kernel/linux.git/drivers/gpu/drm/amd/display/modules/hdcp, branch v5.10.46

drm/amd/display: add handling for hdcp2 rx id list validation

2021-05-19T08:12:58+00:00

[ Upstream commit 4ccf9446b2a3615615045346c97f8a1e2a16568a ] [why] the current implementation of hdcp2 rx id list validation does not have handler/checker for invalid message status, e.g. HMAC, the V parameter calculated from PSP not matching the V prime from Rx. [how] return a generic FAILURE for any message status not SUCCESS or REVOKED. Signed-off-by: Dingchen (David) Zhang Reviewed-by: Bhawanpreet Lakha Acked-by: Aurabindo Pillai Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amd/display: Don't log hdcp module warnings in dmesg

2020-09-17T21:56:47+00:00

[Why] DTM topology updates happens by default now. This results in DTM warnings when hdcp is not even being enabled. This spams the dmesg and doesn't effect normal display functionality so it is better to log it using DRM_DEBUG_KMS() [How] Change the DRM_WARN() to DRM_DEBUG_KMS() Signed-off-by: Bhawanpreet Lakha Acked-by: Alex Deucher Reviewed-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: Don't use DRM_ERROR() for DTM add topology

2020-09-15T21:52:41+00:00

[Why] Previously we were only calling add_topology when hdcp was being enabled. Now we call add_topology by default so the ERROR messages are printed if the firmware is not loaded. This error message is not relevant for normal display functionality so no need to print a ERROR message. [How] Change DRM_ERROR to DRM_INFO Signed-off-by: Bhawanpreet Lakha Acked-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/display: Fix CP_IRQ clear bit and logic

2020-09-15T21:52:40+00:00

[Why] Currently clearing the wrong bit for CP_IRQ, and logic on when to clear needs to be fixed. [How] Corrected bit to clear and improved logic for decision to clear. Signed-off-by: Harmanprit Tatla Acked-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/display: Add CP_IRQ clear capability

2020-09-15T21:52:40+00:00

[Why] Currently we do not clear the CP_IRQ bit upon receiving it. [How] Added a function to clear CP_IRQ bit. Signed-off-by: Harmanprit Tatla Acked-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/display: fix typo

2020-04-09T14:43:16+00:00

[why] MOD_HDCP_STATUS_HDCP1_ENABLE_ENCRYPTION and MOD_HDCP_STATUS_HDCP2_ENABLE_ENCRYPTION were supposed to be MOD_HDCP_STATUS_HDCP1_ENABLE_ENCRYPTION_FAILURE and MOD_HDCP_STATUS_HDCP2_ENABLE_ENCRYPTION_FAILURE. Because of this it always seems like mod_hdcp_hdcp1_enable_encryption and mod_hdcp_hdcp2_enable_encryption are always passing [how] rename the elements to what they were supposed to be called Signed-off-by: Joseph Gravenor Reviewed-by: Wenjing Liu Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: Remove hdcp display state with mst fix

2020-04-09T14:43:16+00:00

[Why] Due to previous code changes, displays transition from active to active and added state immediately, making it redundant to have both display states. Previous change to fix this caused HDCP to get into a bad state when monitor is connected to MST hub, this change fixes that issue. [How] Change code behavior so when a device is added successfully the state remains as active and when addition is unsuccessful change state to inactive. This removes need for added and active state. Signed-off-by: Isabel Zhang Reviewed-by: Wenjing Liu Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: Guard calls to hdcp_ta and dtm_ta

2020-04-03T21:01:18+00:00

[Why] The buffer used when calling psp is a shared buffer. If we have multiple calls at the same time we can overwrite the buffer. [How] Add mutex to guard the shared buffer. Signed-off-by: Bhawanpreet Lakha Reviewed-by: Nicholas Kazlauskas Signed-off-by: Alex Deucher

drm/amd/display: remove mod_hdcp_hdcp2_get_link_encryption_status()

2020-04-03T21:01:02+00:00

It is not being used, so remove it Signed-off-by: Bhawanpreet Lakha Reviewed-by: Nicholas Kazlauskas Signed-off-by: Alex Deucher

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

2020-03-31T16:26:14+00:00

[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