| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 016/106] drm/amd/display: reprogram VM config when system resume | Date | Sun, 6 Oct 2019 19:20:22 +0200 |
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From: Lewis Huang <Lewis.Huang@amd.com>
[ Upstream commit e5382701c3520b3ed66169a6e4aa6ce5df8c56e0 ]
[Why] The vm config will be clear to 0 when system enter S4. It will cause hubbub didn't know how to fetch data when system resume. The flip always pending because earliest_inuse_address and request_address are different.
[How] Reprogram VM config when system resume
Signed-off-by: Lewis Huang <Lewis.Huang@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Eric Yang <eric.yang2@amd.com> Acked-by: Leo Li <sunpeng.li@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/core/dc.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index f4b89d1ea6f6f..2b2efe443c36d 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1585,6 +1585,14 @@ void dc_set_power_state( dc_resource_state_construct(dc, dc->current_state); dc->hwss.init_hw(dc); + +#ifdef CONFIG_DRM_AMD_DC_DCN2_0 + if (dc->hwss.init_sys_ctx != NULL && + dc->vm_pa_config.valid) { + dc->hwss.init_sys_ctx(dc->hwseq, dc, &dc->vm_pa_config); + } +#endif + break; default: -- 2.20.1
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