linux-kernel - [PATCH v5 0/4] USB DWC3 host wake up support from system suspend

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Message-Id: <1616434280-32635-1-git-send-email-sanm@codeaurora.org>
Date:   Mon, 22 Mar 2021 23:01:16 +0530
From:   Sandeep Maheswaram <sanm@...eaurora.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Felipe Balbi <balbi@...nel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Doug Anderson <dianders@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Manu Gautam <mgautam@...eaurora.org>,
        Sandeep Maheswaram <sanm@...eaurora.org>
Subject: [PATCH v5 0/4] USB DWC3 host wake up support from system suspend

Avoiding phy powerdown in host mode when wakeup capable devices are 
connected, 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.

Changes in v5:
Added phy_power_off flag to check presence of wakeup capable devices.
Dropped patch[v4,4/5] as it is present linux-next.
Addressed comments in host.c and dwc3-qcom.c.

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 (4):
  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: 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 +
 drivers/usb/dwc3/core.c                      |  8 ++-
 drivers/usb/dwc3/core.h                      |  3 +
 drivers/usb/dwc3/dwc3-qcom.c                 | 87 ++++++++++++++++++----------
 drivers/usb/dwc3/host.c                      | 58 +++++++++++++++++++
 6 files changed, 124 insertions(+), 34 deletions(-)

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