diff options
| author | Prashanth K <quic_prashk@quicinc.com> | 2023-02-24 08:46:59 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-09 17:31:15 +0300 |
| commit | 2ae4e0dea3b0c7b380821bac05e03a71da1f452f (patch) | |
| tree | 1cad5c829c6d4e74138e3d9bb3342300cab84729 /drivers/usb/gadget/composite.c | |
| parent | 4decf4060ecfee1f7a710999fcd421645ac0c419 (diff) | |
| download | linux-2ae4e0dea3b0c7b380821bac05e03a71da1f452f.tar.xz | |
usb: gadget: composite: Draw 100mA current if not configured
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>
Diffstat (limited to 'drivers/usb/gadget/composite.c')
| -rw-r--r-- | drivers/usb/gadget/composite.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index fa7dd6cf014d..36add1879ed2 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -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; |