From: Nicholas Kazlauskas nicholas.kazlauskas@amd.com
[ Upstream commit 1352c779cb74d427f4150cbe779a2f7886f70cae ]
[Why] An assertion is thrown when using SURFACE_PIXEL_FORMAT_GRPH_RGB565 formats on DCE since the prescale_params->scale wasn't being filled.
Found by a dmesg-fail when running the igt@kms_plane@pixel-format-pipe-a-planes test on Baffin.
[How] Fill in the scale parameter.
Signed-off-by: Nicholas Kazlauskas nicholas.kazlauskas@amd.com Reviewed-by: Roman Li Roman.Li@amd.com Acked-by: Bhawanpreet Lakha Bhawanpreet.Lakha@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c index 7ac50ab1b762..7d7e93c87c28 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -242,6 +242,9 @@ static void build_prescale_params(struct ipp_prescale_params *prescale_params, prescale_params->mode = IPP_PRESCALE_MODE_FIXED_UNSIGNED;
switch (plane_state->format) { + case SURFACE_PIXEL_FORMAT_GRPH_RGB565: + prescale_params->scale = 0x2082; + break; case SURFACE_PIXEL_FORMAT_GRPH_ARGB8888: case SURFACE_PIXEL_FORMAT_GRPH_ABGR8888: prescale_params->scale = 0x2020;