From 90fccb529d241b55829701cfb9eb3086570f38b8 Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Tue, 15 Jul 2014 13:09:45 +0200 Subject: usb: gadget: Gadget directory cleanup - group UDC drivers The drivers/usb/gadget directory contains many files. Files which are related can be distributed into separate directories. This patch moves the UDC drivers into a separate directory. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/omap_udc.c | 3038 ----------------------------------------- 1 file changed, 3038 deletions(-) delete mode 100644 drivers/usb/gadget/omap_udc.c (limited to 'drivers/usb/gadget/omap_udc.c') diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c deleted file mode 100644 index e731373fd4d7..000000000000 --- a/drivers/usb/gadget/omap_udc.c +++ /dev/null @@ -1,3038 +0,0 @@ -/* - * omap_udc.c -- for OMAP full speed udc; most chips support OTG. - * - * Copyright (C) 2004 Texas Instruments, Inc. - * Copyright (C) 2004-2005 David Brownell - * - * OMAP2 & DMA support by Kyungmin Park - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#undef DEBUG -#undef VERBOSE - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -#include - -#include - -#include "omap_udc.h" - -#undef USB_TRACE - -/* bulk DMA seems to be behaving for both IN and OUT */ -#define USE_DMA - -/* ISO too */ -#define USE_ISO - -#define DRIVER_DESC "OMAP UDC driver" -#define DRIVER_VERSION "4 October 2004" - -#define OMAP_DMA_USB_W2FC_TX0 29 -#define OMAP_DMA_USB_W2FC_RX0 26 - -/* - * The OMAP UDC needs _very_ early endpoint setup: before enabling the - * D+ pullup to allow enumeration. That's too early for the gadget - * framework to use from usb_endpoint_enable(), which happens after - * enumeration as part of activating an interface. (But if we add an - * optional new "UDC not yet running" state to the gadget driver model, - * even just during driver binding, the endpoint autoconfig logic is the - * natural spot to manufacture new endpoints.) - * - * So instead of using endpoint enable calls to control the hardware setup, - * this driver defines a "fifo mode" parameter. It's used during driver - * initialization to choose among a set of pre-defined endpoint configs. - * See omap_udc_setup() for available modes, or to add others. That code - * lives in an init section, so use this driver as a module if you need - * to change the fifo mode after the kernel boots. - * - * Gadget drivers normally ignore endpoints they don't care about, and - * won't include them in configuration descriptors. That means only - * misbehaving hosts would even notice they exist. - */ -#ifdef USE_ISO -static unsigned fifo_mode = 3; -#else -static unsigned fifo_mode; -#endif - -/* "modprobe omap_udc fifo_mode=42", or else as a kernel - * boot parameter "omap_udc:fifo_mode=42" - */ -module_param(fifo_mode, uint, 0); -MODULE_PARM_DESC(fifo_mode, "endpoint configuration"); - -#ifdef USE_DMA -static bool use_dma = 1; - -/* "modprobe omap_udc use_dma=y", or else as a kernel - * boot parameter "omap_udc:use_dma=y" - */ -module_param(use_dma, bool, 0); -MODULE_PARM_DESC(use_dma, "enable/disable DMA"); -#else /* !USE_DMA */ - -/* save a bit of code */ -#define use_dma 0 -#endif /* !USE_DMA */ - - -static const char driver_name[] = "omap_udc"; -static const char driver_desc[] = DRIVER_DESC; - -/*-------------------------------------------------------------------------*/ - -/* there's a notion of "current endpoint" for modifying endpoint - * state, and PIO access to its FIFO. - */ - -static void use_ep(struct omap_ep *ep, u16 select) -{ - u16 num = ep->bEndpointAddress & 0x0f; - - if (ep->bEndpointAddress & USB_DIR_IN) - num |= UDC_EP_DIR; - omap_writew(num | select, UDC_EP_NUM); - /* when select, MUST deselect later !! */ -} - -static inline void deselect_ep(void) -{ - u16 w; - - w = omap_readw(UDC_EP_NUM); - w &= ~UDC_EP_SEL; - omap_writew(w, UDC_EP_NUM); - /* 6 wait states before TX will happen */ -} - -static void dma_channel_claim(struct omap_ep *ep, unsigned preferred); - -/*-------------------------------------------------------------------------*/ - -static int omap_ep_enable(struct usb_ep *_ep, - const struct usb_endpoint_descriptor *desc) -{ - struct omap_ep *ep = container_of(_ep, struct omap_ep, ep); - struct omap_udc *udc; - unsigned long flags; - u16 maxp; - - /* catch various bogus parameters */ - if (!_ep || !desc - || desc->bDescriptorType != USB_DT_ENDPOINT - || ep->bEndpointAddress != desc->bEndpointAddress - || ep->maxpacket < usb_endpoint_maxp(desc)) { - DBG("%s, bad ep or descriptor\n", __func__); - return -EINVAL; - } - maxp = usb_endpoint_maxp(desc); - if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK - && maxp != ep->maxpacket) - || usb_endpoint_maxp(desc) > ep->maxpacket - || !desc->wMaxPacketSize) { - DBG("%s, bad %s maxpacket\n", __func__, _ep->name); - return -ERANGE; - } - -#ifdef USE_ISO - if ((desc->bmAttributes == USB_ENDPOINT_XFER_ISOC - && desc->bInterval != 1)) { - /* hardware wants period = 1; USB allows 2^(Interval-1) */ - DBG("%s, unsupported ISO period %dms\n", _ep->name, - 1 << (desc->bInterval - 1)); - return -EDOM; - } -#else - if (desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { - DBG("%s, ISO nyet\n", _ep->name); - return -EDOM; - } -#endif - - /* xfer types must match, except that interrupt ~= bulk */ - if (ep->bmAttributes != desc->bmAttributes - && ep->bmAttributes != USB_ENDPOINT_XFER_BULK - && desc->bmAttributes != USB_ENDPOINT_XFER_INT) { - DBG("%s, %s type mismatch\n", __func__, _ep->name); - return -EINVAL; - } - - udc = ep->udc; - if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) { - DBG("%s, bogus device state\n", __func__); - return -ESHUTDOWN; - } - - spin_lock_irqsave(&udc->lock, flags); - - ep->ep.desc = desc; - ep->irqs = 0; - ep->stopped = 0; - ep->ep.maxpacket = maxp; - - /* set endpoint to initial state */ - ep->dma_channel = 0; - ep->has_dma = 0; - ep->lch = -1; - use_ep(ep, UDC_EP_SEL); - omap_writew(udc->clr_halt, UDC_CTRL); - ep->ackwait = 0; - deselect_ep(); - - if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC) - list_add(&ep->iso, &udc->iso); - - /* maybe assign a DMA channel to this endpoint */ - if (use_dma && desc->bmAttributes == USB_ENDPOINT_XFER_BULK) - /* FIXME ISO can dma, but prefers first channel */ - dma_channel_claim(ep, 0); - - /* PIO OUT may RX packets */ - if (desc->bmAttributes != USB_ENDPOINT_XFER_ISOC - && !ep->has_dma - && !(ep->bEndpointAddress & USB_DIR_IN)) { - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - ep->ackwait = 1 + ep->double_buf; - } - - spin_unlock_irqrestore(&udc->lock, flags); - VDBG("%s enabled\n", _ep->name); - return 0; -} - -static void nuke(struct omap_ep *, int status); - -static int omap_ep_disable(struct usb_ep *_ep) -{ - struct omap_ep *ep = container_of(_ep, struct omap_ep, ep); - unsigned long flags; - - if (!_ep || !ep->ep.desc) { - DBG("%s, %s not enabled\n", __func__, - _ep ? ep->ep.name : NULL); - return -EINVAL; - } - - spin_lock_irqsave(&ep->udc->lock, flags); - ep->ep.desc = NULL; - nuke(ep, -ESHUTDOWN); - ep->ep.maxpacket = ep->maxpacket; - ep->has_dma = 0; - omap_writew(UDC_SET_HALT, UDC_CTRL); - list_del_init(&ep->iso); - del_timer(&ep->timer); - - spin_unlock_irqrestore(&ep->udc->lock, flags); - - VDBG("%s disabled\n", _ep->name); - return 0; -} - -/*-------------------------------------------------------------------------*/ - -static struct usb_request * -omap_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) -{ - struct omap_req *req; - - req = kzalloc(sizeof(*req), gfp_flags); - if (!req) - return NULL; - - INIT_LIST_HEAD(&req->queue); - - return &req->req; -} - -static void -omap_free_request(struct usb_ep *ep, struct usb_request *_req) -{ - struct omap_req *req = container_of(_req, struct omap_req, req); - - kfree(req); -} - -/*-------------------------------------------------------------------------*/ - -static void -done(struct omap_ep *ep, struct omap_req *req, int status) -{ - struct omap_udc *udc = ep->udc; - unsigned stopped = ep->stopped; - - list_del_init(&req->queue); - - if (req->req.status == -EINPROGRESS) - req->req.status = status; - else - status = req->req.status; - - if (use_dma && ep->has_dma) - usb_gadget_unmap_request(&udc->gadget, &req->req, - (ep->bEndpointAddress & USB_DIR_IN)); - -#ifndef USB_TRACE - if (status && status != -ESHUTDOWN) -#endif - VDBG("complete %s req %p stat %d len %u/%u\n", - ep->ep.name, &req->req, status, - req->req.actual, req->req.length); - - /* don't modify queue heads during completion callback */ - ep->stopped = 1; - spin_unlock(&ep->udc->lock); - req->req.complete(&ep->ep, &req->req); - spin_lock(&ep->udc->lock); - ep->stopped = stopped; -} - -/*-------------------------------------------------------------------------*/ - -#define UDC_FIFO_FULL (UDC_NON_ISO_FIFO_FULL | UDC_ISO_FIFO_FULL) -#define UDC_FIFO_UNWRITABLE (UDC_EP_HALTED | UDC_FIFO_FULL) - -#define FIFO_EMPTY (UDC_NON_ISO_FIFO_EMPTY | UDC_ISO_FIFO_EMPTY) -#define FIFO_UNREADABLE (UDC_EP_HALTED | FIFO_EMPTY) - -static inline int -write_packet(u8 *buf, struct omap_req *req, unsigned max) -{ - unsigned len; - u16 *wp; - - len = min(req->req.length - req->req.actual, max); - req->req.actual += len; - - max = len; - if (likely((((int)buf) & 1) == 0)) { - wp = (u16 *)buf; - while (max >= 2) { - omap_writew(*wp++, UDC_DATA); - max -= 2; - } - buf = (u8 *)wp; - } - while (max--) - omap_writeb(*buf++, UDC_DATA); - return len; -} - -/* FIXME change r/w fifo calling convention */ - - -/* return: 0 = still running, 1 = completed, negative = errno */ -static int write_fifo(struct omap_ep *ep, struct omap_req *req) -{ - u8 *buf; - unsigned count; - int is_last; - u16 ep_stat; - - buf = req->req.buf + req->req.actual; - prefetch(buf); - - /* PIO-IN isn't double buffered except for iso */ - ep_stat = omap_readw(UDC_STAT_FLG); - if (ep_stat & UDC_FIFO_UNWRITABLE) - return 0; - - count = ep->ep.maxpacket; - count = write_packet(buf, req, count); - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - ep->ackwait = 1; - - /* last packet is often short (sometimes a zlp) */ - if (count != ep->ep.maxpacket) - is_last = 1; - else if (req->req.length == req->req.actual - && !req->req.zero) - is_last = 1; - else - is_last = 0; - - /* NOTE: requests complete when all IN data is in a - * FIFO (or sometimes later, if a zlp was needed). - * Use usb_ep_fifo_status() where needed. - */ - if (is_last) - done(ep, req, 0); - return is_last; -} - -static inline int -read_packet(u8 *buf, struct omap_req *req, unsigned avail) -{ - unsigned len; - u16 *wp; - - len = min(req->req.length - req->req.actual, avail); - req->req.actual += len; - avail = len; - - if (likely((((int)buf) & 1) == 0)) { - wp = (u16 *)buf; - while (avail >= 2) { - *wp++ = omap_readw(UDC_DATA); - avail -= 2; - } - buf = (u8 *)wp; - } - while (avail--) - *buf++ = omap_readb(UDC_DATA); - return len; -} - -/* return: 0 = still running, 1 = queue empty, negative = errno */ -static int read_fifo(struct omap_ep *ep, struct omap_req *req) -{ - u8 *buf; - unsigned count, avail; - int is_last; - - buf = req->req.buf + req->req.actual; - prefetchw(buf); - - for (;;) { - u16 ep_stat = omap_readw(UDC_STAT_FLG); - - is_last = 0; - if (ep_stat & FIFO_EMPTY) { - if (!ep->double_buf) - break; - ep->fnf = 1; - } - if (ep_stat & UDC_EP_HALTED) - break; - - if (ep_stat & UDC_FIFO_FULL) - avail = ep->ep.maxpacket; - else { - avail = omap_readw(UDC_RXFSTAT); - ep->fnf = ep->double_buf; - } - count = read_packet(buf, req, avail); - - /* partial packet reads may not be errors */ - if (count < ep->ep.maxpacket) { - is_last = 1; - /* overflowed this request? flush extra data */ - if (count != avail) { - req->req.status = -EOVERFLOW; - avail -= count; - while (avail--) - omap_readw(UDC_DATA); - } - } else if (req->req.length == req->req.actual) - is_last = 1; - else - is_last = 0; - - if (!ep->bEndpointAddress) - break; - if (is_last) - done(ep, req, 0); - break; - } - return is_last; -} - -/*-------------------------------------------------------------------------*/ - -static u16 dma_src_len(struct omap_ep *ep, dma_addr_t start) -{ - dma_addr_t end; - - /* IN-DMA needs this on fault/cancel paths, so 15xx misreports - * the last transfer's bytecount by more than a FIFO's worth. - */ - if (cpu_is_omap15xx()) - return 0; - - end = omap_get_dma_src_pos(ep->lch); - if (end == ep->dma_counter) - return 0; - - end |= start & (0xffff << 16); - if (end < start) - end += 0x10000; - return end - start; -} - -static u16 dma_dest_len(struct omap_ep *ep, dma_addr_t start) -{ - dma_addr_t end; - - end = omap_get_dma_dst_pos(ep->lch); - if (end == ep->dma_counter) - return 0; - - end |= start & (0xffff << 16); - if (cpu_is_omap15xx()) - end++; - if (end < start) - end += 0x10000; - return end - start; -} - - -/* Each USB transfer request using DMA maps to one or more DMA transfers. - * When DMA completion isn't request completion, the UDC continues with - * the next DMA transfer for that USB transfer. - */ - -static void next_in_dma(struct omap_ep *ep, struct omap_req *req) -{ - u16 txdma_ctrl, w; - unsigned length = req->req.length - req->req.actual; - const int sync_mode = cpu_is_omap15xx() - ? OMAP_DMA_SYNC_FRAME - : OMAP_DMA_SYNC_ELEMENT; - int dma_trigger = 0; - - /* measure length in either bytes or packets */ - if ((cpu_is_omap16xx() && length <= UDC_TXN_TSC) - || (cpu_is_omap15xx() && length < ep->maxpacket)) { - txdma_ctrl = UDC_TXN_EOT | length; - omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S8, - length, 1, sync_mode, dma_trigger, 0); - } else { - length = min(length / ep->maxpacket, - (unsigned) UDC_TXN_TSC + 1); - txdma_ctrl = length; - omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16, - ep->ep.maxpacket >> 1, length, sync_mode, - dma_trigger, 0); - length *= ep->maxpacket; - } - omap_set_dma_src_params(ep->lch, OMAP_DMA_PORT_EMIFF, - OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual, - 0, 0); - - omap_start_dma(ep->lch); - ep->dma_counter = omap_get_dma_src_pos(ep->lch); - w = omap_readw(UDC_DMA_IRQ_EN); - w |= UDC_TX_DONE_IE(ep->dma_channel); - omap_writew(w, UDC_DMA_IRQ_EN); - omap_writew(UDC_TXN_START | txdma_ctrl, UDC_TXDMA(ep->dma_channel)); - req->dma_bytes = length; -} - -static void finish_in_dma(struct omap_ep *ep, struct omap_req *req, int status) -{ - u16 w; - - if (status == 0) { - req->req.actual += req->dma_bytes; - - /* return if this request needs to send data or zlp */ - if (req->req.actual < req->req.length) - return; - if (req->req.zero - && req->dma_bytes != 0 - && (req->req.actual % ep->maxpacket) == 0) - return; - } else - req->req.actual += dma_src_len(ep, req->req.dma - + req->req.actual); - - /* tx completion */ - omap_stop_dma(ep->lch); - w = omap_readw(UDC_DMA_IRQ_EN); - w &= ~UDC_TX_DONE_IE(ep->dma_channel); - omap_writew(w, UDC_DMA_IRQ_EN); - done(ep, req, status); -} - -static void next_out_dma(struct omap_ep *ep, struct omap_req *req) -{ - unsigned packets = req->req.length - req->req.actual; - int dma_trigger = 0; - u16 w; - - /* set up this DMA transfer, enable the fifo, start */ - packets /= ep->ep.maxpacket; - packets = min(packets, (unsigned)UDC_RXN_TC + 1); - req->dma_bytes = packets * ep->ep.maxpacket; - omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16, - ep->ep.maxpacket >> 1, packets, - OMAP_DMA_SYNC_ELEMENT, - dma_trigger, 0); - omap_set_dma_dest_params(ep->lch, OMAP_DMA_PORT_EMIFF, - OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual, - 0, 0); - ep->dma_counter = omap_get_dma_dst_pos(ep->lch); - - omap_writew(UDC_RXN_STOP | (packets - 1), UDC_RXDMA(ep->dma_channel)); - w = omap_readw(UDC_DMA_IRQ_EN); - w |= UDC_RX_EOT_IE(ep->dma_channel); - omap_writew(w, UDC_DMA_IRQ_EN); - omap_writew(ep->bEndpointAddress & 0xf, UDC_EP_NUM); - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - - omap_start_dma(ep->lch); -} - -static void -finish_out_dma(struct omap_ep *ep, struct omap_req *req, int status, int one) -{ - u16 count, w; - - if (status == 0) - ep->dma_counter = (u16) (req->req.dma + req->req.actual); - count = dma_dest_len(ep, req->req.dma + req->req.actual); - count += req->req.actual; - if (one) - count--; - if (count <= req->req.length) - req->req.actual = count; - - if (count != req->dma_bytes || status) - omap_stop_dma(ep->lch); - - /* if this wasn't short, request may need another transfer */ - else if (req->req.actual < req->req.length) - return; - - /* rx completion */ - w = omap_readw(UDC_DMA_IRQ_EN); - w &= ~UDC_RX_EOT_IE(ep->dma_channel); - omap_writew(w, UDC_DMA_IRQ_EN); - done(ep, req, status); -} - -static void dma_irq(struct omap_udc *udc, u16 irq_src) -{ - u16 dman_stat = omap_readw(UDC_DMAN_STAT); - struct omap_ep *ep; - struct omap_req *req; - - /* IN dma: tx to host */ - if (irq_src & UDC_TXN_DONE) { - ep = &udc->ep[16 + UDC_DMA_TX_SRC(dman_stat)]; - ep->irqs++; - /* can see TXN_DONE after dma abort */ - if (!list_empty(&ep->queue)) { - req = container_of(ep->queue.next, - struct omap_req, queue); - finish_in_dma(ep, req, 0); - } - omap_writew(UDC_TXN_DONE, UDC_IRQ_SRC); - - if (!list_empty(&ep->queue)) { - req = container_of(ep->queue.next, - struct omap_req, queue); - next_in_dma(ep, req); - } - } - - /* OUT dma: rx from host */ - if (irq_src & UDC_RXN_EOT) { - ep = &udc->ep[UDC_DMA_RX_SRC(dman_stat)]; - ep->irqs++; - /* can see RXN_EOT after dma abort */ - if (!list_empty(&ep->queue)) { - req = container_of(ep->queue.next, - struct omap_req, queue); - finish_out_dma(ep, req, 0, dman_stat & UDC_DMA_RX_SB); - } - omap_writew(UDC_RXN_EOT, UDC_IRQ_SRC); - - if (!list_empty(&ep->queue)) { - req = container_of(ep->queue.next, - struct omap_req, queue); - next_out_dma(ep, req); - } - } - - if (irq_src & UDC_RXN_CNT) { - ep = &udc->ep[UDC_DMA_RX_SRC(dman_stat)]; - ep->irqs++; - /* omap15xx does this unasked... */ - VDBG("%s, RX_CNT irq?\n", ep->ep.name); - omap_writew(UDC_RXN_CNT, UDC_IRQ_SRC); - } -} - -static void dma_error(int lch, u16 ch_status, void *data) -{ - struct omap_ep *ep = data; - - /* if ch_status & OMAP_DMA_DROP_IRQ ... */ - /* if ch_status & OMAP1_DMA_TOUT_IRQ ... */ - ERR("%s dma error, lch %d status %02x\n", ep->ep.name, lch, ch_status); - - /* complete current transfer ... */ -} - -static void dma_channel_claim(struct omap_ep *ep, unsigned channel) -{ - u16 reg; - int status, restart, is_in; - int dma_channel; - - is_in = ep->bEndpointAddress & USB_DIR_IN; - if (is_in) - reg = omap_readw(UDC_TXDMA_CFG); - else - reg = omap_readw(UDC_RXDMA_CFG); - reg |= UDC_DMA_REQ; /* "pulse" activated */ - - ep->dma_channel = 0; - ep->lch = -1; - if (channel == 0 || channel > 3) { - if ((reg & 0x0f00) == 0) - channel = 3; - else if ((reg & 0x00f0) == 0) - channel = 2; - else if ((reg & 0x000f) == 0) /* preferred for ISO */ - channel = 1; - else { - status = -EMLINK; - goto just_restart; - } - } - reg |= (0x0f & ep->bEndpointAddress) << (4 * (channel - 1)); - ep->dma_channel = channel; - - if (is_in) { - dma_channel = OMAP_DMA_USB_W2FC_TX0 - 1 + channel; - status = omap_request_dma(dma_channel, - ep->ep.name, dma_error, ep, &ep->lch); - if (status == 0) { - omap_writew(reg, UDC_TXDMA_CFG); - /* EMIFF or SDRC */ - omap_set_dma_src_burst_mode(ep->lch, - OMAP_DMA_DATA_BURST_4); - omap_set_dma_src_data_pack(ep->lch, 1); - /* TIPB */ - omap_set_dma_dest_params(ep->lch, - OMAP_DMA_PORT_TIPB, - OMAP_DMA_AMODE_CONSTANT, - UDC_DATA_DMA, - 0, 0); - } - } else { - dma_channel = OMAP_DMA_USB_W2FC_RX0 - 1 + channel; - status = omap_request_dma(dma_channel, - ep->ep.name, dma_error, ep, &ep->lch); - if (status == 0) { - omap_writew(reg, UDC_RXDMA_CFG); - /* TIPB */ - omap_set_dma_src_params(ep->lch, - OMAP_DMA_PORT_TIPB, - OMAP_DMA_AMODE_CONSTANT, - UDC_DATA_DMA, - 0, 0); - /* EMIFF or SDRC */ - omap_set_dma_dest_burst_mode(ep->lch, - OMAP_DMA_DATA_BURST_4); - omap_set_dma_dest_data_pack(ep->lch, 1); - } - } - if (status) - ep->dma_channel = 0; - else { - ep->has_dma = 1; - omap_disable_dma_irq(ep->lch, OMAP_DMA_BLOCK_IRQ); - - /* channel type P: hw synch (fifo) */ - if (!cpu_is_omap15xx()) - omap_set_dma_channel_mode(ep->lch, OMAP_DMA_LCH_P); - } - -just_restart: - /* restart any queue, even if the claim failed */ - restart = !ep->stopped && !list_empty(&ep->queue); - - if (status) - DBG("%s no dma channel: %d%s\n", ep->ep.name, status, - restart ? " (restart)" : ""); - else - DBG("%s claimed %cxdma%d lch %d%s\n", ep->ep.name, - is_in ? 