/*
- * omap_udc.c -- for OMAP 1610 udc, with OTG support
+ * omap_udc.c -- for OMAP full speed udc; most chips support OTG.
*
* Copyright (C) 2004 Texas Instruments, Inc.
- * Copyright (C) 2004 David Brownell
+ * Copyright (C) 2004-2005 David Brownell
*
* 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
#undef DEBUG
#undef VERBOSE
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/proc_fs.h>
#include <linux/mm.h>
#include <linux/moduleparam.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
#include <linux/usb_ch9.h>
#include <linux/usb_gadget.h>
-#include <linux/usb_otg.h>
+#include <linux/usb/otg.h>
#include <linux/dma-mapping.h>
+#include <linux/clk.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <asm/mach-types.h>
#include <asm/arch/dma.h>
-#include <asm/arch/mux.h>
#include <asm/arch/usb.h>
#include "omap_udc.h"
#undef USB_TRACE
-/* OUT-dma seems to be behaving */
+/* bulk DMA seems to be behaving for both IN and OUT */
#define USE_DMA
+/* FIXME: OMAP2 currently has some problem in DMA mode */
+#ifdef CONFIG_ARCH_OMAP2
+#undef USE_DMA
+#endif
+
/* ISO too */
#define USE_ISO
-
#define DRIVER_DESC "OMAP UDC driver"
-#define DRIVER_VERSION "24 August 2004"
+#define DRIVER_VERSION "4 October 2004"
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
* boot parameter "omap_udc:fifo_mode=42"
*/
module_param (fifo_mode, uint, 0);
-MODULE_PARM_DESC (fifo_mode, "endpoint setup (0 == default)");
-
+MODULE_PARM_DESC (fifo_mode, "endpoint configuration");
#ifdef USE_DMA
static unsigned use_dma = 1;
/*-------------------------------------------------------------------------*/
/* there's a notion of "current endpoint" for modifying endpoint
- * state, and PIO access to its FIFO.
+ * state, and PIO access to its FIFO.
*/
static void use_ep(struct omap_ep *ep, u16 select)
maxp = le16_to_cpu (desc->wMaxPacketSize);
if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
&& maxp != ep->maxpacket)
- || desc->wMaxPacketSize > ep->maxpacket
+ || le16_to_cpu(desc->wMaxPacketSize) > ep->maxpacket
|| !desc->wMaxPacketSize) {
DBG("%s, bad %s maxpacket\n", __FUNCTION__, _ep->name);
return -ERANGE;
ep->has_dma = 0;
ep->lch = -1;
use_ep(ep, UDC_EP_SEL);
- UDC_CTRL_REG = UDC_RESET_EP;
+ UDC_CTRL_REG = udc->clr_halt;
ep->ackwait = 0;
deselect_ep();
list_add(&ep->iso, &udc->iso);
/* maybe assign a DMA channel to this endpoint */
- if (use_dma && desc->bmAttributes == USB_ENDPOINT_XFER_BULK
- && !(ep->bEndpointAddress & USB_DIR_IN))
- /* FIXME ISO can dma, but prefers first channel.
- * IN can dma, but lacks debugging.
- */
+ 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))
+ && !(ep->bEndpointAddress & USB_DIR_IN)) {
UDC_CTRL_REG = UDC_SET_FIFO_EN;
+ ep->ackwait = 1 + ep->double_buf;
+ }
spin_unlock_irqrestore(&udc->lock, flags);
VDBG("%s enabled\n", _ep->name);
}
spin_lock_irqsave(&ep->udc->lock, flags);
- ep->desc = 0;
+ ep->desc = NULL;
nuke (ep, -ESHUTDOWN);
ep->ep.maxpacket = ep->maxpacket;
ep->has_dma = 0;
UDC_CTRL_REG = UDC_SET_HALT;
list_del_init(&ep->iso);
+ del_timer(&ep->timer);
spin_unlock_irqrestore(&ep->udc->lock, flags);
/*-------------------------------------------------------------------------*/
static struct usb_request *
-omap_alloc_request(struct usb_ep *ep, int gfp_flags)
+omap_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
{
struct omap_req *req;
- req = kmalloc(sizeof *req, gfp_flags);
+ req = kzalloc(sizeof(*req), gfp_flags);
if (req) {
- memset (req, 0, sizeof *req);
req->req.dma = DMA_ADDR_INVALID;
INIT_LIST_HEAD (&req->queue);
}
struct usb_ep *_ep,
unsigned bytes,
dma_addr_t *dma,
- int gfp_flags
+ gfp_t gfp_flags
)
{
void *retval;
/*-------------------------------------------------------------------------*/
-#define FIFO_FULL (UDC_NON_ISO_FIFO_FULL | UDC_ISO_FIFO_FULL)
-#define FIFO_UNWRITABLE (UDC_EP_HALTED | FIFO_FULL)
+#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
+static inline int
write_packet(u8 *buf, struct omap_req *req, unsigned max)
{
unsigned len;
/* PIO-IN isn't double buffered except for iso */
ep_stat = UDC_STAT_FLG_REG;
- if (ep_stat & FIFO_UNWRITABLE)
+ if (ep_stat & UDC_FIFO_UNWRITABLE)
return 0;
count = ep->ep.maxpacket;
return is_last;
}
-static inline int
+static inline int
read_packet(u8 *buf, struct omap_req *req, unsigned avail)
{
unsigned len;
u16 ep_stat = UDC_STAT_FLG_REG;
is_last = 0;
- if (ep_stat & FIFO_UNREADABLE)
+ if (ep_stat & FIFO_EMPTY) {
+ if (!ep->double_buf)
+ break;
+ ep->fnf = 1;
+ }
+ if (ep_stat & UDC_EP_HALTED)
break;
- if (ep_stat & (UDC_NON_ISO_FIFO_FULL|UDC_ISO_FIFO_FULL))
+ if (ep_stat & UDC_FIFO_FULL)
avail = ep->ep.maxpacket;
- else
+ else {
avail = UDC_RXFSTAT_REG;
+ ep->fnf = ep->double_buf;
+ }
count = read_packet(buf, req, avail);
- // FIXME double buffered PIO OUT wasn't behaving...
