usb: gadget: hid: 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. Signed-off-by: Li Jun <jun.li@freescale.com> Reviewed-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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75c9310a05
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1 changed files with 20 additions and 16 deletions
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@ -68,21 +68,7 @@ static struct usb_device_descriptor device_desc = {
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.bNumConfigurations = 1,
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};
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static struct usb_otg_descriptor otg_descriptor = {
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.bLength = sizeof otg_descriptor,
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.bDescriptorType = USB_DT_OTG,
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/* REVISIT SRP-only hardware is possible, although
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* it would not be called "OTG" ...
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*/
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.bmAttributes = USB_OTG_SRP | USB_OTG_HNP,
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};
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static const struct usb_descriptor_header *otg_desc[] = {
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(struct usb_descriptor_header *) &otg_descriptor,
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NULL,
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};
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static const struct usb_descriptor_header *otg_desc[2];
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/* string IDs are assigned dynamically */
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static struct usb_string strings_dev[] = {
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@ -186,16 +172,30 @@ static int hid_bind(struct usb_composite_dev *cdev)
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device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
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device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
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if (gadget_is_otg(gadget) && !otg_desc[0]) {
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struct usb_descriptor_header *usb_desc;
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usb_desc = usb_otg_descriptor_alloc(gadget);
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if (!usb_desc)
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goto put;
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usb_otg_descriptor_init(gadget, usb_desc);
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otg_desc[0] = usb_desc;
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otg_desc[1] = NULL;
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}
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/* register our configuration */
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status = usb_add_config(cdev, &config_driver, do_config);
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if (status < 0)
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goto put;
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goto free_otg_desc;
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usb_composite_overwrite_options(cdev, &coverwrite);
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dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
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return 0;
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free_otg_desc:
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kfree(otg_desc[0]);
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otg_desc[0] = NULL;
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put:
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list_for_each_entry(m, &hidg_func_list, node) {
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if (m == n)
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@ -213,6 +213,10 @@ static int hid_unbind(struct usb_composite_dev *cdev)
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usb_put_function(n->f);
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usb_put_function_instance(n->fi);
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}
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kfree(otg_desc[0]);
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otg_desc[0] = NULL;
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return 0;
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}
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