't' : 'r', - ep->dma_channel - 1, ep->lch, - restart ? " (restart)" : ""); - - if (restart) { - struct omap_req *req; - req = container_of(ep->queue.next, struct omap_req, queue); - if (ep->has_dma) - (is_in ? next_in_dma : next_out_dma)(ep, req); - else { - use_ep(ep, UDC_EP_SEL); - (is_in ? write_fifo : read_fifo)(ep, req); - deselect_ep(); - if (!is_in) { - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - ep->ackwait = 1 + ep->double_buf; - } - /* IN: 6 wait states before it'll tx */ - } - } -} - -static void dma_channel_release(struct omap_ep *ep) -{ - int shift = 4 * (ep->dma_channel - 1); - u16 mask = 0x0f << shift; - struct omap_req *req; - int active; - - /* abort any active usb transfer request */ - if (!list_empty(&ep->queue)) - req = container_of(ep->queue.next, struct omap_req, queue); - else - req = NULL; - - active = omap_get_dma_active_status(ep->lch); - - DBG("%s release %s %cxdma%d %p\n", ep->ep.name, - active ? "active" : "idle", - (ep->bEndpointAddress & USB_DIR_IN) ? 't' : 'r', - ep->dma_channel - 1, req); - - /* NOTE: re-setting RX_REQ/TX_REQ because of a chip bug (before - * OMAP 1710 ES2.0) where reading the DMA_CFG can clear them. - */ - - /* wait till current packet DMA finishes, and fifo empties */ - if (ep->bEndpointAddress & USB_DIR_IN) { - omap_writew((omap_readw(UDC_TXDMA_CFG) & ~mask) | UDC_DMA_REQ, - UDC_TXDMA_CFG); - - if (req) { - finish_in_dma(ep, req, -ECONNRESET); - - /* clear FIFO; hosts probably won't empty it */ - use_ep(ep, UDC_EP_SEL); - omap_writew(UDC_CLR_EP, UDC_CTRL); - deselect_ep(); - } - while (omap_readw(UDC_TXDMA_CFG) & mask) - udelay(10); - } else { - omap_writew((omap_readw(UDC_RXDMA_CFG) & ~mask) | UDC_DMA_REQ, - UDC_RXDMA_CFG); - - /* dma empties the fifo */ - while (omap_readw(UDC_RXDMA_CFG) & mask) - udelay(10); - if (req) - finish_out_dma(ep, req, -ECONNRESET, 0); - } - omap_free_dma(ep->lch); - ep->dma_channel = 0; - ep->lch = -1; - /* has_dma still set, till endpoint is fully quiesced */ -} - - -/*-------------------------------------------------------------------------*/ - -static int -omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) -{ - struct omap_ep *ep = container_of(_ep, struct omap_ep, ep); - struct omap_req *req = container_of(_req, struct omap_req, req); - struct omap_udc *udc; - unsigned long flags; - int is_iso = 0; - - /* catch various bogus parameters */ - if (!_req || !req->req.complete || !req->req.buf - || !list_empty(&req->queue)) { - DBG("%s, bad params\n", __func__); - return -EINVAL; - } - if (!_ep || (!ep->ep.desc && ep->bEndpointAddress)) { - DBG("%s, bad ep\n", __func__); - return -EINVAL; - } - if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC) { - if (req->req.length > ep->ep.maxpacket) - return -EMSGSIZE; - is_iso = 1; - } - - /* this isn't bogus, but OMAP DMA isn't the only hardware to - * have a hard time with partial packet reads... reject it. - */ - if (use_dma - && ep->has_dma - && ep->bEndpointAddress != 0 - && (ep->bEndpointAddress & USB_DIR_IN) == 0 - && (req->req.length % ep->ep.maxpacket) != 0) { - DBG("%s, no partial packet OUT reads\n", __func__); - return -EMSGSIZE; - } - - udc = ep->udc; - if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) - return -ESHUTDOWN; - - if (use_dma && ep->has_dma) - usb_gadget_map_request(&udc->gadget, &req->req, - (ep->bEndpointAddress & USB_DIR_IN)); - - VDBG("%s queue req %p, len %d buf %p\n", - ep->ep.name, _req, _req->length, _req->buf); - - spin_lock_irqsave(&udc->lock, flags); - - req->req.status = -EINPROGRESS; - req->req.actual = 0; - - /* maybe kickstart non-iso i/o queues */ - if (is_iso) { - u16 w; - - w = omap_readw(UDC_IRQ_EN); - w |= UDC_SOF_IE; - omap_writew(w, UDC_IRQ_EN); - } else if (list_empty(&ep->queue) && !ep->stopped && !ep->ackwait) { - int is_in; - - if (ep->bEndpointAddress == 0) { - if (!udc->ep0_pending || !list_empty(&ep->queue)) { - spin_unlock_irqrestore(&udc->lock, flags); - return -EL2HLT; - } - - /* empty DATA stage? */ - is_in = udc->ep0_in; - if (!req->req.length) { - - /* chip became CONFIGURED or ADDRESSED - * earlier; drivers may already have queued - * requests to non-control endpoints - */ - if (udc->ep0_set_config) { - u16 irq_en = omap_readw(UDC_IRQ_EN); - - irq_en |= UDC_DS_CHG_IE | UDC_EP0_IE; - if (!udc->ep0_reset_config) - irq_en |= UDC_EPN_RX_IE - | UDC_EPN_TX_IE; - omap_writew(irq_en, UDC_IRQ_EN); - } - - /* STATUS for zero length DATA stages is - * always an IN ... even for IN transfers, - * a weird case which seem to stall OMAP. - */ - omap_writew(UDC_EP_SEL | UDC_EP_DIR, - UDC_EP_NUM); - omap_writew(UDC_CLR_EP, UDC_CTRL); - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - omap_writew(UDC_EP_DIR, UDC_EP_NUM); - - /* cleanup */ - udc->ep0_pending = 0; - done(ep, req, 0); - req = NULL; - - /* non-empty DATA stage */ - } else if (is_in) { - omap_writew(UDC_EP_SEL | UDC_EP_DIR, - UDC_EP_NUM); - } else { - if (udc->ep0_setup) - goto irq_wait; - omap_writew(UDC_EP_SEL, UDC_EP_NUM); - } - } else { - is_in = ep->bEndpointAddress & USB_DIR_IN; - if (!ep->has_dma) - use_ep(ep, UDC_EP_SEL); - /* if ISO: SOF IRQs must be enabled/disabled! */ - } - - if (ep->has_dma) - (is_in ? next_in_dma : next_out_dma)(ep, req); - else if (req) { - if ((is_in ? write_fifo : read_fifo)(ep, req) == 1) - req = NULL; - deselect_ep(); - if (!is_in) { - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - ep->ackwait = 1 + ep->double_buf; - } - /* IN: 6 wait states before it'll tx */ - } - } - -irq_wait: - /* irq handler advances the queue */ - if (req != NULL) - list_add_tail(&req->queue, &ep->queue); - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; -} - -static int omap_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) -{ - struct omap_ep *ep = container_of(_ep, struct omap_ep, ep); - struct omap_req *req; - unsigned long flags; - - if (!_ep || !_req) - return -EINVAL; - - spin_lock_irqsave(&ep->udc->lock, flags); - - /* make sure it's actually queued on this endpoint */ - list_for_each_entry(req, &ep->queue, queue) { - if (&req->req == _req) - break; - } - if (&req->req != _req) { - spin_unlock_irqrestore(&ep->udc->lock, flags); - return -EINVAL; - } - - if (use_dma && ep->dma_channel && ep->queue.next == &req->queue) { - int channel = ep->dma_channel; - - /* releasing the channel cancels the request, - * reclaiming the channel restarts the queue - */ - dma_channel_release(ep); - dma_channel_claim(ep, channel); - } else - done(ep, req, -ECONNRESET); - spin_unlock_irqrestore(&ep->udc->lock, flags); - return 0; -} - -/*-------------------------------------------------------------------------*/ - -static int omap_ep_set_halt(struct usb_ep *_ep, int value) -{ - struct omap_ep *ep = container_of(_ep, struct omap_ep, ep); - unsigned long flags; - int status = -EOPNOTSUPP; - - spin_lock_irqsave(&ep->udc->lock, flags); - - /* just use protocol stalls for ep0; real halts are annoying */ - if (ep->bEndpointAddress == 0) { - if (!ep->udc->ep0_pending) - status = -EINVAL; - else if (value) { - if (ep->udc->ep0_set_config) { - WARNING("error changing config?\n"); - omap_writew(UDC_CLR_CFG, UDC_SYSCON2); - } - omap_writew(UDC_STALL_CMD, UDC_SYSCON2); - ep->udc->ep0_pending = 0; - status = 0; - } else /* NOP */ - status = 0; - - /* otherwise, all active non-ISO endpoints can halt */ - } else if (ep->bmAttributes != USB_ENDPOINT_XFER_ISOC && ep->ep.desc) { - - /* IN endpoints must already be idle */ - if ((ep->bEndpointAddress & USB_DIR_IN) - && !list_empty(&ep->queue)) { - status = -EAGAIN; - goto done; - } - - if (value) { - int channel; - - if (use_dma && ep->dma_channel - && !list_empty(&ep->queue)) { - channel = ep->dma_channel; - dma_channel_release(ep); - } else - channel = 0; - - use_ep(ep, UDC_EP_SEL); - if (omap_readw(UDC_STAT_FLG) & UDC_NON_ISO_FIFO_EMPTY) { - omap_writew(UDC_SET_HALT, UDC_CTRL); - status = 0; - } else - status = -EAGAIN; - deselect_ep(); - - if (channel) - dma_channel_claim(ep, channel); - } else { - use_ep(ep, 0); - omap_writew(ep->udc->clr_halt, UDC_CTRL); - ep->ackwait = 0; - if (!(ep->bEndpointAddress & USB_DIR_IN)) { - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - ep->ackwait = 1 + ep->double_buf; - } - } - } -done: - VDBG("%s %s halt stat %d\n", ep->ep.name, - value ? "set" : "clear", status); - - spin_unlock_irqrestore(&ep->udc->lock, flags); - return status; -} - -static struct usb_ep_ops omap_ep_ops = { - .enable = omap_ep_enable, - .disable = omap_ep_disable, - - .alloc_request = omap_alloc_request, - .free_request = omap_free_request, - - .queue = omap_ep_queue, - .dequeue = omap_ep_dequeue, - - .set_halt = omap_ep_set_halt, - /* fifo_status ... report bytes in fifo */ - /* fifo_flush ... flush fifo */ -}; - -/*-------------------------------------------------------------------------*/ - -static int omap_get_frame(struct usb_gadget *gadget) -{ - u16 sof = omap_readw(UDC_SOF); - return (sof & UDC_TS_OK) ? (sof & UDC_TS) : -EL2NSYNC; -} - -static int omap_wakeup(struct usb_gadget *gadget) -{ - struct omap_udc *udc; - unsigned long flags; - int retval = -EHOSTUNREACH; - - udc = container_of(gadget, struct omap_udc, gadget); - - spin_lock_irqsave(&udc->lock, flags); - if (udc->devstat & UDC_SUS) { - /* NOTE: OTG spec erratum says that OTG devices may - * issue wakeups without host enable. - */ - if (udc->devstat & (UDC_B_HNP_ENABLE|UDC_R_WK_OK)) { - DBG("remote wakeup...