| Message ID | 1413801940-31086-9-git-send-email-m.szyprowski@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
> From: Marek Szyprowski [mailto:m.szyprowski@samsung.com] > Sent: Monday, October 20, 2014 3:46 AM > > This patch moves udc initialization from pullup() method to > s3c_hsotg_udc_start(), so that method ends with hardware fully > initialized and left in soft-disconnected state. After this change, the > pullup() method simply clears soft-disconnect start() when called with > is_on=1. For completeness, a call to s3c_hsotg_core_disconnect() has > been added when pullup() method is called with is_on=0, what puts the > udc hardware back to soft-disconnected state. > > Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> > --- > drivers/usb/dwc2/gadget.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c > index 98adf8d17493..e8ffc080e6c7 100644 > --- a/drivers/usb/dwc2/gadget.c > +++ b/drivers/usb/dwc2/gadget.c > @@ -2883,6 +2883,7 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget, > struct usb_gadget_driver *driver) > { > struct s3c_hsotg *hsotg = to_hsotg(gadget); > + unsigned long flags; > int ret; > > if (!hsotg) { > @@ -2921,7 +2922,13 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget, > > s3c_hsotg_phy_enable(hsotg); > > + spin_lock_irqsave(&hsotg->lock, flags); > + s3c_hsotg_init(hsotg); > + s3c_hsotg_core_init_disconnected(hsotg); > + spin_unlock_irqrestore(&hsotg->lock, flags); > + > dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name); > + > return 0; > > err: > @@ -2994,9 +3001,9 @@ static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on) > spin_lock_irqsave(&hsotg->lock, flags); > if (is_on) { > clk_enable(hsotg->clk); > - s3c_hsotg_core_init_disconnected(hsotg); > s3c_hsotg_core_connect(hsotg); > } else { > + s3c_hsotg_core_disconnect(hsotg); > clk_disable(hsotg->clk); > } > Acked-by: Paul Zimmerman <paulz@synopsys.com> -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 98adf8d17493..e8ffc080e6c7 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -2883,6 +2883,7 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget, struct usb_gadget_driver *driver) { struct s3c_hsotg *hsotg = to_hsotg(gadget); + unsigned long flags; int ret; if (!hsotg) { @@ -2921,7 +2922,13 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget, s3c_hsotg_phy_enable(hsotg); + spin_lock_irqsave(&hsotg->lock, flags); + s3c_hsotg_init(hsotg); + s3c_hsotg_core_init_disconnected(hsotg); + spin_unlock_irqrestore(&hsotg->lock, flags); + dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name); + return 0; err: @@ -2994,9 +3001,9 @@ static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on) spin_lock_irqsave(&hsotg->lock, flags); if (is_on) { clk_enable(hsotg->clk); - s3c_hsotg_core_init_disconnected(hsotg); s3c_hsotg_core_connect(hsotg); } else { + s3c_hsotg_core_disconnect(hsotg); clk_disable(hsotg->clk); }
This patch moves udc initialization from pullup() method to s3c_hsotg_udc_start(), so that method ends with hardware fully initialized and left in soft-disconnected state. After this change, the pullup() method simply clears soft-disconnect start() when called with is_on=1. For completeness, a call to s3c_hsotg_core_disconnect() has been added when pullup() method is called with is_on=0, what puts the udc hardware back to soft-disconnected state. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> --- drivers/usb/dwc2/gadget.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)