From: Steffen Trumtrar <s.trumtrar@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 2/6] usb: gadget: add usb_gadget_udc_reset function
Date: Mon, 16 Sep 2019 14:43:41 +0200 [thread overview]
Message-ID: <20190916124345.24244-2-s.trumtrar@pengutronix.de> (raw)
In-Reply-To: <20190916124345.24244-1-s.trumtrar@pengutronix.de>
Add a function to notify the udc core, that a bus reset occured.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
---
drivers/usb/gadget/udc-core.c | 15 +++++++++++++++
include/usb/gadget.h | 4 ++++
2 files changed, 19 insertions(+)
diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c
index e357456098ae..096f05ed48df 100644
--- a/drivers/usb/gadget/udc-core.c
+++ b/drivers/usb/gadget/udc-core.c
@@ -108,6 +108,21 @@ void usb_gadget_set_state(struct usb_gadget *gadget,
}
EXPORT_SYMBOL_GPL(usb_gadget_set_state);
+/**
+ * usb_gadget_udc_reset - notifies the udc core that bus reset occurs
+ * @gadget: The gadget which bus reset occurs
+ * @driver: The gadget driver we want to notify
+ *
+ * If the udc driver has bus reset handler, it needs to call this when the bus
+ * reset occurs, it notifies the gadget driver that the bus reset occurs as
+ * well as updates gadget state.
+ */
+void usb_gadget_udc_reset(struct usb_gadget *gadget,
+ struct usb_gadget_driver *driver)
+{
+ usb_gadget_set_state(gadget, USB_STATE_DEFAULT);
+}
+EXPORT_SYMBOL_GPL(usb_gadget_udc_reset);
/* ------------------------------------------------------------------------- */
/**
diff --git a/include/usb/gadget.h b/include/usb/gadget.h
index 80418a9cd447..afa11b2d9d8a 100644
--- a/include/usb/gadget.h
+++ b/include/usb/gadget.h
@@ -1018,6 +1018,10 @@ extern void usb_gadget_set_state(struct usb_gadget *gadget,
/*-------------------------------------------------------------------------*/
+/* utility to tell udc core that the bus reset occurs */
+extern void usb_gadget_udc_reset(struct usb_gadget *gadget,
+ struct usb_gadget_driver *driver);
+
/* utility wrapping a simple endpoint selection policy */
extern struct usb_ep *usb_ep_autoconfig(struct usb_gadget *,
--
2.23.0
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next prev parent reply other threads:[~2019-09-16 12:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-16 12:43 [PATCH 1/6] barebox-wrapper: add IRQ_WAKE_THREAD Steffen Trumtrar
2019-09-16 12:43 ` Steffen Trumtrar [this message]
2019-09-16 12:43 ` [PATCH 3/6] usb/ch9.h: add USB 3.1 isoc endpoint define Steffen Trumtrar
2019-09-16 12:43 ` [PATCH 4/6] usb: dwc3: add support for gadget mode Steffen Trumtrar
2019-09-16 12:43 ` [PATCH 5/6] usb: gadget: composite: conditionally dequeue setup requests Steffen Trumtrar
2019-09-16 12:43 ` [PATCH 6/6] ARM: Layerscape: LS1046a: configure USB ports Steffen Trumtrar
2019-09-17 9:52 ` [PATCH 1/6] barebox-wrapper: add IRQ_WAKE_THREAD Sascha Hauer
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