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path: root/drivers/usb/gadget/omap_udc.c
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Diffstat (limited to 'drivers/usb/gadget/omap_udc.c')
-rw-r--r--drivers/usb/gadget/omap_udc.c301
1 files changed, 205 insertions, 96 deletions
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index 98cbcbc16cc..a2b812af6e6 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -52,7 +52,6 @@
#include <asm/mach-types.h>
#include <asm/arch/dma.h>
-#include <asm/arch/mux.h>
#include <asm/arch/usb.h>
#include "omap_udc.h"
@@ -167,7 +166,7 @@ static int omap_ep_enable(struct usb_ep *_ep,
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;
@@ -214,7 +213,7 @@ static int omap_ep_enable(struct usb_ep *_ep,
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();
@@ -253,7 +252,7 @@ static int omap_ep_disable(struct usb_ep *_ep)
}
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;
@@ -388,8 +387,8 @@ done(struct omap_ep *ep, struct omap_req *req, int status)
/*-------------------------------------------------------------------------*/
-#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)
@@ -433,7 +432,7 @@ static int write_fifo(struct omap_ep *ep, struct omap_req *req)
/* 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;
@@ -504,7 +503,7 @@ static int read_fifo(struct omap_ep *ep, struct omap_req *req)
if (ep_stat & UDC_EP_HALTED)
break;
- if (ep_stat & FIFO_FULL)
+ if (ep_stat & UDC_FIFO_FULL)
avail = ep->ep.maxpacket;
else {
avail = UDC_RXFSTAT_REG;
@@ -538,6 +537,32 @@ static int read_fifo(struct omap_ep *ep, struct omap_req *req)
/*-------------------------------------------------------------------------*/
+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_readw(OMAP_DMA_CSAC(lch));
+ if (csac == 0)
+ csac = omap_readw(OMAP_DMA_CSAC(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_readw(OMAP_DMA_CDAC(lch));
+ if (cdac == 0)
+ cdac = omap_readw(OMAP_DMA_CDAC(lch));
+ return cdac;
+}
+
static u16 dma_src_len(struct omap_ep *ep, dma_addr_t start)
{
dma_addr_t end;
@@ -548,7 +573,7 @@ static u16 dma_src_len(struct omap_ep *ep, dma_addr_t start)
if (cpu_is_omap15xx())
return 0;
- end = omap_readw(OMAP_DMA_CSAC(ep->lch));
+ end = dma_csac(ep->lch);
if (end == ep->dma_counter)
return 0;
@@ -559,14 +584,14 @@ static u16 dma_src_len(struct omap_ep *ep, dma_addr_t start)
}
#define DMA_DEST_LAST(x) (cpu_is_omap15xx() \
- ? OMAP_DMA_CSAC(x) /* really: CPC */ \
- : OMAP_DMA_CDAC(x))
+ ? omap_readw(OMAP_DMA_CSAC(x)) /* really: CPC */ \
+ : dma_cdac(x))
static u16 dma_dest_len(struct omap_ep *ep, dma_addr_t start)
{
dma_addr_t end;
- end = omap_readw(DMA_DEST_LAST(ep->lch));
+ end = DMA_DEST_LAST(ep->lch);
if (end == ep->dma_counter)
return 0;
@@ -593,7 +618,7 @@ static void next_in_dma(struct omap_ep *ep, struct omap_req *req)
: OMAP_DMA_SYNC_ELEMENT;
/* measure length in either bytes or packets */
- if ((cpu_is_omap16xx() && 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,
@@ -602,15 +627,15 @@ static void next_in_dma(struct omap_ep *ep, struct omap_req *req)
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, sync_mode);
+ omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16,
+ ep->ep.maxpacket >> 1, length, sync_mode);
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_start_dma(ep->lch);
- ep->dma_counter = omap_readw(OMAP_DMA_CSAC(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;
@@ -650,12 +675,12 @@ static void next_out_dma(struct omap_ep *ep, struct omap_req *req)
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_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16,
+ ep->ep.maxpacket >> 1, packets,
OMAP_DMA_SYNC_ELEMENT);
omap_set_dma_dest_params(ep->lch, OMAP_DMA_PORT_EMIFF,
OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual);
- ep->dma_counter = omap_readw(DMA_DEST_LAST(ep->lch));
+ 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);
@@ -763,7 +788,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel)
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;
@@ -787,6 +812,11 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel)
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,
@@ -797,10 +827,15 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned 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));
+ /* 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)
@@ -856,7 +891,7 @@ static void dma_channel_release(struct omap_ep *ep)
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;
@@ -865,9 +900,13 @@ static void dma_channel_release(struct omap_ep *ep)
(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) {
finish_in_dma(ep, req, -ECONNRESET);
@@ -880,7 +919,7 @@ static void dma_channel_release(struct omap_ep *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 (UDC_RXDMA_CFG_REG & mask)
@@ -997,18 +1036,19 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, int gfp_flags)
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) {
@@ -1029,7 +1069,7 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, int gfp_flags)
(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;
@@ -1041,7 +1081,7 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, int gfp_flags)
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);
@@ -1140,7 +1180,7 @@ static int omap_ep_set_halt(struct usb_ep *_ep, int value)
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)) {
UDC_CTRL_REG = UDC_SET_FIFO_EN;
@@ -1238,6 +1278,8 @@ static int can_pullup(struct omap_udc *udc)
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
if (!cpu_is_omap15xx())
@@ -1382,7 +1424,7 @@ static void update_otg(struct omap_udc *udc)
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++;
@@ -1438,7 +1480,7 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src)
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;
@@ -1511,9 +1553,10 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src)
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
@@ -1529,11 +1572,11 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src)
/* 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
@@ -1549,23 +1592,28 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src)
/* 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)) {
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;
@@ -1573,11 +1621,11 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src)
/* 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)
@@ -1615,13 +1663,13 @@ ep0out_status_stage:
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;
}
@@ -1632,7 +1680,11 @@ delegate:
*/
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.
