Timur Kristóf d74bcf4969 drm/amd/display: Properly disable scaling on DCE6 ...

[ Upstream commit a7dc87f344 ]

SCL_SCALER_ENABLE can be used to enable/disable the scaler
on DCE6. Program it to 0 when scaling isn't used, 1 when used.
Additionally, clear some other registers when scaling is
disabled and program the SCL_UPDATE register as recommended.

This fixes visible glitches for users whose BIOS sets up a
mode with scaling at boot, which DC was unable to clean up.

Fixes: b70aaf5586 ("drm/amd/display: dce_transform: add DCE6 specific macros,functions")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-10-19 16:33:42 +02:00

..

dce_abm.c

…

dce_abm.h

…

dce_audio.c

…

dce_audio.h

…

dce_aux.c

…

dce_aux.h

…

dce_clk_mgr.c

…

dce_clock_source.c

…

dce_clock_source.h

…

dce_dmcu.c

…

dce_dmcu.h

…

dce_i2c_hw.c

…

dce_i2c_hw.h

…

dce_i2c_sw.c

…

dce_i2c_sw.h

…

dce_i2c.c

…

dce_i2c.h

…

dce_ipp.c

…

dce_ipp.h

…

dce_link_encoder.c

…

dce_link_encoder.h

…

dce_mem_input.c

…

dce_mem_input.h

…

dce_opp.c

…

dce_opp.h

…

dce_panel_cntl.c

…

dce_panel_cntl.h

…

dce_scl_filters_old.c

…

dce_scl_filters.c

…

dce_stream_encoder.c

…

dce_stream_encoder.h

…

dce_transform.c

…

dce_transform.h

…

dmub_abm_lcd.c

…

dmub_abm_lcd.h

…

dmub_abm.c

…

dmub_abm.h

…

dmub_hw_lock_mgr.c

…

dmub_hw_lock_mgr.h

…

dmub_outbox.c

…

dmub_outbox.h

…

dmub_psr.c

…

dmub_psr.h

…

dmub_replay.c

…

dmub_replay.h

…

Makefile

…