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drm/amdgpu/display: create fake mst encoders ahead of time (v4)

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Prevents a warning in the MST create connector case.

v2: create global fake encoders rather per connector fake encoders
to avoid running out of encoder indices.

v3: use the actual number of crtcs on the asic rather than the max
to conserve encoders.

v4: v3 plus missing hunk I forgot to git add.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1108
Fixes: c6385e503a ("drm/amdgpu: drop legacy drm load and unload callbacks")
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2020-07-10 17:50:00 -04:00
parent 4afaa61db9
commit f74367e492
4 changed files with 48 additions and 28 deletions
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9
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -978,6 +978,9 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
/* Update the actual used number of crtc */
adev->mode_info.num_crtc = adev->dm.display_indexes_num;
/* create fake encoders for MST */
dm_dp_create_fake_mst_encoders(adev);
/* TODO: Add_display_info? */
/* TODO use dynamic cursor width */
@@ -1001,6 +1004,12 @@ error:
static void amdgpu_dm_fini(struct amdgpu_device *adev)
{
int i;
for (i = 0; i < adev->dm.display_indexes_num; i++) {
drm_encoder_cleanup(&adev->dm.mst_encoders[i].base);
}
amdgpu_dm_audio_fini(adev);
amdgpu_dm_destroy_drm_device(&adev->dm);