drm/amd/powerplay: add display_config_changed for SMU11.

add display_config_changed to support sys interface for SMU11.

Signed-off-by: Chengming Gui <Jack.Gui@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
index 1908b91f22c6..0b13c9319fa9 100644
--- a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
@@ -1376,6 +1376,48 @@ vega20_set_uclk_to_highest_dpm_level(struct smu_context *smu,
         return ret;
 }
 
+static int vega20_display_config_changed(struct smu_context *smu)
+{
+        int ret = 0;
+        struct vega20_dpm_table *dpm_table = smu->smu_dpm.dpm_context;
+
+        if (!smu->funcs)
+                return -EINVAL;
+
+        if (!smu->smu_dpm.dpm_context ||
+            !smu->smu_table.tables ||
+            !smu->smu_table.tables[TABLE_WATERMARKS].cpu_addr)
+                return -EINVAL;
+
+        smu_send_smc_msg_with_param(smu, SMU_MSG_NumOfDisplays, 0);
+        ret = vega20_set_uclk_to_highest_dpm_level(smu,
+                                                   &dpm_table->mem_table);
+        if (ret) {
+                pr_err("Failed to set uclk to highest dpm level");
+                return ret;
+        }
+
+        if ((smu->watermarks_bitmap & WATERMARKS_EXIST) &&
+            !(smu->watermarks_bitmap & WATERMARKS_LOADED)) {
+                ret = smu->funcs->write_watermarks_table(smu);
+                if (ret) {
+                        pr_err("Failed to update WMTABLE!");
+                        return ret;
+                }
+                smu->watermarks_bitmap |= WATERMARKS_LOADED;
+        }
+
+        if ((smu->watermarks_bitmap & WATERMARKS_EXIST) &&
+            smu_feature_is_supported(smu, FEATURE_DPM_DCEFCLK_BIT) &&
+            smu_feature_is_supported(smu, FEATURE_DPM_SOCCLK_BIT)) {
+                smu_send_smc_msg_with_param(smu,
+                                            SMU_MSG_NumOfDisplays,
+                                            smu->display_config->num_display);
+        }
+
+        return ret;
+}
+
 static const struct pptable_funcs vega20_ppt_funcs = {
         .alloc_dpm_context = vega20_allocate_dpm_context,
         .store_powerplay_table = vega20_store_powerplay_table,