diff options
| author | Li Jun <jun.li@freescale.com> | 2015-06-08 17:31:29 +0800 |
|---|---|---|
| committer | Li Jun <jun.li@freescale.com> | 2015-07-22 10:22:19 +0800 |
| commit | ef51080a7ac7bfdd9f77689a50e182328f25d8e6 (patch) | |
| tree | 16116580afb206a57648eed9a069211fe399790a | |
| parent | bfd54e29cdc8913b98c0157ea3cc93c0b2afdf2a (diff) | |
MLK-11266-3 usb: gadget: cdc2: allocate and init otg descriptor by otg capabilities
Allocate and initialize usb otg descriptor according to gadget otg
capabilities, add it for each usb configurations. If otg capability
is not defined, keep its original otg descriptor unchanged.
Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Li Jun <jun.li@freescale.com>
(cherry picked from commit c58f56bded2d17fa1fd3bde555b213a996f5a9f9)
| -rw-r--r-- | drivers/usb/gadget/cdc2.c | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c index 0fd9470b79c0..253dee4ec007 100644 --- a/drivers/usb/gadget/cdc2.c +++ b/drivers/usb/gadget/cdc2.c @@ -60,21 +60,7 @@ static struct usb_device_descriptor device_desc = { .bNumConfigurations = 1, }; -static struct usb_otg_descriptor otg_descriptor = { - .bLength = sizeof otg_descriptor, - .bDescriptorType = USB_DT_OTG, - - /* REVISIT SRP-only hardware is possible, although - * it would not be called "OTG" ... - */ - .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, -}; - -static const struct usb_descriptor_header *otg_desc[] = { - (struct usb_descriptor_header *) &otg_descriptor, - NULL, -}; - +static const struct usb_descriptor_header *otg_desc[2]; /* string IDs are assigned dynamically */ static struct usb_string strings_dev[] = { @@ -193,10 +179,21 @@ static int __init cdc_bind(struct usb_composite_dev *cdev) device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; + if (gadget_is_otg(gadget) && !otg_desc[0]) { + struct usb_descriptor_header *usb_desc; + + usb_desc = usb_otg_descriptor_alloc(gadget); + if (!usb_desc) + goto fail1; + usb_otg_descriptor_init(gadget, usb_desc); + otg_desc[0] = usb_desc; + otg_desc[1] = NULL; + } + /* register our configuration */ status = usb_add_config(cdev, &cdc_config_driver, cdc_do_config); if (status < 0) - goto fail1; + goto fail2; usb_composite_overwrite_options(cdev, &coverwrite); dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n", @@ -204,6 +201,9 @@ static int __init cdc_bind(struct usb_composite_dev *cdev) return 0; +fail2: + kfree(otg_desc[0]); + otg_desc[0] = NULL; fail1: usb_put_function_instance(fi_serial); fail: @@ -219,6 +219,9 @@ static int __exit cdc_unbind(struct usb_composite_dev *cdev) usb_put_function(f_ecm); if (!IS_ERR_OR_NULL(fi_ecm)) usb_put_function_instance(fi_ecm); + kfree(otg_desc[0]); + otg_desc[0] = NULL; + return 0; } |