linux/drivers/gpu/drm/amd/display/modules, branch v5.15

drm/amd/display: Fix deadlock when falling back to v2 from v3

2021-10-28T02:04:50Z

[Why] A deadlock in the kernel occurs when we fallback from the V3 to V2 add_topology_to_display or remove_topology_to_display because they both try to acquire the dtm_mutex but recursive locking isn't supported on mutex_lock(). [How] Make the mutex_lock/unlock more fine grained and move them up such that they're only required for the psp invocation itself. Fixes: bf62221e9d0e ("drm/amd/display: Add DCN3.1 HDCP support") Signed-off-by: Nicholas Kazlauskas Reviewed-by: Aric Cyr Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org

drm/amd: consolidate TA shared memory structures

2021-08-18T22:22:53Z

Signed-off-by: Candice Li Reviewed-by: John Clements Signed-off-by: Alex Deucher

drm/amd/display: add authentication_complete in hdcp output

2021-08-09T19:43:33Z

[why] DM needs to be notified when hdcp module has completed authentication attempt. Reviewed-by: Bhawanpreet Lakha Reviewed-by: George Shen Acked-by: Anson Jacob Signed-off-by: Wenjing Liu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: remove unused functions

2021-07-28T20:37:17Z

[why] It has been decided that opm state query support will be dropped. Therefore link encryption enabled and save current encryption states won't be used anymore and there are no foreseeable usages in the future. We will remove these two interfaces for clean up. Acked-by: Solomon Chiu Signed-off-by: Wenjing Liu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: add update authentication interface

2021-07-28T20:37:17Z

[why] Previously to toggle authentication, we need to remove and add the same display back with modified adjustment. This method will toggle DTM state without actual hardware changes. This is not per design and would cause potential issues in the long run. [how] We are creating a dedicated interface that does the same thing as remove and add back the display without changing DTM state. Acked-by: Solomon Chiu Signed-off-by: Wenjing Liu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amdgpu/display: fold DRM_AMD_DC_DCN3_1 into DRM_AMD_DC_DCN

2021-06-22T20:51:45Z

No need for a separate flag now that DCN3.1 is not in bring up. Fold into DRM_AMD_DC_DCN like previous DCN IPs. Reviewed-by: Nicholas Kazlauskas Signed-off-by: Alex Deucher

drm/amd/display: tune backlight ramping profiles

2021-06-15T21:25:40Z

[Why & How] Tune backlight ramping profiles for each Vari-Bright level to suit customer preferences Signed-off-by: Josip Pavic Reviewed-by: Anthony Koo Acked-by: Anson Jacob Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: delay 100ms before restart after failing to read CP_IRQ

2021-06-08T16:15:54Z

[why] Some DPRX will issue CP_IRQ when user disconnects a display that has been authenticated. Since display is being disconnecting dpcd read will fail. This will cause us to attempt HDCP retry on disconnection. We are adding a 100ms delay before retry. So we will only start retry if within 100ms there is no disconnection call to HDCP module. Signed-off-by: Wenjing Liu Reviewed-by: Nicholas Kazlauskas Acked-by: Stylon Wang Signed-off-by: Alex Deucher

drm/amd/display: Add DCN3.1 HDCP support

2021-06-04T20:39:18Z

New DTM interface is V3 and we need to extend our existing support to enable HDCP on DCN3.1. Version the helpers and fallback to the older versions on failure in the new interfaces. Acked-by: Huang Rui Signed-off-by: Nicholas Kazlauskas Signed-off-by: Alex Deucher

drm/amd/display: Avoid HDCP over-read and corruption

2021-06-02T02:55:39Z

Instead of reading the desired 5 bytes of the actual target field, the code was reading 8. This could result in a corrupted value if the trailing 3 bytes were non-zero, so instead use an appropriately sized and zero-initialized bounce buffer, and read only 5 bytes before casting to u64. Signed-off-by: Kees Cook Signed-off-by: Alex Deucher