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| author | Douglas Anderson | 2019-05-20 19:56:04 +0200 |
|---|---|---|
| committer | Felipe Balbi | 2019-06-18 10:58:28 +0200 |
| commit | c846b03ff767149d75d4d8dca6d3d4945a21074a (patch) | |
| tree | eb0e2dcdb7b697427ee610c252268fe08efd7b01 /drivers/usb/gadget/function/f_fs.c | |
| parent | ARM: dts: rockchip: Allow wakeup from rk3288-veyron's dwc2 USB ports (diff) | |
| download | kernel-qcow2-linux-c846b03ff767149d75d4d8dca6d3d4945a21074a.tar.gz kernel-qcow2-linux-c846b03ff767149d75d4d8dca6d3d4945a21074a.tar.xz kernel-qcow2-linux-c846b03ff767149d75d4d8dca6d3d4945a21074a.zip | |
USB: dwc2: Don't turn off the usbphy in suspend if wakeup is enabled
If the 'snps,need-phy-for-wake' is set in the device tree then:
- We know that we can wakeup, so call device_set_wakeup_capable().
The USB core will use this knowledge to enable wakeup by default.
- We know that we should keep the PHY on during suspend if something
on our root hub needs remote wakeup. This requires the patch (USB:
Export usb_wakeup_enabled_descendants()). Note that we don't keep
the PHY on at suspend time if it's not needed because it would be a
power draw.
If we later find some users of dwc2 that can support wakeup without
keeping the PHY on we may want to add a way to call
device_set_wakeup_capable() without keeping the PHY on at suspend
time.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/gadget/function/f_fs.c')
0 files changed, 0 insertions, 0 deletions