Messages in this thread | | | From | Prashanth K <> | Subject | [PATCH v4 0/2] Fix vbus draw of dwc3 gadget | Date | Fri, 24 Feb 2023 11:16:57 +0530 |
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Changes in v4 - Added corresponding BC1.2 spec section in commit text
Changes in v3 - Fixed minor syntax error and warnings
Changes in v2 - Added min() calculation against CONFIG_USB_GADGET_VBUS_DRAW in case of unconfigured state.
Currently dwc3 gadget processes the suspend interrupt event only if the device is in configured state. But consider a case where device is not configured and got suspend interrupt, in that case our gadget would still use 100mA as composite_suspend didn't happen. But battery charging specification (BC1.2) expects a downstream device to draw less than 2.5mA when unconnected OR suspended.
And while resuming, the gadget can draw upto 100mA if its not configured, but the current implementation of composite_resume doesn't consider the case of unconfigured device. This series addresses the above mentioned issues.
Prashanth K (2): usb: dwc3: gadget: Change condition for processing suspend event usb: gadget: composite: Draw 100mA current if not configured
Prashanth K (2): usb: dwc3: gadget: Change condition for processing suspend event usb: gadget: composite: Draw 100mA current if not configured
drivers/usb/dwc3/gadget.c | 11 ++--------- drivers/usb/gadget/composite.c | 4 ++++ 2 files changed, 6 insertions(+), 9 deletions(-)
-- 2.7.4
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