\n"); - omap_writew(UDC_RMT_WKP, UDC_SYSCON2); - retval = 0; - } - - /* NOTE: non-OTG systems may use SRP TOO... */ - } else if (!(udc->devstat & UDC_ATT)) { - if (!IS_ERR_OR_NULL(udc->transceiver)) - retval = otg_start_srp(udc->transceiver->otg); - } - spin_unlock_irqrestore(&udc->lock, flags); - - return retval; -} - -static int -omap_set_selfpowered(struct usb_gadget *gadget, int is_selfpowered) -{ - struct omap_udc *udc; - unsigned long flags; - u16 syscon1; - - udc = container_of(gadget, struct omap_udc, gadget); - spin_lock_irqsave(&udc->lock, flags); - syscon1 = omap_readw(UDC_SYSCON1); - if (is_selfpowered) - syscon1 |= UDC_SELF_PWR; - else - syscon1 &= ~UDC_SELF_PWR; - omap_writew(syscon1, UDC_SYSCON1); - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; -} - -static int can_pullup(struct omap_udc *udc) -{ - return udc->driver && udc->softconnect && udc->vbus_active; -} - -static void pullup_enable(struct omap_udc *udc) -{ - u16 w; - - w = omap_readw(UDC_SYSCON1); - w |= UDC_PULLUP_EN; - omap_writew(w, UDC_SYSCON1); - if (!gadget_is_otg(&udc->gadget) && !cpu_is_omap15xx()) { - u32 l; - - l = omap_readl(OTG_CTRL); - l |= OTG_BSESSVLD; - omap_writel(l, OTG_CTRL); - } - omap_writew(UDC_DS_CHG_IE, UDC_IRQ_EN); -} - -static void pullup_disable(struct omap_udc *udc) -{ - u16 w; - - if (!gadget_is_otg(&udc->gadget) && !cpu_is_omap15xx()) { - u32 l; - - l = omap_readl(OTG_CTRL); - l &= ~OTG_BSESSVLD; - omap_writel(l, OTG_CTRL); - } - omap_writew(UDC_DS_CHG_IE, UDC_IRQ_EN); - w = omap_readw(UDC_SYSCON1); - w &= ~UDC_PULLUP_EN; - omap_writew(w, UDC_SYSCON1); -} - -static struct omap_udc *udc; - -static void omap_udc_enable_clock(int enable) -{ - if (udc == NULL || udc->dc_clk == NULL || udc->hhc_clk == NULL) - return; - - if (enable) { - clk_enable(udc->dc_clk); - clk_enable(udc->hhc_clk); - udelay(100); - } else { - clk_disable(udc->hhc_clk); - clk_disable(udc->dc_clk); - } -} - -/* - * Called by whatever detects VBUS sessions: external transceiver - * driver, or maybe GPIO0 VBUS IRQ. May request 48 MHz clock. - */ -static int omap_vbus_session(struct usb_gadget *gadget, int is_active) -{ - struct omap_udc *udc; - unsigned long flags; - u32 l; - - udc = container_of(gadget, struct omap_udc, gadget); - spin_lock_irqsave(&udc->lock, flags); - VDBG("VBUS %s\n", is_active ? "on" : "off"); - udc->vbus_active = (is_active != 0); - if (cpu_is_omap15xx()) { - /* "software" detect, ignored if !VBUS_MODE_1510 */ - l = omap_readl(FUNC_MUX_CTRL_0); - if (is_active) - l |= VBUS_CTRL_1510; - else - l &= ~VBUS_CTRL_1510; - omap_writel(l, FUNC_MUX_CTRL_0); - } - if (udc->dc_clk != NULL && is_active) { - if (!udc->clk_requested) { - omap_udc_enable_clock(1); - udc->clk_requested = 1; - } - } - if (can_pullup(udc)) - pullup_enable(udc); - else - pullup_disable(udc); - if (udc->dc_clk != NULL && !is_active) { - if (udc->clk_requested) { - omap_udc_enable_clock(0); - udc->clk_requested = 0; - } - } - spin_unlock_irqrestore(&udc->lock, flags); - return 0; -} - -static int omap_vbus_draw(struct usb_gadget *gadget, unsigned mA) -{ - struct omap_udc *udc; - - udc = container_of(gadget, struct omap_udc, gadget); - if (!IS_ERR_OR_NULL(udc->transceiver)) - return usb_phy_set_power(udc->transceiver, mA); - return -EOPNOTSUPP; -} - -static int omap_pullup(struct usb_gadget *gadget, int is_on) -{ - struct omap_udc *udc; - unsigned long flags; - - udc = container_of(gadget, struct omap_udc, gadget); - spin_lock_irqsave(&udc->lock, flags); - udc->softconnect = (is_on != 0); - if (can_pullup(udc)) - pullup_enable(udc); - else - pullup_disable(udc); - spin_unlock_irqrestore(&udc->lock, flags); - return 0; -} - -static int omap_udc_start(struct usb_gadget *g, - struct usb_gadget_driver *driver); -static int omap_udc_stop(struct usb_gadget *g, - struct usb_gadget_driver *driver); - -static const struct usb_gadget_ops omap_gadget_ops = { - .get_frame = omap_get_frame, - .wakeup = omap_wakeup, - .set_selfpowered = omap_set_selfpowered, - .vbus_session = omap_vbus_session, - .vbus_draw = omap_vbus_draw, - .pullup = omap_pullup, - .udc_start = omap_udc_start, - .udc_stop = omap_udc_stop, -}; - -/*-------------------------------------------------------------------------*/ - -/* dequeue ALL requests; caller holds udc->lock */ -static void nuke(struct omap_ep *ep, int status) -{ - struct omap_req *req; - - ep->stopped = 1; - - if (use_dma && ep->dma_channel) - dma_channel_release(ep); - - use_ep(ep, 0); - omap_writew(UDC_CLR_EP, UDC_CTRL); - if (ep->bEndpointAddress && ep->bmAttributes != USB_ENDPOINT_XFER_ISOC) - omap_writew(UDC_SET_HALT, UDC_CTRL); - - while (!list_empty(&ep->queue)) { - req = list_entry(ep->queue.next, struct omap_req, queue); - done(ep, req, status); - } -} - -/* caller holds udc->lock */ -static void udc_quiesce(struct omap_udc *udc) -{ - struct omap_ep *ep; - - udc->gadget.speed = USB_SPEED_UNKNOWN; - nuke(&udc->ep[0], -ESHUTDOWN); - list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) - nuke(ep, -ESHUTDOWN); -} - -/*-------------------------------------------------------------------------*/ - -static void update_otg(struct omap_udc *udc) -{ - u16 devstat; - - if (!gadget_is_otg(&udc->gadget)) - return; - - if (omap_readl(OTG_CTRL) & OTG_ID) - devstat = omap_readw(UDC_DEVSTAT); - else - devstat = 0; - - udc->gadget.b_hnp_enable = !!(devstat & UDC_B_HNP_ENABLE); - udc->gadget.a_hnp_support = !!(devstat & UDC_A_HNP_SUPPORT); - udc->gadget.a_alt_hnp_support = !!(devstat & UDC_A_ALT_HNP_SUPPORT); - - /* Enable HNP early, avoiding races on suspend irq path. - * ASSUMES OTG state machine B_BUS_REQ input is true. - */ - if (udc->gadget.b_hnp_enable) { - u32 l; - - l = omap_readl(OTG_CTRL); - l |= OTG_B_HNPEN | OTG_B_BUSREQ; - l &= ~OTG_PULLUP; - omap_writel(l, OTG_CTRL); - } -} - -static void ep0_irq(struct omap_udc *udc, u16 irq_src) -{ - struct omap_ep *ep0 = &udc->ep[0]; - struct omap_req *req = NULL; - - ep0->irqs++; - - /* Clear any pending requests and then scrub any rx/tx state - * before starting to handle the SETUP request. - */ - if (irq_src & UDC_SETUP) { - u16 ack = irq_src & (UDC_EP0_TX|UDC_EP0_RX); - - nuke(ep0, 0); - if (ack) { - omap_writew(ack, UDC_IRQ_SRC); - irq_src = UDC_SETUP; - } - } - - /* IN/OUT packets mean we're in the DATA or STATUS stage. - * This driver uses only uses protocol stalls (ep0 never halts), - * and if we got this far the gadget driver already had a - * chance to stall. Tries to be forgiving of host oddities. - * - * NOTE: the last chance gadget drivers have to stall control - * requests is during their request completion callback. - */ - if (!list_empty(&ep0->queue)) - req = container_of(ep0->queue.next, struct omap_req, queue); - - /* IN == TX to host */ - if (irq_src & UDC_EP0_TX) { - int stat; - - omap_writew(UDC_EP0_TX, UDC_IRQ_SRC); - omap_writew(UDC_EP_SEL|UDC_EP_DIR, UDC_EP_NUM); - stat = omap_readw(UDC_STAT_FLG); - if (stat & UDC_ACK) { - if (udc->ep0_in) { - /* write next IN packet from response, - * or set up the status stage. - */ - if (req) - stat = write_fifo(ep0, req); - omap_writew(UDC_EP_DIR, UDC_EP_NUM); - if (!req && udc->ep0_pending) { - omap_writew(UDC_EP_SEL, UDC_EP_NUM); - omap_writew(UDC_CLR_EP, UDC_CTRL); - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - omap_writew(0, UDC_EP_NUM); - udc->ep0_pending = 0; - } /* else: 6 wait states before it'll tx */ - } else { - /* ack status stage of OUT transfer */ - omap_writew(UDC_EP_DIR, UDC_EP_NUM); - if (req) - done(ep0, req, 0); - } - req = NULL; - } else if (stat & UDC_STALL) { - omap_writew(UDC_CLR_HALT, UDC_CTRL); - omap_writew(UDC_EP_DIR, UDC_EP_NUM); - } else { - omap_writew(UDC_EP_DIR, UDC_EP_NUM); - } - } - - /* OUT == RX from host */ - if (irq_src & UDC_EP0_RX) { - int stat; - - omap_writew(UDC_EP0_RX, UDC_IRQ_SRC); - omap_writew(UDC_EP_SEL, UDC_EP_NUM); - stat = omap_readw(UDC_STAT_FLG); - if (stat & UDC_ACK) { - if (!udc->ep0_in) { - stat = 0; - /* read next OUT packet of request, maybe - * reactiviting the fifo; stall on errors. - */ - stat = read_fifo(ep0, req); - if (!req || stat < 0) { - omap_writew(UDC_STALL_CMD, UDC_SYSCON2); - udc->ep0_pending = 0; - stat = 0; - } else if (stat == 0) - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - omap_writew(0, UDC_EP_NUM); - - /* activate status stage */ - if (stat == 1) { - done(ep0, req, 0); - /* that may have STALLed ep0... */ - omap_writew(UDC_EP_SEL | UDC_EP_DIR, - UDC_EP_NUM); - omap_writew(UDC_CLR_EP, UDC_CTRL); - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - omap_writew(UDC_EP_DIR, UDC_EP_NUM); - udc->ep0_pending = 0; - } - } else { - /* ack status stage of IN transfer */ - omap_writew(0, UDC_EP_NUM); - if (req) - done(ep0, req, 0); - } - } else if (stat & UDC_STALL) { - omap_writew(UDC_CLR_HALT, UDC_CTRL); - omap_writew(0, UDC_EP_NUM); - } else { - omap_writew(0, UDC_EP_NUM); - } - } - - /* SETUP starts all control transfers */ - if (irq_src & UDC_SETUP) { - union u { - u16 word[4]; - struct usb_ctrlrequest r; - } u; - int status = -EINVAL; - struct omap_ep *ep; - - /* read the (latest) SETUP message */ - do { - omap_writew(UDC_SETUP_SEL, UDC_EP_NUM); - /* two bytes at a time */ - u.word[0] = omap_readw(UDC_DATA); - u.word[1] = omap_readw(UDC_DATA); - u.word[2] = omap_readw(UDC_DATA); - u.word[3] = omap_readw(UDC_DATA); - omap_writew(0, UDC_EP_NUM); - } while (omap_readw(UDC_IRQ_SRC) & UDC_SETUP); - -#define w_value le16_to_cpu(u.r.wValue) -#define w_index le16_to_cpu(u.r.wIndex) -#define w_length le16_to_cpu(u.r.wLength) - - /* Delegate almost all control requests to the gadget driver, - * except for a handful of ch9 status/feature requests that - * hardware doesn't autodecode _and_ the gadget API hides. - */ - udc->ep0_in = (u.r.bRequestType & USB_DIR_IN) != 0; - udc->ep0_set_config = 0; - udc->ep0_pending = 1; - ep0->stopped = 0; - ep0->ackwait = 0; - switch (u.r.bRequest) { - case USB_REQ_SET_CONFIGURATION: - /* udc needs to know when ep != 0 is valid */ - if (u.r.bRequestType != USB_RECIP_DEVICE) - goto delegate; - if (w_length != 0) - goto do_stall; - udc->ep0_set_config = 1; - udc->ep0_reset_config = (w_value == 0); - VDBG("set config %d\n", w_value); - - /* update udc NOW since gadget driver may start - * queueing requests immediately; clear config - * later if it fails the request. - */ - if (udc->ep0_reset_config) - omap_writew(UDC_CLR_CFG, UDC_SYSCON2); - else - omap_writew(UDC_DEV_CFG, UDC_SYSCON2); - update_otg(udc); - goto delegate; - case USB_REQ_CLEAR_FEATURE: - /* clear endpoint halt */ - if (u.r.bRequestType != USB_RECIP_ENDPOINT) - goto delegate; - if (w_value != USB_ENDPOINT_HALT - || w_length != 0) - goto do_stall; - ep = &udc->ep[w_index & 0xf]; - if (ep != ep0) { - if (w_index & USB_DIR_IN) - ep += 16; - if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC - || !ep->ep.desc) - goto do_stall; - use_ep(ep, 0); - omap_writew(udc->clr_halt, UDC_CTRL); - ep->ackwait = 0; - if (!