diff options
| author | Li Jun <jun.li@freescale.com> | 2015-07-20 20:20:10 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2015-09-17 09:24:02 -0500 |
| commit | 2cdab253f419124d159dd87e2c3b20dc32f8e18b (patch) | |
| tree | 25762b48e024314389cbbd537d5561ddceadd9b3 | |
| parent | e8987b2b2ceffdad2b12100c015b336cc03e700d (diff) | |
MLK-11266-2 usb: gadget: audio: 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>
| -rw-r--r-- | drivers/usb/gadget/audio.c | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/drivers/usb/gadget/audio.c b/drivers/usb/gadget/audio.c index 04345a46692f..293b8edceacd 100644 --- a/drivers/usb/gadget/audio.c +++ b/drivers/usb/gadget/audio.c @@ -90,20 +90,7 @@ 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]; /*-------------------------------------------------------------------------*/ @@ -143,14 +130,28 @@ static int __init audio_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(cdev->gadget) && !otg_desc[0]) { + struct usb_descriptor_header *usb_desc; + + usb_desc = usb_otg_descriptor_alloc(cdev->gadget); + if (!usb_desc) + goto fail; + usb_otg_descriptor_init(cdev->gadget, usb_desc); + otg_desc[0] = usb_desc; + otg_desc[1] = NULL; + } + status = usb_add_config(cdev, &audio_config_driver, audio_do_config); if (status < 0) - goto fail; + goto fail_otg_desc; usb_composite_overwrite_options(cdev, &coverwrite); INFO(cdev, "%s, version: %s\n", DRIVER_DESC, DRIVER_VERSION); return 0; +fail_otg_desc: + kfree(otg_desc[0]); + otg_desc[0] = NULL; fail: return status; } @@ -160,6 +161,8 @@ static int __exit audio_unbind(struct usb_composite_dev *cdev) #ifdef CONFIG_GADGET_UAC1 gaudio_cleanup(); #endif + kfree(otg_desc[0]); + otg_desc[0] = NULL; return 0; } |