This is a note to let you know that I've just added the patch titled
usb: chipidea: udc: add pullup fuction, needed by the uvc gadget
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-next branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will also be merged in the next major kernel release
during the merge window.
If you have any questions about this process, please let me know.
>From c0a48e6c75f2ac190d812bea5fc339696e434c2e Mon Sep 17 00:00:00 2001
From: Michael Grzeschik <[email protected]>
Date: Wed, 12 Sep 2012 14:58:01 +0300
Subject: usb: chipidea: udc: add pullup fuction, needed by the uvc gadget
Add function to physicaly enable or disable of pullup connection on the USB-D+
line. The uvc gaget will fail, if this function is not implemented.
Cc: stable <[email protected]>
Signed-off-by: Michael Grzeschik <[email protected]>
Acked-by: Felipe Balbi <[email protected]>
Signed-off-by: Marc Kleine-Budde <[email protected]>
Signed-off-by: Alexander Shishkin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/chipidea/udc.c | 21 +++++++++++++++++----
1 file changed, 17 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 7801a3f..32ee870 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -78,8 +78,7 @@ static inline int ep_to_bit(struct ci13xxx *ci, int n)
}
/**
- * hw_device_state: enables/disables interrupts & starts/stops device (execute
- * without interruption)
+ * hw_device_state: enables/disables interrupts (execute without interruption)
* @dma: 0 => disable, !0 => enable and set dma engine
*
* This function returns an error code
@@ -91,9 +90,7 @@ static int hw_device_state(struct ci13xxx *ci, u32 dma)
/* interrupt, error, port change, reset, sleep/suspend */
hw_write(ci, OP_USBINTR, ~0,
USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI);
- hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
} else {
- hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
hw_write(ci, OP_USBINTR, ~0, 0);
}
return 0;
@@ -1420,6 +1417,21 @@ static int ci13xxx_vbus_draw(struct usb_gadget *_gadget,
unsigned mA)
return -ENOTSUPP;
}
+/* Change Data+ pullup status
+ * this func is used by usb_gadget_connect/disconnet
+ */
+static int ci13xxx_pullup(struct usb_gadget *_gadget, int is_on)
+{
+ struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget);
+
+ if (is_on)
+ hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
+ else
+ hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
+
+ return 0;
+}
+
static int ci13xxx_start(struct usb_gadget *gadget,
struct usb_gadget_driver *driver);
static int ci13xxx_stop(struct usb_gadget *gadget,
@@ -1432,6 +1444,7 @@ static int ci13xxx_stop(struct usb_gadget *gadget,
static const struct usb_gadget_ops usb_gadget_ops = {
.vbus_session = ci13xxx_vbus_session,
.wakeup = ci13xxx_wakeup,
+ .pullup = ci13xxx_pullup,
.vbus_draw = ci13xxx_vbus_draw,
.udc_start = ci13xxx_start,
.udc_stop = ci13xxx_stop,
--
1.7.12.176.g3fc0e4c
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
