Add this function so for example USB Host driver can notify
the PHY about some event. This is useful for me on i.MX28, where
I need to tell the PHY, from the EHCI interrupt handler, to disable
disconnection detector (or reenable it).
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Felipe Balbi <balbi@xxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Linux USB <linux-usb@xxxxxxxxxxxxxxx>
---
include/linux/usb/otg.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h
index 38ab3f4..4a74618 100644
--- a/include/linux/usb/otg.h
+++ b/include/linux/usb/otg.h
@@ -117,6 +117,9 @@ struct usb_phy {
int (*set_suspend)(struct usb_phy *x,
int suspend);
+ /* for host driver to pass data to the PHY */
+ int (*notify)(struct usb_phy *x,
+ void *data);
};
@@ -170,6 +173,15 @@ usb_phy_shutdown(struct usb_phy *x)
x->shutdown(x);
}
+static inline int
+usb_phy_notify(struct usb_phy *x, void *data)
+{
+ if (x->notify)
+ return x->notify(x, data);
+
+ return 0;
+}
+
/* for usb host and peripheral controller drivers */
#ifdef CONFIG_USB_OTG_UTILS
extern struct usb_phy *usb_get_transceiver(void);
--
1.7.10
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