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| author |   Tao.Huang <Tao.Huang@amd.com> | 2019-05-06 16:26:54 +0800 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2019-06-11 12:48:56 -0500 |
| commit | 540c122924bd260c5124534d16bd75c0b62f5856 (patch) | |
| tree | db3fc4e8dd809630567d9fa850f467906f26dbcf | |
| parent | drm/amd/display: Set default ABM level to module parameter (diff) | |
| download | linux-dev-540c122924bd260c5124534d16bd75c0b62f5856.tar.xz linux-dev-540c122924bd260c5124534d16bd75c0b62f5856.zip | |
drm/amd/display: fix resource saving missing when power state switch
Signed-off-by: Tao.Huang <Tao.Huang@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index d89a29bd8785..0bff546d3727 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1930,6 +1930,12 @@ void dc_set_power_state( enum dc_acpi_cm_power_state power_state) { struct kref refcount; + struct display_mode_lib *dml = kzalloc(sizeof(struct display_mode_lib), + GFP_KERNEL); + + ASSERT(dml); + if (!dml) + return; switch (power_state) { case DC_ACPI_CM_POWER_STATE_D0: @@ -1946,15 +1952,20 @@ void dc_set_power_state( /* Preserve refcount */ refcount = dc->current_state->refcount; + /* Preserve display mode lib */ + memcpy(dml, &dc->current_state->bw_ctx.dml, sizeof(struct display_mode_lib)); + dc_resource_state_destruct(dc->current_state); memset(dc->current_state, 0, sizeof(*dc->current_state)); dc->current_state->refcount = refcount; + dc->current_state->bw_ctx.dml = *dml; break; } + kfree(dml); } void dc_resume(struct dc *dc) |