-
/* partial packet reads may not be errors */
if (count < ep->ep.maxpacket) {
is_last = 1;
if (!ep->bEndpointAddress)
break;
- if (!ep->double_buf) {
- UDC_CTRL_REG = UDC_SET_FIFO_EN;
- if (!is_last)
- break;
- }
-
- if (is_last) {
+ if (is_last)
done(ep, req, 0);
- if (list_empty(&ep->queue) || !ep->double_buf)
- break;
- req = container_of(ep->queue.next,
- struct omap_req, queue);
- is_last = 0;
- }
+ break;
}
return is_last;
}
/*-------------------------------------------------------------------------*/
+static inline dma_addr_t dma_csac(unsigned lch)
+{
+ dma_addr_t csac;
+
+ /* omap 3.2/3.3 erratum: sometimes 0 is returned if CSAC/CDAC is
+ * read before the DMA controller finished disabling the channel.
+ */
+ csac = OMAP_DMA_CSAC_REG(lch);
+ if (csac == 0)
+ csac = OMAP_DMA_CSAC_REG(lch);
+ return csac;
+}
+
+static inline dma_addr_t dma_cdac(unsigned lch)
+{
+ dma_addr_t cdac;
+
+ /* omap 3.2/3.3 erratum: sometimes 0 is returned if CSAC/CDAC is
+ * read before the DMA controller finished disabling the channel.
+ */
+ cdac = OMAP_DMA_CDAC_REG(lch);
+ if (cdac == 0)
+ cdac = OMAP_DMA_CDAC_REG(lch);
+ return cdac;
+}
+
+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 = dma_csac(ep->lch);
+ if (end == ep->dma_counter)
+ return 0;
+
+ end |= start & (0xffff << 16);
+ if (end < start)
+ end += 0x10000;
+ return end - start;
+}
+
+#define DMA_DEST_LAST(x) (cpu_is_omap15xx() \
+ ? OMAP_DMA_CSAC_REG(x) /* really: CPC */ \
+ : dma_cdac(x))
+
+static u16 dma_dest_len(struct omap_ep *ep, dma_addr_t start)
+{
+ dma_addr_t end;
+
+ end = DMA_DEST_LAST(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.
{
u16 txdma_ctrl;
unsigned length = req->req.length - req->req.actual;
+ const int sync_mode = cpu_is_omap15xx()
+ ? OMAP_DMA_SYNC_FRAME
+ : OMAP_DMA_SYNC_ELEMENT;
/* measure length in either bytes or packets */
- if (length <= (UDC_TXN_TSC + 1)) {
+ 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, OMAP_DMA_SYNC_ELEMENT);
+ length, 1, sync_mode, 0, 0);
} else {
- length = max(length / ep->maxpacket,
+ length = min(length / ep->maxpacket,
(unsigned) UDC_TXN_TSC + 1);
- txdma_ctrl = length;
- omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S8,
- ep->ep.maxpacket, length,
- OMAP_DMA_SYNC_ELEMENT);
+ txdma_ctrl = length;
+ omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16,
+ ep->ep.maxpacket >> 1, length, sync_mode,
+ 0, 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);
+ OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual,
+ 0, 0);
omap_start_dma(ep->lch);
+ ep->dma_counter = dma_csac(ep->lch);
UDC_DMA_IRQ_EN_REG |= UDC_TX_DONE_IE(ep->dma_channel);
UDC_TXDMA_REG(ep->dma_channel) = UDC_TXN_START | txdma_ctrl;
req->dma_bytes = length;
&& req->dma_bytes != 0
&& (req->req.actual % ep->maxpacket) == 0)
return;
- } else {
- u32 last;
-
- // FIXME this surely isn't #bytes transferred
- last = (omap_readw(OMAP_DMA_CSSA_U(ep->lch)) << 16)
- | omap_readw(OMAP_DMA_CSSA_L(ep->lch));
- req->req.actual = last - req->req.dma;
- }
+ } else
+ req->req.actual += dma_src_len(ep, req->req.dma
+ + req->req.actual);
/* tx completion */
omap_stop_dma(ep->lch);
packets = (req->req.length - req->req.actual) / 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_S8,
- ep->ep.maxpacket, packets,
- OMAP_DMA_SYNC_ELEMENT);
+ omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16,
+ ep->ep.maxpacket >> 1, packets,
+ OMAP_DMA_SYNC_ELEMENT,
+ 0, 0);
omap_set_dma_dest_params(ep->lch, OMAP_DMA_PORT_EMIFF,
- OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual);
+ OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual,
+ 0, 0);
+ ep->dma_counter = DMA_DEST_LAST(ep->lch);
UDC_RXDMA_REG(ep->dma_channel) = UDC_RXN_STOP | (packets - 1);
UDC_DMA_IRQ_EN_REG |= UDC_RX_EOT_IE(ep->dma_channel);
}
static void
-finish_out_dma(struct omap_ep *ep, struct omap_req *req, int status)
+finish_out_dma(struct omap_ep *ep, struct omap_req *req, int status, int one)
{
u16 count;
- /* FIXME must be a better way to see how much dma
- * happened, even when it never got going...
