kernel/linux.git/drivers/gpu/drm/amd/display/dc/dce, branch v5.19

drm/amd/display: Check if modulo is 0 before dividing.

2022-05-26T18:56:30+00:00

[How & Why] If a value of 0 is read, then this will cause a divide-by-0 panic. Reviewed-by: Martin Leung Acked-by: Qingqing Zhuo Signed-off-by: David Galiffi Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: clear request when release aux engine

2022-05-26T18:56:30+00:00

[Why] when driver and dmub request aux engine at the same time, dmub grant the aux engine but driver fail. Then driver release aux engine but doesn't clear the request bit. Then aux engine will be occupied by driver forever. [How] When driver release aux engine, clear request bit as well. Reviewed-by: Anthony Koo Acked-by: Qingqing Zhuo Signed-off-by: Paul Hsieh Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: remove redundant CONFIG_DRM_AMD_DC_DCN in dce

2022-05-10T21:53:12+00:00

[Why & How] CONFIG_DRM_AMD_DC_DCN is used by pass the compilation failures, but DC code should be OS-agnostic. This patch fixes it by removing unnecessasry CONFIG_DRM_AMD_DC_DCN in dce directory. Reviewed-by: Rodrigo Siqueira Acked-by: Stylon Wang Signed-off-by: Alex Hung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: fix non-kernel-doc comment warnings

2022-04-26T15:43:08+00:00

Fix kernel-doc warnings for a comment that should not use kernel-doc notation: dmub_psr.c:235: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Set PSR power optimization flags. dmub_psr.c:235: warning: missing initial short description on line: * Set PSR power optimization flags. Fixes: e5dfcd272722 ("drm/amd/display: dc_link_set_psr_allow_active refactoring") Signed-off-by: Randy Dunlap Reported-by: kernel test robot Cc: Robin Chen Cc: Alex Deucher Cc: Anthony Koo Cc: amd-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Cc: David Airlie Cc: Daniel Vetter Cc: Harry Wentland Cc: Leo Li Cc: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: Remove useless code

2022-04-21T19:59:46+00:00

aux_rep only memset but no use at all, so we drop it. Signed-off-by: Haowen Bai Signed-off-by: Alex Deucher

drm/amd/display: Select correct DTO source

2022-04-12T18:20:13+00:00

[WHY&HOW] Change criteria for setting DTO source value, and always set it regardless of the signal type. Reviewed-by: Ariel Bernstein Acked-by: Pavle Kotarac Signed-off-by: Dillon Varone Signed-off-by: Alex Deucher

drm/amd/display: Fix pointer dereferenced before checking

2022-04-01T03:05:54+00:00

The value actual_pix_clk_100Hz is dereferencing pointer pix_clk_params before pix_clk_params is being null checked. Fix this by assigning pix_clk_params->requested_pix_clk_100hz to actual_pix_clk_100Hz only if pix_clk_params is not NULL, otherwise just NULL. Signed-off-by: Haowen Bai Signed-off-by: Alex Deucher

drm/amd/display: Update engine ddc

2022-03-15T18:41:22+00:00

[Why] Crash caused by a ddc update failure [How] Update engine ddc before release engine. Reviewed-by: Wyatt Wood Reviewed-by: Aric Cyr Acked-by: Agustin Gutierrez Signed-off-by: Jing Zhou Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Add I2C escape to support query device exist.

2022-03-15T18:41:03+00:00

[How] 1. Search OEM I2C info from BIOS and compare with input parameter. 2. If BIOS doesn't record it, just try to read one byte. Reviewed-by: Aric Cyr Acked-by: Agustin Gutierrez Signed-off-by: JinZe.Xu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: merge two duplicated clock_source_create

2022-03-15T18:25:15+00:00

[why] dcn31x could use dcn31 sepcific which contains deep_color_ratio for dmub Reviewed-by: Nevenko Stupar Reviewed-by: Hansen Dsouza Reviewed-by: Aric Cyr Acked-by: Alan Liu Signed-off-by: Charlene Liu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher