
1846 musb->is_active = 1; in musb_gadget_start()
1848 if (musb->xceiv) in musb_gadget_start()
1849 otg_set_peripheral(musb->xceiv->otg, &musb->g); in musb_gadget_start()
1851 phy_set_mode(musb->phy, PHY_MODE_USB_DEVICE); in musb_gadget_start()
1854 spin_unlock_irqrestore(&musb->lock, flags); in musb_gadget_start()
1862 if (musb->xceiv && musb->xceiv->last_event == USB_EVENT_ID) in musb_gadget_start()
1865 pm_runtime_mark_last_busy(musb->controller); in musb_gadget_start()
1866 pm_runtime_put_autosuspend(musb->controller); in musb_gadget_start()
1885 pm_runtime_get_sync(musb->controller); in musb_gadget_stop()
1892 spin_lock_irqsave(&musb->lock, flags); in musb_gadget_stop()
1896 (void) musb_gadget_vbus_draw(&musb->g, 0); in musb_gadget_stop()
1901 if (musb->xceiv) in musb_gadget_stop()
1902 otg_set_peripheral(musb->xceiv->otg, NULL); in musb_gadget_stop()
1904 phy_set_mode(musb->phy, PHY_MODE_INVALID); in musb_gadget_stop()
1906 musb->is_active = 0; in musb_gadget_stop()
1907 musb->gadget_driver = NULL; in musb_gadget_stop()
1909 spin_unlock_irqrestore(&musb->lock, flags); in musb_gadget_stop()
1918 pm_runtime_mark_last_busy(musb->controller); in musb_gadget_stop()
1919 pm_runtime_put_autosuspend(musb->controller); in musb_gadget_stop()
1924 /* ----------------------------------------------------------------------- */
1930 musb->is_suspended = 0; in musb_g_resume()
1936 musb->is_active = 1; in musb_g_resume()
1937 if (musb->gadget_driver && musb->gadget_driver->resume) { in musb_g_resume()
1938 spin_unlock(&musb->lock); in musb_g_resume()
1939 musb->gadget_driver->resume(&musb->g); in musb_g_resume()
1940 spin_lock(&musb->lock); in musb_g_resume()
1954 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); in musb_g_suspend()
1963 musb->is_suspended = 1; in musb_g_suspend()
1964 if (musb->gadget_driver && musb->gadget_driver->suspend) { in musb_g_suspend()
1965 spin_unlock(&musb->lock); in musb_g_suspend()
1966 musb->gadget_driver->suspend(&musb->g); in musb_g_suspend()
1967 spin_lock(&musb->lock); in musb_g_suspend()
1982 musb_gadget_wakeup(&musb->g); in musb_g_wakeup()
1988 void __iomem *mregs = musb->mregs; in musb_g_disconnect()
1996 /* don't draw vbus until new b-default session */ in musb_g_disconnect()
1997 (void) musb_gadget_vbus_draw(&musb->g, 0); in musb_g_disconnect()
1999 musb->g.speed = USB_SPEED_UNKNOWN; in musb_g_disconnect()
2000 if (musb->gadget_driver && musb->gadget_driver->disconnect) { in musb_g_disconnect()
2001 spin_unlock(&musb->lock); in musb_g_disconnect()
2002 musb->gadget_driver->disconnect(&musb->g); in musb_g_disconnect()
2003 spin_lock(&musb->lock); in musb_g_disconnect()
2027 musb->is_active = 0; in musb_g_disconnect()
2031 __releases(musb->lock) in musb_g_reset()
2032 __acquires(musb->lock) in musb_g_reset()
2034 void __iomem *mbase = musb->mregs; in musb_g_reset()
2040 ? "B-Device" : "A-Device", in musb_g_reset()
2041 musb->gadget_driver in musb_g_reset()
2042 ? musb->gadget_driver->driver.name in musb_g_reset()
2047 if (musb->gadget_driver && musb->g.speed != USB_SPEED_UNKNOWN) { in musb_g_reset()
2048 spin_unlock(&musb->lock); in musb_g_reset()
2049 usb_gadget_udc_reset(&musb->g, musb->gadget_driver); in musb_g_reset()
2050 spin_lock(&musb->lock); in musb_g_reset()
2060 musb->g.speed = (power & MUSB_POWER_HSMODE) in musb_g_reset()
2064 musb->is_active = 1; in musb_g_reset()
2065 musb->is_suspended = 0; in musb_g_reset()
2067 musb->address = 0; in musb_g_reset()
2068 musb->ep0_state = MUSB_EP0_STAGE_SETUP; in musb_g_reset()
2070 musb->may_wakeup = 0; in musb_g_reset()
2071 musb->g.b_hnp_enable = 0; in musb_g_reset()
2072 musb->g.a_alt_hnp_support = 0; in musb_g_reset()
2073 musb->g.a_hnp_support = 0; in musb_g_reset()
2074 musb->g.quirk_zlp_not_supp = 1; in musb_g_reset()
2076 /* Normal reset, as B-Device; in musb_g_reset()
2077 * or else after HNP, as A-Device in musb_g_reset()
2079 if (!musb->g.is_otg) { in musb_g_reset()
2086 musb->g.is_a_peripheral = 0; in musb_g_reset()
2089 musb->g.is_a_peripheral = 0; in musb_g_reset()
2092 musb->g.is_a_peripheral = 1; in musb_g_reset()
2096 (void) musb_gadget_vbus_draw(&musb->g, 8); in musb_g_reset()