- */
- count = omap_readw(OMAP_DMA_CDAC(ep->lch));
- count -= 0xffff & (req->req.dma + req->req.actual);
+ 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 (!list_empty(&ep->queue)) {
req = container_of(ep->queue.next,
struct omap_req, queue);
- finish_out_dma(ep, req, 0);
+ finish_out_dma(ep, req, 0, dman_stat & UDC_DMA_RX_SB);
}
UDC_IRQ_SRC_REG = UDC_RXN_EOT;
if (irq_src & UDC_RXN_CNT) {
ep = &udc->ep[UDC_DMA_RX_SRC(dman_stat)];
- DBG("%s, RX_CNT irq?\n", ep->ep.name);
+ ep->irqs++;
+ /* omap15xx does this unasked... */
+ VDBG("%s, RX_CNT irq?\n", ep->ep.name);
UDC_IRQ_SRC_REG = UDC_RXN_CNT;
}
}
struct omap_ep *ep = data;
/* if ch_status & OMAP_DMA_DROP_IRQ ... */
- /* if ch_status & OMAP_DMA_TOUT_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 ... */
reg = UDC_TXDMA_CFG_REG;
else
reg = UDC_RXDMA_CFG_REG;
- reg |= 1 << 12; /* "pulse" activated */
+ reg |= UDC_DMA_REQ; /* "pulse" activated */
ep->dma_channel = 0;
ep->lch = -1;
ep->ep.name, dma_error, ep, &ep->lch);
if (status == 0) {
UDC_TXDMA_CFG_REG = reg;
+ /* EMIFF */
+ 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,
- (unsigned long) io_v2p((u32)&UDC_DATA_DMA_REG));
+ (unsigned long) io_v2p((u32)&UDC_DATA_DMA_REG),
+ 0, 0);
}
} else {
status = omap_request_dma(OMAP_DMA_USB_W2FC_RX0 - 1 + channel,
ep->ep.name, dma_error, ep, &ep->lch);
if (status == 0) {
UDC_RXDMA_CFG_REG = reg;
+ /* TIPB */
omap_set_dma_src_params(ep->lch,
OMAP_DMA_PORT_TIPB,
OMAP_DMA_AMODE_CONSTANT,
- (unsigned long) io_v2p((u32)&UDC_DATA_DMA_REG));
+ (unsigned long) io_v2p((u32)&UDC_DATA_DMA_REG),
+ 0, 0);
+ /* EMIFF */
+ omap_set_dma_dest_burst_mode(ep->lch,
+ OMAP_DMA_DATA_BURST_4);
+ omap_set_dma_dest_data_pack(ep->lch, 1);
}
}
if (status)
omap_disable_dma_irq(ep->lch, OMAP_DMA_BLOCK_IRQ);
/* channel type P: hw synch (fifo) */
- omap_writew(2, OMAP_DMA_LCH_CTRL(ep->lch));
+ if (!cpu_is_omap15xx())
+ OMAP1_DMA_LCH_CTRL_REG(ep->lch) = 2;
}
just_restart:
use_ep(ep, UDC_EP_SEL);
(is_in ? write_fifo : read_fifo)(ep, req);
deselect_ep();
+ if (!is_in) {
+ UDC_CTRL_REG = UDC_SET_FIFO_EN;
+ ep->ackwait = 1 + ep->double_buf;
+ }
/* IN: 6 wait states before it'll tx */
}
}
if (!list_empty(&ep->queue))
req = container_of(ep->queue.next, struct omap_req, queue);
else
- req = 0;
+ req = NULL;
- active = ((1 << 7) & omap_readl(OMAP_DMA_CCR(ep->lch))) != 0;
+ active = ((1 << 7) & OMAP_DMA_CCR_REG(ep->lch)) != 0;
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) {
- UDC_TXDMA_CFG_REG &= ~mask;
+ UDC_TXDMA_CFG_REG = (UDC_TXDMA_CFG_REG & ~mask) | UDC_DMA_REQ;
if (req) {
- if (active)
- udelay(50);
finish_in_dma(ep, req, -ECONNRESET);
- if (UDC_TXDMA_CFG_REG & mask)
- WARN("%s, SPIN abort TX dma\n", ep->ep.name);
- }
- /* host may empty the fifo (or not...) */
+ /* clear FIFO; hosts probably won't empty it */
+ use_ep(ep, UDC_EP_SEL);
+ UDC_CTRL_REG = UDC_CLR_EP;
+ deselect_ep();
+ }
while (UDC_TXDMA_CFG_REG & mask)
udelay(10);
-
} else {
- UDC_RXDMA_CFG_REG &= ~mask;
+ UDC_RXDMA_CFG_REG = (UDC_RXDMA_CFG_REG & ~mask) | UDC_DMA_REQ;
/* dma empties the fifo */
- while (active && (UDC_RXDMA_CFG_REG & mask))
+ while (UDC_RXDMA_CFG_REG & mask)
udelay(10);
- omap_stop_dma(ep->lch);
if (req)
- finish_out_dma(ep, req, -ECONNRESET);
+ finish_out_dma(ep, req, -ECONNRESET, 0);
}
omap_free_dma(ep->lch);
ep->dma_channel = 0;
/*-------------------------------------------------------------------------*/
static int
-omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, int gfp_flags)
+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);
UDC_IRQ_EN_REG = irq_en;
}
- /* STATUS is reverse direction */
- UDC_EP_NUM_REG = is_in
- ? UDC_EP_SEL
- : (UDC_EP_SEL|UDC_EP_DIR);
+ /* STATUS for zero length DATA stages is
+ * always an IN ... even for IN transfers,
+ * a wierd case which seem to stall OMAP.
