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usb: gadget: composite: Draw 100mA current if not configured

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Currently we don't change the current value if device isn't in
configured state. But in battery charging specification (section
1.2 and 1.4.13), it is mentioned that the device can draw up to
100mA of current if it's in unconfigured state. Hence add vbus
draw work in composite_resume to draw 100mA if the device isn't
configured.

Signed-off-by: Prashanth K <quic_prashk@quicinc.com>
Link: https://lore.kernel.org/r/1677217619-10261-3-git-send-email-quic_prashk@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Prashanth K
2023-02-24 11:16:59 +05:30
committed by Greg Kroah-Hartman
parent 4decf4060e
commit 2ae4e0dea3
1 changed files with 4 additions and 0 deletions
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drivers/usb/gadget/composite.c
+4
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@@ -2531,6 +2531,10 @@ void composite_resume(struct usb_gadget *gadget)
usb_gadget_clear_selfpowered(gadget);
usb_gadget_vbus_draw(gadget, maxpower);
} else {
maxpower = CONFIG_USB_GADGET_VBUS_DRAW;
maxpower = min(maxpower, 100U);
usb_gadget_vbus_draw(gadget, maxpower);
}
cdev->suspended = 0;