(ep->bEndpointAddress & USB_DIR_IN)) { - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - ep->ackwait = 1 + ep->double_buf; - } - /* NOTE: assumes the host behaves sanely, - * only clearing real halts. Else we may - * need to kill pending transfers and then - * restart the queue... very messy for DMA! - */ - } - VDBG("%s halt cleared by host\n", ep->name); - goto ep0out_status_stage; - case USB_REQ_SET_FEATURE: - /* set endpoint halt */ - if (u.r.bRequestType != USB_RECIP_ENDPOINT) - goto delegate; - if (w_value != USB_ENDPOINT_HALT - || w_length != 0) - goto do_stall; - ep = &udc->ep[w_index & 0xf]; - if (w_index & USB_DIR_IN) - ep += 16; - if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC - || ep == ep0 || !ep->ep.desc) - goto do_stall; - if (use_dma && ep->has_dma) { - /* this has rude side-effects (aborts) and - * can't really work if DMA-IN is active - */ - DBG("%s host set_halt, NYET\n", ep->name); - goto do_stall; - } - use_ep(ep, 0); - /* can't halt if fifo isn't empty... */ - omap_writew(UDC_CLR_EP, UDC_CTRL); - omap_writew(UDC_SET_HALT, UDC_CTRL); - VDBG("%s halted by host\n", ep->name); -ep0out_status_stage: - status = 0; - omap_writew(UDC_EP_SEL|UDC_EP_DIR, UDC_EP_NUM); - omap_writew(UDC_CLR_EP, UDC_CTRL); - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - omap_writew(UDC_EP_DIR, UDC_EP_NUM); - udc->ep0_pending = 0; - break; - case USB_REQ_GET_STATUS: - /* USB_ENDPOINT_HALT status? */ - if (u.r.bRequestType != (USB_DIR_IN|USB_RECIP_ENDPOINT)) - goto intf_status; - - /* ep0 never stalls */ - if (!(w_index & 0xf)) - goto zero_status; - - /* only active endpoints count */ - ep = &udc->ep[w_index & 0xf]; - if (w_index & USB_DIR_IN) - ep += 16; - if (!ep->ep.desc) - goto do_stall; - - /* iso never stalls */ - if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC) - goto zero_status; - - /* FIXME don't assume non-halted endpoints!! */ - ERR("%s status, can't report\n", ep->ep.name); - goto do_stall; - -intf_status: - /* return interface status. if we were pedantic, - * we'd detect non-existent interfaces, and stall. - */ - if (u.r.bRequestType - != (USB_DIR_IN|USB_RECIP_INTERFACE)) - goto delegate; - -zero_status: - /* return two zero bytes */ - omap_writew(UDC_EP_SEL|UDC_EP_DIR, UDC_EP_NUM); - omap_writew(0, UDC_DATA); - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - omap_writew(UDC_EP_DIR, UDC_EP_NUM); - status = 0; - VDBG("GET_STATUS, interface %d\n", w_index); - /* next, status stage */ - break; - default: -delegate: - /* activate the ep0out fifo right away */ - if (!udc->ep0_in && w_length) { - omap_writew(0, UDC_EP_NUM); - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - } - - /* gadget drivers see class/vendor specific requests, - * {SET,GET}_{INTERFACE,DESCRIPTOR,CONFIGURATION}, - * and more - */ - VDBG("SETUP %02x.%02x v%04x i%04x l%04x\n", - u.r.bRequestType, u.r.bRequest, - w_value, w_index, w_length); - -#undef w_value -#undef w_index -#undef w_length - - /* The gadget driver may return an error here, - * causing an immediate protocol stall. - * - * Else it must issue a response, either queueing a - * response buffer for the DATA stage, or halting ep0 - * (causing a protocol stall, not a real halt). A - * zero length buffer means no DATA stage. - * - * It's fine to issue that response after the setup() - * call returns, and this IRQ was handled. - */ - udc->ep0_setup = 1; - spin_unlock(&udc->lock); - status = udc->driver->setup(&udc->gadget, &u.r); - spin_lock(&udc->lock); - udc->ep0_setup = 0; - } - - if (status < 0) { -do_stall: - VDBG("req %02x.%02x protocol STALL; stat %d\n", - u.r.bRequestType, u.r.bRequest, status); - if (udc->ep0_set_config) { - if (udc->ep0_reset_config) - WARNING("error resetting config?\n"); - else - omap_writew(UDC_CLR_CFG, UDC_SYSCON2); - } - omap_writew(UDC_STALL_CMD, UDC_SYSCON2); - udc->ep0_pending = 0; - } - } -} - -/*-------------------------------------------------------------------------*/ - -#define OTG_FLAGS (UDC_B_HNP_ENABLE|UDC_A_HNP_SUPPORT|UDC_A_ALT_HNP_SUPPORT) - -static void devstate_irq(struct omap_udc *udc, u16 irq_src) -{ - u16 devstat, change; - - devstat = omap_readw(UDC_DEVSTAT); - change = devstat ^ udc->devstat; - udc->devstat = devstat; - - if (change & (UDC_USB_RESET|UDC_ATT)) { - udc_quiesce(udc); - - if (change & UDC_ATT) { - /* driver for any external transceiver will - * have called omap_vbus_session() already - */ - if (devstat & UDC_ATT) { - udc->gadget.speed = USB_SPEED_FULL; - VDBG("connect\n"); - if (IS_ERR_OR_NULL(udc->transceiver)) - pullup_enable(udc); - /* if (driver->connect) call it */ - } else if (udc->gadget.speed != USB_SPEED_UNKNOWN) { - udc->gadget.speed = USB_SPEED_UNKNOWN; - if (IS_ERR_OR_NULL(udc->transceiver)) - pullup_disable(udc); - DBG("disconnect, gadget %s\n", - udc->driver->driver.name); - if (udc->driver->disconnect) { - spin_unlock(&udc->lock); - udc->driver->disconnect(&udc->gadget); - spin_lock(&udc->lock); - } - } - change &= ~UDC_ATT; - } - - if (change & UDC_USB_RESET) { - if (devstat & UDC_USB_RESET) { - VDBG("RESET=1\n"); - } else { - udc->gadget.speed = USB_SPEED_FULL; - INFO("USB reset done, gadget %s\n", - udc->driver->driver.name); - /* ep0 traffic is legal from now on */ - omap_writew(UDC_DS_CHG_IE | UDC_EP0_IE, - UDC_IRQ_EN); - } - change &= ~UDC_USB_RESET; - } - } - if (change & UDC_SUS) { - if (udc->gadget.speed != USB_SPEED_UNKNOWN) { - /* FIXME tell isp1301 to suspend/resume (?) */ - if (devstat & UDC_SUS) { - VDBG("suspend\n"); - update_otg(udc); - /* HNP could be under way already */ - if (udc->gadget.speed == USB_SPEED_FULL - && udc->driver->suspend) { - spin_unlock(&udc->lock); - udc->driver->suspend(&udc->gadget); - spin_lock(&udc->lock); - } - if (!IS_ERR_OR_NULL(udc->transceiver)) - usb_phy_set_suspend( - udc->transceiver, 1); - } else { - VDBG("resume\n"); - if (!IS_ERR_OR_NULL(udc->transceiver)) - usb_phy_set_suspend( - udc->transceiver, 0); - if (udc->gadget.speed == USB_SPEED_FULL - && udc->driver->resume) { - spin_unlock(&udc->lock); - udc->driver->resume(&udc->gadget); - spin_lock(&udc->lock); - } - } - } - change &= ~UDC_SUS; - } - if (!cpu_is_omap15xx() && (change & OTG_FLAGS)) { - update_otg(udc); - change &= ~OTG_FLAGS; - } - - change &= ~(UDC_CFG|UDC_DEF|UDC_ADD); - if (change) - VDBG("devstat %03x, ignore change %03x\n", - devstat, change); - - omap_writew(UDC_DS_CHG, UDC_IRQ_SRC); -} - -static irqreturn_t omap_udc_irq(int irq, void *_udc) -{ - struct omap_udc *udc = _udc; - u16 irq_src; - irqreturn_t status = IRQ_NONE; - unsigned long flags; - - spin_lock_irqsave(&udc->lock, flags); - irq_src = omap_readw(UDC_IRQ_SRC); - - /* Device state change (usb ch9 stuff) */ - if (irq_src & UDC_DS_CHG) { - devstate_irq(_udc, irq_src); - status = IRQ_HANDLED; - irq_src &= ~UDC_DS_CHG; - } - - /* EP0 control transfers */ - if (irq_src & (UDC_EP0_RX|UDC_SETUP|UDC_EP0_TX)) { - ep0_irq(_udc, irq_src); - status = IRQ_HANDLED; - irq_src &= ~(UDC_EP0_RX|UDC_SETUP|UDC_EP0_TX); - } - - /* DMA transfer completion */ - if (use_dma && (irq_src & (UDC_TXN_DONE|UDC_RXN_CNT|UDC_RXN_EOT))) { - dma_irq(_udc, irq_src); - status = IRQ_HANDLED; - irq_src &= ~(UDC_TXN_DONE|UDC_RXN_CNT|UDC_RXN_EOT); - } - - irq_src &= ~(UDC_IRQ_SOF | UDC_EPN_TX|UDC_EPN_RX); - if (irq_src) - DBG("udc_irq, unhandled %03x\n", irq_src); - spin_unlock_irqrestore(&udc->lock, flags); - - return status; -} - -/* workaround for seemingly-lost IRQs for RX ACKs... */ -#define PIO_OUT_TIMEOUT (jiffies + HZ/3) -#define HALF_FULL(f) (!((f)&(UDC_NON_ISO_FIFO_FULL|UDC_NON_ISO_FIFO_EMPTY))) - -static void pio_out_timer(unsigned long _ep) -{ - struct omap_ep *ep = (void *) _ep; - unsigned long flags; - u16 stat_flg; - - spin_lock_irqsave(&ep->udc->lock, flags); - if (!list_empty(&ep->queue) && ep->ackwait) { - use_ep(ep, UDC_EP_SEL); - stat_flg = omap_readw(UDC_STAT_FLG); - - if ((stat_flg & UDC_ACK) && (!