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path: root/drivers/usb/gadget/zero.c
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Diffstat (limited to 'drivers/usb/gadget/zero.c')
-rw-r--r--drivers/usb/gadget/zero.c370
1 files changed, 175 insertions, 195 deletions
diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c
index d3d4f4048e6c..fce4924dbbe8 100644
--- a/drivers/usb/gadget/zero.c
+++ b/drivers/usb/gadget/zero.c
@@ -23,9 +23,7 @@
/*
* Gadget Zero only needs two bulk endpoints, and is an example of how you
* can write a hardware-agnostic gadget driver running inside a USB device.
- *
- * Hardware details are visible (see CONFIG_USB_ZERO_* below) but don't
- * affect most of the driver.
+ * Some hardware details are visible, but don't affect most of the driver.
*
* Use it with the Linux host/master side "usbtest" driver to get a basic
* functional test of your device-side usb stack, or with "usb-skeleton".
@@ -37,6 +35,7 @@
* buflen=N default N=4096, buffer size used
* qlen=N default N=32, how many buffers in the loopback queue
* loopdefault default false, list loopback config first
+ * autoresume=N default N=0, seconds before triggering remote wakeup
*
* Many drivers will only have one configuration, letting them be much
* simpler if they also don't support high speed operation (like this
@@ -62,13 +61,13 @@
/*-------------------------------------------------------------------------*/
-#define DRIVER_VERSION "Lughnasadh, 2007"
+#define DRIVER_VERSION "Earth Day 2008"
-static const char shortname [] = "zero";
-static const char longname [] = "Gadget Zero";
+static const char shortname[] = "zero";
+static const char longname[] = "Gadget Zero";
-static const char source_sink [] = "source and sink data";
-static const char loopback [] = "loop input to output";
+static const char source_sink[] = "source and sink data";
+static const char loopback[] = "loop input to output";
/*-------------------------------------------------------------------------*/
@@ -120,16 +119,16 @@ static unsigned buflen = 4096;
static unsigned qlen = 32;
static unsigned pattern = 0;
-module_param (buflen, uint, S_IRUGO);
-module_param (qlen, uint, S_IRUGO);
-module_param (pattern, uint, S_IRUGO|S_IWUSR);
+module_param(buflen, uint, S_IRUGO);
+module_param(qlen, uint, S_IRUGO);
+module_param(pattern, uint, S_IRUGO|S_IWUSR);
/*
* if it's nonzero, autoresume says how many seconds to wait
* before trying to wake up the host after suspend.
*/
static unsigned autoresume = 0;
-module_param (autoresume, uint, 0);
+module_param(autoresume, uint, 0);
/*
* Normally the "loopback" configuration is second (index 1) so
@@ -138,8 +137,7 @@ module_param (autoresume, uint, 0);
* Or controllers (like superh) that only support one config.
*/
static int loopdefault = 0;
-
-module_param (loopdefault, bool, S_IRUGO|S_IWUSR);
+module_param(loopdefault, bool, S_IRUGO|S_IWUSR);
/*-------------------------------------------------------------------------*/
@@ -176,24 +174,22 @@ module_param (loopdefault, bool, S_IRUGO|S_IWUSR);
#define CONFIG_SOURCE_SINK 3
#define CONFIG_LOOPBACK 2
-static struct usb_device_descriptor
-device_desc = {
+static struct usb_device_descriptor device_desc = {
.bLength = sizeof device_desc,
.bDescriptorType = USB_DT_DEVICE,
- .bcdUSB = __constant_cpu_to_le16 (0x0200),
+ .bcdUSB = __constant_cpu_to_le16(0x0200),
.bDeviceClass = USB_CLASS_VENDOR_SPEC,
- .idVendor = __constant_cpu_to_le16 (DRIVER_VENDOR_NUM),
- .idProduct = __constant_cpu_to_le16 (DRIVER_PRODUCT_NUM),
+ .idVendor = __constant_cpu_to_le16(DRIVER_VENDOR_NUM),
+ .idProduct = __constant_cpu_to_le16(DRIVER_PRODUCT_NUM),
.iManufacturer = STRING_MANUFACTURER,
.iProduct = STRING_PRODUCT,
.iSerialNumber = STRING_SERIAL,
.bNumConfigurations = 2,
};
-static struct usb_config_descriptor
-source_sink_config = {
+static struct usb_config_descriptor source_sink_config = {
.bLength = sizeof source_sink_config,
.bDescriptorType = USB_DT_CONFIG,
@@ -205,8 +201,7 @@ source_sink_config = {
.bMaxPower = 1, /* self-powered */
};
-static struct usb_config_descriptor
-loopback_config = {
+static struct usb_config_descriptor loopback_config = {
.bLength = sizeof loopback_config,
.bDescriptorType = USB_DT_CONFIG,
@@ -218,8 +213,7 @@ loopback_config = {
.bMaxPower = 1, /* self-powered */
};
-static struct usb_otg_descriptor
