Hi,
Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx> writes:
> Add suspend resume support. In the suspend udc is disconnected
> and it is set to ready at resume for it to be functional.
>
> Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx>
> ---
> drivers/usb/gadget/udc/udc-xilinx.c | 52 +++++++++++++++++++++++++++++
> 1 file changed, 52 insertions(+)
>
> diff --git a/drivers/usb/gadget/udc/udc-xilinx.c b/drivers/usb/gadget/udc/udc-xilinx.c
> index f5ca670776a3..1369792f195a 100644
> --- a/drivers/usb/gadget/udc/udc-xilinx.c
> +++ b/drivers/usb/gadget/udc/udc-xilinx.c
> @@ -2176,6 +2176,57 @@ static int xudc_remove(struct platform_device *pdev)
> return 0;
> }
>
> +#ifdef CONFIG_PM_SLEEP
> +static int xudc_suspend(struct device *dev)
> +{
> + struct xusb_udc *udc;
> + u32 crtlreg;
> + unsigned long flags;
> +
> + udc = dev_get_drvdata(dev);
> +
> + spin_lock_irqsave(&udc->lock, flags);
> +
> + crtlreg = udc->read_fn(udc->addr + XUSB_CONTROL_OFFSET);
> + crtlreg &= ~XUSB_CONTROL_USB_READY_MASK;
> +
> + udc->write_fn(udc->addr, XUSB_CONTROL_OFFSET, crtlreg);
> +
> + spin_unlock_irqrestore(&udc->lock, flags);
> + if (udc->driver && udc->driver->disconnect)
> + udc->driver->disconnect(&udc->gadget);
Why disconnect? Seems like you should call ->suspend() instead, no?
--
balbi
