From 4fc6f65965481bd2cdb8827a6fd991ed076b1006 Mon Sep 17 00:00:00 2001 From: "Jerry (Fangzhi) Zuo" Date: Fri, 3 Nov 2017 14:19:06 -0400 Subject: drm/amd/display: Miss register MST encoder cbs It is to fix: MST display failed to resume from S3 Need to properly setup MST encoder cbs. Otherwise drm_device encoder doesn't register its own cbs, leading to NULL encoder->funcs in drm_atomic_helper_resume(). Signed-off-by: Jerry (Fangzhi) Zuo Reviewed-by: Roman Li Acked-by: Harry Wentland Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 3b05da7a90e8..f8efb98b1fa7 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -245,6 +245,16 @@ static const struct drm_connector_helper_funcs dm_dp_mst_connector_helper_funcs .best_encoder = dm_mst_best_encoder, }; +static void amdgpu_dm_encoder_destroy(struct drm_encoder *encoder) +{ + drm_encoder_cleanup(encoder); + kfree(encoder); +} + +static const struct drm_encoder_funcs amdgpu_dm_encoder_funcs = { + .destroy = amdgpu_dm_encoder_destroy, +}; + static struct amdgpu_encoder * dm_dp_create_fake_mst_encoder(struct amdgpu_dm_connector *connector) { @@ -268,7 +278,7 @@ dm_dp_create_fake_mst_encoder(struct amdgpu_dm_connector *connector) drm_encoder_init( dev, &amdgpu_encoder->base, - NULL, + &amdgpu_dm_encoder_funcs, DRM_MODE_ENCODER_DPMST, NULL); -- cgit v1.2.3