| Message ID | 20201114081247.25063-2-wcheng@codeaurora.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add vbus draw support to DWC3 | expand |
On 20-11-14 00:12:45, Wesley Cheng wrote: > Some devices support charging while in device mode. In these situations, > the USB gadget will notify the DWC3 gadget driver to modify the current > based on the enumeration and device state. The usb_phy_set_power() API > will allow external charger entities to adjust the charge current through > the notifier block. > > Signed-off-by: Wesley Cheng <wcheng@codeaurora.org> > --- > drivers/usb/dwc3/gadget.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c > index c145da1d8ba5..69122f66978e 100644 > --- a/drivers/usb/dwc3/gadget.c > +++ b/drivers/usb/dwc3/gadget.c > @@ -2387,6 +2387,16 @@ static void dwc3_gadget_set_speed(struct usb_gadget *g, > spin_unlock_irqrestore(&dwc->lock, flags); > } > > +static int dwc3_gadget_vbus_draw(struct usb_gadget *g, unsigned int mA) > +{ > + struct dwc3 *dwc = gadget_to_dwc(g); > + > + if (dwc->usb2_phy) > + return usb_phy_set_power(dwc->usb2_phy, mA); > + > + return 0; > +} > + > static const struct usb_gadget_ops dwc3_gadget_ops = { > .get_frame = dwc3_gadget_get_frame, > .wakeup = dwc3_gadget_wakeup, > @@ -2396,6 +2406,7 @@ static const struct usb_gadget_ops dwc3_gadget_ops = { > .udc_stop = dwc3_gadget_stop, > .udc_set_speed = dwc3_gadget_set_speed, > .get_config_params = dwc3_gadget_config_params, > + .vbus_draw = dwc3_gadget_vbus_draw, > }; > Reviewed-by: Peter Chen <peter.chen@nxp.com>
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index c145da1d8ba5..69122f66978e 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2387,6 +2387,16 @@ static void dwc3_gadget_set_speed(struct usb_gadget *g, spin_unlock_irqrestore(&dwc->lock, flags); } +static int dwc3_gadget_vbus_draw(struct usb_gadget *g, unsigned int mA) +{ + struct dwc3 *dwc = gadget_to_dwc(g); + + if (dwc->usb2_phy) + return usb_phy_set_power(dwc->usb2_phy, mA); + + return 0; +} + static const struct usb_gadget_ops dwc3_gadget_ops = { .get_frame = dwc3_gadget_get_frame, .wakeup = dwc3_gadget_wakeup, @@ -2396,6 +2406,7 @@ static const struct usb_gadget_ops dwc3_gadget_ops = { .udc_stop = dwc3_gadget_stop, .udc_set_speed = dwc3_gadget_set_speed, .get_config_params = dwc3_gadget_config_params, + .vbus_draw = dwc3_gadget_vbus_draw, }; /* -------------------------------------------------------------------------- */
Some devices support charging while in device mode. In these situations, the USB gadget will notify the DWC3 gadget driver to modify the current based on the enumeration and device state. The usb_phy_set_power() API will allow external charger entities to adjust the charge current through the notifier block. Signed-off-by: Wesley Cheng <wcheng@codeaurora.org> --- drivers/usb/dwc3/gadget.c | 11 +++++++++++ 1 file changed, 11 insertions(+)