+ */
+ UDC_EP_NUM_REG = (UDC_EP_SEL|UDC_EP_DIR);
UDC_CTRL_REG = UDC_CLR_EP;
UDC_CTRL_REG = UDC_SET_FIFO_EN;
- UDC_EP_NUM_REG = udc->ep0_in ? 0 : UDC_EP_DIR;
+ UDC_EP_NUM_REG = UDC_EP_DIR;
/* cleanup */
udc->ep0_pending = 0;
done(ep, req, 0);
- req = 0;
+ req = NULL;
/* non-empty DATA stage */
} else if (is_in) {
(is_in ? next_in_dma : next_out_dma)(ep, req);
else if (req) {
if ((is_in ? write_fifo : read_fifo)(ep, req) == 1)
- req = 0;
+ req = NULL;
deselect_ep();
+ if (!is_in) {
+ UDC_CTRL_REG = UDC_SET_FIFO_EN;
+ ep->ackwait = 1 + ep->double_buf;
+ }
/* IN: 6 wait states before it'll tx */
}
}
irq_wait:
/* irq handler advances the queue */
- if (req != 0)
+ if (req != NULL)
list_add_tail(&req->queue, &ep->queue);
spin_unlock_irqrestore(&udc->lock, flags);
if (use_dma && ep->dma_channel && ep->queue.next == &req->queue) {
int channel = ep->dma_channel;
- /* releasing the dma completion cancels the request,
+ /* releasing the channel cancels the request,
* reclaiming the channel restarts the queue
*/
dma_channel_release(ep);
dma_channel_claim(ep, channel);
- } else
+ } else
done(ep, req, -ECONNRESET);
spin_unlock_irqrestore(&ep->udc->lock, flags);
return 0;
/* IN endpoints must already be idle */
if ((ep->bEndpointAddress & USB_DIR_IN)
- && !list_empty(&ep->queue)) {
+ && !list_empty(&ep->queue)) {
status = -EAGAIN;
goto done;
}
dma_channel_claim(ep, channel);
} else {
use_ep(ep, 0);
- UDC_CTRL_REG = UDC_RESET_EP;
+ UDC_CTRL_REG = ep->udc->clr_halt;
ep->ackwait = 0;
- if (!(ep->bEndpointAddress & USB_DIR_IN))
+ if (!(ep->bEndpointAddress & USB_DIR_IN)) {
UDC_CTRL_REG = UDC_SET_FIFO_EN;
+ ep->ackwait = 1 + ep->double_buf;
+ }
}
}
done:
static void pullup_enable(struct omap_udc *udc)
{
+ udc->gadget.dev.parent->power.power_state = PMSG_ON;
+ udc->gadget.dev.power.power_state = PMSG_ON;
UDC_SYSCON1_REG |= UDC_PULLUP_EN;
#ifndef CONFIG_USB_OTG
- OTG_CTRL_REG |= OTG_BSESSVLD;
+ if (!cpu_is_omap15xx())
+ OTG_CTRL_REG |= OTG_BSESSVLD;
#endif
UDC_IRQ_EN_REG = UDC_DS_CHG_IE;
}
static void pullup_disable(struct omap_udc *udc)
{
#ifndef CONFIG_USB_OTG
- OTG_CTRL_REG &= ~OTG_BSESSVLD;
+ if (!cpu_is_omap15xx())
+ OTG_CTRL_REG &= ~OTG_BSESSVLD;
#endif
UDC_IRQ_EN_REG = UDC_DS_CHG_IE;
UDC_SYSCON1_REG &= ~UDC_PULLUP_EN;
}
+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.
+ * driver, or maybe GPIO0 VBUS IRQ. May request 48 MHz clock.
*/
static int omap_vbus_session(struct usb_gadget *gadget, int is_active)
{
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 */
+ if (is_active)
+ FUNC_MUX_CTRL_0_REG |= VBUS_CTRL_1510;
+ else
+ FUNC_MUX_CTRL_0_REG &= ~VBUS_CTRL_1510;
+ }
+ 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 void ep0_irq(struct omap_udc *udc, u16 irq_src)
{
struct omap_ep *ep0 = &udc->ep[0];
- struct omap_req *req = 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)
+ if (irq_src & UDC_SETUP) {
+ u16 ack = irq_src & (UDC_EP0_TX|UDC_EP0_RX);
+
nuke(ep0, 0);
+ if (ack) {
+ UDC_IRQ_SRC_REG = ack;
+ irq_src = UDC_SETUP;
+ }
+ }
- /* IN/OUT packets mean we're in the DATA or STATUS stage.
+ /* 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.
if (req)
done(ep0, req, 0);
}
- req = 0;
+ req = NULL;
} else if (stat & UDC_STALL) {
UDC_CTRL_REG = UDC_CLR_HALT;
UDC_EP_NUM_REG = UDC_EP_DIR;
} else if (stat == 0)
UDC_CTRL_REG = UDC_SET_FIFO_EN;
UDC_EP_NUM_REG = 0;
-
+
/* activate status stage */
if (stat == 1) {
done(ep0, req, 0);
u.word[3] = UDC_DATA_REG;
UDC_EP_NUM_REG = 0;
} while (UDC_IRQ_SRC_REG & UDC_SETUP);
- le16_to_cpus (&u.r.wValue);
- le16_to_cpus (&u.r.wIndex);
- le16_to_cpus (&u.r.wLength);
+
+#define w_value le16_to_cpup (&u.r.wValue)
+#define w_index le16_to_cpup (&u.r.wIndex)
+#define w_length le16_to_cpup (&u.r.wLength)
/* Delegate almost all control requests to the gadget driver,
* except for a handful of ch9 status/feature requests that
/* udc needs to know when ep != 0 is valid */
if (u.r.bRequestType != USB_RECIP_DEVICE)
goto delegate;
- if (u.r.wLength != 0)
+ if (w_length != 0)
goto do_stall;
udc->ep0_set_config = 1;
- udc->ep0_reset_config = (u.r.wValue == 0);
- VDBG("set config %d\n", u.r.wValue);
+ 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
/* clear endpoint halt */
if (u.r.bRequestType != USB_RECIP_ENDPOINT)
goto delegate;
- if (u.r.wValue != USB_ENDPOINT_HALT
- || u.r.wLength != 0)
+ if (w_value != USB_ENDPOINT_HALT
+ || w_length != 0)
goto do_stall;
- ep = &udc->ep[u.r.wIndex & 0xf];
+ ep = &udc->ep[w_index & 0xf];
if (ep != ep0) {
- if (u.r.wIndex & USB_DIR_IN)
+ if (w_index & USB_DIR_IN)
ep += 16;
if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC
|| !ep->desc)
goto do_stall;
use_ep(ep, 0);
- UDC_CTRL_REG = UDC_RESET_EP;
+ UDC_CTRL_REG = udc->clr_halt;
ep->ackwait = 0;
- if (!(ep->bEndpointAddress & USB_DIR_IN))
+ if (!(ep->bEndpointAddress & USB_DIR_IN)) {
UDC_CTRL_REG = UDC_SET_FIFO_EN;
+ 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;
/* set endpoint halt */
if (u.r.bRequestType != USB_RECIP_ENDPOINT)
goto delegate;
- if (u.r.wValue != USB_ENDPOINT_HALT
- || u.r.wLength != 0)
+ if (w_value != USB_ENDPOINT_HALT
+ || w_length != 0)
goto do_stall;
- ep = &udc->ep[u.r.wIndex & 0xf];
- if (u.r.wIndex & USB_DIR_IN)
+ ep = &udc->ep[w_index & 0xf];
+ if (w_index & USB_DIR_IN)
ep += 16;
if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC
|| ep == ep0 || !ep->desc)
UDC_CTRL_REG = UDC_SET_FIFO_EN;
UDC_EP_NUM_REG = UDC_EP_DIR;
status = 0;
- VDBG("GET_STATUS, interface %d\n", u.r.wIndex);
+ VDBG("GET_STATUS, interface %d\n", w_index);
/* next, status stage */
break;
default:
delegate:
/* activate the ep0out fifo right away */
- if (!udc->ep0_in && u.r.wLength) {
+ if (!udc->ep0_in && w_length) {
UDC_EP_NUM_REG = 0;
UDC_CTRL_REG = UDC_SET_FIFO_EN;
}
*/
VDBG("SETUP %02x.%02x v%04x i%04x l%04x\n",
u.r.bRequestType, u.r.bRequest,
- u.r.wValue, u.r.wIndex, u.r.wLength);
+ 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.
