- During the connect/disconnect host, we need to pullup
and pulldown dp
- Make sure the dp is not pullup until the vbus is on when
flag CI13XXX_PULLUP_ON_VBUS is set
Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
---
drivers/usb/chipidea/udc.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index b52cb10..0ed2e1a 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -90,8 +90,10 @@ 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_USBINTR, ~0, 0);
+ hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
}
return 0;
}
@@ -1423,6 +1425,10 @@ static int ci13xxx_pullup(struct usb_gadget *_gadget, int is_on)
{
struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget);
+ if ((ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) &&
+ !ci->vbus_active)
+ return 0;
+
if (is_on)
hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
else
--
1.7.0.4
--
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