kernel/linux.git/include/linux/usb/pd.h, branch v4.19.165

usb: typec: tcpm: During PR_SWAP, source caps should be sent only after tSwapSourceStart

2020-11-05T10:08:40+00:00

[ Upstream commit 6bbe2a90a0bb4af8dd99c3565e907fe9b5e7fd88 ] The patch addresses the compliance test failures while running TD.PD.CP.E3, TD.PD.CP.E4, TD.PD.CP.E5 of the "Deterministic PD Compliance MOI" test plan published in https://www.usb.org/usbc. For a product to be Type-C compliant, it's expected that these tests are run on usb.org certified Type-C compliance tester as mentioned in https://www.usb.org/usbc. The purpose of the tests TD.PD.CP.E3, TD.PD.CP.E4, TD.PD.CP.E5 is to verify the PR_SWAP response of the device. While doing so, the test asserts that Source Capabilities message is NOT received from the test device within tSwapSourceStart min (20 ms) from the time the last bit of GoodCRC corresponding to the RS_RDY message sent by the UUT was sent. If it does then the test fails. This is in line with the requirements from the USB Power Delivery Specification Revision 3.0, Version 1.2: "6.6.8.1 SwapSourceStartTimer The SwapSourceStartTimer Shall be used by the new Source, after a Power Role Swap or Fast Role Swap, to ensure that it does not send Source_Capabilities Message before the new Sink is ready to receive the Source_Capabilities Message. The new Source Shall Not send the Source_Capabilities Message earlier than tSwapSourceStart after the last bit of the EOP of GoodCRC Message sent in response to the PS_RDY Message sent by the new Source indicating that its power supply is ready." The patch makes sure that TCPM does not send the Source_Capabilities Message within tSwapSourceStart(20ms) by transitioning into SRC_STARTUP only after tSwapSourceStart(20ms). Signed-off-by: Badhri Jagan Sridharan Reviewed-by: Guenter Roeck Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20200817183828.1895015-1-badhri@google.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

usb: pd: include kernel.h

2018-06-28T10:52:07+00:00

This makes life a bit easier for the drivers that include pd.h. All pd_header_*_le() inline functions defined in pd.h call le16_to_cpu(), and all *_LE() macros in pd.h call cpu_to_le16(). Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman

typec: tcpm: Add core support for sink side PPS

2018-04-25T12:16:00+00:00

This commit adds code to handle requesting of PPS APDOs. Switching between standard PDOs and APDOs, and re-requesting an APDO to modify operating voltage/current will be triggered by an external call into TCPM. Signed-off-by: Adam Thomson Acked-by: Heikki Krogerus Reviewed-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman

typec: tcpm: Add PD Rev 3.0 definitions to PD header

2018-03-09T17:21:40+00:00

This commit adds definitions for PD Rev 3.0 messages, including APDO PPS and extended message support for TCPM. Signed-off-by: Adam Thomson Acked-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman

typec: tcpm: Validate source and sink caps

2017-12-07T15:03:15+00:00

The source and sink caps should follow the following rules. This patch validates whether the src_caps/snk_caps adheres to it. 6.4.1 Capabilities Message A Capabilities message (Source Capabilities message or Sink Capabilities message) shall have at least one Power Data Object for vSafe5V. The Capabilities message shall also contain the sending Port’s information followed by up to 6 additional Power Data Objects. Power Data Objects in a Capabilities message shall be sent in the following order: 1. The vSafe5V Fixed Supply Object shall always be the first object. 2. The remaining Fixed Supply Objects, if present, shall be sent in voltage order; lowest to highest. 3. The Battery Supply Objects, if present shall be sent in Minimum Voltage order; lowest to highest. 4. The Variable Supply (non-battery) Objects, if present, shall be sent in Minimum Voltage order; lowest to highest. Errors in source/sink_caps of the local port will prevent the port registration. Whereas, errors in source caps of partner device would only log them. Signed-off-by: Badhri Jagan Sridharan Acked-by: Heikki Krogerus Reviewed-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman

typec: tcpm: Move out of staging

2017-09-18T08:58:31+00:00

Move tcpm (USB Type-C Port Manager) out of staging. Signed-off-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman