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usb: gadget: add usb otg descriptor allocate and init interface

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Allocate usb otg descriptor and initialize it according to gadget's otg
capabilities, if usb_otg_caps is not set, keep settings as current gadget
drivers. With this 2 new interfaces, gadget can use usb_otg_descriptor
for OTG 1.x, and usb_otg20_descriptor for OTG 2.0 or above, and otg
features can be decided by the combination of usb hardware property
and driver config.

Signed-off-by: Li Jun <jun.li@freescale.com>
Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Li Jun
2015-07-09 15:18:47 +08:00
committed by Felipe Balbi
parent b0930d4caf
commit d1606dfb98
2 changed files with 60 additions and 0 deletions
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4
include/linux/usb/gadget.h
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@@ -1092,6 +1092,10 @@ int usb_assign_descriptors(struct usb_function *f,
struct usb_descriptor_header **ss);
void usb_free_all_descriptors(struct usb_function *f);
struct usb_descriptor_header *usb_otg_descriptor_alloc(
struct usb_gadget *gadget);
int usb_otg_descriptor_init(struct usb_gadget *gadget,
struct usb_descriptor_header *otg_desc);
/*-------------------------------------------------------------------------*/
/* utility to simplify map/unmap of usb_requests to/from DMA */