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authorFelipe Balbi <balbi@ti.com>2012-03-15 16:37:18 +0200
committerFelipe Balbi <balbi@ti.com>2012-04-10 12:21:32 +0300
commit6d258a4c42089229b855fd706622029decf316d6 (patch)
treeb29c8fd7c2aa60afa419161e433140cde4a389bb /drivers/usb/gadget/udc-core.c
parent0034102808e0dbbf3a2394b82b1bb40b5778de9e (diff)
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usb: gadget: udc-core: stop UDC on device-initiated disconnect
When we want to do device-initiated disconnect, let's make sure we stop the UDC in order to e.g. allow lower power states to be achieved by turning off unnecessary clocks and/or stoping PHYs. When reconnecting, call ->udc_start() again to make sure UDC is reinitialized. Cc: stable@vger.kernel.org Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/udc-core.c')
-rw-r--r--drivers/usb/gadget/udc-core.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c
index 56da49f31d6c..c261887e05ae 100644
--- a/drivers/usb/gadget/udc-core.c
+++ b/drivers/usb/gadget/udc-core.c
@@ -411,8 +411,12 @@ static ssize_t usb_udc_softconn_store(struct device *dev,
struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
if (sysfs_streq(buf, "connect")) {
+ if (udc_is_newstyle(udc))
+ usb_gadget_udc_start(udc->gadget, udc->driver);
usb_gadget_connect(udc->gadget);
} else if (sysfs_streq(buf, "disconnect")) {
+ if (udc_is_newstyle(udc))
+ usb_gadget_udc_stop(udc->gadget, udc->driver);
usb_gadget_disconnect(udc->gadget);
} else {
dev_err(dev, "unsupported command '%s'\n", buf);