diff options
| author | Ray Chi <raychi@google.com> | 2021-02-22 19:51:49 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-10 09:37:14 +0100 |
| commit | 99288de36020c5a6976df77e53ac449b0f75c97f (patch) | |
| tree | d6805fff34426607b0deecb756384470e9ae1e01 /drivers/usb | |
| parent | 6f0764b5adea18d70c3fab32d5f940678bcbd865 (diff) | |
usb: dwc3: add an alternate path in vbus_draw callback
This patch adds an alternate path in vbus_draw callback through
power supply property POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT.
Signed-off-by: Ray Chi <raychi@google.com>
Link: https://lore.kernel.org/r/20210222115149.3606776-3-raychi@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index aebcf8ec0716..47809835e163 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2530,11 +2530,19 @@ static void dwc3_gadget_set_ssp_rate(struct usb_gadget *g, static int dwc3_gadget_vbus_draw(struct usb_gadget *g, unsigned int mA) { struct dwc3 *dwc = gadget_to_dwc(g); + union power_supply_propval val = {0}; + int ret; if (dwc->usb2_phy) return usb_phy_set_power(dwc->usb2_phy, mA); - return 0; + if (!dwc->usb_psy) + return -EOPNOTSUPP; + + val.intval = mA; + ret = power_supply_set_property(dwc->usb_psy, POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, &val); + + return ret; } static const struct usb_gadget_ops dwc3_gadget_ops = { |