diff options
| author | Bjorn Andersson <quic_bjorande@quicinc.com> | 2023-05-14 20:27:40 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-05-19 23:17:19 +0530 |
| commit | 2851117f8f4218043e4c05d24494fee66e932cbe (patch) | |
| tree | 5c894920e541cad4dcb3e767b2ce659f62282cb3 /drivers/phy/qualcomm/Kconfig | |
| parent | 815891eee668795deea07f5d1eb43e0d6089c930 (diff) | |
phy: qcom-qmp-combo: Introduce orientation switching
The data lanes of the QMP PHY is swapped in order to handle changing
orientation of the USB Type-C cable. Register a typec_switch device to
allow a TCPM to configure the orientation.
The newly introduced orientation variable is adjusted based on the
request, and the initialized components are brought down and up again.
To keep track of what parts needs to be cycled new variables to keep
track of the individual init_count is introduced.
Both the USB and the DisplayPort altmode signals are properly switched.
For DisplayPort the controller will after the TCPM having established
orientation power on the PHY, so this is not done implicitly, but for
USB the PHY typically is kept initialized across the switch, and must
therefore then be reinitialized.
This is based on initial work by Wesley Cheng.
Link: https://lore.kernel.org/r/20201009082843.28503-3-wcheng@codeaurora.org/
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Tested-by: Abel Vesa <abel.vesa@linaro.org>
Tested-by: Steev Klimaszewski <steev@kali.org>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on HDK8450
Tested-by: Johan Hovold <johan+linaro@kernel.org> # X13s
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Link: https://lore.kernel.org/r/20230515032743.400170-6-quic_bjorande@quicinc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/phy/qualcomm/Kconfig')
| -rw-r--r-- | drivers/phy/qualcomm/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig index 4850d48f31fa..45330e0f66fe 100644 --- a/drivers/phy/qualcomm/Kconfig +++ b/drivers/phy/qualcomm/Kconfig @@ -59,6 +59,7 @@ if PHY_QCOM_QMP config PHY_QCOM_QMP_COMBO tristate "Qualcomm QMP Combo PHY Driver" default PHY_QCOM_QMP + depends on TYPEC || TYPEC=n select GENERIC_PHY select MFD_SYSCON help |