On Thu, Mar 26, 2015 at 03:38:38AM +0800, Macpaul Lin wrote:
> add supports OTG 2.0 for multi.c
>
> Signed-off-by: Macpaul Lin <macp...@gmail.com>
> ---
> drivers/usb/gadget/legacy/multi.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/usb/gadget/legacy/multi.c
> b/drivers/usb/gadget/legacy/multi.c
> index 39d27bb..0f4005e 100644
> --- a/drivers/usb/gadget/legacy/multi.c
> +++ b/drivers/usb/gadget/legacy/multi.c
> @@ -89,6 +89,9 @@ static const struct usb_descriptor_header *otg_desc[] = {
> * it would not be called "OTG" ...
> */
> .bmAttributes = USB_OTG_SRP | USB_OTG_HNP,
> +#ifdef CONFIG_USB_OTG20
> + .bcdOTG = cpu_to_le16(0x0200),
> +#endif
> },
> NULL,
> };
> --
> 1.8.3.2
>
Would you consider abstract most your changes for composite.c as API, like
usb_gadget_customize_otg_desc, and call it at here and other gadget
driver which needs to change.
At composite.c, you only need to copy configuration descriptor[0]
to request buffer.
It can align otg descriptor at two places as well as customize otg
descriptor according to platforms.
One more thing, the code in condition gadget_is_otg(usb_gadget) may
need for otg v2.0 device too, you may consider using gadget_is_otg
for all otg devices, and using gadget_is_otg13 and gadget_is_otg20
only for differences.
--
Best Regards,
Peter Chen
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