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-rw-r--r--drivers/usb/gadget/omap_udc.c201
1 files changed, 121 insertions, 80 deletions
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index 24d81dcb7b4b..aa2d174a2521 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -36,9 +36,9 @@
#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/prefetch.h>
+#include <linux/io.h>
#include <asm/byteorder.h>
-#include <asm/io.h>
#include <asm/irq.h>
#include <asm/unaligned.h>
#include <asm/mach-types.h>
@@ -84,14 +84,14 @@
#ifdef USE_ISO
static unsigned fifo_mode = 3;
#else
-static unsigned fifo_mode = 0;
+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");
+module_param(fifo_mode, uint, 0);
+MODULE_PARM_DESC(fifo_mode, "endpoint configuration");
#ifdef USE_DMA
static bool use_dma = 1;
@@ -99,8 +99,8 @@ 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");
+module_param(use_dma, bool, 0);
+MODULE_PARM_DESC(use_dma, "enable/disable DMA");
#else /* !USE_DMA */
/* save a bit of code */
@@ -108,8 +108,8 @@ MODULE_PARM_DESC (use_dma, "enable/disable DMA");
#endif /* !USE_DMA */
-static const char driver_name [] = "omap_udc";
-static const char driver_desc [] = DRIVER_DESC;
+static const char driver_name[] = "omap_udc";
+static const char driver_desc[] = DRIVER_DESC;
/*-------------------------------------------------------------------------*/
@@ -247,7 +247,7 @@ static int omap_ep_disable(struct usb_ep *_ep)
spin_lock_irqsave(&ep->udc->lock, flags);
ep->ep.desc = NULL;
- nuke (ep, -ESHUTDOWN);
+ nuke(ep, -ESHUTDOWN);
ep->ep.maxpacket = ep->maxpacket;
ep->has_dma = 0;
omap_writew(UDC_SET_HALT, UDC_CTRL);
@@ -270,7 +270,7 @@ omap_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
req = kzalloc(sizeof(*req), gfp_flags);
if (req) {
req->req.dma = DMA_ADDR_INVALID;
- INIT_LIST_HEAD (&req->queue);
+ INIT_LIST_HEAD(&req->queue);
}
return &req->req;
}
@@ -281,7 +281,7 @@ omap_free_request(struct usb_ep *ep, struct usb_request *_req)
struct omap_req *req = container_of(_req, struct omap_req, req);
if (_req)
- kfree (req);
+ kfree(req);
}
/*-------------------------------------------------------------------------*/
@@ -361,10 +361,10 @@ write_packet(u8 *buf, struct omap_req *req, unsigned max)
return len;
}
-// FIXME change r/w fifo calling convention
+/* FIXME change r/w fifo calling convention */
-// return: 0 = still running, 1 = completed, negative = errno
+/* return: 0 = still running, 1 = completed, negative = errno */
static int write_fifo(struct omap_ep *ep, struct omap_req *req)
{
u8 *buf;
@@ -426,7 +426,7 @@ read_packet(u8 *buf, struct omap_req *req, unsigned avail)
return len;
}
-// return: 0 = still running, 1 = queue empty, negative = errno
+/* return: 0 = still running, 1 = queue empty, negative = errno */
static int read_fifo(struct omap_ep *ep, struct omap_req *req)
{
u8 *buf;
@@ -662,7 +662,7 @@ static void dma_irq(struct omap_udc *udc, u16 irq_src)
}
omap_writew(UDC_TXN_DONE, UDC_IRQ_SRC);
- if (!list_empty (&ep->queue)) {
+ if (!list_empty(&ep->queue)) {
req = container_of(ep->queue.next,
struct omap_req, queue);
next_in_dma(ep, req);
@@ -681,7 +681,7 @@ static void dma_irq(struct omap_udc *udc, u16 irq_src)
}
