drm/amd/display: Add support for FreeSync on eDP to module

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

1 files changed, 33 insertions, 9 deletions

diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
index 009cb797bcfa..82086a129a3b 100644
--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
@@ -109,11 +109,16 @@ struct freesync_entity {
         struct mod_freesync_user_enable user_enable;
 };
 
+struct freesync_registry_options {
+        unsigned int min_refresh_from_edid;
+};
+
 struct core_freesync {
         struct mod_freesync public;
         struct dc *dc;
         struct freesync_entity *map;
         int num_entities;
+        struct freesync_registry_options opts;
 };
 
 #define MOD_FREESYNC_TO_CORE(mod_freesync)\
@@ -136,7 +141,7 @@ struct mod_freesync *mod_freesync_create(struct dc *dc)
 
         struct persistent_data_flag flag;
 
-        int i = 0;
+        int i, data = 0;
 
         if (core_freesync == NULL)
                 goto fail_alloc_context;
@@ -165,6 +170,12 @@ struct mod_freesync *mod_freesync_create(struct dc *dc)
         flag.save_per_link = false;
         dm_write_persistent_data(core_dc->ctx, NULL, FREESYNC_REGISTRY_NAME, NULL, NULL,
                                         0, &flag);
+        flag.save_per_edid = false;
+        flag.save_per_link = false;
+        if (dm_read_persistent_data(core_dc->ctx, NULL, NULL,
+                        "DalDrrSupport", &data, sizeof(data), &flag)) {
+                core_freesync->opts.min_refresh_from_edid = data;
+        }
 
         return &core_freesync->public;
 
@@ -219,7 +230,7 @@ bool mod_freesync_add_stream(struct mod_freesync *mod_freesync,
         struct core_stream *core_stream = NULL;
         struct core_dc *core_dc = NULL;
         struct core_freesync *core_freesync = NULL;
-        int persistent_freesync_enable = 0;
+        int persistent_freesync_enable, stream_index = 0;
         struct persistent_data_flag flag;
         unsigned int nom_refresh_rate_micro_hz;
         unsigned long long temp;
@@ -238,6 +249,26 @@ bool mod_freesync_add_stream(struct mod_freesync *mod_freesync,
 
                 dc_stream_retain(stream);
 
+                stream_index = map_index_from_stream(core_freesync, stream);
+
+                temp = stream->timing.pix_clk_khz;
+                temp *= 1000ULL * 1000ULL * 1000ULL;
+                temp = div_u64(temp, stream->timing.h_total);
+                temp = div_u64(temp, stream->timing.v_total);
+
+                nom_refresh_rate_micro_hz = (unsigned int) temp;
+
+                if (core_freesync->opts.min_refresh_from_edid != 0 &&
+                                dc_is_embedded_signal(
+                                        stream[stream_index].sink->sink_signal)) {
+                        caps->supported = true;
+                        caps->min_refresh_in_micro_hz =
+                                core_freesync->opts.min_refresh_from_edid *
+                                        1000000;
+                        caps->max_refresh_in_micro_hz =
+                                        nom_refresh_rate_micro_hz;
+                }
+
                 core_freesync->map[core_freesync->num_entities].stream = stream;
                 core_freesync->map[core_freesync->num_entities].caps = caps;
 
@@ -275,13 +306,6 @@ bool mod_freesync_add_stream(struct mod_freesync *mod_freesync,
                                         enable_for_video = false;
                 }
 
-                temp = stream->timing.pix_clk_khz;
-                temp *= 1000ULL * 1000ULL * 1000ULL;
-                temp = div_u64(temp, stream->timing.h_total);
-                temp = div_u64(temp, stream->timing.v_total);
-
-                nom_refresh_rate_micro_hz = (unsigned int) temp;
-
                 if (caps->supported &&
                     nom_refresh_rate_micro_hz >= caps->min_refresh_in_micro_hz &&
                     nom_refresh_rate_micro_hz <= caps->max_refresh_in_micro_hz)