-otg_descriptor = {
+static struct usb_otg_descriptor otg_descriptor = {
.bLength = sizeof otg_descriptor,
.bDescriptorType = USB_DT_OTG,
@@ -228,8 +222,7 @@ otg_descriptor = {
/* one interface in each configuration */
-static const struct usb_interface_descriptor
-source_sink_intf = {
+static const struct usb_interface_descriptor source_sink_intf = {
.bLength = sizeof source_sink_intf,
.bDescriptorType = USB_DT_INTERFACE,
@@ -238,8 +231,7 @@ source_sink_intf = {
.iInterface = STRING_SOURCE_SINK,
};
-static const struct usb_interface_descriptor
-loopback_intf = {
+static const struct usb_interface_descriptor loopback_intf = {
.bLength = sizeof loopback_intf,
.bDescriptorType = USB_DT_INTERFACE,
@@ -250,8 +242,7 @@ loopback_intf = {
/* two full speed bulk endpoints; their use is config-dependent */
-static struct usb_endpoint_descriptor
-fs_source_desc = {
+static struct usb_endpoint_descriptor fs_source_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -259,8 +250,7 @@ fs_source_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
};
-static struct usb_endpoint_descriptor
-fs_sink_desc = {
+static struct usb_endpoint_descriptor fs_sink_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -268,7 +258,7 @@ fs_sink_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
};
-static const struct usb_descriptor_header *fs_source_sink_function [] = {
+static const struct usb_descriptor_header *fs_source_sink_function[] = {
(struct usb_descriptor_header *) &otg_descriptor,
(struct usb_descriptor_header *) &source_sink_intf,
(struct usb_descriptor_header *) &fs_sink_desc,
@@ -276,7 +266,7 @@ static const struct usb_descriptor_header *fs_source_sink_function [] = {
NULL,
};
-static const struct usb_descriptor_header *fs_loopback_function [] = {
+static const struct usb_descriptor_header *fs_loopback_function[] = {
(struct usb_descriptor_header *) &otg_descriptor,
(struct usb_descriptor_header *) &loopback_intf,
(struct usb_descriptor_header *) &fs_sink_desc,
@@ -293,36 +283,33 @@ static const struct usb_descriptor_header *fs_loopback_function [] = {
* for the config descriptor.
*/
-static struct usb_endpoint_descriptor
-hs_source_desc = {
+static struct usb_endpoint_descriptor hs_source_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
- .wMaxPacketSize = __constant_cpu_to_le16 (512),
+ .wMaxPacketSize = __constant_cpu_to_le16(512),
};
-static struct usb_endpoint_descriptor
-hs_sink_desc = {
+static struct usb_endpoint_descriptor hs_sink_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
- .wMaxPacketSize = __constant_cpu_to_le16 (512),
+ .wMaxPacketSize = __constant_cpu_to_le16(512),
};
-static struct usb_qualifier_descriptor
-dev_qualifier = {
+static struct usb_qualifier_descriptor dev_qualifier = {
.bLength = sizeof dev_qualifier,
.bDescriptorType = USB_DT_DEVICE_QUALIFIER,
- .bcdUSB = __constant_cpu_to_le16 (0x0200),
+ .bcdUSB = __constant_cpu_to_le16(0x0200),
.bDeviceClass = USB_CLASS_VENDOR_SPEC,
.bNumConfigurations = 2,
};
-static const struct usb_descriptor_header *hs_source_sink_function [] = {
+static const struct usb_descriptor_header *hs_source_sink_function[] = {
(struct usb_descriptor_header *) &otg_descriptor,
(struct usb_descriptor_header *) &source_sink_intf,
(struct usb_descriptor_header *) &hs_source_desc,
@@ -330,7 +317,7 @@ static const struct usb_descriptor_header *hs_source_sink_function [] = {
NULL,
};
-static const struct usb_descriptor_header *hs_loopback_function [] = {
+static const struct usb_descriptor_header *hs_loopback_function[] = {
(struct usb_descriptor_header *) &otg_descriptor,
(struct usb_descriptor_header *) &loopback_intf,
(struct usb_descriptor_header *) &hs_source_desc,
@@ -355,7 +342,7 @@ static char serial[] = "0123456789.0123456789.0123456789";
/* static strings, in UTF-8 */
-static struct usb_string strings [] = {
+static struct usb_string strings[] = {
{ STRING_MANUFACTURER, manufacturer, },
{ STRING_PRODUCT, longname, },
{ STRING_SERIAL, serial, },
@@ -364,7 +351,7 @@ static struct usb_string strings [] = {
{ } /* end of list */
};
-static struct usb_gadget_strings stringtab = {
+static struct usb_gadget_strings stringtab = {
.language = 0x0409, /* en-us */
.strings = strings,
};
@@ -387,8 +374,7 @@ static struct usb_gadget_strings stringtab = {
* high bandwidth modes at high speed. (Maybe work like Intel's test
* device?)