(stat_flg & UDC_FIFO_EN) - || (ep->double_buf && HALF_FULL(stat_flg)))) { - struct omap_req *req; - - VDBG("%s: lose, %04x\n", ep->ep.name, stat_flg); - req = container_of(ep->queue.next, - struct omap_req, queue); - (void) read_fifo(ep, req); - omap_writew(ep->bEndpointAddress, UDC_EP_NUM); - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - ep->ackwait = 1 + ep->double_buf; - } else - deselect_ep(); - } - mod_timer(&ep->timer, PIO_OUT_TIMEOUT); - spin_unlock_irqrestore(&ep->udc->lock, flags); -} - -static irqreturn_t omap_udc_pio_irq(int irq, void *_dev) -{ - u16 epn_stat, irq_src; - irqreturn_t status = IRQ_NONE; - struct omap_ep *ep; - int epnum; - struct omap_udc *udc = _dev; - struct omap_req *req; - unsigned long flags; - - spin_lock_irqsave(&udc->lock, flags); - epn_stat = omap_readw(UDC_EPN_STAT); - irq_src = omap_readw(UDC_IRQ_SRC); - - /* handle OUT first, to avoid some wasteful NAKs */ - if (irq_src & UDC_EPN_RX) { - epnum = (epn_stat >> 8) & 0x0f; - omap_writew(UDC_EPN_RX, UDC_IRQ_SRC); - status = IRQ_HANDLED; - ep = &udc->ep[epnum]; - ep->irqs++; - - omap_writew(epnum | UDC_EP_SEL, UDC_EP_NUM); - ep->fnf = 0; - if (omap_readw(UDC_STAT_FLG) & UDC_ACK) { - ep->ackwait--; - if (!list_empty(&ep->queue)) { - int stat; - req = container_of(ep->queue.next, - struct omap_req, queue); - stat = read_fifo(ep, req); - if (!ep->double_buf) - ep->fnf = 1; - } - } - /* min 6 clock delay before clearing EP_SEL ... */ - epn_stat = omap_readw(UDC_EPN_STAT); - epn_stat = omap_readw(UDC_EPN_STAT); - omap_writew(epnum, UDC_EP_NUM); - - /* enabling fifo _after_ clearing ACK, contrary to docs, - * reduces lossage; timer still needed though (sigh). - */ - if (ep->fnf) { - omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); - ep->ackwait = 1 + ep->double_buf; - } - mod_timer(&ep->timer, PIO_OUT_TIMEOUT); - } - - /* then IN transfers */ - else if (irq_src & UDC_EPN_TX) { - epnum = epn_stat & 0x0f; - omap_writew(UDC_EPN_TX, UDC_IRQ_SRC); - status = IRQ_HANDLED; - ep = &udc->ep[16 + epnum]; - ep->irqs++; - - omap_writew(epnum | UDC_EP_DIR | UDC_EP_SEL, UDC_EP_NUM); - if (omap_readw(UDC_STAT_FLG) & UDC_ACK) { - ep->ackwait = 0; - if (!list_empty(&ep->queue)) { - req = container_of(ep->queue.next, - struct omap_req, queue); - (void) write_fifo(ep, req); - } - } - /* min 6 clock delay before clearing EP_SEL ... */ - epn_stat = omap_readw(UDC_EPN_STAT); - epn_stat = omap_readw(UDC_EPN_STAT); - omap_writew(epnum | UDC_EP_DIR, UDC_EP_NUM); - /* then 6 clocks before it'd tx */ - } - - spin_unlock_irqrestore(&udc->lock, flags); - return status; -} - -#ifdef USE_ISO -static irqreturn_t omap_udc_iso_irq(int irq, void *_dev) -{ - struct omap_udc *udc = _dev; - struct omap_ep *ep; - int pending = 0; - unsigned long flags; - - spin_lock_irqsave(&udc->lock, flags); - - /* handle all non-DMA ISO transfers */ - list_for_each_entry(ep, &udc->iso, iso) { - u16 stat; - struct omap_req *req; - - if (ep->has_dma || list_empty(&ep->queue)) - continue; - req = list_entry(ep->queue.next, struct omap_req, queue); - - use_ep(ep, UDC_EP_SEL); - stat = omap_readw(UDC_STAT_FLG); - - /* NOTE: like the other controller drivers, this isn't - * currently reporting lost or damaged frames. - */ - if (ep->bEndpointAddress & USB_DIR_IN) { - if (stat & UDC_MISS_IN) - /* done(ep, req, -EPROTO) */; - else - write_fifo(ep, req); - } else { - int status = 0; - - if (stat & UDC_NO_RXPACKET) - status = -EREMOTEIO; - else if (stat & UDC_ISO_ERR) - status = -EILSEQ; - else if (stat & UDC_DATA_FLUSH) - status = -ENOSR; - - if (status) - /* done(ep, req, status) */; - else - read_fifo(ep, req); - } - deselect_ep(); - /* 6 wait states before next EP */ - - ep->irqs++; - if (!list_empty(&ep->queue)) - pending = 1; - } - if (!pending) { - u16 w; - - w = omap_readw(UDC_IRQ_EN); - w &= ~UDC_SOF_IE; - omap_writew(w, UDC_IRQ_EN); - } - omap_writew(UDC_IRQ_SOF, UDC_IRQ_SRC); - - spin_unlock_irqrestore(&udc->lock, flags); - return IRQ_HANDLED; -} -#endif - -/*-------------------------------------------------------------------------*/ - -static inline int machine_without_vbus_sense(void) -{ - return machine_is_omap_innovator() - || machine_is_omap_osk() - || machine_is_sx1() - /* No known omap7xx boards with vbus sense */ - || cpu_is_omap7xx(); -} - -static int omap_udc_start(struct usb_gadget *g, - struct usb_gadget_driver *driver) -{ - int status = -ENODEV; - struct omap_ep *ep; - unsigned long flags; - - - spin_lock_irqsave(&udc->lock, flags); - /* reset state */ - list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { - ep->irqs = 0; - if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC) - continue; - use_ep(ep, 0); - omap_writew(UDC_SET_HALT, UDC_CTRL); - } - udc->ep0_pending = 0; - udc->ep[0].irqs = 0; - udc->softconnect = 1; - - /* hook up the driver */ - driver->driver.bus = NULL; - udc->driver = driver; - spin_unlock_irqrestore(&udc->lock, flags); - - if (udc->dc_clk != NULL) - omap_udc_enable_clock(1); - - omap_writew(UDC_IRQ_SRC_MASK, UDC_IRQ_SRC); - - /* connect to bus through transceiver */ - if (!IS_ERR_OR_NULL(udc->transceiver)) { - status = otg_set_peripheral(udc->transceiver->otg, - &udc->gadget); - if (status < 0) { - ERR("can't bind to transceiver\n"); - udc->driver = NULL; - goto done; - } - } else { - if (can_pullup(udc)) - pullup_enable(udc); - else - pullup_disable(udc); - } - - /* boards that don't have VBUS sensing can't autogate 48MHz; - * can't enter deep sleep while a gadget driver is active. - */ - if (machine_without_vbus_sense()) - omap_vbus_session(&udc->gadget, 1); - -done: - if (udc->dc_clk != NULL) - omap_udc_enable_clock(0); - - return status; -} - -static int omap_udc_stop(struct usb_gadget *g, - struct usb_gadget_driver *driver) -{ - unsigned long flags; - int status = -ENODEV; - - if (udc->dc_clk != NULL) - omap_udc_enable_clock(1); - - if (machine_without_vbus_sense()) - omap_vbus_session(&udc->gadget, 0); - - if (!IS_ERR_OR_NULL(udc->transceiver)) - (void) otg_set_peripheral(udc->transceiver->otg, NULL); - else - pullup_disable(udc); - - spin_lock_irqsave(&udc->lock, flags); - udc_quiesce(udc); - spin_unlock_irqrestore(&udc->lock, flags); - - udc->driver = NULL; - - if (udc->dc_clk != NULL) - omap_udc_enable_clock(0); - - return status; -} - -/*-------------------------------------------------------------------------*/ - -#ifdef CONFIG_USB_GADGET_DEBUG_FILES - -#include - -static const char proc_filename[] = "driver/udc"; - -#define FOURBITS "%s%s%s%s" -#define EIGHTBITS "%s%s%s%s%s%s%s%s" - -static void proc_ep_show(struct seq_file *s, struct omap_ep *ep) -{ - u16 stat_flg; - struct omap_req *req; - char buf[20]; - - use_ep(ep, 0); - - if (use_dma && ep->has_dma) - snprintf(buf, sizeof buf, "(%cxdma%d lch%d) ", - (ep->bEndpointAddress & USB_DIR_IN) ? 't' : 'r', - ep->dma_channel - 1, ep->lch); - else - buf[0] = 0; - - stat_flg = omap_readw(UDC_STAT_FLG); - seq_printf(s, - "\n%s %s%s%sirqs %ld stat %04x " EIGHTBITS FOURBITS "%s\n", - ep->name, buf, - ep->double_buf ? "dbuf " : "", - ({ char *s; - switch (ep->ackwait) { - case 0: - s = ""; - break; - case 1: - s = "(ackw) "; - break; - case 2: - s = "(ackw2) "; - break; - default: - s = "(?) "; - break; - } s; }), - ep->irqs, stat_flg, - (stat_flg & UDC_NO_RXPACKET) ? "no_rxpacket " : "", - (stat_flg & UDC_MISS_IN) ? "miss_in " : "", - (stat_flg & UDC_DATA_FLUSH) ? "data_flush " : "", - (stat_flg & UDC_ISO_ERR) ? "iso_err " : "", - (stat_flg & UDC_ISO_FIFO_EMPTY) ? "iso_fifo_empty " : "", - (stat_flg & UDC_ISO_FIFO_FULL) ? "iso_fifo_full " : "", - (stat_flg & UDC_EP_HALTED) ? "HALT " : "", - (stat_flg & UDC_STALL) ? "STALL " : "", - (stat_flg & UDC_NAK) ? "NAK " : "", - (stat_flg & UDC_ACK) ? "ACK " : "", - (stat_flg & UDC_FIFO_EN) ? "fifo_en " : "", - (stat_flg & UDC_NON_ISO_FIFO_EMPTY) ? "fifo_empty " : "", - (stat_flg & UDC_NON_ISO_FIFO_FULL) ? "fifo_full " : ""); - - if (list_empty(&ep->queue)) - seq_printf(s, "\t(queue empty)\n"); - else - list_for_each_entry(req, &ep->queue, queue) { - unsigned length = req->req.actual; - - if (use_dma && buf[0]) { - length += ((ep->bEndpointAddress & USB_DIR_IN) - ? dma_src_len : dma_dest_len) - (ep, req->req.dma + length); - buf[0] = 0; - } - seq_printf(s, "\treq %p len %d/%d buf %p\n", - &req->req, length, - req->req.length, req->req.buf); - } -} - -static char *trx_mode(unsigned m, int enabled) -{ - switch (m) { - case 0: - return enabled ? "*6wire" : "unused"; - case 1: - return "4wire"; - case 2: - return "3wire"; - case 3: - return "6wire"; - default: - return "unknown"; - } -} - -static int proc_otg_show(struct seq_file *s) -{ - u32 tmp; - u32 trans = 0; - char *ctrl_name = "(UNKNOWN)"; - - tmp = omap_readl(OTG_REV); - ctrl_name = "tranceiver_ctrl"; - trans = omap_readw(USB_TRANSCEIVER_CTRL); - seq_printf(s, "\nOTG rev %d.%d, %s %05x\n", - tmp >> 4, tmp & 0xf, ctrl_name, trans); - tmp = omap_readw(OTG_SYSCON_1); - seq_printf(s, "otg_syscon1 %08x usb2 %s, usb1 %s, usb0 %s," - FOURBITS "\n", tmp, - trx_mode(USB2_TRX_MODE(tmp), trans & CONF_USB2_UNI_R), - trx_mode(USB1_TRX_MODE(tmp), trans & CONF_USB1_UNI_R), - (USB0_TRX_MODE(tmp) == 0 && !cpu_is_omap1710()) - ? "internal" - : trx_mode(USB0_TRX_MODE(tmp), 1), - (tmp & OTG_IDLE_EN) ? " !otg" : "", - (tmp & HST_IDLE_EN) ? " !host" : "", - (tmp & DEV_IDLE_EN) ? " !dev" : "", - (tmp & OTG_RESET_DONE) ? " reset_done" : " reset_active"); - tmp = omap_readl(OTG_SYSCON_2); - seq_printf(s, "otg_syscon2 %08x%s" EIGHTBITS - " b_ase_brst=%d hmc=%d\n", tmp, - (tmp & OTG_EN) ? " otg_en" : "", - (tmp & USBX_SYNCHRO) ? " synchro" : "", - /* much more SRP stuff */ - (tmp & SRP_DATA) ? " srp_data" : "", - (tmp & SRP_VBUS) ? " srp_vbus" : "", - (tmp & OTG_PADEN) ? " otg_paden" : "", - (tmp & HMC_PADEN) ? " hmc_paden" : "", - (tmp & UHOST_EN) ? " uhost_en" : "", - (tmp & HMC_TLLSPEED) ? " tllspeed" : "", - (tmp & HMC_TLLATTACH) ? " tllattach" : "", - B_ASE_BRST(tmp), - OTG_HMC(tmp)); - tmp = omap_readl(OTG_CTRL); - seq_printf(s, "otg_ctrl %06x" EIGHTBITS EIGHTBITS "%s\n", tmp, - (tmp & OTG_ASESSVLD) ? " asess" : "", - (tmp & OTG_BSESSEND) ? " bsess_end" : "", - (tmp & OTG_BSESSVLD) ? " bsess" : "", - (tmp & OTG_VBUSVLD) ? " vbus" : "", - (tmp & OTG_ID) ? " id" : "", - (tmp & OTG_DRIVER_SEL) ? " DEVICE" : " HOST", - (tmp & OTG_A_SETB_HNPEN) ? " a_setb_hnpen" : "", - (tmp & OTG_A_BUSREQ) ? " a_bus" : "", - (tmp & OTG_B_HNPEN) ? " b_hnpen" : "", - (tmp & OTG_B_BUSREQ) ? " b_bus" : "", - (tmp & OTG_BUSDROP) ? " busdrop" : "", - (tmp & OTG_PULLDOWN) ? " down" : "", - (tmp & OTG_PULLUP) ? " up" : "", - (tmp & OTG_DRV_VBUS) ? " drv" : "", - (tmp & OTG_PD_VBUS) ? " pd_vb" : "", - (tmp & OTG_PU_VBUS) ? " pu_vb" : "", - (tmp & OTG_PU_ID) ? " pu_id" : "" - ); - tmp = omap_readw(OTG_IRQ_EN); - seq_printf(s, "otg_irq_en %04x" "\n", tmp); - tmp = omap_readw(OTG_IRQ_SRC); - seq_printf(s, "otg_irq_src %04x" "\n", tmp); - tmp = omap_readw(OTG_OUTCTRL); - seq_printf(s, "otg_outctrl %04x" "\n", tmp); - tmp = omap_readw(OTG_TEST); - seq_printf(s, "otg_test %04x" "\n", tmp); - return 0; -} - -static int proc_udc_show(struct seq_file *s, void *_) -{ - u32 tmp; - struct omap_ep *ep; - unsigned long flags; - - spin_lock_irqsave(&udc->lock, flags); - - seq_printf(s, "%s, version: " DRIVER_VERSION -#ifdef USE_ISO - " (iso)" -#endif - "%s\n", - driver_desc, - use_dma ? " (dma)" : ""); - - tmp = omap_readw(UDC_REV) & 0xff; - seq_printf(s, - "UDC rev %d.