udc->driver->suspend(&udc->gadget);
spin_lock(&udc->lock);
}
+ if (udc->transceiver)
+ otg_set_suspend(udc->transceiver, 1);
} else {
VDBG("resume\n");
+ if (udc->transceiver)
+ otg_set_suspend(udc->transceiver, 0);
if (udc->gadget.speed == USB_SPEED_FULL
&& udc->driver->resume) {
spin_unlock(&udc->lock);
}
change &= ~UDC_SUS;
}
- if (change & OTG_FLAGS) {
+ if (!cpu_is_omap15xx() && (change & OTG_FLAGS)) {
update_otg(udc);
change &= ~OTG_FLAGS;
}
UDC_IRQ_SRC_REG = UDC_DS_CHG;
}
-static irqreturn_t
-omap_udc_irq(int irq, void *_udc, struct pt_regs *r)
+static irqreturn_t omap_udc_irq(int irq, void *_udc)
{
struct omap_udc *udc = _udc;
u16 irq_src;
return status;
}
-static irqreturn_t
-omap_udc_pio_irq(int irq, void *_dev, struct pt_regs *r)
+/* 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 = UDC_STAT_FLG_REG;
+
+ 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);
+ UDC_EP_NUM_REG = ep->bEndpointAddress;
+ UDC_CTRL_REG = UDC_SET_FIFO_EN;
+ 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;
ep = &udc->ep[epnum];
ep->irqs++;
- if (!list_empty(&ep->queue)) {
- UDC_EP_NUM_REG = epnum | UDC_EP_SEL;
- if ((UDC_STAT_FLG_REG & UDC_ACK)) {
+ UDC_EP_NUM_REG = epnum | UDC_EP_SEL;
+ ep->fnf = 0;
+ if ((UDC_STAT_FLG_REG & 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);
- // FIXME double buffered PIO OUT should work
+ if (!ep->double_buf)
+ ep->fnf = 1;
}
- UDC_EP_NUM_REG = epnum;
}
+ /* min 6 clock delay before clearing EP_SEL ... */
+ epn_stat = UDC_EPN_STAT_REG;
+ epn_stat = UDC_EPN_STAT_REG;
+ UDC_EP_NUM_REG = epnum;
+
+ /* enabling fifo _after_ clearing ACK, contrary to docs,
+ * reduces lossage; timer still needed though (sigh).
+ */
+ if (ep->fnf) {
+ UDC_CTRL_REG = UDC_SET_FIFO_EN;
+ ep->ackwait = 1 + ep->double_buf;
+ }
+ mod_timer(&ep->timer, PIO_OUT_TIMEOUT);
}
/* then IN transfers */
- if (irq_src & UDC_EPN_TX) {
+ else if (irq_src & UDC_EPN_TX) {
epnum = epn_stat & 0x0f;
UDC_IRQ_SRC_REG = UDC_EPN_TX;
status = IRQ_HANDLED;
ep = &udc->ep[16 + epnum];
ep->irqs++;
- ep->ackwait = 0;
- if (!list_empty(&ep->queue)) {
- UDC_EP_NUM_REG = epnum | UDC_EP_DIR | UDC_EP_SEL;
- if ((UDC_STAT_FLG_REG & UDC_ACK)) {
+ UDC_EP_NUM_REG = epnum | UDC_EP_DIR | UDC_EP_SEL;
+ if ((UDC_STAT_FLG_REG & 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);
}
- UDC_EP_NUM_REG = epnum | UDC_EP_DIR;
- /* 6 wait states before it'll tx */
}
+ /* min 6 clock delay before clearing EP_SEL ... */
+ epn_stat = UDC_EPN_STAT_REG;
+ epn_stat = UDC_EPN_STAT_REG;
+ UDC_EP_NUM_REG = epnum | UDC_EP_DIR;
+ /* then 6 clocks before it'd tx */
}
spin_unlock_irqrestore(&udc->lock, flags);
}
#ifdef USE_ISO
-static irqreturn_t
-omap_udc_iso_irq(int irq, void *_dev, struct pt_regs *r)
+static irqreturn_t omap_udc_iso_irq(int irq, void *_dev)
{
struct omap_udc *udc = _dev;
struct omap_ep *ep;
/*-------------------------------------------------------------------------*/
-static struct omap_udc *udc;
+static inline int machine_needs_vbus_session(void)
+{
+ return (machine_is_omap_innovator()
+ || machine_is_omap_osk()
+ || machine_is_omap_apollon()
+#ifndef CONFIG_MACH_OMAP_H4_OTG
+ || machine_is_omap_h4()
+#endif
+ || machine_is_sx1()
+ );
+}
int usb_gadget_register_driver (struct usb_gadget_driver *driver)
{
// FIXME if otg, check: driver->is_otg
|| driver->speed < USB_SPEED_FULL
|| !driver->bind
- || !driver->unbind
|| !driver->setup)
return -EINVAL;
udc->softconnect = 1;
/* hook up the driver */
- driver->driver.bus = 0;
+ driver->driver.bus = NULL;
udc->driver = driver;
udc->gadget.dev.driver = &driver->driver;
spin_unlock_irqrestore(&udc->lock, flags);
+ if (udc->dc_clk != NULL)
+ omap_udc_enable_clock(1);
+
status = driver->bind (&udc->gadget);
if (status) {
DBG("bind to %s --> %d\n", driver->driver.name, status);
- udc->gadget.dev.driver = 0;
- udc->driver = 0;
+ udc->gadget.dev.driver = NULL;
+ udc->driver = NULL;
goto done;
}
DBG("bound to driver %s\n", driver->driver.name);
status = otg_set_peripheral(udc->transceiver, &udc->gadget);
if (status < 0) {
ERR("can't bind to transceiver\n");
- driver->unbind (&udc->gadget);
- udc->gadget.dev.driver = 0;
- udc->driver = 0;
+ if (driver->unbind) {
+ driver->unbind (&udc->gadget);
+ udc->gadget.dev.driver = NULL;
+ udc->driver = NULL;
+ }
goto done;
}
} 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_needs_vbus_session())
