This commit:
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commit 637b78eb31e0b167ed913f1750bb645dfeda38f0
Author: Tomoya MORINAGA <tomoya.rohm@xxxxxxxxx>
Date: Fri Feb 3 16:14:18 2012 +0900
usb: gadget: pch_udc: Detecting VBUS through GPIO with interrupt
Problem:
pch_udc continues operation even if VBUS becomes Low.
pch_udc performs D+ pulling up before VBUS becomes High.
USB device should be controlled according to VBUS state.
Root cause:
The current pch_udc is not always monitoring VBUS.
Solution:
The change of VBUS is detected using an interrupt of GPIO.
If VBUS became Low, pch_udc handles 'disconnect'.
After VBUS became High, a pull improves D+, and pch_udc
handles 'connect'.
[ balbi@xxxxxx : make it actually compile ]
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@xxxxxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
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breaks the sparc builds in next:
http://kisskb.ellerman.id.au/kisskb/buildresult/5771890/
http://kisskb.ellerman.id.au/kisskb/buildresult/5771905/
Thanks,
Paul.
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