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path: root/drivers/usb/gadget/composite.c
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Diffstat (limited to 'drivers/usb/gadget/composite.c')
-rw-r--r--drivers/usb/gadget/composite.c60
1 files changed, 40 insertions, 20 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 09289bb1e20f..391d169f8d07 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -36,7 +36,7 @@
*/
/* big enough to hold our biggest descriptor */
-#define USB_BUFSIZ 512
+#define USB_BUFSIZ 1024
static struct usb_composite_driver *composite;
@@ -85,7 +85,7 @@ MODULE_PARM_DESC(iSerialNumber, "SerialNumber string");
* This function returns the value of the function's bind(), which is
* zero for success else a negative errno value.
*/
-int __init usb_add_function(struct usb_configuration *config,
+int usb_add_function(struct usb_configuration *config,
struct usb_function *function)
{
int value = -EINVAL;
@@ -215,7 +215,7 @@ int usb_function_activate(struct usb_function *function)
* Returns the interface ID which was allocated; or -ENODEV if no
* more interface IDs can be allocated.
*/
-int __init usb_interface_id(struct usb_configuration *config,
+int usb_interface_id(struct usb_configuration *config,
struct usb_function *function)
{
unsigned id = config->next_interface_id;
@@ -480,7 +480,7 @@ done:
* assigns global resources including string IDs, and per-configuration
* resources such as interface IDs and endpoints.
*/
-int __init usb_add_config(struct usb_composite_dev *cdev,
+int usb_add_config(struct usb_composite_dev *cdev,
struct usb_configuration *config)
{
int status = -EINVAL;
@@ -677,7 +677,7 @@ static int get_string(struct usb_composite_dev *cdev,
* ensure that for example different functions don't wrongly assign
* different meanings to the same identifier.
*/
-int __init usb_string_id(struct usb_composite_dev *cdev)
+int usb_string_id(struct usb_composite_dev *cdev)
{
if (cdev->next_string_id < 254) {
/* string id 0 is reserved */
@@ -898,7 +898,19 @@ static void composite_disconnect(struct usb_gadget *gadget)
/*-------------------------------------------------------------------------*/
-static void /* __init_or_exit */
+static ssize_t composite_show_suspended(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct usb_gadget *gadget = dev_to_usb_gadget(dev);
+ struct usb_composite_dev *cdev = get_gadget_data(gadget);
+
+ return sprintf(buf, "%d\n", cdev->suspended);
+}
+
+static DEVICE_ATTR(suspended, 0444, composite_show_suspended, NULL);
+
+static void
composite_unbind(struct usb_gadget *gadget)
{
struct usb_composite_dev *cdev = get_gadget_data(gadget);
@@ -944,10 +956,11 @@ composite_unbind(struct usb_gadget *gadget)
}
kfree(cdev);
set_gadget_data(gadget, NULL);
+ device_remove_file(&gadget->dev, &dev_attr_suspended);
composite = NULL;
}
-static void __init
+static void
string_override_one(struct usb_gadget_strings *tab, u8 id, const char *s)
{
struct usb_string *str = tab->strings;
@@ -960,7 +973,7 @@ string_override_one(struct usb_gadget_strings *tab, u8 id, const char *s)
}
}
-static void __init
+static void
string_override(struct usb_gadget_strings **tab, u8 id, const char *s)
{
while (*tab) {
@@ -969,7 +982,7 @@ string_override(struct usb_gadget_strings **tab, u8 id, const char *s)
}
}
-static int __init composite_bind(struct usb_gadget *gadget)
+static int composite_bind(struct usb_gadget *gadget)
{
struct usb_composite_dev *cdev;
int status = -ENOMEM;
@@ -1004,6 +1017,14 @@ static int __init composite_bind(struct usb_gadget *gadget)
*/
usb_ep_autoconfig_reset(cdev->gadget);
+ /* standardized runtime overrides for device ID data */
+ if (idVendor)
+ cdev->desc.idVendor = cpu_to_le16(idVendor);
+ if (idProduct)
+ cdev->desc.idProduct = cpu_to_le16(idProduct);
+ if (bcdDevice)
+ cdev->desc.bcdDevice = cpu_to_le16(bcdDevice);
+
/* composite gadget needs to assign strings for whole device (like
* serial number), register function drivers, potentially update
* power state and consumption, etc
@@ -1015,14 +1036,6 @@ static int __init composite_bind(struct usb_gadget *gadget)
cdev->desc = *composite->dev;
cdev->desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
- /* standardized runtime overrides for device ID data */
- if (idVendor)
- cdev->desc.idVendor = cpu_to_le16(idVendor);
- if (idProduct)
- cdev->desc.idProduct = cpu_to_le16(idProduct);
- if (bcdDevice)
- cdev->desc.bcdDevice = cpu_to_le16(bcdDevice);
-
/* strings can't be assigned before bind() allocates the
* releavnt identifiers
*/
@@ -1036,6 +1049,10 @@ static int __init composite_bind(struct usb_gadget *gadget)
string_override(composite->strings,
cdev->desc.iSerialNumber, iSerialNumber);
+ status = device_create_file(&gadget->dev, &dev_attr_suspended);
+ if (status)
+ goto fail;
+
INFO(cdev, "%s ready\n", composite->name);
return 0;
@@ -1064,6 +1081,8 @@ composite_suspend(struct usb_gadget *gadget)
}
if (composite->suspend)
composite->suspend(cdev);
+
+ cdev->suspended = 1;
}
static void
@@ -1084,6 +1103,8 @@ composite_resume(struct usb_gadget *gadget)
f->resume(f);
}
}
+
+ cdev->suspended = 0;
}
/*-------------------------------------------------------------------------*/
@@ -1092,7 +1113,6 @@ static struct usb_gadget_driver composite_driver = {
.speed = USB_SPEED_HIGH,
.bind = composite_bind,
- /* .unbind = __exit_p(composite_unbind), */
.unbind = composite_unbind,
.setup = composite_setup,
@@ -1121,7 +1141,7 @@ static struct usb_gadget_driver composite_driver = {
* while it was binding. That would usually be done in order to wait for
* some userspace participation.
*/
-int __init usb_composite_register(struct usb_composite_driver *driver)
+int usb_composite_register(struct usb_composite_driver *driver)
{
if (!driver || !driver->dev || !driver->bind || composite)
return -EINVAL;
@@ -1142,7 +1162,7 @@ int __init usb_composite_register(struct usb_composite_driver *driver)
* This function is used to unregister drivers using the composite
* driver framework.
*/
-void /* __exit */ usb_composite_unregister(struct usb_composite_driver *driver)
+void usb_composite_unregister(struct usb_composite_driver *driver)
{
if (composite != driver)
return;