%d, fifo mode %d, gadget %s\n" - "hmc %d, transceiver %s\n", - tmp >> 4, tmp & 0xf, - fifo_mode, - udc->driver ? udc->driver->driver.name : "(none)", - HMC, - udc->transceiver - ? udc->transceiver->label - : (cpu_is_omap1710() - ? "external" : "(none)")); - seq_printf(s, "ULPD control %04x req %04x status %04x\n", - omap_readw(ULPD_CLOCK_CTRL), - omap_readw(ULPD_SOFT_REQ), - omap_readw(ULPD_STATUS_REQ)); - - /* OTG controller registers */ - if (!cpu_is_omap15xx()) - proc_otg_show(s); - - tmp = omap_readw(UDC_SYSCON1); - seq_printf(s, "\nsyscon1 %04x" EIGHTBITS "\n", tmp, - (tmp & UDC_CFG_LOCK) ? " cfg_lock" : "", - (tmp & UDC_DATA_ENDIAN) ? " data_endian" : "", - (tmp & UDC_DMA_ENDIAN) ? " dma_endian" : "", - (tmp & UDC_NAK_EN) ? " nak" : "", - (tmp & UDC_AUTODECODE_DIS) ? " autodecode_dis" : "", - (tmp & UDC_SELF_PWR) ? " self_pwr" : "", - (tmp & UDC_SOFF_DIS) ? " soff_dis" : "", - (tmp & UDC_PULLUP_EN) ? " PULLUP" : ""); - /* syscon2 is write-only */ - - /* UDC controller registers */ - if (!(tmp & UDC_PULLUP_EN)) { - seq_printf(s, "(suspended)\n"); - spin_unlock_irqrestore(&udc->lock, flags); - return 0; - } - - tmp = omap_readw(UDC_DEVSTAT); - seq_printf(s, "devstat %04x" EIGHTBITS "%s%s\n", tmp, - (tmp & UDC_B_HNP_ENABLE) ? " b_hnp" : "", - (tmp & UDC_A_HNP_SUPPORT) ? " a_hnp" : "", - (tmp & UDC_A_ALT_HNP_SUPPORT) ? " a_alt_hnp" : "", - (tmp & UDC_R_WK_OK) ? " r_wk_ok" : "", - (tmp & UDC_USB_RESET) ? " usb_reset" : "", - (tmp & UDC_SUS) ? " SUS" : "", - (tmp & UDC_CFG) ? " CFG" : "", - (tmp & UDC_ADD) ? " ADD" : "", - (tmp & UDC_DEF) ? " DEF" : "", - (tmp & UDC_ATT) ? " ATT" : ""); - seq_printf(s, "sof %04x\n", omap_readw(UDC_SOF)); - tmp = omap_readw(UDC_IRQ_EN); - seq_printf(s, "irq_en %04x" FOURBITS "%s\n", tmp, - (tmp & UDC_SOF_IE) ? " sof" : "", - (tmp & UDC_EPN_RX_IE) ? " epn_rx" : "", - (tmp & UDC_EPN_TX_IE) ? " epn_tx" : "", - (tmp & UDC_DS_CHG_IE) ? " ds_chg" : "", - (tmp & UDC_EP0_IE) ? " ep0" : ""); - tmp = omap_readw(UDC_IRQ_SRC); - seq_printf(s, "irq_src %04x" EIGHTBITS "%s%s\n", tmp, - (tmp & UDC_TXN_DONE) ? " txn_done" : "", - (tmp & UDC_RXN_CNT) ? " rxn_cnt" : "", - (tmp & UDC_RXN_EOT) ? " rxn_eot" : "", - (tmp & UDC_IRQ_SOF) ? " sof" : "", - (tmp & UDC_EPN_RX) ? " epn_rx" : "", - (tmp & UDC_EPN_TX) ? " epn_tx" : "", - (tmp & UDC_DS_CHG) ? " ds_chg" : "", - (tmp & UDC_SETUP) ? " setup" : "", - (tmp & UDC_EP0_RX) ? " ep0out" : "", - (tmp & UDC_EP0_TX) ? " ep0in" : ""); - if (use_dma) { - unsigned i; - - tmp = omap_readw(UDC_DMA_IRQ_EN); - seq_printf(s, "dma_irq_en %04x%s" EIGHTBITS "\n", tmp, - (tmp & UDC_TX_DONE_IE(3)) ? " tx2_done" : "", - (tmp & UDC_RX_CNT_IE(3)) ? " rx2_cnt" : "", - (tmp & UDC_RX_EOT_IE(3)) ? " rx2_eot" : "", - - (tmp & UDC_TX_DONE_IE(2)) ? " tx1_done" : "", - (tmp & UDC_RX_CNT_IE(2)) ? " rx1_cnt" : "", - (tmp & UDC_RX_EOT_IE(2)) ? " rx1_eot" : "", - - (tmp & UDC_TX_DONE_IE(1)) ? " tx0_done" : "", - (tmp & UDC_RX_CNT_IE(1)) ? " rx0_cnt" : "", - (tmp & UDC_RX_EOT_IE(1)) ? " rx0_eot" : ""); - - tmp = omap_readw(UDC_RXDMA_CFG); - seq_printf(s, "rxdma_cfg %04x\n", tmp); - if (tmp) { - for (i = 0; i < 3; i++) { - if ((tmp & (0x0f << (i * 4))) == 0) - continue; - seq_printf(s, "rxdma[%d] %04x\n", i, - omap_readw(UDC_RXDMA(i + 1))); - } - } - tmp = omap_readw(UDC_TXDMA_CFG); - seq_printf(s, "txdma_cfg %04x\n", tmp); - if (tmp) { - for (i = 0; i < 3; i++) { - if (!(tmp & (0x0f << (i * 4)))) - continue; - seq_printf(s, "txdma[%d] %04x\n", i, - omap_readw(UDC_TXDMA(i + 1))); - } - } - } - - tmp = omap_readw(UDC_DEVSTAT); - if (tmp & UDC_ATT) { - proc_ep_show(s, &udc->ep[0]); - if (tmp & UDC_ADD) { - list_for_each_entry(ep, &udc->gadget.ep_list, - ep.ep_list) { - if (ep->ep.desc) - proc_ep_show(s, ep); - } - } - } - spin_unlock_irqrestore(&udc->lock, flags); - return 0; -} - -static int proc_udc_open(struct inode *inode, struct file *file) -{ - return single_open(file, proc_udc_show, NULL); -} - -static const struct file_operations proc_ops = { - .owner = THIS_MODULE, - .open = proc_udc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static void create_proc_file(void) -{ - proc_create(proc_filename, 0, NULL, &proc_ops); -} - -static void remove_proc_file(void) -{ - remove_proc_entry(proc_filename, NULL); -} - -#else - -static inline void create_proc_file(void) {} -static inline void remove_proc_file(void) {} - -#endif - -/*-------------------------------------------------------------------------*/ - -/* Before this controller can enumerate, we need to pick an endpoint - * configuration, or "fifo_mode" That involves allocating 2KB of packet - * buffer space among the endpoints we'll be operating. - * - * NOTE: as of OMAP 1710 ES2.0, writing a new endpoint config when - * UDC_SYSCON_1.CFG_LOCK is set can now work. We won't use that - * capability yet though. - */ -static unsigned -omap_ep_setup(char *name, u8 addr, u8 type, - unsigned buf, unsigned maxp, int dbuf) -{ - struct omap_ep *ep; - u16 epn_rxtx = 0; - - /* OUT endpoints first, then IN */ - ep = &udc->ep[addr & 0xf]; - if (addr & USB_DIR_IN) - ep += 16; - - /* in case of ep init table bugs */ - BUG_ON(ep->name[0]); - - /* chip setup ... bit values are same for IN, OUT */ - if (type == USB_ENDPOINT_XFER_ISOC) { - switch (maxp) { - case 8: - epn_rxtx = 0 << 12; - break; - case 16: - epn_rxtx = 1 << 12; - break; - case 32: - epn_rxtx = 2 << 12; - break; - case 64: - epn_rxtx = 3 << 12; - break; - case 128: - epn_rxtx = 4 << 12; - break; - case 256: - epn_rxtx = 5 << 12; - break; - case 512: - epn_rxtx = 6 << 12; - break; - default: - BUG(); - } - epn_rxtx |= UDC_EPN_RX_ISO; - dbuf = 1; - } else { - /* double-buffering "not supported" on 15xx, - * and ignored for PIO-IN on newer chips - * (for more reliable behavior) - */ - if (!use_dma || cpu_is_omap15xx()) - dbuf = 0; - - switch (maxp) { - case 8: - epn_rxtx = 0 << 12; - break; - case 16: - epn_rxtx = 1 << 12; - break; - case 32: - epn_rxtx = 2 << 12; - break; - case 64: - epn_rxtx = 3 << 12; - break; - default: - BUG(); - } - if (dbuf && addr) - epn_rxtx |= UDC_EPN_RX_DB; - init_timer(&ep->timer); - ep->timer.function = pio_out_timer; - ep->timer.data = (unsigned long) ep; - } - if (addr) - epn_rxtx |= UDC_EPN_RX_VALID; - BUG_ON(buf & 0x07); - epn_rxtx |= buf >> 3; - - DBG("%s addr %02x rxtx %04x maxp %d%s buf %d\n", - name, addr, epn_rxtx, maxp, dbuf ? "x2" : "", buf); - - if (addr & USB_DIR_IN) - omap_writew(epn_rxtx, UDC_EP_TX(addr & 0xf)); - else - omap_writew(epn_rxtx, UDC_EP_RX(addr)); - - /* next endpoint's buffer starts after this one's */ - buf += maxp; - if (dbuf) - buf += maxp; - BUG_ON(buf > 2048); - - /* set up driver data structures */ - BUG_ON(strlen(name) >= sizeof ep->name); - strlcpy(ep->name, name, sizeof ep->name); - INIT_LIST_HEAD(&ep->queue); - INIT_LIST_HEAD(&ep->iso); - ep->bEndpointAddress = addr; - ep->bmAttributes = type; - ep->double_buf = dbuf; - ep->udc = udc; - - ep->ep.name = ep->name; - ep->ep.ops = &omap_ep_ops; - ep->maxpacket = maxp; - usb_ep_set_maxpacket_limit(&ep->ep, ep->maxpacket); - list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); - - return buf; -} - -static void omap_udc_release(struct device *dev) -{ - complete(udc->done); - kfree(udc); - udc = NULL; -} - -static int -omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv) -{ - unsigned tmp, buf; - - /* abolish any previous hardware state */ - omap_writew(0, UDC_SYSCON1); - omap_writew(0, UDC_IRQ_EN); - omap_writew(UDC_IRQ_SRC_MASK, UDC_IRQ_SRC); - omap_writew(0, UDC_DMA_IRQ_EN); - omap_writew(0, UDC_RXDMA_CFG); - omap_writew(0, UDC_TXDMA_CFG); - - /* UDC_PULLUP_EN gates the chip clock */ - /* OTG_SYSCON_1 |= DEV_IDLE_EN; */ - - udc = kzalloc(sizeof(*udc), GFP_KERNEL); - if (!udc) - return -ENOMEM; - - spin_lock_init(&udc->lock); - - udc->gadget.ops = &omap_gadget_ops; - udc->gadget.ep0 = &udc->ep[0].ep; - INIT_LIST_HEAD(&udc->gadget.ep_list); - INIT_LIST_HEAD(&udc->iso); - udc->gadget.speed = USB_SPEED_UNKNOWN; - udc->gadget.max_speed = USB_SPEED_FULL; - udc->gadget.name = driver_name; - udc->transceiver = xceiv; - - /* ep0 is special; put it right after the SETUP buffer */ - buf = omap_ep_setup("ep0", 0, USB_ENDPOINT_XFER_CONTROL, - 8 /* after SETUP */, 64 /* maxpacket */, 0); - list_del_init(&udc->ep[0].ep.ep_list); - - /* initially disable all non-ep0 endpoints */ - for (tmp = 1; tmp < 15; tmp++) { - omap_writew(0, UDC_EP_RX(tmp)); - omap_writew(0, UDC_EP_TX(tmp)); - } - -#define OMAP_BULK_EP(name, addr) \ - buf = omap_ep_setup(name "-bulk", addr, \ - USB_ENDPOINT_XFER_BULK, buf, 64, 1); -#define OMAP_INT_EP(name, addr, maxp) \ - buf = omap_ep_setup(name "-int", addr, \ - USB_ENDPOINT_XFER_INT, buf, maxp, 0); -#define OMAP_ISO_EP(name, addr, maxp) \ - buf = omap_ep_setup(name "-iso", addr, \ - USB_ENDPOINT_XFER_ISOC, buf, maxp, 1); - - switch (fifo_mode) { - case 0: - OMAP_BULK_EP("ep1in", USB_DIR_IN | 