*/
-static int
-config_buf (struct usb_gadget *gadget,
+static int config_buf(struct usb_gadget *gadget,
u8 *buf, u8 type, unsigned index)
{
int is_source_sink;
@@ -419,7 +405,7 @@ config_buf (struct usb_gadget *gadget,
if (!gadget_is_otg(gadget))
function++;
- len = usb_gadget_config_buf (is_source_sink
+ len = usb_gadget_config_buf(is_source_sink
? &source_sink_config
: &loopback_config,
buf, USB_BUFSIZ, function);
@@ -431,27 +417,26 @@ config_buf (struct usb_gadget *gadget,
/*-------------------------------------------------------------------------*/
-static struct usb_request *
-alloc_ep_req (struct usb_ep *ep, unsigned length)
+static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length)
{
struct usb_request *req;
- req = usb_ep_alloc_request (ep, GFP_ATOMIC);
+ req = usb_ep_alloc_request(ep, GFP_ATOMIC);
if (req) {
req->length = length;
req->buf = kmalloc(length, GFP_ATOMIC);
if (!req->buf) {
- usb_ep_free_request (ep, req);
+ usb_ep_free_request(ep, req);
req = NULL;
}
}
return req;
}
-static void free_ep_req (struct usb_ep *ep, struct usb_request *req)
+static void free_ep_req(struct usb_ep *ep, struct usb_request *req)
{
kfree(req->buf);
- usb_ep_free_request (ep, req);
+ usb_ep_free_request(ep, req);
}
/*-------------------------------------------------------------------------*/
@@ -472,7 +457,7 @@ static void free_ep_req (struct usb_ep *ep, struct usb_request *req)
/* optionally require specific source/sink data patterns */
static int
-check_read_data (
+check_read_data(
struct zero_dev *dev,
struct usb_ep *ep,
struct usb_request *req
@@ -498,8 +483,8 @@ check_read_data (
continue;
break;
}
- ERROR (dev, "bad OUT byte, buf [%d] = %d\n", i, *buf);
- usb_ep_set_halt (ep);
+ ERROR(dev, "bad OUT byte, buf[%d] = %d\n", i, *buf);
+ usb_ep_set_halt(ep);
return -EINVAL;
}
return 0;
@@ -512,7 +497,7 @@ static void reinit_write_data(struct usb_ep *ep, struct usb_request *req)
switch (pattern) {
case 0:
- memset (req->buf, 0, req->length);
+ memset(req->buf, 0, req->length);
break;
case 1:
for (i = 0; i < req->length; i++)
@@ -525,7 +510,7 @@ static void reinit_write_data(struct usb_ep *ep, struct usb_request *req)
* irq delay between end of one request and start of the next.
* that prevents using hardware dma queues.
*/
-static void source_sink_complete (struct usb_ep *ep, struct usb_request *req)
+static void source_sink_complete(struct usb_ep *ep, struct usb_request *req)
{
struct zero_dev *dev = ep->driver_data;
int status = req->status;
@@ -534,8 +519,8 @@ static void source_sink_complete (struct usb_ep *ep, struct usb_request *req)
case 0: /* normal completion? */
if (ep == dev->out_ep) {
- check_read_data (dev, ep, req);
- memset (req->buf, 0x55, req->length);
+ check_read_data(dev, ep, req);
+ memset(req->buf, 0x55, req->length);
} else
reinit_write_data(ep, req);
break;
@@ -544,11 +529,11 @@ static void source_sink_complete (struct usb_ep *ep, struct usb_request *req)
case -ECONNABORTED: /* hardware forced ep reset */
case -ECONNRESET: /* request dequeued */
case -ESHUTDOWN: /* disconnect from host */
- VDBG (dev, "%s gone (%d), %d/%d\n", ep->name, status,
+ VDBG(dev, "%s gone (%d), %d/%d\n", ep->name, status,
req->actual, req->length);
if (ep == dev->out_ep)
- check_read_data (dev, ep, req);
- free_ep_req (ep, req);
+ check_read_data(dev, ep, req);
+ free_ep_req(ep, req);
return;
case -EOVERFLOW: /* buffer overrun on read means that
@@ -557,18 +542,18 @@ static void source_sink_complete (struct usb_ep *ep, struct usb_request *req)
*/
default:
#if 1
