drm/amd/display: Add function to fetch clock requirements

Also add dram clock to clocks struct, for systems that uses them.
Signed-off-by: Eryk Brol <eryk.brol@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -1836,3 +1836,16 @@ void dc_link_remove_remote_sink(struct dc_link *link, struct dc_sink *sink)
 		}
 	}
 }
+
+void get_clock_requirements_for_state(struct dc_state *state, struct AsicStateEx *info)
+{
+	info->displayClock				= (unsigned int)state->bw.dcn.clk.dispclk_khz;
+	info->engineClock				= (unsigned int)state->bw.dcn.clk.dcfclk_khz;
+	info->memoryClock				= (unsigned int)state->bw.dcn.clk.dramclk_khz;
+	info->maxSupportedDppClock		= (unsigned int)state->bw.dcn.clk.max_supported_dppclk_khz;
+	info->dppClock					= (unsigned int)state->bw.dcn.clk.dppclk_khz;
+	info->socClock					= (unsigned int)state->bw.dcn.clk.socclk_khz;
+	info->dcfClockDeepSleep			= (unsigned int)state->bw.dcn.clk.dcfclk_deep_sleep_khz;
+	info->fClock					= (unsigned int)state->bw.dcn.clk.fclk_khz;
+	info->phyClock					= (unsigned int)state->bw.dcn.clk.phyclk_khz;
+}
\ No newline at end of file

drivers/gpu/drm/amd/display/dc/dc.h

@@ -44,7 +44,6 @@
 #define MAX_STREAMS 6
 #define MAX_SINKS_PER_LINK 4
 
-
 /*******************************************************************************
  * Display Core Interfaces
  ******************************************************************************/
@@ -208,6 +207,7 @@ struct dc_clocks {
 	int dcfclk_deep_sleep_khz;
 	int fclk_khz;
 	int phyclk_khz;
+	int dramclk_khz;
 };
 
 struct dc_debug_options {
@@ -601,6 +601,8 @@ struct dc_validation_set {
 
 enum dc_status dc_validate_plane(struct dc *dc, const struct dc_plane_state *plane_state);
 
+void get_clock_requirements_for_state(struct dc_state *state, struct AsicStateEx *info);
+
 enum dc_status dc_validate_global_state(
 		struct dc *dc,
 		struct dc_state *new_ctx);

drivers/gpu/drm/amd/display/dc/dc_types.h

@@ -659,4 +659,16 @@ enum i2c_mot_mode {
 	I2C_MOT_FALSE
 };
 
+struct AsicStateEx {
+	unsigned int memoryClock;
+	unsigned int displayClock;
+	unsigned int engineClock;
+	unsigned int maxSupportedDppClock;
+	unsigned int dppClock;
+	unsigned int socClock;
+	unsigned int dcfClockDeepSleep;
+	unsigned int fClock;
+	unsigned int phyClock;
+};
+
 #endif /* DC_TYPES_H_ */