@@ -2013,7 +2065,7 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
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);
@@ -2021,8 +2073,8 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
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);
@@ -2035,8 +2087,8 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
if (status < 0) {
ERR("can't bind to transceiver\n");
driver->unbind (&udc->gadget);
- udc->gadget.dev.driver = 0;
- udc->driver = 0;
+ udc->gadget.dev.driver = NULL;
+ udc->driver = NULL;
goto done;
}
} else {
@@ -2071,7 +2123,7 @@ int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
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);
@@ -2080,9 +2132,8 @@ int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
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;
DBG("unregistered driver '%s'\n", driver->driver.name);
return status;
@@ -2178,14 +2229,14 @@ static int proc_otg_show(struct seq_file *s)
tmp = OTG_REV_REG;
trans = USB_TRANSCEIVER_CTRL_REG;
- seq_printf(s, "OTG rev %d.%d, transceiver_ctrl %03x\n",
+ seq_printf(s, "\nOTG rev %d.%d, transceiver_ctrl %05x\n",
tmp >> 4, tmp & 0xf, 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), trans & CONF_USB2_UNI_R),
trx_mode(USB1_TRX_MODE(tmp), trans & CONF_USB1_UNI_R),
- (USB0_TRX_MODE(tmp) == 0)
+ (USB0_TRX_MODE(tmp) == 0 && !cpu_is_omap1710())
? "internal"
: trx_mode(USB0_TRX_MODE(tmp), 1),
(tmp & OTG_IDLE_EN) ? " !otg" : "",
@@ -2235,6 +2286,7 @@ static int proc_otg_show(struct seq_file *s)
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 *_)
@@ -2378,7 +2430,7 @@ static int proc_udc_show(struct seq_file *s, void *_)
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 = {
@@ -2399,7 +2451,7 @@ static void create_proc_file(void)
static void remove_proc_file(void)
{
- remove_proc_entry(proc_filename, 0);
+ remove_proc_entry(proc_filename, NULL);
}
#else
@@ -2414,6 +2466,10 @@ static inline void remove_proc_file(void) {}
/* 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,
@@ -2505,7 +2561,7 @@ static void omap_udc_release(struct device *dev)
{
complete(udc->done);
kfree (udc);
- udc = 0;
+ udc = NULL;
}
static int __init
@@ -2577,23 +2633,33 @@ omap_udc_setup(struct platform_device *odev, struct otg_transceiver *xceiv)
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
@@ -2640,8 +2706,8 @@ static int __init omap_udc_probe(struct device *dev)
struct platform_device *odev = to_platform_device(dev);
int status = -ENODEV;
int hmc;
- struct otg_transceiver *xceiv = 0;
- const char *type = 0;
+ struct otg_transceiver *xceiv = NULL;
+ const char *type = NULL;
struct omap_usb_config *config = dev->platform_data;
/* NOTE: "knows" the order of the resources! */
@@ -2676,54 +2742,78 @@ static int __init omap_udc_probe(struct device *dev)
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)
+ 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:
- xceiv = otg_get_transceiver();
if (!xceiv) {
DBG("external transceiver not registered!\n");
- if (config->otg)
- goto cleanup0;
- type = "(unknown external)";
- } else
- type = xceiv->label;
- break;
- case 0: /* POWERUP DEFAULT == 0 */
- case 4:
- case 12:
- case 20:
- type = "INTEGRATED";
+ type = "unknown";
+ }
break;
case 21: /* internal loopback */
- type = "(loopback)";
+ type = "loopback";
break;
case 14: /* transceiverless */
- type = "(none)";
+ 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);
- return -ENODEV;
+ goto cleanup0;
}
}
- INFO("hmc mode %d, transceiver %s\n", hmc, type);
+ INFO("hmc mode %d, %s transceiver\n", hmc, type);
/* a "gadget" abstracts/virtualizes the controller */
status = omap_udc_setup(odev, 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);
@@ -2765,7 +2855,7 @@ cleanup2:
cleanup1:
kfree (udc);
- udc = 0;
+ udc = NULL;
cleanup0:
if (xceiv)
@@ -2788,7 +2878,7 @@ static int __exit omap_udc_remove(struct device *dev)
pullup_disable(udc);
if (udc->transceiver) {
put_device(udc->transceiver->dev);
- udc->transceiver = 0;
+ udc->transceiver = NULL;
}
UDC_SYSCON1_REG = 0;
@@ -2809,13 +2899,32 @@ static int __exit omap_udc_remove(struct device *dev)
return 0;
}
-static int omap_udc_suspend(struct device *dev, pm_message_t state, u32 level)
+/* 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, pm_message_t message, u32 level)
{
- if (level != 0)
+ u32 devstat;
+
+ if (level != SUSPEND_POWER_DOWN)
return 0;
+ devstat = UDC_DEVSTAT_REG;
+
+ /* 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);
+ }
- DBG("suspend, state %d\n", state);
- omap_pullup(&udc->gadget, 0);
udc->gadget.dev.power.power_state = PMSG_SUSPEND;
udc->gadget.dev.parent->power.power_state = PMSG_SUSPEND;
return 0;
@@ -2823,7 +2932,7 @@ static int omap_udc_suspend(struct device *dev, pm_message_t state, u32 level)
static int omap_udc_resume(struct device *dev, u32 level)
{
- if (level != 0)
+ if (level != RESUME_POWER_ON)
return 0;
DBG("resume + wakeup/SRP\n");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-14 12:13:40 +0000