- DBG (dev, "%s complete --> %d, %d/%d\n", ep->name,
+ DBG(dev, "%s complete --> %d, %d/%d\n", ep->name,
status, req->actual, req->length);
#endif
case -EREMOTEIO: /* short read */
break;
}
- status = usb_ep_queue (ep, req, GFP_ATOMIC);
+ status = usb_ep_queue(ep, req, GFP_ATOMIC);
if (status) {
- ERROR (dev, "kill %s: resubmit %d bytes --> %d\n",
+ ERROR(dev, "kill %s: resubmit %d bytes --> %d\n",
ep->name, req->length, status);
- usb_ep_set_halt (ep);
+ usb_ep_set_halt(ep);
/* FIXME recover later ... somehow */
}
}
@@ -578,24 +563,24 @@ static struct usb_request *source_sink_start_ep(struct usb_ep *ep)
struct usb_request *req;
int status;
- req = alloc_ep_req (ep, buflen);
+ req = alloc_ep_req(ep, buflen);
if (!req)
return NULL;
- memset (req->buf, 0, req->length);
+ memset(req->buf, 0, req->length);
req->complete = source_sink_complete;
- if (strcmp (ep->name, EP_IN_NAME) == 0)
+ if (strcmp(ep->name, EP_IN_NAME) == 0)
reinit_write_data(ep, req);
else
- memset (req->buf, 0x55, req->length);
+ memset(req->buf, 0x55, req->length);
status = usb_ep_queue(ep, req, GFP_ATOMIC);
if (status) {
struct zero_dev *dev = ep->driver_data;
- ERROR (dev, "start %s --> %d\n", ep->name, status);
- free_ep_req (ep, req);
+ ERROR(dev, "start %s --> %d\n", ep->name, status);
+ free_ep_req(ep, req);
req = NULL;
}
@@ -608,34 +593,34 @@ static int set_source_sink_config(struct zero_dev *dev)
struct usb_ep *ep;
struct usb_gadget *gadget = dev->gadget;
- gadget_for_each_ep (ep, gadget) {
+ gadget_for_each_ep(ep, gadget) {
const struct usb_endpoint_descriptor *d;
/* one endpoint writes (sources) zeroes in (to the host) */
- if (strcmp (ep->name, EP_IN_NAME) == 0) {
- d = ep_desc (gadget, &hs_source_desc, &fs_source_desc);
- result = usb_ep_enable (ep, d);
+ if (strcmp(ep->name, EP_IN_NAME) == 0) {
+ d = ep_desc(gadget, &hs_source_desc, &fs_source_desc);
+ result = usb_ep_enable(ep, d);
if (result == 0) {
ep->driver_data = dev;
if (source_sink_start_ep(ep) != NULL) {
dev->in_ep = ep;
continue;
}
- usb_ep_disable (ep);
+ usb_ep_disable(ep);
result = -EIO;
}
/* one endpoint reads (sinks) anything out (from the host) */
- } else if (strcmp (ep->name, EP_OUT_NAME) == 0) {
- d = ep_desc (gadget, &hs_sink_desc, &fs_sink_desc);
- result = usb_ep_enable (ep, d);
+ } else if (strcmp(ep->name, EP_OUT_NAME) == 0) {
+ d = ep_desc(gadget, &hs_sink_desc, &fs_sink_desc);
+ result = usb_ep_enable(ep, d);
if (result == 0) {
ep->driver_data = dev;
if (source_sink_start_ep(ep) != NULL) {
dev->out_ep = ep;
continue;
}
- usb_ep_disable (ep);
+ usb_ep_disable(ep);
result = -EIO;
}
@@ -644,11 +629,11 @@ static int set_source_sink_config(struct zero_dev *dev)
continue;
/* stop on error */
- ERROR (dev, "can't start %s, result %d\n", ep->name, result);
+ ERROR(dev, "can't start %s, result %d\n", ep->name, result);
break;
}
if (result == 0)
- DBG (dev, "buflen %d\n", buflen);
+ DBG(dev, "buflen %d\n", buflen);
/* caller is responsible for cleanup on error */
return result;
@@ -656,7 +641,7 @@ static int set_source_sink_config(struct zero_dev *dev)
/*-------------------------------------------------------------------------*/
-static void loopback_complete (struct usb_ep *ep, struct usb_request *req)
+static void loopback_complete(struct usb_ep *ep, struct usb_request *req)
{
struct zero_dev *dev = ep->driver_data;
int status = req->status;
@@ -668,19 +653,19 @@ static void loopback_complete (struct usb_ep *ep, struct usb_request *req)
/* loop this OUT packet back IN to the host */
req->zero = (req->actual < req->length);
req->length = req->actual;
