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usb: dwc2: gadget: implement udc_set_speed() 

Implemented udc_set_speed() gadget ops to allow the udc to select
the gadget speed on initialization.

Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Argishti Aleksanyan <aleksan@synopsys.com>
Link: https://lore.kernel.org/r/c453469d618100321c876a8c2b0ebee15a456eac.1628583235.git.aleksan@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Argishti Aleksanyan 2021-08-10 06:42:58 -04:00 committed by Greg Kroah-Hartman
parent 73e19de7b7
commit 5324bad66f
1 changed files with 23 additions and 0 deletions
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23
drivers/usb/dwc2/gadget.c
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@ -4709,12 +4709,35 @@ static int dwc2_hsotg_vbus_draw(struct usb_gadget *gadget, unsigned int mA)
return usb_phy_set_power(hsotg->uphy, mA);
}
static void dwc2_gadget_set_speed(struct usb_gadget *g, enum usb_device_speed speed)
{
struct dwc2_hsotg *hsotg = to_hsotg(g);
unsigned long flags;
spin_lock_irqsave(&hsotg->lock, flags);
switch (speed) {
case USB_SPEED_HIGH:
hsotg->params.speed = DWC2_SPEED_PARAM_HIGH;
break;
case USB_SPEED_FULL:
hsotg->params.speed = DWC2_SPEED_PARAM_FULL;
break;
case USB_SPEED_LOW:
hsotg->params.speed = DWC2_SPEED_PARAM_LOW;
break;
default:
dev_err(hsotg->dev, "invalid speed (%d)\n", speed);
}
spin_unlock_irqrestore(&hsotg->lock, flags);
}
static const struct usb_gadget_ops dwc2_hsotg_gadget_ops = {
.get_frame = dwc2_hsotg_gadget_getframe,
.set_selfpowered = dwc2_hsotg_set_selfpowered,
.udc_start = dwc2_hsotg_udc_start,
.udc_stop = dwc2_hsotg_udc_stop,
.pullup = dwc2_hsotg_pullup,
.udc_set_speed = dwc2_gadget_set_speed,
.vbus_session = dwc2_hsotg_vbus_session,
.vbus_draw = dwc2_hsotg_vbus_draw,
};