On Tue, Jan 17, 2023, Elson Roy Serrao wrote:
> Add a flag to indicate whether the gadget is capable
> of sending remote wakeup to the host.
>
> Signed-off-by: Elson Roy Serrao <quic_eserrao@xxxxxxxxxxx>
> ---
> drivers/usb/gadget/composite.c | 3 +++
> include/linux/usb/gadget.h | 2 ++
> 2 files changed, 5 insertions(+)
>
> diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
> index 403563c..b83963a 100644
> --- a/drivers/usb/gadget/composite.c
> +++ b/drivers/usb/gadget/composite.c
> @@ -965,6 +965,9 @@ static int set_config(struct usb_composite_dev *cdev,
> else
> usb_gadget_clear_selfpowered(gadget);
>
> + if (USB_CONFIG_ATT_WAKEUP & c->bmAttributes)
> + gadget->rw_capable = 1;
Some device may not support remote wakeup. gadget->rw_capable should be
set and reported by the UDC. May need a gadget ops to enable remote
wakeup here.
Thanks,
Thinh
> +
> usb_gadget_vbus_draw(gadget, power);
> if (result >= 0 && cdev->delayed_status)
> result = USB_GADGET_DELAYED_STATUS;
> diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
> index dc3092c..15785f8 100644
> --- a/include/linux/usb/gadget.h
> +++ b/include/linux/usb/gadget.h
> @@ -385,6 +385,7 @@ struct usb_gadget_ops {
> * indicates that it supports LPM as per the LPM ECN & errata.
> * @irq: the interrupt number for device controller.
> * @id_number: a unique ID number for ensuring that gadget names are distinct
> + * @rw_capable: True if the gadget is capable of sending remote wakeup.
> *
> * Gadgets have a mostly-portable "gadget driver" implementing device
> * functions, handling all usb configurations and interfaces. Gadget
> @@ -446,6 +447,7 @@ struct usb_gadget {
> unsigned lpm_capable:1;
> int irq;
> int id_number;
> + unsigned rw_capable:1;
> };
> #define work_to_gadget(w) (container_of((w), struct usb_gadget, work))
>
> --
> 2.7.4
>