1); - OMAP_BULK_EP("ep2out", USB_DIR_OUT | 2); - OMAP_INT_EP("ep3in", USB_DIR_IN | 3, 16); - break; - case 1: - OMAP_BULK_EP("ep1in", USB_DIR_IN | 1); - OMAP_BULK_EP("ep2out", USB_DIR_OUT | 2); - OMAP_INT_EP("ep9in", USB_DIR_IN | 9, 16); - - OMAP_BULK_EP("ep3in", USB_DIR_IN | 3); - OMAP_BULK_EP("ep4out", USB_DIR_OUT | 4); - OMAP_INT_EP("ep10in", USB_DIR_IN | 10, 16); - - OMAP_BULK_EP("ep5in", USB_DIR_IN | 5); - OMAP_BULK_EP("ep5out", USB_DIR_OUT | 5); - OMAP_INT_EP("ep11in", USB_DIR_IN | 11, 16); - - OMAP_BULK_EP("ep6in", USB_DIR_IN | 6); - OMAP_BULK_EP("ep6out", USB_DIR_OUT | 6); - OMAP_INT_EP("ep12in", USB_DIR_IN | 12, 16); - - OMAP_BULK_EP("ep7in", USB_DIR_IN | 7); - OMAP_BULK_EP("ep7out", USB_DIR_OUT | 7); - OMAP_INT_EP("ep13in", USB_DIR_IN | 13, 16); - OMAP_INT_EP("ep13out", USB_DIR_OUT | 13, 16); - - OMAP_BULK_EP("ep8in", USB_DIR_IN | 8); - OMAP_BULK_EP("ep8out", USB_DIR_OUT | 8); - OMAP_INT_EP("ep14in", USB_DIR_IN | 14, 16); - OMAP_INT_EP("ep14out", USB_DIR_OUT | 14, 16); - - OMAP_BULK_EP("ep15in", USB_DIR_IN | 15); - OMAP_BULK_EP("ep15out", USB_DIR_OUT | 15); - - break; - -#ifdef USE_ISO - case 2: /* mixed iso/bulk */ - OMAP_ISO_EP("ep1in", USB_DIR_IN | 1, 256); - OMAP_ISO_EP("ep2out", USB_DIR_OUT | 2, 256); - OMAP_ISO_EP("ep3in", USB_DIR_IN | 3, 128); - OMAP_ISO_EP("ep4out", USB_DIR_OUT | 4, 128); - - OMAP_INT_EP("ep5in", USB_DIR_IN | 5, 16); - - OMAP_BULK_EP("ep6in", USB_DIR_IN | 6); - OMAP_BULK_EP("ep7out", USB_DIR_OUT | 7); - OMAP_INT_EP("ep8in", USB_DIR_IN | 8, 16); - break; - case 3: /* mixed bulk/iso */ - OMAP_BULK_EP("ep1in", USB_DIR_IN | 1); - OMAP_BULK_EP("ep2out", USB_DIR_OUT | 2); - OMAP_INT_EP("ep3in", USB_DIR_IN | 3, 16); - - OMAP_BULK_EP("ep4in", USB_DIR_IN | 4); - OMAP_BULK_EP("ep5out", USB_DIR_OUT | 5); - OMAP_INT_EP("ep6in", USB_DIR_IN | 6, 16); - - OMAP_ISO_EP("ep7in", USB_DIR_IN | 7, 256); - OMAP_ISO_EP("ep8out", USB_DIR_OUT | 8, 256); - OMAP_INT_EP("ep9in", USB_DIR_IN | 9, 16); - break; -#endif - - /* add more modes as needed */ - - default: - ERR("unsupported fifo_mode #%d\n", fifo_mode); - return -ENODEV; - } - omap_writew(UDC_CFG_LOCK|UDC_SELF_PWR, UDC_SYSCON1); - INFO("fifo mode %d, %d bytes not used\n", fifo_mode, 2048 - buf); - return 0; -} - -static int omap_udc_probe(struct platform_device *pdev) -{ - int status = -ENODEV; - int hmc; - struct usb_phy *xceiv = NULL; - const char *type = NULL; - struct omap_usb_config *config = dev_get_platdata(&pdev->dev); - struct clk *dc_clk = NULL; - struct clk *hhc_clk = NULL; - - if (cpu_is_omap7xx()) - use_dma = 0; - - /* NOTE: "knows" the order of the resources! */ - if (!request_mem_region(pdev->resource[0].start, - pdev->resource[0].end - pdev->resource[0].start + 1, - driver_name)) { - DBG("request_mem_region failed\n"); - return -EBUSY; - } - - if (cpu_is_omap16xx()) { - dc_clk = clk_get(&pdev->dev, "usb_dc_ck"); - hhc_clk = clk_get(&pdev->dev, "usb_hhc_ck"); - BUG_ON(IS_ERR(dc_clk) || IS_ERR(hhc_clk)); - /* can't use omap_udc_enable_clock yet */ - clk_enable(dc_clk); - clk_enable(hhc_clk); - udelay(100); - } - - if (cpu_is_omap7xx()) { - dc_clk = clk_get(&pdev->dev, "usb_dc_ck"); - hhc_clk = clk_get(&pdev->dev, "l3_ocpi_ck"); - BUG_ON(IS_ERR(dc_clk) || IS_ERR(hhc_clk)); - /* can't use omap_udc_enable_clock yet */ - clk_enable(dc_clk); - clk_enable(hhc_clk); - udelay(100); - } - - INFO("OMAP UDC rev %d.%d%s\n", - omap_readw(UDC_REV) >> 4, omap_readw(UDC_REV) & 0xf, - config->otg ? ", Mini-AB" : ""); - - /* use the mode given to us by board init code */ - if (cpu_is_omap15xx()) { - hmc = HMC_1510; - type = "(unknown)"; - - if (machine_without_vbus_sense()) { - /* just set up software VBUS detect, and then - * later rig it so we always report VBUS. - * FIXME without really sensing VBUS, we can't - * know when to turn PULLUP_EN on/off; and that - * means we always "need" the 48MHz clock. - */ - u32 tmp = omap_readl(FUNC_MUX_CTRL_0); - tmp &= ~VBUS_CTRL_1510; - omap_writel(tmp, FUNC_MUX_CTRL_0); - tmp |= VBUS_MODE_1510; - tmp &= ~VBUS_CTRL_1510; - omap_writel(tmp, FUNC_MUX_CTRL_0); - } - } else { - /* The transceiver may package some GPIO logic or handle - * loopback and/or transceiverless setup; if we find one, - * use it. Except for OTG, we don't _need_ to talk to one; - * but not having one probably means no VBUS detection. - */ - xceiv = usb_get_phy(USB_PHY_TYPE_USB2); - if (!IS_ERR_OR_NULL(xceiv)) - type = xceiv->label; - else if (config->otg) { - DBG("OTG requires external transceiver!\n"); - goto cleanup0; - } - - hmc = HMC_1610; - - switch (hmc) { - case 0: /* POWERUP DEFAULT == 0 */ - case 4: - case 12: - case 20: - if (!cpu_is_omap1710()) { - type = "integrated"; - break; - } - /* FALL THROUGH */ - case 3: - case 11: - case 16: - case 19: - case 25: - if (IS_ERR_OR_NULL(xceiv)) { - DBG("external transceiver not registered!\n"); - type = "unknown"; - } - break; - case 21: /* internal loopback */ - type = "loopback"; - break; - case 14: /* transceiverless */ - if (cpu_is_omap1710()) - goto bad_on_1710; - /* FALL THROUGH */ - case 13: - case 15: - type = "no"; - break; - - default: -bad_on_1710: - ERR("unrecognized UDC HMC mode %d\n", hmc); - goto cleanup0; - } - } - - INFO("hmc mode %d, %s transceiver\n", hmc, type); - - /* a "gadget" abstracts/virtualizes the controller */ - status = omap_udc_setup(pdev, xceiv); - if (status) - goto cleanup0; - - xceiv = NULL; - /* "udc" is now valid */ - pullup_disable(udc); -#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) - udc->gadget.is_otg = (config->otg != 0); -#endif - - /* starting with omap1710 es2.0, clear toggle is a separate bit */ - if (omap_readw(UDC_REV) >= 0x61) - udc->clr_halt = UDC_RESET_EP | UDC_CLRDATA_TOGGLE; - else - udc->clr_halt = UDC_RESET_EP; - - /* USB general purpose IRQ: ep0, state changes, dma, etc */ - status = request_irq(pdev->resource[1].start, omap_udc_irq, - 0, driver_name, udc); - if (status != 0) { - ERR("can't get irq %d, err %d\n", - (int) pdev->resource[1].start, status); - goto cleanup1; - } - - /* USB "non-iso" IRQ (PIO for all but ep0) */ - status = request_irq(pdev->resource[2].start, omap_udc_pio_irq, - 0, "omap_udc pio", udc); - if (status != 0) { - ERR("can't get irq %d, err %d\n", - (int) pdev->resource[2].start, status); - goto cleanup2; - } -#ifdef USE_ISO - status = request_irq(pdev->resource[3].start, omap_udc_iso_irq, - 0, "omap_udc iso", udc); - if (status != 0) { - ERR("can't get irq %d, err %d\n", - (int) pdev->resource[3].start, status); - goto cleanup3; - } -#endif - if (cpu_is_omap16xx() || cpu_is_omap7xx()) { - udc->dc_clk = dc_clk; - udc->hhc_clk = hhc_clk; - clk_disable(hhc_clk); - clk_disable(dc_clk); - } - - create_proc_file(); - status = usb_add_gadget_udc_release(&pdev->dev, &udc->gadget, - omap_udc_release); - if (status) - goto cleanup4; - - return 0; - -cleanup4: - remove_proc_file(); - -#ifdef USE_ISO -cleanup3: - free_irq(pdev->resource[2].start, udc); -#endif - -cleanup2: - free_irq(pdev->resource[1].start, udc); - -cleanup1: - kfree(udc); - udc = NULL; - -cleanup0: - if (!IS_ERR_OR_NULL(xceiv)) - usb_put_phy(xceiv); - - if (cpu_is_omap16xx() || cpu_is_omap7xx()) { - clk_disable(hhc_clk); - clk_disable(dc_clk); - clk_put(hhc_clk); - clk_put(dc_clk); - } - - release_mem_region(pdev->resource[0].start, - pdev->resource[0].end - pdev->resource[0].start + 1); - - return status; -} - -static int omap_udc_remove(struct platform_device *pdev) -{ - DECLARE_COMPLETION_ONSTACK(done); - - if (!udc) - return -ENODEV; - - usb_del_gadget_udc(&udc->gadget); - if (udc->driver) - return -EBUSY; - - udc->done = &done; - - pullup_disable(udc); - if (!IS_ERR_OR_NULL(udc->transceiver)) { - usb_put_phy(udc->transceiver); - udc->transceiver = NULL; - } - omap_writew(0, UDC_SYSCON1); - - remove_proc_file(); - -#ifdef USE_ISO - free_irq(pdev->resource[3].start, udc); -#endif - free_irq(pdev->resource[2].start, udc); - free_irq(pdev->resource[1].start, udc); - - if (udc->dc_clk) { - if (udc->clk_requested) - omap_udc_enable_clock(0); - clk_put(udc->hhc_clk); - clk_put(udc->dc_clk); - } - - release_mem_region(pdev->resource[0].start, - pdev->resource[0].end - pdev->resource[0].start + 1); - - wait_for_completion(&done); - - return 0; -} - -/* suspend/resume/wakeup from sysfs (echo > power/state) or when the - * system is forced into deep sleep - * - * REVISIT we should probably reject suspend requests when there's a host - * session active, rather than disconnecting, at least on boards that can - * report VBUS irqs (UDC_DEVSTAT.UDC_ATT). And in any case, we need to - * make host resumes and VBUS detection trigger OMAP wakeup events; that - * may involve talking to an external transceiver (e.g. isp1301). - */ - -static int omap_udc_suspend(struct platform_device *dev, pm_message_t message) -{ - u32 devstat; - - devstat = omap_readw(UDC_DEVSTAT); - - /* we're requesting 48 MHz clock if the pullup is enabled - * (== we're attached to the host) and we're not suspended, - * which would prevent entry to deep sleep... - */ - if ((devstat & UDC_ATT) != 0 && (devstat & UDC_SUS) == 0) { - WARNING("session active; suspend requires disconnect\n"); - omap_pullup(&udc->gadget, 0); - } - - return 0; -} - -static int omap_udc_resume(struct platform_device *dev) -{ - DBG("resume + wakeup/SRP\n"); - omap_pullup(&udc->gadget, 1); - - /* maybe the host would enumerate us if we nudged it */ - msleep(100); - return omap_wakeup(&udc->gadget); -} - -/*-------------------------------------------------------------------------*/ - -static struct platform_driver udc_driver = { - .probe = omap_udc_probe, - .remove = omap_udc_remove, - .suspend = omap_udc_suspend, - .resume = omap_udc_resume, - .driver = { - .owner = THIS_MODULE, - .name = (char *) driver_name, - }, -}; - -module_platform_driver(udc_driver); - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:omap_udc"); -- cgit v1.2.3