- status = usb_ep_queue (dev->in_ep, req, GFP_ATOMIC);
+ status = usb_ep_queue(dev->in_ep, req, GFP_ATOMIC);
if (status == 0)
return;
/* "should never get here" */
- ERROR (dev, "can't loop %s to %s: %d\n",
+ ERROR(dev, "can't loop %s to %s: %d\n",
ep->name, dev->in_ep->name,
status);
}
/* queue the buffer for some later OUT packet */
req->length = buflen;
- status = usb_ep_queue (dev->out_ep, req, GFP_ATOMIC);
+ status = usb_ep_queue(dev->out_ep, req, GFP_ATOMIC);
if (status == 0)
return;
@@ -688,7 +673,7 @@ static void loopback_complete (struct usb_ep *ep, struct usb_request *req)
/* FALLTHROUGH */
default:
- ERROR (dev, "%s loop complete --> %d, %d/%d\n", ep->name,
+ ERROR(dev, "%s loop complete --> %d, %d/%d\n", ep->name,
status, req->actual, req->length);
/* FALLTHROUGH */
@@ -700,7 +685,7 @@ static void loopback_complete (struct usb_ep *ep, struct usb_request *req)
case -ECONNABORTED: /* hardware forced ep reset */
case -ECONNRESET: /* request dequeued */
case -ESHUTDOWN: /* disconnect from host */
- free_ep_req (ep, req);
+ free_ep_req(ep, req);
return;
}
}
@@ -711,13 +696,13 @@ static int set_loopback_config(struct zero_dev *dev)
struct usb_ep *ep;
struct usb_gadget *gadget = dev->gadget;
- gadget_for_each_ep (ep, gadget) {
+ gadget_for_each_ep(ep, gadget) {
const struct usb_endpoint_descriptor *d;
/* one endpoint writes data back IN to the host */
- if (strcmp (ep->name, EP_IN_NAME) == 0) {
- d = ep_desc (gadget, &hs_source_desc, &fs_source_desc);
- result = usb_ep_enable (ep, d);
+ if (strcmp(ep->name, EP_IN_NAME) == 0) {
+ d = ep_desc(gadget, &hs_source_desc, &fs_source_desc);
+ result = usb_ep_enable(ep, d);
if (result == 0) {
ep->driver_data = dev;
dev->in_ep = ep;
@@ -725,9 +710,9 @@ static int set_loopback_config(struct zero_dev *dev)
}
/* one endpoint just reads OUT packets */
- } else if (strcmp (ep->name, EP_OUT_NAME) == 0) {
- d = ep_desc (gadget, &hs_sink_desc, &fs_sink_desc);
- result = usb_ep_enable (ep, d);
+ } else if (strcmp(ep->name, EP_OUT_NAME) == 0) {
+ d = ep_desc(gadget, &hs_sink_desc, &fs_sink_desc);
+ result = usb_ep_enable(ep, d);
if (result == 0) {
ep->driver_data = dev;
dev->out_ep = ep;
@@ -739,7 +724,7 @@ static int set_loopback_config(struct zero_dev *dev)
continue;
/* stop on error */
- ERROR (dev, "can't enable %s, result %d\n", ep->name, result);
+ ERROR(dev, "can't enable %s, result %d\n", ep->name, result);
break;
}
@@ -753,19 +738,19 @@ static int set_loopback_config(struct zero_dev *dev)
ep = dev->out_ep;
for (i = 0; i < qlen && result == 0; i++) {
- req = alloc_ep_req (ep, buflen);
+ req = alloc_ep_req(ep, buflen);
if (req) {
req->complete = loopback_complete;
- result = usb_ep_queue (ep, req, GFP_ATOMIC);
+ result = usb_ep_queue(ep, req, GFP_ATOMIC);
if (result)
- DBG (dev, "%s queue req --> %d\n",
+ DBG(dev, "%s queue req --> %d\n",
ep->name, result);
} else
result = -ENOMEM;
}
}
if (result == 0)
- DBG (dev, "qlen %d, buflen %d\n", qlen, buflen);
+ DBG(dev, "qlen %d, buflen %d\n", qlen, buflen);
/* caller is responsible for cleanup on error */
return result;
@@ -773,26 +758,26 @@ static int set_loopback_config(struct zero_dev *dev)
/*-------------------------------------------------------------------------*/
-static void zero_reset_config (struct zero_dev *dev)
+static void zero_reset_config(struct zero_dev *dev)
{
if (dev->config == 0)
return;
- DBG (dev, "reset config\n");
+ DBG(dev, "reset config\n");
/* just disable endpoints, forcing completion of pending i/o.
* all our completion handlers free their requests in this case.
*/
if (dev->in_ep) {
- usb_ep_disable (dev->in_ep);
+ usb_ep_disable(dev->in_ep);
dev->in_ep = NULL;
}
if (dev->out_ep) {
- usb_ep_disable (dev->out_ep);
+ usb_ep_disable(dev->out_ep);
dev->out_ep = NULL;
}
dev->config = 0;
- del_timer (&dev->resume);
+ del_timer(&dev->resume);
}
/* change our operational config. this code must agree with the code
@@ -813,12 +798,12 @@ static int zero_set_config(struct zero_dev *dev, unsigned number)
if (number == dev->config)
return 0;
- if (gadget_is_sa1100 (gadget) && dev->config) {
+ if (gadget_is_sa1100(gadget) && dev->config) {
/* tx fifo is full, but we can't clear it...*/
ERROR(dev, "can't change configurations\n");
return -ESPIPE;
}
- zero_reset_config (dev);
+ zero_reset_config(dev);
switch (number) {
case CONFIG_SOURCE_SINK:
@@ -837,7 +822,7 @@ static int zero_set_config(struct zero_dev *dev, unsigned number)
if (!result && (!dev->in_ep || !dev->out_ep))
result = -ENODEV;
if (result)
- zero_reset_config (dev);
+ zero_reset_config(dev);
else {
char *speed;
@@ -849,7 +834,7 @@ static int zero_set_config(struct zero_dev *dev, unsigned number)
}
dev->config = number;
- INFO (dev, "%s speed config #%d: %s\n", speed, number,
+ INFO(dev, "%s speed config #%d: %s\n", speed, number,
(number == CONFIG_SOURCE_SINK)
? source_sink : loopback);
}
@@ -858,10 +843,10 @@ static int zero_set_config(struct zero_dev *dev, unsigned number)
/*-------------------------------------------------------------------------*/
-static void zero_setup_complete (struct usb_ep *ep, struct usb_request *req)
+static void zero_setup_complete(struct usb_ep *ep, struct usb_request *req)
{
if (req->status || req->actual != req->length)
- DBG ((struct zero_dev *) ep->driver_data,
+ DBG((struct zero_dev *) ep->driver_data,
"setup complete --> %d, %d/%d\n",
req->status, req->actual, req->length);
}
@@ -874,9 +859,9 @@ static void zero_setup_complete (struct usb_ep *ep, struct usb_request *req)
* the work is in config-specific setup.
*/
static int
-zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
+zero_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
{
- struct zero_dev *dev = get_gadget_data (gadget);
+ struct zero_dev *dev = get_gadget_data(gadget);
struct usb_request *req = dev->req;
int value = -EOPNOTSUPP;
u16 w_index = le16_to_cpu(ctrl->wIndex);
@@ -895,14 +880,14 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
switch (w_value >> 8) {
case USB_DT_DEVICE:
- value = min (w_length, (u16) sizeof device_desc);
- memcpy (req->buf, &device_desc, value);
+ value = min(w_length, (u16) sizeof device_desc);
+ memcpy(req->buf, &device_desc, value);
break;
case USB_DT_DEVICE_QUALIFIER:
if (!gadget_is_dualspeed(gadget))
break;
- value = min (w_length, (u16) sizeof dev_qualifier);
- memcpy (req->buf, &dev_qualifier, value);
+ value = min(w_length, (u16) sizeof dev_qualifier);
+ memcpy(req->buf, &dev_qualifier, value);
break;
case USB_DT_OTHER_SPEED_CONFIG:
@@ -910,11 +895,11 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
break;
// FALLTHROUGH
case USB_DT_CONFIG:
- value = config_buf (gadget, req->buf,
+ value = config_buf(gadget, req->buf,
w_value >> 8,
w_value & 0xff);
if (value >= 0)
- value = min (w_length, (u16) value);
+ value = min(w_length, (u16) value);
break;
case USB_DT_STRING:
@@ -923,10 +908,10 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
* add string tables for other languages, using
* any UTF-8 characters
*/
- value = usb_gadget_get_string (&stringtab,
+ value = usb_gadget_get_string(&stringtab,
w_value & 0xff, req->buf);
if (value >= 0)
- value = min (w_length, (u16) value);
+ value = min(w_length, (u16) value);
break;
}
break;
@@ -936,20 +921,20 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
if (ctrl->bRequestType != 0)
goto unknown;
if (gadget->a_hnp_support)
- DBG (dev, "HNP available\n");
+ DBG(dev, "HNP available\n");
else if (gadget->a_alt_hnp_support)
- DBG (dev, "HNP needs a different root port\n");
+ DBG(dev, "HNP needs a different root port\n");
else
- VDBG (dev, "HNP inactive\n");
- spin_lock (&dev->lock);
+ VDBG(dev, "HNP inactive\n");
+ spin_lock(&dev->lock);
value = zero_set_config(dev, w_value);
- spin_unlock (&dev->lock);
+ spin_unlock(&dev->lock);
break;
case USB_REQ_GET_CONFIGURATION:
if (ctrl->bRequestType != USB_DIR_IN)
goto unknown;
*(u8 *)req->buf = dev->config;
- value = min (w_length, (u16) 1);
+ value = min(w_length, (u16) 1);
break;
/* until we add altsetting support, or other interfaces,
@@ -959,7 +944,7 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
case USB_REQ_SET_INTERFACE:
if (ctrl->bRequestType != USB_RECIP_INTERFACE)
goto unknown;
- spin_lock (&dev->lock);
+ spin_lock(&dev->lock);
if (dev->config && w_index == 0 && w_value == 0) {
u8 config = dev->config;
@@ -970,11 +955,11 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
* if we had more than one interface we couldn't
* use this "reset the config" shortcut.
