[v2,00/13] Add support mtu3 gadget (runtime) PM

This series mainly adds support for mtu3 gadget suspend/resume when
the controller works at device only mode or dual role mode, and also
adds support runtime PM.

v2:
  Change the comment of cover letter and its title.

  In order to help review, v2 drops the patches about role-switch
  rebuilding which are applied, and the left ones are identical.


Chunfeng Yun (13):
  dt-bindings: usb: mtu3: remove support VBUS detection of extcon
  dt-bindings: usb: mtu3: add optional property to disable usb2 ports
  dt-bindings: usb: mtu3: add support property role-switch-default-mode
  dt-bindings: usb: mtu3: add wakeup interrupt
  usb: common: add helper to get role-switch-default-mode
  usb: dwc3: drd: use helper to get role-switch-default-mode
  usb: mtu3: support property role-switch-default-mode
  usb: mtu3: support option to disable usb2 ports
  usb: mtu3: add new helpers for host suspend/resume
  usb: mtu3: support runtime PM for host mode
  usb: mtu3: add helper to power on/down device
  usb: mtu3: support suspend/resume for device mode
  usb: mtu3: support suspend/resume for dual-role mode

 .../bindings/usb/mediatek,mtu3.yaml           |  47 ++++-
 drivers/usb/common/common.c                   |  20 +++
 drivers/usb/dwc3/drd.c                        |   8 +-
 drivers/usb/mtu3/mtu3.h                       |   8 +
 drivers/usb/mtu3/mtu3_core.c                  | 115 ++++++++++--
 drivers/usb/mtu3/mtu3_dr.c                    |  26 ++-
 drivers/usb/mtu3/mtu3_dr.h                    |  30 +++-
 drivers/usb/mtu3/mtu3_gadget.c                |   5 +
 drivers/usb/mtu3/mtu3_host.c                  | 106 +++++++++--
 drivers/usb/mtu3/mtu3_plat.c                  | 164 +++++++++++++++---
 include/linux/usb/otg.h                       |   1 +
 11 files changed, 456 insertions(+), 74 deletions(-)

On Fri, 18 Jun 2021 17:29:06 +0800, Chunfeng Yun wrote:
> Due to no platforms use a multi-funtion pin to detect VBUS
> status until now when support dual role mode, prefer not to
> support it anymore;
> Another reason is that the controller doesn't support idle status,
> the dual role port works as device or as host, using an IDDIG pin
> is good enough, this will help to save another multi-function pin;
> And fix a typo of 'neede';
> Last modify example using VBUS to turn on/off device, for device
> only mode, the driver doesn't get extcon.
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
> ---
> v2: no changes
> ---
>  .../bindings/usb/mediatek,mtu3.yaml           | 22 +++++++++++++++----
>  1 file changed, 18 insertions(+), 4 deletions(-)
> 

Acked-by: Rob Herring <robh@kernel.org>

On Fri, 18 Jun 2021 17:29:08 +0800, Chunfeng Yun wrote:
> Add support optional property of role-switch-default-mode,
> used to set default mode while usb role is USB_ROLE_NONE when use
> usb-role-switch to switch mode.
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
> ---
> v2: no changes
> ---
>  Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml | 6 ++++++
>  1 file changed, 6 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>