omap_writew(UDC_RXN_EOT, UDC_IRQ_SRC);
- if (!list_empty (&ep->queue)) {
+ if (!list_empty(&ep->queue)) {
req = container_of(ep->queue.next,
struct omap_req, queue);
next_out_dma(ep, req);
@@ -954,7 +954,7 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
int is_in;
if (ep->bEndpointAddress == 0) {
- if (!udc->ep0_pending || !list_empty (&ep->queue)) {
+ if (!udc->ep0_pending || !list_empty(&ep->queue)) {
spin_unlock_irqrestore(&udc->lock, flags);
return -EL2HLT;
}
@@ -981,7 +981,8 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
* 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_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);
@@ -993,7 +994,8 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
/* non-empty DATA stage */
} else if (is_in) {
- omap_writew(UDC_EP_SEL | UDC_EP_DIR, UDC_EP_NUM);
+ omap_writew(UDC_EP_SEL | UDC_EP_DIR,
+ UDC_EP_NUM);
} else {
if (udc->ep0_setup)
goto irq_wait;
@@ -1041,7 +1043,7 @@ static int omap_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
spin_lock_irqsave(&ep->udc->lock, flags);
/* make sure it's actually queued on this endpoint */
- list_for_each_entry (req, &ep->queue, queue) {
+ list_for_each_entry(req, &ep->queue, queue) {
if (&req->req == _req)
break;
}
@@ -1148,8 +1150,8 @@ static struct usb_ep_ops omap_ep_ops = {
.dequeue = omap_ep_dequeue,
.set_halt = omap_ep_set_halt,
- // fifo_status ... report bytes in fifo
- // fifo_flush ... flush fifo
+ /* fifo_status ... report bytes in fifo */
+ /* fifo_flush ... flush fifo */
};
/*-------------------------------------------------------------------------*/
@@ -1379,7 +1381,7 @@ static void udc_quiesce(struct omap_udc *udc)
udc->gadget.speed = USB_SPEED_UNKNOWN;
nuke(&udc->ep[0], -ESHUTDOWN);
- list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list)
+ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list)
nuke(ep, -ESHUTDOWN);
}
@@ -1495,7 +1497,8 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src)
/* read next OUT packet of request, maybe
* reactiviting the fifo; stall on errors.
*/
- if (!req || (stat = read_fifo(ep0, req)) < 0) {
+ stat = read_fifo(ep0, req);
+ if (!req || stat < 0) {
omap_writew(UDC_STALL_CMD, UDC_SYSCON2);
udc->ep0_pending = 0;
stat = 0;
@@ -1628,7 +1631,7 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src)
/* 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);
+ DBG("%s host set_halt, NYET\n", ep->name);
goto do_stall;
}
use_ep(ep, 0);
@@ -1719,7 +1722,7 @@ delegate:
*/
udc->ep0_setup = 1;
spin_unlock(&udc->lock);
- status = udc->driver->setup (&udc->gadget, &u.r);
+ status = udc->driver->setup(&udc->gadget, &u.r);
spin_lock(&udc->lock);
udc->ep0_setup = 0;
}
@@ -1764,7 +1767,7 @@ static void devstate_irq(struct omap_udc *udc, u16 irq_src)
VDBG("connect\n");
if (!udc->transceiver)
pullup_enable(udc);
- // if (driver->connect) call it
+ /* if (driver->connect) call it */
} else if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
udc->gadget.speed = USB_SPEED_UNKNOWN;
if (!udc->transceiver)
@@ -1796,7 +1799,7 @@ static void devstate_irq(struct omap_udc *udc, u16 irq_src)
}
if (change & UDC_SUS) {
if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
- // FIXME tell isp1301 to suspend/resume (?)
