linux/drivers/gpu/drm/amd/display/modules, branch v5.7

drm/amd/display: LFC not working on 2.0x range monitors (v2)

2020-03-31T16:26:14Z

[Why] Nominal pixel clock and EDID information differ in precision so although monitor reports maximum refresh is 2x minimum, LFC was not being enabled. [How] Use minimum refresh rate as nominal/2 when EDID dictates that min refresh = max refresh/2. v2: squash in 64 bit divide fix Signed-off-by: Aric Cyr Reviewed-by: Nicholas Kazlauskas Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: Revert change to HDCP display states

2020-03-31T16:26:14Z

[Why] Change is causing a regression where the OPC app no longer functions properly. [How] Revert the changelist causing the issue. Signed-off-by: Isabel Zhang Reviewed-by: Yongqiang Sun Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: differentiate vsc sdp colorimetry use criteria between MST and SST

2020-03-19T04:03:04Z

[Why] We should check MST BU support capability on output port before building vsc info packet. [How] Add a new definition for port and sink capability check. Signed-off-by: Martin Tsai Reviewed-by: Wenjing Liu Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: remove magic numbers in hdcp_ddc

2020-03-19T04:03:04Z

[why] DP doesn't have message id as the first byte of an hdcp message, current hdcp psp unifies HDMI and DP message so that it is required when reading DP HDCP messages in hdcp_ddc, a message id needs to be added as the first byte of the HDCP message. The id is currently assigned as a magic number which is not a good coding practice. [how] Replace magic numbers with macro defined in hdcp headers. Signed-off-by: Wenjing Liu Reviewed-by: Ashley Thomas Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: Remove redundant hdcp display state

2020-03-19T04:03:04Z

[Why] Due to previous code changes displays which are in active state immediately transition to the active and added state. This makes the two states redundant and unnecessary. [How] Instead of updating the device state to active and added after successful addition, change state to inactive if addition failed. Also, change references to active and added state to just added state. Signed-off-by: Isabel Zhang Reviewed-by: Wenjing Liu Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: fix a minor HDCP logging error

2020-03-09T17:49:54Z

[why] In HDCP Uninitialzed State, a CPIRQ event would cause log output internal policy error because the CPIRQ event is not recognized as unexpected event. [how] CPIRQ is issued in HDCP uninitialized state is unexpected. We should set unexpected event flag in event ctx. Signed-off-by: Wenjing Liu Reviewed-by: Ashley Thomas Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: determine rx id list bytes to read based on device count

2020-03-09T17:49:40Z

[why] Some RX doesn't like us to read rx id list upto max rx id list size. As discussed, we decided to read rx id list based on device count. [how] According to HDCP specs the actual size of rx id list is calculated as rx id list size = 2+3+16+5*device_count. We will read 16 bytes at a time until it reached or exceeded rx id list size. Signed-off-by: Wenjing Liu Reviewed-by: Ashley Thomas Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: determine is mst hdcp based on stream instead of sink signal

2020-03-09T17:49:06Z

[why] It is possible even if sink signal is MST but driver enables SST stream. We should not determine if we should do MST authentication based on sink's capability. Instead we should determine whether to do MST authentication based on what we have enabled in stream. Signed-off-by: Wenjing Liu Reviewed-by: Ashley Thomas Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: Add stay count and bstatus to HDCP log

2020-03-09T17:48:59Z

[Why] So the values of stay count and bstatus can be easily viewed during debugging. [How] Add stay count and bstatus values to be outputted in HDCP log Signed-off-by: Isabel Zhang Reviewed-by: Wenjing Liu Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: Workaround to do HDCP authentication twice on certain displays

2020-03-05T05:30:04Z

[Why] When transitioning from SST to MST, the HDCP repeater in some MST displays will enter a bad state. The HDCP repeater is recovered after failing and performing authentication again. [How] Add monitor patch to trigger HDCP authentication failure after encryption is enabled and re-authenticate. Signed-off-by: George Shen Reviewed-by: Wenjing Liu Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher