drm/amd/powerplay: add mmhub powergating by smu in powerplay

new generic interface is added in powerplay.

Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2 files changed, 23 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
index c571f8eca2fa..7c4b88aa7abb 100644
--- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
@@ -1475,6 +1475,27 @@ static int pp_get_display_mode_validation_clocks(void *handle,
         return ret;
 }
 
+static int pp_set_mmhub_powergating_by_smu(void *handle)
+{
+        struct pp_hwmgr *hwmgr;
+        struct pp_instance *pp_handle = (struct pp_instance *)handle;
+        int ret = 0;
+
+        ret = pp_check(pp_handle);
+
+        if (ret)
+                return ret;
+
+        hwmgr = pp_handle->hwmgr;
+
+        if (hwmgr->hwmgr_func->set_mmhub_powergating_by_smu == NULL) {
+                pr_info("%s was not implemented.\n", __func__);
+                return 0;
+        }
+
+        return hwmgr->hwmgr_func->set_mmhub_powergating_by_smu(hwmgr);
+}
+
 const struct amd_pm_funcs pp_dpm_funcs = {
         .load_firmware = pp_dpm_load_fw,
         .wait_for_fw_loading_complete = pp_dpm_fw_loading_complete,
@@ -1521,4 +1542,5 @@ const struct amd_pm_funcs pp_dpm_funcs = {
         .set_watermarks_for_clocks_ranges = pp_set_watermarks_for_clocks_ranges,
         .display_clock_voltage_request = pp_display_clock_voltage_request,
         .get_display_mode_validation_clocks = pp_get_display_mode_validation_clocks,
+        .set_mmhub_powergating_by_smu = pp_set_mmhub_powergating_by_smu,
 };
diff --git a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
index cea4ce7233c0..4d96439dd989 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
@@ -347,6 +347,7 @@ struct pp_hwmgr_func {
         int (*odn_edit_dpm_table)(struct pp_hwmgr *hwmgr,
                                         enum PP_OD_DPM_TABLE_COMMAND type,
                                         long *input, uint32_t size);
+        int (*set_mmhub_powergating_by_smu)(struct pp_hwmgr *hwmgr);
 };
 
 struct pp_table_func {