drm/amd/display: Re-enable Vsync Interrupts for Gradual Refresh Ramp

- Make sure Vsync interrupts are disabled in static screen case
  and enabled when not to save power
- Create no_static_for_external_dp debug option

Signed-off-by: Amy Zhang <Amy.Zhang@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

3 files changed, 34 insertions, 10 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 3e2ed3d15379..93aff8269778 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -188,6 +188,7 @@ struct dc_debug {
         bool disable_dmcu;
         bool disable_psr;
         bool force_abm_enable;
+        bool no_static_for_external_dp;
 };
 
 struct dc {
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
index c7da90f2d8e7..4df79f7147f8 100644
--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
@@ -440,14 +440,11 @@ static void calc_freesync_range(struct core_freesync *core_freesync,
         }
 
         /* Determine whether BTR can be supported */
-        //if (max_frame_duration_in_ns >=
-        //              2 * min_frame_duration_in_ns)
-        //      core_freesync->map[index].caps->btr_supported = true;
-        //else
-        //      core_freesync->map[index].caps->btr_supported = false;
-
-        /* Temp, keep btr disabled */
-        core_freesync->map[index].caps->btr_supported = false;
+        if (max_frame_duration_in_ns >=
+                        2 * min_frame_duration_in_ns)
+                core_freesync->map[index].caps->btr_supported = true;
+        else
+                core_freesync->map[index].caps->btr_supported = false;
 
         /* Cache the time variables */
         state->time.max_render_time_in_us =
@@ -882,8 +879,10 @@ void mod_freesync_update_state(struct mod_freesync *mod_freesync,
                          * panels. Also change core variables only if there
                          * is a change.
                          */
-                        if (dc_is_embedded_signal(
-                                streams[stream_index]->sink->sink_signal) &&
+                        if ((dc_is_embedded_signal(
+                                streams[stream_index]->sink->sink_signal) ||
+                                core_freesync->map[map_index].caps->
+                                no_static_for_external_dp == false) &&
                                 state->static_screen !=
                                 freesync_params->enable) {
 
@@ -1035,6 +1034,25 @@ bool mod_freesync_get_user_enable(struct mod_freesync *mod_freesync,
         return true;
 }
 
+bool mod_freesync_get_static_ramp_active(struct mod_freesync *mod_freesync,
+                const struct dc_stream *stream,
+                bool *is_ramp_active)
+{
+        unsigned int index = 0;
+        struct core_freesync *core_freesync = NULL;
+
+        if (mod_freesync == NULL)
+                return false;
+
+        core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+        index = map_index_from_stream(core_freesync, stream);
+
+        *is_ramp_active =
+                core_freesync->map[index].state.static_ramp.ramp_is_active;
+
+        return true;
+}
+
 bool mod_freesync_override_min_max(struct mod_freesync *mod_freesync,
                 const struct dc_stream *streams,
                 unsigned int min_refresh,
diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h b/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h
index f7f5a2cd7914..eae1b348b0dd 100644
--- a/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h
+++ b/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h
@@ -88,6 +88,7 @@ struct mod_freesync_caps {
         unsigned int max_refresh_in_micro_hz;
 
         bool btr_supported;
+        bool no_static_for_external_dp;
 };
 
 struct mod_freesync_params {
@@ -129,6 +130,10 @@ bool mod_freesync_get_user_enable(struct mod_freesync *mod_freesync,
                 const struct dc_stream *stream,
                 struct mod_freesync_user_enable *user_enable);
 
+bool mod_freesync_get_static_ramp_active(struct mod_freesync *mod_freesync,
+                const struct dc_stream *stream,
+                bool *is_ramp_active);
+
 bool mod_freesync_override_min_max(struct mod_freesync *mod_freesync,
                 const struct dc_stream *streams,
                 unsigned int min_refresh,