*/
- zero_reset_config (dev);
+ zero_reset_config(dev);
zero_set_config(dev, config);
value = 0;
}
- spin_unlock (&dev->lock);
+ spin_unlock(&dev->lock);
break;
case USB_REQ_GET_INTERFACE:
if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE))
@@ -986,7 +971,7 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
break;
}
*(u8 *)req->buf = 0;
- value = min (w_length, (u16) 1);
+ value = min(w_length, (u16) 1);
break;
/*
@@ -1018,7 +1003,7 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
default:
unknown:
- VDBG (dev,
+ VDBG(dev,
"unknown control req%02x.%02x v%04x i%04x l%d\n",
ctrl->bRequestType, ctrl->bRequest,
w_value, w_index, w_length);
@@ -1028,11 +1013,11 @@ unknown:
if (value >= 0) {
req->length = value;
req->zero = value < w_length;
- value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
+ value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC);
if (value < 0) {
- DBG (dev, "ep_queue --> %d\n", value);
+ DBG(dev, "ep_queue --> %d\n", value);
req->status = 0;
- zero_setup_complete (gadget->ep0, req);
+ zero_setup_complete(gadget->ep0, req);
}
}
@@ -1040,28 +1025,26 @@ unknown:
return value;
}
-static void
-zero_disconnect (struct usb_gadget *gadget)
+static void zero_disconnect(struct usb_gadget *gadget)
{
- struct zero_dev *dev = get_gadget_data (gadget);
+ struct zero_dev *dev = get_gadget_data(gadget);
unsigned long flags;
- spin_lock_irqsave (&dev->lock, flags);
- zero_reset_config (dev);
+ spin_lock_irqsave(&dev->lock, flags);
+ zero_reset_config(dev);
/* a more significant application might have some non-usb
* activities to quiesce here, saving resources like power
* or pushing the notification up a network stack.
*/
- spin_unlock_irqrestore (&dev->lock, flags);
+ spin_unlock_irqrestore(&dev->lock, flags);
/* next we may get setup() calls to enumerate new connections;
* or an unbind() during shutdown (including removing module).
*/
}
-static void
-zero_autoresume (unsigned long _dev)
+static void zero_autoresume(unsigned long _dev)
{
struct zero_dev *dev = (struct zero_dev *) _dev;
int status;
@@ -1070,32 +1053,30 @@ zero_autoresume (unsigned long _dev)
* more significant than just a timer firing...
*/
if (dev->gadget->speed != USB_SPEED_UNKNOWN) {
- status = usb_gadget_wakeup (dev->gadget);
- DBG (dev, "wakeup --> %d\n", status);
+ status = usb_gadget_wakeup(dev->gadget);
+ DBG(dev, "wakeup --> %d\n", status);
}
}
/*-------------------------------------------------------------------------*/
-static void /* __init_or_exit */
-zero_unbind (struct usb_gadget *gadget)
+static void zero_unbind(struct usb_gadget *gadget)
{
- struct zero_dev *dev = get_gadget_data (gadget);
+ struct zero_dev *dev = get_gadget_data(gadget);
- DBG (dev, "unbind\n");
+ DBG(dev, "unbind\n");
/* we've already been disconnected ... no i/o is active */
if (dev->req) {
dev->req->length = USB_BUFSIZ;
- free_ep_req (gadget->ep0, dev->req);
+ free_ep_req(gadget->ep0, dev->req);
}
- del_timer_sync (&dev->resume);
- kfree (dev);
- set_gadget_data (gadget, NULL);
+ del_timer_sync(&dev->resume);
+ kfree(dev);
+ set_gadget_data(gadget, NULL);
}
-static int __init
-zero_bind (struct usb_gadget *gadget)
+static int __init zero_bind(struct usb_gadget *gadget)
{
struct zero_dev *dev;
struct usb_ep *ep;
@@ -1111,8 +1092,8 @@ zero_bind (struct usb_gadget *gadget)
* autoconfigure on any sane usb controller driver,
* but there may also be important quirks to address.