+ omap_vbus_session(&udc->gadget, 1);
+
done:
+ if (udc->dc_clk != NULL)
+ omap_udc_enable_clock(0);
return status;
}
EXPORT_SYMBOL(usb_gadget_register_driver);
if (!udc)
return -ENODEV;
- if (!driver || driver != udc->driver)
+ if (!driver || driver != udc->driver || !driver->unbind)
return -EINVAL;
+ if (udc->dc_clk != NULL)
+ omap_udc_enable_clock(1);
+
+ if (machine_needs_vbus_session())
+ omap_vbus_session(&udc->gadget, 0);
+
if (udc->transceiver)
- (void) otg_set_peripheral(udc->transceiver, 0);
+ (void) otg_set_peripheral(udc->transceiver, NULL);
else
pullup_disable(udc);
spin_unlock_irqrestore(&udc->lock, flags);
driver->unbind(&udc->gadget);
- udc->gadget.dev.driver = 0;
- udc->driver = 0;
-
+ udc->gadget.dev.driver = NULL;
+ udc->driver = NULL;
+ if (udc->dc_clk != NULL)
+ omap_udc_enable_clock(0);
DBG("unregistered driver '%s'\n", driver->driver.name);
return status;
}
/*-------------------------------------------------------------------------*/
-#ifdef CONFIG_USB_OMAP_PROC
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
#include <linux/seq_file.h>
stat_flg = UDC_STAT_FLG_REG;
seq_printf(s,
- "\n%s %sirqs %ld stat %04x " EIGHTBITS FOURBITS "%s\n",
- ep->name, buf, ep->irqs, stat_flg,
+ "\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 " : "",
if (list_empty (&ep->queue))
seq_printf(s, "\t(queue empty)\n");
else
- list_for_each_entry (req, &ep->queue, queue)
+ 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, req->req.actual,
+ &req->req, length,
req->req.length, req->req.buf);
+ }
}
-static char *trx_mode(unsigned m)
+static char *trx_mode(unsigned m, int enabled)
{
switch (m) {
- case 3:
- case 0: return "6wire";
+ case 0: return enabled ? "*6wire" : "unused";
case 1: return "4wire";
case 2: return "3wire";
+ case 3: return "6wire";
default: return "unknown";
}
}
-static int proc_udc_show(struct seq_file *s, void *_)
+static int proc_otg_show(struct seq_file *s)
{
u32 tmp;
- struct omap_ep *ep;
- unsigned long flags;
-
- spin_lock_irqsave(&udc->lock, flags);
+ u32 trans;
+ char *ctrl_name;
- seq_printf(s, "%s, version: " DRIVER_VERSION
-#ifdef USE_ISO
- " (iso)"
-#endif
- "%s\n",
- driver_desc,
- use_dma ? " (dma)" : "");
-
- tmp = UDC_REV_REG & 0xff;
- seq_printf(s,
- "UDC rev %d.%d, OTG rev %d.%d, fifo mode %d, gadget %s\n"
- "hmc %d, transceiver %08x %s\n",
- tmp >> 4, tmp & 0xf,
- OTG_REV_REG >> 4, OTG_REV_REG & 0xf,
- fifo_mode,
- udc->driver ? udc->driver->driver.name : "(none)",
- HMC, USB_TRANSCEIVER_CTRL_REG,
- udc->transceiver ? udc->transceiver->label : "");
-
- /* OTG controller registers */
+ tmp = OTG_REV_REG;
+ if (cpu_is_omap24xx()) {
+ ctrl_name = "control_devconf";
+ trans = CONTROL_DEVCONF_REG;
+ } else {
+ ctrl_name = "tranceiver_ctrl";
+ trans = USB_TRANSCEIVER_CTRL_REG;
+ }
+ seq_printf(s, "\nOTG rev %d.%d, %s %05x\n",
+ tmp >> 4, tmp & 0xf, ctrl_name, trans);
tmp = OTG_SYSCON_1_REG;
seq_printf(s, "otg_syscon1 %08x usb2 %s, usb1 %s, usb0 %s,"
FOURBITS "\n", tmp,
- trx_mode(USB2_TRX_MODE(tmp)),
- trx_mode(USB1_TRX_MODE(tmp)),
- trx_mode(USB0_TRX_MODE(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" : "",
seq_printf(s, "otg_outctrl %04x" "\n", tmp);
tmp = OTG_TEST_REG;
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 = UDC_REV_REG & 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() || cpu_is_omap24xx())
+ ? "external" : "(none)"));
+ if (cpu_class_is_omap1()) {
+ seq_printf(s, "ULPD control %04x req %04x status %04x\n",
+ __REG16(ULPD_CLOCK_CTRL),
+ __REG16(ULPD_SOFT_REQ),
+ __REG16(ULPD_STATUS_REQ));
+ }
+
+ /* OTG controller registers */
+ if (!cpu_is_omap15xx())
+ proc_otg_show(s);
tmp = UDC_SYSCON1_REG;
seq_printf(s, "\nsyscon1 %04x" EIGHTBITS "\n", tmp,
static int proc_udc_open(struct inode *inode, struct file *file)
{
- return single_open(file, proc_udc_show, 0);
+ return single_open(file, proc_udc_show, NULL);
}
-static struct file_operations proc_ops = {
+static const struct file_operations proc_ops = {
.open = proc_udc_open,
.read = seq_read,
.llseek = seq_lseek,
static void remove_proc_file(void)
{
- remove_proc_entry(proc_filename, 0);
+ remove_proc_entry(proc_filename, NULL);
}
#else
/* 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_REG.CFG_LOCK is set can now work. We won't use that
+ * capability yet though.
