drm/amd/display: Decouple ABM init from dmcu

[Why]
With ABM implemented on DMUB the ABM enablement
shoudn't be solely rely on dmcu. Otherwise it won't work
if dmcu is disabled.

[How]
1. Decouple dmcub config copy from dmcu iram copy.
2. Set abm connector property if either dmcu or dmub enabled.

Signed-off-by: Roman Li <roman.li@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 5023df3..3a50043 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1376,7 +1376,7 @@ static int dm_late_init(void *handle)
        unsigned int linear_lut[16];
        int i;
        struct dmcu *dmcu = NULL;
-       bool ret;
+       bool ret = true;
 
        if (!adev->dm.fw_dmcu)
                return detect_mst_link_for_all_connectors(adev->ddev);
@@ -1397,7 +1397,14 @@ static int dm_late_init(void *handle)
         */
        params.min_abm_backlight = 0x28F;
 
-       ret = dmcu_load_iram(dmcu, params);
+       /* In the case where abm is implemented on dmcub,
+        * dmcu object will be null.
+        * ABM 2.4 and up are implemented on dmcub.
+        */
+       if (dmcu)
+               ret = dmcu_load_iram(dmcu, params);
+       else if (adev->dm.dc->ctx->dmub_srv)
+               ret = dmub_init_abm_config(adev->dm.dc->res_pool->abm, params);
 
        if (!ret)
                return -EINVAL;
@@ -6226,7 +6233,7 @@ void amdgpu_dm_connector_init_helper(struct amdgpu_display_manager *dm,
        aconnector->base.state->max_requested_bpc = aconnector->base.state->max_bpc;
 
        if (connector_type == DRM_MODE_CONNECTOR_eDP &&
-           dc_is_dmcu_initialized(adev->dm.dc)) {
+           (dc_is_dmcu_initialized(adev->dm.dc) || adev->dm.dc->ctx->dmub_srv)) {
                drm_object_attach_property(&aconnector->base.base,
                                adev->mode_info.abm_level_property, 0);
        }