kernel/linux.git/drivers/gpu/drm/amd/display/modules/hdcp, branch linux-6.9.y

drm/amd/display: Check index msg_id before read or write

2024-07-11T10:50:59+00:00

[ Upstream commit 59d99deb330af206a4541db0c4da8f73880fba03 ] [WHAT] msg_id is used as an array index and it cannot be a negative value, and therefore cannot be equal to MOD_HDCP_MESSAGE_ID_INVALID (-1). [HOW] Check whether msg_id is valid before reading and setting. This fixes 4 OVERRUN issues reported by Coverity. Reviewed-by: Rodrigo Siqueira Acked-by: Wayne Lin Signed-off-by: Alex Hung Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amd/display: revert Exit idle optimizations before HDCP execution

2024-06-27T11:52:32+00:00

commit f2703a3596a279b0be6eeed4c500bdbaa8dc3ce4 upstream. why and how: causes black screen on PNP on DCN 3.5 This reverts commit f30a3bea92bd ("drm/amd/display: Exit idle optimizations before HDCP execution") Cc: Mario Limonciello Cc: Alex Deucher Reviewed-by: Nicholas Kazlauskas Acked-by: Wayne Lin Signed-off-by: Martin Leung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Exit idle optimizations before HDCP execution

2024-06-27T11:52:15+00:00

[ Upstream commit f30a3bea92bdab398531129d187629fb1d28f598 ] [WHY] PSP can access DCN registers during command submission and we need to ensure that DCN is not in PG before doing so. [HOW] Add a callback to DM to lock and notify DC for idle optimization exit. It can't be DC directly because of a potential race condition with the link protection thread and the rest of DM operation. Cc: Mario Limonciello Cc: Alex Deucher Reviewed-by: Charlene Liu Acked-by: Alex Hung Signed-off-by: Nicholas Kazlauskas Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amd/display: Return the correct HDCP error code

2024-03-20T17:12:59+00:00

[WHY & HOW] If the display is null when creating an HDCP session, return a proper error code. Cc: Mario Limonciello Cc: Alex Deucher Cc: stable@vger.kernel.org Acked-by: Alex Hung Signed-off-by: Rodrigo Siqueira Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Fix hdcp_log.h codestyle

2024-01-05T21:10:44+00:00

Place HDCP_EVENT_TRACE(hdcp, event) macro content inside do while loop to avoid if-else issues in hdcp_log.h file v2: fix up build (Alex) Signed-off-by: Marcelo Mendes Spessoto Junior Signed-off-by: Alex Deucher

drm/amd/display: Fix hdcp2_execution.c codestyle

2024-01-05T21:10:44+00:00

Remove braces for single statement if expressions and change comparison order for hdcp2_execution.c file Signed-off-by: Marcelo Mendes Spessoto Junior Signed-off-by: Alex Deucher

drm/amd/display: Fix hdcp_psp.h codestyle

2024-01-05T21:10:44+00:00

Fix identation inside enum and place expressions in define macros inside () for hdcp_psp.h file Signed-off-by: Marcelo Mendes Spessoto Junior Signed-off-by: Alex Deucher

drm/amd/display: Fix hdcp_psp.c codestyle

2024-01-05T21:10:43+00:00

Fix identation for hdcp_psp.c file Signed-off-by: Marcelo Mendes Spessoto Junior Signed-off-by: Alex Deucher

drm/amd/display: Fix hdcp1_execution.c codestyle

2024-01-05T21:10:43+00:00

Remove braces from single statement if expression in hdcp1_execution.c file Signed-off-by: Marcelo Mendes Spessoto Junior Signed-off-by: Alex Deucher

drm/amd/display: Drop CONFIG_DRM_AMD_DC_HDCP

2023-03-07T19:22:39+00:00

[Why & How] There is no reason we still need a config option for this. Reviewed-by: Wenjing Liu Acked-by: Qingqing Zhuo Signed-off-by: Harry Wentland Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher