[PATCH v10 4/8] usb: chipidea: udc: add pullup/pulldown dp at hw_device_state

Peter Chen
2013-02-27T06:33:15Z

- 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
- Using hw_device_state when set run/stop bit

Signed-off-by: Peter Chen <peter.chen@freescale.com>
---
drivers/usb/chipidea/udc.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index e82dae4..597ae64 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -91,8 +91,10 @@ 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;
}
@@ -1424,10 +1426,14 @@ 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 -ENOTSUPP;
+
if (is_on)
- hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
+ hw_device_state(ci, ci->ep0out->qh.dma);
else
- hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
+ hw_device_state(ci, 0);

return 0;
}
--
1.7.0.4