[PATCH 5/7] drm/amd/display: Implement interface for notify cursor support change

[Aurabindo Pillai]

From: Alvin Lee <alvin.lee2 at amd.com>

[Description]
Add new interface for notifying OS of cursor support changes

Reviewed-by: Aric Cyr <aric.cyr at amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai at amd.com>
Signed-off-by: Alvin Lee <alvin.lee2 at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 14 ++++++++++++++
 drivers/gpu/drm/amd/display/dc/dc.h      | 10 ++++++++++
 2 files changed, 24 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 7cac14f493f6..dfd31b169412 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -5337,3 +5337,17 @@ bool dc_abm_save_restore(
 	return false;
 }
 
+void dc_query_current_properties(struct dc *dc, struct dc_current_properties *properties)
+{
+	unsigned int i;
+	bool subvp_in_use = false;
+
+	for (i = 0; i < dc->current_state->stream_count; i++) {
+		if (dc->current_state->streams[i]->mall_stream_config.type != SUBVP_NONE) {
+			subvp_in_use = true;
+			break;
+		}
+	}
+	properties->cursor_size_limit = subvp_in_use ? 64 : dc->caps.max_cursor_size;
+}
+
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index eadb53853131..0b704f1a32a6 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -908,6 +908,14 @@ struct dc_debug_options {
 };
 
 struct gpu_info_soc_bounding_box_v1_0;
+
+/* Generic structure that can be used to query properties of DC. More fields
+ * can be added as required.
+ */
+struct dc_current_properties {
+	unsigned int cursor_size_limit;
+};
+
 struct dc {
 	struct dc_debug_options debug;
 	struct dc_versions versions;
@@ -2276,6 +2284,8 @@ void dc_process_dmub_dpia_hpd_int_enable(const struct dc *dc,
 
 void dc_print_dmub_diagnostic_data(const struct dc *dc);
 
+void dc_query_current_properties(struct dc *dc, struct dc_current_properties *properties);
+
 /* DSC Interfaces */
 #include "dc_dsc.h"
 
-- 
2.41.0