+ /* FIXME tell isp1301 to suspend/resume (?) */
if (devstat & UDC_SUS) {
VDBG("suspend\n");
update_otg(udc);
@@ -1999,7 +2002,7 @@ static irqreturn_t omap_udc_iso_irq(int irq, void *_dev)
spin_lock_irqsave(&udc->lock, flags);
/* handle all non-DMA ISO transfers */
- list_for_each_entry (ep, &udc->iso, iso) {
+ list_for_each_entry(ep, &udc->iso, iso) {
u16 stat;
struct omap_req *req;
@@ -2058,11 +2061,11 @@ static irqreturn_t omap_udc_iso_irq(int irq, void *_dev)
static inline int machine_without_vbus_sense(void)
{
- return (machine_is_omap_innovator()
+ return machine_is_omap_innovator()
|| machine_is_omap_osk()
|| machine_is_sx1()
- || cpu_is_omap7xx() /* No known omap7xx boards with vbus sense */
- );
+ /* No known omap7xx boards with vbus sense */
+ || cpu_is_omap7xx();
}
static int omap_udc_start(struct usb_gadget_driver *driver,
@@ -2076,7 +2079,7 @@ static int omap_udc_start(struct usb_gadget_driver *driver,
if (!udc)
return -ENODEV;
if (!driver
- // FIXME if otg, check: driver->is_otg
+ /* FIXME if otg, check: driver->is_otg */
|| driver->max_speed < USB_SPEED_FULL
|| !bind || !driver->setup)
return -EINVAL;
@@ -2088,7 +2091,7 @@ static int omap_udc_start(struct usb_gadget_driver *driver,
}
/* reset state */
- list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) {
+ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
ep->irqs = 0;
if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC)
continue;
@@ -2126,7 +2129,7 @@ static int omap_udc_start(struct usb_gadget_driver *driver,
if (status < 0) {
ERR("can't bind to transceiver\n");
if (driver->unbind) {
- driver->unbind (&udc->gadget);
+ driver->unbind(&udc->gadget);
udc->gadget.dev.driver = NULL;
udc->driver = NULL;
}
@@ -2134,9 +2137,9 @@ static int omap_udc_start(struct usb_gadget_driver *driver,
}
} else {
if (can_pullup(udc))
- pullup_enable (udc);
+ pullup_enable(udc);
else
- pullup_disable (udc);
+ pullup_disable(udc);
}
/* boards that don't have VBUS sensing can't autogate 48MHz;
@@ -2195,7 +2198,7 @@ static int omap_udc_stop(struct usb_gadget_driver *driver)
static const char proc_filename[] = "driver/udc";
#define FOURBITS "%s%s%s%s"
-#define EIGHTBITS FOURBITS FOURBITS
+#define EIGHTBITS "%s%s%s%s%s%s%s%s"
static void proc_ep_show(struct seq_file *s, struct omap_ep *ep)
{
@@ -2217,12 +2220,21 @@ static void proc_ep_show(struct seq_file *s, struct omap_ep *ep)
"\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;}),
+ ({ 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 " : "",
@@ -2238,10 +2250,10 @@ static void proc_ep_show(struct seq_file *s, struct omap_ep *ep)
(stat_flg & UDC_NON_ISO_FIFO_EMPTY) ? "fifo_empty " : "",
(stat_flg & UDC_NON_ISO_FIFO_FULL) ? "fifo_full " : "");
- if (list_empty (&ep->queue))
+ 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]) {
@@ -2259,11 +2271,16 @@ static void proc_ep_show(struct seq_file *s, struct omap_ep *ep)
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";
+ case 0:
+ return enabled ? "*6wire" : "unused";
+ case 1:
+ return "4wire";
+ case 2:
+ return "3wire";
+ case 3:
+ return "6wire";
+ default:
+ return "unknown";
}
}
@@ -2295,7 +2312,7 @@ static int proc_otg_show(struct seq_file *s)
" b_ase_brst=%d hmc=%d\n", tmp,
(tmp & OTG_EN) ? " otg_en" : "",
(tmp & USBX_SYNCHRO) ? " synchro" : "",
- // much more SRP stuff
+ /* much more SRP stuff */
(tmp & SRP_DATA) ? " srp_data" : "",
(tmp & SRP_VBUS) ? " srp_vbus" : "",
(tmp & OTG_PADEN) ? " otg_paden" : "",
@@ -2383,7 +2400,7 @@ static int proc_udc_show(struct seq_file *s, void *_)
(tmp & UDC_SELF_PWR) ? " self_pwr" : "",
(tmp & UDC_SOFF_DIS) ? " soff_dis" : "",
(tmp & UDC_PULLUP_EN) ? " PULLUP" : "");
- // syscon2 is write-only
+ /* syscon2 is write-only */
/* UDC controller registers */
if (!(tmp & UDC_PULLUP_EN)) {
@@ -2467,7 +2484,7 @@ static int proc_udc_show(struct seq_file *s, void *_)
if (tmp & UDC_ATT) {
proc_ep_show(s, &udc->ep[0]);
if (tmp & UDC_ADD) {
- list_for_each_entry (ep, &udc->gadget.ep_list,
+ list_for_each_entry(ep, &udc->gadget.ep_list,
ep.ep_list) {
if (ep->ep.desc)
proc_ep_show(s, ep);
@@ -2536,14 +2553,29 @@ omap_ep_setup(char *name, u8 addr, u8 type,
/* 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();
+ 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;
@@ -2556,11 +2588,20 @@ omap_ep_setup(char *name, u8 addr, u8 type,
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();
+ 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;
@@ -2600,7 +2641,7 @@ omap_ep_setup(char *name, u8 addr, u8 type,
ep->ep.name = ep->name;
ep->ep.ops = &omap_ep_ops;
ep->ep.maxpacket = ep->maxpacket = maxp;
- list_add_tail (&ep->ep.ep_list, &udc->gadget.ep_list);
+ list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
return buf;
}
@@ -2608,7 +2649,7 @@ omap_ep_setup(char *name, u8 addr, u8 type,
static void omap_udc_release(struct device *dev)
{
complete(udc->done);
- kfree (udc);
+ kfree(udc);
udc = NULL;
}
@@ -2626,13 +2667,13 @@ omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv)
omap_writew(0, UDC_TXDMA_CFG);
/* UDC_PULLUP_EN gates the chip clock */
- // OTG_SYSCON_1 |= DEV_IDLE_EN;
+ /* OTG_SYSCON_1 |= DEV_IDLE_EN; */
udc = kzalloc(sizeof(*udc), GFP_KERNEL);
if (!udc)
return -ENOMEM;
- spin_lock_init (&udc->lock);
+ spin_lock_init(&udc->lock);
udc->gadget.ops = &omap_gadget_ops;
udc->gadget.ep0 = &udc->ep[0].ep;
@@ -2662,13 +2703,13 @@ omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv)
omap_writew(0, UDC_EP_TX(tmp));
}
-#define OMAP_BULK_EP(name,addr) \
+#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) \
+#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) \
+#define OMAP_ISO_EP(name, addr, maxp) \
buf = omap_ep_setup(name "-iso", addr, \
USB_ENDPOINT_XFER_ISOC, buf, maxp, 1);
@@ -2869,11 +2910,11 @@ bad_on_1710:
/* a "gadget" abstracts/virtualizes the controller */
status = omap_udc_setup(pdev, xceiv);
- if (status) {
+ if (status)
goto cleanup0;
- }
+
xceiv = NULL;
- // "udc" is now valid
+ /* "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);
@@ -2887,7 +2928,7 @@ bad_on_1710:
/* USB general purpose IRQ: ep0, state changes, dma, etc */
status = request_irq(pdev->resource[1].start, omap_udc_irq,
- IRQF_SAMPLE_RANDOM, driver_name, udc);
+ 0, driver_name, udc);
if (status != 0) {
ERR("can't get irq %d, err %d\n",
(int) pdev->resource[1].start, status);
@@ -2896,7 +2937,7 @@ bad_on_1710:
/* USB "non-iso" IRQ (PIO for all but ep0) */
status = request_irq(pdev->resource[2].start, omap_udc_pio_irq,
- IRQF_SAMPLE_RANDOM, "omap_udc pio", udc);
+ 0, "omap_udc pio", udc);
if (status != 0) {
ERR("can't get irq %d, err %d\n",
(int) pdev->resource[2].start, status);
@@ -2939,7 +2980,7 @@ cleanup2:
free_irq(pdev->resource[1].start, udc);
cleanup1:
- kfree (udc);
+ kfree(udc);
udc = NULL;
cleanup0:
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 19:38:36 +0100