*/
- usb_ep_autoconfig_reset (gadget);
- ep = usb_ep_autoconfig (gadget, &fs_source_desc);
+ usb_ep_autoconfig_reset(gadget);
+ ep = usb_ep_autoconfig(gadget, &fs_source_desc);
if (!ep) {
autoconf_fail:
pr_err("%s: can't autoconfigure on %s\n",
@@ -1122,15 +1103,15 @@ autoconf_fail:
EP_IN_NAME = ep->name;
ep->driver_data = ep; /* claim */
- ep = usb_ep_autoconfig (gadget, &fs_sink_desc);
+ ep = usb_ep_autoconfig(gadget, &fs_sink_desc);
if (!ep)
goto autoconf_fail;
EP_OUT_NAME = ep->name;
ep->driver_data = ep; /* claim */
- gcnum = usb_gadget_controller_number (gadget);
+ gcnum = usb_gadget_controller_number(gadget);
if (gcnum >= 0)
- device_desc.bcdDevice = cpu_to_le16 (0x0200 + gcnum);
+ device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum);
else {
/* gadget zero is so simple (for now, no altsettings) that
* it SHOULD NOT have problems with bulk-capable hardware.
@@ -1141,7 +1122,7 @@ autoconf_fail:
*/
pr_warning("%s: controller '%s' not recognized\n",
shortname, gadget->name);
- device_desc.bcdDevice = __constant_cpu_to_le16 (0x9999);
+ device_desc.bcdDevice = __constant_cpu_to_le16(0x9999);
}
@@ -1149,12 +1130,16 @@ autoconf_fail:
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
- spin_lock_init (&dev->lock);
+ spin_lock_init(&dev->lock);
dev->gadget = gadget;
- set_gadget_data (gadget, dev);
+ set_gadget_data(gadget, dev);
+
+ init_timer(&dev->resume);
+ dev->resume.function = zero_autoresume;
+ dev->resume.data = (unsigned long) dev;
/* preallocate control response and buffer */
- dev->req = usb_ep_alloc_request (gadget->ep0, GFP_KERNEL);
+ dev->req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL);
if (!dev->req)
goto enomem;
dev->req->buf = kmalloc(USB_BUFSIZ, GFP_KERNEL);
@@ -1182,11 +1167,8 @@ autoconf_fail:
loopback_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
}
- usb_gadget_set_selfpowered (gadget);
+ usb_gadget_set_selfpowered(gadget);
- init_timer (&dev->resume);
- dev->resume.function = zero_autoresume;
- dev->resume.data = (unsigned long) dev;
if (autoresume) {
source_sink_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
loopback_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
@@ -1194,45 +1176,43 @@ autoconf_fail:
gadget->ep0->driver_data = dev;
- INFO (dev, "%s, version: " DRIVER_VERSION "\n", longname);
- INFO (dev, "using %s, OUT %s IN %s\n", gadget->name,
+ INFO(dev, "%s, version: " DRIVER_VERSION "\n", longname);
+ INFO(dev, "using %s, OUT %s IN %s\n", gadget->name,
EP_OUT_NAME, EP_IN_NAME);
- snprintf (manufacturer, sizeof manufacturer, "%s %s with %s",
+ snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
init_utsname()->sysname, init_utsname()->release,
gadget->name);
return 0;
enomem:
- zero_unbind (gadget);
+ zero_unbind(gadget);
return -ENOMEM;
}
/*-------------------------------------------------------------------------*/
-static void
-zero_suspend (struct usb_gadget *gadget)
+static void zero_suspend(struct usb_gadget *gadget)
{
- struct zero_dev *dev = get_gadget_data (gadget);
+ struct zero_dev *dev = get_gadget_data(gadget);
if (gadget->speed == USB_SPEED_UNKNOWN)
return;
if (autoresume) {
- mod_timer (&dev->resume, jiffies + (HZ * autoresume));
- DBG (dev, "suspend, wakeup in %d seconds\n", autoresume);
+ mod_timer(&dev->resume, jiffies + (HZ * autoresume));
+ DBG(dev, "suspend, wakeup in %d seconds\n", autoresume);
} else
- DBG (dev, "suspend\n");
+ DBG(dev, "suspend\n");
}
-static void
-zero_resume (struct usb_gadget *gadget)
+static void zero_resume(struct usb_gadget *gadget)
{
- struct zero_dev *dev = get_gadget_data (gadget);
+ struct zero_dev *dev = get_gadget_data(gadget);
- DBG (dev, "resume\n");
- del_timer (&dev->resume);
+ DBG(dev, "resume\n");
+ del_timer(&dev->resume);
}
@@ -1264,15 +1244,15 @@ MODULE_AUTHOR("David Brownell");
MODULE_LICENSE("GPL");
-static int __init init (void)
+static int __init init(void)
{
- return usb_gadget_register_driver (&zero_driver);
+ return usb_gadget_register_driver(&zero_driver);
}
-module_init (init);
+module_init(init);
-static void __exit cleanup (void)
+static void __exit cleanup(void)
{
- usb_gadget_unregister_driver (&zero_driver);
+ usb_gadget_unregister_driver(&zero_driver);
}
-module_exit (cleanup);
+module_exit(cleanup);
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-28 08:17:31 +0000