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2020-10-02usb: typec: add support for STUSB160x Type-C controller familyAmelie Delaunay3-0/+888
STMicroelectronics USB Type-C port controllers use I2C interface to configure, control and read the operation status of the device. All ST USB Type-C port controllers are based on the same I2C register map. That's why this driver can be used with all ST USB Type-C ICs. Some ST USB Type-C port controllers are Dual Role Port (DRP), only Sink or Source, some supports USB Power Delivery. This can be configured through connector device tree bindings. This driver is a basic Type-C port controller driver, with no power delivery support. It allows to configure ST USB Type-C port controller. Interrupt is supported and enables CC connection events, to detect attach and detach and update Type-C subsystem accordingly as well as usb role switch. ST USB Type-C port controller can be supplied in three different ways depending on the target application: - through VDD pin only (so VDD is the main supply) - through VSYS pin only (so VSYS is the main supply) - through VDD and VSYS pins. When both VDD and VSYS power supplies are present, the low power supply VSYS is selected as main supply when VSYS voltage is above 3.1V, else VDD is selected as main supply. In case of Source or Dual port type, if VDD supply is present, it has to be enabled in case of Source power role to provide Vbus. When interrupt support is available, VDD supply is dynamically managed upon attach/detach interrupt. When there is no interrupt support, VDD supply is enabled by default. Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Link: https://lore.kernel.org/r/20200924090049.9041-5-amelie.delaunay@st.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02usb: typec: add typec_find_pwr_opmodeAmelie Delaunay2-0/+16
This patch adds a function that converts power operation mode string into power operation mode value. It is useful to configure power operation mode through device tree property, as power capabilities may be linked to hardware design. Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Link: https://lore.kernel.org/r/20200924090049.9041-3-amelie.delaunay@st.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02usb: typec: hd3ss3220: Use OF graph API to get the connector fwnodeBiju Das1-4/+14
Some platforms have only super speed data bus connected to this device and high speed data bus directly connected to the SoC. In such platforms modelling connector as a child of this device is making it non compliant with usb connector bindings. By modelling connector node as standalone device node along with this device and the SoC data bus will make it compliant with usb connector bindings. Update the driver to handle this model by using OF graph API to get the connector fwnode and usb role switch class API to get role switch handle. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20200920134905.4370-5-biju.das.jz@bp.renesas.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02dt-bindings: usb: renesas,usb3-peri: Document HS and SS data busBiju Das1-5/+29
Document HS and SS data bus for the "usb-role-switch" enabled case. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200920134905.4370-4-biju.das.jz@bp.renesas.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02dt-bindings: usb: convert ti,hd3ss3220 bindings to json-schemaLad Prabhakar2-38/+82
Convert ti,hd3ss3220.txt to YAML. Updated the binding documentation as graph bindings of this device model Super Speed (SS) data bus to the Super Speed (SS) capable connector. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20200920134905.4370-3-biju.das.jz@bp.renesas.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02usb: dwc2: Fix INTR OUT transfers in DDMA mode.Minas Harutyunyan1-7/+33
In DDMA mode if INTR OUT transfers mps not multiple of 4 then single packet corresponds to single descriptor. Descriptor limit set to mps and desc chain limit set to mps * MAX_DMA_DESC_NUM_GENERIC. On that descriptors complete, to calculate transfer size should be considered correction value for each descriptor. In start request function, if "continue" is true then dma buffer address should be incremmented by offset for all type of transfers, not only for Control DATA_OUT transfers. Fixes: cf77b5fb9b394 ("usb: dwc2: gadget: Transfer length limit checking for DDMA") Fixes: e02f9aa6119e0 ("usb: dwc2: gadget: EP 0 specific DDMA programming") Fixes: aa3e8bc81311e ("usb: dwc2: gadget: DDMA transfer start and complete") Signed-off-by: Minas Harutyunyan <hminas@synopsys.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-10-02usb: dwc2: don't use ID/Vbus detection if usb-role-switch on STM32MP15 SoCsAmelie Delaunay1-1/+1
If usb-role-switch is present in the device tree, it means that ID and Vbus signals are not connected to the OTG controller but to an external component (GPIOs, Type-C controller). In this configuration, usb role switch is used to force valid sessions on STM32MP15 SoCs. Acked-by: Minas Harutyunyan <hminas@synopsys.com> Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-10-02usb: dwc2: override PHY input signals with usb role switch supportAmelie Delaunay6-4/+210
This patch adds support for usb role switch to dwc2, by using overriding control of the PHY voltage valid and ID input signals. iddig signal (ID) can be overridden: - when setting GUSBCFG_FORCEHOSTMODE, iddig input pin is overridden with 1; - when setting GUSBCFG_FORCEDEVMODE, iddig input pin is overridden with 0. avalid/bvalid/vbusvalid signals can be overridden respectively with: - GOTGCTL_AVALOEN + GOTGCTL_AVALOVAL - GOTGCTL_BVALOEN + GOTGCTL_BVALOVAL - GOTGCTL_VBVALEN + GOTGCTL_VBVALOVAL It is possible to determine valid sessions thanks to usb role switch: - if USB_ROLE_NONE then !avalid && !bvalid && !vbusvalid - if USB_ROLE_DEVICE then !avalid && bvalid && vbusvalid - if USB_ROLE_HOST then avalid && !bvalid && vbusvalid Acked-by: Minas Harutyunyan <hminas@synopsys.com> Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-10-02dt-bindings: usb: dwc2: add optional usb-role-switch propertyAmelie Delaunay1-0/+4
This patch documents the usb-role-switch property in dwc2 bindings, now that usb-role-switch support is available in dwc2 driver. Acked-by: Minas Harutyunyan <hminas@synopsys.com> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-10-02usb: dwc3: of-simple: Add compatible string for Intel Keem Bay platformWan Ahmad Zainie1-0/+1
Add compatible string to use this generic glue layer to support Intel Keem Bay platform's dwc3 controller. Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@intel.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>