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path: root/drivers/gpu/drm/amd/display/dc/dpp/dcn30
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2025-04-07drm/amd/display: Remove double checks for `debug.enable_mem_low_power.bits.cm`Mario Limonciello
[Why] A variety of the 3DLUT handling functions check `debug.enable_mem_low_power.bits.cm` both in the caller and function. This is unnecessary overhead. [How] For each of them reduce to just checking just in caller or function. Reviewed-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-02-25drm/amd/display: handle max_downscale_src_width fail checkYihan Zhu
[WHY] If max_downscale_src_width check fails, we exit early from TAP calculation and left a NULL value to the scaling data structure to cause the zero divide in the DML validation. [HOW] Call set default TAP calculation before early exit in get_optimal_number_of_taps due to max downscale limit exceed. Reviewed-by: Samson Tam <samson.tam@amd.com> Signed-off-by: Yihan Zhu <Yihan.Zhu@amd.com> Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-10-22drm/amd/display: w/a to program DISPCLK_R_GATE_DISABLE DCN35Yihan Zhu
[WHY & HOW] Cursor corruption observed on USBC display with specific system setup with a reboot. Cursor memory might still in the lightsleep state due to voltage issue, we need program DISPCLK_R_GATE_DISABLE to avoid this issue only on DCN35. Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Yihan Zhu <Yihan.Zhu@amd.com> Signed-off-by: Wayne Lin <wayne.lin@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-06-14drm/amd/display: Remove redundant if conditionsIvan Lipski
[WHY] Coverity analysis flagged the two if conditions in dcn30_dpp.c and dcn401_dpp.c as DEADCODE since they are never true, since the variable 'program_prealpha_dealpha' is initialized at 0 and never chagnes. [HOW] Removed the variable 'program_prealpha_dealpha' and the if conditions. Acked-by: Zaeem Mohamed <zaeem.mohamed@amd.com> Signed-off-by: Ivan Lipski <ivlipski@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-06-14drm/amd/display: Guard reading 3DLUT registers for dcn32/dcn35Nicholas Kazlauskas
[Why] 3DLUT is not part of the DPP on DCN32/DCN35 ASIC and these registers now exist in MCM state. [How] Add guards when reading DPP state based on whether the register has a valid offset. Reviewed-by: Sung joon Kim <sungjoon.kim@amd.com> Acked-by: Zaeem Mohamed <zaeem.mohamed@amd.com> Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-30drm/amd/display: Remove unnecessary filesWayne Lin
[Why & How] We accidentally upstream unnecessary files. Remove them. Reviewed-by: Tom Chung <chiahsuan.chung@amd.com> Signed-off-by: Wayne Lin <Wayne.Lin@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-26drm/amd/display: Add misc DC changes for DCN401Aurabindo Pillai
Add miscellaneous changes to enable DCN401 init Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-26drm/amd/display: Fix uninitialized variables in DCAlex Hung
This fixes 49 UNINIT issues reported by Coverity. Reviewed-by: Hersen Wu <hersenxs.wu@amd.com> Acked-by: Wayne Lin <wayne.lin@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-16Revert "drm/amd/display: Enable cur_rom_en even if cursor degamma is not ↵Rodrigo Siqueira
enabled" This reverts commit 002001b092dd662ab79fcedcdd96c037cf0213d6. The original patch introduces cursor gamma issue to multiple Linux compositors. For this reason this commit reverts this change. Cc: Melissa Wen <mwen@igalia.com> Cc: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Reviewed-by: Melissa Wen <mwen@igalia.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-09drm/amd/display: Add some missing debug registersRodrigo Siqueira
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Acked-by: Roman Li <roman.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-09drm/amd/display: Enable cur_rom_en even if cursor degamma is not enabledRodrigo Siqueira
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Acked-by: Roman Li <roman.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-09drm/amd/display: Set alpha enable to 0 for some specific formatsRodrigo Siqueira
Set alpha_en to 0 in some specific color formats. Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Acked-by: Roman Li <roman.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-03-27drm/amd/display: Remove plane and stream pointers from dc scratchAlvin Lee
[Why&How] Remove several plane and stream pointers from dc for code refactoring. Reviewed-by: Wenjing Liu <wenjing.liu@amd.com> Acked-by: Tom Chung <chiahsuan.chung@amd.com> Signed-off-by: Alvin Lee <alvin.lee2@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-03-20drm/amd/display: Refactor DPP into a component directoryRevalla Hari Krishna
[WHY & HOW] Move all dpp files to a new dpp directory. Reviewed-by: Martin Leung <martin.leung@amd.com> Acked-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Revalla Hari Krishna <harikrishna.revalla@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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