*/
static unsigned __init
omap_ep_setup(char *name, u8 addr, u8 type,
epn_rxtx |= UDC_EPN_RX_ISO;
dbuf = 1;
} else {
- /* pio-out could potentially double-buffer,
- * as can (should!) DMA-IN
+ /* double-buffering "not supported" on 15xx,
+ * and ignored for PIO-IN on newer chips
+ * (for more reliable behavior)
*/
- if (!use_dma || (addr & USB_DIR_IN))
+ if (!use_dma || cpu_is_omap15xx() || cpu_is_omap24xx())
dbuf = 0;
switch (maxp) {
}
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;
ep->bEndpointAddress = addr;
ep->bmAttributes = type;
ep->double_buf = dbuf;
- ep->udc = udc;
+ ep->udc = udc;
ep->ep.name = ep->name;
ep->ep.ops = &omap_ep_ops;
{
complete(udc->done);
kfree (udc);
- udc = 0;
+ udc = NULL;
}
static int __init
/* UDC_PULLUP_EN gates the chip clock */
// OTG_SYSCON_1_REG |= DEV_IDLE_EN;
- udc = kmalloc (sizeof *udc, SLAB_KERNEL);
+ udc = kzalloc(sizeof(*udc), GFP_KERNEL);
if (!udc)
return -ENOMEM;
- memset(udc, 0, sizeof *udc);
spin_lock_init (&udc->lock);
udc->gadget.ops = &omap_gadget_ops;
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);
- OMAP_INT_EP("ep9in", USB_DIR_IN | 9, 16);
- OMAP_INT_EP("ep10out", USB_DIR_IN | 10, 16);
- OMAP_INT_EP("ep11in", USB_DIR_IN | 9, 16);
- OMAP_INT_EP("ep12out", USB_DIR_IN | 10, 16);
break;
#ifdef USE_ISO
return 0;
}
-static int __init omap_udc_probe(struct device *dev)
+static int __init omap_udc_probe(struct platform_device *pdev)
{
- struct platform_device *odev = to_platform_device(dev);
int status = -ENODEV;
int hmc;
- struct otg_transceiver *xceiv = 0;
- const char *type = 0;
- struct omap_usb_config *config = dev->platform_data;
+ struct otg_transceiver *xceiv = NULL;
+ const char *type = NULL;
+ struct omap_usb_config *config = pdev->dev.platform_data;
+ struct clk *dc_clk;
+ struct clk *hhc_clk;
/* NOTE: "knows" the order of the resources! */
- if (!request_mem_region(odev->resource[0].start,
- odev->resource[0].end - odev->resource[0].start + 1,
+ 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;
}
- INFO("OMAP UDC rev %d.%d, OTG rev %d.%d, %s receptacle\n",
+ 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_omap24xx()) {
+ dc_clk = clk_get(&pdev->dev, "usb_fck");
+ hhc_clk = clk_get(&pdev->dev, "usb_l4_ick");
+ 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",
UDC_REV_REG >> 4, UDC_REV_REG & 0xf,
- OTG_REV_REG >> 4, OTG_REV_REG & 0xf,
- config->otg ? "Mini-AB" : "B/Mini-B");
+ config->otg ? ", Mini-AB" : "");
/* use the mode given to us by board init code */
- hmc = HMC;
- switch (hmc) {
- case 3:
- case 11:
- case 19:
- case 25:
+ if (cpu_is_omap15xx()) {
+ hmc = HMC_1510;
+ type = "(unknown)";
+
+ if (machine_is_omap_innovator() || machine_is_sx1()) {
+ /* 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 = FUNC_MUX_CTRL_0_REG;
+
+ FUNC_MUX_CTRL_0_REG &= ~VBUS_CTRL_1510;
+ tmp |= VBUS_MODE_1510;
+ tmp &= ~VBUS_CTRL_1510;
+ FUNC_MUX_CTRL_0_REG = tmp;
+ }
+ } 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 = otg_get_transceiver();
- if (!xceiv) {
- DBG("external transceiver not registered!\n");
+ if (xceiv)
+ type = xceiv->label;
+ else if (config->otg) {
+ DBG("OTG requires external transceiver!\n");
goto cleanup0;
}
- type = xceiv->label;
- break;
- case 0: /* POWERUP DEFAULT == 0 */
- case 4:
- case 12:
- case 20:
- type = "INTEGRATED";
- break;
- case 21: /* internal loopback */
- type = "(loopback)";
- break;
- case 14: /* transceiverless */
- type = "(none)";
- break;
- default:
- ERR("unrecognized UDC HMC mode %d\n", hmc);
- return -ENODEV;
+ hmc = HMC_1610;
+
+ if (cpu_is_omap24xx()) {
+ /* this could be transceiverless in one of the
+ * "we don't need to know" modes.
+ */
+ type = "external";
+ goto known;
+ }
+
+ 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 (!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, transceiver %s\n", hmc, type);
+known:
+ INFO("hmc mode %d, %s transceiver\n", hmc, type);
/* a "gadget" abstracts/virtualizes the controller */
- status = omap_udc_setup(odev, xceiv);
+ status = omap_udc_setup(pdev, xceiv);
if (status) {
goto cleanup0;
}
- xceiv = 0;
+ 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 (UDC_REV_REG >= 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(odev->resource[1].start, omap_udc_irq,
- SA_SAMPLE_RANDOM, driver_name, udc);
+ status = request_irq(pdev->resource[1].start, omap_udc_irq,
+ IRQF_SAMPLE_RANDOM, driver_name, udc);
if (status != 0) {
- ERR( "can't get irq %ld, err %d\n",
- odev->resource[1].start, status);
+ 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(odev->resource[2].start, omap_udc_pio_irq,
- SA_SAMPLE_RANDOM, "omap_udc pio", udc);
+ status = request_irq(pdev->resource[2].start, omap_udc_pio_irq,
+ IRQF_SAMPLE_RANDOM, "omap_udc pio", udc);
if (status != 0) {
- ERR( "can't get irq %ld, err %d\n",
- odev->resource[2].start, status);
+ ERR("can't get irq %d, err %d\n",
+ (int) pdev->resource[2].start, status);
goto cleanup2;
}
#ifdef USE_ISO
- status = request_irq(odev->resource[3].start, omap_udc_iso_irq,
- SA_INTERRUPT, "omap_udc iso", udc);
+ status = request_irq(pdev->resource[3].start, omap_udc_iso_irq,
+ IRQF_DISABLED, "omap_udc iso", udc);
if (status != 0) {
- ERR("can't get irq %ld, err %d\n",
- odev->resource[3].start, status);
+ ERR("can't get irq %d, err %d\n",
+ (int) pdev->resource[3].start, status);
goto cleanup3;
}
#endif
+ if (cpu_is_omap16xx()) {
+ udc->dc_clk = dc_clk;
+ udc->hhc_clk = hhc_clk;
+ clk_disable(hhc_clk);
+ clk_disable(dc_clk);
+ }
+
+ if (cpu_is_omap24xx()) {
+ udc->dc_clk = dc_clk;
+ udc->hhc_clk = hhc_clk;
+ /* FIXME OMAP2 don't release hhc & dc clock */
+#if 0
+ clk_disable(hhc_clk);
+ clk_disable(dc_clk);
+#endif
+ }
create_proc_file();
- device_add(&udc->gadget.dev);
- return 0;
-
+ status = device_add(&udc->gadget.dev);
+ if (!status)
+ return status;
+ /* If fail, fall through */
#ifdef USE_ISO
cleanup3:
- free_irq(odev->resource[2].start, udc);
+ free_irq(pdev->resource[2].start, udc);
#endif
cleanup2:
- free_irq(odev->resource[1].start, udc);
+ free_irq(pdev->resource[1].start, udc);
cleanup1:
kfree (udc);
- udc = 0;
+ udc = NULL;
cleanup0:
if (xceiv)
put_device(xceiv->dev);
- release_mem_region(odev->resource[0].start,
- odev->resource[0].end - odev->resource[0].start + 1);
+
+ if (cpu_is_omap16xx() || cpu_is_omap24xx()) {
+ 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 __exit omap_udc_remove(struct device *dev)
+static int __exit omap_udc_remove(struct platform_device *pdev)
{
- struct platform_device *odev = to_platform_device(dev);
- DECLARE_COMPLETION(done);
+ DECLARE_COMPLETION_ONSTACK(done);
if (!udc)
return -ENODEV;
+ if (udc->driver)
+ return -EBUSY;
udc->done = &done;
pullup_disable(udc);
if (udc->transceiver) {
put_device(udc->transceiver->dev);
- udc->transceiver = 0;
+ udc->transceiver = NULL;
}
UDC_SYSCON1_REG = 0;
remove_proc_file();
#ifdef USE_ISO
- free_irq(odev->resource[3].start, udc);
+ free_irq(pdev->resource[3].start, udc);
#endif
- free_irq(odev->resource[2].start, udc);
- free_irq(odev->resource[1].start, udc);
+ free_irq(pdev->resource[2].start, udc);
+ free_irq(pdev->resource[1].start, udc);
- release_mem_region(odev->resource[0].start,
- odev->resource[0].end - odev->resource[0].start + 1);
+ 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);
device_unregister(&udc->gadget.dev);
wait_for_completion(&done);
return 0;
}
-/* suspend/resume/wakeup from sysfs (echo > power/state) */
+/* 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_REG.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 device *dev, u32 state, u32 level)
+static int omap_udc_suspend(struct platform_device *dev, pm_message_t message)
{
- if (level != 0)
- return 0;
+ u32 devstat;
+
+ devstat = UDC_DEVSTAT_REG;
- DBG("suspend, state %d\n", state);
- omap_pullup(&udc->gadget, 0);
- udc->gadget.dev.power.power_state = 3;
- udc->gadget.dev.parent->power.power_state = 3;
+ /* 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) {
+ WARN("session active; suspend requires disconnect\n");
+ omap_pullup(&udc->gadget, 0);
+ }
+
+ udc->gadget.dev.power.power_state = PMSG_SUSPEND;
+ udc->gadget.dev.parent->power.power_state = PMSG_SUSPEND;
return 0;
}
-static int omap_udc_resume(struct device *dev, u32 level)
+static int omap_udc_resume(struct platform_device *dev)
{
- if (level != 0)
- return 0;
-
DBG("resume + wakeup/SRP\n");
- udc->gadget.dev.parent->power.power_state = 0;
- udc->gadget.dev.power.power_state = 0;
omap_pullup(&udc->gadget, 1);
/* maybe the host would enumerate us if we nudged it */
/*-------------------------------------------------------------------------*/
-static struct device_driver udc_driver = {
- .name = (char *) driver_name,
- .bus = &platform_bus_type,
+static struct platform_driver udc_driver = {
.probe = omap_udc_probe,
.remove = __exit_p(omap_udc_remove),
.suspend = omap_udc_suspend,
.resume = omap_udc_resume,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = (char *) driver_name,
+ },
};
static int __init udc_init(void)
{
- /* should work on many OMAP systems with at most minor changes,
- * but the 1510 doesn't have an OTG controller.
- */
- if (cpu_is_omap1510()) {
- DBG("no OMAP1510 support yet\n");
- return -ENODEV;
- }
- INFO("%s, version: " DRIVER_VERSION "%s\n", driver_desc,
+ INFO("%s, version: " DRIVER_VERSION
+#ifdef USE_ISO
+ " (iso)"
+#endif
+ "%s\n", driver_desc,
use_dma ? " (dma)" : "");
- return driver_register(&udc_driver);
+ return platform_driver_register(&udc_driver);
}
module_init(udc_init);
static void __exit udc_exit(void)
{
- driver_unregister(&udc_driver);
+ platform_driver_unregister(&udc_driver);
}
module_exit(udc_exit);
git://git.onelab.eu / linux-2.6.git / blobdiff