[v4,0/5] USB DWC3 host wake up support from system suspend

Message

Sandeep Maheswaram Oct. 27, 2020, 8:37 p.m. UTC

Avoiding phy powerdown in host mode so that it can be wake up by devices.
Set GENPD_FLAG_ACTIVE_WAKEUP flag to keep usb30_prim gdsc active
when wakeup capable devices are connected to the host.
Using PDC interrupts instead of GIC interrupst to support wakeup in
xo shutdown case.

Changes in v4:
Addressed Matthias comments raised in v3.

Changes in v3:
Removed need_phy_for_wakeup flag and by default avoiding phy powerdown.
Addressed Matthias comments and added entry for DEV_SUPERSPEED.
Added suspend_quirk in dwc3 host and moved the dwc3_set_phy_speed_flags.
Added wakeup-source dt entry and reading in dwc-qcom.c glue driver.

Changes in v2:
Dropped the patch in clock to set GENPD_FLAG_ACTIVE_WAKEUP flag and 
setting in usb dwc3 driver.
Separated the core patch and glue driver patch.
Made need_phy_for_wakeup flag part of dwc structure and 
hs_phy_flags as unsgined int.
Adrressed the comment on device_init_wakeup call.
Corrected offset for reading portsc register.
Added pacth to support wakeup in xo shutdown case.

Sandeep Maheswaram (5):
  usb: dwc3: core: Host wake up support from system suspend
  usb: dwc3: host: Add suspend_quirk for dwc3 host
  usb: dwc3: qcom: Configure wakeup interrupts and set genpd active
    wakeup flag
  arm64: dts: qcom: sc7180: Use pdc interrupts for USB instead of GIC
    interrupts
  arm64: dts: qcom: sc7180: Add wakeup-source property for USB node in
    IDP and trogdor

 arch/arm64/boot/dts/qcom/sc7180-idp.dts      |  1 +
 arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi |  1 +
 arch/arm64/boot/dts/qcom/sc7180.dtsi         |  8 +--
 drivers/usb/dwc3/core.c                      | 14 +----
 drivers/usb/dwc3/core.h                      |  2 +
 drivers/usb/dwc3/dwc3-qcom.c                 | 82 ++++++++++++++++++----------
 drivers/usb/dwc3/host.c                      | 51 +++++++++++++++++
 7 files changed, 114 insertions(+), 45 deletions(-)