mirror_ubuntu-kernels/drivers/gpu/drm/amd/display
Nicholas Kazlauskas 2276ee6d1b drm/amd/display: Reset link encoder assignments for GPU reset
[Why]
A warning appears in the log on GPU reset for
link_enc_cfg_link_encs_assign for the following condition:

ASSERT(state->res_ctx.link_enc_cfg_ctx.link_enc_assignments[i].valid == false);

This is not expected behavior and may result in link encoders being
incorrectly assigned.

[How]
The dc->current_state is backed up into dm->cached_dc_state before
we commit 0 streams.

DC will clear link encoder assignments on the real state but the
changes won't propagate over to the copy we made before the
0 streams commit.

DC expects that link encoder assignments are *not* valid
when committing a state, so as a workaround it needs to be cleared
before passing it back into DC.

Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@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>
2021-11-24 15:06:21 -05:00
..
amdgpu_dm drm/amd/display: Reset link encoder assignments for GPU reset 2021-11-24 15:06:21 -05:00
dc drm/amd/display: Add comment where CONFIG_DRM_AMD_DC_DCN macro ends 2021-11-09 17:08:00 -05:00
dmub drm/amd/display: [FW Promotion] Release 0.0.91 2021-11-03 12:32:34 -04:00
include Linux 5.15 2021-11-12 09:23:16 +10:00
modules drm/amd/display: Fix deadlock when falling back to v2 from v3 2021-10-28 14:26:51 -04:00
Kconfig drm/amdgpu/display: fix dependencies for DRM_AMD_DC_SI 2021-10-05 10:55:41 -04:00
Makefile drm/amd/display: Drop CONFIG_DRM_AMD_DC_DMUB guards 2019-11-13 15:29:42 -05:00
TODO